EP0370526B1 - Dispositif pour couper des produits cousus en forme de bandes - Google Patents

Dispositif pour couper des produits cousus en forme de bandes Download PDF

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Publication number
EP0370526B1
EP0370526B1 EP89121761A EP89121761A EP0370526B1 EP 0370526 B1 EP0370526 B1 EP 0370526B1 EP 89121761 A EP89121761 A EP 89121761A EP 89121761 A EP89121761 A EP 89121761A EP 0370526 B1 EP0370526 B1 EP 0370526B1
Authority
EP
European Patent Office
Prior art keywords
cutter plate
cutting
edge
cutter
plates
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
EP89121761A
Other languages
German (de)
English (en)
Other versions
EP0370526A3 (en
EP0370526A2 (fr
Inventor
Helmut Schips
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.)
Schips AG
Original Assignee
Schips 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 Schips AG filed Critical Schips AG
Priority to AT89121761T priority Critical patent/ATE103350T1/de
Publication of EP0370526A2 publication Critical patent/EP0370526A2/fr
Publication of EP0370526A3 publication Critical patent/EP0370526A3/de
Application granted granted Critical
Publication of EP0370526B1 publication Critical patent/EP0370526B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D05B37/06—Cutting devices with oscillating tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only

Definitions

  • the invention relates to a device for cutting band-shaped sewing material on a sewing machine, by means of scissors interacting, power-operated knives, with two knife plates, which are each formed with two knife edges and can be pressed against one another on a holder and at the same time are arranged in a mutually oppositely linear manner.
  • Devices for cutting band-shaped sewing material on a sewing machine are known, which are based on the principle of scissors and in which a cutting edge can be pivoted about a fixed axis of rotation. Cutting strips made of materials that are difficult to cut, such as rubber, with the help of such scissors is difficult because of the instability of the pivotable cutting edge, which increases with the distance from the axis of rotation, and is often not possible. This instability generally represents a severe restriction on the securely cut through width of a band-shaped sewing material.
  • the stationary knife plate has a rectangular opening, two cutters being formed by its horizontal lower edge and its horizontal upper edge.
  • the sliding knife plate has an oblique double cutting edge.
  • the object of the invention is to provide a generic device which avoids the disadvantages of the known scissors and by means of which even difficult-to-cut strip materials can be cut.
  • the device according to the invention is characterized in that the two cutter plates each have, at the upper end, viewed in the operating position, a beak-like extension separated from their base part by a trapezoidal incision, with one cutter plate having the inclined lower edge of the beak-like one Approach and the opposite horizontal edge of the trapezoidal incision of this knife plate is each designed as a cutting edge, while the other knife plate each has a cutting edge both on the horizontal upper edge and on the sloping lower edge of its beak-like extension.
  • the double-edged cutter plates which interact with one another in the manner of a "guillotine", permit each cutting movement to be carried out with each relative movement, irrespective of the direction of movement, and thus to double the working speed of the cutting device compared to known, relevant apparatuses. Due to the greatly increased stability of the cutting device, it is also possible to cut bard-shaped sewing material made of material that can be cut and / or with a considerably larger width. By forming two knife edges per knife plate, a double service life of the cutting device can also be achieved, which means a significant advantage in terms of maintenance by sharpening the knife edges.
  • the cutting device according to the invention also represents a space-saving solution with regard to the attachment to a sewing machine.
  • the cutting device shown in FIG. 1 has two cutter plates 1 and 2 with essentially the same size. These are each formed with two knife edges 1.1, 1.2 and 2.1, 2.2 and can be pressed against one another on a holder 3 and, at the same time, are arranged so as to be linearly displaceable in relation to one another (cf. also FIGS. 2 and 3). They have an essentially square shape. Their arrangement on the holder 3 is such that after they are attached to a sewing machine N they assume a vertical position and at the same time are positioned transversely to the material feed, the direction of which is indicated by the arrow B (see FIG. 1).
  • the knife plates 1, 2 also have at their upper end, seen in said operating position, a beak-like attachment 1.3, 2.3, each of which is separated from the base part 1.5, 2.5 by a trapezoidal cut 1.4, 2.4 in the knife plates 1, 2 .
  • the two knife edges 1.1, 1.2 of the one knife plate 1 are formed on the inclined lower edge of its beak-like attachment 1.3 and the horizontal edge thereof opposite the trapezoidal cut 1.4 thereof.
  • the two cutter edges 2.1, 2.2 are located on the horizontal upper and the inclined lower edge of their beak-like attachment 2.3. 2, the cutting edge 1.2 of the cutting tip 1 is covered by the cutting edge 2.1 of the cutting tip 2.
  • the holder 3 of the cutting device is composed of a carrier 3.1 receiving the knife plates 1, 2, a carrier 3.1 fastened to the latter and actuating one of the two knife plates 1, 2, namely the displaceable knife plate 2, and a holding plate 3.3 (cf. . 1) together.
  • Carrier 3.1 and drive 3.2 are anchored in place on the holding plate 3.3 and can be attached to a sewing machine N.
  • a pressure cylinder can expediently be used as the drive 3.2.
  • drives of a different type could also be used.
  • the assignment of the two knife plates 1, 2 to one another is made such that when the movable knife plate 2 is lifted upwards, the cutting edge 2.1 on the horizontal upper edge of its beak-like attachment 2.3 each with the cutting edge 1.1 on the sloping lower edge of the beak-like extension 1.3 of the stationary knife plate 1 and during the downward stroke of the movable knife plate 2 Cutting edge 2.2 on the sloping lower edge of its beak-like attachment 2.3 each interacts with the cutting edge 1.2 on the horizontal edge of the trapezoidal incision 1.4 of the stationary cutter plate 1 (cf. in particular FIGS. 2 and 3).
  • the movable knife plate 2 is illustrated in its lower end position.
  • a nut screw 4 with a resilient washer 4.1 is provided on the surface of the displaceable knife plate 2 facing away from the stationary knife plate 1 (cf. FIG. 2). It interacts to adjust the cutting pressure during the cutting process with one end of a screw bolt 4.2 passing through the two cutter plates 1, 2, the other end of which is displaceably guided in the fixed cutter plate 1 simultaneously with the respective cutting process.
  • FIG 1 also schematically illustrates the presser foot F of an overlocking sewing machine N for holding down the material to be processed and contours of other parts of the same sewing machine-N for the purpose of better understanding the invention.
  • a pneumatic pressure line 6 can be laid particularly advantageously on the side of the fixed knife plate 1 facing away from the displaceable knife plate 2, which has at least one nozzle 6.1 fastened in the vicinity of the trapezoidal cut 1.4 of said knife plate 1 supplied with compressed air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (9)

  1. Dispositif pour couper des produits cousus en forme de bandes, sur une machine à coudre, au moyen de lames actionnables mécaniquement, coopérant à la façon de ciseaux, avec deux plaques lames (1,2), réalisées chacune avec deux tranchants de lame (1.1, 1.2; 2.1, 2.2) et disposées sur une fixation (3), de façon à pouvoir presser l'une contre l'autre et, simultanément, être déplacées linéairement l'une par rapport à l'autre en sens inverse, caractérisé en ce que les deux plaques lames (1, 2) présentent à leurs extrémités supérieures, en observant en position de fonctionnement, pour chacune un appendice (1.3, 2.3) en forme de bec, séparé de leur partie de base (1.5, 2.5) au moyen d'une entaille (1.4, 2.4) trapézoïdale, l'arête inférieure, qui s'étend obliquement pour l'une (1) des plaques lames, de l'appendice (1.3) en forme de bec et l'arête horizontale, lui faisant face, de l'entaille (1.4) trapézoïdale de cette plaque lame (1) étant chacune réalisées sous forme d'un tranchant (1.1, 1.2), tandis que l'autre plaque lame (2) présente un tranchant (2.1, 2.2), tant sur l'arête supérieure horizontale qu'également sur l'arête inférieure oblique de son appendice (2.3) en forme de bec.
  2. Dispositif selon la revendication 1, caractérisé en ce que les plaques lames (1, 2) présentent une forme sensiblement tétragonale et sont portées sur la fixation (3) de manière que, après montage de ces dernières sur une machine à coudre (N), elles prennent une position verticale et en même temps soient orientées perpendiculairement par rapport à la direction B (de l'avance du produit cousu).
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que la fixation (3) est composée d'un support (3.1) pour recevoir les deux plaques lames (1, 2), d'un entraînement (3.2), ancré également sur le support (3.1), pour assurer l'actionnement de l'une des deux plaques lames (1,2), notamment la plaque lame (2) déplaçable, et d'une plaque de fixation (3.3), sur laquelle le support (3.1) et l'entraînement (3.2) sont disposés localement fixes et qui peut être montée sur une machine à coudre (N).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par l'association mutuelle des deux plaques lames (1,2), de sorte que, lors de la course de montée de la plaque lame (2) déplaçable, le tranchant (2.1) situé sur l'arête supérieure horizontale de son appendice (2.3) en forme de bec coopère chaque fois avec le tranchant (1.1) situé sur l'arête inférieure oblique de l'appendice (1.3) en forme de bec de la plaque lame (1) localement fixe et, lors de la course de descente de la plaque lame (2) déplaçable, le tranchant (2.2) situé sur l'arête inférieure oblique de son appendice (2.3) en forme de bec coopère chaque fois avec le tranchant (1.2) situé sur l'arête horizontale de l'entaille (2.4) trapézoïdale de la plaque lame (1) localement fixe.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que, sur la face opposée à la plaque lame (1), localement fixe, de la plaque lame (2) déplaçable, est prévue un ensemble vis et écrou (4), avec une rondelle (4.1) élastique qui coopère avec une extrémité d'un bouton fileté (4.2) traversant les deux plaques lames (1, 2), bouton fileté (4.2) dont l'autre extrémité est reçue dans la plaque lame (1) localement fixe, d'une manière déplaçable lors du processus de coupe, ceci pour assurer le réglage de la pression de découpe à laquelle les deux plaques lames (1, 2) sont pressées l'un contre l'autre lors du processus de découpe.
  6. Dispositif selon la revendication 5, caractérisé par un évidement (1.6) sans fenêtre, non traversant, qui est usiné dans la face, opposée à la plaque lame (2) déplaçable, de la plaque lame (1) localement fixe, avec les faces longitudinales (1.6.1) s'étendant verticalement en position de fonctionnement et une fente (1.6.3) traversée au centre de son fond (1.6.2) parallèlement aux faces longitudinales (1.6.1), fente destinée au bouton fileté (4.2) produisant la pression et à un autre boulon (3.2.2), qui forme une partie de la liaison d'actionnement (3.2.1) entre la plaque lame (2) déplaçable et son entraînement (3.2).
  7. Dispositif selon la revendication 6, caractérisé en ce que les deux boulons (3.2.2, 4.2) sont reçus dans un chariot (5) déplaçable conjointement avec la plaque lame (2) déplaçable et pouvant être guidé alors, à l'aide de quatre galets (5.1), sur le fond (1.6.2) de l'évidement (1.6) en fenêtre le long de ses faces longitudinales (1.6.1).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par une conduite à pression (6) pneumatique, installée sur le côté, opposé à la plaque lame (2) déplaçable, de la plaque lame (1) localement fixe, et reliée au moins à une buse (6.1) disposée à proximité de l'entaille (1.4) trapézoïdale de cette dernière.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que la pointe de l'appendice (1.3, 2.3) en forme de bec est reliée rigidement chaque fois par une entretoise à la partie de base (1.5, 2.5) de la plaque lame (1,2).
EP89121761A 1988-11-25 1989-11-24 Dispositif pour couper des produits cousus en forme de bandes Expired - Lifetime EP0370526B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121761T ATE103350T1 (de) 1988-11-25 1989-11-24 Vorrichtung zum schneiden bandfoermigen naehgutes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4388/88A CH679162A5 (fr) 1988-11-25 1988-11-25
CH4388/88 1988-11-25

Publications (3)

Publication Number Publication Date
EP0370526A2 EP0370526A2 (fr) 1990-05-30
EP0370526A3 EP0370526A3 (en) 1990-12-05
EP0370526B1 true EP0370526B1 (fr) 1994-03-23

Family

ID=4275191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121761A Expired - Lifetime EP0370526B1 (fr) 1988-11-25 1989-11-24 Dispositif pour couper des produits cousus en forme de bandes

Country Status (6)

Country Link
US (1) US5052317A (fr)
EP (1) EP0370526B1 (fr)
JP (1) JP2698456B2 (fr)
AT (1) ATE103350T1 (fr)
CH (1) CH679162A5 (fr)
DE (1) DE58907288D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2901777B2 (ja) * 1991-03-28 1999-06-07 大日本スクリーン製造株式会社 走査型露光装置
US6435066B1 (en) 1997-12-18 2002-08-20 Springs Window Fashions Division, Inc. Cutting apparatus for window covering and methods therefor
US7918150B2 (en) * 1999-07-23 2011-04-05 Shade-O-Matic Limited Blind cut down machine
US7017459B2 (en) * 1999-07-23 2006-03-28 Shade-O-Matic Limited Blind cut down machine
DE19959091A1 (de) * 1999-12-08 2001-06-21 Schips Ag Naehautomation Tueba Vorrichtung zum Schneiden bandförmigen Nähgutes
US20090038161A1 (en) * 2007-08-09 2009-02-12 Illinois Tool Works Inc. Device for cutting continuously moving zipper
JP6360361B2 (ja) * 2014-06-11 2018-07-18 Juki株式会社 オーバーロックミシン
WO2019071097A1 (fr) * 2017-10-06 2019-04-11 Hamer-Fischbein Llc Mécanismes de réglage de longueur de point de couture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1065941A (en) * 1912-11-25 1913-07-01 John Holtzmann Strip-cutting attachment for sewing-machines.
JPS5244072A (en) * 1975-10-03 1977-04-06 Mitsubishi Heavy Ind Ltd Method for processing waste from stock farm
JPS5418630A (en) * 1977-07-13 1979-02-10 Fujitsu Ltd Character isolating process system
IT1162776B (it) * 1979-09-20 1987-04-01 Rockwell Rimoldi Spa Coltello separatore provvisto di protezione e blocco specialmente per macchine per cucire
DE3339421A1 (de) * 1982-10-29 1984-05-03 Juki Co. Ltd., Tokyo Overlocknaehmaschine mit einer einrichtung zum einstellen der schlingenbreite
DE3426283A1 (de) * 1984-07-17 1986-01-23 WEDA Roland Werner GmbH, 7410 Reutlingen Vorrichtung zum abschneiden von an einer naehmaschine anfallenden genaehten baendern
JPS63281681A (ja) * 1987-05-13 1988-11-18 シグマ精機株式会社 表示リボンの縫着方法及び縫着装置

Also Published As

Publication number Publication date
JP2698456B2 (ja) 1998-01-19
ATE103350T1 (de) 1994-04-15
EP0370526A3 (en) 1990-12-05
EP0370526A2 (fr) 1990-05-30
JPH02200864A (ja) 1990-08-09
US5052317A (en) 1991-10-01
DE58907288D1 (de) 1994-04-28
CH679162A5 (fr) 1991-12-31

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