EP2256238A1 - Dispositif de pince-fil pour une broche d'un métier à tisser ou d'une retordeuse - Google Patents

Dispositif de pince-fil pour une broche d'un métier à tisser ou d'une retordeuse Download PDF

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Publication number
EP2256238A1
EP2256238A1 EP10004384A EP10004384A EP2256238A1 EP 2256238 A1 EP2256238 A1 EP 2256238A1 EP 10004384 A EP10004384 A EP 10004384A EP 10004384 A EP10004384 A EP 10004384A EP 2256238 A1 EP2256238 A1 EP 2256238A1
Authority
EP
European Patent Office
Prior art keywords
clamping device
thread
thread clamping
spindle
elements
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
Application number
EP10004384A
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German (de)
English (en)
Other versions
EP2256238B2 (fr
EP2256238B1 (fr
Inventor
Gerd Stahlecker
Werner Zott
Nora Stopp
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.)
Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication date
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
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Publication of EP2256238B2 publication Critical patent/EP2256238B2/fr
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/38—Arrangements for winding reserve lengths of yarn on take-up packages or spindles, e.g. transfer tails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • 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 clamping device for a spindle of a spinning or twisting machine with a receptacle for attaching the thread clamping device to the spindle, with two mutually movable clamping elements for clamping a thread, with at least one loading element for closing the clamping elements with a loading force, and at least one Relief element for generating a load force opposing the relieving force, wherein the relief element is movable in the thread clamping device under centrifugal force with rotating spindle and wherein the clamping elements can be opened by the unloading force.
  • a thread clamping device of this type is by the WO 2007/131562 A1 State of the art.
  • the loading element which causes the clamping of the thread is formed in the known thread clamping device by a spring.
  • a plurality of relief elements are arranged in the form of balls, which are radially movable and are guided in half-shell-like guides.
  • the guides for the balls are designed so that the clamping elements for the thread open and close during a radial movement of the balls.
  • a thread clamping device of the aforementioned type is known in which the opening and closing of the clamping elements takes place at different spindle speeds.
  • a change of a cop sitting on the spindle, the so-called doff process, is facilitated if the thread underwinding can be done at low spindle speed and if after restarting the spinning or twisting machine, the thread remains fixed up to the highest possible spindle speed in the thread clamping device , This is done with the thread clamping device according to the WO 2007/065703 A2 realized.
  • the opening of the clamping elements in the acceleration phase of the spindle takes place at a high speed, the closing of the clamping elements in the deceleration phase of the spindle, however, at a low speed.
  • This behavior of the thread clamping device is achieved in that magnets are provided as loading elements. The magnets load the movable clamping elements by their attraction, thereby causing the clamping of the thread. Since the attraction of the magnets greatly reduced with increasing distance of the clamping elements, a very high unloading force, ie a high spindle speed is required to open the thread clamping device.
  • the invention has for its object to provide an improved thread clamping device.
  • the object is achieved in that a relief element at least two different positions are assigned in the thread clamping device, in which at a definable spindle speed from the relief element different discharge forces can be generated.
  • the relief element can exert different levels of relief forces, depending on which position it is in a thread clamping device can create that opens at a first spindle speed and at a second, different from the first spindle speed closes. Due to the variable unloading forces no magnets in the thread clamping device are required.
  • the loading force of at least one Loading element may be higher in the open state of the clamping elements than in the closed state of the clamping elements. This makes it possible to achieve the advantage that the clamping force of a thicker thread is greater than the clamping force of a thinner thread. During a Kops facialvorganges so thick yarns or threads can be held securely in the thread clamping device. Nevertheless, all load elements can be formed by very inexpensive spring elements.
  • a closed state of the clamping elements and a second position of a relief element is associated with an open state of the clamping elements a first position of a relief element, wherein the relief element in the first position with closed clamping elements a low unloading force and in the second position open clamping elements high discharge force can be generated.
  • This comparison is made at a predetermined and kept constant speed of the spindle.
  • This embodiment has the advantage that the clamping elements open in the acceleration phase of the spindle only at a high spindle speed and close again in the deceleration phase at a low spindle speed. The opening and closing of the thread clamping device happens when the unloading force and the loading force are in equilibrium.
  • the relief element can take two positions in the thread clamping device, in which it generates different relief forces, there are two limit speeds, in which the unloading force and load force are in equilibrium.
  • a relief element for opening the clamping elements from the first position to the second position movable, and falls below a lower limit than the lower limit speed is a relief element for closing the clamping elements of the second position back into the first position movable. Since only a low unloading force at a predefined spindle speed can be generated by the relief element in the first position, a higher spindle speed is required conversely until the unloading force is sufficient to release the loading force and bring the clamping elements into the open state.
  • the relief element In the deceleration phase of the spindle, the relief element is in the second position and generates accordingly - at the same speed - a higher unloading force.
  • the spindle speed can therefore be lowered to the lower limit speed without closing the clamping elements. Only when falling below the lower limit speed, the unloading force falls below the loading force, and leads to a closing of the clamping elements.
  • a relief element is formed by a substantially radially movable centrifugal force body.
  • a centrifugal body is advantageously formed by a ball.
  • At least two bearing surface are assigned to a centrifugal body.
  • a first contact surface is associated with the first position of the centrifugal force body and a second contact surface with the second position of the centrifugal force body.
  • the contact surfaces are at a different radius, which is defined by the distance of the contact surface to the center line of the receptacle for attaching the thread clamping device to the spindle. Since the centrifugal body moves radially from the first position to the second position and thereby opens the clamping elements, it is advantageous to arrange the contact surface assigned to the first position to a smaller radius than the contact surface assigned to the second position.
  • a tangent applied in the contact point between a centrifugal force body and a contact surface - viewed in axial section of the thread clamping device - has an angle to the center line of the receptacle, and that there is a tangent to a bearing surface lying on a small radius, which has a small angle to the center line of the receptacle, and that at a lying on a large radius bearing surface a tangent is present, which has a large angle to the center line of the recording.
  • the angle between the tangent and the center line determines the size of the unloading force with the same centrifugal force of the relief element.
  • a very simple thread clamping device can be created in which different relief forces can be generated by a relief element at a definable spindle speed.
  • the upper and lower limit speed can be adapted in a very simple manner by the geometry of the contact surfaces to the requirements.
  • On expensive magnets can be dispensed with.
  • An additional assembly step for the attachment of the magnets in the thread clamping device can be omitted.
  • An inventive thread clamping device can thus be produced in small quantities with little effort.
  • the tangent applied at the point of contact intersects the midline.
  • the tangent lies in the axial section plane of the receptacle. This results in a particularly good conversion of the centrifugal force generated by the centrifugal force in one of Loading force opposing unloading force.
  • the low angle is between 0 ° and 20 ° and is more preferably in the range of 5 ° to 10 °.
  • the large angle is advantageously between 60 ° and 80 ° and is particularly preferably in the range of 60 ° to 75 °.
  • a contact surface lying on a small radius may have a region which, viewed in axial section, encloses a small angle with the center line of the receptacle.
  • a contact surface lying on a large radius can have a region which, viewed in axial section, encloses a large angle with the center line of the receptacle. Areas of the contact surfaces that run straight in axial section can be produced particularly easily. Also, the unloading force generated by the centrifugal body is substantially constant over the rectilinear region of the contact surface, so that the influence of manufacturing tolerances on the upper and lower limit speed can be reduced. In an area extending in a straight line contact surface, the angle between the contact surface and center line corresponds exactly to the angle between the center line and a tangent applied to the contact surface of the centrifugal body tangent.
  • a contact surface for a centrifugal body is arranged on a deformable by centrifugal force component of the thread clamping device.
  • the centrifugal body and the deformable by centrifugal force component have a contact point in which a tangent can be applied.
  • This embodiment has the advantage that the angle of the tangent to the central axis of the recording changes during the acceleration phase of the spindle. At low spindle speeds, the angle of the tangent to the center line is very small, so that a high upper limit speed is reached by the additional component, in which open the clamping elements.
  • the deformable by centrifugal force component is preferably formed by a ring.
  • the center of the ring is preferably on the center line of the receptacle.
  • the ring may advantageously consist of a rubber-elastic material.
  • the ring is preferably arranged so that it does not hinder the movement of the centrifugal body when closing the clamping elements.
  • FIG. 1 a spindle 1 of a spinning or twisting machine is shown.
  • the spindle 1 consists of a rotating upper part 2 and a non-rotating bearing housing 3, which is fixedly mounted on a spindle bank, not shown.
  • the upper part 2 has a co-rotating shaft 4 which is mounted in the bearing housing 3 in a neck bearing 5 and a footrest, not shown.
  • the upper part 2 contains a whorl 6, via which it can be driven by a belt 7.
  • the thread clamping device 8 is mounted with a receptacle 9 on the spindle upper part 2.
  • the thread clamping device 8 is preferably releasably attached to the upper part 2 in order to be easily replaceable in the event of a defect.
  • the upper part 2 can receive above the thread clamping device 8, a spool sleeve, not shown, on which the yarn produced is wound up into a coil.
  • the Aufwindevorgang is carried out in a known manner by means of a raised and lowered ring rail, which extends over a plurality of juxtaposed in the machine spindles 1.
  • Each spindle 1 is associated with a likewise not shown spinning ring on which in known In this way, a rotor revolves, which in use gives the thread a rotation and leads it to the spool.
  • the thread clamping device 8 consists of a sleeve-shaped base body 10 which contains the receptacle 9 for the spindle 1. On the main body 10, an axially displaceable sleeve 11 is arranged. On the main body 10 and on the sleeve 11, a respective clamping element 12 and 13 is arranged. The clamping elements 12 and 13 include clamping surfaces 14 and 15, which may form a gap 16 for clamping a thread. The thread to be clamped is also called "underwind thread". The opened gap 16 between the clamping elements 12 and 13 is in FIG. 2 recognizable.
  • the thread clamping device 8 includes a loading element 17 in the form of a spring. The loading element 17 generates a loading force that presses the clamping element 13 on the sleeve 11 against the clamping element 12 on the base body 10, so that an underwinding thread between the clamping surfaces 14 and 15 can be clamped.
  • the movement of the sleeve 11 during opening and closing of the clamping elements 12, 13 is ensured by two guides 41 and 42.
  • a first guide in the region of the clamping element 13 is arranged.
  • a second guide 42 is spaced as far as possible from the first guide 41.
  • the guide 41 and the guide 42 are arranged so that the loading element 17 and the relief elements 18 seen in axial section between the two guides 41, 42 are located.
  • the spring 17 is guided and centered by the base body 10.
  • the thread clamping device 8 also includes a plurality of relief elements 18 for generating a load force opposing the load force.
  • a plurality of relief elements 18 for generating a load force opposing the load force.
  • two relief elements 18 are shown. It can be arranged evenly distributed on the circumference of the thread clamping device 8 several relief elements 18.
  • the relief element 18 is formed by a substantially radially movable Fiiehkraftmaschine 19 in the form of a sphere.
  • the ball is preferably made of steel.
  • the relief element 18 is in a first position.
  • the centrifugal body 19 is guided in a guide 20 in the main body 10.
  • the centrifugal body 19 is associated with a first bearing surface 21.
  • the contact surface 21 is arranged on the sleeve 11. Under centrifugal force with rotating spindle 1, the ball 19 applies to the contact surface 21 at.
  • the contact surface 21 closes a small Angle A with the center line 23 of the receptacle 9 a. By the angle A, the ball 19 generates a force in the axial direction of the center line 23 on the sleeve 11, which is opposite to the loading force of the spring 17.
  • the state of the thread clamping device 8 with open clamping elements 12, 13 is in FIG. 2 recognizable.
  • the centrifugal body 19 are in the second position and between the clamping surfaces 14 and 15, the gap 16 is opened. In this position, the centrifugal body 19 is associated with a second bearing surface 22 on the sleeve 11, which has an angle B to the center line 23 of the receptacle 9. The angle B is greater than the angle A.
  • the centrifugal force generated by the ball 19 at a given spindle speed in this second position is slightly larger, since the distance of the ball to the rotation axis 23 is slightly larger, the unloading force is the Ball 19 on the sleeve 11 due to the larger angle B much larger than in the first position.
  • the thread clamping device 8 closes when it falls below the upper limit speed at which the thread clamping device 8 had opened, not yet again. Only when falling below a lower limit speed, the relief force decreases so far that the discharge force falls below the loading force of the spring 17 and the sleeve 11 is pressed by the spring 17 back up.
  • the loading element 17 closes the clamping elements 12, 13 and the ball 19 moves back to the first position, see FIG. 1 ,
  • FIG. 3 is again the area around the ball 19 shown as a relief element 18 enlarged. It can be seen that the ball 19 rests against the guide 20 of the main body 10 and on the contact surface 21 of the sleeve 11. Due to the angle A of the contact surface 21 to the center line 23 is formed in the contact point 24 between the centrifugal body 19 and the contact surface 21 of the clamping force opposing unloading force.
  • the contact surface 21 has a region extending in a straight line in axial section.
  • the angle A of the contact surface 21 is thus identical to that of a tangent applied to the ball 19 at the contact point 24.
  • the second contact surface 22 has a large angle B to the center line 23.
  • the angle B is substantially greater than the angle A. This angle difference is achieved that the thread clamping device 8 opens at a high spindle speed, and only closes again at a much lower spindle speed.
  • the thread clamping device 8 closes and the underwinding thread is clamped between the clamping elements 12 and 13. Then the spindle is stopped and the full cop is pulled up from the upper part 2. The yarn end coming from the stretching or delivery unit remains clamped when pulling off the full cop in the thread clamping device 8 and the thread is separated between cop and thread clamping device 8.
  • the machine is started again. During the acceleration of the spindle 1, the ring rail is already raised again to a position so that the thread is wound onto the seated on the upper part 2 sleeve.
  • the thread clamping device 8 opens again and the thread end clamped in the gap 16 is ejected.
  • the lower limit speed is very low, for example of the order of about 1,000 to 2,000 l / min.
  • the design of the contact surfaces 21 and 22 can be varied. In the FIGS. 4 to 8 some advantageous variants are shown.
  • FIG. 6 an advantageous variant is shown, in which the contact surface 21 and the contact surface 22 are already curved. It can thereby achieve a particularly gentle transition of the ball 19.
  • the position of the ball 19 is shown with closed thread clamping device.
  • the right part of the FIG. 6 shows the ball 19 with open thread clamping device 8.
  • the tangent applied at the contact point 24 27 and its angle A to the center line 23 prevail.
  • the angle B of a tangent 28 in the contact point between the ball 19 and bearing surface 22 is relevant.
  • the angle A is preferably in the range between 5 ° and 10 °, particularly preferably about 6 °.
  • the angle B is advantageously in the range of 60 ° to 75 °, and in particular about 65 °.
  • FIG. 7 a variant is shown in which the contact surface 21 has a slight elevation.
  • the tangent 27 at the contact point 24 thereby has a very small angle A to the center line 23. This makes it possible to achieve a relatively high upper limit speed for opening the thread clamping device.
  • the sleeve 11 of the thread clamping device 8 contains a component 29 that can be deformed by the action of centrifugal force.
  • the contact surface 21, against which the centrifugal force element 19 rests when the thread clamping device 8 is closed, is arranged on the deformable component 29.
  • the tangent 27 applied in the contact point 24 in turn has a small angle A to the center line 23.
  • the deformable component 29 is advantageously formed by a ring 30.
  • the center of the ring 30 lies on the center line 23 of the receptacle.
  • the ring 30 is made of a rubber-elastic material. The ring 30 causes the thread clamping device 8 opens only at a high upper limit speed.
  • the spindle speed must become so high that the ring 30 widens due to the action of centrifugal force and thereby enables the ball 19 to change its position.
  • the deformable component 29 is not a hindrance to the moving from the second to the first position ball 19.
  • a corresponding arrangement of a ring 30 may in the embodiment according to FIG. 8 even the angle A of the tangent 27 to be reduced to a negative value, so that at the beginning of the acceleration phase of the centrifugal body 19, the clamping force of the clamping elements 12, 13 amplified and thereby the clamping action of the thread clamping device 8, especially with thick threads, further improved.
  • the angle A increases steadily until the ball 19 finally pushes over the ring 30 over.
  • FIGS. 9 and 10 an embodiment of a thread clamping device 8 is shown, in which the stroke of the sleeve 11 is greater than the diameter of the balls 19.
  • the stroke of the sleeve 11 is greater than the diameter of the balls 19.
  • the contact surfaces 21 and 22 are arranged on a radially inwardly projecting web 51.
  • the web 51 protrudes into a recess 52 of the base body 10.
  • the web 51 is arranged so that the ball 19 is centrally supported.
  • the guide 20 for the ball 19 in the main body 10 is formed so that the ball 19 is guided by two segment-shaped guide surfaces 53 and in the radial direction from the illustrated first position into a second Position similar to the illustration in FIG. 2 can move.
  • the guide surfaces 53 are formed by cutouts of peripheral surfaces of a cylinder.
  • the guide 20 and the contact surfaces 21, 22 arranged symmetrically to the ball center. The ball 19 is thereby guided very precisely, so that they do not jam in their radial movement.
  • FIGS. 3 to 8 illustrated embodiments of the contact surfaces 21, 22 in one embodiment according to the FIGS. 9 and 10 deploy.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP10004384.3A 2009-05-25 2010-04-26 Dispositif de pince-fil pour une broche d'un métier à tisser ou d'une retordeuse Active EP2256238B2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910023644 DE102009023644A1 (de) 2009-05-25 2009-05-25 Fadenklemmeinrichtung für eine Spindel einer Spinn- oder Zwirnmaschine

Publications (3)

Publication Number Publication Date
EP2256238A1 true EP2256238A1 (fr) 2010-12-01
EP2256238B1 EP2256238B1 (fr) 2014-05-07
EP2256238B2 EP2256238B2 (fr) 2018-11-14

Family

ID=42651398

Family Applications (1)

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EP10004384.3A Active EP2256238B2 (fr) 2009-05-25 2010-04-26 Dispositif de pince-fil pour une broche d'un métier à tisser ou d'une retordeuse

Country Status (4)

Country Link
EP (1) EP2256238B2 (fr)
JP (1) JP2010270430A (fr)
CN (1) CN101899730B (fr)
DE (1) DE102009023644A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100057754A (ko) * 2008-11-22 2010-06-01 외를리콘 텍스틸레 콤포넨츠 게엠베하 클램핑 장치
EP2530041A1 (fr) * 2011-05-31 2012-12-05 Maschinenfabrik Rieter AG Dispositif de pince-fil pour une broche de filature ou de retordage
EP2881351A1 (fr) * 2013-12-03 2015-06-10 Saurer Components GmbH Dispositif de serrage pour un fil sur une broche d'un métier à filer ou d'une retordeuse et retordeuse ou métier à filer
CN108468113A (zh) * 2017-02-23 2018-08-31 里特机械公司 夹紧设备、具有夹紧设备的转轴和用于制作夹紧设备的方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108138385B (zh) * 2015-11-06 2020-12-04 Ate私有企业有限责任公司 卷绕中的夹紧装置及其夹紧纱线的方法
CN111676555A (zh) * 2020-06-08 2020-09-18 山东祥瑞祥纺织有限公司 变支在59tex以上密度纱自动落纱环节中的应用

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE19628826A1 (de) 1996-07-17 1998-01-22 Lieser Gmbh Beteiligungsgesell Klemmvorrichtung für Fäden
WO2007065703A2 (fr) 2005-12-08 2007-06-14 Koenig Guenter Dispositif pince-fil pour des fils de sous-renvidage sur des broches d'un métier à filer à anneaux ou d'un métier à retordre à anneaux
WO2007131562A1 (fr) 2006-05-13 2007-11-22 Oerlikon Accotex Texparts Gmbh Dispositif de serrage

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JPH0315562Y2 (fr) * 1988-08-31 1991-04-04
JPH10140427A (ja) * 1996-11-05 1998-05-26 Howa Mach Ltd リング精紡機における停止方法及びリング精紡機
IT1299011B1 (it) * 1997-06-06 2000-02-07 Novibra Gmbh Fuso per un filatoio o torcitoio ad anelli
DE19746819A1 (de) * 1997-10-23 1999-04-29 Novibra Gmbh Vorrichtung zum Bilden und Auflösen einer Unterwindung
JP2001316948A (ja) * 2000-05-11 2001-11-16 Howa Mach Ltd リング精紡機における停止方法及びリング精紡機
DE102008058655B4 (de) * 2008-11-22 2019-01-10 Saurer Spinning Solutions Gmbh & Co. Kg Klemmvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628826A1 (de) 1996-07-17 1998-01-22 Lieser Gmbh Beteiligungsgesell Klemmvorrichtung für Fäden
WO2007065703A2 (fr) 2005-12-08 2007-06-14 Koenig Guenter Dispositif pince-fil pour des fils de sous-renvidage sur des broches d'un métier à filer à anneaux ou d'un métier à retordre à anneaux
WO2007131562A1 (fr) 2006-05-13 2007-11-22 Oerlikon Accotex Texparts Gmbh Dispositif de serrage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100057754A (ko) * 2008-11-22 2010-06-01 외를리콘 텍스틸레 콤포넨츠 게엠베하 클램핑 장치
EP2189408A3 (fr) * 2008-11-22 2014-01-08 Saurer Components GmbH Dispositif de serrage
EP2530041A1 (fr) * 2011-05-31 2012-12-05 Maschinenfabrik Rieter AG Dispositif de pince-fil pour une broche de filature ou de retordage
EP2881351A1 (fr) * 2013-12-03 2015-06-10 Saurer Components GmbH Dispositif de serrage pour un fil sur une broche d'un métier à filer ou d'une retordeuse et retordeuse ou métier à filer
CN108468113A (zh) * 2017-02-23 2018-08-31 里特机械公司 夹紧设备、具有夹紧设备的转轴和用于制作夹紧设备的方法

Also Published As

Publication number Publication date
EP2256238B2 (fr) 2018-11-14
EP2256238B1 (fr) 2014-05-07
CN101899730B (zh) 2015-06-24
DE102009023644A1 (de) 2010-12-02
CN101899730A (zh) 2010-12-01
JP2010270430A (ja) 2010-12-02

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