EP0357894A1 - Dispositif d'arrêt de la mèche d'un système d'étirage d'un métier à filer - Google Patents

Dispositif d'arrêt de la mèche d'un système d'étirage d'un métier à filer Download PDF

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Publication number
EP0357894A1
EP0357894A1 EP89110960A EP89110960A EP0357894A1 EP 0357894 A1 EP0357894 A1 EP 0357894A1 EP 89110960 A EP89110960 A EP 89110960A EP 89110960 A EP89110960 A EP 89110960A EP 0357894 A1 EP0357894 A1 EP 0357894A1
Authority
EP
European Patent Office
Prior art keywords
stop device
sliver
locking bolt
pull rod
grid recess
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.)
Withdrawn
Application number
EP89110960A
Other languages
German (de)
English (en)
Inventor
Gerhard Dipl.-Ing. Grau
Manfred Lattner
Helmut Nickolay
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen 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
Priority claimed from DE19883830069 external-priority patent/DE3830069A1/de
Priority claimed from DE19893902715 external-priority patent/DE3902715A1/de
Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Publication of EP0357894A1 publication Critical patent/EP0357894A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/18—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only
    • D01H13/185—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only a plate moving in the nip of drafting or guiding cylinders

Definitions

  • the invention relates to a sliver stop device for a spinning machine drafting system with a locking member arranged on the input lower roller, which is pivoted between the pair of input rollers when a thread breaks and a spring-loaded drawbar between the input roller pair and lifts the input upper roller, the pull rod being fixed during the sliver conveying by means of an electrically unlockable locking bolt is.
  • Such sliver stop devices have been used on spinning machines for a long time and have basically proven themselves.
  • a sliver stop device with a sliver guard assigned to the incoming sliver which, when the sliver is interrupted, switches a locking member entering the nip between the pair of input rollers, which lifts the top roller from the bottom roller and the fuse between itself and the top roller holds on.
  • the locking member is connected to a slide which is acted upon by a helical spring.
  • An electromagnet sits in a housing on a mounting rail, the armature of which engages with its free end forming a bolt in a catch of the slide and holds it in a locking manner against the force of the compression spring acting on it.
  • the cup-shaped locking member which engages around the input lower roller, is located outside of the nip between the input rollers.
  • the electromagnet If the electromagnet is excited by a current surge, which is given by a thread monitor assigned to the outgoing thread and responding to a thread break, its armature releases the locking of the slide. The locking member then penetrates under the force of the compression spring with its wedge-like longitudinal edge between the fuse and the input lower roller and interrupts the sliver conveyance.
  • the weak points of such devices can be seen especially in the area of the latch or the catch of the slide.
  • the frequent triggering of the match stop device leads to signs of wear on the catch and latch over time, i.e. the contact surfaces between these parts are designed in such a way that the slider is no longer securely fixed.
  • the invention is therefore based on the object of designing a match stop device of the type mentioned at the outset in such a way that the service life of the device is extended.
  • a secure fixation of the locking member spring-loaded via a slide or a pull rod should be ensured even after a long period of operation, and thus inadvertent triggering of the match stop device should be reliably excluded.
  • the undercut grid recess of the pull rod is designed in the manner of a dovetail guide.
  • the contour of the front edge of the grid recess is matched to the diameter of the adjacent locking bolt, which has a sleeve, preferably a plastic sleeve on the head side, ie the front edge of the grid recess is rounded concavely.
  • the plastic sleeve arranged on an end pin of the locking bolt has the shape of a truncated cone, so that the large diameter of the plastic sleeve is on the outside.
  • the truncated cone-shaped plastic sleeve grips behind the dovetail-like grid design of the pull rod and forms a secure, form-fitting lock, which reliably fixes the spring-loaded pull rod and thus the locking element of the sliver stop device even after a long period of operation.
  • the service life and operational safety of the match stop device are also positively influenced by the special material selection of the locking parts in engagement.
  • the locking bolt in its upper region after about a quarter of its total length, is provided with a circumferential groove.
  • a sleeve which also encloses a collar on the housing of the direct current lifting magnet. The cuff prevents the locking pin guide from becoming dirty within the lifting magnet and, as a result, also has an advantageous effect on the service life and operational safety of the match stop device.
  • These means are preferably fork-shaped pressure elements which are slidably guided in the bearing housing of the match stop device.
  • the pressure elements have a relatively long shaft enclosed by a spring element for guiding the pressure elements and two switching legs at the end.
  • the switching legs enclose the pull rod with play between them, so that the pull rod and thus the function of the match stop device are not hindered in normal operation.
  • An actuating head is arranged on the shaft of the pressure elements and serves as an abutment for the spring element surrounding the shaft.
  • the spring element on the other hand, is supported on the bearing housing and holds the pressure element in a normal position in which there is an unimpeded locking of the locking bolt into the grid recess of the pull rod.
  • openings in the bearing housing of the match stop device which allow the pull rod to be unlocked manually by means of a suitable tool.
  • These openings which are preferably formed as slots on both sides of the bearing housing, allow, for example, the insertion of a screwdriver, knife, etc. With the aid of such tools, the locking bolt can be inserted and the pull rod can be unlocked.
  • FIG. 1 shows a spinning machine drafting system, designated overall by 10, with a roving stop device 11.
  • Such drafting systems 10 which are known per se, are fastened with their load carrier 13 to a limited extent on a mounting rail 12 which extends over the entire length of the spinning machine.
  • the input upper rollers 14, the upper rollers 15 of the main drafting zone 16, the upper rollers 17 of the pair of delivery rollers 18 and the cleaning rollers 19 are arranged on the load carrier 13 of the drafting system 10.
  • the load carrier 13 and thus the resiliently mounted top rollers 14, 15, 17 can be lifted off the driven, machine-length bottom rollers 21, 22, 23 by means of a pivoting lever 20.
  • upper aprons 24 and lower aprons 25 are also provided, which span the upper rollers 15 and the lower rollers 22, respectively.
  • a telescopic sliver compressor 27 is arranged in the draft zone 26.
  • the sliver stop device 11 is, as usual, arranged in the area of the input roller pair 14, 21.
  • An essential component of the sliver stop device 11 is the locking member 29, which, partially encompassing the lower input roller 21, is pivoted between the pair of input rollers 14, 21 in the event of a thread break and thereby lifts the upper input roller 14 from the lower input roller 21. In this position, the fuse 28 is clamped between the bowl-shaped locking member 29 and the upper input roller 14 and thus the further supply of sliver is interrupted.
  • the locking member 29 is connected via a driver 30 to a pull rod 31 which, when acted upon by a helical spring 32, is displaceably guided in a bearing housing 33.
  • the coil spring 32 can be biased via the lever 34.
  • the locking bolt 35 is pulled down against the force of a spring (not shown) by the DC lifting magnet 36 and slides out of the grid recess 38 in the pull rod 31.
  • the coil spring 32 then pulls the pull rod 31 back and rotates the locking member 29 between the input roller pair 14, 21.
  • the cranked tie rods 31 preferably have a square cross section and are provided at the end with a groove 37 for connecting an abutment (not shown) for the coil springs 32.
  • An undercut grid recess 38 which is preferably designed in the manner of a dovetail guide, is incorporated into the tie rods 31 approximately in the middle between the offset and the groove 37.
  • the rear edge 40 of this grid recess 38 runs orthogonally to the longitudinal axis of the tie rods 31.
  • the front edge 39 is rounded concavely.
  • a locking bolt 35 which is displaceably and spring-loaded in a DC solenoid 36, fits into the grid recess 38.
  • the cylindrical locking bolt 35 is slightly offset in diameter at the end and has a relatively long pin 41 with an internal thread 42 at its lower end.
  • the pin 41 is used to guide a helical spring (not shown) which pushes the locking bolt 35 in its initial position, i.e. as long as the DC solenoid 36 is not energized, upwards in the direction of the grid recess 38.
  • the head-side, shorter pin 43 of the locking bolt 35 carries a plastic sleeve 44.
  • the plastic sleeve 44 is matched to both the shape and the material (preferably highly wear-resistant plastic) in such a way to the dovetail-like grid recess 38 of the pull rod 31 that in addition to a high functionality there is also a maximum service life of the match stop device.
  • a groove 45 in the upper part of the locking bolt 35 also serves this purpose.
  • a cuff 46 is fastened in this groove 45, as indicated in FIG. 2 on the right half of the figure.
  • the sleeve 46 which also includes a collar 47 on the housing of the DC solenoid 36, prevents dust and fluff from entering the locking pin guide.
  • This preferably one-piece pressure element 51 consists, as can be seen in particular from FIG. 6, of a relatively long shaft 52 which ends in two switching legs 53.
  • the switching legs 53 cover the pull rod 31 with play and are held in the normal position by the spring element 55 surrounding the shaft 52, just above the latching locking bolt 35.
  • An actuating head 54 is also attached to the shaft 52, which is somewhat larger in cross section than the shaft 52 and serves as an abutment for the spring element 55.
  • the switching limbs 53 are brought into contact with the end face of the locking bolt 35. Further depression of the actuating head 54 causes the locking bolt 35 to be pushed back into the DC solenoid. The plastic sleeve 44 of the locking bolt 35 slides out of the grid recess 38 and releases the pull rod 31. The pull rod 31 is then pulled back by the coil spring 32 and triggers the match stop device.
  • the bearing housing 33 has openings 56, for example slots, at the level of the pull rod 31.
  • a suitable tool 57 for example a screwdriver or the like, can be inserted through these slots, with the aid of which the locking bolt 35 can be depressed, as described above, and the pull rod 31 can thus be unlocked.
EP89110960A 1988-09-03 1989-06-16 Dispositif d'arrêt de la mèche d'un système d'étirage d'un métier à filer Withdrawn EP0357894A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3830069 1988-09-03
DE19883830069 DE3830069A1 (de) 1988-09-03 1988-09-03 Luntenstoppeinrichtung fuer ein spinnmaschinen - streckwerk
DE3902715 1989-01-31
DE19893902715 DE3902715A1 (de) 1989-01-31 1989-01-31 Luntenstoppeinrichtung fuer ein spinnmaschinen-streckwerk

Publications (1)

Publication Number Publication Date
EP0357894A1 true EP0357894A1 (fr) 1990-03-14

Family

ID=25871856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89110960A Withdrawn EP0357894A1 (fr) 1988-09-03 1989-06-16 Dispositif d'arrêt de la mèche d'un système d'étirage d'un métier à filer

Country Status (3)

Country Link
US (1) US4951357A (fr)
EP (1) EP0357894A1 (fr)
JP (1) JPH0299624A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032017A1 (de) * 1990-10-09 1992-05-07 Zinser Textilmaschinen Gmbh Streckwerk mit in lageverstellbaren lagerschlitten gelagerter unterwalze
FR2790770A1 (fr) * 1999-03-12 2000-09-15 Schlumberger Cie N Dispositif de securite de detection d'enroulements autour des rouleaux de pression superieurs et/ou des cylindres inferieurs d'une craqueuse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2712208T3 (es) * 2014-12-12 2019-11-13 Pinter Caipo S A U Dispositivo para interrumpir la alimentación de una mecha de fibras, y máquina de hilar hilo "Core" que incorpora dicho dispositivo
JP6369406B2 (ja) * 2015-07-08 2018-08-08 株式会社豊田自動織機 紡機の繊維束供給停止装置
USD879845S1 (en) * 2018-05-04 2020-03-31 Uster Technologies Ag Stopping device for roving on a yarn-spinning machine
DE102018112422A1 (de) * 2018-05-24 2019-11-28 Saurer Spinning Solutions Gmbh & Co. Kg Streckwerk sowie Steckwerkeinheit für eine Spinnmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318925A1 (de) * 1983-05-25 1984-11-29 Stahlecker, Fritz, 7347 Bad Überkingen Vorrichtung zum unterbrechen der zufuhr eines vorgarns an einem streckwerk
DE3536913A1 (de) * 1985-10-16 1987-04-16 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zur steuerung einer luntenstop-anordnung einer spinnmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807161A (en) * 1970-05-18 1974-04-30 Deering Milliken Res Corp Roving stop
IT1140368B (it) * 1981-01-02 1986-09-24 Skf Kugellagerfabriken Gmbh Dispositivo di bloccaggio dello stoppino in stiratoi di filatoi
CH658474A5 (de) * 1982-05-18 1986-11-14 Skf Kugellagerfabriken Gmbh Luntensperrvorrichtung an spinnmaschinen-streckwerken.
DE3606609A1 (de) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh Luntenstopp-vorrichtung am streckwerk einer spinnmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318925A1 (de) * 1983-05-25 1984-11-29 Stahlecker, Fritz, 7347 Bad Überkingen Vorrichtung zum unterbrechen der zufuhr eines vorgarns an einem streckwerk
DE3536913A1 (de) * 1985-10-16 1987-04-16 Zinser Textilmaschinen Gmbh Verfahren und vorrichtung zur steuerung einer luntenstop-anordnung einer spinnmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032017A1 (de) * 1990-10-09 1992-05-07 Zinser Textilmaschinen Gmbh Streckwerk mit in lageverstellbaren lagerschlitten gelagerter unterwalze
FR2790770A1 (fr) * 1999-03-12 2000-09-15 Schlumberger Cie N Dispositif de securite de detection d'enroulements autour des rouleaux de pression superieurs et/ou des cylindres inferieurs d'une craqueuse
DE10010571C2 (de) * 1999-03-12 2002-06-27 Schlumberger Cie N Sicherheitseinrichtung zur Erfassung von Wickelbildungen um obere Druckrollen und/oder untere Zylinder einer Reißeinheit

Also Published As

Publication number Publication date
US4951357A (en) 1990-08-28
JPH0299624A (ja) 1990-04-11

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