EP0378870A1 - Dispositif tendeur à action ajustable pour ajuster la tension de fils amenés aux machines textiles, notamment aux machines à tricoter - Google Patents

Dispositif tendeur à action ajustable pour ajuster la tension de fils amenés aux machines textiles, notamment aux machines à tricoter Download PDF

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Publication number
EP0378870A1
EP0378870A1 EP89203127A EP89203127A EP0378870A1 EP 0378870 A1 EP0378870 A1 EP 0378870A1 EP 89203127 A EP89203127 A EP 89203127A EP 89203127 A EP89203127 A EP 89203127A EP 0378870 A1 EP0378870 A1 EP 0378870A1
Authority
EP
European Patent Office
Prior art keywords
support
thread
wheels
tension
axis
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.)
Withdrawn
Application number
EP89203127A
Other languages
German (de)
English (en)
Inventor
Bruno Pogliani
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.)
Santoni SpA
Original Assignee
Santoni SpA
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 Santoni SpA filed Critical Santoni SpA
Publication of EP0378870A1 publication Critical patent/EP0378870A1/fr
Withdrawn legal-status Critical Current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
    • D04B15/44—Tensioning devices for individual threads
    • 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
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/11—Actuating means linear pneumatic, e.g. inflatable 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
    • B65H2555/00—Actuating means
    • B65H2555/20—Actuating means angular
    • B65H2555/23—Actuating means angular magnetic, e.g. rotary solenoids
    • 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 tension with which one or more thread(s) is(are) fed to a textile machine is one among the most important factors for a high-quality product to be obtained.
  • the correct tension of the thread is essential if a certain loop density has to be achieved.
  • this tension can be modified during the course of processing, in order to obtain article portions with different characteristics, or differently shaped products in the various component parts thereof.
  • the purpose of the present invention is therefore of providing a tensioning device with adjustable action, for controlling the tension of thread fed to textile machines, in particular to knitting machines, which overcomes these drawbacks and above all makes it possible a delicate action to be exerted on the thread, which does not practically cause a rubbing and a deposition of dirt, or of any other foreign substances, which may alter the tension parameters and/or the characteristics of the thread.
  • the thread which, during its movement into contact with the wheels, causes the wheels -- idling on their support -- to revolve, only undergoes an action of rolling friction, and not of sliding friction, the action of rubbing of the thread, and therefore its wear, being reduced as compared to the traditional devices.
  • the tension applied to the thread By varying the angle of incidence of the thread relatively to the guide wheels, i.e., by differently orientating the support, the rolling friction value, and consequently the tension applied to the thread, varies smoothly and progressively. As a consequence, the tension can be adjusted with precision.
  • the controlled change in tension can take place according to a programmed schedule, as a function of the need by the textile machine, with said tension being increased, or decreased, according to a pre-established law.
  • the wheels 3 and 4 are provided with a peripheral race in order to secure the guide of the thread 2, and are positioned on a same side relatively to the support 5, with their respective axes being substantially parallel to each other, and perpendicular to the plane of the support 5.
  • the support 5 is orientated in an angular position in which the wheels 3 and 4 are disengaged from the thread 2, are are at opposite sides relatively to said thread.
  • the thread 2 substantially runs through the central point between the wheels 3, 4. Under these conditions, the device 1 does not supply any tension to the thread 2, and the only tension to which said thread is subject is the tension generated by the free unwinding from the thread package.
  • a device makes it hence possible constant tension conditions to be achieved, with no need for cleaning or servicing operations, throughout the time during which the support 5 remains orientated according to a certain angle.
  • a pneumatic system of actuation of the support 5 is schematically shown, which comprises a piston 13 inside a cylinder 14.
  • the piston 13 is subject to the pressure applied by a fluid on the one side thereof, and to the action of a return spring 15 on its other side.
  • the fluid is fed by a pressurized fluid source 16.
  • the stem 17 of the piston 13 is connected with the shaft of orientation of the support 5, e.g., through a toothing 19 provided on the stem 17, which engages a pinion 20 integral with the support orientation shaft.
  • the command of the variation of the tension of the thread could also be derived from the main cylinder of the machine, through suitable mechanical devices.
  • the tension of a thread fed to a textile machine can be increased or decreased as desired, or can be kept constant, in an extremely simple way, and within a wide range of values. It should be observed that on the support 5 also further wheels engaged by the thread could be installed, which would produce an increase in thread tension owing to the higher value of the generated rolling friction, even if the increase in friction generated by the additional wheels would not be modified by the change in orientation of the support 5, but would remain constant, in that the configuration of the trajectory of the thread between the inlet and outlet wheels would remain constant.
  • the hereinabove disclosed and illustrated device is suitable for operating on any planes, whether vertical, horizontal, or inclined, a matter of fact which renders particularly wide the range of applications of said device.
  • the orientation of the support 5 could also be performed by means of a spring system, or by means of a manual system, without thereby departing from the scope of the present invention.
  • the axis of orientation of the support 5 could also be positioned differently from as shown. For example, not necessarily does it coincide with the axis of symmetry of the support 5, and it could lay somewhere else between the wheels 3 and 4. It could also coincide with the axis of revolution of either of the wheels 3 and 4 (see Figure 4), or it could be in such a position that the wheels 3 and 4 are both positioned on a same side relatively to the orientation axis ( Figure 5).
  • the wheels 3, 4 could be supported in an interchangeable way, so that they can be replaced by wheels different in weight, material or size, with the tension parameters being consequently varied.
  • wheels could be used, which are made from sintered plastics, or ceramic materials, for small tensions; and wheels made from special steel, or from another, relatively high-weight, material, in case larger tensions are required.
  • wheels different from one another could be installed in order to obtain intermediate tension values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP89203127A 1988-12-16 1989-12-08 Dispositif tendeur à action ajustable pour ajuster la tension de fils amenés aux machines textiles, notamment aux machines à tricoter Withdrawn EP0378870A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8822977A IT1228042B (it) 1988-12-16 1988-12-16 Dispositivo tensionatore ad azione regolabile per fili alimentati a macchine tessili, in particolare macchine per maglieria
IT2297788 1988-12-16

Publications (1)

Publication Number Publication Date
EP0378870A1 true EP0378870A1 (fr) 1990-07-25

Family

ID=11202516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89203127A Withdrawn EP0378870A1 (fr) 1988-12-16 1989-12-08 Dispositif tendeur à action ajustable pour ajuster la tension de fils amenés aux machines textiles, notamment aux machines à tricoter

Country Status (3)

Country Link
EP (1) EP0378870A1 (fr)
JP (1) JPH02216249A (fr)
IT (1) IT1228042B (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619261A1 (fr) * 1993-04-05 1994-10-12 B.T.S.R. International S.p.A. Procédé et dispositif pour surveiller et maintenir la régulation correcte de la tension d'un fil dimentant une machine textile
ES2068112A2 (es) * 1992-12-21 1995-04-01 Lopez Jose Rubio Mecanismo para el tensado de hilos textiles en fibras cortas y largas.
EP0659919A1 (fr) * 1993-12-22 1995-06-28 Picanol N.V. Frein de fil de trame pour un métier à tisser
CN103056251A (zh) * 2013-01-16 2013-04-24 建科机械（天津）股份有限公司 一种钢筋牵引机构
CN105947790A (zh) * 2016-07-18 2016-09-21 吴江福爱梁纺织有限公司 动态补偿式并线张力系统
CN105947792A (zh) * 2016-07-18 2016-09-21 吴江福爱梁纺织有限公司 筒纱防松卷绕系统
CN106006219A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 张力恒定的并纱系统
CN106006203A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 双股并线张力平衡装置
CN106006206A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 恒张力并线系统
CN110923930A (zh) * 2019-11-12 2020-03-27 台州施特自动化有限公司 一种针织设备用进线机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2517780Y2 (ja) * 1992-03-16 1996-11-20 勇二 吉田 編機における糸のテンション装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408832A (en) * 1965-05-19 1968-11-05 Nagataseiki Kabushikigaisha Yarn tensioning regulating apparatus for stocking machine
FR2129170A5 (en) * 1971-03-17 1972-10-27 Inst Textile De France Yarn feed device - intermittently feeding yarn to a knitting machine
GB1386488A (en) * 1972-10-21 1975-03-05 Bentley Eng Co Ltd Yarn control apparatus
FR2271162A1 (fr) * 1974-05-18 1975-12-12 Hoechst Ag
EP0108660A1 (fr) * 1982-10-08 1984-05-16 Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE Dispositif de régulation de la longueur de fil absorbée par un métier à tricoter
EP0240799A1 (fr) * 1986-03-21 1987-10-14 UNIVERSAL Maschinenfabrik Dr. Rudolf Schieber GmbH & Co. KG Procédé et dispositif pour régler la longueur et les mailles d'articles tricotés

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408832A (en) * 1965-05-19 1968-11-05 Nagataseiki Kabushikigaisha Yarn tensioning regulating apparatus for stocking machine
FR2129170A5 (en) * 1971-03-17 1972-10-27 Inst Textile De France Yarn feed device - intermittently feeding yarn to a knitting machine
GB1386488A (en) * 1972-10-21 1975-03-05 Bentley Eng Co Ltd Yarn control apparatus
FR2271162A1 (fr) * 1974-05-18 1975-12-12 Hoechst Ag
EP0108660A1 (fr) * 1982-10-08 1984-05-16 Centre Technique Industriel dit: INSTITUT TEXTILE DE FRANCE Dispositif de régulation de la longueur de fil absorbée par un métier à tricoter
EP0240799A1 (fr) * 1986-03-21 1987-10-14 UNIVERSAL Maschinenfabrik Dr. Rudolf Schieber GmbH & Co. KG Procédé et dispositif pour régler la longueur et les mailles d'articles tricotés

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2068112A2 (es) * 1992-12-21 1995-04-01 Lopez Jose Rubio Mecanismo para el tensado de hilos textiles en fibras cortas y largas.
EP0619261A1 (fr) * 1993-04-05 1994-10-12 B.T.S.R. International S.p.A. Procédé et dispositif pour surveiller et maintenir la régulation correcte de la tension d'un fil dimentant une machine textile
US5566574A (en) * 1993-04-05 1996-10-22 International Trading S.R.L. Method and device for monitoring and maintaining correct regulation of the tension of a yarn fed to a textile machine
EP0659919A1 (fr) * 1993-12-22 1995-06-28 Picanol N.V. Frein de fil de trame pour un métier à tisser
BE1007898A3 (nl) * 1993-12-22 1995-11-14 Picanol Nv Inrichting voor weefmachines.
CN103056251B (zh) * 2013-01-16 2015-12-09 建科机械（天津）股份有限公司 一种钢筋牵引机构
CN103056251A (zh) * 2013-01-16 2013-04-24 建科机械（天津）股份有限公司 一种钢筋牵引机构
CN105947790A (zh) * 2016-07-18 2016-09-21 吴江福爱梁纺织有限公司 动态补偿式并线张力系统
CN105947792A (zh) * 2016-07-18 2016-09-21 吴江福爱梁纺织有限公司 筒纱防松卷绕系统
CN106006219A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 张力恒定的并纱系统
CN106006203A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 双股并线张力平衡装置
CN106006206A (zh) * 2016-07-18 2016-10-12 吴江福爱梁纺织有限公司 恒张力并线系统
CN106006206B (zh) * 2016-07-18 2019-01-25 安徽颍上县富颍纺织有限公司 恒张力并线系统
CN110923930A (zh) * 2019-11-12 2020-03-27 台州施特自动化有限公司 一种针织设备用进线机构

Also Published As

Publication number Publication date
JPH02216249A (ja) 1990-08-29
IT1228042B (it) 1991-05-27
IT8822977A0 (it) 1988-12-16

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