EP0558719A1 - Entrainement pour peigneuse. - Google Patents

Entrainement pour peigneuse.

Info

Publication number
EP0558719A1
EP0558719A1 EP92919324A EP92919324A EP0558719A1 EP 0558719 A1 EP0558719 A1 EP 0558719A1 EP 92919324 A EP92919324 A EP 92919324A EP 92919324 A EP92919324 A EP 92919324A EP 0558719 A1 EP0558719 A1 EP 0558719A1
Authority
EP
European Patent Office
Prior art keywords
winding
drive
winding rollers
speed
combing
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
EP92919324A
Other languages
German (de)
English (en)
Other versions
EP0558719B1 (fr
Inventor
Heinz Clement
Hansulrich Eichenberger
Oliver Wuest
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
Publication of EP0558719A1 publication Critical patent/EP0558719A1/fr
Application granted granted Critical
Publication of EP0558719B1 publication Critical patent/EP0558719B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G19/00—Combing machines
    • D01G19/06—Details
    • D01G19/08—Feeding apparatus

Definitions

  • the invention relates to a method for feeding a cotton roll that can be rolled off a cotton roll to a combing unit of a combing machine according to the preamble of patent claim 1.
  • the cotton to be combed is presented to the combing unit in the form of a wadding roll.
  • the cotton roll is supported on two winding rollers, at least one of which is driven, during the unrolling of the cotton wool.
  • the cotton is removed from the wrap in front of the front winding roller: the cotton unwound in this way arrives at the clamping area of a pair of pliers via a feed cylinder and is combed out at its front end, which projects beyond the pliers, when the pliers are closed by means of a round comb arranged underneath the pliers.
  • the pliers are opened again and the combed-out fiber beard is transferred to a subsequent pair of tear-off cylinders.
  • a fixed comb stuck into the fiber beard to be removed can have an additional combing effect.
  • the pliers move back and forth.
  • the driven winding roll is separated from the drive by a coupling, so that both winding rolls can be freely rotated.
  • a previously described embodiment of a combing machine is also known from the previously published EP-OS 360064, the front winding roller being driven by a separate drive motor which is controlled by a control device.
  • This control device has the task of synchronizing the controls of the separate drive motor for the feed cylinder, the drive for the winding roller and the drive for the pliers, the round comb and the tear-off cylinder.
  • the cotton roll lies freely on the two winding rollers with its full weight (20-25 kg). This creates an indentation in the area of this support with respect to its outer diameter due to the elastic flexibility of the winding. After passing the support point, the winding expands again to its original diameter minus the thickness of a wad of cotton wool. With a decreasing winding diameter and thus a decreasing weight, this indentation depth is reduced.
  • the winding rollers are toothed.
  • the peripheral speed of the winding is greater on its outside diameter than the peripheral speed in the area of the smallest distance between the central axis of the winding and the contact surface of the winding roller. It follows from this that the more the diameter and thus the weight of the winding decreases, the smaller the depth of indentation and thus also the penetration of the cotton into the toothing and the difference between the peripheral speed in the area of its outer diameter and the peripheral speed in the area of the lowest Distance between the center axis of the winding and the contact surface of the winding roller. On the basis of these different speed ratios, a different delivery speed of the cotton can arise depending on the diameter or weight of the cotton roll.
  • the changed dynamic interaction between the intermittent drive of the feed roller and the constant drive of the winder roller also has an influence on a changed delivery speed via the unwinding process of a wadding roll, even with decreasing winding weight. Due to the influences mentioned, the tensioning of the cotton between the winding roller and the feed cylinder changes during the unwinding process. As studies have shown, the result of this is that at the start of the unwinding process, a thicker cotton wool is combed out to the combing unit than when the cotton wool roll runs out.
  • drift This deviation is generally referred to as drift and, depending on the structure of the wadding roll, material and other parameters, can be up to 5%.
  • a separate drive for the winding rollers which is controlled by a control device, is also shown in an earlier application by the applicant with the number CH-140/90 from January 17, 1990.
  • the control of the separate drive for the winding rollers is necessary for the application process of a new cotton wool in the combing tongs.
  • a continuous adaptation of the winding roller drive during the unwinding process is not provided.
  • the combing machines are generally provided with eight combing heads, to each of which a wad of cotton is presented for combing out.
  • the combed cotton is then combined into a sliver.
  • the fiber slivers stretched in this drafting system are combined to form a single fiber sliver, which is then usually placed in a can.
  • the resulting drift of up to 5% described above during the unwinding process of the roll can be measured with this belt monitoring with a time delay.
  • the solution is that the speed of the driven winding rollers or even just one winding roller is changed within a rolling interval of a cotton roll.
  • roll-off interval refers to the time period between the fitting of a new and full roll and the running out of the cotton wool from a sleeve of the roll.
  • the invention is not limited to the fact that both winding rollers are connected to the drive, but also to the drive of only one winding roller, the other winding roller being dragged along over the cotton winding by friction.
  • the winding rollers be driven by an independent drive which can be controlled or regulated independently of the drive of the combing device.
  • combing units are essentially to be understood as the tongs with feed cylinder and fixed comb, the round comb and the tear-off cylinder.
  • the proposed independent controllability ensures an adaptation of the speed increase of the winding rollers during a rolling interval for different winding templates. This also makes it easy to make corrections to the speed changes.
  • the total length of the wound cotton is generally known from the process of winding formation upstream of the combing machine. Based on the required feeding speed of the cotton to the combing units, a conclusion can be drawn as to the time interval in which the cotton is unwound again from the sleeve.
  • the proposed method for adjusting the speed during the unwinding interval is advantageously to be used when a block change of the windings is carried out on the combing machine. This means that all windings on all eight combing heads are changed at the same time. This ensures that the reduction in diameter when the coils run off is the same on all combing heads.
  • wild change means that the wadding is changed individually according to the expiry.
  • Fig. 1 shows a schematic side view of a combing head with a control device for the winding rollers.
  • FIG. 2 shows an enlarged partial view according to FIG. 1.
  • FIG. 3 shows a reduced view according to FIG. 1 with a schematically illustrated drafting system and a belt deposit.
  • Fig. 4 shows a diagram for a possible speed adjustment per rolling interval of a roll.
  • FIG. 5 shows a schematic partial view of a comb head according to FIG. 1 with a possible measuring device for the cotton wool.
  • FIG. 1 shows a combing head 1 in a schematic side view of a combing machine.
  • Eight such combing heads 1 are usually installed on a combing machine.
  • the exemplary embodiment is shown and described on only one combing head, the drive units listed here being used together for all combing heads. This is particularly necessary for combing machines in which a previously described block change takes place.
  • the drive shafts thus extend over the entire width of the combing heads, the drive from one side of the combing heads done centrally.
  • the combing head 1 shown is provided with a receptacle 2 for a cotton roll 3.
  • the cotton roll. 3, which is referred to in the further description only as "roll”, lies freely on winding rolls 4 and 5, which are rotatably mounted in a frame 6.
  • the front winding roller 4 is connected to a motor 8 via a drive train 7.
  • the motor 8 could also be arranged in direct alignment with the winding roller.
  • the motor 8 for example an electric motor, is controlled by a control unit 9.
  • the cotton web 10 unwound from the winding 3 reaches a deflection roller 11 on which a spring-loaded feeler roller 12 is seated.
  • An incremental encoder 13 is attached to the side for speed detection of the roller 12.
  • the signal from this speed sensor is transmitted via a path 14 to a controller 15, from which, after these signals have been converted, corresponding control pulses are sent to the control unit 9.
  • the cotton wool web 10 goes down to a combing unit 16.
  • This combing unit 16 is formed by pliers 17 in which a feed roller 18 is rotatably mounted. This feed roller 18 is generally rotated by a relative movement between the upper and lower pliers of the pliers 17 via a ratchet drive (not shown).
  • the pliers 17 are pivotably mounted on a drive shaft 20 via an articulated arm 19 and on a circular comb axis 22 of a circular comb 23 via an articulated arm 21.
  • the round comb is provided with a comb segment 24.
  • the signals generated by the sensor 29 when the cotton wool runs out are transmitted to the control unit 9 and 27 via a path 30.
  • the winding 3 is rotated in the unwinding direction Z and the wadding web is rolled off the winding 3 behind the support 30.
  • the transmission of the rotary movement from the winding roller 4 takes place in the area of the support 30 with the diameter D1
  • the diameter Dl in with respect to the diameter D, a lower peripheral speed and thus a different delivery speed for the wadding 10.
  • the peripheral speed of the winding roller 4 is constant, but different in the toothings. This means that with a decreasing winding diameter D and thus a decreasing weight of the winding 3, this indentation depth X decreases and the dimension D approaches the diameter D1 and the cotton is pressed less strongly into the toothing 47 of the winding rollers.
  • the speed differences with respect to the fürmessr D or Dl reduced. This means that the delivery speed of the web W '10 approaches with decreasing winding diameter D of the applied via friction speed at the diameter Dl.
  • the winding roller 4 driven by the motor 8 sets the winding 3 in rotation by means of friction.
  • the unwound lap 10 is deflected downwards via a deflecting roller 11 and. comes into the effective range of a feed roller 18.
  • This feed roller 18 is driven intermittently by the movement of the top tongs via a ratchet drive (not shown) and conveys the wadding web 10 into the area of the clamping point of the tongs 17.
  • the tongs 17 are located in the rear Position (not shown), it is closed and part of the cotton wool 10, a so-called fiber beard, protrudes from the closed pliers 17 and is combed out via a comb segment 24 of the rotating circular comb 23. The pliers 17 then move forward again and open.
  • the combed-out fiber beard is delivered to a tear-off cylinder pair 25, between which an already combed-out fiber fleece is clamped.
  • a tear-off cylinder pair 25 between which an already combed-out fiber fleece is clamped.
  • the tear-off cylinder 25, the round comb 23 and the drive roller for the pliers 17 are driven by a central drive unit 26 which is controlled by a control 27.
  • the controller 27 and the control unit 9 are connected to one another via a path 33 and can be coordinated with one another. This coordination relates to the normal interaction during the comb play, with the engine speed 8 being readjusted as a result of a drift correction independently of this interaction.
  • a roller 12 which is spring-loaded via a spring 34 is attached to the deflection roller 11, the wadding web 10 moving between the two.
  • the feeler roller is set in rotary movement, this rotary movement being recorded by a speed or incremental encoder. This rotary movement is converted into a corresponding signal by a controller 15 and output to the control unit.
  • the motor speed 8 and thus the speed of the winding roller 4 are readjusted at intervals in relation to the unwinding length of the winding path 10 determined by the sensing roller.
  • the amount of the readjustment takes place in the example shown, as can be seen from the diagram shown within the control unit, step-like, on the basis of step increments stored in the control unit.
  • the mass of the rolled cotton 10 is measured by a capacitive measuring element and compared in a controller 37 with a predetermined actual value. If there is a drift during the unwinding process, the controller 37 emits a signal to the control unit 9 via the path 36 when a setpoint deviates, which regulates the motor 8. This results in a closed control loop and the motor 8 or the speed of the winding roller 4 is continuously readjusted in the event of a deviation from a desired value.
  • FIG. 3 shows a similar control device corresponding to FIG. 5.
  • an irregularity of a fiber sliver 38 which was formed by a drafting device 39 which is arranged downstream of the combing heads 16, is detected.
  • the sliver 38 is monitored via the measuring element 40 for the number position or mass per unit length.
  • the signal generated in this way is fed to a controller 41, in which a setpoint / actual value comparison is carried out. If the actual value deviates from the target value, a control signal is transmitted to the control unit 9 via a path 42 for the readjustment of the motor 8. It is also a closed control loop, but the Readjustment is delayed. With this type of control, however, the influence of the combed leaves must also be taken into account in order to rule out incorrect measurements.
  • the sliver 38 guided through the measuring element passes via a deflection roller 43, via calender rollers 44 to a funnel wheel 45 which can be driven in rotation and finally deposits the sliver 38 in a can 46 for further conveyance to subsequent process stages.
  • a sensor 29 is assigned to the winding in order to monitor the expiry time of the winding 3. That is, as soon as the white cotton 10 is unwound from the black sleeve 28, the sensor 29 recognizes the black sleeve surface and emits a signal to the controller 9 for the motor 8 and to the controller 27 for the control unit 26. On the one hand, this causes the drive unit 26 to be stopped via the control unit 27 and also the drive 8 to be interrupted by the control unit 9. Simultaneously with this interruption, the speed mark for controlling the motor 8 is reset to the basic speed N1, which comes into effect at the start of the unwinding process of the new reel. As already described above, this basic speed N1 can be overridden when an automatic roll changer is used until the start of the normal rolling process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Selon un procédé d'amenée d'une nappe (10) déroulable d'un rouleau de nappe (3) et amenée à une unité de peignage (16) d'une peigneuse, le rouleau de nappe (3) repose sur des cylindres d'enroulement (4, 5) rotatifs et au moins un des cylindres d'enroulement (4) est relié à un entraînement. Dans la pratique, on a constaté qu'à mesure que le diamètre (D) du rouleau de nappe diminue, la vitesse d'amenée de la nappe décroit. Cette déviation, qui affecte également le ruban formé par la peigneuse, est généralement connue sous le nom de "dérive". Le titre du ruban de carde formé par la peigneuse n'est ainsi plus assuré. Afin de compenser cette déviation, on propose d'accroître la vitesse de rotation des cylindres d'enroulement entraînés (4) pendant une période de déroulement d'un rouleau de nappe (3).
EP92919324A 1991-09-20 1992-09-18 Entrainement pour peigneuse Expired - Lifetime EP0558719B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2801/91 1991-09-20
CH2801/91A CH683847A5 (de) 1991-09-20 1991-09-20 Gesteuerter Wickelwalzenantrieb einer Kämmaschine.
PCT/CH1992/000190 WO1993006275A1 (fr) 1991-09-20 1992-09-18 Entrainement pour peigneuse

Publications (2)

Publication Number Publication Date
EP0558719A1 true EP0558719A1 (fr) 1993-09-08
EP0558719B1 EP0558719B1 (fr) 1997-07-30

Family

ID=4241898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92919324A Expired - Lifetime EP0558719B1 (fr) 1991-09-20 1992-09-18 Entrainement pour peigneuse

Country Status (6)

Country Link
US (1) US5367746A (fr)
EP (1) EP0558719B1 (fr)
JP (1) JP2755482B2 (fr)
CH (1) CH683847A5 (fr)
DE (1) DE59208754D1 (fr)
WO (1) WO1993006275A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978581A2 (fr) 1998-08-05 2000-02-09 Maschinenfabrik Rieter Ag Machine pour le traitement de matériau textile avec banc d'étirage

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2705890B2 (ja) * 1993-10-21 1998-01-28 富士通アイソテック株式会社 ロール紙限界残量検出器
DE19506351C2 (de) * 1995-02-23 1998-02-19 Csm Gmbh Antriebsvorrichtung für die Speisewalzen an Kämmaschinen mit mehreren Kämmköpfen
US5676298A (en) * 1995-09-08 1997-10-14 Belcor Industries Inc. Tape dispenser using non-uniform tension to reduce tape breakage
DE10060227A1 (de) * 2000-12-04 2002-06-13 Truetzschler Gmbh & Co Kg Vorrichtung am Ausgang einer Strecke zur Erfassung des Fasergutes
CN1768172A (zh) * 2003-04-02 2006-05-03 里特机械公司 精梳机的夹持装置的驱动器
JP5287371B2 (ja) * 2009-03-06 2013-09-11 株式会社リコー ロール紙給紙装置及びそれを備えた画像形成装置
WO2012035543A1 (fr) * 2010-09-14 2012-03-22 Lakshmi Machine Works Ltd. Appareil de réglage de jauge de pince
JP5201234B2 (ja) * 2011-03-22 2013-06-05 株式会社豊田自動織機 コーマにおけるラップ供給制御装置及びラップ供給制御方法
RU2633219C2 (ru) * 2013-03-22 2017-10-11 ЭсСиЭй ТИШЬЮ ФРАНС Узел раздаточного устройства
CN105200571A (zh) * 2015-10-30 2015-12-30 湖州织里韩衣童社服饰有限公司 一种刺辊分梳结构
DE102020109963A1 (de) * 2020-04-09 2021-10-14 TRüTZSCHLER GMBH & CO. KG Anlage und Verfahren zur Herstellung eines gekämmten Faserbandes

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SE450703B (sv) * 1982-04-01 1987-07-20 Asea Ab Sett for kontrollering av den i en parullad pappersrulle inrullade materialspenningen
SE436865B (sv) * 1983-06-13 1985-01-28 Asea Ab Anordning for att i en rullmaskin vid upprullning till en rulle av tunt material kunna meta banlengd da ett banbrott intreffat
DE3614436A1 (de) * 1986-04-29 1987-11-05 Jagenberg Ag Messeinrichtung fuer die druckzonenbreite und/oder flaechenpressung zwischen einem wickel einer materialbahn und einer gegen den wickel gedrueckten walze und verfahren zum wickeln einer materialbahn
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JP2676554B2 (ja) * 1989-07-10 1997-11-17 ティーオーエー株式会社 短縮機能付きポケット・ページャ
DE3935657A1 (de) * 1989-10-26 1991-05-02 Zinser Textilmaschinen Gmbh Zufuehreinrichtung fuer eine kaemmaschine
DE3937989C1 (en) * 1989-11-15 1991-01-24 Zinser Textilmaschinen Gmbh, 7333 Ebersbach, De Feed device for comb machine - has two feed rolls for coil wound on tube with number of coil layers and lies on both of the feed rolls
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Title
See references of WO9306275A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0978581A2 (fr) 1998-08-05 2000-02-09 Maschinenfabrik Rieter Ag Machine pour le traitement de matériau textile avec banc d'étirage

Also Published As

Publication number Publication date
DE59208754D1 (de) 1997-09-04
WO1993006275A1 (fr) 1993-04-01
CH683847A5 (de) 1994-05-31
JP2755482B2 (ja) 1998-05-20
EP0558719B1 (fr) 1997-07-30
JPH06502894A (ja) 1994-03-31
US5367746A (en) 1994-11-29

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