EP0016437B1 - Verfahren und Vorrichtung zum automatischen Vernähen von Pantyhosen mit Zwickelstück - Google Patents

Verfahren und Vorrichtung zum automatischen Vernähen von Pantyhosen mit Zwickelstück Download PDF

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Publication number
EP0016437B1
EP0016437B1 EP19800101352 EP80101352A EP0016437B1 EP 0016437 B1 EP0016437 B1 EP 0016437B1 EP 19800101352 EP19800101352 EP 19800101352 EP 80101352 A EP80101352 A EP 80101352A EP 0016437 B1 EP0016437 B1 EP 0016437B1
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EP
European Patent Office
Prior art keywords
suction
assembly
panty
station
hose
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
EP19800101352
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English (en)
French (fr)
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EP0016437A1 (de
Inventor
Rikichi Senba
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TAKATORI MACHINERY WORKS Ltd
Original Assignee
TAKATORI MACHINERY WORKS Ltd
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 JP3157079A external-priority patent/JPS55128001A/ja
Priority claimed from JP2581180A external-priority patent/JPS56123401A/ja
Application filed by TAKATORI MACHINERY WORKS Ltd filed Critical TAKATORI MACHINERY WORKS Ltd
Publication of EP0016437A1 publication Critical patent/EP0016437A1/de
Application granted granted Critical
Publication of EP0016437B1 publication Critical patent/EP0016437B1/de
Expired 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
    • D05B23/007—Sewing units for assembling parts of knitted panties or closing the stocking toe part
    • D05B23/008—Line closers, i.e. sewing units for forming the body portion of the panty hose
    • 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
    • D05D2207/04—Suction or blowing devices
    • 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
    • D05D2303/20—Small textile objects e.g., labels, beltloops

Definitions

  • the invention relates to an automatic seaming method and apparatus for gored panty-hoses according to claims 1 and 10, respectively.
  • One conventional method for producing a gored panty-hose includes in general two- staged seaming operations.
  • first stage two leg sections and a panty section are seamed together by the so-called skip seaming whilst leaving an unseamed opening in the crotch of an incomplete panty-hose.
  • second stage a separate gore piece is fitted to the unseamed opening and its marginal edge is seamed to the marginal portion of the unseamed opening in order to form a complete panty-hose.
  • the seaming operation Due to the complicated form of the seaming line for attaching of the gore piece to the opening, the seaming operation is extremely complicated and difficult to practice successfully. For this reason, the seaming of the gore piece according to this method has conventionally depended upon manual operation by expert operators. This naturally causes low productivity of the second stage seaming operation, increased human labour and resultant high increase in the production cost of gored panty-hoses as well as variations in quality from product to product.
  • an incomplete panty-hose is turned inside out and pulled over a tube assembly comprising two tubes one being located within the other.
  • a gore piece is presented to the protruding front end of the outer tube and held in position by pneumatic suction.
  • the gore piece then is drawn into the crotch opening of the incomplete panty-hose to form a substantially cupped shape.
  • the tubes are moved to bring one part of a cup seaming machine, either its needle bar or its needle plate, into the cupped shape gore piece and the marginal portion of the unseamed opening surrounding it.
  • the tube assembly with the panty-hose and the gore piece are rotated about the tube axis through at least 360° while an overlocking seaming machine is running to seam the gore piece to the opening.
  • the object of the invention is to provide an automatic seaming method for seaming a gore piece to the unseamed opening of the incomplete panty-hose at remarkably high production efficiency, with low production cost and extremely small variance in quality, on an automatic apparatus which is of a simple construction and is capable of carrying out the above-described second stage seaming operation with high reliability in operation.
  • the method includes dual staged seaming operations.
  • a pair of cylindrical stocking materials 1 and 2 each closed at the toe end, of same size are superposed in the section forming the panty section 6 and cutting the stockings at the open end along a length corresponding to the panty section to produce front and rear cut edge portions 3, 4, respectively.
  • a first seaming operation is performed on the stocking materials in order to obtain an incomplete panty-hose 7a such as shown in Fig. 1.
  • the front and rear cut edge portions 3 and 4 are seamed together along seam lines 3a and 4a whilst leaving a cut edge 5 in the crotch of the panty section unseamed.
  • the incomplete panty-hose thus includes an unseamed opening 5a in the crotch.
  • a gore piece 10, Fig. 9C is fitted to the above-described unseamed opening 5a in the incomplete panty-hose 7a, and the cut edge 5 in the crotch and the marginal edge of the gore piece 10 are seamed together along a seaming line 8 in order to form a complete gored panty-hose such as shown in Fig. 2.
  • An operation table 102 is mounted atop a pedestal casing 101 and both are made up of semi-circular sections and integral square sections.
  • An upwardly extending vertical shaft 103 is rotatably arranged about the center of the semi-circular section of the operation table 102 and a carrier disc 104 is horizontally mounted atop the main shaft 103.
  • four sets of downwardly extending suction assemblies 201 are disposed on the carrier disc 104 at equal intervals along its periphery.
  • the number of the suction assemblies 201 is not limited to four sets and can be chosen as desired in accordance with requirement in practice.
  • the suction assemblies 201 revolve, together with the carrier disc 104, about the axis of the main shaft 103 in the counterclockwise direction in the illustration in order to travel from the first to fourth operation stations I and IV provided on the operation table 102.
  • the incomplete panty-hose 7a having the unseamed opening 5a (see Fig. 1) is manually attached to one suction assembly 201 in that station.
  • the leg sections are pneumatically sucked into the suction tube 203 while the marginal portion of cut edge 5 is folded over the outer surface of the lower end of the suction tube 203.
  • the pneumatic suction acting on the suction assembly 201 is intercepted by suitable manual switching.
  • hooks arranged in the suction tube 203 hold the sucked incomplete panty-hose within the suction tube 203 even after the temporary pneumatic suction is terminated.
  • a gore piece 10 cut into a prescribed shape is passed to a gore piece transfer assembly 401 by a gore piece feeder assembly 301.
  • an adequate number of cuts are formed in the marginal portion of the cut edge 5 folded over the outer surface of the lower end of the suction tube 203 by a heat cutting assembly 501.
  • the cuts extend from the cut edge inwardly of the marginal portion.
  • the transfer assembly 401 fits, by its own rotation, the gore piece 10 in the correct position to the incomplete panty-hose 7a held by the suction assembly 201 and the marginal portion of the opening 5a is unfolded by e.g., application of pneumatic blow, in order to be superimposed upon the marginal edge of the gore piece 10 already placed in position on the second station II.
  • the suction assembly 201 revolves together with the incomplete panty-hose 7a and the gore piece 10 so that a sewing machine 601 seams the cut edge 5 in the crotch of the incomplete panty-hose 7a with the marginal portion of the gore piece 10 in order to obtain a complete panty-hose 7.
  • the complete panty-hose 7 is removed off the suction assembly 201 to be discharged outside the systems by a removing assembly 701.
  • the main shaft 103 is rotatably carried, via thrust bearings 106 and 107, by a cylindrical stand 105 fixed atop the operation table 102.
  • the main shaft 103 is cylindrical in shape and its lower end is connected to an adequate suction source 108a by a suction pipe 108.
  • the pneumatic suction is controlled by ordinary switching operation.
  • a drive motor 109 accompanying a known reduction gear mechanism is arranged under the operation table 102 and its output shaft carries a drive pulley 1 lOa which is operationally coupled, via a drive belt 111, to a driven pulley 11 Ob mounted to the main shaft 103.
  • the main shaft 103 and the carrier disc 104 are driven for intermittent rotation, each movement covering an angle of 90 degrees.
  • any known drive mechanism such as a Geneva Index unit may be used.
  • a known timer or the like may be used for control of the drive motor 109.
  • each suction assembly 201 includes a vertical suction tube 203 which is rotatably carried at its top by a boss 104a on the carrier disc 104 by means of thrust bearings 202.
  • the suction tube 203 is open at both longitudinal ends and a skirt- shaped bottom flange 205 is fixedly inserted over its bottom end.
  • a gear 204 is fixedly inserted over the suction tube 203 for engagement with a later described suction tube driver assembly 50.
  • At least one hook 206 is fixed at its lower end to the inside wall of the suction tube 203, which is made of a flexible material such as a synthetic resin.
  • the hook 206 blocks falling of the incomplete panty-hose 7a outside the suction tube 203 when the pneumatic suction is intercepted at the first station I.
  • three or more hooks 206 are arranged in the suction tube 203 for reliably holding of the incomplete panty-hose 7a within the suction tube 203.
  • a cover disc 120 is mounted above the carrier disc 104. It is rotatably supported at the top end of the main shaft 103 via a thrust bearing 121. The diameter of the cover disc 120 is almost equal to that of the carrier disc 104. As later described in more detail, the cover disc 120 is coupled to the pedestal casing 101 by means of the removing assembly 701 and, consequently, held stationarily despite the rotation of the main shaft 103.
  • circular holes 122 and 123 are formed in the cover disc 120 at positions corresponding to the first and fourth stations I and IV. The positions of these holes 122 and 123 are selected so that they correctly meet the top opening of a suction tube 203 when the latter is in these stations I and IV.
  • a perforated block disc 124 is arranged in the circular hole 122 in the first station I in an arrangement flush with the bottom face of the cover disc 120.
  • the circular hole 122 is connected to the top opening of the main shaft 103 by means of a curved pipe 126.
  • pneumatic suction acts on the suction tube 203 via the cylindrical main shaft 103, the curved pipe 126 and the perforated block disc 124.
  • a drive motor 53 is fixed, by means of a bracket 51, to the cover disc 120 at a position corresponding to the third station III.
  • a gear 55 fixed to its output shaft is engageable with the gear 204 on the suction tube 203 when the latter is at the third station III.
  • the suction tube 203 starts to rotate about its own axis.
  • a gore piece 10 cut into a prescribed shape is fed by the feeder assembly 301 to the transfer assembly 401 which in turn fits the gore piece 10 in the correct position to the incomplete panty-hose 7a held by the suction assembly 201 so that the sliced fringe 5 and the fringe of the gore piece are superimposed in a horizontal state.
  • the feeder assembly 301 includes a feed reel 303 of the gore piece band which is conveyed towards the transfer assembly 401 by means of feed rollers 306 and 307 via guide and dancer rollers 304 and 305.
  • a supporting stand 310 is arranged on the square section of the operation table 102 and bears a drive motor 311 which is operationally coupled to the reel 303 and the rollers 304, 306 and 307 by means of ordinary pulleys and a drive belt.
  • the gore piece band is delivered from the reel 303 by a length corresponding to one gore piece 10.
  • a pair of vertically shiftable cutters 312 and 313 are arranged at a position between the rollers 306 and 307 in order to cut out the side fringes of the gore piece band in a triangular shape during the dwell of the intermittent delivery of the band.
  • a cutter 314 arranged on the stand 310 in front of the feed roller 307 shifts downwards and forms a cut in the band in order to form a gore piece 10 of a prescribed shape, e.g. a diamond shape.
  • a cylindrical bracket 403 is fixed at a prescribed position on the operation table 102 and rotatably carries a drum assembly 404.
  • the drum assembly 404 includes a cylindrical support shaft 405 having a lower section rotatably inserted into the bracket 403, and a pair of hollow support arms 406 extending horizontally and in opposite directions from the support shaft 405 at a level above the operation table 102.
  • Each support arm 406 carries at its outer end a cylindrical upright shaft 407 having a top flange.
  • a horizontal semi-circular plate 408 is located on the top flange of each upright shaft 407.
  • the pair of semi-circular plates 408 faces each other along their straight edges whilst leaving a slight gap.
  • Each semi-circular plate 408 is provided with numerous suction holes 408a formed therethrough.
  • An inner cylinder 411 of a double drum 410 is inserted over each upright shaft 407 and a compression spring 414 is imposed between the bottom wall of its outer cylinder 412 and the top flange of the upright shaft 407.
  • the compression spring 414 co-axially surrounds the upright shaft 407. That is, the double drum 410 is elastically pressed towards the associated support arm 406.
  • a flange 413 is formed atop the outer cylinder 412 and fixedly carries the associated semi-circular plate 408.
  • a pneumatic cylinder 415 is fixed to the lower face of the operation table 102 and its piston rod 415a extends upwards slidably through the operation table 102 in order to face the lower face of the double drum 410. Consequently, as the piston rod 415a is driven for upward movement by the pneumatic cylinder 415, the double drum 410 is forced to move upwards over a prescribed distance whilst overcoming repulsion of the compression spring 414.
  • the lifted position of the double drum 410 is shown with chain lines in Fig. 7.
  • Fig. 7 Relationship in position between the pair of double drums 410 in the second station II is shown in Fig. 7. That is, the right side double drum 410 faces the downstream terminal of the gore piece feeder assembly 301 in order to receive a gore piece on its semi-circular plate from the feeder assembly.
  • the left side double drum in the second.station II is located in axial alignment with the suction tube 203 of the suction assembly 201 in that station. In this state, a slight gap is left between the semi-circular plate 408 and the lower end of the bottom flange 205 on the suction tube 203.
  • a pulley 420 is fixedly inserted over the support shaft 405 and operationally coupled to a pulley 421 on the main shaft 103 (see Fig. 3) by means of a drive belt 422.
  • the drum assembly 404 with the double drums 410 rotates about the axis of the support shaft 405 in a direction shown by an arrow in Fig. 4, i.e. counterclockwise.
  • the ratio in diameter between the two pulleys 420 and 421 is designed 1:2 so that the drum assembly 404 completes a 180 degrees rotation upon 90 degrees rotation of the main shaft 103.
  • each suction assembly 201 travels from a station to an adjacent station and the pair of double drums 410 alternate in position in order to rest in the new positions.
  • a gore piece 10 is passed to the right side double drum 410 by the feeder assembly 301 whereas the left side double drum 410 assigns a gore piece to the suction assembly 201 in second station II.
  • the lower end of the support shaft 405 is coupled in an air-tight manner to a connection pipe 425 which is in turn connected to the suction pipe 108 (see Fig. 5) via a valve 426.
  • the valve 426 takes the form of a normally closed valve which is made open only when the drum assembly 404 performs the 180 degrees rotation. This opening of the valve 426 allows application of pneumatic suction to the gore piece 10 on the associated semi-circular plate 408 via the connection pipe 425, the support arm 405, the support arm 407, a slit 407a in the upright shaft 407, the double drum 410 and the suction holes 408a of the semi-circular plate 408, thereby effectively blocking accidental falling of the gore piece during movement of the associated drum assembly 404.
  • a flat guide plate 423 extends between the second and third stations I! and III along the travelling path of the suction assemblies 201.
  • the top face of this guide plate 423 is flush with those of the semi-circular plate 408 in the lifted position (see Fig. 7) and the sewing table in the third station III.
  • the top face of the guide plate 423 should preferably be as smooth as possible. When necessary, any smoothing finish may be applied to its top face.
  • cuts are formed in the marginal portion of the cut edge 5 folded over the suction tube bottom flange 205 by heat cutting.
  • the marginal edge portion of the opening 5a has to be unfolded, for example, by air blast in order to be superimposed on the fringe of the gore piece 10 located on the sewing table.
  • Presence of the above-described cuts enables easy and successful flattening of the marginal portion of the cut edge 5. It is not always necessary to complete this flattening in the third station III.
  • the pneumatic flattening may also be carried out in the second station II. It is only required that the marginal portion of the cut edge 5 should be horizontally superimposed upon the marginal edge of the gore piece in advance to the seaming operation at the third station III.
  • a bracket 503 is fixed to the operation table 102 and carries a pneumatic cylinder 505.
  • a rack 507 is fixed at its one longitudinal end to the outer end of a piston rod 505a of the cylinder 505.
  • An arm 509 is fixed to the other end of the rack 507 and carries an electrically heated cutter 511.
  • the rack 507 is in engagement with a pinion 513 which in turn engages with a gear 519 on the opposite side of the rack 507.
  • An arm 515 extends from the pinion 513 in a direction substantially normal to the longitudinal direction of the rack 507.
  • an arm 521 extends from the gear 519 in alignment with the arm 515.
  • the arms 515 and 521 carry electrically heated cutters 517 and 523 at their free ends.
  • the arms and the cutters assume the inoperative position shown with solid lines in Figs. 12 and 13 when the pneumatic cylinder 505 is inoperative.
  • the piston rod 505a projects and the heat cutter 511 with the arm 509 moves towards the suction assembly 201 in the second station II. and arrives at the operative position shown with chain lines.
  • arms 515 and 521 also swing towards the suction assembly 201 with their heated cutters 517 and 523 in order to arrive at the operative positions shown with chain lines.
  • the heated cutters 511, 517 and 523 touch the cut edge 5 on the suction tube bottom flange 205 in order to form cuts at about 120 degrees intervals.
  • the number of the heated cutters i.e. the number of cuts formed in the sliced fringe, is not limited to three. However, in consideration of simplicity in construction and easiness in flattening operation, it is advantageous to use three sets of heated cutters.
  • the transfer assembly 401 receive a gore piece from the feeder assembly in order to transfer it to the suction assembly 201 located at second station II so that the marginal portion of the cut edge 5 of the incomplete panty-hose 7a is superimposed upon the marginal edge of the gore piece 10.
  • the seaming line on the gore piece 10 should meet that on the marginal portion of the cut edge 5 without any bias.
  • stretch is larger in the warp direction than in the weft direction. Therefore, it is advantageous that the warp direction in the gore piece 10 should meet that of the seaming line in the marginal portion of the cut edge 5.
  • This adjustment is carried out by the direction adjuster assembly 800 shown in Figs. 10 and 11.
  • a bracket 801 is mounted to the top end of the cylindrical stand 105 and carries a drive motor 802 which is driven for rotation by an electric signal from a later described photoelectric sensor 804.
  • a roller 803 is fixed to the output shaft of the drive motor 802 in pressure contact with the outer wall 205a of the bottom flange 205 on the suction assembly 201 located at the second station II. As the roller 803 rotates in the direction of an arrow "c", the flange 205 rotates in the direction of an opposite arrow "d” in Fig. 10 due to the above-described pressure contact.
  • the photoelectric sensor 804 is arranged at a proper position on a straight horizontal line passing through the center axis of the suction assembly 201 located in the second station II.
  • the sensor 804 detects presence of the cut edge 5 and the seam lines 3a and 4a on the incomplete panty-hose 7a held on the suction assembly 201 in the second station II.
  • the sensor 804 detects presence of the cut edge 5
  • its electric detection signal drives the motor 802 for rotation.
  • the motor 802 ceases its rotation, however, as the sensor 804 detects presence of the seam lines 3a and 4a.
  • the sensor 804 detects presence of the cut edge 5 when the seam lines 3a and 4a are off the straight line X and the motor 802 is driven for rotation.
  • the roller 803 rotates in the direction "c" and the flange 205 in the direction "d”.
  • the sensor 804 detects this and the motor 802 ceases its rotation.
  • the motor 802 does not rotate at all. In either case, the seam lines 3a and 4a are registered at the straight line X by the sensor 804 before the cut edge 5 and the marginal edge of the gore piece 10 are superimposed.
  • the sewing machine 601 is arranged in the third station III in order to seam the cut edge 5 of the incomplete panty-hose 7a held by the suction assembly 201 with the marginal edge of the gore piece 10.
  • the construction is shown in Fig. 8.
  • the gore piece 10 is in the flat state but the marginal portion of the cut edge 5 is folded over the suction tube bottom flange 205.
  • the marginal portion of the cut edge 5 Prior to starting of the seaming operation, the marginal portion of the cut edge 5 needs to be returned to the flat state for snug superimposition with the marginal edge of the gore piece 10. This flattening is carried out on the sewing table 603.
  • One example of such flattening is carried out by an air ejection nozzle 604 arranged near the sewing machine 601 with its ejection mouth closely facing the outer wall of the suction tube bottom flange 205. Air blow by the nozzle 604 flattens the marginal portion of the cut edge 5 on the gore piece 10.
  • nozzles 604 and 605 may be used in combination.
  • the complete panty-hose 7 formed at the third station III is removed off the suction assembly 201 at the fourth station IV in order to be discharged from the apparatus.
  • the removing assembly 701 is shown in detail in Fig. 3.
  • One end of a delivery pipe 703 is coupled to the circular hole 123 (see Fig. 6) in the cover disc 120.
  • the other end of the delivery pipe 703 is provided with a delivery mouth 704.
  • a pair of vertically spaced brackets 705 are disposed on the cover disc 120 and the operation table 102 in axial alignment, respectively, in order to hold a suction pipe 706 vertically. This connection holds the cover disc 120 inmovable with respect to the main shaft 103 which rotates intermittently.
  • the upstream end of this suction pipe 706 is coupled to the suction tube 108 with the downstream end to the delivery mouth 704.
  • pneumatic suction acts on the complete panty-hose 7 within the suction tube 201 via the suction pipes 108 and 706, the delivery mouth 704, the delivery pipe 703 and the circular hole 123.
  • the complete panty-hose 7 is discharged from the apparatus via the circular hole 123, the delivery pipe 703 and the delivery mouth 704.
  • pneumatic suction acts on a suction assembly 201 by switching it on so that, as shown in Fig. 9A, the leg sections of an incomplete panty-hose 7a are sucked into the suction tube 203 and the marginal portion of the cut edge 5 is manually folded over the bottom flange 205. Even after the pneumatic suction is terminated, the incomplete panty-hose 7a is held on the suction assembly 201 by the hooks 206 (see Fig. 2). The suction assembly 201 then travels towards the second station II whilst carrying the incomplete panty-hose 7a as shown in Fig. 9B.
  • the feeder assembly 301 passes a gore piece 10 cut into a predetermined shape to one double drum 410 of the transfer assembly 401. Thereafter, the valve 426 is rendered open in order to suck the gore piece to the top face of the associated semi-circular plate 408.
  • the double drum 410 revolves about the axis of the support shaft 405 over 180 degrees and is registered at a position below and in axial alignment with the suction assembly 201 arrived at the second station II.
  • the angular position of the marginal portion of the cut edge 5 is carried by the flange 205 of the suction tube 203 is adjusted relative to the gore piece 10.
  • valve 426 is closed in order to cancel the pneumatic suction working on the gore piece 10 on the semi-circular plate 408 and the pneumatic cylinder 415 starts to lift the double drum 410, thereby placing the gore piece 10 on the semi-circular plate 408 into pressure contact with the marginal portion of the cut edge 5 on the flange 205 as shown in Fig. 9C.
  • the heat cutting assembly 501 forms cuts in the marginal portion of the cut edge 5.
  • the suction assembly 201 with the incomplete panty-hose 7a travels towards the third station III.
  • the gore piece 10 on the semi-circular plate 408 in the lifted position slides towards the sewing table 603 along the guide plate 423 due to the above-described pressure contact.
  • the marginal portion of the cut edge 5 is turned back to the horizontal state by operation of the air ejection nozzle 604 and/or the air suction nozzle 605 in order to be superimposed on the marginal edge of the gore piece 10.
  • the suction tube driver assembly 50 operates to rotate the suction tube 203 with the incomplete panty-hose 7a and the gore piece 10 over 360 degrees so that the sewing machine 601 seams the marginal portion of the cut edge 5 together with the marginal edge of the gore piece 10.
  • Fig. 9D Concurrently with this seaming, the surplus sections of the marginal portion and the marginal edge are cut off and a complete panty-hose 7 such as shown in Fig. 9E is obtained which includes an almost round gore 10a seamed to the opening 5a along the seam line 8.
  • the suction assembly 201 travels towards the fourth station IV whilst carrying the complete panty-hose 7 inside.
  • the removing assembly 701 thereupon operates to remove the panty-hose 7 off the suction assembly 201 and discharge from the apparatus.
  • the apparatus As the suction assemblies travel along a circular endless path, the apparatus is very compact in construction and less space is necessary for its installation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Massaging Devices (AREA)

Claims (19)

1. Verfahren zum automatischen Vernähen von Strumpfhosen (7) mit Zwickelstück, welches folgende Schritte aufweist, Halten einer unvollständigen Strumpfhose (7a), welche eine ungenähte, durch eine Schnittkante (5) begrenzte Öffnung (5a) besitzt, an einer pneumatischen Saugvorrichtung (201) durch den Einsatz pneumatischer Ansaugung, mit einem Randteil der Schnittkante freiliegend außerhalb des einen Endes der Saugvorrichtung, Überlagern eines ebenen Zwickelstückes (10) unter Ausrichtung seiner Randkante auf den Randteil der Schnittkante (5), Zusammennähen der Randkante mit dem Randteil zur Bildung einer kompletten Strumpfhose, während sich die Randkante und der Randteil um einen Winkel von 360° um die Achse der Saugvorrichtung drehen, und pneumatisches Abnehmen der kompletten Strumpfhose von der Saugvorrichtung, dadurch gekennzeichnet, daß der Einsatz der pneumatischen Ansaugung nur vorübergehend erfolgt und daß das weitere Halten der unvollständigen Strumpfhose durch Haken bewirkt wird, welche innerhalb der Saugvorrichtung angebracht sind, daß der Randteil der Schnittkante über das Ende der Saugvorrichtung gefaltet wird und daß darin mindestens ein Schnitt gebildet wird, welcher sich von der Schnittkante des Randteils nach innen erstreckt, noch vor dem Überlagern durch Ausbreiten des Randteils der Schnittkante über die Randkante des Zwickeistücks.
2. Verfahren zum automatischen Vernähen nach Anspruch 1, dadurch gekennzeichnet, daß mindestens ein Schnitt durch Hitzeeinwirkung geschaffen wird.
3. Verfahren zum automatischen Vernähen nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Schritte des Haltens der unvollständigen Strumpfhose, des Überlagerns des Zwickelstücks, des Bildens der Schnitte, das Ausbreitens des Randteils, des Vernähens, und der Abnahme der kompletten Strumpfhose durchgeführt werden, während sich die Saugvorrichtung entlang einer endlosen Bahn bewegt.
4. Verfahren zum automatischen Vernähen nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Ausbreiten des Randteils pneumatisch durch Blasen bewirkt wird.
5. Verfahren zum automatischen Vernähen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Ausbreiten des Randteils pneumatisch durch Saugen bewirkt oder unterstütz wird.
6. Verfahren zum automatischen Vernähen nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß durch photo-elektrische Mittel (804) vor besagtem Vernähen ermittelt wird, ob die Nahtlinien (3a, 4a) und die Schnittkante (5) der unvollstän digen Strumpfhose in den richtigen Positionen sind oder nicht, und daß die Nahtlinien (3a, 4a) in die richtigen Positionen gebracht werden, wenn sie von den richtigen Positionen abweichen.
7. Verfahren zum automatischen Vernähen nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß die Schritte an vier verschiedenen Stationen ausgeführt werden, die abstandsgleich entlang besagter endloser Bahn liegen, und daß die Saugvorrichtung sich mit der unvollständigen Strumpfhose von der ersten bis zur dritten Station hin un mit der vollständigen Strumpfhose von der dritten bis zur vierten Station hin absatzweise mit einem Stillstand an jeder Station bewegt.
8. Verfahren zum automatischen Vernähen nach Anspruch 7, dadurch gekennzeichnet, daß das Halten der unvollständigen Strumpfhose an der ersten Station, das Überlagern des Zwickelstücks an der zweiten Station, das Vernähen an der dritten Station, und die Abnahme an der vierten Station durchgeführt wird.
9. Verfahren zum automatischen Vernähen nach Anspruch 8, dadurch gekennzeichnet, daß gleichzeitig während der Arbeitsgänge an einer Strumpfhose, welche an den verschiedenen Stationen durchgeführt werden, die Arbeitsgänge an einer Vielzahl von anderen Strumpfhosen an den anderen Stationen innerhalb gemeinsamer Stillstände durchgeführt werden.
10. Vorrichtung zum atuomatischen Vernähen von Strumpfhosen mit Zwickel, mit Saugvorrichtungen (201) zum Halten einer unvollständigen Strumpfhose (7a), mit einer Nähmaschine (601) zum Zusammennähen der Randkante eines Zwickelstücks (10) mit dem Randteil einer Schnittkante (5) der unvollständigen Strumpfhose (7a) zur Bildung einer vollständigen Strumpfhose, während sich die Strumpfhose zusammen mit dem Zwickelstück um einen Winkel von 360° dreht, und mit einer pneumatischen Saugabnahmevorrichtung (701) zur Abnahme der vollständigen Strumpfhose von der Saugvorrichtung (201), gekennzeichnet, durch eine Stützeinrichtung in Form eines horizontalen Arbeitstisches (102) mit mindestens vier getrennten Arbeitsstationen (I, Il, 111, IV), welche entlang einer endlosen Bahn abstandsgleich angeordnet sind, mindestens vier über dem Arbeitstisch angeordnete Saugvorrichtungen (201), welche jeweils so ausgebildet sind, daß sie eine unvollständige Strumpfhose (7a) halten können, und welche jeweils ein vertikales Saugrohr (203) mit einem Bodenfl ansch und mindestens einem inneren Haken (206) aufweisen, eine Einrichtung (109) zum gleichzeitigen Schrittweisen Bewegen der vier Saugvorrichtung (201) von Station zu Station entlang besagter Bahn, so daß jede Saugvorrichtung (201) während der Stillstände an einer Station ruht, eine Zwickelstückzufuhrvorrichtung (301) neben der zweiten Station (11) zum sequentiellen Zuführen von Zwickelstücken (10) einer festgelegten Form, einzeln schrittweise nacheinander, eine Zwickelstückübertragungsvorrichtung (401) zwischen der zweiten Station (11) und der Zufuhrvorrichtung (301) zur Übertragung der einzelnen von der Zufuhrvorrichtung erhaltenen Zwickelstücke in flachem Zustand zu einer Saugvorrichtung (201 während eines Stillstandes dieser Saugvorrichtung an der zweiten Station, eine Hitzeschneidvorrichtung (501) neben der zweiten Station (11) zur Bildung mindestens eines Schnittes in dem Randteil der Schnittkante (5), welcher von der Saugvorrichtung (201) gehalten wird, eine Vorrichtung (604, 605) zum Ausbreiten des Randteils in eine übereinanderliegende Position mit der Randkante des Zwickelstücks (10), ein flaches Leitblech (423), das sich zwischen der zweiten und dritten Station (11, 111) erstreckt, eine Saugrohrantriebsvorrichtung (50, 51, 53, 55) an der dritten Station (111) zum Drehen des Saugrohres (203) der betreffenden Saugvorrichtung (201) in der dritten Station um einen Winkel von 360°, eine Nähmaschine (601) an der dritten Station (111) mit einem Nähtisch (603) auf gleicher Höhe mit dem Leitblech (423) zum Zusammennähen des Randteils mit der sich damit deckenden Randkante während des Drehens um einen Winkel von 360° zur Bildung einer vollständigen Strumpfhose mit Zwickel während jedem der genannten Stillstände, wobei die Saugabnahmevorrichtung (701) an der vierten Station angerodnet ist, zum Abnehmen der vollständigen Strumpfhose mit Zwickel vonder betreffenden Saugvorrichtung (201) mittels pneumatischer Absaugung, wenn sich diese an der vierten Station befindet, und eine pneumatische Saugquelle (108a), welche mit der Übertragungsvorrichtung (401), der Abnahmevorrichtung (701) und den Saugvorrichtungen (201) verbindbar ist, wenn sich letztere an der ersten Station (I) befinden.
11. Vorrichtung zum automatischen Vernähen nach Anspruch 10, dadurch gekennzeichnet, daß der Arbeitstisch (102) die Form eines runden Tisches hat und die endlose Bahn sich entlang seines Umfangs erstreckt, daß die Antriebseinrichtung eine vertikale zylindrische Hauptwelle (103) aufweist, welche schrittweize um einen Winkel von 90° um ihre Längsachse drehbar ist, daß eine horizontale Trägerscheibe (104) am oberen Ende der Hauptwelle befestigt ist, und daß vier Saugvorrichtungen (201) von der Unterseite der Scheibe (104) in gleichen Abständen entlang ihres Umfangs herabhängen.
12. Vorrichtung zum automatischen Vernähen nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß des Innere jeder Saugvorrichtung (201) über ein manuell einstellbares Ventil und über die Hauptwelle (103) mit einem Sauganschluß (108) der Saugquelle verbunden ist.
13. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß die Zwickelstückzufuhrvorrichtung (301) eine Ablaufspule (303) eines Zwickelstückmaterialbandes, ferner eine Einrichtung zur schrittweisen Abgabe des Zwickelstückbandes von der Ablaufspule (303) in Abschnitten, welche jeweils eine Länge entsprechend einem Zwickelstück haben, weiter ein Paar von Schneidevorrichtungen (312, 313) stromabwärts der Ablaufspule zum Zuschneiden jedes gelieferter Abschnittes des Zwickelstückbandes, und eine Schneidemaschine (314) stromabwärts des Paares von Schneidvorrichtungen zum Abschneiden jeden gelieferten Abschnittes als Zwickelstück aufweisen.
14. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß die Zwickelstück- übertragungsvorrichtung (401) folgende Teile beinhaltet: eine vertikale, zylindrische Mittelstützwelle (405), welche um ihre Längsachse absatzweise jeweils um 180° drehbar ist, ein Paar von Doppeltrommeln (410), welche von der Stützwelle an einander diametral gegenüberliegenden Positionen gehalten werden, wobei das Innere jeder Doppeltrommel über die Stützwelle mit einem Sauganschluß (108) der Saugquelle verbunden ist, eine durchlöcherte halbkreisförmige Platte (408), die eine obere Öffnung jeder Doppeltrommel abdeckt und mit ihrer Oberfläche bündig mit jener des Leitblechs (423) abschließt, eine Vorrichtung (414) zum federnden Abwärtsdrücken der Trommel, und eine Vorrichtung (415, 41 5a) zum Hochdrücken der Trommel entgegen dem Druck der federnden Vorrichtung in einem Ausmaß, daß ein auf der halbkreisförmigen Platte (408) liegendes Zwickelstück an den Randteil der Schnittkante der unvollständigen Strumpfhose angedrückt wird, die von der Saugvorrichtung (201) gehalten wird.
15. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 14, dadurch gekennzeichnet, daß die Hitzeschneidvorrichtung (501) mindestens eine geheizte Schneide (517, 523), mindestens einen bewegbaren Arm (515, 521) der an seinem freien Ende die geheizte Schneide hält, und eine Antriebsvorrichtung zum Bewegen des Armes zwischen Arbeits- und Nichtarbeitspositionen beinhaltet, so daß die geheizte Schneide in der Arbeitsposition den Randteil der Schnittkante der unvollständigen Strumpfhose, die von der Saugvorrichtung (201) gehalten wird, berührt.
16. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 15, dadurch gekennzeichnet, daß die Ausbreitungsvorrichtung (604, 605) mindestens eine Luftausstoßdüse (604) und eine Luftansaugdüse (605) aufweist, welche nahe bei dem Randteil der Schnittkante (5) an der dritten Station (III) angeordnet sind.
17. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 16, dädurch gekennzeichnet, daß die Saugrohrantriebsvorrichtung ein an dem Saugrohr (203) jeder Saugvorrichtung (201) befestigtes Zahnrad (204) und einen an der dritten Station (III) angeordneten Antriebsmotor (53) aufweist, auf dessen Ausgangswelle ein Zahnrad (55) zum Eingriff mit dem Zahnrad des Saugrohrs sitzt.
18. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 17, dadurch gekennzeichnet, daß an der zweiten Station Mittel (800) zum photoelektrischen Ermitteln vorgesehen sind, ob die Nahtlinien (3a,-4a) und der Randteil der Schnittkante (5) von der Saugvorrichtung (201) in den richtigen Positionen gehalten werden oder nicht, und daß das Saugrohr (203) der Saugvorrichtung (201) durch die Mittel (800) solange gedreht wird, bis die Nahtlinien in den richtigen Positionen registriert werden.
19. Vorrichtung zum automatischen Vernähen nach einem der Ansprüche 10 bis 18, dadurch gekennzeichnet, daß die Abnahmevorrichtung (701) folgendes beinhaltet: ein Abgaberohr (703), welches an seinem einen Ende mit der oberen Öffnung jeder Saugvorrichtung (201) verbindbar ist, wenn sie an der vierten Station ist, eine an das andere Ende des Abgagerohres gekuppelte Abgabeöffnung (704), und ein Saugrohr, welches an seinem einen Ende an die Abgabeöffnung (704) und an seinem anderen Ende an einen Sauganschluß (108) der Saugquelle angekuppelt ist.
EP19800101352 1979-03-16 1980-03-14 Verfahren und Vorrichtung zum automatischen Vernähen von Pantyhosen mit Zwickelstück Expired EP0016437B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP31570/79 1979-03-16
JP3157079A JPS55128001A (en) 1979-03-16 1979-03-16 Method and apparatus for sewing gore cloth to inside of thigh of panty stocking
JP25811/80 1980-02-29
JP2581180A JPS56123401A (en) 1980-02-29 1980-02-29 Automatic weaving method and apparatus of gore containing panty stocking

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EP0016437A1 EP0016437A1 (de) 1980-10-01
EP0016437B1 true EP0016437B1 (de) 1984-06-27

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563093A (en) * 1979-06-21 1981-01-13 Takatori Kikai Seisakusho Kk Method and device for sewing panty stocking which diamond shape is formed
DE3209417A1 (de) * 1981-03-18 1982-09-30 H. Flude & Co. (Hinckley) Ltd., Hinckley, Leicestershire Naehapparat fuer zwickel
IT1198509B (it) * 1983-01-21 1988-12-21 Solis Srl Perfezionamenti relativi ad un procedimento e ad una macchina,per trasferire automaticamente o collants da una macchina che produce collants con cuciture ad una macchina per cucire tasselli
GB8807547D0 (en) * 1988-03-30 1988-05-05 Flude & Hinckley Automatic flat seaming apparatus
ITFI980125A1 (it) * 1998-05-26 1999-11-26 Matec Spa Metodo e dispositivo per applicare un tassello a manufatti tessili come collant e simili
CN110607611B (zh) * 2019-09-24 2024-04-26 强信机械科技(莱州)有限公司 一种服装下摆圈缝装置
CN112674562A (zh) * 2020-12-25 2021-04-20 赵子佩 一种人工智能工程设计用展示装置

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Publication number Priority date Publication date Assignee Title
US2982238A (en) * 1958-08-28 1961-05-02 Jr Frank H Fromm Sewing apparatus
GB2001238B (en) * 1977-04-04 1982-01-06 Flude & Co Ltd H Hosiery
IT1161402B (it) * 1978-07-07 1987-03-18 Solis Srl Metodo per applicare un tassello a manufatti in genere come calze-mutande tubolari da signora e simili e macchina per attuare detto netodo
GR70244B (de) * 1978-12-06 1982-09-01 Aznar Sa

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DE3068340D1 (en) 1984-08-02

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