EP0801158B1 - Capteur pour la distance de travail de garnitures de cardage - Google Patents

Capteur pour la distance de travail de garnitures de cardage Download PDF

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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
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German (de)
English (en)
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EP0801158A1 (fr
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/fr
Publication of EP0801158A1 publication Critical patent/EP0801158A1/fr
Priority to US09/156,756 priority patent/US6044910A/en
Application granted granted Critical
Publication of EP0801158B1 publication Critical patent/EP0801158B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/28—Supporting arrangements for carding elements; Arrangements for adjusting relative positions of carding elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing 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
    • B01F23/2321—Mixing 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
    • B01F23/23211—Mixing 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing 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
    • B01F23/2376—Mixing 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
    • B01F23/23762—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4317—Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
    • B01F25/43172—Profiles, 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.

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

Claims (29)

  1. Une machine textile, particulièrement une carde, avec un détecteur pour la mesure de la distance effective de travail qui existe entre une garniture et un élément de machine disposé vis-à-vis de la garniture, caractérisée par le fait que la distance est détectée depuis le côté de la largeur de travail.
  2. Machine selon revendication 1, caractérisée par un moyen détecteur qui agit d'un côté à l'autre, sur toute la largeur de travail.
  3. Machine selon revendication 2, caractérisée par le fait que le moyen détecteur travaille à l'aide d'un rayon, par exemple, un rayon de lumière, particulièrement un rayon laser.
  4. Machine selon revendication 3, caractérisée par le fait que le rayon est dirigé de telle manière à travers la zone de travail qu'il est diffusé, en partie, par les éléments avoisinants la distance de travail.
  5. Machine selon revendication 4, caractérisée par le fait que la quantité de lumière restant encore dans le rayon, après la diffusion, est utilisée comme grandeur pour la distance à mesurer.
  6. Machine selon revendication 1, caractérisée par le fait qu'un moyen détecteur est prévu pour palper les conditions dans les zones marginales de la zone de travail.
  7. Machine selon revendication 6, caractérisée par le fait que le moyen détecteur comprend une caméra qui coopère, par exemple, avec une exploitation de données, laquelle rend possible une analyse d'image.
  8. Machine selon revendication 7, caractérisée par le fait que le moyen détecteur rend possible la formation d'une courbe enveloppante des pointes de garniture.
  9. Machine selon revendication 8, caractérisée par le fait que la formation d'une courbe enveloppante est rendue possible par le fait que des images, prises séquentiellement, sont superposées, afin d'établir une image composite devant être analysée, ou par le fait que l'obturateur de la caméra est actionné lentement, en comparaison avec la vitesse de mouvement des éléments de garniture.
  10. Machine selon l'une des revendications 7 à 9 , caractérisée par le fait que les signaux d'image sont digitalisés et emmagasinés, but pour lequel les dispositifs correspondants sont prévus dans l'exploitation de données.
  11. Machine selon l'une des revendications précédentes, caractérisée par le fait que le moyen détecteur peut être mis en mouvement le long de l'espace cardant.
  12. Machine selon revendication 11, caractérisée par le fait que le moyen détecteur est conçu pour imager un trajet de l'espace de travail.
  13. Un appareil de détection pour mesurer la distance de travail comprise entre une garniture et un élément de machine, situé vis-à-vis de la garniture, d'une machine textile, caractérisé par:
    des moyens pour produire un rayon, et
    des moyens pour fixer le producteur de rayon, sur un côté de la zone de travail, de telle sorte que le rayon peut être dirigé à travers la zone de travail, de telle manière que la distance est palpée depuis le côté de la largeur de travail.
  14. Appareil selon revendication 13, caractérisé par le fait que le moyen de fixation est conçu de telle manière que le producteur de rayon peut être mis en mouvement le long de la zone de travail.
  15. Appareil selon revendication 14, caractérisé par le fait que le producteur de rayon peut être utilisé pour imager un trajet de la zone de travail.
  16. Appareil selon l'une des revendications 13 à 15, caractérisé par le fait que des moyens sont prévus pour recevoir le rayon, et ceci de telle manière que le récepteur de rayon peut être disposé sur l'autre côté de la zone de travail, vis-à-vis du producteur de rayon.
  17. Appareil selon l'une des revendications 13 à 16, caractérisé par le fait que le rayon est un rayon laser.
  18. Un appareil détecteur utilisé pour détecter la distance de travail d'une garniture d'une machine textile, caractérisé par des moyens pour produire une image d'au moins une partie de la zone de travail, vue depuis le côté.
  19. Appareil selon revendication 18, caractérisé par des moyens pour analyser ladite image.
  20. Appareil selon revendication 18 ou revendication 19, caractérisé par le fait que le moyen utilisé pour réaliser une image est disposé de telle sorte que, sur des éléments de garniture dans la zone de travail, une courbe enveloppante peut être formée dans l'image obtenue.
  21. Appareil selon revendication 20, caractérisé par le fait que l'image devant être analysée, est réalisée comme image composite gagnée séquentiellement à partir d'images individuelles de la zone de travail.
  22. Un dispositif utilisé pour ajuster la distance comprise entre une garniture (15) et un élément (13) situé vis-à-vis de la garniture, et où, par rapport à la garniture (15), la position de l'élément (13) est changée, lorsque nécessaire, par un mécanisme d'actionnement (50), afin d'égaliser des écarts par rapport à une valeur de consigne, pour la distance (KA), caractérisé par le fait que la surface enveloppante (T; T') de la garniture (15) sert de surface de référence, et la distance (KA) de l'élément (13), par rapport à cette surface (T;T'), est palpée sans contact, depuis le côté de la largeur de travail.
  23. Dispositif selon revendication 22, caractérisé par le fait que la surface de référence (T;T') est formée par palpation de la garniture (15), depuis le côté.
  24. Dispositif revendication 22 ou revendication 23, caractérisé par le fait que l'élément (13) est également pourvu d'une garniture (14).
  25. Dispositif selon l'une des revendications 22 à 24, caractérisé par le fait que la distance (KA) est détectée par des moyens optiques.
  26. Dispositif selon l'une des revendications 22 à 25, caractérisé par le fait que la garniture (15) est prévue sur le tambour (4) d'une carde.
  27. Un procédé utilisé pour ajuster la distance comprise entre une garniture (15) et un élément (13) situé vis-à-vis de la garniture, et où, par rapport à la garniture (15), la position de l'élément (13) est changée, lorsque nécessaire, par un mécanisme d'actionnement (50), afin d'égaliser des écarts par rapport à une valeur de consigne, pour la distance (KA), caractérisé par le fait que la surface enveloppante (T; T') de la garniture (15) sert de surface de référence, et la distance (KA) de l'élément (13), par rapport à cette surface (T;T'), est palpée sans contact, depuis le côté de la largeur de travail.
  28. Procédé selon revendication 27, caractérisé par le fait que la surface de référence (T; T') est formée par palpation de la garniture (15), depuis le côté.
  29. Procédé selon l'une des revendications 27 ou 28, caractérisé par le fait que la distance (KA) est palpée par des moyens optiques.
EP97810179A 1996-04-12 1997-03-26 Capteur pour la distance de travail de garnitures de cardage Expired - Lifetime EP0801158B1 (fr)

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EP01118063A EP1158078B1 (fr) 1996-04-12 1997-03-26 Capteur pour la distance de travail de garnitures de cardage ou pour ajuster ladite distance
US09/156,756 US6044910A (en) 1997-03-26 1998-09-17 Mixing device for fluids

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

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EP3431642A1 (fr) 2017-07-20 2019-01-23 Trützschler GmbH & Co. KG Procédé de fonctionnement d'une machine de préparation à la filature ainsi que dispositif correspondant

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DE102005050904B4 (de) * 2005-10-21 2019-12-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, insbesondere Karde, Krempel o dgl., zur Überwachung
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EP3431642A1 (fr) 2017-07-20 2019-01-23 Trützschler GmbH & Co. KG Procédé de fonctionnement d'une machine de préparation à la filature ainsi que dispositif correspondant
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Publication number Publication date
EP1158078B1 (fr) 2004-01-07
DE59710155D1 (de) 2003-07-03
US5930869A (en) 1999-08-03
EP0801158A1 (fr) 1997-10-15
EP1158078A2 (fr) 2001-11-28
DE59711196D1 (de) 2004-02-12
EP1158078A3 (fr) 2002-01-16

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