EP1233096B1 - Machine à coudre multi-aiguille et méthode pour produire un motif de couture dans un ouvrage de couture - Google Patents

Machine à coudre multi-aiguille et méthode pour produire un motif de couture dans un ouvrage de couture Download PDF

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Publication number
EP1233096B1
EP1233096B1 EP02003310A EP02003310A EP1233096B1 EP 1233096 B1 EP1233096 B1 EP 1233096B1 EP 02003310 A EP02003310 A EP 02003310A EP 02003310 A EP02003310 A EP 02003310A EP 1233096 B1 EP1233096 B1 EP 1233096B1
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EP
European Patent Office
Prior art keywords
needle
thread
sewing
stitch
gripper
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
EP02003310A
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German (de)
English (en)
Other versions
EP1233096A3 (fr
EP1233096A2 (fr
Inventor
Klaus Stutznäcker
Hartmut Klapp
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
Priority claimed from DE10125108A external-priority patent/DE10125108B4/de
Application filed by Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG filed Critical Naehmaschinenfabrik Emil Stutznaecker GmbH and Co KG
Publication of EP1233096A2 publication Critical patent/EP1233096A2/fr
Publication of EP1233096A3 publication Critical patent/EP1233096A3/fr
Application granted granted Critical
Publication of EP1233096B1 publication Critical patent/EP1233096B1/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
    • D05B55/00—Needle holders; Needle bars
    • D05B55/10—Needle bars for multiple-needle sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B11/00—Machines for sewing quilts or mattresses
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices

Definitions

  • the invention relates to a multi-needle chain stitch sewing machine with stitch-forming sewing elements comprising at least one needle bar and attached needles and at least one gripper shaft to which gripper hooks are attached, wherein the needles and the gripper hooks each form a pair of sewing elements and are driven so that they each with one Needle thread and a looper thread chain stitches, in particular double chain stitches, perform in a arranged on a fabric support fabric, preferably in multi-layered design.
  • 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 sewing thread and at least one looper thread connected as a chain stitch, in particular as a double chain stitch become.
  • multi-needle sewing machines are known from the prior art.
  • so-called multi-needle lock stitching machines are to be distinguished from multi-needle chain stitch sewing machines.
  • US 5,005,499 discloses a multi-needle lockstitch machine with one or more needle bars, on each of which a plurality of stitch forming needles is arranged.
  • this prior art multi-needle stitch sewing machine individual needles depending on the sewing pattern to be reciprocated by pneumatic cylinders between two positions, these needles participate in a first position on the sewing process and are raised in a second position such that they are not in during the sewing process prick the sewing material.
  • a needle When chain stitching or double chain stitch, a needle brings a thread to the lowest point of their movement path and forms in their subsequent upward movement of a loop of thread. While the needle moves back to its highest position after formation of the thread loop, a gripper engages with a looper thread in the thread loop. When transporting the material to the next stitch in sewing direction and the next downward movement of the needle, the gripper is pivoted back to its original position, while the needles in a through the loop of thread and pierces the looper thread tensioned thread triangle and thus forms a chain link of the chain stitch.
  • the chainstitch or double-chainstitch has the advantage that it forms smooth seams and avoids the so-called displacement curl largely because the entanglement of needle and looper thread is not drawn into the fabric as in the lockstitch, but lies on the underside of the fabric .
  • thinner sewing threads can be used in comparison to the lockstitch.
  • the chain stitch or the double-chain stitch has the advantage that the needle thread is subject to a far lower abrasion compared to the lockstitch, which is due to the fact that per stitch formation in a double chain stitch less thread is pulled back and forth through the eye of the needle.
  • the chain stitch or double chain stitch therefore has the greater strength compared to the lockstitch.
  • the disadvantage of the chain stitch or double-chain stitch is that even minor missed stitches or a thread break in the area of the needle and / or looper thread causes the thread chain can be easily opened.
  • a needle bar carrying the needles is in a raised and a gripper shaft carrying the gripper in a swung back position.
  • the looper thread, which is withdrawn from a spool, is guided in this procedure along the underside of the workpiece, without being connected to the material in this area.
  • the needle thread is cut after completion of a sewing pattern element by a cutting device and that at the beginning of the next sewing pattern element a completely new sewing process is initiated.
  • EP 0 727 519 A1 discloses a multi-needle chain stitch sewing machine which forms a multiplicity of needles arranged on a needle bar in three rows of needles with a plurality of hook hooks arranged underneath a cloth support pair of needle element pairs which jointly execute double chain stitches in a sewing material.
  • this prior art Doppelkettenstichnähmaschine a cutting device in the region of the hook hook and thus below the Nähgutauflage, are cut with the all needle threads after completion of a NähGermanettis in the fabric.
  • This cutting device consists of three tensioned and heated wires, each wire is associated with a gripper shaft arranged thereon with hook hooks and thus also each a needle bar and arranged thereon needles.
  • the cutting device namely the three heated wires are stretched between two oppositely arranged and centrally driven support elements so that they can be brought into contact with the needle threads as needed, namely after completion of a sewing pattern element, so that all needle threads are cut together at the same moment.
  • EP 0 394 601 A1 discloses a device for locking and releasing one or more embroidery needles in a quilting machine or a Mehmadel embroidery machine.
  • a quilting machine or multi-needle embroidery machine has a pair of needle carrier bars, wherein on at least one of the needle carrier bars at least one needle is arranged, which is controllable with regard to their participation in the embroidery or stitching process.
  • a linear motor is provided in the form of a pneumatic piston, the cylinder is attached to the needle carrier rod and with the piston rod, the embroidery or quilting needle between two positions back and forth, with the embroidery needle or quilting needle in one position, namely lowered Position participates in the sewing process, while this embroidery or needle in a raised position does not participate in the stitching or embroidery process.
  • US-A-5 509 365 discloses a multi-needle chain stitch sewing machine having two needle bars each divided into three sections, the sections each having a plurality of needles and both needle bars being co-driven in the same direction or in opposite directions.
  • the needle bars are alternately raised and lowered, so that in each case a needle bar in a first Nähgutab bain a chain stitch per needle stitches, while the second needle bar is arranged at the same time in a raised position. Subsequently, the first needle bar moves to the raised position, while the second needle bar is lowered to sew a chain stitch with each needle.
  • the movement of the two needle bars is synchronized and synchronized with corresponding gripper bars below a Nähgutauflage, so that with each lowering of a needle bar a chain stitch per needle is sewn.
  • the invention has the object , a multi-needle chain stitch sewing machine or a method for forming a sewing pattern in a fabric in such a way that additional and / or complementary pattern can be sewn into the fabric in a simple manner.
  • a multi-needle chain stitch sewing machine according to the invention should be designed to be adaptable to predetermined sewing tasks in a simple manner.
  • the solution to this problem provides in a generic Learnnadelkettenstichnähmaschine that at least one, preferably a plurality of needle (s) is adjustable between two positions or are, wherein the Needle (s) participates or participate in the sewing process in a first position and in a second position during the sewing process does not pierce or pierce the fabric and that at least the or between the two positions adjustable needle (s) a device for Knotting the needle thread is associated with the looper thread and / or a cutting device for the needle and / or looper thread.
  • the arrangement of height-adjustable needles is provided on a Dahlnadelkettenstichnähmaschine. It should be noted that it is possible in lockstitch machines to raise the needles during the sewing process, which is not possible in the formation of chain stitches, as this would produce false stitches that allow the opening of the thread chain. In addition to the ability to adjust the individual needles between two positions, it is in a multi-needle chain stitch sewing machine in securing a chain stitch required that at least in the region of adjustable needles each have a device for knotting the needle thread is provided with the looper thread to the automatic opening to prevent the thread chain in this area.
  • a cutting device for the needle and / or hook thread can be provided for this device, which makes it possible to cut off at least the needle thread with a corresponding length before or after execution of the knot, without the risk of self-opening of the thread chain or the chainstitch is made.
  • the invention provides a combination of a Dahlnadelkettenstichnähmaschine with height-adjustable needles, a device for knotting the needle thread and / or a cutting device for the needle and / or looper thread, with the unpredictable and advantageous manner, the above object can be achieved ,
  • the adjustable between two positions in height needles are arranged in the edge region and / or in the middle area of the needle bar. It has been shown that in particular in these areas additional training of Nähmustern or
  • Sewing pattern elements are beneficial.
  • an additional sewing work in the edge region of the sewing material is made possible, which is particularly advantageous in the case of multi-layered sewing material in that an improved connection of the juxtaposed fabric layers is achieved here.
  • the adjustable between two positions needles are arranged alternately with non-adjustable needles on the needle bar.
  • all the needles of one or all needle bars are adjustable between two positions.
  • the adjustable between two positions needles are adjustable via a drive.
  • This drive of the needles which can be adjusted between two positions, preferably has a pump for a hydraulic or a pneumatic pressure medium and at least one linear motor. But it can also be provided that each needle has its own linear motor as a drive and that individual needles are adjusted via a hydraulic and / or pneumatic control.
  • the drive is designed as an electromechanical drive, in particular consisting of a rack and an electric motor driven, meshing with the rack pinion.
  • the cutting device is designed as a knife blade.
  • the cutting device it has proven to be advantageous to arrange the cutting device on the hook hook or on a spreader associated with the Nähorgancru. If the cutting device is provided on the hook hook, the cutting device on the hook hook can be brought into contact with the corresponding thread via an additional pivoting movement of the hook shaft in order to cut off the thread in sufficient length from the last connection point between hook thread and needle thread.
  • the work piece support has a work piece transport device which serves to transport the work piece in at least two opposite directions.
  • the fabric transport device With the fabric transport device, the fabric is advanced on the Nähgutauflage before activation of the adjustable needles in sewing direction, whereby additional thread is withdrawn from a thread supply to pull the needle thread to a length before cutting, which excludes an automatic opening of the thread chain.
  • the needle thread is knotted with the looper thread before or after the transfer of the needle in the second raised position.
  • the knotting is done in the simplest case, that in the last stitch needle and looper thread is tightened and thus retracted into the fabric, for example, that the fabric is transported, while a needle thread loop is still wrapped around the gripper.
  • the needle thread is cut after the completion of a seam and the last stitch and is at the beginning of a further sewing pattern element in a second position.
  • the needle thread has previously been knotted with the looper thread, the needle thread can be cut off relatively short become. If, on the other hand, a knotting of the needle thread with the hook thread has been dispensed with or this knotting has been carried out inadequately, then the needle thread is cut off with a relatively long thread end.
  • the material to be sewn preferably before the beginning of the next sewing pattern element, is moved in the sewing direction in order to extend the needle thread lengthwise from a thread supply before the needle thread is knotted with the looper thread and / or cut off.
  • a sufficient length of the needle thread is provided, which is sufficient both for knotting with the needle thread and for the cutting process, without the risk that the thread chain opens automatically and that the needle thread for the next sewing a sewing pattern element sufficient Length.
  • a plurality of needles arranged on at least one needle bar are simultaneously transferred from the first to the second position. It can also be provided that all needles are transferred simultaneously from the first to the second position or vice versa.
  • a further feature of the method according to the invention provides that the needle (s) is / are moved hydraulically, pneumatically or electromechanically.
  • the needle or needles is / are controlled via a programmable controller.
  • the programmable controller preferably runs in analogy to one or more sewing patterns. Accordingly, it is provided that, for example, in a computer, a sewing pattern or a plurality of sewing patterns, which preferably have a multiplicity of sewing pattern elements, are stored. The data of these sewing patterns are transmitted via the programmable controller to a known transport device for the sewing material and to the needles, so that a fully automatic It is possible to control the multi-needle chain stitch sewing machine without having to rebuild the machine during the sewing process.
  • the control technology can also provide that the stored sewing patterns or sewing pattern elements are combined with each other and used to control the needles.
  • a multi-needle chain stitch sewing machine has a machine frame 1 in which a row of needles 2 is located in the upper part, the individual driven needles 31 being arranged side by side substantially perpendicular to the image plane.
  • the reference numeral 3 denotes a conventional presser foot and 4 denotes a row of grippers corresponding to the row of needles 2.
  • the sewing material consists of an upper layer 6, for example an outer fabric, a Matratzendrell or the like and is deducted from a storage roll 5 and below a pedestal for the operator around pulleys 8, 9, 10, 11 and 12 in the sewing area, ie in the area between the presser foot 3 and the throat plate 13 and the Nähgutauflage out.
  • This layer 6 of the material is made of inelastic material.
  • this elastic layer 15 again guide or deflection rollers 16, 17, 18 and 19 are provided.
  • the layer 15 of elastic material is sewn in the sewing unit with the upper layer of inelastic material and another layer 21 and withdrawn as finished sewn sewing material 28 in the direction of arrow 29 from the sewing unit, wherein the supply of the layers 6, 15 and 21 through the is provided to the finished sewing good 28 acting force.
  • the finished fabric 28 passes through the sewing unit a distance with deflection or guide rollers 25, 26 and 27, which u.a. provide a tightening of the sewing material 28 in the exit region of the sewing unit.
  • the deflection roller 12 opposite a support 30 is arranged, wherein the distance to the outer periphery of the guide roller 12 and the support 30 is adjustable, ie that either the guide roller 12 is movable relative to the support 30 or that the support 30 is movable relative to the guide roller 12. Alternatively, it can be provided that both the support 30 and the deflection roller 12 are adjustable in the vertical direction.
  • This embodiment serves to adapt the multi-needle chain stitch sewing machine to layers 6 and 15 of different thicknesses, wherein the layer 15 of elastic material is substantially stronger than the layer 6 of inelastic material. It is necessary that the pulley 12th with a certain pressure on the layer 6, 15 acts to provide the required frictional forces.
  • FIG. 2 it can be seen that the presser foot 3 and the throat plate 13 or sewing material support are not movable in the longitudinal direction of the machine frame 1.
  • the support 30 is arranged relative to the presser foot 3 and the needle plate 13 in the longitudinal direction of the machine frame 1 movable; so that the sewing material, of which only the upper layer 6 of inelastic material is shown in FIG. 2, is movable relative to the needle rows 2 in such a way that any sewing patterns can be transferred to the sewing material.
  • a sewing pattern 32 to be applied for example, is shown on the layer 6.
  • an electric motor 35 is provided in the machine frame 1, which has a pinion 37 on its drive shaft 36, which pinion meshes with a toothing 38 of a rack 38 which is fixedly connected to the support 30.
  • the needles 31 are arranged in two parallel to each other and in the sewing direction one after the other needle rows 2.
  • Each needle 31 is associated with a gripper of a gripper row 4.
  • the gripper row 4 is in this case formed by a gripper shaft 33, which is moved in an oscillating manner by means of an eccentrically designed drive, not shown. This oscillating movement is transferred to the gripper shaft 33 attached to the gripper, which bring in conjunction with the oscillating up and down moving needles 31 double chain stitches in the fabric 28.
  • each needle 31 brings a thread, not shown, to the lowest point of their path, which is below the material 28 between the presser foot 3 and the needle plate 13 in a range that the there arranged, the needle 31 associated with a gripper in the upward movement of the needle 31 can take there left thread loop. While the needle 31 is moved back from its lowest position to its highest position, the gripper moves in the direction of the thread grinder and carries a looper thread in the thread loop of the needle thread.
  • the fabric 28 is transported in the direction of the arrow 29 before the needle 31 is again moved from its highest position to its lowest position.
  • the gripper pivots back to its original position, wherein the thread loop of the needle thread and the looper thread forms a thread triangle into which the needle 31 pierces.
  • a double-chain stitch consisting of a needle thread which rests on the upper side of the sewing material and penetrates the sewing material and forms a looper thread resting on the underside of the sewing material.
  • the individual needles 31 of a row of needles 2 are interchangeably attached to a needle bar 34, so that the needle bar 34 can be equipped with needles 31 corresponding to the desired sewing pattern 32.
  • Each adjustable between two positions needle 31 has its own drive 39, which consists of a linear motor 40, which linear motor 40 has a pneumatically driven and spring-loaded piston 41, at the free end of the needle 31 is inserted into an axially aligned bore.
  • the piston 41 has a not shown, between the aligned on the needle 31 lower end of the drive 39 and a piston disc spring arranged, which holds the piston in its initial position in a position in which the needle 31 does not participate in the sewing process. If the piston 41 over a power line 42 pressurized with compressed air, it moves against the spring force of the spring not shown in the direction of the sewing material 28 so that it holds the needles in their first position in this position in which they participate in the sewing process. If the compressed air supply to the piston 41 is interrupted, the spring, not shown, pushes the piston 41 back into the starting position described above.
  • the linear motors 40 are screwed to the needle bar 34 via L-shaped angle plates 43.
  • Figure 3 shows three adjustable in their positions needles 31 and a fixed needle 31, which consequently participates constantly in the sewing process.
  • the fixed needles 31 is releasably attached to the needle bar 34 via a needle holder 44.
  • the attachment of the needle holder 44 and the angle plates 43 by means of screws, which are easily solvable.
  • the multi-needle chain stitch sewing machine has a cutting device which is designed as a cutting blade 45, wherein each gripper has such a cutting blade 45.
  • the gripper shaft 33 carries out a supplementary movement, which is introduced via an eccentric drive. During this movement, the cutting blade 45 is brought into contact with the needle thread, so that the needle thread is cut over it. It can also be provided that the cutting of the needle thread takes place via an additional transport movement of the sewing material 28, so that the tensioned needle thread is drawn into the region of the cutting blade 45 and cut there.
  • a method for forming complicated sewing patterns in a cloth can be easily performed.
  • additional seams can be introduced via the adjustable needles 31 during the sewing process, without the need for retrofitting the multi-needle chain stitch sewing machine to require additional needles 31 on the sewing bar 34 must be attached.
  • After completion of a double chain stitch can be cut by means of the cutting blade 45 in the region of adjustable between two positions needles 31 of the needle thread in a length that an automatic opening of the thread chain is avoided.
  • a knotting device may be provided which knots the needle thread with the hook thread against automatic opening during the last pass.
  • the fabric is moved in a first step after the last stitch formation of a sewing pattern element in the direction of arrow 29 to subtract additional needle thread length of a coil, not shown. Subsequently, the needle thread is cut by means of the cutting blade 45 in the required length.
  • the needles 31 are movable, ie can be raised, between a lower position facing the material to be sewn and an upper position remote from the material to be sewn.
  • the invention is not limited to such an embodiment. Rather, other embodiments are possible, with which at least one, preferably a plurality of needles between two positions is adjustable or are, the needles in a first position participates in the sewing or take and in a second position during the sewing process not in the Cut in or sew in sewing material.
  • the needles 31 may be pivotally mounted about a pivot point on the needle bar 34.
  • a linear motor engages an end of the needle 31, with which the needle 31 is adjusted to a pivoted position about a pivot point relative to the needle bar from a substantially vertical orientation in which the needle 31 participates in the sewing operation the needle 31 does not participate in the sewing process.
  • This pivoted position is assumed, for example, by pivoting the layer by 30 ° degrees from the vertical in the direction of the horizontal alignment of the needle relative to the needle bar.
  • larger swivel angle are conceivable, as far as it is ensured that in the pivoted position, the needle 31 does not pierce into the fabric.
  • a rotation of the needle 31 may be provided relative to the sewing bar 34.
  • an axis of rotation, on which the needle 31 is articulated runs parallel to the surface normal of the needle bar 34, whereas in the first described alternative of the pivotable needles 31, the axis of rotation extends in the longitudinal direction of the needle bar 34.

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

Claims (18)

  1. Machine à coudre multi-aiguilles à point de chaînette avec des éléments de couture formant des points, qui comprennent au moins une barre d'aiguilles et des aiguilles fixées à celle-ci ainsi qu'au moins un axe porte-crochets auquel sont fixés des crochets, les aiguilles et les crochets formant ensemble des paires d'éléments de couture et étant entraînés de telle manière qu'ils forment avec un fil d'aiguille et un fil de dessous des points de chaînette, en particulier des points de chaînette double, dans une étoffe à coudre posée sur une plaque d'appui, de préférence en plusieurs couches, caractérisée en ce qu'au moins une et de préférence une pluralité d'aiguilles (31) sont réglables entre deux positions, la ou les aiguilles (31) participant à l'opération de couture dans une première position et ne piquant pas dans l'étoffe (28) pendant l'opération de couture dans une deuxième position, et en ce que la ou les aiguilles (31) mobiles entre les deux positions sont associées à un dispositif pour le nouage du fil d'aiguille avec le fil de dessous et/ou à un dispositif de coupe pour du fil de dessous et/ou du fil d'aiguille.
  2. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que les aiguilles (31) mobiles entre deux positions sont disposées sur le bord et/ou dans la zone médiane de la barre d'aiguilles (34).
  3. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que les aiguilles (31) mobiles entre deux positions sont disposées en alternance avec des aiguilles (31) non mobiles sur la barre d'aiguilles (34).
  4. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que les aiguilles (31) mobiles entre deux positions peuvent être déplacées par un entraînement (39).
  5. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 4, caractérisée en ce que l'entraînement (39) des aiguilles (31) mobiles entre deux positions comprend une pompe pour un fluide sous pression non compressible, en particulier un fluide hydraulique ou pneumatique, et au moins un moteur linéaire (40).
  6. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 5, caractérisée en ce que chaque aiguille (31) mobile entre deux positions possède un moteur linéaire (40).
  7. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 4, caractérisée en ce que l'entraînement (39) est conformé comme un entraînement électromécanique, en particulier composé d'une crémaillère et d'un pignon entraîné par un moteur électrique qui engrène avec la crémaillère.
  8. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que le dispositif de coupe est conformé comme une lame de couteau.
  9. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que le dispositif de coupe est disposé sur le crochet ou sur un élément écarteur associé à la paire d'organes de couture.
  10. Machine à coudre multi-aiguilles à point de chaînette selon la revendication 1, caractérisée en ce que la plaque d'appui (13) présente un mécanisme de transport de l'étoffe qui sert à transporter l'étoffe (28) dans au moins deux directions opposées.
  11. Procédé pour la formation d'un motif de couture dans une étoffe, en particulier en plusieurs couches, dans lequel une pluralité d'organes de couture, à savoir au moins une aiguille et au moins un crochet, relient au moins un fil d'aiguille et un fil de dessous pour former un point de chaînette, et en particulier un point de chaînette double, caractérisé en ce que lorsqu'un point est terminé, de préférence lorsqu'un élément de motif de couture est terminé, une aiguille au moins est déplacée d'une première position participant à l'opération de couture, et en particulier à la formation des points, à une deuxième position dans laquelle l'aiguille ne participe pas au point suivant, de préférence à un élément de motif de couture suivant, le fil d'aiguille étant relié au fil de dessous de façon à empêcher que le dernier point avant le déplacement de l'aiguille de la première position à la deuxième s'ouvre de lui-même.
  12. Procédé selon la revendication 11, caractérisé en ce que le fil d'aiguille est noué avec le fil de dessous au moins avant le début de l'élément de motif de couture suivant.
  13. Procédé selon la revendication 11, caractérisé en ce que le fil d'aiguille et/ou de dessous sont coupés au moins avant le début de l'élément de motif de couture suivant.
  14. Procédé selon la revendication 11, caractérisé en ce que l'étoffe est déplacée, de préférence avant le début de l'élément de motif de couture suivant, dans le sens de couture, afin de tirer le fil d'aiguille en l'allongeant depuis une réserve de fil avant que le fil d'aiguille soit noué avec le fil de dessous et/ou coupé.
  15. Procédé selon la revendication 11, caractérisé en ce que plusieurs aiguilles disposées sur au moins une barre d'aiguille sont amenées en même temps de la première position à la deuxième.
  16. Procédé selon la revendication 11, caractérisé en ce que la ou les aiguilles sont déplacées par des moyens hydrauliques, pneumatiques ou électromécaniques.
  17. Procédé selon la revendication 11, caractérisé en ce que la ou les aiguilles sont commandées par une commande programmable.
  18. Procédé selon la revendication 17, caractérisé en ce que la commande programmable est exécutée de façon analogue à un ou plusieurs motifs de couture.
EP02003310A 2001-02-14 2002-02-13 Machine à coudre multi-aiguille et méthode pour produire un motif de couture dans un ouvrage de couture Expired - Lifetime EP1233096B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE10107101 2001-02-14
DE10107101 2001-02-14
DE10113955 2001-03-22
DE10113955 2001-03-22
DE10125108 2001-05-23
DE10125108A DE10125108B4 (de) 2001-02-14 2001-05-23 Vielnadelkettenstichnähmaschine und Verfahren zur Ausbildung eines Nähmusters in einem Nähgut

Publications (3)

Publication Number Publication Date
EP1233096A2 EP1233096A2 (fr) 2002-08-21
EP1233096A3 EP1233096A3 (fr) 2003-07-02
EP1233096B1 true EP1233096B1 (fr) 2006-06-21

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EP02003310A Expired - Lifetime EP1233096B1 (fr) 2001-02-14 2002-02-13 Machine à coudre multi-aiguille et méthode pour produire un motif de couture dans un ouvrage de couture

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Publication number Priority date Publication date Assignee Title
EP2192221A1 (fr) 2008-11-26 2010-06-02 Nähmaschinenfabrik Emil Stutznäcker GmbH & Co. KG Machine à coudre à plusieurs aiguilles

Also Published As

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EP1233096A3 (fr) 2003-07-02
US6895878B2 (en) 2005-05-24
US20040000261A1 (en) 2004-01-01
DE50207239D1 (de) 2006-08-03
EP1233096A2 (fr) 2002-08-21

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