WO1981000730A1 - Dispositifs d'actionnement de selection electronique dans des machines a coudre - Google Patents

Dispositifs d'actionnement de selection electronique dans des machines a coudre Download PDF

Info

Publication number
WO1981000730A1
WO1981000730A1 PCT/GB1980/000138 GB8000138W WO8100730A1 WO 1981000730 A1 WO1981000730 A1 WO 1981000730A1 GB 8000138 W GB8000138 W GB 8000138W WO 8100730 A1 WO8100730 A1 WO 8100730A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
rockers
rocker
actuator
projections
Prior art date
Application number
PCT/GB1980/000138
Other languages
English (en)
Inventor
J Trautner
Original Assignee
Bentley Alemannia Ltd
J Trautner
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 Bentley Alemannia Ltd, J Trautner filed Critical Bentley Alemannia Ltd
Publication of WO1981000730A1 publication Critical patent/WO1981000730A1/fr

Links

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

  • the invention relates to actuators for electronic selection in knitting machines such as for example V-bed flat or circular knitting machines. Background of invention
  • Actuators may have a plurality of solenoids with associated rockers with projecting front ends for engaging pattern butts on jacks in tricks of a needle bed.
  • the actuators are fixed with respect to the cam system and are operated at high frequenices during knitting when the actuators and jacks move at high relative speeds.
  • a form of actuator is known on certain types of V-bed machines using monostable solenoids incorporating a coil and permanent magnet made by a West-German company Harting.
  • Six rockers are mounted, spaced from one another with parallel rocking axes.
  • the rockers are of metal and have at the rear extensions with a recess for gripping an end of a pivotable armature mounted inside the coil.
  • the solenoids are arranged in a T-shaped configuration when seen fron above.
  • the armature ends converge to reception places inside the respective extensions of the rockers, which extensions lie substantially in one line.
  • the individual rockers are spaced to permit their movement in opposite senses when required.
  • a difficulty is the dynamic behaviour and irregularities therein occurring at high knitting speeds or after prolonged use of the actuators.
  • the rockers move through a dead centre position and have their movement limited by parts of the solenoid.
  • Figure 1 shows a rear view of an actuator according to the invention with a lid removed;
  • Figure 2 shows a section along line II-II in Figure 1;
  • Figure 3 shows a side view of an individual
  • the solenoids 2 have (see Figure 3) an outer bracket 8 with screw holes 10 for mounting the solenoids 2 on a plate 12, and inner brackets 14 mounting a coil 16. At the top there is a permanent magnet 18. The travel of the movable end of the armatures 6 is limited by inturned edges of the brackets 14. Control pulses are supplied to the coils 16 by a cable introduced through a hole in a lid 20.
  • the lid 20 and the plate 12 with its solenoids 2 are screwed to the top of a housing 22.
  • a number of rocker shafts 23 are retained in extensions 26 on the front of the housing 22.
  • Rockers 24 are of a plastics material and comprise rear lever extensions 28 with recesses for receiving ends of the armatures 6, These extensions 28 are spaced sideways as can be seen in Figure 4 and are on a sleeve 30 surrounding the shafts 24, The sleeve 30 lies against a plastics bush 31 which holds the sleeve 30 in the desired position between the extensions 26.
  • the sleeves 30 and bushes 31 are closely adjacent so as to substantially protect the solenoids 2 in the inside of the housing 22 from the surroundings of the housing 22.
  • the rockers 24 also have front extensions 32 with a wear resistant metal member 34 moulded into the extensions 30 at the front. Because of the combination of the sleeves 30 and bushes 31 along the rockers shafts 23, one size of bush 31 and two mouldings for the rockers 32, provide all the variations in rear extension position necessary for a six-high actuator.
  • the actuators are compact. The space between adjacent extensions 32 and bushes 31 is small. As seen in Figure 1, two or more actuators can be mounted closely adjacent on a cam carriage 36. Each armature 8 is connected to its rocker 24 in an identical. manner so that the dynamic behaviour of the different rockers 24 is very similar. Each armature 6 is subject to the same sort of low friction with respect to its rocker 24. The rockers and armatures wear in the same manner and continue to perform similarly after prolonged use of the actuators.
  • the actuators operate with only very light movable masses: the armature which is of metal but moves through a small angle and a rocker which is of ligh plastics material and moves through a larger angle.
  • the magnetic fields generated by the coils are shielded off from the front of the rockers, the jacks and the needle bed by the plastics sleeves 30 and the bushes 31.
  • the inlaid metal member 34 is thus not magnetised and the collection of metal dust on operating parts outside the housing 22 is reduced. Ingress of dirt into the housing 22 is equally obstructed by the sleeves 30 and bushes 31. Because of the efficient magnetic insulation of the actuator mal-function as a result of induced magnetism on operation parts of the knitting machine are avoided.
  • the actuator is efficient at high cam system speeds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

Un dispositif d'actionnement de selection electronique dans des machines a coudre comprend une pluralite de solenoides (2) et de basculeurs associes (24) ayant chacun des projections arriere (28), cooperant avec une armature (6) d'une bobine (16) du solenoide associe (2) et des projections avant (32) pour cooperer avec des motifs juxtaposes, dans lequel les basculeurs (24) ont chacun (I) un corps en un materiau plastique avec une piece cylindrique s'etendant axialement disposee adjacente et parallele aux corps des autres basculeurs et une projection arriere (28) disposee en differentes positions sur la longueur des differentes pieces cylindriques et engage l'armature (6) du solenoide associe (2), les armatures (6) se deplacant dans le meme plan ou dans des plans paralleles, et (II) un organe metallique (34) fixe sur les projections avant (32) des corps des basculeurs pour engager les motifs juxtaposes.
PCT/GB1980/000138 1979-09-08 1980-09-08 Dispositifs d'actionnement de selection electronique dans des machines a coudre WO1981000730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7931254 1979-09-08
GB7931254 1979-09-08

Publications (1)

Publication Number Publication Date
WO1981000730A1 true WO1981000730A1 (fr) 1981-03-19

Family

ID=10507716

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1980/000138 WO1981000730A1 (fr) 1979-09-08 1980-09-08 Dispositifs d'actionnement de selection electronique dans des machines a coudre

Country Status (2)

Country Link
EP (1) EP0035513A1 (fr)
WO (1) WO1981000730A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279310A2 (fr) * 1987-02-16 1988-08-24 LONATI S.p.A. Dispositif pour la sélection d'aiguilles à un métier à tricoter circulaire pour des bas et semblables
US4790154A (en) * 1986-07-08 1988-12-13 Lonati S.P.A. Device for selecting needles in a circular knitting machine, in particular for stockings
FR2621607A1 (fr) * 1987-10-07 1989-04-14 Nagata Seiki Kk Selecteur electromagnetique d'aiguilles pour machines de tricotage circulaire
US4838049A (en) * 1985-10-14 1989-06-13 Lonati S.P.A. Device for selecting the needles in a knitting machine, particularly for stockings
EP0397254A1 (fr) * 1989-05-11 1990-11-14 SAVIO S.p.A. Dispositif pour la sélection d'aiguilles dans un métier à tricoter circulaire au moyen de leviers pivotants à faible inertie contrôlés électro-magnétiquement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276857B (de) * 1960-07-02 1968-09-05 Erwin Schumm Mustervorrichtung fuer Strickmaschinen
GB1200468A (en) * 1966-11-15 1970-07-29 Karl Flad Improvements in or relating to knitting machines
DE2021480A1 (de) * 1970-05-02 1971-11-11 Karl Flad Vorrichtung zum Steuern der Stoesser von Strickmaschinen
DE2361283A1 (de) * 1972-12-12 1974-07-11 Wildt Mellor Bromley Ltd Mustersteuereinrichtung fuer eine strickmaschine
GB2008157A (en) * 1977-11-08 1979-05-31 Shima Idea Center Co Ltd Flat knitting machine
GB2034360A (en) * 1978-10-10 1980-06-04 Schieber Universal Maschf Electrically controlled selecting devices for the needles of a flat knittin machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1276857B (de) * 1960-07-02 1968-09-05 Erwin Schumm Mustervorrichtung fuer Strickmaschinen
GB1200468A (en) * 1966-11-15 1970-07-29 Karl Flad Improvements in or relating to knitting machines
DE2021480A1 (de) * 1970-05-02 1971-11-11 Karl Flad Vorrichtung zum Steuern der Stoesser von Strickmaschinen
DE2361283A1 (de) * 1972-12-12 1974-07-11 Wildt Mellor Bromley Ltd Mustersteuereinrichtung fuer eine strickmaschine
GB2008157A (en) * 1977-11-08 1979-05-31 Shima Idea Center Co Ltd Flat knitting machine
GB2034360A (en) * 1978-10-10 1980-06-04 Schieber Universal Maschf Electrically controlled selecting devices for the needles of a flat knittin machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838049A (en) * 1985-10-14 1989-06-13 Lonati S.P.A. Device for selecting the needles in a knitting machine, particularly for stockings
US4790154A (en) * 1986-07-08 1988-12-13 Lonati S.P.A. Device for selecting needles in a circular knitting machine, in particular for stockings
EP0279310A2 (fr) * 1987-02-16 1988-08-24 LONATI S.p.A. Dispositif pour la sélection d'aiguilles à un métier à tricoter circulaire pour des bas et semblables
US4856300A (en) * 1987-02-16 1989-08-15 Lonati S.P.A. Device for selecting needles in circular knitting machines for hosiery and the like
EP0279310A3 (fr) * 1987-02-16 1989-11-29 LONATI S.p.A. Dispositif pour la sélection d'aiguilles à un métier à tricoter circulaire pour des bas et semblables
FR2621607A1 (fr) * 1987-10-07 1989-04-14 Nagata Seiki Kk Selecteur electromagnetique d'aiguilles pour machines de tricotage circulaire
US4972686A (en) * 1987-10-07 1990-11-27 Nagata Seiki Kabushiki Kaisha Electromagnetic needle selector for circular knitting machines
EP0397254A1 (fr) * 1989-05-11 1990-11-14 SAVIO S.p.A. Dispositif pour la sélection d'aiguilles dans un métier à tricoter circulaire au moyen de leviers pivotants à faible inertie contrôlés électro-magnétiquement
US5095721A (en) * 1989-05-11 1992-03-17 Savio S.P.A. Needle section device having rocker levers in a circular machine

Also Published As

Publication number Publication date
EP0035513A1 (fr) 1981-09-16

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