US3491558A - Needle mechanism for a raschel warp knitting and method of operating the same - Google Patents

Needle mechanism for a raschel warp knitting and method of operating the same Download PDF

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Publication number
US3491558A
US3491558A US706314A US3491558DA US3491558A US 3491558 A US3491558 A US 3491558A US 706314 A US706314 A US 706314A US 3491558D A US3491558D A US 3491558DA US 3491558 A US3491558 A US 3491558A
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Prior art keywords
needle
bars
needles
knitting
shaft
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Expired - Lifetime
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US706314A
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English (en)
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Karl Kohl
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor

Definitions

  • This invention relates to Raschel warp knitting machines, and particularly to a needle mechanism for machines having two needle bars, and to the operation of the machine.
  • the invention is concerned with Raschel machines in which the needles of the two needle bars are alternatingly lifted to the highest or tucking position.
  • the knitting needles while rising toward the up-position, move laterally of the needle bars toward the latch side prior to the lapping movement of the yarn guides until the needles are beyond the yarn guides in the normal or rest position of the latter.
  • the needles of the two needle beds alternatingly perform this lateral movement which starts after the needles leave their lowermost or knocking-over position, and the lateral return movement of the needles, which brings them back to the starting position, takes place after the yarn guides have performed their lapping movements in each knitting cycle.
  • the spacing of the two trick plates respectively associated with the needle bars remains substantially constant during the lateral movements of the two groups of needles.
  • the starting or upposition of each knitting needle is shifted relative to the vertical median plane of the guide bars.
  • a supplemental swinging movement of the guide bars which is needed in known machines to position the yarn guide properly relative to the needles at the start of each knitting cycle is thereby avoided.
  • the yarn guides perform only the simple swinging motion which is usual in Raschel knitting machines having but one needle bar and few guide bars. This permits the operating speed of the Raschel knitting machines of the invention to be increased substantially over that of conventional Raschel knitting machines equipped with two operating needle bars, and the number of guide bars, which is inherently limited to two in the known machines, may be increased greatly.
  • needles also move in plane transverse to the direction of elongation of the associated needle bars (not shown in FIG. 1), that is, in the plane of FIG. 1, and laterally relative to the needle bars, toward and away from a central position near the vertical median plane 5 of the yarn guides 6 in the illustrated normal or rest position of the guides 6.
  • the needle 4 is shown in its knocking oif position closely adjacent the plane 5, while the needle 3, as shown in FIG. 1, has moved from a corresponding terminal position along the path indicated by the broken line 7 into the illustrated up-position in which the needle is well beyond the nearest yarn guide 6. After reaching that position, the needle 3 stands still while the yarn guides 6 perform the lapping motions of the knitting cycle, as partly indicated by the arcuate line 8 which illustrates the swinging motions of the yarn guides, the endwise motion not being capable of being shown in FIG. 1.
  • the mechanism employed for causing the needle movements is partly shown in FIG. 2, only the portion of the mechanism associated with the needle bar of the knitting needle 3 being illustrated, and that associated with the needle 4 being a mirror image of the structure shown.
  • the needle bar 9 is guided on rods 9' for up-and-down movement in longitudinal ball bearings 10 of supporting clamps 11 attached to a shaft 12 by clamping screws 21,
  • the shaft 12 is journaled in the machine frame for rocking or oscillating movement which is transmitted to the shaft 12 from a cam mechanism, not seen in FIG. 2, by a push rod 14 and an arm 13.
  • the trick plate 1 is fixedly attached to the clamps 11 by screws 15.
  • the knitted fabric 16 is drawn off between the two trick plates 1, 2 in the direction of the arrow.
  • Dependent bearing brackets 15' on the knitting machine frame 16' pivotally support a rocker shaft 17 equipped with hangers 18 and yokes 19 on which guide bars 20 may be moved longitudinally in a conventional manner by a pattern mechanism, not shown.
  • the shaft 17 is pivoted back and forth in proper synchronization during each knitting cycle in a conventional manner not directly relevant to this invention.
  • FIG. 3 also illustrates the needle bed 9a, supporting clamp 11a, and shaft 12a corresponding to the aforedescribed elements 9, 11, 12 associated with the needle 4.
  • the shafts 12, 12a are oscillated by levers 22, 22a engaging cams 23, 23a on cam shafts 24, 24a. Movement is transmitted from the levers 22, 22a to the shafts 12, 12a by push rods 14, 14a and arms 13, 13a, as partly described with reference to FIG. 2, whereby the needles 3, 4 are moved laterally prior to, and after, the lapping motions of the guide needles 6.
  • the levers 22, 22a are rotatably mounted on stationary shafts 25, 25a which also carry similar levers 26, 26a which engage cams 27, 27a on the cam shafts 24, 24a.
  • the movements of the levers 26, 26a are transmitted to the rod 9' and its non-illustrated counterpart associated with the needle bar 9a by connecting rods 28, 28a.
  • the cam shafts 24, 24a are connected by non-illustrated gears to the main drive shaft of the knitting machine, as is conventional, and one of the cam shafts is equipped with a non-illustrated swing cam that causes the rocking movement of the shaft 17 and the conventional swinging motion of the guide bars 20 with their yarn guides 6 in proper timed sequence with the movements of the needle bars 9, 9a and the knitting needles 3, 4.
  • the spacing of the trick plates 1, 2 remains fairly uniform during the lateral movement of the needles 3, 4, and the trick plates and the two groups of needles 3, associated with the trick plates remain substantially parailel to each other in all operative positions of the machine.
  • the trick plates move relative to each other in'a direction whose principal component is vertical. This helps in holding the knitted fabric down, and the usual sinker bar may be omitted.
  • the two needle bars 9, 9a and the associated two trick plates 1, 2 are mounted on a common supporting clamp 11c fixedly attached to a shaft 120.
  • a slot 18 passes through the clamp 11c and the shaft 12c in a plane between the parallel paths of the needles 3, 4 to permit take-up of the knitted fabric 16".
  • the modified apparatus of FIG. 4 is suitable particularly for knitting narrow goods, such as shoe laces, tubular nets, and the like, which are readily passed singly or in groups through the slot 18'.
  • the shaft is rocked by an arm 13c and a push rod cooperating with a cam mechanism in a manner obvious from FIG. 3 and conventional in this art.
  • said securing means including a support member fixedly fastened to each shaft, and guiding means guiding one of said needle bars on said support member for the reciprocating movement thereof, said fastening means fixedly fastening one of said trick plates to said support member.
  • said shaft being formed with a slot therethrough in a plane intermediate said paths; (c) fastening means fixedly fastening said trick plates to said shaft; and (d) actuating means for oscillating said shaft about the axis thereof and for reciprocating said needle bars in said respective paths.
  • said securing means including a support member fixedly fastened to said shaft, and guiding means guiding said needle bars 10 5.
  • said shaft being formed with an additional slot therethrough in said plane, said slots being axially spaced from each other.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US706314A 1967-02-22 1968-02-19 Needle mechanism for a raschel warp knitting and method of operating the same Expired - Lifetime US3491558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0072855 1967-02-22

Publications (1)

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US3491558A true US3491558A (en) 1970-01-27

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US706314A Expired - Lifetime US3491558A (en) 1967-02-22 1968-02-19 Needle mechanism for a raschel warp knitting and method of operating the same

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US (1) US3491558A (fr)
JP (1) JPS502669B1 (fr)
GB (1) GB1221831A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646782A (en) * 1969-11-01 1972-03-07 Karl Kohl Warp knitting machine for pile fabrics
EP0787844A1 (fr) * 1996-02-06 1997-08-06 Luigi Omodeo Zorini Métier à crochets pour le tricotage chaîne et procédé utilisé
WO2003057959A1 (fr) * 2001-12-28 2003-07-17 Nippon Mayer Ltd. Dispositif de modification de l'espacement des plaques de peigne pour metiers rachel doubles
CN101413180A (zh) * 2008-12-16 2009-04-22 吴永春 经编机
CN102704181A (zh) * 2012-07-05 2012-10-03 卡尔迈耶（中国）有限公司 双针床经编机中央调节装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240883U (fr) * 1975-09-12 1977-03-23

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2744398A (en) * 1951-04-28 1956-05-08 Scheibe Walter Warp knitting machine
US2990703A (en) * 1956-05-28 1961-07-04 Bialostok Max Glove knitting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2744398A (en) * 1951-04-28 1956-05-08 Scheibe Walter Warp knitting machine
US2990703A (en) * 1956-05-28 1961-07-04 Bialostok Max Glove knitting apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646782A (en) * 1969-11-01 1972-03-07 Karl Kohl Warp knitting machine for pile fabrics
EP0787844A1 (fr) * 1996-02-06 1997-08-06 Luigi Omodeo Zorini Métier à crochets pour le tricotage chaîne et procédé utilisé
WO2003057959A1 (fr) * 2001-12-28 2003-07-17 Nippon Mayer Ltd. Dispositif de modification de l'espacement des plaques de peigne pour metiers rachel doubles
CN101413180A (zh) * 2008-12-16 2009-04-22 吴永春 经编机
CN101413180B (zh) * 2008-12-16 2013-11-06 吴永春 经编机
CN102704181A (zh) * 2012-07-05 2012-10-03 卡尔迈耶（中国）有限公司 双针床经编机中央调节装置
CN102704181B (zh) * 2012-07-05 2013-10-09 卡尔迈耶（中国）有限公司 双针床经编机中央调节装置

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Publication number Publication date
DE1635845B1 (de) 1972-06-29
GB1221831A (en) 1971-02-10
JPS502669B1 (fr) 1975-01-28

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