EP0286827A2 - Métier à tricoter circulaire à plusieurs systèmes et sélection d'aiguiles électromagnétique - Google Patents

Métier à tricoter circulaire à plusieurs systèmes et sélection d'aiguiles électromagnétique Download PDF

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Publication number
EP0286827A2
EP0286827A2 EP88103605A EP88103605A EP0286827A2 EP 0286827 A2 EP0286827 A2 EP 0286827A2 EP 88103605 A EP88103605 A EP 88103605A EP 88103605 A EP88103605 A EP 88103605A EP 0286827 A2 EP0286827 A2 EP 0286827A2
Authority
EP
European Patent Office
Prior art keywords
selection
circular knitting
knitting machine
needle
magnet
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.)
Granted
Application number
EP88103605A
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German (de)
English (en)
Other versions
EP0286827A3 (fr
EP0286827B1 (fr
Inventor
Hartmut Dipl.-Ing. Schindler
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.)
Sipra Patententwicklungs und Beteiligungs GmbH
Original Assignee
Sipra Patententwicklungs und Beteiligungs GmbH
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Publication date
Application filed by Sipra Patententwicklungs und Beteiligungs GmbH filed Critical Sipra Patententwicklungs und Beteiligungs GmbH
Publication of EP0286827A2 publication Critical patent/EP0286827A2/fr
Publication of EP0286827A3 publication Critical patent/EP0286827A3/fr
Application granted granted Critical
Publication of EP0286827B1 publication Critical patent/EP0286827B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B15/00Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/78Electrical devices
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04BKNITTING
    • D04B15/00Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/66Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used

Definitions

  • the invention relates to a multi-system circular knitting machine with electromagnetic needle selection, wherein the needles, longitudinally adjustable and pivotable selection boards are offered at each selection point against the force of a return spring by a pressure lock part to a selection magnet.
  • problems with the safe functioning of the needle selection device also arise with the increase in the machine speeds. Signs of operational wear on the selection boards and selection lock parts have emerged as a source of interference.
  • the invention is based on the object of designing circular knitting machines of the type mentioned at the outset in such a way that there are signs of wear and tear on the selection boards, which affect the functionality could affect the electromagnetic needle selection device, and its negative influence is reduced.
  • the object is achieved in that the needle locks and the circuit board locks of all systems are arranged one above the other on a common support ring, which rests on individual ribs on a lock carrier plate of the machine frame, that the selection magnets through the space formed between the ribs between the support ring and the
  • the lock carrier plate can be inserted in a region lying radially within the selection boards and the magnet holder can be anchored to the support ring and that the board locks for each needle selection point have two pressure lock parts acting on the selection boards and offset with respect to one another in the axial direction of the machine.
  • the selection magnets can be used, removed and, above all, readjusted without removing the associated system locks.
  • One of the two pressure lock parts effects the main pivoting movement of the selection boards in the direction of the selection magnet.
  • the second cam which is expediently arranged so as to be adjustable, then brings about the precise offer by pressing the selection board onto the selection magnet, with a slight overpressure advantageously being able to result in an elastic deflection of those supported at their pivot point on the groove base and at their free end on the selection magnet Selection boards done.
  • the first pressure lock part acts on the rectilinear end region of the shaft of the selection board, which on the opposite side in the end region has the magnetic armature surface.
  • the selection board which also serves as a needle pusher, can also perform a longitudinal movement unhindered during its pivoting movement triggered by the first pressure lock part.
  • the second pressure lock part then advantageously acts on the expulsion foot of the selection board which is arranged at a distance from the end of the selection board, as a result of which the selection board can bend elastically when slightly pressed over.
  • the main wear on the selection board takes place on the shaft area of the selection board, where the first pressure lock part engages.
  • the wear on the output foot and on the second cam acting there remains low, that is to say on the parts which ultimately determine the pressing position of the selection board.
  • the guide webs of the needle cylinder can have a recess on the outside of the height of the first pressure lock part of the needle selection points, into which the first pressure lock part can be immersed. This means that there is no load on the board base at this point, the selection boards cannot tilt laterally between the webs and they are fully guided between the webs. If the board foot meets the second pressure lock part, it is already partially immersed between the webs. Even with fine machine divisions and thin board bars, there is no need to fear bending the selection boards sideways.
  • the formation of the two pressure lock parts also saves space on the circumference of the systems because the pivoting and the longitudinal displacement of the selection boards can be partially overlapped.
  • the operational reliability of the selection of needles in the circular knitting machine designed according to the invention can additionally be increased in that the circumferential area of the machine which is occupied by the selection magnets arranged radially inside the selection board ends is closed inwards by an annular jacket made of magnetically non-conductive material attached to the needle cylinder. This avoids secondary magnetic return circuits via the needle cylinder, and the entire magnetic energy is available at the magnetic poles to act on the selection boards.
  • the magnet holder which can be anchored to the support ring can consist of a web, in particular arranged radially adjustable and tiltable on an adjusting plate, on the inner end of which a magnetically non-conductive part with the selection magnet is placed, which has radially outwardly directed soft iron pole pieces.
  • the thermal expansion experienced by the web anchored to the support ring and which takes place radially inward is practically canceled out by the thermal expansion which the soft iron pole shoes experience radially outward in the opposite direction.
  • the radial section according to FIG. 1 shows the needle cylinder 10 of a circular knitting machine with a circumferential cylinder support ring 11 with an external drive ring gear 12 and a machine frame part 13 with a stationary lock plate 14, over which there is a support ring 15 at a distance, which also has ribs 16 arranged at intervals the lock plate 14 is connected.
  • a lower plate lock carrier 17 and an upper needle lock carrier 18 are fastened on the support ring 15, which can be removed individually. Both lock carriers can also be combined into a single structural unit.
  • the needle lock carrier 18 is fastened to the circuit board lock carrier 17 by means of a fastening screw 19, while the circuit board lock carrier 17 is anchored to the supporting ring 15 via a fastening screw 20.
  • needles 21 and selection boards 22, which act as needle pushers, are guided between inserted webs 23 and are shown enlarged in FIG. 2.
  • the needle cylinder 10 ends below at the level of the support ring 15, where in the rotating machine part radially within the guide grooves formed by the guide webs 23 for the needles 21 and the selection boards 22, free space 24 is created, which is accessible via the free spaces located between the ribs 16 and in which the selection magnets 25 of the needle selection points are arranged.
  • the free space 24 is delimited on the inside by an annular jacket 26 made of magnetically non-conductive material, which is fastened between the needle cylinder 10 and the cylinder support ring 11 and which excludes a magnetic short-circuiting of the selection magnets 25 via the needle cylinder.
  • the selection magnets 25 are one at the end web-like magnetic holder 27 which is arranged via an adjusting plate 28 on the underside of the stationary support ring 15 by means of two set screws 29.1 and 29.2 in the radial direction and tiltable and lockable by means of a clamping screw 30, the two set screws 29.1, 29.2 in a holding plate fastened to the support ring 15 31 are stored.
  • Fig. 2 shows the lock parts of the blank lock carrier 17 and the needle lock carrier 18 of two adjacent systems of the circular knitting machine.
  • a circuit board retaining ring 32 is arranged in an annular groove on the circuit board lock carrier 17 and prevents the selection boards 22 from falling out of their guide grooves in the needle cylinder 10 when the circuit board lock carrier 17 is removed.
  • the needle lock has a wedge lock part 33 with a counter-lock part 34, which can be adjusted together via an adjusting disc 35 shown in FIG. 1.
  • the needle lock parts act on a foot 21.1 of the needles 21.
  • the selection boards 22, which act as needle pushers, are provided with a head 22.1, an expulsion foot 22.2, a pivot point 22.3 and a return spring 35.
  • an anchor surface 22.4 is formed on the rear side and on the opposite front side a rectilinear run-up surface 22.5 is formed on the shaft of the selection board 22, which permits a simultaneous longitudinal and pivoting movement of the selection board 22.
  • a second run-up surface 22.6 is located on the output foot 22.2.
  • the circuit board lock carrier 17 has an expulsion lock part 36 for the expulsion foot 22.2 and two mutually offset pressure lock parts, namely a first pressure lock part 37 and a second pressure lock part 38, the effect of which is explained in more detail below in connection with FIGS. 3-8.
  • the two pressure lock parts 37 and 38 are located in the direction of passage of the selection boards 22 indicated by an arrow 39 in front of the selection area A of the selection magnet 25 of the needle selection point assigned to the system in question.
  • Further lock parts 40 and 41 serve to act on the board head 22.1 or to secure the board shaft in the region of its pivot point 22.3.
  • the lock parts 40 clear the way for an expulsion movement of the selection boards 22 upward and guide them downward again on the board head 22.1 into the passageway 40.1, at the height of which the needle selection takes place at the needle selection points. There is a certain play between the lock part 41 and the shaft of the selection boards 22. The lock part 41 thus does not act as a pressure lock part.
  • FIGS. 5 shows an overall view of a selection board 22 in position V according to FIGS. 3 and 4, which, as a board selected at a previous needle selection point, has run up with its drive-out foot 22.2 onto the drive-out edge 36.1 of the drive-out lock part 36 and has brought the associated needle 21 into its knitting position Has.
  • the shaft end region is located shortly before it strikes the first pressure lock part 37.
  • FIGS. 5-8 show that the guide webs 23 have a recess 44 at the level of the first pressure lock parts 37, into which the pressure lock part 37 can dip.
  • the lower end 23.1 of the guide webs 23 projects beyond the lower edge of the needle cylinder 10 into the space 24 occupied by the selection magnet 25.
  • the projecting end 23.1 of the Guide webs 23 are provided on the back radially inward with a bevel 45 so that the selection magnets 25 are not short-circuited via the guide webs.
  • FIG. 6 shows a selection plate 22 remaining in the concentric position in the position VI according to FIGS. 3 and 4. Its output foot 22.2 leaves the recess 43 of the output lock part 36 and its contact surface 22.5 begins to run onto the first pressure lock part 37.
  • Fig. 7 shows a selection board 22 in the position VII of Fig. 3 and 4. It has already run a distance with its contact surface 22.5 on the first pressure lock part 37 and has been pivoted accordingly about its pivot point 22.3, and it has now reached the point , where their outlet foot 22.2 meets the second pressure lock part 38 with its run-up surface 22.6. The highest point of the first pressure lock part 37 has been reached, and the further pivoting movement of the selection board 22 is brought about by the second pressure lock part 38 via the output foot 22.2.
  • FIG. 8 shows the circuit board 22 in the position VIII according to FIGS. 3 and 4.
  • the expulsion foot 22.2 has reached the highest point of the second pressure lock part 38.
  • the plate end is pressed with its anchor surface 22.4 against the selection magnet 25, with a slight overpressure and thus a slight bending of the board shaft advantageously taking place between its pivot point 22.3 and its adjacent anchor surface 22.4 in order to compensate for manufacturing tolerances and wear.
  • the circuit board 22 extends beyond the shedding edge 38. 1 of the second pressure lock part 38 shown in FIG.
  • Fig. 9 shows the structure of the selection magnets 25. They have in a known manner two soft iron pole legs 46 and 47, between their ends and anchored in a magnetically non-conductive part 48, a permanent magnet 49 is arranged, while between the other two and free ends the soft iron pole shoes 46 and 47 a sapphire bar 50 serving as a sliding bar is arranged, against which the anchor surface 22.4 of the selection boards 22 comes to rest. On the soft iron pole pieces 46 and 47, a discharge winding 51, 51.1 is arranged, which receives current pulses which cancel the attraction force exerted by the permanent magnet 49 and, by reversing the magnetic field, causes the end section of the circuit boards 22 to be released.
  • the magnetically non-conductive part 48 is fastened on a magnet holder 27 which is anchored to the support ring 15, as has already been described in connection with FIG. 1. Both the magnet holder 27 and the pole shoes 46, 47 are directed radially. The longitudinal expansion in the direction of the arrow 53 shown when the magnet holder 27 is heated is compensated for by an opposite expansion movement of the soft iron pole shoes in the direction of the arrow 52 shown, so that the adjusted position of the selection magnet 25 relative to the orbit of the selection boards 22 is constant remains held. Otherwise, the machine structure permits readjustment of the selection magnets 25 or the replacement of individual magnets at any time without the prior removal of the lock carrier of a system.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP88103605A 1987-04-14 1988-03-08 Métier à tricoter circulaire à plusieurs systèmes et sélection d'aiguiles électromagnétique Expired - Lifetime EP0286827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3712673 1987-04-14
DE3712673A DE3712673C1 (de) 1987-04-14 1987-04-14 Mehrsystemige Rundstrickmaschine mit elektromagnetischer Nadelauswahl

Publications (3)

Publication Number Publication Date
EP0286827A2 true EP0286827A2 (fr) 1988-10-19
EP0286827A3 EP0286827A3 (fr) 1991-01-16
EP0286827B1 EP0286827B1 (fr) 1993-02-24

Family

ID=6325615

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103605A Expired - Lifetime EP0286827B1 (fr) 1987-04-14 1988-03-08 Métier à tricoter circulaire à plusieurs systèmes et sélection d'aiguiles électromagnétique

Country Status (6)

Country Link
US (1) US4905484A (fr)
EP (1) EP0286827B1 (fr)
JP (1) JPS63270847A (fr)
DD (1) DD284727A5 (fr)
DE (2) DE3712673C1 (fr)
ES (1) ES2037751T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496133A1 (fr) * 1990-12-21 1992-07-29 MATEC S.r.l. Métier à tricoter circulaire
CN102560861A (zh) * 2011-12-20 2012-07-11 常州思成凯业精密制针有限公司 一种改进的挺针片

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915684C1 (fr) * 1989-05-13 1990-05-23 Theodor Groz & Soehne & Ernst Beckert Nadelfabrik Kg, 7470 Albstadt, De
DE3928986C2 (de) * 1989-09-01 1998-08-27 Sipra Patent Beteiligung Strickmaschine
DE69116289T2 (de) * 1990-10-05 1996-09-05 Matec Srl Nadelauswahlvorrichtung an einer Rundstrickmaschine mit elastischen Nadelstössern
IT1252161B (it) * 1991-12-03 1995-06-05 Savio Spa Dispositivo per la movimentazione assiale in una macchina circolare damaglieria degli aghi non sollevati dai jack
ITBO940161A1 (it) * 1994-04-15 1995-10-15 Matec Srl Dispositivo di selezione per selettore elastico per aghi in macchina tessile circolare
IT1282477B1 (it) * 1995-03-30 1998-03-23 Matec Srl Selettore elastico con relativo sottoago per aghi in macchina tessile circolare
DE19535087B4 (de) * 1995-09-21 2007-03-22 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Rundstrickmaschine
DE19541407A1 (de) * 1995-11-07 1997-05-15 Hans Ruester Gmbh & Co Platine für die Auswahl und Steuerung maschenbildender Bewegungen von Strickwerkzeugen einer Strickmaschine
IT1286207B1 (it) * 1996-09-05 1998-07-08 Matec Srl Sottoago modificato con relativi organi di azionamento per macchine circolari per calze e calzini
DE19636794C1 (de) * 1996-09-11 1998-02-12 Groz Beckert Kg Elektromagnetische Nadelauswahlvorrichtung für Strickmaschinen
DE19720169C2 (de) * 1997-05-14 1999-04-08 Groz Beckert Kg Auswahlplatine
IT1293789B1 (it) * 1997-07-25 1999-03-10 Santoni Srl Dispositivo per la selezione degli aghi, in particolare per la selezione degli aghi del piatto in macchine circolari per
DE19743814B4 (de) * 1997-10-05 2009-01-08 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Strickmaschine
DE19743815B4 (de) * 1997-10-05 2008-05-29 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Steuerplatine für Strickmaschinen
ES2153724B1 (es) * 1997-10-07 2001-08-01 Jumberca Sa Sistema de seleccion de agujas para mquina circular de genero de punto.
TW521105B (en) * 2000-03-31 2003-02-21 Shima Seiki Mfg Knitting member selecting actuator of knitting machine
DE10207879A1 (de) 2002-02-18 2003-08-28 Sipra Patent Beteiligung Rundstrickmaschine zur Herstellung von Plüschwaren
DE10321737A1 (de) 2003-05-09 2004-12-02 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Strickmaschine, insbesondere Rundstrickmaschine, und dafür geeignete Steuerplatine
DE102008061699A1 (de) 2008-12-11 2010-06-17 Sipra Patententwicklungs- Und Beteiligungsgesellschaft Mbh Strickmaschine zur Herstellung von mit Mustern versehenen Strickwaren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2030533A1 (en) * 1969-07-10 1970-11-13 Lebocey & Cie Georges Circular knitting machine needle selection mechanism
FR2179414A5 (fr) * 1972-04-04 1973-11-16 Bonneterie Sa Et
DE2453275A1 (de) * 1973-11-12 1975-05-15 Elitex Zavody Textilniho Vorrichtung an einer rundstrickmaschine zur einstellung einer auswaehlplatine

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
CH396284A (fr) * 1963-02-14 1965-07-31 Dubied & Cie Sa E Procédé pour la sélection individuelle d'organes d'une machine, notamment pour la sélection individuelle des aiguilles d'une machine à tricoter, et dispositif pour la mise en oeuvre de ce procédé
CH424064A (fr) * 1964-10-22 1966-11-15 Dubied & Cie Sa E Dispositif de sélection électromécanique des aiguilles d'une machine à tricoter
DE2316794A1 (de) * 1973-04-04 1974-10-17 Mayer & Cie Maschinenfabrik Strickmaschine mit mustereinrichtung
JPS5421466B2 (fr) * 1973-08-15 1979-07-31
JPS5071958A (fr) * 1973-11-08 1975-06-14
JPS51102151A (fr) * 1975-03-07 1976-09-09 Toyoda Automatic Loom Works
ES439702A1 (es) * 1975-07-24 1977-03-01 Jumberca Sa Perfeccionamientos en los telares de generos de punto.
DE2938835C3 (de) * 1979-09-26 1982-04-01 Schaffhauser Strickmaschinenfabrik, Schaffhausen Nadelsteuer- und -auswahleinrichtung für Strickmaschinen, insbesondere Flachstrickmaschinen
JPS6047948A (ja) * 1983-08-25 1985-03-15 Shimadzu Corp 揮発生成ガストラップ装置
CH659673A5 (it) * 1986-02-18 1987-02-13 Massimo Mozer Meccanismo di selezione totale degli aghi nelle macchine tessili per tessuti a maglia circolari o lineari, a programmazione.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2030533A1 (en) * 1969-07-10 1970-11-13 Lebocey & Cie Georges Circular knitting machine needle selection mechanism
FR2179414A5 (fr) * 1972-04-04 1973-11-16 Bonneterie Sa Et
DE2453275A1 (de) * 1973-11-12 1975-05-15 Elitex Zavody Textilniho Vorrichtung an einer rundstrickmaschine zur einstellung einer auswaehlplatine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496133A1 (fr) * 1990-12-21 1992-07-29 MATEC S.r.l. Métier à tricoter circulaire
US5205139A (en) * 1990-12-21 1993-04-27 Savio S.P.A. Method and device comprising deformable spring contraints for needle selection in a circular knitting machine
CN102560861A (zh) * 2011-12-20 2012-07-11 常州思成凯业精密制针有限公司 一种改进的挺针片

Also Published As

Publication number Publication date
JPS63270847A (ja) 1988-11-08
DD284727A5 (de) 1990-11-21
EP0286827A3 (fr) 1991-01-16
DE3878575D1 (de) 1993-04-01
EP0286827B1 (fr) 1993-02-24
DE3712673C1 (de) 1988-08-25
ES2037751T3 (es) 1993-07-01
JPH0260777B2 (fr) 1990-12-18
US4905484A (en) 1990-03-06

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