EP0666352A1 - Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder - Google Patents

Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder Download PDF

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Publication number
EP0666352A1
EP0666352A1 EP94101750A EP94101750A EP0666352A1 EP 0666352 A1 EP0666352 A1 EP 0666352A1 EP 94101750 A EP94101750 A EP 94101750A EP 94101750 A EP94101750 A EP 94101750A EP 0666352 A1 EP0666352 A1 EP 0666352A1
Authority
EP
European Patent Office
Prior art keywords
thread
needle
fabric
shuttle
clamping element
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
EP94101750A
Other languages
German (de)
English (en)
Other versions
EP0666352B1 (fr
Inventor
Jürg Dr. Henz
Max Schreiber
Riccardo Furlan
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
Application filed by Saurer Sticksysteme AG filed Critical Saurer Sticksysteme AG
Priority to DE59403642T priority Critical patent/DE59403642D1/de
Priority to EP94101750A priority patent/EP0666352B1/fr
Priority to AT94101750T priority patent/ATE156531T1/de
Publication of EP0666352A1 publication Critical patent/EP0666352A1/fr
Application granted granted Critical
Publication of EP0666352B1 publication Critical patent/EP0666352B1/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
    • D05C11/20—Arrangements for cutting the needle or lower threads

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • the invention is based on an embroidery machine, which essentially consists of a front clamping element, in front of which an embroidery needle with a needle thread is movably arranged. Furthermore, the front clamping element is arranged in front of a needle plate, in front of which the fabric to be embroidered is slidably arranged. Behind the fabric, ie beyond the fabric to be embroidered, the rear clamping element is arranged, behind which in turn the movable shuttle with the associated shuttle thread is located.
  • a so-called front clamping element in which the thread is clamped. After clamping, the needle thread is cut between the clamp and the fabric.
  • a cutting element is used, which can be part of the clamping element or an independent element. After the needle thread has been cut, there is the problem of re-stitching. The disadvantage here is that the cut thread end of the needle thread protrudes relatively long from the fabric.
  • the invention has for its object to propose a method with which it is possible to produce any short thread ends that are flush with the fabric even in extreme cases or alternatively the thread end entirely to disappear from the front of the embroidery.
  • the method is characterized by the features of claim 1.
  • An essential feature of the invention is that a method is now proposed with which it is possible to produce thread ends of any desired length, so that no difficulties arise when re-stitching. There is now no longer any risk that the thread end will be embroidered into the fabric in subsequent embroidery processes and there is no longer any need to cut off such a thread end in a subsequent shearing process, with the risk of damaging the embroidery image consists.
  • the shuttle thread is used in order to enable, after a loop formation by pulling on the shuttle thread, that this shuttle thread pulls the needle thread backwards through the entry point of this needle thread in the fabric, so that the thread end is closed as desired shorten.
  • the shuttle thread has either not been cut off and still attached to the fabric, or has been cut to a sufficient length but not clamped, the length of the thread being sufficient to nevertheless cause the needle and shuttle thread to be entangled.
  • the present invention provides several options, the first being the thread end from the entry point in the fabric (short) looks out, while in a second embodiment it is provided that the thread end of the needle thread is pulled completely through the entry point in the fabric, so that no thread end is formed on the front of the fabric.
  • the method according to the invention can be used for all large embroidery machines in which boats are used, it being irrelevant whether the processing direction, the direction of movement of the embroidery needle, is horizontal or vertical.
  • the shuttle movement is exerted in order to exert a corresponding pull on the shuttle thread, so that the necessary pull on the needle thread and thus also via the interlacing point which exists between the shuttle thread and the needle thread to exercise on the thread end of the needle thread.
  • a movement of the shuttle is carried out perpendicular to the plane of the fabric in order to exert the appropriate tension on the shuttle thread, in order to in turn exert the required tension on the thread end of the front thread via the interlacing point between the shuttle thread and the needle thread.
  • all of the shuttle carriers with their shuttle can be pulled back together perpendicular to the fabric plane. This so-called “opening of the rear carriage” is normally used when the embroidered fabric is removed from the machine and a new fabric is attached. This movement can also be used to apply traction to the shuttle thread.
  • Such a constructive solution is that you also provide a thread element, which, for. B. is a hook element which engages the shuttle thread and which exerts a pull on the shuttle thread in order to shorten it, so as to also act on the interlacing between the two threads with tension over the tensioned shuttle thread, so as to also remove the thread end of the Shorten the needle thread.
  • a thread element which, for. B. is a hook element which engages the shuttle thread and which exerts a pull on the shuttle thread in order to shorten it, so as to also act on the interlacing between the two threads with tension over the tensioned shuttle thread, so as to also remove the thread end of the Shorten the needle thread.
  • a corresponding thread pulling element acts on the needle thread, specifically when the intertwining between the needle thread and the shuttle thread is formed, in order to likewise pull the thread Exercise needle thread and pull the thread end out of the entry point of the thread end in the fabric, so as to shorten the thread end in any way.
  • three different construction elements are encompassed by the present invention, namely using the movement of the shuttle in a parallel or perpendicular direction to the fabric in combination with a fabric transport in order to shorten the shuttle thread and thus shorten the thread end of the needle thread.
  • the material transport can take place as described, but instead of the movement of the boat with exerting a tension on the boat thread, additional thread catching or gripping elements can be provided which exert the tension on the boat thread.
  • the tension is not exerted on the shuttle thread via a thread catching or gripping element, but on the needle thread.
  • the latter two embodiments can optionally be combined with a mass transfer.
  • the fabric can also stand still and instead the corresponding catching element can come into operation in order to achieve the desired shortening of the thread end of the needle thread.
  • the previously mentioned exemplary embodiments therefore have in common that either a pull is exerted on the shuttle thread, in order to shorten the intertwining between the shuttle thread and the needle thread to reach the thread end of the needle thread.
  • the second-mentioned exemplary embodiments relate to the fact that an additional thread catching or gripping element is used in order to let it either pull on the shuttle thread or on the needle thread.
  • the clamping elements have an integrated cutting device. However, it is also included in the invention if the clamping and cutting elements are arranged independently of one another.
  • FIG. 1 and 2 schematically show an embroidery site of a shuttle embroidery machine, a shuttle 2 being driven to be movable on the shuttle carrier 1 in the arrow directions 3, 4.
  • a needle plate 6 is fastened to the carrier, on which a fabric 7 is arranged to be vertically and horizontally displaceable.
  • a front clamping element 8 with an integrated cutting device, in front of which an embroidery needle 10 is in turn driven in the arrow directions 47, 48, through which a needle thread 11 can be inserted into an entry point 12 in the fabric 7.
  • a needle channel 15 is provided in the shuttle carrier 1, which ensures that the embroidery needle 10 can penetrate the fabric 7 far enough.
  • FIG. 2 it can still be seen that a rear clamping element 14 with integrated cutting device is arranged on a carrier 5 below the fabric 7.
  • the tap hole 13 can also be seen in the stitch plate 6.
  • the shuttle 2 has an exit point 16 for a shuttle thread 44 (see FIG. 15).
  • FIGS. 3 and 4 The front clamping element 8 is shown in FIGS. 3 and 4 in two different functional positions.
  • FIG. 3 shows the clamping position, it being possible to see that a movable knife 18 is slidably disposed over a fixed knife 17 and the fixed knife 17 carries a clamping spring 19, the front tip 21 of which is designed as a clamping element in order to clamp the needle thread 11 in certain process states.
  • FIG. 4 shows the release position of the front clamping element when it is not in the clamping position.
  • the movable knife 18 is moved in the direction of arrow 22 relative to the fixed knife 17. This exposes the clamping area 20, which is otherwise covered by the tip 21 of the clamping spring 19.
  • the front part of the movable knife 18 has a recess 9 through which the cutting and clamping action takes place.
  • FIGS. 5 to 14 Various process sequences of the arrangement mentioned are shown in more detail in FIGS. 5 to 14.
  • FIG. 5 it is shown that the front clamping element 8 is in the clamping position and that in the transition from FIG. 5 to FIG. 7 it is moved forward in the direction of arrow 23 against the fabric 7, with a sideways movement in the direction of arrow 24 (FIG. 6) at the same time. takes place.
  • the clamping element 8 holds the needle thread 11 clamped and executes the movements mentioned in the arrow directions 23, 24.
  • FIGS. 7 and 8 show the end position of this movement, the clamping element occupying position 8a and being closest to the material 7. The needle thread 11 is still clamped here.
  • FIGS. 11 and 12 it can be seen that the end of the needle thread 11 is on the back of the fabric 25 of the fabric 7, the end of the thread 52 being pulled through the entry point 12 in the fabric 7 and being on the back of the fabric 25.
  • the clamping element 8 was opened at the same time, the movable knife 18 not carrying out a cutting operation, but only released the clamping point by the movement in the direction of the arrow 22. The clamped thread end 52 of the needle thread 11 has thus been released.
  • FIGS. 13 and 14 show the final sequence of this movement, namely that the front clamping element in position 8d moves away from the fabric 7 and that the thread end 52 is thus on the back of the fabric 25 of the fabric 7 and no longer protrudes beyond the front of the fabric 7 , which was felt to be disadvantageous in the sense of the present invention.
  • FIGS. 15 to 18 show various functional states of the rear clamping element 14 with an integrated cutting device.
  • the rear clamping element 14 consists essentially from the carrier 5, the carrier head 33 of which is part of the carrier 5, the carrier head 33 being approximately hook-shaped and defining an approximately C-shaped recess 34.
  • a clamping wheel carrier 35 is rotatably held in a bearing 43, a clamping wheel 31 being rotatably held in a rotating bearing 45 in the clamping wheel carrier 35.
  • a pressure piece 32 is supported on the one hand on the carrier head 33 and on the other hand on the clamping wheel carrier 35 so as to exert a spring pressure on the clamping gap 36 which is formed on the one hand between the outer circumference of the clamping wheel 31 and on the other hand between an assigned surface of the carrier 5.
  • a movable knife 39 and an associated thread insert 29 are driven by means of a drive rod 26.
  • the movable knife 39 is articulated on the drive rod 26 by means of a first articulation point 27, a second pivot point 28 being formed on the carrier 5.
  • a fixed knife 40 is also arranged on the carrier 5.
  • a passage opening 37, through which the thread can pass, is arranged in the carrier 5 adjacent to the clamping gap 36.
  • the thread insert 29 has an insert opening 30 which inserts the thread into the clamping gap 36.
  • a cutting action takes place between the cutting edge 41 of the fixed knife 40 and the cutting edge 42 of the movable knife 39.
  • FIG. 15 shows that the shuttle thread 44 reaches through the insertion opening 30 and runs past the fabric side of the clamping element 14. This position is the normal working position or basic position, in which the shuttle thread 44 is not clamped and is not cut.
  • FIG. 16 shows that the thread insert 29 has pivoted in the direction of the arrow 38, as a result of which the shuttle thread 44 has been guided into the clamping gap 36 and clamped there. At the same time, the shuttle thread 44 was cut by the cutting device arranged on the other side, consisting of the fixed knife 40 and the movable knife 39.
  • FIG. 17 shows the position of the movable knife 39 after the cut
  • FIG. 18 shows the basic position of the movable knife 39, which has consequently moved over the clamping gap 36.
  • FIG. 19 shows how the needle thread 11 is clamped by the front clamping element 8 (position 8b) and the shuttle 2 is in its upper position.
  • the boat 2 was already here by the Needle thread 11 formed loop 54 pushed upward in the direction of arrow 3, whereby the shuttle thread 44 simultaneously forms a loop 46, the two loops 46 and 54 interlocking and getting caught.
  • FIG. 20 shows a further process sequence following FIG. 19, where it can be seen that the shuttle 2 moves downward in the direction of arrow 4 and at the same time the shuttle thread 44 forming the loop 46 is tightened, although the entry point 12 is still in the fabric 7 is in alignment opposite the stitch hole 13 in the stitch plate 6. This means that the fabric 7 has not yet been transported in the transport direction. There is thus only an initial pull between the two loops 46, 54 without a substantial pulling action being exerted on the thread end 52 of the needle thread 11 still clamped in the front clamping element 8. This clamping of the needle thread 11 is still important in this process state, because this is the only way to ensure that the thread end 52 is held in a defined position in the clamping element 8.
  • FIG. 21 it can be seen that the front clamping element 8 has released the thread end 52 of the needle thread 11, while one end of the shuttle thread 44 is still held in the clamping point 49 by the rear clamping element 14. With simultaneous backward movement of the shuttle 2 in the direction of arrow 4, a tension is thus exerted on the interlacing point 51 between the loop 46 and the loop 54 of the needle thread 11 via the shuttle thread 44 and its loop 46, whereby the thread end 52 is pulled through the entry point 12 in the arrow direction 53 becomes.
  • the clamping point 49 corresponds to the clamping gap 36 in the rear clamping element 14.
  • FIG. 22 it can be seen that a further return movement of the shuttle 2 in the direction of arrow 4 exerts an even stronger pull on the shuttle thread 44 and the associated loop 46, as a result of which the thread end 52 is shortened even further.
  • the thread end 52 can be shortened further by removing the material 7 in the arrow direction 50 with its entry point 12 from the tap hole 13, thereby further shortening the two intertwined threads 11, 44 are and thereby a further tension is exerted on the thread end 52, whereby this moves into the position shown in Figure 22.
  • the method described has the advantage that it is now possible to produce thread ends of the needle thread of any length on a fabric, and this thread end can even be pulled through the fabric.
  • the main advantage of this is that the thread end of the needle thread no longer has to be sheared off, that this thread end does not interfere when the stitching is started again, and that overall a clean embroidery image is generated.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Automatic Embroidering For Embroidered Or Tufted Products (AREA)
EP94101750A 1994-02-05 1994-02-05 Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder Expired - Lifetime EP0666352B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59403642T DE59403642D1 (de) 1994-02-05 1994-02-05 Verfahren zum Ansticken der Nadel- und Schiffchenfäden am Stoff einer Stickmaschine
EP94101750A EP0666352B1 (fr) 1994-02-05 1994-02-05 Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder
AT94101750T ATE156531T1 (de) 1994-02-05 1994-02-05 Verfahren zum ansticken der nadel- und schiffchenfäden am stoff einer stickmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94101750A EP0666352B1 (fr) 1994-02-05 1994-02-05 Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder

Publications (2)

Publication Number Publication Date
EP0666352A1 true EP0666352A1 (fr) 1995-08-09
EP0666352B1 EP0666352B1 (fr) 1997-08-06

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ID=8215657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101750A Expired - Lifetime EP0666352B1 (fr) 1994-02-05 1994-02-05 Procédé pour reprendre la broderie du fil d'aiguille et du fil de la navette sur un tissu dans une machine à broder

Country Status (3)

Country Link
EP (1) EP0666352B1 (fr)
AT (1) ATE156531T1 (fr)
DE (1) DE59403642D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0768418A1 (fr) * 1995-10-16 1997-04-16 Franz Lässer AG Machine à broder, en particulier de type Schiffli, avec un dispositif pour sectionner et pincer le fil de face
DE102008019467A1 (de) * 2008-04-18 2009-10-29 Oerlikon Saurer Arbon Ag Verfahren zum Betrieb einer Stickmaschine mit schlaufenformenden Element und Stickmaschine nach dem Verfahren
TWI696736B (zh) * 2016-05-03 2020-06-21 瑞士商拉瑟股份公司 用於致動切線及夾線裝置以將大繡花機上的梭線剪斷的方法以及用於致動該切線佈置以執行此方法的裝置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226828C (fr) *
US2649065A (en) * 1948-12-07 1953-08-18 Electrotext Corp Embroidery machine and coded-tape control means
JPS6059161A (ja) * 1983-09-06 1985-04-05 宮本株式会社 自動ミシンに於ける糸端の処理法
FR2588288A1 (fr) * 1985-10-07 1987-04-10 Absorba Poron Procede pour ravaler le bout de fil libre d'une aiguille de machine a coudre
FR2588577A1 (fr) * 1985-10-11 1987-04-17 Absorba Poron Procede pour ravaler le bout de fil libre de l'aiguille d'une machine a coudre et machine pour la mise en oeuvre du procede
EP0468892A1 (fr) * 1990-07-26 1992-01-29 Societe Textile Industrielle Sotexi Dispositif coupe-fils pour machines à coudre multi-aiguilles
JPH055263A (ja) * 1991-06-24 1993-01-14 Barudan Co Ltd 飛び柄縫い等の縫製時における糸処理方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226828C (fr) *
US2649065A (en) * 1948-12-07 1953-08-18 Electrotext Corp Embroidery machine and coded-tape control means
JPS6059161A (ja) * 1983-09-06 1985-04-05 宮本株式会社 自動ミシンに於ける糸端の処理法
FR2588288A1 (fr) * 1985-10-07 1987-04-10 Absorba Poron Procede pour ravaler le bout de fil libre d'une aiguille de machine a coudre
FR2588577A1 (fr) * 1985-10-11 1987-04-17 Absorba Poron Procede pour ravaler le bout de fil libre de l'aiguille d'une machine a coudre et machine pour la mise en oeuvre du procede
EP0468892A1 (fr) * 1990-07-26 1992-01-29 Societe Textile Industrielle Sotexi Dispositif coupe-fils pour machines à coudre multi-aiguilles
JPH055263A (ja) * 1991-06-24 1993-01-14 Barudan Co Ltd 飛び柄縫い等の縫製時における糸処理方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8520, Derwent World Patents Index; Class F, AN 85119219 *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 266 (C - 1062) 25 May 1993 (1993-05-25) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0768418A1 (fr) * 1995-10-16 1997-04-16 Franz Lässer AG Machine à broder, en particulier de type Schiffli, avec un dispositif pour sectionner et pincer le fil de face
DE102008019467A1 (de) * 2008-04-18 2009-10-29 Oerlikon Saurer Arbon Ag Verfahren zum Betrieb einer Stickmaschine mit schlaufenformenden Element und Stickmaschine nach dem Verfahren
DE102008019467B4 (de) * 2008-04-18 2012-01-19 Oerlikon Saurer Arbon Ag Verfahren zum Betrieb einer Stickmaschine mit schlaufenformenden Element und Stickmaschine nach dem Verfahren
TWI696736B (zh) * 2016-05-03 2020-06-21 瑞士商拉瑟股份公司 用於致動切線及夾線裝置以將大繡花機上的梭線剪斷的方法以及用於致動該切線佈置以執行此方法的裝置

Also Published As

Publication number Publication date
ATE156531T1 (de) 1997-08-15
DE59403642D1 (de) 1997-09-11
EP0666352B1 (fr) 1997-08-06

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