EP0053093B1 - Procédé pour défaire une portion d'un fil textile et dispositif pour la mise en oeuvre de ce procédé - Google Patents

Procédé pour défaire une portion d'un fil textile et dispositif pour la mise en oeuvre de ce procédé Download PDF

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Publication number
EP0053093B1
EP0053093B1 EP81810435A EP81810435A EP0053093B1 EP 0053093 B1 EP0053093 B1 EP 0053093B1 EP 81810435 A EP81810435 A EP 81810435A EP 81810435 A EP81810435 A EP 81810435A EP 0053093 B1 EP0053093 B1 EP 0053093B1
Authority
EP
European Patent Office
Prior art keywords
fibers
thread
duct
yarn
wire
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
Application number
EP81810435A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0053093A1 (fr
Inventor
Guy Negaty-Hindi
Carlos Pujol
Erwin Zurcher
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.)
SCHWEITER MASCHINENFABRIK A.G.
Mesdan SpA
Original Assignee
Schweiter Maschinenfabrik AG
Mesdan 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4343043&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0053093(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schweiter Maschinenfabrik AG, Mesdan SpA filed Critical Schweiter Maschinenfabrik AG
Priority to AT81810435T priority Critical patent/ATE15787T1/de
Publication of EP0053093A1 publication Critical patent/EP0053093A1/fr
Application granted granted Critical
Publication of EP0053093B1 publication Critical patent/EP0053093B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • 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
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • 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 subject of the present invention is a method for undoing a portion of a textile thread, held by at least one of its ends, and a device for implementing this method.
  • the resistance of the piecing is extremely low because the two bundles of fibers are wound in a helix one around the other, most of the fibers then not participating in the strength of the piecing.
  • a mode of wire joining described in US-A-4 263 775 shows that one can prepare the ends of wires to be tied up by holding them at one end and by introducing their cut ends into two suction nozzles. According to this document, it is planned to communicate to the air flows of these nozzles vortex movements intended to untwist the ends of the wires and to facilitate the separation of the non-held fibers in order to prepare them for the connection. Experience has shown that this mode of separation of the yarns is only effective for yarns spun according to the ring-cursor method, but not in the case of other types of yarns such as those mentioned above.
  • the invention relates to a method according to claim 1.
  • Fig. 1 shows a portion of wire F, one end of which is fixed at P and the other end of which carries a weight M of approximately 5 to 10 g.
  • the thread Under the action of the latter the thread will become untwisted. If it is a thread obtained on a slider ring loom, the weight M will fall after a certain number of turns carrying with it the untwisted fibers which are not retained in P. On the other hand, if it s 'is a yarn obtained by the open-end spinning process, all the fibers will not participate in the untwisting since some of them did not participate directly in the average twist of the yarn, so that the weight M will be obtained by these fibers and will not fall.
  • Fig. 1 shows, in addition, a vibrating blade L fixed on a support so that it is close to the wire and parallel to it.
  • An electromagnet E supplied with current pulses by a generator G, is arranged so as to make the blade L vibrate.
  • vibrations are communicated to the fibers of the wire F, which will have the consequence the reduction of their coefficient of friction and their dislocation, so that all the fibers not retained in P will separate under the action of the weight M and this one will fall after a certain time so far that the frequencies of the blade L and of the pendulum system formed by the wire F and the weight M are different and not harmonic.
  • the frequency of the blade L is 100 Hz and the separation of the fibers, under the action of the weight M, occurs in a few seconds.
  • the free end of the wire F a bundle consisting of all the fibers retained at P, the length of which corresponds substantially to the average length of the fibers. This is an important factor in obtaining good bonding of the wire.
  • the device shown in fig. 2 comprises a comb C connected to a transducer T, associated with a pulse generator G via an amplifier S.
  • the transducer T is associated with a worm screw V driven by a motor D.
  • the vibrations reducing the coefficient of friction of the fibers cause the dislocation of these fibers and facilitate the progression of the teeth of the comb C. As soon as the latter arrives at a distance from the pinch point P corresponding to the length of the fibers, the yarn is undone and the fibers not retained in P are separated and eliminated.
  • the vibrating member is driven pneumatically, the pressurized air being widely available in the textile industry and the range of frequencies then depending only on the natural frequency of the vibrating member which can be sized accordingly.
  • the energy transmitted to the wire can be greater than the energy developed in the device described above.
  • This device essentially comprises two pins 1 and 2 mounted rotatably each in a support 3 and 4 respectively, mounted oscillating in a frame 5 along an axis orthogonal to that of the spindle.
  • Each of these pins 1 and 2 ends at one of its ends with a circular head 6, respectively 7, split radially 6a, respectively 7a, to allow the wire F to engage in this circular head 6, respectively 7 and s 'wrap around pin 1, respectively 2.
  • the supports 3 and 4 are likely to occupy two positions each, one in which pins 1 and 2 are coaxial and the other in which they are parallel one to the other. In the latter position, shown in FIG. 4, each of the pins 1 and 2 is located opposite the end of a duct 8, respectively 9, connected to an air suction source 10.
  • each of the ducts is formed of two parts 11a and 11b, respectively 12a and 12b, which extend substantially longitudinally in the duct. These two parts are fixed to each other, for example by means of screws 13 (fig. 5).
  • a flexible beat element constituted by a tongue 14, respectively 15, secured to a fixing lug 16, respectively 17 clamped between said parts d 'end 11a and 11b, respectively 12a and 12b and forming with the respective tongue a T.
  • These beat elements are preferably cut from a rubber membrane about 0.25 mm thick.
  • Each of the tongues 14 and 15 is preferably located near the longitudinal axis of the respective conduit in order to be able to float freely therein.
  • the section of these conduits 8 and 9, at least in their part in which the tongue 14, respectively 15, extends, is preferably square or rectangular so that the free end of the tongue can beat against two opposite walls of the drove.
  • a comb 18 and 19 is fixed respectively.
  • In each of the conduits 8 and 9 opens a channel 20 and 21 respectively, intended for the admission of secondary air.
  • a pair of scissors formed by two steel blades 22 and 23, one of which 22 is slidably mounted relative to the "other" 23 and each of which is pierced with an opening 24 and 25 respectively, is arranged transversely to each of the suction conduits 8 and 9.
  • each of them is introduced into one of the conduits 8 and 9 in which there is a slight depression created by the suction source 10.
  • the pins 1 and 2 are rotated in opposite directions, so that on each of them a portion of respective wire is wound by virtue of its taking in the slot 6a, respectively 7a, formed in the head 6 , respectively 7, of the spindle 1, respectively 2.
  • the blades 22 are then made to slide relative to the blades 23 of the two pairs of scissors, in order to cut the wires in the conduits at the level of the openings 24 and 25, so as to obtain in the upper part of each of the conduits 8 and 9 a portion of wire, one end of which is held by the respective pin.
  • the elbow formed in each conduit 8 and 9 below the scissors 22, 23, allows, during the winding of the wire on each of the pins 1 and 2, to induce a certain distortion of the wire in the portion between the spit and the elbow.
  • the direction of twist of the fibers in this portion must be opposite to the direction of rotation of the spindle. If, in an “open-end” yarn, an appreciable part of the fibers are not twisted, the vibrations communicated to these fibers by tabs 14 and 15, reduce their coefficient of friction, so that all the fibers which are not retained by pins 1 and 2 are eliminated by the air flow circulating in the conduits, only the dislocated fibers, retained by the pins, remaining in the conduits and forming the two ends of the wire to be twisted.
  • each of the two assemblies associated with the connecting device and formed by a conduit 8, respectively 9, open at both ends, of a flexible beat element 14 , respectively 15, and a source of air intake, constitutes a device implementing the method according to the present invention.
  • this device makes it possible to undo the wires which hitherto could not have been under the sole effect of the means normally included in such a connecting device, that is to say by means of the combs 18 and 19 and of the air flow in the conduits 8 and 9.
  • the wire is defeated in a time not exceeding one second. It is obvious that this device is far more efficient than the two devices shown in Figs 1 and 2 respectively. It is much more reliable, much simpler to carry out and makes it possible to reduce the duration of the operation.
  • Figs 6 and 7 illustrate another embodiment of the pneumatic device associated with a connecting device which is the subject of EP-A1-0 029 808 to which we can refer for more details on the actual connection.
  • Figs 6 and 7 illustrate only one of the two oscillating supports 28, carrying a pin 29 rotatably mounted about an axis orthogonal to that of oscillation of the support 28 and provided with a head 19a split radially.
  • the other support, not shown, is perfectly similar to support 28 and is not necessary for understanding the invention since the operation of undoing the ends of the wire to be attached is carried out symmetrically on the two supports.
  • the support 28 is integral with a tubular shaft 30 to which is fixed a radial arm 31 connected to the rod of a drive piston 32.
  • An arm 33 one end of which carries a bevel gear 34, passes through the tubular shaft 30 This pinion 34 is engaged with a second bevel gear 35 wedged on the shaft of the spindle 29.
  • a plate 36 having essentially a channel 37 and a distribution chamber 40 into which opens an intake duct 38 connected to a pressurized air source 39 is fixed on the support 28.
  • the distribution chamber 40 has a nozzle 41 at the level of the channel 37, formed by a lip 42 forming a flow along the surface of this channel.
  • a bypass conduit 43 connects the chamber 40 to a bore 44 in which is fixed a cone 45 whose apex is adjacent to the bottom of the channel 37 and whose axis of revolution is perpendicular to the bypass conduit 43.
  • a second tubular shaft 46 connected to the rod of a jack 47 by a radial arm 48, is pivotally mounted around the tubular shaft 30, as well as through a frame 49.
  • This tubular shaft 46 is integral with a second radial arm 50 at the end of which is pivoted a fixing rod 51 connected to a frame 52.
  • a second fixing rod 53, fixed to the same frame 52 is pivoted through an arm 54 parallel to the radial arm 50 and articulated to the end of another radial arm 55 secured to the tubular shaft 30, so as to form a deformable parallelogram, carrying the frame 52.
  • the frame 52 carries a natural rubber membrane 56 of about 0.25 mm thick, which has a longitudinal slot 56a and two transverse slots 56b delimiting two tabs 56c whose longitudinal ends are adjacent.
  • This frame 52 is capable of occupying two positions relative to the support 28, controlled by the jack 47. In one of these positions, the frame 52 is adjacent to the plate 36 and its channel 37, in the other, shown in lines mixed in fig. 6, it is excluded.
  • Two suction tubes 57 and 58, connected to a suction source 59 are arranged on either side of the oscillating support 28 and its plate 36, when the support is in the position shown in FIG. 6. These tubes serve to tension the wire F through the plate 36 while the frame 52 is spaced from this plate and to pass it against the edge of the slotted head 29a of the spindle 29.
  • the spindle 29 is rotated using the shaft 33 and the gears 34 and 35.
  • the wire F enters the slot in the head 29a and is wound around the spindle 29.
  • the direction of rotation of the spindle is chosen so as to untwist the portion of wire between the head 29a and the suction tube 58, as explained in detail in the aforementioned Swiss patent.
  • the frame 52 carrying the membrane 56 is brought, by virtue of its carrying system with deformable parallelogram 50, 54 and 55, against the plate 36, so that the membrane 56 covers the wire located in channel 37.
  • Pressurized air is then sent to the distribution chamber 40 and from this into the channel 37.
  • the air flow passing through the channel vibrates the tabs 56c which beat the wire which is at the same time subjected to a tensile force due to the friction of the air current.
  • the yarn breaks completely and the fibers not retained by the spindle 29 are separated and eliminated by the air stream.
  • the device according to the invention incorporated in the connecting device, is formed from the channel 37, the membrane 56 with its tongues 56c, and the air source under pressure (with the conduits connecting it to channel 37).
  • the vibrating elements 56c driven in vibration by the air current, have been dimensioned to vibrate at frequencies of the order of 500 to 2000 Hz. It has been observed that it is in this frequency range with elements made of a material as flexible as rubber of the order of 0.2 to 0.3 mm thick capable of vibrating, at these frequencies, at amplitudes of the order of a millimeter, as the results are best.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Coating With Molten Metal (AREA)
EP81810435A 1980-11-24 1981-10-30 Procédé pour défaire une portion d'un fil textile et dispositif pour la mise en oeuvre de ce procédé Expired EP0053093B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81810435T ATE15787T1 (de) 1980-11-24 1981-10-30 Vorrichtung zum aufdrehen einer laenge eines textilgarnes und vorrichtung zur anwendung dieses verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH864680 1980-11-24
CH8646/80 1980-11-24

Publications (2)

Publication Number Publication Date
EP0053093A1 EP0053093A1 (fr) 1982-06-02
EP0053093B1 true EP0053093B1 (fr) 1985-09-25

Family

ID=4343043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81810435A Expired EP0053093B1 (fr) 1980-11-24 1981-10-30 Procédé pour défaire une portion d'un fil textile et dispositif pour la mise en oeuvre de ce procédé

Country Status (14)

Country Link
US (1) US4406115A (ko)
EP (1) EP0053093B1 (ko)
JP (1) JPS57117470A (ko)
KR (1) KR830007906A (ko)
AT (1) ATE15787T1 (ko)
AU (1) AU541593B1 (ko)
BR (1) BR8107499A (ko)
CA (1) CA1179492A (ko)
DD (1) DD201705A5 (ko)
DE (1) DE3172449D1 (ko)
ES (1) ES8304623A1 (ko)
IN (1) IN155570B (ko)
SU (1) SU1123541A3 (ko)
ZA (1) ZA818085B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400233A1 (de) * 1983-01-07 1984-07-12 Elitex, koncern textilního strojírenství, Liberec Verfahren zum spleissen von faserigen gebilden, insbesondere von garnen, und vorrichtung zur durchfuehrung dieses verfahrens auf textilmaschinen

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151270A1 (de) * 1981-12-24 1983-07-07 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum knotenfreien verbinden zweier faeden
JPS5939662A (ja) * 1982-08-27 1984-03-05 Teijin Seiki Co Ltd 糸条の結合装置
IT1218731B (it) * 1983-08-05 1990-04-19 Savio Spa Perfezionamenti al procedimento di giunzione meccanica di fili tessili, nonche' dispositivo adottante tali perfezionamenti
EP0162367B2 (de) * 1984-05-19 1993-08-04 Rieter Ingolstadt Spinnereimaschinenbau AG Verfahren und Vorrichtung zum Vorbereiten eines abgelängten Fadenendes zum Wiederanspinnen einer Offenend-Spinnvorichtung
DE3607206C2 (de) * 1986-03-05 1996-10-31 Schlafhorst & Co W Verfahren und Vorrichtung zum Herstellen einer Spleißverbindung
ES2021390B3 (es) * 1986-06-11 1991-11-01 Carlos Pujol-Isern Procedimiento y dispositivo para anudar dos hilos textiles.
CH670661A5 (ko) * 1987-02-20 1989-06-30 Mesdan Spa
DE3823725A1 (de) * 1987-07-15 1989-01-26 Mesdan Spa Universalverfahren zum aufdrehen, entwirren und oeffnen eines textilgarns und vorrichtung zur durchfuehrung des verfahrens
JPH0527933Y2 (ko) * 1990-11-27 1993-07-16
DE4222662B4 (de) * 1992-07-10 2005-12-08 Saurer Gmbh & Co. Kg Vorrichtung zum Vorbereiten von Fadenenden
FR3037271B1 (fr) * 2015-06-12 2018-01-12 Centre Technique Des Industries Mecaniques Installation de decoupe de couche mince de materiau synthetique

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515172A (en) * 1948-04-30 1950-07-18 Abbott Machine Co Splicing threads
US2790208A (en) * 1954-03-15 1957-04-30 Eastman Kodak Co Method and means for opening crimped continuous filament tow
US3378429A (en) * 1965-01-04 1968-04-16 Branson Instr Method and apparatus for treating material with sonic energy
SE406755B (sv) * 1973-01-19 1979-02-26 Pujol Isern Carlos Sett for skarvning av tradar och forgarn i textilprocesser samt anordning for genomforande av settet
DE2350843C3 (de) * 1973-10-10 1980-03-13 Fritz 7341 Bad Ueberkingen Stahlecker Vorrichtung zum Anspinnen eines Fadens bei einem Offenend-Spinnaggregat
DE2350844A1 (de) * 1973-10-10 1975-04-24 Fritz Stahlecker Vorrichtung zum anspinnen eines fadens bei einem offen-end-spinnaggregat
JPS5343218A (en) * 1976-09-30 1978-04-19 Ishikawajima Kenzai Kogyo Kk Underground tank construction method
US4229935A (en) * 1978-03-21 1980-10-28 Wain John K Joining yarns
JPS55101560A (en) * 1979-01-23 1980-08-02 Murata Mach Ltd Method and apparatus for joining spum yarns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400233A1 (de) * 1983-01-07 1984-07-12 Elitex, koncern textilního strojírenství, Liberec Verfahren zum spleissen von faserigen gebilden, insbesondere von garnen, und vorrichtung zur durchfuehrung dieses verfahrens auf textilmaschinen

Also Published As

Publication number Publication date
KR830007906A (ko) 1983-11-07
DE3172449D1 (en) 1985-10-31
ES507375A0 (es) 1983-03-01
AU541593B1 (en) 1985-01-10
JPS57117470A (en) 1982-07-21
EP0053093A1 (fr) 1982-06-02
ATE15787T1 (de) 1985-10-15
IN155570B (ko) 1985-02-16
BR8107499A (pt) 1982-08-10
SU1123541A3 (ru) 1984-11-07
ZA818085B (en) 1982-10-27
DD201705A5 (de) 1983-08-03
US4406115A (en) 1983-09-27
JPS633820B2 (ko) 1988-01-26
ES8304623A1 (es) 1983-03-01
CA1179492A (fr) 1984-12-18

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