EP0929709B1 - Antriebsvorrichtung für den nähgutvorschub einer nähmaschine - Google Patents

Antriebsvorrichtung für den nähgutvorschub einer nähmaschine Download PDF

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Publication number
EP0929709B1
EP0929709B1 EP97942697A EP97942697A EP0929709B1 EP 0929709 B1 EP0929709 B1 EP 0929709B1 EP 97942697 A EP97942697 A EP 97942697A EP 97942697 A EP97942697 A EP 97942697A EP 0929709 B1 EP0929709 B1 EP 0929709B1
Authority
EP
European Patent Office
Prior art keywords
belt
drive
conveyor
pulley
control
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
EP97942697A
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German (de)
English (en)
French (fr)
Other versions
EP0929709A1 (de
Inventor
Johannes Sahl
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Individual
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Individual
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Publication date
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Publication of EP0929709A1 publication Critical patent/EP0929709A1/de
Application granted granted Critical
Publication of EP0929709B1 publication Critical patent/EP0929709B1/de
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
    • D05B27/00—Work-feeding means
    • D05B27/10—Work-feeding means with rotary circular feed members
    • D05B27/14—Work-feeding means with rotary circular feed members rotating discontinuously

Definitions

  • the invention relates to a drive device for the material feed a sewing machine, with one on at least one intermediate drive continuous rotary drive connectable feed dog.
  • feed devices for one gradual workpiece feed so that the sewing material during the plunge of the The needle stands still and the feed movement only takes place in the time range which the needle is outside of the sewing material.
  • These known feed devices usually consist of a hop transport, in which the material to be sewn from a periodically emerging, toothed plate Transporter is detected and advanced in the sewing direction.
  • the feed dog movement consists of a lifting and a sliding movement, the two eccentric drives working independently of each other as Intermediate shoots are executed.
  • These hop transports therefore require a high design effort with complicated mechanical drive and Transmission elements, which additionally requires a corresponding maintenance and brings with it a high susceptibility to failure.
  • There is also at higher feed speeds due to the lifting movement of the feed dog the danger of the sewing material lifting off due to acceleration Feed dog, whereby the required accuracy of the material feed is lost and limits the feed speed and thus the sewing speed must stay.
  • a driven via deflection rollers in the feed direction Belt comprises, which by means of a rotary drive continuously driven belt one in the feed direction behind the needle on the fabric layer pressed-on pressing device drives and over a roller of the pressing device and one in the train path of the belt on a spring-loaded lever attached idler pulley, which is exceeded when the spring-loaded lever specified tension value of the belt loosens the latter so far that its Propulsion can come to a standstill, which leads to intermittent operation is possible, but this feed device serves exclusively as Additional device for conventional material feed devices and is designed to be displacement-free Effect material transport.
  • the strap of the additional device To do this, it only drives the pressure roller intermittently and thus coordinated on the gradual material feed, but he can do the material feed not replace, but can only support it subsequently.
  • the invention is therefore based on the object of a drive device to create the kind described in the relatively simple and an intermittent material feed as a simple sliding movement with little effort allowed to perform without lifting component and this sliding movement also derived from a continuous rotary motion.
  • the invention solves this problem in that the intermediate drive from one Belt drive with one rotating around a drive wheel and a driven wheel There is a belt, the belt having an excess length in the region of the Working runs via a control role and in the area of the empty run via a Tension roller is guided and the control roller and the tension roller transversely to the belt rotation direction periodically in the sense of releasing or deflecting the Belt for decelerating, stopping and accelerating the driven gear rotation are back and forth adjustable, and that the drive wheel with an as Circulating conveyor, in particular conveyor belt trained conveyor in rotary connection stands.
  • the belt drive which is preferably a toothed belt drive is trained, but also as a V-belt, flat belt, rope or Chain drive or the like.
  • the drive wheel is set in rotation and can rotate about appropriate Drive connections to the conveyor systems to be driven pass on.
  • the control role is from a basic position in which due to the excess belt length between the drive and driven wheels experiences a deflection, so adjusted that there is a reduction in the deflection comes, the pulling drive movement of the belt through the constant rotation of the drive wheel in proportion to the release of the Belt caught and thereby slowed the output gear in its rotation and even with a correspondingly adjusted transverse adjustment of the control roller stopped.
  • the tensioning roller ensures on the empty run side for a constant belt tension by a increasing deflection of the belt and ensures flawless Belt guide.
  • Periodically moving the control roller and the Tensioner pulley and the associated increasing or decreasing deflection the belt in the area of the work strand and also the empty strand thus influences the rotational movement of the driven wheel in the sense of deceleration and stopping or when moving back in the sense of accelerating and the circular conveyor coupled with this driven wheel makes as a transporter this rotary movement or conveying movement with and is also periodic decelerated or stopped or accelerated, which is easy intermittent feed.
  • the conveyor speeds can now regardless of any take-off accelerations of the Sewing material or workpiece can be selected, the frequency of the feed steps and the respective step lengths from the frequency of the control roller transverse adjustment and depend on the rotational speed of the belt drive, so that greatest freedom in controlling the funding movement. Due to the missing lifting component in the feed step, one is suitable such drive device is ideal for simultaneously driving two pairs interacting transporters, the workpiece between them exactly and optimal feed conditions for two or more superimposed ones Ensure workpieces.
  • control roller could be mounted on a slidable slide or the like. Sitting, but expediently relocates the control roller to one a pivot axis that is pivotally adjustable parallel to the drive wheel axis Control lever so that the transverse adjustment can be achieved as a swivel movement lets that are easily varied by changing the leverage ratio can.
  • control lever about a to the drive wheel axis is particularly advantageous coaxial swivel axis is pivotally supported and in addition to the control roller also receives the preferably resiliently supported tension roller.
  • control pulley and tension pulley move on concentric arcs around the Drive wheel axis, so that the deflection and release movements of The control and tensioning pulley are the same and a perfect belt guidance possible is. Differences occurring in the length range of the work or empty run can be done without stressing the belt elasticity by a resilient Support of the tension pulley can be intercepted.
  • a differential feed device is provided from two conveyor belts, wherein the two conveyor belts are connected to one another via a belt drive stand, its long strap in the area of the work and empty dreams again via a periodically transverse control roller or a Tension roller runs.
  • the two conveyor belts of the differential conveyor are in the feed direction in front of and behind the needle or the processing point arranged and allow a workpiece feed guided on both sides of the machining.
  • the speed of the two conveyor belts can be relative change to each other so that the sewing material either during sewing pushed together and curled or pulled apart and stretched can be.
  • a structurally simple adjustment option for the control roller or tension roller results if the control roller has an eccentric with one to the Belt drive axles parallel axis of rotation rotatable and drivable eccentric shaft forms and the tension pulley sits on a spring-loaded swivel arm, so that a speed of the eccentric matched to the number of stitches a corresponding one Deflection of the work strand brings with it and thus the desired effect of the differential feed dog, whereby the spring-loaded swivel arm presses continuously on the empty strand of the belt and for the required Belt tension ensures.
  • a merely indicated sewing machine 1 has an upper drive shaft 2 driven crank mechanism 3 for the needle bar 4 and in at the lower end the needle bar inserted needle 5.
  • a Transporter 7 of a feed device 8 for an intermittent material feed arranged in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 in the area of the throat plate 6 is a Transporter 7 of a feed device 8 for an intermittent material feed arranged.
  • the drive for the feed device 8 is an electric motor comprehensive rotary drive 9 derived via a belt drive 10 as Intermediate drive is coupled to the feed dog 7.
  • the belt drive 10 exists from a drive wheel 11 driven by the rotary drive 9, one of these assigned output gear 12 and an extra-long belt 13, which Working section 131 of the belt 13 via a control roller 14 and the empty section 132 are guided over a tension roller 15.
  • Control lever 16 and are transverse to the belt rotation direction by means of the control lever 16 periodically adjustable back and forth.
  • the control lever 16 intervenes Setting lever 17 of an eccentric drive 18 seated on the upper drive shaft 2 on.
  • the driven wheel 12 is in turn via a rotary connection 19 made of belt drive 191 and connecting shaft 192 drive-connected to the feed dog 7, see above that the rotational movement of the driven wheel 12 in a corresponding Transmits transmission ratio proportional to the feed dog 7.
  • the conveyor 7 is designed as a differential conveyor and comprises two Conveyor belts 20, 21 lined up in series, which in turn have a conveyor belt Belt drive 22 are in drive connection with each other, this belt drive 22 to influence the relative speeds of the two conveyor belts 20, 21 similar to the belt drive 10 has an excessively long belt 23, who in the area of the working strand 231 with a control roller 24 and in the area of Empty strand 232 cooperates with a tension roller 25.
  • the control roller 24 forms here an eccentric that can be rotated and driven on a lower eccentric shaft 26 sits, which in turn via a belt drive 27 with the upper drive shaft 2 is connected to the drive.
  • the tension roller 25 is supported on a spring-loaded Swivel arm 28 and ensures a permanent tension of the by the spring load Belt 23 regardless of the position of the control roller 24th
  • the belt drive 10 allows the continuous rotary movement of the drive wheel 11 through the interaction of control and tension roller 14, 15 with the to superimpose an additional belt movement corresponding to excessively long belts 13, so that the belt movement driving the driven wheel 12 decelerates, Stopping and accelerating the driven gear movement results.
  • the control roller 14 Becomes namely by pivoting the control lever 16, the control roller 14 in Across the sense of releasing the belt 13 and thereby via the tensioning pulley 15 maintaining the belt tension occurs during this release to an interruption of the rotational movement of the driven gear 12 and moving back in the sense of a new deflection of the belt 13 to an accelerated rotary movement, whereby the driven gear 12 via the Slewing ring 19 an intermittent drive movement on the feed dog 7 is transmitted.
  • This intermittent drive movement is caused by the Conveyor belts 20, 21 of the conveyor 7 taken over, so that the desired gradual feeding of the material takes place during the sewing process. It can be by the drive connection of the two conveyor belts 20, 21 by means of the Belt drive 22, which also with the control roller 24 and the tension roller 25 in its transmission effect can be influenced, the proportional drive connection overlay an additional deceleration or acceleration component, whereby the two conveyor belts 20, 21 periodically rotate differently and in the sense of a differential feeder when sewing to one Tensioning or pushing the material together, if necessary depending on whether a smooth or crimped seam is desired.
  • the needle bar 4 is at the top dead center and the belt drive 10 in a central position with the same belt deflection in Work and empty strand area.
  • the two conveyor belts 20, 21 are synchronized connected via the belt drive 22, since the control roller 24 from the working strand 231 is lifted off.
  • the conveyor belts 20, 21 still run synchronously.
  • the feed device 8 is characterized by its particular simple intermittent and controllable within wide ranges Drive that brings a linear conveying movement for the material with it and the prerequisite for a perfect sewing material guidance practically independent of the number of stitches and the stitch width.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
EP97942697A 1996-10-04 1997-10-06 Antriebsvorrichtung für den nähgutvorschub einer nähmaschine Expired - Lifetime EP0929709B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0176096A AT404603B (de) 1996-10-04 1996-10-04 Antriebsvorrichtung für eine intermittierende förderbewegung
AT176096 1996-10-04
PCT/AT1997/000213 WO1998015678A1 (de) 1996-10-04 1997-10-06 Antriebsvorrichtung für den nähgutvorschub einer nähmaschine

Publications (2)

Publication Number Publication Date
EP0929709A1 EP0929709A1 (de) 1999-07-21
EP0929709B1 true EP0929709B1 (de) 2001-02-21

Family

ID=3520415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97942697A Expired - Lifetime EP0929709B1 (de) 1996-10-04 1997-10-06 Antriebsvorrichtung für den nähgutvorschub einer nähmaschine

Country Status (8)

Country Link
US (1) US6095070A (ja)
EP (1) EP0929709B1 (ja)
JP (1) JP2001501519A (ja)
KR (1) KR20000048795A (ja)
CN (1) CN1058308C (ja)
AT (2) AT404603B (ja)
DE (1) DE59703019D1 (ja)
WO (1) WO1998015678A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413289B (de) * 2003-11-25 2006-01-15 Sahl Johannes Nähmaschine
CN102337646B (zh) * 2011-08-03 2013-10-23 苏州日和缝制设备有限公司 缝纫机上双向超越离合器的控制机构
CN102337644B (zh) * 2011-08-03 2013-04-10 苏州日和缝制设备有限公司 缝纫机送料驱动装置
TWI468568B (zh) * 2013-08-23 2015-01-11 Chee Siang Ind Co Ltd The conveyor of the sewing machine
JP6557026B2 (ja) * 2015-02-26 2019-08-07 蛇の目ミシン工業株式会社 ミシン
CN109238583B (zh) * 2018-07-12 2020-09-25 余柳婵 一种压力开关气密性智能检测机器人工作站
JP2022071261A (ja) * 2020-10-28 2022-05-16 株式会社ジャノメ ミシン
CN115045050A (zh) * 2022-07-12 2022-09-13 广东智能体科技有限公司 一种服装生产用的埋夹机器人

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678010A (en) * 1951-03-28 1954-05-11 Singer Mfg Co Feeding mechanism for sewing machines
DE2848123C2 (de) * 1978-11-06 1983-10-06 Duerkoppwerke Gmbh, 4800 Bielefeld Nähmaschine mit einem oberen und einem unteren Transportband
US4413582A (en) * 1979-09-19 1983-11-08 Kochs Adler Ag Workpiece feeding device for a sewing machine
US4457243A (en) * 1982-02-04 1984-07-03 The Charles Stark Draper Laboratory, Inc. Automated seam joining apparatus
DE3447751A1 (de) * 1984-12-21 1986-07-03 Manfred 8024 Oberhaching Kropf Stoffvorschub-zusatzvorrichtung
JPH0710312B2 (ja) * 1986-11-15 1995-02-08 ブラザー工業株式会社 ミシンの布送り制御装置
DE9011178U1 (de) * 1990-07-30 1990-10-04 Dürkopp Adler AG, 4800 Bielefeld Einnadel- oder Mehrnadel-Nähmaschine mit einer Nähgut-Transportvorrichtung
JPH0780174A (ja) * 1993-09-10 1995-03-28 Singer Nikko Kk マスクの縫製装置

Also Published As

Publication number Publication date
KR20000048795A (ko) 2000-07-25
WO1998015678A1 (de) 1998-04-16
JP2001501519A (ja) 2001-02-06
ATE199268T1 (de) 2001-03-15
CN1232514A (zh) 1999-10-20
EP0929709A1 (de) 1999-07-21
US6095070A (en) 2000-08-01
ATA176096A (de) 1998-05-15
CN1058308C (zh) 2000-11-08
DE59703019D1 (de) 2001-03-29
AT404603B (de) 1999-01-25

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