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EP2570533A1 - Nadelbettstruktur für Flachstrickmaschinen - Google Patents

Nadelbettstruktur für Flachstrickmaschinen Download PDF

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Publication number
EP2570533A1
EP2570533A1 EP11181615A EP11181615A EP2570533A1 EP 2570533 A1 EP2570533 A1 EP 2570533A1 EP 11181615 A EP11181615 A EP 11181615A EP 11181615 A EP11181615 A EP 11181615A EP 2570533 A1 EP2570533 A1 EP 2570533A1
Authority
EP
European Patent Office
Prior art keywords
needle
needle bed
bed structure
sinker
sinkers
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Withdrawn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
EP11181615A
Other languages
English (en)
French (fr)
Inventor
Yu-Sheng Lin
Yi Chen Chen
Kai Ying Cheng
Jian-Hao Peng
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.)
Pai Lung Machinery Mill Co Ltd
Original Assignee
Pai Lung Machinery Mill Co 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 Pai Lung Machinery Mill Co Ltd filed Critical Pai Lung Machinery Mill Co Ltd
Priority to EP11181615A priority Critical patent/EP2570533A1/de
Publication of EP2570533A1 publication Critical patent/EP2570533A1/de
Withdrawn legal-status Critical Current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
    • D04B15/10—Needle beds
    • 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
    • D04B15/06—Sinkers

Definitions

  • the present invention relates to a flat knitting machine and particularly to a needle bed structure for flat knitting machines.
  • a sinker between knitting needles is employed to control a yarn threaded through a knitting needle in loop releasing, loop coupling, loop escaping and loop forming processes.
  • the sinker has a protrusive edge at one side corresponding to the knitting needle. When the sinker is rotated the protrusive edge presses the yarn picked up by the knitting needle to form a loop, thereby to form a pattern on the surface of the knitting fabric.
  • a sinker bed In order to stabilize rotation of the sinker, a sinker bed usually is provided on the needle bed.
  • European patent EP1522618 and EP1522617 disclose a sinker bed mounted onto a needle bed via a coupling seat.
  • the sinker bed has a trough corresponding to each sinker to restrict movements of the sinker without skewing.
  • the sinker bed has a control portion to control rotation of the sinker, such as that disclosed in U.S. patent 5,475,990 .
  • the sinker control portion includes a first cam and a second cam positioned next to each other. The first cam and second cam are braced by a linked movement mechanism on a base on which the sinker bed is movable horizontally.
  • the linked movement mechanism has at least one magnet to form magnetic attraction with the sinker bed.
  • the horizontal direction of movement determines whether the first cam and second cam will push the sinker on the first cam and second cam, then change the rotation angle to form a yarn loop at a different size.
  • the sinker control portion determines whether the sinker can accurately perform the rotation movement. If the surface of the sinker bed is rough, unsmooth movement of the sinker control portion could be happen, and rotation control of the sinker could be faulty.
  • the sinker bed usually is a steel bar integrally formed at a length substantially same as the needle bed.
  • One side of the sinker bed corresponding to the sinker control portion has to be formed with a very smooth surface. Precise fabrication is required that makes the resulting product very expensive.
  • the primary object of the present invention is to solve the problem of the conventional flat knitting machine equipped with a sinker bed that is costly to fabricate.
  • the present invention provides a needle bed structure for flat knitting machines that is located at two sides of a needle bed gap. It includes a plurality of parallel needle plates, a plurality of knitting needles and sinkers located between the needle plates, and a sinker control portion movable in parallel with the arranged direction of the sinkers.
  • the sinker control portion includes a switching portion to perform a switching movement according to the moving direction and at least one control cam driven by the switching portion to push the sinkers to rotate in the direction of the needle bed gap during the switching movement. It also includes at least one needle pressing board on the needle plates to restrict vertical movement of the knitting needles.
  • the switching portion has a magnetic attracting portion corresponding to the needle pressing board to form magnetic attraction therewith. A spacer is provided between the needle plates to prevent horizontal movement of the sinker.
  • the needle plate has a dovetail groove to hold the needle pressing board.
  • the spacer and knitting needle are vertically positioned between the needle plate and sinker.
  • a yarn guiding plate is provided between the knitting needle and sinker.
  • the sinker has an anchor portion pivotally coupled with a rotation shaft in parallel with the positioned direction of the sinkers.
  • the needle plate has two openings threaded through by a first holding line and a second holding line.
  • the spacer includes a first aperture threaded through by the first holding line and a first positioning notch threaded through by the second holding line.
  • the first aperture is a slotted hole.
  • the first position notch has a first retreated recess.
  • the yarn guiding plate includes a second aperture threaded through by the first holding line and a second positioning notch threaded through by the second holding line.
  • the second aperture is a slotted hole.
  • the second position notch has a second retreated recess.
  • the yarn guiding plate includes a holding portion to hold the knitting needle.
  • the needle bed structure of the invention provides features as follow:
  • a flat knitting machine 10 adopted the invention includes two needle beds 20 located at two sides of a needle bed gap 11 opposing each other like a mountain shape.
  • Each needle bed 20 has a carrier 30 movable horizontally and reciprocally relative to the needle bed 20.
  • the carrier 30 has a sinker control portion 31 located thereon corresponding to the needle bed 20.
  • the needle bed 20 on each side has a plurality of parallel ditches 21 each holding a needle plate 22.
  • a needle trough 23 is formed between two neighboring needle plates 22.
  • the needle trough 23 holds therein a knitting needle 24, a sinker 25, a spacer 26 and a yarn guiding plate 27.
  • the knitting needle 24 is movable longitudinally back and forth in the needle trough 23, and can move towards the needle bed gap 11 to pick up a yarn.
  • the sinker 25 includes a downward pressing boss 251, a control boss 252 and an anchor portion 253.
  • the sinker 25 is pivotally coupled on a rotation shaft 41 through the anchor portion 253.
  • the rotation shaft 41 is held in a groove 201 formed on the needle bed 20 parallel with the positioned direction of the sinker 25.
  • the sinker control portion 31 includes a switching portion 311 located on the carrier 30 and at least one control cam 312 driven by the switching portion 311.
  • the control boss 252 is held in the control cam 312.
  • the control cam 312 can be driven by the switching portion 311 and moved towards the needle bed gap 11 to drive the sinkers 25 rotation.
  • the invention also provides at least one needle pressing board 28 on the needle plates 22 to restrict vertical movement of the knitting needle 24 so that it is retained in the needle trough 23.
  • the needle pressing board 28 may consist of a plurality of segments coupled together.
  • the needle plate 22 has a dovetail groove 221 to securely hold the needle pressing board 28.
  • the switching portion 311 has a magnetic attracting portion 313 corresponding to the needle pressing board 28 to form magnetic attraction therewith.
  • the switching portion 311 determines according to the moving direction of the sinker control portion 31 whether the control 312 to push the sinker 25 to rotate towards the needle bed gap 23.
  • the needle trough 23 between two needle plates 22 holds a knitting needle 24, a sinker 25, a spacer 26 and a yarn guiding plate 27.
  • the yarn guiding plate 27 has a holding portion 222 to hold the knitting needle 24.
  • the sinker 25 is located between the needle plate 22 and knitting needle 24.
  • the yarn guiding plate 27 is located between the sicker 25 and knitting needle 24.
  • the sinker 25 and yarn guiding plate 27 are located higher than the knitting needle 24.
  • the spacer 26 is located between the yarn guiding plate 27 and needle plate 22 to prevent horizontal movement of the sinker 25 when it rotates towards the needle bed gap 11.
  • the spacer 26 is formed at a thickness same as the knitting needle 24, and both are vertically positioned next to each other. Thereby the upper portion of the sinker 25 can move only between the spacer 26 and needle plate 22 to form steady rotation thereof.
  • the needle plate 22 has two openings 223 threaded through respectively by a first holding line 42 and a second holding line 43 as shown in FIGS. 4 and 5 so that each needle plate 22 can be held securely in a serial string and fixedly positioned on the needle bed 20.
  • the spacer 26 and yarn guiding plate 27 In order to keep the spacer 26 and yarn guiding plate 27 in each needle trough 23 at desired positions and to maintain steady movements of the knitting needle 24 and sinker 25 during knitting operation of the flat knitting machine 10, the spacer 26 and yarn guiding plate 27 have respectively an aperture 261 and 271 threaded through by the first holding line 42, and a holding notch 262 and 272 threaded through by the second holding line 43.
  • the holding notches 262 and 272 have respectively a retreated recess 263 and 273 to hold the second holding line 43.
  • the apertures 261 and 271 may be formed in a slotted hole with an allowance vertical or horizontal to the needle trough 23.
  • the needle bed structure of the invention provides the needle pressing board on the needle plates and a spacer between the needle plates to replace the sinker bed adopted in the conventional techniques for stabilizing rotation of the sinker and switching of the sinker control portion.
  • the coupling seat to bridge the sinker bed and needle plates can also be dispensed with. Hence production cost of the flat knitting machine can be reduced. It provides a significant improvement over the conventional techniques.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP11181615A 2011-09-16 2011-09-16 Nadelbettstruktur für Flachstrickmaschinen Withdrawn EP2570533A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11181615A EP2570533A1 (de) 2011-09-16 2011-09-16 Nadelbettstruktur für Flachstrickmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11181615A EP2570533A1 (de) 2011-09-16 2011-09-16 Nadelbettstruktur für Flachstrickmaschinen

Publications (1)

Publication Number Publication Date
EP2570533A1 true EP2570533A1 (de) 2013-03-20

Family

ID=44785404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11181615A Withdrawn EP2570533A1 (de) 2011-09-16 2011-09-16 Nadelbettstruktur für Flachstrickmaschinen

Country Status (1)

Country Link
EP (1) EP2570533A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544083A (zh) * 2014-10-27 2016-05-04 雨果科恩及利伯斯两合公司 纺织机用针或沉降片及其制造方法
CN108179537A (zh) * 2018-03-21 2018-06-19 浙江丰帆数控机械有限公司 一种运行稳定的针织横机
CN108360132A (zh) * 2018-04-25 2018-08-03 汕头市连兴实业有限公司 一种压虚线机构
CN111648016A (zh) * 2020-04-30 2020-09-11 武汉纺织大学 一种混合式磁悬浮织针驱动装置及其控制方法
CN111733514A (zh) * 2020-07-20 2020-10-02 孙荣飞 可动挡纱片和具有该挡纱片的针织装置及编织方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713948A (en) * 1986-03-21 1987-12-22 H. Stoll Gmbh & Co. Double bed flat knitting machine with sinkers located between the needles
EP0602622A1 (de) * 1992-12-15 1994-06-22 SHIMA SEIKI MFG., Ltd. Platinenvorrichtung für Flachstrickmaschinen
WO1995007382A2 (en) * 1993-09-06 1995-03-16 E.M.M. S.R.L. Device for holding down the stitches being formed in a flat knitting machine
US5475990A (en) 1993-11-05 1995-12-19 S. Stoll Gmbh & Co. Sinker control actuator for flat knitting machine
EP1522617A1 (de) 2003-10-07 2005-04-13 H. Stoll GmbH & Co. Flachstrickmaschine mit mindestens einem Nadelbett
EP1522618A1 (de) 2003-10-07 2005-04-13 H. Stoll GmbH & Co. Platine einer Flachstrickmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4713948A (en) * 1986-03-21 1987-12-22 H. Stoll Gmbh & Co. Double bed flat knitting machine with sinkers located between the needles
EP0602622A1 (de) * 1992-12-15 1994-06-22 SHIMA SEIKI MFG., Ltd. Platinenvorrichtung für Flachstrickmaschinen
WO1995007382A2 (en) * 1993-09-06 1995-03-16 E.M.M. S.R.L. Device for holding down the stitches being formed in a flat knitting machine
US5475990A (en) 1993-11-05 1995-12-19 S. Stoll Gmbh & Co. Sinker control actuator for flat knitting machine
EP1522617A1 (de) 2003-10-07 2005-04-13 H. Stoll GmbH & Co. Flachstrickmaschine mit mindestens einem Nadelbett
EP1522618A1 (de) 2003-10-07 2005-04-13 H. Stoll GmbH & Co. Platine einer Flachstrickmaschine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544083A (zh) * 2014-10-27 2016-05-04 雨果科恩及利伯斯两合公司 纺织机用针或沉降片及其制造方法
CN105544083B (zh) * 2014-10-27 2019-04-09 雨果科恩及利伯斯两合公司 纺织机用针或沉降片及其制造方法
CN108179537A (zh) * 2018-03-21 2018-06-19 浙江丰帆数控机械有限公司 一种运行稳定的针织横机
CN108360132A (zh) * 2018-04-25 2018-08-03 汕头市连兴实业有限公司 一种压虚线机构
CN108360132B (zh) * 2018-04-25 2023-12-22 汕头市连兴实业有限公司 一种压虚线机构
CN111648016A (zh) * 2020-04-30 2020-09-11 武汉纺织大学 一种混合式磁悬浮织针驱动装置及其控制方法
CN111648016B (zh) * 2020-04-30 2021-08-24 武汉纺织大学 一种混合式磁悬浮织针驱动装置及其控制方法
CN111733514A (zh) * 2020-07-20 2020-10-02 孙荣飞 可动挡纱片和具有该挡纱片的针织装置及编织方法

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