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EP0350976A1 - Synchrone Fadenliefervorrichtung - Google Patents

Synchrone Fadenliefervorrichtung Download PDF

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Publication number
EP0350976A1
EP0350976A1 EP89201438A EP89201438A EP0350976A1 EP 0350976 A1 EP0350976 A1 EP 0350976A1 EP 89201438 A EP89201438 A EP 89201438A EP 89201438 A EP89201438 A EP 89201438A EP 0350976 A1 EP0350976 A1 EP 0350976A1
Authority
EP
European Patent Office
Prior art keywords
drum
yarn
feeding device
yarn feeding
belt
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.)
Ceased
Application number
EP89201438A
Other languages
English (en)
French (fr)
Inventor
Jen-Fu Chen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0350976A1 publication Critical patent/EP0350976A1/de
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • 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
    • B65H51/04—Rollers, pulleys, capstans, or intermeshing rotary elements
    • B65H51/08—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements
    • B65H51/10—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips
    • B65H51/105—Rollers, pulleys, capstans, or intermeshing rotary elements arranged to operate in groups or in co-operation with other elements with opposed coacting surfaces, e.g. providing nips one of which is an endless belt
    • 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 synchronous yarn feeding device for a textile machine.
  • Fig. 11 illustrates a typical conventional yarn feeding device.
  • the drum 1 having a plurality of round bars 3 formed with a cage-shaped periphery is rotatably mounted on a yarn guide frame 5.
  • a belt 2 presses the yarn 9 onto the smooth outer periphery of the drum, thereby continuing the yarn feeding operation by frictional force.
  • On frame 5 a pair of porcelain eyes 8 are mounted for guiding the incoming yarn and the outgoing yarn, respectively. Eyes 8 guide the incoming yarn F or outgoing yarn under pressure of belt 2 so that the yarn can be fed on or off the drum.
  • a drawback of pair art yarn feeding apparatus is that instability and inaccuracies may be introduced into the yarn feeding operation.
  • the contact surface between the belt and the drum is decreased and the contact surface becomes irregular. Therefore, the driving belt 2 will have a different effect on the speed of the turning drum for each drum that it is in contact with.
  • these differences are not easily perceived by the operator, and thus connot be corrected by adjusting any conventional means.
  • the quality of weaved cloth is therefore degraded. Yarn breakage is increased and the profitability of production is decreased.
  • an object of the present invention is to provide a synchronous yarn feeding device, which enables the rotation speed of each yarn feeding drum, the yarn feeding speed and the driving speed of belt to be synchronized, thereby making uniform the feeding speed and tension of each of the yarn strands pressed on each of respective yarn feeding drums by the same belt.
  • a further object of the present invention is to provide a synchronous yarn feeding drum with an elastic body whereby the elasticity of said elastic body yields a relatively larger contacting surface for the yarn and a less slippery surface so that the yarn feeding operation will be more stable and accurate.
  • the basic components of the synchronous yarn feeding device of the present invention comprise a yarn feeding drum, a driving belt, a yarn guiding frame, an incoming yarn guide eye and an outgoing yarn guide eye.
  • the yarn guiding frame and outgoing yarn guide eye are omitted in the drawings and description.
  • the preferred embodiments of the present invention include projections or protrusions on the drum and corresponding holes or slots on the belt
  • alternate positioning/driving means can be provided on the drum or belt.
  • studs could be provided on the belt and holes provided in the drum.
  • the important concept is that a first portion on the outer periphery of the drum is synchronously driven by the endless driving belt with the aid of the positioning/driving means on both the drum and belt.
  • the yarn feeding drum of the present invention functions as a conventional driving pulley to drive the drum in addition to performing the function of feeding yarn.
  • the drum of the present invention is directly and synchronously driven by the endless driving belt so that the yarn wound on the drum and further pressed thereon by the driving belt will be fed in synchronism with the driving speed of the driving belt with the aid of the driving/­positioning means on the drum and belt.
  • a yarn feeding drum 10 is rotatably mounted on a frame (not shown), and includes a plurality of round bars 14, an upper cover 12, a lower cover 15 and a linking shaft 11.
  • Drum 10 is provided with a solid cylinder 100 arranged within the round bars 14.
  • a plurality of positioning /driving means in the form of protrusions or studs 13 is located on a first portion of the outer periphery of cylinder 100 near the upper cover 12.
  • Each of the protrusion 13 is interposed between every two round bars 14 on a first portion 101 of cylinder 100 located at the upper part of the yarn feeding drum 10.
  • the drum 10 is driven by belt 20 that includes a first portion of the upper part of belt 20 with a corresponding positioning/driving means in the form of holes 21. Each of the protrusions or studs 13 is sequentially engaged by holes 21. Yarn feeding drum 10 is thereby driven synchronously with driving belt 20.
  • yarn 30 is guided through a guiding eye 40 to a second portion 102 of the yarn feeding drum 10 and is pressed onto drum portion 102 by a second porton 22 of the driving belt 20.
  • Yarn feeding drum 10 is driven synchronously with belt 20 as previously described.
  • Yarn 30, pressed between second portions 22 and 102, is thereby driven forward synchronously with the belt 20, thus achieving the goal of precise yarn feeding.
  • the yarn guiding eye 40 is displaced downward, as shown in the dashed lines 40 of Fig. 2.
  • Yarn 30 will not be pressed by the second portion 22 of driving belt 20 in this position, and the yarn will slide along a third portion 103 of the yarn feeding drum 10, as shown in dashed line 30 in Fig. 2.
  • FIG. 3 An alternative embodiment of the yarn feeding drum 10 is illustrated in Fig. 3. As shown, the outer periphery of the drum, rather than including a plurality of round bars, is made solid, as indicated at 100A. A plurality of studs 13 is arranged along a first portion thereof.
  • Fig. 4 illustrates a third embodiment of the present invention, wherein the outer periphery of the yarn feeding drum 10 has a sawtooth configuration indicated at 100B.
  • a plurality of protrusions or studs 13 is disposed on the periphery of the drum 10 and achieve the same goal as the protrusions or studs described above.
  • a fourth embodiment of the present invention is illustrated in Fig. 5.
  • a plurality of projections 13A is formed on a first portion of the drum 10.
  • a first portion of a belt 20 is formed with a plurality of repsective cutout slots 21A, whereby the slots 21A engage the projections 13A of the drum with the yarn 30 being pressed between a second portion 22 of the belt 20 and a second portion 102 of the drum to enable precise feeding of yarn.
  • Fig. 6 illustrates the cooperation between the positioning/driving means on both the drum and the belt.
  • a first portion 101 of the drum is provided with a plurality of equally spaced protrusions 13.
  • the protrusions are sequentially engaged by respective holes or slots in driving belt 20, thus enabling the drum 10 to rotate synchronously with belt 20.
  • Yarn 30 is pressed upon the outer periphery of the drum 10 by driving belt 20 and thus fed synchronously with the drum 10 and belt 20 to provide a precisely fed supply of yarn.
  • a fifth embodiment of the present invention is shown in Fig. 7.
  • a driving belt 20 is provided with a plurality of projections 21B.
  • the plurality of projections 21B is equally spaced by distance 210.
  • the driving belt 20 is thereby configured to cooperate with a cage-shaped drum 10 whereby each of the projections 21B fits into a corresponding space between each two of the round bars in the drum 10.
  • rotation of drum 10 and delivery of the yarn are synchronous with movement of driving belt 20.
  • Figs. 8 to 10 illustrate a sixth embodiment of the present invention.
  • a resilient body 50 is disposed to cover the second portion 102 of the drum.
  • the second portion 102 of the outer periphery of the drum 10 is provided with a resilient body 50 such that the resilient body, while being contacted by driving belt 20, will become flatter and thinner, thus providing a relatively large contact surface with driving belt 20.
  • the resilient body 50 can be formed with a plurality of protruding portions 51 interposed with a plurality of concave portions 52, as shown in Figs. 9 and 10.
  • the resilient body 50 is shown with the drum 10 of the second embodiment shown in Fig. 3.
  • Other embodiments of drum 10 may also be arranged with the same resilient body 50, if desired.
  • Fig. 10 illustrates the yarn feeding arrangement in which the apparatus of the embodiment of Figs. 8 and 9 are employed. Slipping or movement of the yarn 30 is inhibited by the contact of yarn 30 with the protruding portions 51 of body 50. Contact with portions 51 increases the stability and precision of the yarn feeding operation that is synchronous with the rotation of drum 10.
  • Fig. 9 illustrates a detailed construction of the sixth embodiment of the present invention.
  • a plurality of protrusions 13 is provided on upper disk 12 below which are disposed a plurality of grooves 18 on body 111.
  • a bearing 114 is inserted into a central opening (not shown) in upper cover 12.
  • a resilient body 50 fits around the outer periphery of body 111.
  • a plurality of protruding walls 57 located within the inner surface of resilient body 50 fits into grooves 18 of body 111.
  • a plurality of protruding poles 16 on a lower disk 15 fits into respective holes (not shown) on the upper disk 12, thereby fixing the upper and lower disks together.
  • the upper surface of a third portion 103 of disk 12 engages resilient body 50.
  • Resilient body 50 is thereby bound between the upper and lower disks 12 and 15.
  • An easily manufactured and firmly constructed synchronous yarn feeding drum is thereby provided.
  • the present invention provides a synchronous yarn feeding device with a drum comprising a positioning/driving means including, for example, a plurality of equally-spaced protrusions, and a belt comprising a positioning/driving means including, for example, a plurality of respective holes.
  • the yarn is pressed upon a second portion of the drum and is fed in synchrnoization with the rotation of the yarn feeding drum and the driving belt.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
EP89201438A 1988-07-11 1989-06-05 Synchrone Fadenliefervorrichtung Ceased EP0350976A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21695988A 1988-07-11 1988-07-11
US216959 1994-03-24

Publications (1)

Publication Number Publication Date
EP0350976A1 true EP0350976A1 (de) 1990-01-17

Family

ID=22809129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201438A Ceased EP0350976A1 (de) 1988-07-11 1989-06-05 Synchrone Fadenliefervorrichtung

Country Status (7)

Country Link
EP (1) EP0350976A1 (de)
CN (1) CN1024360C (de)
AU (1) AU3625689A (de)
CA (1) CA1308546C (de)
GB (1) GB2220682B (de)
PH (1) PH26296A (de)
ZA (1) ZA894420B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562797A1 (de) * 1992-03-26 1993-09-29 Jen-Fu Chen Fadenliefervorrichtung mit einem Führungsflansch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102115949A (zh) * 2009-12-30 2011-07-06 陈仁惠 双臂导纱装置的改良结构
CN116002348A (zh) * 2017-10-18 2023-04-25 宁波圣瑞思工业自动化有限公司 一种吊挂线衣架出站系统
CN112522839A (zh) * 2020-11-26 2021-03-19 山东日发纺织机械有限公司 一种定长式不变捻度引纬装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283971A1 (fr) * 1974-09-03 1976-04-02 Vnii Trikotazhnoj Promy Dispositif pour l'alimentation continue en fil d'une chute de tricoteuse circulaire
FR2335438A1 (fr) * 1975-12-18 1977-07-15 Roannais Const Textiles Atel Perfectionnement aux delivreurs pour machine de traitement de fil
EP0026350A2 (de) * 1979-10-02 1981-04-08 Hacoba Textilmaschinen GmbH & Co KG Garnlieferwerk, insbesondere für frisch eingefärbtes Garn
EP0228542A1 (de) * 1985-12-06 1987-07-15 SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH Riemenantriebsvorrichtung, beispielsweise für Fadenliefervorrichtungen für Textilmaschinen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922887A (en) * 1974-09-13 1975-12-02 Singer Co Positive yarn feeding system for circular knitting machine
DE2639206C3 (de) * 1976-08-31 1979-02-08 Gustav Memminger, Verfahrenstechnik Fuer Die Maschenindustrie, 7290 Freudenstadt Fadenliefervorrichtung für mehrsystemige Rundstrickmaschinen
GB2035389B (en) * 1978-10-03 1982-11-03 Carrotte F Knitting
GB2065724B (en) * 1979-12-03 1984-07-11 Zbrojovka Vsetin Np Arrangement for constant feeding of yarn
GB2065723B (en) * 1979-12-11 1983-11-02 Stevcoknit Inc Self actuating yarn feed and drive belt arrangement for circular knitting machines
US4632324A (en) * 1982-11-12 1986-12-30 Mayer & Cie. Gmbh & Co. Strand storing and delivering device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283971A1 (fr) * 1974-09-03 1976-04-02 Vnii Trikotazhnoj Promy Dispositif pour l'alimentation continue en fil d'une chute de tricoteuse circulaire
FR2335438A1 (fr) * 1975-12-18 1977-07-15 Roannais Const Textiles Atel Perfectionnement aux delivreurs pour machine de traitement de fil
EP0026350A2 (de) * 1979-10-02 1981-04-08 Hacoba Textilmaschinen GmbH & Co KG Garnlieferwerk, insbesondere für frisch eingefärbtes Garn
EP0228542A1 (de) * 1985-12-06 1987-07-15 SIPRA Patententwicklungs- und Beteiligungsgesellschaft mbH Riemenantriebsvorrichtung, beispielsweise für Fadenliefervorrichtungen für Textilmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562797A1 (de) * 1992-03-26 1993-09-29 Jen-Fu Chen Fadenliefervorrichtung mit einem Führungsflansch

Also Published As

Publication number Publication date
GB8914015D0 (en) 1989-08-09
ZA894420B (en) 1990-03-28
GB2220682B (en) 1993-03-03
CN1024360C (zh) 1994-04-27
AU3625689A (en) 1990-01-11
CN1040235A (zh) 1990-03-07
PH26296A (en) 1992-04-10
GB2220682A (en) 1990-01-17
CA1308546C (en) 1992-10-13

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