EP0425503A1 - Surjeteuse pour former un surjet a plusieurs fils. - Google Patents

Surjeteuse pour former un surjet a plusieurs fils.

Info

Publication number
EP0425503A1
EP0425503A1 EP89906103A EP89906103A EP0425503A1 EP 0425503 A1 EP0425503 A1 EP 0425503A1 EP 89906103 A EP89906103 A EP 89906103A EP 89906103 A EP89906103 A EP 89906103A EP 0425503 A1 EP0425503 A1 EP 0425503A1
Authority
EP
European Patent Office
Prior art keywords
thread
looper
needle
overlock
hook
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
EP89906103A
Other languages
German (de)
English (en)
Other versions
EP0425503B1 (fr
Inventor
Helmar Holl
Guenter Meier
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.)
GM Pfaff AG
Original Assignee
Pfaff Haushaltsmaschinen GmbH
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
Priority claimed from DE3824152A external-priority patent/DE3824152C1/de
Application filed by Pfaff Haushaltsmaschinen GmbH filed Critical Pfaff Haushaltsmaschinen GmbH
Publication of EP0425503A1 publication Critical patent/EP0425503A1/fr
Application granted granted Critical
Publication of EP0425503B1 publication Critical patent/EP0425503B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating

Definitions

  • stitch type 514 which consists of two needle threads, a looper thread and one
  • stitch type 512 can be formed in which the one from the The most distant needle thread is linked only with the lower looper thread in the sewing material, while with the other needle thread the looper thread and overlock hook thread are linked in the workpiece and the latter are intertwined at the edge of the workpiece.
  • the invention has for its object to design a generic Uberwelichnähmaschine so that several types of stitch can be sewn with minimal conversion effort.
  • the approach characterized in claim 1 eliminates the need to re-thread or re-thread any thread when stitch types 512 and 514 are alternately sewn. All that is required is to move the overlock gripper from one working position to the other
  • Stitch type 504 can also be produced, as in the prior art, by removing one needle.
  • the measure according to claim 4 facilitates handling when changing from one stitch type to the other.
  • the measures marked in claim 6 extend the area of application of the overlock sewing machine by the possibility of sewing stitch type 502.
  • Catch tip according to claim 6 and the training according to claim 8 serves to facilitate the changeover of this gripper when changing from the rest position to the working position and vice versa.
  • the seam combination overlock seam and double chain stitch seam combines a high elongation with high seam tensile strength.
  • the overlock seam of stitch type 503 is too narrow for the processing of knitted and warp-knitted goods to adequately secure the edges of the fabric layers.
  • each overlock seam to be formed with the means of claims 1 - 8 is supplemented by a double chain stitch seam of stitch type 401 to achieve a higher strength of the connection and a higher load capacity, so that the existing possibilities of formation different stitch types can be expanded.
  • FIG. 4 shows a diagram of stitch type 512
  • Fig. 5 is a view similar to FIG. 2 in a position of the thread-guiding overlock gripper to form the stitch type 514 shown in FIG. 7;
  • 21 shows stitch type 504 together with stitch type 401.
  • the leg 20 of the gripper carrier 19 has a shoulder 31, in which two V-shaped locking grooves 32, 33 are provided for a spring clip 34, which rests with its legs 35, 36 on the end face of the guide rod 14 and the one corresponding to the underside Grooves for the legs 35, 36 of the spring clip 34 having the clamping disc 37 is assigned.
  • a handle 38 is provided for moving the gripper carrier 19 from one to the other of the working positions of the overlocking gripper 24 fastened in the gripper carrier 19 and determined by the spring clip 34 in connection with the locking grooves 32, 33.
  • the needle drive lever 102 is fastened on the oscillating shaft 101, the fork-shaped end 103 of which is connected to that on the handlebar 104 by a link 104
  • Needle bar 105 attached needle bar pin 106 is pivotally connected.
  • the needle bar 105 can be moved up and down in bearing bushes 107, 108 fixed to the housing, as indicated by arrow 109, FIG. 12.
  • a needle holder 110 is fastened, in which three thread-guiding needles 111, 112, 113 are inserted and fastened.
  • the needle 113 is laterally offset from and arranged in front of the needles 112, 113 arranged in a line transverse to the material feed direction.
  • a thread-guiding lower hook 114 and a thread-guiding overlock gripper 115 work with the needles 111, 112 and a thread-guiding double chain pin gripper 116 works with the needle 113.
  • the bottom gripper 114 is fastened in a gripper holder 118 clamped on the oscillating shaft 117 and carries out an oscillating movement in accordance with the arrow 119.
  • the overlock gripper guide rod 120 which is longitudinally displaceably guided in a rotary sliding joint 121, is driven by an oscillating shaft 122 via a drive lever 123, which is connected in an articulated manner to the lower fork-shaped end 124 of the guide rod 120.
  • the upper end of the guide rod 120 is reduced in diameter, as can be seen in FIGS. 12, 13 and 16.
  • An angular gripper carrier 125 which has a longitudinal slot 127 in its one leg 126, is placed on the end of the guide rods 120.
  • a bore is provided for the passage of the shaft 129 of the overhang gripper 115, in which it is fastened with a screw 130.
  • the overlock gripper 115 has a thread eyelet 132 in the vicinity of its catching tip 131, which is provided by a
  • Double chain stitch, stitch type 401 Double chain stitch, stitch type 401.
  • the overlocking looper thread 63 which comes from a thread supply 20 through the thread bore 27 and the thread groove 28 is fed, in which a solution is threaded through the thread eyelet 30 and the looper carrier 19 is brought into its retracted, first working position shown in FIGS. 2 and 3, in which the spring clip 34 in
  • the stitch type 504 can be formed by removing the right needle 5 with the hook carrier 19 of the overlock gripper 24 in the second working position or by omitting the left needle 6 with the hook carrier 19 and the overlocking hook 24 in the first working position.
  • stitch type 512 according to DIN 61400, US Federal Standard Catalog No. 751, which consists of the needle threads 154, 155, the lower looper thread 156 and the overlock hook thread 157, the looper carrier 125 with the overlock hook thread 157 leading the overlock hook 115 into the 13 and 14 shown in the first working position, in which the spring clip 140 is engaged in the locking groove 139 and the thread eyelet 132 of the over hook gripper 115 is located during the so-called racking, based on FIGS. 13 and 14, between the movement paths of the two needles 111 and 112.
  • the stitch formation takes place in such a way that the lower gripper 114 during the forward movement into the
  • the lower looper 114 throws off the needle thread loops 158, 159 when it moves back, which are then tightened by the usual thread layer, so that the lower looper thread 156 is linked by the needle threads 154, 155 on the underside of the sewing material.
  • the overlocking looper thread 157 is only linked to the needle thread 154.
  • the gripper carrier 125 with the overlocking gripper 115 only needs the second one

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

La présente invention a pour objectif d'adapter une machine à coudre traditionnelle de manière à ce qu'il suffise d'ajustements minimes pour coudre plusieurs types de points différents. Différentes solutions sont proposées pour passer du point 512 au point 514, comprenant deux fils d'aiguille, un fil de crochet de dessous et un fil de crochet de surjet, et vice versa. Dans une des solutions proposées, le support (19) du crochet de surjet peut être fixé dans une première position de travail, où les deux fils d'aiguille sont enchaînés avec le fil de crochet de surjet, et peut être déplacé vers une seconde position de travail, où seul le fil d'aiguille adjacent à la lisière de la pièce à coudre est enchaîné avec le fil d'aiguille de crochet. Une autre solution consiste à prévoir deux yeux (29, 30) dans le crochet de surjet, à une certaine distance l'un de l'autre, et à faire passer le fil de crochet de surjet dans l'un des yeux pour obtenir l'un des types de point et dans l'autre oeil pour obtenir l'autre type de point. On peut également obtenir le type de point 504, comportant trois fils, en enlevant une des aiguilles. Pour obtenir le type de point 502, comportant un fil d'aiguille et un fil de crochet de dessous, sans fil de crochet de surjet, on a prévu sur le support de pince un crochet de surjet (41) avec une pointe de retenue (44) fourchue, qui est mobile entre une position de repos et une position opérationnelle, où la pointe de retenue de la pince de surjet constitue une prolongation de la branche de la fourche de la pointe de retenue de la pince de surjet la moins proche de l'aiguille, qui fait passer le fil de pince de dessous autour de la lisière de la pièce à coudre et le positionnne devant l'aiguille de manière à former la piqûre. Afin de rendre la couture plus résistante à la traction, des outils de couture supplémentaires destinés à former une couture au point de chaînette double du type 401, DIN 61400, US Federal Standard Catalogue No 751, viennent s'ajouter aux outils de couture destinés à former
EP89906103A 1988-07-16 1989-06-01 Surjeteuse pour former un surjet a plusieurs fils Expired - Lifetime EP0425503B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3824152 1988-07-16
DE3824152A DE3824152C1 (en) 1988-07-16 1988-07-16 Overcasting machine for forming a multi-thread overcasting seam
DE3908388A DE3908388C2 (de) 1988-07-16 1989-03-15 Überwendlichnähmaschine
DE3908388 1989-03-15

Publications (2)

Publication Number Publication Date
EP0425503A1 true EP0425503A1 (fr) 1991-05-08
EP0425503B1 EP0425503B1 (fr) 1992-12-09

Family

ID=25870158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89906103A Expired - Lifetime EP0425503B1 (fr) 1988-07-16 1989-06-01 Surjeteuse pour former un surjet a plusieurs fils

Country Status (7)

Country Link
US (1) US5269240A (fr)
EP (1) EP0425503B1 (fr)
JP (1) JP3006841B2 (fr)
KR (1) KR920003254B1 (fr)
DE (1) DE3908388C2 (fr)
ES (1) ES2014753A6 (fr)
WO (1) WO1990000640A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02283398A (ja) * 1989-04-26 1990-11-20 Brother Ind Ltd セラミックス製釜及びその微量給油装置を備えたミシン
AU4072993A (en) * 1992-06-01 1993-12-30 Leena Kaukinen Overlock sewing machine
JP3004860B2 (ja) * 1993-06-08 2000-01-31 ジューキ株式会社 オーバーロックミシンの針糸さばき装置
US5704303A (en) * 1997-02-27 1998-01-06 Tseng; Hsien Chang Sewing machine control mechanism
ITMI20112188A1 (it) * 2011-11-30 2013-05-31 Santoni & C Spa Macchina cucitrice e procedimento per cucire tra loro, mediante tale macchina cucitrice, almeno due lembi di tessuto sovrapposti

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2013849A1 (fr) * 1968-07-27 1970-04-10 Fukutomi Susumu
JPS5225938U (fr) * 1975-08-13 1977-02-23
US4237804A (en) * 1977-08-02 1980-12-09 Juki Co., Ltd. Looper changeover device for an edge stitching sewing machine
US4799439A (en) * 1981-07-14 1989-01-24 Maruzen Sewing Machine Co., Ltd. Double purpose looper for overlocking sewing machine
JPS6025146B2 (ja) * 1982-08-05 1985-06-17 森 勝司 ミシンに取りつけて使用するロツク縫い器
JPS60129079A (ja) * 1983-12-15 1985-07-10 ブラザー工業株式会社 オ−バ−ロツクミシン
IT8422761V0 (it) * 1984-07-31 1984-07-31 Rockwell Rimoldi Spa Crochet superiore forato per punto sopraggitto a tre fili in macchine per cucire.
IT8422764V0 (it) * 1984-07-31 1984-07-31 Rockwell Rimoldi Spa Crochet inferiore di macchina per cucire atta a formare il punto sopraggitto.
IT1186244B (it) * 1985-12-20 1987-11-18 Rockwell Rimoldi Spa Macchina per cucire a piu' aghi del tipo taglia cuce per punto sopraggitto e punto sopragitto realizzato con la detta macchina
DE4000747C1 (en) * 1988-07-16 1991-02-21 Pfaff Haushaltmaschinen Gmbh, 7500 Karlsruhe, De Over-edging machine for forming multi-thread over-edging seam - has tools forming over-edging seams preceded by stitch forming tools forming 2-thread chain stitch on side of each of the seams
US4970976A (en) * 1989-11-24 1990-11-20 Ssmc Inc. Overlock sewing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9000640A1 *

Also Published As

Publication number Publication date
JPH03505982A (ja) 1991-12-26
DE3908388C2 (de) 1996-02-29
KR900702115A (ko) 1990-12-05
ES2014753A6 (es) 1990-07-16
EP0425503B1 (fr) 1992-12-09
KR920003254B1 (ko) 1992-04-25
DE3908388A1 (de) 1990-09-20
WO1990000640A1 (fr) 1990-01-25
US5269240A (en) 1993-12-14
JP3006841B2 (ja) 2000-02-07

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