EP0847369A1 - Tension device - Google Patents
Tension deviceInfo
- Publication number
- EP0847369A1 EP0847369A1 EP96926390A EP96926390A EP0847369A1 EP 0847369 A1 EP0847369 A1 EP 0847369A1 EP 96926390 A EP96926390 A EP 96926390A EP 96926390 A EP96926390 A EP 96926390A EP 0847369 A1 EP0847369 A1 EP 0847369A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- brake
- thread
- elements
- braking
- bearing axis
- 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
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/20—Co-operating surfaces mounted for relative movement
- B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/20—Co-operating surfaces mounted for relative movement
- B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
- B65H59/225—Tension discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2555/00—Actuating means
- B65H2555/10—Actuating means linear
- B65H2555/13—Actuating means linear magnetic, e.g. induction motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Definitions
- the invention relates to a thread brake with two brake elements which are resiliently pressed against one another by magnetic loading means, preferably disc-shaped or plate-shaped brake elements.
- Thread brakes of this type are widely used to force thread tension on running threads in textile machines and are known, for example, from EP 499 218 A2 or DE 43 01 507 A1.
- a generic thread brake has become known from the older application DE 4409450 A1, in which additional axially polarized magnets are provided to support the centering of the brake actuators on the bearing axis.
- the magnets are polarized in such a way that they repel the brake actuator in front of them in the axial direction.
- At least one of the additional magnets is axially adjustable on the bearing axis.
- the thread brakes known from the prior art set out above have in common that relatively complex solutions are provided in order to enable self-cleaning and at the same time a sufficient fine adjustment of the braking force in order to achieve a high degree of operational reliability.
- the invention is therefore based on the object of providing a thread brake of the type mentioned at the beginning, in which the rotatability of at least one or both brake disks for self-cleaning is achieved and maintained in a simple and inexpensive manner, and a sensitive adjustability of the braking force , as well as universal applicability in any installation position and for different textile threads in textile machines.
- a thread brake can be provided with two brake elements which are resiliently pressed against one another by load means, in which the brake elements can be freely movable on the bearing axis.
- the brake actuator provided with the load means is pressed against the opposite brake actuator, which rests against a stop and is therefore braked to a slightly greater extent than the brake actuator with the load means due to the greater bearing friction.
- the axial force of the braking elements can be adjusted by changing the distance between the two repelling load means, since there is a quadratic relationship between the size of the repulsive force and the distance.
- This arrangement has the further advantage that it can be used regardless of the installation position. Furthermore, it is adjustable over a larger area and with the thread running.
- FIG. 1 is a schematic side view of a thread brake according to the invention with repelling load means
- FIG. 2 shows a schematic side view of a thread brake according to the invention with tightening loading means
- FIG. 3 shows a schematic side view of the thread brake according to FIG. 1 with a thread guide slot
- FIG. 4 shows a schematic side view of a braking element with a force diagram of the forces applied to the braking elements via the thread.
- FIG. 1 shows a thread brake 11 according to the invention.
- This has a bearing axis 12, the installation position of which is shown, for example, in a horizontal orientation, but can be selected as desired.
- a first brake element 13 and a second brake element 14 are freely rotatably supported on this bearing axis 12 with play.
- the brake elements 13, 14 are disc-shaped or plate-shaped and have a central opening 17, 18, which serve to mount the brake elements 13, 14 on the bearing axis 12.
- the brake elements 13, 14 are curved in a toroidal shape, as seen in cross-section, and bear against one another in the region of the curvature 16.
- bearing elements 19, 21 are provided for the friction-reducing and / or wear-reducing reception of the brake elements 13, 14 on the bearing axis 12.
- These bearing elements 19, 21 can be designed as bearing bushes or bearing rings.
- These bearing elements 19, 21 are advantageously made of plastic, which has good sliding properties and high wear resistance.
- the bearing axis 12 advantageously has a bearing sleeve 22, which is made of a hard and wear-resistant material, such as ceramic. This results in a high stability of the bearing axis 12 with respect to the brake elements 13, 14 freely rotating thereon and a thread 23 which can be at least partially deflected around the bearing axis 12.
- the bearing axis 12 is received by a holder 26, which can be provided, for example, on a thread delivery device (not shown).
- a stop 27 is provided, which is advantageously formed from a wear-resistant plastic with a low coefficient of friction.
- the first braking element 13 with its bearing element 19 bears against this stop 27 and is limited in its axial direction of movement to the left and at least partially braked.
- the second brake element 14 Opposed to the first brake element 13, the second brake element 14 is shown with a loading means 28. At a distance from this second brake element 14, a further loading means 29 is shown, which is received by an adjusting unit 31 and is fixed to the bearing axis 12.
- the loading means 28, 29 are designed as permanent magnet rings, which in the embodiment shown in FIG. 1 have an equipolar arrangement, so that a repulsive effect is achieved between the two magnets.
- an axial force of the second brake element 14 is achieved on the first brake element 13, which experiences a counterforce through the stop 27, as a result of which the braking force is generated between the two brake elements 13, 14.
- the loading means 28, 29 are arranged on the brake element 14 and the setting unit 31 by an adhesive connection. Alternatively, the loading means 28, 29 can be arranged in a non-positive and / or positive manner.
- the setting unit 31 is designed as an adjusting nut which receives the magnetic ring 29.
- This adjusting nut is continuously adjustable in the axial direction on a thread 32 of the bearing axis, so that a fine adjustment of the braking force is made possible.
- the relationship applies to the attraction or repulsion forces that there is an approximately square relationship between the size of the attraction force and the distance.
- the thread 32 is advantageously designed as a self-locking thread, so that it cannot be easily adjusted due to vibrations caused by the textile machine.
- an adjusting unit 31 can be provided, which is adjustable in stages and can be locked in place by predetermined distances.
- Markings 33 can also be provided on the bearing axle 2, which can be provided, for example, by incorporated grooves or colored strips or the like, in order to enable the braking force of the braking elements 13, 14 to be preset. Furthermore, it may be possible that depending on the threads to be processed, a different braking force is required, which can be set quickly on the basis of the markings 33, so that quick changeover times can be given.
- the bearing axis 12 is advantageously made of non-magnetic material, so that a magnetic flux between the loading means 28, 29 and the bearing axis 12 is excluded. As a result, the force effect of the loading means 28, 29 can be significantly improved. However, it is entirely possible that the bearing axis 12 can also be made of ferromagnetic material, as will be explained below.
- the braking elements 13, 14 are advantageously made of ceramic or aluminum with a hard layer or preferably of non-magnetic steel. However, as already mentioned in the design of the bearing axis 12, it can be provided that the brake actuators 13, 14 are made of steel. It can also be provided that the braking element 14 with the loading means 28 is designed as a one-piece magnetic component which forms part of the thread brake 11 with a non-magnetic braking element 13.
- a cover 38 is advantageously provided on the second brake element 14.
- This cover 38 is arranged on the brake element 14 in a positive and / or non-positive manner.
- This cover 38 can also fix the loading element 28 to the braking element 14 without another Connection required for this.
- the cover can be fastened to the brake element 14 by means of a snap-snap or clamp connection. Alternatively, an adhesive connection can also be provided.
- the cover 38 is preferably designed as an injection molded part. Such a cover 38 can also be provided on the setting unit 31 and on the braking element 13.
- the bearing axis 12 is received by a spring-elastic holder 26, by means of which the natural vibration frequency of the textile machine can be introduced onto the bearing axis 12. This can make it possible for fluff deposits to be shaken off.
- the oscillation frequency can be transmitted to the brake elements 13, 14 and thus make it possible for the self-cleaning effect to be increased in a simple manner.
- the bearing axis 12 can alternatively be made at least in sections from resilient material such as plastic, and can also be fastened to the holder 26 via a rubber-elastic bearing in the case of a fixed holder 26 in order to use the vibration of the textile machine.
- the design of a thread brake 11 according to the invention enables a layer-independent arrangement and can thus be used for different yarns and textile threads in different textile processing machines.
- FIG. 2 shows an alternative embodiment of the thread brake 11 according to the invention to FIG. 1.
- the loading means 28, 29 are arranged with opposite poles, so that they have an attractive effect.
- the first braking element 13 is again in contact with a stop 27 and is limited to the left in the axial direction of movement. Due to the attractive magnetic effect of the load means 28, 29, the second brake element 14 with its load means 28 is pressed against the first brake element 13.
- the thread 32 is advantageously provided, on which the adjusting unit 31 is arranged to be movable along the longitudinal axis 12.
- the bearing axis 12 has a collar 34, so that the braking elements 13, 14 in the axial direction on both sides are secured.
- This collar 34 can connect directly to the bearing sleeve 22.
- a minimum distance is required between the stop 27 and the collar 34, so that the free rotation of the braking elements 13, 14 about the longitudinal axis 12 is provided without friction which could impede the free rotation.
- the holder 26 is arranged between the setting unit 31 and the stop 27.
- existing thread delivery devices with thread brakes known from the prior art are retrofitted by the thread brake according to the invention.
- a thread brake 11 can be created which does not require any change in the thread guide.
- the bearing axis 12 has an essentially eccentric thread guide slot 36, which extends so far that it extends over the area of the thread passage 37 of the thread brake 11. This can ensure that the thread is braked even without deflection and that stepping out of the thread brake can be avoided.
- the thread guide slot 36 can extend substantially axially parallel or at an oblique angle from a region laterally outside the brake elements to the region of the thread duct 37.
- bearing sleeves 22 can be provided which have the thread guide slot 36 described above.
- two guide pins can also be provided outside the thread brake, which are offset in parallel with respect to the bearing axis, so that the thread rests and is guided on the bearing axis with certainty.
- FIG 4 shows a schematic side view of one of the braking elements 13, 14 with a thread 23 which is deflected around a bearing sleeve 22.
- a force is transmitted from the thread 23 to the braking element 13, 14.
- the resulting tensile force of the thread 23 is shown in FIG Arrow 41 is composed of the force components in a tangential force according to arrow 42 and a radial force according to arrow 43.
- the tangential forces according to arrow 42 bring about a rotational movement in the direction of rotation according to arrow 44.
- this rotary movement is braked by a small amount of sliding friction between the bearing elements 19, 21 of the braking elements 13, 14 and the bearing element 19 and the stop 27.
- This state of equilibrium enables the driving torque and the reaction torque of the bearing to change in the same ratio with changing axial pressure and thus the changing braking force on the thread 23, so that an essentially constant slow rotational speed of the braking elements 13, 14 is set and the self-cleaning effect is ensured in any installation position.
- first and second brake elements 13, 14 can be provided on a bearing axis 12. It is only necessary that the braking element 14, which is the most distant from the stop 27, has a loading means 28 in the arrangement, for example, which repels itself and is attracting.
- a further improvement in the self-cleaning effect can be achieved in that the bearing openings 17, 18 of the brake elements 13, 14 surrounding the bearing axis 12 with play are made eccentric by a small amount, as a result of which a non-circular running can be achieved, through which the Thread abrasion can be removed even better from the inner area between the brake elements 13, 14.
- the setting unit 31 has means by which a motor-controlled setting is made possible. This can be done, for example, by using a long toothed belt which can engage on the adjustment unit 31 and thus can readjust one or more adjustment units 31 at the same time.
- Another advantage of the device according to the invention is that it enables simple replacement of a traditional thread brake which, for example, consists of two brake elements and a compression spring with an adjusting nut, which are arranged on a bearing axis.
- This requires that at least a second Brake element 14 with the load means 28 arranged thereon and an adjusting unit 31 with load means 29 can be used.
- the already existing first braking element 13 can continue to be used.
- an existing bearing axis made of ferromagnetic material can also be used.
- both the bearing axis 12, the brake elements 13, 14 and the setting unit 31 are installed on the holder 26.
- the thread brake according to the invention can also be used with bobbins for warping and slip systems, also called warping creels.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19531579 | 1995-08-28 | ||
DE19531579A DE19531579C1 (en) | 1995-08-28 | 1995-08-28 | Simple, widely applicable thread brake used in textile machinery |
PCT/EP1996/003262 WO1997008090A1 (en) | 1995-08-28 | 1996-07-24 | Tension device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0847369A1 true EP0847369A1 (en) | 1998-06-17 |
EP0847369B1 EP0847369B1 (en) | 1999-09-15 |
Family
ID=7770562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96926390A Expired - Lifetime EP0847369B1 (en) | 1995-08-28 | 1996-07-24 | Tension device |
Country Status (8)
Country | Link |
---|---|
US (1) | US5979810A (en) |
EP (1) | EP0847369B1 (en) |
JP (1) | JPH11511423A (en) |
KR (1) | KR19990044283A (en) |
CN (1) | CN1193946A (en) |
DE (2) | DE19531579C1 (en) |
TR (1) | TR199600662A2 (en) |
WO (1) | WO1997008090A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19708139A1 (en) * | 1997-02-28 | 1998-09-03 | Erich Roser | Thread delivery device, in particular for knitting and knitting machines |
DE19720795A1 (en) * | 1997-05-16 | 1998-11-19 | Sipra Patent Beteiligung | Thread brake and textile machine equipped with it and thread delivery device |
US6539101B1 (en) | 1998-04-07 | 2003-03-25 | Gerald R. Black | Method for identity verification |
DE60017667T2 (en) * | 1999-10-26 | 2005-07-07 | L.G.L. Electronics S.P.A., Gandino | Weft brake, in particular for weaving machines |
DE10045420A1 (en) * | 2000-09-14 | 2002-03-28 | Iro Patent Ag Baar | Disc brake |
US6439488B1 (en) | 2000-11-27 | 2002-08-27 | Bobby Hunter | Tensioning device for circular knitting machine |
DE10150504A1 (en) * | 2001-10-12 | 2003-04-17 | Iropa Ag | Yarn brake has a brake blade held against a braking surface by electromagnetic force, to be detached from the surface by the opening of a swing flap which exposes the yarn braking zone |
DE102004043867A1 (en) | 2004-09-10 | 2006-03-16 | Iro Ab | Yarn braking device |
DE102005007842A1 (en) | 2004-11-05 | 2006-05-11 | Iro Ab | Yarn braking device |
US9042608B2 (en) | 2010-10-25 | 2015-05-26 | Pen-One, Inc. | Data security system |
DE102011004814A1 (en) * | 2011-02-28 | 2012-08-30 | Zf Friedrichshafen Ag | Brake unit for industrial truck, has secondary magnetic element that is arranged in magnetic field of primary magnetic element so that magnetic force is produced between magnetic elements to press brake element to rotary disc |
CH706264A1 (en) * | 2012-03-21 | 2013-09-30 | Uster Technologies Ag | Plate thread brake for handling yarn, has annular disk provided in mechanical contact with guide pins and brake disks and braking rotating movement of one of brake disks due to friction on brake disk and guide pins |
CN102677383A (en) * | 2012-06-08 | 2012-09-19 | 慈溪太阳洲纺织科技有限公司 | Knitting yarn conveyer |
CN110240010A (en) * | 2019-06-26 | 2019-09-17 | 西安工程大学 | A kind of tension controller of high-performance fiber |
CN110668255A (en) * | 2019-11-09 | 2020-01-10 | 国网河南省电力公司新安县供电公司 | Cable arrangement device for power transmission line |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1070531B (en) * | 1959-12-03 | Deutsche Edelstahlwerke Aktiengesellschaft, Krefeld | Thread brake | |
DE864073C (en) * | 1950-06-11 | 1953-01-22 | Willy Kotte | Adjustable thread brake with two tension discs |
BE504693A (en) * | 1950-09-18 | |||
DE864072C (en) * | 1950-09-18 | 1953-01-22 | Barmag Barmer Maschf | Method and device for compensating for thread tension fluctuations on winding devices |
US2614773A (en) * | 1950-11-20 | 1952-10-21 | Mohawk Carpet Mills Inc | Tension device |
US3001946A (en) * | 1958-07-04 | 1961-09-26 | Rudolf Burger | Thread tensioning device for thread processing machines and devices |
CH353970A (en) * | 1958-07-04 | 1961-04-30 | Burger Rudolf | Thread tensioner for thread processing machines, e.g. sewing machines |
US3100091A (en) * | 1961-03-20 | 1963-08-06 | Lindley & Company Inc | Yarn tensioning device |
CH427592A (en) * | 1963-08-09 | 1966-12-31 | Palitex Project Co Gmbh | Thread brake on twin wire spindles |
DE2000268C3 (en) * | 1970-01-05 | 1974-07-18 | Karl Isac Joel Ulricehamn Rosen (Schweden) | Disc brake for threads |
US4462557A (en) * | 1982-10-18 | 1984-07-31 | Milliken Research Corporation | Spring biased electromagnetically controlled tension control |
DE4104663C1 (en) * | 1991-02-15 | 1992-08-13 | Memminger-Iro Gmbh, 7290 Freudenstadt, De | |
DE4130301A1 (en) * | 1991-09-12 | 1993-03-18 | Schlafhorst & Co W | ROTATING DRIVE BRAKE CONTROL ARRANGEMENT OF A THREAD TENSIONER |
US5238202A (en) * | 1992-04-15 | 1993-08-24 | Intronics, Inc. | Yarn tensioning apparatus |
DE4301507C2 (en) * | 1993-01-21 | 1995-01-26 | Memminger Iro Gmbh | Thread brake |
DE4409450C2 (en) * | 1994-03-18 | 1996-12-05 | Memminger Iro Gmbh | Thread braking device |
-
1995
- 1995-08-28 DE DE19531579A patent/DE19531579C1/en not_active Expired - Lifetime
-
1996
- 1996-07-24 DE DE59603097T patent/DE59603097D1/en not_active Expired - Fee Related
- 1996-07-24 WO PCT/EP1996/003262 patent/WO1997008090A1/en not_active Application Discontinuation
- 1996-07-24 EP EP96926390A patent/EP0847369B1/en not_active Expired - Lifetime
- 1996-07-24 CN CN96196482A patent/CN1193946A/en active Pending
- 1996-07-24 JP JP9509750A patent/JPH11511423A/en active Pending
- 1996-07-24 US US09/029,503 patent/US5979810A/en not_active Expired - Fee Related
- 1996-07-24 KR KR1019980701519A patent/KR19990044283A/en not_active Application Discontinuation
- 1996-08-15 TR TR96/00662A patent/TR199600662A2/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9708090A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0847369B1 (en) | 1999-09-15 |
WO1997008090A1 (en) | 1997-03-06 |
DE59603097D1 (en) | 1999-10-21 |
KR19990044283A (en) | 1999-06-25 |
DE19531579C1 (en) | 1997-01-23 |
US5979810A (en) | 1999-11-09 |
JPH11511423A (en) | 1999-10-05 |
TR199600662A2 (en) | 1997-03-21 |
CN1193946A (en) | 1998-09-23 |
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