EP0028210A1 - An improved cutting device of cloth fringes on an overlock-type sewing machine - Google Patents

An improved cutting device of cloth fringes on an overlock-type sewing machine Download PDF

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Publication number
EP0028210A1
EP0028210A1 EP80850159A EP80850159A EP0028210A1 EP 0028210 A1 EP0028210 A1 EP 0028210A1 EP 80850159 A EP80850159 A EP 80850159A EP 80850159 A EP80850159 A EP 80850159A EP 0028210 A1 EP0028210 A1 EP 0028210A1
Authority
EP
European Patent Office
Prior art keywords
cloth
cutting device
overlock
sewing
fringe
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Withdrawn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
EP80850159A
Other languages
German (de)
English (en)
French (fr)
Inventor
Sukeo Mori
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 EP0028210A1 publication Critical patent/EP0028210A1/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D05B37/10—Cutting devices with heated tools
    • 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
    • D05D2305/50—Removing cut-out material or waste

Definitions

  • the present invention relates to an improved cutting device of cloth fringes on an overlock-type sewing machine, and more particularly relates to an improved device for beautifully cutting and removing surplus fringe section of a cloth made of synthetic fibers during sewing operation on a machine suited for darn sewing of such cloth fringes, i.e. on a so-called loverlock-type sewing machine.
  • the sewing machine has to be provided with a cutting device of cloth fringes.
  • a cutting device is generally provided with a pair of cutting blades, one being swingable and the other stationary.
  • a heat cutter in the form of a wire is arranged in the travelling course of a cloth fringe on the upstream side of a sewing needle for cutting of the surplus fringe section and accompanied with a pneumatic suction mouth for removal of the cut surplus fringe section.
  • FIG. 1 One typical example of the sewing station on the conventional overlock-type sewing machine is shown in Fig. 1.
  • the station is provided on a horizontal needle plate C and a cloth forwarding element D arranged on the needle plate C.
  • A-sewing needle A is arranged over the needle plate C for vertical reciprocation.
  • a swingable arm B is arranged near the sewing needle A and operable connected to the main drive shaft (not shown) of the machine for a prescribed swing motion.
  • An upper movable cutter blade K is integrally mounted to the free end of the arm B and a lower stationary cutter blade K' is secured sideways to the needle plate . C for cutting of cloth fringes in cooperation with the movable cutter blade K.
  • One embodiment of the cutting device in accordance with the present invention is attacked to an overlock-type sewing machine as shown in Fig. 2, in which the sewing machine is as usual provided, in addition to the above-described elements A, C and D, a cloth pressor E arranged over the cloth forwarding element D, a yarn tension controller F and sewing yarns Y delivered from their supply bobbins. These elements are all mounted on a pedestal G of the machine.
  • the cutting device of the present invention is generally indicated with a reference numeral 10.
  • the cutting device 10 includes a substantially vertically arranged suction pipe 11 which is connected to a given pneumatic suction source (not shown) and has a bent top section lla with an open suction mouth llb directed to the sewing station of the machine.
  • the suction mouth llb is spanned by a heat cutter 12 made of a nickel-chrome wire.
  • the suction pipe 11 is adjustably mounted to the pedestal G of the machine by a proper fastener 13.
  • the construction of the cutting device 10 is shown in more detail in Figs. 3 through 5.
  • the free end of the bent top section lla is chamfered by a vertical plane with respect to its axis in order to provide the suction mouth llb and the heat cutter 12 is arranged vertically across the suction mouth llb as close to the needle plate C as possible.
  • the side of the free end of the bent top section lla facing a stitch tongue H is closed.
  • the heat cutter 12 is located on the upstream side of the sewing needle A along the travelling course of the_cloth fringe to be sewn and the suction mouth llb of the suction pipe 11 opens facing the upstream side of the heat cutter 12 as clearly shown in Fig. 3.
  • the surplus section of the cloth fringe is continuously separated by contact with the heat cutter 12 . from the remaining section of the cloth fringe to be sewn by the sewing needle A, and the separated section of the cloth fringe is sucked into the suction mouth llb for removal off the station via the suction pipe 11.
  • the cutting device of the present invention employs a cutting element, i.e. the heat cutter 12, which requires no replacement of sharpening. Cutting of the cloth fringe by heating causes fusion of the component fibers which well prevents unfavourable displacement between the superimposed cloth fringes and forms a fortified sew line. Close arrangement of the heat cutter to the needle plate allows high tension of the sewing yarn and smaller dimension of the stitch tongue, which assures formation of a further fortified sew line and beautiful appearance of the sewn fringe.
  • the stationary arrangement of the cutting elements, i.e. the heat cutter results in a remarkably simplified construction when compared with the conventional one employing the movable cutter blade. Further, the arrangement of the suction mouth on the upstream side of the sewing needle reliably prevents reach of the separated surplus fringe section to the sewing point, which otherwise would seriously disturb normal sewing operation.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP80850159A 1979-10-26 1980-10-23 An improved cutting device of cloth fringes on an overlock-type sewing machine Withdrawn EP0028210A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP149208/79 1979-10-26
JP14920879U JPS5669278U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1979-10-26 1979-10-26

Publications (1)

Publication Number Publication Date
EP0028210A1 true EP0028210A1 (en) 1981-05-06

Family

ID=15470188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80850159A Withdrawn EP0028210A1 (en) 1979-10-26 1980-10-23 An improved cutting device of cloth fringes on an overlock-type sewing machine

Country Status (2)

Country Link
EP (1) EP0028210A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5669278U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829920A (en) * 1987-02-23 1989-05-16 Pfaff Industriemaschinen Gmbh Method and apparatus for positioning and holding a thread chain
CN103526465A (zh) * 2013-09-18 2014-01-22 吴江市千千和纺织有限公司 缝纫机切线装置
CN103526461A (zh) * 2013-09-18 2014-01-22 吴江市千千和纺织有限公司 纺织用缝纫机
CN105908382A (zh) * 2016-05-10 2016-08-31 安徽省萧县徽星机械制造有限公司 一种棉被裁切封口机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2594603Y2 (ja) * 1993-12-28 1999-05-10 ジューキ株式会社 ミシンの送り歯

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312142A (fr) * 1952-03-05 1955-12-31 Limited Autoseam Overseas Procédé pour l'assemblage par couture, après découpage, de pièces de tissus constitués au moins en partie par des fibres en résine synthétique thermoplastique, et appareil pour la mise en oeuvre de ce procédé.
FR1116608A (fr) * 1954-12-28 1956-05-09 Vikene & Cie Ets Machine à coudre les articles en fils synthétiques de superpolyamides et matières analogues
US3142279A (en) * 1962-10-05 1964-07-28 Tek Matic Corp Electric resistant thread-trimming device
US3304897A (en) * 1964-12-03 1967-02-21 Rubin Julius Sewing machine having thread trimming device mounted thereon
CH560273A5 (en) * 1973-02-12 1975-03-27 Flexy Strumpffabrik Ag Sewing machine waste extraction system - has an air pressure tube to generate suction flow in extraction tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH312142A (fr) * 1952-03-05 1955-12-31 Limited Autoseam Overseas Procédé pour l'assemblage par couture, après découpage, de pièces de tissus constitués au moins en partie par des fibres en résine synthétique thermoplastique, et appareil pour la mise en oeuvre de ce procédé.
FR1116608A (fr) * 1954-12-28 1956-05-09 Vikene & Cie Ets Machine à coudre les articles en fils synthétiques de superpolyamides et matières analogues
US3142279A (en) * 1962-10-05 1964-07-28 Tek Matic Corp Electric resistant thread-trimming device
US3304897A (en) * 1964-12-03 1967-02-21 Rubin Julius Sewing machine having thread trimming device mounted thereon
CH560273A5 (en) * 1973-02-12 1975-03-27 Flexy Strumpffabrik Ag Sewing machine waste extraction system - has an air pressure tube to generate suction flow in extraction tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829920A (en) * 1987-02-23 1989-05-16 Pfaff Industriemaschinen Gmbh Method and apparatus for positioning and holding a thread chain
CN103526465A (zh) * 2013-09-18 2014-01-22 吴江市千千和纺织有限公司 缝纫机切线装置
CN103526461A (zh) * 2013-09-18 2014-01-22 吴江市千千和纺织有限公司 纺织用缝纫机
CN105908382A (zh) * 2016-05-10 2016-08-31 安徽省萧县徽星机械制造有限公司 一种棉被裁切封口机

Also Published As

Publication number Publication date
JPS5669278U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-06-08

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT

17P Request for examination filed

Effective date: 19810812

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830427