EP0492505B1 - Dispositif de rattachage de fils entre une ensouple et un bobinoir - Google Patents

Dispositif de rattachage de fils entre une ensouple et un bobinoir Download PDF

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Publication number
EP0492505B1
EP0492505B1 EP91121949A EP91121949A EP0492505B1 EP 0492505 B1 EP0492505 B1 EP 0492505B1 EP 91121949 A EP91121949 A EP 91121949A EP 91121949 A EP91121949 A EP 91121949A EP 0492505 B1 EP0492505 B1 EP 0492505B1
Authority
EP
European Patent Office
Prior art keywords
tube
assembly
yarns
threads
thread
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
EP91121949A
Other languages
German (de)
English (en)
Other versions
EP0492505A1 (fr
Inventor
Luciano Casasola
Umberto Gerin
Fabio Lancerotto
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.)
GESMA - Gestione Sviluppo Medie Aziende SpA
Original Assignee
GESMA - Gestione Sviluppo Medie Aziende SpA
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 GESMA - Gestione Sviluppo Medie Aziende SpA filed Critical GESMA - Gestione Sviluppo Medie Aziende SpA
Publication of EP0492505A1 publication Critical patent/EP0492505A1/fr
Application granted granted Critical
Publication of EP0492505B1 publication Critical patent/EP0492505B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65H51/16—Devices for entraining material by flow of liquids or gases, e.g. air-blast devices
    • 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

  • This invention concerns a device to piece up threads or yarns being unwound from a beam and taken up on a winding machine, as set forth in the main claim.
  • FR-A-2 260 650 discloses a device to piece up threads or yarns between a beam and a gatherer, the threads or yarns being unwound at the same time from the beam and taking up a substantially parallel development before arriving at the gatherer, the band of threads or yarns having a first fan-shaped zone and a second zone of parallel threads or yarns.
  • the invention is applied advantageously in cooperation with winding machines fed with yarn from beams and employed downstream of textile operations such as continuous mercerization for instance.
  • the winding machines take up at one and the same time a plurality of threads or yarns being fed parallel to each other and coming fron one or more beams.
  • textile threads or yarns are meant here materials consisting of continuous or discontinuous fibres of a natural or manmade origin normally used in processes in the textile field.
  • each packaged beam whether it holds tens of threads or yarns or thousands thereof, entails the problem of having to be unwound when the threads or yarns have to be used individually thereafter.
  • the preferred package is a bobbin, whether cylindrical or tapered, at various spacings according to the specific usage.
  • the present applicant has protected a winding machine to take up a plurality of textile threads or yarns being unwound parallel to each other at the same time from one or more package supports, the winding machine being located advantageously downstream of apparatuses which process this plurality of parallel threads or yarns.
  • the winding machine comprises a headstock to load and unwind the support or supports bearing this plurality of threads or yarns, the supports being advantageously beams; the winding machine comprises also a support structure for a plurality of winding heads in a number coordinated with the number of threads or yarns to be taken up.
  • This support structure includes modular assemblies of winding heads arranged in succession one after another.
  • Each of these modular assemblies comprises at its inlet individual treatment means for a number of threads or yarns equal to the number of winding heads on the respective modular assembly.
  • the plurality of threads or yarns is individually treated on leaving the headstock and at least on entering the first modular assembly of the support structure.
  • the state of the art sets great limits to its operation as a result of problems of engaging and delivering the leading end of each thread or yarn to its respective winding head, the problems of breakage of the thread or yarn and delivery of the broken end to the machine operator, etc.
  • the invention enables the capacity of the winding heads to be fully exploited by increasing the average working speed from the present 200 metres a minute to 600 metres a minute or more. It also enables any broken thread or yarn to be intercepted and positioned automatically.
  • a plurality of first guide tubes in a number equal to that of the threads or yarns on the beam is provided between the assembly unwinding the beam and the winding machine.
  • These tubes may consist of a glass or a plastic material or a metal.
  • An aspiration system associated with a shears assembly is included downstream of the plurality of first guide tubes.
  • Mating second tubes are located between the first tubes and the aspiration system, and each of these second tubes bears a shears assembly.
  • a shears assembly may be included for more than one second tube.
  • a switch is included between each first tube and each second tube.
  • an assembly to accumulate a buffer quantity of thread is comprised between the first tubes and the beam and acts as a compensator.
  • a device 10 to piece up threads or yarns between a beam 11 and a winding machine lies between the beam 11 and a plurality of winding heads 19.
  • Fig.1 shows the beam 11 bearing a plurality of threads or yarns, which may be 50 or 100 in number or another given number; the beam 11 is positioned and driven by a drive assembly 111, which actuates the unwinding of the beam 11.
  • a band of threads or yarns 13 leaving the beam 11 passes through a thread buffer-holding assembly 12 which compensates any differences of speed or offtake or feed between the beam 11 and downstream units.
  • the buffer-holding assembly 12 comprises at least one oscillatory roll 32 and, at its exit, an assembly of drawing rolls 29.
  • the band of threads or yarns 13 spreads out apart and is arranged fan-wise until it takes up a coordinated position at an alignment zone 28.
  • each single thread or yarn meets a first tube 20, and a plurality of first tubes 20 constitutes a band 14 of first tubes.
  • second tubes 21 are included in alignment with the first tubes 20 and, being aligned, form a band 15 of second tubes 21.
  • An aspiration assembly 17 connected to an aspirator 18 is comprised at the downstream end of the band 15 of second tubes 21.
  • one knife-type shears 16 for each second tube 21 is included in an intermediate position at a required distance from the downstream end of the first tube 20.
  • one knife-type shears 16 can also work on a plurality of second tubes 21.
  • the distance between the shears 16 and the downstream end of the band 14 of first tubes is determined in relation to the distance between the downstream end of the first tube 20 and the winding head 19.
  • a switch 22 is positioned between the second tubes 21 and the first tubes 20 and can be displaced, thus enabling the machine operator to have access to a single thread or yarn diverted by the switch 22.
  • Figs.4 and 5 show the switch 22 as being of a rotary type able to be moved by a motor 23 which causes angular rotation, so that during the switching step the switch 22 interrupts the alignment of the first tube 20 with the second tube 21 and is positioned at an angle to the first and second tubes 20-21, thus assisting the operator to engage the thread or yarn passing through.
  • Figs.6 and 7 shows a shears assembly 16 with a single knife suitable to operate on each single thread or yarn present in the relative second tube 21.
  • the shears assembly 16 comprises a cylinder/piston actuator 24 connected to a knife 27 which contains a movable blade 25 and possibly a shock absorber 26.
  • the movable blade 25 When actuated by the cylinder/piston actuator 24, the movable blade 25 is raised and the thread or yarn is sheared.
  • Fig.3 shows a variant of the embodiment of Fig.1; this variant provides the advantage of taking up much less space since the band 15 of second tubes is positioned substantially parallel to and above (or below) the band 14 of first tubes, thus lessening considerably the lengthwise extent of the space occupied by the device.
  • the machine operator then arranges to place the single threads or yarns in front of each specific first tube 20 put under negative pressure by the aspiration assembly 17.
  • the warping machine thus embodied is now halted and all the shears, each one of which is located in correspondence with a second tube 21 in this example, shear their respective threads or yarns at the usable length pre-set for their attachment to their respective winding heads 19.
  • the switch 22 to enable the operator to engage the threads or yarns is opened in each single tract connecting the first tubes 20 to the second tubes 21.
  • the drawing rolls 29 and the drive assembly 111 are set in rotation with a pre-set, differentiated step of acceleration.
  • the increase in speed of the drive assembly 111 increases the speed of the threads or yarns and cuases displacement of the oscillatory roll 32 of the thread buffer-holding assembly 12.
  • the oscillatory roll 32 is associated with a position control station, and the system to control the speeds tends to keep the oscillatory roll 32 in that station.
  • the oscillatory roll 32 and the station are connected in turn to a system that regulates the speed of rotation of the drive assembly 111 and the drawing rolls 29.
  • each winding head 19 will regulate the take-up speed and adjust it to the speed of the thread or yarn leaving the drawing rolls 29.
  • the aspiration ensures the engagement of the end of the broken thread or yarn with a speed equal to the winding speed, so as to keep the thread or yarn always under a slight tension to prevent that thread or yarn becoming entangled with the other threads or yarns.
  • the aspiration assembly 17 is formed in such a way as to enable the negative pressure to be kept at about a desired value, which corresponds substantially to the aspiration of a determined number of broken threads or yarns at a determined speed for a determined period of time.
  • a desired value which corresponds substantially to the aspiration of a determined number of broken threads or yarns at a determined speed for a determined period of time.
  • the purpose of this is that the working of the aspirator should not be required continuously but should be required only when needed and that such working should take place when requested and therefore with a given delay but not with a regular or continuous actuation.
  • Any reduction of pressure within the aspiration assembly 17 can be compensated by means of a small vacuum pump or another analogous system.
  • shears 16 will keep its respective movable blade 25 raised so as to interrupt the aspiration arriving from the aspiration assembly 17 while the respective single thread or yarn is being taken up on the winding head and so long as this thread or yarn is not broken, the purpose being to economise negative pressure.
  • the threads or yarns which break during the working of the plant are intercepted at once, and the unwinding of such threads or yarns is ensured by the winding heads working in coordination with the drawing rolls 29 and drive assembly 111.
  • the lack of the thread or yarn will be notified at once by the single oscillatory roll 32 of the relative winding head 19, for this oscillatory roll 32 will fall and close a contact for instantaneous actuation of the relative shears 16 and thereafter of the relative switch 22, thus assisting aspiration of the broken thread or yarn and enabling the sheared thread or yarn to be arranged and positioned for the successive operations to be carried out by the machine operator.
  • an auxiliary aspirator assembly 30 may be included and be associated with an auxiliary aspirator 31 which aspirates the single threads or yarns immediately downstream of the beam 11 and upstream of the buffer-holding assembly 12.
  • a further second auxiliary aspirator assembly 130 may be included and be connected to a second auxiliary aspirator 131 positioned between the drawing rolls 29 and the upstream end of the individual first tubes 20, the purpose being to be able to collect any threads or yarns which break between the drawing rolls 29 and the first tubes 20.
  • the band 14 of first tubes 20 can also be positioned at an angle to the band 15 of second tubes 21.

Landscapes

  • Soil Working Implements (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Warping, Beaming, Or Leasing (AREA)
  • Looms (AREA)

Claims (11)

  1. Dispositif (10) pour renouer des fils entre une ensouple (11) et un bobinoir, une tête de bobinage (19) étant comprise pour chaque fil (13), les fils étant dévidés simultanément de l'ensouple (11) et prenant un développement essentiellement parallèle avant d'arriver sur leur tête de bobinage particulière (19), la bande de fils présentant une première zone en forme d'éventail et une seconde zone de fils parallèles avant d'atteindre leur tête de bobinage individuelle, un premier tube (20) étant compris pour chaque fil dans la seconde zone de fils parallèles, en coopération avec la première partie de cette zone, chaque premier tube (20) étant suivi par un déviateur (22) et par un second tube (21) reliés à un système d'aspirateur (17), le second tube (21) comportant dans une position intermédiaire une cisaille (16) du type à couteau, le déviateur (22) et le second tube (21) étant situés essentiellement dans le plan vertical contenant le fil particulier, le déviateur (22) présentant une position inactive extérieure au parcours normal du fil et une position de travail située dans le parcours de renouage du fil.
  2. Dispositif (10) selon la revendication 1, dans lequel un système (12) destiné à retenir une quantité-tampon de fil et comportant au moins un rouleau oscillant (32) est prévu entre les ensouples (11) et le premier tube (20).
  3. Dispositif (10) selon la revendication 1 ou 2, dans lequel un système de rouleaux de traction (29) est prévu à la sortie du système (12) de retenue-tampon de fil.
  4. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel le système d'aspiration (17) est d'un type destiné à maintenir une pression négative.
  5. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel un premier système (30) d'aspirateur auxiliaire est prévu dans le parcours entre l'ensouple (11) et le dispositif (12) de retenue-tampon.
  6. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel un second système d'aspirateur auxiliaire (130) est prévu dans le parcours entre le système de rouleaux de traction (29) et l'extrémité amont du premier tube (20).
  7. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel le premier tube (20) et le second tube (21) sont essentiellement coaxiaux et se suivent l'un l'autre.
  8. Dispositif (10) selon l'une quelconque des revendications 1 à 6 incluses, dans lequel le premier tube (20) et le second tube (21) sont essentiellement parallèles.
  9. Dispositif (10) selon l'une quelconque des revendications 1 à 6 incluses, dans lequel le premier tube (20) et le second tube (21) sont disposés essentiellement suivant un angle l'un par rapport à l'autre.
  10. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel la position verticale instantanée du rouleau oscillant (32) détermine la vitesse d'au moins un dispositif d,entraînement (111).
  11. Dispositif (10) selon l'une quelconque des revendications précédentes, dans lequel la position verticale instantanée du rouleau oscillant (32) détermine la vitesse au moins du système de rouleaux de traction (29).
EP91121949A 1990-12-28 1991-12-20 Dispositif de rattachage de fils entre une ensouple et un bobinoir Expired - Lifetime EP0492505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT08355190A IT1242696B (it) 1990-12-28 1990-12-28 Dispositivo per riattacco fili tra subbio e macchina roccatrice.
IT8355190 1990-12-28

Publications (2)

Publication Number Publication Date
EP0492505A1 EP0492505A1 (fr) 1992-07-01
EP0492505B1 true EP0492505B1 (fr) 1995-09-13

Family

ID=11322923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121949A Expired - Lifetime EP0492505B1 (fr) 1990-12-28 1991-12-20 Dispositif de rattachage de fils entre une ensouple et un bobinoir

Country Status (4)

Country Link
EP (1) EP0492505B1 (fr)
AT (1) ATE127765T1 (fr)
DE (1) DE69113011T2 (fr)
IT (1) IT1242696B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1262124B (it) * 1993-06-07 1996-06-19 Gesma Spa Dispositivo per il trascinamento dei fili tra subbio e macchina roccatrice

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1306808A (en) * 1969-12-22 1973-02-14 Turner Brothers Asbest Methods of and apparatus for conveying thread
US3946546A (en) * 1973-04-19 1976-03-30 Chavanoz S. A. False twist texturing apparatus
US3942312A (en) * 1973-10-19 1976-03-09 Chavanoz S.A. Machine for treating a textile thread by false twist
ES433988A1 (es) * 1974-02-08 1976-12-01 Barmag Barmer Maschf Perfeccionamientos introducidos en un cilindro giratorio para enhebrar hilo.
CH580180A5 (fr) * 1975-01-17 1976-09-30 Heberlein & Co Ag
DE2952400A1 (de) * 1979-12-24 1981-07-02 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Verfahren und vorrichtung zum aufspulen einer vielzahl von faeden
DE3604819A1 (de) * 1986-02-15 1987-08-20 Bayer Ag Foerderung von filamentverbaenden ueber weite foerderstrecken

Also Published As

Publication number Publication date
DE69113011T2 (de) 1996-05-23
IT1242696B (it) 1994-05-17
IT9083551A0 (it) 1990-12-28
ATE127765T1 (de) 1995-09-15
IT9083551A1 (it) 1992-06-29
DE69113011D1 (de) 1995-10-19
EP0492505A1 (fr) 1992-07-01

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