US3605450A - Cam system for automatic jacquard flat knitting machines - Google Patents

Cam system for automatic jacquard flat knitting machines Download PDF

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Publication number
US3605450A
US3605450A US809825A US3605450DA US3605450A US 3605450 A US3605450 A US 3605450A US 809825 A US809825 A US 809825A US 3605450D A US3605450D A US 3605450DA US 3605450 A US3605450 A US 3605450A
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United States
Prior art keywords
cams
jacks
main
auxiliary
cam
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.)
Expired - Lifetime
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US809825A
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English (en)
Inventor
Ernst Goller
Karl Essig
Helmut Mutschler
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H Stoll GmbH and Co KG
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H Stoll GmbH and Co KG
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Publication date
Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
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Publication of US3605450A publication Critical patent/US3605450A/en
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    • 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
    • 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 needles, the main jacks and the auxiliary jacks are guided by a needle guide plate, a main jack guide plate and an auxiliary jack guide plate, respectively.
  • Guide cams for the transfer and receiving of stitches are located at each end of the main jack guide plate; the advancing cams of the main jack guide plate are constructed in two halves for stitch and loop formation; and the auxiliary jack guide plate includes at each end thereof run-in cams which permit additional selection of main jacks through the medium of the auxiliary jacks.
  • This invention relates to Jacquard fiat knitting machines of the kind comprising opposed needle beds and a carriage having, in association with each bed, a system of double looks including a transfer mechanism whereby needles in one bed are enabled to transfer stitches to needles in the opposed bed, and vice versa.
  • this invention relates to an improved arrangement of needle and jack guide cams for such a machine.
  • This purpose is achieved in accordance with the present invention by providing guide cams for the transfer and receiving of stitches which are associated with a main jack guide plate section at each of the opposite ends of the assembly.
  • the advancing cams of the main jack guide plate sections are divided, for stitch and loop formation, such that the said advancing cams are adapted to effect additional and selected advancement of the needles.
  • FIG. 1 is a plan view of the double lock cam system associated with the front needle bed of a flat knitting machine of the kind concerned and shows the conventional construction hitherto adopted.
  • FIG. 2 is a plan view of the double lock cam system constructed in accordance with the invention.
  • FIG. 3 is a plan view of a system corresponding to FIG. 2, but illustrating the paths of the needles, the main jacks and the auxiliary jacks as they pass through the system in the production of three different stitch formations.
  • FIG. 4 is a plan view similar to FIG. 3 but indicating a different setting of the cams in the system.
  • FIGS. 2 through 4 of the accompanying drawings like numerals are used to represent like elements throughout.
  • FIG. 1 which shows the prior art
  • those elements which correspond with the elements in FIGS. '2 through 4 are given the same numerals except in FIG. 1 the numerals are in the one hundred series.
  • FIG. 1 the upthrow cams, the Wing cams and the guard cams in the plate Na of the needle-actuating guide plate section, Ha of the main jack-actuating guide plate section and Hi of the auxiliary jack-actuating guide plate section are designated 101 through 110, and in FIGS. 2 through 4, corresponding elements are labeled 1 through 10.
  • the upthrow cams and the guard cams 113, 114 and 113, 114', respectively, for receiving and transferring stitches are provided on the needle cam plate Na, and the main jack cam plate Ha is provided with further stitch transfer cams 115 and 115.
  • the cams 113 and 114 are used only for stitch reception and are provided on the lefthand side of the plate Na, and cams 113 and 114 are used only for stitch transfer and are provided on the right-hand side of this cam plate.
  • FIG. 2 the parts of the cams shown hatched in FIG. 2, are capable of being projected outwardly, and thereby brought into position for operation or retracted into the plate and thereby rendered inoperative.
  • the selection of which cams are to be rendered operative depends upon the requirements of the knitting operation, and the means for projecting or retracting the cams is well known and is not shown in the drawings.
  • cams are provided at both ends of the needle cam plate Na, these cams being sub-divided into three parts, 12, 13 and 14, in such a manner as to define an additional channel 25 between the cams 12 and 13.
  • guide and guard carns 15, 16, 17 are associated with the main jack plate Ha at each entry to the advancing or guard cams for the stitch and loop forming cams 1, 3.
  • the advancing cams 1 of the main jack plate Ha are divided into two halves 1, 1' and therefore provide for a later further selection of the needles by the main jacks.
  • the auxiliary jack plate Hi there are associated with the auxiliary jack plate Hi, a group of cams 18 to 21, and at opposite ends of this group, upthrow cams and wing earns 22 to 24 which are simultaneously effective as run-in cams.
  • the arrangement permits of additional selection of the main jacks through the medium of auxiliary jacks in advance of the first knitting system 1 to a similar function is fulfilled by a division of the central advancing cam 20 of the auxiliary jack cam plate Ha into a number of parts 20, 20', 20" for the subsequent knitting system 1 to 5.
  • the auxiliary jacks 32 require to be distributed by the Jacquard cards in such a way that following three jacks 32 in the base, i.e. inoperative position, there is one jack 32 in the operating position, then one in the base position, and another again in the operating position, whereupon this sequence of distributtion is repeated. Since the upthrow cams 2, 3 on plate Na and cams 16, on the main jack plate Ha are out of action, in the preceding system only the needles 30 which transmit the necessary shifting movement for forming stitches, the auxiliary jacks 32' selected by the Jacquard card, and the corresponding main jacks 31 reach the most advanced position.
  • auxiliary jacks 32' advanced by the upthrow cams 22 of the auxiliary jackplate Hi, strike their associated main jacks 31 and bring these into the range of the cam 1 of the main jack plate Ha which cam, in cooperation with cam 3 of main jack plate Ha, advances the main jack 31', and also the associated needles 30 into the clearing position preparatory to stitch forming.
  • the selected main jacks 31' not engaged by auxiliary jack 32 are advanced by cam 1' of the main jack plate Ha only sufficiently for the associated needles 30" to reach the tucking position and consequently only to form tuck loops.
  • those needles 30 which have neither been advanced by a main jack 31 or through the agency of an auxiliary jack 32, remain in the starting position in which they were brought by the wing cam 6, as described above, and thus form no stitch whatsoever.
  • the process described is repeated in the same sense, whereby again stitches are formed through the selected auxiliary jacks and, through the agency of the selected main jacks, tuck loops are formed and the unaffected needles are made inoperative, as a result of which the yarn is laid and floats behind the previously formed stitches at these points.
  • FIG. 4 shows the locks for the front needle bed, again with the carriage moving in the direction of the arrow from right to left, but with a setting of the cams of the run-out jack plate Ha which is different from that of FIG. 3.
  • a double lock cam assembly for a Jacquard flat knitting machine comprising: a needle cam plate having cams arranged to effect movement of needles of the knitting machine, a main jack cam plate arranged to effect movement of the main jacks of the knitting machine, and an auxiliary jack cam plate arranged to effect movement of auxiliary jacks of the knitting machine, said cam plates extending generally parallel to each other, and the cams of the said plates being arranged symmetrically about a transverse plane which passes through the center of all of said plates; said needle cam plate including, on each side of said transverse plane, needle cam means for acting on the needles to permit the needles to move upward from a reference position, by a predetermined amount to a clearing position preparatory to forming a stitch, or by an intermediate amount less than said predetermined amount to a loop tucking position; the said main jack cam plate including, on each side of said transverse plane, main jack cam means for acting on the main jack, said main jack cam means having means for forming a first channel
  • cam means of the main jack cam plate comprises a set of guide cams located at each end, each set being constructed for transferring and receiving stitches.
  • a cam assembly according to claim 1 including, at
  • each end of said needle cam plate a group of three cams, the group at one end being a mirror image of the group at the other end, the three cams of each group forming two passages, one being a stitch reception channel and the other being a stitch transfer channel.
  • a cam assembly according to claim 1 including a central group of cams on said auxiliary jack cam plate between said auxiliary cam means, said central group of cams constructed to act on additional auxiliary jacks to act on additional main jacks.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US809825A 1968-03-23 1969-03-24 Cam system for automatic jacquard flat knitting machines Expired - Lifetime US3605450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1760025A DE1760025C3 (de) 1968-03-23 1968-03-23 Schloß für Jacquard-Flachstrickmaschinen mit Umhänge-Einrichtung

Publications (1)

Publication Number Publication Date
US3605450A true US3605450A (en) 1971-09-20

Family

ID=5695914

Family Applications (1)

Application Number Title Priority Date Filing Date
US809825A Expired - Lifetime US3605450A (en) 1968-03-23 1969-03-24 Cam system for automatic jacquard flat knitting machines

Country Status (5)

Country Link
US (1) US3605450A (de)
CH (1) CH487281A (de)
DE (1) DE1760025C3 (de)
FR (1) FR2004580A1 (de)
GB (1) GB1202820A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012927A (en) * 1974-09-10 1977-03-22 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Loop transferring cam system for flat knitting machines
US4154067A (en) * 1976-05-18 1979-05-15 Veb Wirkmaschinenbau Karl-Marx-Stadt Cam slides capable of effecting loop transfer in two opposite directions during cam slide travel in a single direction
US4287727A (en) * 1979-06-18 1981-09-08 Tatsumi Seiki Co., Ltd. Flat bed knitting machine
US4294085A (en) * 1978-10-03 1981-10-13 Bentley Alemannia Limited Flat bed knitting machines
US4474037A (en) * 1982-05-27 1984-10-02 Universal Maschinenfabrik Knitting-transfer cam unit for V-bed flat knitting machines with slider needles
US4490994A (en) * 1982-10-12 1985-01-01 H. Stoll Gmbh & Co. Flat knitting machine having needle selector device
EP0215746A2 (de) * 1985-09-18 1987-03-25 E.M.M. EMILIANA MACCHINE MAGLIERIE s.r.l. Vorrichtung zur Platine- und Nadelauswahl in einer automatischen Flachstrickmaschine
CN101122061B (zh) * 2007-09-14 2010-05-19 陈红岩 编织三角系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS167944B2 (de) * 1971-03-10 1976-05-28
DE2939066C2 (de) * 1979-09-27 1983-08-18 Schaffhauser Strickmaschinenfabrik, Schaffhausen Schloß für Flachstrickmaschine
DE3220049A1 (de) * 1982-05-27 1983-12-01 Universal Maschinenfabrik Dr. Rudolf Schieber GmbH & Co KG, 7081 Westhausen Strick- und umhaengeschlosskombination fuer v-bett-flachstrickmaschinen mit schiebernadeln
DD215345A1 (de) * 1983-05-09 1984-11-07 Elite Diamant Veb Maschenumhaengevorrichtung fuer flachstrickmaschinen mit nadelantrieb durch kurbeln
DE3407964C2 (de) * 1984-03-03 1986-07-24 H. Stoll Gmbh & Co, 7410 Reutlingen Flachstrickmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521786A (en) * 1949-04-09 1950-09-12 Granov Walter Knitting machine
DE1079264B (de) * 1956-02-23 1960-04-07 Universal Maschinenfabrik G M Schloss fuer Flachstrickmaschinen mit Maschen-Umhaengevorrichtung
DE1181852B (de) * 1959-10-27 1964-11-19 Dubied & Cie Sa E Jacquard-Flachstrickmaschine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012927A (en) * 1974-09-10 1977-03-22 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Loop transferring cam system for flat knitting machines
US4154067A (en) * 1976-05-18 1979-05-15 Veb Wirkmaschinenbau Karl-Marx-Stadt Cam slides capable of effecting loop transfer in two opposite directions during cam slide travel in a single direction
US4294085A (en) * 1978-10-03 1981-10-13 Bentley Alemannia Limited Flat bed knitting machines
US4287727A (en) * 1979-06-18 1981-09-08 Tatsumi Seiki Co., Ltd. Flat bed knitting machine
US4474037A (en) * 1982-05-27 1984-10-02 Universal Maschinenfabrik Knitting-transfer cam unit for V-bed flat knitting machines with slider needles
US4490994A (en) * 1982-10-12 1985-01-01 H. Stoll Gmbh & Co. Flat knitting machine having needle selector device
EP0215746A2 (de) * 1985-09-18 1987-03-25 E.M.M. EMILIANA MACCHINE MAGLIERIE s.r.l. Vorrichtung zur Platine- und Nadelauswahl in einer automatischen Flachstrickmaschine
EP0215746A3 (en) * 1985-09-18 1987-12-02 E.M.M. Emiliana Macchine Maglierie S.R.L. Device for the selection of the sinker and needle assemblies of an automatic flat 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
FR2004580A1 (de) 1969-11-28
CH487281A (de) 1970-03-15
DE1760025C3 (de) 1982-12-02
GB1202820A (en) 1970-08-19
DE1760025B2 (de) 1976-02-19
DE1760025A1 (de) 1971-07-08

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