EP0943707A2 - Procédé et appareil pour l'accumulation de matériau fibreux textile entre organes de travail de machines de filature - Google Patents

Procédé et appareil pour l'accumulation de matériau fibreux textile entre organes de travail de machines de filature Download PDF

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Publication number
EP0943707A2
EP0943707A2 EP99101261A EP99101261A EP0943707A2 EP 0943707 A2 EP0943707 A2 EP 0943707A2 EP 99101261 A EP99101261 A EP 99101261A EP 99101261 A EP99101261 A EP 99101261A EP 0943707 A2 EP0943707 A2 EP 0943707A2
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EP
European Patent Office
Prior art keywords
fiber material
motor
speed
working
drive means
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.)
Granted
Application number
EP99101261A
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German (de)
English (en)
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EP0943707A3 (fr
EP0943707B1 (fr
Inventor
Johann-Christian Dr. Promoli
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
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Rieter Ingolstadt Spinnereimaschinenbau AG
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Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
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Publication of EP0943707A3 publication Critical patent/EP0943707A3/fr
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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
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/06—Arrangements in which a machine or apparatus is regulated in response to changes in the volume or weight of fibres fed, e.g. piano motions
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft

Definitions

  • the invention relates to a method for storing a textile fiber material between work organs of spinning machines, wherein a drive means drives a work organ that delivers the fiber material into a memory and another drive means drives another work organ that removes the fiber material from the store, one of the work organs is a highly dynamic work organ, the other is a low dynamic work organ. Also affected is a device for storing a textile fiber material between work organs of spinning machines, wherein a drive means drives a work organ which delivers the fiber material into a storage and another drive means drives another work organ which removes the fiber material from the store, signaling devices for the determination the amount of fiber material are arranged and the signal transmitters are connected to a control for a drive means.
  • a drafting system with belt weight regulation is preferably well known from lines. A constant and a highly dynamic drive work together here. However, if such a drafting device with belt weight regulation is to be used in a card or combing machine, an additional low-dynamic drive is required.
  • the drafting system with belt weight regulation as a highly dynamic drive area between work organs Card or combing machine and a tape storage can be arranged by where at least one has a low dynamic drive range.
  • a storage means for moving, ie transported, fiber material is necessary.
  • the storage medium must compensate for the temporary differences in the delivery of the fiber material or differences in the processing speed of the work organs. No distortion or breakage of the fiber material may occur during storage.
  • This statement is also valid if a card or combing machine is operated in a network with a regulating section. However, this statement generally applies to spinning machines that technologically couple a highly dynamic drive area with a low dynamic drive area or vice versa when processing fiber material.
  • FIG. 7A describes the use of a store between a drafting system and a can press.
  • a pair of rollers as the working element of the drafting system delivers sliver into the store, the sliver is removed by means of a guide roller as the working element of a can press.
  • the drive of the drafting system is independent of the drive of the can press.
  • Signal transmitters light barriers
  • They monitor a limit value of the filling quantity (memory content), the exceeding or falling below of which triggers a signal. Intermediate values of the amount of sliver are not determined.
  • the memory described in the prior art must have a relatively large spatial extent.
  • the installation of the memory within a card or combing machine or in the combination of card or combing machine to form a regulating section there is a relatively large space requirement for such a memory. That is very disadvantageous.
  • a further embodiment of the invention shows how the amount of fiber material supplied to the store and the amount of fiber material removed can be determined.
  • the amount of fiber material supplied is determined by counting signals from a signal generator which is connected to a shaft of a drive means which drives the working element which supplies the fiber material.
  • a working element can be, for example, the pair of delivery rollers of a drafting device R1 (according to FIG. 1) or a pair of take-off rollers A2 (according to FIG. 1a).
  • the amount of fiber material removed is determined by counting signals from another signal generator, which is connected to a shaft of a drive means which drives the working organ that removes the fiber material.
  • a working element can be, for example, an input roller pair of the belt storage unit B1 (according to FIG. 1) or a feed roller pair of the drafting device R2 (according to FIG. 1a). These signals are transmitted to an electronic counter.
  • the counter counts the incoming signals, whereby the two counter inputs work with opposite signs and a difference is determined as the counter reading.
  • the counter influences the motor control or regulation, so that the speed of the motor is adjusted for the drive means of the low-dynamic working organ.
  • the procedure can be such that a signal for adjusting the engine speed is generated when the counter reading reaches a predetermined limit in the counter. It is also possible to set up a number of defined limit values which the counter reading may exceed or fall short of, so that signals for adjusting the speed of the motor are formed which trigger the adjustment of the speed at a different adjustment speed.
  • the operation of the counter can be designed such that a difference is formed from at least two counter readings, which are determined from (with a time interval) successive measured values, and this difference is compared with a limit value and, if this limit value is exceeded, an adjustment of the engine speed follows.
  • the device is used to carry out the method, wherein a signal transmitter for determining the amount of fiber material supplied before entry into the storage means and another signal transmitter for determining the amount of fiber material removed after the storage device is disposed, and both signal transmitters are connected to a counter and the output of the counter is connected to a control or regulation for a motor of the drive means which drives the low-dynamic working element.
  • the signal transmitter can be a digital absolute encoder or an incremental encoder.
  • FIG. 1 shows, for example, in a carding machine K1, independent drive areas N, H, K.
  • the card itself is assigned other working elements such as drafting system, storage device or tape storage.
  • Such a drive area N, H, K comprises the drive means, the force transmission means and the relevant working element, which acts on the fiber material.
  • the term "fiber material” encompasses textile nonwoven and fiber sliver.
  • a group of working elements can also be driven by the drive means. There is no difference in the function of the invention. To simplify matters, we will only speak of the work organ in the following, although this term also encompasses a group of work organs.
  • the drive area K there has the group of the working elements supply and consumer A1, as well as the input rollers of the following drafting unit R1.
  • the drive area K can be, for example, a drive area, the working elements of which work at an essentially constant speed or constant processing speed.
  • the customer as a working element on the card can, for example, convey fiber material at a constant delivery speed. In this case, a dynamic change in delivery speed is not typical.
  • Another drive area H follows. It is the second (possibly further following) of two roller pairs of the drafting device. This drafting unit R1 is equipped with a belt weight regulation.
  • the drive area H is a highly dynamic drive area. If, for example, the highly dynamic drive area H supplies fiber material with a rapidly changing delivery speed, this would be problematic for a subsequent drive area N with low dynamic drive behavior.
  • a storage means ie a storage S1 for fiber material, between the highly dynamic drive area H and the subsequent, low dynamic drive area N, which corresponds to a tape storage B1, in order to give the drive area N time to adjust to the changed delivery speed of the drafting device R1 .
  • the memory S1 is therefore necessary to compensate for the temporary differences in the delivery of the fiber material or in the processing speed of the different work organs or groups of work organs.
  • the feed element of the store S1 is connected to the delivery roller of the drafting unit R1, the removal member of the store S1 is connected to the belt storage device B1.
  • the drive area N with the feed, the pickup A2 and the feed member of the memory S2 forms a low-dynamic drive area.
  • the drive area H with an input roller pair (one or more) of the drafting unit R2 and its belt weight regulation is a highly dynamic drive area.
  • This drafting device R2 has an (essentially) constant delivery speed on the pair of output rollers (also known as the pair of delivery rollers).
  • the drive area K with the pair of output rollers of the drafting unit R2 and belt storage B2 is a drive area operating at a constant delivery speed.
  • a memory S2 must be inserted between the low-dynamic drive area N and the high-dynamic drive area H.
  • FIG. 2 shows the possibility of a technological coupling between a highly dynamic drive area H, which is formed with the feed rollers of a drafting device R3, and a drive area K, which has an essentially constant processing speed of the fiber material.
  • the drive area K there is formed, for example, by the customer A3 from the card.
  • the drive area N is low dynamic and is formed by the pair of delivery rollers of the drafting device R3 and the belt storage device B3. If the drafting device R3 is operated with a rapidly changing feed speed (of the input rollers), the store S3 must be arranged between the drive area K and drive area H according to FIG. It can be assumed that the highly dynamic drive range should not be influenced by additional speed changes due to the storage mode.
  • the invention is not limited to the card or the combing machine, but also includes the bond between the card or combing machine and a regulating section or basically the combination of spinning machines, process the fiber material.
  • the fiber material is stored in the memory of the examples mentioned in order to compensate for temporary differences in the delivery of the fiber material or differences in the processing speed of the working organs.
  • the fiber material is only stored in the meantime since the delivered fiber material is constantly removed.
  • the content of the memory can be determined as a quantity which is measured with the unit of measurement of the mass (for example in kg) or with the unit of measurement for the length (for example in cm). It is common for the fiber material to be stored in the memory in the form of tape layers or loops or as a loop.
  • the memory is formed by a container that receives the loop, so that no damage or warping of the fiber material is possible.
  • the shape of the sand shelf plays no role in the present invention. It can be applied to all types of tape storage.
  • the operation of the store is influenced by the working organ which delivers the fiber material into the store and is also influenced by the working organ which takes the fiber material from the store.
  • FIG. 3 shows a memory S between a low-dynamic drive area AB1 and a high-dynamic drive area AB2.
  • the storage means also called storage S, is constructed so that it stores the fiber material FM in the form of a loop.
  • the direction of transport of the fiber material is shown by the arrows.
  • the low-dynamic drive area AB1 comprises, as working element AO1, a pair of rollers between which the fiber material is conveyed.
  • the lower roller of the pair of rollers is mechanically connected to the shaft of a motor M1 via force transmission means.
  • the shaft of the motor M1 is coupled to a signal generator T1.
  • the signals from the signal generator T1 are a measure of the rotation angle of the shaft.
  • the z. B. covered angle of rotation of the motor shaft is a measure of quantity units (ie length units or mass units) transported fiber material FM.
  • a comparatively low dynamic drive means can be selected for the low dynamic drive range AB1.
  • the motor M1 can be an asynchronous motor with a frequency converter.
  • the frequency converter corresponds to the motor control MS1.
  • Motor M1 and motor control MS1 form a drive means.
  • the reference variable FG1 for the motor control MS1 can be set there itself or specified by a higher-level control.
  • the signal generator T1 would have to be additionally arranged in order to enable the incoming sliver to be counted.
  • an engine control could also be used in exchange of the engine control, in which case the signal generator T1 would already belong to the engine control.
  • the working organ AO1 can, for example, be the customer of a card. From there, the fiber material FM is conveyed into the memory S. The fiber material is stored there in the form of a loop. It is noteworthy that the memory S does not have to have signal generators, as is customary in the prior art. This results in significant cost savings. However, it is conceivable to attach signal transmitters with a limit switch function in order to additionally increase the functional reliability. Fiber material is removed from the memory S by a working element AO2.
  • the working element AO2 is a pair of rollers of a highly dynamic drive area AB2. This corresponds, for example, to a pair of feed rollers of a drafting system with belt weight regulation.
  • the pair of feed rollers generally belongs to a group of working elements which are driven by a drive means.
  • the pair of feed rollers is only shown as the working element AO2.
  • a single pair of rollers is driven by a single drive.
  • the fiber material FM is conveyed away from the store S between the rollers of the working element AO2.
  • the lower roller of the pair of rollers there is driven by a drive means which has a motor M2.
  • the motor M2 can advantageously be a servomotor.
  • This has a control loop consisting of a signal transmitter T2 and a motor controller MR2.
  • the signal generator T2 is located on the shaft of the motor M2.
  • the signal transmitter can be a rotation angle or speed transmitter.
  • An absolute encoder would have the advantage that a signal for the position of the shaft can be evaluated even at a standstill. Taking into account the mechanical power transmission means to the work organ AO2 and the geometric conditions of the work organ AO2, the angles of rotation traveled by the motor shaft are also a measure of the quantities (length or mass) of fiber material transported.
  • the signals supplied by the signal generator T2 are supplied to a motor control MR2.
  • a command variable FG2 is specified for the motor control circuit MR2. This can be done by the motor control circuit MR2 itself or can be specified by a higher-level control (for example machine control).
  • the signal generator T2 has a branch at the output, so that it also transmits the signals transmitted to the motor control MR2 to an electronic counter Z.
  • the electronic counter Z thus receives both the signals from the signal generator T1 and the signals from the signal generator T2. It is advantageous to use the signal transmitters already present with the drive motors.
  • fiber material from the memory can also be arranged, which, for example, directly measures the amount of fiber material enable.
  • the measure of the quantity of fiber material transported is FM the counter Z the amount of fiber material supplied and the amount of at the same time removed fiber material counted continuously. This will constantly the difference between the quantity delivered and the quantity of fiber material removed determined. Based on an initial (basic) quantity, the memory content. Depending on this, the speed of the drive means for the low-dynamic working element AO1. The Speed for the highly dynamic work organ AO2 is through the invention not adjusted.
  • the amount of fiber material supplied is determined by counting signals from the signal generator T1, which is connected to the shaft of a motor M1.
  • This motor M1 drives the working element AO1, which delivers the fiber material FM into the memory S.
  • the sliver is taken over by a highly dynamic drive area AB2.
  • a motor with motor control could also be used.
  • the signal generator T2 supplies the signals to a motor controller MR2.
  • the motor controller MR2 regulates the operating behavior of the servomotor M2.
  • the amount of fiber material delivered is continuously counted.
  • the signal generator T1 supplies its signals to a counter Z.
  • the counter Z receives signals from the signal generator T2, which it also counts with the opposite sign. With the counter Z, the amount of fiber material supplied and simultaneously removed is counted continuously.
  • the counter reading represents the memory content and, depending on a positive or negative difference compared to a basic quantity taken as the target value, the speed of the drive means for the low-dynamic working element AO1 is adjusted.
  • a positive or negative difference represents, for example, an increase or decrease in a set basic quantity.
  • the counter reading can represent a defined limit value, so that a signal for adjusting the speed of the motor M1 is formed.
  • the fiber material must have a so-called basic quantity in the storage S.
  • the basic quantity must at least be available in order to give the drive regions the time required for adjustment of the speeds in the event of a behavior of the drive regions which temporarily leads to a reduction in the storage quantity.
  • the counter reading shows the difference between the stored quantity of fiber material compared to a basic quantity or nominal value.
  • the basic quantity in the memory is equated to a counter reading of zero, which has the advantage that the size and direction of a quantity deviation from a desired quantity of memory (basic quantity) can be continuously recognized.
  • the speed differences between feed succeeds and to keep tape removal small in amount or in time. This minimizes the amount of fiber material to be stored reached. In this way it becomes possible for the memory S to be spatially small to keep.
  • a plurality of limit values can be defined for the counter reading, the excess or undershoot of which are used to form a signal for adjusting the speed of the motor M1. Different adjustment speeds are assigned to the limit values.
  • This has the advantage that a reaction of the motor M1 which is adapted to the size of the quantity deviation is possible. This is not known in the prior art for storage. This possibility is illustrated by FIG. 4.
  • the meter reading is plotted over time t in the diagram there.
  • the ZS meter reading has 4 limit values, the limit values G1 and G3 in the positive range (increase in quantity) and the limit values G2 and G4 in the negative range (decrease in quantity).
  • the procedure can be designed so that when the limit values G1 or G2 are reached the adjustment speed for changing the speed is low, while when the limit values G3 or G4 are reached the adjustment speed for changing the speed of the motor M1 is high.
  • the different adjustment speeds can be realized using the MS1 motor control.
  • the required memory content can be minimized by clever selection and continuous optimization of the limit values and adjustment speeds.
  • Another possible embodiment for adjusting the motor M1 is in that a difference in the meter readings between two measuring points is determined becomes. This corresponds to the determination of a filling speed of the Memory. Exceeds the difference or the gradient of the storage filling a certain amount, the engine speed is adjusted M1 in addition to the evaluation of the limit values already mentioned.
  • This The gradient formation procedure can be programmed in the Motor control MS1 can be realized. It is with gradient formation possible to make rapid, large volume changes in a timely manner react.
  • signals which allow statements about changes in the supplied mass can be used to predict the reaction of the highly dynamic drive.
  • a predictive adjustment of the motor M1 can be derived from this.
  • the low dynamic drive range can follow the highly dynamic drive range as closely as possible.
  • FIG. 5 uses an exemplary embodiment to explain the case where a memory is arranged between a drive area with an essentially constant processing speed and a highly dynamic drive area.
  • the drive area with an essentially constant processing speed can be formed, for example, by the customer on the card itself. This customer delivers fiber material at a constant processing speed.
  • the highly dynamic drive area is formed by the pair of feed rollers of a drafting system with belt weight regulation. In such a case, the peculiarity is that the speed of the pickup on the card should not be influenced, on the other hand, the high dynamics of the pair of feed rollers of the drafting system should also not be adversely affected.
  • the delivery speed is realized by the delivery roller pair of the drafting system.
  • the delivery speed of the pair of delivery rollers is realized by means of the drive motor for the pair of delivery rollers.
  • Such a drafting device is known in its mechanical structure, for example from a RSB 951 drawframe from RIETER Ingolstadt Spinnereimaschinenbau AG.
  • the memory S lies between a drive area K with an essentially constant processing speed and a highly dynamic drive area K.
  • the drive area H is formed, for example, by the drive area AB10, which represents the pair of rollers of a customer as the working element AO10.
  • the work organ AO10 is driven by a motor M10 with, for example, a motor control MS10, which is given the command variable FG10 for controlling the motor.
  • the drive area AB20 is formed by a working element AO20, which corresponds to a pair of feed rollers of the drafting system with belt weight regulation.
  • the work organ AO20 is driven, for example, by a servo motor M20, which has a signal generator T20 and a motor control MR20 (servo amplifier).
  • the command variable FG20 for the motor control is specified.
  • the delivery roller pair of the drafting unit forms the work organ AO30. This working organ is responsible for the delivery speed of the FM fiber material.
  • the work organ AO30 belongs to the drive area AB30, which belongs to a low-dynamic drive area N.
  • the AO30 working element is driven by an M30 motor, which realizes the basic speed and thus the delivery speed of the drafting unit.
  • This motor M30 is controlled by a motor control MS30, which is guided by a reference variable FG30.
  • the M30 motor is also called the main motor because it provides the basic speed due to the mechanical coupling on the drafting system.
  • the motor M20 represents a regulating motor that is mechanically coupled to a PG planetary gear. This makes the delay adjustable. Such a mechanical coupling on the drafting system is not absolutely necessary.
  • the function of the invention would also be guaranteed if the drives were electrical individual drives.
  • the signals determined by the signal transmitters T10 and T20 are processed in the counter Z in the manner already described and the result of the counter Z is fed as a signal to the engine control MS30 in order to influence the speed of the working element AO30. It changes the delivery speed depending on the amount of storage. By changing the delivery speed in the drafting system, indirect influence is exerted on the storage volume. This corresponds to a change in speed in the low dynamic range. In the event that a tape deposit belongs to the low-dynamic drive area N, this would have to be influenced synchronously.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP99101261A 1998-03-17 1999-01-23 Procédé et appareil pour l'accumulation de matériau fibreux textile entre organes de travail de machines de filature Expired - Lifetime EP0943707B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19811497 1998-03-17
DE19811497A DE19811497A1 (de) 1998-03-17 1998-03-17 Verfahren und Vorrichtung zum Speichern eines textilen Fasermaterials zwischen Arbeitsorganen von Spinnereimaschinen

Publications (3)

Publication Number Publication Date
EP0943707A2 true EP0943707A2 (fr) 1999-09-22
EP0943707A3 EP0943707A3 (fr) 2000-10-18
EP0943707B1 EP0943707B1 (fr) 2005-09-21

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EP99101261A Expired - Lifetime EP0943707B1 (fr) 1998-03-17 1999-01-23 Procédé et appareil pour l'accumulation de matériau fibreux textile entre organes de travail de machines de filature

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US (1) US6273314B1 (fr)
EP (1) EP0943707B1 (fr)
DE (1) DE19811497A1 (fr)

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US6499639B2 (en) * 2001-02-12 2002-12-31 Heidelberger Druckmaschinen Ag Method and apparatus for dynamically controlling a web printing press
DE10116944A1 (de) * 2001-04-05 2002-10-10 Truetzschler Gmbh & Co Kg Vorrichtung an einer Karde zum Füllen einer Kanne mit länglichem Querschnitt
DE10252181B3 (de) * 2002-11-09 2004-10-07 Rosink Gmbh + Co. Kg Maschinenfabrik Fasertransport und -ablegevorrichtung zum Anschluß an eine Karde
WO2014037503A1 (fr) 2012-09-06 2014-03-13 Hi Tech Textile Holding Gmbh Dispositif de compensation des variations de vitesses de transport d'un non-tissé

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Publication number Priority date Publication date Assignee Title
JP2001234436A (ja) * 2000-02-03 2001-08-31 Truetzschler Gmbh & Co Kg 紡績機械、特に練条機、たとえば調整型練条機へスライバを供給する装置
WO2007015875A2 (fr) * 2005-07-27 2007-02-08 The Steelastic Company, Llc Machine a ceintures de pneumatique
WO2007015875A3 (fr) * 2005-07-27 2007-04-05 Steelastic Company Llc Machine a ceintures de pneumatique
US7497241B2 (en) 2005-07-27 2009-03-03 The Steelastic Company, Llc Tire belt machine

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EP0943707A3 (fr) 2000-10-18
US6273314B1 (en) 2001-08-14
EP0943707B1 (fr) 2005-09-21
DE19811497A1 (de) 1999-09-23

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