EP0874776B1 - Method and device for yarn fusion - Google Patents

Method and device for yarn fusion Download PDF

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Publication number
EP0874776B1
EP0874776B1 EP97923401A EP97923401A EP0874776B1 EP 0874776 B1 EP0874776 B1 EP 0874776B1 EP 97923401 A EP97923401 A EP 97923401A EP 97923401 A EP97923401 A EP 97923401A EP 0874776 B1 EP0874776 B1 EP 0874776B1
Authority
EP
European Patent Office
Prior art keywords
yarn
yarns
unit
storage unit
processing machine
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
EP97923401A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0874776A2 (en
Inventor
Tetsuo Maruyama
Satoshi Wakisaka
Mitsutoshi Nagata
Akira Nojiri
Hiroshi Aoyama
Hiroshi Ichikawa
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.)
Ichikawa Iron Works Company Ltd
Du Pont Toray Co Ltd
Toray Engineering Co Ltd
Ichikawa Iron Works Co Ltd
EIDP Inc
Original Assignee
Ichikawa Iron Works Company Ltd
Du Pont Toray Co Ltd
Toray Engineering Co Ltd
Ichikawa Iron Works Co Ltd
EI Du Pont de Nemours and Co
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 Ichikawa Iron Works Company Ltd, Du Pont Toray Co Ltd, Toray Engineering Co Ltd, Ichikawa Iron Works Co Ltd, EI Du Pont de Nemours and Co filed Critical Ichikawa Iron Works Company Ltd
Publication of EP0874776A2 publication Critical patent/EP0874776A2/en
Application granted granted Critical
Publication of EP0874776B1 publication Critical patent/EP0874776B1/en
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
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/08—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by welding
    • 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
    • B65H2701/319—Elastic threads

Definitions

  • This invention pertains to a method and device for bonding yarns in a process for feeding yarns from wound packages to a yarn processing machine. More particularly, this invention pertains to a method and device for bonding yarns in the course of feeding yarn from wound packages to a continuously fed yarn processing machine.
  • the yarns are synthetic fiber monofilaments, synthetic fiber elastic yarns, or fine ribbons of synthetic resin films
  • a portion of the yarn is stretched and becomes finer during the connecting operation, leading to a decrease in the strength.
  • knots may, disadvantageously, become loose due to the characteristic frictional force, elastic force, etc., of the yarns.
  • Japanese Kokoku Patent No. Sho 46[1971]-14584 proposed the following method and device: two yarns are overlapped inside a groove having a receiving table with a nearly hemispherical shape; the two yarns are then pressed by a plunger having a fine tip that can be inserted into the groove, while ultrasonic vibrations are applied to fuse the yarns.
  • a device for bonding yarns is known from DE-A-2 450 018.
  • the purpose of the present invention is to provide a method and device for bonding yarns, which enables the yarns to be fused reliably, even when they are thick yarns, and which allows reduction of the size of the fused portion, whereby the downstream yarn-processing can be performed continnously.
  • this invention provides a method of bonding yarns according to claim 1.
  • a second aspect of this invention provides a device for bonding yarns in a system for feeding a first yarn from a first wound package then a second yarn from a second wound package to a continuously fed yarn processing machine according to claim 3.
  • Figure 1 is a schematic front view illustrating one embodiment of the yarn bonding device of this invention.
  • Figure 2 is a plane view of the embodiment shown in Figure 1.
  • Figure 3 is an enlarged front view of the support unit (2) and thermal fusing unit (3) shown in Figure 1.
  • Figure 4 is a side view corresponding to Figure 3.
  • Figure 5 is a plane view corresponding to Figure 3.
  • Figure 6 is a schematic oblique view illustrating the state of yarns for preparation of fusion.
  • FIG 1 is a schematic front view illustrating one embodiment of the present device for bonding yarns.
  • Figure 2 is its plane view.
  • This yarn bonding device contains the following parts: a releasing unit (1), which feeds the yarns at a prescribed speed; a support unit (2), which supports the yarns in such a manner that a projection of the second yarn crosses the first yarn; a thermal fusing unit (3), which heats and fuses the crossed portion of the yarns; and a storage unit (4) which stores a prescribed amount of yarn needed for bonding the yarns without interrupting the continuous feed of yarn to the processing equipment.
  • Releasing unit (1) consists of the following parts: first rollers (6), (7) and second rollers (8), (9), which are installed on frame (5) in a freely rotating manner through bearings (10); driver (11), which drives said first rollers (6) and (7) in the same direction; and driver (12) which drives second rollers (8) and (9).
  • Wound package (100) set on first rollers (6) and (7) and wound package (101) set on second rollers (8) and (9) are rotated, respectively, so that first yarn (110) and second yarn (111) are fed out at a prescribed speed.
  • Said drivers (11) and (12) transmit the rotation of the motor to said rollers (6-9) by means of sprockets, chains, pulleys, belts, and other rotation-transmitting parts.
  • the rotating speed is controlled by a common inverter (not shown in the figure).
  • the releasing unit (1) may be either the friction-driving type, which rotates the package by means of supporting rollers, or the direct-driving type, which has spindles for fastening the package installed in a freely rotating manner on a frame and rotated by the motor.
  • guiding means (13), which makes the first yarn (110) run horizontally, and support means (14) which supports the second yarn (111) in a position such that a projection of second yarn (111) crosses the first yarn (110), are set on table (15) near thermal fusing unit (3).
  • Guiding means. (13) comprises first guide (16), second guide (18) and grooved roller (20).
  • First guide (16) is situated near thermal fusing unit (3) and installed on table (15) by means of a bracket.
  • Second guide (18) is installed by means of bracket (19) on table (15) such that it is on the same line as first guide (16) and thermal fusing unit (3); and thermal fusing unit (3) is located between first guide (16) and second guide (18).
  • Grooved roller (20) is set near said second guide (18), located in-line with said guides (16) and (18), and installed in a freely rotating manner by means of bracket (21) on table (15).
  • Said first guide (16) comprises guide portion (16a), which defines the horizontal movement of first yarn (110); and support portion (16b) which supports preparatory second yarn (111) such that it does not contact running first yarn (110).
  • second yarn (111) falls into guide portion (16a) as said yarn continues running.
  • Support means (14) contains holding part (22), and third guide (23).
  • Holding part (22) holds the end of yarn (111) and moves from the yarn engaging preparation position to the fusion position perpendicular to first yarn (110).
  • Third guide (23) is set such that it is collinear with thermal fusing unit (3) and holding part (22) when the holding part is in the fusion position, and thermal fusing unit (3) is located between holding part (22) and third guide (23).
  • Said holding part (22) comprises a holding plate (25) and a rotating lever (27) each attached to bracket (26), which rotates around rod (24).
  • Holding plate (25) is installed on bracket (26), rotating lever (27) protrudes from bracket (26), and rod (24) protrudes from table (15) in the direction perpendicular to the top surface of table (15).
  • Third guide (23) comprises: bracket (30), which is attached to the piston rod of cylinder (28) installed on table (15); and guide (29) installed on said bracket (30).
  • Guide (29) supports second yarn (111) at a position above first yarn (110) before completion of fusion. After completion of fusion it is lowered, and second yarn (111) is released from the U-shaped guiding groove of guide (29).
  • Thermal fusing unit (3) comprises: lower heating part installed on table (15); and upper heating part (32), which can be raised to the standby position and lowered to the fusing position.
  • Said lower heating part (31) comprises lower heating body (33), circular shaped pressing plate (34) and knife (35).
  • Lower heating body (33) is installed on table (15) and contains an induction coil, resistor, or other heating body (not shown in the figure).
  • Circular shaped pressing plate (34) has a flat pressing face (34a) and is attached to the tip of lower heating body (33).
  • Knife (35) is installed on peripheral surface (33b) of the tip of lower heating body (33).
  • Upper heating body (32) comprises: bracket (36), installed in a freely lifting manner on said rod (24); cylinder (38), installed on frame body (37) set on table (15) and having a piston rod connected to bracket (36); cylindrical body (39), installed integrally on said bracket (36); upper heating body (40), containing an induction coil, resistor, or other heating body (not shown in the figure), installed in a freely movable manner inside the cylinder; spring (41), which presses said upper heating body (40) by a prescribed force; pressing plate (42), installed on tip portion (40a) of upper heating body (40) and having a flat pressing surface (42a); and knife (43), installed on peripheral surface (39a) of the tip of cylindrical body (39).
  • Pressing plates (34) and (42) can be made of ceramics, Teflon® resin (E. I. du Pont de Nemours and Company registered trademark for fluoropolymers), and other like materials, having high heat resistance and high flaking resistance.
  • Teflon® resin is preferred.
  • Knives (35) and (43) may have an arc-shaped blade that can simultaneously cut two yarns positioned about 90° to each other, or they may be flat plate-shaped blades set corresponding to the yarns, respectively.
  • the blade of upper knife (35) and the blade of lower knife (43) fit each other as in a guillotine.
  • Said knives (35) and (43) are heated to the prescribed temperature by heating bodies (33) and (40), so that the yarns are cut by both the blades and heat.
  • the heating bodies that is, said lower heating body (33) and upper heating body (40), are connected to the power feed cable (not shown in the figure), and are heated to a preset temperature.
  • a stopping means (44) for the running yarns is set between said thermal fusing unit (3) and second yarn guide (18).
  • Said stopping means (44) comprises the following parts: receiving table (45) which is installed on table (15) and positioned lower than the running route of the yarns; cylinder (46) which is installed on table (15) by frame (47); and holding plate (48), which is installed on the piston rod of said cylinder (46) and, together with the upper face of receiving table (45), holds the yarns.
  • Each cylinder (28), (38), and (46) may be an electromagnetic cylinder or a hydraulic cylinder.
  • storage unit (4) comprises: a movable storage means (50) installed in a freely lifting manner on column (49); stationary storage means (51) installed at a prescribed position on column (49); and lifting means (52) for movable storage means (50).
  • Storage unit (4) can be used for continuously feeding the yarns without stopping the yarn processing equipment (not shown in the figure) by absorbing, or compensating for, the difference in speed between the yarn processing equipment (not shown in the figure) and releasing unit (1) during yarn fusion.
  • Movable storage means (50) comprises: frame (53) which is installed in a freely movable manner on the guide (not shown-in the figure) formed on column (49); grooved roller (54) which is installed in a freely rotating manner on said frame (53); and driver (55) for rotating grooved roller (54) on frame (53).
  • Stationary storage means (51) comprises: frame (56) which is installed on column (49); grooved roller (57) which is installed in a freely rotating manner on said frame (56); and driver (58) for rotating grooved rollers (57) on frame (56).
  • Drivers (55) and (58) are made of driving motors and rotation-transmitting parts; they rotate grooved rollers (54) and (57) at the prescribed speeds, respectively.
  • the rotation-transmitting parts are made of pulleys, belts or sprockets, and chains. Rollers (54) and (57) and the pulleys of the rotation-transmitting parts can be connected integrally to form a forced driving configuration. Alternatively, grooved rollers (54) and (57) may be connected to the pulleys of the rotation-transmitting parts in a freely rotating manner, and the rotation transmitted by means of the friction resistance force of the rotary portion.
  • Each of the grooved rollers (20), (54), and (57) is made of a lightweight material such as synthetic resin or aluminum.
  • Lifting means (52) comprises: motor (59) with sprocket (60) attached to its output shaft; sprocket (61) installed in a freely rotating manner on the upper end of column (49); chain (62), stretched on sprockets (60) and (61), with end connected to frame (53) of movable storage means (50); and balancing weight(63), connected by chain or rope (not shown in the figure) so that frame (53) can be hoisted.
  • Lifting means (52) can lift movable storage means (50) at the prescribed speed.
  • Grooved rollers (54) of said movable storage means (50) and grooved rollers (57) of stationary storage means (51) are positioned so that they alternate with each other, no roller (54) being in-line vertically with a roller (57).
  • running yarn (110) is picked up by grooved rollers (54) and is in a stored in a meandering, zig-zag manner.
  • cylinders (28), (38), (46), drivers (11), (12), (55), (58) and motor (59) perform operations upon receiving signals from a control device (not shown in the figure) having input function, memory function, comparing function, operation instruction function, etc.
  • the knives Prior to cutting the yarns, the knives can be heated to a prescribed temperature by the respective heating body.
  • elastic yarns without rigidity are severed by melting from the heat of the heated knife, and synthetic fibers and other yarns with rigidity are severed by the blade of the knife.
  • operation instruction signals are sent to drivers (55), (58) and motor (59) of storage unit (4), respectively, and grooved rollers (54) and (57) are rotated at a prescribed speed, while movable storage means (50) is raised at a prescribed speed, and yarn (111) is stored.

Landscapes

  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Coiling Of Filamentary Materials In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP97923401A 1996-01-19 1997-01-21 Method and device for yarn fusion Expired - Lifetime EP0874776B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2604696 1996-01-19
JP2604696A JPH09194142A (ja) 1996-01-19 1996-01-19 糸状物の溶着方法および装置
JP26046/96 1996-01-19
PCT/US1997/002494 WO1997028079A2 (en) 1996-01-19 1997-01-21 Method and device for yarn fusion

Publications (2)

Publication Number Publication Date
EP0874776A2 EP0874776A2 (en) 1998-11-04
EP0874776B1 true EP0874776B1 (en) 2001-10-24

Family

ID=12182763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97923401A Expired - Lifetime EP0874776B1 (en) 1996-01-19 1997-01-21 Method and device for yarn fusion

Country Status (4)

Country Link
EP (1) EP0874776B1 (ja)
JP (1) JPH09194142A (ja)
DE (1) DE69707640T2 (ja)
WO (1) WO1997028079A2 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5887322A (en) * 1998-04-02 1999-03-30 E. I. Du Pont De Nemours And Company Apparatus for splicing threadlines
US6672045B2 (en) * 2001-03-23 2004-01-06 E. I. Du Pont De Nemours And Company Apparatus and method for splicing threadlines by knot-induced thread twist entanglement
EP1686086A1 (de) * 2005-01-28 2006-08-02 Schärer Schweiter Mettler AG Vorlagespulenwechselverfahren und Vorrichtung
DE102006013063A1 (de) * 2005-11-07 2007-05-16 Kuempers Gmbh & Co Kg Verfahren und Vorrichtung zur Herstellung textiler Armierungen für technische Erzeugnisse
CN108560121A (zh) * 2018-07-02 2018-09-21 衡东县中湖包装有限公司 一种编织袋生产线的断丝快速修复装置
DE102018116795B4 (de) * 2018-07-11 2020-06-04 Kurt Seume Spezialmaschinenbau Gmbh Vorrichtung zur Herstellung von Werkstücken
KR200490812Y1 (ko) * 2019-07-24 2020-01-08 (주)디엠텍코리아 피도금체의 텐션을 일정하게 유지하면서 도금하는 도금장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450018A1 (de) * 1974-10-22 1976-04-29 Ahaus Textil Ag Vorrichtung zum verbinden der enden von garnen aus thermoplastischen faeden durch verschweissen
WO1996012112A1 (en) * 1994-10-13 1996-04-25 Eastman Chemical Company Method and apparatus for forming splices in flexible, fusible material and material spliced accordingly

Also Published As

Publication number Publication date
DE69707640T2 (de) 2002-08-01
EP0874776A2 (en) 1998-11-04
JPH09194142A (ja) 1997-07-29
DE69707640D1 (de) 2001-11-29
WO1997028079A3 (en) 1997-10-16
WO1997028079A2 (en) 1997-08-07

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