EP1136610B1 - Machine à piquer avec têtes de couture à espacement variable - Google Patents

Machine à piquer avec têtes de couture à espacement variable Download PDF

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Publication number
EP1136610B1
EP1136610B1 EP20000104573 EP00104573A EP1136610B1 EP 1136610 B1 EP1136610 B1 EP 1136610B1 EP 20000104573 EP20000104573 EP 20000104573 EP 00104573 A EP00104573 A EP 00104573A EP 1136610 B1 EP1136610 B1 EP 1136610B1
Authority
EP
European Patent Office
Prior art keywords
carriages
stitcher
hook assembly
quilting machine
sewing heads
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
EP20000104573
Other languages
German (de)
English (en)
Other versions
EP1136610A1 (fr
Inventor
Roberto Resta
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.)
Resta SRL
Original Assignee
Resta SRL
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 Resta SRL filed Critical Resta SRL
Priority to DE2000612476 priority Critical patent/DE60012476T2/de
Priority to ES00104573T priority patent/ES2224937T3/es
Priority to EP20000104573 priority patent/EP1136610B1/fr
Publication of EP1136610A1 publication Critical patent/EP1136610A1/fr
Application granted granted Critical
Publication of EP1136610B1 publication Critical patent/EP1136610B1/fr
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
    • D05B11/00—Machines for sewing quilts or mattresses

Definitions

  • the present invention relates to a quilting machine with variable-spacing stitchers.
  • a quilting machine comprises a cloth supporting carriage and a plurality of stitchers which quilt the cloth according to a preset pattern.
  • the cloth supporting carriage and the stitchers perform relative movements which allow the sewing needle to move on the cloth with two degrees of freedom in order to form a line of stitches that follows the intended path.
  • the stitchers are mounted on a frame which comprises a first beam which lies above the cloth and a second beam which is parallel to the first beam and lies below the cloth.
  • the first beam supports a guide for the sewing head of the stitcher, while the second beam supports a guide for the so-called hook assembly.
  • EP-A-0 931867 discloses a quilting machine with a pair of mutually spaced stitchers (12a,12b) supported by respective carriages each actuated individually by their own linear motor controlled by a computerized numeric control.
  • US-A-5 287 820 discloses a sewing machine with a pair of stitchers mutually spaced from each other by a selectable predetermined distance and supported on a common drive mechanism which simultaneously moves the pair of stitchers together.
  • the aim of the present invention is therefore to provide a quilting machine without suffering the conventional drawbacks, i.e., which comprises a plurality of stitchers which can be actuated so that they operate independently of each other in order to trace converging and diverging lines of stitches.
  • the reference numeral 1 designates a frame of a quilting machine, which is composed of two horizontal beams 2 and 3 which are mutually superimposed and are connected, at their opposite ends, by two respective vertical uprights 4 and 5.
  • the beams 2 and 3 and the uprights 4 and 5 enclose an opening 6 through which a cloth 7 to be quilted is fed.
  • the cloth 7 is stretched horizontally on a frame (not shown) which is movable in a longitudinal direction A at right angles to the frame 1.
  • Two mutually parallel cylindrical bars 8 and 9 are fixed to the ends of the upper beam 2 and are spaced from the beam.
  • the bars 8 and 9 form a guide along which carriages 10 and 11 are slideable along a transverse path B which is perpendicular to the path A; such carriages support sewing heads 12 and 13 of two stitchers, generally designated by the reference numerals 14 and 15.
  • the sliding of each carriage on the bars 8 and 9 is performed by two pairs of free rollers, the upper ones being designated by the reference numeral 16 and the lower ones being designated by the reference numeral 17.
  • the rollers 16 and 17 are provided with a groove along their peripheral region and tangentially engage above and below the bars 8 and 9.
  • the stitchers 14 and 15 comprise hook assemblies 18 and 19 which are actuated synchronously with the respective sewing heads 12 and 13.
  • the hook assemblies are mounted on carriages 20 and 21 which, thanks to upper slotted wheel pairs 22 and lower slotted wheel pairs 23, are slideable on two bars 24 and 25 which are fixed, by means of their opposite ends, to the lower beam 3, parallel to the upper parts 8 and 9.
  • the stitchers 14 and 15 are moved along the transverse path B above the cloth 7 by mechanically connecting the carriages 10 and 20 of the stitcher 14 to the respective carriages 11 and 21 of the stitcher 15 and synchronously actuating such carriages.
  • the carriages 11 and 21 are actuated by means of a flexible and inextensible belt 26, made for example of steel, whose ends are fixed to two L-shaped elements 27 and 28, the L-shaped element 27 being rigidly fixed to the carriage 11.
  • the other L-shaped element 28 is provided with a threaded stem 29 which protrudes toward the L-shaped element 27 and is guided through two brackets 30 and 31 which are fixed to the carriage 21.
  • a nut 32 with a respective lock nut are screwed onto the end of the stem 29 that protrudes beyond the bracket 30, so as to provide a screw-type expander which tensions the belt 7 by acting on the L-shaped element 28.
  • the belt 7 is wound in a closed loop around four guiding pulleys 33, 34, 35 and 36 and a driving pulley 37.
  • the guiding pulleys 33-36 are arranged at the corners of an imaginary rectangle at the opposite ends of the beams 2 and 3.
  • the driving pulley 37 is supported on the upright 3 between the pulleys 34 and 36, so that the belt 26 runs along a zigzag path with four parallel, superimposed and co-planar portions 38, 39, 40, 41, the portions 38 and 40 thereof moving in the same direction, which is opposite to the direction of the portions 39 and 41.
  • the carriage 21 of the stitcher 15 is fixed to the portion 40 by a clamp 42, so that the two carriages 11 and 21 move correspondingly in the direction of actuation of the belt 26.
  • the pulley 37 is provided with a ring gear 43 with which there meshes a pinion 44 of an electric motor 45 which is mounted on a bracket (not shown) which cantilevers out from the frame 1.
  • Motion is transmitted from the stitcher 15 to the stitcher 14 by two reversible electric motors 46 and 47 which are mounted on the carriages 11 and 21 and whose shafts are constituted by threaded rods 48 and 49 having the same pitch, extending between the portions 38, 39 and 40, 41 of the belt 26, and being parallel to the bars 8, 9 and 24, 25.
  • the threaded rods are engaged in female threads 50, 51 which are fixed to the carriages 10, 20 of the stitcher 14.
  • the motors 46, 47 are controlled so as to move with the same angular speed in the same direction.
  • the stitchers 14 and 15 can be moved mutually closer or further apart during their relative movement with respect to the cloth and can form two lines of stitches which follow any convergent or divergent path with respect to each other.
  • the materials employed, as well as the dimensions, may be any according to requirements and the state of the art.

Landscapes

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

Claims (9)

  1. Machine à piquer qui comprend un châssis (1) composé d'une première ensouple (2) agencée horizontalement au-dessus d'une étoffe (7) à piquer et d'une seconde ensouple (3) agencée au-dessous de ladite étoffe (7), lesdites ensouples (2, 3) étant pourvues de guides (8, 9 ; 24, 25) respectifs pour des chariots (10, 11 ; 20, 21) afin de supporter des têtes de couture (12, 13) et, respectivement, un ensemble de crochet (18, 19) d'au moins deux têtes de piqûre (14, 15), dont l'une (15) est pourvue de moyens pour déplacer l'une des têtes de couture (13) et l'ensemble de crochet (19) de manière synchrone et le long d'un même trajet et avec une même orientation, caractérisée en ce que les chariots (11, 21) qui supportent ladite une des têtes de couture (13) et l'ensemble de crochet (19) d'une première tête de piqûre (15) supportent des éléments de moteur (46, 48, 50 ; 47, 49, 51) respectifs raccordés entre les chariots (11, 21) qui supportent la première tête de piqûre (15) et les chariots (10, 20) qui supportent l'autre des têtes de couture (12) et l'ensemble de crochet (18) de la seconde tête de piqûre (14) pour le mouvement synchrone des chariots (10, 20) supportant la seconde tête de piqûre (14) vers ou à l'opposé des chariots (11, 21) correspondants qui supportent la première tête de piqûre (15), et dans laquelle, lorsque lesdits éléments de moteur ne se déplacent pas, les première et seconde têtes de piqûre se déplacent ensemble.
  2. Machine à piquer selon la revendication 1, caractérisée en ce que lesdits éléments de moteur comprennent des moteurs électriques (46, 47) qui sont supportés sur les chariots de support (11, 21) de ladite une des têtes de couture (13) et de l'ensemble de crochet (19) de ladite première tête de piqûre (15) et sont adaptés pour actionner des tiges filetées (48, 49) respectives qui sont parallèles et sont mises en prise de manière rotative dans des filetages femelles (50, 51) qui sont supportés sur les chariots (10, 20) qui supportent l'autre des têtes de couture (12) et l'ensemble de crochet (18) de la seconde tête de piqûre (14).
  3. Machine à piquer selon la revendication 1, caractérisée en ce que lesdits éléments de moteur comprennent des moteurs électriques qui sont supportés sur les chariots (11, 21) qui supportent ladite une des têtes de couture (13) et l'ensemble de crochet (19) de ladite première tête de piqûre (15) et sont adaptés pour actionner des rangées respectives qui sont parallèles et ont une extrémité qui est fixée aux chariots (10, 20) qui supportent ladite autre des têtes de couture (12) et l'ensemble de crochet (18) de ladite seconde tête de piqûre (14).
  4. Machine à piquer selon la revendication 2, caractérisée en ce que pour l'actionnement de ladite première tête de piqûre (15), il est prévu une courroie (26) flexible et inextensible qui a un point (27) fixé sur un chariot (11) de ladite première tête de piqûre (15) et enroulée dans une boucle fermée autour de quatre poulies de guidage (33, 34, 35, 36) et une poulie d'entraínement (37), lesdites poulies de guidage (33, 34, 35, 36) étant agencées sur ledit châssis (1) au niveau des coins d'un rectangle imaginaire et ladite poulie d'entraínement (37) étant agencée entre deux poulies de guidage (34, 36) superposées, de sorte que ladite courroie (26) s'enroule le long de quatre parties (38, 39, 40, 41) parallèles, coplanaires et superposées qui se déplacent dans une même direction par paires, les chariots (11, 21) supportant ladite une des têtes de couture (13) et, respectivement, l'ensemble de crochet (19) de ladite première tête de piqûre (15) étant fixés à deux (38, 40) desdites parties qui se déplacent dans la même direction.
  5. Machine à piquer selon la revendication 4, caractérisée en ce que deux moteurs électriques (46, 47) de type réversible sont montés sur lesdits chariots (11, 21), leurs arbres comprenant des tiges filetées (48, 49) qui ont le même pas et sont parallèles auxdites parties (38, 39, 40, 41) de la courroie (26) et sont mises en prise dans des filetages femelles (50, 51) qui sont fixés sur les chariots (10, 20) qui supportent ladite autre des têtes de couture (12) et l'ensemble de crochet (18) de ladite seconde tête de piqûre (14), lesdits moteurs électriques (46, 47) étant commandés afin de déplacer lesdits chariots (10, 20) avec la même vitesse et dans la même direction.
  6. Machine à piquer selon la revendication 4, caractérisée en ce que deux moteurs électriques (46, 47) de type réversible sont montés sur lesdits chariots (11, 21), leurs arbres étant pourvus de pignons qui s'engrènent avec des rangées qui sont parallèles auxdites parties (38, 39, 40, 41) de la courroie (26) et ont des extrémités qui sont fixées aux chariots (10, 20) qui supportent ladite autre des têtes de couture (12) et l'ensemble de crochet (18) de ladite seconde tête de piqûre (14), lesdits moteurs électriques (46, 47) étant commandés afin de déplacer lesdits chariots (10, 20) avec la même vitesse dans la même direction.
  7. Machine à piquer selon la revendication 5, caractérisée en ce qu'elle comprend une troisième tête de piqûre qui est commandée en prévoyant, sur les chariots (11, 21) de ladite première tête de piqûre (15), deux moteurs supplémentaires pour actionner deux tiges filetées qui mettent en prise, avec un couplage par vis, des filetages femelles respectifs qui sont fixés sur les chariots qui supportent la tête de couture et l'ensemble de crochet de ladite troisième tête de piqûre.
  8. Machine à piquer selon la revendication 2, caractérisée en ce que lesdits filetages femelles (50, 51) sont du type à vis sphérique.
  9. Machine à piquer selon la revendication 4, caractérisée en ce que ladite poulie d'entraínement (37) est pourvue d'une couronne (43) avec laquelle le pignon (44) d'un moteur (45) d'actionnement s'engrène.
EP20000104573 2000-03-14 2000-03-14 Machine à piquer avec têtes de couture à espacement variable Expired - Lifetime EP1136610B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2000612476 DE60012476T2 (de) 2000-03-14 2000-03-14 Steppmaschine mit variablen Abständen zwischen den Nähköpfen
ES00104573T ES2224937T3 (es) 2000-03-14 2000-03-14 Maquina de acolchado con puntadas de separacion variable.
EP20000104573 EP1136610B1 (fr) 2000-03-14 2000-03-14 Machine à piquer avec têtes de couture à espacement variable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20000104573 EP1136610B1 (fr) 2000-03-14 2000-03-14 Machine à piquer avec têtes de couture à espacement variable

Publications (2)

Publication Number Publication Date
EP1136610A1 EP1136610A1 (fr) 2001-09-26
EP1136610B1 true EP1136610B1 (fr) 2004-07-28

Family

ID=8168019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000104573 Expired - Lifetime EP1136610B1 (fr) 2000-03-14 2000-03-14 Machine à piquer avec têtes de couture à espacement variable

Country Status (3)

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EP (1) EP1136610B1 (fr)
DE (1) DE60012476T2 (fr)
ES (1) ES2224937T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104155913B (zh) * 2014-08-22 2017-01-18 苏州市正步机器制造有限公司 绗缝机双轴同步控制方法及其系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3047693C2 (de) * 1980-12-18 1985-05-02 Texpa Arbter-Maschinenbau GmbH, 8741 Saal Vorrichtung zum Bearbeiten der zwei parallelen Ränder einer Materialbahn
US5287820A (en) * 1991-05-02 1994-02-22 Nahmaschinenfabrik Emil Stutznacker Gmbh & Co., Kg Movable and relatively positionable sewing units for sewing stationary material
IT1299819B1 (it) * 1998-01-23 2000-04-04 Resta Srl Macchina trapuntatrice con cucitrici movimentate da motori elettrici lineari.

Also Published As

Publication number Publication date
DE60012476D1 (de) 2004-09-02
DE60012476T2 (de) 2005-07-28
ES2224937T3 (es) 2005-03-16
EP1136610A1 (fr) 2001-09-26

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