EP0281183A1 - Dispositif et procédé pour la manipulation et la commande du fil d'une machine de bobinage à cônes pendant les opérations de remplacement de bobine et de rattachement du fil - Google Patents

Dispositif et procédé pour la manipulation et la commande du fil d'une machine de bobinage à cônes pendant les opérations de remplacement de bobine et de rattachement du fil Download PDF

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Publication number
EP0281183A1
EP0281183A1 EP88200285A EP88200285A EP0281183A1 EP 0281183 A1 EP0281183 A1 EP 0281183A1 EP 88200285 A EP88200285 A EP 88200285A EP 88200285 A EP88200285 A EP 88200285A EP 0281183 A1 EP0281183 A1 EP 0281183A1
Authority
EP
European Patent Office
Prior art keywords
thread
handling
nozzle
control
machine during
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.)
Granted
Application number
EP88200285A
Other languages
German (de)
English (en)
Other versions
EP0281183B1 (fr
Inventor
Luigi Colli
Roberto Badiali
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.)
Savio SpA
Savio Macchine Tessili SpA
Original Assignee
Savio SpA
Savio Macchine Tessili 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 Savio SpA, Savio Macchine Tessili SpA filed Critical Savio SpA
Publication of EP0281183A1 publication Critical patent/EP0281183A1/fr
Application granted granted Critical
Publication of EP0281183B1 publication Critical patent/EP0281183B1/fr
Expired 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
    • 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
    • B65H54/22—Automatic winding machines, i.e. machines with servicing units for automatically performing end-finding, interconnecting of successive lengths of material, controlling and fault-detecting of the running material and replacing or removing of full or empty cores
    • 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
    • B65H54/70—Other constructional features of yarn-winding machines
    • B65H54/702—Arrangements for confining or removing dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
    • B65H2301/531—Cleaning parts of handling machine
    • 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 object of present invention is a device and a process for the handling and the control of the thread on an automatic coning machine, in particular during the operations of change of the feeding spool, and/or of restoration of the continuity of the thread by joining or knotting.
  • the coning operation consists in transferring the thread from a feeding spool to a cone wound up on a tube, detecting the defects thereof and removing any faulty lengths from it, by cutting them and knotting the free ends thereof.
  • the handling and control of the thread submitted to the coning is accomplished by means of various equipment pieces which the same thread meets according to a precise sequence along its route in the space, and which perform their action according to a sequence in time.
  • composition and the order of such sequence of pieces of equipment vary according to the productive choices, which tend to privilege some requirements of the operation, on the basis of different compromises between the various requirements.
  • DOS 2404035 discloses a technical solution aiming at preventing that on the cone slack turns may be wound after a new start-up following a thread joining. Such a purpose is achieved by inserting along the thread route an auxiliary thread tensioner, interposed between the knotting device and the cone drive cylinder, which is actuated during the start-up step only. In such a way, the formation of a loop of thread inside the knotting device - which is responsible for the above said slack turns - is prevented.
  • DOS 2824752 discloses a technical solution aiming at preventing that the slub catcher, after the breakage of the thread, may continue to detect the presence of the thread, by being occupied by a free end of the thread, or by a piece of the broken thread.
  • Such a technical solution consists in placing, between the thread tensioner, on the same side of the spool, and the same slub catcher, an air sucking nozzle, which is movable, and with an air stream moving out of the thread route.
  • an air sucking nozzle is controlled by the travelling service car, and cooperates with a cutting device provided between it and the slub catcher, in order to remove the free thread end, or the thread length present inside the slub catcher.
  • Such nozzle ends its task before the joining of the thread, and does not control the joined thread.
  • the feeding spool 1 installed on a fixed, expandable pivot, not shown, supplies the thread 2, which unwinds according to a spiral commonly called “the balloon”.
  • the thread meets the balloon-breaker 3, which contains and limits the amplitude of the balloon, and then the thread guide 4, which defines exactly the position of the thread at the entrance to the thread guided route.
  • a cutting device 5 is interposed, which is symbolically indicated with a pair of scissors, but which can have a whatever configuration.
  • the thread 2 finds then, along its upwards route, a pre-slub catcher 6, which is generally constituted by a slit of adjustable and preset size, for holding the clots or the coarsest imperfections, by tearing the thread.
  • a pre-slub catcher 6 which is generally constituted by a slit of adjustable and preset size, for holding the clots or the coarsest imperfections, by tearing the thread.
  • the point wherein the interruption of the thread occurs cannot be determined a priori , in that it necessarily occurs above the pre-slub catcher 6 due to the pulling by the upper winding-up device, and corresponds to the weakest portion of the overhanging thread. Its position, as well as the length of the free thread ends formed are hence whatever.
  • the thread 2 meets - after the pre-slub catcher 6 - ­the thread feeler 7, which is constituted by a detector device for the thread presence. Said thread feeler 7 must "feel" the stationary thread at the beginning of the handling intervention cycle.
  • the requested intervention is that of spool change and of thread joining; in the presence of the thread, on the contrary, a joining intervention only is requested.
  • the device 7 is hence that which determines the type of action to be undertaken, and hence the sequence of operations to be carried out.
  • the thread 2 finds then, along its upwards run, a further cutting device 8, also here symbolically indicated by a pair of cutting devices.
  • the thread 2 meets subsequently a thread tensioner 9.
  • Such thread tensioner device performs the function of giving the same thread a tension adjustable and ranging within preset limits, so to secure a regular cone winding up.
  • the thread tensioner performs also the auxiliary function of eliminating the weak thread lengths.
  • the thread tensioner device can be embodied with one or more tensioning sections, generally constituted by pairs of coaxial washers opposite to each other and urged against each other.
  • a thread tensioner device capable of maintaining such tension also in the presence of irregularities in the thread is the object of the same Applicant's European patent application No. 87 202275.1.
  • the thread tensioner device 9 is followed by the suction nozzle 10.
  • Such suction nozzle is one of the basic components of the device, and in the process according to the present invention the nozzle 10 performs the following functions:
  • the suction nozzle 10 is therefore subject to move in a direction perpendicular to the route of thread 2.
  • the thread meets then the slub catcher 12.
  • Such a device is one of the most important components of the coner machine, and its task is of detecting the defects of the thread 2 and of cutting the thread by means of a cutting device not shown in the figures, but substantially positioned in the same position as of the slub catcher.
  • the thread 2 runs then upwards and meets a funnel-­shaped member 13, which guides the same thread towards the thread guide slits 14 of the cylinder 15, which guide the turns of thread 2 on the cone 16.
  • the device is completed by further handling devices and auxiliary devices.
  • a further suction nozzle 21 - which, for the sake of clearness in the drawing is shown in Figure 3 - collects the thread end from the side of the feeding spool 1 in an extreme position 22 and, by revolving around the centre 23, takes it to the position 24, for it to be consigned to the knotting device 11.
  • Said suction nozzle 21 can - according to a preferred form of practical embodiment - be provided in its end portion with a catching cover, which holds the thread by clamping it between the cover and the nozzle edge. This contrivance secures a reliable catch also of short-length thread ends, which otherways would not be reliably caught by the suction effect alone, and allows furthermore economies to be accomplished in the suction.
  • the devices which are in contact with the thread - ­ such as, e.g., the slub catcher 12, the thread tensioner 9 and the thread feeler 7 - are maintained clean by means of the pressurized air jet ejected from the nozzles 25.
  • the handling intervention is commanded by the slub catcher, which detects the absence of the thread.
  • the matter is of only intervening to join the thread; in the latter two cases, the matter is of replacing the spool and joining the free thread end of the new spool with the free thread end of the cone.
  • the cone 16 and the driving cylinder 15 are preferably moved apart from each other and independently braked, in order not to damage the already coned thread. When the braking is performed, the cone and the cylinder are approached each other again.
  • the thread feeler 7 closes on the thread and, should this latter be absent, gives the command for spool 1 change, which is carried out simultaneously to the first steps of the knotting cycle. If, on the contrary, the thread is present, the knotting cycle only is performed.
  • the feeler 7 opens again.
  • the spool change is generally automatically carried out by the same machine, which collects the new thread end and takes it to a position, on the thread route, from which it can be collected by the nozzle 21, by means of the action of devices not identified in the figure.
  • the faulty spools must be replaced, like the exhausted spools. They can be processed by means of lower-productivity machines.
  • the nozzle 21 is placed in its position 22 already before the operation of change of spool 1.
  • the cutting device 5 cuts the free thread end of the spool to be discharged, the possible thread length above the cutting device 5 is intaken by the nozzle 21 and is removed.
  • the cutting device 8 is actuated, both whether the thread is present, or not.
  • the thread is present, it is subdivided into two lengths, the lower of which is removed by the nozzle 21, and the upper of which is intaken by the nozzle 10.
  • the thread route up to the slub catcher is now free from thread residues.
  • the nozzle 21 When the thread route is cleaned, the nozzle 21 is lifted according to the trajectory as shown by the short-­dash line, to a position of non-interference for the change of the spool, and the presentation of the new free thread end.
  • the upper thread end is positioned inside the knotting device.
  • This task is performed by the nozzle 17, which comes to the position 19 to collect said upper thread end from the cone, and then keeps it to the position 20, as shown in Figure 3.
  • the cylinder is actuated to unwind the thread length necessary for that purpose.
  • the nozzle 21 brings then the new thread end to the position 24 according to the short-dash trajectory.
  • such route is run along in two lengths, in the presence of limited-length thread ends; along a first, lifting, length some thread turns are unwound from the cone; the nozzle is then lowered again, so as to suck up again the unwound turns, to achieve a reliable hold, and the lifting up to position 24 is then carried out.
  • the suction nozzle 10 Before the new thread end is brought to position 24, the suction nozzle 10 has performed the functions as disclosed under (a) above.
  • the nozzle 10 shown in its normal position, after sucking up the thread ends and after the opening of the thread tensioner 9 and of the pre-slub catcher 6, moves to its advanced position 10A, and with the suction being continued, it extracts any dust and flock clots possibly accumulated in other devices.
  • the nozzle 21 leads the thread to the position 24.
  • the nozzle 10 moves back from its advanced position 10A to the retracted position 10B of Figures 3 and 4, meeting the new thread end 2 and inserting it into the thread joining unit 11.
  • the thread joining unit 11 can be constituted by a mechanical knotting device, as well as by a pneumatic or friction joining device, as required.
  • the hold of the thread end 2 is secured not only by the suction action, but also by a extension 26, which leads the thread to the position 2B.
  • the thread is released from the knotting device, but such a release is accompanied by the nozzle 10, which controls it by means of its extension 26, moving gradually back from the position 10B to its normal position, and thus preventing loops from being formed.
  • the thread feeler 7 signals the presence of the thread 2 inside it.
  • the interruption is caused by the slub catcher, the thread end is however hold by the nozzle; if, on the contrary, the interruption is due to a weak point interrupted by the thread tensioner, that situation may also not occur.
  • the knotting cycle takes place exactly as disclosed above, with the difference that the thread caught by the nozzle 21 is not the thread of the new spool which was replaced, but is always the same thread.
  • the cutting device 5 is kept inactive and the cutting operation is entrusted to the cutting device 8 only.
  • the remaining operations of the cycle are those as already disclosed referring to the intervention of spool change.
  • the present invention provides for an arrangement of equipment pieces, i.e., a thread route, which accomplishes a process for thread handling and control which removes the residual lengths, remove dust and clots collected inside the components before the continuity of the thread being restored, and, when the thread continuity is restored, prevents thread loops from forming at process resumption, by means of a movable suction nozzle synchronized with it, which is moved along the route of the thread.
  • equipment pieces i.e., a thread route

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
EP88200285A 1987-02-27 1988-02-17 Dispositif et procédé pour la manipulation et la commande du fil d'une machine de bobinage à cônes pendant les opérations de remplacement de bobine et de rattachement du fil Expired EP0281183B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19511/87A IT1202590B (it) 1987-02-27 1987-02-27 Dispositivo e procedimento per la manipolazione e il controllo del filo in una macchina roccatrice nelle operazioni di cambio della spola e di giunzione del filo
IT1951187 1987-02-27

Publications (2)

Publication Number Publication Date
EP0281183A1 true EP0281183A1 (fr) 1988-09-07
EP0281183B1 EP0281183B1 (fr) 1992-04-22

Family

ID=11158655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88200285A Expired EP0281183B1 (fr) 1987-02-27 1988-02-17 Dispositif et procédé pour la manipulation et la commande du fil d'une machine de bobinage à cônes pendant les opérations de remplacement de bobine et de rattachement du fil

Country Status (4)

Country Link
EP (1) EP0281183B1 (fr)
DE (1) DE3870282D1 (fr)
ES (1) ES2032943T3 (fr)
IT (1) IT1202590B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013138944A1 (fr) * 2012-03-21 2013-09-26 Uster Technologies Ag Tendeur de fil à disques comprenant un dispositif de nettoyage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013108A1 (de) * 2008-03-07 2009-09-17 Oerlikon Textile Gmbh & Co. Kg Arbeitsstelle eines Kreuzspulautomaten

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912193C (de) * 1942-01-28 1954-05-28 Schlafhorst & Co W Spulmaschine mit voneinander unabhaengigen ortsfesten Spulstellen
DE920055C (de) * 1941-10-18 1954-11-11 Schlafhorst & Co W Verfahren und Einrichtung zum Zufuehren von Fadenenden an selbsttaetigen Spulmaschinen
CH441078A (de) * 1966-06-01 1967-07-31 Schweiter Ag Maschf Knotvorrichtung an einer automatischen Spulmaschine
US3399840A (en) * 1965-12-09 1968-09-03 Hayashi Junichi Winding machine for winding yarns or the like materials into cheese or cones
US3834634A (en) * 1970-04-30 1974-09-10 Elitex Zavody Textilniho Method of controlling the knotting procedure in textile machines, particularly automatic winding machines and pneumatic circuit for performing said method
DE2404035A1 (de) * 1974-01-29 1975-08-07 Schlafhorst & Co W Automatische kreuzspulmaschine
DE2543983B1 (de) * 1975-10-02 1976-12-02 Mayer Fa Karl Garnpruefvorrichtung fuer Textilmaschinen
DE2705080A1 (de) * 1977-02-08 1978-08-10 Mayer Fa Karl Kreuzspulautomat
DE2824752A1 (de) * 1978-06-06 1979-12-13 Schlafhorst & Co W Spulmaschine fuer textilfaeden
DE3213631A1 (de) * 1981-04-13 1982-10-28 Murata Kikai K.K., Kyoto Steuereinrichtung fuer das abnehmen einer spule aus einem spulautomaten
DE3241280C1 (de) * 1982-11-09 1984-06-14 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Automatische Spulmaschine

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920055C (de) * 1941-10-18 1954-11-11 Schlafhorst & Co W Verfahren und Einrichtung zum Zufuehren von Fadenenden an selbsttaetigen Spulmaschinen
DE912193C (de) * 1942-01-28 1954-05-28 Schlafhorst & Co W Spulmaschine mit voneinander unabhaengigen ortsfesten Spulstellen
US3399840A (en) * 1965-12-09 1968-09-03 Hayashi Junichi Winding machine for winding yarns or the like materials into cheese or cones
CH441078A (de) * 1966-06-01 1967-07-31 Schweiter Ag Maschf Knotvorrichtung an einer automatischen Spulmaschine
US3834634A (en) * 1970-04-30 1974-09-10 Elitex Zavody Textilniho Method of controlling the knotting procedure in textile machines, particularly automatic winding machines and pneumatic circuit for performing said method
DE2404035A1 (de) * 1974-01-29 1975-08-07 Schlafhorst & Co W Automatische kreuzspulmaschine
DE2543983B1 (de) * 1975-10-02 1976-12-02 Mayer Fa Karl Garnpruefvorrichtung fuer Textilmaschinen
DE2705080A1 (de) * 1977-02-08 1978-08-10 Mayer Fa Karl Kreuzspulautomat
DE2824752A1 (de) * 1978-06-06 1979-12-13 Schlafhorst & Co W Spulmaschine fuer textilfaeden
DE3213631A1 (de) * 1981-04-13 1982-10-28 Murata Kikai K.K., Kyoto Steuereinrichtung fuer das abnehmen einer spule aus einem spulautomaten
DE3241280C1 (de) * 1982-11-09 1984-06-14 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Automatische Spulmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013138944A1 (fr) * 2012-03-21 2013-09-26 Uster Technologies Ag Tendeur de fil à disques comprenant un dispositif de nettoyage
CH706263A1 (de) * 2012-03-21 2013-09-30 Uster Technologies Ag Tellerfadenbremse mit Reinigungseinrichtung.

Also Published As

Publication number Publication date
ES2032943T3 (es) 1993-03-01
EP0281183B1 (fr) 1992-04-22
DE3870282D1 (de) 1992-05-27
IT8719511A0 (it) 1987-02-27
IT1202590B (it) 1989-02-09

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