DE19504641A1 - Linear actuators, useful esp. for moving knitting machines needles - Google Patents

Linear actuators, useful esp. for moving knitting machines needles

Info

Publication number
DE19504641A1
DE19504641A1 DE1995104641 DE19504641A DE19504641A1 DE 19504641 A1 DE19504641 A1 DE 19504641A1 DE 1995104641 DE1995104641 DE 1995104641 DE 19504641 A DE19504641 A DE 19504641A DE 19504641 A1 DE19504641 A1 DE 19504641A1
Authority
DE
Germany
Prior art keywords
actuators
linear actuators
magnetic
knitting machines
needles
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.)
Withdrawn
Application number
DE1995104641
Other languages
German (de)
Inventor
Peter-Klaus Prof Dr Budig
Andreas Dr Ing Hermeyer
Klaus Dipl Ing Peschke
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.)
Henkel Dorus GmbH and Co KG
Original Assignee
Elektrische Automatisierungs- und Antriebstechnik Eaat Chemnitz 09120 Chemnitz De GmbH
ELEKTRISCHE AUTOMATISIERUNGS U
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 Elektrische Automatisierungs- und Antriebstechnik Eaat Chemnitz 09120 Chemnitz De GmbH, ELEKTRISCHE AUTOMATISIERUNGS U filed Critical Elektrische Automatisierungs- und Antriebstechnik Eaat Chemnitz 09120 Chemnitz De GmbH
Priority to DE1995104641 priority Critical patent/DE19504641A1/en
Publication of DE19504641A1 publication Critical patent/DE19504641A1/en
Withdrawn legal-status Critical Current

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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Linear Motors (AREA)

Abstract

Linear actuators are brought together into sets in such a way that the magnetic inferences of the individual actuators are eliminated. The magnetic flux driven through permanent or electric magnets flows through all the actuators in a series arrangement.

Description

In Rund- und Flachstrickmaschinen werden einige hundert Nadeln durch Mechanismen entsprechend den zu strickenden Mustern nach oben und unten bewegt. Die Mechanismen sind hierzu so ausgebildet, daß die Zeitverläufe der Bewegungen den Strickprozeß entsprechen.In circular and flat knitting machines, several hundred needles are created by mechanisms moved up and down according to the patterns to be knitted. The Mechanisms are designed so that the time courses of the movements Correspond to the knitting process.

Diese Lösung hat den Nachteil, daß die technologische Flexibilität begrenzt ist und das Verschleiß und Geräusche auftreten.This solution has the disadvantage that the technological flexibility is limited and that Wear and noise occur.

Diese Nachteile zu beheben, dient der Einsatz elektrischer Einzelnadelantriebe. Dafür eignen sich Linearmotoren, deren prinzipieller Aufbau in Fig. 1 dargestellt ist.The use of electrical single-needle drives serves to remedy these disadvantages. Linear motors, the basic structure of which is shown in FIG. 1, are suitable for this.

Am magnetischen Rückschluß (1) befinden sich Permanentmagnete (2), diesen steht eine auf einen Träger (3) befestigte stromdurchflossene Wicklung (4) gegenüber. Dieser Träger kann ein Ferromagnet oder ein Isoliermaterial sein. Die Bewegungsrichtung ist durch den Pfeil angegeben. Der magnetische Fluß (5) durchströmt den magnetischen Kreis in der angegebenen Weise. Jeder Aktivator besitzt zwei eigene magnetische Rückschlüsse (1) bzw. (4), die eine entsprechende Abmessung in der y-Richtung erfordern.Permanent magnets ( 2 ) are located on the magnetic yoke ( 1 ). These are opposed by a current-carrying winding ( 4 ) attached to a carrier ( 3 ). This carrier can be a ferromagnet or an insulating material. The direction of movement is indicated by the arrow. The magnetic flux ( 5 ) flows through the magnetic circuit in the manner indicated. Each activator has its own magnetic inferences ( 1 ) and ( 4 ), which require a corresponding dimension in the y direction.

Senkrecht zur Bewegungsrichtung (y-Achse) steht nur sehr wenig Raum zur Verfügung.There is very little space available perpendicular to the direction of movement (y-axis).

Daher sind Lösungen gefragt, die das Maß "a" minimieren.Therefore solutions are needed that minimize dimension "a".

Diesem Ziel dient die Erfindung. Da mehrere 100 Nadelantriebe in der gleichen Ebene nebeneinander anzuordnen sind, soll der Aufbau des magnetischen Kreises so wie in Fig. 2 dargestellt erfolgen. Mehrere oder alle Aktuatoren werden magnetisch in Reihe geschaltet, so daß der magnetische Rückschluß (1) bzw. (4) nur einmal pro Anordnung erforderlich ist.The invention serves this purpose. Since several 100 needle drives are to be arranged next to one another in the same plane, the construction of the magnetic circuit should take place as shown in FIG. 2. Several or all actuators are magnetically connected in series, so that the magnetic yoke ( 1 ) or ( 4 ) is only required once per arrangement.

Das können gruppenweise zusammengefaßte Aktuatoren sein, oder alle Aktuatoren einer Maschine.This can be grouped actuators or all actuators one Machine.

Damit sind in Fig. 2 vorhanden: Die Permanentmagnete (2), die magnetischen Rückschlüsse (1) und (5) und die Wicklung (3). 2 are thus in Fig present. The permanent magnets (2), the magnetic yokes (1) and (5) and the winding (3).

Es ist möglich, den magnetischen Fluß auch mittels Erregerspulen (4), so wie in Fig. 3 dargestellt, anzutreiben. In diesem Fall werden die Permanentmagnete durch Polstücke (2) ersetzt. Von Vorteil ist, daß diese Spulen (4) außerhalb des Bereiches angeordnet sind, in dem die Bewegung stattfindet. Grundsätzlich ist es möglich, die Spulen und ihre Eisenkerne in der gleichen Ebene wie die Magnetpole anzuordnen. Es ist aber auch möglich, sie über einen gewinkelten Kern in eine andere Ebene zu legen (Fig. 4). In Fig. 4 wird der gekröpfte magnetische Rückschluß (1) mit der Erregerspule (2) versehen. Magnetische Rückschlüsse (1) und (5) sind nur noch an den beiden Enden der Anordnung erforderlich. Der magnetische Fluß (6) durchfließt wie in Fig. 3 dargestellt die Anordnung.It is possible to drive the magnetic flux by means of excitation coils ( 4 ), as shown in Fig. 3. In this case, the permanent magnets are replaced by pole pieces ( 2 ). It is advantageous that these coils ( 4 ) are arranged outside the area in which the movement takes place. Basically, it is possible to arrange the coils and their iron cores in the same plane as the magnetic poles. However, it is also possible to place them in a different plane via an angled core ( FIG. 4). In Fig. 4, the cranked magnetic yoke ( 1 ) is provided with the excitation coil ( 2 ). Magnetic conclusions ( 1 ) and ( 5 ) are only required at the two ends of the arrangement. The magnetic flux ( 6 ) flows through the arrangement as shown in Fig. 3.

Claims (5)

1. Lineare Aktuatoren für die Bewegung von Nadeln von Strickmaschinen, dadurch gekennzeichnet, daß mehrere oder alle Aktuatoren einer Maschine zu Paketen so zusammengefaßt werden, daß die magnetischen Rückschlüsse der einzelnen Aktuatoren entfallen und der durch Permanentmagnete oder Elektromagnete angetriebene magnetische Fluß alle Aktuatoren in einer Reihenschaltung durchfließt.1. Linear actuators for the movement of needles of knitting machines, characterized in that several or all actuators of a machine are combined into packages so that the magnetic inferences of the individual actuators are omitted and the magnetic flux driven by permanent magnets or electromagnets all actuators in a series circuit flows through. 2. Lineare Aktuatoren nach Anspruch 1, dadurch gekennzeichnet, daß der magnetische Fluß von Permanentmagneten angetrieben wird.2. Linear actuators according to claim 1, characterized in that the magnetic Flux is driven by permanent magnets. 3. Lineare Aktuatoren nach Anspruch 1, dadurch gekennzeichnet, daß der magnetische Fluß von Elektromagneten angetrieben wird.3. Linear actuators according to claim 1, characterized in that the magnetic Flow is driven by electromagnets. 4. Lineare Aktuatoren nach Anspruch 1, dadurch gekennzeichnet, daß die Elektromagneten in der gleichen Ebene wie die Aktuatoren angeordnet sind.4. Linear actuators according to claim 1, characterized in that the electromagnet are arranged in the same plane as the actuators. 5. Lineare Aktuatoren nach Anspruch 1, dadurch gekennzeichnet, daß die Elektromagneten in einer anderen Ebene als die Aktuatoren angeordnet sind.5. Linear actuators according to claim 1, characterized in that the electromagnet are arranged in a different plane than the actuators.
DE1995104641 1995-02-13 1995-02-13 Linear actuators, useful esp. for moving knitting machines needles Withdrawn DE19504641A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995104641 DE19504641A1 (en) 1995-02-13 1995-02-13 Linear actuators, useful esp. for moving knitting machines needles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995104641 DE19504641A1 (en) 1995-02-13 1995-02-13 Linear actuators, useful esp. for moving knitting machines needles

Publications (1)

Publication Number Publication Date
DE19504641A1 true DE19504641A1 (en) 1996-08-14

Family

ID=7753771

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995104641 Withdrawn DE19504641A1 (en) 1995-02-13 1995-02-13 Linear actuators, useful esp. for moving knitting machines needles

Country Status (1)

Country Link
DE (1) DE19504641A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025765A1 (en) * 1996-01-10 1997-07-17 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Drive with several flat linear motors
DE19849728A1 (en) * 1998-10-28 2000-05-04 Electro Knit Inc Drive system for tightly-packed textile machine moving components has actuators as one-piece permanent magnets and base coils for the moving sections coupled to the components in a compact array
FR2785733A1 (en) * 1998-06-12 2000-05-12 Toyoda Automatic Loom Works Linear motor structure for heddle frame drive of loom, has laminated motors provided with stators whose magnet frames are made integral
US6670730B2 (en) 2001-04-12 2003-12-30 Ballado Investments Inc. Multi-phase linear motor with induction coils arranged on an axis perpendicular to the direction of motion
WO2004008615A1 (en) * 2002-07-15 2004-01-22 Ballado Investments Inc. Multi-phase linear motor with short movable elements
DE10349967A1 (en) * 2003-10-24 2005-06-09 Hauni Maschinenbau Ag Multifunction conveyor drum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997025765A1 (en) * 1996-01-10 1997-07-17 Universal Maschinenfabrik Dr. Rudolf Schieber Gmbh & Co. Kg Drive with several flat linear motors
FR2785733A1 (en) * 1998-06-12 2000-05-12 Toyoda Automatic Loom Works Linear motor structure for heddle frame drive of loom, has laminated motors provided with stators whose magnet frames are made integral
DE19849728A1 (en) * 1998-10-28 2000-05-04 Electro Knit Inc Drive system for tightly-packed textile machine moving components has actuators as one-piece permanent magnets and base coils for the moving sections coupled to the components in a compact array
US6670730B2 (en) 2001-04-12 2003-12-30 Ballado Investments Inc. Multi-phase linear motor with induction coils arranged on an axis perpendicular to the direction of motion
WO2004008615A1 (en) * 2002-07-15 2004-01-22 Ballado Investments Inc. Multi-phase linear motor with short movable elements
DE10349967A1 (en) * 2003-10-24 2005-06-09 Hauni Maschinenbau Ag Multifunction conveyor drum
DE10349967B4 (en) * 2003-10-24 2006-06-14 Hauni Maschinenbau Ag Multifunction conveyor drum

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: UNIVERSAL MASCHINENFABRIK DR. RUDOLF SCHIEBER GMBH

8130 Withdrawal
8170 Reinstatement of the former position
8139 Disposal/non-payment of the annual fee