EP1771609A1 - Frein pour rotor de filage - Google Patents

Frein pour rotor de filage

Info

Publication number
EP1771609A1
EP1771609A1 EP05731240A EP05731240A EP1771609A1 EP 1771609 A1 EP1771609 A1 EP 1771609A1 EP 05731240 A EP05731240 A EP 05731240A EP 05731240 A EP05731240 A EP 05731240A EP 1771609 A1 EP1771609 A1 EP 1771609A1
Authority
EP
European Patent Office
Prior art keywords
rotor
brake
spinning
housing
stop
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
EP05731240A
Other languages
German (de)
English (en)
Other versions
EP1771609B1 (fr
Inventor
Wilhelm Birkenmaier
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
TEXparts 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 TEXparts GmbH filed Critical TEXparts GmbH
Publication of EP1771609A1 publication Critical patent/EP1771609A1/fr
Application granted granted Critical
Publication of EP1771609B1 publication Critical patent/EP1771609B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping

Definitions

  • the invention relates to a rotor brake for a spinning rotor of a rotor spinning machine according to the preamble of claim 1.
  • the shaft of the spinning rotor is mounted in double-row bearings.
  • the drive of such an embodiment is usually carried out by a tangential belt which acts directly on the shaft of the spinning rotor.
  • the bearing of the rotor shaft is clamped in an elastic damping sleeve, which is held in the rotor housing.
  • the rotor housing is pivotally mounted on a housing part, which comprises the elements for the supply, the dissolution and the feeding of the fiber material.
  • the housing part itself is pivotally supported on a stationary frame part of the rotor spinning machine and fixed by means of a lock in the spinning position required for the spinning process.
  • the lock is released and the rotor housing and the housing part by hand pivoted away from the spinning position.
  • a protruding nose of a brake pawl is hooked to the support plate of the machine frame.
  • the abruptly applied system pressure of the nose on the support plate causes a pivoting movement of the brake pawl, which is thus brought abruptly with its brake pad in contact with the rotor shaft and stops the rotation of the spinning rotor.
  • This braking process prevents that when the spinning box is open, it is possible to reach into the spinning spinning rotor, which is still rotating at high speed.
  • the brake pawl holds the entire spin box, and the spin box is supported on the bearing shaft on the brake pawl.
  • a similar rotor spinning unit is described for example in the generic DE 24 05 499 A.
  • the bearing assembly for the spinning rotor is held in a bearing shell. Between the bearing assembly and the bearing shell, an elastically resilient bearing ring is arranged, which prevents the occurrence of disturbing vibrations or running noise.
  • a housing part in which the Faserzu Semivorides is arranged, removed from a bearing shell holding carrier of the spinning unit and the rotor shaft lifted from the drive belt and brought into abutment with a brake shoe.
  • the housing part is rotatably mounted on a pivot pin of the housing frame of the spinning unit.
  • the subclaims are directed to advantageous embodiments of the rotor brake.
  • the spring constant of the spring can be selected and their arrangement and the arrangement of the stop of the retaining pawl are made so that can be exercised from the beginning of a defined braking force without force peak on the rotor shaft. Damage to the storage of the spinning rotor is safely avoided.
  • a pre-assembled assembly according to claim 3 simplifies the assembly and allows the replacement of an existing, known brake pawl against a holding pawl according to the invention.
  • FIG. 1 is a side view of a known spin box in spinning position in a simplified representation, 2, the spinning box of Fig. 1 in an open position in section,
  • FIG. 4 is a simplified side view of a spinning box in the spinning position with a rotor brake according to FIG. 3,
  • Fig. 7 is a side view of the spin box of Fig. 4 in the braking position.
  • Figures 1 and 2 show a known spin box 1.
  • a support plate 3 and a pivot tube 4 are attached on a traverse 2 of the rotor spinning machine as a part of the frame.
  • the cover element 5 contains components for the fiber supply, the fiber dissolution and the fiber feed into the spinning rotor 6, which are not shown in detail in the figures.
  • the spinning rotor 6 is mounted in the rotor housing 11 by means of a bearing 7, which comprises an elastic damping sleeve 8 and ball sets 9, 10.
  • the elastic damping sleeve 8 has on both sides support flanges 20, 21 with a slightly smaller diameter than the bore of the rotor housing 11.
  • the support flanges 20, 21 act as a limitation of the deflection of the bearing 7 under load.
  • the spin box 1 has a brake pawl 14, which can engage the free end of the rotor shaft 12.
  • the brake pawl 14 is pivoted away in the illustration of FIG. 1 of the rotor shaft 12 and does not touch them. By gravity, the brake pawl 14 remains in this position as long as the spin box 1 is in the spinning position.
  • the rotor housing 11 is pivotally connected to the cover element 5 by means of a pivot axis 15.
  • the lid member 5 in turn is pivotally supported on the pivot tube 4.
  • Fig. 1 shows the known spin box 1 in the spinning position
  • Fig. 2 shows the spinning box 1 in the opening or stop position.
  • the cover element 5 and the pivot tube 4 in the illustration of Figures 1 and 2 in the clockwise direction about the pivot tube 4 and the rotor housing 11 is pivoted counterclockwise about the pivot axis 15 in a simultaneous movement by manual operation ,
  • the underside of the rotor housing 11 slides along the lower edge 16 of an opening 17 of the support plate 3 along until the brake pawl 14 strikes the support plate 3 with the pawl hook 18.
  • a force is applied in the direction of the arrow Fl, which generates a counter force in the direction of the arrow F2 when striking the latch hook 18 to the support plate 3, with which the latch hook 18 is acted upon.
  • There is a pivoting of the pawl hook 18 is effected about the pivot axis 19, whereby the pawl hook 18 is pressed with a braking force in the direction of arrow F3 on the free end of the rotor shaft 12 and the spinning rotor 6 is stopped.
  • the rotor shaft 12 is supported on the ball sets 9, 10 of the bearing 7 from.
  • the force indicated by the arrow F2 is applied abruptly or abruptly, and there is an undesirable, high force peak.
  • the power flow runs, as described, on the ball sets 9, 10, and the force peak leads to a contact of the support flanges 20, 21 with the rotor housing 11.
  • the high force acts largely unimpeded on the balls of the ball sets 9, 10 and their careers the rotor shaft 12 a.
  • the balls of the ball sets 9, 10 and the raceways can be damaged. This can lead to bearing failure and consequential damage to other components of the spin box 1.
  • Fig. 3 shows a part of a rotor brake 22 according to the invention in section.
  • the rotor brake 22 includes a retaining pawl 23 with latch hook 31, latch stop 24 and brake lever stop 25 and a brake lever 26 with brake pad 27 and the spring 28.
  • the spring 28 is designed as a U-shaped leaf spring.
  • the spring can be for example be designed as a double-sided, wound leg spring.
  • Brake lever 26 and retaining pawl 23 are pivotable about the pivot axis 29.
  • Fig. 3 shows the rotor brake 22 in the rest position. In this rest position, the brake lever 26 is pressed by the spring 28 against a path of the brake lever 26 limiting brake lever stop 25 and does not touch the rotor shaft 12 of the spinning rotor 6.
  • FIGs 4 and 5 show a spinning box, which differs from the spinning box 1 in Figure 1 and 2 essentially only in that it has a rotor brake 22 according to the invention instead of the known brake pawl 14.
  • the rotor brake 22 is shown in the rest position during the spinning process.
  • the free end of the rotor shaft 12 is in this spinning position on the drive belt 13 and is offset from this in rotation.
  • the brake pad 27 is pivoted away from the rotor shaft 12 and the latch stop 24 from the stop surface 30 on the rotor housing 11.
  • the retaining pawl 23 together with pawl hook 31 is held by gravity in this position.
  • Brake lever stop 25 pressed.
  • the brake lever stop 25 is part of the retaining pawl 23 and limits the pivoting range of the brake lever 26, so that it can not touch the rotor shaft 12, as the sectional view of the spinning position in Fig. 5 can be seen.
  • the retaining pawl 23, the brake lever 26 and the spring 28 are independently pivotable about the common pivot axis 29.
  • Fig. 6 shows the rotor brake 22 in the braking position.
  • Cover element 5 and rotor housing 11 of the spin box 1 have after a pivoting movement about the pivot tube 4 or about the pivot axis 15, the opening or stop position taken. The movement has been limited by the stop of the pawl hook 31 of the retaining pawl 23 to the support plate 3.
  • the counterforce which acts in the direction of the arrow F2 when the latch hook 31 stops, acts on the holding pawl 23 with a pivoting movement about the pivot axis 29 in the illustration of FIGS. 6 and 7 in the counterclockwise direction.
  • the pivoting of this pivotal movement of the retaining pawl 23 is limited by the latch stop 24.
  • the pivoting movement is stopped by the impact of the pawl stop 24 on the stop 30 of the rotor housing 11. Since the opposing force is absorbed by the stop 30 of the rotor housing 11, the power flow takes place even with a sweeping movement of the spin box 1 not on the storage 7.
  • Brake lever stop 25 has, since it is part of the retaining pawl 23, the pivotal movement of the retaining pawl 23 in accordance with a position closer to the rotor shaft 12 taken.
  • the pivoting path that the brake lever 26 can still travel in the direction of the brake lever stop 25 independently of the holding pawl 23 is now sufficiently long to allow the brake lining 27 to engage the rotor shaft 12 without being stopped by the brake lever stop 25.
  • the spring 28 is pivotable about the pivot axis 29, is supported on the retaining pawl 23, as shown in Fig.
  • the rotor brake 22 is compact and space-saving design. It has, as shown in Figures 3 to 7, as an assembly substantially the same outer dimensions as the known, shown in Figures 1 and 2, brake pawl 14 and is disposed at the same position and pivotable about the same pivot axis 15.
  • the pawl hook 31 of the rotor brake 22 according to the invention is located at the same position as in known rotor brakes of the pawl hooks 18 of the known brake pawl 14.
  • the known brake pawls 14 can be replaced quickly and easily against rotor brakes 22 according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

Selon l'invention, l'arbre d'un rotor de filage d'un métier à filer à rotor est monté directement dans un carter de rotor et il peut être freiné jusqu'à l'arrêt au moyen d'un frein de rotor agissant sur l'arbre de rotor et se présentant sous la forme d'un frein à mâchoires. Lors du filage, la chambre de filage entourant la tasse du rotor de filage est fermée par un élément de recouvrement relié de façon articulée au carter du rotor. Un loquet de maintien (23) est monté de façon pivotante sur le carter du rotor, ce loquet étant relié de façon articulée à un levier de frein (26) supportant la garniture (27) du frein de rotor (22). Lors du filage, la garniture (27) n'est pas en contact avec l'arbre du rotor. Lorsque la chambre de filage est ouverte, l'élément de recouvrement et le carter du rotor pivotent ensemble par l'intermédiaire de leur liaison articulée. Le mouvement du carter du rotor est limité par une butée contre une partie structurelle du métier à filer à rotor. Dans la position de butée, la garniture (27) du levier de frein (26) est plaquée contre l'arbre du rotor au moyen d'un élément élastique. Le frein de rotor (22) selon l'invention permet d'éviter une surcharge brusque de la suspension du rotor de filage.
EP05731240A 2004-07-21 2005-04-14 Frein pour rotor de filage Not-in-force EP1771609B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410035271 DE102004035271A1 (de) 2004-07-21 2004-07-21 Rotorbremse für einen Spinnrotor
PCT/EP2005/003940 WO2006007887A1 (fr) 2004-07-21 2005-04-14 Frein pour rotor de filage

Publications (2)

Publication Number Publication Date
EP1771609A1 true EP1771609A1 (fr) 2007-04-11
EP1771609B1 EP1771609B1 (fr) 2011-01-26

Family

ID=34964304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05731240A Not-in-force EP1771609B1 (fr) 2004-07-21 2005-04-14 Frein pour rotor de filage

Country Status (4)

Country Link
EP (1) EP1771609B1 (fr)
CN (1) CN100532662C (fr)
DE (2) DE102004035271A1 (fr)
WO (1) WO2006007887A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013011121A1 (de) * 2013-07-03 2015-01-08 Saurer Germany Gmbh & Co. Kg Offenend-Spinnvorrichtung
DE102017104141A1 (de) * 2017-02-28 2018-08-30 Maschinenfabrik Rieter Ag Offenendspinnvorrichtung mit einer Kupplungseinrichtung für Versorgungsleitungen
EP3489397A1 (fr) * 2017-11-27 2019-05-29 Savio Macchine Tessili S.p.A. Machine de filage à bout libre présentant un système de freinage amélioré de l'arbre de rotor
CN107988666A (zh) * 2018-01-09 2018-05-04 李炳烘 一种单锭机械旋转式环锭纺假捻装置及细纱机
EP3754061A1 (fr) * 2019-06-17 2020-12-23 Saurer Czech s.r.o. Ensemble de rotor de filage pour une machine à filer à rotor à bout libre

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1327328A (en) * 1970-10-08 1973-08-22 Daiwa Spinning Co Ltd Oepn end spinning machines
CS159390B1 (fr) * 1971-06-16 1975-01-31
GB1461942A (en) * 1973-02-05 1977-01-19 Toyoda Automatic Loom Works Open-end spinning unit
JPS5434038Y2 (fr) * 1973-10-31 1979-10-19
CH594078A5 (fr) * 1975-06-03 1977-12-30 Nuova San Giorgio Spa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006007887A1 *

Also Published As

Publication number Publication date
DE102004035271A1 (de) 2006-02-16
WO2006007887A1 (fr) 2006-01-26
EP1771609B1 (fr) 2011-01-26
CN100532662C (zh) 2009-08-26
DE502005010911D1 (de) 2011-03-10
CN1965116A (zh) 2007-05-16

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