US3811297A - Control mechanism for circular knitting machines with rotating needle carrier - Google Patents

Control mechanism for circular knitting machines with rotating needle carrier Download PDF

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Publication number
US3811297A
US3811297A US00077226A US7722670A US3811297A US 3811297 A US3811297 A US 3811297A US 00077226 A US00077226 A US 00077226A US 7722670 A US7722670 A US 7722670A US 3811297 A US3811297 A US 3811297A
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United States
Prior art keywords
needle
jacks
jack
pattern
cam
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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
US00077226A
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English (en)
Inventor
G Hamma
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.)
Maschinenfabrik Spaichingen GmbH
Original Assignee
Maschinenfabrik Spaichingen GmbH
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Filing date
Publication date
Priority claimed from DE19691950846 external-priority patent/DE1950846C3/de
Application filed by Maschinenfabrik Spaichingen GmbH filed Critical Maschinenfabrik Spaichingen GmbH
Application granted granted Critical
Publication of US3811297A publication Critical patent/US3811297A/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
    • D04B15/66—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 A pattern control mechanism for a circular knitting machine with a rotating needle carrier, in which the needles are controlled at a pattern position by means of a plurality of electromagnetic pattern devices, each needle being provided with an associated needle jack having control feet which follow each other in sequence in a stepwise manner, the needle jacks being slidable in the needle carrier and being selectively swingable, at the pattern selection point all of the needle jacks with their control feet are carried past a ramp-like cam which swings the needle jacks into a first position, in which they are in a position to cooperate with their jack-advancing cam.
  • a plurality of selectively energizable electromagnetic stopping means are provided for holding the jacks into a second position wherein they do not cooperate with such cam. Every stopping magnet is provided with a movable returning mechanism; the stopping magnets work upon selected jacks at the pattern selecting station, the returning force which opposes the magnets being less than the strength of the magnets.
  • This invention relates to a control mechanism for a circular knitting machine with a rotating needle carrier, in which the needle selecting mechanism at every needle selecting position or station isprovided with a plurality of pattern control electromagnetic selecting mechanisms.
  • the machine is provided with needle jacks which are mounted in the needle channels and are selectively held in swung or tipped position.
  • the needle jacks are provided with control feet, the control feet of the needle jacks following one another in a stepby-step manner.
  • an electrically controlled pattern control mechanism for circular knitting machines which are of conventional construction, so that such control mechanisms. without alteration of the rotating part of the circular knitting machine, may be mounted on the machine in the place of the previously known mechanical pattern control mechanism.
  • a Jacquard pattern control mechanism provided with pins.
  • the control mechanism of the invention may be supplied with electrical current from a hitherto known electrical control mechanism.
  • a salient feature of the present invention is the fact that all needle jacks with their controlling feet are controlled by being swung by a pattern controlling cam past which the needle jacks run, selected ones of such jacks being held in swung position by selectively energizable stopping magnet means, and that every stopping magnet is provided with a similar needle jack returning mechanism that works at the selection point upon the jacks which have been selected by the stopping magnets, the returning force of such returning means being less than that of the energized stopping magnets.
  • the electromagnets need have only one function, which is the stopping or holding of the selected needle jacks. It isto be understood that. in accordance with the invention,
  • control mechanism may be employed in those knit- '-ting machines in the same art with needle jacks which have previously been controlledby a mechanical control'mechanism employing pins and the like.
  • the invention requires no special cam for the return of the needle jacks into their at-rest or outwardly thrust positions;
  • Every stopping magnet is provided with a similar returning means by means of which the needle jacks associated with those stopping magnets which have not been energized are thrust into their a-t-rest positions.
  • Such returning mechanisms like the holding magnets, are attached to a fixed frame part of the machine.
  • Control mechanisms in accordance with the invention may be made in a variety of manners.
  • the needle jacksin accordance with the invention may be constructed in a conventional manner, that is, provided with two control feet, one of which cooperates over the whole length of the pattern position station during the travel of the needle carrier; during this time the other control foot is positioned at the selecting point for cooperation with the returning mechanisms.
  • the returning mechanism is preferably made in the form of a spring biased slider which is provided on its inner end confronting the needle jacks with a ramp-like control surface for cooperation with the control feet of the needle jacks'which run therepast, the entering end of the controlling surface being positioned opposite the entering end of the controlling or stop surface of the magnets during the rotation of the needle cylinder.
  • the needle jacks always first engage the stopping magnet with their first control feet, before the other or second control feet engage the sliders for returning them rearwardly.
  • the swingable control foot of the associated needle jack will be held swung outwardly in a known manner in its needle channel of the needle cyldancewith theinvention are provided with solenoid I plungers which also serve as needle jack returning means.
  • the solenoid plunger of the stopping magnet is preferably opposed by a spring which constantly thrusts the magnet plungers.
  • the end of the magnet plunger opposite from the solenoid or armature end is provided with a cam-shaped surface which cooperate with the fixed control cam or piece, there being provided a ramp-like controlling surface against which the controlling feet of the needle jacks are swung.
  • the returning springs for the solenoid plungers have such effective force that they are overcome by the solenoid plungers of the magnets when the magnets are energized. 7
  • FIG. I is a vertical radial section through the cam sleeve or mantle and the needle cylinder of a circular knitting machine incorporating a first-disclosed emboidment of the pattern control mechanism of the intaken along the line IIb-IIb in FIG. 1;
  • FIG. 3 is a fragmentary development of the cam sleeve or mantle in the section thereof shown in FIGS.
  • FIG. 20 and 2b such section being indicated by curved line III-III of FIGS. 2a and 2b, FIG. 3 showing the relative positioning of the pattern control feet of the needle jacks;
  • FIG. 4 is a figure similar to FIG. I but showing a second embodiment of pattern control apparatus incorporated in a circular knitting machine;
  • FIG. is a view similar to FIGS. 2a and 2b, the view being a horizontal section along the line V-V in FIG.
  • FIG. 6 is a view similar to FIG. 3, the figure being a development of the cam Sleeve or mantle in the zone shown by-th'e curved line vi v1 in FIG. 5, FIG. 6 showing the relative positions of the pattern feet of the needle jacks; and
  • FIG. 7 is a view in vertical section through the magnet portion of the pattern control mechanism of the second embodiment, the section being taken along the broken section line VII-VII of FIG. 4.
  • FIG. 1 shows a needle cylinder 1, in the needle channels 2 of which there are disposed needle jacks 3 and needles 4.
  • the needle cylinder 1 rotates in a knownmanner within a stationary cam sleeve o'r mantle 5 disposed coaxially thereof, the-mantle or cam-carrying shell 5 having a] plurality of cam pieces mounted thereon, there being four such cam pieces 6 shown in FIG. I.
  • the second and third pieces 6 from the top present a channel 7 therebetween, such channel receiving the needle feet or cam followers 4a on the needles.
  • the pattern arrangement 8 includes in its lower portion a plurality of juxtaposed arresting or holding magnets l2 which coact with the pattern feet 3d of the needle jacks 3 and in the upper portion of the pattern arrangement there are arranged a plurality of juxtaposed return plungers or sliders 13, which coact with the upper pattern feet 30 of the needle jacks 3.
  • the con struction of the return sliders l3 and the arresting magnets 12 is illustrated inv FIGS.'2a and-2b.
  • Each one of the arresting magnets, which are at all times arranged to coact with a step of the pattern feet 3d of the needle pushers 3, is provided with a magnetic core 12a, the
  • the magnetic core 12a has at the radially
  • the lowermost cam piece or pieces 6 provide on their lower edge a guiding surface for the cam followers 3a of the needle jacks 3.
  • the needle jacks 3 are mounted by their heads 3!) in the needle channels 2 of the needle cylinder l in a known manner so that the needle jacks are either, disposed vertically, as shown in FIG. I, or are tipped counter-clockwise from such position so that the base of a needle jack engages the vertical root of the needle channel 2 ofthe cylinder 1.
  • the needle jacks are constantly urged toward the above-described tipped position by interaction of verticallyaligned spaced spring pressed plungers; to be described.
  • jacks-3 are made of ferromagnetic metal.
  • a control foot-3e thereon adjacent its lower end rides upon the upper surface of a stationary cam piece 11 mounted on a fixed part of the machine coaxial of mantle 5; when'the jacks are swung counterclockwise from the position of jack 3- in FIG. I after they have been raised. the foot on each jack is moved radially inwardly sufficiently so that when the jack 3 is retracted, thefoot 3e thereon lies radially inwardly of the cam piece II and is not then controlled by such cam.
  • the jacks 3 are all similar except for the placement of the feet 34' and 3d thereon.
  • the jacks are disposed in sets of 6, the feet 3c and 3d of successive jacks in each being arranged en echelon. the rows of feet 36 and 3d being parallel.
  • FIG. 3 also shows how the jacks travel through successive systems of the circular knittingmachine.
  • FIGS..I 2, and 3 The machine-of FIGS..I 2, and 3 is provided with a patterncontrolmechanism 8, mechanism 8 being supported upon adjustable ring device 9 which in turn is inner end thereof an arresting surface 120, which extends across the whole width of the selection position, and is disposed coaxially of the needle cylinder and cam sleeve.
  • FIGS. 4-7 A second embodiment of pattern control mechanism in accordance with the invention is shown in FIGS. 4-7, inclusive.
  • a pattern control 20 having a plurality of holding magnets 21, such magnets beingof a different construction fromthose shown at 12 in FIGS. 1-3, inclusive.
  • Magnets 21 have solenoid plungers or sliders 22 which cooperate with respective ones of control feet 3f on the needle jack 3.
  • the control feet 3f of adjacent needle jacks 3 are disposed adjacent each other en echelon, each control foot 3]" being associated with a corresponding stopping magnet 21 and a slider 22.
  • the sliders 22 are arranged in one row, one above the other, and are constantly yieldably urged in a radially inward direction by a coil compression spring 23 the outer end of which acts upon a spring seat in a guiding casing for the sliders 22, and the inner end of which acts upon a lateral wing 220 on each of the sliders.
  • Confronting the sliders at their radially inner ends is a pattern piece or cam 14 in the form of a ramp which is inclined radially outwardly forwardly and then joins with an arcuate portion coaxial of the needle cylinder, the rap confronting an oppositely inclined radially inwardly contracting surface 22b on the inner end of the sliders 22.
  • the control feet 3f of the respective needle jacks 3 engage the surface 22b as shown in FIG. 5.
  • the magnets 21 are disposedin three vertical rows with the magnets in such three rows being disposed en echelon.
  • Sliders 22 which. cooperate with trolled by cam 11.
  • the magnet in the intermediate vertical row have armatures which are aligned therewith.
  • Sliders 22 which cooperate with the two outer rows of magnets, however, are provided with oppositely laterally extending wings 22d having armature surfaces 22(- which are aligned with the pole pieces of their respective magnets 21.
  • Each of the magnets has a U-shaped core 210 on the two legs of which there are located coil windings 21b. When a magnet 21 is energized, it holds its associated slider 22 radially outwardly against the opposition of spring 23 so that the control feet 3f of the needle jacks 3 no longer engage ramp surface 221) on the sliders as the needle jacks rotate with the needle cylinder 1 in the direction 17 past the pattern control mechanism 20.
  • the windings or coils of the stopping magnets ofthe pattern control mechanism may be supplied with current from conventional electric pattern control mechanism which supplies such magnets with energizing current at the right time and'in the'correct sequence to provide a desired pattern in the knitted product.
  • each needle being provided with an associated needle jack which is slidable in the needle carrier and is selectively swingable into and out ofoperative engagement with a stationary jack advancing cam past which the jacks travel on the needle carrier, each needle jack having one control foot, the control feet of the needle jacks following each other in sequence in a stepwise manner, a ramp-like cam at the.
  • the improved needle selecting means which comprises a plurality of selectively energizable electromagnetic solenoid means at the pattern selecting position, said solenoid means having cores reciprocally radially movable of the needle carrier, said cores having contacting surfaces on their inner ends for selectively cooperating with the respective control feet on the needle jacks and having also armature surfaces at their outer ends, and yieldable means for urging all of the cores radially inwardly, said yieldable means being selectively overpowered by said i ally outwardly by said needle jacks engaging said contacting surfaces as said needle jacks are successively swung outwardly by said ramp-like cam, and nonselected cores being thereafter movedfinwardly by.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00077226A 1969-10-09 1970-10-01 Control mechanism for circular knitting machines with rotating needle carrier Expired - Lifetime US3811297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691950846 DE1950846C3 (de) 1969-10-09 Mustervorrichtung für Rundstrickmaschinen mit umlaufenden Nadelträgern

Publications (1)

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US3811297A true US3811297A (en) 1974-05-21

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US00077226A Expired - Lifetime US3811297A (en) 1969-10-09 1970-10-01 Control mechanism for circular knitting machines with rotating needle carrier

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US (1) US3811297A (es)
JP (1) JPS515103B1 (es)
CH (1) CH515364A (es)
ES (1) ES383507A1 (es)
FR (1) FR2064885A5 (es)
GB (1) GB1258850A (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505665A (es) * 1973-02-28 1975-01-21
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
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
US5000014A (en) * 1988-02-15 1991-03-19 Mec-Mor S.R.L. Needle selection device for circular knitting machines

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119204U (es) * 1976-03-09 1977-09-09
JPS54160701U (es) * 1978-04-28 1979-11-09
JPS5566828U (es) * 1978-11-02 1980-05-08
JPS56342U (es) * 1979-06-15 1981-01-06

Citations (7)

* 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
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3423960A (en) * 1966-04-29 1969-01-28 Marshall John D Pattern control means for knitting machines
US3460160A (en) * 1965-12-28 1969-08-05 Fulvio Sangiacomo Circular hosiery-making apparatus
CH483511A (fr) * 1967-09-15 1969-12-31 Ed Dubied & Cie S A Dispositif de sélection des aiguilles d'une machine à tricoter
US3534566A (en) * 1967-12-01 1970-10-20 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines

Patent Citations (7)

* 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
US3229482A (en) * 1963-04-10 1966-01-18 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines
US3365916A (en) * 1965-03-02 1968-01-30 Morat Kg Franz Selector magnetic arrangement for knitting machines
US3460160A (en) * 1965-12-28 1969-08-05 Fulvio Sangiacomo Circular hosiery-making apparatus
US3423960A (en) * 1966-04-29 1969-01-28 Marshall John D Pattern control means for 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
US3534566A (en) * 1967-12-01 1970-10-20 Wildt Mellor Bromley Ltd Patterning mechanism for knitting machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS505665A (es) * 1973-02-28 1975-01-21
US3955380A (en) * 1973-02-28 1976-05-11 Jumberca, S.A. Knitting machine patterning device
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
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
US5000014A (en) * 1988-02-15 1991-03-19 Mec-Mor S.R.L. Needle selection device for circular knitting machines

Also Published As

Publication number Publication date
GB1258850A (es) 1971-12-30
CH515364A (de) 1971-11-15
DE1950846A1 (de) 1971-04-29
DE1950846B2 (de) 1976-04-01
JPS515103B1 (es) 1976-02-17
ES383507A1 (es) 1973-04-16
FR2064885A5 (es) 1971-07-23

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