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EP0020259B1 - Anlage zur linearen Behandlung des kurvenförmigen Randes eines flexiblen Werkstückes, zum Beispiel eines Textilwerkstückes - Google Patents

Anlage zur linearen Behandlung des kurvenförmigen Randes eines flexiblen Werkstückes, zum Beispiel eines Textilwerkstückes Download PDF

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Publication number
EP0020259B1
EP0020259B1 EP80400737A EP80400737A EP0020259B1 EP 0020259 B1 EP0020259 B1 EP 0020259B1 EP 80400737 A EP80400737 A EP 80400737A EP 80400737 A EP80400737 A EP 80400737A EP 0020259 B1 EP0020259 B1 EP 0020259B1
Authority
EP
European Patent Office
Prior art keywords
treatment
piece
axis
point
work
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
Application number
EP80400737A
Other languages
English (en)
French (fr)
Other versions
EP0020259A1 (de
Inventor
Joel Michel Doyen
Jean-Pierre Auguste Raisin
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Publication of EP0020259A1 publication Critical patent/EP0020259A1/de
Application granted granted Critical
Publication of EP0020259B1 publication Critical patent/EP0020259B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/10—Edge guides
    • D05B35/102—Edge guide control systems with edge sensors
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B33/00—Devices incorporated in sewing machines for supplying or removing the work
    • D05B33/006—Feeding workpieces separated from piles, e.g. unstacking
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/05—Magnetic devices
    • D05D2207/06—Permanent magnets
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2209/00—Use of special materials
    • D05D2209/02—Use of special materials transparent
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2303/00—Applied objects or articles
    • D05D2303/02—Tape
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/02—Folding
    • D05D2305/04—Folding longitudinally to the sewing direction

Definitions

  • the refocusing means consist of a carousel movable in rotation above the work table and the frame of the processing machine, this carousel with several pads that can be applied to the part being processed.
  • Such a device is complicated and requires holding the part flat on the work table without wrinkling, during treatment.
  • the invention overcomes these drawbacks and in particular aims to provide an installation of simple design and reduced size.
  • the refocusing means comprise: a part of the working table movable in rotation about an axis which is perpendicular thereto, and motor means controlled by the detection device, rotation of said movable part in a suitable direction according to the presence of the part at said point of the detection zone, whereby the work table is made to fulfill two roles at once: that of support for the part to be treated and that means of refocusing.
  • the axis of rotation of the movable working table part is offset relative to the processing axis.
  • the part of the mobile work table is of annular shape surrounding the treatment point.
  • the mobile working table part is a peripheral peripheral zone of the working table.
  • the part of the mobile work table is of circular shape centered on its axis of rotation.
  • the detection device comprises two means of detectors each detecting the presence of the part in at least one respective detection point placed upstream of said treatment point and offset with respect to the treatment axis, respectively on either side other of this axis, and said motor means are controlled by (each of said detectors) to drive in rotation, in a respective direction, the part of the mobile work table.
  • the detection device is an analog detector extending transversely, with respect to the movement of the part, at least on one side with respect to the processing axis, and the motor means are controlled by said detector to drive in rotation of said movable table part at a speed which is a function of the proportion of surface area of this detector covered by the part being treated.
  • the detection device comprises at least two detectors offset from the sewing axis by a different distance from each other, and the motor means are controlled by each of these detectors to drive the table part mobile with different speeds, the highest speed corresponding to the detector furthest from the processing axis, as soon as the corresponding detector detects the presence of the part.
  • the installation further comprises means for bringing the front point of the curved edge to be treated, to the treatment point, so that the treatment axis is tangent to said edge of said treatment point, these means comprising: a shoe capable of being applied to the part of the part adjacent to the front point of the edge to be treated of the latter, this part being flat on the work table, and drive means for moving said sliding shoe on the work table between two positions between which the skate has pivoted on itself by a suitable angle around an axis perpendicular to the work table.
  • the installation shown is intended to automatically ensure the colleting of a concave selvedge BC or B'C 'of a textile piece such as a piece of male brief 1.
  • This colleting operation consists in depositing a collar (or strip) 2 straddling along said edge BC, B'C '(figs 1 and 1a).
  • concave selvedge means: curved edge of the piece 1, the center (s) of curvature of which is / are located outside of said piece.
  • This installation comprises a sewing machine 3, for example of the type with two needles and a shuttle, this machine being provided, in known manner, with a collet guide 4 ensuring the folding and the good presentation of the collar 2, including the feed is obtained automatically by members (not shown) controlled in synchronism with the movement of the sewing machine 3 (fig. 2).
  • the first operation is provided by specific handling and positioning means described in document EP-A-20 258 in the name of the applicant.
  • These handling means take the pieces 1 stacked approximately in a stack 11, one by one, lay these pieces flat, on a rotary rotary transfer table 12, in a predetermined orientation relative to the sewing axis 6, the table 12 being coplanar at table 9; then these means take up each part 1, after a 180 ° pivoting of the table 12 and take it flat by sliding on the table 12, on a fixed horizontal connection table 13 and on the work table 9 of the machine sew 3 until said piece 1 reaches its predetermined position 100.
  • the sewing axis 6 is the direction in which the drive device 10, 5 drives the area adjacent to point 7, of the piece 1 during sewing.
  • the work table 9 is coplanar with tables 12 and 13 and it is located at point 7, tables 12, 13 and 9 connecting to each other to form a single horizontal sliding plane on which move parts 1.
  • this shape and these dimensions are such that, in the position of sewing start of the piece 1, the point B 'being at 7 and the axis 6 being tangent at B' at the edge B'C ', a part 1b of the piece 1 encroaches on the frame 3a of the machine 3, so that holding the part 1 flat on the work table 9 is no longer possible, the part 1b being necessarily pleated and curved at 14 (fig. 5).
  • the handling and positioning means ensuring positioning 100 on the work table 9 of each piece 1 taken from the approximate stack 11, will not be described in more detail below, the reader being able to refer to the description of the document EP-A-20 258.
  • article 1 cannot always be introduced under the presser foot 5 by a simple translational movement due in particular to the configuration of the frame 3a of the sewing machine, slip 1 being driven back by the frame 3a at the edge C'D 'so that there result folds 14 which compromise the smooth running of the seam, fig. 5.
  • FIGS. 6 and 7 show, respectively, in front view and in top view, an introduction device which ensures the presentation of point B 'of article 1 under the presser foot 5.
  • This device comprises a pad 15 mounted at the lower end of a rod 16a of a jack 16 whose casing 16b is fixed on a support 17.
  • the jack 16 can rotate about its axis relative to the support 17 by means of a toothed wheel 18 integral in rotation with the rod 16a, and to a chain 19 meshing with the wheel 18.
  • the support 17 pivots about an axis 20 by means of a second jack 21.
  • This axis of rotation 20 is constituted by a vertical pivot that the it is possible to move along a slide - or slide - 22 formed in a support plate 23 fixed on the frame 3a of the sewing machine 3.
  • This presentation movement of the pad 15 therefore results from the superposition of two rotations; the apex angle B 'must be introduced in such a way that the first centimeters bB' of the edge B'C 'are aligned with the seam axis 6 (fig. 7).
  • these rotations will be adjusted to more or less deform the part A'B'C' of article 1 (fig. 8).
  • Each type of article 1 requires a presentation and a specific introduction movement depending on the shape of the edge A'B'C '.
  • This point P then makes it possible to determine the pivot point O of the support 17 whose position is located at the intersection of the circles C1 (center P, radius OP) and C2 (center Po, radius OP).
  • the rotation of the shoe 15, which results from the rotary movement of the support 17 under the action of the jack 21, can be adjusted by means of the knurled knob 27.
  • the amplitude of the rotation depends of the position of the nut 25. If we consider the angle A'B'b, the nut must be positioned to rotate the axial direction of the pad 15 by a value equal to - - a, a being the value of the angle A'B'b. 2
  • this introductory pad makes it possible to present all the various articles of current type under the presser foot and this, at the price of two relatively simple adjustments.
  • the sewing machine 3 is also associated with means, known as autoguiding, ensuring the automatic guiding of the part 1 during gluing, this guiding having the effect of keeping the sewing axis 6 tangent to the edge B'C 'at stitch 7.
  • correction detector 28 is, for example, constituted by a photoelectric cell which detects the presence (or absence) of part 1 at point M and which, as will be explained below, checks, during the seam, the position of the edge B'C 'of article 1 relative to the seam axis 6.
  • the mobile table part - or circular autoguiding table - 29 rotates about its axis 29a which, advantageously, is located in the center of the frame 3a seen in plan, of the sewing machine 3.
  • Another detector 32 is placed on the axis 6 immediately upstream of point 7; this detector 32 triggers the start of the movement of the sewing machine 3, as soon as it detects the presence of a piece 1 above it.
  • This detector 32 also controls the stop of this movement when the part 1 is no longer present above it, this stop command being however carried out after a period of time taking into account the distance between point 7 and the detector 32.
  • the autoguiding plate 29 can rotate at two predetermined speeds in order to take into account very pronounced curvatures corresponding to small items; for this purpose, a second correction detector 33 is used, placed at a point M 'of the table 9, this point M' being located at a distance from the axis 6 greater than the point M, this point M 'also being placed upstream of point M relative to the direction of advancement of the part 1 during cutting.
  • this sensor controls the rotation of the autoguiding plate 29 by means of the motor 30, the latter having a rotation speed V1.
  • V1 the rotation speed of the autoguiding plate 29
  • the sewing edge interrupts the light beams of cells 28 and 33 whose positions on the work table have been predetermined according to the pronounced curves.
  • the change of state of the two sensors 28 and 33 controls the rotation of the autoguiding plate 29 at a speed V2 greater than V1. This faster and predetermined correction speed as a function of the position of the sensor 33 therefore makes it possible to obtain better correction.
  • a guide wall 34 is used which is fixed to the circular fixed central part 35 of the table 9 at a distance from the latter slightly greater than the thickness of the pieces 1 to be bonded.
  • the wall 34 can carry one of the elements (light source or light sensor) of the detection devices 28, 32 and 33.
  • mechanical abutment elements such as rollers 36 can be fixed to limit the offset to the right of the edge B'C 'during sewing, before the automatic guide means 28 to 31 and 33 have been able to act.
  • the autoguiding table 29 constitutes a peripheral peripheral zone of the table 9.
  • the detectors 28, 32, 33 are mounted on the fixed central part 25 of the table 9; this central part 25 is connected substantially without significant clearance - or gap - with the mobile part 29.
  • the presentation of the selvedge in the sewing axis is done automatically throughout the sewing thanks to the autoguiding table 29 whose small consecutive rotations allow to bring the selvedge B'C 'in the sewing axis 6.
  • this selvedge is of any curved shape, for example, successively, concave and then convex
  • another embodiment of the installation according to the invention can be used, to guide this selvedge during the sewing operation.
  • This embodiment which is shown in FIG. 10 consists in adding to the photoelectric sensor 28 a second sensor 50.
  • the motor 30 will be rotated in one direction or the other if the two sensors are discovered or hidden, or else this motor will be stopped if the sensors are one discovered and the other hidden.
  • Rotating at different speeds in both directions may, also, be controlled by combining the second sensor 50, an auxiliary sensor '51 acting as the auxiliary sensor 33 and by symmetrically arranging these two auxiliary sensors 51, 33 on either on the other of the axis 6 and of the detection zone thus defined.
  • This sensor 52 extends substantially transversely to the direction of movement of the part 1 and over the entire detection zone, so as to deliver a signal whose sign defines the direction of rotation of the motor 30 and whose amplitude proportional to the edge-to-center distance of the detection zone defines the speed of rotation.
  • a zero signal therefore corresponds to the coverage, by the article, of half the surface of said sensor 52, and a positive or negative signal, to the coverage of a surface respectively less or greater than half of this surface.
  • This means makes it possible to guide the edge of an article having any curvature and, simultaneously, to act on the speed of rotation of the motor.
  • the autoguiding plate 29 is made of transparent material in order to allow the functioning of the detectors 50, 51, 52.

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

Claims (9)

1. Vorrichtung zur linearen Behandlung, beispielsweise zum Nähen, eines nachgiebigen Stücks, wie eines textilen Stücks (1) entlang einer im wesentlichen parallel zu einem Bogenrand (B'C') verlaufenden Linie, mit:
- einer stationären Maschine (3) zur linearen Behandlung mit einem fixen Behandlungspunkt (7);
- einer Führungs- und Antriebseinrichtung (5, 10) zum Bewegen des Stücks (1) über den Behandlungspunkt (7) und zum Verschieben der in Behandlung befindlichen Zone dieses Stücks gegenüber der Behandlungsmaschine (3) gemäss einer vorbestimmten Behandlungsachse (6);
- einem sich um die Antriebseinrichtung (5, 10) erstreckenden Arbeitstisch (9), welcher Tisch im wesentlichen in Höhe des Behandlungspunktes (7) angeordnet und zur Aufnahme des Stücks (1) während dessen Behandlung bestimmt ist;
- einer Korrektureinrichtung mit: einer Randdetektionseinrichtung (28, 50, 52) zum Ermitteln des Vorhandenseins des Stücks in einer oberhalb des Behandlungspunktes (7) angeordneten und zumindest auf einer Seite bezüglich der Behandlungsachse (6) befindlichen Detektionszone des Arbeitstisches, und in Abhängigkeit von der Form des Stücks durch den Detektor gesteuerte Nachzentriermittel (29 bis 31) zum Verschieben des Stücks (1) im wesentlichen quer zur Behandlungsachse (6) und in einer in Abhängigkeit des Vorhandenseins des Stücks auf zumindest einem Punkt (M) der Detektionszone zweckmässigen Richtung, damit das Stück gemäss einer sich im wesentlichen parallel zum Bogenrand (B'C') dieses Stücks erstreckenden Linie durch die Behandlungsmaschine (3) behandelt wird, dadurch gekennzeichnet, dass die Nachzentriermittel folgendes umfassen: einen um eine zu ihm senkrechte Achse (29a) rotationsbeweglichen Arbeitstischteil (29) und von der Detektionseinrichtung (28, 50, 52) gesteuerte Motormittel (30, 31) zum In-Rotation-Versetzen des beweglichen Teils (29) in einer abhängig vom Vorhandensein des Stücks (1) im Punkt (M) der Detektionszone zweckmässigen Richtung, mit der Massgabe, dass dem Arbeitstisch (9) dabei gleichzeitig zwei Rollen zukommen: die der Auflage für das zu behandelnde Stück (1) und die des Nachzentriermittels.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Rotationsachse (29a) des beweglichen Arbeitstischteils (29) gegenüber der Behandlungsachse (6) versetzt ist.
3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass der bewegliche Arbeitstischteil (29) ringförmig ist und den Behandlungspunkt (7) umgibt.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der bewegliche Arbeitstischteil (29) eine marginale Umfangszone des Arbeitstisches (9) ist.
5. Vorrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass der bewegliche Arbeitstischteil (29) kreisförmig und zentrisch um seine Rotationsachse (29a) angeordnet ist.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Detektionseinrichtung zwei Detektionsmittel (28, 50) aufweist, die jeweils das Vorhandensein des Stücks (1) in zumindest einem entsprechenden, oberhalb des Behandlungspunktes (7) und gegenüber der Behandlungsachse (6) bzw. auf beiden Seiten dieser Achse versetzten Detektionspunkt ermitteln, und dass die Motormittel (30, 31) zum In-Rotation-Versetzen des beweglichen Arbeitstischteils (29) in die jeweilige Richtung von den Detektionsmitteln (28, 50) gesteuert sind.
7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Detektionseinrichtung ein Analogdetektor (52) ist, der sich zumindest auf einer Seite der Behandlungsachse (6) quer zur Verschieberichtung des Stücks (1) erstreckt, und dass die Motormittel (30,31) zum In-Rotation-Versetzen des beweglichen Arbeitstischteils (29) mit einer vom Anteil der durch das in Behandlung befindliche Stück bedeckten Oberfläche dieses Detektors (52) abhängigen Geschwindigkeit vom Detektor (52) gesteuert sind.
8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Detektionseinrichtung zumindest zwei gegenüber der Nähachse (6) in einem voneinander unterschiedlichen Abstand versetzte Detektoren (28, 33 oder 50, 51) umfassen, und dass die Motormittel (30, 31) von jedem dieser Detektoren zum Antreiben des beweglichen Arbeitstischteils (29) mit unterschiedlichen Geschwindigkeiten (V1, V2) gesteuert sind, sobald der entsprechende Detektor das Vorhandensein des Stücks (1) ermittelt, wobei die höhere Geschwindigkeit (V2) dem von der Behandlungsachse (6) weiter entfernten Detektor (33, 51) entspricht.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie weiters Mittel zum Befördern des vorderen Punktes (B') des zu behandelnden Bogenrandes (B'C') zum Behandlungspunkt (7) umfasst, so dass die Behandlungsachse (6) an der Stelle des Behandlungspunktes (7) Tangente zum Rand (B'C') ist, welche Mittel eine Kufe (15) umfassen, die auf den neben dem vorderen Punkt (B') des zu behandelnden Randes (B'C') des Stücks befindlichen Teil desselben aufbringbar ist, welcher Teil flach auf dem Arbeitstisch (9) aufliegt, und Antriebsmittel (16 bis 27) zum Verschieben der auf dem Arbeitstisch (9) gleitenden Kufe (15) zwischen zwei Positionen, zwischen denen die Kufe in einem geeigneten Winkel um eine zum Arbeitstisch (9) senkrechte Achse um sich selbst verschwenkt hat.
EP80400737A 1979-05-29 1980-05-27 Anlage zur linearen Behandlung des kurvenförmigen Randes eines flexiblen Werkstückes, zum Beispiel eines Textilwerkstückes Expired EP0020259B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913659 1979-05-29
FR7913659A FR2457920A1 (fr) 1979-05-29 1979-05-29 Installation de traitement lineaire d'un bord courbe d'une piece souple telle qu'une piece textile

Publications (2)

Publication Number Publication Date
EP0020259A1 EP0020259A1 (de) 1980-12-10
EP0020259B1 true EP0020259B1 (de) 1984-08-22

Family

ID=9225973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400737A Expired EP0020259B1 (de) 1979-05-29 1980-05-27 Anlage zur linearen Behandlung des kurvenförmigen Randes eines flexiblen Werkstückes, zum Beispiel eines Textilwerkstückes

Country Status (5)

Country Link
US (1) US4312281A (de)
EP (1) EP0020259B1 (de)
JP (1) JPS55160585A (de)
DE (1) DE3069007D1 (de)
FR (1) FR2457920A1 (de)

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GB2062708B (en) * 1979-09-14 1983-09-07 Amf Inc Means for turning jigs on sewing machines
GB8316899D0 (en) * 1983-06-22 1983-07-27 British United Shoe Machinery Folding machines
US4512269A (en) * 1983-07-19 1985-04-23 The Charles Stark Draper Laboratory, Inc. Automated assembly system for seamed articles
WO1985003956A1 (en) * 1984-03-08 1985-09-12 The Charles Stark Draper Laboratory, Inc. Assembly system for seamed articles
JPS60222085A (ja) * 1984-04-19 1985-11-06 グンゼ株式会社 生地の縫製装置
DE3423239A1 (de) * 1984-06-23 1986-01-02 Helmut Tübach Schips Naehmaschine
US4682553A (en) * 1985-02-21 1987-07-28 Institut Textile De France Sewing machine workpiece edge alignment apparatus
FR2577578B1 (fr) * 1985-02-21 1987-03-20 Inst Textile De France Installation de traitement lineaire d'un bord d'une piece souple telle qu'une piece textile.
FR2585378B2 (fr) * 1985-07-26 1988-01-08 Inst Textile De France Installation perfectionnee de traitement lineaire d'un bord d'une piece souple telle qu'une piece textile
IL76277A (en) * 1985-09-02 1989-08-15 Galram Technology Ind Ltd System for displacing objects
ATE77424T1 (de) * 1987-09-25 1992-07-15 Yaacov Sadeh Naehmaschine mit computer.
US4858906A (en) * 1988-03-21 1989-08-22 The Charles Stark Draper Laboratory, Inc. Method and apparatus for manipulating and transporting limp material
US4836119A (en) * 1988-03-21 1989-06-06 The Charles Stark Draper Laboratory, Inc. Sperical ball positioning apparatus for seamed limp material article assembly system
CN107419442B (zh) * 2017-08-11 2021-01-22 杰克缝纫机股份有限公司 重合缝制装置
CN114059238A (zh) * 2021-11-15 2022-02-18 天津市顺金华机械制造有限公司 一种自由长度吊装带生产流水线

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Publication number Priority date Publication date Assignee Title
DE1302988B (de) *
US3650229A (en) * 1969-07-23 1972-03-21 Ivanhoe Research Corp Feed guide for sheet material
US3611960A (en) * 1970-05-11 1971-10-12 Ivanhoe Research Corp Rotating plate workpiece orienting and point-to-point feeding apparatus
US3693561A (en) * 1970-06-05 1972-09-26 Singer Co Automatic edge guide mechanism for sewing machines
US3742878A (en) * 1970-12-07 1973-07-03 Warnaco Inc Control for sewing machine
US3871306A (en) * 1973-03-12 1975-03-18 Wolverine World Wide Inc Feed control
FR2252008A5 (en) * 1973-10-24 1975-06-13 Inst Textile De France Sewing machine for stitching the curved edge of a work-piece - has adjusting device for moving edge transversely of the line of stitching
US4100864A (en) * 1977-01-17 1978-07-18 Usm Corporation Automatic work guidance mechanism
FR2392909A1 (fr) * 1977-06-03 1978-12-29 Inst Textile De France Installation de guidage automatique d'un article devant un point de travail

Also Published As

Publication number Publication date
JPS6331237B2 (de) 1988-06-22
JPS55160585A (en) 1980-12-13
DE3069007D1 (en) 1984-09-27
FR2457920B1 (de) 1984-03-02
US4312281A (en) 1982-01-26
FR2457920A1 (fr) 1980-12-26
EP0020259A1 (de) 1980-12-10

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