EP0563493A1 - Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen - Google Patents

Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen Download PDF

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Publication number
EP0563493A1
EP0563493A1 EP92500033A EP92500033A EP0563493A1 EP 0563493 A1 EP0563493 A1 EP 0563493A1 EP 92500033 A EP92500033 A EP 92500033A EP 92500033 A EP92500033 A EP 92500033A EP 0563493 A1 EP0563493 A1 EP 0563493A1
Authority
EP
European Patent Office
Prior art keywords
piece
pieces
garment
pocket
edges
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
EP92500033A
Other languages
English (en)
French (fr)
Other versions
EP0563493B1 (de
Inventor
Mario Andrada Galan
Juan Carlos Cristos
Javier Fernandez Juarez
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.)
Inetum Espana SA
Original Assignee
Investronica SA
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 Investronica SA filed Critical Investronica SA
Priority to AT92500033T priority Critical patent/ATE167535T1/de
Priority to DE69225956T priority patent/DE69225956T2/de
Priority to EP92500033A priority patent/EP0563493B1/de
Priority to ES92500033T priority patent/ES2118123T3/es
Priority to IE271992A priority patent/IE922719A1/en
Publication of EP0563493A1 publication Critical patent/EP0563493A1/de
Application granted granted Critical
Publication of EP0563493B1 publication Critical patent/EP0563493B1/de
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
    • D05B33/00—Devices incorporated in sewing machines for supplying or removing the work

Definitions

  • the present invention relates to a method and assembly for automatic matching and sewing of different parts of a garment having or not a pattern.
  • the main object of this invention is a method and assembly to match and sew automatically two different parts of a garment having a pattern, like a front part and a pocket of a shirt.
  • This method incorporates the solution of a set of problems, solutions for some of them which are already known, and to find solutions for some other problems, are further objects of the present invention.
  • this application contemplates the use of existing technologies in combination with a new manipulator of pieces of fabric in order to attain their automatic matching and sewing.
  • the present invention is directed to a method and assembly to perform automatically the operation of matching and sewing of two different parts of a garment having a pattern which have to be matched once they have been sewn, like a pocket and a front part of a shirt.
  • the assembly works in combination with an automatic sewing machine, able to sew both parts if they have been well positioned in the assembly, and two manipulators, one of them able to receive pieces like shirt pockets one by one, and deposit them without wrinkles on a plane surface when required, and the other manipulator able to pick up a piece, like a shirt front part, from a pile of them and place it without wrinkles on said plane surface when required.
  • the assembly includes further a videocamera which takes a snapshot of the shirt pocket on the plane surface and then the image is processed by an image processor and a computer to look for the actual shape of the pocket, its location with respect to the videocamera axis, whose position with respect to the automatic sewing machine is previously known, the type of pattern if any, and the pattern location on the piece.
  • the pocket is being moved automatically by the working assembly and positioned in the starting position of the sewing machine when the related data process is finished.
  • the front part is placed on it and its image taken and processed in a similar way to that of the pocket, then allowing a positioner to move the front part through the automatic sewing machine in such a position that the pocket will be sewn to the front part on the required location, where the pocket pattern will match the front part pattern.
  • the positioner that takes both the front part and the pocket from the plane surface and positions them on the automatic sewing machine, is also a part of this invention.
  • the sequence of movements can be different according to the automatic sewing machine requirements.
  • Fig. 1 the main parts of an assembly able for matching and sewing automatically a pocket and a front part of a shirt.
  • the pocket 1 will come from a previous operation, where its upper edge has been sewn, and therefore it will come one by one, for instance on a conveyor belt 2.
  • a pocket handling device 3 takes the pocket from the conveyor belt and places it in a recognition area 4, where the X-,Y-axis have been defined on a position similar to that of Fig. 1 that is with the most of the pocket in the quadrant by -X, -Y axis. This position has really a big tolerance and can only affect slightly the data process time.
  • a videocamera 5 of the assembly takes a snapshot of the pocket and the means - not shown - for image processing starts while the positioner 6 approaches the pocket and takes it, once it is located and the adequated orders - generated by a processor not shown - given to the positioner, to release the recognition area and place it in position on a folder 13 of a sewing machine 7.
  • a handling device 8 incorporated with the assembly takes a front part 9 from a pile of them and places it on the recognition area in such a way that the corner 10 of the front part lies in the quadrants formed by -X, -Y - -axis; and near the -Y-axis of the plan surface, and the edge 11 can be seen in the recognition area 4 approximately parallel to the X-axis.
  • the tolerance position could be quantified with respect to a nominal position in about ⁇ 25 mm, and can be easily performed by some handling devices - not shown - in combination with a position tolerance of the front part pile.
  • a special requirement for the handling device is to separate one piece from the pile, and only one, and place it without wrinkles on the plan surface of the recognition area 4.
  • the pile may come straight from a not shown cutting machine, as any intermediate operation is needed for the front part.
  • the videocamera 5 takes a snapshot of it and the image processing starts to obtain the location of a matching point 12 which means a nominal point of the front part where a corresponding matching point of the pocket must coincide when both parts are sewn.
  • the nominal position of these matching points is previously given to a computer - not shown - that controls the assembly for each type of pocket and front part.
  • the first action of every image processing procedure is to determine the geometry of the piece in order to relate it to some of the models and sizes stored in the computer. The geometry is determined by referring it to an axis system related to each piece, which is defined for the pocket 1 by the upper bent edge and its mediatrice, and for the front part 9 by the edge 11 (see Fig. 1) and the perpendicular line to the edge 11 that contains the corner 10.
  • the following step is to match in the computer memory the pocket and the front part in such a way that the pattern of both coincides, that means that both matching points being as near as possible.
  • Predetermined criteria can be applied here in order to accept or not the pieces according to the correspondence between patterns (size, color) or the position tolerance between the mentioned matching points.
  • the initial pocket position the final pocket position - centered on the folder 13 -, the actual front part position, and the final related position between pocket and front part.
  • the necessary movements for the front part are easily deduced by the computer according to a predetermined program and performed by the positioner 6 that moves the front part under the folder 13 to its final position. In that way, both parts are in the start position of the automatic sewing machine that can start to operate under computer control.
  • this series of sequenced operations - see Fig. 7 - can be overlapped to optimize the cycle time, or changed according to the automatic sewing machine requirements.
  • the positioner 6 has two main functions as it has been mentioned above: the final positioning of the pocket 1 and the final positioning of the front part 9 after both pieces have been recognized by the videocamera and the sensed positions were transferred into corresponding data.
  • the preferred embodiment uses only one recognition area 4.
  • the pocket must be taken and lifted to be placed on the folder 13.
  • the front part is preferably moved by sliding it along the surface between the recognition area and the area under the folder 13 where said front part must be positioned. Both movements imply a precision requirement of the order of ⁇ 0,5 mm or less for the final position.
  • a preferred configuration of the positioner 6 for performing the functions mentioned above includes a carriage 20 which can move along lineal guides 14 and 15, parallel to X- and Y-axis respectively, being the movements performed by adequate movement transmission means, including motor controlled position and the required electronic - all not shown -.
  • the carriage 20 includes a stiff frame 19 which supports a position controlled motor 16 and an endless screw 17 (Fig. 3) connected to the motor 16.
  • a threaded piece 18 is connected to the endless screw and guided by a guide bar 40 of the frame 19 so that said piece 18 is lineally moved along the endless screw, without rotation, when the motor 16 acts the endless screw.
  • a lever 21 is connected to the piece 18 and joined to a pivot 41 mounted on the frame 19.
  • the lever 21 rotates around Z axis, relative to the carriage 20, when the piece 18 moves along the endless screw.
  • a clamp apparatus 22 is connected to the pivot 41 so that said clamp apparatus can move up and down, along Z axis, with respect to said carriage 20.
  • the lower position is defined by contact between the bottom surface of the clamp apparatus and the external surface 23 (Figs. 5/6) which can be either the recognition area 4, the folder 13 or the sewing machine surface under the folder 13.
  • the upper position is limited by an end stop fixed to the frame 19.
  • the positioner 6 includes a clamp apparatus 22 and adequate technical means to move it along X-, Y- and Z-axis and rotate it around Z-axis.
  • the carriage 20 with the clamp apparatus 22 performs different operations when the pocket or the front part has to be moved.
  • the clamp apparatus When the pocket is to be moved, once its image is taken on the recognition area 4, the clamp apparatus is placed above the pocket whereby the clamp apparatus is in its upper position, then it is moved along Z axis to its lower position pressing the pocket and closing two blades 24 (see Figures 5 and 6) to fasten the pocket by both sides against edges 30 mounted on the clamp apparatus (see Fig. 3) in such a way that possible movements between clamp apparatus and a pocket piece are avoided, then the clamp apparatus returns to its upper position and is moved to the required position above the machine folder 13, where it is moved again to its lower position and releases the pocket by opening the blades and returning to its upper position after the pocket is fastened by the folder.
  • Dimensions A and B are respectively the distances between the blades 24 when in closed and open position, then allowing the fastening of any pocket whose width is intermediate between those dimensions.
  • the lower surface of the clamp assembly which contacts withthe pocket surface is provided with deformable or compression material 25 like foam, to guarantee a minimum pressure on a determined pocket surface which avoids the possibility of local displacements or deformations while the blades 24 are closing or opening.
  • the blades 24 are moved simultaneously by the action of the endless screw 26 (Fig. 4) which is moved by a motor 27 and adequate movement transmission means 43, 44 controlled by the computer.
  • the movement of the blades is guided by a part of lineal guides 28.
  • the blades 24 can have small vertical movements with respect to their guides in order to contact better with the surface where the pocket is to be taken.
  • the clamp assembly in its upper position is placed above the front part on a determined relative position, then it is moved down to its lower position and press the front part mainly by four grip heads (points) 29 more distant from the rotation axis Z, being these main contact points provided with deformable or compression material 43 (Fig. 2), like foam.
  • the front part is moved by the clamp apparatus to its final position, previously calculated by the computer, by sliding it along the intermediate surface between the recognition area and the start position of the sewing machine, maintaining approximately constant the contact pressure.
  • other points near the rotation axis contact the front part with less pressure to avoid possibility of local deformation during the movement.
  • the contact surface on the front part is determined by the area where the pocket is to be sewn in such a way that the clamp apparatus is approximately centered on that area.
  • the larger area of the clamp apparatus guarantees that when the front part is released, no wrinkles are transmitted to the pocket area. In this way it is not necessary to fasten the whole surface of the front part.
  • the positioner for handling the mentioned garment pieces includes a carriage with clamp means or apparatus comprising a set of pressing points to press the larger fabric piece on the surface of an area corresponding to said larger piece that includes the area (folder) in which the pocket piece is to be sewn, and means to keep a minimum pressure load on every pressing points when pressing on the larger piece while said piece slides along a horizontal surface of the apparatus, said clamp means further comprising a pressing piece having two edges to press the pocket near the two symmetrical edges of the pocket, two blades whose sharp edges are parallel to said pressing piece edges in the same horizontal plane, and means to move the blades from an open position in which the distance between the edges of the blades is larger than the distance between the edges of the pocket to a closed position in which the blades contact along the edges of the pressing piece, allowing to fasten a pocket piece by their symmetrical edges, said clamp means further comprising spring means to guarantee a minimum pressure of the blade edges against the surface where the pocket piece is to be taken while the blades are

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP92500033A 1992-04-02 1992-04-02 Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen Expired - Lifetime EP0563493B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT92500033T ATE167535T1 (de) 1992-04-02 1992-04-02 Verfahren und vorrichtung zum automatischen anpassen und nähen von taschen
DE69225956T DE69225956T2 (de) 1992-04-02 1992-04-02 Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen
EP92500033A EP0563493B1 (de) 1992-04-02 1992-04-02 Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen
ES92500033T ES2118123T3 (es) 1992-04-02 1992-04-02 Metodo y aparato para el casado y cosido automatico de bolsillos.
IE271992A IE922719A1 (en) 1992-04-02 1992-10-09 Method and apparatus for automatic matching and sewing of¹pockets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92500033A EP0563493B1 (de) 1992-04-02 1992-04-02 Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen

Publications (2)

Publication Number Publication Date
EP0563493A1 true EP0563493A1 (de) 1993-10-06
EP0563493B1 EP0563493B1 (de) 1998-06-17

Family

ID=8211816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92500033A Expired - Lifetime EP0563493B1 (de) 1992-04-02 1992-04-02 Verfahren und Vorrichtung zum automatischen Anpassen und Nähen von Taschen

Country Status (5)

Country Link
EP (1) EP0563493B1 (de)
AT (1) ATE167535T1 (de)
DE (1) DE69225956T2 (de)
ES (1) ES2118123T3 (de)
IE (1) IE922719A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853866A (en) * 1986-04-02 1989-08-01 Investronica S.A. Method and apparatus for matching panels to be cut from patterned fabrics
DE3921020A1 (de) * 1988-06-27 1990-01-25 Brother Ind Ltd Werkstueckfixiervorrichtung mit musteranpassung
DE4030421C1 (de) * 1990-09-26 1991-12-19 G.M. Pfaff Ag, 6750 Kaiserslautern, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4853866A (en) * 1986-04-02 1989-08-01 Investronica S.A. Method and apparatus for matching panels to be cut from patterned fabrics
DE3921020A1 (de) * 1988-06-27 1990-01-25 Brother Ind Ltd Werkstueckfixiervorrichtung mit musteranpassung
DE4030421C1 (de) * 1990-09-26 1991-12-19 G.M. Pfaff Ag, 6750 Kaiserslautern, De

Also Published As

Publication number Publication date
DE69225956T2 (de) 1998-10-15
DE69225956D1 (de) 1998-07-23
EP0563493B1 (de) 1998-06-17
ATE167535T1 (de) 1998-07-15
ES2118123T3 (es) 1998-09-16
IE922719A1 (en) 1993-10-06

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