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EP0325551A1 - Vorrichtung zum Positionieren eines Fadens bezüglich einer Nadel an einer Strickmaschine - Google Patents

Vorrichtung zum Positionieren eines Fadens bezüglich einer Nadel an einer Strickmaschine Download PDF

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Publication number
EP0325551A1
EP0325551A1 EP89500005A EP89500005A EP0325551A1 EP 0325551 A1 EP0325551 A1 EP 0325551A1 EP 89500005 A EP89500005 A EP 89500005A EP 89500005 A EP89500005 A EP 89500005A EP 0325551 A1 EP0325551 A1 EP 0325551A1
Authority
EP
European Patent Office
Prior art keywords
sinker
edge
trick
needle
butt
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
EP89500005A
Other languages
English (en)
French (fr)
Other versions
EP0325551B1 (de
Inventor
José Maria Dalmau Güell
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.)
Jumberca SA
Original Assignee
Jumberca SA
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 Jumberca SA filed Critical Jumberca SA
Publication of EP0325551A1 publication Critical patent/EP0325551A1/de
Application granted granted Critical
Publication of EP0325551B1 publication Critical patent/EP0325551B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/06—Circular knitting machines with independently-movable needles with needle cylinder and dial for ribbed goods
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/10—Circular knitting machines with independently-movable needles with two needle cylinders for purl work or for Links-Links loop formation

Definitions

  • the invention relates to a device for positioning a yarn relative to a needle in a knitting machine, the machine comprising: a lower needle bed provided with axial tricks, having a bottom and an upper edge; a needle housed in each trick and comprising a shank, a hook-shaped head and a rocking latch; a jack housed in each trick, aligned with the needle of the same trick and provided with a first butt; a sinker housed in each trick and capable of lengthwise movement in the trick, generally juxtaposed to the needle and the jack and comprising a second butt and an upper portion having a rear edge facing the needle bed and a front portion, said upper portion being terminated at the upper end thereof by at least one bevel extending down­wardly from the front edge towards the rear edge; a first series of camplates, facing the lower needle bed and being movable relative to said needle bed, each camplate comprising a plurality of cams defining first camtracks for said first butt and a second camtrack which is traverse
  • the upper needle bed means the upper cylinder when referring to links-links type machines and means the disc when referring to disc and cylinder machines.
  • the latch When a needle with one or more tuck stitches on its shaft is drawn down, the latch may easily pass under one of them and knit, whereby it would not tuck.
  • Said aspect is the leading of the knitted fabric towards the inside of the lower cylinder through the passage between the facing edges of the upper needle bed and the lower needle bed.
  • a device of the abovementioned type characterised in that said sinker is provided with: a generally triangular projection located on said upper portion and extending from said rear edges; and a third butt extending from the front edge of the sinker, there being a thrust cam which during the lengthwise upward movements of the sinker engages the said third butt and pushes it towards the bottom of the trick whereby the sinker may rock between a first lower position in which said projection engages the bottom of said trick, causing the sinker to be inclined relative to said bottom and a second upward position in which said projection extends above the upper edge of the trick and the rear edge of the sinker is engaged with the said bottom of the trick.
  • Figure 1 shows a needle bed formed by a lower cylinder 2, shown partly in section through one of the tricks 4 thereof, said tricks being disposed successively around said cylinder.
  • a needle not shown
  • a jack also not shown
  • said jack having first butt.
  • rockable jack not ahown
  • the trick 4 has a bottom 5 and the cylinder 2 has an upper edge 76 to be referred to hereinafter.
  • An upper cylinder not shown, has a lower edge which defines, with the upper edge 76, a passage of generally constant width, through which the knitted fabric passes to the inside of the cylinder 2.
  • Figure 3 illustrates members similar to those described with reference to Figure 1, although for a disc and cylinder machine, there being seen therefore an upper needle bed formed by a needle disc 7 having a peripheral edge 78. There is likewise defined between the edges 76 and 78 the passage 80, referred to above.
  • the trick 4 there has been drawn only one sinker 16 which is longitudinally movable within the trick.
  • the sinker 16 is generally juxtaposed to the needle and jack, although the movements of the sinker are independent of those of the needle and jack.
  • Each sinker 16 is provided with a second butt 18 and the upper portion 20 of the sinker is seen to have ( Figure 2) a rear edge 22 facing the bottom 5 of the trick 4, and a front edge 24.
  • the upper portion is terminated, at the top end thereof, with a first bevel 26 extending downwardly from the upper end 27 of the front edge 24 towards the rear edge 22.
  • the sinker 16 is also provided with a generally triangular shaped projection 100.
  • the foregoing term includes the case in which the outstanding apex of the triangle is slightly flattened, to give the shape of a trapezium having a shorter parallel side of limited length.
  • the projection 100 is at a lower level than the first bevel 26, whereby the upper and lower edges 102 and 104 extend from said rear edge 22.
  • This embodiment is complemented by a recess 29, which is associated with sensing means, beyond the scope of the present invention.
  • the recess 29 avoids an interference between the sinker and the sensing means, there being instead contact between the sinker and the sensor when the former is in an incorrect position.
  • the described embodiment of the projection is particularly appropriate for machines having a lower cylinder 2 and an upper cylinder.
  • the projection 100 is the headpiece of the sinker 16 and the highest extremity of the upper edge 106 of the projection 100 coincides with the end 27 of the front edge 24.
  • the lower edge 108 of the projection extends from the rear edge 22 of the sinker.
  • the sinker 16 is provided with a third butt 110 extending from the front edge 24.
  • the transition of the upper end of said butt 110 towards the front edge 24 is formed by a sloping portion 112.
  • the butt 110 is engageable by a thrust cam 114 the front edge 116 of which does not reach the front edge 22 but does reach the butt 110.
  • the second sinker butt 18 passes through second camtracks. Said path causes the sinker 16 to move lengthwise upwardly and downwardly.
  • the tuck stitches are adequately pressed against the shank of the needle to prevent the needle latch from passing through the loop on the needle being drawn down.
  • the knitted fabric even with many consecutive tuck stitches, is taken up by the cloth beam without having to have recourse to excessive drawing tensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP19890500005 1988-01-13 1989-01-09 Vorrichtung zum Positionieren eines Fadens bezüglich einer Nadel an einer Strickmaschine Expired EP0325551B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES8800074A ES2006045A6 (es) 1988-01-13 1988-01-13 Dispositivo de posicionamiento de hilo en relacion a una aguja de una maquina de genero de punto.
ES8800074 1988-01-13

Publications (2)

Publication Number Publication Date
EP0325551A1 true EP0325551A1 (de) 1989-07-26
EP0325551B1 EP0325551B1 (de) 1991-12-27

Family

ID=8254422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890500005 Expired EP0325551B1 (de) 1988-01-13 1989-01-09 Vorrichtung zum Positionieren eines Fadens bezüglich einer Nadel an einer Strickmaschine

Country Status (4)

Country Link
EP (1) EP0325551B1 (de)
JP (1) JPH01250451A (de)
DE (1) DE68900583D1 (de)
ES (1) ES2006045A6 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180993A (en) * 1976-11-01 1980-01-01 Morris Philip Sinker-needle motion reducer
EP0059919A1 (de) * 1981-03-03 1982-09-15 Memminger-Iro Gmbh Strickmaschine
EP0238797A1 (de) * 1986-03-21 1987-09-30 H. Stoll GmbH & Co. Zweibettige Flachstrickmaschine mit zwischen den Nadeln angeordneten Platinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180993A (en) * 1976-11-01 1980-01-01 Morris Philip Sinker-needle motion reducer
EP0059919A1 (de) * 1981-03-03 1982-09-15 Memminger-Iro Gmbh Strickmaschine
EP0238797A1 (de) * 1986-03-21 1987-09-30 H. Stoll GmbH & Co. Zweibettige Flachstrickmaschine mit zwischen den Nadeln angeordneten Platinen

Also Published As

Publication number Publication date
EP0325551B1 (de) 1991-12-27
ES2006045A6 (es) 1989-04-01
DE68900583D1 (de) 1992-02-06
JPH01250451A (ja) 1989-10-05

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