EP0212979B1 - Procédé et dispositif pour introduire consécutivement une mèche d'un nouveau pot de filature plein à un banc d'étirage dans un système de filature continue - Google Patents

Procédé et dispositif pour introduire consécutivement une mèche d'un nouveau pot de filature plein à un banc d'étirage dans un système de filature continue Download PDF

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Publication number
EP0212979B1
EP0212979B1 EP19860306499 EP86306499A EP0212979B1 EP 0212979 B1 EP0212979 B1 EP 0212979B1 EP 19860306499 EP19860306499 EP 19860306499 EP 86306499 A EP86306499 A EP 86306499A EP 0212979 B1 EP0212979 B1 EP 0212979B1
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EP
European Patent Office
Prior art keywords
sliver
drawing frame
fresh
nip rollers
roller
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
EP19860306499
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German (de)
English (en)
Other versions
EP0212979A3 (en
EP0212979A2 (fr
Inventor
Seigi Izutu
Hironori Yasuda
Yoshiharu Tomoto
Katumoto Yamamoto
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.)
Howa Machinery Ltd
Original Assignee
Howa Machinery Ltd
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 Howa Machinery Ltd filed Critical Howa Machinery Ltd
Publication of EP0212979A2 publication Critical patent/EP0212979A2/fr
Publication of EP0212979A3 publication Critical patent/EP0212979A3/en
Application granted granted Critical
Publication of EP0212979B1 publication Critical patent/EP0212979B1/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
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
    • D01H9/008—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving for cans
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/005—Arrangements for feeding or conveying the slivers to the drafting machine

Definitions

  • the present invention relates to a method and apparatus for sequentially feeding a fresh sliver in a can delivered to a feed roller means of a drawing frame.
  • a detector detects that a tail end of a sliver in a exhausting can drops down from the conveyor and arrives in the vicinity of the above suction nozzle, a signal is generated from the detector, whereby the front end of the fresh sliver held in the suction nozzle is cut, which front end is forwarded together with the tail end of the preceding sliver to a feed roller means of the second drawing frame.
  • a first drawing frame 1 of one head and one delivery type is arranged upstream of a second drawing frame 2 of the same type at a suitable distance therebetween.
  • an automatic can-exchanger 4 having an oval can path 3 is arranged between the two drawing frames 1 and 2, between the two drawing frames 1 and 2, an automatic can-exchanger 4 having an oval can path 3 is arranged.
  • the second drawing frame 2 is provided with an auto-leveler (not shown) for leveling a thickness unevenness of sliver of both short and long periods.
  • This type of auto-leveler is well-known in the art, such as disclosed in JP-B-6 012 447 and, therefore, the description thereof is eliminated in this specification.
  • a can 5 deposited at a delivery position A and now accommodating a sliver delivered from the first drawing frame 1, an empty can 6 deposited at a waiting position I for the next can exchange, and a full can 7 pushed out from the delivery position A to a push-out position B are arranged along a semi-circular path.
  • a predetermined number of supply cans 8 are deposited at supply positions C through G and at least one empty can 9 is disposed at a reserve position H prior to the waiting position I.
  • the number of the supply cans 8 at the supply positions C through G corresponds to a doubling number of slivers processed in the second drawing frame 2.
  • the amounts of sliver stored in the supply cans 8 initially differ from each other in such a manner that the last can 8 at the position C closest to the full can 7 is 100 % full of sliver and the top can 8 at the position G has the least amount of sliver while the middle cans 8 at the positions D through G have, in order, a gradually decreased amount of sliver so that a so-called "tapered operation" can be carried out, the content in the supply can 8 occupying the position G is exhausted one by one as the sliver processing in the second drawing frame 2 is continued, if the respective can 8 is forwarded to the succeeding position in the clockwise direction in Fig. 1 when one of the supply cans 8 is exhausted.
  • a plurality of can-exchanging arms 10 are provided in front of the can 5 at the delivery position A of the first drawing frame 1, each of which arms 10 is rotatable in the clockwise direction at a predetermined angle when the can 5 is full with sliver so as to push the empty can 6 at the waiting position I in to the delivery position A and push out the full can 5 to the push-out position B, which, in turn, causes the preceding full can 7 to displace from the push-out position B where search of a sliver end is carried out, as stated later, to the supply position C, as well as causes a newly generated empty can 9 to back toward the first drawing frame 1 to a reserve position H.
  • a positively driven roller-conveyor 11 is arranged in a region of the can path 3 near the supply position C. With cooperation of the roller-conveyor 11 and the can-exchanging arms 10, the supply can B is successively forwarded in the direction shown by an arrow at a time when the can 5 at the delivery position A has been full.
  • a turn-table 12 is arranged at the push-out position B of the preceding doffed full can 7, which is slowly rotatable in the arrowed direction in accordance with a signal indicating the completion of the doffing operation of the first drawing frame 1.
  • the search for a free end of a sliver dropping down from the periphery of the can 7 is carried out with the cooperation of a detecting means 50, such as a photoelectric tube, attached to a suction nozzle 17 of a suction arm 13 (see Fig. 3) while the can 7 is rotated by means of the turning table 12, whereby the sliver end is positioned at a predetermined suction position.
  • the suction arm 13 movable up and down is provided so as to face the front side of the full can 7, which position and withdraws the sliver from the can 7 while sucking the sliver end thereby.
  • the root portion of the suction nozzle 13 connected to a suction source (not shown) is related to a turning mechanism 15 and a swinging mechanism 16 mounted on a base 14.
  • the suction arm 13 is turnable at a predetermined angle substantially in the horizontal plane passing through an upper position thereof by means of the turning mechanism 15. Further, the suction arm 13 is swingable at a predetermined angle substantially in the vertical plane between the lower position corresponding to the suction position and the upper position. More specifically, as illustrated in Figs.
  • the turning mechanism 15 comprises a disc 101 rotatably mounted on a stand 22 and a motor 104 for driving the disc 101 through gears 102 and 103.
  • the swinging mechanism 16 comprises a shaft 106 rotatably held by a pair of supports 105, 105 and a motor 109 for driving the shaft 106 through gears 107 and 108, on which shaft 106 is fixedly secured the root of the suction arm 13.
  • a suction nozzle 17 is pivoted at the tip end of the suction nozzle 13 and rotatable axially by means of a motor 53.
  • a mouth of the suction nozzle 17 is covered with a wire mesh 52, on which the sliver end is held by suction and lifted to to a sliver-transferring position disposed above the supply position C.
  • a sliver nipping and supplying device 18 for receiving a fresh sliver 31 withdrawn from the full can 7 and supplying the same to the second drawing frame 2 is provided immediately upstream of a pair of feed rollers 20a, 20b and a screw guide 21, both of which are secured on a frame of a sliver conveyor 19 extending backward from the back side of the second drawing frame 2.
  • the sliver nipping and supplying device 18 is mounted on a stand 22 installed on a basement 14 in the central region of the can-exchanger 4. Inside of the upper portion of the stand 22, a swing arm 24 is pivoted and rotated back and forth, by a motor 23, at a predetermined angle in a vertical plane.
  • a nip roller 25 of a fixed position is rotatably secured at the upper end of the swing arm 24.
  • a friction roller 26 which, in turn, is engageable with another friction roller 27 fixedly mounted to an output shaft of a motor M1 when the swing arm 24 is in the sliver nip position shown in Fig. 2.
  • This nip roller 25 is mated with a displaceable nip roller 28 rotatably mounted at the end of a swing lever 29 pivoted on the swing arm 24 as stated before.
  • the swing lever 29 is made to reversibly rotate at a predetermined angle about a pivot thereof by a motor (not shown) connected thereto, whereby the displaceable nip roller 28 is engageable with and disengageable from the nip roller 25 of the fixed position.
  • a detector 30 such as a photoelectric tube is provided for detecting the front end of the sliver 31 lifted up from the full can 7 by the suction arm 13 on the stand 22 at a position above the nip roller 25 when the swing arm 24 occupies the sliver transferring position as shown in Fig. 2.
  • a V-shaped guide 32 is secured for smoothly guiding the sliver 31 during the reversing operation thereof to the can 7.
  • a receiving plate (not shown) for the sliver 31 which is released from the suction arm 13 may be provided between the V-shaped guide 32 and the suction arm 13. As illustrated in Fig.
  • a friction roller 33 is arranged immediately upstream of the pair of feed rollers 20a, 20b provided on the rear side of the second drawing frame 2 and is driven by the feed roller 20a through the conventional pulley and belt means.
  • the sliver 31 nipped by the pair of nip rollers 25 and 28 is forwarded by the normal rotation of the latter with the friction roller 26 coaxially fixed with the nip roller 25 being pressed onto the friction roller 33 when the nip roller 25 is moved to the sliver feeding position shown by an imaginary line in Fig. 2 according to rotation of the swing arm 24.
  • the screw guide 21 is connected to a motor M2 through the conventional pulley and belt means so that the screw guide 21 makes one rotation as the fresh sliver 31 is supplied between the feed rollers 20a, 20b, whereby the old slivers precedingly supplied to the feed roller 20a, 20b are transversely shifted by one pitch of the screw guide 21.
  • the first drawing frame 1 is made to stop. Thereafter, the can-exchanging arm 10 and the roller conveyor 11 start to rotate at substantially the same time, whereby the doffing operation of the full can 5 at the delivery position A and the donning operation of the empty can 6 at the waiting position I are carried out. Simultaneously therewith, the pushing-out operation of the preceding full can 7 from the push-out position B and the pushing-in operation of the empty can 9 from the reserve position H to the waiting position I are also completed. After the completion of can-exchanging, the searching operation for the sliver end is carried out on the as-doffed can 7 deposited on the turn table 12.
  • the turning mechanism 15 is operated so that the suction arm 13 waiting at a waiting position shown by a solid line in Fig. 1 turns counter-clockwise to an operating position shown by an imaginary line in Fig. 1. Then, the suction arm 13 is lowered down from an upper position to a lower position shown by an imaginary line in Fig. 2 by means of the swinging mechanism 16.
  • suction of the suction nozzle 17 is commenced.
  • the turn- table 12 When the suction arm 13 arrives at the lower position to operate a limit switch (not shown), the turn- table 12 is made to turn, which, in turn, rotates the full can 7 in the arrowed direction so that the front end of the sliver dropping down from the periphery of the can 7 is sucked and held on a wire mesh 52 covering a mouth of the suction nozzle 17.
  • the turn-table 12 Upon the detection of the sliver end by a detector 50 incorporated in the suction nozzle 17, the turn-table 12 is made to stop, and, simultaneously therewith, the swinging mechanism 16 is operated so that the suction arm 13 is displaced from the lower position to the upper position, whereby the sliver 31 is withdrawn from the full can 7.
  • the turning mechanism 15 is again operated to make the suction arm 13 rotate in the clockwise direction in Fig. 1 and retreat to the position of a solid line.
  • the sliver 31 lifted up from the can 7 can be introduced between the pair of nip rollers 25 and 28 of the sliver nipping and supplying device 18 waiting with both the rollers 25, 28 being separated from each other to form an opening therebetween, as shown in Fig. 2.
  • a detector 30 such as a photoelectric tube detects the sliver 31 introduced between the nip rollers 25 and 28, a signal is generated therefrom to start a motor (not shown) to displace the nip roller 28 in the clockwise direction as shown in Fig. 2, whereby the rollers 25 and 28 engage with each other and nip the sliver 31 therebetween.
  • suction transmitted to the suction nozzle 17 is interrupted, and the end portion of the sliver 31 lifted by the suction nozzle 17 is dropped down on the protector (not shown).
  • the motor M1 After releasing of the sliver end from the suction nozzle, the motor M1 is made to start to cause the reversing of the nip rollers 25, 28 through the friction rollers 27 and 26, whereby the sliver 31 is backed to the full can 7.
  • the motor M1 is made to stop immediately before the sliver end passes through the nip zone between the nip rollers 25, 28 by the action of the detector 30. According to this reversing of the nip rollers 25, 28, a length of the free end of the sliver 31 extending out from the nip zone of the nip rollers 25, 28 becomes very short.
  • the sliver nipping and supplying device 18 is maintained in the state with the nip rollers 25, 28 holding the sliver end until the next doffing of the first drawing frame 1 and the next can supply for the second drawing frame 2 are completed.
  • a signal is generated from a detector (not shown) for supplying a fresh sliver.
  • the motor 23 is made to start to cause the swing arm 24 together with the nip rollers 25, 28 to displace forward from above said nip position to a feed position. Because the length of the sliver end projected out from the nip rollers 25, 28 is very short, this portion of the sliver is kept straight without bending during the displacement.
  • the friction roller 26 coaxially fixed with the nip roller 25 is pressed onto the rotating friction roller 33, whereby the nip rollers 25, 28 are rotated in the normal direction so that the front end of the fresh sliver 31 held thereby is forwarded between the feed rollers 20a, 20b.
  • the screw guide 21 arranged upstream thereof is caused to make one rotation by means of the motor M2 so that the older slivers now being processed are transversely displaced by one pitch of the screw guide 21.
  • the sliver 31 is released from the nip zone between the nip rollers 25 and 28 through the backward swing motion of the swing lever 29 caused by the motor (not shown), because this motion of the lever 29 causes, in turn, the disengagement of the nip roller 28 from the nip roller 25.
  • the fresh sliver 31 is continuously supplied to a space of the screw guide 21 prepared by the transverse displacement of the older slivers.
  • the swing arm 24 together with the nip rollers 25 and 28 is made to reverse from the feed position to the nip position through the action of the motor 23 and maintained in the latter position while the nip rollers 25 and 28 are separated from each other until the next sliver supply is needed.
  • FIG. 8 another embodiment of the sliver nipping and feeding device 18 is illustrated, in which, instead of a pair of simple nip rollers 25 and 28 of the above embodiment, a pair of nip rollers with aprons 25A and 28A, such as a tensor bar type, are utilized. Because the nip zone of the aproned nip rollers 25A and 28A is longer than that of the former embodiment, the sliver end waiting in the nip position while held between the pair of rollers can be perfectly concealed within the nip zone of the aproned nip rollers 25A and 28A so as not to damage the sliver end.
  • a pair of nip rollers with aprons 25A and 28A such as a tensor bar type
  • the bending of the sliver end is avoidable during the displacement thereof from the nip position to the feed position, whereby the sliver end is smoothly supplied to the feed system of the second drawing frame, which, in turn, eliminates the thickness variance of the resultant sliver and the blockage of a trumpet provided on a coiler motion of the second drawing frame.

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

Claims (7)

1. Procédé pour approvisionner consécutivement une mèche nouvelle (31) d'un pot de filature (7) et l'amener vers des moyens (20a, 20b) formant rouleaux d'introduction dans un banc d'étirage (2), ce procédé comportant les opérations qui consistent à:
- rechercher une extrémité avant d'une mèche nouvelle;
- maintenir une première partie de l'extrémité avant d'une mèche nouvelle en la soulevant d'un pot de filature plein;
- pincer une seconde partie de l'extrémité de la mèche au moyen d'une paire de galets de pincement (25, 28; 25A, 28A), la seconde partie étant à l'aval de la première partie;
- faire tourner les galets de pincement (25, 28; 25A, 28A) dans un premier sens de façon à ramener la mèche en direction du pot de filature après avoir relâché la prise sur la mèche au droit de la première partie de manière à raccourcir une extrémité de la mèche qui dépasse de la zone de pincement des galets de pincement;
- déplacer les galets de pincement vers une position d'introduction de mèche; et
- faire tourner les galets de pincement (25, 28; 25A, 28A) dans le sens opposé de façon à faire avancer la mèche en direction du banc d'étirage (2), tout en dirigeant l'extrémité avant de la mèche vers des moyens (20a, 20b) formant rouleaux d'introduction dans ce banc d'étirage.
2. Procédé selon la revendication 1, dans lequel un auto-niveleur est employé pour égaliser les longueurs de recouvrement d'une mèche ancienne et de l'extrémité avant d'une mèche nouvelle.
3. Procédé selon la revendication 1 ou la revendication 2, dans lequel le pot de filature nouveau (7) est livré à partir d'un premier banc d'étirage (1) et le pot nouveau (7) est amené au moyen d'un échangeur de pots automatique (4) qui porte un pot de filature plein depuis une position de livraison du premier banc d'étirage (1) jusqu'au second banc d'étirage (2) et, cyclique- ment, ramène un pot de filature vide depuis une position d'alimentation du second banc d'étirage (2) jusqu'au premier banc d'étirage (1).
4. Dispositif destiné à amener consécutivement une mèche nouvelle (31) d'un pot de filature (7) vers des moyens (20a, 20b) formant rouleaux d'introduction dans un banc d'étirage (2), ce dispositif comportant:
- une table tournante (12) disposée dans un circuit destiné à transporter un pot de filature (7) jusqu'à la position d'alimentation du banc d'étirage (2);
- un ajutage d'aspiration (17) destiné à maintenir l'extrémité avant de la mèche nouvelle (31) tombant de la périphérie du pot de filature (7) et à déplacer cette extrémité jusqu'à une position de transfert de mèche;
- une paire de galets de pincement (25, 28; 25A, 28A) mobiles entre la position de transfert de mèche et une position d'approvisionnement de mèche située immédiatement en amont des moyens (20a, 20b) formant rouleaux d'introduction dans le banc d'étirage (2), l'un (28; 28A) des galets de pincement étant apte à s'éloigner et se rapprocher de l'autre pour pincer l'extrémité avant de la mèche nouvelle (31) avec la faculté de la libérer;
- des premiers moyens d'entraînement (Ml, 27, 26) destinés à faire tourner dans un premier sens les galets de pincement de manière à ramener la mèche en direction du pot de filature (7);
- des second moyens d'entraînement (33) destinés à faire tourner les galets de pincement dans l'autre sens pour faire avancer la mèche vers les moyens (20a, 20b) formant rouleaux d'introduction; et
- un moyen (30) pour détecter l'extrémité avant de la mèche (31).
5. Dispositif selon la revendication 4, dans lequel les galets de pincement comportent un premier galet (25; 25A) directement monté en rotation sur une extrémité d'un bras oscillant (24; 24A) articulé sur un support (22) et un second galet (28; 28A) monté sur une extrémité d'un levier oscillant (29; 29A) articulé sur le bras oscillant (24; 24A); le bras oscillant (24; 24A) étant susceptible de tourner de manière à permettre au premier galet (25; 25A) de se déplacer entre la position de transfert de mèche et la position d'approvisionnement de mèche, et le levier oscillant (29; 29A) étant susceptible de tourner par rapport au bras oscillant (24; 24A) de manière à permettre au second galet (28; 28A) de se déplacer entre une position en contact avec le premier galet (25; 25A) et une position libre de ce contact; et les premiers moyens d'entraînement (M1, 27, 26) destinés à faire tourner le premier galet (25; 25A) sont disposés sur le support (22) de manière telle que le premier galet (25; 25A) est entraîné lorsque ce dernier est dans la position de transfert de mèche.
6. Dispositif selon la revendication 5, dans lequel les premiers et les seconds moyens d'entraînement destinés à faire tourner les galets de pincement (25, 28; 25A, 28A) sont constitués par un moteur commun à deux sens de marche disposé sur le bras oscillant (24; 24A).
7. Dispositif selon l'une quelconque des revendications 4 à 6, comportant en outre un auto-niveleur destiné à égaliser les longueurs de chevauchement d'une mèche ancienne et de l'extrémité avant d'une mèche nouvelle.
EP19860306499 1985-08-26 1986-08-21 Procédé et dispositif pour introduire consécutivement une mèche d'un nouveau pot de filature plein à un banc d'étirage dans un système de filature continue Expired EP0212979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18796985A JPH0663144B2 (ja) 1985-08-26 1985-08-26 紡機におけるスライバ供給方法
JP187969/85 1985-08-26

Publications (3)

Publication Number Publication Date
EP0212979A2 EP0212979A2 (fr) 1987-03-04
EP0212979A3 EP0212979A3 (en) 1987-12-09
EP0212979B1 true EP0212979B1 (fr) 1989-10-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860306499 Expired EP0212979B1 (fr) 1985-08-26 1986-08-21 Procédé et dispositif pour introduire consécutivement une mèche d'un nouveau pot de filature plein à un banc d'étirage dans un système de filature continue

Country Status (3)

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EP (1) EP0212979B1 (fr)
JP (1) JPH0663144B2 (fr)
DE (1) DE3666595D1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3802414A1 (de) * 1988-01-28 1989-08-10 Fritz Stahlecker Spinnmaschine mit einer vielzahl von nebeneinander angeordneten spinnstellen
ES2032054T3 (es) * 1988-03-22 1993-01-01 S.P.A. Pettinatura Italiana Procedimiento y aparato para encontrar uno de los extremos de una banda o mecha de fibra textil y para acoplarlo con los elementos de alimenacion de una maquina textil.
JPH01278059A (ja) * 1988-04-28 1989-11-08 Nec Corp 半導体集積回路装置
EP0472962A1 (fr) * 1990-08-16 1992-03-04 Maschinenfabrik Rieter Ag Procédé et dispositif pour introduire une mèche dans un système d'etirage courant d'une machine textile, particulierement d'une metier a filer a anneaux
IT1241035B (it) * 1990-12-21 1993-12-27 Sant Andrea Novara Spa Impianto e procedimento per lo stiro di nastri di fibre tessili, lavorante in continuo.
US5586641A (en) * 1993-07-22 1996-12-24 Trutzschler Gmbh & Co. Kg Apparatus for feeding slivers to a drawing frame
DE4324540A1 (de) * 1993-07-22 1995-01-26 Truetzschler Gmbh & Co Kg Vorrichtung zum Zuleiten von Faserbändern zu einer Strecke in einer Spinnerei
IT1293613B1 (it) * 1996-08-22 1999-03-08 Truetzschler & Co Sistema di trasporto di vasi fra due stiratoi consecutivi nel ciclo di lavorazione
DE19722536A1 (de) * 1996-08-22 1998-02-26 Truetzschler Gmbh & Co Kg Kannenfördersystem zwischen zwei im Arbeitsgang aufeinanderfolgenden Strecken

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0069087B1 (fr) * 1981-06-19 1986-01-15 Officine Savio S.p.A. Procédé et dispositif pour charger un râtelier et pour interconnecter des machines de traitement de fibres

Also Published As

Publication number Publication date
EP0212979A3 (en) 1987-12-09
DE3666595D1 (en) 1989-11-30
EP0212979A2 (fr) 1987-03-04
JPS6245729A (ja) 1987-02-27
JPH0663144B2 (ja) 1994-08-17

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