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EP0194182A1 - Werkstückkantenführungsvorrichtung für Nähmaschine - Google Patents

Werkstückkantenführungsvorrichtung für Nähmaschine Download PDF

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Publication number
EP0194182A1
EP0194182A1 EP86400322A EP86400322A EP0194182A1 EP 0194182 A1 EP0194182 A1 EP 0194182A1 EP 86400322 A EP86400322 A EP 86400322A EP 86400322 A EP86400322 A EP 86400322A EP 0194182 A1 EP0194182 A1 EP 0194182A1
Authority
EP
European Patent Office
Prior art keywords
installation according
guide
treatment
edge
treated
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
EP86400322A
Other languages
English (en)
French (fr)
Other versions
EP0194182B1 (de
Inventor
Jean-Marie Bachmann
Jacques Pion
Jean-Pierre 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.)
Institut Textile de France
Original Assignee
Institut Textile de France
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 FR8502519A external-priority patent/FR2577578B1/fr
Priority claimed from FR8511509A external-priority patent/FR2585378B2/fr
Application filed by Institut Textile de France filed Critical Institut Textile de France
Priority to AT86400322T priority Critical patent/ATE46725T1/de
Publication of EP0194182A1 publication Critical patent/EP0194182A1/de
Application granted granted Critical
Publication of EP0194182B1 publication Critical patent/EP0194182B1/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
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices

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 an installation is complicated and requires the workpiece to be held flat without folds on the work table, during treatment.
  • the refocusing means comprise a part of the work table which is movable in rotation around an axis which is perpendicular thereto, and motor means controlled by the detection device for driving said movable part in rotation in a suitable direction as a function of the position of the part.
  • This installation is mainly intended for linear treatment along a curved edge, having a regular curvature, for example a male panty; it is not suitable for the treatment of parts having various profiles, for example a successively convex then concave curvature, nor for the treatment of parts of reduced dimensions.
  • the upstream and downstream as well as the right and the left are to be situated in relation to the movement of the part during its treatment.
  • the notion of right and left is to be considered as dependent on the right or left character of the processing machine itself, or on the way of placing the part and its edge relative to said machine.
  • the detection device will control the refocusing of the part by displacement, either of the only active guide, or of the only movable support or of these two means. same time in the same direction or even in opposite directions.
  • the installation according to the invention allows a much more precise refocusing thanks to the combination of the two distinct means, which can act either together or independently of one another depending on the position of the part. and its shape.
  • the detection device will advantageously include four detectors, the fourth being located upstream of the active guide, to the left and substantially distant from the line reference.
  • the first two detectors are placed symmetrically with respect to the reference line, similarly, when the detector device comprises four detectors, the third and the fourth detectors are placed symmetrically with respect to the line reference.
  • the active guide consists of a member that applies to the workpiece and moves it by sliding it on the work table.
  • it consists of a rotary member coming into contact with the part and rotating around an axis located in a vertical plane substantially parallel to the processing axis, said rotary member comprising on its periphery several identical elements, intended to come into contact with the part, each of said elements having the shape of a disc, being free to rotate and being placed in a radial plane with respect to the axis of rotation of the rotary member.
  • the presence of the discs, on the periphery of the rotary member and in contact with the workpiece, allows during the rotation of said member to move the workpiece transversely relative to the treatment axis, while limiting friction during the advancement of the part thanks to the rotation of said discs on themselves.
  • the mobile support can consist of a part of the work table, mobile in rotation around a perpendicular axis, as described in French patent FR-A-2,457,920. It can also consist of an endless belt whose upper strand is placed in the plane of the work table and in continuation thereof.
  • the linear processing installation described above can operate in a manner which is not yet appropriate.
  • the refocusing means automatically follow the edge of the part without the treatment stopping. actually at the desired location for the end of treatment.
  • the counting device is intended to give a numerical value to the treatment along the edge of the part. In particular, this will involve counting stitches for sewing or planking along the edge of a textile piece. In the latter case, counting is obtained by detecting the reciprocating movement of the needle bar of the sewing machine: the counting device then comprises a detector, which counts the oscillations of the needle bar.
  • the counting device controls the action of the refocusing means so that the stopping of the motor means of the turntable and the lifting of the active guide are controlled as soon as the counting device has recorded a numerical value given, function of the length of the edge to be treated of the flexible part.
  • the numerical value in the case of a seam of a certain type, can correspond to the number of stitches necessary to carry out the seam over a distance slightly less than the total length of the edge to be sewn.
  • the counting device records, for each piece, the number of stitches made by the sewing machine since the start of sewing.
  • the numerical value can correspond to the number of stitches necessary to carry out sewing over a certain distance, between a locatable stitch and the end of the edge to be sewn.
  • This locatable point will for example be the limit of a locatable excess thickness thanks to a reflector type detection system mounted on the active guide placed opposite a photoelectric sensor.
  • the counting device controls the stopping of the motor means of the turntable and the lifting of the active guide which thereby loses contact with the workpiece; the seam continues linearly along the edge of the workpiece, without it being moved by the centering means.
  • This particular arrangement responds well to the difficulty encountered in making the end of the sewing selvedge escape from the control of the refocusing means when said selvedge has a profile close to a portion of the curve.
  • a retractable stop guide is added to the counting device, controlled by the counting.
  • the guide surface of this abutment guide is, in the service position, positioned at a distance from the treatment line which corresponds approximately to the width of the part required between the treatment line and the edge of the part.
  • the counting device controls the commissioning of the stop guide and therefore the movement of the guide surface towards the position described above, simultaneously with the lifting of the active guide.
  • the drive device for moving, with respect to the treatment machine, the zone being treated of the part along the axis of treatment comprises means for varying the advance of the part in front the processing point, said means being controlled by the counting device.
  • the sewing machine has a differential shoe, the adjustment of which is controlled during sewing by the counting device.
  • This embodiment is particularly suitable for controlling the deformation of a knitted fabric during sewing.
  • the differential claw adjustment is predetermined as a function of the expected deformation of the knitting during sewing; and the adjustment during sewing is controlled by the counting device as a function of the number of stitches counted since the start of sewing.
  • the installation is intended to border textile pieces 1 during manufacture, for example to elasticize or glue briefs along a leg entry.
  • This installation comprises a sewing machine 2, specially equipped for carrying out the planking operation, with its drive device comprising a claw 33 and a presser foot 3, and the needle 4 which carries out the sewing along the sewing axis AA '.
  • the seam must be made at a certain distance e from the edge 5 to be sewn.
  • the edge of the piece 1 is located along the axis BB ', parallel to the sewing axis AA' and distant from it by the distance e to the right in the direction of advance of room 1 during planking.
  • the work table 6 supports the piece 1 throughout and after the planking operation.
  • a part 7 of the table 6 is movable in rotation around the axis 8 which is perpendicular thereto: this mobile part which we call turntable has an annular shape, surrounding the sewing machine 2 and a fixed part of the work table 6.
  • the turntable is driven in one direction or the other by motor means not shown.
  • the active guide 9 is positioned upstream of the presser foot 3, to the left of the reference line BB 'and to the right of the fixed part 6 of the work table.
  • This guide 9, as illustrated in FIG. 5, consists of a rotary member 10 rotating around an axis 11 and supporting on its periphery ten discs 12, free to rotate in recesses 13 formed radially in the member 10 It is placed above the table 6 so that it rests on the piece 1 during the planking and that the plane perpendicular to the table 6 passing through its axis of rotation 11 is parallel to the seam axis. AA '.
  • the displacement action transverse of the discs 12 during the rotation of the member 10 takes place along the line CC 'perpendicular to the processing axis AA' in a zone 17 located at a distance D3 from the reference line BB '.
  • the distance D3 is a function of the behavior of the fabric constituting the piece 1 and also of the minimum radius of curvature of the piece; in any event D3 must be sufficient for the active guide 9 to always be in contact with the part 1 during the planking operation, as long as the latter has not exceeded the line CC ′.
  • Two photoelectric detectors 14 and 15 are placed on either side of the reference line BB 'in a plane perpendicular to said line located between the presser foot 3; one 14 to the right, the other 15 to the left of line BB ', they are placed symmetrically with respect to said line and their spacing defines the width of the correct guide zone and is a function of the distance e allowed for l planking operation.
  • Another photoelectric detector 16 is placed to the right of the line BB 'upstream of the active guide 9: it is distant from the line BB' by a distance D1 which is much greater than that existing between the detector 14 and the line BB 'and which is a function of the minimum radius of curvature of the part 1 to be bordered: the greater the curvature of the edge to be treated and the greater the distance Dl.
  • Each of the three detectors 14, 15, 16 is designed to emit a signal when the part 1 is present above it.
  • the information sent by the three detectors, of the presence or absence of the piece 1 at each of their positions, makes it possible to know the exact position of the piece 1 in front of the sewing head, and to control the turntable 7 and / or the active guide 9 for orienting the part 1 all along its planking, according to a predetermined program.
  • the installation comprises a sensor 30 placed at the top of the needle bar 4 'and capable of counting the number of movements "up” and down “of said bar 4' during of the sewing operation and therefore the number of sewing stitches.
  • cylinder 18, integral with the sewing machine 2 is connected to the support 19 of the active guide 9. This comprises a horizontal axis of rotation 21, making it possible to raise and lower the part 10 of the guide 9 under the action of the cylinder 18
  • the connection between the rod of the jack 18 and the support 19 of the active guide 9 is provided by a flexible cable 20; thus when the rollers 12 of the guide 9 are applied to the piece 1 the cable 20 is relaxed and the rollers 12 can follow the differences in thickness that the piece 1 may have when it moves on the table 6.
  • the abutment guide 34 has a guide surface 36, against which the edge to be treated of the part 1 comes to bear when the jack 35 is got out.
  • the guide surface 36 of the abutment guide 34 is at a distance from the treatment line AA 'which corresponds approximately to the width e necessary between the treatment line AA' and the edge of the part BB '.
  • the guide surface 36 can, as illustrated in FIG. 2, have a bent shape 36 'adapted to prevent the edge to be guided of the piece 1 from lifting and therefore hold it against the table 6.
  • the jacks 18 and 35 are controlled by the counting device 30.
  • the operation of the installation is as follows.
  • the piece 1 to border is placed on the turntable 7, then the angle at which sewing must start is introduced under the active guide 9 and under the presser foot 3.
  • the sewing machine 2 is started and the system claw 33 - presser foot 3 drives the piece 1 in the direction of the sewing axis AA '.
  • the three preceding operations, placing of the part 1 on the plate 7, introduction under the active guide 9 and under the presser foot 3, starting the sewing machine 2 are carried out either by an operator or automatically.
  • the recentering means which are the active guide 9 and the turntable 7 will, independently of one another or simultaneously, guide the piece 1 so that the seam is performs along the edge 5, substantially parallel to the latter and at a distance e.
  • the action of the refocusing means is controlled by the information received from the detectors 14, 15, 16 according to a defined program, an example of which is given in table 1 given in appendix I.
  • the columns entitled 14, 15, 16 define the state of each detector according to whether the part is present (X) above said detector or absent (-).
  • the column entitled “active guide” defines either the inaction of the rotary member 10 (0) or its rotation in the direction driving the piece 1 to the right (D) or its rotation in the direction driving the piece 1 to the left (G).
  • the column entitled “turntable” uses the same parameters as the previous column for the turntable 7.
  • the right part of the table illustrates the position of the part relative to the detectors and the action of the recentering means: arrow f for the guide active 9 and arrow F for platform 7.
  • the stitch counting device 30 is programmed to count the stitches on the one hand from the start of sewing of each piece 1 to be treated, and on the other hand to order, when the number of stitches counted by the counting device 30 has been reached.
  • both the stopping of the refocusing means namely the stopping of the motor means of the turntable 7 and the action of the jack 18 which lifts the active guide 9 and also the action of the jack 35 which advances the stop guide 34 into the service position.
  • a pair of briefs as shown in Figure 3a, has a border length EF equal to 50 cm. It is desired to interrupt the action of the refocusing means when the seam is produced according to the curve EF ′, the point F r being 2 cm from the point F which marks the end of the edge to be treated.
  • the stitch density obtained by the sewing machine 2 is 5 stitches per centimeter.
  • the numerical value given is equal to the number of points to cover the distance EF ', ie 240 points.
  • the active guide 9 comprises a system for detecting the oscillations to which the rollers 12 are subjected during variations in thickness of the part 1.
  • This detection system comprises a reflector 31 , integral with the support 19 of the active guide 9, and a photoelectric sensor 32.
  • This particular arrangement is particularly suitable when the part to be treated is made up of elements assembled by sewing and therefore having extra thicknesses.
  • Figure 3b shows a slip, to border along EF, which consists of three pieces 24, 27 and 28 assembled by sewing with shaving. Due to the imprecision of the cut for each of the pieces to be assembled and also due to the assembly zones 25 and 26, there are significant differences from one piece to another for the same EF edge to be treated.
  • the counting device 30 is programmed to count the number of stitches no longer from the start E of the seam, but from point H. The imprecision is therefore limited to the deviation over the only length HF (and no longer EF).
  • the point H at the start of counting is identified by the detection system, according to the oscillations of the active guide 9.
  • the bottom 24 of the pants consists of two pieces of knitted fabric and therefore has a thickness twice that of the back 28; thus the passage of the rollers 12 of the active guide 9 from the bottom 24 to the back 28 creates a downward movement of the active guide 9, movement which is detected by the displacement of the reflector 31 in front of the photoelectric sensor 32: the signal obtained authorizes the start of the counting of points by the device 30.
  • the installation comprises, in addition to the sensor 30 placed at the upper part of the needle bar 4 ', a differential claw 34.
  • this claw is placed upstream of the needle 4 and is driven by a movement allowing the workpiece 1 to advance at a speed greater than, equal to or less than that of the claw 33.
  • the differential claw 34 is controlled by the counting device 30.
  • This particular arrangement is used in particular when the piece 1 to be treated is a knitted fabric which will tend to deform during treatment. This deformation is compensated by the operator when sewing is carried out manually, it will be done, in automatic operation, thanks to variations in adjustment of the differential prong programmed according to the number of stitches counted by the sensor 30.
  • the selvedge border EF can be roughly divided into three parts depending on the direction of the rows and columns of stitches: the EI part whose direction is substantially parallel to the rows of stitches, the IH part whose direction is substantially perpendicular to the rows of cells (and therefore parallel to the columns of cells) and the HF part whose direction is oblique with respect to the columns of cells.
  • the passage of the knitted fabric in the drive members of the sewing machine causes variable extensions depending on whether the seam line AA 'is parallel, perpendicular or oblique with respect to the columns of stitches : for example along the EI part the knitted fabric will tend to undergo a strong extension during its passage under the drive members of the sewing machine, along the I H part no extension and along the HF part a weaker extension.
  • the sensor 30 is preprogrammed to start counting the number of stitches from point E, the start of sewing of each piece 1, and to successively control a linear speed of the differential gripper 34 significantly greater than that of the gripper 33 from 0 to 50 points, equal to that of claw 33 from 51 to 185 points and slightly higher than that of claw 33 from 186 to 300 points.
  • the variation of the linear speed of the differential shoe 34 is obtained by changing the amplitude of the horizontal movement of said shoe.
  • the bottom 24 of the briefs (FIG. 3a) consists of two layers of knitting, the sewing edges 45 of which are adjusted during the mounting of this bottom 24 with the front 27 and the back 28 of the article.
  • the active guide 9 When this part 24 is subjected to the action of the active guide 9, the latter comes into contact with the upper layer and drives it transversely to the sewing direction according to the method described above. But the upper layer sliding more easily on the lower layer, than the latter slides on the fixed part 6 of the work table, this lower layer does not follow the movement imposed by the active guide 9. This results in a shift of the two sewing edges which is inadmissible.
  • a second active guide, lower 42 can complete the action of the upper guide 9 (FIG. 4).
  • This second guide 42 is identical to guide 9. It is placed under the fixed part 6 of the work table and emerges a few millimeters through the recess 43. Its rotation is obtained by motor means 46 similar to those of guide 9 and by a set of pulleys and belt 44 and 40.
  • a flexible blade 41 integral with the frame exerts a pressure above the knitted fabric in the direction of the table 6 in order to apply the lower layer of knitted fabric against the active guide 42.
  • the rotation of the active guides 9 and 42 is controlled by the same information received from detectors 15 and 16.
  • the two guides therefore act simultaneously, the upper guide 9 rotating in the trigonometric direction and the lower guide 42 in the opposite direction or vice versa.
  • Each guide acts on a thickness of knitting and displaces it by the same amount. As a result, the edge-to-edge adjustment is maintained.
  • the motor means of the turntable 7 allow said drive to be driven at two different speeds, which allows accelerating in certain cases the corrections on the upstream part of the part 1.
  • the sewing machine 2 also has a normal speed and a slow speed, the latter being advantageously used in the event of a particularly pronounced curvature to be corrected.
  • Table 2 in Appendix II gives an example of a program for controlling the two recentering means and the sewing machine 2 as a function of the information emitted by the three detectors 14, 15, 16.
  • the speed of the motor means by using an uppercase letter for high speed and a lowercase letter for low speed.
  • the arrangement of the different means with respect to each other is as follows. Taking sewing point 4 as the origin and seam line AA 'as the reference axis, the three detectors 14, 15 and 16 are located respectively 40, 32 and 70 millimeters from the needle and at 5, 2 and 30 millimeters from the seam axis AA '.
  • the active guide 9 has an outside diameter of 24 millimeters, each of the ten rollers has a diameter of 8 millimeters.
  • the axis of rotation 11 of the active guide 9 makes an angle of 35 ° with the work table 6.
  • the point of contact of the active guide 9 with the work table 6 is on the seam line AA ', 45 mm from the needle 4.
  • the fixed part 6, inside the turntable 7, has a diameter of 480 millimeters, its center being located on the perpendicular to the sewing axis AA 'passing through the sewing point 4 at a distance of 200 millimeters of it.
  • the speed of the machine. sewing 2 in normal operation is 4,170 revolutions per minute, in idle operation of 2,000 revolutions per minute.
  • the mat is associated with motor means, allowing its movement in both directions; it is directed either transversely to the seam axis AA ', or obliquely to said axis, in this case it ensures the refocusing of the part and also it facilitates the advance of the part 1 towards the seam head 4. This latter arrangement is particularly advantageous in the case of a heavier part.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP86400322A 1985-02-21 1986-02-17 Werkstückkantenführungsvorrichtung für Nähmaschine Expired EP0194182B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400322T ATE46725T1 (de) 1985-02-21 1986-02-17 Werkstueckkantenfuehrungsvorrichtung fuer naehmaschine.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8502519A FR2577578B1 (fr) 1985-02-21 1985-02-21 Installation de traitement lineaire d'un bord d'une piece souple telle qu'une piece textile.
FR8502519 1985-02-21
FR8511509A FR2585378B2 (fr) 1985-07-26 1985-07-26 Installation perfectionnee de traitement lineaire d'un bord d'une piece souple telle qu'une piece textile
FR8511509 1985-07-26

Publications (2)

Publication Number Publication Date
EP0194182A1 true EP0194182A1 (de) 1986-09-10
EP0194182B1 EP0194182B1 (de) 1989-09-27

Family

ID=26224386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400322A Expired EP0194182B1 (de) 1985-02-21 1986-02-17 Werkstückkantenführungsvorrichtung für Nähmaschine

Country Status (3)

Country Link
US (1) US4682553A (de)
EP (1) EP0194182B1 (de)
DE (1) DE3665893D1 (de)

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DE3621238A1 (de) * 1986-06-25 1988-02-04 Union Special Gmbh Naehgutausrichtvorrichtung fuer naehmaschinen
US5251557A (en) * 1992-08-07 1993-10-12 Union Special Gmbh Sewing machine with an edge guiding device to guide one or more plies of material
US5370072A (en) * 1993-09-17 1994-12-06 Union Special Corporation Automatic alignment of material and positioning at the stitch forming location

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JPS6343687A (ja) * 1986-08-07 1988-02-24 パフ　インドウストリ−マシ−ネン　ゲゼルシヤフト　ミト　ベシユレンクテル　ハフツング 縫付け装置
US5562060A (en) * 1993-10-04 1996-10-08 Atlanta Attachment Company Waist band attachment system
US5642681A (en) * 1994-09-23 1997-07-01 Union Special Corp. Sewing sleeves on shirt bodies
US5622125A (en) * 1994-09-23 1997-04-22 Union Special Corporation Automatic coverstitch on circular garment bands
US5676078A (en) * 1994-09-23 1997-10-14 Union Special Corporation Method and apparatus for sewing sleeves on shirt bodies
US5570647A (en) * 1994-09-23 1996-11-05 Union Special Corporation Automatic attachment of a rib knit band to a shirt body
US20090044463A1 (en) * 2007-08-16 2009-02-19 Onorio Moscone Adjustable shim
US8850999B1 (en) * 2011-02-10 2014-10-07 Daniel K. Kalkbrenner Sewing machine feed device
US20140033959A1 (en) 2012-08-02 2014-02-06 Intertec Systems, L.L.C. Stitching system with real-time steering control

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FR1172430A (fr) * 1957-02-28 1959-02-10 Herbin Ets Perfectionnements apportés aux machines à coudre industrielles
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US3611960A (en) * 1970-05-11 1971-10-12 Ivanhoe Research Corp Rotating plate workpiece orienting and point-to-point feeding apparatus
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
US3994247A (en) * 1975-05-30 1976-11-30 Amf Incorporated Material positioning apparatus
DE2632551A1 (de) * 1975-09-05 1977-03-17 Yamato Mischin Seizo K K Verfahren und vorrichtung zur herstellung eines rundsaumes an einem in sich geschlossenen rand eines stoffes
DE2708338A1 (de) * 1976-02-27 1977-09-08 Kayaba Industry Co Ltd Automatisches fuehrungsverfahren fuer ein werkstueck in einer naehmaschine sowie vorrichtung zur durchfuehrung dieses verfahrens
DE2720019A1 (de) * 1976-05-04 1977-11-17 Kayaba Industry Co Ltd Automatische naehmaschine
US4109596A (en) * 1977-06-23 1978-08-29 Levi Strauss & Co. Automatic stitching pattern control system for a sewing machine
DE2846035A1 (de) * 1978-04-06 1979-10-11 Janome Sewing Machine Co Ltd Steuervorrichtung fuer den transporteur einer naehmaschine
EP0020184A1 (de) * 1979-05-11 1980-12-10 Gérard Biotteau Nähmaschinen mit automatischer Werkstückführung
EP0020259A1 (de) * 1979-05-29 1980-12-10 ANVAR Agence Nationale de Valorisation de la Recherche Anlage zur linearen Behandlung des kurvenförmigen Randes eines flexiblen Werkstückes, zum Beispiel eines Textilwerkstückes
GB2062707A (en) * 1979-09-14 1981-05-28 Amf Inc Guiding Work in Sewing- Machines
DE2939238A1 (de) * 1979-09-27 1981-04-02 Beisler Gmbh, 8752 Goldbach Vorrichtung zur bildung einer naht laengs mindestens eines teiles der raender eines naehgutteiles
FR2467902A1 (fr) * 1979-10-18 1981-04-30 Valton Sa Dispositif pour la mise automatique en position d'une piece de vetement en vue de l'execution d'une couture
US4359953A (en) * 1980-07-14 1982-11-23 Microdynamics, Inc. Control system for sewing machine
DE3033023A1 (de) * 1980-09-02 1982-04-01 Beisler Gmbh, 8752 Goldbach Vorrichtung zur steuerung der transporteurbewegung einer naehmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621238A1 (de) * 1986-06-25 1988-02-04 Union Special Gmbh Naehgutausrichtvorrichtung fuer naehmaschinen
US5251557A (en) * 1992-08-07 1993-10-12 Union Special Gmbh Sewing machine with an edge guiding device to guide one or more plies of material
FR2694576A1 (fr) * 1992-08-07 1994-02-11 Union Special Gmbh Machine à coudre avec un dispositif de guidage des bords pour guider une ou plusieurs parties d'article à coudre.
US5370072A (en) * 1993-09-17 1994-12-06 Union Special Corporation Automatic alignment of material and positioning at the stitch forming location
WO1995008014A2 (en) * 1993-09-17 1995-03-23 Union Special Corporation Material alignment and positioning at the stitching location
WO1995008014A3 (en) * 1993-09-17 1995-06-01 Union Special Corp Material alignment and positioning at the stitching location

Also Published As

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EP0194182B1 (de) 1989-09-27
US4682553A (en) 1987-07-28
DE3665893D1 (en) 1989-11-02

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