EP0738796A1 - Fadenliefervorrichtung - Google Patents

Fadenliefervorrichtung Download PDF

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Publication number
EP0738796A1
EP0738796A1 EP96302611A EP96302611A EP0738796A1 EP 0738796 A1 EP0738796 A1 EP 0738796A1 EP 96302611 A EP96302611 A EP 96302611A EP 96302611 A EP96302611 A EP 96302611A EP 0738796 A1 EP0738796 A1 EP 0738796A1
Authority
EP
European Patent Office
Prior art keywords
yarn
transfer
supplied
transfer means
measuring 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
EP96302611A
Other languages
English (en)
French (fr)
Other versions
EP0738796B1 (de
Inventor
Paul Anthony Richard Weston
John Reginald Pilling
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.)
Brintons Carpets Ltd
Original Assignee
Brintons 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 Brintons Ltd filed Critical Brintons Ltd
Publication of EP0738796A1 publication Critical patent/EP0738796A1/de
Application granted granted Critical
Publication of EP0738796B1 publication Critical patent/EP0738796B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during weaving
    • D03D39/08—Gripper Axminster looms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/02—Rotary devices, e.g. with helical forwarding surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/18—Driven rotary elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H61/00—Applications of devices for metering predetermined lengths of running material
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • 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

  • This invention relates to an apparatus for supplying a desired length of yarn.
  • Yarn is used in a wide variety of production processes, for example knitting, embroidery, lace-making, and carpet making. For many of these processes, for example in a gripper Axminster carpet making process, it is necessary to provide the yarn in a yarn carrier.
  • the packages of yarn are typically provided in a creel, and yarn is fed from the packages, around a series of guide rollers to the measuring rollers. Depending on the position of the packages on the creel, the yarn is fed around a different number of guide rollers.
  • the tension in the yarn depends upon the number of guide rollers around which the yarn is fed, the length of the yarn to the measuring rollers and, especially where the packages are spools, with the variation in weight of the spools, the tension being lower for yarn drawn from a partially empty spool compared to what for yarn drawn from a full spool.
  • the yarn tends to stretch as it is drawn to the measuring roller.
  • the amount of stretch depends on the dampness of the yarn, and the tension of the yarn. As the amount of stretch varies for each yarn, it is not possible to compensate for this when measuring a length of yarn, and accordingly it is impossible to accurately measure a desired length of yarn.
  • an apparatus for dispensing a predetermined length of yarn comprises a transfer means for drawing yarn from a supply, and supplying yarn to a measuring means, in which the transfer means includes a rotatable transfer member around which, in use, yarn is wound so that yarn is drawn from the supply upon rotation of the transfer member, and in which the surface of the transfer member is arranged to move at a speed greater than the speed at which yarn is supplied to the measuring means so that yarn is supplied with substantially no tension.
  • the rate at which yarn is drawn into the transfer member will exceed the rate at which it is supplied to the measuring means. Accordingly, the yarn is supplied to the measuring means at a very low tension. This results in constant stretching of the yarn, thereby improving the accuracy of the measurement of length.
  • the transfer member is a rotating member around which the yarn is wound, any excess yarn supplied to the transfer means causes the yarn to slip on the rotating transfer member and no further yarn is drawn into the transfer means. This prevents excessive yarn from becoming tangled in the transfer means.
  • the speed of the surface of the transfer member is approximately 10% higher than the speed at which yarn is supplied to the measuring means.
  • the measuring means may be in the form of opposed rollers, one of which is rotatably driven to draw yarn from the yarn supply and through the transfer means.
  • the transfer member comprises two capstans, the yarn being wound around both of these. This is advantageous because the size of the rotating transfer member can be reduced, or elongated, without reducing the amount of yarn in the transfer means.
  • two yarn brakes are provided, one before the transfer member and one after. These brakes stop the supply of yarn to the measuring means. Preferably the rotation of the transfer member is stopped after the application of the yarn brakes to reduce wear on the transfer member and on the yarn wound around the transfer member.
  • the apparatus preferably includes a tensioner between the transfer means and the measuring means. This applies a predetermined tension to the yarn as this is supplied to the measuring means. This ensures that the tension of all yarn supplied to the measuring means is constant and accordingly that all yarns are stretched to the same extent. This can be compensated for by the measuring means.
  • the apparatus of the present invention may advantageously be included in an air cell filling apparatus such as that disclosed in our earlier patent EP-B-0,058,478.
  • the transfer means may include a plurality of transfer members, each transfer member arranged to have a single yarn wrapped around it.
  • Yarn 1 is supplied from one of a number of yarn packages 2 to the transfer means 3. Some of the yarn packages 2 will be full, and some only partially full. The force required to pull yarn 1 from these packages 2 differs depending on the size and density of the packages, and the distance over which the yarn must be pulled.
  • the yarn 1 is fed into the transfer medium 3, and around two capstan rollers 4, 5.
  • the yarn 1 is fed from the transfer means 3, via a tensioning device such as a pair of opposed nip rollers 6 over a measuring roller 7 to an air cell filling machine.
  • the capstan rollers 4, 5 are arranged to rotate so that the surface of the rollers 4, 5 move at a speed approximately 10% quicker than the speed at which yarn 1 is drawn into the filling machine. The rotation of the capstan rollers 4, 5 assists in drawing yarn from the yarn package 2 into the transfer means 3.
  • the yarn 1 As yarn 1 is supplied from the transfer means 3, the yarn 1 again tightens on the capstans 4, 5 and accordingly more yarn 1 is drawn into the transfer means 3 from the package 2. In this way, the tension in the yarn 1 supplied from the transfer means 3 to the measuring roller 7 is always constant.
  • the yarn 1 is fed over a measuring roller 7 which is rotated by the flow of the yarn 1 over its surface.
  • the tension in the yarn 1 is known, the amount of stretch of the yarn 1 is also known, and therefore the rotation of the roller 7 corresponds to the amount of yarn 1 dispensed.
  • a pair of opposed measuring rollers may be included.
  • one of the measuring rollers is a driven roller which draws yarn 1 from a package 2, through the transfer means 3 and the tensioning device 6. The length of yarn is calculated by the rotation of the other measuring roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
EP19960302611 1995-04-21 1996-04-15 Fadenliefervorrichtung Expired - Lifetime EP0738796B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9508197.2A GB9508197D0 (en) 1995-04-21 1995-04-21 Yarn supply
GB9508197 1995-04-21

Publications (2)

Publication Number Publication Date
EP0738796A1 true EP0738796A1 (de) 1996-10-23
EP0738796B1 EP0738796B1 (de) 2000-06-28

Family

ID=10773354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960302611 Expired - Lifetime EP0738796B1 (de) 1995-04-21 1996-04-15 Fadenliefervorrichtung

Country Status (4)

Country Link
EP (1) EP0738796B1 (de)
AU (1) AU707382B2 (de)
DE (1) DE69609000T2 (de)
GB (1) GB9508197D0 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019948A1 (en) * 1996-11-01 1998-05-14 Tetra Pak Hoyer A/S A method and a system for controlling tension of paper and foil webs
GB2402680A (en) * 2001-08-02 2004-12-15 Griffith Textile Mach Ltd Yarn feed apparatus
WO2005051823A1 (en) * 2003-11-25 2005-06-09 Cats Beheer B.V. Method and device for equalizing tension in parallel yarns
WO2018009120A1 (en) * 2016-07-06 2018-01-11 Iro Aktiebolag Weft yarn feeding arrangement with endless running belt and a method for controlling the arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123505A1 (de) * 2016-12-05 2018-06-07 Institut Für Verbundwerkstoffe Gmbh Vorrichtung und Verfahren zur Ablage von imprägnierten Fasern

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE817875C (de) * 1939-04-07 1951-10-22 Poron S A R L Ets Verfahren und Vorrichtung, um einen Faden an einen Webstuhl oder an eine andere Textilmaschine zu liefern
GB2074618A (en) * 1980-04-30 1981-11-04 Schuster & Co F M N Thread reeling apparatus
EP0058478A1 (de) * 1981-02-05 1982-08-25 Brintons Limited Herstellung von Mustergeweben
DE4129028A1 (de) * 1990-09-06 1992-03-12 Barmag Barmer Maschf Falschzwirnkraeuselmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE817875C (de) * 1939-04-07 1951-10-22 Poron S A R L Ets Verfahren und Vorrichtung, um einen Faden an einen Webstuhl oder an eine andere Textilmaschine zu liefern
GB2074618A (en) * 1980-04-30 1981-11-04 Schuster & Co F M N Thread reeling apparatus
EP0058478A1 (de) * 1981-02-05 1982-08-25 Brintons Limited Herstellung von Mustergeweben
DE4129028A1 (de) * 1990-09-06 1992-03-12 Barmag Barmer Maschf Falschzwirnkraeuselmaschine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019948A1 (en) * 1996-11-01 1998-05-14 Tetra Pak Hoyer A/S A method and a system for controlling tension of paper and foil webs
US6193184B1 (en) * 1996-11-01 2001-02-27 Tetra Pak Hoyer A/S Method and a system for controlling tension of paper and foil webs
GB2402680A (en) * 2001-08-02 2004-12-15 Griffith Textile Mach Ltd Yarn feed apparatus
GB2402680B (en) * 2001-08-02 2005-02-16 Griffith Textile Mach Ltd Yarn feed apparatus
WO2005051823A1 (en) * 2003-11-25 2005-06-09 Cats Beheer B.V. Method and device for equalizing tension in parallel yarns
WO2018009120A1 (en) * 2016-07-06 2018-01-11 Iro Aktiebolag Weft yarn feeding arrangement with endless running belt and a method for controlling the arrangement
CN109415851A (zh) * 2016-07-06 2019-03-01 Iro有限公司 具有环形运行带的纬纱进给布置和用于控制该布置的方法

Also Published As

Publication number Publication date
EP0738796B1 (de) 2000-06-28
DE69609000D1 (de) 2000-08-03
GB9508197D0 (en) 1995-06-07
AU707382B2 (en) 1999-07-08
DE69609000T2 (de) 2000-11-23
AU5069496A (en) 1996-10-31

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