WO2008113662A1 - Circular knitting machine drive - Google Patents
Circular knitting machine drive Download PDFInfo
- 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
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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
Description
Bezeichnung der Erfindung Name of the invention
RundstrickmaschinenantriebCircular knitting machine drive
Beschreibungdescription
Gebiet der ErfindungField of the invention
Die Erfindung betrifft eine mindestens einen Elektromotor aufweisende Antriebseinheit einer Rundstrickmaschine.The invention relates to a drive unit of a circular knitting machine having at least one electric motor.
Hintergrund der ErfindungBackground of the invention
Eine Rundstrickmaschine ist beispielsweise aus der DE 41 28 372 A1 bekannt. Diese Maschine weist einen stationären Tragring auf, mit dem ein ringförmiger Flanschkörper verbunden ist, der zusammen mit dem Tragring die Lagerflächen für ein als Drahtring / Kugel-Lager ausgebildetes Lager bildet, mittels dessen ein Zylinder-Antriebszahnrad drehbar im Tragring gelagert ist. Zusätzlich weist die Maschine eine Nabe auf, mit der ein weiteres Antriebszahnrad verbunden ist. Beide Antriebszahnräder werden durch jeweils ein Antriebsritzel angetrieben, wobei die Antriebsritzel auf einer gemeinsamen Antriebswelle angeordnet sind. Die Antriebswelle wiederum ist über ein Getriebe in nicht nä- her spezifizierter Weise angetrieben.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. In addition, 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.
Eine weitere, aus der DE 10 2004 058 920 B4 bekannte Rundstrickmaschine weist für mehrere an der Strickmaschine vorgesehene, in Riementriebe eingegliederte Elektromotoren eine gemeinsame Schnittstelleneinheit auf, die bei- spielsweise eine Gleichrichterschaltung, insbesondere ein getaktetes Netzteil, enthalten kann. Bei den Elektromotoren handelt es sich beispielsweise um als Permanentmagnetmotoren ausgebildete Synchron-Wechselstrom-Motoren. Die aus der DE 41 28 372 A1 sowie aus der DE 10 2004 058 920 B4 bekannten Antriebsvorrichtungen von Rundstrickmaschinen weisen jeweils ein nicht vernachlässigbares Spiel auf.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.
Aufgabe der ErfindungObject of the invention
Der Erfindung liegt die Aufgabe zugrunde, einen hinsichtlich mechanischer Präzision und Zuverlässigkeit gegenüber dem Stand der Technik verbesserten Rundstrickmaschinenantrieb anzugeben.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.
Zusammenfassung der ErfindungSummary of the invention
Diese Aufgabe wird erfindungsgemäß gelöst durch einen Rundstrickmaschinenantrieb mit den Merkmalen des Patentanspruchs 1. Hierbei wird ein Strickwerkzeugträger, welcher gegenüber einem stationären Tragteil einer Rundstrickmaschine rotierbar gelagert ist, elektrisch direkt angetrieben. Der Antrieb erfolgt vorzugsweise mittels eines permanentmagneterregten Synchronmotors, wobei ein bestrombares Primärteil des elektrischen Direktantriebs fest mit dem Tragteil und ein permanentmagnetbestücktes Sekundärteil des elektrischen Direktantriebs fest mit dem Strickwerkzeugträger verbunden ist. In besonders bevorzugter Ausgestaltung ist der elektrische Direktantrieb als Segment- Torque-Motor ausgebildet. Ein Segment-Torque-Motor ist prinzipiell beispiels- weise aus der DE 102 10 071 A1 bekannt.This object is achieved by a circular knitting machine drive with the features of claim 1. Here, 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 permanentmagnetbestücktes secondary part of the electric direct drive fixed to the knitting tool carrier. In a particularly preferred embodiment, 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.
Der elektrische Direktantrieb des mindestens einen Strickwerkzeugträgers ermöglicht einen sehr gleichmäßigen und spielfreien Antrieb, wobei mit gleichermaßen hoher Präzision sowohl ein Linkslauf als auch ein Rechtslauf möglich ist. Im Vergleich zu herkömmlichen Rundstrickmaschinen, deren Strickwerkzeugträger über Zahnräder und / oder Riemen angetrieben sind, sind Taktgenauigkeit, Taktgeschwindigkeit sowie der Wechsel der Drehrichtung um mindestens den Faktor 10 verbessert. Zudem entfällt jeglicher Wartungsaufwand für Riementriebe oder sonstige Getriebe. Die Lebensdauer des elektrischen Direktantriebs ist praktisch nicht begrenzt.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. In comparison to conventional circular knitting machines, whose knitting tool carriers are driven by gears and / or belts, the timing accuracy, clock speed and the change of the direction of rotation are improved by at least a factor of 10. In addition, eliminates any maintenance for belt drives or other gearboxes. The life of the electric direct drive is virtually unlimited.
Zur Lagerung des Strickwerkzeugträgers ist beispielsweise ein Wälzlager ge- eignet. Nach einer vorteilhaften Weiterbildung ist der Strickwerkzeugträger jedoch mittels eines Magnetlagers gelagert. Dabei kann es sich entweder um ein passives Magnetlager oder um ein aktives, regelbares Magnetlager handeln. In beiden Fällen ist das Magnetlager vorzugsweise als Radial-Axial-Lager ausgebildet. Die axiale Lagerfunktion und die radiale Lagerfunktion können durch zueinander orthogonale Lagerflächen realisiert sein. Bevorzugt sind konische, d.h. zur Lagerachse schräg gestellte Lagerflächen vorgesehen, welche eine kombinierte Radial- und Axial-Lagerfunktion übernehmen.For example, a roller bearing is suitable for mounting the knitting tool carrier. According to an advantageous development of the knitting tool carrier, however, is mounted by means of a magnetic bearing. It can either be a passive magnetic bearing or an active, adjustable magnetic bearing. In both cases, 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.
Im Fall der Ausbildung der Rundstrickmaschine als Doppelzylindermaschine ist jeder Strickwerkzeugträger direkt elektrisch antreibbar. Die zum Direktantrieb der zueinander konzentrischen Strickwerkzeugträger verwendeten Motoren, insbesondere Segment-Torque-Motoren, sind hierbei vorzugsweise ebenfalls konzentrisch zueinander angeordnet und werden von einer gemeinsamen, zur Rotationsachse normalen Ebene geschnitten. In entsprechender Weise sind ggf. auch die Magnetlager der verschiedenen Strickwerkzeugträger konzentrisch zueinander angeordnet, wobei sie denselben axialen Bauraum einnehmen. Die Magnetlagerung zeichnet sich genauso wie die zum elektrischen Direktantrieb verwendeten Motoren durch Wartungsfreiheit während der gesamten Gebrauchsdauer aus. Die verschiedenen Strickwerkzeugträger sind elekt- ronisch miteinander synchronisiert, wobei äußerst geringe Drehzahl- und Winkelabweichungen erzielbar sind, welche mit herkömmlichen, Getriebe aufweisenden Konstruktionen nicht zu erreichen sind.In the case of the formation of the circular knitting machine as a double cylinder machine, each knitting tool carrier is directly electrically driven. The motors used for the direct drive of the mutually concentric knitting tool carriers, in particular segment-torque motors, are preferably likewise arranged concentrically with respect to one another and are cut by a common plane normal to the axis of rotation. In a corresponding manner, if appropriate, 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.
Nachfolgend werden zwei Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen: Kurze Beschreibung der ZeichnungTwo embodiments of the invention will be explained in more detail with reference to a drawing. Herein show: Short description of the drawing
Figur 1 ein erstes Ausführungsbeispiel eines Rundstrickma- schinenantriebs, und1 shows a first embodiment of a circular knitting machine drive, and
Figur 2 ein zweites Ausführungsbeispiel eines Rundstrick- maschinenantriebs.2 shows a second embodiment of a circular knitting machine drive.
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
Einander entsprechende oder gleichwirkende Teile sind in beiden Figuren mit den gleichen Bezugszeichen gekennzeichnet. Beide Figuren zeigen ausschnittsweise in einer vereinfachten Schnittdarstellung einen Rundstrickma- schinenantrieb 1 einer nicht weiter dargestellten Rundstrickmaschine. Bezüglich der grundsätzlichen Funktion einer solchen Rundstrickmaschine wird auf den eingangs genannten Strand der Technik verwiesen.Corresponding or equivalent parts are indicated in both figures with the same reference numerals. Both figures show a detail in a simplified sectional view of a circular knitting machine drive 1 of a circular knitting machine not shown. Regarding the basic function of such a circular knitting machine reference is made to the aforementioned beach of the art.
Im Ausführungsbeispiel nach Figur 1 sind auf einem stationären Tragteil 2, welches fest mit einem Gestell der Rundstrickmaschine verbunden oder Teil eines Maschinengestells ist, zwei Strickwerkzeugträger 3, 4 rotierbar gelagert. Die beiden Strickwerkzeugträger 3, 4 sind mittels jeweils eines elektrischen Direktantriebs 5, 6 unabhängig voneinander antreibbar. Jeder elektrische Direktantrieb 5, 6 ist als permanentmagneterregter Synchronmotor ausgebildet, wobei ein bestrombares Primärteil 7, 8 am Tragteil 2 befestigt ist. Das zugehörige Sekundärteil 9, 10 ist durch direkt am Strickwerkzeugträger 3, 4 befestigte Permanentmagnete 11 , 12 gebildet. Die Sekundärteile 9, 10 weisen keine eigene Lagerung auf. Zwischen einem Primärteil 7, 8 und dem zugehörigen Sekundärteil 9, 10 ist jeweils ein ringförmiger Luftspalt 13, 14 gebildet.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.
Die Strickwerkzeugträger 3, 4 einschließlich der Sekundärteile 9, 10 sind mit Magnetlagern 15, 16 gelagert, welche als Radial-Axial-Lager ausgebildet sind. Jedes Magnetlager 15, 16 setzt sich zusammen aus mit dem Tragring 2 ver- bundenen Magneten 17 und mit dem Strickwerkzeugträger 3, 4 verbundenen Magneten 18. Im in Figur 1 dargestellten Querschnitt weisen die zwischen den Magneten 17, 18 gebildeten Luftspalte 19, 20 jeweils eine mehrfach abgewinkelte Form auf. Diese Form ergibt sich aus der Kontur der Oberflächen der Magnete 17, 18, welche jeweils drei unterschiedliche Lagerflächen 21 , 22, 23 aufweisen. Eine mittlere Lagerfläche 21 befindet sich an der Oberfläche eines gedachten, zur Rotationsachse des Rundstrickmaschinenantriebs 1 symmetrischen Zylinders. Die Lagerflächen 21 sind ausschließlich zur Aufnahme radialer Belastungen vorgesehen. In beiden Axialrichtungen schließt sich an die Lagerfläche 21 jeweils eine zur Lagerachse schräg gestellte Lagerfläche 22, 23 an, wobei diese zwei äußeren Lagerflächen 22, 23 in entgegen gesetztem Sinn schräg gestellt sind. Auf diese Weise können die Magnetlager 15, 16 Axialkräfte in beiden Richtungen aufnehmen. Abhängig von den im Rundstrickmaschinenantrieb 1 auftretenden Kräften können die äußeren Lagerflächen 22, 23, abweichend von der vereinfachten Darstellung nach Figur 1 , unterschiedlich dimensioniert sein. Ebenso ist es möglich, die Funktionen der elektrischen Direktantriebe 5, 6 und der Magnetlager 15, 16 in kombinierten Lager-Antriebs- Bauteilen zu vereinigen. Dies gilt analog auch für das Ausführungsbeispiel nach Figur 2, welches sich vom Ausführungsbeispiel nach Figur 1 dadurch unterscheidet, dass lediglich ein einziger Strickwerkzeugträger 3 vorhanden ist. Die prinzipielle Lage der Rotationsachse des Rundstrickmaschinenantriebs 1 ist durch die Lagerachse A angegeben. 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. bonded magnets 17 and with the knitting tool carrier 3, 4 connected magnets 18. In the cross section shown in Figure 1, 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. In both axial directions, a bearing surface 22, 23 inclined to the bearing axis adjoins the bearing surface 21 in each case, wherein these two outer bearing surfaces 22, 23 are inclined in the opposite direction. In this way, the magnetic bearings 15, 16 can absorb axial forces in both directions. Depending on the forces occurring in the circular knitting machine drive 1, the outer bearing surfaces 22, 23, deviating from the simplified representation of Figure 1, be dimensioned differently. It is also possible to combine the functions of the electric direct drives 5, 6 and the magnetic bearings 15, 16 in combined bearing drive components. This also applies analogously to the embodiment of Figure 2, which differs from the embodiment of Figure 1 in that only a single knitting tool carrier 3 is present. The basic position of the axis of rotation of the circular knitting machine drive 1 is indicated by the bearing axis A.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Rundstrickmaschinenantrieb1 circular knitting machine drive
2 Tragteil2 supporting part
3 Strickwerkzeugträger3 knitting tool carrier
4 Strickwerkzeugträger4 knitting tool carriers
5 elektrischer Direktantrieb5 electric direct drive
6 elektrischer Direktantrieb6 direct electrical drive
7 Primärteil7 primary part
8 Primärteil8 primary part
9 Sekundärteil9 secondary part
10 Sekundärteil10 secondary part
11 Permanentmagnet11 permanent magnet
12 Permanentmagnet12 permanent magnet
13 Luftspalt13 air gap
14 Luftspalt14 air gap
15 Magnetlager15 magnetic bearings
16 Magnetlager16 magnetic bearings
17 Magnet17 magnet
18 Magnet18 magnet
19 Luftspalt19 air gap
20 Luftspalt20 air gap
21 mittlere Lagerfläche21 medium storage area
22 äußere Lagerfläche22 outer bearing surface
23 äußere Lagerfläche23 outer storage area
Lagerachse bearing axle
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007012868.3 | 2007-03-17 | ||
| DE200710012868 DE102007012868A1 (en) | 2007-03-17 | 2007-03-17 | Circular knitting machine drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008113662A1 true WO2008113662A1 (en) | 2008-09-25 |
Family
ID=39265271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2008/052350 Ceased WO2008113662A1 (en) | 2007-03-17 | 2008-02-27 | Circular knitting machine drive |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007012868A1 (en) |
| WO (1) | WO2008113662A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259123A2 (en) * | 1986-08-28 | 1988-03-09 | Draper Corporation | Circular weft knitting machine |
| EP0485924A1 (en) * | 1990-11-15 | 1992-05-20 | S.F.I.M. S.r.l. | Single-cylinder circular machine with improved platen actuation, in particular for manufacturing socks, stockings and the like |
| WO1993001340A1 (en) * | 1991-07-04 | 1993-01-21 | A.C.M. Azienda Costruzione Motori S.A.S. Di Racca Anita & C. | Drive device for the cylinder of a hosiery machine and rotor assembly for a brushless synchronous motor |
| EP0541838A1 (en) * | 1991-11-12 | 1993-05-19 | S.F.I.M. DI LONATI CAV. FRANCESCO & C. SOCIETA' IN ACCOMANDITA SEMPLICE | Circular knitting machine for manufacturing socks, stockings and the like |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE576607C (en) * | 1929-06-21 | 1933-05-13 | Sachsenwerk Licht & Kraft Ag | Pole-changing induction motor for driving knitting, knitting and similar machines |
| 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 (en) | 1991-08-27 | 1993-03-04 | Sipra Patent Beteiligung | CIRCULAR KNITTING MACHINE WITH A NEEDLE CYLINDER AND A RIPER DISC |
| DE69115908T2 (en) * | 1991-11-11 | 1996-05-30 | Sfim Sas | Circular knitting machine for the production of socks, stockings and the like |
| DE10210071A1 (en) | 2002-03-08 | 2003-10-09 | Lat Suhl Ag | Torque motor in segment design |
| DE102004058920B4 (en) | 2004-12-07 | 2007-01-11 | Memminger-Iro Gmbh | Circular knitting machine and electric motor |
-
2007
- 2007-03-17 DE DE200710012868 patent/DE102007012868A1/en not_active Withdrawn
-
2008
- 2008-02-27 WO PCT/EP2008/052350 patent/WO2008113662A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259123A2 (en) * | 1986-08-28 | 1988-03-09 | Draper Corporation | Circular weft knitting machine |
| EP0485924A1 (en) * | 1990-11-15 | 1992-05-20 | S.F.I.M. S.r.l. | Single-cylinder circular machine with improved platen actuation, in particular for manufacturing socks, stockings and the like |
| WO1993001340A1 (en) * | 1991-07-04 | 1993-01-21 | A.C.M. Azienda Costruzione Motori S.A.S. Di Racca Anita & C. | Drive device for the cylinder of a hosiery machine and rotor assembly for a brushless synchronous motor |
| EP0541838A1 (en) * | 1991-11-12 | 1993-05-19 | S.F.I.M. DI LONATI CAV. FRANCESCO & C. SOCIETA' IN ACCOMANDITA SEMPLICE | Circular knitting machine for manufacturing socks, stockings and the like |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007012868A1 (en) | 2008-09-18 |
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