US3789630A - Lock or cam arrangement for knitting machines - Google Patents

Lock or cam arrangement for knitting machines Download PDF

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Publication number
US3789630A
US3789630A US00191620A US3789630DA US3789630A US 3789630 A US3789630 A US 3789630A US 00191620 A US00191620 A US 00191620A US 3789630D A US3789630D A US 3789630DA US 3789630 A US3789630 A US 3789630A
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United States
Prior art keywords
arrangement according
structural unit
cam
guide
cams
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
Application number
US00191620A
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English (en)
Inventor
H Schieber
E Krause
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.)
Henkel Dorus GmbH and Co KG
Original Assignee
Dr Rudolf Schieber GmbH and Co KG
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
Priority claimed from DE19712111514 external-priority patent/DE2111514C3/de
Application filed by Dr Rudolf Schieber GmbH and Co KG filed Critical Dr Rudolf Schieber GmbH and Co KG
Application granted granted Critical
Publication of US3789630A publication Critical patent/US3789630A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a switchable lock or cam arrangement for knitting machines, particularly flat-knitting machines.
  • Known switchable locks or switchable cams for flatknitting machines are constructed in the manner that all cam parts for moving needles in the machine, as well as the means necessary for the switching of these cam parts, are mounted on a common base plate .with which they form a single overall structure.
  • Such locks must be designed very differently from each other since they must perform functions which differ, depending on the particular application of the knitting machine and the type of knitting to be undertaken. It frequently happens that with available knitting machines it is not possible, due to the shape of the various locks or cams in the machine, to knit new patterns in accordance with a fashion which has changed; so that as a rule, it becomes necessary to use a new machine having increased or different pattern possibilities.
  • the structural units can suitably each be arranged in a separate housing, and space can be provided in the housing for a spring for biasing of the cams toward a particular position.
  • a structural unit wherein the housing is made of plastic.
  • the cams of the individualstructural units can be mechanically switchable and can be arranged to be held in position by locking devices actuated by electromagnets.
  • electromagnets can also be provided for the direct switching of the individual cams.
  • the various individual structural units can contain needle raising cams, needle lowering cams, looptransfer devices or safety devices.
  • FIG. 1 is a top view illustrating schematically a part of a switchable cam arrangement in accordance with the invention for flat-knitting machines
  • FIG. 2 is a top view illustrating schematically a needle lowering structural unit for the switchable cam arrangement of FIG. 1;
  • FIG. 3 is a top view illustrating schematically a structural unit for loop transfer for the switchable cam arrangement of FIG. 1;
  • FIG. 4 is a top view illustrating schematically a needle lowering structural unit for use with machines having a loop transfer device
  • FIG. 6 is a section view taken along the line VI-VI in FIG. 4;
  • FIG. 7 is a view of the structural unit of FIG. 6 in the direction of the arrow A in FIG. 6;
  • FIG. 8 is a section view taken along line VIII-VIII of FIG. 6.
  • FIG. 1 there is shown a top view of a double system switchable lock or cam arrangement for flat-knitting machines with wrapping device and needle selection by pattern sinkers.
  • FIGS. 2 to 5 Various individual structural units, shown schematically by way of example in FIGS. 2 to 5, can be introduced as exchange into such a switchable lock or cam arrangement.
  • a base plate 1 there are fastened to a base plate 1 a plurality of structural units, 2, 6, 7, 10, 12 and 14, by means of which there is composed a lock or cam configuration by which stitches o'r loops selected with long butt and short-butt needles can be formed which transfer loops and needles can be selected by means of cams via pattern sinkers.
  • the structural unit 2 is used for needle selection and is formed of a lower needle raiser 3, an upper needle raiser 4 and a base body 5, which are detachably connected to the base plate 1.
  • Each needle raiser 3, 4 is switchable into fully inserted, semi-inserted or noninserted position by electromagnets (not shown) fastened to the base body 5. If now the number of possible patterns is to be increased, the structural unit 2 for the needle selection can be replaced by another structural unit in connection with which, for instance, in addition to the above-mentioned three positions, a fourth position is also possible without any change having to be made in the remaining construction of the overall lock or cam arrangement.
  • the structural unit 6, which is shown by itself in FIG. 3, contains adjustable needle lowerers 8 which can be switched in such a manner that they pass the knitting needles to the structural unit 10 (FIG. 1) for wrapping or for loop assuming and transmission.
  • structural units 7 and 6a (FIG. 2), which are equipped with normal needle lowerers 9 and 8a, respectively, may be provided in the device.
  • the structural unit 7 is shown in FIG. 1 in position incorporated in the lock, while in FIG. 2 the structural unit 6a, which is constructed as the mirror image of the unit 7, is shown by itself.
  • the structural unit 10 for the wrapping should no longer be required for a particular application, then the structural unit 6 for the loop transfer is replaced, for instance, by the needle lowerer structural unit 60 (FIG. 2), and the structural unit 10 is replaced by a safety structural unit 11, shown in FIG. 5.
  • This last-mentioned structural unit has only safety parts 25 for covering the needle lowerer.
  • the structural units 12 and 14 shown in FIG. I serve to control pattern sinkers. These units can be either omitted individually as desired or be replaced by other corresponding structural units with different possibilities of cam selection and positioning.
  • the structural unit 12 which has a sinker raiser 17 which can be switched by corresponding electromagnets into non-engagement, halfengagement and full engagement, and a sinker lowerer 20 which can be switched by another electromagnet into half-inserted and disengaged position, could be replaced by a structural unit without the sinker lowerer 20, but with a sinker raiser which can be switched into one-third engaged, half engaged, fully engaged, and non-engaged position.
  • each structural unit will contain its own switching bolt which is disconnectable, in each case, with a corresponding switching bolt of the neighboring unit.
  • the structural unit 10 comprises a base body 22 in the shape ofa housing which may be formed ofa distortion-free plastic in order to minimize weight and to achieve economical manufacture.
  • the base body 22 has screw holes 23 and pin holes 24 by means of which it can be attached to the base plate 1.
  • the screw holes 23 and pin holes 24 are located at the same place in order to permit exchangeability.
  • Safety parts 25 and 26 and a lift part 27, for loop transfer are each firmly mounted on the base body 22.
  • Two guide bolts 28 and 29 are movable in corresponding bore holes in the upper and lower walls of the base body.
  • a lift part 30, for the taking over of loops, is fastened to the guide bolts 28 and 29.
  • tension springs 31 and 32 which pull downwardly upon and move the guide bolts 28 and 29 until limiting pins 33 and 34 mounted thereon come against the base body 22.
  • the lift part 30 for the taking over of the loops, can grasp the needle butts.
  • This lift part 30 is urged upwardly mechanically by means of a wedge (not shown) upon each reversal of carriage or base plate movement.
  • the lift part is then held in its upper position by means of a locking bolt actuated by an electromagnet 36 so that it enters into a groove 35 in the guide bolt 28.
  • the lift part 30 may also be urged upwardly directly as by means of an electromagnet 40.
  • the selection of needles for the transfer loops is obtained by means of the needle raiser 3 in FIG. 1.
  • the needle lowerer 8 of the structural unit 6 for the transfer of the loops is divided, as shown in FIGS. 1 and 3.
  • This needle lowerer is made up of two parts which can be disconnected so that the needles can be fed to the lift part 27 for the transfer of the loops. For this reason, the safety parts 25 and 26 and the lift part 27 do not have to be switchable for the transfer of the loops.
  • the structural unit 10 for the taking over and delivery of the loops can be replaced easily by the safety structural unit 11.
  • This unit serves, in the case of machines without a wrapping device, to realign the needles.
  • the structural unit 6 for the loop transfer would then also be replaced by the needle lowerer structural unit 6a of FIG. 2.
  • a switchable lock or cam arrangement on flat bed knitting machines comprising a base plate, a plurality of separate structural units, each of said structural units comprising a body, at least one guide having a cam attached thereto, said guide being movably mounted on said body for movement of said cam to different positions, separate switchable means also mounted on the body and positioned for locking its associated guide in preselected position with respect to the body and means for separately detachably mounting each structural unit as a separate integral body with its own associated guides, cams and switchable means contained thereon, separately onto said base plate, whereby said units are individually replaceable for obtaining any desired variation in knitting pattern.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00191620A 1971-03-10 1971-10-22 Lock or cam arrangement for knitting machines Expired - Lifetime US3789630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712111514 DE2111514C3 (de) 1971-03-10 Schlitten für Flachstrickmaschinen

Publications (1)

Publication Number Publication Date
US3789630A true US3789630A (en) 1974-02-05

Family

ID=5801117

Family Applications (1)

Application Number Title Priority Date Filing Date
US00191620A Expired - Lifetime US3789630A (en) 1971-03-10 1971-10-22 Lock or cam arrangement for knitting machines

Country Status (5)

Country Link
US (1) US3789630A (de)
JP (1) JPS545864Y2 (de)
CS (1) CS167944B2 (de)
FR (1) FR2129454A5 (de)
GB (1) GB1388771A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882694A (en) * 1973-03-14 1975-05-13 Vyzk Vyvojovy Ustav Vseobe Adjustable needle cam support
US4004437A (en) * 1975-04-09 1977-01-25 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Flat knitting machine
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
US4723423A (en) * 1983-10-06 1988-02-09 H. Stoll Gmbh & Co. Flat-bed knitting machine having an electronic control for the movement of the needle sinker
US5212968A (en) * 1990-07-04 1993-05-25 Shima Seiki Mfg., Ltd. Presser controller of a carriage in a flat knitting machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1571765A (en) * 1920-07-08 1926-02-02 Max Nydegger Pattern-change mechanism for knitting machines
US3304748A (en) * 1963-01-31 1967-02-21 Dubied & Cie Sa E Cam-box for a jacquard flat knitting machine
DE1435132A1 (de) * 1959-10-20 1968-10-24 Walter Boeniger Handstrickmaschine
DE1435161A1 (de) * 1960-12-30 1968-10-24 Manta Sa Aushebevorrichtung fuer elektrisch-magnetische Schaltvorgaenge an Flachstrickmaschinen
FR2004580A1 (de) * 1968-03-23 1969-11-28 Stoll & Co H

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1571765A (en) * 1920-07-08 1926-02-02 Max Nydegger Pattern-change mechanism for knitting machines
DE1435132A1 (de) * 1959-10-20 1968-10-24 Walter Boeniger Handstrickmaschine
DE1435161A1 (de) * 1960-12-30 1968-10-24 Manta Sa Aushebevorrichtung fuer elektrisch-magnetische Schaltvorgaenge an Flachstrickmaschinen
US3304748A (en) * 1963-01-31 1967-02-21 Dubied & Cie Sa E Cam-box for a jacquard flat knitting machine
FR2004580A1 (de) * 1968-03-23 1969-11-28 Stoll & Co H

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882694A (en) * 1973-03-14 1975-05-13 Vyzk Vyvojovy Ustav Vseobe Adjustable needle cam support
US4004437A (en) * 1975-04-09 1977-01-25 Universal Maschinenfabrik Dr. Rudolf Schieber Kg Flat knitting machine
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
US4723423A (en) * 1983-10-06 1988-02-09 H. Stoll Gmbh & Co. Flat-bed knitting machine having an electronic control for the movement of the needle sinker
US5212968A (en) * 1990-07-04 1993-05-25 Shima Seiki Mfg., Ltd. Presser controller of a carriage in a flat knitting machine

Also Published As

Publication number Publication date
FR2129454A5 (de) 1972-10-27
GB1388771A (en) 1975-03-26
DE2111514A1 (de) 1972-09-21
JPS545864Y2 (de) 1979-03-16
DE2111514B2 (de) 1975-12-04
CS167944B2 (de) 1976-05-28
JPS52128756U (de) 1977-09-30

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