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WO2008113662A1 - Entraînement de machine à tricoter circulaire - Google Patents

Entraînement de machine à tricoter circulaire Download PDF

Info

Publication number
WO2008113662A1
WO2008113662A1 PCT/EP2008/052350 EP2008052350W WO2008113662A1 WO 2008113662 A1 WO2008113662 A1 WO 2008113662A1 EP 2008052350 W EP2008052350 W EP 2008052350W WO 2008113662 A1 WO2008113662 A1 WO 2008113662A1
Authority
WO
WIPO (PCT)
Prior art keywords
knitting machine
circular knitting
bearing
machine drive
drive according
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.)
Ceased
Application number
PCT/EP2008/052350
Other languages
German (de)
English (en)
Inventor
Detlef GÖRGENS
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.)
IHO Holding GmbH and Co KG
Original Assignee
Schaeffler 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 Schaeffler KG filed Critical Schaeffler KG
Publication of WO2008113662A1 publication Critical patent/WO2008113662A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • D04B15/94—Driving-gear not otherwise provided for

Definitions

  • the invention relates to a drive unit of a circular knitting machine having at least one electric motor.
  • a circular knitting machine is known for example from DE 41 28 372 A1.
  • This machine has a stationary support ring, with which an annular flange body is connected, which together with the support ring forms the bearing surfaces for a trained as a wire ring / ball bearing bearing, by means of which a cylinder drive gear is rotatably mounted in the support ring.
  • the machine has a hub to which another drive gear is connected. Both drive gears are driven by a respective drive pinion, wherein the drive pinions are arranged on a common drive shaft. The drive shaft in turn is driven via a gear in a manner not specified.
  • a further circular knitting machine known from DE 10 2004 058 920 B4 has a common interface unit for a plurality of electric motors incorporated in the belt drive and provided with belt drives, which may contain, for example, a rectifier circuit, in particular a clocked power supply unit.
  • the electric motors are, for example, synchronous AC motors designed as permanent magnet motors.
  • the drive devices of circular knitting machines known from DE 41 28 372 A1 and from DE 10 2004 058 920 B4 each have a non-negligible play.
  • the object of the invention is to provide a circular knitting machine drive which is improved in terms of mechanical precision and reliability compared with the prior art.
  • a circular knitting machine drive with the features of claim 1.
  • a knitting tool carrier which is rotatably mounted relative to a stationary support member of a circular knitting machine, electrically driven directly.
  • the drive is preferably carried out by means of a permanent magnet synchronous motor, wherein an energizable primary part of the electric direct drive is firmly connected to the support member and a permanentmagnetbe adoptedtes secondary part of the electric direct drive fixed to the knitting tool carrier.
  • the electric direct drive is designed as a segment torque motor.
  • a segment-torque motor is known in principle, for example, from DE 102 10 071 A1.
  • the direct electrical drive of the at least one knitting tool carrier allows a very smooth and play-free drive, with both high precision both a left-hand rotation and a clockwise rotation is possible.
  • the timing accuracy, clock speed and the change of the direction of rotation are improved by at least a factor of 10.
  • a roller bearing is suitable for mounting the knitting tool carrier.
  • the knitting tool carrier is mounted by means of a magnetic bearing. It can either be a passive magnetic bearing or an active, adjustable magnetic bearing.
  • the magnetic bearing is preferably designed as a radial-axial bearing.
  • the axial bearing function and the radial bearing function can be realized by mutually orthogonal bearing surfaces. Preferred are conical, i. provided to the bearing axis obliquely Asked bearing surfaces, which take over a combined radial and axial bearing function.
  • each knitting tool carrier is directly electrically driven.
  • the motors used for the direct drive of the mutually concentric knitting tool carriers are preferably likewise arranged concentrically with respect to one another and are cut by a common plane normal to the axis of rotation.
  • the magnetic bearings of the various knitting tool carriers are arranged concentrically with respect to one another, wherein they occupy the same axial space.
  • the magnetic bearing is characterized as well as the motors used for electric direct drive by maintenance-free throughout the service life.
  • the various knitting tool carriers are electronically synchronized with each other, with extremely small speed and angle deviations can be achieved, which can not be achieved with conventional geared constructions.
  • FIG. 1 shows a first embodiment of a circular knitting machine drive
  • FIG. 2 shows a second embodiment of a circular knitting machine drive.
  • FIG. 1 In the embodiment of Figure 1 are on a stationary support member 2, which is fixedly connected to a frame of the circular knitting machine or part of a machine frame, two knitting tool carrier 3, 4 mounted rotatably.
  • the two knitting tool carriers 3, 4 are each independently drivable by means of an electric direct drive 5, 6.
  • Each electric direct drive 5, 6 is designed as a permanent magnet synchronous motor, wherein a current-carrying primary part 7, 8 is attached to the support member 2.
  • the associated secondary part 9, 10 is formed by directly on the knitting tool carrier 3, 4 permanent magnets 11, 12.
  • the secondary parts 9, 10 have no own storage. Between a primary part 7, 8 and the associated secondary part 9, 10, an annular air gap 13, 14 is formed in each case.
  • the knitting tool carrier 3, 4 including the secondary parts 9, 10 are mounted with magnetic bearings 15, 16, which are formed as a radial-axial bearing.
  • Each magnetic bearing 15, 16 is made up of together with the support ring 2.
  • the air gaps 19, 20 formed between the magnets 17, 18 each have a multi-angled shape. This shape results from the contour of the surfaces of the magnets 17, 18, which each have three different bearing surfaces 21, 22, 23.
  • a central bearing surface 21 is located on the surface of an imaginary, symmetrical to the axis of rotation of the circular knitting machine drive 1 cylinder.
  • the bearing surfaces 21 are provided exclusively for receiving radial loads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Knitting Machines (AREA)

Abstract

Un entraînement de machine à tricoter circulaire (1) comprend une pièce de support stationnaire (2) et au moins un support (3, 4) d'outil à tricoter entraîné électriquement, qui est supporté de manière rotative par rapport à la pièce de support (2) au moyen d'un palier (15, 16), en particulier d'un palier magnétique. Pour l'entraînement du support (3, 4) d'outil à tricoter, il est prévu un entraînement électrique direct (5, 6).
PCT/EP2008/052350 2007-03-17 2008-02-27 Entraînement de machine à tricoter circulaire Ceased WO2008113662A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710012868 DE102007012868A1 (de) 2007-03-17 2007-03-17 Rundstrickmaschinenantrieb
DE102007012868.3 2007-03-17

Publications (1)

Publication Number Publication Date
WO2008113662A1 true WO2008113662A1 (fr) 2008-09-25

Family

ID=39265271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/052350 Ceased WO2008113662A1 (fr) 2007-03-17 2008-02-27 Entraînement de machine à tricoter circulaire

Country Status (2)

Country Link
DE (1) DE102007012868A1 (fr)
WO (1) WO2008113662A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259123A2 (fr) * 1986-08-28 1988-03-09 Draper Corporation Métier à tricoter circulaire à trame
EP0485924A1 (fr) * 1990-11-15 1992-05-20 S.F.I.M. S.r.l. Métier à tricoter circulaire à cylindre unique avec commande de cadran d'aiguilles amélioré, notamment pour la fabrication de chaussettes, bas et pareils
WO1993001340A1 (fr) * 1991-07-04 1993-01-21 A.C.M. Azienda Costruzione Motori S.A.S. Di Racca Anita & C. Dispositif d'entrainement pour le cylindre d'une tricoteuse et ensemble rotor destine a un moteur synchrone sans balais
EP0541838A1 (fr) * 1991-11-12 1993-05-19 S.F.I.M. DI LONATI CAV. FRANCESCO & C. SOCIETA' IN ACCOMANDITA SEMPLICE Métier à tricoter circulaire pour la fabrication de chaussettes, bas et leurs pareils

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE576607C (de) * 1929-06-21 1933-05-13 Sachsenwerk Licht & Kraft Ag Polumschaltbarer Induktionsmotor fuer den Antrieb von Wirk-, Strick- und aehnlichen Maschinen
GB397793A (en) * 1932-03-24 1933-08-31 Sinfra A G Improvements in and relating to electrically driven machines for producing mesh fabric and particularly to knitting machines
US2231662A (en) * 1937-11-12 1941-02-11 Westinghouse Electric & Mfg Co Hosiery machine drive
GB1565509A (en) * 1975-12-10 1980-04-23 Nat Res Dev Drive mechanism
DE4128372A1 (de) 1991-08-27 1993-03-04 Sipra Patent Beteiligung Rundstrickmaschine mit einem nadelzylinder und einer rippscheibe
DE69115908T2 (de) * 1991-11-11 1996-05-30 Sfim Sas Rundstrickmaschine zur Herstellung von Socken, Strümpfen und dergleichen
DE10210071A1 (de) 2002-03-08 2003-10-09 Lat Suhl Ag Drehmomentmotor in Segmentbauweise
DE102004058920B4 (de) 2004-12-07 2007-01-11 Memminger-Iro Gmbh Rundstrickmaschine und Elektromotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259123A2 (fr) * 1986-08-28 1988-03-09 Draper Corporation Métier à tricoter circulaire à trame
EP0485924A1 (fr) * 1990-11-15 1992-05-20 S.F.I.M. S.r.l. Métier à tricoter circulaire à cylindre unique avec commande de cadran d'aiguilles amélioré, notamment pour la fabrication de chaussettes, bas et pareils
WO1993001340A1 (fr) * 1991-07-04 1993-01-21 A.C.M. Azienda Costruzione Motori S.A.S. Di Racca Anita & C. Dispositif d'entrainement pour le cylindre d'une tricoteuse et ensemble rotor destine a un moteur synchrone sans balais
EP0541838A1 (fr) * 1991-11-12 1993-05-19 S.F.I.M. DI LONATI CAV. FRANCESCO & C. SOCIETA' IN ACCOMANDITA SEMPLICE Métier à tricoter circulaire pour la fabrication de chaussettes, bas et leurs pareils

Also Published As

Publication number Publication date
DE102007012868A1 (de) 2008-09-18

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