EP0863236B1 - Dispositif de préparation de la trame destiné en particulier à fournir des fils métalliques, de nylon ou similaires à des métiers à tisser - Google Patents

Dispositif de préparation de la trame destiné en particulier à fournir des fils métalliques, de nylon ou similaires à des métiers à tisser Download PDF

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Publication number
EP0863236B1
EP0863236B1 EP19980102124 EP98102124A EP0863236B1 EP 0863236 B1 EP0863236 B1 EP 0863236B1 EP 19980102124 EP19980102124 EP 19980102124 EP 98102124 A EP98102124 A EP 98102124A EP 0863236 B1 EP0863236 B1 EP 0863236B1
Authority
EP
European Patent Office
Prior art keywords
drum
thread
weft thread
preparation device
disk
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
EP19980102124
Other languages
German (de)
English (en)
Other versions
EP0863236A1 (fr
Inventor
Sergio Trinca Colonel
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.)
Officina Meccanica Trinca Colonel Silvio & Figlio Sergio SNC
Original Assignee
Officina Meccanica Trinca Colonel Silvio & Figlio Sergio SNC
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 Officina Meccanica Trinca Colonel Silvio & Figlio Sergio SNC filed Critical Officina Meccanica Trinca Colonel Silvio & Figlio Sergio SNC
Publication of EP0863236A1 publication Critical patent/EP0863236A1/fr
Application granted granted Critical
Publication of EP0863236B1 publication Critical patent/EP0863236B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • 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
    • D03D47/345—Rotating bobbins
    • 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 weft thread preparation device, particularly for feeding threads made of metal, nylon and the like to machines for weaving.
  • the thread is not subjected, during unwinding, to permanent deformations that can damage its characteristics.
  • a first conventional kind of device is provided with a fixed drum constituted by two facing parallel disks which are mutually connected by threaded pivots which can rotate about their own axis.
  • An arm arranged outside the drum unwinds the weft thread from the corresponding spool and winds it on the threaded pivots, which rotate about their own axes under the force applied by the thread and move the thread from one of their ends to the other, where the thread is released from the drum in order to feed it to the weaving loom.
  • the thread also passes from the spool to the drum by means of the arm along a path which is not straight but is instead constituted by a series of curves which entail the forming of bends in the thread which can be permanent if the cross-section of said thread is significant.
  • the weft thread fed to the weaving loom does not have characteristics that allow the loom to provide a fabric of the intended quality or cannot be woven at all.
  • a second conventional kind of weft thread preparation device is provided with a solid drum which rotates about its own axis and on which the thread taken from the spool is wound.
  • US-A-2 605 536 discloses a strand storage and advancement reel having a combination of elements as recited in the precharacterizing portion of the appended claim 1.
  • the aim of the present invention is therefore to provide a weft thread preparation device for weaving looms which allows to feed the weft thread from the spool on which it is wound to the loom along a direct path without forming bends.
  • an object of the present invention is to provide a weft thread preparation device for weaving looms which allows to unwind the thread from the corresponding spool with the spool arranged either horizontally or vertically with respect to the resting surface.
  • Another object of the present invention is to provide a weft thread preparation device for weaving looms which allows to feed the weft thread in a controlled manner to the weaving loom.
  • Another object of the present invention is to provide a weft thread preparation device for weaving looms which maintains a substantially constant tension on the thread.
  • Another object of the present invention is to provide a weft thread preparation device which is highly reliable and relatively easy to provide at competitive costs.
  • the weft thread preparation device comprises a drum 1 which is constituted by two parallel facing disks 1a and 1b mutually connected by spacers 2 which are arranged circumferentially.
  • the drum 1 is keyed on a shaft 3 which is actuated by a motor 4 by means of a driving belt 5 which engages a pulley 10.
  • the drum 1 is supported by a supporting frame 6 which is constituted by a mounting provided with four arms 7 which protrude from the mounting and are suitable to form four resting points for the drum 1.
  • each arm 7 there is provided a grooved wheel 8 which can rotate with respect to the corresponding arm 7.
  • a total of four grooved wheels 8 are provided which constitute four supporting points within which the drum 1 rests so that it can rotate freely.
  • the outer disk 1b of the drum 1 rests in the grooves of the four grooved wheels 8.
  • threaded pivots 9 are arranged circumferentially and connect the disk la to the disk 1b of the drum 1.
  • the thread of the pivots 9 is preferably provided along approximately three quarters of their length.
  • the extension of the screw thread varies according to the number of turns of the thread 16 to be formed on the threaded pivots 9.
  • the threaded pivots 9 can rotate about their own axis under the effect of the traction applied by kinematic means, as described hereinafter.
  • Kinematic means conveniently constituted for example by a chain 11 and by a pinion 12 which is keyed on the shaft 3 and is arranged adjacent to the disk la, are provided for rotating the threaded pivots 9.
  • Each threaded pivot 9 has a pinion 13 which is arranged adjacent to the disk la and is adapted to engage the chain 11 for rotating the pivot 9.
  • the chain 11 is thus arranged so that it passes around each threaded pivot 9 after passing around the pinion 12 in order to receive the motion imparted by the driving shaft 3.
  • sprockets 14 are provided and connected to the disk la in a staggered position and internally with respect to the plurality of threaded pivots 9. In this manner, the chain 11 follows a path around each sprocket 14 and each threaded pivot 9, so as to pass internally to each threaded pivot 9 relative to the edge of the disk 1a.
  • each threaded pivot 9 rotates in the opposite direction with respect to the rotation of the drum 1, so as to maintain a correct tension of the weft thread 16 that winds on the threaded pivots 9.
  • a feeder 17 is provided for passing the weft thread 16 that arrives from the spool 15 to the threaded pivots 9 of the drum 1.
  • the thread 16 passes over a guiding roller 18, through a braking element 19 and finally through the feeder 17.
  • a microswitch 20 located on the inner face of the disk 1b and actuated by a rod 22 is provided in order to stop the rotation of the drum 1 and therefore the unwinding of the thread 16 from the spool 15.
  • the microswitch 20 has a contact which is grounded on a disk which is rigidly coupled to the driving shaft 3.
  • the disk 1b is circumferentially provided with a groove for the exit of the thread 16 and for subsequently sending it to a weaving loom (not shown).
  • the operation of the weft thread preparation device according to the present invention is as follows.
  • the drum 1, keyed on the shaft 3, is rotated by the belt 5, which engages the pulley 10 which is rigidly coupled to the shaft 3 by means of the motor 4, and the rotation of the drum 1 allows the weft thread 16 to unwind from the corresponding spool 15 located at the base of the device according to the present invention.
  • the thread 16 unwound from the spool 15 winds on the threaded pivots 9, which are in turn rotated by the chain 11, meshing with the pinion 12.
  • the rotation of the drum 1 allows the thread 16 to unwind from the spool 15 without forming spirals, as usually occurs when the spool 15 is arranged so that its diametrical axis is perpendicular to the resting region.
  • the rotation of the threaded pivots 9 causes the weft thread 16 to move along the screw thread of the pivots 9 in order to pass from a position in which it is adjacent to the disk la to a position in which it is adjacent to the disk 1b, from which it then exits through the groove formed in the disk 1b.
  • the device according to the present invention fully achieves the intended aim, since it allows to prepare the weft thread, unwinding it from the corresponding spool, and to send it to the weaving loom along a substantially straight path without making the thread form undesirable bends and thus without damaging said thread.
  • the spool on which the weft thread is initially wound can also be arranged so that its diametrical axis is parallel to the resting area of the device, so that the passage of the thread from the spool to the drum occurs along a substantially straight path.
  • the sensor for detecting the accumulation of weft thread on the drum allows to stop the rotation of the drum when the weft thread on it has reached a preset number of turns, so as to match the unwinding of the thread from its spool with the speed with which said thread is taken up by the weaving loom.
  • the spool 15 is shown arranged so that its diametrical axis is parallel to the resting region, but as mentioned, in the case of fine threads (wherein formation of spirals does not entail problems, since the thread is supple) it is possible to arrange the spool 15 so that its diametrical axis is perpendicular to the resting region.
  • the chain 11 for rotating the threaded pivots 9 is also shown to pass on the inside of said pivots with respect to the peripheral rim of the disk la that constitutes one of the faces of the drum 1 and on which the chain 11 is arranged.
  • this arrangement has been found to ensure optimum tensioning of the thread 16, making the threaded pivots 9 rotate in the opposite direction with respect to the drum 1, it is nonetheless possible to pass the chain 11 on the outside of the threaded pivots 9, so as to make them rotate in the same direction as the drum 1 (this alternative is not shown in the various figures).
  • the pitch of the screw thread of the threaded pivots 9 is orientated in the opposite direction with respect to the one shown in the figures.
  • the materials employed may be any according to requirements and the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Reinforced Plastic Materials (AREA)

Claims (7)

  1. Dispositif de préparation de fil de trame pour fournir des fils réalisés en métal, en Nylon et analogue à un métier à tisser, comprenant un tambour rotatif (1) muni d'un arbre d'entraínement (3) et d'une pluralité de pivots filetés (9) qui sont agencés périphériquement et peuvent tourner autour de leurs propres axes grâce à quoi la rotation dudit tambour (1), en même temps que la rotation desdits pivots filetés (9), est appropriée pour produire la rotation d'une bobine (15) de fil de façon à dérouler ledit fil (16) de la bobine (15) et à déplacer ledit fil (16) le long desdits pivots filetés (9) pour fournir ensuite le fil (16) à un métier à tisser, des moyens cinématiques (11, 12) étant prévus, reliés audit arbre d'entraínement (3) dudit tambour (1) pour faire tourner lesdits pivots filetés (9) simultanément avec et à la suite de la rotation dudit tambour (1), ledit tambour (1) comprenant un premier disque (1a) et un second disque (1b) qui se font face l'un l'autre et sont mutuellement parallèles,
    caractérisé par des moyens (20, 22) pour bloquer la rotation dudit tambour (1), qui sont agencés sur ledit tambour (1) et sont appropriés pour interrompre sa rotation quand un certain nombre de spires de fil (16) sur lesdits pivots filetés (9) est atteint, lesdits moyens de blocage comprenant un microcontact (20) actionné par une tige (22), ladite tige (22) étant capable de se déplacer vers le bas sous le poids du fil et étant agencée sur ledit tambour (1) dans une position qui est adjacente à celle desdits pivots filetés (9), lesdits moyens cinématiques (11, 12) et lesdits moyens de blocage (20, 22) étant tous agencés dans un espace défini entre ledit premier disque (1a) et ledit second disque (1b) se faisant face mutuellement.
  2. Dispositif de préparation de fil de trame selon la revendication 1,
    caractérisé en ce que ledit premier disque (1a) et ledit second disque (1b) sont mutuellement reliés par des entretoises (2).
  3. Dispositif de préparation de fil de trame selon la revendication 2,
    caractérisé en ce que ledit tambour (1) est claveté sur un arbre (3) qui est entraíné par un moteur (4) par l'intermédiaire d'un entraínement par courroie et poulie (5, 10).
  4. Dispositif de préparation de fil de trame selon la revendication 3,
    caractérisé en ce que chacun de ladite pluralité de pivots filetés (9) comprend un pignon (13) qui est agencé de façon adjacente audit premier disque (1a).
  5. Dispositif de préparation de fil de trame selon la revendication 4,
    caractérisé en ce que lesdits moyens cinématiques (11, 12) sont reliés audit arbre (3) et respectivement au pignon (13) de chacun de ladite pluralité de pivots filetés (9).
  6. Dispositif de préparation de fil de trame selon la revendication 5,
    caractérisé en ce que lesdits moyens cinématiques comprennent un pignon (12), qui est claveté sur ledit arbre (3) et est adjacent audit premier disque (1a), et une chaíne (11), adaptée pour s'engrener avec ledit pignon (12) et avec les pignons (13) de ladite pluralité de pivots filetés (9).
  7. Dispositif de préparation de fil de trame selon la revendication 5,
    caractérisé en ce que lesdits moyens cinématiques comprennent également une pluralité de roues dentées (14) qui sont agencées de sorte qu'elles sont alternées et étagées par rapport à ladite pluralité de pivots filetés (9), ladite chaíne (11) étant agencée de façon à engager lesdites roues dentées (14) et lesdits pignons (13) desdits pivots filetés (9).
EP19980102124 1997-02-12 1998-02-06 Dispositif de préparation de la trame destiné en particulier à fournir des fils métalliques, de nylon ou similaires à des métiers à tisser Expired - Lifetime EP0863236B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI970283 1997-02-12
ITMI970283 IT1290300B1 (it) 1997-02-12 1997-02-12 Dispositivo preparatore del filo di trama,particolarmente per l'alimentazione di fili metallici,di nylon e simili a telai di

Publications (2)

Publication Number Publication Date
EP0863236A1 EP0863236A1 (fr) 1998-09-09
EP0863236B1 true EP0863236B1 (fr) 2003-05-07

Family

ID=11375967

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980102124 Expired - Lifetime EP0863236B1 (fr) 1997-02-12 1998-02-06 Dispositif de préparation de la trame destiné en particulier à fournir des fils métalliques, de nylon ou similaires à des métiers à tisser

Country Status (3)

Country Link
EP (1) EP0863236B1 (fr)
DE (1) DE69814215T2 (fr)
IT (1) IT1290300B1 (fr)

Families Citing this family (1)

* 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605536A (en) * 1947-07-12 1952-08-05 Cyril A Litzler Reel
US2609587A (en) * 1950-05-17 1952-09-09 Kuljian Harry Asdour Filament storing and advancing reel
US4026484A (en) * 1971-06-19 1977-05-31 Pavena Ag Apparatus for controlling a winding device for a continuously supplied fiber sliver
US3774384A (en) * 1972-02-28 1973-11-27 Leesona Corp Yarn processing post treatment
IT1133857B (it) * 1980-02-05 1986-07-24 Vysoka Skola Strojni Textilni Procedimento per regolare la velocita' e la densita' dell'avvolgimento di filato e la formazione di una sua scorta nonche' disposizione per la realizzazione di questo procedimento

Also Published As

Publication number Publication date
EP0863236A1 (fr) 1998-09-09
IT1290300B1 (it) 1998-10-22
DE69814215T2 (de) 2004-03-18
ITMI970283A1 (it) 1998-08-12
DE69814215D1 (de) 2003-06-12

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