EP0286050A2 - Dispositif de transfert de côté pour des métiers à tricoter rectilignes - Google Patents

Dispositif de transfert de côté pour des métiers à tricoter rectilignes Download PDF

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Publication number
EP0286050A2
EP0286050A2 EP88105390A EP88105390A EP0286050A2 EP 0286050 A2 EP0286050 A2 EP 0286050A2 EP 88105390 A EP88105390 A EP 88105390A EP 88105390 A EP88105390 A EP 88105390A EP 0286050 A2 EP0286050 A2 EP 0286050A2
Authority
EP
European Patent Office
Prior art keywords
transfer
fingers
needles
semi
needle bed
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
EP88105390A
Other languages
German (de)
English (en)
Other versions
EP0286050B1 (fr
EP0286050A3 (fr
Inventor
Giancarlo Bernardelli
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.)
COMET MARTINELLI Srl
Original Assignee
COMET MARTINELLI Srl
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 COMET MARTINELLI Srl filed Critical COMET MARTINELLI Srl
Publication of EP0286050A2 publication Critical patent/EP0286050A2/fr
Publication of EP0286050A3 publication Critical patent/EP0286050A3/fr
Application granted granted Critical
Publication of EP0286050B1 publication Critical patent/EP0286050B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/10—Flat-bed knitting machines with independently-movable needles with provision for narrowing or widening to produce fully-fashioned 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
    • D04B15/02—Loop-transfer points
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/36—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines
    • D04B15/362—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation
    • D04B15/365—Cam systems or assemblies for operating knitting instruments for flat-bed knitting machines with two needle beds in V-formation with provision for loop transfer from one needle bed to the other

Definitions

  • This invention relates to a side-transfer device for flat knitting machines, which is particularly adapted to effect the automatic narrowing of the knitted fabric being manufactured, no matter whether it is of the type involving one or both the needle beds of the machine.
  • the transfer fingers are mounted on at least one auxiliary or composite smaller needle bed arranged parallel to and above the main needle bed opposite to that whereon the transfer of the loops is to be effected.
  • the transfer fingers are controlled, in their longitudinal displacements, by the triangle cams of an auxiliary carriage which is connected mechanically to the carriage of the machine.
  • the assembly of the auxiliary composite smaller needle bed and guides whereon the respective carriage slides are mounted on a structure which, under command, is pivoted about a shaft which is parallel to said needle beds, whereby the activated fingers will temporarily disengage from the top portion of the machine needle beds, so that the auxiliary composite smaller needle bed and the involved main needle bed will be relatively translated to effect the side transfer of the knitted fabric loops.
  • the pitching movement of the auxiliary composite smaller needle bed is effected by a cam which is keyed to the carriage of the machine.
  • the auxiliary smaller needle bed comprises two aligned semi-needle beds, each adapted to serve half a needle bed and provided with respective transfer means, said device being provided with pitching means on both ends thereof, whereby this movement can occur at the end of each stroke of said carriage of the machine, both rightwards and leftwards.
  • FA and FP indicate the front and the rear needle beds, respectively, of a flat knitting machine, which are provided, preferably, with transfer needles A1 and A2 which, according to a conventional technique, permit to carry out a narrowing operation by acting only on the needles of either one of the two needle beds (for example, on the needles of the needle bed FA) regardless of whether the fabric being knitted concerns one or both said needle beds.
  • the transfer device is arranged, for example, above the needle bed FP and comprises a guide bed 1 which is parallel to said needle bed, it has substantially the same length as said needle bed and is fulcrumed, at least at the ends thereof, at 2, on supports 3 which, in turn, are secured to the frame of the machine.
  • the fulcrum 2 is parallel to 1 and to the needle bed FA.
  • the bed 5-5 ⁇ of the smaller needle beds FT-FT ⁇ is half the length of the needle bed FA of the machine and is formed with transverse equally spaced apart grooves having the same spacing or pitch as the needles of the needle beds FA-FP and slidably supporting therein the narrowing fingers 7, which are formed with a respective butt cooperatively engageable by a small carriage 8 to be discussed below, provided with cams or triangles which may be either activated or disactivated in a conventional manner in order to selectively displace said fingers longitudinally as discussed below.
  • said fingers 7 When the transfer device is in its rest position as shown in fig. 1, said fingers 7 are completely retracted in their guide seats, so as to avoid interfering with the movement of the needles in the machine needle beds. However, said fingers 7 are already oriented as required to carry out the first steps of the operating cycle pertaining to them (see below).
  • the fingers 7 present a substantially known shape and comprise a front slot 9 and a rear slot 10 deeper that the former and registering with a slot which is formed at one side of said finger, in a flat spring 11 secured in a conventional manner at its rear end to one side of said fingers.
  • the carriage 8 is supported by a structure 12 which, through grooved wheels 13, moves on a guide 14 which is secured longitudinally to the guide 1 with the interposition of spacer 15.
  • a fork-like member 16 is provided on the top and intermediate section of the structure 12 for the mechanical connection with the carriage of the machine through means permitting the device to pivot freely about the fulcrum 2.
  • each slide 4-4 ⁇ has secured thereto a support 17-17 ⁇ carry­ing a nut member co-operating with a screw member 18-18 ⁇ which is connected through a shaft 19-19 ⁇ to a reversible motor unit 20-20 ⁇ which, in turn, is rotated by a support 21-21 ⁇ so arranged as to be pivotable on the fulcrum 2.
  • pivotably and normally mounted on the ends of the fulcrum shaft 2 are respective levers 22-22 ⁇ each of which is urged upwards by a resilient means 31 and is formed with a hole 23 parallel to said shaft 2 in one side thereof.
  • the hole 23 is aligned with or slightly above a lock bolt 24 which is movable in a hole 25 formed in a body 26 keyed to the shaft 2 and mounting an electro-magnet 27 whose movable member is connected to said bolt 24 and to an opposing spring 28 which usually keeps said bolt in a retracted position within its seat 25.
  • the lowk bolt 24 is sized and arranged so that when the electro-megnet 27 is energized and the lever 22 is pivoted downwards, said lock bolt engages the hole 23 and locks said lever 22 to the shaft 2, whereby the smaller needle beds FT-FT ⁇ are pivoted about the shaft 2 (see below) and are raised.
  • a similar servo-control 27 ⁇ is provided to lock, if desired, also the lever 22 ⁇ to the shaft 2.
  • each lever 22-22 ⁇ mounts at an end thereof an idle roller 29-29 ⁇ arranged on the rectilinear path of travel of a rectilinear cam 30 associated with the main frame of the machine and shaped at both ends thereof as shown in fig. 2a, so as to operatively act on the lever 22 and on the lever 22 ⁇ during the rightward and leftward displacements of the machine carriage.
  • the device disclosed above operates as follows:
  • the auxiliary smaller needle beds FT-FT ⁇ are arranged with their inner ends at the maximum distance from each other if, obviously, the transfer is supposed to effect a decrease in the operating needles of the machine.
  • the cam 30 engages, for example, the roller 29 of the lever 22 and the latter is locked to the shaft 2 due to the programmed action of the electro-magnet 27.
  • the device is pivoted about the shaft 2 and causes the lifting movement of said auxiliary smaller needle beds FT-FT ⁇ to such an extent whereby the fingers 7 loaded with the loops B will disengage from the top portion of the machine needle beds.
  • the drive units 20-20 ⁇ are now activated and move the smaller needle beds FT-FT ⁇ longitudinally towards the centre of the machine, each by the extent required by the transfer step.
  • the machine carriage On completion of the transfer, the machine carriage starts the next operative stroke and the cam 30 disengages from the roller 29, so that the auxiliary smaller needle beds FT-FT ⁇ are returned to their initial lower position.
  • the needles A ⁇ are then lowered again, while at due time the fingers 7 are retracted into the respective auxiliary smaller needle beds FT-FT ⁇ , as shown in the sequence of figures 15 and 16.
  • the loops B remain on the needles A ⁇ , which in their descent will be closed due to the co-operation between their latches with conventional means.
  • the smaller needle beds FT-FT ⁇ are moved again to the most spaced apart position and are ready for repeating a new operative cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP88105390A 1987-04-10 1988-04-05 Dispositif de transfert de côté pour des métiers à tricoter rectilignes Expired - Lifetime EP0286050B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8712458A IT1208272B (it) 1987-04-10 1987-04-10 Apparato di trasporto laterale per le macchine rettilinee da maglieria
IT1245887 1987-04-10

Publications (3)

Publication Number Publication Date
EP0286050A2 true EP0286050A2 (fr) 1988-10-12
EP0286050A3 EP0286050A3 (fr) 1991-01-30
EP0286050B1 EP0286050B1 (fr) 1993-11-24

Family

ID=11140400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105390A Expired - Lifetime EP0286050B1 (fr) 1987-04-10 1988-04-05 Dispositif de transfert de côté pour des métiers à tricoter rectilignes

Country Status (5)

Country Link
EP (1) EP0286050B1 (fr)
JP (1) JPS63256752A (fr)
DE (1) DE3885783T2 (fr)
ES (1) ES2048168T3 (fr)
IT (1) IT1208272B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594169A1 (fr) * 1992-10-22 1994-04-27 Shima Seiki Mfg., Ltd. Métier à tricoter rectiligne avec dispositif de report
US5469717A (en) * 1992-12-22 1995-11-28 Shima Seiki Mfg., Ltd. Method for knitting a crossing pattern and an apparatus for knitting a crossing pattern in flat knitting machine
DE4437583C1 (de) * 1994-10-20 1996-03-21 Schieber Universal Maschf Flachstrickmaschine
EP0924327A3 (fr) * 1997-12-19 2000-05-31 Shima Seiki Co., Ltd. Métier à tricoter rectiligne comportant un dispositif de report à platine de report
EP0955402A3 (fr) * 1998-05-07 2000-07-12 Shima Seiki Manufacturing Limited Métier à tricoter rectiligne comportant un dispositif de transfert et procédé de transférer les mailles
DE19954477A1 (de) * 1999-11-12 2001-06-07 Stoll & Co H Verfahren und Vorrichtung zum Umhängen von Maschen auf einer Strickmaschine
DE10019987A1 (de) * 2000-04-22 2001-10-25 Stoll & Co H Verfahren zur Herstellung von Gestricken mit mehreren Strickebenen
CN107572206A (zh) * 2017-10-13 2018-01-12 江苏金龙科技股份有限公司 电脑针织横编机的机头转运装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2604677B2 (ja) * 1992-12-17 1997-04-30 株式会社島精機製作所 横編機におけるトランスファージャック
DE112024002441T5 (de) 2023-06-07 2026-03-19 Shima Seiki Mfg., Ltd. Flachstrickmaschine mit einem Umhängestößer sowie Umhängestößer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149848B (de) * 1958-03-15 1963-06-06 Schieber Universal Maschf Flachstrickmaschine mit einer Vorrichtung zum UEbertragen von Maschen
CH373849A (fr) * 1961-08-18 1963-12-15 Dubied & Cie Sa E Procédé de diminution de pièces d'articles tricotées en mailles unies, côtes ou autres genres de mailles, et machine à tricoter rectiligne pour la mise en oeuvre de ce procédé
BE793454A (fr) * 1972-07-20 1973-04-16 Abril Cullell Perfectionnements apportes aux mecanismes de transfert lateral automatique des mailles dans les machines a tricoter
DE3111193A1 (de) * 1981-03-21 1982-11-11 Hobby-Hand GmbH, 5000 Köln Vorrichtung zum umhaengen von maschen eines strickzeugs
EP0103033A1 (fr) * 1982-09-09 1984-03-21 COMET MARTINELLI S.r.l. Dispositif pour reporter des mailles d'aiguilles à des métiers rectilignes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594169A1 (fr) * 1992-10-22 1994-04-27 Shima Seiki Mfg., Ltd. Métier à tricoter rectiligne avec dispositif de report
CN1052273C (zh) * 1992-10-22 2000-05-10 株式会社岛精机制作所 有移圈装置的横机
US5469717A (en) * 1992-12-22 1995-11-28 Shima Seiki Mfg., Ltd. Method for knitting a crossing pattern and an apparatus for knitting a crossing pattern in flat knitting machine
DE4437583C1 (de) * 1994-10-20 1996-03-21 Schieber Universal Maschf Flachstrickmaschine
WO1996012840A1 (fr) * 1994-10-20 1996-05-02 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Machine a tricoter rectiligne
EP0924327A3 (fr) * 1997-12-19 2000-05-31 Shima Seiki Co., Ltd. Métier à tricoter rectiligne comportant un dispositif de report à platine de report
EP0955402A3 (fr) * 1998-05-07 2000-07-12 Shima Seiki Manufacturing Limited Métier à tricoter rectiligne comportant un dispositif de transfert et procédé de transférer les mailles
DE19954477A1 (de) * 1999-11-12 2001-06-07 Stoll & Co H Verfahren und Vorrichtung zum Umhängen von Maschen auf einer Strickmaschine
DE10019987A1 (de) * 2000-04-22 2001-10-25 Stoll & Co H Verfahren zur Herstellung von Gestricken mit mehreren Strickebenen
CN107572206A (zh) * 2017-10-13 2018-01-12 江苏金龙科技股份有限公司 电脑针织横编机的机头转运装置
CN107572206B (zh) * 2017-10-13 2023-05-26 江苏金龙科技股份有限公司 电脑针织横编机的机头转运装置

Also Published As

Publication number Publication date
IT8712458A0 (it) 1987-04-10
JPS63256752A (ja) 1988-10-24
DE3885783D1 (de) 1994-01-05
DE3885783T2 (de) 1994-06-30
EP0286050B1 (fr) 1993-11-24
IT1208272B (it) 1989-06-12
ES2048168T3 (es) 1994-03-16
EP0286050A3 (fr) 1991-01-30

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