WO1997049851A1 - Machine textile comportant un systeme de selection pour elements de travail - Google Patents

Machine textile comportant un systeme de selection pour elements de travail Download PDF

Info

Publication number
WO1997049851A1
WO1997049851A1 PCT/EP1997/002583 EP9702583W WO9749851A1 WO 1997049851 A1 WO1997049851 A1 WO 1997049851A1 EP 9702583 W EP9702583 W EP 9702583W WO 9749851 A1 WO9749851 A1 WO 9749851A1
Authority
WO
WIPO (PCT)
Prior art keywords
holding magnet
textile machine
needle
machine according
elements
Prior art date
Application number
PCT/EP1997/002583
Other languages
German (de)
English (en)
Inventor
Boris Lukic
Original Assignee
Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & 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 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg filed Critical Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg
Publication of WO1997049851A1 publication Critical patent/WO1997049851A1/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 a textile machine, in particular a knitting machine, with controllable work elements, at least one machine part carrying the work elements, at least one work element selection device and at least one holding magnet rigidly attached to the machine part, which holds the work elements in their starting position.
  • Textile machines of this type in particular circular and flat knitting machines, are known, for example, from DE 15 85 206 A2, DE 20 10 973 A2, DE 21 50 360 AI, DE 25 19 896 AI and DE 36 14 220 A2.
  • Arrangements of this type with controllable working elements and an electromagnetic control system are provided in particular for pattern control and as needle selection devices.
  • the needles are selected by acting directly on the individual knitting elements such as needles, sinkers, springs or the like, or by controlling the ferromagnetic parts of the specified knitting elements, the electromagnetic control system moving transversely to the needle output direction relative to the knitting elements located in the needle channels.
  • permanent magnets are provided which hold the working elements in their starting position for selection against the spring force of trigger springs, possibly after action by lock parts.
  • the permanent magnet arranged in the movable control system therefore slides on the working elements or moves over the working elements.
  • the permanent magnet slides along the working elements until the control system with its selection system reaches the knitting element that is to be selected.
  • This selection area is as wide as the working element and separated from the poles of the permanent magnet by a narrow gap, see above that the magnetic field of the permanent magnet can be neutralized in this area by means of a control coil. Under the action of the spring force of a trigger spring, the selected working element is therefore removed from the selection system, while the other working elements are still held in their position by the magnetic poles of the permanent magnet.
  • the magnetic flux in the working elements depends on the number of working elements still adhering or selected to the selection system, so that the electromagnetic attraction force acting on the working elements also changes.
  • the magnetic flux of the control coil with which the permanent magnet is compensated in the selection area must also be changed accordingly. From DE 36 14 220 A2 it is known to provide a Hall probe for measuring the current magnetic flux and to change the current applied to the control coil of the electromagnet as a function of the output signal of the Hall probe.
  • a textile machine in which an electromagnetic control system is guided over a needle bed, with stationary intermediate elements made of ferromagnetic material in one in each case in the needle bed for each needle channel or each needle or plate essentially magnetically non-excitable environment are provided in order to conduct a magnetic force flow through these intermediate elements onto the needle or the circuit board.
  • the production of such a control system or of such a needle bed is complex due to the stationary intermediate elements in the needle bed.
  • a knitting machine of the type mentioned in which a holding magnet holding the working elements in their starting position is rigidly attached to the needle bed.
  • the needle selection device has a controllable selection magnet and can be moved without contact over at least one outer surface of the working elements. If a working element is to be selected, the selection magnet becomes excites and generates a magnetic force flow which is opposite to the magnetic force flow of the holding magnet, so that the working element is released from the holding magnet.
  • the working element for example a circuit board or a needle, has a spring element or a resilient part for the pretension, which moves the working element by its resilient action when the holding force of the holding magnet is released by actuating the selection magnet from the holding magnet so that the feet of the working element can be gripped and controlled by corresponding lock parts.
  • This known arrangement has the disadvantages already described above in connection with other known textile machines that the force for releasing the respective working elements depends on how many working elements are still attached to the holding magnet. If there are little working elements adhering to the holding magnet, this is due to electromagnetic force flow passing through it is large, so that a larger magnetic force flow in the opposite direction has to be applied by the electromagnet in order to select one of the working elements still adhering to the holding magnet.
  • the known arrangement has proven itself very well in practice, uncertainties arise in individual cases with regard to a reliable selection of the working elements for the reasons mentioned.
  • the invention has for its object to provide a textile machine with a selection system which has a very simple structure and ensures a reliable selection function even over long lifetimes.
  • the holding magnet is arranged between the working elements and the spring elements. It is particularly advantageous if a magnetic pole of the holding magnet elements and a counter-magnetic pole of the holding magnet facing the spring elements.
  • the working elements are in their initial position on the magnetic pole of the holding magnet facing them, and, in the case of selected working elements, the spring elements assigned to these working elements on the counter magnetic pole of the holding magnet.
  • either the working element or the spring element of a pair of working elements-spring elements is in contact with the holding magnet, so that the total number of parts in contact with the magnet is always the same, regardless of the number of selected working elements.
  • the counterforce to be used for releasing or the magnetic force flow for releasing the working elements in the opposite direction to the magnetic force flow of the holding magnet is therefore always constant, regardless of the number of selected working elements, so that the security of the selection Operation is significantly improved.
  • Textile machine also consists in switching the working elements safely and reliably bistably. In the starting position of the working elements, if they are not selected, they are and remain securely and reliably adhering to the magnetic pole of the holding magnet facing the working elements. However, if the work item is selected, i.e. If the working element is released by this magnetic pole, it is pressed away from the holding magnet by the spring element arranged on the other side of the holding magnet when the magnetic
  • Invention ensures the defined position of the working element in the selected position not only by the spring force but also additionally by the magnetic force which the holding magnet exerts on the spring element. In addition to the spring force, there is also the magnetic force. As a result, the force which acts to stabilize the position of the selected work element is considerably higher in the present invention than in the conventional devices, so that the defined position of the work element is also safe and stable in its selected position.
  • the working elements are each connected to their respective associated spring elements via at least one connecting element.
  • the spring force of the respective spring element is transmitted to the associated working element via these connecting elements when the working element is selected, or the force exerted on the working element is transferred to the spring element when the working element is returned to the starting position Way is lifted from the holding magnet.
  • the connecting element preferably lies only on the working element without being firmly connected to it. In this way, the working element is displaceable relative to the connecting element. In the event that Working element is a needle of a knitting machine, the working element can be moved by means of the knitting lock.
  • the connecting elements are preferably guided in guides and made of non-magnetic material, for example plastic.
  • one end of the spring elements is connected to the machine part carrying the working elements, in the case of a flat knitting machine to the needle bed, and the other end of the spring elements is connected to the associated connecting elements.
  • the spring elements are preferably magnetically separated from the machine parts carrying the working elements, so that in the case of a flat knitting machine no magnetic force flow leads through the machine parts, for example through the needle beds.
  • the spring elements are cut out or punched out of a spring plate in a comb-like manner, so that the spring force of the individual spring elements is very defined and constant, and the spring elements can be manufactured in a simple manner.
  • the assembly and attachment of a comb-like spring plate is considerably easier than the attachment of individual spring elements.
  • the selection device on the side of the working elements facing away from the holding magnet can be moved over them without contact.
  • the selection device for example electromagnets, which are the magnetic ones
  • control elements are provided in front of the selection device which bring the work elements into their starting position before they are selected.
  • Knitting machines are preferably pressure lock parts which press the working elements down into the needle channels and thereby bring them into contact with the holding magnet and into their starting position before the selection process.
  • the textile machine is a knitting machine, and in particular a flat knitting machine with needles as controllable working elements and needle beds as the machine parts carrying the needles.
  • the holding magnet is arranged in a very advantageous manner on the side of the needle bed facing away from the needle bed comb.
  • the needle bed can therefore be made particularly short, and the needle protrudes from the needle bed on the side facing away from the needle bed comb and can be brought into and out of contact with the holding magnet in the manner described above.
  • the invention is particularly advantageous in view of the fact that no special shapes of the needles, such as needle feet or the like, are required for the selection, and also no specific location in the longitudinal direction of the needle is required or provided for the selection.
  • the holding magnet is attached to the needle bed via a fastening element consisting of non-magnetic material.
  • a fastening element consisting of non-magnetic material.
  • the spring elements for example the spring comb
  • the fastening element so that the assembly, consisting of holding magnet, spring elements and / or connecting elements, can be manufactured and preassembled separately and can be attached to the needle bed as a finished assembly .
  • a further advantage of the invention which consists in the fact that the force exerted by the holding magnet and / or by the selection device on the needle and / or the spring is always within a closed, mechanical system occurs, so that when a force is exerted on the leaf spring or the needle, the counterforce is transmitted to the needle bed, that is to say, for example, not to the machine frame or other parts located outside of this mechanical system.
  • the selection device is arranged on a lock chute above the needles in the region of the holding magnet. This means that the dimensions of the lock carriage do not extend significantly beyond the bed width. pass.
  • the lock carriage can therefore be made very short both transversely to the direction of the carriage movement and in the direction of carriage movement.
  • the selection device preferably has at least one controllable selection magnet which generates a magnetic force flow opposite the magnetic force flow of the holding magnet for the optional release of the respective needle.
  • control element with which the needles are brought into their starting position before the selection process is a pressure lock part.
  • At least one holding magnet consists of two holding magnet webs which have different polarities, are arranged next to one another and hold the working elements in their starting positions in an alternating sequence.
  • neighboring working elements lie in their respective starting positions on different holding magnet webs.
  • the holding magnet webs with projections in the support areas of the working elements, the projections of the one holding magnet web preferably lying between the projections of the other holding magnet web.
  • This embodiment of the holding magnet is particularly reliable in the selection, and the risk of crosstalk even with high fineness and high working speeds is averted.
  • FIG. 1 shows a schematic cross-sectional illustration through a textile machine according to the invention using the example of a flat knitting machine
  • FIG. 2 shows a schematic illustration of a lock carriage as can be used in connection with the present invention.
  • FIG 3 shows a cross section through a needle bed to show the assignment of the needle or the needle bed to the lock slide.
  • Figure 1 shows a cross section through the needle beds 1, 1 'and the lock carriage of a flat knitting machine.
  • the needle beds 1, 1 ' are arranged in a roof-like manner with respect to one another in the usual manner.
  • Two locks 3, 3 ' are mechanically connected to one another via a slide bracket 4 and slide or roll on rails 5, 5' which are provided on the machine frame 2. Since the design of the needle beds 1, 1 ', the additional devices attached to the needle beds and the locks 3, 3' are identical, the details of the flat knitting machine according to the invention will now only be described in connection with the needle bed 1 and the slide 3.
  • a needle 7, 7 ' is located in a needle channel 6, 6 * of the needle bed 1 or 1'.
  • the needle passage 6, 6 ' is supplied to the needle-bed comb 8, bed 8 • applied end of the needle 1, 1' lower down, so that the needle 7, 7 'and its butt 9, 9 * in the needle bed 1, l 1 can sink.
  • a holding magnet 10, 10' is fastened by means of a fastening element 11, 11 ', which in the illustrated embodiment consists of two holding magnet webs 12, 12' and 13, 13 'and one intermediate element 14, 14 'consisting of non-magnetic material.
  • the two holding magnet webs 12, 12 'and 13, 13' have different polarities, and the needles 7, 7 'are alternately changed by the holding magnet webs 12, 12' and 13, 13 'in alternating order held in their starting positions. Adjacent needles 7, 7 'therefore rest in their respective starting positions on different holding magnet webs 12, 12' and 13, 13 ', respectively.
  • the holding magnet webs 12, 12 'or 13, 13' preferably have projections in the support areas for the needles 7, 7 ', which are alternately between projections of the respective other holding magnet web. This type of design of a holding magnet is particularly advantageous with regard to the safe and reliable selection without the risk of crosstalk even with high fineness and high working speeds.
  • a selection device 15, 15' is provided in or on the lock 3, 3 ', to which the needle 7, 7' adheres in the selected state, so that the needle foot 9, 9 'engages with lock parts 16, 16' of the lock 3, 3 ', that is to say is selected.
  • a spring element 17, 17 ' is fixed with its one end 18, 18' on the side facing away from the needle bed 1, 1 '. increases.
  • the spring element 17, 17 ' is on the side of the holding magnet 10, 10' facing away from the needle 7, 7 'parallel to the needle 7, 7' in contact with the holding magnet 10, 10 'if, as in the example of the needle bed 1, 1 'is shown, the needle 7, 7' is selected.
  • the arrangement of the other needle bed 1 ' corresponds to that of the needle bed 1, but in the arrangement shown in connection with the needle bed 1 the needle 7' is in the basic position, that is to say the unselected position in which it sinks into the needle bed 1 * is and her needle foot 9 'is not in engagement with lock parts 16' of the lock 3 '.
  • the needle 7 ' is held in its basic position by the holding magnet 10' and the spring element 17 'is pressed away from the holding magnet 10' due to the connecting element 20 'and is not in contact with it.
  • the connecting elements 20, 20 ' each shown perpendicular to the direction of the blade, for each needle 7, 7' are offset in the needle drive direction for reasons of space.
  • the needle position of the needle 7 • of the needle bed 1 ' the needle 7' is held in the unselected state, that is to say in its basic position, by the holding magnet 10 'and bears against it. In this position, the needle is held securely and reliably by the magnetic force of the holding magnet 10 *.
  • the needle 7, 7 ' For the selection of the needle 7, 7 ', at least one selection magnet of the selection device 15, 15' is excited, which generates a magnetic force flow which is opposite to the magnetic force flow of the holding magnet 10, 10 'and weakens or cancels it.
  • the needle 7, 7 ' is released from the holding magnet 10, 10' and, due to the spring action of the spring element 17, 17 ', is pressed away from the holding magnet 10, 10' via the connecting element 20, 20 '.
  • the spring element 17, 17 'on the other side of the holding magnet 10, 10' comes into contact with it and is attracted and held magnetically in this position.
  • a secure fixation and position is also ensured.
  • the inventive arrangement of the holding magnet 10, 10 'between the needle 7, 7' and the spring element 17, 17 * results in a stable position or switching of the needle 7, 7 ', with which the secure one Position of the needle 7, 7 'is guaranteed both in the non-selected and in the selected state.
  • FIG. 2 shows a lock in the basic position, which can be used in connection with the present invention and the exemplary embodiment shown in FIG. 1.
  • a cross section through the needle board 1 is shown in a corresponding enlargement in addition to the lock 3, in which the needle 7 is in the unselected state. 17

Landscapes

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

Abstract

L'invention concerne une machine textile, notamment une machine à tricoter, comportant des éléments de travail (7, 7') pilotables, au moins une partie (1, 1') de la machine qui porte des éléments de travail (5, 6), au moins un système de sélection d'éléments de travail (15, 15'), au moins un aimant de retenue (10, 10') fixé de manière rigide sur la partie (1, 1') de la machine, qui maintient les éléments de travail (7, 7') dans leur position initiale et au moins un élément à effet ressort (17, 17') associé à chaque élément de travail (7, 7'). On parvient à une sélection particulièrement fiable des éléments de travail (7, 7') avec une complexité réduite en termes de mécanique et une structure compacte réduite, si l'aimant de retenue (10, 10') est placé entre les éléments de travail (7, 7') et les éléments à effet ressort (17, 17').
PCT/EP1997/002583 1996-06-26 1997-05-21 Machine textile comportant un systeme de selection pour elements de travail WO1997049851A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996125652 DE19625652A1 (de) 1996-06-26 1996-06-26 Textilmaschine
DE19625652.6 1996-06-26

Publications (1)

Publication Number Publication Date
WO1997049851A1 true WO1997049851A1 (fr) 1997-12-31

Family

ID=7798119

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/002583 WO1997049851A1 (fr) 1996-06-26 1997-05-21 Machine textile comportant un systeme de selection pour elements de travail

Country Status (2)

Country Link
DE (1) DE19625652A1 (fr)
WO (1) WO1997049851A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010056426B4 (de) 2010-12-28 2014-05-15 H. Stoll Gmbh & Co. Kg Strickmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614220C1 (de) * 1986-04-26 1987-10-01 Stoll & Co H Steuermagnetanordnung fuer eine Mustervorrichtung an Strickmaschinen zur elektrisch gesteuerten Nadelauswahl
WO1992002672A1 (fr) * 1990-08-03 1992-02-20 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Machine textile
DE4225655A1 (de) * 1992-08-03 1994-02-10 Schieber Universal Maschf Textilmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA544829A (fr) * 1957-08-13 J. Mccreary Harold Tubes a noyau magnetique ayant des caracteristiques a demarrage automatique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3614220C1 (de) * 1986-04-26 1987-10-01 Stoll & Co H Steuermagnetanordnung fuer eine Mustervorrichtung an Strickmaschinen zur elektrisch gesteuerten Nadelauswahl
WO1992002672A1 (fr) * 1990-08-03 1992-02-20 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Machine textile
DE4225655A1 (de) * 1992-08-03 1994-02-10 Schieber Universal Maschf Textilmaschine

Also Published As

Publication number Publication date
DE19625652A1 (de) 1998-01-08

Similar Documents

Publication Publication Date Title
EP1704574A1 (fr) Motorisation lineaire electromagnetique
DE2439161C3 (de) Elektronische Nadelauswählvorrichtung für eine Rundstrickmaschine
DE1635848B2 (de) Mustervorrichtung für Rundstrickmaschinen mit umlaufenden Nadelträgern
DE102006009311A1 (de) Bremsvorrichtung für Linearmotor und Verfahren zur Positionierung eines beweglichen Abschnitts des Linearmotors
EP0652987B1 (fr) Machine textile
EP3487049B1 (fr) Moteur linéaire á flux transversal
EP0028314B1 (fr) Dispositif de déclenchement électromagnétique, en particulier pour l'actionnement de marteaux d'impression
DE4024742C2 (de) Strickmaschine
WO1997049851A1 (fr) Machine textile comportant un systeme de selection pour elements de travail
DE3831032A1 (de) Elektromagnetischer nadelauswaehler fuer rundstrickmaschinen
DE2938835C3 (de) Nadelsteuer- und -auswahleinrichtung für Strickmaschinen, insbesondere Flachstrickmaschinen
CH669225A5 (de) Fadenfuehrersteuervorrichtung an einer flachstrickmaschine.
EP1643026B1 (fr) Machine à tricoter avec un système magnétique de sélection d'aiguilles pour produire des tissus tricotés à motifs
WO1997049852A1 (fr) Machine textile comportant un systeme de selection pour elements de travail
EP0528916B1 (fr) Machine a tricoter
DE2556814A1 (de) Auswaehlvorrichtung fuer strickmaschinen
DE19508755C1 (de) Flachstrickmaschine
DE2150367C3 (de) Steuermagneteinheit zur elektromagnetischen Einzelauswahl von Strickelementen in Strickmaschinen
DE4306400A1 (de) Textilmaschine
DE1585001C3 (de) Vorrichtung zum individuellen Auswählen von programmsteuerbaren Teilen einer Maschine, insbesondere von Nadeln einer Strickmaschine
AT337339B (de) Einrichtung zur auswahl von wirkelementen an strickmaschinen
DE2222408B2 (de) Flachstrickmaschine
DE2550921A1 (de) Legeschienen-anordnung fuer eine raschel-kettenwirkmaschine
DE2150367B2 (de) Steuermagneteinheit zur elektromagnetischen Einzelauswahl von Strickelementen in Strickmaschinen
CH548469A (de) Einrichtung zur individuellen betaetigung von musterbildenden wirkelementen einer strickmaschine.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 98502164

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase