EP0666351A1 - Procédé et dispositif pour broder sur une machine à broder à navettes - Google Patents

Procédé et dispositif pour broder sur une machine à broder à navettes Download PDF

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Publication number
EP0666351A1
EP0666351A1 EP94117733A EP94117733A EP0666351A1 EP 0666351 A1 EP0666351 A1 EP 0666351A1 EP 94117733 A EP94117733 A EP 94117733A EP 94117733 A EP94117733 A EP 94117733A EP 0666351 A1 EP0666351 A1 EP 0666351A1
Authority
EP
European Patent Office
Prior art keywords
thread
needle
embroidery
shuttle
delivery unit
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
EP94117733A
Other languages
German (de)
English (en)
Other versions
EP0666351B1 (fr
Inventor
Jürg Dr. Henz
Hans Abegglen
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.)
OC Oerlikon Textile Holding AG
Original Assignee
Saurer Sticksysteme AG
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=6509409&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0666351(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Saurer Sticksysteme AG filed Critical Saurer Sticksysteme AG
Publication of EP0666351A1 publication Critical patent/EP0666351A1/fr
Application granted granted Critical
Publication of EP0666351B1 publication Critical patent/EP0666351B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/02—Machine needles
    • D05C11/06—Needle-driving or control mechanisms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/04—Devices for inserting needles

Definitions

  • the invention relates to a method for embroidering with a shuttle embroidery machine according to the preamble of claim 1 and an apparatus for carrying out this method according to the preamble of claim 3.
  • each thread loops around a role assigned to it, which engages with a brake shaft common to all embroidery points and which are decoupled from this brake shaft when the embroidery point in question is switched off can.
  • Such an arrangement is known for example from DE-PS 34 16 266.
  • the thread guides are arranged, which supply the thread quantity for loop formation and pull it back again. Furthermore, the type of movement of the thread conductors after the formation of a stitch creates a deficiency in the needle thread, which must be deliberately brought about in order to build up tension in the needle threads, which leads to a rotational movement of the rollers and the brake shaft and thus to a specific one Lots of needle thread leads. At the same time, the stitch formed is tightened with this thread tension in the needle thread. Braking the shaft is necessary in order to prevent the rollers and the shaft from running out in an uncontrolled manner, and thus to prevent an excessive amount of thread from being dispensed.
  • a major disadvantage of this design is that the amount of thread supplied is insufficiently accurate, because the tension built up in the needle threads and thus the roll rotation depends on the thread consumption due to the formation of the previous stitch. As a result, the tightening tension with which the stitch formed is tightened is not constant, which results in unevenness in the embroidery pattern.
  • the tensions in the needle threads increase further, which in turn results in an increase in thread breaks and a deterioration in the embroidery pattern.
  • the tension in the needle threads increases more and more with increasing machine speed because the thread roller has to be moved in ever shorter times.
  • the mode of operation of the device specified in this publication is limited to emulating the embroidery process as is known from conventional shuttle embroidery machines according to DE-PS 34 16 266.
  • the method is also based on building up a thread tension in the needle thread during the process.
  • EP-PS 0 014 897 teaches that by turning the roller back after the stitch formation, the stitch formed is tightened by tensioning the needle thread (page 4, column 6, lines 25 to 28). This process in turn leads to tensions in the needle threads, which limit the working speed and result in the occurrence of thread breaks.
  • a needle thread length of about 100 millimeters has to be supplied from the roller and pulled back again for each stitch, which requires the use of thread stores in front of the roller and additional means which prevent the threads from uncontrollably being wrapped around by the threads if they are included run onto the roller at high speed and are released again by the roller.
  • the present invention is based on the object of specifying an embroidery method in which there are no longer any thread tensions which limit the working speed.
  • the thread guide and the delivery unit provide as much thread for each working needle as is required for the penetration of the needle into the fabric to be embroidered, for the formation of a needle thread loop and for the passage of the boat through this loop, as well as the amount of thread that is required remains on the embroidery after the stitch is formed.
  • This total amount of thread is supplied by the thread guide and thread delivery unit in such a way that thread tension never occurs in the needle thread.
  • the needle thread remains stretched throughout the stitch formation, but always free of tension.
  • An essential feature of the invention is that the stitch formed is then tightened by the pulling force of the shuttle thread. Through this type of tightening the stitch formed, the needle thread remains tension-free even in this phase of the embroidery process.
  • the thread delivery unit and the thread guide in such a way that the thread conductor has that thread quantity supplies that is required for the penetration of the needle into the fabric to be embroidered, for the formation of a needle thread loop and for the passage of the boat through this loop, while the thread delivery unit supplies the amount of thread that remains on the fabric after stitch formation.
  • the quantities of the thread portions to be delivered by the two elements thread guide and thread delivery unit are selected in such a way that thread tension can never occur in the needle thread.
  • the needle thread remains stretched throughout the stitch formation, but always free of tension.
  • the stitch formed is then tightened solely by the pulling force of the shuttle thread and the needle thread remains tension-free even during the phase of the embroidery process in which the stitch is tightened.
  • the thread delivery unit as a long motor-driven shaft, over which the threads of several embroidery points run.
  • a thread roll is assigned to each thread, which conveys the thread between itself and the shaft by friction.
  • This arrangement enables the needle threads to be inserted very easily and quickly on the embroidery machine because the time-consuming looping of a brake roller with the threads is eliminated.
  • a stationary deflection point as a thread monitor in the thread course from the thread delivery unit to the needle.
  • the thread monitor checks for the presence of the needle thread and, if it is missing, initiates a shutdown of the embroidery machine.
  • the risk of breakage is very low due to the lack of thread tension in the needle thread, the use of thread monitors is useful for detecting empty needle thread bobbins or shuttle thread bobbins.
  • the embroidery machine 1 has an embroidery frame 2, in which the fabric 3 to be embroidered is clamped.
  • the embroidery material frame 2 can, as usual, be displaced in the directions 4 and 5 perpendicular to the plane of the material to produce the pattern.
  • a control unit 6 controls the movements of the embroidery material frame 2 and of the motor 8, which drives the thread feed roller 7 in the direction 12.
  • Each embroidery point 42 is assigned a thread roll 9 which is rotatably mounted on a lever 10.
  • the lever 10 is mounted on the pivot point 11, so that the thread roll 9 is lifted off the roller 7 by pivoting the lever 10 in the direction 13 and by pivoting the Lever 10 in the direction 14 of the needle thread 35 between the thread roller 9 and the thread roller 7 is clamped by the action of the spring 15. In this position, the needle thread 35 is withdrawn from the bobbin 16 by rotation of the thread roller 7 and fed to the embroidery site.
  • the control unit 6 also drives the thread guide 17, the needle carriers 22 and the shuttle 25 via drives (not shown).
  • the thread guide is pivoted about the pivot point 18 in the directions 19 and 20.
  • the needle carrier 22 carries the needle 21, which is guided in the direction 23 into the fabric 3 and in the direction 24 out of this.
  • the shuttle 25 is slidably mounted on the shuttle carrier 26 in the directions 27 and 28. Between thread roller 7 and thread conductor 17, needle thread 35 loops around a stationary deflection point 29, which is designed as thread monitor 30.
  • 3a shows the start of stitch formation with the needle 21 which has penetrated into the fabric 3 and which enters the needle channel 33 through the stitch hole 31 in the embroidery plate 32.
  • a brief movement of the needle 21 in the direction 24 creates a needle thread loop 43 between the needle eye 34 and the tap hole 31, through which the shuttle 25 with the shuttle thread 36 is pushed in the further course.
  • the shuttle thread supply is located in the shuttle 25 and exits the shuttle 40 from the opening 40 when an adjustable tensile force is applied.
  • the needle eye 34 of the needle 21 enters the substance 3 at the new puncture point 39.
  • the shuttle 25 pulls through its further movement in direction 28 by pulling on the shuttle thread 36 in direction 41 the interlacing 37 of needle thread 35 and shuttle thread 36. Due to the multiple deflections of the needle thread at the new puncture point 39 and at the previous puncture point 38, the resulting tension cannot be transferred to that part of the needle thread 35 which lies in front of the needle eye 39 on the front of the fabric 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP94117733A 1994-02-04 1994-11-10 Procédé et dispositif pour broder sur une machine à broder à navettes Expired - Lifetime EP0666351B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4403365 1994-02-04
DE4403365A DE4403365A1 (de) 1994-02-04 1994-02-04 Verfahren und Vorrichtung zum Sticken auf einer Schiffchen-Stickmaschine

Publications (2)

Publication Number Publication Date
EP0666351A1 true EP0666351A1 (fr) 1995-08-09
EP0666351B1 EP0666351B1 (fr) 1997-05-07

Family

ID=6509409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117733A Expired - Lifetime EP0666351B1 (fr) 1994-02-04 1994-11-10 Procédé et dispositif pour broder sur une machine à broder à navettes

Country Status (6)

Country Link
EP (1) EP0666351B1 (fr)
JP (1) JPH0835162A (fr)
KR (1) KR950032807A (fr)
AT (1) ATE152789T1 (fr)
DE (2) DE4403365A1 (fr)
TR (1) TR27803A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756031A3 (fr) * 1995-07-26 1997-08-20 Laesser Franz Ag Dispositif guide fil pour machine à broder schiffli
EP0795638A1 (fr) * 1996-03-15 1997-09-17 Franz Lässer AG Procédé et dispositif pour former le point dans une machine à broder Schiffli
EP0906982A3 (fr) * 1997-10-03 2000-01-12 Hiraoka Kogyo Co. Ltd. Machine à broder
EP1160369A1 (fr) * 2000-05-31 2001-12-05 Franz Lässer AG Machine à broder
EP1209273A3 (fr) * 2000-11-21 2003-01-02 Franz Lässer AG Procédé de formation du point dans une machine à broder et machine à broder pour la mise en oeuvre dudit procédé
WO2003002801A1 (fr) * 2001-06-27 2003-01-09 Zsk Stickmaschinen Gmbh Mecanisme d'entrainement du fil commande en fonction de la tension determinee du fil
EP1624100A1 (fr) 2004-08-04 2006-02-08 Lässer AG Bâti pour machine à broder et son utilisation avec une fondation de bâti
CN114481481A (zh) * 2021-06-11 2022-05-13 浙江信胜科技股份有限公司 缝制设备自动线量计算方法及输送系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008214837A (ja) * 2007-02-08 2008-09-18 Miyagi Lace Co Ltd エンブロイダリレースおよびエンブロイダリレース地、ならびにそれらの製造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH96452A (de) * 1922-05-09 1922-10-16 Rogg Bernhard Schiffchenstickmaschine mit Steuerung für Steppstich und Plattstich.
DE401265C (de) * 1924-08-30 Vogtlaendische Maschinenfabrik Einrichtung zur Erzielung eines gleichmaessigen Fadenanzuges bei Stickmaschinen
US3460495A (en) * 1967-05-29 1969-08-12 Walter L Cobb Method for embroidering tufts
DE3416266A1 (de) * 1983-06-16 1984-12-20 Aktiengesellschaft Adolph Saurer, Arbon Schaltbare bremseinrichtung fuer die faeden einer stickmaschine
CH669414A5 (fr) * 1985-03-02 1989-03-15 Motema Textilmaschinen Ges Mbh

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT370144B (de) * 1979-02-20 1983-03-10 August Heinzle Einrichtung zur zufuehrung und zum nachziehen des fadens an textilmaschinen
US4308812A (en) * 1980-03-17 1982-01-05 Harry Lenson Embroidery machine having improved thread supply system
DD213705A1 (de) * 1983-02-23 1984-09-19 Plauener Spitze Veb Fadenspann- und waechtervorrichtung fuer stickmaschinen
CH679050A5 (fr) * 1987-10-31 1991-12-13 Juki Kk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE401265C (de) * 1924-08-30 Vogtlaendische Maschinenfabrik Einrichtung zur Erzielung eines gleichmaessigen Fadenanzuges bei Stickmaschinen
CH96452A (de) * 1922-05-09 1922-10-16 Rogg Bernhard Schiffchenstickmaschine mit Steuerung für Steppstich und Plattstich.
US3460495A (en) * 1967-05-29 1969-08-12 Walter L Cobb Method for embroidering tufts
DE3416266A1 (de) * 1983-06-16 1984-12-20 Aktiengesellschaft Adolph Saurer, Arbon Schaltbare bremseinrichtung fuer die faeden einer stickmaschine
CH669414A5 (fr) * 1985-03-02 1989-03-15 Motema Textilmaschinen Ges Mbh

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756031A3 (fr) * 1995-07-26 1997-08-20 Laesser Franz Ag Dispositif guide fil pour machine à broder schiffli
EP0795638A1 (fr) * 1996-03-15 1997-09-17 Franz Lässer AG Procédé et dispositif pour former le point dans une machine à broder Schiffli
EP0906982A3 (fr) * 1997-10-03 2000-01-12 Hiraoka Kogyo Co. Ltd. Machine à broder
EP1160369A1 (fr) * 2000-05-31 2001-12-05 Franz Lässer AG Machine à broder
EP1209273A3 (fr) * 2000-11-21 2003-01-02 Franz Lässer AG Procédé de formation du point dans une machine à broder et machine à broder pour la mise en oeuvre dudit procédé
WO2003002801A1 (fr) * 2001-06-27 2003-01-09 Zsk Stickmaschinen Gmbh Mecanisme d'entrainement du fil commande en fonction de la tension determinee du fil
DE10130345A1 (de) * 2001-06-27 2003-01-09 Zsk Stickmasch Gmbh In Abhängigkeit von der Fadenspannung angesteuerter Fadenantriebsmechanismus
EP1624100A1 (fr) 2004-08-04 2006-02-08 Lässer AG Bâti pour machine à broder et son utilisation avec une fondation de bâti
CN114481481A (zh) * 2021-06-11 2022-05-13 浙江信胜科技股份有限公司 缝制设备自动线量计算方法及输送系统
CN114481481B (zh) * 2021-06-11 2023-08-15 浙江信胜科技股份有限公司 缝制设备自动线量计算方法及输送系统

Also Published As

Publication number Publication date
EP0666351B1 (fr) 1997-05-07
ATE152789T1 (de) 1997-05-15
DE59402665D1 (de) 1997-06-12
DE4403365A1 (de) 1995-08-10
TR27803A (tr) 1995-08-29
KR950032807A (ko) 1995-12-22
JPH0835162A (ja) 1996-02-06

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