EP2157217B1 - Klemmvorrichtung - Google Patents

Klemmvorrichtung Download PDF

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Publication number
EP2157217B1
EP2157217B1 EP20090007752 EP09007752A EP2157217B1 EP 2157217 B1 EP2157217 B1 EP 2157217B1 EP 20090007752 EP20090007752 EP 20090007752 EP 09007752 A EP09007752 A EP 09007752A EP 2157217 B1 EP2157217 B1 EP 2157217B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping device
clamping element
spindle
underwinding
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.)
Active
Application number
EP20090007752
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2157217A3 (de
EP2157217A2 (de
Inventor
Klaus Mette
Gottfried Staudenmaier
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Components GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saurer Components GmbH filed Critical Saurer Components GmbH
Publication of EP2157217A2 publication Critical patent/EP2157217A2/de
Publication of EP2157217A3 publication Critical patent/EP2157217A3/de
Application granted granted Critical
Publication of EP2157217B1 publication Critical patent/EP2157217B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a clamping device for a thread on a spindle of a spinning or twisting machine, wherein the substantially cylindrical clamping device is arranged on the spindle top part of the spindle, comprising a fixed clamping element and an axially displaceable, against the fixed clamping element by spring force can be pressed clamping element, which with a force directed against the spring force can be acted upon, which spaced the displaceable clamping element in the axial direction to the fixed clamping element, that forms a clamping gap between them, in which a thread to be clamped can be introduced.
  • EP-A-2 157 217 A2 shows a clamping device according to the preamble of claim 1.
  • a clamping device of the type described above is known, which is arranged on a spindle shaft.
  • the spindle shaft is inserted in a whorl, on which a sliding sleeve is pushed, which is displaceable in the longitudinal direction of the spindle shaft.
  • the sliding sleeve is displaceable by spring force against an arranged on the spindle shaft above the whorl underwinding crown to clamp a thread between the underwinding crown and the sliding sleeve.
  • the sliding sleeve can be actuated by means of the ring frame of a ring rail. In order to achieve a secure clamping of the thread, this is wound around the spindle shaft several times before the undercut thread between the flat clamping surfaces of the sliding sleeve and the underwinding crown is clamped.
  • the actuator To open such a clamping device, the actuator must be rotatable with respect to the spindle mounted clamping sleeve and the clamping sleeve relative to the spindle and thus also with respect to the spindle arranged on the federal government to be braked.
  • the clamping sleeve is closed with its wavy contour in the associated wave-shaped contour of the federal government performs relative to the federal government from a relative movement, which immediately leads to an axial displacement of the clamping sleeve on the spindle and thus to a certain opening of the clamping device due to the wavy contours ,
  • Object of the present invention is therefore to provide a clamping device that allows a rest-free submergence.
  • the clamping device has on one of its clamping elements on the clamping gap directed annular projection which is supported against a provided with an uninterrupted surface pressure surface of the other clamping element for clamping the thread and is characterized according to claim 1, characterized in that the clamping device comprises a Unterwindehülse, the the leadership of the displaceable clamping element is used, wherein the underwinding sleeve on its fixed Clamping element facing side is designed with an annular groove and arranged distributed over its circumference, extending in the axial direction webs, which extend to the annular groove, that the displaceable clamping element distributed over its circumference arranged, complementary to the webs guide webs and has that in the open position of the clamping device, the annular groove facing upper sides of the webs and the guide webs are at a level, so that forms a closed plane that defines the annular groove.
  • a thread introduced into the nip in the opened position of the clamping device is guided around the spindle in the nip without completely enclosing it.
  • the thread to be clamped may preferably extend like a chord through the nip, so that the thread only affects the spindle in the best case.
  • a reliable clamping action is achieved by the interaction of the annular projection with the pressure surface. If the clamping device is opened again during a doffing operation, then the thread, which has been clamped on the spindle essentially only at two points between the clamping elements due to the chord-like passage, is thrown off as a result of the rotation of the spindle.
  • the clamping device according to the invention thus enables a residue-free underwinding in a simple and reliable manner.
  • the underwinding sleeve can be fastened directly on the spindle shaft.
  • annular groove on their fixed clamping element facing side is limited by a circumferential, radial projection.
  • the webs and guide webs engage with mounted clamping device into one another and thus prevent rotation of the displaceable clamping element relative to the underwinding sleeve.
  • the annular projection can be designed tapering in cross section.
  • the clamping action can be enhanced because the clamping surface is linear, whereby the contact pressure increases on the thread in the two clamping points at chord-like passing of the thread on the spindle.
  • annular projection is rounded in cross section.
  • the projection preferably has a semicircular cross-section, which also touches the contact surface only in a line, so that at the two terminal points line pressure of the thread occurs, as is the case with the tapered shape of the annular projection described above.
  • the annular projection may be formed coaxially with the longitudinal axis of the spindle. This has the advantage that due to the symmetry, the production of the clamping element is simplified. In addition, the achievable clamping effect at each point in the nip is the same and independent of the position of the rotating spindle.
  • the pressure surface can be designed as a surface inclined to the longitudinal axis of the spindle.
  • the pressure surface outside the nip can have slot-shaped recesses. This can be avoided that the fixed in the clamping device thread is pulled out by a rotating around the spindle ring rotor, as the trapped thread slips into one of the slot-shaped recesses and hooked, so that the thread is fixed in the radial direction.
  • the fixed clamping element can be arranged on the underwinding sleeve.
  • the underwinding sleeve thus carries the essential components of the clamping device according to the invention, whereby the assembly of the clamping device is simplified, since this is assembled before its arrangement on the upper part of a spindle.
  • the fixed clamping element may be designed as an underwinding crown. This proves to be particularly favorable to sever the thread on a cutter of the underwinding crown when doffing the finished bobbin.
  • the displaceable clamping element can be designed as a sliding sleeve, which is guided on a Unterwindehülse.
  • a clamping device 1 which can be applied to a spindle upper part or a drive whirler of a spindle for a spinning or twisting machine.
  • the clamping device 1 serves to clamp a thread when doffing, for example, a finished cop.
  • clamping device 1 is centrifugally operated and can take two positions, a clamping position in which the thread is clamped between two clamping elements, as in Fig. 1 shown, and an open position in which the thread supplied, or the previously clamped thread can be released and thrown off, as in Fig. 3 shown.
  • the clamping device 1 comprises a Unterwindehülse 2, which is arranged on the spindle or a spindle arranged on the whorl. Furthermore, the clamping device 1 on a sliding sleeve 3, which is displaceable relative to the lower sleeve 2 in the longitudinal direction of the spindle. In the illustrated closed position of the clamping device 1, the sliding sleeve 3 is pressed by a coil spring 7 against an above the underwinding sleeve 2 arranged underwinding crown 4. In the Unterwindehülse 2 5 trained centrifugal elements are arranged as balls, which are guided in scenes 6.
  • centrifugally operated clamping device 1 The structure and operation of such a centrifugally operated clamping device 1 is the DE 10 2006 022 484 A1 to which reference is expressly incorporated herein by reference.
  • the actuation of the sliding sleeve 3 can also take place through the ring frame of a ring rail, if this is lowered during doffing and raised again or by an additional actuator with vertical direction of action, such as a rail which extends over a plurality of spinning stations and perpendicular to these is movable to operate the clamping device.
  • Fig. 3 shows the clamping device 1 in its open position, so that between the underwinding crown 4 and the sliding sleeve 3, a clamping gap 12 is formed, in which a thread to be clamped can be introduced.
  • the opening of the nip 12 is achieved in the operation of the spindle characterized in that at high speeds, the balls 5 are pressed in the scenes 6 due to the centrifugal force to the outside, wherein due to the inclination of the scenes 6, a relative movement of the sliding sleeve 3 relative to the underwinding sleeve 2, overcoming the spring force of the spiral spring 7, is achieved, which in detail in the DE 10 2006 022 484 A1 is described.
  • a previously clamped thread residue can be thrown off.
  • a thread is again inserted into the clamping gap 12 in preparation for the Doffvorganges, which surrounds the spindle with a wrap angle of less than 360 °.
  • the yarn is passed like a chord through the nip 12, so that the thread to be clamped only affects the spindle. Decreases the rotational speed of the spindle to a value below about 4000 min -1 from, then the centrifugal force acting on the balls 5, is not sufficient to overcome the force exerted by the coil spring 7 spring force.
  • the sliding sleeve 3 is moved relative to the underwinding sleeve 2 in the direction of the underwinding crown 4 and the nip 12 is thereby closed, whereby the thread is clamped.
  • FIG. 2 shown detail view A according to the Fig. 1 shows the Unterwindekrone 4, on whose the sliding sleeve 3 facing underside an annular projection 8 is arranged.
  • the projection 8 is in the closed position of the clamping device 1 to a contact surface 9 of the sliding sleeve 3.
  • the pressure surface 9 may preferably be designed conically on its spindle facing the inside, as well as on the outside facing away from the spindle of the sliding sleeve 3.
  • the underwinding sleeve 2 is provided with an annular groove 13 into which the thread to be clamped is introduced at least in sections.
  • FIG. 4 shows a detail view B according to the Fig. 3 in which the pressure surface 9 and the projection 8 of the underwinding sleeve 4 are spaced apart from each other, so that the clamping gap 12 is released. Furthermore, the illustration in FIG Fig. 4 in that nip-shaped recesses 10 are provided outside the clamping gap 12 on the sliding sleeve 3. The arrangement of the slot-shaped recesses 10 is such that they lie above a nip line which forms in the closed position of the clamping device 1 between the projection 8 and the pressure surface 9.
  • the slot-shaped recesses 10 serve to avoid the withdrawal of a trapped thread by a rotating around the spindle ring traveler, by acting in a radial direction on the trapped thread tensile force, which is caused by the ring traveler, this in the region of the two terminal points in one of the recesses 10 gets stuck or tilted.
  • the arrangement of the recesses 10 outside the clamping gap 12 has the additional advantage that the clamping thread experiences a deflection before entering the nip 12.
  • the annular groove 13 on the underwinding sleeve 2 is released in the open position of the clamping device 1.
  • annular groove 13 sets the thread to be clamped when it is fed in the open position of the clamping device 1, the thread enclosing the underwinding sleeve 2 at an angle of less than 360 °.
  • the annular groove 13 is limited in the axial direction to the underwinding crown 4 out by a circumferential, radially outwardly extending shoulder 14 on the underwinding sleeve 2.
  • Fig. 5 shows a perspective view of the underwinding sleeve 2 and the sliding sleeve 3 is explained below, as the groove 13 in the axial direction of the underwinding sleeve 2 on the underwinding crown 4th side facing away in the open position of the clamping device 1 is limited to avoid that fibers or dirt reach with released nip 12 between the lower sleeve 2 and the sliding sleeve 3.
  • the underwinding sleeve 2 evenly distributed over its circumference webs 15 which extend in the longitudinal direction of the underwinding sleeve 2 and which engage in complementary guide webs 16 on the sliding sleeve 3, which also extend on the sliding sleeve in the longitudinal direction.
  • the guide webs 16 and the webs 15 have a substantially rectangular cross-section.
  • the webs 15 extend in the axial direction of the underwinding sleeve 2 up to the groove 13, whereby this is partially limited on the side facing away from the underwinding crown 4 in the circumferential direction.
  • the upper sides of the webs 15 and the complementary guide webs 16 are at a height so that forms a horizontal plane below the groove 13, through which the formation of an annular gap between the lower sleeve 2 and the sliding sleeve 3 is prevented , in which 12 fibers and dirt can penetrate with open nip.
  • a second embodiment of the clamping device 1 is shown, which is substantially the clamping device 1 according to the Fig. 1 and 3 equivalent.
  • the difference lies in the design of the clamping zone, which is formed in the illustrated embodiment of the sliding sleeve 3 and the underwinding crown 4.
  • This is based on the Fig. 7 and 9 clearly, each showing a detail view C and D of the clamping device 1 in the closed or open position.
  • the sliding sleeve 3 in the region of the clamping gap 12 on a radially outwardly inclined pressure surface 11 which against the annular projection 8 of Underwinding crown 4 is pressed.
  • the surface of the pressure surface 11 may be roughened to support the clamping effect by static friction yet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20090007752 2008-08-23 2009-06-12 Klemmvorrichtung Active EP2157217B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008039502A DE102008039502A1 (de) 2008-08-23 2008-08-23 Klemmvorrichtung

Publications (3)

Publication Number Publication Date
EP2157217A2 EP2157217A2 (de) 2010-02-24
EP2157217A3 EP2157217A3 (de) 2010-03-24
EP2157217B1 true EP2157217B1 (de) 2015-02-25

Family

ID=41162005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090007752 Active EP2157217B1 (de) 2008-08-23 2009-06-12 Klemmvorrichtung

Country Status (4)

Country Link
EP (1) EP2157217B1 (zh)
JP (1) JP2010047893A (zh)
CN (1) CN101654825B (zh)
DE (1) DE102008039502A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013020470A1 (de) * 2013-12-03 2015-06-03 Saurer Components Gmbh Klemmvorrichtung zum Klemmen eines Fadens an einer Spindel einer Spinn- oder Zwirnmaschine und Spinn- oder Zwirnmaschine
DE102016007040A1 (de) * 2016-06-09 2017-12-14 Saurer Components Gmbh Fadenklemmvorrichtung
ES2916467T3 (es) * 2019-01-25 2022-07-01 Saurer Spinning Solutions Gmbh & Co Kg Unidad de carga y descarga para un dispositivo sujetahilo y dispositivo sujetahilo

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225964A1 (de) 1992-08-06 1994-02-10 Rieter Ag Maschf Spinnvorrichtung
DE19628826A1 (de) * 1996-07-17 1998-01-22 Lieser Gmbh Beteiligungsgesell Klemmvorrichtung für Fäden
ITMI980853A1 (it) * 1997-05-06 1999-10-22 Rieter Ag Maschf Dispositivo di filatura
DE19755971B4 (de) * 1997-05-06 2007-01-04 Maschinenfabrik Rieter Ag Spinnvorrichtung
DE19807740B4 (de) * 1997-06-06 2009-02-26 Rieter Nonwovens Gmbh Spindel für eine Ringspinn- oder Ringzwirnmaschine
EP0949366B1 (de) 1998-04-09 2003-05-07 Zinser Textilmaschinen GmbH Vorrichtung zum Klemmen eines Unterwindefadens an der Spindel einer Ringspinnmaschine oder Ringzwirnmaschine
DE29924497U1 (de) * 1999-03-08 2003-07-31 Zinser Textilmaschinen Gmbh, 73061 Ebersbach Vorrichtung zum Klemmen eines Unterwindefadens an der Spindel einer Ringspinnmaschine oder Ringzwirnmaschine
DE10161707B8 (de) * 2001-12-11 2012-09-13 Maschinenfabrik Rieter Ag Spinnvorrichtung
DE102006022484B4 (de) 2006-05-13 2017-04-27 Saurer Components Gmbh Klemmvorrichtung

Also Published As

Publication number Publication date
DE102008039502A1 (de) 2010-02-25
EP2157217A3 (de) 2010-03-24
CN101654825B (zh) 2013-06-12
CN101654825A (zh) 2010-02-24
EP2157217A2 (de) 2010-02-24
JP2010047893A (ja) 2010-03-04

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