EP0166146A1 - Déplaceur d'ouvrage sur une machine à coudre - Google Patents

Déplaceur d'ouvrage sur une machine à coudre Download PDF

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Publication number
EP0166146A1
EP0166146A1 EP85105759A EP85105759A EP0166146A1 EP 0166146 A1 EP0166146 A1 EP 0166146A1 EP 85105759 A EP85105759 A EP 85105759A EP 85105759 A EP85105759 A EP 85105759A EP 0166146 A1 EP0166146 A1 EP 0166146A1
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EP
European Patent Office
Prior art keywords
sewing
transport device
transport
sewing machine
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.)
Withdrawn
Application number
EP85105759A
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.)
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 EP0166146A1 publication Critical patent/EP0166146A1/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Withdrawn legal-status Critical Current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
    • D05B35/10—Edge guides
    • D05B35/107—Fixed or adjustable pin holding the work, e.g. for circular or spiral stitching
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B35/00—Work-feeding or -handling elements not otherwise provided for
    • D05B35/10—Edge guides
    • D05B35/102—Edge guide control systems with edge sensors

Definitions

  • the invention relates to a sewing machine with a transport device for the sewing material, which has a transporter engaging on one side of the sewing material and a presser foot that can be placed on the other side of the sewing material in the effective area of the transporter.
  • the invention is therefore based on the object of providing a sewing machine which also makes it possible to carry out outer arches at the full sewing speed, that is to say to fully utilize the performance of the sewing machine. This object is achieved by a sewing machine with the features of claim 1.
  • the second transport device takes over the advancement of the material and maintains this function until the end of the outer arch ensures that such an outer arch can be sewn at full sewing speed.
  • the control device causes the first transport device to be ineffective during the transport of the sewing material by means of the second transport device, and for both transport devices to be switched from the inactive to the active state and vice versa at the right time.
  • the switching times for the transport devices can be set in different ways. For example, with a corresponding design of the control device, the number of stitches can be determined, according to which the one transport device transfers the sewing material transport to the other transport device.
  • the control device has a sensor which scans the edge of the material to be executed parallel to the groove to be executed at a point in front of the work station of the sewing needle and generates control signals upon detection of the beginning and end of an outer arc, on the basis of which the control device detects the controls two transport devices.
  • control device expediently has a delay device which detects the change Control of the transport devices from the time of detection of the beginning or end of the outer arc delayed to the extent necessary, for example for an adjustable distance or an adjustable number of stitches.
  • the sensor is formed by a light barrier, since it is not susceptible to faults and is particularly suitable for any type of sewing material.
  • the second transport device preferably has its own drive motor in order to make the drive as simple as possible and, above all, to be able to mount the second drive device on a sewing machine in a simple manner without having to change its construction, which also makes retrofitting easy. If, as is usually the case, you do not only have to make an outer curve, but rather the outer curve represents only a section of the seam, it is generally desirable to have the same stitch length as in the section of the seam given by the outer curve in the other sections, in which the nutrient material is transported through the first transport device.
  • the rotary movement of the drive motor of the second transport device is therefore controlled by the control device as a function of the working speed of the sewing machine. This can be achieved in a simple manner by using a stepping motor which is driven with a pulse frequency proportional to the speed of the main drive of the sewing machine.
  • the transport element of the second transport device is preferably arranged at the end of a longitudinally displaceable drive shaft lying parallel to the longitudinal axis of the needle.
  • the transport element can be pressed against the material in the manner of a stamp. will. It would be possible to clamp the material to be sewn between the transport element and a rotatable disc arranged coaxially with it. In most cases, however, it will suffice to let the material rest on a flat plate on which it can be moved without significant friction, and the transport element to the side of the sewing facing away from this plate good to express. A rubber covering or the like on the side of the tranaport element which comes into contact with the material to be sewn is then sufficient to take the material to be carried without slippage relative to the transport element.
  • the use of a plate instead of a rotatable disk as a counter-bearing for the transport element has the advantage that only the second transport device needs to be adjusted to adjust the second transport device to different radii of the outer arc.
  • the drive shaft carrying the transport element is constantly driven during the operation of the sewing machine, so that there are no synchronization problems when switching from one to the other transport device.
  • the drive shaft is coupled to a displacement device controlled by the control device and preferably formed by a pneumatic working cylinder.
  • the transport element consists of a support and drive plate rigidly connected to the drive shaft and a thrust washer which is resiliently supported in the axial direction but is non-rotatably connected to it.
  • the presser foot is therefore coupled to a displacement device controlled by the control device, which is preferably a pneumatic working cylinder.
  • the second transport device can be easily adjusted to radii of different sizes of the seam to be made, in a preferred embodiment it has a holder that allows it to be adjusted transversely to the transport direction of the first transport device.
  • This holder is preferably equipped with a scale indicating the position of the second transport device with respect to the sewing size of the radius of the path formed by the seam during the transport of the sewing material by means of the second transport device.
  • an adjustment drive can be provided which is driven either manually or by motor.
  • the adjustment drive can have a drive spindle with which a hand crank or electric motor is coupled.
  • the sewing machine according to the invention is preferably equipped with an edge guide, the curvature of which is opposite to the curvature which the seam which can be carried out with the aid of the second transport device has.
  • An industrial sewing machine with a head 1 designed in a manner known per se has a first transport device which consists of a feed dog 2 and a presser foot 3.
  • the feed dog 2 is designed and arranged in the usual way, i.e. it lies in the stitch area of the sewing needle 4 on the underside of the sewing material and moves it in a straight line, while the presser foot 3 presses the sewing material against the feed dog 2 from above.
  • the presser foot 3 is fastened to the lower end of a vertically displaceable actuating rod, the upper end of which is coupled to a pneumatic working cylinder 6, which is placed on the head 1 in the exemplary embodiment.
  • the first transport device is only effective when the presser foot 3 is lowered.
  • the sewing machine has a second transport device, designated as a whole by 7.
  • This second transport device 7 has a drive shaft 8 which is arranged parallel to the longitudinal direction of the sewing needle 4 and is displaceable in its longitudinal direction and which is arranged laterally next to the head 1 at a distance from the sewing needle.
  • a support and drive plate 9 is fastened, which lies in a plane parallel to the support surface for the sewing material above this support surface.
  • the support surface for the sewing material is formed below the support and drive plate 9 by a plate 10 on which the sewing material can be moved practically without friction.
  • the se plate 10 is embedded in the support table 11 of the sewing machine so that its top is flush with the rest of the support surface for the material.
  • a pressure plate 12 is resiliently supported in the axial direction, with springs being interposed, which is radially immovably and non-rotatably connected to the support and drive plate 9.
  • On the underside of the plate 10 facing the pressure plate 12 is provided with a rubber coating 13 in order to be able to take the sewing material without slipping when the stamp formed by the support and driving plate 9 and the pressure plate 12 is lowered so far that it presses lies on the top of the sewing material.
  • the drive shaft 8 is connected in a rotationally fixed but displaceable manner in the axial direction to a gear wheel 15 which is rotatably mounted in a housing 14 and which in the exemplary embodiment is connected to a drive pinion 17 via an idler gear 16 which sits on the shaft of a stepping motor 18 in a rotationally fixed manner.
  • the stepper motor 18 is flanged to the underside of the housing 14, which is formed by a base plate 19 projecting rearward over the upper part of the housing 14.
  • the upper end of the drive shaft 8 is rotatable, but cannot be displaced in the axial direction by means of a coupling element 20 with a pneumatic working cylinder 21 which is arranged coaxially with the drive shaft 8 and is flanged to the top of the housing 14 .
  • a hub 22 is fixed, which is penetrated by a tube lying horizontally and extending transversely to the transport direction of the first transport device, only that between the tube 23 and the bore of the hub 22 there is play required for a displaceability.
  • the tube 23 is fixedly connected at its end shown in FIG. 1 on the right to a vertical support 24 which is connected to the transport of the Sewing material is not a hindrance behind the head 1 is arranged.
  • the base plate 19 is held in its horizontal position by a rail 25, which is arranged parallel to the tube 23, but offset relative to this in the horizontal direction, so that the top of the base plate 19 abuts the bottom of the rail 25.
  • the rail 25, like the pipe 23, is fixed to the vertical support 24 at its end shown on the right in FIG. 1.
  • the base plate 19 is thereby held in its horizontal position and secured against displacement in the longitudinal direction of the tube 23 and the rail 25.
  • the rail 25 is provided with a scale 28 running in its longitudinal direction, which cooperates with a pointer 29 fixed on the base plate 19.
  • the scale 28 is numbered in such a way that, together with the pointer 29, it indicates the set radius which the seam has when the material to be sewn is transported by the second transport device 7.
  • a rotatable threaded spindle 30 is provided which is arranged parallel to the latter and is in engagement with a spindle nut 31 fixed on the base plate 19 and therefore shifts the base plate 19 when it is rotated.
  • the rotation of the threaded spindle 30 takes place in the exemplary embodiment by means of a hand-operated crank, not shown. But it could also be done by means of an electric motor.
  • a control device 32 which contains a control device with the exception of a light barrier 33, is fastened to a lateral arm of the vertical support 24.
  • This light barrier 33 has the task of scanning the edge of the sewing material fed to the sewing needle 4 To recognize the beginning and the end of an outer arc and to be able to generate a control signal.
  • the light barrier 33 is therefore arranged above an imaginary line, along which a straight edge of a sewing material would run, at a distance in front of the stitch area of the sewing needle 4 and for this purpose is fastened to a holder 34, which in the exemplary embodiment is on the other hand fastened to the head 1, as is the case Show.
  • the control device generates a control signal based on the signal of the light barrier 33 indicating the start of an outer arc with the aid of a delay device, with a time delay dependent on the distance of the light barrier 33 from the sewing needle 4, which has the result that the pneumatic working cylinder 6 lifts the presser foot 3 and the pneumatic working cylinder 21 lowers the drive shaft 8 and presses the rubber covering 13 of the pressure plate 12 against the material.
  • the control device generates a control command based on a signal from the light barrier 33, which means the end of an outer arc, which causes the pressure plate 12 to be lifted from the sewing material by means of the pneumatic working cylinder 6 and the presser foot 3 to be lowered with the required time delay.
  • control device generates 1 control pulses for the stepper motor 8 due to the speed of the drive shaft of the head scanned with the aid of a digital speed sensor, the frequency of which is set such that the sewing material is transported by the second transport device 7 at a speed in the working area of the sewing needle 4 which is equal to the transport speed which the transporter 2 executes. Since the stepper motor 18 constantly drives the drive shaft 8 when the drive shaft of the head 1 is running, no synchronization problems occur when the transport is transferred from one transport device to the other transport device.
  • an edge guide 35 is provided for the sewing material in the exemplary embodiment, on which not only a straight edge of the sewing material is guided, but also an inner curve, which is why the edge guide formed by a plate 35 has a leading edge curved in accordance with an inner arc. Thanks to this edge guide 35 and the second transport means 7 straight seams, the inner sheets and outer sheets can be sewn without the operator needs to guide the workpiece during the 'sewing with this machine. All seams or seam sections can therefore be carried out at full sewing speed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP85105759A 1984-06-23 1985-05-10 Déplaceur d'ouvrage sur une machine à coudre Withdrawn EP0166146A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3423239 1984-06-23
DE19843423239 DE3423239A1 (de) 1984-06-23 1984-06-23 Naehmaschine

Publications (1)

Publication Number Publication Date
EP0166146A1 true EP0166146A1 (fr) 1986-01-02

Family

ID=6239001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105759A Withdrawn EP0166146A1 (fr) 1984-06-23 1985-05-10 Déplaceur d'ouvrage sur une machine à coudre

Country Status (4)

Country Link
US (1) US4593636A (fr)
EP (1) EP0166146A1 (fr)
JP (1) JPS6131194A (fr)
DE (1) DE3423239A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016131447A1 (fr) * 2015-02-19 2016-08-25 Xi'an Typical Europe Gmbh Machine a coudre

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3621238A1 (de) * 1986-06-25 1988-02-04 Union Special Gmbh Naehgutausrichtvorrichtung fuer naehmaschinen
DE3834427A1 (de) * 1988-10-10 1990-04-12 Msi Naehautomaten Entwicklung Vorrichtung zum konturgetreuen naehen, heften oder schneiden textiler werkstuecke
DE3914913A1 (de) * 1989-05-05 1990-11-08 Schmohl Naehautomaten Gmbh Werkstueck-positioniereinrichtung, insbesondere fuer naehmaschinen
US5206015A (en) * 1989-06-05 1993-04-27 The United States Of America As Represented By The Secretary Of Agriculture Introduction of bacteria in ovo
US5647293A (en) * 1995-09-08 1997-07-15 Atlanta Attachment Co. Locker patch attachment system
JP2007014556A (ja) * 2005-07-07 2007-01-25 Ykk Corp 生地片の縁縫装置
US7444951B2 (en) * 2006-11-21 2008-11-04 Ykk Corporation Curved edge sewing systems
CN102560920B (zh) * 2010-12-08 2015-07-29 日星株式会社 缝纫机及其驱动控制方法
US8850999B1 (en) * 2011-02-10 2014-10-07 Daniel K. Kalkbrenner Sewing machine feed device
GB2504510A (en) * 2012-07-31 2014-02-05 Le Summit Ind Co Ltd Sewing machine accessory for circular stitching
CN102978832A (zh) * 2012-12-27 2013-03-20 苏州弘贸纺织有限公司 一种自动缝合机
CN106087285B (zh) * 2016-08-24 2018-08-28 兰如林 一种靠边器
CN107044005B (zh) * 2017-04-18 2022-10-28 福恩达机器人（昆山）有限公司 一种带自动对边机构的缝纫机
CN107841832B (zh) * 2017-10-30 2020-11-10 杰克缝纫机股份有限公司 一种曲线缝制设备及缝纫机
CN107761259B (zh) * 2017-11-23 2019-11-12 杰克缝纫机股份有限公司 一种缝纫机曲线缝制压布装置
CN107974770B (zh) * 2017-12-05 2020-11-03 杰克缝纫机股份有限公司 一种基于平缝机的曲线缝制装置
CN109763274B (zh) * 2019-03-13 2024-04-19 苏州匠博智能科技有限公司 一种缝纫包边的旋转装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474747A (en) * 1967-08-24 1969-10-28 Ivanhoe Research Corp Apparatus for manipulating a workpiece along an irregular contoured path through a workstation
US3675602A (en) * 1970-06-30 1972-07-11 Clinton Ind Automatic emblem sewing apparatus
GB1460160A (en) * 1972-11-09 1976-12-31 Shoe & Allied Trades Res Ass Automatically guiding workpieces through a machine
EP0020259A1 (fr) * 1979-05-29 1980-12-10 ANVAR Agence Nationale de Valorisation de la Recherche Installation de traitement linéaire d'un bord courbe d'une pièce souple telle qu'une pièce textile
FR2467902A1 (fr) * 1979-10-18 1981-04-30 Valton Sa Dispositif pour la mise automatique en position d'une piece de vetement en vue de l'execution d'une couture
DE3139426A1 (de) * 1981-10-03 1983-04-28 Schips, Helmut, 9327 Tübach Vorrichtung zum automatischen absteppen der kanten von manschetten, kragen und aehnlichem naehgut
GB2115842A (en) * 1982-02-26 1983-09-14 Amf Inc Means for processing sheets of material

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072081A (en) * 1960-04-05 1963-01-08 Cluett Peabody & Co Inc Edge guide automatic sewing
US3263634A (en) * 1964-09-23 1966-08-02 Heimlich Brothers Inc Magnetic sewing machine guide
JPS455304Y1 (fr) * 1965-06-08 1970-03-13
GB1239980A (en) * 1967-08-08 1971-07-21 Ivanhoe Res Corp Feed guide for sheet material
DE2363837A1 (de) * 1973-12-21 1975-06-26 Union Special Maschinenfab Kantensteuerung fuer naehmaschinen zur herstellung randparalleler naehte
IT1010930B (it) * 1974-04-12 1977-01-20 Necchi Spa Miglioramenti in macchine per cu cire a barre ago disinnestabili
US4188893A (en) * 1978-08-28 1980-02-19 Fumio Shimazaki Device of detecting cloth feeding amount in sewing machines
JPS6115344Y2 (fr) * 1980-12-02 1986-05-13
JPS59150007U (ja) * 1983-03-26 1984-10-06 株式会社ナブコ 流体アクチユエ−タ
DE3314717C1 (de) * 1983-04-22 1984-02-09 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern Naehmaschine mit mindestens einem Stoffschieber und einer Fuehrungsvorrichtung zum selbsttaetigen Herstellen einer kurvenfoermigen,randparallelen Naht

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474747A (en) * 1967-08-24 1969-10-28 Ivanhoe Research Corp Apparatus for manipulating a workpiece along an irregular contoured path through a workstation
US3675602A (en) * 1970-06-30 1972-07-11 Clinton Ind Automatic emblem sewing apparatus
GB1460160A (en) * 1972-11-09 1976-12-31 Shoe & Allied Trades Res Ass Automatically guiding workpieces through a machine
EP0020259A1 (fr) * 1979-05-29 1980-12-10 ANVAR Agence Nationale de Valorisation de la Recherche Installation de traitement linéaire d'un bord courbe d'une pièce souple telle qu'une pièce textile
FR2467902A1 (fr) * 1979-10-18 1981-04-30 Valton Sa Dispositif pour la mise automatique en position d'une piece de vetement en vue de l'execution d'une couture
DE3139426A1 (de) * 1981-10-03 1983-04-28 Schips, Helmut, 9327 Tübach Vorrichtung zum automatischen absteppen der kanten von manschetten, kragen und aehnlichem naehgut
GB2115842A (en) * 1982-02-26 1983-09-14 Amf Inc Means for processing sheets of material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016131447A1 (fr) * 2015-02-19 2016-08-25 Xi'an Typical Europe Gmbh Machine a coudre
US10407812B2 (en) 2015-02-19 2019-09-10 Vetron Typical Europe Gmbh Sewing machine

Also Published As

Publication number Publication date
US4593636A (en) 1986-06-10
JPS6131194A (ja) 1986-02-13
DE3423239A1 (de) 1986-01-02

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