EP1361997A1 - Thread supplying device - Google Patents
Thread supplying deviceInfo
- Publication number
- EP1361997A1 EP1361997A1 EP02718128A EP02718128A EP1361997A1 EP 1361997 A1 EP1361997 A1 EP 1361997A1 EP 02718128 A EP02718128 A EP 02718128A EP 02718128 A EP02718128 A EP 02718128A EP 1361997 A1 EP1361997 A1 EP 1361997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- motor shaft
- rotor
- stator
- thread
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
- B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
Definitions
- the invention relates to a yarn delivery device specified in the preamble of claim 1.
- the electric motor is an asynchronous motor which, due to its design, requires complex control electronics and has an operating behavior which requires some compromises to be accepted when driving the yarn guide element of the yarn delivery device.
- known thread delivery devices there are equipment variants in which the threading of a new thread is simplified or even automated.
- a guide track for the threading needle can be used in the boom fixed to the housing in order to bring the new thread to the draw-off area.
- a guide path for the air flow transporting the new thread is provided as a threading device in the boom fixed to the housing.
- the invention has for its object to provide an improved thread delivery device of the type mentioned, in which the target position required for threading can be reproducibly adjusted at a standstill.
- Equipping the thread delivery device with the permanent magnet motor has the advantage that fewer compromises need to be accepted with regard to operational behavior, as with an asynchronous motor.
- the permanent magnet motor On the control side, the permanent magnet motor is easier to control, more compact and more cost-effective in large series. Above all, it offers the important advantage of easy integration into computerized data and signal transmission systems of textile machines.
- the design-related, unavoidable effect of the several stable and unstable rotational positions of the rotor of the currentless permanent magnet motor is deliberately used to fix the thread guide element in the threading position relatively stable, since the interacting component group of the stator, the rotor of the permanent magnet motor, the motor shaft and the thread guide element are so in the housing is installed so that one of the stable relative rotational positions of the rotor must match the target rotational position of the motor shaft and thus the threading position of the insertion element. It is therefore easily possible to correctly position the thread guide element in the threading position when the permanent magnet motor is stopped, without holding on to additional means.
- the thread delivery device taking into account the stable and unstable relative rotational position of the rotor, it is only necessary to avoid random installation positions and to ensure a predetermined installation position on site.
- At least one engagement point is expediently provided on the stator, at which an engagement element of the housing can be brought into engagement in order to position the stator in the housing such that one of the stable relative rotational positions correlates with the threading position of the thread guide element.
- the point of engagement is a depression or longitudinal groove in the outer circumference of the stator.
- a protrusion in the housing is brought into engagement with this point of engagement.
- a fitting screw is expediently screwed in, which ensures the positioning of the stator.
- the engagement element should be provided on the underside of the housing. Matched to this position of the engagement element in the housing, the respective engagement point on the stator is placed with regard to the angle of rotation of the rotor in its stable relative rotational position.
- the threading device can be a guide provided in a bracket fixed to the housing for either a threading needle or a threading air flow.
- the outlet of a winding tube of the motor shaft forming the thread guide element is then aligned with the guide when the rotor of the currentless permanent magnet motor has assumed a certain of its stable relative rotational positions.
- control electronics provide relatively little effort in terms of rotational angle information from the rotor, which can be used to set the rotor into the stable relative rotational position, which correlates with the desired rotational position of the motor shaft, when the permanent magnet motor is stopped by means of a motor stop routine.
- the position signal of a rotational position sensor of the thread delivery device can also be used, which confirms to the motor control that the threading element of the thread guide element has been reached.
- Fig. 1 shows a longitudinal section of a yarn feeder with a permanent magnet motor
- Fig. 2 shows a cross section of the yarn delivery device.
- a thread delivery device F shown in FIGS. 1 and 2 is, for example, a weft delivery device for a weaving machine and has equipment for manual or automated or semi-automated threading of a new thread.
- the thread delivery device F has a solid housing 1 with a boom 2 fixed to the housing.
- a guide 3 is provided as threading device T, which guide either for guiding a threading needle or an egg A new thread can be used by the air flow transporting the thread delivery device F.
- a permanent magnet motor PM is mounted, which serves as a drive for a thread guide element E, with which a thread (not shown in FIG. 1), which is shown from the left, can be brought through the thread guide element E to a storage area of a storage body D, to form a thread supply, not shown, from which the thread in FIG. 1 is drawn off to the right for consumption.
- the permanent magnet motor PM consists of a stator S fixed in the housing 1 and a rotor R which is mounted in the stator S on a motor shaft W which is rotatably mounted in bearings 4 in the housing and carries the storage body D.
- Control electronics C for the permanent magnet motor PM are arranged in the housing 1 or in the housing bracket 2 and are connected to the permanent magnet motor PM via a connection 6.
- a rotational position sensor H may also be provided, e.g. a Hall sensor which is arranged in the housing 1 and which senses the rotational position of the thread guide element E and, for example, generates a signal and transmits it to the control electronics C via a connection 9 when the thread guide element E in the one shown in FIG. 1, on the guide 3 of the threading device T aligned threading position has reached.
- the storage body D is rotatably supported on the motor shaft W in a manner not shown about its axis X. It is prevented from rotating with the motor shaft W by permanent magnets 7 arranged in the housing 1 and cooperating with permanent magnets 8 arranged in the storage body D beyond the thread guide element E. (Stationary storage body).
- the motor shaft W is designed as a hollow shaft (not shown) at least in its left end section.
- the thread guide element E is integrated in a so-called winding disk and is formed by a winding tube which runs obliquely outward from the motor shaft W.
- the rotor R which is mounted on the motor shaft W in a rotationally fixed manner, is equipped with a plurality of components distributed in the circumferential direction, possibly different spaced, permanent magnets 11 recognizable.
- the stator S has pole cores 12 distributed in the circumferential direction, between which there are cavities 13 for windings or windings (not shown).
- the effect of the magnetic interaction between the permanent magnets 11 and the pole cores 12 is that the rotor R has a plurality of stable relative rotational positions DLS and a correspondingly large number of unstable relative rotational positions within a full revolution.
- the permanent magnet motor PM When the permanent magnet motor PM is de-energized, the rotor turns automatically from one unstable rotational position in one or the other direction of rotation to a stable relative rotational position.
- a stable relative rotational position is indicated by the two arrows pointing towards each other at DLS.
- the motor shaft W assumes a desired rotational position Y, in which the thread guide element E has its threading position indicated by Z and is aligned with the guide 3 of the threading device T.
- the stator S of the permanent magnet motor PM is fixed in a very specific rotational position in the housing 1 in FIG. 2.
- several engagement points 14 are distributed over the circumference of the stator, e.g. Depressions or longitudinal grooves, shaped.
- the engaging element 15 of the housing 1 is brought into engagement in one of these engagement points 14.
- the engaging element 15 is, for example, a fitting screw 16 which is screwed into the housing 1 through a threaded bore 17.
- the threaded bore 17 is expediently located on the housing underside 10 diametrically opposite the housing extension 2 with respect to the axis X.
- each can optionally be used for cooperation with the engagement element 15.
- the engagement points 14 are so Arranged on the circumference of the stator S that, when properly engaged between an engagement point 14 and the engagement element 15, the thread guide element E is precisely aligned with the threading device T, even if the rotor R has also assumed one of its stable relative rotational positions, for example DLS.
- a motor stop routine can be programmed with which the rotor R is rotated to the same extent until the permanent magnet motor PM is stopped until it reaches the stable relative rotational position DLS , in which the thread guide element E is aligned with the threading device T.
- the confirmation signal of the rotational position sensor H shown in FIG. 1 can also be used as a reference in order to rotate the rotor R to a stable rotational position DLS when the permanent magnet motor PM stops, and the sensor H to reach the target position Y of the motor shaft W is confirmed, the rotor then also having the predetermined stable relative rotational position.
- the rotational position of the stator S is predetermined so that the aforementioned results are achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Looms (AREA)
- Manufacture Of Motors, Generators (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10107688A DE10107688A1 (en) | 2001-02-19 | 2001-02-19 | Yarn feeder |
DE10107688 | 2001-02-19 | ||
PCT/EP2002/001512 WO2002066353A1 (en) | 2001-02-19 | 2002-02-13 | Thread supplying device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1361997A1 true EP1361997A1 (en) | 2003-11-19 |
EP1361997B1 EP1361997B1 (en) | 2005-01-19 |
Family
ID=7674549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02718128A Expired - Lifetime EP1361997B1 (en) | 2001-02-19 | 2002-02-13 | Thread supplying device |
Country Status (6)
Country | Link |
---|---|
US (1) | US7059556B2 (en) |
EP (1) | EP1361997B1 (en) |
KR (1) | KR100537989B1 (en) |
CN (1) | CN1239367C (en) |
DE (2) | DE10107688A1 (en) |
WO (1) | WO2002066353A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE0103196D0 (en) * | 2001-09-24 | 2001-09-24 | Iropa Ag | Fadenliefergerät |
ITTO20060015A1 (en) * | 2006-01-11 | 2007-07-12 | Lgl Electronics Spa | NEGATIVE PLOT FEEDER WITH INCORPORATED POSITION DETECTOR |
DE102021115596B3 (en) | 2021-06-16 | 2022-05-12 | Memminger-IRO Gesellschaft mit beschränkter Haftung | thread feeding device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116397A (en) * | 1973-12-06 | 1978-09-26 | Papst Motoren Kg | Drive arrangement for yarn storage and dispensing units |
FR2523162A1 (en) * | 1982-03-08 | 1983-09-16 | Cheboxarsky Mashstr Zavod | Drum-type weft accumulator - with low-inertia flyer mechanism driven by electric motor of double-cylindrical construction |
IT1217339B (en) * | 1988-02-11 | 1990-03-22 | Roy Electrotex Spa | WIRE FEEDER FOR TEXTILE MACHINES |
DE4007131C2 (en) * | 1990-03-07 | 1999-12-30 | Iro Patent Ag Baar | Delivery device for running threads |
IT1259551B (en) * | 1992-04-22 | 1996-03-20 | Lgl Electronics Spa | ELECTRO-PNEUMATIC DEVICE FOR AUTOMATIC THREADING OF WEFT FEEDERS WITH TEXTILE MACHINES AND WEFT FEEDER INCORPORATING SAID DEVICE |
DE4336312C2 (en) * | 1993-10-25 | 2003-09-25 | Schlafhorst & Co W | Device for winding packages |
WO1997035793A1 (en) * | 1996-03-26 | 1997-10-02 | Iro Ab | Proximity sensor and yarn feeder with a proximity sensor |
IT1307714B1 (en) * | 1999-05-07 | 2001-11-14 | Lgl Electronics Spa | METHOD AND DEVICE FOR AUTOMATIC ADJUSTMENT OF THE ASYNCHRONOUS MOTOR HANDLING ARM OF THE ROLLER ARM IN THE APPLIANCES |
DE19941889A1 (en) * | 1999-09-02 | 2001-03-08 | Iro Patent Ag Baar | Thread delivery device |
DE10006142A1 (en) * | 2000-02-11 | 2001-08-16 | Iro Patent Ag Baar | Feeder for supplying twist-free yarn, e.g. weft feeder for loom, comprises twist stop to control twist distribution on feed drum |
DE10249641A1 (en) * | 2002-10-24 | 2004-05-06 | Iropa Ag | Sensor system and method for vector control |
-
2001
- 2001-02-19 DE DE10107688A patent/DE10107688A1/en not_active Withdrawn
-
2002
- 2002-02-13 KR KR10-2003-7010882A patent/KR100537989B1/en not_active IP Right Cessation
- 2002-02-13 WO PCT/EP2002/001512 patent/WO2002066353A1/en not_active Application Discontinuation
- 2002-02-13 US US10/468,632 patent/US7059556B2/en not_active Expired - Fee Related
- 2002-02-13 CN CNB028048814A patent/CN1239367C/en not_active Expired - Lifetime
- 2002-02-13 EP EP02718128A patent/EP1361997B1/en not_active Expired - Lifetime
- 2002-02-13 DE DE50202042T patent/DE50202042D1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO02066353A1 * |
Also Published As
Publication number | Publication date |
---|---|
US7059556B2 (en) | 2006-06-13 |
KR100537989B1 (en) | 2005-12-20 |
US20040108400A1 (en) | 2004-06-10 |
DE50202042D1 (en) | 2005-02-24 |
CN1491177A (en) | 2004-04-21 |
EP1361997B1 (en) | 2005-01-19 |
CN1239367C (en) | 2006-02-01 |
DE10107688A1 (en) | 2002-08-29 |
WO2002066353A1 (en) | 2002-08-29 |
KR20030076689A (en) | 2003-09-26 |
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