US3855819A - Electro-mechanical needle selecting means for circular knitting machines - Google Patents

Electro-mechanical needle selecting means for circular knitting machines Download PDF

Info

Publication number
US3855819A
US3855819A US00371173A US37117373A US3855819A US 3855819 A US3855819 A US 3855819A US 00371173 A US00371173 A US 00371173A US 37117373 A US37117373 A US 37117373A US 3855819 A US3855819 A US 3855819A
Authority
US
United States
Prior art keywords
cam
jacks
level
butts
selecting
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
US00371173A
Other languages
English (en)
Inventor
M Sawazaki
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.)
Precision Fukuhara Works Ltd
Original Assignee
Precision Fukuhara Works Ltd
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 Precision Fukuhara Works Ltd filed Critical Precision Fukuhara Works Ltd
Application granted granted Critical
Publication of US3855819A publication Critical patent/US3855819A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/78—Electrical devices

Definitions

  • ABSTRACT Electro-mechanical means for selective raising of the needles in circular knitting machines having selector jacks-individually related to the needles in the cylinder needle slots with the jacks having radially outwardly extending butts and jack selecting cams rotating relative to the'needle cylinder with the cams electronically controlled to move between selecting and nonselecting levels, the cams at their selecting levels engaging butts of selected jacks to move the latter radially inwardly of the needle slots and the butts of the so moved jacks thereafter engaging the cams to return the same to their non-selecting levels.
  • a permanent magnet associated with each cam is magnetically attracted to a fixed electromagnet between pulses of the latter to retain the cam at its non-selecting level, and is magnetically repelled from the electromagnet when the latter is pulsed to move the cam to its selecting level.
  • a spring aids in the movement of each cam to its selecting level and a fixed stop plate to which the permanent magnet is attracted when the cam is at its selecting level acts to prevent vibration of the cam.
  • the present invention relates generally to the art of knitting and more particularly to improved electromechanical needle selecting means for use upon circular knitting machines for the selective raising of the needles thereof.
  • selector jacks having individual butts at a plurality of levels are selectively actuated by tiltable selecting levers, one at each such level, the levers being movable into and out of jack selecting position by electromagnets individually associated with the levers, the electromagnets being suitably selectively pulsed from an electronic pattern pulsing apparatus.
  • each selecting lever with a permanent magnet so arranged as to be magnetically attracted to and held by the electromagnet individual to the lever thereby to retain the lever in non-operative position against the force of a spring urging the lever to operative position.
  • the arrangement is such that upon proper pulsing of the electromagnet the permanent magnet is repelled therefrom whereby the lever, with ⁇ the spring assisting, is tilted to operative position, the lever being prevented from vibration by magnetic attraction between the permanent magnet on the lever and a second permanent magnet.
  • FIG. 1 is a vertical section taken through the needle cylinder, the surrounding cam ring and the associated parts of a multi-feed circular knitting machine and showing the electro-mechanical needle selecting means of the present invention associated therewith,
  • FIG. 2 is a view generally similar to a portion of FIG. 1 showing the relationship between one of the plurality of jack selecting cams of the present invention and one level of butts on the needle selector jacks in the needle cylinder with the jack cam in non-selecting position,
  • FIG. 3 is a view generally similar to FIG. 2 and showing the jack cam and lever in selecting position
  • FIG. 4 is a diagrammatic view of an enlarged scale showing the relationship between the operating end of a jack selecting cam and the butts on the needle selector jacks when the jack cam and lever are in selecting position,
  • FIG. 5 is a view generally similar to FIG. 4 and showing the jack cam and lever in non-selecting position
  • FIG. 6 is an elevational view showing the stepped disposition of the plurality of electromagnets used to control the selecting and non-selecting positions of the individual jack cams and levers at each feed of the machine,
  • FIG. 7 is an elevational view showing the stepped disposition of the butts on the needle selector jacks
  • FIG. 8 is a plan view showing the manner in which the jack selecting cam levers are mounted at each feed of the machine.
  • FIG. 9 is a view generally taken on line AA of FIG. 7 showing the needle selector jacks in relation to the needle cylinder and to one of the jack selecting cams and lever.
  • the electro-mechanical needle selecting means of the present invention is shown in position upon a multi-feed circular knitting machine of the rotary cylinder type wherein the periphery of an elongated needle cylinder 1 is provided with a series of adjacent vertically extending parallel slots 2 within each of which is positioned a needle 3 disposed above an intermediate jack 4 which in turn is disposed above a selector jack 5.
  • the machine has a non-rotating cam ring 6 provided with a cam path 7 defined between needle moving cams 8 and 9.
  • Needles 3 have butts 10 disposed in cam path,7, the needles being moved vertically in customary manner by cams 8 and 9.
  • Jacks 4 and 5 are pivotally movable with jack 4 also being vertically movable in each slot 2.
  • Jacks 5 are adapted to oscillate about spring 12, being movable radially inwardly deeper into slot 2 by jack selecting cam 14, of a selecting lever 13, acting upon butts 36 of the jacks when lever 13 is in needle selecting position, as will be explained, and being movable radially outwardly by elongated bottom end 16, of intermediate jack 4, acting upon the upper end 15 of jack 5, when jack 4 is rocked in counterclockwise direction to its position in FIG. 1.
  • Jack 4 is provided at an intermediate portion thereof with a radially outwardly extending butt 23 which projects into cam path 20 formed by cams 21 and 22, the butt 23 remaining in the cam path and serving as a fulcrum about which the jack is rocked.
  • Jack 4 is provided at its lower end with a radially outwardly extending butt 18 located in cam path 18, above raise cam 19, when the jacks 4 and 5 are in their positions of FIG. 1.
  • Jack 4 is also provided at its upper end with a radially outwardly extending butt 24 the upper edge 25 of which is adapted to engage with the lower edge 26 of needle 3, when the parts are as shown in FIG. 1, to raise needle 3 when jack 4 is raised by cam 19.
  • Jack 4 may be rocked in clockwise direction by inward movement of end 15 of jack acting on end 16 of jack 4 in which event butt 24 of jack 4 enters cam path 46 between cams 9 and 21, and butt 18 is moved inwardly out of cam path 17 so it cannot be acted upon and raised by cam 19.
  • jack 4 is not raised neither is its associated needle 3 and its butt 23 moves horizontally along cam path 20.
  • Cam path 20 is constructed so as to allow butt 23 to rise when jack 4 is raised and so as to thereafter act upon butt 23 to lower jack 4 between feeds after it has acted to raise its associated needle.
  • Each successive group of 10 jacks 5 have selecting butts individually disposed thereon at each of IO separate levels, see FIG. 7 where jacks having uppermost butts 36c and 36d thereon at a common level are spaced by nine intervening jacks having butts thereon atseparate stepped lower levels, so that the butts at each level are horizontally spaced by jacks having no butts at each such level.
  • a pivotally movable selecting lever 13 having a selecting cam 14 at its end to engage the butts 36 and move jacks 5 radially inwardly.
  • Each lever 13 is generally horizontally disposed so as to pivot or tilt about spaced shafts 43 which are ball bearing mounted, as at 45, in spaced walls 30 of a suitable bracket in which IQ of the levers 13 are similarly positioned at each feed of the machine.
  • the bracket 30 at each feed of the machine is suitably secured to stationary base plate 41 of the machine.
  • the relationship between each cam 14 and the jacks 5 at its level may'be seen in FIG. 9, with the cam 14 arranged so that it may be raised and lowered between successive jacks. This is also seen in FIG. 8.
  • the lever 13 and cam 14 is in raised non-selecting position in FIG. 2 and is in lowered selecting position in FIG. 3.
  • the cam 14 When in nonselecting position, the cam 14 is just above the passing butts 36, FIG. 5, of jacks 5 and has no effect upon them.
  • the letters A, B anc C may be considered to indicate three positions of a single jack 5 as it passes by cam 14.
  • the cam 14 When in the lowered selecting position, the cam 14 is aligned with passing butts 36, FIG. 4, of jacks 5 so that its angled cam face 39 first contacts the outer edges of 36a of butts 36 to radially tilt the jacks 5 inwardly about fulcrum 12.
  • FIG. 4 the cam 14 is aligned with passing butts 36, FIG. 4, of jacks 5 so that its angled cam face 39 first contacts the outer edges of 36a of butts 36 to radially tilt the jacks 5 inwardly about fulcrum 12.
  • the letters A, B, C, D and E may be considered to indicate five positions of a single jack 5 as it passes by cam 14, and it will be seen that the jack in positions C, D and E has already been tilted by surface 39 and that downwardly angled cam surface 40 and lower face 44 of cam 14 (immediately following the inwardly angled surface 39) has contacted the upper edge 36b of jack butt 36 and has forced itself (and lever 13) upwardly to its nonselecting position of FIGS. 2 and 5.
  • Each selected jack 5 which has been moved radially inwardly by a cam 14 on a lowered lever 13 in selecting position thus itself acts to immediately raise such cam and its lever 13 to a non-selecting position.
  • jacks 5 are stressed in compression and the force thereof is taken up by plate 47 underlying the lower ends of the jacks. Should there be undue wear upon or even breakage of butts 36, it is only necessary to replace the so affected jacks 5.
  • lever 13 Associated with each lever 13, at the end thereof opposite to cam 14, is an electromagnet 27 which comprises a U-shaped core 28 and a coil 29 about the same, FIG. 3.
  • electromagnet 27 which comprises a U-shaped core 28 and a coil 29 about the same, FIG. 3.
  • lever 13 At the right side of and adjacent fulcrum shaft 43, lever 13 is provided with a pole piece 32 at one end of a permanent magnet 31 and with a second pole piece 33 at the other end of the magnet, pole piece 33 being supportedly positioned by a non-magnetic brass plate 34 attached to the pole pieces by screws 35, 35, FIG. 8.
  • the pole pieces are arranged immediately above the opposite ends of core 28 and being of opposite polarity with each thereof when coil 29 is not pulsed, they are attracted to and held in contact with core 28 to hold lever 13 in position of FIG. 2.
  • a suitably anchored tension spring 37 is attached to each lever 13 to urge the same in counterclockwise direction, however, the magnetic attraction between the pole pieces and the core is sufficient to overcome the effect of the spring and the parts remain as shown in FIG. 2 so long as coil 29 is not pulsed. With the parts in position of FIG. 2, the needles associated with the non-selected jacks 5 are raised.
  • the cores 29 of selected electromagnets are electrified or pulsed by suitably electronically controlled pattern pulsing apparatus (not shown) when cam 14 is between butts, such as 36a, 36b, with the result that each of the ends of core 28 have the same polarity as the pole pieces 32, 33 adjacent thereto (normally the polarity is opposite) and the core and pole pieces act to repel each other.
  • Such repelling force plus the force of spring 37 causes lever 13 to be turned in counterclockwise direction about shaft 43 to position of FIG. 3, where it is stopped by contact of pole piece 33 and stop plate 38 of a permanent magnet, the magnetic attraction between pole piece 33 and plate 38 of opposite polarity serving to prevent vibration of lever 13.
  • each lever 13 places its cam 14 in position to contact a butt 36 associated therewith to cause the corresponding selector jack 5 to be radially moved inwardly of the needle cylinder, such movement of the jack, in the manner described, causes the associated needle not to be raised.
  • butt 36 of such selected jack 5 acting on faces 40 and 44 of cam 14 raises lever 13 to its original position of FIG. 2, thus leaving the parts in position for a new needle selection to be made at the next feed of the machine.
  • Needle selecting means for circular knitting machines having a vertically disposed slotted needle cylinder and having needles adapted to be raised and lowered in said cylinder needle slots, lengthwise extending selector jacks also in said slots, said jacks being selectively movable and being operatively related to said needles in such manner as to cause said needles to be selectively raised as a consequence of said selective movement of said jacks, a cam rotating relative to said cylinder and being movable between first and second levels in the first of which said cam moves selected ones of said jacks and in the second of which said jacks are unaffected by said cam, and said jacks and said cam being operatively related in such manner that each of said jacks so moved by said cam at its said first level thereafter causes said cam to be moved from its said first to its said second level.
  • a spring is operatively related to said cam to urge said cam from its said sec ond to its said first level, and wherein said movement to said cam from its said first to its said second level by said jacks is sufficient to overcome the effect of said spring on said cam.
  • a permanent magnet is operatively related to said cam and is movable between a pair of positions corresponding to said first and second levels of said cams, a fixedly positioned electromagnetic adapted to be selectively pulsed, said permanent magnet being magnetically attracted to said electromagnet and being moved thereby to one of its said pair of positions between pulses of said electromagnet whereby said cam is retained at its said second level, and said permanent magnet being magnetically repelled from said electromagnet and being moved thereby to the other of its said pair of positions when said electromagnet is pulsed whereby said cam is moved to its said first level 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00371173A 1973-02-23 1973-06-18 Electro-mechanical needle selecting means for circular knitting machines Expired - Lifetime US3855819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2181673A JPS5421465B2 (fr) 1973-02-23 1973-02-23

Publications (1)

Publication Number Publication Date
US3855819A true US3855819A (en) 1974-12-24

Family

ID=12065573

Family Applications (1)

Application Number Title Priority Date Filing Date
US00371173A Expired - Lifetime US3855819A (en) 1973-02-23 1973-06-18 Electro-mechanical needle selecting means for circular knitting machines

Country Status (3)

Country Link
US (1) US3855819A (fr)
JP (1) JPS5421465B2 (fr)
GB (1) GB1436607A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3972207A (en) * 1974-11-04 1976-08-03 Vinatex Knitting Systems, Inc. Selection device for the needles of a knitting machine
US3977215A (en) * 1975-07-11 1976-08-31 Jumberca, S.A. Needle selector mechanism for knitting machine
US3987646A (en) * 1972-01-10 1976-10-26 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Magnetic actuator construction for a circular knitting machine
US3998073A (en) * 1974-08-20 1976-12-21 Macchine Tessili Circolari-Matec S.P.A. Selection device for oscillating jacks in a circular knitting machine
FR2318962A1 (fr) * 1975-07-24 1977-02-18 Jumberca Sa Metier pour fabriquer des articles de bonneterie
FR2372261A1 (fr) * 1976-11-29 1978-06-23 Matec Spa
FR2444100A1 (fr) * 1978-12-13 1980-07-11 Dainippon Screen Mfg Dispositif de selection des aiguilles dans des metiers a tricoter automatiques
US4546623A (en) * 1982-12-16 1985-10-15 Memminger Gmbh Knitting machine with controllably rockable knock-over bits
EP0328976A1 (fr) * 1988-02-15 1989-08-23 MEC-MOR S.r.l. Dispositif de sélection d'aiguilles pour un métier à tricoter
US5070711A (en) * 1989-01-18 1991-12-10 Savio S.P.A. Method and device for needle selection in a circular knitting machine, particularly for selection needle by needle
EP0568866A1 (fr) * 1992-04-27 1993-11-10 HARTING ELEKTRONIK GmbH Système d'aimant pour la sélection d'aiguilles dans des machines textiles
US5323627A (en) * 1992-04-30 1994-06-28 Santoni S.R.L. Multiple yarn feed circular knitting machine, in particular for stockings
US6101850A (en) * 1997-10-07 2000-08-15 Jumberca, S.A. System for the selection of needles for a circular knitting machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59199850A (ja) * 1983-04-26 1984-11-13 永田精機株式会社 電子柄出し丸編機の電磁選針装置
CS248661B1 (en) * 1984-03-22 1987-02-12 Milos Dvorak Needle selection device
JPS60224845A (ja) * 1984-04-21 1985-11-09 ワックデータサービス株式会社 丸編機用選針装置
DD235283A1 (de) * 1985-03-12 1986-04-30 Textima Veb K Vielsystemige rundstrickmaschine, insbesondere r/l-grossrundstrickmaschine
JPH04106387U (ja) * 1991-02-18 1992-09-14 永田精機株式会社 編機用電磁選針装置
US5419162A (en) * 1994-01-25 1995-05-30 Matrix, S.R.L. High speed electromagnet selection device for selecting the needles in a knitting machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH362787A (fr) * 1960-02-15 1962-06-30 Beguin Rene Dispositif de sélection des aiguilles d'une maschine à tricoter
US3449928A (en) * 1965-03-06 1969-06-17 Morat Gmbh Franz Selector apparatus for circular knitting machines
CH483511A (fr) * 1967-09-15 1969-12-31 Ed Dubied & Cie S A Dispositif de sélection des aiguilles d'une machine à tricoter
US3499300A (en) * 1966-07-01 1970-03-10 Elitex Zavody Textilniho Pattern device for circular knitting machines
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
US3771328A (en) * 1972-01-03 1973-11-13 A Schindele Jack-controlling means for the needles of a circular knitting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH362787A (fr) * 1960-02-15 1962-06-30 Beguin Rene Dispositif de sélection des aiguilles d'une maschine à tricoter
US3449928A (en) * 1965-03-06 1969-06-17 Morat Gmbh Franz Selector apparatus for circular knitting machines
US3499300A (en) * 1966-07-01 1970-03-10 Elitex Zavody Textilniho Pattern device for circular knitting machines
US3530686A (en) * 1967-03-06 1970-09-29 Mayer & Cie Maschinenfabrik Pattern device for circular knitting machines having rotary needle carriers
CH483511A (fr) * 1967-09-15 1969-12-31 Ed Dubied & Cie S A Dispositif de sélection des aiguilles d'une machine à tricoter
US3771328A (en) * 1972-01-03 1973-11-13 A Schindele Jack-controlling means for the needles of a circular knitting machine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987646A (en) * 1972-01-10 1976-10-26 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Magnetic actuator construction for a circular knitting machine
US3948062A (en) * 1973-08-15 1976-04-06 Precision Fukuhara Works, Inc. Electronic needle selecting means for circular knitting machines
US3998073A (en) * 1974-08-20 1976-12-21 Macchine Tessili Circolari-Matec S.P.A. Selection device for oscillating jacks in a circular knitting machine
US3972207A (en) * 1974-11-04 1976-08-03 Vinatex Knitting Systems, Inc. Selection device for the needles of a knitting machine
US3977215A (en) * 1975-07-11 1976-08-31 Jumberca, S.A. Needle selector mechanism for knitting machine
FR2318962A1 (fr) * 1975-07-24 1977-02-18 Jumberca Sa Metier pour fabriquer des articles de bonneterie
US4038837A (en) * 1975-07-24 1977-08-02 Jumberca, S.A. Needle selection mechanism for knitting machines
US4138865A (en) * 1976-11-29 1979-02-13 Macchine Tessili Circolari Matec S.P.A. Circular knitting machine having a multiple selection system for the needles
FR2372261A1 (fr) * 1976-11-29 1978-06-23 Matec Spa
FR2444100A1 (fr) * 1978-12-13 1980-07-11 Dainippon Screen Mfg Dispositif de selection des aiguilles dans des metiers a tricoter automatiques
US4546623A (en) * 1982-12-16 1985-10-15 Memminger Gmbh Knitting machine with controllably rockable knock-over bits
EP0328976A1 (fr) * 1988-02-15 1989-08-23 MEC-MOR S.r.l. Dispositif de sélection d'aiguilles pour un métier à tricoter
US5070711A (en) * 1989-01-18 1991-12-10 Savio S.P.A. Method and device for needle selection in a circular knitting machine, particularly for selection needle by needle
EP0568866A1 (fr) * 1992-04-27 1993-11-10 HARTING ELEKTRONIK GmbH Système d'aimant pour la sélection d'aiguilles dans des machines textiles
US5323627A (en) * 1992-04-30 1994-06-28 Santoni S.R.L. Multiple yarn feed circular knitting machine, in particular for stockings
US6101850A (en) * 1997-10-07 2000-08-15 Jumberca, S.A. System for the selection of needles for a circular knitting machine

Also Published As

Publication number Publication date
JPS49109666A (fr) 1974-10-18
JPS5421465B2 (fr) 1979-07-31
GB1436607A (en) 1976-05-19

Similar Documents

Publication Publication Date Title
US3855819A (en) Electro-mechanical needle selecting means for circular knitting machines
US3948062A (en) Electronic needle selecting means for circular knitting machines
US3262285A (en) Electromagnetic needle selection mechanism
US3283541A (en) Method and device for the individual control of selecting members
US3710594A (en) Device for the selection of the needles or knitting accessories of circular knitting machines
US4739636A (en) Circular knitting machine
ES363650A1 (es) Una maquina de tejer punto.
EP0395383B1 (fr) Dispositif électromagnétique pour la sélection des aiguilles dans une machine tricoteuse circulaire
GB1327431A (en) Knitting machine with device for jacquard patterning
US3461690A (en) Pattern device for circular knitting machines
US4799366A (en) Knitting or hosiery machine with electronic-controlled, electromechanically actuated selection of the needles
US4570463A (en) Needle selection device for a knitting machine
US4860557A (en) Needle selection system for a circular knitting machine
US3955380A (en) Knitting machine patterning device
US3534566A (en) Patterning mechanism for knitting machines
US4989424A (en) Needle selection device for a circular knitting machine, particularly for ladies' stockings
US5197303A (en) Needle selection device in a circular knitting machine with elastic jacks
GB2201431A (en) Needle selection device for circular knitting machines
US4688404A (en) Electromagnetic patterning system on a knitting machine
US4972686A (en) Electromagnetic needle selector for circular knitting machines
US3864942A (en) Pattern-selecting devices for knitting machines
US3919863A (en) Electronic needle selecting means for circular knitting machines
US5205139A (en) Method and device comprising deformable spring contraints for needle selection in a circular knitting machine
GB1258850A (fr)
EP0441005A1 (fr) Procédé et dispositif pour la sélection d'aiguille À  aiguille à un métier à tricoter circulaire au moyen de sélecteurs élastiques