EP0801158B1 - Sensor for the working distance of card clothings - Google Patents

Sensor for the working distance of card clothings Download PDF

Info

Publication number
EP0801158B1
EP0801158B1 EP97810179A EP97810179A EP0801158B1 EP 0801158 B1 EP0801158 B1 EP 0801158B1 EP 97810179 A EP97810179 A EP 97810179A EP 97810179 A EP97810179 A EP 97810179A EP 0801158 B1 EP0801158 B1 EP 0801158B1
Authority
EP
European Patent Office
Prior art keywords
clothing
distance
working
machine according
carding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97810179A
Other languages
German (de)
French (fr)
Other versions
EP0801158A1 (en
Inventor
Jürg Faas
Christian Sauter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to EP01118063A priority Critical patent/EP1158078B1/en
Publication of EP0801158A1 publication Critical patent/EP0801158A1/en
Priority to US09/156,756 priority patent/US6044910A/en
Application granted granted Critical
Publication of EP0801158B1 publication Critical patent/EP0801158B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02Carding machines
    • D01G15/12Details
    • D01G15/28Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20Mixing gases with liquids
    • B01F23/23Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B01F23/2321Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current
    • B01F23/23211Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by moving liquid and gas in counter current the liquid flowing in a thin film to absorb the gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20Mixing gases with liquids
    • B01F23/23Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23762Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30Injector mixers
    • B01F25/31Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40Static mixers
    • B01F25/42Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4317Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
    • B01F25/43172Profiles, pillars, chevrons, i.e. long elements having a polygonal cross-section

Definitions

  • the invention relates to a sensor, with which the working distance of card clothing (also called “carding gap”) can be measured, i.e. the effective Distance of the tips of a set from a machine element opposite the set.
  • the latter element can also have a set, but could instead by a formwork segment having a guide surface be formed.
  • the invention is particularly for measuring the working distance designed between the drum and the covers of a revolving cover assembly, but is not limited to this.
  • the invention also relates to a regulation for influencing the on-line "Carding gap", i.e. without interrupting the work of the card.
  • the invention is particularly but not exclusively, designed for use in the revolving flat card.
  • the carding gap is decisive for the carding quality.
  • the carding gap is the distance between a clothing and one opposite the clothing Element.
  • the size (width) of the carding gap is an important one Machine parameters, which both the technology (the fiber processing) as the running behavior of the machine also has an impact.
  • the carding gap is set as narrow as possible (it is measured in tenths of a millimeter) without the risk of a "collision" of the To include work items. To ensure even processing of the fibers, the gap across the entire working width of the machine must be equal.
  • the working width of the conventional revolving flat card is approx Meters, with wider cards being proposed.
  • the carding gap is fundamentally influenced by two factors, namely the machine settings on the one hand and the condition of the set on the other.
  • the most important carding gap of the revolving card is in the main carding zone, i.e. between the drum and the revolving cover assembly. This gap will set for decades using a so-called flexible bow.
  • the adjustment work but requires specially trained maintenance personnel and the machine can be used during of resetting does not continue.
  • the readjustment therefore usually takes place only when re-garnishing the machine or at a clothing service, i.e. after working intervals from a few months to two years. It is known that the carding work by the "on-line" setting of the machine elements could be "optimized" as the inevitable state changes in the sets at least in part by adjusting the machine settings accordingly be balanced.
  • the DE-C-29 48 825 represents the closest prior art.
  • the Scripture proposes (column 7, lines 15 to 22) the distance between two cylindrical surfaces (labeled "a") to measure directly in the card. From the description of this distance "a” (Column 4, lines 55 to 57) but it is not possible to determine exactly whether it is the working distance acts in the aforementioned sense or not. In any case, they are all missing Information on how to achieve the desired result.
  • a measuring sensor should be provided in the garnished area.
  • the sensor generates a measuring field that extends in the direction of one set, the "height" of the sensor compared to the other set is predetermined. It's unclear how that System should react to changes in the second set (e.g. wear) (see Fig. 2 and Fig. 4C of DE-A-42 35 610).
  • a “set” consists of a large number of individual projections (“tips”) that protrude from a support surface into the working area of the card (see manual der textile manufacture, Volume 2: Cleaning and Carding - The Textile Institute, Author: W. Small). These peaks have the highest possible “density”, yet do not form any continuous area that can be scanned as such
  • the working distances between the sets of a modern card are very high small (you measure it in tenths of a millimeter) and you strive to reduce it further.
  • the working width of the card i.e. the width of the garnished areas, where fibers where possible should be processed evenly
  • the Working distance should be the same across the entire working width.
  • At least one set that is adjacent to the working distance is in motion, mostly both.
  • the space in the card is scarce.
  • This invention is based on findings on the subject of "sensors” that it is only then it is possible to deduce the effective working distance if this distance "from the side "(the working width) is scanned. This is because of the changeability of the distance to be measured - you have to observe it in a direction that is transverse stands for "direction of change”.
  • a touch probe that extends from side to side across the entire working width is desirable is effective, although of course you have to work without contact.
  • Such a requirement can only be fulfilled with one beam, e.g. with a beam of light, in particular with a laser beam.
  • the beam could thus be directed through the work area that it is partly due to the elements adjacent to the working distance is scattered (or "held"), the degree of dispersion or that remaining light is used as a measure of the distance to be measured.
  • a relatively robust device will not be able to "penetrate" the work area, i.e. it can only sample the conditions in the side zones of the work area. If these conditions are representative of the entire work area, can thereby solving the whole task.
  • the results from a page zone can if necessary, be supplemented by results obtained by other means e.g. by a method according to DE-A-42 35 610. Finally, it can also prove useful to solve only one subtask.
  • a relatively robust device that is only suitable for observing a side zone can e.g. include a camera that works with an evaluation, which enables image analysis.
  • a possible problem is that, as already mentioned, a set (also from the side) no continuous (closed) surface forms what could make image analysis considerably more difficult. This could cause this problem be defused that the "aperture" of the camera (whether mechanical or electronic) so slow compared to the speed of movement of the gamitur elements is chosen so that the elements in the resulting image are (sufficient) form a closed surface.
  • the same effect could be achieved that sequentially snapped images are placed on top of each other to analyze the Composite image to create what with an electronic evaluation without further ado is possible.
  • the digitization of the image signals and their storage is important for this -
  • the appropriate facilities should preferably be provided in the evaluation.
  • EP-C-384 297 and DE-A-42 35 610 deal mainly with the problem of Measuring sizes that are important for the assessment of a carding gap are.
  • a regulation for the carding gap is mentioned in both documents, but none concrete proposals for implementation can be found in it.
  • DE-A-41 15 960 sees a system according to which the continuous adjustment based on a (quality) monitoring of the product of the card.
  • EP-A-627 508 also deals with the problem of the measuring system, but shows also in FIGS. 12 and 13 proposals for the actuators that are used to reset Machine elements could be used.
  • the sensor system can work according to the known principles, e.g. according to DE-C-29 48 825, or EP-C-384 297, or DE-A-42 35 610, or DE-A-41 15 968.
  • the preferred sensor technology but works on the principles of the aforementioned sensor technology, according to which the carding distance is scanned contactless from the side of the work area.
  • the actuators can also work according to existing principles, e.g. to DE-C-29 48 825, or EP-A-627 508, or (in the preferred embodiment) according to the EP Application No. 96 101 466 dated February 2, 1996.
  • the set mentioned can be wound on the reel and the one to be regulated or the carding gap to be controlled can be found in the main carding zone (between the drum set and the cover sets).
  • a known known revolving card e.g. the applicant's C50 card, shown schematically.
  • the fiber material is in the form of dissolved and cleaned flakes fed into the chute 2 by a breeze 3 (also licker-in called) as a wadding, a drum (or drum) 4 handed over and by the cooperation of the drum with a traveling cover set 5 dissolved and cleaned.
  • the cover of the revolving cover set 5 are replaced by a suitable drive system of the revolving cover assembly via deflection rollers 6 one closed path (in the same direction or opposite to the direction of rotation of the drum) guided.
  • Fibers from the fleece located on the reel 4 are separated from one Customer 7 removed and in an existing of different rollers Outlet section 8 formed into a sliver 9.
  • This card sliver 9 is one Tape storage 10 placed in a transport can 11 in cycloidal turns.
  • the angular range of the drum circumference, which the revolving cover aggregate directly faces, can be called the "main carding zone", in which the done most of the carding.
  • the angular range between the licker-in 3 and the revolving flap unit can be used as a "pre-carding zone” and the angular range between the revolving flat aggregate and the customer 7 referred to as “post-carding zone” become.
  • the angular range between the customer 7 and the licker-in 3 are referred to as the "sub-carding zone”.
  • the invention is concerned especially with measuring the carding distance in the main carding zone and other figures show this zone only. However, the invention is not based on limited this application, it can also be used to measure the distance of the Drum kit used by other, opposing elements, such as finally briefly explained.
  • the revolving cover set 5 comprises flat rods, which are not shown individually in FIG. 1, but in Fig. 2 are indicated with the reference numeral 13.
  • Each flat bar is with one Garnish strips 14 provided in the embodiment according to FIG. 2 as "semi-rigid" or flexible set is formed (see the above-mentioned manual, volume 2, page 52).
  • the drum 4 also carries a set 15, which is an all-steel set with teeth 16 is executed.
  • the (opposite) directions of movement are indicated by the arrows, the flat bars 13 also in the opposite direction could move (in the same direction).
  • the area AB between the cylindrical surface 17 of the drum 4 and the outer surface 18 formed by the flat bars 13 referred to herein as the "workspace".
  • a flat bar 13 is in his "Working position" when its set 14 extends into the work area AB.
  • the radial depth of the working area AB can be determined when designing the machine certain operating influences must be taken into account.
  • Such Influences are, for example, the operating speed of the drum, which affects the expansion of the Drums influenced by the effect of centrifugal force, and the heat generation or the cooling (if any), which reflects the changes in the working elements affect the effects of operating temperatures.
  • the depth of the work area But AB is in itself of less importance for the quality of the carding work as the "carding distance" (or the "carding gap") KA between the tips of the Sets 14, 15.
  • the carding distance KA is determined by the depth of the working area AB influenced, since the sets start from the surfaces 17, 18, but it is also from the Wear influenced, which arises at the tips themselves, while the card in Operation stands. This wear arises in part directly from processing of fibers, but also partly by grinding, which are carried out periodically must to ensure the predetermined quality of the carding work over the long term.
  • FIG. 3 again shows the cylindrical surface 17 of the drum 4 and the outer surface 18 of the working positions of the flat bars 13 over the entire working width KB the card.
  • the working width KB of a conventional card for processing today of cotton or fibers with a corresponding pile length is approx. 1 meter.
  • the wires 20 and teeth 16 of the sets 14, 15 are also partially in FIG. 3 is shown in order to be able to show the carding distance KA again schematically, it should be noted that the proportions of the sizes in the figure are distorted had to be in order to enable the display at all.
  • the carding distance in The main carding zone of a revolving flat card is approximately 0.2 to 0.25 mm today.
  • Figure 3 has been assumed that the tip height of both sets and the Depth of the working area AB are constant over the entire working width KB. This In practice, assumption is not necessarily correct.
  • the card according to FIG. 4 additionally comprises a laser 22 .mu.m on one side S1 generate a laser beam 24 that passes from side to side of the card through the work area AB is directed.
  • the laser 22 is located on the other side S2 a receiver 26, which depends on an output signal to an evaluation 28 of the intensity of the receiving light beam 24.
  • the evaluation 28 can are designed according to different principles, as follows for both versions is explained together.
  • Figures 5 and 6 show the laser beam 24 "in cross section", each with individual Teeth 16 of the drum set and individual wires 20 of the flat bar sets. It It is assumed in these figures that the beam 24 is round in cross section, but what is not essential to the invention. It is also assumed that the beam 24 in the Room (opposite the card frame, not shown) remains stationary. Figures 5 and 6 differ with regard to the carding distance - the distance KAI is in FIG. 5 significantly smaller than the distance KAII in FIG. 6, because in the latter case the teeth 16, 20 have "regressed" to beam 24 due to wear.
  • FIG. 5 shows a significant proportion of the beam cross section through those shown Teeth 16, 20 "blocked” so that a corresponding portion of the beam 24 passes through the side surfaces of the clothing tips are scattered ("held") and not until Receiver 26 can penetrate. If you consider that neither the top 16 of the Reel set 15 still the tips 20 of the cover sets 14 in rows, but rather staggered, distributed over the working width, it becomes clear that the laser beam 24 can practically only penetrate through the distance KA and that above the envelope G and below the envelope T the beam is largely extinguished. In the figure 6 a significantly smaller part of the beam cross-section is scattered through the sets, so that the radiation intensity perceived by the receiver 26 is much higher.
  • test results would of course be due to movements of the beam compared to that Frame (the sets) or the receiver can be falsified in relation to the beam. Such movements could e.g. due to shocks or vibrations caused. Such disturbances are usually short-lived be, while a change in the carding distance is relatively slow.
  • the evaluation can be designed accordingly, steep signal changes can e.g. be filtered out. This can also affect the response of the system Tufts of fibers, particles such as shell parts and individual pieces that break through the envelope Peaks to be avoided.
  • the laser 22 can be from a driver stage (not shown) can be excited with the beam 24 continuously or periodically can be generated. In the latter case, the laser 22 and the receiver 26 a common controller (not shown) can be provided so that they can be synchronized with each other.
  • FIG. 7 shows a second embodiment, the general arrangement of those also here corresponds to Figure 4 and the same reference numerals have been used.
  • a camera 30 on one side of the card in the height of the working area AB provided.
  • a light source 32 can be provided, although this is not absolutely necessary, because the camera can only effectively show the edge of the working width. If in If there is not enough light in this edge area, it can be on the same side of the Carded light source (a flash lamp, not shown) may be provided.
  • the camera 30 snaps a snapshot of the border area opposite her, the thereby image obtained is obtained by suitable, known means 34 (only schematically digitized and the resulting signal (a sequence of "bits") is stored in a buffer memory 36.
  • the signal can be evaluated 28 predetermined patterns checked by means of image analysis, which are conventional today become. The patterns are explained in more detail below with reference to FIGS. 8 and 9.
  • a camera can be provided on both sides of the card.
  • Figure 8 shows schematically the teeth 16 'of a part from the outer wire winding the drum 4 (not shown in Fig. 8).
  • This process can be done as often as necessary to be repeated in order to build up the required "continuity" of the envelope curve T '. But if the evaluation can take on additional tasks, it isn't even necessary to build up the envelope T ', it can rather be based on the evaluation the determination of the position of the tooth tips in the analyzed image be "constructed".
  • the envelopes T and T ' differ in any case in that the curve T' only is formed by the edge teeth 16 ', while many tips of the set 15 to Envelope T contribute. If, however, the marginal teeth 16 'for the employment relationships are representative of the entire width AB, the envelopes T and T 'can be effective are considered identical.
  • FIG. 9 shows schematically the "image section" (or the “viewfinder") 40 of the camera 30 represents, as well as the edge teeth 16 'and edge wires 20', which when opening the panel are in the field of view of the camera 30.
  • the "aperture” can be a mechanical device comprise, but can alternatively be formed by an electronic device, that changes the state of the camera 30 to allow a snapshot.
  • the frame 40 is shown as square, but this is of no importance for the invention is.
  • the wires 20' form an envelope curve G 'and the like Carding distance KA is given by the distance between the envelopes T ', G', which by the Image analysis can be determined.
  • Figures 10 and 11 each show the envelopes G (G ') and T (T), which according to one or the other of the methods described and created in an "image” are (whereby this picture consists at most of "bits”).
  • the two figures show two ways to “analyze” or evaluate the images.
  • 10 is one fictitious card theory "provided, the evaluation of so many" sheets "B predetermined “Insert” the thickness between the envelopes until the distance is filled.
  • the Number of sheets B recorded indicates the distance KA.
  • 11 sets out the evaluation a "scale” S on the image, from which the distance KA can be read.
  • FIG. 12 now shows three options for evaluating the results of the evaluation 28.
  • the determined distance is shown in a display 43, e.g. as a number or even as a (possibly scaled) figure, which is from the User must be designed.
  • This variant is e.g. when setting the card of great benefit during the assembly, since it gives objective values that from the Fitter (or his leaf gauge) are independent.
  • the determined distance is compared with a comparator 45 (for example via a keyboard 47) predetermined limit value, so that a display or an alarm can be generated when a tolerance is reached, or is exceeded.
  • the limit value can be set by the end user (e.g. by the spinning master) entered and the resulting "on-line" monitoring is useful when determining the time for maintenance (e.g. grinding or Re-garnish), but also to indicate malfunctions, examined by the staff should be.
  • the determined distance is fed to a control 49, where it is compared with a predetermined target value, so that in the event of a deviation A from Target value an actuator 50 can be actuated to the position of the flat bars opposite redetermine the drum and thereby compensate for the deviation.
  • a control 49 where it is compared with a predetermined target value, so that in the event of a deviation A from Target value an actuator 50 can be actuated to the position of the flat bars opposite redetermine the drum and thereby compensate for the deviation.
  • the regulation is not based on the application of the electronic teaching according to FIGS. 4 and also not limited to the use of a measuring device at a single measuring point, although for the sake of simplicity, the representations are only one such measuring point demonstrate.
  • Several such measuring points can also be used, each with its own measuring device are distributed along the flexible sheet 44, 46, e.g. according to the today conventional adjustment positions where the fitter uses the leaf gauge.
  • Each measuring device can then be assigned its own controlled actuator system that an individual carding distance is specified for each such measuring point and can be followed automatically afterwards.
  • the measuring device can be moved Bracket can be carried from one setting position to the next, a flexible arch can be moved along to the carding distance at each such position scan.
  • a measuring device with a camera is well suited for this. Basically the device could even move along the work area while moving Scan the carding distance without interruption (video camera) to create a "continuous" Image of the carding distance from one end of the work area to the other map or over a "route" of the work area, which may be predetermined or could even be selected.
  • the latter variant is used in conventional cards because of the structure of the frame may not be possible, but can be taken into account for new designs.
  • the Mapping of the entire work area is desirable because it provides information about the "overall condition" of the work area can win.
  • a controller must be provided to operate the device at the predetermined Trigger positions.
  • the measuring device could e.g. from a swivel arm be carried, which can pivot about an axis that with the drum axis flees.
  • the measuring device could also be carried by a sled, which runs along the flexible arch on a rail. It should probably be on A measuring device can be provided on both sides of the card.
  • the invention is not restricted to use in the main carding zone.
  • a similar arrangement can be used to control the distance of the customer 7 or the licker-in 3 to monitor the drum 4 or to regulate. It is even easier to use the measurement, monitoring and and rule principles related to compliance with the prescribed Distances of the drum set from stationary elements, such as fixed carding elements in the pre- or post-carding zone, or fixed leading segments in the sub-carding zone or fixed lid of a fixed lid card.
  • envelope in this description includes the approximation in form a straight "envelope line", e.g. a tangent to the envelope.
  • FIG. 1 A modern card is equipped with a microprocessor or microcomputer control equipped - examples can be found in EP-A-701 012 and DE-A-31 20 133.
  • This Control is indicated in FIG. 1 by reference number 12.
  • Fig.1 special connections between the controller 12 and other elements of the machine indicated, but examples of such compounds are from the aforementioned prior publications and further connections will be made in the course of following description explained.
  • Input device e.g. a keyboard
  • Input device 21 to provide data in the memory (not indicated) to be able to enter the computer 12.
  • the selected programming is usually given certain key data by the user required to be able to control the machine, and this key data is mostly one or the other combination of belt weight (ktex), delivery speed (m / min) and production (kg / h).
  • the control is based on such key data 12 able to generate control signals for the various elements achieve the results specified by the user over the operating period and monitor the results achieved.
  • the machine is equipped with sensors (in Fig. 1 not shown) equipped, which deliver signals to the control. That fact is in the invention according to EP 96 101 466 have been used, as the following description with reference to Figures 14 to 16.
  • a flexible sheet 30 of such a card is now shown in a detail, with revolving covers 13 running around it (only two shown) that of one Timing belts are moved slowly.
  • control elements 32 provided with which the carding distance can be adjusted.
  • the control elements 32 are automatic by means of actuators, for example, small servomotors 34 adjustable.
  • This actuator system is connected to the controller 12, which is the setting of the flexible sheet 30, and thus the carding distance determined; for example after an adjustment characteristic according to FIG. 15.
  • FIG. 15 shows a diagram which shows the change in the carding distance KA on the abscissa depending on the accumulated card sliver production P in tons (kg) on the ordinate for various processed material types.
  • the curve S specifies the target distance, i.e. the carding distance, which does not wear the Set of the drum (and the traveling cover) would be given.
  • the target distance i.e. the carding distance, which does not wear the Set of the drum (and the traveling cover)
  • the degree of wear depending on the current production for the different provenances of the fiber material (A or B) is either known or empirically detectable so that this data is entered into the controller 12 (FIG. 1) can be, and the adjusting elements 32 are adjusted based on this information can.
  • the total production of a card from a given point in time is through the programmable control determined by the machine and displayed on request, that is, such data normally already present in the machine control.
  • the "zero point" for the Calculation of this total production is of course also a zero point for the control the adjustment of the carding distance can be used.
  • a prerequisite is that the elements to be adjusted at the zero point in a given state are what must be guaranteed by the operating personnel. Otherwise it becomes necessary to monitor the "starting position" of the elements with suitable sensors and to report to the controller.
  • the controller 12 can be programmed by the machine supplier with the adjustment characteristic the characteristic is entered in the controller's memory. The user can then select the appropriate characteristic by entering the Call up processing material.
  • the adjustment is preferably not continuous, but intermittent (step by step) depending on the capabilities of the actuators.
  • the actuator system is preferably in able to reliably perform an adjustment that is only a fraction (e.g. maximum 10%) of the normal carding distance. Such distances are in today Range 20 to 30 hundredths of a millimeter.
  • the actuator system can preferably be reliable Carry out adjustment steps in the range 1 to 3 hundredths.
  • the system is best suited for the user who is on a long period processed a given type of material.
  • the calculation of "total production" at frequent material changes will prove difficult.
  • time can be used as a control parameter instead of production be used.
  • the benefit here means the effective production time in a given period of time.
  • a double of the arrangement according to FIG. 14 must be a mirror image on the other side of the Card is provided in order to be able to set the appropriate flexible sheet.
  • the carding distance can be during of ongoing production in a particularly simple and economical way readjust; this avoids unnecessary downtimes.
  • the hiring or adjustment of the carding distance can also depend on the grinding a set, especially of the automatic grinding of the drum set, be made. This means that the operating times of the carding machines are in one Spinning increased significantly without accepting significant losses in quality have to.
  • a suitable embodiment is described below with reference to FIG. 16.
  • control according to FIG. 13 is able to reliably determine the carding distance KA to keep at a predetermined set point, it is not necessary to keep the different sizes to be taken into account, which were explained in connection with FIG. 15.
  • the system shown schematically in FIG. 13 is from the output signal of the sensor 26, or depending on the evaluation of this signal. It can be in electronics Even certain plausibility tests can be installed to reduce the risk of malfunction to reduce, the redundancy hardly as a security measure for cost reasons it is a possibility.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung bezieht sich auf einen Sensor, womit der Arbeitsabstand von Kardengarnituren (auch "Kardierspalt" genannt) gemessen werden kann, d.h. der effektiven Abstand der Spitzen einer Garnitur von einem der Garnitur gegenüberstehenden Maschinenelement. Das letztgenannte Element kann ebenfalls eine Garnitur aufweisen, könnte aber statt dessen durch ein eine Leitfläche aufweisendes Verschalungssegment gebildet werden. Die Erfindung ist insbesondere für das Messen des Arbeitsabstandes zwischen dem Tambour und den Deckeln eines Wanderdeckelaggregates konzipiert, ist aber nicht darauf eingeschränkt.The invention relates to a sensor, with which the working distance of card clothing (also called "carding gap") can be measured, i.e. the effective Distance of the tips of a set from a machine element opposite the set. The latter element can also have a set, but could instead by a formwork segment having a guide surface be formed. The invention is particularly for measuring the working distance designed between the drum and the covers of a revolving cover assembly, but is not limited to this.

Die Erfindung befasst sich auch mit einer Regelung zum "on-line" Beeinflussen des "Kardierspaltes", d.h. ohne die Arbeit der Karde zu unterbrechen. Die Erfindung ist insbesondere, aber nicht ausschliesslich, zur Anwendung in der Wanderdeckelkarde konzipiert.The invention also relates to a regulation for influencing the on-line "Carding gap", i.e. without interrupting the work of the card. The invention is particularly but not exclusively, designed for use in the revolving flat card.

Bedeutung des Kardierspaltes/Ausgangslage:Meaning of the carding gap / starting position:

Der Kardierspalt ist für die Kardierqualität massgebend.The carding gap is decisive for the carding quality.

Der Kardierspalt ist der Abstand zwischen einer Garnitur und einem der Garnitur gegenüberstehenden Element. Die Grösse (Weite) des Kardierspaltes ist ein wesentlicher Maschinenparameter, welcher sowohl die Technologie (die Faserverarbeitung) wie auch das Laufverhalten der Maschine prägt. Der Kardierspalt wird möglichst eng eingestellt (er wird in Zehntelmillimeter gemessen), ohne das Risiko einer "Kollision" der Arbeitselemente einzugehen. Um eine gleichmässige Verarbeitung der Fasern zu gewährleisten, muss der Spalt über der ganzen Arbeitsbreite der Maschine möglichst gleich sein. Die Arbeitsbreite der konventionellen Wanderdeckelkarde beträgt ca. ein Meter, wobei breitere Karden vorgeschlagen worden sind. The carding gap is the distance between a clothing and one opposite the clothing Element. The size (width) of the carding gap is an important one Machine parameters, which both the technology (the fiber processing) as the running behavior of the machine also has an impact. The carding gap is set as narrow as possible (it is measured in tenths of a millimeter) without the risk of a "collision" of the To include work items. To ensure even processing of the fibers, the gap across the entire working width of the machine must be equal. The working width of the conventional revolving flat card is approx Meters, with wider cards being proposed.

Der Kardierspalt wird grundsätzlich durch zwei Faktoren beeinflusst, nämlich die Maschineneinstellungen einerseits und den Zustand der Garnitur andererseits.The carding gap is fundamentally influenced by two factors, namely the machine settings on the one hand and the condition of the set on the other.

Der wichtigste Kardierspalt der Wanderdeckelkarde befindet sich in der Hauptkardierzone, d.h. zwischen dem Tambour und dem Wanderdeckelaggregat. Dieser Spalt wird seit Jahrzehnten mittels eines sogenannten Flexibelbogens eingestellt. Die Einstellarbeit erfordert aber speziell geschultes Wartungspersonal und die Maschine kann während des Neueinstellens nicht weiterlaufen. Das Neueinstellen findet daher normalerweise nur beim Neugarnieren der Maschine bzw. bei einem Garniturservice statt, d.h. nach Arbeitsintervallen von einigen Monaten bis zu zwei Jahren. Dabei ist es bekannt, dass die Kardierarbeit durch das "on-line" Einstellen der Maschinenelemente insofern "optimiert" werden könnte, als die unvermeidlichen Zustandsänderungen in den Garnituren mindestens teilweise durch das entsprechende Anpassen der Maschineneinstellungen ausgeglichen werden.The most important carding gap of the revolving card is in the main carding zone, i.e. between the drum and the revolving cover assembly. This gap will set for decades using a so-called flexible bow. The adjustment work but requires specially trained maintenance personnel and the machine can be used during of resetting does not continue. The readjustment therefore usually takes place only when re-garnishing the machine or at a clothing service, i.e. after working intervals from a few months to two years. It is known that the carding work by the "on-line" setting of the machine elements could be "optimized" as the inevitable state changes in the sets at least in part by adjusting the machine settings accordingly be balanced.

Stand der Technik bezüglich der Kardierspaltsensorik:State of the art with regard to carding gap sensors:

Die DE-C-29 48 825 stellt den nächstliegenden stand der Technik dar. Die Schrift schlägt vor (Spalte 7, Zeilen 15 bis 22) den Abstand zwischen zwei zylindrischen Flächers (mit "a" bezeichnet) in der Karde direkt zu messen. Aus der Beschreibung dieses Abstandes "a" (Spalte 4, Zeilen 55 bis 57) ist aber nicht genau festzustellen, ob es um den Arbeitsabstand in der vorerwähnten Sinne handelt, oder nicht. Es fehlen auf jeden Fall sämtliche Angaben darüber, wie das erwünschte Ergebnis zu erreichen wäre.The DE-C-29 48 825 represents the closest prior art. The Scripture proposes (column 7, lines 15 to 22) the distance between two cylindrical surfaces (labeled "a") to measure directly in the card. From the description of this distance "a" (Column 4, lines 55 to 57) but it is not possible to determine exactly whether it is the working distance acts in the aforementioned sense or not. In any case, they are all missing Information on how to achieve the desired result.

Eine ähnliche Aufgabe ist in DE-A-42 35 610 nochmals aufgegriffen worden. In diesem Fall soll ein Messsensor im garnierten Bereich vorgesehen werden. Der Sensor erzeugt ein Messfeld, das sich in der Richtung der einen Garnitur erstreckt, wobei die "Höhe" des Sensors gegenüber der anderen Garnitur vorbestimmt wird. Unklar ist, wie das System auf Änderungen in der zweiten Garnitur (z.B. auf Verschleiss) reagieren sollte (vgl. Fig. 2 und Fig. 4C der DE-A-42 35 610). A similar task has been taken up again in DE-A-42 35 610. In this In this case, a measuring sensor should be provided in the garnished area. The sensor generates a measuring field that extends in the direction of one set, the "height" of the sensor compared to the other set is predetermined. It's unclear how that System should react to changes in the second set (e.g. wear) (see Fig. 2 and Fig. 4C of DE-A-42 35 610).

Die Aufgabe der Sensorik:The task of sensors:

Eine "Garnitur" besteht aus einer Vielzahl von einzelnen Vorsprünge ("Spitzen"), die von einer Trägerfläche in den Arbeitsbereich der Karde hervorstehen (siehe Handbuch der textilen Fertigung, Band 2: Putzerei und Karderie - The Textile Institute, Autor: W. Klein). Diese Spitzen weisen eine möglichst hohe "Dichte" auf, bilden trotzdem keine kontinuierliche Fläche, die als solche abgetastet werden kannA "set" consists of a large number of individual projections ("tips") that protrude from a support surface into the working area of the card (see manual der textile manufacture, Volume 2: Cleaning and Carding - The Textile Institute, Author: W. Small). These peaks have the highest possible "density", yet do not form any continuous area that can be scanned as such

Die Arbeitsabstände zwischen den Garnituren einer modernen Karde sind schon sehr klein (man misst sie in Zehntelmillimeter) und man strebt an, sie weiter zu reduzieren. Die Arbeitsbreite der Karde (d.h. die Breite der garnierten Flächen, wo Fasern möglichst gleichmässig verarbeitet werden sollten) liegt bei ca. einem Meter oder mehr. Der Arbeitsabstand sollte über der ganzen Arbeitsbreite gleich sein.The working distances between the sets of a modern card are very high small (you measure it in tenths of a millimeter) and you strive to reduce it further. The working width of the card (i.e. the width of the garnished areas, where fibers where possible should be processed evenly) is about one meter or more. The Working distance should be the same across the entire working width.

Mindestens eine Garnitur, die am Arbeitsabstand angrenzt, ist in Bewegung, meistens beide. Um die Produktion der Karde zu erhöhen, versucht man die Betriebsdrehzahl bzw. die Betriebsgeschwindigkeit der beweglichen Elemente so hoch zu wählen, wie die Technologie der Faserverarbeitung dies erlaubt.At least one set that is adjacent to the working distance is in motion, mostly both. To increase the production of the card, try the operating speed or to choose the operating speed of the movable elements as high as the technology of fiber processing allows this.

Der Arbeitsabstand ändert sich in Abhängigkeit von den Betriebsverhältnissen, wie schon im oben erwähnten Stand der Technik zutreffend erklärt wird. Auf eine Wiederholung der Erklärung kann hier verzichtet werden, da sie sowieso jedem Fachmann bekannt ist. Die Veränderung findet in der radialen Richtung (ausgehend von der Drehachse des Tambours) statt.The working distance changes depending on the operating conditions, such as is already correctly explained in the above-mentioned prior art. For a repeat the explanation can be omitted here, since it is known to any expert anyway is. The change takes place in the radial direction (starting from the axis of rotation des Tambours) instead.

Ganz abgesehen von den kleinen Dimensionen der zu messenden Arbeitsabständen, sind die Platzverhältnisse in der Karde knapp.Quite apart from the small dimensions of the working distances to be measured, the space in the card is scarce.

Die Erfindung im Bereich "Sensorik":The invention in the field of "sensors":

Diese Erfindung geht von Erkenntnissen zum Thema "Sensorik" aus, dass es nur dann möglich ist, auf den effektiven Arbeitsabstand zu schliessen, wenn dieser Abstand "von der Seite" (der Arbeitsbreite) abgetastet wird. Dies ist so wegen der Veränderbarkeit des zu messenden Abstandes - man muss ihn in einer Richtung beobachten, die quer zur "Veränderungsrichtung" steht.This invention is based on findings on the subject of "sensors" that it is only then it is possible to deduce the effective working distance if this distance "from the side "(the working width) is scanned. This is because of the changeability of the distance to be measured - you have to observe it in a direction that is transverse stands for "direction of change".

Wünschenswert ist ein Tastmittel, das von Seite zu Seite über der ganzen Arbeitsbreite wirksam ist, wobei natürlich berührungslos gearbeitet werden muss. Eine solche Anforderung kann nur mit einem Strahl erfüllt werden, z.B. mit einem Lichtstrahl, insbesondere mit einem Laserstrahl. Der Strahl könnte derart durch den Arbeitsbereich gerichtet werden, dass er zum Teil durch die dem Arbeitsabstand angrenzenden Elementen zerstreut (bzw. "abgehalten") wird, wobei der Mass der Zerstreuung oder das noch verbleibende Licht als Mass für den zu messenden Abstand verwendet wird.A touch probe that extends from side to side across the entire working width is desirable is effective, although of course you have to work without contact. Such a requirement can only be fulfilled with one beam, e.g. with a beam of light, in particular with a laser beam. The beam could thus be directed through the work area that it is partly due to the elements adjacent to the working distance is scattered (or "held"), the degree of dispersion or that remaining light is used as a measure of the distance to be measured.

Das erwähnte Messprinzip stellt aber sehr hohe Anforderungen sowohl an die Genauigkeit des Ausrichtens vom Messgerät als auch an die Auswertung der gewonnenen Signale. Geräte, die solche Anforderungen erfüllen können, sind meistens empfindlich gegenüber Umwelt- bzw. Umgebungseinflüssen, wie z.B. Vibrationen, Temperatur, Staubgehalt der Umgebungsluft, Verflugung usw. Es ist daher möglich, dass sie sich als zu wenig robust für den Langzeiteinsatz in einer Spinnerei erweisen werden, was aber einen kurzfristigen Einsatz z.B. bei der Inbetriebnahme der Maschine (Grundeinstellungen festlegen) bzw. beim Unterhalt oder Warten (Neugarnieren) nicht ausschliesst.The measuring principle mentioned, however, places very high demands on both accuracy the alignment of the measuring device as well as the evaluation of the obtained Signals. Devices that can meet such requirements are usually sensitive against environmental or environmental influences, e.g. Vibrations, temperature, Dust content in the ambient air, flying, etc. It is therefore possible that it what will prove to be too little robust for long-term use in a spinning mill but a short-term assignment e.g. when starting up the machine (basic settings not exclude) during maintenance or waiting (re-hinge).

Ein relativ robustes Gerät wird aber nicht in den Arbeitsbereich "eindringen" können, d.h. es kann nur die Verhältnissen in den Seitenzonen des Arbeitsbereiches abtasten. Sofern diese Verhältnisse für den gesamten Arbeitsbereich repräsentativ sind, kann dadurch die Gesamtaufgabe gelöst werden. Die Ergebnisse aus einer Seitenzone können allenfalls durch Ergebnisse ergänzt werden, die durch anderen Mitteln gewonnen werden, z.B. durch ein Verfahren nach DE-A-42 35 610. Schliesslich kann es sich auch als nützlich erweisen, nur eine Teilaufgabe zu lösen. A relatively robust device will not be able to "penetrate" the work area, i.e. it can only sample the conditions in the side zones of the work area. If these conditions are representative of the entire work area, can thereby solving the whole task. The results from a page zone can if necessary, be supplemented by results obtained by other means e.g. by a method according to DE-A-42 35 610. Finally, it can also prove useful to solve only one subtask.

Ein relativ robustes Gerät, das nur zum Beobachten einer Seitenzone geeignet ist, kann z.B. eine Kamera umfassen, die mit einer Auswertung zusammenarbeitet, welche eine Bildanalyse ermöglicht. Ein allfälliges Problem besteht darin, dass, wie schon erwähnt, eine Garnitur (auch von der Seite) keine kontinuierliche (geschlossene) Fläche bildet, was die Bildanalyse erheblich erschweren könnte. Dieses Problem könnte dadurch entschärft werden, dass die "Blende" der Kamera (ob mechanisch oder elektronisch) derart langsam im Vergleich zur Bewegungsgeschwindigkeit der Gamiturelementen gewählt wird, dass die Elemente im daraus entstehenden Bild doch eine (ausreichend) geschlossene Fläche bilden. Die gleiche Wirkung könnte dadurch erzielt werden, dass sequentiell geknipste Bilder aufeinander gelegt werden, um das zu analysierende Kompositbild zu erstellen, was mit einer elektronischen Auswertung ohne weiteres möglich ist. Wichtig dafür ist die Digitalisierung der Bildsignale und deren Speicherung - die entsprechenden Einrichtungen sind vorzugsweise in der Auswertung vorzusehen.A relatively robust device that is only suitable for observing a side zone, can e.g. include a camera that works with an evaluation, which enables image analysis. A possible problem is that, as already mentioned, a set (also from the side) no continuous (closed) surface forms what could make image analysis considerably more difficult. This could cause this problem be defused that the "aperture" of the camera (whether mechanical or electronic) so slow compared to the speed of movement of the gamitur elements is chosen so that the elements in the resulting image are (sufficient) form a closed surface. The same effect could be achieved that sequentially snapped images are placed on top of each other to analyze the Composite image to create what with an electronic evaluation without further ado is possible. The digitization of the image signals and their storage is important for this - The appropriate facilities should preferably be provided in the evaluation.

Stand der Technik bezüglich dem Nachstellen:State of the art regarding re-adjustment:

Das Konzept des "kontinuierlichen" Neueinstellens ist in DE-C-29 48 825 aufgeführt, wonach ein Arbeitsabstand in Funktion einer Grösse verändert wird, die mit den Dimensionen eines Kardenzylinders (mit dem Tambourdurchmesser) einen Zusammenhang aufweist, wobei diese Grösse einen "Abstand a" (Spalte 7, Zeile 18) sein kann. Das kontinuierliche Einstellen des Wanderdeckelaggregates ist in den Figuren 3 und 4 gezeigt. Die Schrift rät aber eher davon ab, das Messen des Abstandes "a" zu probieren (Spalte 7, Zeilen 28 bis 31).The concept of "continuous" readjustment is listed in DE-C-29 48 825, after which a working distance is changed in function of a size, that with the dimensions a card cylinder (with the reel diameter) has, which size can be a "distance a" (column 7, line 18). The continuous adjustment of the revolving lid assembly is shown in FIGS. 3 and 4 shown. The writing advises against trying to measure the distance "a" (Column 7, lines 28 to 31).

EP-C-384 297 und DE-A-42 35 610 befassen sich hauptsächlich mit dem Problem des Messens von Grössen, die für die Beurteilung eines Kardierspaltes von Bedeutung sind. Eine Regelung für den Kardierspalt ist in beiden Schriften erwähnt, wobei keine konkreten Vorschlägen für die Realisierung darin zu finden sind. DE-A-41 15 960 sieht ein System vor, wonach das kontinuierliche Einstellen anhand einer (Qualitäts)-Überwachung des Produktes der Karde ausgeführt wird.EP-C-384 297 and DE-A-42 35 610 deal mainly with the problem of Measuring sizes that are important for the assessment of a carding gap are. A regulation for the carding gap is mentioned in both documents, but none concrete proposals for implementation can be found in it. DE-A-41 15 960 sees a system according to which the continuous adjustment based on a (quality) monitoring of the product of the card.

EP-A-627 508 befasst sich ebenfalls mit dem Problem des Messsystems, zeigt aber auch in den Figuren 12 und 13 Vorschlägen für die Aktorik, die zum Neueinstellen von Maschinenelemente verwendet werden könnte.EP-A-627 508 also deals with the problem of the measuring system, but shows also in FIGS. 12 and 13 proposals for the actuators that are used to reset Machine elements could be used.

Trotz diesen Vorschlägen ist es bislang nicht gelungen, die Regelung praxisreif zu gestalten. Die verbleibenden Probleme liegen zum Teil im hohen Aufwand, zum Teil noch im zuverlässigen Gewinnen eines einschlägigen Messwertes als Leitwert für die Regelung und zum Teil in den hohen Risiken, die mit einer allfälligen Fehlfunktion verbunden wären. Es ist nämlich zu berücksichtigen, dass die Karde eine wesentliche Aufgabe in allen Arten der Spinnereivorbereitungen zu erfüllen hat (keine Ausweichmöglichkeit, gleichgültig welches Spinnverfahren verwendet wird), dass jede Spinnereivorbereitung mehrere Karden umfasst, dass es sich kaum lohnt nur einzelne Karden zu regeln (ausser zu Versuchszwecken), dass die Karden mehr oder weniger dauernd in Einsatz sind, und dass man kaum mit 100% Zuverlässigkeit von Sensoren über die Dauer rechnen darf. Weiter muss im Falle eines "Katastrophalfehlers" allenfalls mit dem Totalverlust der Maschine selbst (mit den entsprechenden Folgekosten) gerechnet werden.Despite these proposals, it has not yet been possible to make the regulation ready for practical use. The remaining problems are partly in the high effort, partly still in the reliable acquisition of a relevant measured value as a guide value for the control and partly in the high risks associated with a possible malfunction would. It should be borne in mind that the card is an essential task in has to fulfill all types of spinning preparations (no alternative, no matter what spinning process is used) that every spinning preparation several cards includes that it is hardly worthwhile to regulate only individual cards (except for experimental purposes) that the cards are used more or less continuously are, and that you can hardly with 100% reliability of sensors over time can count. Furthermore, in the event of a "catastrophic error" at most, the total loss the machine itself (with the corresponding follow-up costs).

Es ist deshalb verständlich, dass vorsichtigere "Strategien" entwickelt worden sind, um das "Nachstellen ohne Maschinenstopp" zu ermöglichen, ohne die hohen Risiken der Abhängigkeit von schwer nachprüfbaren Messwerte in Kauf nehmen zu müssen. Ein solcher Vorschlag befindet sich in WO 95/33875, wonach Einstellgeräte vorgesehen sind, die manuell betätigt werden können, um eine vorgebbare Anpassung der Maschineneinstellungen zu bewirken. Das System ist so sicher und so genau wie die Menschen, die es verwenden. Die noch unveröffentlichte Patentanmeldung EP 96 101 466 vom 02.02.1966 der Anmelderin (USSN 08/508704 vom 28.07.95) beschreibt eine steuerbare Aktorik, welche das Neueinstellen anhand von Leitgrössen ermöglicht, die sich aus den Betriebsverhältnissen der Maschine ermitteln lassen, z.B. aus der Arbeitsdauer und der Produktion, welche den Momentanzustand der Garnitur beeinflussen. Diese Leitgrössen weisen nur einen mittelbaren (indirekten) Zusammenhang mit dem Kardierspalt auf, dafür sind sie leichter und zuverlässiger festzustellen und sie lassen das Einprogrammieren von grösseren Sicherheitsmargen zu. It is therefore understandable that more cautious "strategies" have been developed to to enable "readjustment without machine stop" without the high risks of Depending on hard-to-verify measured values. On Such a proposal is in WO 95/33875, according to which setting devices are provided are that can be operated manually to adjust the machine settings to effect. The system is as secure and as accurate as the people who use it. The as yet unpublished patent application EP 96 101 466 from 02.02.1966 of the applicant (USSN 08/508704 from 28.07.95) describes one controllable actuators, which enables readjustment on the basis of guide variables that can be determined from the operating conditions of the machine, e.g. from working hours and production, which affect the current status of the set. These guidelines only have an indirect (indirect) connection with the carding gap, but they are easier and more reliable to determine and leave them programming larger safety margins.

Die Sensorik kann nach den bekannten Prinzipien arbeiten, z.B. nach DE-C-29 48 825, oder EP-C-384 297, oder DE-A-42 35 610, oder DE-A-41 15 968. Die bevorzugte Sensorik arbeitet aber nach den Prinzipien der vorerwähnten Sensorik, wonach der Kardierabstand von der Seite des Arbeitsbereiches berührungslos abgetastet wird.The sensor system can work according to the known principles, e.g. according to DE-C-29 48 825, or EP-C-384 297, or DE-A-42 35 610, or DE-A-41 15 968. The preferred sensor technology but works on the principles of the aforementioned sensor technology, according to which the carding distance is scanned contactless from the side of the work area.

Die Aktorik kann auch nach schon vorhandenen Prinzipien arbeiten, z.B. nach DE-C-29 48 825, oder EP-A-627 508, oder (in der bevorzugten Ausführung) nach der EP Anmeldung Nr. 96 101 466 vom 2.2.1996.The actuators can also work according to existing principles, e.g. to DE-C-29 48 825, or EP-A-627 508, or (in the preferred embodiment) according to the EP Application No. 96 101 466 dated February 2, 1996.

Die genannte Garnitur kann auf dem Tambour aufgezogen sein und der zu regelnden bzw. zu steuernden Kardierspalt kann in der Hauptkardierzone (zwischen der Tambourgarnitur und den Deckelgarnituren) vorhanden sein. The set mentioned can be wound on the reel and the one to be regulated or the carding gap to be controlled can be found in the main carding zone (between the drum set and the cover sets).

Ausführungen der Erfindung werden nachfolgend anhand der Figuren der Zeichnungen erläutert. Es zeigt:

Fig. 1
schematisch eine Ansicht einer Karde,
Fig. 2
schematisch vier Deckelstäbe in ihrer Arbeitsstellungen gegenüber dem Tambour, wobei die dargestellten Elemente von der Seite (in der gleichen Richtung wie in Fig. 1) betrachtet werden,
Fig. 3
schematisch einen Teil des Arbeitsbereiches der Karde nach Fig. 2 in der Umfangsrichtung (rechtwinklig zur Betrachtungsrichtung nach Fig.1) gesehen,
Fig. 4
schematisch eine erste Anordnung nach der Sensorik-Erfindung, als eine Modifikation der Anordnung nach Fig. 3 dargestellt,
Fig. 5
ein Detail aus der Anordnung nach Fig. 4, von der Seite (rechtwinklig zur Fig. 4) betrachtet,
Fig. 6
das gleiche Detail bei einer Veränderung des Kardierabstandes,
Fig. 7
schematisch eine zweite Anordnung nach der Sensorik-Erfindung, ebenfalls als eine Modifikation der Anordnung nach Fig. 3 dargestellt,
Fig. 8
eine schematische Darstellung der Zähne der Tambourgarnitur (von der Seite betrachtet), um die Arbeitsweise der zweiten Ausführung zu veranschaulichen,
Fig. 9
eine Seitenansicht des Arbeitsbereiches gemäss Fig. 2, um die Arbeitsweise der zweiten Ausführung näher zu erklären,
Fig. 10 und 11
verschiedene Möglichkeiten zum Auswerten der Bilder,
Fig.12
eine schematische Darstellung verschiedener Möglichkeiten zum Ausnutzen der Ergebnisse, die mittels Geräte nach der Fig. 4 bzw. nach der Fig. 7 erzielt werden können,
Fig. 13
ein Diagramm zur Erklärung einer der Möglichkeiten,
Fig. 14
schematisch einen Flexibelbogen mit einer steuerbaren Einstellaktorik,
Fig. 15
ein Diagramm zur Erklärung einer Möglichkeit zum Steuern die Aktorik nach Fig. 14,
Fig. 17
ein Diagramm zur Erklärung der Notwendigkeit für gewisse Einschränkungen der Regelung nach Fig. 4 bzw. 13, und
Fig. 18
eine schematische Darstellung einer Modifikation der Anordnung nach Fig. 14 gemäss der bevorzugten Ausführung der vorliegenden Erfindung.
Embodiments of the invention are explained below with reference to the figures of the drawings. It shows:
Fig. 1
schematically a view of a card,
Fig. 2
schematically four flat bars in their working positions opposite the drum, the elements shown being viewed from the side (in the same direction as in FIG. 1),
Fig. 3
schematically seen a part of the working area of the card according to FIG. 2 in the circumferential direction (perpendicular to the viewing direction according to FIG. 1),
Fig. 4
schematically shows a first arrangement according to the sensor technology invention, shown as a modification of the arrangement according to FIG. 3,
Fig. 5
4, viewed from the side (at right angles to FIG. 4),
Fig. 6
the same detail when changing the carding distance,
Fig. 7
schematically shows a second arrangement according to the sensor technology invention, also shown as a modification of the arrangement according to FIG. 3,
Fig. 8
a schematic representation of the teeth of the drum set (viewed from the side) to illustrate the operation of the second embodiment,
Fig. 9
2 shows a side view of the work area according to FIG. 2 in order to explain the mode of operation of the second embodiment in more detail,
10 and 11
different ways of evaluating the images,
Figure 12
FIG. 2 shows a schematic representation of various possibilities for utilizing the results that can be achieved by means of devices according to FIG. 4 or according to FIG. 7,
Fig. 13
a diagram to explain one of the ways
Fig. 14
schematically a flexible arch with a controllable setting actuator,
Fig. 15
14 shows a diagram for explaining a possibility for controlling the actuator system according to FIG. 14,
Fig. 17
a diagram to explain the need for certain restrictions of the control according to Fig. 4 and 13, and
Fig. 18
a schematic representation of a modification of the arrangement of FIG. 14 according to the preferred embodiment of the present invention.

In Fig. 1 ist eine an sich bekannte Wanderdeckelkarde, z.B. die Karde C50 der Anmelderin, schematisch dargestellt. Das Fasermaterial wird in der Form von aufgelösten und gereinigten Flocken in den Füllschacht 2 eingespeist, von einem Briseur 3 (auch Vorreisser genannt) als Wattenvorlage übernommen, einem Tambour (oder Trommel) 4 übergeben und durch die Zusammenarbeit des Tambours mit einem Wanderdeckelsatz 5 aufgelöst und gereinigt. Die Deckel des Wanderdeckelsatzes 5 werden durch einen geeigneten Antriebssystem des Wanderdeckelaggregates über Umlenkrollen 6 einem geschlossenen Pfad entlang (gleichläufig oder gegenläufig zur Drehrichtung des Tambours) geführt. Fasern aus dem auf dem Tambour 4 befindlichen Vlies werden von einem Abnehmer 7 abgenommen und in einer aus verschiedenen Walzen bestehenden Auslaufpartie 8 zu einem Faserband 9 gebildet. Dieses Kardenband 9 wird von einer Bandablage 10 in eine Transportkanne 11 in zykloidischen Windungen abgelegt.In Fig. 1 a known known revolving card, e.g. the applicant's C50 card, shown schematically. The fiber material is in the form of dissolved and cleaned flakes fed into the chute 2 by a breeze 3 (also licker-in called) as a wadding, a drum (or drum) 4 handed over and by the cooperation of the drum with a traveling cover set 5 dissolved and cleaned. The cover of the revolving cover set 5 are replaced by a suitable drive system of the revolving cover assembly via deflection rollers 6 one closed path (in the same direction or opposite to the direction of rotation of the drum) guided. Fibers from the fleece located on the reel 4 are separated from one Customer 7 removed and in an existing of different rollers Outlet section 8 formed into a sliver 9. This card sliver 9 is one Tape storage 10 placed in a transport can 11 in cycloidal turns.

Der Winkelbereich des Tambourumfanges, welcher dem Wanderdeckelaggregat direkt gegenübersteht, kann als "Hauptkardierzone" bezeichnet werden, darin wird der grösste Teil der Kardierarbeit geleistet. Der Winkelbereich zwischen dem Vorreisser 3 und dem Wanderdeckelaggregat kann als "Vorkardierzone" und der Winkelbereich zwischen dem Wanderdeckelaggregat und dem Abnehmer 7 als "Nachkardierzone" bezeichnet werden. Schliesslich kann der Winkelbereich zwischen dem Abnehmer 7 und dem Vorreisser 3 als "Unterkardierzone" bezeichnet werden. Die Erfindung befasst sich insbesondere mit dem Messen des Kardierabstandes in der Hauptkardierzone und die weiteren Figuren zeigen ausschliesslich diese Zone. Die Erfindung ist aber nicht auf diese Anwendung eingeschränkt, sie kann ebenfalls zum Messen des Abstandes der Tambourgarnitur von anderen, ihr gegenüberstehenden Elemente benutzt werden, wie abschliessend kurz näher erklärt wird.The angular range of the drum circumference, which the revolving cover aggregate directly faces, can be called the "main carding zone", in which the done most of the carding. The angular range between the licker-in 3 and the revolving flap unit can be used as a "pre-carding zone" and the angular range between the revolving flat aggregate and the customer 7 referred to as "post-carding zone" become. Finally, the angular range between the customer 7 and the licker-in 3 are referred to as the "sub-carding zone". The invention is concerned especially with measuring the carding distance in the main carding zone and other figures show this zone only. However, the invention is not based on limited this application, it can also be used to measure the distance of the Drum kit used by other, opposing elements, such as finally briefly explained.

Der Wanderdeckelsatz 5 umfasst Deckelstäbe, die in Fig. 1 nicht einzel gezeigt, aber in Fig. 2 mit dem Bezugszeichen 13 angedeutet sind. Jeder Deckelstab ist mit einem Garniturstreifen 14 versehen, die in der Ausführung nach Fig. 2 als "halbstarre" oder flexible Garnitur gebildet ist (siehe das oben erwähnte Handbuch, Band 2, Seite 52). Der Tambour 4 trägt ebenfalls eine Garnitur 15, die als Ganzstahlgarnitur mit Zähnen 16 ausgeführt ist. Die (gegenläufigen) Bewegungsrichtungen sind durch die Pfeile angedeutet, wobei die Deckelstäbe 13 sich auch in der umgekehrten Richtung (gleichläufig) bewegen könnten. Der Bereich AB zwischen der zylindrischen Oberfläche 17 des Tambours 4 und der durch die Deckelstäbe 13 gebildeten Mantelfläche 18 wird hierin als "Arbeitsbereich" bezeichnet. Ein Deckelstab 13 befindet sich in seiner "Arbeitsstellung", wenn seine Garnitur 14 sich in den Arbeitsbereich AB erstreckt.The revolving cover set 5 comprises flat rods, which are not shown individually in FIG. 1, but in Fig. 2 are indicated with the reference numeral 13. Each flat bar is with one Garnish strips 14 provided in the embodiment according to FIG. 2 as "semi-rigid" or flexible set is formed (see the above-mentioned manual, volume 2, page 52). The drum 4 also carries a set 15, which is an all-steel set with teeth 16 is executed. The (opposite) directions of movement are indicated by the arrows, the flat bars 13 also in the opposite direction could move (in the same direction). The area AB between the cylindrical surface 17 of the drum 4 and the outer surface 18 formed by the flat bars 13 referred to herein as the "workspace". A flat bar 13 is in his "Working position" when its set 14 extends into the work area AB.

Die radiale Tiefe des Arbeitsbereiches AB kann beim Konstruieren der Maschine bestimmt werden, wobei gewisse Betriebseinflüsse berücksichtigt werden müssen. Solche Einflüsse sind, z.B., die Betriebsdrehzahl des Tambours, welche die Ausdehnung des Tambours unter der Wirkung der Fliehkraft beeinflusst, und die Wärmeerzeugung bzw. die Kühlung (falls vorhanden), welche die Veränderungen in den Arbeitselementen unter den Wirkungen der Betriebstemperaturen beeinflussen. Die Tiefe des Arbeitsbereiches AB ist aber an und für sich von weniger Bedeutung für die Qualität der Kardierarbeit als den "Kardierabstand" (bzw. den "Kardierspalt") KA zwischen den Spitzen der Garnituren 14, 15. Der Kardierabstand KA wird von der Tiefe des Arbeitsbereiches AB beeinflusst, da die Garnituren von den Flächen 17,18 ausgehen, er wird aber auch vom Verschleiss beeinflusst, welcher an den Spitzen selber entsteht, während die Karde in Betrieb steht. Dieser Verschleiss entsteht zum Teil unmittelbar aus dem Verarbeiten von Fasern, zum Teil aber auch durch das Schleifen, das periodisch durchgeführt werden muss, um die vorbestimmte Qualität der Kardierarbeit über die Dauer zu gewährleisten.The radial depth of the working area AB can be determined when designing the machine certain operating influences must be taken into account. Such Influences are, for example, the operating speed of the drum, which affects the expansion of the Drums influenced by the effect of centrifugal force, and the heat generation or the cooling (if any), which reflects the changes in the working elements affect the effects of operating temperatures. The depth of the work area But AB is in itself of less importance for the quality of the carding work as the "carding distance" (or the "carding gap") KA between the tips of the Sets 14, 15. The carding distance KA is determined by the depth of the working area AB influenced, since the sets start from the surfaces 17, 18, but it is also from the Wear influenced, which arises at the tips themselves, while the card in Operation stands. This wear arises in part directly from processing of fibers, but also partly by grinding, which are carried out periodically must to ensure the predetermined quality of the carding work over the long term.

Es ist ein alter Wunsch des Kardenkonstrukteurs, den Kardierabstand KA berührungslos messen zu können, dies aus verschiedenen Gründen, z.B.

  • um die Grundeinstellungen der Karde bei der Montage bzw. bei der Wartung objektiv feststellen zu können,
  • um die Grösse des Kardierabstandes als Bedienungshilfe anzeigen zu können, und
  • um die Grösse des Kardierabstandes regeln zu können.
It is an old wish of the card designer to be able to measure the carding distance KA without contact, for various reasons, e.g.
  • in order to be able to objectively determine the basic settings of the card during assembly or maintenance,
  • to be able to display the size of the carding distance as an operating aid, and
  • to control the size of the carding distance.

Keiner der bisherigen Vorschläge hat diesen Wunsch überzeugend erfüllen können. Neue Ansätze für solchen Lösungen werden nachfolgend anhand der Figuren 4 bis 11 näher erklärt. Vorerst wird das Problem anhand der Figur 3 noch näher erläutert.None of the previous proposals has been able to convincingly fulfill this wish. New approaches for such solutions are described below with reference to FIGS. 4 to 11 explained in more detail. For the time being, the problem is explained in more detail with reference to FIG. 3.

Die Figur 3 zeigt nochmals die zylindrische Fläche 17 des Tambours 4 und die Mantelfläche 18 der Arbeitsstellungen der Deckelstäbe 13 und zwar über der ganzen Arbeitsbreite KB der Karde. Die Arbeitsbreite KB einer heute konventionellen Karde zur Verarbeitung von Baumwolle oder Fasern mit einer entsprechenden Stapellänge beträgt ca. 1 Meter. Die Drähte 20 und die Zähne 16 der Garnituren 14,15 sind auch zum Teil in Figur 3 dargestellt, um den Kardierabstand KA wieder schematisch anzeigen zu können, wobei zu erwähnen ist, dass die Verhältnisse der Grössen in der Figur verzerrt werden mussten, um die Darstellung überhaupt zu ermöglichen. Der Kardierabstand in der Hauptkardierzone einer Wanderdeckelkarde beträgt heute ca. 0,2 bis 0,25 mm. In Figur 3 ist angenommen worden, dass die Spitzenhöhe beider Garnituren sowie die Tiefe des Arbeitsbereiches AB über der ganzen Arbeitsbreite KB konstant sind. Diese Annahme ist für die Praxis nicht unbedingt zutreffend.FIG. 3 again shows the cylindrical surface 17 of the drum 4 and the outer surface 18 of the working positions of the flat bars 13 over the entire working width KB the card. The working width KB of a conventional card for processing today of cotton or fibers with a corresponding pile length is approx. 1 meter. The wires 20 and teeth 16 of the sets 14, 15 are also partially in FIG. 3 is shown in order to be able to show the carding distance KA again schematically, it should be noted that the proportions of the sizes in the figure are distorted had to be in order to enable the display at all. The carding distance in The main carding zone of a revolving flat card is approximately 0.2 to 0.25 mm today. In Figure 3 has been assumed that the tip height of both sets and the Depth of the working area AB are constant over the entire working width KB. This In practice, assumption is not necessarily correct.

Eine erste Ausführung nach dieser Erfindung wird nachfolgend anhand der Figuren 4 bis 6 erklärt, wobei die allgemeine Anordnung der Elemente in Figur 4 der Anordnung nach Figur 3 entspricht und soweit möglich die gleichen Bezugszeichen verwendet wurden. Die Karde nach Figur 4 umfasst zusätzlich auf einer Seite S1 ein Laser 22, um einen Laserstrahl 24 zu erzeugen, der von Seite zu Seite der Karde durch den Arbeitsbereich AB gerichtet wird. Auf der anderen Seite S2 befindet sich dem Laser 22 gegenüber ein Empfänger 26, der ein Ausgangssignal an eine Auswertung 28 in Abhängigkeit von der Intensität des empfangenden Lichtstrahls 24 abgibt. Die Auswertung 28 kann nach verschiedenen Prinzipien gestaltet werden, wie nachfolgend für beide Ausführungen gemeinsam erklärt wird.A first embodiment according to this invention is described below with reference to FIGS. 4 explained to 6, the general arrangement of the elements in Figure 4 of the arrangement corresponds to Figure 3 and uses the same reference numerals as far as possible were. The card according to FIG. 4 additionally comprises a laser 22 .mu.m on one side S1 generate a laser beam 24 that passes from side to side of the card through the work area AB is directed. The laser 22 is located on the other side S2 a receiver 26, which depends on an output signal to an evaluation 28 of the intensity of the receiving light beam 24. The evaluation 28 can are designed according to different principles, as follows for both versions is explained together.

Die Figuren 5 und 6 zeigen den Laserstrahl 24 "im Querschnitt", jeweils mit einzelnen Zähne 16 der Tambourgarnitur und einzelne Drähte 20 der Deckelstabgarnituren. Es wird in diesen Figuren angenommen, der Strahl 24 sei rund im Querschnitt, was aber für die Erfindung nicht wesentlich ist. Es wird auch angenommen, dass der Strahl 24 im Raum (gegenüber dem Kardengestell, nicht gezeigt) stationär bleibt. Die Figuren 5 und 6 unterscheiden sich bezüglich dem Kardierabstand - der Abstand KAI ist in Fig. 5 deutlich kleiner als der Abstand KAII in Fig. 6, weil im letzteren Fall die Zähne 16,20 sich wegen Verschleiss gegenüber dem Strahl 24 "zurückgebildet" haben. Figures 5 and 6 show the laser beam 24 "in cross section", each with individual Teeth 16 of the drum set and individual wires 20 of the flat bar sets. It It is assumed in these figures that the beam 24 is round in cross section, but what is not essential to the invention. It is also assumed that the beam 24 in the Room (opposite the card frame, not shown) remains stationary. Figures 5 and 6 differ with regard to the carding distance - the distance KAI is in FIG. 5 significantly smaller than the distance KAII in FIG. 6, because in the latter case the teeth 16, 20 have "regressed" to beam 24 due to wear.

In der Figur 5 ist einen erheblichen Anteil des Strahlquerschnittes durch die abgebildeten Zähne 16,20 "blockiert", sodass einen entsprechenden Anteil des Strahles 24 durch die Seitenflächen der Garniturspitzen zerstreut ("abgehalten") wird und nicht bis zum Empfänger 26 durchdringen kann. Wenn man bedenkt, dass weder die Spitzen 16 der Tambourgarnitur 15 noch die Spitzen 20 der Deckelgarnituren 14 in Reihen, sondern eher gestaffelt, über der Arbeitsbreite verteilt sind, wird klar, dass der Laserstrahl 24 praktisch nur durch den Abstand KA durchdringen kann und dass oberhalb der Hüllkurve G und unterhalb der Hüllkurve T der Strahl weitgehend ausgelöscht wird. In der Figur 6 ist ein deutlich kleinerer Teil des Strahlenquerschnittes durch die Garnituren zerstreut, sodass die vom Empfänger 26 wahrgenommene Strahlenintensität viel höher ist.FIG. 5 shows a significant proportion of the beam cross section through those shown Teeth 16, 20 "blocked" so that a corresponding portion of the beam 24 passes through the side surfaces of the clothing tips are scattered ("held") and not until Receiver 26 can penetrate. If you consider that neither the top 16 of the Reel set 15 still the tips 20 of the cover sets 14 in rows, but rather staggered, distributed over the working width, it becomes clear that the laser beam 24 can practically only penetrate through the distance KA and that above the envelope G and below the envelope T the beam is largely extinguished. In the figure 6 a significantly smaller part of the beam cross-section is scattered through the sets, so that the radiation intensity perceived by the receiver 26 is much higher.

Die Prüfergebnissen wären natürlich durch Bewegungen des Strahles gegenüber dem Gestell (der Garnituren) bzw. des Empfängers gegenüber dem Strahl verfälscht werden. Solche Bewegungen könnten z.B. durch Erschütterungen bzw. durch Vibrationen verursacht werden. Derartige Störungen werden aber normalerweise nur kurzer Dauer sein, während eine Veränderung des Kardierabstandes relativ langsam vor sich geht. Die Auswertung kann entsprechend gestaltet werden, steile Signalveränderungen können z.B. ausgefiltert werden. Dadurch kann auch das Ansprechen des Systems auf Faserbüscheln, Partikeln wie Schalenteile und einzelne, die Hüllkurve durchbrechende, Spitzen vermieden werden.The test results would of course be due to movements of the beam compared to that Frame (the sets) or the receiver can be falsified in relation to the beam. Such movements could e.g. due to shocks or vibrations caused. Such disturbances are usually short-lived be, while a change in the carding distance is relatively slow. The evaluation can be designed accordingly, steep signal changes can e.g. be filtered out. This can also affect the response of the system Tufts of fibers, particles such as shell parts and individual pieces that break through the envelope Peaks to be avoided.

Diese Ausführung stellt eine "elektronische Lehre" dar, welche auf den effektiven Kardierabstand über der ganzen Arbeitsbreite anspricht. Der Laser 22 kann von einer Treiberstufe (nicht gezeigt) erregt werden, wobei der Strahl 24 kontinuierlich oder periodisch erzeugt werden kann. Im letzteren Fall muss für den Laser 22 und für den Empfänger 26 eine gemeinsame Steuerung (nicht gezeigt) vorgesehen werden, sodass sie miteinander synchronisiert werden können.This version represents an "electronic teaching", which is based on the effective carding distance across the entire working range. The laser 22 can be from a driver stage (not shown) can be excited with the beam 24 continuously or periodically can be generated. In the latter case, the laser 22 and the receiver 26 a common controller (not shown) can be provided so that they can be synchronized with each other.

Figur 7 zeigt eine zweite Ausführung, wobei auch hier die allgemeine Anordnung derjenigen der Figur 4 entspricht und die gleichen Bezugszeichen verwendet wurden. In diesem Fall ist auf einer Seite der Karde eine Kamera 30 in der Höhe des Arbeitbereiches AB vorgesehen. Auf der anderen Seite der Karde, der Kamera 30 gegenüber, kann eine Lichtquelle 32 vorgesehen werden, wobei dies nicht unbedingt notwendig ist, da die Kamera effektiv nur den Randbereich der Arbeitsbreite abbilden kann. Falls in diesem Randbereich zu wenig Licht vorhanden ist, kann auf der gleichen Seite der Karde eine Lichtquelle (eine Blitzlampe, nicht gezeigt) vorgesehen werden. Die Kamera 30 knipst eine Momentaufnahme des ihr gegenüberstehenden Randbereiches, das dadurch gewonnene Bild wird durch dafür geeignete, bekannte Mittel 34 (nur schematisch dargestellt) digitalisiert und das daraus entstehende Signal (eine Sequenz von "Bits") wird in einem Pufferspeicher 36 gespeichert. Das Signal kann durch die Auswertung 28 vorbestimmte Muster mittels der heute konventionellen Mitteln der Bildanalyse geprüft werden. Die Muster werden nachfolgend anhand der Figuren 8 und 9 näher erläutert. Es kann auf beiden Seiten der Karde je eine Kamera vorgesehen werden.FIG. 7 shows a second embodiment, the general arrangement of those also here corresponds to Figure 4 and the same reference numerals have been used. In In this case there is a camera 30 on one side of the card in the height of the working area AB provided. On the other side of the card, facing camera 30, a light source 32 can be provided, although this is not absolutely necessary, because the camera can only effectively show the edge of the working width. If in If there is not enough light in this edge area, it can be on the same side of the Carded light source (a flash lamp, not shown) may be provided. The camera 30 snaps a snapshot of the border area opposite her, the thereby image obtained is obtained by suitable, known means 34 (only schematically digitized and the resulting signal (a sequence of "bits") is stored in a buffer memory 36. The signal can be evaluated 28 predetermined patterns checked by means of image analysis, which are conventional today become. The patterns are explained in more detail below with reference to FIGS. 8 and 9. A camera can be provided on both sides of the card.

Figur 8 zeigt schematisch die Zähne 16' eines Teils von der äusseren Drahtwindung auf dem Tambour 4 (in Fig. 8 nicht gezeigt). Die Zähne 16' sind durch vollausgezogenen Linien in ersten Winkelstellungen gezeigt, wo sie sich gerade befinden als der "Verschluss" der Kamera 30 geöffnet wird, um sie zu knipsen. Ein Bruchteil einer Sekunde später befinden sich die gleichen Zähne 16' in der durch gestrichelten Linien dargestellten Winkelstellungen. Wenn die Blende derart lang offen gehalten wird, bilden die Zähne 16' durch ihre Bewegung eine Hüllkurve T', welche der Hüllkurve T der Anordnung nach Fig. 5 und 6 stark ähnelt. Auch wenn die Blende sofort wieder geschlossen wird, ist es möglich die Hüllkurve dadurch zu bilden, dass sie wieder geöffnet wird, um die Zähne 16' in deren zweiten Winkelstellungen zu knipsen, wobei das zweite Bild in der Auswertung dem ersten Bild "aufgelegt" wird. Dieser Vorgang kann so oft wie nötig wiederholt werden, um die erforderliche "Kontinuität" der Hüllkurve T' aufzubauen. Wenn aber die Auswertung zusätzliche Aufgaben übernehmen kann, ist es nicht einmal notwendig, die Hüllkurve T' aufzubauen, sie kann vielmehr durch die Auswertung anhand der Fest-stellung von der Position der Zahnspitzen im analysierten Bild "konstruiert" werden. Figure 8 shows schematically the teeth 16 'of a part from the outer wire winding the drum 4 (not shown in Fig. 8). The teeth 16 'are fully extended Lines shown in first angular positions where they are at the moment "Closure" of the camera 30 is opened to snap it. A split second later the same teeth 16 'are in the dashed lines shown angular positions. If the aperture is kept open for so long, form the teeth 16 'by their movement an envelope T', which of the envelope T of the arrangement 5 and 6 strongly resembles. Even if the cover closes again immediately it is possible to form the envelope by opening it again, to snap the teeth 16 'in their second angular positions, the second image in the evaluation the first image is "overlaid". This process can be done as often as necessary to be repeated in order to build up the required "continuity" of the envelope curve T '. But if the evaluation can take on additional tasks, it isn't even necessary to build up the envelope T ', it can rather be based on the evaluation the determination of the position of the tooth tips in the analyzed image be "constructed".

Die Hüllkurven T und T' unterscheiden sich auf jeden Fall darin, dass die Kurve T' nur durch die Randzähne 16' gebildet wird, während sich viele Spitzen der Garnitur 15 zur Hüllkurve T beitragen. Sofern aber die Randzähne 16' für die Arbeitsverhältnisse über der ganzen Breite AB repräsentativ sind, können die Hüllkurven T und T' als effektiv identisch betrachtet werden.The envelopes T and T 'differ in any case in that the curve T' only is formed by the edge teeth 16 ', while many tips of the set 15 to Envelope T contribute. If, however, the marginal teeth 16 'for the employment relationships are representative of the entire width AB, the envelopes T and T 'can be effective are considered identical.

Die Figur 9 stellt schematisch den "Bildausschnitt" (bzw. den "Sucher") 40 der Kamera 30 dar, sowie die Randzähne 16' und Randdrähte 20', die sich beim Öffnen der Blende im Blickfeld der Kamera 30 befinden. Die "Blende" kann hier eine mechanische Vorrichtung umfassen, kann aber als Alternative durch ein elektronisches Gerät gebildet werden, das den Zustand der Kamera 30 ändert, um eine Momentaufnahme zu ermöglichen. Der Rahmen 40 ist viereckig abgebildet, was aber für die Erfindung ohne Bedeutung ist. Die Drähte 20' bilden genauso wie die Zähne 16' eine Hüllkurve G' und der Kardierabstand KA ist durch den Abstand der Hüllkurven T',G' gegeben, was durch die Bildanalyse ermittelt werden kann.FIG. 9 shows schematically the "image section" (or the "viewfinder") 40 of the camera 30 represents, as well as the edge teeth 16 'and edge wires 20', which when opening the panel are in the field of view of the camera 30. The "aperture" can be a mechanical device comprise, but can alternatively be formed by an electronic device, that changes the state of the camera 30 to allow a snapshot. The frame 40 is shown as square, but this is of no importance for the invention is. Like the teeth 16 ', the wires 20' form an envelope curve G 'and the like Carding distance KA is given by the distance between the envelopes T ', G', which by the Image analysis can be determined.

Die Figuren 10 und 11 zeigen jeweils die Hüllkurven G(G') bzw. T(T), die nach der einen oder der anderen der beschriebenen Methoden erstellt und in einem "Bild" festgehalten sind (wobei dieses Bild allenfalls aus "Bits" besteht). Die beiden Figuren zeigen zwei Möglichkeiten, die Bilder zu "analysieren" bzw. auszuwerten. In Fig. 10 ist eine fiktive Kardenlehre" vorgesehen, wobei die Auswertung so viele "Blätter" B vorgegebener Dicke zwischen den Hüllkurven "einlegt", bis der Abstand dadurch aufgefüllt ist. Die Anzahl aufgenommener Blätter B gibt den Abstand KA an. In Fig. 11 legt die Auswertung ein "Skala" S am Bild, wovon der Abstand KA abgelesen werden kann.Figures 10 and 11 each show the envelopes G (G ') and T (T), which according to one or the other of the methods described and created in an "image" are (whereby this picture consists at most of "bits"). The two figures show two ways to "analyze" or evaluate the images. 10 is one fictitious card theory "provided, the evaluation of so many" sheets "B predetermined "Insert" the thickness between the envelopes until the distance is filled. The Number of sheets B recorded indicates the distance KA. 11 sets out the evaluation a "scale" S on the image, from which the distance KA can be read.

Figur 12 zeigt nun drei Möglichkeiten, die Ergebnissen der Auswertung 28 zu verwerten. Nach einer ersten Variante, wird der ermittelte Abstand in einer Anzeige 43 dargestellt, z.B. als eine Zahl oder sogar als eine (allenfalls skalierte) Abbildung, welche vom Benutzer ausgelegt werden muss. Diese Variante ist z.B. beim Einstellen der Karde während der Montage von grossen Nutzen, da sie objektive Werte ergibt, die vom Monteur (bzw. seiner Blattlehre) unabhängig sind. FIG. 12 now shows three options for evaluating the results of the evaluation 28. According to a first variant, the determined distance is shown in a display 43, e.g. as a number or even as a (possibly scaled) figure, which is from the User must be designed. This variant is e.g. when setting the card of great benefit during the assembly, since it gives objective values that from the Fitter (or his leaf gauge) are independent.

In einer zweiten Variante wird der ermittelte Abstand in einem Vergleicher 45 mit einem (beispielsweise über eine Tastatur 47) vorgegebenen Grenzwert verglichen, so dass eine Anzeige bzw. ein Alarm erzeugt werden kann, wenn eine Toleranz erreicht, bzw. überschritten wird. Der Grenzwert kann vom Endbenutzer (z.B. vom Spinnereimeister) eingegeben werden und die daraus entstehende "on-line" Überwachung ist von Nutzen beim Bestimmen vom Zeitpunkt für die Wartung (beispielweise das Schleifen oder das Neugarnieren), aber auch zum Anzeigen von Fehlzustände, die vom Personal untersucht werden sollten.In a second variant, the determined distance is compared with a comparator 45 (for example via a keyboard 47) predetermined limit value, so that a display or an alarm can be generated when a tolerance is reached, or is exceeded. The limit value can be set by the end user (e.g. by the spinning master) entered and the resulting "on-line" monitoring is useful when determining the time for maintenance (e.g. grinding or Re-garnish), but also to indicate malfunctions, examined by the staff should be.

In einer dritten Variante wird der ermittelte Abstand eine Regelung 49 zugeführt, wo er mit einem vorgegebenen Sollwert verglichen wird, so dass bei einer Abweichung A vom Sollwert eine Aktorik 50 betätigt werden kann, um die Position der Deckelstäbe gegenüber dem Tambour neu zu bestimmen und dadurch die Abweichung auszugleichen. Letztere Arbeitsweise, welche eine "on-line" Optimierung ermöglicht, wird etwas näher anhand der Figur 13 erklärt, wobei die Anordnung nach Figur 4 angenommen wird und die schon verwendeten Bezugszeichen die gleichen Elemente wie vorher anzeigen.In a third variant, the determined distance is fed to a control 49, where it is compared with a predetermined target value, so that in the event of a deviation A from Target value an actuator 50 can be actuated to the position of the flat bars opposite redetermine the drum and thereby compensate for the deviation. The latter way of working, which enables "on-line" optimization, is somewhat closer explained with reference to Figure 13, the arrangement of Figure 4 is assumed and the reference symbols already used indicate the same elements as before.

Zusätzlich zu den schon beschriebenen Elementen zeigt die Figur 13 schematisch zwei Flexibelbogen 44,46 (je einen pro Kardenseite), worauf die Deckelstäbe 13 gleiten. Die vorerwähnte Aktorik 50 umfasst einen Motor M und eine geeignete Motorensteuerung 48, welche die Ausgangssignale des Vergleichers 49 in Steuersignale für den Motor M umwandelt, um die Position der einen oder der anderen oder beiden Flexibelbogen 44,46 gegenüber dem Kardengestell (nicht gezeigt) zu verändern und dadurch den Kardierabstand KA entsprechend zu verändern. Eine geeignete Einstellaktorik für den Flexibelbogen ist in EP 96 101 466 vom 2.2.96 gezeigt worden. Der volle Inhalt letzterer Anmeldung wird in der vorliegenden Anmeldung integriert, so dass auf eine Wiederholung der entsprechenden Beschreibung verzichtet werden kann.
Grundsätzlich kann nun folgenderweise vorgegangen werden:

  • 1) Der Strahl 24 wird derart ausgerichtet, dass unter gegebenen Betriebsverhältnissen (Tambourdrehzahl bzw. -temperatur, sowie Zahnhöhe der Zähne 16) ein vorgegebener Teil des Strahles 24 unterhalb der Hüllkurve T (Fig. 5) vom Empfänger 26 abgeblockt wird. Dieser (Grund)Zustand muss spezifisch eingerichtet werden, vorzugsweise durch speziell dafür ausgebildetes Personal.
  • 2) Die Aktorik 50 wird dann derart betätigt, dass die Hüllkurve G (Fig. 5) innerhalb eines vorbestimmten Toleranzbereiches gegenüber der Hüllkurve T liegt. Dieser Ausangszustand gehört ebenfalls zum Grundzustand, der speziell herbeigeführt werden muss, z.B. mittels der Anzeige 43 (Fig. 12) sowie einer manuellen Betätigung der gesteuerten Aktorik 50.
  • 3) Der Regler 49,48 wird nun eingeschaltet, beginnt den IST-Wert des Kardierabstandes KA mit dem vorgegebenen Sollwert zu vergleichen und steuert den Motor M, um allfällige Abweichungen zu eliminieren. Es spielt daher keine Rolle, dass die Karde vor der Inbetriebnahme in ihren Grundzustand eingestellt wird, die anschliessenden Änderungen in den Arbeitselementen während des Hochlaufes werden vom Regler ausgeglichen werden, so dass der vorgegebene Kardierabstand stets eingehalten wird. Wichtig ist aber, dass der Grundzustand die Stellung der Zähne 16 beim Erreichen des Betriebszustandes berücksichtigt.
  • 4) Während des normalen Betriebes (unter stabilen Arbeitsverhältnissen) ändern sich die Stellungen der Zähne 16 bzw. Drähte 13 wegen Temperaturänderungen nur unwesentlich. Die Zahnhöhe bzw. die Drahthöhe ändert sich aber wegen "Verschleiss", was hier die Wirkung des Schleifens einschliesst. Die Zähne 16 bilden sich dementsprechend gegenüber dem Strahl 24 zurück und die Drähte 13 werden gegenüber dem stationären Strahl 24 verkürzt, wobei die Aktorik 50 stets vom Regler 49,48 betätigt wird, um den Kardierabstand KA möglichst konstant am Sollwert zu halten. Die Hüllkurve T bildet daher stets eine "Referenzfläche" und die Aktorik 50 wird gesteuert, um das Wanderdeckelaggregat derart einzustellen, dass der Kardierabstand KA gegenüber der Referenzfläche eingehalten wird.
  • In addition to the elements already described, FIG. 13 shows schematically two flexible sheets 44, 46 (one on each card side), on which the flat bars 13 slide. The aforementioned actuator system 50 comprises a motor M and a suitable motor controller 48, which converts the output signals of the comparator 49 into control signals for the motor M in order to position the one or the other or both flexible bends 44, 46 relative to the card frame (not shown) change and thereby change the carding distance KA accordingly. A suitable setting actuator for the flexible bend has been shown in EP 96 101 466 from 2.2.96. The full content of the latter application is integrated in the present application, so that a repetition of the corresponding description can be dispensed with.
    Basically, you can now proceed as follows:
  • 1) The beam 24 is aligned in such a way that a given part of the beam 24 below the envelope curve T (FIG. 5) is blocked by the receiver 26 under given operating conditions (drum speed or temperature and tooth height of the teeth 16). This (basic) state must be set up specifically, preferably by specially trained personnel.
  • 2) The actuator system 50 is then actuated such that the envelope curve G (FIG. 5) lies within a predetermined tolerance range with respect to the envelope curve T. This initial state also belongs to the basic state, which has to be brought about specifically, for example by means of the display 43 (FIG. 12) and a manual actuation of the controlled actuator system 50.
  • 3) The controller 49, 48 is now switched on, begins to compare the actual value of the carding distance KA with the specified target value and controls the motor M in order to eliminate any deviations. It is therefore irrelevant that the card is set to its basic state before commissioning; the subsequent changes in the working elements during start-up are compensated by the controller so that the specified carding distance is always maintained. However, it is important that the basic state takes into account the position of the teeth 16 when the operating state is reached.
  • 4) During normal operation (under stable working conditions) the positions of the teeth 16 or wires 13 change only insignificantly due to temperature changes. The tooth height or the wire height changes due to "wear", which includes the effect of grinding. The teeth 16 correspondingly recede with respect to the beam 24 and the wires 13 are shortened with respect to the stationary beam 24, the actuator 50 being always actuated by the controller 49, 48 in order to keep the carding distance KA as constant as possible at the desired value. The envelope curve T therefore always forms a “reference surface” and the actuator system 50 is controlled in order to adjust the revolving cover assembly in such a way that the carding distance KA is maintained with respect to the reference surface.
  • Die Regelung ist nicht auf die Anwendung der elektronischen Lehre nach Fig. 4 und auch nicht auf die Benutzung eines Messgerätes an einer einzigen Messstelle eingeschränkt, obwohl die Darstellungen einfachheitshalber nur eine solche Messstelle zeigen. Es können auch mehrere solche Messstellen, je mit dem eigenen Messgerät versehen, den Flexibelbogen 44,46 entlang verteilt werden, z.B. entsprechend der heute konventionellen Einstellpositionen, wo der Monteur die Blattlehre verwendet. Jedem Messgerät kann dann eine eigene geregelte Aktorik zugeordnet werden, so dass für jede solche Messstelle einen individuellen Kardierabstand vorgegeben und nachher automatisch eingehalten werden kann.The regulation is not based on the application of the electronic teaching according to FIGS. 4 and also not limited to the use of a measuring device at a single measuring point, although for the sake of simplicity, the representations are only one such measuring point demonstrate. Several such measuring points can also be used, each with its own measuring device are distributed along the flexible sheet 44, 46, e.g. according to the today conventional adjustment positions where the fitter uses the leaf gauge. Each measuring device can then be assigned its own controlled actuator system that an individual carding distance is specified for each such measuring point and can be followed automatically afterwards.

    Nach einer weiteren Variante kann das Messgerät aber von einem bewegbaren Halter getragen werden, der von einer Einstellposition zur nächsten, einem Flexibelbogen entlang bewegt werden kann, um an jeder solchen Position den Kardierabstand abzutasten. Ein Messgerät mit einer Kamera ist dafür gut geeignet. Im Prinzip könnte das Gerät sogar während seiner Bewegung dem Arbeitsbereich entlang dem Kardierabstand ohne Unterbrechung abtasten (Videokamera), um ein "kontinuierliches" Bild des Kardierabstandes von einem Ende des Arbeitsbereiches bis zum anderen abzubilden oder über einer "Strecke" des Arbeitsbereiches, die allenfalls vorbestimmt oder sogar ausgewählt werden könnte.According to a further variant, however, the measuring device can be moved Bracket can be carried from one setting position to the next, a flexible arch can be moved along to the carding distance at each such position scan. A measuring device with a camera is well suited for this. Basically the device could even move along the work area while moving Scan the carding distance without interruption (video camera) to create a "continuous" Image of the carding distance from one end of the work area to the other map or over a "route" of the work area, which may be predetermined or could even be selected.

    Letztere Variante wird in konventionellen Karden wegen der Struktur des Gestells wohl nicht möglich sein, kann aber bei Neukonstruktionen berücksichtigt werden. Die Abbildung des ganzen Arbeitsbereiches (oder zumindest einer wesentlichen Strecke davon) ist erstrebenswert, weil man dadurch Informationen über den "Gesamtzustand" des Arbeitsbereiches gewinnen kann. Wo nur an einzelnen Stellen abgebildet werden soll, muss eine Steuerung vorgesehen werden, um das Gerät an den vorbestimmten Stellen auszulösen. Das Messgerät könnte z.B. von einem Schwenkarm getragen werden, der um eine Achse schwenken kann, die mit der Tambourachse fluchtet. Das Messgerät könnte aber auch von einem Schlitten getragen werden, welcher auf einer Schiene dem Flexibelbogen entlang läuft. Es sollten womöglich auf beiden Seiten der Karde je ein Messgerät vorgesehen werden.The latter variant is used in conventional cards because of the structure of the frame may not be possible, but can be taken into account for new designs. The Mapping of the entire work area (or at least a significant distance of which) is desirable because it provides information about the "overall condition" of the work area can win. Where only shown in individual places a controller must be provided to operate the device at the predetermined Trigger positions. The measuring device could e.g. from a swivel arm be carried, which can pivot about an axis that with the drum axis flees. The measuring device could also be carried by a sled, which runs along the flexible arch on a rail. It should probably be on A measuring device can be provided on both sides of the card.

    Die Erfindung ist nicht auf die Anwendung in der Hauptkardierzone eingeschränkt. Eine ähnliche Anordnung kann dazu verwendet werden, den Abstand des Abnehmers 7 bzw. des Vorreissers 3 dem Tambour 4 gegenüber zu überwachen oder zu regeln. Noch einfacher ist die Verwendung der beschriebenen Mess-, Überwachungs- und Regelprizipien im Zusammenhang mit der Einhaltung der vorgegebenen Abstände der Tambourgarnitur von stationären Elementen, wie feste Kardierelemente in der Vor- bzw. Nachkardierzone, oder feste Leitsegmente in der Unterkardierzone oder Festdeckel einer Festdeckelkarde.The invention is not restricted to use in the main carding zone. A similar arrangement can be used to control the distance of the customer 7 or the licker-in 3 to monitor the drum 4 or to regulate. It is even easier to use the measurement, monitoring and and rule principles related to compliance with the prescribed Distances of the drum set from stationary elements, such as fixed carding elements in the pre- or post-carding zone, or fixed leading segments in the sub-carding zone or fixed lid of a fixed lid card.

    Der Begriff "Hüllkurve" in dieser Beschreibung umfasst die Annäherung in der Form einer geraden "Hüllinie", z.B. eine Tangente zur Hüllkurve.The term "envelope" in this description includes the approximation in form a straight "envelope line", e.g. a tangent to the envelope.

    Eine moderne Karde wird mit einer Mikroprozessor- bzw. Mikrocomputersteuerung ausgerüstet - Beispiele sind in EP-A-701 012 und DE-A-31 20 133 zu finden. Diese Steuerung ist in Fig.1 mit dem Bezugszeichen 12 angedeutet. Es sind in Fig.1 keine spezielle Verbindungen zwischen der Steuerung 12 und anderen Elemente der Maschine angedeutet, aber Beispiele solcher Verbindungen sind aus den erwähnten Vorveröffentlichungen zu entnehmen und weitere Verbindungen werden im Laufe der nachfolgenden Beschreibung erklärt. Es ist auch heute die konventionelle Praxis ein Eingabegerät (z.B. eine Tastatur) 21 vorzusehen, um Daten in den Speicher (nicht angedeutet) des Computers 12 eingeben zu können.A modern card is equipped with a microprocessor or microcomputer control equipped - examples can be found in EP-A-701 012 and DE-A-31 20 133. This Control is indicated in FIG. 1 by reference number 12. There are none in Fig.1 special connections between the controller 12 and other elements of the machine indicated, but examples of such compounds are from the aforementioned prior publications and further connections will be made in the course of following description explained. It is still conventional practice today Input device (e.g. a keyboard) 21 to provide data in the memory (not indicated) to be able to enter the computer 12.

    Es ist natürlich möglich eine Karde nach verschiedenen Systeme zu programmieren. Die gewählte Programmierung wird normalerweise vom Benutzer gewisse Eckdaten erfordern, um die Maschine steuern zu können, und diese Eckdaten werden meistens die eine oder andere Kombination aus Bandgewicht (ktex), Liefergeschwindigkeit (m/min) und Produktion (kg/h) umfassen. Anhand von solchen Eckdaten ist die Steuerung 12 in der Lage, Steuersignale für die verschiedenen Elemente zu erzeugen, um die vom Benutzer vorgegebenen Ergebnissen über die Betriebsdauer zu erreichen und die erzielten Ergebnissen zu überwachen. Dazu ist die Maschine mit Sensoren (in Fig. 1 nicht gezeigt) ausgerüstet, die Signale an die Steuerung liefern. Diese Tatsache ist in der Erfindung nach EP 96 101 466 ausgenutzt worden, wie die nachfolgende Beschreibung anhand der Figuren 14 bis 16 darlegt.It is of course possible to program a card according to different systems. The selected programming is usually given certain key data by the user required to be able to control the machine, and this key data is mostly one or the other combination of belt weight (ktex), delivery speed (m / min) and production (kg / h). The control is based on such key data 12 able to generate control signals for the various elements achieve the results specified by the user over the operating period and monitor the results achieved. The machine is equipped with sensors (in Fig. 1 not shown) equipped, which deliver signals to the control. That fact is in the invention according to EP 96 101 466 have been used, as the following description with reference to Figures 14 to 16.

    In Fig. 14 ist nun in einem Ausschnitt ein Flexibelbogen 30 einer solchen Karde dargestellt, mit darauf umlaufenden Wanderdeckeln 13, (nur zwei dargestellt) die von einem Zahnriemen langsam bewegt werden. An diesem Flexibelbogen 30 sind Stellelemente 32 vorgesehen, mit welchen der Kardierabstand eingestellt werden kann. Die Stellelemente 32 sind mittels einer Aktorik zum Beispiel kleiner Stellmotoren 34 automatisch verstellbar. Diese Aktorik ist mit der Steuerung 12 verbunden, welche die Einstellung des Flexibelbogens 30, und somit des Kardierabstandes bestimmt; zum Beispiel nach einer Einstellungscharakteristik nach Fig. 15.In Fig. 14, a flexible sheet 30 of such a card is now shown in a detail, with revolving covers 13 running around it (only two shown) that of one Timing belts are moved slowly. On this flexible sheet 30 there are control elements 32 provided with which the carding distance can be adjusted. The control elements 32 are automatic by means of actuators, for example, small servomotors 34 adjustable. This actuator system is connected to the controller 12, which is the setting of the flexible sheet 30, and thus the carding distance determined; for example after an adjustment characteristic according to FIG. 15.

    In Fig. 15 ist ein Diagramm dargestellt, das die Veränderung des Kardierabstandes KA auf der Abszisse in Abhängigkeit der kumulierten Kardenbandproduktion P in Tonnen (kg) auf der Ordinate für verschiedene verarbeitete Materialtypen anzeigt. Die Kurve S gibt den Sollabstand an, das heisst den Kardierabstand, welche ohne Abnutzung der Garnitur des Tambours (und der Wanderdeckel) gegeben wäre. In Abhängigkeit von der Kardierarbeit, die nötig ist, ein bestimmtes Material zu verarbeiten (beeinflusst z.B. durch die Verschmutzung, die Faserlänge und die Nissen des eingespeisten Fasermaterials) gibt es nun in Funktion der Produktion eine stärkere oder weniger starke Abnutzung, wie mit den Kurven a und b für die unterschiedlichen Fasermaterialien A und B verdeutlicht ist. Der Abnutzungsgrad in Abhängigkeit der laufenden Produktion für die verschiedenen Provenienzen des Fasermaterials (A oder B) ist entweder bekannt oder empirisch feststellbar, so dass diese Daten in die Steuerung 12 (Fig. 1) eingegeben werden können, und die Stellelemente 32 aufgrund dieser Angaben nachgestellt werden können. FIG. 15 shows a diagram which shows the change in the carding distance KA on the abscissa depending on the accumulated card sliver production P in tons (kg) on the ordinate for various processed material types. The curve S specifies the target distance, i.e. the carding distance, which does not wear the Set of the drum (and the traveling cover) would be given. In dependence of the carding work required to process a certain material (influences e.g. due to the pollution, the fiber length and the nits of the fiber material fed in) there is now more or less wear in function of production, as with curves a and b for the different fiber materials A and B. is made clear. The degree of wear depending on the current production for the different provenances of the fiber material (A or B) is either known or empirically detectable so that this data is entered into the controller 12 (FIG. 1) can be, and the adjusting elements 32 are adjusted based on this information can.

    Die Gesamtproduktion einer Karde von einem gegebenen Zeitpunkt (z.B. ab einem Garniturwechsel bzw. einem Garniturservice) wird durch die programmierbare Steuerung der Maschine ermittelt und auf Abfrage angezeigt, das heisst solche Daten sind normalerweise schon in der Maschinensteuerung vorhanden. Der "Nullpunkt" für die Berechnung dieser Gesamtproduktion ist natürlich auch als Nullpunkt für die Steuerung der Nachstellung des Kardierabstandes verwendbar. Eine Voraussetzung ist, dass die nachzustellenden Elemente am Nullpunkt in einem vorgegebenen Zustand sind, was durch das Bedienungspersonal gewährleistet werden muss. Sonst wird es notwendig, die "Ausgangslage" der Elemente mit einer geeigneten Sensorik zu überwachen und der Steuerung zu melden.The total production of a card from a given point in time (e.g. from one Set change or a set service) is through the programmable control determined by the machine and displayed on request, that is, such data normally already present in the machine control. The "zero point" for the Calculation of this total production is of course also a zero point for the control the adjustment of the carding distance can be used. A prerequisite is that the elements to be adjusted at the zero point in a given state are what must be guaranteed by the operating personnel. Otherwise it becomes necessary to monitor the "starting position" of the elements with suitable sensors and to report to the controller.

    Die Steuerung 12 kann vom Maschinenlieferant mit der Nachstellcharakteristik programmiert werden, das heisst die Charakteristik wird im Speicher der Steuerung eingetragen. Der Anwender kann dann die geeignete Charakteristik durch Eingabe des zu verarbeitenden Materials aufrufen.The controller 12 can be programmed by the machine supplier with the adjustment characteristic the characteristic is entered in the controller's memory. The user can then select the appropriate characteristic by entering the Call up processing material.

    Die Nachstellung erfolgt vorzugsweise nicht stetig, sondern intermittierend (schrittweise) in Abhängigkeit von den Fähigkeiten der Aktorik. Die Aktorik ist vorzugsweise in der Lage, zuverlässig eine Nachstellung auszuführen, die nur einen Bruchteil (z.B. maximal 10%) des normalen Kardierabstandes darstellt. Solche Abstände liegen heute im Bereich 20 bis 30 Hundertstelmillimeter. Vorzugsweise kann die Aktorik zuverlässig Nachstellschritte im Bereich 1 bis 3 Hundertstel ausführen.The adjustment is preferably not continuous, but intermittent (step by step) depending on the capabilities of the actuators. The actuator system is preferably in able to reliably perform an adjustment that is only a fraction (e.g. maximum 10%) of the normal carding distance. Such distances are in today Range 20 to 30 hundredths of a millimeter. The actuator system can preferably be reliable Carry out adjustment steps in the range 1 to 3 hundredths.

    Das System ist am besten geeignet für den Anwender, der über eine längere Periode einen gegebenen Materialtyp verarbeitet. Die Berechnung der "Gesamtproduktion" bei häufigen Materialwechseln wird sich als schwierig erweisen.The system is best suited for the user who is on a long period processed a given type of material. The calculation of "total production" at frequent material changes will prove difficult.

    Wenn der Materialtyp und die Lieferung über eine lange Periode unverändert bleiben und der Nutzeffekt voraussehbar ist, kann die Zeit statt die Produktion als Steuerparameter verwendet werden. Der Nutzeffekt bedeutet hier die effektive Produktionszeit in einer gegebenen Zeitperiode. If the material type and delivery remain unchanged over a long period and the efficiency is predictable, time can be used as a control parameter instead of production be used. The benefit here means the effective production time in a given period of time.

    Ein Doppel der Anordnung nach Fig. 14 muss spiegelbildlich auf der anderen Seite der Karde vorgesehen werden, um den entsprechenden Flexibelbogen einstellen zu können.A double of the arrangement according to FIG. 14 must be a mirror image on the other side of the Card is provided in order to be able to set the appropriate flexible sheet.

    Mittels der schon beschriebenen Ausführungen lässt sich der Kardierabstand während der laufenden Produktion auf besonders einfache und kostengünstige Art automatisch nachstellen; damit werden unnötige Stillstandszeiten vermieden. Die Neueinstellung oder Nachstellung des Kardierabstandes kann aber auch in Abhängigkeit vom Schleifen einer Garnitur, insbesondere vom automatischen Schleifen der Tambourgarnitur, vorgenommen werden. Damit werden die Betriebszeiten der Kardiermaschinen in einer Spinnerei wesentlich erhöht, ohne namhafte Qualitätseinbussen in Kauf nehmen zu müssen. Eine dazu geeignete Ausführung wird nachfolgend anhand der Fig. 16 beschrieben. By means of the designs already described, the carding distance can be during of ongoing production in a particularly simple and economical way readjust; this avoids unnecessary downtimes. The hiring or adjustment of the carding distance can also depend on the grinding a set, especially of the automatic grinding of the drum set, be made. This means that the operating times of the carding machines are in one Spinning increased significantly without accepting significant losses in quality have to. A suitable embodiment is described below with reference to FIG. 16.

    Insofern die Regelung nach Fig. 13 in der Lage ist, den Kardierabstand KA zuverlässig auf einem vorbestimmten Sollwert zu halten, ist es nicht nötig, die verschiedenen Grössen zu berücksichtigen, die in Zusammenhang mit Fig. 15 erklärt wurden. Das in der Fig. 13 schematisch abgebildete System ist aber vom Ausgangssignal des Sensors 26, bzw. von der Auswertung dieses Signales abhängig. Es können in der Elektronik selbst gewisse Plausibilitätstests eingebaut werden, um das Risiko einer Fehlfunktion zu vermindern, wobei aus Kostengründen die Redundanz kaum als Sicherheitsmassnahme in Frage kommt. Die Folgen einer Fehlfunktion sind trotzdem erheblich (allenfalls katastrophal), weil es sich normalerweise um die "Zustellung" der Spitzen 20 an die Spitzen 16 handelt - mit entsprechenden Risiken, die sich zwischen dem "einfachen Streifen" (Funken - allenfalls Feuer -, Garniturschäden, Qualitätsverlust wegen Faserverarbeitungsfehlern) und einer Kollision des Wanderdeckelaggregates mit dem Tambour streuen.Insofar as the control according to FIG. 13 is able to reliably determine the carding distance KA to keep at a predetermined set point, it is not necessary to keep the different sizes to be taken into account, which were explained in connection with FIG. 15. The The system shown schematically in FIG. 13 is from the output signal of the sensor 26, or depending on the evaluation of this signal. It can be in electronics Even certain plausibility tests can be installed to reduce the risk of malfunction to reduce, the redundancy hardly as a security measure for cost reasons it is a possibility. The consequences of a malfunction are nevertheless significant (at most catastrophic) because it is usually the "delivery" of the tips 20 is at the top 16 - with corresponding risks that lie between the "simple stripes" (sparks - possibly fire -, clothing damage, loss of quality due to Fiber processing errors) and a collision of the revolving cover assembly with sprinkle the drum.

    Claims (29)

    1. A textile machine, in particular a card, with a sensor to measure the effective working gap between a clothing and a mechanical component facing the clothing, characterized in that the spacing is sensed from the side of the working width.
    2. Machine according to claim 1, characterized by a sensing means which is effective from side to side across the entire working width.
    3. Machine according to claim 2, characterized in that the sensing means is applied in the form of a beam, e.g. in the form of a light ray, in particular a laser beam.
    4. Machine according to claim 3, characterized in that the beam is directed through the working zone in such a manner that it becomes partially dispersed by the components bordering the working gap.
    5. Machine according to claim 4, characterized in that the measurement of light still remaining in the beam after the dispersion is used as the measurement for the space to be measured.
    6. Machine according to claim 1, characterized in that a sensing means is provided in order to sense the conditions in the bordering zones of the working area.
    7. Machine according to claim 6, characterized in that the sensing means comprises a camera which, for instance, co-operates with an evaluation means which permits an image analysis.
    8. Machine according to claim 7, characterized in that the sensing means permits the formation of a diacaustic (envelope) curve at the clothing points.
    9. Machine according to claim 8, characterized in that the formation of an enveloping curve is made possible in that sequentially photographed images are laid one above the other in order to prepare a composite image which can be analysed, or in that the screen (aperture) of the camera is actuated slowly in relation to the rate of motion of the clothing elements.
    10. Machine according to one of the claims 7 to 9, characterized in that the image signals are digitalised and stored, for which the respective devices are provided in the evaluation means.
    11. Machine according to one of the preceding claims, characterized in that the sensing means can be moved along the carding gap.
    12. Machine according to claim 11, characterized in that the sensing means is laid out for the presentation of a section of the work gap.
    13. A sensing device to measure the working gap between a clothing and a mechanical component facing the clothing of a textile machine, characterized by:
      means for generating a beam, and
      means for attaching the beam generating means in such a manner on one side of the working zone that the beam can be directed through the working zone, so that the spacing is sensed from the side of the working width.
    14. Device according to claim 13, characterized in that the means of mounting are arranged in such a manner that the beam generating means can be moved along the working zone.
    15. Device according to claim 14, characterized in that the beam generating means can be used to display a section of the working zone.
    16. Device according to one of the claims 13 to 15, characterized in that means are provided for the reception of the beam in such a way that the receiver of the beam on the other side of the working zone can be attached opposite the generator (sender) of the beam.
    17. Device according to one of the claims 13 to 16, characterized in that the beam is a laser beam.
    18. A sensing device for the working gap of a clothing of a textile machine, characterized by means for generating an image of at least a part of the working zone as seen from the side.
    19. Device according to claim 18, characterized by means to analyse the image mentioned.
    20. Device according to claim 18 or 19, characterized in that the means for generating an image are arranged in such a manner that in the images derived an enveloping (diacaustic) curve can be formed on the clothing components in the working zone.
    21. Device according to claim 20, characterized in that the image, which is to be analysed, is prepared from a composition of sequentially derived single images (frames) of the working zone.
    22. A device to regulate the distance between a clothing (15) and a component (13) facing the clothing, whereby the position of the component (13) facing the clothing (15) can be changed if necessary by an actuating means (50) in order to compensate deviations from a desired value of the distance (KA), characterized in that the outer surface (T;T') of the clothing (15) serves as a reference surface, and the distance (KA) of the component (13) is being sensed contactlessly from said surface (T;T') from the side of the working width.
    23. Device according to claim 22, characterized in that the reference surface (T;T') is formed by sensing the clothing (15) from the side.
    24. Device according to claim 22 or 23, characterized in that the component (13) is also provided with a clothing (14).
    25. Device according to one of the claims 22 to 24, characterized in that the distance (KA) is sensed by optical means.
    26. Device according to one of the claims 22 to 25, characterized in that the clothing (15) is provided on the tambour (4) of a card.
    27. A method to regulate the distance between a clothing (15) and a component (13) facing the clothing, whereby the position of the component (13) facing the clothing (15) can be changed if necessary by an actuating means (50), in order to compensate deviations from a desired value of the distance (KA), characterized in that the outer surface (T;T') of the clothing (15) serves as a reference surface, and the distance (KA) of the component (13) is being sensed contactlessly from said surface (T:T') from the side of the working width.
    28. Method according to claim 27, characterized in that the reference surface (T;T') is formed by sensing the clothing (15) from the side.
    29. Method according to one of the claims 27 or 28, characterized in that the distance (KA) is sensed by optical means.
    EP97810179A 1996-04-12 1997-03-26 Sensor for the working distance of card clothings Expired - Lifetime EP0801158B1 (en)

    Priority Applications (2)

    Application Number Priority Date Filing Date Title
    EP01118063A EP1158078B1 (en) 1996-04-12 1997-03-26 Sensor for the working distance of card clothings or for adjustment of this distance
    US09/156,756 US6044910A (en) 1997-03-26 1998-09-17 Mixing device for fluids

    Applications Claiming Priority (6)

    Application Number Priority Date Filing Date Title
    CH93496 1996-04-12
    CH934/96 1996-04-12
    CH93596 1996-04-12
    CH93496 1996-04-12
    CH93596 1996-04-12
    CH935/96 1996-04-12

    Related Child Applications (1)

    Application Number Title Priority Date Filing Date
    EP01118063A Division EP1158078B1 (en) 1996-04-12 1997-03-26 Sensor for the working distance of card clothings or for adjustment of this distance

    Publications (2)

    Publication Number Publication Date
    EP0801158A1 EP0801158A1 (en) 1997-10-15
    EP0801158B1 true EP0801158B1 (en) 2003-05-28

    Family

    ID=25686155

    Family Applications (2)

    Application Number Title Priority Date Filing Date
    EP97810179A Expired - Lifetime EP0801158B1 (en) 1996-04-12 1997-03-26 Sensor for the working distance of card clothings
    EP01118063A Expired - Lifetime EP1158078B1 (en) 1996-04-12 1997-03-26 Sensor for the working distance of card clothings or for adjustment of this distance

    Family Applications After (1)

    Application Number Title Priority Date Filing Date
    EP01118063A Expired - Lifetime EP1158078B1 (en) 1996-04-12 1997-03-26 Sensor for the working distance of card clothings or for adjustment of this distance

    Country Status (3)

    Country Link
    US (1) US5930869A (en)
    EP (2) EP0801158B1 (en)
    DE (2) DE59711196D1 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101268220B (en) * 2005-09-22 2011-02-09 里特机械公司 Process for a grinding arrangement
    EP3431642A1 (en) 2017-07-20 2019-01-23 Trützschler GmbH & Co. KG Method for operating a preparation machine for spinning and device

    Families Citing this family (26)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0894878A3 (en) 1997-07-30 2000-04-19 Maschinenfabrik Rieter Ag Flock cleaner
    EP0916607B1 (en) * 1997-11-13 2002-10-02 Hitachi, Ltd. A paper sorting apparatus for sorting sheets of paper and articles
    DE19831139B4 (en) * 1998-07-11 2015-06-18 Trützschler GmbH & Co Kommanditgesellschaft Use of a device on a spinning preparation machine, in particular carding machine, cleaner or the like, with at least one carding segment
    DE19854194A1 (en) * 1998-11-24 2000-05-25 Graf & Co Ag Method of operating a card
    US6269522B1 (en) 1998-11-24 2001-08-07 Graf & Cie Ag Method of operating a card and a card flat for carrying out the method
    DE19923419A1 (en) * 1999-05-21 2000-11-23 Truetzschler Gmbh & Co Kg Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets
    DE19923420A1 (en) * 1999-05-21 2000-11-23 Truetzschler Gmbh & Co Kg Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on counter surfaces
    DE10053139B4 (en) 2000-10-26 2018-08-02 Trützschler GmbH & Co Kommanditgesellschaft Device on a spinning preparation machine, e.g. Carding machine, cleaner or the like, for setting distances on trimmings
    DE10053448A1 (en) * 2000-10-27 2002-05-08 Rieter Ag Maschf Device and method for adjusting the working gap between the tips of cover sets and the tips of the drum set of a card
    EP1215312A1 (en) * 2000-12-18 2002-06-19 Maschinenfabrik Rieter Ag Online measurement techniques
    DE10105855B4 (en) * 2001-02-09 2012-10-04 Trützschler GmbH & Co Kommanditgesellschaft Device on a card for textile fibers, z. B. cotton, chemical fibers u. Like., From provided with clothing cover rods
    DE10107282A1 (en) * 2001-02-16 2002-08-22 Truetzschler Gmbh & Co Kg Device on a card for recording light fiber waste such as short fibers, dust, fiber fragments, flight and the like.
    ITMI20020378A1 (en) * 2001-03-07 2003-08-26 Truetzschler & Co DEVICE ON A CARDER CLEANER OPENER OR SIMILAR FOR FIBERS FOR EXAMPLE COTTON SYNTHETIC FIBERS
    DE10126737A1 (en) * 2001-05-31 2002-12-05 Staedtler & Uhl Kg Set for a dissolving, sorting or combing device on textile machines
    DE10251574A1 (en) * 2002-11-06 2004-05-19 Trützschler GmbH & Co KG Device on a spinning preparation machine, e.g. Card, cleaner or the like, for measuring distances on cover sets
    DE10259475A1 (en) * 2002-12-19 2004-07-01 Trützschler GmbH & Co KG Device on a spinning preparation machine, in particular carding machine, cleaner or the like, with a machine cover
    DE102005038401B4 (en) 2005-08-12 2020-03-12 Trützschler GmbH & Co Kommanditgesellschaft Device on a spinning preparation machine, in particular a card, card or the like, with a roller, for. B. drum, which has a cylindrical, garnished outer surface
    DE102005050904B4 (en) 2005-10-21 2019-12-12 Trützschler GmbH & Co Kommanditgesellschaft Device on a spinning preparation machine, in particular carding, carding or the like, for monitoring
    DE102007011370B4 (en) * 2007-03-07 2018-06-14 H. Hergeth Gmbh Dynamic carding
    CH703251A1 (en) * 2010-06-02 2011-12-15 Rieter Ag Maschf Apparatus for setting a carding in a revolving flat.
    DE102014015480A1 (en) 2014-10-21 2016-04-21 TRüTZSCHLER GMBH & CO. KG Device on a spinning preparation machine, z. B. card, for measuring distances between the garnished flat bars of a revolving flat and the garnished drum
    CH711367A1 (en) * 2015-07-31 2017-01-31 Rieter Ag Maschf Storage of a flexible arch in a hiking blanket card.
    DE102018100752A1 (en) * 2018-01-15 2019-07-18 TRüTZSCHLER GMBH & CO. KG Carding element for a card or card and card or card
    DE102019110699A1 (en) * 2019-04-25 2020-10-29 Trützschler GmbH & Co Kommanditgesellschaft Card with a device for adjusting the carding gap
    CH716308A1 (en) * 2019-06-12 2020-12-15 Rieter Ag Maschf Method for operating a card and for setting a carding gap of the card and card.
    DE102019128620A1 (en) * 2019-10-23 2021-04-29 TRüTZSCHLER GMBH & CO. KG Spinning preparation machine

    Family Cites Families (15)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CH629544A5 (en) * 1978-04-25 1982-04-30 Rieter Ag Maschf METHOD FOR CONTROLLING THE WORKING CONDITIONS IN A PROCESSING MACHINE OF THE STACKED FIBER SPINNING AND DEVICE FOR IMPLEMENTING THE METHOD.
    CH627497A5 (en) * 1978-04-26 1982-01-15 Zellweger Uster Ag DEVICE FOR OBTAINING ONE OF THE REGULATORY SIGNALS RELATING TO THE DENSITY OF THE FIBER COATING ON THE TAMBOUR OF A CARD.
    DE3120133C2 (en) * 1981-05-20 1985-05-09 Trützschler GmbH & Co KG, 4050 Mönchengladbach Device for regulating and controlling a card or card
    JPH01239119A (en) * 1988-03-16 1989-09-25 Kurabo Ind Ltd Carding machine and flexible bend
    DE3913996A1 (en) * 1989-02-16 1990-08-23 Rieter Ag Maschf TEASEL
    EP0452676B1 (en) * 1990-03-22 1998-12-16 Maschinenfabrik Rieter Ag Identification cleaning field
    DE59108422D1 (en) * 1990-11-14 1997-01-30 Rieter Ag Maschf Method and device for controlling a card
    DE4115960C2 (en) * 1991-05-13 1996-05-02 Spinnbau Gmbh Method and device for adjusting the mutual distance between adjacent rolls of cards
    DE59304779D1 (en) * 1992-04-07 1997-01-30 Rieter Ag Maschf Controlled clothing grinding
    DE4235610C2 (en) * 1992-10-22 2002-07-18 Truetzschler Gmbh & Co Kg Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets
    EP0627508A1 (en) * 1993-06-04 1994-12-07 Maschinenfabrik Rieter Ag Diagnosis apparatus
    EP0763154A1 (en) * 1994-06-02 1997-03-19 Carding Specialists (Canada) Limited Setting device for a carding engine
    US5625924A (en) * 1994-07-29 1997-05-06 Maschinenfabrik Rieter Ag Method for producing a card sliver and carding machine therefor
    EP0701012B1 (en) * 1994-09-08 2002-03-27 Maschinenfabrik Rieter Ag Method and apparatus for the drive control of a cotton or woolen carding machine
    DE19514039B4 (en) * 1995-04-13 2006-01-19 Trützschler GmbH & Co KG Device on a spinning preparation machine, z. B. card, carding o.

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN101268220B (en) * 2005-09-22 2011-02-09 里特机械公司 Process for a grinding arrangement
    EP3431642A1 (en) 2017-07-20 2019-01-23 Trützschler GmbH & Co. KG Method for operating a preparation machine for spinning and device
    DE102017116382A1 (en) 2017-07-20 2019-01-24 TRüTZSCHLER GMBH & CO. KG Method for operating a spinning preparation machine and apparatus for this purpose

    Also Published As

    Publication number Publication date
    EP1158078A2 (en) 2001-11-28
    EP0801158A1 (en) 1997-10-15
    EP1158078A3 (en) 2002-01-16
    EP1158078B1 (en) 2004-01-07
    DE59710155D1 (en) 2003-07-03
    US5930869A (en) 1999-08-03
    DE59711196D1 (en) 2004-02-12

    Similar Documents

    Publication Publication Date Title
    EP0801158B1 (en) Sensor for the working distance of card clothings
    DE4235610C2 (en) Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets
    DE19822886B4 (en) Regulierstreckwerk for a fiber structure, z. As cotton, chemical fibers o. The like. With at least one default field
    CH627498A5 (en) METHOD AND DEVICE FOR REGULATING TAPE WEIGHT VARIATIONS ON CARD, CARD, AND STRETCHES.
    EP1454133A2 (en) Use of microwaves in the spinning industry
    EP1350870B1 (en) Device and metod for optimizing control values of a spinning mill machine
    EP0571570A1 (en) Combing machine
    EP0631136B1 (en) Apparatus for measuring the mass or cross-sectional density of fibre bands and use of the apparatus
    CH699383A2 (en) Device for or on a spinning preparation machine having a drafting system for drawing fiber strand-shaped material.
    EP1006225B2 (en) Method for evaluating the effect of yarn characteristics on the looks of textile surfaces
    CH694128A5 (en) Regulating drafting of a fiber structure, eg made of cotton or synthetic fibers, with at least one drafting zone.
    DE19651893A1 (en) Method and device on a card for processing textile fibers z. B. cotton, man-made fibers and. the like
    EP1781847B1 (en) Device and method for a carder
    EP2660375B1 (en) Method and device for adjusting the fibre orientation on roller cards
    DE102005019760B4 (en) Spinning machine with a drafting system for stretching a fiber structure and corresponding method
    EP0485881B1 (en) Method and device for controlling a card
    CH699382A2 (en) Device for or on a spinning preparation machine having a drafting system for drawing fiber strand-shaped material.
    CH692347A5 (en) Method and apparatus of a carder or carding for processing of textile fibers, such as cotton or man-made fibers.
    EP3530779B1 (en) Device and method for adjusting a distance between a drum and at least one adjacent work element in a spinning preparation machine
    DE4018803A1 (en) METHOD AND DEVICE FOR REGULATING AN OPENING PROCESS, EXAMPLE ON A CARD
    CH694054A5 (en) Device on a spinning preparation machine for measuring distances on opposite surfaces.
    CH693676A5 (en) Apparatus for measuring the thickness and / or the unevenness of slivers.
    EP0678601A2 (en) Controlled draw frame
    WO2004001110A1 (en) Method and device for evaluating sensor signals in textile machinery
    EP3959362A1 (en) Method and textile machine for automatically setting and maintaining a defined distance between a rotatably mounted cylinder and a further component

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): CH DE GB IT LI

    17P Request for examination filed

    Effective date: 19970811

    17Q First examination report despatched

    Effective date: 19990927

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Designated state(s): CH DE GB IT LI

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030528

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REF Corresponds to:

    Ref document number: 59710155

    Country of ref document: DE

    Date of ref document: 20030703

    Kind code of ref document: P

    GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

    Effective date: 20030528

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040331

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040331

    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    26N No opposition filed

    Effective date: 20040302

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20080321

    Year of fee payment: 12

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IT

    Payment date: 20080328

    Year of fee payment: 12

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20091001

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20090326