EP0278967A1 - Machine a coudre pour coudre une bande de caoutchouc. - Google Patents

Machine a coudre pour coudre une bande de caoutchouc.

Info

Publication number
EP0278967A1
EP0278967A1 EP87905611A EP87905611A EP0278967A1 EP 0278967 A1 EP0278967 A1 EP 0278967A1 EP 87905611 A EP87905611 A EP 87905611A EP 87905611 A EP87905611 A EP 87905611A EP 0278967 A1 EP0278967 A1 EP 0278967A1
Authority
EP
European Patent Office
Prior art keywords
presser foot
rubber band
sewing machine
braking device
sewing
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
EP87905611A
Other languages
German (de)
English (en)
Other versions
EP0278967B1 (fr
Inventor
Pantelis Bozoglou
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0278967A1 publication Critical patent/EP0278967A1/fr
Application granted granted Critical
Publication of EP0278967B1 publication Critical patent/EP0278967B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/06—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet
    • 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
    • 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
    • D05D2303/02—Tape
    • D05D2303/04—Tape elastic
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/02—Folding
    • D05D2305/04—Folding longitudinally to the sewing direction
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/08—Cutting the workpiece
    • D05D2305/12—Cutting the workpiece transversally

Definitions

  • the invention relates to a sewing machine for sewing a rubber band according to the preamble of claim 1.
  • the separating device for cutting through the rubber band is arranged in the area between the braking device and the inlet opening of the printer foot.
  • an additional braking device is also provided between the separating device and the presser foot, to which a drive is assigned. This additional braking device is
  • the invention is therefore based on the object of developing a generic sewing machine to the effect that after cutting off the rear end of the respective sewn-on rubber band, it is not necessary to re-insert the rubber band into the inlet opening of the presser foot.
  • Fig. 1 is a schematic representation of the essential
  • FIGS. 2a and 2b are schematic representations of the separating device for cutting off the rubber band.
  • the sewing machine shown schematically in FIG. 1 is particularly suitable for sewing a rubber band to a tubular end section of a garment made of an elastic textile material to form an endless, elastic waistband.
  • a base plate 10 serving as a base for the material to be sewn is rigidly connected to the frame of the sewing machine.
  • a feed dog 12 for the advancement of the sewing material is movably mounted in an opening of the base plate 10.
  • the base plate 10 is also provided with an opening 14 for receiving a sewing needle 16.
  • the electric drive for the feed dog 12 and the sewing needle 16 is designed in a known manner and is not shown in the drawing for reasons of clarity.
  • a presser foot 18 is mounted in the frame of the sewing machine at right angles to the base plate 10 and can be moved up and down.
  • the presser foot 18 is provided in the front area with an inlet opening 22 for a rubber band 24 which is supplied from a supply (not shown).
  • a separating device 26 for cutting the rubber band, the construction of which will be explained in more detail below.
  • the separating device 26 comprises a cylinder 30 which in a sleeve 32 is rotatably mounted.
  • the sleeve 32 is rotatably inserted in the presser foot 18 and has two diametrically opposite slots 34, 36 which are aligned with an inlet opening 22 and with an outlet opening of the presser foot 18. If the presser foot 18 does not have its own outlet opening, then this is formed by the slot 36 of the sleeve 32.
  • the cylinder 30 is penetrated by a channel 38, the walls of which are inclined like a funnel on the inlet side.
  • outlet side of the channel 38 is aligned with the outlet slot 36 of the sleeve 32 only in a certain angular position of the cylinder 30, whereas the inlet side of the channel 38 is aligned with the inlet slot 34 as a result of the Kenyan expansion over a larger angular range of the cylinder 30
  • Sleeve 32 is aligned.
  • a cutting knife 40 is arranged in the presser foot 18, the cutting edge of which is located next to the outlet slot 36 of the sleeve 32.
  • a pneumatic cylinder 42 which is supported on the frame of the machine and whose piston rod 44 is articulated to a radially projecting arm of the cylinder 30, serves to rotate the cylinder 30 relative to the sleeve 32.
  • the piston rod 44 has a length such that the up and down movement of the presser foot 18 relative to the base plate 10 does not result in any significant rotation of the cylinder 30.
  • a braking device 48 is provided at some distance above the presser foot 18, which at the same time has the function of a guiding device.
  • the braking device 48 has two clamping bodies 50 and 52 which receive the rubber band 24 between them.
  • the provided with an opening for the supply of the rubber band 24 Clamping body 52 is designed in the manner of a double-armed lever and pivotally connected to the clamping body 50.
  • the clamping body 52 is loaded with the force of a compression spring 54 against the clamping body 50.
  • the prestressing force of the compression spring 54 can be adjusted in order to be able to adapt the braking force exerted by the two clamping bodies 50 and 52 to the rubber band 24 fed between them and thus the tension of the rubber band to the respective requirements.
  • the free end of the movable clamping body 52 which is remote from the presser foot 18 is articulated to the piston rod of a pneumatic cylinder 56 which in turn is supported on the clamping body 50. By pulling the piston rod into the pneumatic cylinder 56, the movable clamping body 52 can consequently be pivoted against the force of the compression spring 54 in order to release the rubber band 24 so that it can relax.
  • the clamping body 50 is pivotally connected behind the presser foot 18 in the feed direction of the textile material 46 and approximately at its height with the frame of the machine. This positioning of the clamping body 50 ensures that its free end moves substantially in the direction of the inlet opening 22 of the presser foot 19 when it is pivoted.
  • a pneumatic cylinder 58 which is supported on the frame of the machine and whose piston rod is connected in an articulated manner to the adhesive body 50 at a distance from its pivot point, is used to pivot the clamping body 50.
  • a compressed air nozzle 60 is arranged, which faces the front end of the presser foot 18 and is inclined to the underside thereof.
  • the compressed air flowing out of the nozzle 60 is intended to deflect the front end of the rubber band 24 emerging from the raised presser foot 18 toward the rear toward the feed dog 12.
  • a solenoid valve (not shown) which only releases the flow when the presser foot 18 is in its raised position.
  • the compressed air nozzle 60 it is not necessary for the compressed air nozzle 60 to be arranged in the base plate 10 in the manner shown, but other arrangements are also possible which ensure that the free end of the rubber band from the compressed air flow towards the rear against the underside of the Presser foot is deflected.
  • the pneumatic cylinders 20, 42, 56 and 58 are connected to a compressed air source via lines (not shown). Solenoid valves are arranged in each of these lines and can be controlled by the operator with a single foot pedal. By correspondingly actuating the foot pedal, on the one hand the solenoid valves for the pneumatic cylinders 42 and 56 can be opened and closed together, and on the other hand the solenoid valves for the pneumatic cylinders 20 and 58 can be opened and closed together.
  • the arrangement is such that the pressure change in the pneumatic cylinders 42 and 58 compared to the pneumatic cylinders 56 and 20 takes place with a certain delay. This can be achieved in a simple manner by providing the lines leading to the pneumatic cylinders 42 and 58 with throttles.
  • the presser foot 18 is in its raised position, the engaged braking device 48 in the lowered position and the separating device 26 in the inactive position and that a free end of the rubber band 24 protrudes from the underside of the presser foot 18. Since the compressed air nozzle 60 is connected to the compressed air source when the presser foot 18 is raised, this is eliminated the free end of the rubber band 24 projecting from the presser foot 18 is deflected backwards by the escaping compressed air against the underside of the presser foot. By corresponding actuation of the foot switch, the pneumatic cylinder 20 is then pressurized with compressed air in order to lower the presser foot 18 so that it presses the rubber band 24 against the textile fabric 46 lying on the base plate 10 and thus holds it there.
  • the braking device 48 Since the braking device 48 is engaged, that is to say the movable clamping body 52 is loaded with the force of the compression spring 54 against the clamping body 50, the supply of the rubber band 24 is braked and this is thereby fed in the stretched state.
  • the textile fabric 46 is the tubular end section of a garment, for example the leg section of a swimsuit or the like. Like. acts, an elastic waistband is created in this way. Shortly before the rubber band sewn onto the fabric with its front end overlaps the supplied rubber band, that is to say at the front end of the presser foot 18, the pneumatic cylinder 56 is acted upon by corresponding actuation of the foot switch in order to disengage the braking device 48. so that the front end portion of the supplied rubber band 24 is de-energized. This actuation of the foot switch has the consequence that the pneumatic cylinder 42 is also pressurized with compressed air with a certain delay, so that the cylinder 30 relative to the sleeve 32
  • the separating device 26 is rotated from the position in FIG. 2a to the position shown in FIG. 2b.
  • the rubber band located in the channel 38 of the cylinder 30 is therefore pressed against the edge of the cutting knife 40 and severed.
  • the tension-free rear end region of the elastic band 24 is then sewn to the fabric 46, overlapping the front end region sewn on in the stretched state. Because of that.
  • the sewing process is now complete and an endless elastic band has been formed on the garment.
  • the drives of the feed dog 12 and the sewing needle 16 are switched off and the separating device 26 is returned to the ineffective position and the braking device 48 to the active position.
  • the pneumatic cylinders 20 and 58 are pressurized with compressed air, whereby the presser foot 18 is raised and the entire brake device 48 is pivoted downward with a certain delay.
  • the result of this is that the front end region of the rubber band 24, which is still located in the presser foot, is pushed downward out of the latter and is deflected backwards against the underside of the presser foot under the influence of the compressed air now flowing out of the nozzle 60.
  • the sewing machine is now ready to perform another sewing operation to form an endless elastic waistband.
  • the pneumatic cylinder used to actuate the separating device can be rigidly attached to a swivel arm carrying the presser foot.
  • the pneumatic cylinder makes all the movements of the swivel arm and thus of the presser foot without influencing the separating device.
  • This modification like the exemplary embodiment shown, enables the constructive advantage that the area in front of and on both sides of the presser foot remains free. The operator can therefore monitor the sewing process in an optically correct manner and bring the fabric directly to the presser foot with his fingers. This allows a very precise sewing of the rubber band along the edge of the fabric.

Landscapes

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

Abstract

Machine à coudre pour coudre une bande de caoutchouc à une partie terminale, en forme de tuyau, d'un vêtement en matière textile élastique en vue de former un ruban élastique sans fin. La machine à coudre comporte un pied de biche (18) présentant une ouverture d'introduction (22) de la bande de caoutchouc (24), un dispositif de freinage (48) s'opposant au mouvement d'amenée de ladite bande et pourvu de deux éléments de serrage (50, 52) se saisissant de la bande, et un système de coupe (26), pouvant être entraîné par moteur, pour couper la bande de caoutchouc. Pour empêcher, après cette coupe, une nouvelle introduction de la bande (24) dans l'ouverture (22) du pied de biche (18), le système de coupe (26) est disposé derrière l'ouverture d'introduction (22) du pied de biche (18) et sur ce dernier, et un entraînement (56) est adjoint au dispositif de freinage (48), afin d'augmenter l'écartement des deux éléments de serrage (50, 52) immédiatement avant l'actionnement du système de coupe (26).
EP87905611A 1986-08-25 1987-08-25 Machine a coudre pour coudre une bande de caoutchouc Expired - Lifetime EP0278967B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3628829A DE3628829C1 (de) 1986-08-25 1986-08-25 Naehmaschine zum Annaehen eines Gummibandes
DE3628829 1986-08-25

Publications (2)

Publication Number Publication Date
EP0278967A1 true EP0278967A1 (fr) 1988-08-24
EP0278967B1 EP0278967B1 (fr) 1991-05-29

Family

ID=6308127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87905611A Expired - Lifetime EP0278967B1 (fr) 1986-08-25 1987-08-25 Machine a coudre pour coudre une bande de caoutchouc

Country Status (5)

Country Link
US (1) US4909165A (fr)
EP (1) EP0278967B1 (fr)
JP (1) JPH01500644A (fr)
DE (1) DE3628829C1 (fr)
WO (1) WO1988001660A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706996C1 (de) * 1986-10-22 1988-07-21 Union Speical Gmbh Abschneidvorrichtung an einer Naehmaschine
DE3642863A1 (de) * 1986-12-16 1988-06-30 Daimler Benz Ag Zusatzeinrichtung fuer naehmaschinen
IT1231885B (it) * 1987-10-09 1992-01-15 Rockwell Rimoldi Spa Macchina per cucire polifunzionale.
US5202311A (en) * 1988-08-19 1993-04-13 Children's Medical Center Corporation Stabilized fgf composition
JPH08332291A (ja) * 1995-06-07 1996-12-17 Singer Nikko Kk ミシンの押さえ装置
DE10023537A1 (de) * 2000-05-13 2001-11-22 Schips Ag Naehautomation Tueba Verfahren zum Betrieb einer Nähmaschine mit Elastikband-Zuführung und eine danach arbeitende Nähmaschine
JP2014087441A (ja) * 2012-10-30 2014-05-15 Brother Ind Ltd ミシン
CN106048915A (zh) * 2016-08-09 2016-10-26 厦门市宏迪机电设备有限公司 橡筋缝接机的旋转翻折结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094089A (en) * 1960-11-03 1963-06-18 Shuman Abraham Presser foot
US3149589A (en) * 1961-08-03 1964-09-22 Sr Gilbert Fowler Combination sewing machine ribbon cutter and cloth trimming attachment
US3468269A (en) * 1967-05-01 1969-09-23 Frederic P Worthen Method and apparatus for cutting tape in sewing machine
US3847099A (en) * 1972-08-18 1974-11-12 Pfaff Ind Masch Ribbon feeding attachment for sewing machines
IT1002361B (it) * 1973-12-27 1976-05-20 Rimoldi Virginio E C Spa Dispositivo per tagliare ed inse rire una fettuccia sotto il piedi no pressore di una macchina per cucire
DE3410181C2 (de) * 1984-03-20 1986-07-17 Helmut Tübach Schips Nähmaschine

Also Published As

Publication number Publication date
DE3628829C1 (de) 1988-02-11
JPH01500644A (ja) 1989-03-09
EP0278967B1 (fr) 1991-05-29
US4909165A (en) 1990-03-20
WO1988001660A2 (fr) 1988-03-10

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