DE10026983A1 - Knitter guide bar drive is a three-phase linear motor linked to the guide bar by a coupling rod and fitted with a linear measurement system to allow pattern changes without mechanical knitter conversion - Google Patents
Knitter guide bar drive is a three-phase linear motor linked to the guide bar by a coupling rod and fitted with a linear measurement system to allow pattern changes without mechanical knitter conversionInfo
- Publication number
- DE10026983A1 DE10026983A1 DE2000126983 DE10026983A DE10026983A1 DE 10026983 A1 DE10026983 A1 DE 10026983A1 DE 2000126983 DE2000126983 DE 2000126983 DE 10026983 A DE10026983 A DE 10026983A DE 10026983 A1 DE10026983 A1 DE 10026983A1
- Authority
- DE
- Germany
- Prior art keywords
- knitter
- guide bar
- linear motor
- measurement system
- coupling rod
- 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
Links
- 230000008878 coupling Effects 0.000 title abstract description 6
- 238000010168 coupling process Methods 0.000 title abstract description 6
- 238000005859 coupling reaction Methods 0.000 title abstract description 6
- 238000005259 measurement Methods 0.000 title abstract description 4
- 238000006243 chemical reaction Methods 0.000 title description 2
- 239000000696 magnetic material Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims abstract 2
- 238000009940 knitting Methods 0.000 claims description 5
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000011232 storage material Substances 0.000 claims 1
- 230000003134 recirculating effect Effects 0.000 abstract description 2
- 229920000049 Carbon (fiber) Polymers 0.000 abstract 1
- 239000004917 carbon fiber Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
- D04B27/10—Devices for supplying, feeding, or guiding threads to needles
- D04B27/24—Thread guide bar assemblies
- D04B27/26—Shogging devices therefor
-
- 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
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
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)
- Control Of Linear Motors (AREA)
Abstract
Description
Bei einer Wirkmaschine im herkömmlichen Sinne erfolgt die Ansteuerung der Legebarren über eine mechanische Kopplung mit der Hauptwelle der Maschine. Als Koppelglieder werden dabei Spiegelscheiben oder Musterketten verwendet. Diese sind komplizierte mechanische Körper, die nur unter großem Aufwand, bei den geforderten Genauigkeiten hergestellt werden können. Bei einem Musterwechsel entsteht ein sehr hoher zeitlicher sowie konstruktiver Aufwand, da für jedes Muster neue Spiegelscheiben bzw. Musterketten angefertigt werden müssen bekannt sind auch Lösungen, bei denen diese Nachteile dadurch umgangen werden, daß zylindrische Linearmotoren als Einzelantriebe für jede Legeschiene verwendet werden. Diese Anwendung eröffnet die Möglichkeit, Musteränderungen durch Programmierung zu realisieren. Nachteile sind dabei, daß die zylindrischen Motoren quer zur Bewegungsrichtung relativ große Abmessungen aufweisen, und daß der kleine lineare Lagegeber am Motor nicht möglich ist. Diese Nachteile sollen dadurch umgangen werden, daß ein flacher Drehstromlinearmotor mit mechanisch fest verbundenem linearem Wegsensor als direkter Antrieb der Legebarren eingesetzt wird. Ein flacher Drehstromlinearmotor bietet den Vorteil der Stapelbarkeit der Antriebe und damit einer platzgünstigen Anordnung der einzelnen Achsen. Das Sekundärteil des Drehstromlinearmotor ist aus Gründen der Steifigkeit und des Gewichtes aus kohlefaserverstärktem Kunststoff aufgebaut. Das bietet den Vorteil, daß keine Wirbelströme im Trägermaterial induziert werden, die zur Erwärmung des Sekundärteiles führen sowie keine den Feldverlauf des Motors störenden Magnetfelder auftreten. Die Ansteuerung des Drehstromlinearmotor erfolgt über einen Frequenzumrichter, der die erforderlichen Reglerstrukturen enthält und in dem alle notwendigen Musterinformationen abgelegt sind. Damit ist es möglich neue Muster anzuwählen und den Linearmotor entsprechend anzusteuern. Der mechanische Umbau der Wirkmaschine bei Musteränderung entfällt dadurch.In the case of a knitting machine in the conventional sense, the laying bars are actuated via a mechanical coupling with the main shaft of the machine. As coupling links mirror disks or sample chains are used. These are complicated mechanical body that requires great effort, with the required accuracy can be produced. With a pattern change there is a very high temporal as well as constructive effort, since new mirror discs or pattern chains for each pattern Solutions that overcome these disadvantages must also be known be circumvented that cylindrical linear motors as individual drives for each laying rail be used. This application opens up the possibility of pattern changes through To implement programming. Disadvantages are that the cylindrical motors cross have relatively large dimensions to the direction of movement, and that the small linear Position encoder on the motor is not possible. These disadvantages are to be avoided by that a flat three-phase linear motor with a mechanically firmly connected linear Displacement sensor is used as a direct drive for the laying bars. A flat one Three-phase linear motor offers the advantage of the stackability of the drives and thus one space-saving arrangement of the individual axes. The secondary part of the Three-phase linear motor is made for reasons of rigidity and weight carbon fiber reinforced plastic. This offers the advantage that no eddy currents be induced in the carrier material, which lead to the heating of the secondary part and no magnetic fields disturbing the field course of the motor occur. The control of the Three-phase linear motor takes place via a frequency converter, which has the required Contains controller structures and in which all necessary sample information is stored. This makes it possible to select new patterns and the linear motor accordingly head for. The mechanical conversion of the knitting machine in the event of a pattern change is not necessary thereby.
Die Ausführung der Neuerung wird anhand von Abbildungen näher erläutert.The implementation of the innovation is explained in more detail using illustrations.
Fig. 1 stellt den mechanischen Aufbau der Neuerung. Fig. 1 shows the mechanical structure of the innovation.
Fig. 2 zeigt ein Blockschaltbild des Regelkreises. Fig. 2 shows a block diagram of the control loop.
In Fig. 1 ist die anzutreibende Legebarre (1), die über eine Koppelstange (2) mit einem flachen Drehstromlinearmotor (3) verbunden ist, dargestellt. Die Positionierung erfolgt mit Hilfe eines, am Drehstromlinearmotor fest angebrachten, linearem Meßsystem (4), daß dadurch gekennzeichnet ist, daß gleichzeitig sowohl inkrementale als auch absolute Meßwerte liefert. Das dargestellte Prinzipbild des mechanischen Aufbaus zeigt, daß die Legebarre über eine Koppelstange fest mit dem Sekundärteil des flachen Drehstromlinearmotor verbunden ist. Die Lagerung und Führung (5) des Sekundärteiles kann über Kugelumlaufhülsen oder Profilschienenführungen erfolgen, die seitlich am Sekundärteil angebracht sind. Der Kraftabtrieb kann zentral oder seitlich erfolgen.In Fig. 1 the driven bar ( 1 ) is shown, which is connected via a coupling rod ( 2 ) to a flat three-phase linear motor ( 3 ). The positioning is carried out with the aid of a linear measuring system ( 4 ) fixedly attached to the three-phase linear motor, which is characterized in that both incremental and absolute measured values are delivered simultaneously. The schematic diagram of the mechanical structure shown shows that the laying bar is firmly connected to the secondary part of the flat three-phase linear motor via a coupling rod. The secondary part can be stored and guided ( 5 ) using recirculating ball sleeves or linear guideways, which are attached to the side of the secondary part. The power take-off can take place centrally or laterally.
In Fig. 2 ist dargestellt, wie die vom Meßsystem gewonnenen Lage-Istwerte Xi über eine Meßleitung (6) an den Lageregler übergeben werden, der mit Hilfe eines Lage-Sollwert Xs die Regelabweichnung bestimmt und ein entsprechendes Steuersignal s an den Drehstromlinearmotor ausgibt. Im Ansteuergerät ist ferner ein Musterspeicher (7) enthalten, in dem sämtliche Musterinformationen abgelegt sind. Die Aktivierung der einzelnen Muster erfolgt über ein von der übergeordneten Steuerung (8) ausgegebenes Signal. Des weiteren erfolgt die Synchronisation der einzelnen Legebarren in Abhängigkeit der Lage der Hauptwelle über diese übergeordnete Steuerung.In Fig. 2 is shown how the gathered by the measurement system the actual position values X i are passed via a measuring line (6) to the position controller, of a position command value X s is determined with the aid of the Regelabweichnung and a corresponding control signal outputs s to the three-phase linear motor . A pattern memory ( 7 ) in which all pattern information is stored is also contained in the control device. The individual patterns are activated via a signal output by the higher-level control ( 8 ). Furthermore, the synchronization of the individual bars depends on the position of the main shaft via this higher-level control.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000126983 DE10026983A1 (en) | 2000-05-31 | 2000-05-31 | Knitter guide bar drive is a three-phase linear motor linked to the guide bar by a coupling rod and fitted with a linear measurement system to allow pattern changes without mechanical knitter conversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000126983 DE10026983A1 (en) | 2000-05-31 | 2000-05-31 | Knitter guide bar drive is a three-phase linear motor linked to the guide bar by a coupling rod and fitted with a linear measurement system to allow pattern changes without mechanical knitter conversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10026983A1 true DE10026983A1 (en) | 2001-12-06 |
Family
ID=7644230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2000126983 Ceased DE10026983A1 (en) | 2000-05-31 | 2000-05-31 | Knitter guide bar drive is a three-phase linear motor linked to the guide bar by a coupling rod and fitted with a linear measurement system to allow pattern changes without mechanical knitter conversion |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10026983A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10349967A1 (en) * | 2003-10-24 | 2005-06-09 | Hauni Maschinenbau Ag | Multifunction conveyor drum |
| DE102004031268A1 (en) * | 2004-06-29 | 2006-02-02 | Karl Mayer Textilmaschinenfabrik Gmbh | Legebarrenantrieb in a knitting machine |
| JP2007239173A (en) * | 2006-03-08 | 2007-09-20 | Santoni Spa | Control device for yarn guide bar of linear knitting machine |
| CN103374790A (en) * | 2013-08-06 | 2013-10-30 | 郑依福 | Two-sided integrated guide bar device of warp knitting machine |
-
2000
- 2000-05-31 DE DE2000126983 patent/DE10026983A1/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102004031268A1 (en) * | 2004-06-29 | 2006-02-02 | Karl Mayer Textilmaschinenfabrik Gmbh | Legebarrenantrieb in a knitting machine |
| US7332836B2 (en) | 2004-06-29 | 2008-02-19 | Karl Mayer Testilmaschinenfabrik Gmbh | Guide bar drive in a knitting machine |
| JP2007239173A (en) * | 2006-03-08 | 2007-09-20 | Santoni Spa | Control device for yarn guide bar of linear knitting machine |
| US7320233B2 (en) | 2006-03-08 | 2008-01-22 | Santoni S.P.A. | Control device for linear knitting machines thread-guide bars |
| CN103374790A (en) * | 2013-08-06 | 2013-10-30 | 郑依福 | Two-sided integrated guide bar device of warp knitting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8127 | New person/name/address of the applicant |
Owner name: LIBA MASCHINENFABRIK GMBH, 95119 NAILA, DE |
|
| 8110 | Request for examination paragraph 44 | ||
| 8131 | Rejection |