EP0438439B1 - Dispositif de stockage et de livraison du fil - Google Patents

Dispositif de stockage et de livraison du fil Download PDF

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Publication number
EP0438439B1
EP0438439B1 EP89911057A EP89911057A EP0438439B1 EP 0438439 B1 EP0438439 B1 EP 0438439B1 EP 89911057 A EP89911057 A EP 89911057A EP 89911057 A EP89911057 A EP 89911057A EP 0438439 B1 EP0438439 B1 EP 0438439B1
Authority
EP
European Patent Office
Prior art keywords
thread
stop element
storage
delivery apparatus
axial
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
EP89911057A
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German (de)
English (en)
Other versions
EP0438439A1 (fr
Inventor
Pär JOSEFSSON
Joachim Fritzson
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.)
Iro AB
Original Assignee
Iro AB
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Filing date
Publication date
Application filed by Iro AB filed Critical Iro AB
Priority to AT89911057T priority Critical patent/ATE100876T1/de
Publication of EP0438439A1 publication Critical patent/EP0438439A1/fr
Application granted granted Critical
Publication of EP0438439B1 publication Critical patent/EP0438439B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D03D47/363—Construction or control of the yarn retaining devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft

Definitions

  • the invention relates to a thread storage and delivery device of the type specified in the preamble of claim 1.
  • the stop element is arranged with a relatively large axial distance from the last turn of the thread supply near the head end of the storage member.
  • the position of the stop element is chosen in view of the fact that all conceivable thread qualities are to be processed with the thread storage and delivery device, and that with essentially the same length in the thread supply for all thread qualities, even with the coarsest thread, there is still a considerable axial distance between the last turn in the thread supply and the stop element and there is a relatively large angle between the last turn in the thread supply and the section of the thread running from the last thread turn to the stop element.
  • the free end of the thread migrates out of the main nozzle.
  • the cutting device which is assigned to the main nozzle and is intended for all threads and is actuated periodically for the color being processed, cuts off this increase in length.
  • the resulting pieces of thread disrupt in an uncontrollable manner not only in this critical work area, but even get into the fabric, whose quality suffers.
  • the invention has for its object to provide a thread storage and delivery device of the type mentioned, with the malfunctions in thread insertion and quality losses in the finished fabric due to uncontrollable pieces of thread are avoided.
  • the axial distance between the stop element and the last turn of the thread supply can be set so that the oscillating tensile force in the thread is no longer able in the resting phase to detect the last thread turn and if necessary also wind up further thread turns.
  • the effective in the section of the thread between the last turn and the stop element in the axial direction Force component from the tensile force in the thread is no longer sufficient to shift the thread during the resting phase.
  • the embodiment according to claim 2 is useful.
  • the stop element By adjusting the stop element in the axial direction of the storage member, it is possible to limit the maximum permissible value of the angle at which it is ensured that the free end of the thread no longer travels into the cutting device despite the standby pull.
  • the maximum value just allowed means that a collision between the last turn in the thread supply and the Stop element is omitted when working if, after building up the thread supply from the dynamics of the device, the thread supply should execute a trailing movement in the direction of the stop element. There is thus a safety distance between the thread supply and the stop element, which excludes the collision between the thread supply and the stop element, but which is only so large that the free thread end does not migrate out of the main nozzle.
  • the embodiment according to claim 3 is also expedient because, in this dimensioning of the distance, the aforementioned requirements are met in a practical manner.
  • guide values dependent on the thread quality can be determined empirically and specified for the respective setting.
  • a further, expedient embodiment in which the stop element engages in a depression in the storage area of the storage member in the stop position is possible from claim 7. This configuration ensures that the stop element, regardless of its set axial position, penetrates properly into the storage area and reliably intercepts the thread.
  • the safety distance between the last turn and the stop element is predetermined from the start. If the maximum sensor is adjusted to adapt to the respective thread quality, the stop element follows this adjustment movement so that the maximum bar angle of the section of the thread to the stop element or the barely permissible maximum value of the distance between the stop element and the last turn is maintained .
  • the embodiment according to claim 9 is advantageous because, despite the joint adjustability of the maximum sensor and stop element, their relative axial distance can then be readjusted. Because with a small diameter, smooth thread, the safety distance between the last turn and the stop element can be dimensioned smaller than with a large diameter, fluffy thread. The watch can then be adjusted by axially displacing the stop element in relation to the maximum sensor.
  • thread storage and delivery device 1 'of a known type shows a thread storage and delivery device 1 'of a known type, with secondary components being omitted for understanding the function.
  • Such thread storage and delivery devices 1 ' are frequently used for multi-color weaving on jet looms W in order to provide the jet loom W with precisely sized weft thread sections which are drawn off as a continuous thread F from a supply spool (not shown).
  • Each weft thread section is dimensioned by means of a device, not shown, which is integrated into the thread storage and delivery device 1 ' either in the case of a drum-shaped storage element 2 adjustable in outer diameter, a single stop element 13 interrupting the thread take-off when the predetermined thread length is reached, or in the case of a storage element which is not adjustable in outer diameter, has a plurality of stop elements 13 distributed at regular intervals around its circumference for interrupting the thread take-off at a selected stop element 13 .
  • this principle is known, so it is no longer necessary to deal with it here.
  • the thread storage and delivery device 1 has in addition to, e.g. non-rotatably fixed, storage member 2, the axis of which is designated 3 and which defines a storage area 4, a winding element 5 which can be driven to rotate by means of a drive motor 6.
  • the winding element 5 is hollow, so that the thread F coming from the bobbin from the inside along the Axis 3 and directed radially outwards and wound there in successive turns 11 in a thread supply S on the storage surface 4.
  • the drive motor 6 is connected to a control device 7, which in turn is connected via a control line 10 to a maximum and a minimum sensor 8, 9.
  • the minimum sensor 9 can optionally also be omitted.
  • the two sensors 8, 9 are responsible for switching the drive motor 6 on and off, such that when the thread supply S falls below a certain size, the drive motor 6 is switched on until the Maximun sensor 8 detects the required size of the thread supply S and the drive motor 6 switches off again.
  • the individual turns 11 lie side by side.
  • the last turn 11 ' is this Stop element 13 facing, which has a relatively large axial distance A to the thread supply S.
  • the stop element 13 can be moved back and forth between a passive position in which the thread F can be drawn off unhindered and with a circumferential movement around the storage surface 4 and its head end, and a stop position (FIGS. 1 and 2) in which the thread counteracts the circumferential withdrawal movement is prevented and deflected around the stop element 13.
  • a stop position in which the thread counteracts the circumferential withdrawal movement is prevented and deflected around the stop element 13.
  • the thread F On its way to the weaving machine W, the thread F is then deflected back to the axis 3 via the head end of the storage member 2 before it runs through a thread eyelet 14 and from there into a channel 15a of a main nozzle 15 of the weaving machine W.
  • the main nozzle 15 which is connected to a pressure medium supply, is attached to the reed (not shown) at the entrance to the compartment in such a way that it is moved in an oscillating manner with the reed as it moves back and forth (double arrow 17).
  • the main nozzle 15 contains many channels corresponding to the number of colors processed; in the present case, the channel 15a for the thread F and a channel 15b for a second thread F '', which is currently being processed and comes from a thread eyelet 16.
  • the loom W is assigned a number of thread storage and delivery devices 1 'corresponding to the number of colors in multi-color weaving.
  • the thread storage and delivery device 1 'with the color that has not just been processed (thread F) is in a resting phase (FIGS. 1 and 2).
  • the channel 15a is acted upon by a pressure medium flow, which acts on the thread F with a permanent holding pulling force P in the direction of the compartment and keeps it stretched.
  • the free end F 'of the thread F projects over the main nozzle 15 into the area of all processed threads common cutting device 18, which is actuated periodically during the movement of the reed, for example for cutting the thread F ''.
  • the free end F 'of the thread F projects with a length L beyond the main nozzle 15.
  • Fig. 1 shows the beginning of the rest phase of the device 1 '.
  • the other thread F '' is just being inserted.
  • the section 12 of the thread F forms an angle ⁇ with the last winding 11 ′ which is immediately adjacent to the windings 11 in the thread supply S.
  • the standby tensile force P is permanently effective.
  • the stop element 13 is adjustable in the direction of a double arrow 19 in the axial direction of the storage element 2 towards the thread supply S until the axial distance between the stop element 13 and the last turn 11 'has a maximum value A max , at which it is ensured that the angle between the last turn 11' and the section 12 of the thread F only reaches a maximum value ⁇ max at which the axial component from the standby tensile force P is no longer sufficient to wind up the last turn 11 'in the manner described above.
  • the values A max , ⁇ max are dimensioned so large that a collision between the last turn 11 ′ and the stop element 13 is excluded when the thread storage and delivery device 1 is working.
  • the axial position of the last turn 11 ′ is determined depending on the thread quality and the thread length required in the thread supply S, for example by setting the maximum sensor 8.
  • the stop element 13 is then axially adjusted in the direction of the double arrow 19 until the axial distance has the maximum still permissible value A max which reliably prevents the opening of the last turn 11 '.
  • the thread storage and delivery device can then be put into operation.
  • the thread storage and delivery device 1 according to FIG. 3 has the components shown in FIG. 1 and works in the same way with the weaving machine shown in FIG. 1. If the diameter of the storage surface 4 of the storage member 2 is adjustable, a single stop element 13 is sufficient to measure the exact length of the thread section. If, however, the diameter of the storage surface 4 of the storage member 2 is not adjustable in the thread storage and delivery device 1, a plurality of stop elements 13 spaced apart in the circumferential direction are provided, which are expediently combined in an annular body which can be adjusted in the direction of the double arrow 19.
  • the stop element 13 is accommodated in a housing 20 with drive elements, for example a magnet coil and a magnet armature.
  • the housing 20 is housed at a radial distance from the storage surface 4 of the drum-shaped storage member 2 in a stationary housing 21, in one of several sockets 24, of which corresponding bores 23 allow the stop element 13 to exit.
  • the stop element 13 is in its stop position in FIG. 4, in which it enters through a radial gap 27 between the storage surface 4 and the underside of the housing 21 into a recess 25 in the storage member 2.
  • the thread is intercepted from the thread supply S on the stop element 13.
  • the thread supply S is at a distance from the stop element 13 with the maximum value A max according to FIG. 3.
  • the thread supply S there is a thread with a very small diameter, so that the last turn 11 'lies at a considerable axial distance from the right end of the storage area 4.
  • the storage member 2 is provided with a plurality of axially aligned and spaced-apart depressions 25, so that after the housing 20 has been moved into one of the other sockets 24, the stop element 13 again finds a depression 25.
  • the stop element 13 can be adjusted in three stages. However, it is also conceivable to adjust the housing 20 continuously in the housing 21. Then, instead of the three depressions 25, an axial groove 26 which is open toward the storage surface 4 is expedient.
  • the housing 21 is fixed in a holder 22.
  • the maximum sensor 8 indicated in FIG. 3 could be structurally combined with the housing 20 in the housing 21 (FIGS. 4, 5), so that when the maximum sensor 8 is adjusted when changing to a different thread quality, the stop element 13 is also adjusted accordingly .
  • the value A max of the distance between the stop element and the last thread turn 11 or the maximum sensor 8 can then be set in advance. In view of the fact that at different If thread quality the value A max is to be varied, it is then expedient to additionally provide a relative axial adjustability of the stop element 13 to the maximum sensor 8.
  • a stepped or a stepless adjustment of the stop element in the axial direction is shown.
  • the housing 20 could be held displaceably in an axial guide and be adjustable by means of a screw spindle. It would also be conceivable to adjust the housing 20 or the stop element 13 sensitively by means of an eccentric. Corresponding scales, which are visible from the outside, show an exact check of the respective setting.
  • a further possibility for adjusting the stop element 13 consists in attaching the stop element 13 inserted in the form of a pin to a stop element carrier which is longer in the axial direction and which moves with the stop element 13 between its stop position and passive position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

Un dispositif de stockage et de livraison du fil pour machines textiles, notamment pour le fil de trame dans un métier à tisser automatique en plusieurs couleurs, comprend un moyen de délimitation de la longueur du fil tiré en sections mesurées, un élément de stockage en forme de tambour pour une réserve de fil enroulé de laquelle le fil peut être tiré par une extrémité du tambour et au moins un élément d'arrêt axialement espacé par rapport à la dernière spire de la réserve de fil enroulé. L'élément d'arrêt peut être déplacé entre une position passive, dans laquelle le fil tiré se déroule en passant par l'élément d'arrêt, et une position d'arrêt, dans laquelle le fil tendu est saisi pendant une phase de repos par l'élément d'arrêt jusqu'à ce que l'élément d'arrêt soit mis de nouveau en position passive. L'écartement axial entre la dernière spire (11') de la réserve de fil enroulé (S) et l'élément d'arrêt (13) peut être réglé en fonction de la qualité du fil sur une valeur maximale (Amax) qui empêche le fil (F) de flotter coaxialement pendant la phase de repos (F), au moins dans la dernière spire (11') et dans la section (12) du fil qui s'étend entre la dernière spire de la réserve de fil enroulé et l'élément d'arrêt (13).

Claims (9)

  1. Appareillage de stockage et distribution de fil pour machines textiles, notamment pour le fil de trame d'un métier à tisser en plusieurs couleurs, comportant un dispositif de limitation de la longueur du fil découpé en tronçons mesurés, un organe de stockage en forme de tambour pour une réserve de fil se composant de spires et de laquelle le fil peut-être dévidé par l'intermédiaire d'une extrémité du tambour, ainsi qu'au moins un élément d'arrêt du dispositif, espacé axialement de la dernière spire de la réserve de fil et qui est déplaçable depuis une position passive, où le fil dévidé avec un mouvement de rotation franchit l'élément d'arrêt, jusque dans une position dans laquelle le fil, soumis à une tension de dévidage, est maintenu, dans une phase de pause jusqu'au mouvement suivant de l'élément d'arrêt, dans la position passive contre l'élément d'arrêt, caractérisé en ce que l'espacement axial entre la dernière spire (11') de la réserve de fil (S) et l'élément d'arrêt (13) est réglable à une valeur maximale (Amax) pour laquelle dans la phase de pause, un mouvement axial de flottement du fil (F) est interdit dans au moins la dernière spire (11') et dans la partie du fil (12) située entre la dernière spire de la réserve de fil et l'élément d'arrêt (13).
  2. Appareillage de stockage et distribution de fil selon la revendication 1, caractérisé en ce que l'élément d'arrêt (13) est disposé de façon à être déplaçable, approximativement dans la direction axiale de l'organe de stockage (2), jusque dans une position où, quand le fil (F) est maintenu, l'angle entre la dernière spire (11') et la partie de fil (12) progressant de la dernière spire (11') jusqu'à l'élément d'arrêt (13) est limité à une valeur maximale (αmax) interdisant un mouvement axial de flottement du fil (F) dans la dernière spire (11'), cette valeur étant maintenue sensiblement invariante dans la phase de pause.
  3. Appareillage de stockage et distribution de fil selon la revendication 1, caractérisé en ce que la valeur maximale (Amax) de l'espacement axial entre la dernière spire de fil (11') et l'élément d'arrêt (13) est comprise approximativement entre deux fois et cinq fois le diamètre de fil .
  4. Appareillage de stockage et distribution de fil selon la revendication 2, caractérisé en ce que la valeur maximale (αmax) de l'angle formé entre la dernière spire de fil (11') et la partie de fil (12) est compris entre 5° et 30°, de préférence entre 10° et 15°.
  5. Appareillage de stockage et distribution de fil selon les revendications 1 à 4, dans lequel l'élément d'arrêt est logé, avec des organes d'actionnement, dans un carter fixé en position et situé avec espacement radial en regard de la surface de stockage de l'organe de stockage, caractérisé en ce que le carter est réglable dans la direction axiale de l'organe de stockage (2).
  6. Appareillage de stockage et distribution de fil selon les revendications 1 à 4, dans lequel l'élément d'arrêt est logé, avec des organes d'actionnement, dans un carter fixe en position et situé avec espacement radial en regard de la surface de stockage de l'organe de stockage, caractérisé en ce que l'élément d'arrêt (13) est réglable dans le carter (21) dans la direction axiale de l'organe de stockage (2) et peut être fixé dans différentes positions de réglage.
  7. Appareillage de stockage et distribution de fil selon une des revendications 1 à 6, où l'élément d'arrêt s'accroche, dans la position d'arrêt, dans un creux prévu dans la surface de stockage de l'organe de stockage, caractérisé en ce que, pour l'accrochage de l'élément d'arrêt (13), il est prévu, dans la direction de réglage de cet élément de d'arrêt (13), plusieurs creux (25) situés l'un après l'autre ou bien, il est prévu une rainure (26) orientée axialement et en ce que l'élément d'arrêt (13) est réglable, dans une plage axiale limitée, par échelons prédéterminés ou graduellement .
  8. Appareillage de stockage et distribution de fil selon une des revendications 1 à 7, dans lequel il est prévu, à l'extérieur de l'organe de stockage, un détecteur de maximum pour la réserve de fil, qui contrôle la position axiale de la dernière spire de cette réserve de fil, caractérisé en ce que le détecteur de maximum (8) et l'élément d'arrêt (13) sont logés dans un carter commun et en ce que le carter est réglable dans la direction axiale.
  9. Appareillage de stockage et distribution de fil selon la revendication 8, caractérisé en ce que l'espacement axial relatif entre l'élément d'arrêt et le détecteur de maximum est réglable dans le carter.
EP89911057A 1988-10-06 1989-10-05 Dispositif de stockage et de livraison du fil Expired - Lifetime EP0438439B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89911057T ATE100876T1 (de) 1988-10-06 1989-10-05 Fadenspeicher- und -liefervorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834055 1988-10-06
DE3834055A DE3834055C1 (fr) 1988-10-06 1988-10-06

Publications (2)

Publication Number Publication Date
EP0438439A1 EP0438439A1 (fr) 1991-07-31
EP0438439B1 true EP0438439B1 (fr) 1994-01-26

Family

ID=6364542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89911057A Expired - Lifetime EP0438439B1 (fr) 1988-10-06 1989-10-05 Dispositif de stockage et de livraison du fil

Country Status (7)

Country Link
US (1) US5170822A (fr)
EP (1) EP0438439B1 (fr)
JP (1) JP2961376B2 (fr)
KR (1) KR970007689B1 (fr)
CZ (1) CZ278713B6 (fr)
DE (2) DE3834055C1 (fr)
WO (1) WO1990004057A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19942121A1 (de) * 1999-09-03 2001-03-08 Iro Patent Ag Baar Verfahren zum Steuern eines Fadenverarbeitungssystems und Fadenverarbeitungssystem
CZ304713B6 (cs) * 2013-12-20 2014-09-03 Rieter Cz S.R.O. Způsob odstranění příze, zejména vadné příze, z mezizásobníku příze na pracovním místě textilního stroje a zařízení k jeho provádění

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529017A (en) * 1982-08-21 1985-07-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Apparatus for measuring the length of weft yarn for a loom
BE890082A (nl) * 1981-08-26 1982-02-26 Picanol Nv Draadvoorbereidingsinrichting voor schietspoelloze getouwen
JPS59482U (ja) * 1982-06-25 1984-01-05 津田駒工業株式会社 流体噴射式織機用緯糸貯留装置
BE900492A (nl) * 1984-09-04 1985-03-04 Picanol Nv Snelheidsregeling van inslagvoorafwikkelaar bij weefgetouwen.
EP0225670B1 (fr) * 1985-12-09 1989-05-17 Picanol N.V. Procédé et dispositif pour dérouler un fil d'une bobine dans les métiers à tisser
IT1188625B (it) * 1986-03-25 1988-01-20 Roy Electrotex Spa Dispositivo smorzatore delle oscillazioni e vibrazioni dei fili di trama in dispositivo alimentatori della trama per telai ad aria
BE905471A (nl) * 1986-09-23 1987-03-23 Picanol Nv Werkwijze om bij weefmaschines de lengte van de in de gaap te brengen inslagdraad te regelen en inrichtingen hierbij aangewend.
SE8800839D0 (sv) * 1988-03-09 1988-03-09 Iro Ab Forfarande och anordning for hastighetsreglering av en fournissor for mellan-lagring av garn, trad eller dylikt

Also Published As

Publication number Publication date
EP0438439A1 (fr) 1991-07-31
DE3834055C1 (fr) 1989-12-28
CZ278713B6 (en) 1994-05-18
JP2961376B2 (ja) 1999-10-12
JPH04501142A (ja) 1992-02-27
WO1990004057A1 (fr) 1990-04-19
US5170822A (en) 1992-12-15
CS8905645A2 (en) 1991-08-13
DE58906848D1 (de) 1994-03-10
KR970007689B1 (ko) 1997-05-15
KR900702103A (ko) 1990-12-05

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