EP0428139A1 - Dispositif pour coudre un élastique à une pièce d'étoffe - Google Patents

Dispositif pour coudre un élastique à une pièce d'étoffe Download PDF

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Publication number
EP0428139A1
EP0428139A1 EP90121724A EP90121724A EP0428139A1 EP 0428139 A1 EP0428139 A1 EP 0428139A1 EP 90121724 A EP90121724 A EP 90121724A EP 90121724 A EP90121724 A EP 90121724A EP 0428139 A1 EP0428139 A1 EP 0428139A1
Authority
EP
European Patent Office
Prior art keywords
fabric
sewing
rubber band
sewing machine
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90121724A
Other languages
German (de)
English (en)
Inventor
Helmut Schips
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.)
Schips AG Nahautomationen
Schips AG Naehautomation
Original Assignee
Schips AG Nahautomationen
Schips AG Naehautomation
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 Schips AG Nahautomationen, Schips AG Naehautomation filed Critical Schips AG Nahautomationen
Publication of EP0428139A1 publication Critical patent/EP0428139A1/fr
Withdrawn legal-status Critical Current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
    • D05B35/06—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding
    • D05B35/062—Work-feeding or -handling elements not otherwise provided for for attaching bands, ribbons, strips, or tapes or for binding with hem-turning
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B25/00—Sewing units consisting of combinations of several sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2209/00—Use of special materials
    • D05D2209/14—Brushes
    • 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

Definitions

  • the invention relates to a device for sewing rubber hems on pieces of fabric according to the preamble of claim 1.
  • Such devices are used in particular in the manufacture of underwear, but also in the manufacture of swimsuits, sports pants and the like.
  • a device is described in DE-OS 37 04 856.
  • a rubber band is formed along an edge, preferably with the aid of a device designed as a tandem machine of the piece of fabric sewn on.
  • the edge of the piece of fabric is then folded over in such a way that the rubber band forms a triple layer with the edge of the fabric.
  • This triple layer is finished with a second sewing machine either with single stitching or with double stitching.
  • the known device is specifically concerned with the problem of sewing the rubber band and the fabric without wrinkles.
  • a gas nozzle arrangement is provided in the area of the sewing point of the second sewing machine, which blows the material away from the sewing point and therefore also away from the triple layer, that is to say causes a fabric tightening.
  • Straight seams can be sewn relatively easily, both line seams and circular seams. So-called tandem machines are preferably used. However, problems arise with so-called curved seams, which are seams that are more or less curved in the fabric plane. Curved seams have the tendency that the "triple layer" opens after prefixing the elastic and before finished sewing. While with straight seams the triple layer remains practically closed before the finished sewing, i.e. the elastic band remains covered by the folded fabric edge area, the triple layer opens with curved seams, so that one has previously been forced to sew curved seams in two single work steps. Accordingly, not only two machines are necessary, but two workplaces are required, so that curved seams have so far been practically twice as expensive to produce Stitching.
  • the invention has for its object to provide a device for sewing rubber hems on pieces of fabric of the type mentioned, with which curved seams can be made with good quality.
  • the folding device is designed as a baffle plate immediately downstream of the first sewing machine, from the outlet end of which the triple layer rotated by approximately 180 ° is subtracted by means of a pair of transport rollers, and between the pair of transport rollers and the second sewing machine a deflection roller is arranged, which deflects the triple layer from its horizontal path of movement.
  • the device according to the invention is designed in particular as a tandem machine. Both “sewing machines” are operated synchronously, as are the pair of transport rollers and the deflection roller.
  • the deflecting roller deflects the semi-finished hem, i.e. the triple layer from the fabric edge area / elastic band / fabric transfer area, from the actual horizontal movement path, with the result that the triple layer is tensioned and its opening between the first and the second sewing machine is prevented.
  • the closed triple layer is fed to the second sewing machine and can be sewn correctly there.
  • the transport rollers preferably have horizontal axes of rotation. To be particularly advantageous it has been found if the pair of transport rollers is arranged on the first sewing machine and contains a lower, rigid roller and an upper roller which is tensioned with spring force against the lower roller. With this transport roller arrangement, the triple layer is safely removed from the first sewing machine and transported further.
  • Maintaining the closed state of the triple layer is particularly promoted in that the deflection roller is driven against the direction of travel of the triple layer, the deflection roller preferably being driven by the same motor as the transport rollers.
  • the triple layer between the first and second sewing machines remains closed and is fed closed to the second sewing point, where the hem is finished.
  • such an arrangement of the deflection roller may be sufficient that the triple layer is deflected only about 20 ° relative to the horizontal, but in special cases the deflection roller can be arranged such that a deflection of up to 60 ° relative to the horizontal he follows.
  • the folding device is designed as a reversing plate which is arranged downstream of the first sewing machine and has an approximately U-shaped cross section, between the inlet end facing the first sewing machine and the outlet end facing the second sewing machine is rotated by about 180 ° along the longitudinal axis.
  • the transport rollers and the deflection roller can be dispensed with.
  • the baffle is a curved plate, through the U-shaped cross section of the turning plate according to this embodiment, a guide channel is created, the lateral opening at the inlet end of which allows the fabric to pass through, while the edge region of the fabric with the fixed elastic band runs between the two legs of the "U".
  • the edge area is turned during further transport between the first and second sewing machines. If the edge area of the fabric was initially over the rubber band, this edge area reaches under the rubber band due to the turning process, and another strip of the fabric edge is then formed to form the triple layer above the rubber band, while the fabric area of the outlet end of the turning plate extends over the outer surface of the one leg of the "U" is running.
  • the turning plate can be relatively short. An approximately 250 mm long turning plate can be arranged just behind the first sewing machine, for example 25 mm behind the first sewing point, while the outlet end is approximately 50 mm in front of the second sewing point.
  • the feed device which feeds the triple layer to the second sewing point for finished sewing has a spacer element which projects into the triple layer in front of the sewing point, i.e. engages, and creates a predetermined clearance between the rubber band and the inner region of the folding edge.
  • This free space takes into account the reduced cross-section of the rubber band when sewing and creates space for the subsequent expansion of the rubber band to the original cross-section.
  • the rubber band again enlarged in cross section, fills the free space created by the spacer element, so that corrugated seams are reliably prevented.
  • the spacer element is preferably a spacer plate with a sliding edge.
  • the spacer element is particularly advantageous when a fabric tensioner is provided at the same time.
  • this can be, for example, a gas nozzle arrangement, as is proposed, for example, in the aforementioned DE-OS 37 04 856.
  • the fabric tensioner is a driven round brush that brushes the fabric away from the triple layer - essentially at right angles to it.
  • Fig. 1a shows schematically a piece of fabric with a straight seam 2.
  • Fig.1b shows a piece of fabric with a curved seam 4.
  • the seam 4 is curved in the plane of the piece of fabric.
  • both seam types 2 and 4 can be made in good quality.
  • the seams shown in Figs. 1a and 1b are so-called line seams, i.e. open seams at both ends. Closed seams, so-called circular seams, can also be produced with the device according to the invention. In the present case, the seams are rubber hems.
  • Fig. 2 shows what the area of the later rubber hem looks like after pre-fixing.
  • pre-fixing here includes the provisional attachment of a rubber band to the fabric so that the rubber hem is later sewn with a double-needle machine, but the term “pre-fixing” can also be understood here to mean that the rubber band is first sewn on the fabric is attached, whereupon a second seam is added after the edge of the fabric has been folded over.
  • a rubber band 6 is pre-fixed to a piece of fabric 8 along an edge 10 of the fabric 8 with a seam 12, the stitch seam 12 running approximately parallel to the edge 10 and close to this edge and on a longitudinal edge of the rubber band 6.
  • Fig. 3 shows the state in which the rubber band together with a one-sided fabric area according to arrow A in Fig. 2 has been rotated by 180 °. So a triple layer 14 was created, consisting of a fabric edge area 16, the rubber band 6 and a fabric folding area 18, the rubber band 6 lying between the fabric areas 16 and 18 and the fabric 8 being wrapped around the longitudinal edge 20 of the rubber band 6 facing away from the stitch seam 12.
  • the fabric 18 leads away from the triple layer 14 as a continuation of the fabric transfer area 18. With 22, two needles of a sewing machine are indicated, with which the triple layer 14 is finished sewing, both seams of the finished sewing being parallel to one another and relatively close to the two longitudinal edges of the rubber band 6 run.
  • FIG. 4 shows the detail IV from FIG.
  • a free space L is kept free in the area of the sewing point at which the rubber hem is finished sewing.
  • the reason for the free space L is as follows: during sewing, the rubber band 6 is stretched, which is accompanied by a reduction in the cross section of the rubber band. After finished sewing, the rubber band relaxes and returns to the relatively large cross-section.
  • Fig. 7 shows a schematic representation of a tandem machine 24 with which the rubber hem shown in Figs. 3, 4 and 5a can be largely automatically manufactured.
  • the tandem machine 24 according to FIG. 7 comprises a first sewing machine 26a on the right in FIG. 7 and a second sewing machine 26b on the left in FIG. 7.
  • the sewing material is transported from right to left.
  • the two sewing machines 26a and 26b can be designed similarly as parts of the tandem sewing machine. They are preferably driven synchronously. The same parts in both machines 26a and 26b are only described in more detail once.
  • the first sewing machine 26a contains a sewing material support base 28a as an essential component.
  • a needle head 30 with a sewing needle 22a and a sewing foot 32 are located on the arm.
  • the material transport means are not shown in the drawing.
  • the material comprises the rubber band 6 and a piece of fabric 8, which is shown here as partially cut away, so that details of the tandem machine 24 can be seen better.
  • the sewing material is guided past the sewing point over the sewing material support base 28a in the manner shown in FIG. 2, so that after leaving the sewing point there is exactly the double layer shown in FIG. 2.
  • the edge area is rotated 180 ° about its own longitudinal axis on a guide plate 34 directly adjoining the sewing point of the first sewing machine 26a. From an outlet end 35 of the guide plate 34, the triple layer 14 (see FIG. 3) is removed by a pair of transport rollers pulled.
  • the pair of transport rollers is arranged at the end of the sewing material support base 28a.
  • a lower transport roller 38 is rigidly mounted on the sewing machine.
  • An upper transport roller 36 is pressed against the lower transport roller 38 with the aid of a spring arrangement, not shown here.
  • the rollers rotate in the direction indicated by arrows, so that the material 6, 8 is moved to the left.
  • a deflection roller 40 between the two sewing material support bases 28a and 28b of the two sewing machines, which is driven counter to the running direction of the sewing material 6, 8.
  • the axes of the transport rollers 36 and 38 like the axis of rotation of the deflection roller 40, are oriented horizontally and perpendicular to the plane of the drawing.
  • the position of the deflection roller 40 is selected such that the triple layer is deflected from the otherwise practically horizontal transport path, the angle here being supposed to be approximately 35 °.
  • the deflection roller 40 is driven by the same DC motor as the transport rollers 36, 38, but the direction of rotation of the deflection roller 40 is opposite to the movement of the sewing material. This ensures that the triple layer remains closed even with curved seams, ie essentially has the configuration outlined in FIG. 3. This is particularly important in the area in which the triple layer of the sewing point is fed to the second sewing machine 26b.
  • the needle head 30b is equipped, for example, with a double needle 22b which, according to FIG. 3, firmly connects the rubber band to the fabric.
  • the second sewing machine 26b has a fabric pretensioner, which is designed here as a round brush 36 which sits at the end of a shaft 44 which is held and rotated by a carrier / drive 42.
  • the round brush 46 rotates in the direction of an arrow indicated direction to pull the fabric 8 away from the sewing point.
  • FIG. 6 essentially shows the feed device of the sewing machine 26b.
  • An outer body 56 is adjustably arranged on a curved inner body of the sewing support base 28b.
  • a shoulder 55 of the inner body, in conjunction with the left edge of the outer body in FIG. 6, forms a groove 58, the width d of which is determined by appropriate adjustment of the outer body 56.
  • From the inner body 54 protrudes a spacer 50, which is approximately U-shaped and with the end of its upper leg protrudes into the triple layer in front of the sewing point, so that it has a sliding edge 52 formed at the end of the U-leg on the inner folding edge of the Fabric.
  • the rubber band has a certain distance from this inner edge.
  • the space designated by L in FIG. 4 is formed between the elastic band and the folding edge of the fabric.
  • the round brush 46 is slightly inclined so that the fabric is brushed away from the sewing point to the left and somewhat in the direction of transport of the sewing material. This makes the fabric smooth in the area of the sewing point.
  • the fabric 8 can rest on a table-like extension 28 'of the material support base.
  • the spacer 50 can be omitted if the rubber band is not very elastic. Then the round brush 46 ensures that the fabric fits snugly against the longitudinal edge 20 of the rubber band, so as to prevent the seam from curling.
  • FIG. 8 shows a simplified and therefore preferred embodiment compared to the embodiment according to FIG. 7.
  • the folding device here consists of a turning plate 60 which has a U-shaped cross section, the depth between the legs of the "U” being somewhat greater than the width of the rubber band 6. (The same reference numerals as in FIG. 7 denote corresponding parts and become not described again here).
  • the turning plate 60 is arranged with its inlet side 61 just behind the sewing point of the first sewing machine 26a. 8 one looks into the open channel in the area of the inlet end 51.
  • the U-shaped cross section makes a rotation about the longitudinal axis by 180 °, so that at the outlet end 62 of the turning plate 60 the lateral opening points into the plane of the drawing.
  • Fig. 9 clearly shows the U-shaped cross section at the inlet end.
  • the edge region of the piece of fabric 8 with the rubber band 6 fixed thereon enters the turning plate 60.
  • the edge area and the rubber band 6 are rotated by 180 °, so that at the outlet end 62 the previously located edge area of the fabric is now at the bottom, while a laterally adjacent strip of the fabric is now on top of the rubber band 6, as is essentially shown in FIG. 4 and 5a.
  • FIG. 8 by folding or folding the edge area with the fixed rubber band 6, the piece of fabric 8 is pulled up a little in the plane of the drawing, since the lateral opening of the "U" due to the rotation in the transport direction (from right to left in FIG. 8 ) describes a right-hand screw.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP90121724A 1989-11-13 1990-11-13 Dispositif pour coudre un élastique à une pièce d'étoffe Withdrawn EP0428139A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP89121012 1989-11-13
EP89121012 1989-11-13

Publications (1)

Publication Number Publication Date
EP0428139A1 true EP0428139A1 (fr) 1991-05-22

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ID=8202121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121724A Withdrawn EP0428139A1 (fr) 1989-11-13 1990-11-13 Dispositif pour coudre un élastique à une pièce d'étoffe

Country Status (3)

Country Link
US (1) US5203268A (fr)
EP (1) EP0428139A1 (fr)
JP (1) JPH03289992A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106757804A (zh) * 2016-12-29 2017-05-31 苏州匠博智能科技有限公司 一种地垫包缝装置
CN108468160A (zh) * 2018-05-31 2018-08-31 浙江凌志智能科技有限公司 一种用于自动缝合压线机的翻边机构
CN110438675A (zh) * 2019-07-12 2019-11-12 苏州澳拓美盛自动化设备有限公司 自动地毯包边机
CN113512826A (zh) * 2021-06-26 2021-10-19 南通东润实业有限公司 一种用于缝制面料包边的工件
CN113638136A (zh) * 2021-08-12 2021-11-12 广州市联柔机械设备有限公司 缝线袋装弹簧的制造设备及制造方法
CN115897082A (zh) * 2022-12-08 2023-04-04 立讯智造科技(常熟)有限公司 柔性带固定治具及柔性带固定方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617678U (ja) * 1992-08-05 1994-03-08 今治キンダイ株式会社 長尺物の両側縁部の縫製機
US5540166A (en) * 1994-03-16 1996-07-30 Diversified Systems, Inc. Edge steer finishing device and method
US5704304A (en) * 1994-05-27 1998-01-06 Burton & Noonan Level lining apparatus and method
US5572940A (en) * 1994-05-27 1996-11-12 Burton & Noonan Folding and sewing apparatus
US5893204A (en) 1996-11-12 1999-04-13 Dresser Industries, Inc. Production process for casting steel-bodied bits
WO2008087625A2 (fr) 2007-01-21 2008-07-24 Rahimi Textile Technologies Ltd. Collage de vêtements au moyen d'élastomères et procédé de production associé
CN111876916B (zh) * 2020-08-01 2022-04-05 浙江宁玥科技有限公司 一种抗菌防螨面料及面料制备方法与面料制备系统

Citations (2)

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Publication number Priority date Publication date Assignee Title
GB1445391A (en) * 1973-04-02 1976-08-11 Automatic Braiding Co Manufacture of garments
DE8908766U1 (de) * 1989-07-19 1989-09-21 Zawischka, Dieter, 7410 Reutlingen Nähvorrichtung

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GB1406822A (en) * 1972-06-21 1975-09-17 Automatic Braiding Co Garments
FR2393869A1 (fr) * 1977-06-06 1979-01-05 Hellin Jean Equipement de machines a coudre a deux aiguilles pour la pose de ceintures et machines dotees de cet equipement
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FR2521604A1 (fr) * 1982-02-12 1983-08-19 Amf Inc Dispositif pour l'execution automatique des ourlets aux extremites libres des parties tubulaires des vetements
US4458610A (en) * 1982-11-01 1984-07-10 Consolidated Foods Corporation Folding apparatus
DE8516184U1 (de) * 1985-06-03 1985-07-18 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern Führungsvorrichtung für das Nähgut an Nähmaschinen
JPS62295686A (ja) * 1986-06-16 1987-12-23 日本ユニオンスペシヤル株式会社 縫製装置
GB2201432B (en) * 1987-02-26 1991-06-05 Automatic Braiding Ltd Feeding device for a sewing machine
GB2229199B (en) * 1989-03-16 1991-04-17 Automatic Braiding Ltd Enclosing elastic in a fabric

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1445391A (en) * 1973-04-02 1976-08-11 Automatic Braiding Co Manufacture of garments
DE8908766U1 (de) * 1989-07-19 1989-09-21 Zawischka, Dieter, 7410 Reutlingen Nähvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106757804A (zh) * 2016-12-29 2017-05-31 苏州匠博智能科技有限公司 一种地垫包缝装置
CN108468160A (zh) * 2018-05-31 2018-08-31 浙江凌志智能科技有限公司 一种用于自动缝合压线机的翻边机构
CN110438675A (zh) * 2019-07-12 2019-11-12 苏州澳拓美盛自动化设备有限公司 自动地毯包边机
CN113512826A (zh) * 2021-06-26 2021-10-19 南通东润实业有限公司 一种用于缝制面料包边的工件
CN113638136A (zh) * 2021-08-12 2021-11-12 广州市联柔机械设备有限公司 缝线袋装弹簧的制造设备及制造方法
CN115897082A (zh) * 2022-12-08 2023-04-04 立讯智造科技(常熟)有限公司 柔性带固定治具及柔性带固定方法

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Publication number Publication date
JPH03289992A (ja) 1991-12-19
US5203268A (en) 1993-04-20

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