EP0512473B1 - Surjeteuse pour coudre des semelles intérieures au tiges de chaussures - Google Patents

Surjeteuse pour coudre des semelles intérieures au tiges de chaussures Download PDF

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Publication number
EP0512473B1
EP0512473B1 EP92107558A EP92107558A EP0512473B1 EP 0512473 B1 EP0512473 B1 EP 0512473B1 EP 92107558 A EP92107558 A EP 92107558A EP 92107558 A EP92107558 A EP 92107558A EP 0512473 B1 EP0512473 B1 EP 0512473B1
Authority
EP
European Patent Office
Prior art keywords
tongue
sewing machine
over
insole
machine according
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
EP92107558A
Other languages
German (de)
English (en)
Other versions
EP0512473A1 (fr
Inventor
Peter Forstpointner
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.)
J Strobel & Sohne & Co GmbH
Original Assignee
J Strobel & Sohne & Co GmbH
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 J Strobel & Sohne & Co GmbH filed Critical J Strobel & Sohne & Co GmbH
Publication of EP0512473A1 publication Critical patent/EP0512473A1/fr
Application granted granted Critical
Publication of EP0512473B1 publication Critical patent/EP0512473B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/10—Work-feeding means with rotary circular feed members
    • D05B27/18—Feed cups
    • D05B27/185—Guides or supports for the work presented to the feed cups, e.g. uncurling guides

Definitions

  • the invention relates to an overlock sewing machine for sewing insoles to shoe uppers of the type specified in the preamble of claim 1.
  • Such overlock sewing machines for sewing insoles to shoe uppers which occurs, for example, in the manufacture of reversible shoes and shoes whose outsole is sprayed or vulcanized onto the insole sewn onto the shaft, are known (DE-C-1 922 505).
  • the feed plate, which is driven step by step when sewing on the shaft, and the pressure plate, which is attached to the insole when sewing, are each arranged inside or behind in the immediate vicinity of the machine housing or on the outside or front on the side of the feed plate facing away from the machine housing, and this is the one Pressure plate on the feed plate to be spring-loaded, via a correspondingly movable support arm, on which the pressure plate is rotatably mounted.
  • the tongue for separating the shoe upper and the insole from one another can be pivoted in the direction of advance into the gap between the advance plate and the pressure plate, is designed in the form of a knife in this direction and is provided on a lever which is pivotably mounted on the machine housing and which can be actuated by hand or by means of a pedal or servomotor and interacts with a stop pin on the machine housing.
  • the tongue is then pivoted into its working position, in which the lever rests on the stop pin, when an insole is to be gathered at a shoe upper to eliminate excess width, namely when sewing along the insole tip and the tip of the shaft.
  • Overlock sewing machines for sewing stockings are also known, which are provided with two step-by-step feed plates and a material guide.
  • the material manager is used to connect the two together sewing material edges to be sewn flat and with a predetermined protrusion over the feed plates into the gap between the feed plates, so that the sewing needle moving back and forth pierces the latter at a corresponding distance from the two edges of the material edges.
  • the material guide is arranged in front of the gap between the feed plates, has a middle tongue with side stops for the edges of the material edges and two spring-loaded swivel levers for pressing the material edges against one or the other side of the tongue and can move from the working position to a rest position be pivoted away from the feed plates.
  • the material guide can be adjusted in height to change the protrusion of the material edges over the feed plate, whereby this is effected by the operating personnel by means of a toggle lever or pedal and is carried out within an adjustable range or takes place automatically depending on the material edge thickness in the material guide, and in each case from an adjustable lowest position of the material guide (US-A-2 292 762 and US-A-2 370 547).
  • the invention has for its object to provide an overlock sewing machine for sewing insoles to shoe uppers of the type specified in the preamble of claim 1, which is trouble-free Shirping with even folds, especially when sewing along the insole tip and the tip of the shaft, is allowed, to the extent desired and with a wide variety of shaft and insole materials.
  • the invention is based on the knowledge that the gathering of the upper can be significantly improved if the working position of the tongue, which should then separate the upper and insole from one another, does not always remain the same, but rather taking into account the properties of the upper and insole material and the mutual behavior of the shaft and insole when passing through the feed plate and the pressure plate is selected and adapted to these parameters. It has been found that excellent results can be obtained in shirring shoelaces during the insole sewing.
  • the single-thread overlock sewing machine shown is used to sew the insole 1 onto the shoe upper 2 in the manufacture of shoes, the plastic outsole of which is then sprayed onto the insole 1.
  • Special measures have been taken to gather the shaft 2 when the insole tip 1 'is sewn onto the shaft tip 2', the tip 2 'of which is wider than the tip 1' of the insole 1. This excess width depends on the desired shoe shape in the area of the toe and is compensated for by the shirring.
  • the overlock sewing machine has a housing 3, a sewing needle 4, a gripper 5, a feed plate 6 and a pressure plate 7.
  • the sewing needle 4 extends approximately horizontally and is attached to the front end of a needle bar 8 protruding from the housing 3 on the front of the sewing machine.
  • the gripper 5 projects through an opening 9 in the housing 3, which is provided above the needle bar 8.
  • the feed plate 6 and the pressure plate 7 are arranged in the same horizontal plane directly below the sewing needle 4.
  • the feed plate 6 is provided on the outer circumference with a toothing 10 and is arranged inside or behind in the immediate vicinity of the housing 3 on a housing projection 3 '.
  • the feed plate 6 can be rotated step by step by means of a drive, not shown. In contrast, the pressure plate 7 is not assigned its own drive.
  • the two vertical axes of rotation V and A of the feed plate 6 and the pressure plate 7 extend in the same plane in which the sewing needle 4 also extends.
  • the pressure plate support arm 12 extends parallel to this vertical plane away from the housing 3, specifically horizontally, in order to pass over a section 12 ′ bent down at right angles into a section 12 ′′ bent at right angles to the vertical plane.
  • a carrier is attached, on which the pressure plate 7th is rotatably mounted about the axis A and which has an eccentric pin 13. This protrudes upwards and is received in a bore 14 at the free end of the support arm section 12 ′′, clamped therein with the aid of a screw 15 which passes through a side slot 14 ′ of the bore 14.
  • a carrier 16 for a lever 17 with a tongue 18, a servomotor 19 for actuating the lever 17 and a stop 20 for the lever 17 are provided on the front of the sewing machine.
  • the carrier 16 is fastened to the housing 3 by means of a lower arm 16 ′ projecting at right angles and has an upper vertical arm 16 ′′ and an upper horizontal arm 16 ′′ ′′.
  • a mounting bracket 19 'of the servomotor 19 is articulated to the vertical arm 16' 'by means of a horizontal bolt 21 with a head 21'.
  • Two forearms 22, 23 protrude horizontally from the horizontal arm 16 '' 'on the side facing away from the housing 3, at the free ends of which the lever 17 is pivotably mounted about a horizontal axis H or the stop 20 is provided.
  • the lever 17 has three arms 17 ', 17' ', 17' '', which are oriented radially to its pivot axis H.
  • the servomotor 19, which is designed as a double-acting compressed air cylinder with a piston rod 24, the free end of which is articulated to the arm 17 ', engages on the arm 17' which projects upwards, and can be pivoted about a horizontal axis.
  • the downward arm 17 '' of the lever 17 cooperates with the stop 20.
  • the stop 20 is formed by a screw 25, which can be screwed into a threaded bore 26 of the forearm 23 of the carrier 16 and locked in the respective rotational position by means of a manually operable rotary head 25 'at the end facing away from the arm 17' '.
  • the screw 25 is provided next to the rotary head 25 'with a ring 25' 'of projections evenly distributed in the circumferential direction, with which a leaf spring 27 fastened at the top of the forearm 23 of the carrier 16 interacts.
  • the laterally protruding arm 17 '''of the lever 17 merges into the tongue 18 via a section which is bent essentially at right angles and is approximately parallel to the lower arm 17''and which leads to the feed plate 6 and the pressure plate 7 is directed towards and complements the arm 17 '''of the lever 17 to a substantially C-shaped structure, as shown in FIG. 1. 3 and 4, the tongue 18 is tapered, ie conical and tapering away from the arm 17 '''of the lever 17 towards the free tongue end 18'. Towards this end 18 ', the two side surfaces 18''of the tongue 18 converge accordingly.
  • the feed plate 6 engages with the toothing 10 on the shoe upper 2 and takes it along.
  • the shaft 2 in turn takes the insole 1, which in turn takes the pressure plate 7 in the direction of the arrow 31 in FIGS. 3 and 4, which engages with the toothing 11 on the insole 1 and through which in the direction of the arrow 32 according to FIG. 2 to 4 acting on the support arm 12 spring load on the feed plate 6 is pressed.
  • the inner sole 1 is carried along by the shoe upper 2 partly via the overlock seam already formed and partly frictionally, this frictional connection depending on the coefficient of friction between the upper 2 and the inner sole 1 and the pressure with which they are between the feed plate 6 and the pressure plate 7 lie.
  • the tongue 18 is moved into the gap 30 between the feed plate 6 and the pressure plate 7 in order to separate the upper 2 and the insole 1, so that mutual hatching is possible.
  • the tongue 18 is namely extremely smooth on its side surfaces 18 ′′, so that the shoe upper 2 and the insole 1 can slide along it very well, usually with much less friction than must be overcome with mutual movement of the upper 2 and insole 1 if they lie directly against each other.
  • the servomotor 19 is pressurized with compressed air via a line 33 in order to retract the piston rod 24 and the lever 17 about the axis H in FIG. 1 counterclockwise until the lower arm rests 17 '' of the lever 17 at the stop 20 or at the left end of the screw 25 in FIG. 1.
  • the tongue 18 swivels into its working position in the advancing direction of the shoe upper 2 and the insole 1 illustrated by the arrow 34 in FIGS. 3, 4. From this, it is pivoted back into the rest position after the insole tip 1 'is sewn onto the shoe upper 2' by the actuating motor 19 being pressurized with compressed air via its other line 35.
  • the tongue 18 can be moved into different working positions or pivoted in the feed direction 34 of the shoe upper 2 and insole 1, which depend on the properties of the shoe upper 2 and the insole 1 and are selected accordingly and with the aid of the stop 20 or the Screw 25 can be adjusted.
  • 3 shows the working position in which the tongue 18 protrudes at least far onto the gap 30 between the feed plate 6 and the pressure plate 7, in FIG. 4 the working position in which the tongue 18 extends furthest over the gap 30 protrudes.
  • the tongue 18 is infinitely adjustable by means of the stop 20 or the screw 25, which, due to the tension of the sewing thread 36 illustrated in FIGS.
  • the servomotor 19 does not necessarily have to be designed as a double-acting compressed air cylinder. It is also possible to operate the lever 17 or tongue 18 without any servo motor 19 using a pedal or a toggle lever. Incidentally, it is also favorable when using a servomotor 19 to control it by means of a pedal or toggle lever, since then the insole 1 and the shoe upper 2 are then held in the required manner with both hands by the seamstress and to the feed plate 6 and Pressure plate 7 can be guided when the tongue 18 is pivoted into its working position for gathering the shaft.
  • the support arm 12 of the latter can be moved against the effect of its spring loading and thus against the direction of the arrow 32 in FIGS. 2 to 4.
  • This release of the pressure plate 7 from the feed plate 6 can be done in the same way as described for the actuation of the lever 17, which should also be movable on the forearm 22 of the carrier 16 in the direction of the double arrow 37 according to FIG. 2 by different To take insole and / or upper thickness into account.
  • the pressure plate 7 is also lifted from the feed plate 6, in that position of the sewing needle 4, which is shown in FIG. 2.
  • the spring loading of the support arm 12 in the direction of the arrow 32 is made effective again in order to press the pressure plate 7 back towards the feed plate 6.
  • This ventilation does not take place to the extent that the ventilation for inserting the sewing material 1, 2 between the feed plate 6 and the pressure plate 7 and for removing the sewing material 1, 2 from the overlock sewing machine.
  • the tension of the sewing thread 36 is increased during the sewing of the insole tip 1 'to the shoe upper 2', that is, as long as the tongue 18 is in its working position according to FIG. 3 or 4 or in between.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (9)

  1. Surjeteuse pour coudre des semelles intérieures aux tiges de chaussures, comportant :
    a) une plaque d'avancement (6) entraînée pas à pas, destinée à reposer sur la tige (2), et une plaque d'appui (7) sans entraînement qui repose sur la semelle intérieure (1), lesquelles sont chargées par ressort l'une vers l'autre, et
    b) une languette (18), qui peut être déplacée dans la fente (30) entre la plaque d'avancement (6) et la plaque d'appui (7) pour tendre la tige (2), afin de séparer la tige (2) de la semelle intérieure (1) de façon à permettre un glissement réciproque,
    caractérisée en ce que la languette (18) peut être déplacée dans diverses positions de travail, dans lesquelles elle se projete plus ou moins loin vers la fente (30) ou au-delà de la fente (30) dans le sens d'avancement (34) de la tige de chaussure (2) et de la semelle intérieure (1), selon les propriétés de celles-ci.
  2. Surjeteuse selon la revendication 1, caractérisée en ce que la languette (18) peut pivoter dans la position de travail dans la direction d'avancement (34) de la tige de chaussure (2) et de la semelle intérieure (1).
  3. Surjeteuse selon la revendication 2, caractérisée en ce qu'elle comporte une butée (20) destinée à limiter le mouvement de pivotement de la languette (18) et réglable de façon à modifier la position de travail de la languette (18).
  4. Surjeteuse selon la revendication 3, caractérisée en ce que la butée (20) est formée par une vis (25), qui peut être vissée dans un trou fileté (26) au moyen d'une tête de rotation (25') pouvant être actionnée manuellement, et encliquetée dans chaque position de rotation.
  5. Surjeteuse selon la revendication 4, caractérisée en ce que la vis (25) peut être encliquetée au moyen d'un ressort à lame (27), qui coopère avec une couronne d'encliquetage (25'') de la vis (25).
  6. Surjeteuse selon la revendication 4 ou 5, caractérisée en ce que la vis (25) est reliée par l'intermédiaire d'un potentiomètre à un appareil d'affichage numérique de la position axiale de la vis (25).
  7. Surjeteuse selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que la languette (18) est de forme conique et se rétrécit en direction de son extrémité libre (18').
  8. Surjeteuse selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que la languette (18) peut être déplacée ou pivotée dans la position de travail au moyen d'une pédale ou d'un levier à genou ou au moyen d'un moteur de réglage (19).
  9. Surjeteuse selon l'une ou l'ensemble des revendications précédentes, caractérisée en ce que la plaque d'appui (7) est disposée à l'extérieur devant la plaque d'avancement (6) et supportée avec possibilité de rotation sur un bras de support (12) mobile et chargé par ressort en direction de la plaque d'avancement (6).
EP92107558A 1991-05-07 1992-05-05 Surjeteuse pour coudre des semelles intérieures au tiges de chaussures Expired - Lifetime EP0512473B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114920 1991-05-07
DE4114920A DE4114920C1 (fr) 1991-05-07 1991-05-07

Publications (2)

Publication Number Publication Date
EP0512473A1 EP0512473A1 (fr) 1992-11-11
EP0512473B1 true EP0512473B1 (fr) 1995-09-20

Family

ID=6431186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107558A Expired - Lifetime EP0512473B1 (fr) 1991-05-07 1992-05-05 Surjeteuse pour coudre des semelles intérieures au tiges de chaussures

Country Status (7)

Country Link
US (1) US5257589A (fr)
EP (1) EP0512473B1 (fr)
JP (1) JPH05123463A (fr)
KR (1) KR920021086A (fr)
DE (2) DE4114920C1 (fr)
ES (1) ES2080983T3 (fr)
TW (1) TW199857B (fr)

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US4810288A (en) * 1987-09-01 1989-03-07 United Technologies Corporation Method and apparatus for making metal powder
US4808218A (en) * 1987-09-04 1989-02-28 United Technologies Corporation Method and apparatus for making metal powder
IT232102Y1 (it) * 1994-12-06 1999-08-16 Ciucani Mario Macchina automatica semplificata per la cucitura di articoli vari, in particolare articoli di pelle
FR2747019B1 (fr) * 1996-04-04 1998-07-03 Cap Coeur Sarl Procede de fabrication d'un article chaussant reversible, notamment un chausson et article chaussant obtenu
ITBO20040665A1 (it) * 2004-10-27 2005-01-27 Mario Ciucani Macchina per la cucitura di articoli vari, in particolare una tomaia aperta ad un elemento sagomato associato ad un fondo di una calzatura
TWI489954B (zh) 2013-06-07 2015-07-01 Chee Siang Ind Co Ltd Pull the machine
CN103741382B (zh) * 2013-12-17 2016-01-20 苏州鑫帛泰纺织科研有限公司 褶皱缝纫装置
KR101495009B1 (ko) * 2014-11-10 2015-02-24 조세제 제화용 재봉기의 사절장치
CN105747378A (zh) * 2014-12-19 2016-07-13 天津市德天达科技有限公司 一种绷鞋帮的方法
US20180317605A1 (en) * 2017-05-04 2018-11-08 Bha Altair, Llc Footwear item and methods using strobel stitching
CN108914398B (zh) * 2018-09-29 2024-01-30 广东金悦来自动化设备有限公司 一种鞋舌织带自动缝纫设备
KR102602672B1 (ko) * 2022-06-20 2023-11-14 조세제 제화용 재봉기의 이송컵 이송장치
KR102536772B1 (ko) * 2022-12-12 2023-05-26 조세제 제화용 재봉기

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US2370547A (en) * 1943-12-10 1945-02-27 Singer Mfg Co Automatically adjustable edge guide for sewing machines
US2730056A (en) * 1951-08-13 1956-01-10 Wiesenfeld Leo Attachment for fur sewing machines
US3046920A (en) * 1959-08-25 1962-07-31 Singer Mfg Co Sewing machine having double stitch fingers
DE1922505B2 (de) * 1969-05-02 1976-05-13 J. Strobel & Söhne GmbH & Co, 8000 München Ueberwendlichnaehmaschine
IT1081052B (it) * 1976-05-07 1985-05-16 Rockwell Rimoldi Spa Dispositivo di guida del lavoro in macchine per cucire parti dei pellicceria
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US4901656A (en) * 1987-11-13 1990-02-20 Brother Kogyo Kabushiki Kaisha Information display apparatus for a sewing machine

Also Published As

Publication number Publication date
TW199857B (fr) 1993-02-11
US5257589A (en) 1993-11-02
EP0512473A1 (fr) 1992-11-11
KR920021086A (ko) 1992-12-18
DE4114920C1 (fr) 1992-11-05
DE59203718D1 (de) 1995-10-26
JPH05123463A (ja) 1993-05-21
ES2080983T3 (es) 1996-02-16

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