US3818727A - Apparatus for controlling the movements of a flat knitting machine - Google Patents

Apparatus for controlling the movements of a flat knitting machine Download PDF

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Publication number
US3818727A
US3818727A US00320173A US32017373A US3818727A US 3818727 A US3818727 A US 3818727A US 00320173 A US00320173 A US 00320173A US 32017373 A US32017373 A US 32017373A US 3818727 A US3818727 A US 3818727A
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US
United States
Prior art keywords
permanent magnet
pins
pin
control
abutment
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
US00320173A
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English (en)
Inventor
W Hadam
J Ploppa
E Goller
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.)
H Stoll GmbH and Co KG
Original Assignee
H Stoll 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
Application filed by H Stoll GmbH and Co KG filed Critical H Stoll GmbH and Co KG
Application granted granted Critical
Publication of US3818727A publication Critical patent/US3818727A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

  • control member moves all abutment pins to a with- U.S. 66/127, 66/154 A, 66/78 drawn position where they are held by a permanent Int. D04b 15/52 magnet, the field of which is then locally and selec- [58] Field of Search 66/125, 127, 78, 126, I54, tively offset to release selected abutment pins, permit- 66/ 5, 128 ting them to be resiliently moved to the operative position. The control member then moves to retain the [56] References Cited other abutment pins in the withdrawn position.
  • the invention relates to an apparatus for controlling the movements of a flat knitting machine.
  • control of the movements of a flat knitting machine is meant, for example, control of the reversal of the thread guides, the cam parts and the adjustable abutments or stops with which such a machine is provided.
  • control apparatus the movements of a flat knitting machine are controlled by electromagnets which, for example, are arranged at the ends of the machine frame in planes at right angles to the movement of the carriage and, when they are activated and hence under electrical tension, constitute traverse abutments for rods which are slidable on the carriage and serve as reversing elements for the machine.
  • the problem is solved by the provision of a control apparatus wherein all of a set of abutment pins are offered, by actuation of a common slide means, to a controllable holding magnetic system furnished with a corresponding set of individually controllable poles and the holding effort of which system is produced by a permanent magnet, the said holding effort at a specified momenteither during the course, or at the end, of a carriage strokebeing withheld by a short impulse selectively transmitted or applied to appropriate ones of the control poles, the arrangement and operation of the apparatus being such that those abutment pins selected for controlling movement during the succeeding carriage stroke are released and restored under the influence of springs to upper operative positions, whereas the remaining abutment pins which continue to be held by the holding magnetic system during said specified moment are then subsequently positively held down and guarded against unintentional release by formations on the same common slide means.
  • the common slide means is longitudinally displaceable, to force down all the abutment pins into contact with the magnetic holding system by an over stroke, e.g. effected by a lever.
  • FIG. 1 is a general perspective view of the control apparatus as seen from above.
  • FIG. 2 is a vertical sectional view taken on the line IIII of FIG. 1.
  • FIG. 2A is a horizontal sectional view taken on line 2A--2A of FIGS. 1 and 2.
  • FIG. 2B is a vertical sectional view taken along line 2B-2B of FIGS. 1 and 2.
  • FIG. 3 is a sectional view similar to FIG. 2, but with the abutment pins attracted.
  • FIG. 4 is a further sectional view similar to FIG. 2, but showing only selected ones of the abutment pins attracted.
  • FIG. 5 is a perspective illustration of the retaining magnetic system.
  • FIG. 6 is a crosssection taken on the line VIVI of FIG. 5.
  • axially displaceable abutment pins 6 are mounted in and guided by upper and lower guide plates 1 and 2 respectively.
  • Pins 7 set transversely into the abutment pins 6 are guided in transverse grooves 14 cut in the lower plate 2.
  • the grooves 14 are in communication with longitudinal groove 15 also formed in the plate 2.
  • Mounted slidably within the longitudinal groove 15 is a slide 5 which has formed therein saw-toothed recesses 16.
  • the recesses 16 are equally spaced apart at distances corresponding to those between the abutment pins 6.
  • the slide 5 is moved by lever 10 mounted in the bearer plate 3 after, or during the course of each stroke of the machine carriage.
  • the lever 10 is connected via suitable rivets 26 to an inverted U-shaped bracket 27 opened at the bottom, which bracket slides vertically in recessed grooves 28 on both sides of the slide 5.
  • This vertical sliding movement of bracket 27 on slide 5 permits the rectilinear movement of the slide 5 as the lever 10 turns about its axis.
  • the guide pins 7 projecting into the longitudinal groove 15 and into the recesses 16 in the slide 5 are positively pressed downwards, by virtue of the slanting wall 23 of said recesses in the transverse grooves 14 during the displacement of the slide into the position 5' indicated in FIG. 3.
  • all the abutment pins 6 are offered to the retaining or the holding magnetic system 18 and remain held against the surface 19 of this system by a magnetic force acting on permeable discs 11 of buffer elements 8, e.g. of metal and rubber, of the pins 6.
  • the abutment pins 6 which are required for reversing the working parts of a flat knitting machine by engagement of such pins by corresponding abutment slides 22, must be released from the holding magnetic system 18 to enable them to return to their upper operative positions under the restoring influence of compression springs 12.
  • the magnetic force exerted on selected abutment pins 6 must be removed for a short period. Such removal is effected by the fact that the magnetic field of a permanent magnet 24 incorporated in the holding magnetic system 18 is sufficiently weakened, by a temporary flow of current through coils 25 wound around pole pins 20, to permit corresponding abutment pins to be pulled away by the force of their respective springs 12.
  • the magnetic field of a coil 25 compensates or weakens the field of the permanent magnet 24.
  • each pole pin 20 designates a housing for the common pole 19 and a magnetic intermediate plate 21, and the counter pole pins 20 are disposed in the holding magnetic system.
  • the upper portion of each pole pin 20 defines, together with the surrounding portion of the common pole 19, an air gap which is filled by a diamagnetic bush 9, so that a magnetic effect is set up at this location.
  • Each bush 9 assists in sealing the housing of the magnetic system and also provides a bearing for the relevant counter pole pin 20.
  • the slide 5 After the selection process, the slide 5 returns from the position 5' (FIG. 3) to the starting position (FIG. 4).
  • the guide pins 7 of those abutment pins 6 which are released from the holding magnetic system 18, are pressed up by their respective springs 12 into the corresponding recesses 16.
  • the remaining guide pins 7 are held down and guarded by the noses 17 of the slide 5 against unintentional detachment from the holding magnetic system 18 as seen in FIG. 4.
  • only one of the abutment pins 6 in the row shown in FIGS. 2-4 is released from the holding magnetic system whereas the remaining three abutment pins thereof are held down.
  • the complete control apparatus is not confined to use at one position only and may, for example, be displaceable along a guide rail 13 during a variation in carriage stroke, and by the same amount.
  • the apparatus may, for example, be used for the control of the carriage cams through the medium of cam slides. It is, however, to be clearly understood that the apparatus those skilled in the art without departing from the spirit and scope of the invention, as defined in the claims.
  • An apparatus for controlling movement of a mov- 5 able member of a flat knitting machine comprising:
  • each pin of the set being movable between an inoperative position and an operative position, in the latter of which the pin is positioned to be engaged by the said movable member to thereby control the movement thereof, permanent magnet means for holding all of said pins in said inoperative position and spring means for urging each pin away from the holding force of the permanent magnet means to the operative Position, the force of said spring means being sufficiently great to keep away from the permanent magnet means a pin already spaced therefrom but insufficiently great to pull away from the permanent magnet means a pin, the end of which is being held by the permanent magnet means,
  • the release means of the selected pin is operated to release those pins so that they can move to the operative position.
  • said release means comprising a permanent magnet, a control pole associated with each abutment pin and extending from the permanent magnet towards its respective abutment pin, each control pole including a means for electrically magnetizing the same with a polarity opposing that of the permanent magnet so as to permit the abutment pin associated therewith to be released from holding contact with the permanent magnet to move under the influence of its spring means towards the operative position.
  • said control means including means for urging all of the pins of a group thereof into contact with the permanent magnet means in opposition to the spring means, for momentarily releasing the selected pins to move by the action of their respective spring means towards the operative position, and then for holding the remaining nonselected pins to prevent accidental movement thereof toward the operative position.
  • said abutment pins being arranged vertically and including transverse guide pins extending laterally therefrom, means for guiding the transverse pins vertically
  • the control means including a slide member movable horizontally and having one recess in the bottom thereof for each transverse pin of a group of aligned abutment pins, a portion of each recess being inclined and positioned to urge its respective transverse pin and hence also its associated abutment pin downwardly as the slide member moves in one direction, said slide member including a flat bottom edge adjacent each recess for holding the transverse pin of the adjacent recesses downwardly, said selected pins being movable upwardly back into the recesses when the slide member moves in the opposite direction, and said slide member including a nose portion which, upon further movement in said opposite direction, holds the remaining transverse pins downwardly to prevent accidental release from the pennanent magnet means of the non-selected abutment pins.
  • the permanent magnet means has a common pole spaced from the permanent magnet, and said control poles being constituted by shoes of the permanent magnet, each of which control poles forms an air gap with the common pole, and wherein each of the control poles has a control winding, the magnetic induction in the said control pole being so weakened by the application of voltage to the control winding as to produce a reduced holding force within said air gap.
  • each of the abutment pins carries at its end adjacent the permanent magnet means a buffer element which serves as an armature and is so shaped as to be movable in three planes to thereby dampen the impact applied to the exterior thereof.
  • An apparatus including a magnetic intermediate plate adjacent the permanent magnet and surrounding the control poles.
  • control means has recesses associated with transverse pins attached to the abutment pins, the control means further including noses which, by action of such transverse pins, holds down and guards the respective abutment pins against unintentional release.
  • control means is a slide member longitudinally displaceable under the action of a lever controlled by the knitting machine to force all of the abutment pins into contact with the permanent magnet means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00320173A 1971-12-30 1973-01-02 Apparatus for controlling the movements of a flat knitting machine Expired - Lifetime US3818727A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2165538A DE2165538C3 (de) 1971-12-30 1971-12-30 Steuervorrichtung für eine Flachstrickmaschine

Publications (1)

Publication Number Publication Date
US3818727A true US3818727A (en) 1974-06-25

Family

ID=5829694

Family Applications (1)

Application Number Title Priority Date Filing Date
US00320173A Expired - Lifetime US3818727A (en) 1971-12-30 1973-01-02 Apparatus for controlling the movements of a flat knitting machine

Country Status (6)

Country Link
US (1) US3818727A (fr)
CH (1) CH544828A (fr)
DE (1) DE2165538C3 (fr)
FR (1) FR2166988A5 (fr)
GB (1) GB1388209A (fr)
IT (1) IT971237B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364244A (en) * 1979-08-31 1982-12-21 Edmundas Vambutas Memory controlled electromagnetic passive controllers
US5253790A (en) * 1992-06-16 1993-10-19 Brady John R Fabric cutting system
US6105209A (en) * 1998-06-22 2000-08-22 Brady; John R. Fabric cutting weight with integral spikes
US20060280630A1 (en) * 2005-06-09 2006-12-14 Lg Electronics Inc. Linear compressor
CN104047104A (zh) * 2014-07-01 2014-09-17 爱谱诗（苏州）服装有限公司 多功能自动纺织机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5636707A (en) * 1979-08-31 1981-04-10 Digital Interface Systems Corp Memory control electromagnetic passive actuator
DE3002540C2 (de) * 1980-01-25 1983-01-05 Schaffhauser Strickmaschinenfabrik, Schaffhausen Vorrichtung zur Einstellung der Maschenlänge auf einer Flachstrickmaschine
EP0219971B1 (fr) * 1985-09-13 1989-12-20 Jakob Schlaepfer & Co AG Sélecteur pour machine à broder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035426A (en) * 1956-08-20 1962-05-22 Macqueen Kenneth Gordon Knitting processes and knitting machines
US3053065A (en) * 1959-01-21 1962-09-11 Steiger Robert Control system for rectilinear knitting-machines

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH363114A (fr) * 1959-01-21 1962-07-15 Steiger Robert Machine à tricoter rectiligne
FR1213382A (fr) * 1959-01-21 1960-03-31 Commande des mouvements sur machine à tricoter rectiligne
DE1109217B (de) * 1959-11-07 1961-06-22 Telefunken Patent Elektromagnetisches Relais mit mehreren unabhaengig voneinander steuerbaren Ankern fuer Fernmelde-, insbesondere Fernsprech-anlagen
DE1809222U (de) * 1959-11-09 1960-04-07 Hahn Magnet Ing Fred Hahn Zugstangenbefestigung an ankern von elektro-magneten.
DE1819906U (de) * 1960-04-07 1960-10-20 Licentia Gmbh Elektromagnet.
DE1585211C2 (de) * 1965-03-06 1979-02-22 Sulzer Morat Gmbh, 7026 Bonlanden Rundstrickmaschine
CH466487A (de) * 1966-11-15 1968-12-15 Flad Karl Strickmaschine mit einer Vorrichtung zum Auswählen der Nadeln
DE1635900A1 (de) * 1967-08-17 1971-11-04 Dfeiffes Geb Ribler Heidelind Verfahren und Vorrichtung zum Stricken,Wirken,Weben u.dgl.
DE1980806U (de) * 1967-12-22 1968-03-14 Thomas Fa Robert Elektromagnet mit daempfungsvorrichtung.
DE2021742B2 (de) * 1970-05-04 1973-03-22 H. Stoll & Co, 7410 Reutlingen Flachstrickmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035426A (en) * 1956-08-20 1962-05-22 Macqueen Kenneth Gordon Knitting processes and knitting machines
US3053065A (en) * 1959-01-21 1962-09-11 Steiger Robert Control system for rectilinear knitting-machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4364244A (en) * 1979-08-31 1982-12-21 Edmundas Vambutas Memory controlled electromagnetic passive controllers
US5253790A (en) * 1992-06-16 1993-10-19 Brady John R Fabric cutting system
US6105209A (en) * 1998-06-22 2000-08-22 Brady; John R. Fabric cutting weight with integral spikes
US20060280630A1 (en) * 2005-06-09 2006-12-14 Lg Electronics Inc. Linear compressor
US7922463B2 (en) * 2005-06-09 2011-04-12 Lg Electronics Inc. Linear compressor
CN104047104A (zh) * 2014-07-01 2014-09-17 爱谱诗（苏州）服装有限公司 多功能自动纺织机
CN104047104B (zh) * 2014-07-01 2016-05-04 苏州万图明电子软件有限公司 多功能自动纺织机

Also Published As

Publication number Publication date
DE2165538B2 (de) 1980-01-03
DE2165538C3 (de) 1984-08-30
FR2166988A5 (fr) 1973-08-17
CH544828A (de) 1973-11-30
GB1388209A (en) 1975-03-26
IT971237B (it) 1974-04-30
DE2165538A1 (de) 1973-07-19

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