EP2192221B1 - Machine à coudre à plusieurs aiguilles - Google Patents

Machine à coudre à plusieurs aiguilles Download PDF

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Publication number
EP2192221B1
EP2192221B1 EP08020506.5A EP08020506A EP2192221B1 EP 2192221 B1 EP2192221 B1 EP 2192221B1 EP 08020506 A EP08020506 A EP 08020506A EP 2192221 B1 EP2192221 B1 EP 2192221B1
Authority
EP
European Patent Office
Prior art keywords
needle
sewing
decoupled
gripper
thread
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
EP08020506.5A
Other languages
German (de)
English (en)
Other versions
EP2192221A1 (fr
Inventor
Klaus Stutznäcker
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.)
Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
Original Assignee
Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
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 Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG filed Critical Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
Priority to EP08020506.5A priority Critical patent/EP2192221B1/fr
Priority to US12/620,183 priority patent/US8250997B2/en
Priority to CN200910225898.1A priority patent/CN101768841B/zh
Publication of EP2192221A1 publication Critical patent/EP2192221A1/fr
Application granted granted Critical
Publication of EP2192221B1 publication Critical patent/EP2192221B1/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
    • D05B55/10—Needle bars for multiple-needle sewing machines
    • 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
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives
    • D05B55/16—Needle-bar drives with provision for disengaging individual needle bars
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/30—Details

Definitions

  • the invention relates to a multi-needle sewing machine, in particular Mehrnadelkettenstichnähmaschine with stitch-forming sewing elements having at least two needles and at least one gripper shaft and gripper hooks arranged thereon, wherein each a needle and a hook hook form a pair of sewing elements and wherein the needles and the hooks are driven such that they Execute chain stitches, in particular double chain stitches, in each case with a needle thread and a looper thread in a sewing material arranged on a sewing material support, preferably in a multilayer configuration.
  • the invention further relates to a method for forming a sewing pattern in a fabric, in particular in multi-layered design, in which by means of a plurality of sewing organs, namely at least one needle and a gripper, at least one needle thread and at least one looper thread connected as a chain stitch, in particular as a double chain stitch become.
  • At least one, preferably a plurality of needles can be adjusted between two positions or be adapted to predetermined sewing tasks in a simple manner ., wherein the needles participate in the sewing process in a first position and in a second position during the sewing process do not pierce the sewing material and that at least the one or the other adjustable between the two positions Needles is associated with a device for knotting the needle thread with the looper thread and / or a cutting device for the looper and / or needle thread.
  • Such a multi-needle chain stitch sewing machine has proven itself in the prior art.
  • EP 0 394 601 A1 a device for locking and releasing one or more embroidery needles in an embroidery machine or a multi-needle embroidery machine, wherein also here the individual needles are pneumatically reciprocated between two positions, so that the needle in one position is not at the embroidery and stitching process participates.
  • this prior art device has the disadvantage that nevertheless the entire mass of the quilting or embroidery needle must be moved even if this needle does not participate in the stitching or embroidery process.
  • a Dahlnadelkettenstichnähmaschine with two needle bars is known, which are each divided into three sections, wherein the sections each have a plurality of needles and both needle bars are driven in the same direction or in opposite directions via a common drive.
  • the needle bars are hereby alternately raised and lowered, so that the needles of a needle bar are dipped into the sewing material for stitching, while the needles of the second needle bar are pulled out of the sewing material.
  • the needles of the two needle bars are involved in the sewing process.
  • the movement of the two needle bars is alternating and synchronized with corresponding gripper bars below a Nähgutauflage.
  • a multi-needle sewing machine In a multi-needle sewing machine according to the invention is thus provided that the individual needles are connected to the oscillating moving drive shaft, the individual needles are decoupled from the drive .. Accordingly, it is no longer necessary in the multi-needle sewing machine according to the invention, all needles together with the needle bar oscillating - and off to move. The needles are driven directly.
  • the drive takes place, for example, via the driven, oscillatingly moving drive shaft and crank drives, which convert the rotational movement of the oscillatingly driven driven drive shaft into a translatory movement of the needles.
  • the oscillating moving drive shaft with the needle via a, in particular designed as a cam drive lever with a receptacle and a connecting rod is connectable, which connecting rod with the recording is coupled and decoupled.
  • the receptacle is provided on the cam and that the connecting rod is formed on the needle or a needle holder with a counterpart which can be latched into the receptacle.
  • the connecting rod is formed on the needle or a needle holder with a counterpart which can be latched into the receptacle.
  • here is also a kinematic reversal in the sense possible that the recording on the connecting rod and the counterpart is arranged on the cam.
  • the connecting rod is at least limited pivotally arranged around the needle, so that the connecting rod in a raised position of the needle can be decoupled from the recording or coupled to the recording. In the coupled position, the connecting rod extends in the longitudinal axis direction of the needle to ensure the greatest possible power transmission to the needle.
  • hydraulic or pneumatic cylinders which act on both sides and are individually controlled.
  • the pneumatic or hydraulic cylinder engage the connecting rod described above, wherein the connecting rod by means of the pneumatic and / or hydraulic cylinder in the direction of the oscillating moving drive shaft, especially the receptacle, displaceable and can be pulled out of this recording.
  • each needle is arranged replaceably in a holder, wherein the holder between the oscillating moving drive shaft and the needle is arranged.
  • the entire drive remains unchanged, so that subsequent adjustment measures are not required.
  • needles are provided with holders, wherein a needle is inserted into an axially aligned bore of the holder and fixed by means of a screw, in particular a grub screw.
  • the holder has a laterally arranged projection, which is fastened in a corresponding receptacle on a translationally movable carrier. In this manner, the holder of the needle can be moved by a movement mimic such that the projection is inserted into the corresponding receptacle and optionally locked.
  • the locking can be done purely mechanically or electromagnetically.
  • the gripper hooks can be decoupled from the gripper shaft. It has proved to be advantageous in each case to decouple the gripper from the gripper shaft, which cooperates with a correspondingly decoupled needle. Of course, there is also the possibility that the gripper hooks are basically driven even when individual needles are not driven. But this results in an additional consumption of looper thread and beyond possibly also the problem that excess looper thread wraps around the hook hook and / or the hook shaft and affects the function of the chain stitch sewing machine.
  • the needle thread is knotted with the looper thread at the end of the finished sewing pattern or, at least, after the last sewing pattern element, but in any case after a last stitch, before the beginning of the next sewing pattern element.
  • the needle and / or hook thread is cut after a last stitch, in particular before the beginning of the next sewing pattern element.
  • the cutting, in particular of the looper thread takes place here with a length which avoids that the looper thread is pulled out of arranged in the hook hook holes.
  • a length of the rapier thread to be cut off is provided on the part of the sewing material, which avoids that the chain stitch opens automatically.
  • the fabric preferably before the beginning of the next Nähmusterelements is moved in the sewing direction to withdraw the needle thread extending from a thread supply, before the needle thread is knotted with the looper thread and / or cut off.
  • An advantageous development of the method according to the invention also provides that a plurality of needles arranged on at least one needle bar are simultaneously coupled or decoupled. By this configuration, different sewing patterns can be sewn in a simple manner.
  • the needles are preferably hydraulically, pneumatically or electromechanically coupled or decoupled.
  • the invention provides that the needles are coupled or decoupled via a programmable controller.
  • the programmable controller runs in analogy to one or more sewing patterns.
  • FIG. 1 a machine frame 1 is shown in cross-section, which is formed from two U-shaped elements 2, which elements 2 are aligned with their legs in alignment with each other, so that a box-shaped machine frame 1 is formed.
  • the drive shafts 3 of the drive 5 oscillate, wherein the oscillating movement of the drive shafts 3 is converted into a translational movement of the needles 6.
  • the needles 6 are arranged in translational about the drive 5 movable brackets 7.
  • the brackets 7 are guided on both sides of the machine frame 1 mounted guide elements 8, wherein each guide element 8 has two legs 9, 10, each having a bore 11 which are arranged coaxially aligned and in which a sliding bearing 12 is attached.
  • Each holder 7 has at one of the needle 6 facing the end of a bore into which a plug-in element 13 is inserted, which is non-positively and / or positively held in the bore 11.
  • Each plug-in element 13 has a receiving bore for the needle 6 and a bore extending transversely to the receiving bore, into which a grub screw 14 is screwed for frictional connection with the needle 6.
  • the holder 7 has a hinge 15 which articulates two members together, wherein the first member 17 has a receptacle 18 for the holder 7 and the second member is formed as a connecting rod 16.
  • the holder 7 is screwed to the receptacle 18, wherein, for example, in the region of the holder 7, an external thread and in the region of the receptacle 18 is an internal thread.
  • the connecting rod 16 has at its free end a cylinder 19 which extends at right angles to the longitudinal axis of the connecting rod 16 with its longitudinal axis.
  • this cylinder 19 the connecting rod 16 with the drive 5, namely the cam 4 is connected.
  • the cam 4 at its end facing away from the drive shaft 3 end a semicircular receptacle 20, whose diameter substantially coincides with the diameter of the cylinder 19.
  • a spring element 21 is arranged on the cam 4, so that the cylinder 19 is clamped between the receptacle 20 and the spring element 21.
  • the spring element 21 is bent away at its free end of the receptacle 20.
  • the oscillating movement of the drive shaft 3 is translationally transmitted to the connecting rod 16 and thus to the holder 7 and the needle 6, so that the holder 7 and the needle 6 connected to the cam 4 connecting rod 16 in the holes 11th the guide member 8 performs guided movement up and down.
  • the leg 10 of the guide element 8 has a right angle to the leg 10 aligned and substantially L-shaped support 22 which carries in the region of its free end a linear motor 23, for example in the form of a pneumatic cylinder with which a sliding element 24 is movable.
  • the sliding element 24 has a direction of movement perpendicular to the longitudinal axis of the holder 7, wherein the sliding element 24 has a projection 25 which engages over the cylinder 19.
  • an undercut receptacle 26 made of a spring steel is arranged on the support 22.
  • the receptacle 26 is designed essentially in the shape of a circular arc section, wherein the diameter of the receptacle 26 substantially coincides with the diameter of the cylinder 19.
  • the 6 connecting rod 16 is moved between a position coupled to the cam 4 above the spring element 21 and a position in which the cylinder 19 is received in the receptacle 26 and consequently not with the cam 4 and thus the oscillating moving Drive shaft 3 is coupled.
  • the movement of the sliding element 24 is in this case carried out via the linear motor 23.
  • a stop 27 is additionally arranged at the free end of the support 22.
  • each needle 6 of each needle row has an oscillatingly moving drive 5 with a cam 4 and a connecting rod 16 and the associated movement device. All cams 4 are rotatably mounted on the drive shaft 3. There is also the possibility between each cam 4 and the drive shaft 3 to arrange a clutch that allows uncoupling or coupling of the individual cams 4 and thus the individual needles 6 with the drive shaft. With these embodiments, each individual or multiple needles 6 can thus be decoupled from the oscillatingly moving drive shaft 3, so that in the formation of a sewing pattern in a sewing material, not shown, the number and arrangement of the sewing pattern forming needles 6 can be controlled individually.
  • a significant advantage of this embodiment is that non-driven needles 6 are not moved during the sewing process, so that only the masses of the driven needles 6 are to be considered. Furthermore, this embodiment enables the shutdown of the machine frame 1, since the drive of the needles 6 takes place directly and not indirectly via the machine frame 1.
  • FIGS. 3 to 5 is a section of the FIGS. 1 and 2 shown device in three operating positions shown.
  • FIG. 3 shows here the decoupled position in which the cylinder 19 is disengaged from the receptacle 20, so that the cam 4 performs oscillating movements by the drive of the drive shaft 3 without the needle 6 is moved translationally in the direction of a Nähgutauflage 33.
  • the FIG. 3 moreover shows a position of the cam 4, in which a coupling or decoupling of the cylinder 19 with the receptacle 20 is possible.
  • the sliding element 24 is displaced in the direction of the linear motor 23, so that the sliding element 24 bears against the stop 27.
  • FIG. 4 shows one with the FIG. 3 coincident position of the cam 4 with extended from the linear motor 23 sliding element 24.
  • the member 16 is pivoted about the connecting rod 15 in the direction of the receptacle 20 and latched there by the spring element 21.
  • the member 16 is coupled via the cylinder 19 with the receptacle 20 of the cam 4, so that in the following the needle 6 is driven in an oscillating manner via the drive shaft 3 and the cam 4 such that the needle 6 is moved translationally in the direction of the fabric support 33 ,
  • a related position of the needle 6, in which the needle 6 engages through a bore 34 in the Nähgutauflage is in FIG. 5 shown.
  • FIGS. 3 to 5 show FIGS. 3 to 5 a gripper shaft 29 arranged thereon a hook hook 28 which is arranged interchangeable in a holder 35 which is rotatably connected to the gripper shaft 29.
  • the gripper hook 28 has a not shown in detail in a knee region cutting element, which is used to cut a thread, not shown, in particular of the needle thread, wherein it is provided that the cutting of the thread is carried out by a further pivotal movement of the hook hook 28.
  • the further pivotal movement of the hook hook 28 is to be understood that in a conventional pivotal movement of the hook hook 28 of the thread can not get into contact with the cutting element, whereas in the further pivotal movement of the thread slips into the cutting element.

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

Claims (16)

  1. Machine à coudre à plusieurs aiguilles, notamment une machine à coudre à point de chaînette à plusieurs aiguilles, comprenant des organes de couture formant des points, lesquels organes de couture comprennent au moins deux aiguilles ainsi qu'au moins un arbre à boucleurs et des boucleurs montés sur celui-ci, une aiguille et un boucleur respectivement formant une paire d'organes de couture, et les aiguilles et les boucleurs étant entraînés de sorte qu'ils utilisent respectivement un fil d'aiguille et un fil de boucleur pour former des points de chaînette, notamment des points de chaînette doubles, dans une matière à coudre disposée sur un support de matière à coudre, la matière à coudre ayant de préférence une structure multicouches,
    caractérisée en ce
    que les aiguilles sont indirectement ou directement reliées à un arbre d'entraînement (3) effectuant un mouvement oscillant et qu'au moins une, de préférence plusieurs aiguille(s) (6) peut/peuvent être déplacée(s) d'une position couplée à l'arbre d'entraînement (3) effectuant un mouvement oscillant dans une position découplée de l'arbre d'entraînement, de sorte que l'aiguille/les aiguilles déplacée(s) (6) dans la position découplée n'est pas/ne sont pas déplacée(s) en translation dans la direction du support de matière à coudre (33) pendant le processus de couture et ainsi ne fait pas/ne font pas de piqûre dans la matière à coudre.
  2. Machine à coudre à plusieurs aiguilles selon la revendication 1,
    caractérisée en ce
    que l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant peut être relié à l'aiguille (6) par moyen d'un levier d'entraînement notamment conçu comme une came et comprenant un logement (20) et par moyen d'une bielle (16), laquelle bielle (16) peut être couplée au logement (20) et découplée du logement (20).
  3. Machine à coudre à plusieurs aiguilles selon la revendication 1,
    caractérisée en ce
    que l'aiguille/les aiguilles (6) peut/peuvent être couplée(s) à et/ou découplée(s) de l'entraînement (5) effectuant un mouvement oscillant.
  4. Machine à coudre à plusieurs aiguilles selon la revendication 1,
    caractérisée en ce
    que chaque aiguille (6) est disposée dans un support (7) de manière interchangeable, le support (7) étant disposé entre l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant et l'aiguille (6).
  5. Machine à coudre à plusieurs aiguilles selon la revendication 4,
    caractérisée en ce
    que le support (7) est logé sur un châssis de machine (1) de manière déplaçable en translation.
  6. Machine à coudre à plusieurs aiguilles selon la revendication 1,
    caractérisée en ce
    que l'aiguille/les aiguilles (6) peut/peuvent être couplée(s) à l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant respectivement découplée(s) de l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant de manière électromécanique, notamment par moyen d'une crémaillère et un pignon entraîné par une force électromotrice, qui s'engrène avec la crémaillère.
  7. Machine à coudre à plusieurs aiguilles selon la revendication 1,
    caractérisée en ce
    que les boucleurs peuvent être découplés de l'arbre à boucleurs.
  8. Machine à coudre à plusieurs aiguilles selon la revendication 7,
    caractérisée en ce
    que les boucleurs et les aiguilles associées (6) peuvent être découplés les uns des autres.
  9. Procédé de formation d'un motif de couture dans une matière à coudre, notamment une matière à coudre ayant une structure multicouches, dans lequel au moins un fil d'aiguille et au moins un fil de boucleur sont reliés l'un à l'autre pour former un point de chaînette, notamment un point de chaînette double, par moyen d'une pluralité d'organes de couture, à savoir respectivement une aiguille et un boudeur,
    caractérisé en ce
    qu'après l'achèvement d'un point, de préférence après l'achèvement d'un élément de motif de couture, au moins une aiguille est transférée d'une position couplée à un arbre d'entraînement (3) effectuant un mouvement tournant et oscillant à une position découplée de l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant, de sorte que l'aiguille découplée de l'arbre d'entraînement (3) effectuant un mouvement tournant et oscillant ne participe au moins pas à former le point suivant, de préférence à former un élément de motif de couture suivant.
  10. Procédé selon la revendication 9,
    caractérisé en ce
    que le fil d'aiguille est noué avec le fil de boucleur après un dernier point, notamment avant de commencer l'élément de motif de couture suivant.
  11. Procédé selon la revendication 9,
    caractérisé en ce
    que le fil d'aiguille et/ou le fil de boucleur est/sont coupé(s) après un dernier point, notamment avant de commencer l'élément de motif de couture suivant.
  12. Procédé selon la revendication 9,
    caractérisé en ce
    que la matière à coudre est déplacée dans la direction de couture, de préférence avant de commencer l'élément de motif de couture suivant, pour dérouler le fil d'aiguille de manière prolongeant d'une réserve de fil avant de nouer le fil d'aiguille avec le fil de boucleur et/ou avant de les couper.
  13. Procédé selon la revendication 9,
    caractérisé en ce
    que plusieurs aiguilles disposées sur au moins une barre d'aiguilles sont simultanément couplées ou découplées.
  14. Procédé selon la revendication 9,
    caractérisé en ce
    que l'aiguille/les aiguilles est/sont couplées ou découplées de manière hydraulique, pneumatique ou électromécanique.
  15. Procédé selon la revendication 9,
    caractérisé en ce
    que l'aiguille/les aiguilles est/sont couplées ou découplées par une commande programmable.
  16. Procédé selon la revendication 15,
    caractérisé en ce
    que la commande programmable se déroule par analogie avec un ou plusieurs motifs de couture.
EP08020506.5A 2008-11-26 2008-11-26 Machine à coudre à plusieurs aiguilles Active EP2192221B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08020506.5A EP2192221B1 (fr) 2008-11-26 2008-11-26 Machine à coudre à plusieurs aiguilles
US12/620,183 US8250997B2 (en) 2008-11-26 2009-11-17 Multiple needle sewing machine
CN200910225898.1A CN101768841B (zh) 2008-11-26 2009-11-26 多针缝纫机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08020506.5A EP2192221B1 (fr) 2008-11-26 2008-11-26 Machine à coudre à plusieurs aiguilles

Publications (2)

Publication Number Publication Date
EP2192221A1 EP2192221A1 (fr) 2010-06-02
EP2192221B1 true EP2192221B1 (fr) 2017-04-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08020506.5A Active EP2192221B1 (fr) 2008-11-26 2008-11-26 Machine à coudre à plusieurs aiguilles

Country Status (3)

Country Link
US (1) US8250997B2 (fr)
EP (1) EP2192221B1 (fr)
CN (1) CN101768841B (fr)

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US20160265150A1 (en) * 2013-11-14 2016-09-15 Alberto Landoni Multi-needle quilting machine and corresponding quilting method
US8997669B1 (en) 2014-10-16 2015-04-07 Handi Quilter, Inc. Thread tensioner for a sewing machine
US9809912B2 (en) * 2014-10-16 2017-11-07 Handi Quilter, Inc. Vibration reduction mechanism for a sewing machine
US9394639B2 (en) 2014-10-16 2016-07-19 Handi Quilter, Inc. Motorized thread tensioner for a sewing machine
US10781544B2 (en) 2017-05-11 2020-09-22 L&P Property Management Company Quilting machine
US10260184B2 (en) 2017-05-11 2019-04-16 L&P Property Management Company Quilting machine
DE102019113151A1 (de) * 2019-05-17 2020-11-19 Nähmaschinenfabrik Emil Stutznäcker GmbH & Co. KG Vorrichtung zur Befestigung eines Greifers auf einer Greiferwelle einer Textilmaschine
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Also Published As

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US20100126396A1 (en) 2010-05-27
EP2192221A1 (fr) 2010-06-02
CN101768841A (zh) 2010-07-07
CN101768841B (zh) 2014-05-28
US8250997B2 (en) 2012-08-28

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