EP0038449B1 - Dispositif d'arrêt électrique pour une machine textile - Google Patents

Dispositif d'arrêt électrique pour une machine textile Download PDF

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Publication number
EP0038449B1
EP0038449B1 EP81102488A EP81102488A EP0038449B1 EP 0038449 B1 EP0038449 B1 EP 0038449B1 EP 81102488 A EP81102488 A EP 81102488A EP 81102488 A EP81102488 A EP 81102488A EP 0038449 B1 EP0038449 B1 EP 0038449B1
Authority
EP
European Patent Office
Prior art keywords
sliver
pivotable element
electrical
stop device
rocker
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.)
Expired
Application number
EP81102488A
Other languages
German (de)
English (en)
Other versions
EP0038449A1 (fr
Inventor
Heinz Clement
Christina Furrer
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
Original Assignee
Maschinenfabrik Rieter AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4249192&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0038449(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Priority to AT81102488T priority Critical patent/ATE14026T1/de
Publication of EP0038449A1 publication Critical patent/EP0038449A1/fr
Application granted granted Critical
Publication of EP0038449B1 publication Critical patent/EP0038449B1/fr
Expired 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
    • D01H13/1616—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 characterised by the detector
    • D01H13/1625—Electro-mechanical actuators

Definitions

  • the present invention relates to an electrical storage device for a textile machine fed with slivers, in particular a draw frame, with a rocker that can be tilted between a working position and a storage position per sliver, the tilting of which is caused by the sliver running out, and the actuation of an electrical shut-off contact evokes.
  • the new beginning of the belt can be connected to the end by hand, which is done by "twisting", so that there is no faulty spot in the sliver leaving the machine.
  • twisting so that there is no faulty spot in the sliver leaving the machine.
  • a certain sliver of fiber with a lower fiber content is inevitably produced, which must be eliminated if one does not take the risk of producing faulty finished products (fabrics, Knitted, etc.) wants to run.
  • the then necessary threading operation of the new beginning of the tape in the drafting device is considerably more complicated and time-consuming in terms of operating technology than the simple "twisting" described above.
  • a parking device for textile machines in which a bow-shaped, balanced contact rail without direct contact with the sliver is arranged below it so that when the broken sliver falls on it, it immediately goes out of balance and changes into a switch position .
  • this device has the disadvantage that it can only function if the sliver, viewed in the direction of travel, breaks in front of the contact rail, so that the outgoing end of the band is forced to fall on the contact rail and cause it to tip over. If, on the other hand, the belt is above the infeed table breaks, the textile machine cannot be safely parked by this device.
  • the present invention has for its object to propose an electrical parking device of the type mentioned, in which the above-mentioned disadvantages of the known devices are eliminated and which above all ensures absolute operational reliability.
  • Claims 2, 3, 5 and 6 show embodiments of the parking device according to the invention which represent particularly favorable solutions with regard to the response speed of the parking device.
  • Claim 4 corresponds to a very favorable embodiment of the electrical parking device with regard to its operational safety, while claim 7 relates to a particularly simple and inexpensive variant of the parking device.
  • the infeed table 1 (Figs. 1 and 2) of a draw frame (not shown in Figs. 1 and 2 and shown here as representative of a whole range of textile machines) has the task of a plurality of fiber tapes 2 to the work organs of the textile machine, e.g. the drafting system in the case of a line, ordered, i.e. parallel to each other.
  • pairs of rollers 4/5 are attached to the side edges 3 of the table diverging towards the machine, the lower roller 4 of each pair being fixedly mounted on the edge of the table 3 and being driven by means not shown (e.g. toothed belt).
  • the upper roller 5 is normally designed as a pressure roller, i.e.
  • Such a missing tape feed can have various causes: it can be the result of exhausting the can contents or a sliver break between the can 6 and the corresponding pair of rollers 4/5. However, e.g. also occur that the sliver 2 on the table 1, i.e. between the pair of rollers 4/5 and the working elements (not shown) breaks, making further transport of the belt 2 on the table 1 impossible. In all these cases, the storage device according to the invention should safely and above all quickly shut down the entire textile machine, in any case in such a way that the end of the sliver that remains runs on the table 1 and can be connected there by hand to the beginning of a sliver.
  • the electrical storage device essentially consists, according to the invention, of a rocker 7 assigned to each fiber sliver 1 and tiltable between a working position and a storage position, which, as shown in FIGS. 1 and 2, on the side edge 3 of the table 1, in the immediate vicinity of the pair of rollers 4 / 5, is supported so that it can be coupled about a tilt axis 8.
  • FIGS. 1 and 2 show the constructional details and the mode of operation of the parking device according to the invention in an enlarged schematic representation.
  • the corresponding elements in FIGS. 1 and 2 are also designated with the same reference numbers here.
  • FIG. 3a shows the parking device according to the invention while the machine is running correctly.
  • the rocker 7 is shown here in its working position A, in which, according to the invention, it is located under the normal running sliver 2, without touching it and tiltable about the tilt axis 8.
  • the rocker 7 according to the invention has such a mass distribution that it moves clockwise in the working position A shown here (in this illustration, in which the sliver 2 moves on the table 1 from right to left according to arrow n)
  • Directed torque m is about the tilt axis 8 and thus is held against a stationary stop 9.
  • the rocker 7 can be tilted counterclockwise only by overcoming the self-holding force caused by the torque m and by passing a dead position in which the torque m becomes zero.
  • FIGS. 3b and 3c denote a contact point which is electrically insulated from the infeed table 1 in a manner known per se (cf. the examples in FIGS. 4 to 6).
  • the contact of this contact point 10 with the rocker 7 closes an electrical low-current monitoring circuit which is also known to any person skilled in the art, with which the drive motor (not shown) of the machine is immediately switched off.
  • the contact point 10 together with the rocker 7 forms a shut-off contact for the machine.
  • the tilting of the Rocker 7 from the working position A to the storage position B can be done for two basic reasons, corresponding to two basic errors in the working conditions of the machine. These two cases are shown schematically in FIGS. 3b and 3c.
  • 3b shows what happens when the material runs out of the can 6, that is to say the can 6 is empty, or when the delivery of the sliver 2 from the can 6 is interrupted.
  • the pair of rollers 4/5 no longer feeds belt 2, so that a free belt end 11 must run over the rocker 7.
  • the free end of the sliver 11 must be there, since the sliver 2 is no longer clamped between the roll 4/5 and thus can no longer run over the rocker 7 while maintaining a distance, as during correct operation according to FIG. 3a, on the Rocker 7 fall and run through it with a stroke.
  • the moment m now only has to be so great that the influence of the outgoing band end 11 on the rocker 7, acting in the opposite direction to m, causes the rocker 7 to quickly and reliably tip over in the counterclockwise direction.
  • the influence of the belt end is based on two forces, namely the weight of the belt itself and the friction generated by its sliding movement from right to left on the rocker surface 12. The sum of these two forces must be able to overcome the moment m, with which the rocker 7 immediately tips over and comes to a stop on the contact point 10 and thus falls into the storage position B. The machine is shut down immediately.
  • Fig. 3c the mode of operation of the storage device according to the invention is shown in the case of the second basic error, namely when the sliver on the infeed table 1, i.e. after the pair of rollers 4/5 for some reason, e.g. because of excessive tension, breaks.
  • the pair of rollers 4/5 conveys further sliver, which, however, is no longer removed and thus accumulates on the seesaw 7 as a pile of fibers 13.
  • the rocker 7 is placed in the immediate vicinity of the pair of rollers 4/5, as shown in FIGS.
  • the sliver 2 from the clamping point of the Roller pair 4/5 is "shot out" with relatively high inertia, so that it preferably sits on the left side of the rocker 7, which causes it to immediately tip over into the storage position B.
  • the dimensioning of the rocker 7 is therefore advantageously chosen taking into account the working speed of the machine so that the process described can be done without wasting time, which is very easy to determine experimentally.
  • the rocker 7 shows a favorable form of a rocker 7 in a larger perspective view.
  • the rocker 7 consists of two legs 14 and 15, which are connected in the middle by a hub 16.
  • the hub 16 has a bore in which the tilt axis 17 can be accommodated with a sliding seat.
  • the tilting arm 17 is attached to a vertical edge 18 of the inlet table 1.
  • the edge 18 is opposite the horizontal surface 19 of the inlet table 1 by means of e.g. an insulation layer 20 electrically insulated.
  • the weight of the leg 15 is higher than that of the leg 14, so that the moment m can also act on the rocker 7 in a clockwise direction.
  • the left leg 14 of the rocker 7 has two features which are very favorable in terms of the speed of recession and the reliability of the parking device.
  • the recesses 21 in the base of the leg 14 serve the first purpose: the mass of the rocker 7 thus becomes smaller and its inertia is reduced accordingly.
  • the comb-shaped teeth 22 of the free, left end of the leg 14, which is additionally angled upward with the lower part of the leg 14, serve to improve the reliability. Thanks to this shape of the rocker, an outgoing sliver of fiber remains "hooked" in the rocker 7, or in its teeth 22, with which the rocker 7 is safely "carried away” to tip over.
  • the surface 19 of the table 1 has an extension 23, against which the right leg 15 of the rocker 7 comes to a stop in the storage position B shown in a broken line and thus establishes the electrical contact.
  • 5 and 6 show a further variant of the parking device according to the invention, in which emphasis is placed on a maximum reaction speed of the parking.
  • a thickening 25 is attached between the tilt axis 24 and the two legs 14 and 15, in which a plurality, for example in the case in question three, chambers 26, in the form of, for example, bores, are let in.
  • steel balls 27 are contained, which can move freely along the entire hole.
  • Each chamber 26 is equipped with a closure cover 28.
  • the position of the chambers 26 with respect to the rocker 7 is now such that its axis h 1 in the working position A (shown in FIG. 5 with solid lines) of the rocker is inclined slightly to the right, while in the storage position B (shown in FIG. 5 with dashed lines) the axis h 2 of the chambers 26 to the left , namely at a larger angle to the horizontal.
  • the axis h of the chambers 26 thus passes the horizontal position in which the ball 27 contained in the chamber 26 is in an unstable state.
  • the ball 27 is of course representative of a body made of a relatively heavy material and perpendicular to the tilt axis 24 of the rocker 7, the function of which is to increase the tilting moment acting on the rocker 7 counterclockwise.
  • Another advantage of this solution besides the above-mentioned shortening of the reaction time, is that the contact pressure, i.e. the pressure on the contact point between the edge 30 and the extension 29 is increased, which improves the reliability of the parking device.
  • the electrical parking device described here in working position A is not touched by the material, the disadvantages of the prior art mentioned in the introduction, namely the risk of contamination of the device and the damage to the fiber sliver passing through, do not apply to its use.
  • This improves the reliability of the storage device, which, as with all monitoring devices, which rarely but have to function safely, can be questioned by contamination, and the quality of the fiber slivers produced, since the formation of dangerous "fiber snouts", which are periodically entrained by fiber sliver and can cause a gross error right into the finished product.
  • the electrical parking device claimed here is characterized by a very short reaction time, particularly in the last-described variant, which makes the subsequent attachment operation of the missing tape easier.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Knitting Machines (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (7)

1. Dispositif d'arrêt électrique pour une machine textile alimentée avec des rubans de fibres, principalement un banc d'étirage, avec une bascule par ruban de fibres alimentaire, pivotant entre une position de travail et une position d'arrêt de machine, dont le pivotement est provoqué par la terminaison du ruban de fibres, et qui appelle l'actionnement d'un contact d'arrêt électrique, caractérisé par le fait que la bascule (7) sous forme de table, qui possède deux jambes (14 et 15), est disposée d'une manière pivotable en dessous du ruban de fibres (2) en marche normale, sans contact avec celui-ci, et autour d'un axe de pivotement (8; 17; 24) horizontal et perpendiculaire au sens de déplacement du ruban de fibres, et que la répartition des masses dans la bascule (7) est choisie d'une telle manière que celle-ci, dans la position de travail (A), vient s'appuyer en auto-accrochage contre la butée (9), et que son pivotement dans la position d'arrêt de machine (B) est provoqué par dépassement de la force propre d'auto-acrochage, à l'aide d'une force extérieure, en passant une position de point mort.
2. Dispositif d'arrêt électrique selon revendication 1, caractérisé par le fait qu'au moins un corps, constitué d'une matière relativement lourde, est guidé dans la bascule (7), d'une manière mobile, perpendiculairement à l'axe (24) de la bascule, de façon à ce que, lors du passage du point mort, le corps se déplace par rapport à la bascule (7) et provoque une augmentation du moment de pivotement, exercé sur la bascule (7).
3. Dispositif d'arrêt électrique selon la revendication 2, caractérisé par le fait que le corps est une boule en acier (27) mobile dans une chambre oblongue (26).
4. Dispositif d'arrêt électrique selon revendication 2, caractérisé par le fait que la partie de la bascule (7), orientée dans le sens de déplacement du ruban de fibres (2), est formée avec des dents (22) sous forme de peigne. -
5. Dispositif d'arrêt électrique selon revendication 1, caractérisé par le fait que la bascule (7) est exécutée avec de faibles masses.
6. Dispositif d'arrêt électrique selon la revendication 1, caractérisé par le fait que la bascule (7) est constituée en métal léger.
7. Dispositif d'arrêr électrique selon revendication 1, caractérisé par le fait que l'axe de pivotement (17; 24) de la bascule (7) est fixé sur une table d'alimentation (1) sous isolation électrique (20), et que le contact d'arrêt est réalisé par le fait que la bascule (7), dans sa position d'arrêt (B), vient buter contre la table (1).
EP81102488A 1980-04-23 1981-04-02 Dispositif d'arrêt électrique pour une machine textile Expired EP0038449B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81102488T ATE14026T1 (de) 1980-04-23 1981-04-02 Elektrische abstellvorrichtung fuer eine textilmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH312780 1980-04-23
CH3127/80 1980-04-23

Publications (2)

Publication Number Publication Date
EP0038449A1 EP0038449A1 (fr) 1981-10-28
EP0038449B1 true EP0038449B1 (fr) 1985-06-26

Family

ID=4249192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102488A Expired EP0038449B1 (fr) 1980-04-23 1981-04-02 Dispositif d'arrêt électrique pour une machine textile

Country Status (7)

Country Link
US (1) US4412367A (fr)
EP (1) EP0038449B1 (fr)
JP (1) JPS5721524A (fr)
AT (1) ATE14026T1 (fr)
DE (1) DE3171103D1 (fr)
ES (1) ES8206679A1 (fr)
IN (1) IN153532B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT91964B (pt) * 1988-11-03 1995-09-12 Rieter Ag Maschf Mesa de entrada de uma estiradeira
EP0679599A3 (fr) * 1994-04-29 1996-10-30 Rieter Ag Maschf Dispositif de contrÔle pour ruban de fibres.
US7348507B1 (en) * 2006-12-15 2008-03-25 Goodrich Corporation Cable foul sensor
DE102008021218A1 (de) * 2008-04-28 2009-10-29 TRüTZSCHLER GMBH & CO. KG Überwachungseinrichtung für mindestens ein laufendes Faserband an einem Streckwerk einer Textilmaschine, Z.B. Strecke, Karde, Kämmmaschine o. dgl.
CN110485011B (zh) * 2019-09-30 2021-08-03 常州宏大智能装备产业发展研究院有限公司 环锭纺细纱机成纱卷绕机构运行状态在线监测方法

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7643A (en) * 1850-09-17 Improvement in the process of working gutta-percha
US1701127A (en) * 1928-03-09 1929-02-05 Walter J Scott Electric stop motion for drawing frames
US1722769A (en) * 1929-01-05 1929-07-30 Walter J Scott Stop motion for drawing frames
US1795799A (en) * 1929-11-30 1931-03-10 Walter J Scott Stop motion for drawing frames
US2007643A (en) * 1933-05-26 1935-07-09 William Casey Stop motion for fiber strand preparation machines
GB471945A (en) * 1936-04-20 1937-09-14 Mackie & Sons Ltd J Improvements in drawing frames
GB548923A (fr) * 1941-06-03 1942-10-29
GB732382A (en) * 1952-11-08 1955-06-22 Edgar Pearson Improvements in stop motion for textile machines
GB743612A (en) * 1954-09-27 1956-01-18 Electrical Products Colne Ltd Improvements in detector stop mechanism for textile machines
GB790849A (en) * 1954-10-19 1958-02-19 William Ewart & Son Ltd Improvements in or relating to textile drawing, roving or the like frames, and stop motion actuating mechanism therefor
FR1161954A (fr) * 1956-12-04 1958-09-08 Schlumberger Cie N Dispositif à contact électrique pour l'arrêt automatique de machines textiles en cas de casse de mèche
US2956392A (en) * 1958-03-04 1960-10-18 Ohnishi Hiromu Break detection apparatus
US3271823A (en) * 1963-11-29 1966-09-13 Ideal Ind Stop motion for textile fiber drafting machine
US3305896A (en) * 1964-04-27 1967-02-28 Ideal Ind Creel stop motion
US3345695A (en) * 1964-04-27 1967-10-10 Ideal Ind Double stop motion for a creel
US3310844A (en) * 1964-06-30 1967-03-28 Deering Milliken Res Corp Draw frame stop motion apparatus
FR1422292A (fr) * 1964-11-10 1965-12-24 Casse-mêche électrique perfectionné
JPS447873Y1 (fr) * 1965-07-06 1969-03-26
US4065831A (en) * 1976-06-15 1978-01-03 Huntsinger Arnold G Stop motion for drawing frames
US4095062A (en) * 1976-09-03 1978-06-13 Platt Saco Lowell Limited Stop-motion apparatus

Also Published As

Publication number Publication date
DE3171103D1 (en) 1985-08-01
ES502075A0 (es) 1982-08-16
ATE14026T1 (de) 1985-07-15
ES8206679A1 (es) 1982-08-16
IN153532B (fr) 1984-07-21
US4412367A (en) 1983-11-01
JPS5721524A (en) 1982-02-04
EP0038449A1 (fr) 1981-10-28

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