EP0847951B1 - Procédé d'enlèvement pour une machine de texturation - Google Patents

Procédé d'enlèvement pour une machine de texturation Download PDF

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Publication number
EP0847951B1
EP0847951B1 EP97120877A EP97120877A EP0847951B1 EP 0847951 B1 EP0847951 B1 EP 0847951B1 EP 97120877 A EP97120877 A EP 97120877A EP 97120877 A EP97120877 A EP 97120877A EP 0847951 B1 EP0847951 B1 EP 0847951B1
Authority
EP
European Patent Office
Prior art keywords
doffing
package
yarn
reference value
breakage
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
EP97120877A
Other languages
German (de)
English (en)
Other versions
EP0847951A2 (fr
EP0847951A3 (fr
Inventor
Shoichi Tone
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.)
Murata Machinery Ltd
Original Assignee
Murata Machinery Ltd
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 Murata Machinery Ltd filed Critical Murata Machinery Ltd
Publication of EP0847951A2 publication Critical patent/EP0847951A2/fr
Publication of EP0847951A3 publication Critical patent/EP0847951A3/fr
Application granted granted Critical
Publication of EP0847951B1 publication Critical patent/EP0847951B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a doffing method according to the preamble of claim 1.
  • a travelling doffer that performs a sequential doffing operation using a carriage travelling along a chassis has been used as a doffing apparatus for removing packages and for supplying empty paper tubes. More recently, however, individual auto doffers have been used which can be installed more easily than travelling doffers, are more flexible, and which can perform doffing for each winding unit.
  • the individual auto doffer comprises a doffing mechanism provided for each winding unit, a drive shaft common to the winding units that supply a driving force to the doffing mechanism, a clutch for each winding unit that connects the doffing mechanism to the drive shafts, and a stocker in which packages are stored.
  • each section of the doffing mechanism is correlated with the rotational angle of a cam that is rotated by the drive shafts so that the winding unit connected to the drive shafts via the clutch can continue the doffing operation.
  • doffed packages are taken out to the stocker provided behind the chassis.
  • the amount of length of yarn wound round a package is controlled by a sizing device as disclosed in DE-OS-2 121 426.
  • a sizing device as disclosed in DE-OS-2 121 426.
  • Known methods used by the sizing device are a doffing timer for controlling the winding time and the accumulation of the number of rotations of paper tubes.
  • the doffing timer since the yarn is wound at a constant speed, its length is controlled according to the amount of time for which the yarn has been wound. Thus, when a specified amount of yarn has been wound, the package is determined to be full and doffed.
  • doffed packages include full package and those that have been doffed because a yarn has been cut (packages with yarn breakage).
  • packages can be managed more easily by removing such packages before passing them to a subsequent inspection or boxing process. If, however, workers are responsible for sorting small packages, determination and sorting are cumbersome and judgement is likely to be subjective, resulting in conflicting evaluations.
  • the draw and false twist texturing machine shown in Figure 4 for performing the doffing method according to the invention has a chassis 41 on which a large number of winding units are placed on multiple vertical stages and in a single horizontal array and a yarn supplying creel 42 provided behind the chassis 41 to constitute a yarn supplying system.
  • a yarn cutter 43 that cuts yarn at an input port for fed yarn Y and a first feed roller 44 are disposed on the chassis 41.
  • a primary heater 45 that heats yarn, an exhaust gas duct 46, and a cooling plate 47 that cools the yarn are installed above the first feed roller 44 as a processing system, and a pre-twister guide 48, a nip twister 49 that twists the yarn, a tension adjuster 50 that adjusts the tension of the yarn, a second feed roller 51, a secondary heater 52, a third feed roller 53, a yarn feeler 54 that detects the presence of the yarn are disposed in front of the chassis 41.
  • an oiling roller 55, a winder 56 constituting a winding system, and a individual doffing device 57 are installed on the chassis 41.
  • a maintenance passage 58 is provided in front of the chassis 41 and a full package collection passage 59 is provided behind the chassis 41.
  • a stocker 60 faces the full package collection passage 59.
  • the texturing machine 1 having the doffing system using the individual doffing device 57 comprises a doffing mechanism 3 installed for each of a large number of winding units 2 constituting a texturing machine, drive shafts 4, 5, 6 common to each winding unit and disposed along the plurality of winding units 2 in order to supply a driving force to the doffing mechanism 3, electromagnetic clutches 7, 8, 9 that connect the doffing mechanism 3 for the winding unit 2 to the drive shafts 4, 5, 6, a detection means for detecting the size of a package 10, and a sorting means for identifying the package 10 as either a large or a small package.
  • the sorting means can be set as a reference, at a value ranging from of the size of a full package to the size of an empty paper tube, against which the package 10 is identified as either a large or a small package.
  • the winding unit 2 comprises a winding roller 12 that rotates a paper tube or the package 10 using frictional contact, a cradle 11 that holds the paper tube or package 10, and a traverse device 13 that traverses yarn to be wounded.
  • control end 15 including a control panel 14
  • drive end 17 including a drive mechanism 16 for taking each of the drive shafts 4 to 6.
  • the winding unit 2 includes a doffing timer (a sizing device) 18 for measuring the length of wound yarn in order to control the length of yarn wound around the package 10. That is, the timer measures in terms of time the length of the wound yarn that is fed at a constant speed in order to detect a full package, causing the electromagnetic clutch to be activated for doffing.
  • a doffing timer a sizing device
  • the doffing mechanism 3 comprises a cradle movement system 19 for opening, dosing and revolving the cradle 11, a paper tube supply systems 21 for supplying empty paper tubes 20 to the cradle 11 and a yarn threading system 22 for applying the yarn to the paper tube 20 in the cradle 11.
  • the doffing mechanism 3 opens, closes and elevates the cradle 11 and supplies an empty paper tube 20 to, and threads yarn around a paper tube gripped by the cradle 11. These operations are performed based on the rotational angle of the cam of the doffing mechanism.
  • the winding unit 2 includes a push button PB that allows the cam, which has been stopped, to resume rotating.
  • the sorting means sorts packages into large and small packages for doffing when a yarn has been cut. Large packages are taken out to the stocker as in full packages, while small packages are held and suspended from the winding roller 12.
  • the detection means for detecting the size of a package may be a positional or distance sensor that detects the amount of increase in the height of the cradle 11 caused by an increase in the size of the package, or an outer-diameter sensor that measures the outer diameter of the package.
  • the doffing timer 18 is used as the detection means.
  • a reference value B is provided to use the doffing timer 18 that measures the amount (the length) of yarn, as the size detection means for sorting packages into large and small packages.
  • the continuous operation mode is a normal doffing operation mode in which doffing is carried out each time the doffing timer 18 detects a full package, followed by the refilling of an empty paper tube and the subsequent winding of a new package 10.
  • a normal doffing operation is performed to take out the package 10 to the stocker 60.
  • the cradle 11 is first elevated and then opened at that position to discharge the package, and an empty paper tube is then gripped by the cradle 11.
  • the cradle 11 is then lowered to frictionally contact the paper tube with the winding roller 12, and the threading arm 23 is turned to elevate the yarn to the end of the paper tube.
  • the winding roller 12 is rotated and the traverse device 13 is traversed to resume winding.
  • the yarn feeler 54 detects the yarn breakage and the yarn cutter 43 disposed at the input port for the supplied yarn Y cuts the yarn to prevent the end of the yarn from being entwined with the feed roller 44, while lighting a yarn-breakage indication lamp (not shown in the drawings).
  • the count value X of the doffing timer 18 is compared to the reference value B to identify the yarn-breakage package 10 as either a large package that has exceeded the reference value B or a small package that has not reached said value B.
  • the cradle 11 is elevated and opened while the cam of the doffing mechanism 3 is stopped, so the package 10 is rolled into the stocker 60. Determining from the yarn-breakage indication lamp that the yarn has been cut, the operator removes waste yarn entwined in parts of the yarn path of the texturing machine and passes the yarn through the yarn path, allows an air sucker constituting the doffing apparatus to catch and hold the waste yarn, and then presses the push button PB.
  • the cradle 11 which has been stopped at the position at which it discharged the package 10, is reactivated, and the refilling of an empty paper tube in the cradle 11 and the threading of yarn around the paper tube are automatically executed to resume winding.
  • the doffing timer 18 is reset in response to the resumption of winding.
  • a small package doffing operation is performed by elevating the cradle 11 and stopping the cam while the cradle 11 is closed. This small package is held within the cradle 11 while it is suspended from the winding roller 12. This state indicates that the operator should remove the package.
  • the operator On viewing the yarn-breakage indication lamp, the operator approaches the apparatus to deal with the yarn breakage, reaches for the package from the maintenance passage 58 side, and presses the push button PB while the operator holds the package in his or her hands from below.
  • the push button PB When the push button PB is pressed, the cam is rotated slightly to open the cradle 11. The operator then removes the package while holding it in his or her hands. After a yarn passing operation and when the operator presses the push button PB again as described above, the doffing system threads the yarn into the paper tube.
  • the count value always exceeds the reference value B so all yarn-breakage packages are taken out to the stocker.
  • the counter value never exceeds the reference value B so only full packages are taken out to the stocker with all yarn-breakage packages held.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (5)

  1. Procédé d'enlèvement pour une machine de texturation comportant une pluralité d'unités d'enroulement ainsi qu'un système d'enlèvement comprenant un moyen de détection pour détecter la grandeur d'une bobine et pour trier les bobines pendant l'enlèvement sur la base de la grandeur détectée (X), caractérisé en ce que
    a) si aucune rupture de fil n'est détectée, une opération d'enlèvement de bobine est effectuée,
    b) lorsqu'une rupture de fil est détectée, le moyen de détection compare la grandeur de bobine à rupture (X) avec une valeur de référence (B) et
    b1) lorsque la grandeur de bobine à rupture (X) est une grandeur de bobine élevée qui dépasse la valeur de référence (B), une opération d'enlèvement est également effectuée et
    b2) lorsque la grandeur de bobine à rupture (X) est une grandeur de bobine réduite en dessous de la valeur de référence (B), une opération de petite bobine est effectuée au moyen de laquelle la bobine est stockée séparément.
  2. Procédé d'enlèvement selon la revendication 1, caractérisé en ce que lorsque la grandeur de bobine à rupture (X) est une grandeur de bobine élevée qui dépasse la valeur de référence (B), la bobine est éjectée, l'opération d'enlèvement est arrêtée, les déchets de filé, si tant est qu'il y en ait, sont retirés et l'opération d'enlèvement est redémarrée.
  3. Procédé d'enlèvement selon la revendication 1 ou 2, caractérisé en ce que la valeur de référence (B) est ajustable.
  4. Procédé d'enlèvement selon la revendication 3, caractérisé en ce que la valeur de référence (B) est ajustable à (A>B≥0).
  5. Procédé d'enlèvement selon la revendication 3, caractérisé en ce que la valeur de référence (B) est ajustable à (B≥A).
EP97120877A 1996-12-13 1997-11-27 Procédé d'enlèvement pour une machine de texturation Expired - Lifetime EP0847951B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP333791/96 1996-12-13
JP33379196 1996-12-13
JP8333791A JP3047838B2 (ja) 1996-12-13 1996-12-13 仮撚機の玉揚システム

Publications (3)

Publication Number Publication Date
EP0847951A2 EP0847951A2 (fr) 1998-06-17
EP0847951A3 EP0847951A3 (fr) 1999-03-10
EP0847951B1 true EP0847951B1 (fr) 2002-05-02

Family

ID=18270003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97120877A Expired - Lifetime EP0847951B1 (fr) 1996-12-13 1997-11-27 Procédé d'enlèvement pour une machine de texturation

Country Status (6)

Country Link
EP (1) EP0847951B1 (fr)
JP (1) JP3047838B2 (fr)
KR (1) KR100328466B1 (fr)
CN (1) CN1205103C (fr)
DE (1) DE69712297T2 (fr)
TW (1) TW369572B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI618670B (zh) * 2014-05-16 2018-03-21 Maschinfabrik Rieter Ag Drawer holder and ring spinning machine and for supporting the transfer of the bobbin tube Device and method for predetermined working position on a spindle of a ring spinning machine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3186642B2 (ja) * 1997-05-02 2001-07-11 村田機械株式会社 仮撚工程の自動化システム
CN102899748B (zh) * 2012-10-16 2015-12-09 新昌县盛大科技有限公司 纱线制造设备运行单锭控制方法
CN102912500A (zh) * 2012-11-16 2013-02-06 吴江精美峰实业有限公司 一种加弹机
JP7489188B2 (ja) * 2019-12-09 2024-05-23 Ｔｍｔマシナリー株式会社 糸条ハンドリング装置
CN115626525B (zh) * 2022-09-29 2023-10-03 浙江康立自控科技有限公司 一种络丝机卷绕装置满筒控制系统及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3820730A (en) * 1968-12-24 1974-06-28 T Endo Automatic doffing apparatus for textile machine having one or more winding units
US3741490A (en) * 1971-11-16 1973-06-26 Logan J Yarn package doffing apparatus and method
DE3716473A1 (de) * 1987-05-16 1988-11-24 Schlafhorst & Co W Verfahren zum sortieren von kreuzspulen an einem spulautomaten
JPH0218264A (ja) * 1988-07-05 1990-01-22 Murata Mach Ltd 自動ワインダー
CA1330839C (fr) * 1989-08-30 1994-07-19 Douglas Edward Turek Methode de prevision du diametre final d'un support pour enroulements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI618670B (zh) * 2014-05-16 2018-03-21 Maschinfabrik Rieter Ag Drawer holder and ring spinning machine and for supporting the transfer of the bobbin tube Device and method for predetermined working position on a spindle of a ring spinning machine

Also Published As

Publication number Publication date
EP0847951A2 (fr) 1998-06-17
JP3047838B2 (ja) 2000-06-05
TW369572B (en) 1999-09-11
KR19980063526A (ko) 1998-10-07
EP0847951A3 (fr) 1999-03-10
CN1184764A (zh) 1998-06-17
DE69712297T2 (de) 2002-12-19
DE69712297D1 (de) 2002-06-06
KR100328466B1 (ko) 2002-10-25
JPH10168683A (ja) 1998-06-23
CN1205103C (zh) 2005-06-08

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