WO2017186353A1 - Machine à coudre équipée d'un dispositif de changement de boîte à canette - Google Patents

Machine à coudre équipée d'un dispositif de changement de boîte à canette Download PDF

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Publication number
WO2017186353A1
WO2017186353A1 PCT/EP2017/000536 EP2017000536W WO2017186353A1 WO 2017186353 A1 WO2017186353 A1 WO 2017186353A1 EP 2017000536 W EP2017000536 W EP 2017000536W WO 2017186353 A1 WO2017186353 A1 WO 2017186353A1
Authority
WO
WIPO (PCT)
Prior art keywords
bobbin case
sewing machine
bobbin
gripper
magazine
Prior art date
Application number
PCT/EP2017/000536
Other languages
German (de)
English (en)
Inventor
Karl-Ludwig Manuel
Original Assignee
Pfaff Industriesysteme Und Maschinen 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 Pfaff Industriesysteme Und Maschinen Gmbh filed Critical Pfaff Industriesysteme Und Maschinen Gmbh
Priority to JP2018556798A priority Critical patent/JP2019515743A/ja
Priority to EP17730055.5A priority patent/EP3449052B1/fr
Priority to CN201780032380.9A priority patent/CN109563664B/zh
Publication of WO2017186353A1 publication Critical patent/WO2017186353A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D05B59/04—Devices for changing the bobbin
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/16—Arrangements for repeating thread patterns or for changing threads

Definitions

  • the invention relates to a sewing machine for the production of lockstitches, which is provided with a needle bar for receiving an upper needle leading needle, and a rotary gripper, in which a bobbin case with a bobbin leading bobbin is receivable, and is provided with a bobbin changing device by means which can be removed from a magazine in which a plurality of bobbin caps can be arranged, in each case one bobbin case and this bobbin case can be inserted into the rotary hook
  • Sewing machines form sutures using an oscillating reciprocating needle that guides an upper thread.
  • the needle feeds a needle thread which is entangled with a bobbin thread supply for a bobbin thread for the lockstitch seam.
  • the coil is in this case in a revolving gripper, which performs a rotational movement relative to the coil, and detected at each stitch of the needle in the fabric the upper thread and devoured with the lower thread.
  • the coil is usually located in a bobbin case, which is used together with the coil in the rotary gripper of the lockstitch sewing machine and removed after their emptying together with their bobbin case and replaced with a filled bobbin.
  • a bobbin case which is used together with the coil in the rotary gripper of the lockstitch sewing machine and removed after their emptying together with their bobbin case and replaced with a filled bobbin.
  • Such magazines are disclosed, for example, in DE 10 2010 003 182 B4.
  • an endless chain conveyor is disclosed, along which several receptacles for bobbin cases are arranged along the chain.
  • the exchange process and the removal of a bobbin case from the chain conveyor is by a drawing and
  • the bobbin case changing device comprises a pivotable gripping means, with which in each case a bobbin case from a bobbin case magazine to the gripper Sewing machine can be transferred and used.
  • a pivotable gripping means with which in each case a bobbin case from a bobbin case magazine to the gripper Sewing machine can be transferred and used.
  • a further preferred embodiment of the invention which may also have independent significance, can provide that the bobbin case changing device is provided with a rotatable about a rotation axis arranged bobbin case, the distributed around the axis of rotation several shots, preferably more than two shots, each for a bobbin case having.
  • This preferred measure according to the invention can also help to make the bobbin case changing device according to the invention particularly compact and changeover operations particularly fast and safe to carry out.
  • FIG. 1 is a perspective sectional view of a quilting machine below a base plate in the region of a rotary gripper and a bobbin case changing device according to the invention, wherein the base plate and the sewing machine upper part in a
  • FIG. 2 shows an illustration according to FIG. 1 with the bobbin case changing device in a removal position for removing a bobbin case from a magazine
  • FIG. Fig. 3 is a further illustration of FIG. 2 with the
  • Bobbin case changing device in a removal position for removing a bobbin case from a magazine
  • Fig. 4 is a view according to FIG. 1, in which a gripping means of
  • Bobbin case changing device removes a bobbin case from a magazine
  • Fig. 5 is a view according to FIG. 1, in which the gripping means of
  • Fig. 6 is a view according to FIG. 1, in which the gripping means of
  • Fig. 7 is a view according to FIG. 1, in which the gripping means of
  • Fig. 8 is a view according to FIG. 1, in which the gripping means of
  • FIG. 10 shows a sectional view through the handling gripper according to FIG. 9, in which a flap of a bobbin case is pivoted and clamped by means of the handling gripper;
  • Fig. 1 an example of a designed as a lockstitch sewing machine 1 is shown in a single sectional view, the housing 2 has a lower housing-shaped so-called base plate from which a stand 3 extends substantially vertically upwards. At an upper end of the stand, an arm connects, which runs approximately parallel to the base plate 2.
  • the sewing machine has an arm shaft mounted in the arm, which, like the other basic components of the sewing machine mentioned below, are not shown in FIG. 1 or may be only partly or highly schematically represented.
  • the arm shaft drives an oscillating up and down movable needle bar to the needle holder, a needle for receiving an upper thread (not shown) can be attached.
  • a gripper device 3 is arranged with a rotary gripper whose rotational movement is synchronized with the oscillating movement of the needle bar.
  • a lower thread is on a spool, which is arranged in a multi-part bobbin case.
  • the gripper device 3 with its rotary gripper leads here in a conventional manner the guided by the needle upper thread around the bobbin case 4 so that it can form a seam together with the lower thread.
  • the needle bar and the gripper device are driven by a common drive, namely a servo electric motor, not shown, whose rotary drive movement is tapped to the needle bar and the gripper device 3 of a main shaft and translated in a certain ratio.
  • sewing machines may be provided, which are deviating designed for this purpose, for example, thereby needle bar and rotary gripper are driven differently than by a common main shaft.
  • FIGS. 1 to 8 show a representation of the assembly of the gripper device 3 arranged in the base plate 2, which is located in the base plate immediately below a throat plate.
  • the gripper device 3 has the circulating in a vertical plane rotary gripper 3, which is intended to receive in a conventional manner, the yarn reservoir receiving a coil together with its bobbin case.
  • the rotary gripper is shown without coil and bobbin case.
  • Fig. 1 the rotary gripper is shown without coil and bobbin case.
  • a coil with the lower thread supply in the rotary gripper 5 is arranged.
  • the coil 11 is for this purpose in a bobbin case 4 and can be used in the bobbin case inserted into the rotary gripper 5 and removed from the rotary gripper 5.
  • FIGS. 1-8 A preferred embodiment of a bobbin case changing device 8 according to the invention is also shown in FIGS. 1-8.
  • This has a designed as a revolver magazine 9 magazine for the arrangement of a plurality of bobbin cases 4.
  • the disc-shaped magazine 9 is rotatable about a rotation axis, wherein the drive movement for the rotational movement by means of an electric motor 0 is generated.
  • the electric motor 10 provided for this purpose is located behind the revolving magazine 9, wherein the axis of rotation of the electric motor 10 is aligned with the axis of rotation of the revolving magazine 9.
  • receptacles 12 are provided on an upper side of the disk-shaped magazine, on each of which a bobbin case 4 can be arranged. These multiple sttftförmigen receptacles 12 are evenly distributed along the imaginary circular line.
  • the revolver magazine 9 a total of 9 shots.
  • the receptacles 12 are matched to the bobbin cases 4, that the bobbins with respect to the pin-like receptacle 12 can be arranged only in a certain rotational position and secured against rotational movements on the receptacle 12.
  • the bobbin case changing device 8 auc a arranged in the turret magazine first sensor 14, with the achievement of a bobbin case at a predetermined handover or change position can be determined.
  • the transfer or change position is that always the same rotational position, on each of the bobbin case 4 of a handling gripper of Coil change device 8 is received and removed from the magazine 9.
  • a second sensor 15 arranged in the region of the transfer or change position it can be ascertained whether a bobbin case 4 is also arranged in the receptacle 12 located in the transfer or change position.
  • Signals from the sensors 14, 15 can be made available to a controller of the sewing machine and the electric motor 10 can be controlled by the controller on the basis of these signals. Based on the signals of the sensors 14, 15, the revolving magazine can be stopped in particular upon reaching a bobbin case in the transfer position.
  • the bobbin case changing device 8 is further provided with a pivot arm 18 which is pivotally mounted at one of its ends about a pivot axis 18a.
  • the pivot arm 18a For carrying out the pivoting movements in each case one of the two pivot directions, the pivot arm 18a with a motor 19, in particular an electric motor, operatively connected. Also, the motor 19 of the swing arm 18 is controlled by the control of the sewing machine.
  • Both the pivot arm 18 with its motor drive, as well as the magazine 9 with its motor drive are mounted together on a support member 24 and are held by this.
  • the carrier part 24 in turn is attached to the housing 2 of the sewing machine, the sewing machine upper part, below a base plate of the sewing machine.
  • the carrier part is fastened by a plurality of screws on the sewing machine upper part.
  • the sewing machine upper part On the same housing part of the sewing machine, here the sewing machine upper part, and the gripper device with the rotary gripper 5 is fixed and arranged.
  • the sewing machine upper part is opened and thereby arranged in a maintenance position.
  • the pivot arm 18 is provided at its free end with a handling gripper 20 for bobbin cases.
  • the handling gripper 20 is in this case arranged on a carrier 21, which in turn is fastened to the swivel arm 18.
  • the carrier 21 is movable in a straight line relative to the pivot arm 18 in a direction parallel to the pivot axis 18a. By these movements, the handling gripper 20 can be moved toward the revolving magazine 9 and withdrawn, if he is arranged by the pivot arm 18 in front of the revolver magazine 9.
  • the handling gripper 20 can be placed in front of the rotary gripper 5 of the sewing machine, as long as the handling gripper is placed in front of the rotary gripper 5 by means of the swivel arm.
  • bobbin case 4 can be removed with it arranged coil from the magazine 9 and transferred by a pivoting movement of the pivot arm 18 and a feed movement to the rotary gripper 5, to the rotary gripper 5.
  • the handling gripper 20 shown in greater detail in FIGS. 9 and 10 has a gripper receptacle 22 for arranging a bobbin case 4 on the rotary gripper 5, whose geometric shape is adapted to the geometric shape of the bobbin case 4.
  • the gripper 20 in this case has a mating surface, which corresponds in particular to the outer shape of the outer surface region of the bobbin case in the transition from its closed end face to the circumference of the bobbin case 4.
  • the receptacle 22 has a parabolic counter-surface 23, against which a portion of the peripheral region of the closed end of the Sputenkapset 4 can be brought into at least substantially positive fit in abutment. Except for its rotational position with respect to a longitudinal axis of the bobbin case 4, the bobbin case 4 is thereby clearly positioned in the handling gripper in all three spatial directions.
  • the handling gripper 20 also has a bobbin case retaining finger 25 which has a contact surface 26 inclined with respect to the orientation of the longitudinal axis of the bobbin case 4 in the handling gripper 20 and a tapered free end 27.
  • the bobbin case holding finger 25 can be moved relative to the gripper receptacle 22 and transversely to the longitudinal axis of the bobbin case 4. This movement is driven and determined by the controller. In this movement and due to the unique only one possible rotational orientation of the bobbin case 4 in the handling gripper 20, the tip of the free end 27 of the Spulenkapsei-holding finger 25 passes between a bobbin case flap 28 and the top of the closed end of the bobbin case 4.
  • the latter pivots the hinged on the bobbin case 4 bobbin flap 28th against a counter-slope 29 of the gripper receptacle 22.
  • the bobbin case flap 28 is thereby pressed along a substantial part of its longitudinal extent in a groove 30 of the counter-slope 19.
  • the bobbin case retaining finger 25 is located on the side facing away from the groove 30 of the bobbin case flap 28 against the latter and holds the bobbin case flap 28 in the groove.
  • a width of the groove 30 in this case corresponds approximately to the width of the bobbin case flap 28.
  • the bobbin case flap 28 is thus in this state in the groove 30 and the handling gripper 20 form-fitting, in particular passively form-fitting, held.
  • the bobbin case 4 is clearly positioned in the handling gripper 20 both in its spatial and in its rotary position.
  • the handling gripper 20 is also capable of releasing the bobbin case retaining finger 25, the bobbin case flap 28 and thus also the bobbin case 4 in total release again. This can be used to insert and arrange a bobbin case 4 in the rotary gripper 5 or - if it should be a necessity - in a recording of the magazine 9 and.
  • the sewing machine is also provided with a per se known sensor 32 for detecting residual thread, so a sensor with which it can be determined whether and when the lower thread bobbin has reached a certain degree of emptying and thus only a certain amount of residual thread on the spool located.
  • the sensor 32 for detecting residual thread on the spool sends a signal representing this detection result to the sewing machine control, which then initiates a spool exchange due to the detection of a residual amount of thread as the remaining thread supply, but at least the operator signals the need for Spulen (2004).
  • the controller should not interrupt the completion of the momentarily sewn on reaching the amount of residual thread seam. This ensures that the currently sewn fabric is not a committee.
  • the control triggers the exchange.
  • the last sewing process must be completed and the needle outside the rotary gripper 5 may be arranged.
  • the pivot arm 18 is pivoted from its stand-by position shown in Fig. 1 in its first pivot end position in front of the rotary gripper.
  • the gripper 20 is in this case in a position in which the longitudinal axis of the bobbin case 4 in the rotary gripper 5 is aligned with the course of the longitudinal axis of the bobbin case in the handling gripper 20, if at this time a bobbin case 4 would already be arranged in the handling gripper 20.
  • the carrier 21 is moved at the same position of the pivot arm 18 along or parallel to the longitudinal axis of the Spulenkapsei 4 on the latter, so that the recording of the handling gripper 20 is located directly above the bobbin case 4.
  • the bobbin case holding finger 25 is moved toward the bobbin case door 28 and pressed against the bobbin case counter surface 29 and into the groove 30.
  • the bobbin case 4 is thus held in the handling gripper 20.
  • the carrier 21 back to the pivot arm 18 the bobbin case 4 with the almost empty bobbin from the rotary gripper 5 are removed.
  • the pivot arm 18 is moved in the direction of the magazine 9.
  • the bobbin case retaining finger 25 is retracted before reaching the end position in front of the magazine 9, ie between the end position of the pivot arm 18 before the rotary gripper 5 and the other end position in front of the magazine 9.
  • the spring-loaded bobbin case flap 28 is thereby released and thereby pivots toward the closed end face of the bobbin case 4 and comes into abutment against this end face.
  • the almost empty bobbin case 4 can thereby fall out of the handling gripper 20 in a predetermined manner.
  • the bobbin case retaining finger 25 is retracted at a location where the handling gripper 20 is above a container into which the bobbin case 4 can fall with the nearly empty bobbin.
  • the pivotal movement of the pivot arm 18 is stopped as soon as the pivot arm 18 has reached its second end position, which is opposite to the magazine 9 (FIG. 1).
  • this end position of the handling gripper 20 is disposed opposite to a change position of the magazine 9, in which the magazine rotates one of the respective receptacles 12 so that a arranged in this receptacle 12 Bobbin case 4 can be removed together with their spool filled with bobbin thread by the handling gripper 20.
  • the first sensor 14 it is determined whether the respective bobbin case 4 is located at the intended change position.
  • the arrangement of the handling gripper 20 by means of the pivot arm 18 is also carried out here such that the gripper 20 after taking his second Schwenkendlage below only by a parallel displacement of the carrier 21 relative to the pivot arm 18 are guided over the arranged in the change position of the magazine 9 bobbin case must to order this in the receptacle 22 of the gripper 20 (Fig. 2).
  • the handling gripper 20 After the handling gripper 20 has detected the bobbin case 4 in the change position in this manner (FIG. 3), the bobbin case flap 28 is urged by the bobbin case holding finger 25 in the manner previously described against the counter-slope 29 of the receiver 22 and into it arranged groove 30, whereby the bobbin case 4 is held and detected on the handling gripper 20 in the predetermined orientation (Fig. 10).
  • the carrier 21 can be withdrawn again (FIG. 4) and the swivel arm 18 can be positioned in its first end position in front of the rotary gripper 5 (FIG. 5).
  • the handling gripper 20 with the bobbin case 4 inserted therein is then fed to the rotary gripper 5 and inserted into it (FIG. 6).
  • the bobbin case 4 is released from the handling gripper 20 and fixed in the rotary gripper 5 (Fig. 7).
  • the attachment of the standardized bobbin case 4 in the rotary gripper 5 takes place in a conventional manner. In principle the same way, the bobbins 4 are fixed in their receptacles 12 of the magazine 9.
  • Rotary gripper 25 bobbin case holding fingers

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'invention concerne une machine à coudre servant à produire des points piqués, pourvue d'une barre à aiguille servant à recevoir une aiguille guidant un fil de dessus, et présentant un crochet rotatif (5) dans lequel peut être reçue une boîte à canette (4) comportant une canette guidant un fil de dessous, ladite machine à coudre étant pourvue d'un dispositif de changement de boîte à canette (8) permettant de prélever d'un magasin (9) respectivement une boîte à canette (4) et d'introduire cette dernière (4) dans le crochet rotatif (5). L'objectif de l'invention est d'améliorer la sécurité de fonctionnement d'une telle machine à coudre équipée d'un dispositif de changement de boîte à canette. À cet effet, le dispositif de changement de boîte à canette (8) est fixé sur une partie supérieure (2) du bâti de la machine à coudre.
PCT/EP2017/000536 2016-04-30 2017-04-30 Machine à coudre équipée d'un dispositif de changement de boîte à canette WO2017186353A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018556798A JP2019515743A (ja) 2016-04-30 2017-04-30 ボビンケース交換装置を備えるソーイングマシン
EP17730055.5A EP3449052B1 (fr) 2016-04-30 2017-04-30 Machine à coudre comprenant une unité de changement du boitier de bobine
CN201780032380.9A CN109563664B (zh) 2016-04-30 2017-04-30 具有梭壳更换装置的缝纫机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016005166.3 2016-04-30
DE102016005166.3A DE102016005166A1 (de) 2016-04-30 2016-04-30 Nähmaschine mit einer Spulenkapselwechseleinrichtung

Publications (1)

Publication Number Publication Date
WO2017186353A1 true WO2017186353A1 (fr) 2017-11-02

Family

ID=59061950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/000536 WO2017186353A1 (fr) 2016-04-30 2017-04-30 Machine à coudre équipée d'un dispositif de changement de boîte à canette

Country Status (5)

Country Link
EP (1) EP3449052B1 (fr)
JP (1) JP2019515743A (fr)
CN (1) CN109563664B (fr)
DE (1) DE102016005166A1 (fr)
WO (1) WO2017186353A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019005731U1 (de) 2019-02-15 2021-09-02 Vetron Typical Europe Gmbh Nähmaschine
DE102019103847A1 (de) 2019-02-15 2020-08-20 Vetron Typical Europe Gmbh Nähmaschine
DE102019116511A1 (de) * 2019-06-18 2020-12-24 Nähmaschinenfabrik Emil Stutznäcker GmbH & Co. KG Textilmaschine sowie Verfahren zum Betrieb einer Textilmaschine
CN111455585B (zh) * 2020-05-08 2021-06-01 邓钦泽 一种绣花机全自动换底线装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015894A1 (fr) * 1989-06-22 1990-12-27 Carl Schmale Gmbh & Co. Kg Machine de remplacement automatique de canettes, notamment pour machines a coudre a point noue
EP0829565A1 (fr) * 1996-09-16 1998-03-18 Kinoshita Precision Industrial Co., Ltd. Dispositif pour changer les canettes dans les machines à coudre
JP2000061185A (ja) * 1998-08-19 2000-02-29 Tokai Ind Sewing Mach Co Ltd ミシンの下糸交換装置
WO2005108666A1 (fr) * 2004-04-16 2005-11-17 Philipp Moll Dispositif de changement de canette pour le fil de dessous sur des machines a broder ou a coudre
EP1722022A1 (fr) * 2003-11-17 2006-11-15 Tokai Kogyo Mishin Kabushiki Kaisha Dispositif de changement de canette pour machine a coudre
DE102006045061A1 (de) * 2006-09-21 2008-03-27 Zsk Stickmaschinen Gmbh Unterfadenwechselvorrichtung für eine Stick-, Stepp- oder Nähmaschine
DE102012108412A1 (de) * 2012-09-10 2014-04-10 Sekip Surget Einrichtung zum Wechseln der Unterfadenspule

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08280972A (ja) * 1995-04-20 1996-10-29 Juki Corp ボビン交換装置
JP2005312783A (ja) * 2004-04-30 2005-11-10 Barudan Co Ltd ミシンのボビン交換装置
DE102010003182B4 (de) 2010-03-23 2011-12-01 Rsg Rombold System Gmbh & Co. Kg Vorrichtung zum Wechseln einer Unterfadenspule
CN104264386B (zh) * 2014-10-20 2016-04-20 杰克缝纫机股份有限公司 自动换梭芯并绕线装置及方法
CN105442207A (zh) * 2015-12-15 2016-03-30 王桂林 电脑绣花机自动换底线装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990015894A1 (fr) * 1989-06-22 1990-12-27 Carl Schmale Gmbh & Co. Kg Machine de remplacement automatique de canettes, notamment pour machines a coudre a point noue
EP0829565A1 (fr) * 1996-09-16 1998-03-18 Kinoshita Precision Industrial Co., Ltd. Dispositif pour changer les canettes dans les machines à coudre
JP2000061185A (ja) * 1998-08-19 2000-02-29 Tokai Ind Sewing Mach Co Ltd ミシンの下糸交換装置
EP1722022A1 (fr) * 2003-11-17 2006-11-15 Tokai Kogyo Mishin Kabushiki Kaisha Dispositif de changement de canette pour machine a coudre
WO2005108666A1 (fr) * 2004-04-16 2005-11-17 Philipp Moll Dispositif de changement de canette pour le fil de dessous sur des machines a broder ou a coudre
DE102006045061A1 (de) * 2006-09-21 2008-03-27 Zsk Stickmaschinen Gmbh Unterfadenwechselvorrichtung für eine Stick-, Stepp- oder Nähmaschine
DE102012108412A1 (de) * 2012-09-10 2014-04-10 Sekip Surget Einrichtung zum Wechseln der Unterfadenspule

Also Published As

Publication number Publication date
CN109563664A (zh) 2019-04-02
DE102016005166A1 (de) 2017-11-02
EP3449052B1 (fr) 2020-07-15
CN109563664B (zh) 2023-02-28
EP3449052A1 (fr) 2019-03-06
JP2019515743A (ja) 2019-06-13

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