WO1981000868A1 - Metier a tricoter a lit rectiligne et systemes de transfert pour un tel metier - Google Patents

Metier a tricoter a lit rectiligne et systemes de transfert pour un tel metier Download PDF

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Publication number
WO1981000868A1
WO1981000868A1 PCT/GB1980/000147 GB8000147W WO8100868A1 WO 1981000868 A1 WO1981000868 A1 WO 1981000868A1 GB 8000147 W GB8000147 W GB 8000147W WO 8100868 A1 WO8100868 A1 WO 8100868A1
Authority
WO
WIPO (PCT)
Prior art keywords
cam
transfer
needle
butts
loop
Prior art date
Application number
PCT/GB1980/000147
Other languages
English (en)
Inventor
J Trautner
Original Assignee
Bentley Alemannia Ltd
J Trautner
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 Bentley Alemannia Ltd, J Trautner filed Critical Bentley Alemannia Ltd
Priority to DE8080901729T priority Critical patent/DE3067454D1/de
Publication of WO1981000868A1 publication Critical patent/WO1981000868A1/fr

Links

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
    • D04B15/32—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

  • the invention relates to flat bed knitting machines particularly of the V+bed flat type.
  • the invention resides in an improved transfer system for such machines.
  • the invention is applicable to V-bed flat type knitting machines having different arrangemenis of knitting and transfer systems including arrangements with two adjacent knitting systems with a transfer system to either side thereof as well as arrangements with combined knitting/transfer systems.
  • the latches of the needles to receive loops must be opened so that the loops can enter the hooks of those yarns.
  • the opening has been effected by mechanical latch openers which permit a compact cam system or by using the yarn of the loop over the spreader of the needle about to deliver a loop to prise the latch apart from the hook prior to the hook entering the spreader.
  • yarns for opening the latches has involved transferring systems having a substantial dimension in the direction of carriage traverse (see DT-Patent Specification 2,443,231) in which a relatively low permanent transfer peak is located midway between a pair of high-permanent loop spreading peaks.
  • the invention is based on the surprisingly good transfer obtained using the yarn on the delivering needle for latch opening on a transfer system having a particular, compact configuration.
  • a transfe system having a loop delivering or transfer cam defining a loop delivery track for needle operating butts at the top thereof and permitting a needle operating butt to follow a loop reception track
  • the cam being arranged so as to initially lift needle operating butts to a spreading height, lower the butts, guide them by a flat to holding the butts in position briefly for transfer whilsta loop reception cam is arranged to urge the receiving needle 2o upward as the oppositely arranged delivery needle is held in position on the flat.
  • the transfer operation is preferably effected with ai a retractable cam.
  • a pair of these cams may be arranged symmetrically together with the flats on eit
  • each cam being in the form of an elongate cam lying against the outside upwardly inclined sides of a central part of the transfer cam.
  • the cam acts to control the height to which needle operating butts are lifted on loop
  • the flats can be formed on the central part and enable reliable latch opening to be performed with the leading needle height control cam retracted or, preferably,projected.
  • the needle operating butts may be selected to pass above or below the transfer cam as a result of the action of jacks lying below the needles in tricks. It has been found that the effect of the flats on reliable loop transfer is particularly advantageous where loop reception cams are arranged to engage butts of the jacks to lift the needles indirectly for loop reception. Even though the receiving needles are thus controlled indirectly, reliable latch opening can be achieved.
  • the central part of the transfer cam may itself be partly retractable to give a knitting action.
  • the retractable needle height control cams advantageously cooperate with other bolt cams which prevent the passage of needle opening butts to above the needle height control cams.
  • Figure 1 shows an inside view of a loop transferring cam system of a knitting machine according to the inventio ;
  • FIG. 1 shows, different stages of operation of the system of Figure 1;
  • Figure 3A to C show successive stages of operation during loop transfer.
  • a knitting machine has a pair of needle beds with needles having butts as indicated at 2.
  • a cam carriage 4 is fitted over the needle beds to cause the needles in the respective beds to perform synchronised knitting and loop transferring movements.
  • the cam carriage 4 has identical arrangements for the front and rear needle beds each arrangement includes a pair of knitting cam systems 6 and' a pair of loop transferring cam systems 8, one to either side of the pair of knitting cam systems 6.
  • Figure 1 only shows one of the loop transferring cam systems and part of the adjacent knitting cam systems for clarity. The other loop transferring cam systems are arranged analogously.
  • Each transferring cam system is arranged to control a rocking jack 42 (as shown sideways) and the needles.
  • the cam system comprises a needle raising cam means 10 acting on needle butts 2 for delivering loops to receiving needles, a lowering cam 12 midway along the length of the cam means 10 and lowering cam means 14 to the side of the cam means 10.
  • the needle butts will be lowered by the cam 12 to relax the loops and permit a better insertio of the loop receiving needles and raised by the cam means 10.
  • Flats are provided at 11 between a central depression in the cam means 10 and the upwardly inclin sides of the cam means 10.
  • the cam means 10 has a pair of recesses 24 on its side near the midway position 16 into which lifting, height control cams 18 may project. With the cam 18 projecte the needle butts are raised to a high level at 20; wit the cam 18 retracted in a leading position, the cam means 10 will only raise needle butts 2 to a low leve initially, followed by a lift to an intermediate level just before the midway position.
  • the cam means 10 hav also a pair of recesses 26 to permit movement of the needle butts 2 for receiving loops.
  • a guard cam 27 which separates a low non-knit track and a track for butts of permanently de-activated needles.
  • cam means 10 Below the guard cam 27 -lies -an area with cams for operating on the jacks 42 to raise, rock and lower them. Above a fixed lower cam 40 are mounted a pair of loop reception cams 28 which act on raising butts 46 of the jacks 42 to cause the needle butts 2 to be lifted in the recesses 26. It is to be noted that the jacks will be raised in a single smooth movement. A pair of transfer selection cams 3o lie one on either side of the cams 28 and act on the butts 46 to lift the needle butts 2 onto the sides of the raising . cam means 10.
  • An actuator system 32 is associated with the transferring cam system 8 as well as the knitting cam system 8 and incorporates six solenoids for operating rockers 34 which shift front edges into and out of the paths of pattern butts 50 of the jacks 42 in accordance with pattern requirements.
  • a sideways shiftable presser cam 36 acts on rocking butts 51 of the jacks 42 to ensure that the pattern butts 50 are offered up to the rockers 34 for selection.
  • Cams such as 38 act on lowering butts 48 of the jacks 42 and lower the jacks 42 until, at a predetermined pre-selection level, lobes 44 emerge from the tricks in the needle beds and the presser cams 36 can rock any jacks previously rocked by an actuator to permit a fresh selection to be made.
  • the cam 39 has a reduced height to ensure that the jacks 42 are lowered without the lobes 44 emerging from the tricks for reasons which will be explained.
  • the lifting height control cams 18 can be projected in the trailing position and retracted in the leading position by means of a slide 52 which resets the cams 18 at the end of a traverse.
  • the cams 18 may be operated by the slide and a solenoid controlled mechanism as will now be described for the other retractable cams so that the cams 18 can be retracted or projected in the leading position depending on requirements.
  • the cams 28 and 30 are projected in accordance with electronic instructions which are passed to solenoids.
  • the leading transfer selection cam 30 over one needle bed is projected (for the topmost needle bed as seen in Figure 2) whilst the trailing loop reception cam 28 is projected towards the other needle bed (i.e. the lowermost needle bed as seen in Figure 2)
  • the actuator systems 32 on both parts of the cam carriage 4 are then selectively operated in the same manner to rock mutually aligned rocking jacks 42.
  • the raising butts 42 are moved out of the needle bed tricks and engage the cam 40 over the top and bottom needle beds.
  • the butts 42 of non- -selected cams pass under the cam 40 and the associated needles stay down and are not considered further.
  • the projected butts 46 rise on the cam 40 and are secured in the rocked position by the lobes 44. On th top bed the butt 46 slides up the transfer selection cam 30 at stage A shown in Figure 2 and in so doing lifts the needle butt 2 from a low track to place on
  • the needle butts 2 which rise up the cam means 10, move into the leading recess 24 where the height control cam 18 is retracted at stage C, past the midway position 10 and rise up to the flat 11 at stage D, whilst spreading the loop over a spreader on the needle.
  • the butts 42 are held in position by the flats 11 on the cam means 10 until stage E and the cam 12 and are then lowered at stage F.
  • the butts 2 are lifted to the trailing flats 11 holding the delivering needle still between stages G and H.
  • the butts 2 are then finally lifted to full transfer height at stage I.
  • the needles are then lowered to deliver the loop up to stage K. Between stages A to G, the receiving needle is stationary subsequent to its initial selection.
  • the jack butt 46 commences to lift and the needle is lifted in a continuous motion, whilst the delivering needle is held still between stages G and H. During this period the receiving needle hooks slip to the side of the yarn held on the spreader. The yarn penetrates under the latch and opens it. Thus when the receiving needle reaches the apex of the cam 28 at stage I, the latch of the receiving needle is open. The delivering needle can now place its spread loop in the open hook of the receiving needle.
  • jacks 42 rock and lift them on the cam 40 without any of the cams 28 or 30 being projected.
  • the jacks 42 are simply left by the transfer system in a rocked attitude.
  • a cam 30 and a cam 28 can be projected to effect' a transfer between the needle beds with the transfer system in a leading position. Only one actuator system 32 does control leading and trailing selection and the number of traverse in which no knitting takes place can be reduced. No mechanical latch openers need to be used and the transfer system is compactly constructed.
  • the loop transferring cam system of Figure 1 can be modified as shown in dotted lines to serve for the purpose of transferring and/or knitting.
  • the cam means 10 is then subdivided in a fixed lo ⁇ er part 64 and a partly and wholly retractable upper part 66.
  • both cams 18 are projected to control the needle butts 2.
  • Stitch cams 68 can be adjusted as shown by the arrows to vary the stitch length.
  • blocking cams 70 may be inserted.
  • the needles, in both needle beds are initially in a low position ( Figure 3A) .
  • the delivering needle is then lifted by the transfer cam 10, rises on the leading cam 18 to spread the loop to be delivered firmly.
  • the needle is then lowered by the cam 12 (Figure 3B) to briefly relax the loop and take some tension of the spreader 80.
  • the needle is then briefly kept level on the trailing flat 11 whilst the receiving needle is lifted ( Figure 3C) to penetrate the spreader 80.
  • the receiving needle is shown outside the spreader (80).
  • the lifting onto the flat 11 locates the spread loop in an angle formed in the needle stem and the flat 11 is arranged such that the receiving hook just passes below the loop located in the angle or just brushes it aside to pass under the latch if necessary and open it. Because the trailing cam 18 is withdrawn, the delivering needle remains at this level until the loop has been securely received by the hook, if necessary after moving clear of the trailing flat 11.
  • the retractable cams 18 thus can be used to give good loop spreading in a particular cam area in one direction of carriage traverse, which same area also serves to provide secure latch opening by loops in the opposite direction of carriage traverse. Reliable transfer can be achieved without using mechanical latch openers by a compact cam arrangement having two peaks only.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

Un systeme de transfert pour un metier a tricoter a lit rectiligne utilise une came de transfert de boucles (10) definissant une voie d'amenee de boucles pour des extremites d'aiguilles de travail au sommet et permettre a une extremite d'aiguille de travail de suivre une voie de reception de boucles se trouvant en dessous, la came (10) etant disposee de maniere a lever au depart les extremites d'aiguilles de travail a une hauteur d'etalement, a baisser celles-ci, les guider par un plat (11) pour tenir les extremites en position pendant une courte duree pour le transfert tandis qu'une came de reception de boucles (28) est prevue pour pousser l'aiguille de reception vers le haut en meme temps que l'aiguille opposee d'amenee est maintenue en position sur le plat pour ouvrir les verrous des aiguilles vides au moyen de la boucle. Un tel transfert peut s'effectuer dans un espace reduit en fonctionnant dans les deux directions du deplacement de la came en prevoyant une paire de cames retractables (18) au sommet de la came de transfert (10) et des plats (11) disposes symetriquement pour effectuer le transfert dans chaque direction du mouvement alternatif entre ces cames retractables (18).
PCT/GB1980/000147 1979-10-01 1980-09-25 Metier a tricoter a lit rectiligne et systemes de transfert pour un tel metier WO1981000868A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080901729T DE3067454D1 (en) 1979-10-01 1980-09-25 Flat bed knitting machine and transfer systems therefor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7933902 1979-10-01
GB7933902 1979-10-01

Publications (1)

Publication Number Publication Date
WO1981000868A1 true WO1981000868A1 (fr) 1981-04-02

Family

ID=10508191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1980/000147 WO1981000868A1 (fr) 1979-10-01 1980-09-25 Metier a tricoter a lit rectiligne et systemes de transfert pour un tel metier

Country Status (6)

Country Link
EP (1) EP0042838B1 (fr)
JP (1) JPS6410617B2 (fr)
DE (1) DE3067454D1 (fr)
ES (1) ES8200152A1 (fr)
IT (1) IT1132901B (fr)
WO (1) WO1981000868A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527657A1 (fr) * 1982-05-27 1983-12-02 Schieber Universal Maschf Platine de tricotage et de guidage pour machines a tricoter rectilignes a lit en v a aiguilles a coulisse
DE3225345A1 (de) * 1982-07-07 1984-01-12 Sulzer Morat Gmbh, 7024 Filderstadt Strickmaschine
FR2588891A1 (fr) * 1985-10-23 1987-04-24 Stoll H Gmbh & Co Systeme de separateurs pour machine a tricoter rectiligne
EP0236172A1 (fr) * 1986-02-25 1987-09-09 José Abril Cullell Système de platines pour la commande des éléments de tricotage dans les métiers à tricoter rectiligne
GB2193977B (en) * 1986-08-15 1990-01-04 Textima Veb K Cam unit for a v-type flat bed knitting machine
CN101122061B (zh) * 2007-09-14 2010-05-19 陈红岩 编织三角系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0571715U (ja) * 1992-02-28 1993-09-28 日本電気ホームエレクトロニクス株式会社 振動ジャイロ
CN101845705A (zh) * 2010-04-28 2010-09-29 常熟市金龙机械有限公司 电脑针织横编机的成圈机构
CN102534988B (zh) * 2011-09-20 2014-08-06 常熟市国光机械有限公司 电脑针织横机的机头三角系统
CN102605527B (zh) * 2012-03-15 2014-05-28 东华大学 一种葡萄状立体花形的编织结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1079264B (de) * 1956-02-23 1960-04-07 Universal Maschinenfabrik G M Schloss fuer Flachstrickmaschinen mit Maschen-Umhaengevorrichtung
FR1348099A (fr) * 1963-02-08 1964-01-04 Stoll & Co H Procédé et serrure double pour la fabrication de tricots de largeur variable sur machine à tricoter rectiligne
FR2015353A1 (fr) * 1968-08-09 1970-04-24 Stoll & Co H
DE2014808A1 (fr) * 1969-04-03 1970-10-15
DE2021742A1 (de) * 1970-05-04 1971-11-18 Stoll & Co H Flachstrickmaschine
GB2038887A (en) * 1978-10-03 1980-07-30 Bentley Alemannia Ltd Flat Bed Knitting Machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851051B2 (ja) * 1978-05-04 1983-11-14 株式会社島アイデア・センタ− 横編機の編成カム装置
JPS5851052B2 (ja) * 1978-05-25 1983-11-14 株式会社島アイデア・センタ− 横編機の編成カム装置
DE2939639A1 (de) * 1978-10-03 1980-04-24 Bentley Alemannia Ltd Flachstrickmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1079264B (de) * 1956-02-23 1960-04-07 Universal Maschinenfabrik G M Schloss fuer Flachstrickmaschinen mit Maschen-Umhaengevorrichtung
FR1348099A (fr) * 1963-02-08 1964-01-04 Stoll & Co H Procédé et serrure double pour la fabrication de tricots de largeur variable sur machine à tricoter rectiligne
FR2015353A1 (fr) * 1968-08-09 1970-04-24 Stoll & Co H
DE2014808A1 (fr) * 1969-04-03 1970-10-15
DE2021742A1 (de) * 1970-05-04 1971-11-18 Stoll & Co H Flachstrickmaschine
GB2038887A (en) * 1978-10-03 1980-07-30 Bentley Alemannia Ltd Flat Bed Knitting Machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527657A1 (fr) * 1982-05-27 1983-12-02 Schieber Universal Maschf Platine de tricotage et de guidage pour machines a tricoter rectilignes a lit en v a aiguilles a coulisse
DE3225345A1 (de) * 1982-07-07 1984-01-12 Sulzer Morat Gmbh, 7024 Filderstadt Strickmaschine
FR2588891A1 (fr) * 1985-10-23 1987-04-24 Stoll H Gmbh & Co Systeme de separateurs pour machine a tricoter rectiligne
EP0236172A1 (fr) * 1986-02-25 1987-09-09 José Abril Cullell Système de platines pour la commande des éléments de tricotage dans les métiers à tricoter rectiligne
GB2193977B (en) * 1986-08-15 1990-01-04 Textima Veb K Cam unit for a v-type flat bed knitting machine
CN101122061B (zh) * 2007-09-14 2010-05-19 陈红岩 编织三角系统

Also Published As

Publication number Publication date
ES496068A0 (es) 1981-10-16
IT1132901B (it) 1986-07-09
DE3067454D1 (en) 1984-05-17
EP0042838A1 (fr) 1982-01-06
JPS56501248A (fr) 1981-09-03
ES8200152A1 (es) 1981-10-16
EP0042838B1 (fr) 1984-04-11
IT8025026A0 (it) 1980-09-30
JPS6410617B2 (fr) 1989-02-22

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