EP0338909A1 - Werkstückzuführung zu einer Nähmaschine - Google Patents

Werkstückzuführung zu einer Nähmaschine Download PDF

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Publication number
EP0338909A1
EP0338909A1 EP89401059A EP89401059A EP0338909A1 EP 0338909 A1 EP0338909 A1 EP 0338909A1 EP 89401059 A EP89401059 A EP 89401059A EP 89401059 A EP89401059 A EP 89401059A EP 0338909 A1 EP0338909 A1 EP 0338909A1
Authority
EP
European Patent Office
Prior art keywords
shoe
station
sewing
stop
sewing machine
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.)
Withdrawn
Application number
EP89401059A
Other languages
English (en)
French (fr)
Inventor
Francis Bécard
Jacques Pion
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.)
Institut Francais Textile et Habillement
Original Assignee
Institut Francais Textile et Habillement
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 Institut Francais Textile et Habillement filed Critical Institut Francais Textile et Habillement
Publication of EP0338909A1 publication Critical patent/EP0338909A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for

Definitions

  • the present invention relates to the automatic feeding of a sewing machine from a part positioned at a first work station, and therefore the transfer of this part from the first station to under the presser foot of the sewing machine by sliding of the workpiece on the work table between the first station and the sewing station.
  • This invention is applicable in the field of garment automation and more particularly in an installation ensuring on the same piece two sewing operations in two separate stations, with a single operator.
  • the operator can without moving from the first station and with a very simple gesture automatically feed the sewing machine of the second station by positioning the part of the piece corresponding to the angle of attack of the seam against a stopper, shaped to accommodate this part of the piece.
  • the method consists in positioning a piece against the stop, leaving the first sewing station, and in that the descent of the pad for transferring said piece to the second station is carried out simultaneously with the start of sewing of another piece at the first station.
  • the active guide for example a toothed wheel
  • the active guide is raised when the shoe introduces the part under the presser foot, and the position of the raised shoe is such that it can freely pass under the active guide raised during movement of the shoe to the first station and the active guide does not descend until after the passage of the raised shoe.
  • the surface of the transfer pad, applying to the part corresponds to the surface of the sewing attack angle of the part, except for a recess in the extreme part of the apex of this angle.
  • This recess must be just sufficient for the placement of this end part, left free by the shoe, under the raised presser foot of the sewing machine.
  • the stop is matched with vertical displacement means and the work table in line with the stop is hollowed out, so that the retraction is effected by displacement of the stop under the sliding surface of the work table.
  • the foot of the skate is fixed on a vertical rod matched with a compression spring.
  • This particular arrangement allows a good application of the pad on the part whatever the thickness of the latter and especially whatever the variations in height of the working surface during horizontal movement.
  • the fixed support is an arm mounted cantilevered above the work table, and one end of which is fixed to a frame located at the level of the sewing machine.
  • the fixed support comprises a cam track, cooperating with a roller fixed on the skate and having a profile corresponding to the desired rise of the skate .
  • the installation is intended to border textile pieces 1 during manufacture, for example to elasticize or glue briefs along a first leg entry 2 at the first station 3 and along the second leg entry 4 at the second station 5.
  • This installation comprises, at each of the two stations, but shown in FIG. 1 only for the second station 6, a sewing machine 6, specially equipped for carrying out the planking operation, with its drive device comprising a claw and a presser foot 7, and the needle 8 which sews along the sewing axis AA ′.
  • the work table 9 supports the piece 1 all along and after the corresponding planking operation.
  • a part 10 of the table 9 is movable in rotation about an axis which is perpendicular thereto: this mobile part, called a turntable, has an annular shape, surrounding the sewing machine 6.
  • the work table 9 of the installation at two work stations comprises two turntables 10 a at the first station, 10 b at the second station and three fixed parts, two circular parts on which the drive device and the needle of each of the two sewing machines are located and a third fixed 11 extending between the two turntables 10 a and 10 b .
  • an active guide 12 is positioned for each sewing machine above the circular fixed part of the work table 9.
  • Each of the two stations 3 and 5 conforms to the teaching of European patent N ° 86400322.3.
  • the fixed part 11 of the work table 9 extends between the two stations so that the table 9 is in the same horizontal plane.
  • the feed device comprises the arm 13 and the stop 14.
  • the stop 14 is placed on the fixed part 11 of the table 9 located between the two turntables 10 a and 10 b .
  • the angle defined by its branches 15 and 16 is equal to that formed by the sewing attack zone for the second planking operation, that is to say in this case a right angle corresponding to the angle formed by the lateral side 17 of the part 1 and the beginning of the second leg entry 4.
  • the branches 15, 16 of the stop 14 are placed vertically with respect to the plane of the work table 9, in line with a recess made in said table.
  • the stop 14 is accompanied by vertical displacement means, not shown, between a first position where the branches 15, 16 are above the plane of the table 9 and a second retracting position where they are below said plane.
  • the horizontal arm 13 is fixed at one of its ends to a vertical frame close to the sewing machine 6 of the second station, the other end being in overhang.
  • the arm 13 is positioned above the work table 9, in a direction parallel to the seam axis AA ′; it extends between the fixed part 11 of the table 9 between the two turntables 10 a and 10 b and the circular fixed part of the table 9 around the sewing machine 6 of the second station 5.
  • the shoe 18 is a plate whose surface in contact with the part 1 is constantly parallel to the plane of the work table 9.
  • the face in contact with the part is coated with a coating, for example a foam, having a high coefficient of friction with the material constituting the part 1.
  • the shoe 18 has the shape of a rectangle hollowed out in the corresponding angular zone at the two sides 19, 20 respectively parallel to the branches 15 and 16 of the stop 14. When it is in the low position at the first station 3, the shoe 18 is applied to the fixed part 11 of the table in the determined angle portion by the two branches 15 and 16 of the stop 14, so that the recess in the shoe forms with the two branches 15 and 16 a rectangular area 21.
  • the shoe 18 is surmounted by a vertical rod 22 integral a body 23.
  • the rod 22 is surrounded by a compression spring 24 bearing on the one hand on the upper face of the shoe 18 and on the other hand on the lower part of the body 23.
  • On the lower part of the body 23 is fixed on one side a horizontal rod 25 and on the other side a caster 33.
  • the body 23 in the part above the rod 25, is surrounded by a hollow element 26, supporting on the one hand a return spring 27 fixed at one of its ends to said hollow element 26 and at the other end to the rod 25 and on the other hand a locking system consisting of a horizontal pawl 38, placed inside the hollow element 26 and forced into rotation around a vertical rod 28 terminated by an elbow 34, by virtue of a torsion spring not shown resting on the elbow 34.
  • the assembly constituted by the shoe 18, the body 23 and the hollow element 26 is mounted on the arm 13 in a movable manner, so that this assembly moves from the first to the second station and vice versa along the arm 13 above of table 9 thanks to a stepping motor system with two directions of rotation / toothed belt secured to the hollow element 26.
  • the arm 13 comprises, at the first station, a system for lowering the shoe 18 consisting of a jack 29, the end of the rod 30 of which is eccentrically secured, of a semi-circular rack 31, and of a vertical pusher 32 whose opposite face of the rack 31 is notched.
  • the arm 23 comprises, at the second station, a progressive ascent system 14 of the shoe 18 consisting of a jack 35 whose rod 36 faces the elbow 34 of the locking system, and a cam 37 whose path extends over the above the roller 33 parallel to the seam axis AA ′.
  • the installation also includes all the means and automatisms making it possible to control the stepping motor, the cylinders 29 for lowering the shoe, the cylinder 35 for unlocking, the descent of the presser foot 7 and of the active guide 12, the action of the needle 8 and claws of the sewing machine 6, the retraction of the stopper 14, according to the operation which will be described below.
  • the operation of the installation is as follows.
  • the operator standing facing the work table at the first station 3, introduces the first leg entry 2 of a given piece under the presser foot of the first sewing machine. He presses his foot on a pedal controlling the descent of the presser foot of the first sewing machine. It positions along the branches 15 and 16 of the stop 14 protruding above the table 9, the second leg entry 4 of the piece 1 which was bordered along the leg entry 2 in the previous operation , so that the part corresponding to the sewing attack is in the recessed area 21. He presses again on the pedal which simultaneously controls the sewing of the given piece along the first leg entry 2 and the exit of the rod 30 of the jack 29.
  • the rod 30 (FIG.
  • the shoe 18 is driven (FIG. 5) along the arm 13 towards the second sewing machine 6 thanks to the starting of the step-by-step engine.
  • the number of steps is determined so that the shoe 18 arrives in front of the sewing machine 6.
  • the shoe is applied to the piece 1 against the work table 9 and causes the part of the piece corresponding to the piece to slide. sewing angle of attack and corresponding to the recessed area of the shoe 18 as far as the presser foot 7 of the second sewing machine 6.
  • This sliding of the part 1 is carried out on the work table from the fixed part 11 of the table 9, above the location of the retracted stop 14, up to the circular fixed part around the sewing machine 6 passing through the turntable 10 b .
  • the presser foot 7 goes down (FIG. 6) and pinches the part of the part 1 corresponding to the hollowed-out area 21 of the shoe 18.
  • the unlocking cylinder 35 is actuated (FIG. 7), so that its rod 36 comes out, presses on the bent part 34 and causes the vertical rod 28 and the pawl 38 to pivot, releasing the body 23 which can then rise under the action of the return spring 27.
  • This ascent of the body 23 in the hollow element 26 is not complete, the caster 33 coming into contact with the cam track 37 and limiting the ascent of the shoe 18 so that it is at- above the work table 9 and released from the part 1, but at a height allowing it to pass under the active guide 12 raised.
  • the stepping motor is activated ( Figures 8 and 9), for the same number of revolutions, but in a reverse rotation, ensuring the return of the shoe 18 to the first station.
  • the active guide 12 descends on the piece 1 and the sewing of the entry of the second leg 4 of the piece 1 is carried out during the return of the shoe 18.
  • the cam path 37 rises gradually, ensuring the complete ascent of the body 23 in the hollow element 26 and consequently of the shoe 18.
  • the height of the shoe 18 rise depends on the operator of the first station: it must be sufficient for the operator can clearly see the space delimited by the stop 14 in which he must position the part 1. It has been noticed that if the ascent is limited to the necessary and sufficient height for the passage of the shoe 13 under the active guide 12 , the shoe 18 obscured this space and the operator was forced to bend down to ensure positioning.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP89401059A 1988-04-20 1989-04-18 Werkstückzuführung zu einer Nähmaschine Withdrawn EP0338909A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8805545 1988-04-20
FR8805545A FR2630461B1 (fr) 1988-04-20 1988-04-20 Procede et dispositif d'alimentation automatique d'une machine a coudre

Publications (1)

Publication Number Publication Date
EP0338909A1 true EP0338909A1 (de) 1989-10-25

Family

ID=9365695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401059A Withdrawn EP0338909A1 (de) 1988-04-20 1989-04-18 Werkstückzuführung zu einer Nähmaschine

Country Status (3)

Country Link
EP (1) EP0338909A1 (de)
JP (1) JPH0263491A (de)
FR (1) FR2630461B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109848618A (zh) * 2019-03-31 2019-06-07 长兴溪谷智能装备有限公司 一种铅酸蓄电池铸焊用供料装置
CN118257069A (zh) * 2024-05-31 2024-06-28 江苏宜臻纺织科技有限公司 一种具有裁剪机构的坐垫加工用缝纫设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5293615B2 (ja) 2010-01-08 2013-09-18 信越半導体株式会社 単結晶製造装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH389378A (de) * 1964-07-04 1965-03-15 Duerkoppwerke Aktiengesellscha Pneumatische Arbeitsstück-Vorschubvorrichtung
FR2168733A5 (de) * 1972-01-21 1973-08-31 Vestra Union Sa
FR2170352A5 (en) * 1972-01-31 1973-09-14 Vestra Union Sa Sewing of clothes layers - with automatic feed of cloth to sewing area
EP0130096A2 (de) * 1983-05-25 1985-01-02 FIVES-CAIL BABCOCK, Société anonyme Anlage zur Herstellung von Hemdenmanschetten
FR2551776A1 (fr) * 1983-09-14 1985-03-15 Inst Textile De France Dispositif d'orientation et d'introduction d'une piece d'etoffe sous le pied presseur d'une machine a coudre
US4608936A (en) * 1985-11-18 1986-09-02 Cannon Mills Company Apparatus for automatically fabricating cut and edge stitched textile articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH389378A (de) * 1964-07-04 1965-03-15 Duerkoppwerke Aktiengesellscha Pneumatische Arbeitsstück-Vorschubvorrichtung
FR2168733A5 (de) * 1972-01-21 1973-08-31 Vestra Union Sa
FR2170352A5 (en) * 1972-01-31 1973-09-14 Vestra Union Sa Sewing of clothes layers - with automatic feed of cloth to sewing area
EP0130096A2 (de) * 1983-05-25 1985-01-02 FIVES-CAIL BABCOCK, Société anonyme Anlage zur Herstellung von Hemdenmanschetten
FR2551776A1 (fr) * 1983-09-14 1985-03-15 Inst Textile De France Dispositif d'orientation et d'introduction d'une piece d'etoffe sous le pied presseur d'une machine a coudre
US4608936A (en) * 1985-11-18 1986-09-02 Cannon Mills Company Apparatus for automatically fabricating cut and edge stitched textile articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109848618A (zh) * 2019-03-31 2019-06-07 长兴溪谷智能装备有限公司 一种铅酸蓄电池铸焊用供料装置
CN118257069A (zh) * 2024-05-31 2024-06-28 江苏宜臻纺织科技有限公司 一种具有裁剪机构的坐垫加工用缝纫设备

Also Published As

Publication number Publication date
FR2630461A1 (fr) 1989-10-27
JPH0263491A (ja) 1990-03-02
FR2630461B1 (fr) 1990-08-31

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