EP0600827B1 - Procédé et bobinoir pour la fabrication automatique de bobines de fil sans noyau - Google Patents

Procédé et bobinoir pour la fabrication automatique de bobines de fil sans noyau Download PDF

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Publication number
EP0600827B1
EP0600827B1 EP93810757A EP93810757A EP0600827B1 EP 0600827 B1 EP0600827 B1 EP 0600827B1 EP 93810757 A EP93810757 A EP 93810757A EP 93810757 A EP93810757 A EP 93810757A EP 0600827 B1 EP0600827 B1 EP 0600827B1
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EP
European Patent Office
Prior art keywords
thread
reel
winding
winding mandrel
limiting plates
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 - Lifetime
Application number
EP93810757A
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German (de)
English (en)
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EP0600827A1 (fr
Inventor
Bruno Grabher
Heinrich Strasser
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.)
Casati Carlo AG
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Casati Carlo AG
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Filing date
Publication date
Application filed by Casati Carlo AG filed Critical Casati Carlo AG
Publication of EP0600827A1 publication Critical patent/EP0600827A1/fr
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Publication of EP0600827B1 publication Critical patent/EP0600827B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/10—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers
    • B65H54/18—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers for making packages of specified shapes or on specified types of bobbins, tubes, cores, or formers forming spools to be loaded into sewing, lace, embroidery, or like machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for the automatic production of coreless thread spools according to the preamble of claim 1.
  • the object of the invention is also a winding machine for the automatic production of coreless thread spools according to the preamble of claim 7.
  • the lower thread for creating a seam on a sewing machine is wound on a lower thread spool, which is located within a hook housing, which is looped once by the upper thread loop each time a stitch is formed.
  • the spatial expansion of the hook housing and the bobbin accommodated therein are consequently very narrow limits.
  • the lower thread is usually wound on a lower thread spool made of metal or plastic with side flanks.
  • the amount of thread that can be wound onto the core of such a bobbin is very limited.
  • Another disadvantage of the conventional lower thread bobbin is that the thread is pulled off the periphery of the bobbin and the mass of the bobbin pack and the mass of the bobbin must be accelerated at the beginning of each sewing process. This leads to thread tension changes and consequently to uneven seams.
  • the thread running from a supply to the full bobbin is deflected by a thread guide in such a way that the thread can be gripped and held by its crown-shaped front end when the winding mandrel is inserted. Then the thread running to the full bobbin is cut, the thread coming from the supply bobbin is fed back into the normal thread run with the thread guide, and the winding of the new bobbin is started.
  • the detection of the thread leading from the thread supply to the full bobbin with the tip of the winding mandrel requires that the thread run exactly intersects the axis of rotation of the winding mandrel. This is only possible with the help of a thread guide and a means for holding the full bobbin.
  • the position of the thread leading to the removed full bobbin can only be determined with difficulty with difficulty, because on the one hand the position of the removed bobbin is not absolutely precisely defined and above all because the thread running away from the full bobbin leaves the bobbin surface at some point. So there is a very large area through which the thread can run. This contrasts with the very small toothed end face of the winding mandrel, the diameter of which should be kept as small as possible in order to make the package on the spool as large as possible.
  • the thread loop formed over the front end of the winding mandrel is pressed by the winding mandrel into a hole in a side delimitation plate, as a result of which the thread can be injured or even tear when inserted, thereby causing a grasping of the result very short thread start is difficult.
  • the object of the present invention is to develop the method and the device for the production of coreless thread bobbins in such a way that a substantially larger amount of bobbin thread can be wound up in the same space as that produced in a known manner.
  • thread bobbins can be produced in a simple and inexpensive manner, which can take up substantially higher thread quantities within the conventional dimensions.
  • feeler and pressure roller With the feeler and pressure roller, a very high density of the entire package can be achieved and at the same time a regular thread pressure across the entire width of the package.
  • the volume of flat bobbins or their specific thread supply can be increased by a further 10 to 20% by subsequent axial pressing, preferably with the supply of heat.
  • the bobbin With the winder according to the invention, the bobbin can be constructed almost without a core hole, so that essentially the entire volume, given by the diameter and the width of the bobbin, is filled with thread. Thanks to the moving bobbin delimitation plates, the thread can be wound onto a winding mandrel at very high speed and at the same time pressed on with high pressure by the pressure and feeler roller.
  • the laying device according to the invention enables even laying of the thread over the entire axial length and also prevents the formation of image windings.
  • a vertically arranged support 5 is placed on the foundation or machine frame 1 of the winding machine 3, in which a first bobbin limiting plate 9 is freely rotatably mounted in a ball bearing 7.
  • a with its end face 10 facing the first second coil limit shield 11 is freely rotatably mounted in a bearing block 13.
  • the bearing block 13 is fastened in a displaceable and fixable manner on two guide rails 15 which run at right angles to the end face 10 and which are in turn axially displaceably mounted in a longitudinal guide block 17.
  • the rear ends 19 of the guide rails 15 are connected to a piston 21 of a linear drive 23.
  • the front ends 24 of the guide rails 15 are supported in guide bores 26 in the support 5.
  • central bores 25 and 27 lying coaxially to one another are embedded, which serve to insert one in a mandrel bearing 29 rotatably mounted winding mandrel 31 with little radial play.
  • the winding mandrel 31 can be driven by a winding motor 33.
  • the winding motor 33 with the winding mandrel 31 attached to it is axially displaceable on a longitudinal guide 35.
  • the axial displacement length of the winding mandrel 31 is dimensioned such that the winding mandrel end 37 can be retracted so far into the coil delimitation plate 9 without projecting beyond the plane of the surfaces 39 of the support 5 and of the coil delimitation plate 9.
  • the distance a of the bearing block 13 or the surface 10 of the coil limitation plate 11 to the surface 39 of the coil limitation plate 9 can be set in and fixed by means of locking screws 41.
  • the distance a determines the axial length of the coil to be generated.
  • a feeler and pressure roller 45 which is fastened to a pressure arm 47 and can be pivoted about a pivot point C, can be pivoted in and out of the winding area 43 formed by the two coil delimitation plates 9 and 11.
  • the pressure roller 45 is intended to press the thread 48 running from a feed spool 46 of the machine 3 onto the winding mandrel 31.
  • the pressing force which is kept as constant as possible during the formation of a coil pack 49, is produced by a pressing means 51.
  • the pressing means 51 can be, for example, a pneumatic piston-cylinder unit which acts on the two-armed pressing arm 47.
  • a collecting tray 53 Arranged below the winding area 43 is a collecting tray 53 which serves to release the full bobbin released by the winding mandrel 31 at the end of the winding process (Coil pack) 49.
  • a handling element can of course also occur, which detects the spool 49 and leads it out of the machine 3 (not shown).
  • a laying device 61 is arranged on the foundation 1 behind the winding area 43.
  • the laying device 61 has a laying finger 63 protruding into the winding area 43, which is pivotably mounted on a hub 75 about a vertical axis B and is oscillated by an eccentric drive 65 through a drive arm 67 between the two surfaces of the bobbin delimitation plates 9 and 11 or in FIG surfaces 39 of the support 5 or of the bearing block 13 lying on the same plane is moved back and forth (cf. FIGS. 2 and 3).
  • the laying finger 63 has at its front end an eyelet 68 through which the thread 48 fed from the supply spool is guided to the winding mandrel 31.
  • the laying device 61 is driven by an electric motor 69, on the output shaft 71 of which the eccentrically mounted drive arm 67 is seated and drives the laying finger 63 via a lever arm 73.
  • the stroke of the drive arm 67 - generated by the eccentricity of the bearing pin 74 - is constant.
  • the drive arm 67 which engages at the rear end of the lever arm 73, can be displaced parallel to the mandrel axis 31.
  • the stroke of the eyelet 68 above the winding mandrel 31 can thus be changed with a constant stroke of the drive arm 67.
  • a slot-shaped recess 77 is made in the lever arm 73 in the end of the lever arm 73, in which a connecting means 72 can engage between the drive arm 67 and the lever arm 73.
  • the hub 75 carrying the axis of rotation B could also be designed to be displaceable in order to change the lever ratio of the laying finger 71 and the lever arm 73.
  • the slot-shaped recess 77 for the articulation point (connecting means 72) of the laying finger 63 is designed to run at right angles to the winding mandrel 31. In this way, the maximum deflection point of the eyelet 68 on the side of the non-displaceably arranged limiting plate 9 is always in the same place, regardless of whether a small or a large stroke of the eyelet 68 is set and regardless of whether the drive arm 67 is at the rear in the slot 77 engages (small stroke) or front (large stroke).
  • the drive arm 67 has at its rear end a bearing shell 66 which is seated on an eccentrically mounted journal 70. To adjust the laying finger 63, the drive arm 67 is displaced in the axial direction relative to the output shaft 71 of the motor 69. The drive arm 67 is displaced in a groove 76, together with the drive motor 69.
  • a thread gripper 81 is arranged on the guide block 17 in the axis of rotation F of the winding mandrel 31 in order to grasp the spool 49 that is already from the supply or supply spool 46 to a full spool 49 lying in the collecting tray 53.
  • the thread gripper 81 has a guide part 83, which can be arranged in the guide block 17, a guide tube 85 mounted in the guide part 83 and a two-armed gripper head 87 which can be displaced in the guide tube 85.
  • the gripper head 87 is displaceably mounted together with the guide tube 85 with a pneumatic linear drive 89 and, from the rest state lying outside the bore 27 in the bearing block 13, can pass through the bore 27 into the winding area 43 in a working and catching position.
  • the gripper head 87 While the gripper head 87 is being guided through the bore 27, its two pliers 88 are pulled together by a further means, not shown, to such an extent that they do not lie against the wall of the bore 27. As soon as the gripper head 87 reaches the winding area 43, the two pliers 88 open and encompass the thread 48 running in this area from the feed spool to the full bobbin 49. The two pliers 88 can be closed with a drive means, not shown, and by pulling the guide tube 85 back the thread 48, held in the hook head 87, pulled as a loop 50 through the bore 27 and then released by the hook head 87. An electromagnet can also be used as the drive means for the tongs 88 on the gripper head 87.
  • the method for producing flat coils 49 is explained in more detail below.
  • the winding mandrel 31 rotates at high speed, and the thread 48 fed from the feed bobbin is guided by the eyelet 68 on the laying finger 63, over the bobbin width, given by the distance a between the two bobbin delimitation plates 9, 11, oscillates, that is, back and forth brought forth.
  • the stroke of the laying finger 63 in the area of the eyelet 68 is dimensioned somewhat larger than the distance a between the two coil delimitation plates 9 and 11, so that the front end of the laying finger 63 strikes the coil delimitation plates 9 and 11 or the adjacent surfaces.
  • both the drive motor 33 for the winding mandrel 31 and the drive motor 69 of the laying device 61 are stopped , the bearing block 13 with the bobbin limiting plate 11 stored therein is withdrawn by a few millimeters, so that the bobbin pack 49 is no longer held clamped in the winding area 43.
  • the winding mandrel 31 is pulled out of the winding area 43, so that the bobbin 49 either falls into the collecting tray 53 by its own weight or can be removed by a handling device.
  • the thread 48 leading from the feed bobbin to the full bobbin 49 still traverses the winding area 43 at this point in time Free bore 27 in the bobbin delimitation plate 11 of the thread gripper 81 into the winding area 43 and there the thread 48 is gripped with the gripper tongs 88.
  • the thread gripper 81 is pulled back through the bore 27, the thread loop 50 is formed in the thread 48 and extends to the rear of the bearing block 13. Now the thread loop 50 can be released by the two pliers 88 of the thread gripper 81.
  • the winding mandrel 31 is again pushed through the winding region 43 into the bore 27 in the bobbin delimitation plate 11 and the thread loop 50 lying in the bore 27 is held in place.
  • the thread still leading to the full bobbin is cut by a knife 80, which is only shown schematically.
  • the winding process can now begin again by starting the winding motor 33 and the drive motor 69 for the laying device.
  • the bearing block 13 with the bobbin limiting plate 11 must of course be pushed back into the winding position with which the width a of the bobbin is determined.
  • the winding ratio (spool speed: number of strokes) can be electronically adapted to the requirements by a speed control for the two drive motors 33 and 69.
  • the stroke of the laying finger 63 can also be adjusted by moving the eccentric drive arm 67.
  • the pressing device 91 consists essentially of a die plate 93 with a heatable surface 95 and a hydraulically actuated punch 97 which is mounted in an axially displaceable manner in a cylinder 99.
  • the invention proposes to use the piston rod 103 of a piston 101 as a compression piston in a further hydraulic cylinder 105 and thus to obtain a power transmission to the required extent.
  • the compression of the bobbins 49 can therefore be maintained because either the threads 48 lying one above the other are slightly glued by the finishing agent or, in the case of synthetic fibers, the pressed shape is maintained by the heating and softening of the threads 48.
  • the pressing device 91 can be attached directly to the winding machine or set up as a separate device.

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  • Manufacture Of Motors, Generators (AREA)
  • Winding Filamentary Materials (AREA)

Claims (12)

  1. Procédé d'élaboration automatique de bobines de fil sans noyau, comportant des surfaces frontales pratiquement planes, sur un mandrin de bobinage d'une bobineuse qui comporte deux flasques limites de bobine qui, suivant la direction axiale, sont situés à une certaine distance l'un de l'autre et agencés de façon à pouvoir être déplacés en translation, caractérisé en ce que :
    - le fil (48) qui passe d'une bobine de présentation (46) à une bobine pleine (49) terminée et dégagée du mandrin de bobinage (31) est saisi par des pinces (88) disposées d'une manière mobile sur un organe d'accrochage de fil (81), situé en dehors des flasques limites de bobine pendant l'opération de bobinage, et est tiré par ces pinces (88), sous la forme d'une boucle (50) prélevée sur le passage du fil, dans un perçage (27) ménagé dans le flasque limite de bobine (11),
    - le mandrin de bobinage (31) est déplacé d'une manière guidée, suivant la direction axiale et à la suite de l'organe d'accrochage de fil (81), à travers les deux flasques limites de bobine (9, 11),
    - la boucle de fil (50) est maintenue sur le flasque limite de bobine (11) par le mandrin de bobinage (31),
    - le brin de la boucle de fil qui se dirige vers la bobine pleine (49) déjà dégagée du mandrin de bobinage (31) est coupé,
    - le mandrin de bobinage (31) est entraîné en rotation,
    - le fil (48) est enroulé sur le mandrin de bobinage (31) et est guidé dans un sens et dans l'autre entre les deux flasques limites de bobine (9, 11) au moyen d'un dispositif de pose à mouvement alternatif (61),
    - le mandrin de bobinage (31) est mis à l'arrêt une fois atteinte une quantité de fil pouvant être fixée à l'avance,
    - la distance (a) entre les flasques limites de bobine (9, 11) est augmentée,
    - le mandrin de bobinage (31) est extrait, suivant la direction axiale, de la zone de bobinage (43) située entre les flasques limites de bobine (9, 11) et la bobine (49) est libérée.
  2. Procédé selon la revendication 1, caractérisé en ce que le fil (48) est tiré vers l'extérieur, par le perçage (27) ménagé dans le flasque limite de bobine (11), au moyen des pinces (88) disposées d'une manière mobile sur l'organe d'accrochage de fil (81).
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que le fil (48) provenant de la bobine de présentation (46) est appliqué avec une force réglable au moyen d'un galet de palpage (45) agencé de façon à pouvoir être appliqué sous pression vers l'axe (A) du mandrin de bobinage (31).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que les deux flasques limites de bobine (9, 11) sont montés libres en rotation et sont entraînés par la bobine de fil (49) qui se forme sur le mandrin de bobinage (31).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'oeillet passe-fil (68) situé à l'extrémité avant du dispositif de pose à mouvement alternatif (61) est guidé dans un sens et dans l'autre entre les deux flasques limites de bobine (9, 11) et vient au moins en butée, lors du changement de sens, sur l'un des deux flasques limites de bobine (9, 11) ou sur la surface de paroi (39) voisine.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que la course du doigt de pose à mouvement alternatif (63) du dispositif de pose à mouvement alternatif (61) est réglable au moyen d'un déplacement des moyens de commande de course (69).
  7. Bobineuse permettant l'élaboration automatique de bobines de fil sans noyau, comprenant un mandrin de bobinage (31), servant à recevoir temporairement le fil (48) pendant l'opération de bobinage, un dispositif de pose à mouvement alternatif (61), deux flasques limites de bobine (9, 11), montés à une distance (a) réglable l'un vis-à-vis de l'autre, des perçages (25, 27), qui sont ménagés dans l'axe de rotation (A) de ces flasques limites de bobine et par lesquels le mandrin de bobinage (31) peut être guidé de façon à pouvoir être déplacé en translation axiale, des premiers moyens d'entraînement servant au déplacement axial du mandrin de bobinage (31), des seconds moyens d'entraînement (33) servant à entraîner le mandrin de bobinage (31), des moyens agencés de façon à pouvoir être introduits dans le passage de fil, ces moyens servant à saisir le fil (48) et à former une boucle de fil (50) avec le fil (48) qui passe entre les flasques limites de bobine (9, 11) en provenance d'une bobine de présentation, et des moyens de serrage de la boucle de fil (50), caractérisée par un organe d'accrochage de fil (81) agencé de façon à pouvoir traverser le flasque limite de bobine (11) suivant la direction axiale et de façon à pouvoir être actionné de l'extérieur.
  8. Bobineuse selon la revendication 7, caractérisée en ce que l'organe d'accrochage de fil (81) est agencé de façon à pouvoir être introduit suivant la direction axiale dans le passage de fil en passant dans le perçage (27) ménagé dans le premier flasque limite de bobine (11) et en ce qu'à son extrémité avant, il est disposé au moins une pince (88) servant à saisir et maintenir le fil (48) et à tirer ce fil dans le perçage (27).
  9. Bobineuse selon la revendication 7, caractérisée en ce que les moyens de serrage de la boucle de fil (50) sont formés de l'extrémité avant (37) du mandrin de bobinage (31) et de la paroi du perçage (27) ménagé dans le premier flasque limite de bobine (11).
  10. Bobineuse selon l'une des revendications 7 à 9, caractérisée en ce que le dispositif de pose à mouvement alternatif (61) comprend un doigt de pose à mouvement alternatif (63) qui oscille entre les plans formés par les deux flasques limites de bobine (9, 11) dans la zone de bobinage (43) et vient en butée sur au moins l'un des flasques limites de bobine (9, 11) ou l'une des parois adjacentes et dont la course peut être adaptée à la distance (a) réglable des flasques limites de bobine (9, 11) et/ou à la largeur de bobine (a).
  11. Bobineuse selon la revendication 10, caractérisée en ce que le doigt de pose à mouvement alternatif (63) est agencé de façon à pouvoir pivoter autour d'un axe (B) situé d'une manière parallèle entre les deux flasques limites de bobine (9, 11) et en ce que la course de ce doigt peut être réglée, et adaptée à la largeur (a) de la bobine (49) à élaborer, au moyen d'un allongement ou d'un raccourcissement du doigt de pose à mouvement alternatif (63) et/ou d'un bras de levier (73) relié à ce doigt de pose à mouvement alternatif (63).
  12. Bobineuse selon l'une des revendications 7 à 11, caractérisée en ce que le fil (48) peut être appliqué sous pression sur le mandrin de bobinage (31) au moyen d'un galet (45) de palpage et d'application sous pression agencé de façon à pouvoir pivoter vers l'intérieur entre les flasques limites de bobine (9, 11) et/ou en ce que le diamètre de la bobine peut être détecté par palpage.
EP93810757A 1992-12-03 1993-10-29 Procédé et bobinoir pour la fabrication automatique de bobines de fil sans noyau Expired - Lifetime EP0600827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3716/92 1992-12-03
CH371692 1992-12-03

Publications (2)

Publication Number Publication Date
EP0600827A1 EP0600827A1 (fr) 1994-06-08
EP0600827B1 true EP0600827B1 (fr) 1995-05-10

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EP93810757A Expired - Lifetime EP0600827B1 (fr) 1992-12-03 1993-10-29 Procédé et bobinoir pour la fabrication automatique de bobines de fil sans noyau

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US (1) US5501409A (fr)
EP (1) EP0600827B1 (fr)
DE (1) DE59300186D1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE287111C (fr) *
US1688058A (en) * 1925-12-19 1928-10-16 United Shoe Machinery Corp Cop-winding machine
US1598262A (en) * 1925-12-24 1926-08-31 United Shoe Machinery Corp Cop-winding machine
US2420936A (en) * 1944-12-06 1947-05-20 Floyd E Davis Flying coiler
US2780191A (en) * 1953-05-04 1957-02-05 Joel M Philips Sewing machine bobbins of either silk, cotton, nylon or other fibres or synthetic material, and methods of making the same
US2889120A (en) * 1955-02-01 1959-06-02 United Shoe Machinery Corp Bobbin winding machine
US2815178A (en) * 1955-04-20 1957-12-03 Threads Inc Thread package winding apparatus
FR1222060A (fr) * 1959-03-23 1960-06-08 G Decombe Ets Dispositif pour l'évacuation d'une couronne de fil métallique, électrique ou textile enroulé sur une bobine de formation
NL6903137A (fr) * 1968-03-02 1969-09-04
CH668445A5 (de) * 1985-02-07 1988-12-30 Gegauf Fritz Ag Spulvorrichtung fuer naehmaschine.
DE3716473A1 (de) * 1987-05-16 1988-11-24 Schlafhorst & Co W Verfahren zum sortieren von kreuzspulen an einem spulautomaten

Also Published As

Publication number Publication date
US5501409A (en) 1996-03-26
DE59300186D1 (de) 1995-06-14
EP0600827A1 (fr) 1994-06-08

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