EP2948581B1 - Machine à broder avec au moins une navette rotative pour point noué deux fils - Google Patents

Machine à broder avec au moins une navette rotative pour point noué deux fils Download PDF

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Publication number
EP2948581B1
EP2948581B1 EP14707642.6A EP14707642A EP2948581B1 EP 2948581 B1 EP2948581 B1 EP 2948581B1 EP 14707642 A EP14707642 A EP 14707642A EP 2948581 B1 EP2948581 B1 EP 2948581B1
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EP
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Prior art keywords
embroidery
thread
stitch
needle
upper thread
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EP14707642.6A
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German (de)
English (en)
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EP2948581A1 (fr
Inventor
Gottfried Schmidt
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Zoje Europe GmbH
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Zoje Europe GmbH
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
    • D05C11/08—Thread-tensioning arrangements

Definitions

  • the invention relates to an embroidery machine with at least one embroidery head, which is provided with stitch-forming tools for stitch-forming an embroidered seam, the stitch-forming tools having a needle provided for guiding an upper thread and a rotating gripper that interacts with the needle to form embroidered seams, the gripper having a receptacle for Arrangement of a lower thread supply is provided and preferably more than twice around its axis of rotation during a stitch formation cycle, and movement means for performing relative feed movements between the needle and an embroidery material is provided.
  • double lockstitch grippers are used in the majority of cases, as are also used in principle with sewing machines.
  • such a lockstitch gripper performs two full revolutions per stitch formation period.
  • the lockstitch gripper perform more than two full revolutions during a stitch formation period.
  • Such a stitch formation period which can also be referred to as a stitch formation cycle, is characterized in that the main machine shaft driving the needle bar and needle completes a full 360° revolution.
  • sewn seam is essentially a connecting or fastening seam, with which two or more parts are usually firmly connected
  • the embroidered seam is an ornament (ornamental seam) applied to the embroidery base, which does not have to transmit any forces and is visible in the finished state is not charged.
  • the strength of the fastening seam is achieved by the fact that the thread loop that has fallen off the hook is pulled by the thread lever with relatively great force in the direction of the upper side of the sewing material, so that the looping of the needle and looper thread comes to rest in the middle between the layers of fabric to be sewn.
  • the thread force of the looper thread is dimensioned accordingly.
  • Satin stitches which have a zigzag seam, are mainly used to create surface patterns.
  • the seam created with satin stitches typically shows a change in direction of the orientation of the upper thread after each stitch.
  • the lower thread extends on the underside of the embroidery base from one needle puncture to the next needle puncture in the embroidery base.
  • the lower thread thus runs from a thread that is arranged directly below a puncture Upper thread loop to the next upper thread loop, which is also arranged immediately below where the needle punctures the embroidery base.
  • the lower thread is wound onto bobbins in such embroidery machines, which are usually inserted into the hook so that the hook tip rotates around the bobbin.
  • the thread on these bobbins is quickly used up and therefore has to be changed frequently. This change must be made much more frequently than with the upper thread guided by the needle, since there is no gripper that restricts the size of the bobbin in bobbins for the upper thread.
  • Upper thread spools are therefore usually significantly larger than lower thread spools. Frequent changing of the bobbin, especially the bobbin of the lower thread, means unproductive standstill of the embroidery machine for the duration of the change and should therefore be avoided as far as possible.
  • the EP 0 756 031 A2 proposes making the previously movable first thread guide immovable and allowing the second thread guide to perform a movement that corresponds to the earlier movements of the two thread guides that were previously movable. By tightening the lower thread or the With this type of embroidery machine, a parallel offset of the upper and lower threads of each stitch can also be achieved with the upper thread.
  • the invention is therefore based on the object of specifying a measure by which the change intervals for the lower thread bobbin can be extended in embroidery machines of the type mentioned.
  • the invention overcomes the view that has long prevailed in connection with rapier embroidery machines that only their kinematics determine the amount of lower thread, particularly in the case of satin stitches.
  • the invention provides that at least one parameter of the embroidery process that can be influenced by the embroidery machine is changed during the execution of the embroidery process - in particular during each stitch formation cycle - on the basis of at least one control process of the embroidery machine. This change should be made in a predetermined manner that is performed by the machine itself, for example based on a setting previously made on the embroidery machine or due to appropriate programming.
  • the setting is controlled or regulated on the basis of and as a function of a detection result, determined by the machine, of an ACTUAL value of the at least one parameter.
  • the parameter of the embroidery process that is deliberately varied during a stitch formation cycle can advantageously be a thread tension or another influencing factor of the embroidery process that influences the thread tension.
  • the lower thread length assigned to a specific stitch length can already be shortened simply by deliberately varying the size of instantaneous values of a parameter of the embroidery process in terms of time and amount.
  • the respective parameter By setting different values for the respective parameter when it varies during a stitch formation period, it is possible to achieve different lengths of the lower thread section assigned to a stitch length in a targeted manner.
  • the at least one parameter is always varied in an identical manner when a seam is formed. In principle, however, it is also possible for different stitches of the seam to be used To change the at least one parameter in different ways and in particular to forego a variation for certain stitches.
  • the means according to the invention thus act in such a way that, at the latest after the completion of the respective stitch formation, the upper thread loop receiving the lower thread is arranged on the underside of the embroidery base at a distance from the passage point of the upper thread through the embroidery material assigned to the respective upper thread loop.
  • the upper thread with its loop should no longer be arranged directly below the respective puncture point of the needle in the embroidery material. Rather, it is provided that the upper thread loop is arranged between two successive puncture points at the latest after the stitch or seam has been formed. As a result, the length of lower thread required for seam formation can be significantly reduced for each seam.
  • the lower thread no longer runs from puncture point to puncture point, but from an upper thread loop drawn in between two puncture points under the embroidery base to the next upper thread loop in stitch sequence, which is also drawn in in basically the same way under the embroidery base between two puncture points.
  • the lower thread thus takes a path between two consecutive puncture points in the puncture sequence of the needle in the embroidery base that is shorter than the distance between the two consecutive puncture points (stitch length) in order to still be guided through the upper thread loop assigned to each puncture point.
  • the measures according to the invention also mean that the respective lower thread section of the satin stitch embroidery seam, which runs between two upper thread loops that follow one another directly in the stitch sequence on the underside of the embroidery material, is not congruent with the corresponding upper thread section on the upper side of the embroidery material.
  • the invention can also lead to advantages for reasons other than reducing the lower thread consumption, even with straight seams and also with loopers that only rotate twice per stitch formation cycle.
  • the measure provided according to the invention leads to a reduction in the amount of lower thread required for satin stitches.
  • it requires an increased amount of upper thread.
  • the latter is of secondary importance due to the significantly larger and practically any size spool for the upper thread in relation to the length of the required change intervals for thread spools.
  • Conventional upper thread spools allow a significantly larger amount of upper thread to be stored on the embroidery machine than is possible with lower thread spools.
  • the invention can also be used to advantage for other types of stitches, especially when the upper thread sections of consecutive stitches or the associated puncture points do not lie on a straight line but enclose an angle deviating from 180°.
  • the lower thread portion assigned to this stitch length is at most 80% of the stitch length, preferably at most 70%, also preferably at most 60 % and more preferably half the stitch length or less.
  • the means for reducing the thread tension have an upper thread brake, the braking effect of which on the upper thread can be reduced or completely canceled by the control of the embroidery machine at a predetermined, in particular at a variably predeterminable, time of seam formation.
  • an actual absolute reduction in the upper thread tension it is also conceivable in principle to reduce the ratio of the upper thread tension to the lower thread tension, for example by increasing the lower thread tension while the upper thread tension remains unchanged.
  • the thread tension is reduced or removed after a point in time after the thread feed of the needle thread has a value of zero or almost zero.
  • the latter is the case when the pivoting movement of the thread lever for the upper thread, which is preferably provided in embroidery machines of the generic type, has reached its top dead center.
  • the upper thread tension should advantageously be reduced in particular between points in time of the respective stitch formation period at which the upper thread feed has a minimum value and before the embroidery base stops moving again after the movement has taken place.
  • the upper thread tension should preferably be increased again at a point in time when or after the needle has reached its greatest penetration depth during its subsequent penetration into the embroidery material, i.e. at point in time A in the machine diagram 3 .
  • the front part 1 of a conventional embroidery head is shown in a sectional view, as in relation to its structural design in connection with the Invention can be applied.
  • the front part has a lockstitch gripper 2, a table top 3 and a needle plate 4.
  • the lockstitch gripper 2 is of conventional design and has a bobbin case carrier 6 for receiving a bobbin case 7 . In the bobbin case 7, the coil receiving the gripper supply is rotatably mounted.
  • the double lockstitch gripper 2 is provided in the embroidery machine with an axis of rotation aligned parallel to the table top 3 or to the embroidery base.
  • the double lockstitch gripper 2 is assigned a needle bar 9 which carries a needle 8 and which interacts with the double lockstitch gripper 2 .
  • the lockstitch gripper 2 and each needle 8 are components of stitch forming tools, each needle leading an embroidery thread, referred to below as the upper thread.
  • the needle bars 9 are accommodated in a base frame 10 so that they can move vertically and are each driven in a manner known per se by a driver 11 which transmits the drive movement of the needle drive to the respective needle bar 9 .
  • a hold-down device 12 for each embroidery thread which is arranged to be displaceable on the needle bar 9 and is driven by a driver 13 .
  • a thread lever 14 which is driven in a known manner and is pivotably mounted on an axis 15 which in turn is accommodated in the base frame 10 is arranged for each embroidery thread.
  • the embroidery head has a thread brake 16, known per se and adjustable in terms of its braking effect, which is fixedly attached to the front part 1.
  • the rear part of the embroidery head is firmly connected to the machine frame and carries the drives for the needle bar 9, the hold-down device 12 and the thread lever 14.
  • the rear part of the embroidery head is also connected to the front part 1 via a straight guide, not shown in detail. so that this can be moved within a horizontal plane in the direction of alignment of the existing needle bars 9 above the lockstitch gripper 2, each a needle bar 9, a hold-down device 12 and a thread lever 14 are connected to the respective drive.
  • the aforementioned parts are driven by a main machine shaft (not shown) which performs a full, ie a 360° rotary movement per stitch formation period.
  • a main machine shaft not shown
  • the aforementioned elements and parts could also be provided with separate drives that are electronically synchronized with one another.
  • Such a coordinated, predetermined or predeterminable synchronization of the movements can be carried out in particular by the machine control.
  • the lockstitch gripper rotates at twice the speed, i.e.
  • n 2
  • any other conceivable solution for a fixed or variable synchronization between the machine main shaft and the at least one lockstitch gripper 2 can be provided.
  • This entanglement is caused by the process of grasping the upper thread 25 by the rotating gripper 2 and inserting the lower thread 24 into the upper thread loop 26 widened by the gripper 2 and which is the basis of the double lockstitch principle. While the needle 8 moves out of the puncture hole 20, the thread lever 14 takes the upper thread with it during its pivoting movement, thereby reducing the upper thread loop 26 and laying it against the underside of the embroidery base 23.
  • the lower thread 24, which was thereby placed on the underside of the embroidery base 23, runs from the puncture hole 20 to the puncture hole 21 created immediately beforehand.
  • the lower thread is also pulled through the upper thread loop 27 assigned to this puncture point, with the upper thread loop 27 is also arranged directly below the puncture hole 21.
  • the length of the lower thread section between the two puncture points 20, 21 offset from one another in the longitudinal direction of the zigzag seam thus corresponds at least approximately to the distance between the two puncture points 20, 21 from one another or to the stitch length S
  • the upper and lower threads 24, 25 run on the underside of the embroidery base in principle in the same way.
  • the upper thread 25 runs approximately parallel to the lower thread 24, with approximately the same length as the lower thread 24 and also from each puncture point to the next in the stitch sequence puncture site.
  • the loop 26 moves further and further away from the needle plate bore 29 with the movement of the embroidery base 23. Between the small loop 26 and the upper edge of the needle plate bore 29, an additional thread requirement arises in the lower thread 24, the one in which the lower thread 24 over the upper edge the needle plate bore 29 slides, is compensated against the resistance of the lower thread brake from the supply of the hook spool 7.
  • FIG 5 is the time point D in the diagram 3 illustrated.
  • the relative movement between the stick base 23 and the throat plate bore 29 has come to an end.
  • the new puncture position of the needle 8 above the embroidery base 23 has been reached.
  • the length of the part of the lower thread 24 that now lies between the upper edge of the throat plate bore 29 and the small loop 26 above the throat plate 4 practically corresponds to the distance that the embroidery base 23 has covered with its movement, i.e. the stitch length or the Lower thread consumption of the stitch.
  • the needle 8 and the fabric hold-down device 12 were progressively lowered vertically over the embroidery base 4.
  • the upper thread 25 comes between its anchoring point, on the top of the embroidery base 23 and the opening 18 in the fabric hold-down device 12, increasingly in an inclined position, which requires a slowly but steadily increasing thread requirement in the upper thread 5.
  • This need is taken into account with the thread application, which begins slowly before time D, as can be seen from the diagram in FIG 3 emerges.
  • the small loop 26 remains unchanged, as does its importance for the lengthening of the lower thread 24 during the complete movement phase of the embroidery base 23.
  • the thread feed is a function of the pivoting position of the thread lever 14 about its pivot axis 15, in which the course of the upper thread 25 on its way from the thread brake 16 ( 1 ) to the embroidery base 23, depending on the pivoting position of the thread lever 14, is caused to detours of different lengths. In its uppermost pivoting position, this detour is greatest and the yarn feed is zero.
  • the maximum thread feed occurs when the thread lever 14 is in the lowest pivoting position, with the slightest detour in the upper thread 25.
  • the thread feed works in relation to the upper thread 25 in the same way as a buffer memory, from which the drive kinematics of the thread lever 14 for the needs of the stitch formation organs, i.e.
  • the lower thread length per stitch necessarily corresponds to the length of the stitch. This can be very useful, for example if the view of the lower thread is to be covered by the upper thread when the embroidery base is translucent. However, this is not the norm, which is why the high lower thread consumption is seen as a disadvantage in most applications.
  • the solution according to the invention is based on the previous knowledge that in gripper embroidery machines only their kinematics determines the amount of lower thread in satin or zigzag stitches and not the ratio between upper and lower thread tension, as will be described below.
  • the effect is that from time C in 3 the thread brake 16 of the upper thread 25 is open.
  • an electric actuator (not shown in detail), which acts on the thread brake and releases it.
  • any previously known actuator is suitable as an actuator with which the embroidery machine is able to rotate according to the usual speeds of embroidery machines Machine shaft to open the thread brake 16 and then to close it again.
  • Such an actuator can be a lifting magnet, a piezo element or a pneumatic element, for example, in a non-exhaustive list.
  • FIG 8 shows how figure 5 the situation at time D in the machine diagram 3 .
  • the movement of the embroidery base 23 has ended.
  • the formerly small upper thread loop 26 is enlarged to the now again larger upper thread loop 26a by the upper thread 25 being pulled onto the underside of the embroidery base 23 by the lower thread 24, which is still being braked.
  • the piece of thread or thread section 24a of the lower thread 24 is significantly smaller than the stitch length S and represents the lower thread consumption between the last two stitches.
  • the course of the upper thread 24 and the lower thread 24 on the embroidery material, separated by the embroidery backing 23 is no longer congruent , in contrast to the situation after 2 .
  • the lower thread length can be specifically influenced via the machine control. This influence can mainly be caused by variation of the in 3 be carried out at a specific point in time at the point in time C entered, for example. Depending on what point in time C is between points B and D in 3 the upper thread brake has been opened, the length of the upper thread pulled to the underside and thus the lower thread length required per stitch can be varied. If the opening happens earlier, the proportion of lower thread is lower and vice versa. Since the thread feed can assume the value zero or almost zero not only at a single point in time but during a time interval of the stitch formation period, point in time B can also be selected as a possible point in time from this interval.
  • the type of embroidery to be produced can now decide whether, for example, with a translucent embroidery base 23, the upper and lower threads should run congruently to one another - high lower thread consumption - or, if this is not necessary, what predetermined fraction of the stitch length the corresponding lower thread consumption has - low lower thread consumption .
  • This option is not available on looper embroidery machines with a double rotating looper.
  • the overall sequence of stitch formation requires that the upper thread brake 16 is closed again. This is advantageously done at time A, ie at a time when the needle point has just passed through its lowest point and begins to move back towards the underside of the embroidery base and then out of the puncture point. In the preferred exemplary embodiment, this point in time A is thus in the subsequent stitch formation period, which follows the stitch formation period in which the thread brake was opened.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (14)

  1. Machine à broder avec au moins une tête de broderie, qui est pourvue d'outils de formation de points pour la formation d'un point de broderie, les outils de formation de points comprenant une aiguille (8) prévue pour le guidage d'un fil supérieur (25) ainsi qu'une griffe (2) coopérant avec l'aiguille (8) pour la formation de points de broderie.
    la griffe (2) est munie d'un logement pour disposer une réserve de fil de canette (24) et tourne plus de deux fois autour de son axe de rotation pendant un cycle de formation de points, ainsi que de moyens de déplacement pour effectuer des mouvements relatifs d'avance entre l'aiguille (8) et un article à broder. caractérisé par des moyens de la machine à broder pour la variation réglable d'au moins un paramètre du processus de formation de l'image de point, grâce auxquels on obtient des valeurs différentes du paramètre au moins pendant une période de formation de l'image de point, de préférence respectivement pendant une pluralité de périodes de formation de l'image de point, de la couture de broderie, afin d'obtenir, en ce qui concerne la position et la longueur du fil inférieur (24) et du fil supérieur (25), des valeurs différentes du paramètre. d'un point de la couture de broderie sur le côté supérieur et le côté inférieur de l'article à broder, une disposition non coïncidente du fil supérieur (25) et du fil inférieur (24) sur l'article à broder, ce qui fait qu'une longueur de point (S) prévue entre deux points de piqûre successifs (20, 21) de l'aiguille (8) pour former une couture de broderie et une longueur de fil inférieur associée à cette longueur de point (S)
    est au maximum de 80% de la longueur du point, de préférence au maximum de 65% et de manière particulièrement préférée inférieure ou
    égale à la moitié de la longueur du point (S).
  2. Machine à broder selon la revendication 1, caractérisée en ce que les moyens pour la variation réglable d'au moins un paramètre de l'opération de formation de points comprennent des moyens pour le réglage variable d'un rapport entre le fil supérieur et le fil inférieur.
    et la tension du fil de canette au moins pendant un moment de la période de formation du point.
  3. Machine à broder selon au moins l'une des revendications précédentes, caractérisée par des moyens de réduction de la tension du fil supérieur, comprenant un frein de fil (16) du fil supérieur (25), réglable de telle sorte que, pour chacune d'une pluralité de périodes d'image de point de la couture de broderie, la tension du fil supérieur est réduite à un minimum.
    la tension du fil supérieur peut être temporairement réduite par rapport à la tension du fil inférieur.
  4. Machine à broder selon au moins l'une des revendications précédentes, caractérisée en ce que, pendant au moins l'une, de préférence chacune, d'une pluralité de périodes d'image de point, de préférence chacune avec une de l'aiguille (8) dans la plaque à aiguille (4), de la couture de broderie, il est possible de procéder à la fois à une réduction et à une augmentation dudit au moins un paramètre.
  5. Machine à broder selon au moins l'une des revendications précédentes, caractérisé par des moyens pour réduire une tension de fil du fil supérieur de la machine à broder, au moins par rapport à une tension de fil du fil inférieur, à un moment prédéterminable ou prédéfini du cycle de formation de points.
  6. Machine à broder selon la revendication 5, caractérisée en ce que les moyens pour réduire la tension du fil comprennent un frein de fil (16) pouvant être commandé,
    dont l'effet de freinage peut être commandé par la commande de la machine pendant un cycle de formation de points.
  7. Machine à broder selon la revendication 5 ou 6, caractérisée en ce qu'un moment d'une opération de commutation pouvant être effectuée par la commande de la machine pour réduire la tension du fil, et de préférence également une durée,
    pendant laquelle la tension du fil est réduite.
  8. Machine à broder selon l'une quelconque des revendications précédentes 5 à 7, caractérisée en ce que, dans un cycle de formation de points, la commande de la machine réduit la tension du fil supérieur (25) après que le débit de fil a atteint sa valeur maximale et pendant ou après que le débit de fil a atteint une valeur qui se rapproche de la valeur maximale.
    le cycle de formation de points commençant de préférence par une piqûre de l'aiguille (8) dans la plaque à aiguille (4).
  9. Machine à broder selon l'une des revendications précédentes 5 à 8,
    caractérisée en ce que la réduction de la tension du fil entre (8) a passé son point bas inférieur.
  10. Machine à broder selon l'une des revendications précédentes, caractérisée en ce que
    caractérisé en ce que la réduction de la tension du fil supérieur a lieu à un moment où un cadre de broderie (5) prévu pour recevoir un fond de broderie (23) se déplace par rapport à l'aiguille (8).
  11. Procédé de broderie pour la formation de coutures à broder, en particulier de coutures à broder à point plat, avec une machine à broder à point noué, dans laquelle, au moyen d'une machine à broder à point noué se déplaçant dans le sens de la longueur, des coutures à broder sont formées.
    (8) effectuant un mouvement oscillant de va-et-vient et guidant un fil supérieur (25) dans l'ouvrage à broder, qui peut être déplacé en zigzag au moins dans un plan par rapport à l'aiguille (8) à l'aide de moyens de déplacement, une boucle de fil supérieur (26, 26a, 27) est formée dans l'ouvrage à broder par pénétration de l'aiguille (8) dans l'ouvrage à broder en dessous du point de piqûre (20, 21) et cette boucle de fil supérieur est introduite dans l'ouvrage à broder à l'aide d'un dispositif de guidage de l'aiguille (8) utilisé pendant le processus de broderie.
    (2) tournant au moins deux fois et un fil de canette (24) stocké dans la griffe (2) est guidé à travers la boucle (26, 26a, 27), caractérisé en ce qu'au moins pendant l'une, de préférence pendant chacune d'une pluralité de périodes d'image de point de la couture de broderie, des valeurs différentes d'un signal de commande de la machine à broder à points noués sont saisies.
    du processus de formation de l'image de point, afin de produire, par rapport à la position et à la longueur du fil inférieur (24) et du fil supérieur (25) d'un point de la couture de broderie sur le côté supérieur et le côté inférieur de l'article à broder, une disposition non congruente du fil supérieur (25) et du fil inférieur (24) sur l'article à broder, ce qui permet d'obtenir une image de point de la couture de broderie entre deux points de piqûre successifs.
    (20, 21) de l'aiguille (8) pour former une couture de broderie et une longueur de fil de canette associée à cette longueur de point (S), au maximum 80%.
    de la longueur du point, de préférence au maximum 65% et de manière particulièrement préférée inférieure ou égale à la moitié de la longueur du point (S).
  12. Procédé de broderie selon la revendication 11, caractérisé en ce que ledit au moins un paramètre est déterminé, après la détection de la boucle de fil supérieur (26, 26a, 27), par
    la griffe (2) et après un bouclage de la boucle de fil supérieur (26, 26a, 27) avec le fil inférieur (24) est modifié.
  13. Procédé de broderie selon la revendication 11 ou 12, caractérisé en ce que, après la saisie de la boucle de fil supérieur (26, 26a, 27) par la griffe (2) et un entrelacement de la boucle de fil supérieur (26, 26a, 27) avec le fil de canette (24), la tension du fil supérieur (25) est réduite.
  14. Produit à broder, dans lequel des coutures à broder sont formées à partir d'un fil supérieur (25) et d'un fil inférieur (24) en utilisant le procédé de broderie selon la revendication 12, caractérisé par la couture à broder avec une boucle de fil supérieur (26, 26a, 27) de la couture à broder, disposée en dessous du produit à broder, à travers laquelle le fil supérieur (25) est passé. fil inférieur (24) et qui est disposé entre deux points de piqûre successifs de l'aiguille (8) dans l'article à broder, une disposition non coïncidente du fil supérieur (25) et du fil inférieur (24) sur l'article à broder étant produite par rapport à la position et à la longueur du fil inférieur (24) et du fil supérieur (25) d'un point de la couture de broderie sur la face supérieure et la face inférieure de l'article à broder, et
    le fil de canette s'étendant entre deux points de piqûre successifs dans l'ordre de piqûre de l'aiguille dans le fond de broderie, le long d'un trajet qui est plus court que la distance entre les deux points de piqûre successifs.
EP14707642.6A 2013-01-28 2014-01-28 Machine à broder avec au moins une navette rotative pour point noué deux fils Active EP2948581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013001346.1A DE102013001346A1 (de) 2013-01-28 2013-01-28 Stickmaschine mit zumindest einem Doppelsteppstich-Umlaufgreifer
PCT/EP2014/000216 WO2014114468A1 (fr) 2013-01-28 2014-01-28 Machine à broder comprenant au moins une navette rotative pour double point noué

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JPS622998A (ja) * 1985-06-28 1987-01-08 蛇の目ミシン工業株式会社 自動糸調子ミシン
US5010834A (en) * 1987-10-31 1991-04-30 Juki Corporation Clutch type roller feed for a sewing machine needle thread
ATE167904T1 (de) * 1995-07-26 1998-07-15 Laesser Franz Ag Fadenleitvorrichtung für schifflistickmaschine
EP1921193A2 (fr) * 2006-11-10 2008-05-14 BERNINA International AG Dispositif et procédé destinés à la modification de motifs de broderie
JP2009045207A (ja) * 2007-08-20 2009-03-05 Yamato Sewing Mach Co Ltd ミシンの糸調子装置
KR101411786B1 (ko) * 2009-06-16 2014-06-24 엔에스디 가부시끼가이샤 재봉틀의 밑실 장력 제어 장치 및 재봉틀
DE102010013016A1 (de) * 2010-03-24 2011-09-29 Zoje Europe Gmbh Ein- oder Mehrkopfstickmaschine mit Doppelsteppstich- Umlauf-Greifer

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EP2948581A1 (fr) 2015-12-02
WO2014114468A1 (fr) 2014-07-31
DE102013001346A1 (de) 2014-07-31
JP2016504124A (ja) 2016-02-12
JP6533160B2 (ja) 2019-06-19
CN105283596A (zh) 2016-01-27
CN105283596B (zh) 2020-07-28

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