EP2660378B1 - Machine à coudre - Google Patents

Machine à coudre Download PDF

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Publication number
EP2660378B1
EP2660378B1 EP13162861.2A EP13162861A EP2660378B1 EP 2660378 B1 EP2660378 B1 EP 2660378B1 EP 13162861 A EP13162861 A EP 13162861A EP 2660378 B1 EP2660378 B1 EP 2660378B1
Authority
EP
European Patent Office
Prior art keywords
hopper
transport
presser foot
bar
frame
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.)
Active
Application number
EP13162861.2A
Other languages
German (de)
English (en)
Other versions
EP2660378A1 (fr
Inventor
Pavel Matejcek
Borivoj Huvar
Pavel Vybihal
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.)
Minerva Boskovice AS
Original Assignee
Minerva Boskovice AS
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 Minerva Boskovice AS filed Critical Minerva Boskovice AS
Publication of EP2660378A1 publication Critical patent/EP2660378A1/fr
Application granted granted Critical
Publication of EP2660378B1 publication Critical patent/EP2660378B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/24—Feed-dog lifting and lowering devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/20—Work-feeding means constituted by sewing needles
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices

Definitions

  • the invention relates to a sewing machine, in particular a heavy-duty sewing machine, so a sewing machine for sewing very resistant or very strong material.
  • Sewing machines and especially heavy duty sewing machines are known in many designs.
  • the DE 30 43 141 A1 and the DE 34 23 843 C2 each describe an upper transport device on a sewing machine.
  • the JP-A-2 193 693 describes another embodiment of an upper transport device for a sewing machine.
  • the inventive articulation of the hoppers member with the Hüpferantrieb via a drive member with a guide groove causes a thickness or thickness of the sewing material to be sewn has no effect on the Hüpferiolo the transport foot and the presser foot. Even with very thin or with very thick fabric, the transport foot and the presser foot can be driven in the same way by the hoppers for hopping lifting and lowering.
  • the guide groove of the joint the Hüpfergliedes with the drive member may be performed on the drive member or on the Hüpferglied.
  • the frame lever connection in which the drive member is connected via the frame lever to the frame, ensures a stable coupling of the drive member.
  • a triangular lever mechanism according to claim 2 can be realized compact and with comparatively few mechanical components.
  • a Gleitnutplatte according to claim 3 is a robust variant for the drive member.
  • a sliding block according to claim 4 avoids tilting in the region of the guide groove and reduces wear.
  • a Hüpfergetriebe according to claim 5 allows an adjustment of the Hüpferantriebs to the respective sewing requirements.
  • the Hüpfergetriebe can be driven by an arm shaft of the sewing machine, from which also a movement of other sewing components, in particular the needle bar can be derived. With the Hüpfergetriebe the Hüpferhub can be specified in particular continuously.
  • the frame lever via which the drive member is connected to the frame, can form a parallelogram arrangement with a gear lever according to claim 5. Such a parallelogram arrangement is stable.
  • a driven pivotable Nadelstangerahmen according to claim 6 provides a robust way for the material to be transported.
  • Such a fabric needle transport can be designed synchronized with the Transportfußzi synchronized.
  • the in the Fig. 1 shown sewing machine 1 comprises a housing-like base plate 2, an upper arm 3 and a stand connecting them 4.
  • the sewing machine 1 is thus formed a total of approximately C-shaped.
  • an arm shaft 5 is mounted, via which a needle bar 6 with a needle 7 by means of a crank drive, not shown in detail up and down driven.
  • the arm shaft 5 is mounted via a belt drive 8 and a bearing in the base plate 2 shaft 9 mounted in the base plate 2 and the needle 7 associated gripper, which is also not shown in detail.
  • the gripper motion Cooperating with the needle bar movement, the gripper motion, as is known, results in seaming in a stitch area.
  • a flange portion 10 is arranged on the arm shaft 5 at the level of the belt drive 8.
  • the arm shaft 5 is rotatably connected to a purpose aligned drive shaft 11 of a arm shaft drive motor 12.
  • Adjacent to the flange portion 10, the drive shaft 11 is supported via an axial / radial bearing 12 a.
  • a handwheel 14 is attached and rotatably connected via a radial screw, not shown, connected to the drive shaft 11.
  • the sewing machine 1 is designed for sewing resistant and / or strong sewing material, in particular for sewing leather, very strong cloth material and / or also of plate-like material, for example of plastic plates.
  • the components of the sewing machine 1 are carried and supported by a frame 15 of the sewing machine 1, of which the base plate 2 is a part. Part of the base plate 2 is further a fabric support plate 16, which in turn is partially formed by a throat plate 17. In the area of the throat plate 17 is located on the support plate 16 sewing material 18 (see. Fig. 2 ) in a stitch formation area. In this, the sewing needle 7 cooperates with other sewing tools, so for example with the gripper, for seam formation.
  • Fig. 2 shows in an exploded view details of a Hüpfermechanik 19 and a needle bar mechanism 19a.
  • the Hüpfermechanik 19 is connected to a transport foot 20 (see. Fig. 3 ) and a presser foot 21 for the alternate, jumping lifting and lowering on the one hand the transport foot 20 and on the other hand the presser foot 21 connected relative to the throat plate 17.
  • the needle bar mechanism 19a is connected to the needle bar 6 and is part of an otherwise not shown needle bar drive for needle transport of the fabric 18th
  • a Cartesian xyz coordinate system is used below.
  • the x-direction runs in the Fig. 1 to the right.
  • the y-direction is perpendicular to the plane of the Fig. 1 into this.
  • the z-direction runs in Fig. 1 up.
  • the arm shaft 5 is parallel to the x direction.
  • the z-axis is perpendicular to the support plate 16th
  • the transport foot 20 is attached to a transporting foot bar 22 and cooperatively cooperates with the sewing needle 7 for transporting the work cloth 18 along a transporting direction T extending in the positive y-direction.
  • the presser foot 21 is attached to a presser foot bar 23 and serves to clamp the work cloth 18 on the throat plate 17 during a hold period within one stitching period of the sewing machine 1.
  • the Hüpfermechanik 19 is articulated on the Transportfußstange 22, on the presser foot rod 23 and on a Hüpferantrieb 25.
  • the Hüpfermechanik 19 is designed as a triangular lever mechanism with triangular lever as the Hüpferglied 24.
  • About a first joint with hinge pin 26 of the triangle lever 24 is articulated to a Transportfußhebel 27 which is articulated via a transport foot joint 28 on the Transportfußstange 22.
  • a second joint with a hinge pin 29 of the triangle lever 24 is hinged to the presser foot rod 23. Between the Hüpferglied 24 and the hinge pin 29 is still a washer 29a arranged.
  • the triangular lever 24 is articulated to a drive member 32 of the hoppers 19.
  • the drive member 32 transmits a drive movement of the hüpferantriebs 25 on the triangle lever 24.
  • the drive member 32 is designed as Gleitnutplatte with a sliding groove 33 , which is also referred to as a linear guide.
  • the sliding groove 33 extends on the viewer of the FIGS. 2 to 6 facing away from Gleitnutplatte 32.
  • the sliding groove 33 is in the Figures 2 and 3 indicated by dashed lines.
  • the sliding groove 33 extends approximately parallel, so at most at a small angle to the z-axis.
  • the drive member 32 has a drive joint with hinge pins 34, via which a gear drive lever of the Hüpferantriebs 25 in the form of a presser foot lever 35 is hinged to the drive member 32.
  • the presser foot lever 35 is non-rotatably connected to a presser foot shaft 36.
  • the presser foot shaft 36 constitutes a hoppers drive shaft.
  • the presser foot shaft 36 is driven via a pusher foot gear 37, which is also referred to as a Hüpfergetriebe.
  • a Hüpferhub the Hüpferantriebs 25th be specified. This is done via the rotational position of a gearbox adjustment shaft 38 of the presser foot gear 37.
  • the presser foot gear 37 is in operative connection with the arm shaft 5, which is in Fig. 2 indicated by dashed lines.
  • the presser foot gear 37 is a plate-type transmission with a plurality of gear lugs 41. The mode of operation of such a plate gear is described using the example of a stitch actuator transmission in FIG EP 2 330 241 A1 ,
  • presser foot gear 37 is a stepless specification of a Hüpferhubes a Hüpferroach the Transportfußstange 22 and the presser foot 23 is possible.
  • the drive member 32 so the Gleitnutplatte is hingedly connected to a frame lever 43 via another joint with hinge pin 42.
  • the latter is connected via another joint with hinge pin 44 with the frame 15 of the sewing machine 1, which in Fig. 2 is indicated.
  • This articulation of the frame lever 43 on the frame 15 simultaneously represents a point of articulation for a needle bar frame 45 which is part of the needle bar mechanism 19a.
  • the Nadelstangerahmen 45 has a guide sleeve portion 46 in which the needle bar 6 and the Transportfußstange 22 are guided.
  • the needle bar frame 45 is pivoted about a needle bar drive, not shown, about a hinge axis predetermined by the hinge pin 44, which runs parallel to the x-axis.
  • the hinge pin 44 provides a pivot point on the one hand for the needle bar frame 45 and on the other hand for the frame lever 43.
  • a bias of the presser foot rod 23 toward the throat plate 17 is predetermined via an adjusting screw 47 which acts on the presser foot rod 23 via a biasing spring 48.
  • Fig. 3 shows the Hüpfermechanik 19 and the needle bar mechanism 19a in a rod-relative position, in which the pusher bar 23 in an upper position, the Transportfußstange 22 are shown in a lower and also the needle bar 6 in a lower position. In this position, the transport foot 20 clamps the sewing material 18 onto the throat plate 17, so that the sewing material 18 can be transported safely.
  • the sewing material 18 has in the representation of the rod relative positions after the Figures 3 and 4 a thickness of 2 mm.
  • Transportfußstange 22 is in their in the Fig. 3 shown lower position far in the negative z-direction to the throat plate 17 to lowered. This has no effect on the Hüpferhub the Hüpfermechanik 19, since the Hüpferglied 24 relative to the drive member 32 can move in the negative z-direction with the Transportfußstange 22 and the presser foot rod 23 (see arrow V in Fig. 3 ).
  • Fig. 5 shows the in Fig. 3 corresponding rod relative position of the transport bar 22 of the presser foot rod 23 and the needle bar 6 at very thick material 18 '.
  • the fabric 18 ' has a thickness of 20 mm.
  • the transport foot 20 in its lower, the fabric 18 'clamping position after Fig. 5 in comparison to the position after Fig. 3 shifted by a significant amount in the positive z-direction.
  • the articulation of the Hüpfergliedes 24 with the drive member 32 can compensate for this, since the Hüpferglied 24 due to the straight guide on the sliding groove 33 in the positive z-direction (see arrow V in Fig. 5 ) can relocate.
  • the thickness of the material to be sutured 18, 18 'thus has virtually no influence on the Hüpferschul and in particular virtually no influence on the Hüpferhub the Transportfußes 20 and the presser foot 21. Even with very thin material, for example, the fabric 18 or very thick material, for example, the fabric 18 ', the transport foot 20 and the presser foot 21 can be driven in the same way by the hüpferantrieb 25 for hopping raising and lowering.
  • Fig. 4 shows the thin sewing material 18, the relative rod position with the presser foot rod 23 in the lower position in which the presser foot 21, the workpiece 18 is clamped on the needle plate 17, and with the Transportfußstange 22 and the needle bar 6 in an upper position.
  • FIGs 5 and 6 again show the change between the rod relative positions “pusher bar 23 above, transport bar 22 below and needle bar 6 below” on the one hand (see. Fig. 5 ) and "presser rod 23 at the bottom, transport bar 23 at the top and needle bar 6 at the top” on the other hand (cf. Fig. 6 ).
  • Due to the stronger Nähgut 18 'compared to the application in the Figures 3 and 4 is in the Figures 5 and 6 the hopping member 24, so the triangle lever, relative to the drive member 32, ie relative to Gleitnutplatte, displaced in the positive z-direction (see arrow "V" in Fig. 5 ).
  • a guide or sliding groove 33 may also be performed on the triangle lever 24 in the manner of the sliding groove 33.
  • Fig. 7 shows the thin sewing material 18, the relative rod position with the presser foot rod 23 when reaching the lower position, with the Transportfußstange 22 continues in the lower position and with the needle bar 6 between the lower position after Fig. 3 and the upper position Fig. 4 ,
  • Fig. 8 shows the thick material to be sewn 18 ', the relative rod position corresponding to Fig. 7 ,

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

Claims (7)

  1. Machine à coudre (1)
    - comprenant un bâti (15)
    - comprenant un plateau support (16) pour la pièce à coudre,
    - comprenant une barre à aiguille (6) avec une aiguille à coudre (7), qui agit conjointement avec d'autres outils de couture dans une zone de piquage en vue de la formation d'une couture,
    - comprenant un pied transporteur (20) fixé sur une barre de pied transporteur (22) pour le transport de la pièce à coudre (18 ; 18') le long d'une direction de transport (T),
    - comprenant un pied presseur (21) fixé sur une barre de pied presseur (23) pour le maintien de la pièce à coudre (18 ; 18') dans une position pincée sur le plateau support (16) pendant la durée de la période de formation du point,
    - comprenant un système mécanique fonctionnant par saccades (19) qui est relié, d'une part, avec le pied transporteur (20) et d'autres part, avec le pied presseur (21), pour alternativement les lever et les descendre par rapport au plateau support (16),
    - le mécanisme fonctionnant par saccades (19) étant articulé sur la barre du pied transporteur (22), sur la barre du pied presseur (23), sur un entraînement fonctionnant par saccades (25) par l'intermédiaire d'un organe fonctionnant par saccades (24),
    - une liaison articulée de l'organe fonctionnant par saccades (24) étant ainsi réalisée avec l'entraînement fonctionnant par saccades (25) par l'intermédiaire d'un organe d'entraînement (32) avec une rainure de guidage (33) de sorte qu'un déplacement relatif de la barre du pied transporteur (22) et de la barre du pied presseur (23), en fonction de l'épaisseur de la pièce à coudre, est réalisé d'une part, vers l'organe d'entraînement (32), d'autre part, le long d'un trajet de déplacement (V) perpendiculairement par rapport au plateau support (16) sans manoeuvre d'entraînement de l'organe fonctionnant par saccades (24),
    - l'organe d'entraînement (32) étant relié avec le bâti (15) par l'intermédiaire d'un levier de bâti (43).
  2. Machine à coudre selon la revendication 1, caractérisée en ce que le mécanisme fonctionnant par saccades (19) est conçu sous la forme d'un mécanisme à levier en triangle avec un levier triangulaire servant d'organe fonctionnant par saccades (24), qui est articulé
    - sur la barre du pied transporteur (22) par l'intermédiaire d'une première articulation (26),
    - sur la barre du pied presseur (23) par l'intermédiaire d'une deuxième articulation (29),
    - sur l'organe d'entraînement (32) par l'intermédiaire d'une troisième articulation (30).
  3. Machine à coudre selon les revendications 1 ou 2, caractérisée en ce que l'organe d'entraînement (32) est conçu sous la forme d'une plaque à rainure de coulissement, dans la rainure de coulissement de guidage (33) de laquelle est menée une barre de guidage (30) de l'organe fonctionnant par saccades (24).
  4. Machine à coudre selon la revendication 3, caractérisée en ce que la barre de guidage (30) dans la rainure de coulissement de guidage (33) est menée par l'intermédiaire d'un coulisseau (31).
  5. Machine à coudre selon l'une des revendications 1 à 4, caractérisée en ce que l'organe d'entraînement (32), par l'intermédiaire d'un levier d'entraînement (35) et d'un arbre d'entraînement fonctionnant par saccades (36), est relié avec un entraînement fonctionnant par saccades (37), par lequel un mouvement fonctionnant par saccades vers le haut de la barre du pied transporteur (22) et de la barre du pied presseur (23) peut être présélectionné.
  6. Machine à coudre selon l'une des revendications 1 à 5, caractérisée en ce que la barre à aiguille (6) peut être pivotée, entraînée avec un bâti de la barre à aiguille (45), vers le transport de l'aiguille de la pièce à coudre, bâti qui est relié de façon articulée avec le bâti (15) par un point d'articulation de bâti de barre à aiguilles (44).
  7. Machine à coudre selon la revendication 6, caractérisée en ce que le levier de bâti (43) est articulé sur le bâti (15) par l'intermédiaire d'un point d'articulation de bâti de barre à aiguille (44).
EP13162861.2A 2012-05-02 2013-04-09 Machine à coudre Active EP2660378B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012207257.8A DE102012207257B4 (de) 2012-05-02 2012-05-02 Nähmaschine

Publications (2)

Publication Number Publication Date
EP2660378A1 EP2660378A1 (fr) 2013-11-06
EP2660378B1 true EP2660378B1 (fr) 2015-04-01

Family

ID=48049877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13162861.2A Active EP2660378B1 (fr) 2012-05-02 2013-04-09 Machine à coudre

Country Status (6)

Country Link
EP (1) EP2660378B1 (fr)
JP (1) JP6159568B2 (fr)
KR (1) KR102015312B1 (fr)
CN (1) CN103382628B (fr)
DE (1) DE102012207257B4 (fr)
TW (1) TWI595134B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014213877A1 (de) * 2014-07-16 2016-01-21 Dürkopp Adler AG Nähmaschine
JP6552233B2 (ja) * 2015-03-20 2019-07-31 蛇の目ミシン工業株式会社 ミシン
DE202015104412U1 (de) * 2015-08-20 2016-11-22 Dürkopp Adler AG Nähmaschine sowie Nähmaschinen-Baugruppe
DE102015220332A1 (de) * 2015-10-19 2017-04-20 Pfaff Industriesysteme Und Maschinen Gmbh Nähanlage
CN107227560B (zh) * 2017-08-07 2019-11-01 台州市三本缝制设备有限公司 一种新型小头缝纫机
US11946182B2 (en) * 2022-02-09 2024-04-02 Steven Marcangelo Sewing machine with adjustable stepping height and related methods

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196815A (en) * 1962-01-05 1965-07-27 Duerkoppwerke Sewing machine having lower and upper work-feeding members
DE3043141A1 (de) * 1980-11-15 1982-07-29 Dürkoppwerke GmbH, 4800 Bielefeld Obertransportvorrichtung
DE3423843C2 (de) * 1984-06-28 1987-04-30 Kochs Adler Ag, 4800 Bielefeld Obertransportvorrichtung an einer Nähmaschine
DE3724787A1 (de) * 1987-07-27 1989-02-16 Pfaff Ind Masch Naehmaschine mit einer obertransporteinrichtung
JPH02193693A (ja) * 1989-01-24 1990-07-31 Juki Corp ミシンにおける上送り機構の水平駆動装置
DE4230747A1 (de) * 1992-09-14 1994-03-17 Duerkopp Adler Ag Verfahren zum Betreiben einer Nähmaschine
EP2330241A1 (fr) * 2009-12-04 2011-06-08 Dürkopp Adler AG Machine à coudre

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528295A1 (de) * 1985-08-07 1987-02-19 Pfaff Ind Masch Naehmaschine mit einer abtastvorrichtung
JPS63117792A (ja) * 1986-11-06 1988-05-21 三菱電機株式会社 交互上下送りミシン
DE3724786A1 (de) * 1987-07-27 1989-02-16 Pfaff Ind Masch Naehmaschine mit einer obertransporteinrichtung
WO1990008850A1 (fr) * 1989-01-27 1990-08-09 G.M. Pfaff Aktiengesellschaft Machine a coudre a transporteur superieur
JPH04314493A (ja) * 1991-04-12 1992-11-05 Brother Ind Ltd ミシンの上送り装置
JPH0733738Y2 (ja) * 1991-05-30 1995-08-02 バンマシン株式会社 ミシンの上送り装置
DE102005029955A1 (de) * 2005-06-28 2007-01-04 Dürkopp Adler AG Nähmaschine
JP2008104718A (ja) * 2006-10-26 2008-05-08 Juki Corp ミシンの送り機構

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196815A (en) * 1962-01-05 1965-07-27 Duerkoppwerke Sewing machine having lower and upper work-feeding members
DE3043141A1 (de) * 1980-11-15 1982-07-29 Dürkoppwerke GmbH, 4800 Bielefeld Obertransportvorrichtung
DE3423843C2 (de) * 1984-06-28 1987-04-30 Kochs Adler Ag, 4800 Bielefeld Obertransportvorrichtung an einer Nähmaschine
DE3724787A1 (de) * 1987-07-27 1989-02-16 Pfaff Ind Masch Naehmaschine mit einer obertransporteinrichtung
JPH02193693A (ja) * 1989-01-24 1990-07-31 Juki Corp ミシンにおける上送り機構の水平駆動装置
DE4230747A1 (de) * 1992-09-14 1994-03-17 Duerkopp Adler Ag Verfahren zum Betreiben einer Nähmaschine
EP2330241A1 (fr) * 2009-12-04 2011-06-08 Dürkopp Adler AG Machine à coudre

Also Published As

Publication number Publication date
EP2660378A1 (fr) 2013-11-06
KR20130123319A (ko) 2013-11-12
DE102012207257A1 (de) 2013-11-07
TW201400664A (zh) 2014-01-01
JP6159568B2 (ja) 2017-07-05
CN103382628B (zh) 2016-07-06
JP2013233427A (ja) 2013-11-21
KR102015312B1 (ko) 2019-08-28
TWI595134B (zh) 2017-08-11
CN103382628A (zh) 2013-11-06
DE102012207257B4 (de) 2014-01-16

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