EP0488955B1 - Bâti de machine à coudre - Google Patents

Bâti de machine à coudre Download PDF

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Publication number
EP0488955B1
EP0488955B1 EP91810917A EP91810917A EP0488955B1 EP 0488955 B1 EP0488955 B1 EP 0488955B1 EP 91810917 A EP91810917 A EP 91810917A EP 91810917 A EP91810917 A EP 91810917A EP 0488955 B1 EP0488955 B1 EP 0488955B1
Authority
EP
European Patent Office
Prior art keywords
arm
frame
motor
drive
sleeve
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 - Lifetime
Application number
EP91810917A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0488955A1 (fr
Inventor
Antonio Jimenez
Patrice Deplante
Michel Combepine
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Publication of EP0488955A1 publication Critical patent/EP0488955A1/fr
Application granted granted Critical
Publication of EP0488955B1 publication Critical patent/EP0488955B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/06—Lower casings for free-arm sewing machines

Definitions

  • the present invention relates to sewing machines comprising a frame having two arms with which are associated at least, for the first arm, a needle bar and its drive mechanism and, for the second arm, a loop sensor device, the mechanism drive thereof and a drive mechanism for the material to be sewn.
  • It relates, more particularly, to a machine of this type in which the amplitude and the direction of the drive of the material to be sewn are controlled by an electric motor controlled by an electronic control circuit.
  • Some of these machines have a monolytic frame, in injected cast iron, on which the various components mentioned must be fixed individually and then be subject to the adjustments required for each of them in the context of the technical assembly of which they are part.
  • the resistant framework is present in tubular form and consists of the assembly of two shells obtained by stamping, between which a motor shaft and its bearings are integrated.
  • This latter possibility has proved to be particularly advantageous, in particular in the constitution of a unit in which the shaft and its bearings are those intended for the control of the needle bar of the sewing machine, elements which are thus associated with the framework of its manufacture, more particularly to the upper arm of the framework.
  • the applicant now aims to improve the rationalization of the manufacture and assembly of the elements and members traditionally associated with the lower arm of the frame of a sewing machine of the type mentioned above, characterized, however, by the fact that the sensor device loop, its drive mechanism and said drive mechanism for the sewing material are mounted in a self-contained housing, independent of said lower arm of the frame and by the fact that it comprises means for fixing this housing on the motor body and means for fixing the motor body to the lower arm of the frame.
  • Figure 1 is a sectional elevation of some of its elements.
  • FIG. 2 is a section, on a larger scale, along II-II of FIG. 1.
  • the sewing machine visible in FIG. 1 has a housing 1 formed by assembling two shells, such as shell 1 a , which also constitutes one of the two elements of the frame of the machine, like this which is described and illustrated in Swiss Patent No. 675,600 previously cited.
  • Such a frame is, in fact, constituted by the shell 1 and has a resisting frame U-2 which appears in this case in the form of a tubular body of hexagonal cross-section and removably fastened on the shell through to three devices generically indicated by the reference 3 and whose structural particularities are notably the subject of international patent application PCT / CH91 / 00119 filed on 17.5.1991.
  • This sewing machine usually comprises, in particular, a needle bar 4, a mechanism 5 for controlling the needle bar, a mechanism for driving the sewing material and a loop sensor device, the structural features of which have been shown. schematically in FIG. 2 and which are essentially arranged in a housing 6.
  • the organs mentioned are traditionally driven from a motor 7 by means of a set of pulleys and belts, indicated generically by the reference 8, driving two motor shafts 9 and 10 respectively and passing through the upper arm of the frame 2, for the shaft 9, and the lower arm of the latter, for the shaft 10.
  • the pivoting and maintaining in a centered and horizontal position of the axis 9 in the upper arm of the frame are ensured by two ball bearings mounted inside this arm for example in the manner described in Swiss Patent No. 675,600 to which reference will be made for more details.
  • the sewing machine shown in FIG. 1 is of the type in which the amplitude and the driving direction of the material to be sewn are controlled by an electric motor, in particular a stepping motor, slaved to an electronic control circuit. .
  • This technique is well known to those skilled in the art since it has been used for many years.
  • the stepping motor 11 carries the housing 6 which is fixed to the motor for example by a series of screws of which only the axes 12 are visible in the drawing (fig. 2).
  • the motor 11 comprises a shaft 13 passing through a passage 14 of the housing 6 and at the end of which is cut a pinion 15 engaged with a toothed crown 17 * formed on the periphery of the first mobile 15 * of a device for controlling the range and direction of movement imparted to a claw 8 for driving the material to be sewn.
  • the housing 6 in particular contains a rotary hook 16 mounted at the upper end of a pinion 17 rotating on a shaft 17a, sketched in broken lines and secured, in 18, to the bottom of the housing 6.
  • the pinion 17 meshes with a second pinion 19 integral with the shaft 10 (FIG. 2) on which the drive of the hook 16 depends.
  • the shaft 10 rotates in two bearings, ie a first, smooth bearing, 20, engaged in a passage 21 formed in the wall of the housing 6 (fig. 2), and a second bearing , ball, 22, driven into the opening of the right end of a sleeve 23 whose left end is secured to a flange 24 (fig. 1).
  • This sleeve 23 is fixed to the motor 11 by means of this flange and of the screws already mentioned of which only the longitudinal axes 12 are shown.
  • the arms of the frame 2 are tubular and of hexagonal section.
  • the external profile of the sleeve 23 is chosen so that it can be easily introduced into the lower arm of the frame 2, by simple sliding. It can be locked in the fully engaged position in the frame by a screw 25 passing through an opening in the wall of this frame and engaging in a threaded hole provided in the body of the sleeve 23.
  • this opening could be in the form of a slot extending parallel to the longitudinal axis of the lower arm of the frame 2, thus making it possible to fix the sleeve 23 in a position more or less engaged in the framework: in doing so, it will be possible to move the hook 16 laterally with respect to the needle, not shown, that the needle bar 4 carries, in particular for making adjustments if necessary.
  • the invention described makes it possible to rationalize, to a very great extent, the manufacture and assembly of the structural members allocated in the traditional way to the lower arm of a sewing machine: in particular, provision may be made for the manufacture and assembly of the assembly comprising the housing 6 and the organs it contains, the motor 11 and the sleeve 23, independently of the rest of the sewing machine, the whole constituting an autonomous unit which can be easily mounted on the resistant framework of this machine as previously mentioned.
  • such a unit can, if necessary, be dismantled just as easily, in particular to proceed to its replacement, in the event of a breakdown, by a similar unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP91810917A 1990-11-29 1991-11-26 Bâti de machine à coudre Expired - Lifetime EP0488955B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3781/90 1990-11-29
CH3781/90A CH684418A5 (fr) 1990-11-29 1990-11-29 Machine à coudre.

Publications (2)

Publication Number Publication Date
EP0488955A1 EP0488955A1 (fr) 1992-06-03
EP0488955B1 true EP0488955B1 (fr) 1995-02-08

Family

ID=4263348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810917A Expired - Lifetime EP0488955B1 (fr) 1990-11-29 1991-11-26 Bâti de machine à coudre

Country Status (9)

Country Link
US (1) US5205230A (ru)
EP (1) EP0488955B1 (ru)
JP (1) JPH04272789A (ru)
CN (1) CN1027550C (ru)
BR (1) BR9105189A (ru)
CH (1) CH684418A5 (ru)
DE (1) DE69107289T2 (ru)
ES (1) ES2069263T3 (ru)
RU (1) RU2023777C1 (ru)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1090690C (zh) * 1996-12-10 2002-09-11 大和缝纫机制造株式会社 筒式底板型缝纫机
JP3480805B2 (ja) * 1998-02-09 2003-12-22 ブラザー工業株式会社 ミシンの回転釜駆動装置
DE19907007A1 (de) * 1999-02-18 2000-08-24 Zsk Stickmasch Gmbh Einstellbarer Greifer
JP2002273081A (ja) * 2001-03-19 2002-09-24 Brother Ind Ltd 送り調節器組立体、布送り機構付き釜モジュール、布送り機構付き釜モジュールを備えたミシン
AU2003233811A1 (en) * 2003-05-28 2005-01-21 Del Vecchia And Quintanar, S.L. System for synchronising two movements and sewing machine comprising same
CN115787212B (zh) * 2023-02-01 2023-05-02 海安迪斯凯瑞探测仪器有限公司 一种基于机器人的联动缝纫头

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE817837C (de) * 1950-05-03 1951-10-22 Betr Smittelbau G M B H Naehmaschine mit Stofftragarm und Stoffvorschubeinrichtung
US2709978A (en) * 1950-10-02 1955-06-07 Adler Solomon Sewing machine
DE1082485B (de) * 1955-12-21 1960-05-25 Naehmaschinenfabrik Karlsruhe Freiarmnaehmaschine mit abnehmbarem Armendstueck
GB855405A (en) * 1958-02-03 1960-11-30 Ivan Alexander Leslie Improvements in the construction of sewing machines
US3866553A (en) * 1973-05-07 1975-02-18 Singer Co Sewing machine frame construction
US4193361A (en) * 1978-12-21 1980-03-18 The Singer Company Sewing machine construction utilizing subassemblies
US4183310A (en) * 1978-12-21 1980-01-15 The Singer Company Feed and loop taker module for a sewing machine
IT1151007B (it) * 1980-03-31 1986-12-17 Rockwell Rimoldi Spa Macchina per cucire modulare
IT8521971V0 (it) * 1985-05-27 1985-05-27 Rockwell Rimoldi Spa Macchina per cucire con basamento formato da due moduli connessi amovibilmente tra loro.
US4552081A (en) * 1985-06-03 1985-11-12 The Singer Company Skeletal frame sewing machine
DE3812725A1 (de) * 1986-10-21 1989-02-02 Baeckmann Reinhard Verfahren und einrichtung zur ueberwachung und optimierung von naehmaschinen, naehautomaten und naehprozessen
CH675600A5 (ru) * 1988-04-14 1990-10-15 Mefina Sa
CH676999A5 (ru) * 1988-11-30 1991-03-28 Mefina Sa
CH677804A5 (ru) * 1988-11-30 1991-06-28 Mefina Sa
CH677508A5 (ru) * 1988-11-30 1991-05-31 Mefina Sa
CH683353A5 (fr) * 1990-05-23 1994-02-28 Mefina Sa Machine à coudre.

Also Published As

Publication number Publication date
JPH04272789A (ja) 1992-09-29
DE69107289T2 (de) 1995-07-13
CH684418A5 (fr) 1994-09-15
US5205230A (en) 1993-04-27
CN1027550C (zh) 1995-02-01
ES2069263T3 (es) 1995-05-01
RU2023777C1 (ru) 1994-11-30
CN1062011A (zh) 1992-06-17
DE69107289D1 (de) 1995-03-23
EP0488955A1 (fr) 1992-06-03
BR9105189A (pt) 1992-07-21

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