EP1297208A2 - Dispositif pour transporter un article a coudre - Google Patents

Dispositif pour transporter un article a coudre

Info

Publication number
EP1297208A2
EP1297208A2 EP01953159A EP01953159A EP1297208A2 EP 1297208 A2 EP1297208 A2 EP 1297208A2 EP 01953159 A EP01953159 A EP 01953159A EP 01953159 A EP01953159 A EP 01953159A EP 1297208 A2 EP1297208 A2 EP 1297208A2
Authority
EP
European Patent Office
Prior art keywords
speed
sewing
fabric
transport
additional
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.)
Withdrawn
Application number
EP01953159A
Other languages
German (de)
English (en)
Inventor
Sevki Hosagasi
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.)
Quick-Rotan Elektromotoren GmbH
Original Assignee
Quick-Rotan Elektromotoren GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7643474&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1297208(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Quick-Rotan Elektromotoren GmbH filed Critical Quick-Rotan Elektromotoren GmbH
Publication of EP1297208A2 publication Critical patent/EP1297208A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/10—Work-feeding means with rotary circular feed members

Definitions

  • the present invention relates to a device for transporting sewing material provided for a sewing device or sewing machine, comprising at least one fabric pusher device for advancing the sewing material in the fabric thrust direction with a feed speed determined by the machine speed and the stitch length and at least one in shape on the upper fabric layer of the fabric of a pressure medium acting with a pressure force and rotating at a rotational speed, an additional material transport device which is arranged in the material pushing direction behind the material pusher device and can be driven in proportion to the machine speed and the stitch length.
  • the additional material transport device serves to offset the offset between the upper layer of fabric and the lower layer of fabric with the sewing device (hereinafter the term “sewing device” also includes sewing machines, whereby the present invention relates both to sewing devices and to sewing machines) to be processed.
  • sewing device also includes sewing machines, whereby the present invention relates both to sewing devices and to sewing machines
  • the sewing material is held down during the stitch formation and the sewing material transport with a so-called fabric presser device, so that the upper fabric layer and the lower fabric layer between the fabric presser device and the
  • the fabric pusher device is compressed and transported in the fabric pusher direction by means of the fabric pusher device.
  • the fabric pusher device makes an approximately elliptical movement: As the fabric pusher device moves a little further up, the fabric pusher device begins to push the fabric layers in the fabric pusher direction. During this transport phase, the pressure of the presser device drops sharply until a spring force decelerates the upward movement of the presser device, ie away from the pushing device, and presses the presser device back onto the material.
  • the fabric pusher device moves down, i.e. in Direction away from the presser device, so that the pressure of the presser device briefly decreases again.
  • the latter phase has no significant influence on the offset between the upper fabric layer and the lower fabric layer.
  • the additional material transport device attacks the upper fabric layer.
  • a mass transfer would only be carried out with the
  • Mass transport additional device cause a so-called "negative offset", that is, an advance of the upper layer of fabric over the lower layer of fabric.
  • a fabric transport device for a sewing machine is known (cf. DE 29 36 697 C2), in which a pressure mechanism is assigned to the driven fabric transport roller, which serves on the one hand to set a gap between the fabric support surface and the fabric transport roller (roller) so that the The material transport roller cannot come into direct contact with the material support surface and, on the other hand, enables the setting of a pretensioning force with which the material transport roller presses the workpiece against the material support surface; however, this pre-tensioning force remains unchanged during the sewing end.
  • a device for transporting sewing material is known (cf.
  • the additional material transport device is intended to carry out a slightly larger transport amount (feed amount) than the material pusher device so that the sewing material is always kept under tension when feeding in the material feeding direction becomes.
  • this is intended to prevent "slip-through wrinkles", that is to say in other words an offset formation; however, the set ratio between the transport amount of the fabric pusher device and the fabric transport roller of the fabric transport additional device remains constant during a sewing process, regardless of the respective machine speed of the sewing machine.
  • the present invention is based on the object of a generic device for transporting sewing material train that even when changing as a result
  • Main shaft of the sewing device and therefore at variable feed speed) varying offset between the upper layer of fabric and the lower
  • a device for transporting sewing material according to the preamble of the main claim, in which, according to the teaching of the present invention, the pressing force exerted by the auxiliary material transport device on the upper fabric face of the sewing material to be transported can be increased with increasing machine speed and by means of at least one device / or the rotational speed of the
  • Mass transport additional device in addition to the proportional increase with increasing machine speed can be increased still further.
  • Additional material transport device exerts on the upper fabric layer of the material to be transported can be enlarged by means of the at least one device with increasing machine speed. hereby can be taken into account the fact that the offset between the upper fabric layer and the lower fabric layer increases with increasing machine speed, so that the fabric transport additional device must develop an increasingly greater tensile stress in the upper fabric layer.
  • the rotational speed is
  • Additional mass transport device can be increased further in addition to the proportional increase with increasing machine speed. This also takes into account the fact that the offset between the upper layer of fabric and the lower layer of fabric increases with increasing machine speed, so that the auxiliary material transport device also has to develop an increasingly greater tension in the upper layer of fabric.
  • Mass transport additional device and / or the
  • the at least one device is provided, which can be designed, for example, as at least one actuator.
  • the pressing force and / or the Circulation speed can also be adapted to the nature of the material to be transported; and or
  • R is a coefficient of friction, the size of which is determined by the frictional relationships between the auxiliary material transport device and the upper fabric layer; and n is the engine speed; and or
  • the speed of the device is a measure of the rotational speed of the mass transport additional device or is equal to the rotational speed of the mass transport additional device;
  • np k • n ⁇ L
  • k is an adjustment factor
  • n the engine speed
  • L is the stitch length
  • the mass transfer device operates in low speed ranges (n p ⁇ 500 min " 1 ) of the device in an intermittent mode; and / or
  • the on and off times of the facility are determined by the angular position of the main shaft of the sewing device or sewing machine; and or
  • the mass transfer device operates in high speed ranges (n p > 500 min -1 ) of the device in a continuous mode;
  • the transport path of the mass transport additional device per stitch formation process is larger, in particular slightly. larger than the feed path of the material pusher device; and or
  • the pressing force of the mass transfer device and / or the speed of the device are electronically controllable;
  • At least one electronic control device is provided for controlling the pressing force of the mass transport additional device and / or the speed of the device;
  • the engine speed can be determined in the electronic control device.
  • the electronic control device receives the information about the stitch length by input using at least one control panel; and or
  • the electronic control device receives the information about the nature of the material to be transported by input using at least one control panel; and or
  • the device preferably at least one linear motor operated with direct current; and or
  • the linear motor has at least one stator element designed as a housing; and or
  • At least one rotor element designed as a drive rod is mounted in the stator element;
  • stator element is arranged on the rear of the housing head of the sewing device or sewing machine;
  • the device has at least one drive motor, preferably operated with direct current, at least one transmission arranged between the drive motor and the mass transport additional device and at least one transmission element arranged between the transmission and the mass transport additional device for transmitting motion to the mass transport additional device; and or
  • k 2 a measure of the functional Dependence of the offset between the upper layer of fabric and the lower layer of fabric on the machine speed
  • k 3 is a parameter for the nature of the material to be transported
  • the device has at least one carrier element which is connected to the rotor element and to which the drive motor, the transmission and the transmission element are attached; and or
  • the carrier element is mounted against rotation;
  • the carrier element is mounted against rotation by means of at least one guide rod;
  • the carrier element is prestressed by means of at least one resilient, low-mass coupling element;
  • the coupling element is at least one coil spring
  • the mass transport additional device is designed as at least one rotating roller, in particular as at least one rotating take-off roller; and or
  • the device is designed as at least one actuator.
  • the pressing force and / or the speed of rotation can also be adapted to the nature of the material to be transported, preferably by means of the device.
  • This can take into account the fact that the offset between the upper layer of fabric and the lower layer of fabric not only by the machine speed, but also by the nature of the material to be transported and consequently in particular by the frictional relationships between the lower layer of fabric and the upper layer of fabric, and in particular is determined by the frictional relationships between the upper layer of fabric and the presser device.
  • Mass transport additional device is provided.
  • Mass transport additional device can be influenced by a low pressure force in a preferred manner can cause the material transport additional device to slip at an early stage and thus a low tensile stress in the upper fabric layer; In a corresponding manner, a higher pressure force can cause the material transport additional device to slip later and thus a higher tensile stress in the upper fabric layer.
  • the tensile stress during the briefly occurring phases of low presser force causes the upper fabric layer to be slightly advanced over the lower fabric layer, thereby compensating for the otherwise occurring offset.
  • the additional material transport device is of particular importance, because with the force that can be adjusted according to the teaching of the invention, with which the additional material transport device presses against the fabric layers, the stretch in the fabric layers is influenced:
  • Mass transport additional device and the upper fabric layer is determined, and n is the machine speed.
  • the speed of the device can be a measure of the circulating speed of the auxiliary material transport device or - for example with direct translation or with direct Reduction - be equal to the speed of rotation of the mass transfer attachment.
  • the mass transport additional device can expediently be enlarged substantially linearly with the machine speed and / or essentially linearly with the stitch length.
  • the mass transfer device operates in low speed ranges np ⁇ 500 min -1 of the device in an intermittent mode.
  • the on and off times of the device are advantageously determined by the angular position of the main shaft of the sewing device or sewing machine.
  • a switch is made to a continuous drive above speeds n p in the order of magnitude of approximately 500 min ⁇ 1 , that is to say the mass transfer auxiliary device can operate in a continuous mode in high, speed ranges p > 500 min ⁇ 1 of the device ,
  • speed ranges np above about 500 min -1 an intermittent movement due to inertia and the elastic behavior of the drive elements gradually merges into a quasi-continuous movement anyway.
  • the stretching of the fabric layers depends on the friction conditions depends on the additional material transport device and the (nature of) the upper fabric layer.
  • the stretch in the material to be sewn can be influenced by the adjustable force with which the auxiliary material transport device is pressed against the material to be sewn.
  • the transport path of the additional material transport device per stitch formation process is larger, in particular slightly larger, than the feed path of the material pusher device. This technical measure also ensures that the sewing material is always kept under tension when it is fed in the direction of the fabric feed, which, when sewing the upper fabric layer and the lower fabric layer, prevents an offset from being formed.
  • the additional material transport device is designed according to an expedient development of the present invention as at least one rotating roller, in particular as at least one rotating extraction roller.
  • the pressing force of the auxiliary material transport device and / or the speed of the device can be controlled electronically.
  • at least one electronic control device for controlling the pressure force of the Additional material transport device and / or the speed of the device (-> the rotational speed of the additional material transport device) may be provided.
  • the machine speed can be determined in accordance with an expedient embodiment of the present invention in the electronic control device, so that at any time Adaptation of the pressure force of the auxiliary material transport device and / or the speed of the device (-> the rotational speed of the auxiliary material transport device) to the machine speed can take place.
  • the rotational speed of the auxiliary material transport device can be determined not only by the machine speed, but also, among other things, by the stitch length. Since this stitch length is generally set mechanically in a sewing device, the stitch length is generally not known to the electronic control device. Not least for this reason, the electronic control device can expediently obtain the information about the stitch length by input using at least one control panel. The setpoint for the speed of the drive motor of the device and thus its speed can then be determined by at least one computing algorithm in a manner essential to the invention. Furthermore, the pressing force of the auxiliary material transport device can be determined not only by the machine speed, but also, inter alia, by the frictional force acting between the auxiliary material transport device and the upper fabric layer of the material to be sewn.
  • the frictional force in a sewing device generally depends on the nature of the material to be transported, the frictional force is generally not known to the electronic control device. Not least for this reason, the electronic control device can expediently receive the information about the nature of the material to be transported by input using at least one control panel.
  • the setpoint value for the pressure force of the additional material transport device can then be determined by at least one computing algorithm in a manner essential to the invention.
  • the device now advantageously has at least one linear motor, preferably operated with direct current, which practically has at least one stator element designed as a housing, in which at least one rotor element designed as a drive rod is expediently mounted, and / or if the device advantageously has at least one preferably having drive motor operated with direct current, then the pressing force of the mass transfer device and / or the speed of the device (-> the rotational speed of the
  • Mass transport additional device are regulated by at least one (current) controller.
  • the invention makes use of the fact that, in the case of a linear motor, the contact pressure force imparted by the same and / or in the case of a drive motor, the speed or rotational speed conveyed by the same is, in any case essentially, directly proportional to the current supplied to the linear motor or the drive motor. For this reason, the linear motor current or the drive motor current is electronically controlled and consequently the desired pressure of the mass transfer device and / or the desired speed of the device (-> the desired rotational speed of the
  • Mass transport additional device causes.
  • the fabric transport additional device should expediently be designed such that it can be lifted off the upper fabric layer of the sewing material, for example in order to be able to remove the sewing material from the sewing device. This can also be accomplished by means of the linear motor, it being noted that the linear motor does not have to perform a positioning function in this context.
  • the features and the advantages of the linear motor reference is made here in full to the type of motor as described in German patent application DE 199 45 443.4 or in international patent application WO 00/18997.
  • both the initial value and the feed speed-dependent part of the pressing force are parameterized in a suitable manner and, for example, can be adapted to the respective sewing conditions via at least one control panel.
  • the device has at least one stator element designed as a housing (see above), which can be (permanently) connected to at least one mounting plate and / or which can be arranged on the rear of the housing head of the sewing device, at least a rotor element designed as a drive rod (see above), at least one drive motor preferably operated with direct current (see above), at least one gear arranged between the drive motor and the auxiliary material transport device and at least one arranged between the gear and the auxiliary material transport device
  • Transmission element for transferring motion to the mass transport additional device.
  • the device can in this case have at least one support element that is connected to the rotor element and is preferably mounted such that it is secured against rotation, to which the drive motor, the transmission and the transmission element are attached (the support element can be secured against rotation by means of at least one guide rod, for example).
  • the carrier element is pretensioned by means of at least one resilient, low-mass coupling element, preferably by means of at least one helical spring.
  • FIGS. 1 to 5 by way of example an exemplary embodiment of the device for transporting sewing material according to the present invention is illustrated.
  • Figure 1 shows an embodiment of a
  • FIG. 2 shows a diagram of the force F of the presser device as a function of the angle of rotation ⁇ of the main shaft of the sewing device;
  • Figure 3 shows a first embodiment of the device from the device for Transporting the sewing material from FIG. 1, in a sectional view;
  • Figure 4 is a schematic representation of the
  • FIG. 5 shows a diagram of the pressure force F p of the mass transport additional device as a function of the machine speed n.
  • Identical reference numerals refer to elements or features of the same or similar design in FIGS. 1 to 5.
  • the drawing shows a device for transporting sewing material provided for a sewing device 10 or sewing machine 10 (see FIG. 4), which has a fabric pusher device 1 (see FIG. 1) embedded in a needle plate 7 for advancing the sewing material in the fabric push direction D ( see Figure 1: arrow).
  • the sewing device 10 hereinafter the term “sewing device” also includes sewing machines, the present invention relating both to sewing devices and to sewing machines) has an action on the upper layer of fabric 8 of the sewing material with a pressing force Fp and with a rotational speed Up rotating
  • the fabric transport additional device 2 serves to compensate for the offset between the upper fabric layer 8 and the lower fabric layer 9 of the sewing material to be processed with the sewing device 10. This offset occurs when the lower fabric layer 9 is non-positively entrained by the teeth of the fabric pusher device 1, while the upper fabric layer 8 is only carried along by the friction between the upper fabric layer 8 and the lower fabric layer 9.
  • the sewing material is held down with the presser device 6 during stitch formation and the transport of the sewing material, so that the upper fabric layer 8 and the lower fabric layer 9 are pressed together between the presser device 6 and the pushing device 1 and by means of the pushing device 1 can be transported in fabric direction D.
  • the fabric pusher device 1 makes an approximately elliptical movement: While the fabric pusher device 6 moves a little further upwards, the fabric pusher device 1 begins to push the fabric layers 8, 9 in the fabric pusher direction D. During this transport phase, the force F of the presser device 6 now decreases sharply (see FIG. 2: sharp drop in the force F exerted by the presser device 6 as a function of the angle of rotation ⁇ of the main shaft of the sewing device 10) until a spring force moves upwards, that is to say of the fabric pusher device 1 directed movement of the fabric presser device 6 brakes and the push device 6 presses the material again.
  • the fabric pusher device 1 moves downward, that is to say in the direction away from the fabric presser device 6, so that the pressure of the fabric presser device 6 briefly decreases again.
  • the latter phase has no significant influence on the offset between the upper fabric layer 8 and the lower fabric layer 9.
  • the additional material transport device 2 engages the upper fabric layer 8 (cf. FIG. 1).
  • a material transport exclusively with the additional material transport device 2 would cause a so-called “negative offset”, that is to say that the upper layer of fabric 8 leads the lower layer 9 of material.
  • a seam section can be produced without an offset.
  • the device for transporting sewing material according to the embodiment of Figures 1 to 5 is like this trained that even with changing conditions (such as variable machine speed n of the main shaft of the sewing device 10 and thus at variable feed speed) varying offset between the upper layer 8 and the lower layer 9 always convincing, especially completely uniform sewing results can be achieved.
  • the pressure force Fp which is designed in the form of a rotating take-off roller
  • Additional material transport device 2 exerts on the upper fabric layer 8 of the material to be transported, and / or the rotational speed Up can be adapted to the feed speed by means of a device 3 (cf. FIG. 3).
  • the pressing force Fp exerted by the auxiliary material transport device 2 on the upper fabric surface 8 of the material to be transported can be increased with increasing machine speed n and / or the rotational speed Up of the auxiliary material transport device 2 in addition to the proportional force Increase can be increased even further with increasing machine speed n.
  • the rotational speed Up is the
  • Additional mass transport device 2 can be increased further in addition to the proportional increase with increasing machine speed n. This can also take into account the fact that the offset between the upper layer 8 and the lower layer 9 increases with increasing machine speed n, so that the mass transfer device 2 also has to develop an increasingly greater tensile stress in the upper layer 8.
  • auxiliary material transport device 2 acts as an actuator in the exemplary illustration in FIG. 3.
  • the pressing force Fp and / or the rotational speed Up can additionally be adapted to the nature of the material to be transported by means of the device 3. This can take account of the fact worn that the offset between the upper layer 8 and the lower layer 9 not only by the machine speed n, but also by the nature of the material to be transported and consequently in particular by the frictional relationships between the lower layer 9 and the upper layer 8 and in particular is determined by the frictional relationships between the upper layer of fabric 8 and the presser device 6.
  • the essence of the present invention is therefore to be seen in the fact that when sewing together the upper fabric layer 8 and the lower fabric layer 9, an offset caused by non-uniform presser forces F - as shown in FIG. 2 - and by the resulting non-uniform feed conditions, that is to say the upper ones are left behind
  • the fabric layer 8 can be compensated by providing, in addition to a conventional fabric slide device 1, an individually adaptable fabric transport additional device 2 which acts on the upper fabric layer 8.
  • the upper layer of fabric 8 is placed slightly under tension (see FIG. 1), the magnitude of the tension being influenced by the amount of pressure force Fp of the mass transfer device 2 by a low pressure force Fp, a small tension in the top layer 8 and in connection with this causes the mass transport additional device 2 to slip through at an early stage; in a corresponding manner, a higher pressure force F p causes a higher tensile stress in the upper layer of fabric 8 and in connection therewith later slipping through the
  • the tensile stress during the briefly occurring phases of low presser force F causes the upper layer of fabric 8 to be slightly advanced over the lower layer of fabric 9 and the offset that otherwise occurs is compensated for.
  • the mass transport additional device 2 operates in low speed ranges np ⁇ 500 min " 1 of the device 3 in an intermittent mode.
  • a switch is made to a continuous drive, that is to say the mass transfer additional device 2 operates in a continuous mode in high speed ranges np> 500 min ⁇ 1 of the device 3 into account that in speed ranges np above about 500 min "1 an intermittent motion by mass inertia and by the elastic behavior drive members gradually already looped to a quasi-continuous motion.
  • the stretching of the fabric layers 8, 9 depends on the frictional relationships between the auxiliary material transport device 2 and the (nature of) the upper fabric layer 8.
  • the stretch in the material to be sewn can be influenced with the adjustable force Fp with which the additional material transport device 2 is pressed against the material to be sewn.
  • the transport path of the fabric transport device 2 is slightly larger per stitch-forming process than the feed path of the fabric pusher device 1. This technical measure also ensures that the sewing material is always kept under tension when feeding in fabric direction D, which is when sewing the upper layer of fabric 8 and the lower one Layer 9 causes an offset formation to be avoided.
  • Additional mass transport device 2 can be controlled electronically.
  • an electronic control device 4a, 4b (cf. FIG. 4) for controlling the pressure force Fp of the mass transport additional device 2 and / or the speed p of the device 3 (-> the rotational speed Up
  • Mass transport additional device 2 provided.
  • Rotation speed Up the Additional material transport device 2 depend, among other things, on the machine speed n, the machine speed n can be determined in the electronic control device 4a, 4b (see FIG. 4), so that the pressing force Fp of the additional material transport device 2 and / or the speed np of the device 3 can be adjusted at any time (-> the rotational speed U p the
  • Mass transport additional device 2 takes place at the machine speed n.
  • the rotational speed Up of the mass transport additional device 2 is determined not only by the machine speed n, but also by the stitch length L, among other things. Since this stitch length L is mechanically set in the sewing device 10, the stitch length L is generally not known to the electronic control device 4a, 4b. Not least for this reason, the electronic control device 4a receives the information about the stitch length L by input using a control panel 5 (cf. FIG. 4).
  • the setpoint n so n (see FIG. 4) for the speed nMotor ( v 9l • FIG. 4) of the drive motor 33 of the device 3 and thus its speed np is then determined by a computing algorithm RA I (see FIG. 4).
  • the speed n p of the device 3 (-> the rotational speed Up of the mass transport additional device 2) is controlled by the (current) controller 4a (cf. Figure 4) regulated.
  • the embodiment shown in Figures 1 to 5 takes advantage of the fact that when Drive motor 33, the speed np mediated by the same is directly proportional - in any case essentially - to the current supplied to drive motor 33. For this reason, the drive motor speed n motor (cf. FIG. 4) is electronically controlled and consequently the desired speed np of the device 3 (-> the desired circulation speed p of the mass transport additional device 2) is effected.
  • the pressing force Fp of the fabric transport additional device 2 is determined not only by the machine speed n, but also, among other things, by the frictional force acting between the fabric transport additional device 2 and the upper fabric layer 8 of the sewing material. Since this frictional force depends on the nature of the material to be transported, the electronic control device 4a, 4b generally does not know the frictional force. Not least for this reason, the electronic control device 4b receives the information about the nature of the material to be transported by input by means of a control panel 5 (cf. FIG. 4). The target value F target ("see FIG. 4) for the pressing force Fp of the mass transfer device 2 is then determined by the computing algorithm RA II (see FIG. 4).
  • the pressing force Fp of the mass transport additional device 2 is regulated by the (current) controller 4b (cf. FIG. 4).
  • the embodiment shown in Figures 1 to 5 takes advantage of the fact that when Linear motor 30, which is at least essentially - directly proportional to the current supplied to the linear motor 30 (cf. FIG. 4: i otor) by the same contact pressure force Fp. For this reason, the linear motor current I motor is electronically controlled and consequently the desired pressure of the mass transport additional device 2 is effected ,
  • the force of the linear motor 30 does not have to be measured here.
  • the fabric transport additional device 2 is designed such that it can be lifted off the upper fabric layer 8 of the sewing material, for example in order to be able to remove the sewing material from the sewing device 10. This can also be accomplished by means of the linear motor 30, it being noted that the linear motor 30 does not have to perform a positioning function in this connection.
  • the features and the advantages of the linear motor 30 reference is made in full to the type of motor as described in German patent application DE 199 45 443.4 or in international patent application WO 00/18997.
  • both the initial value F Q and the feed rate-dependent part Fp> F 0 of the pressing force Fp can be parameterized in a suitable manner and, for example, adjusted to the respective sewing conditions using the control panel 5 (see FIG. 4):
  • Mass transport additional device 2 is the
  • the device 3 plays an essential role in the exemplary embodiment illustrated with reference to FIGS. 1 to 5.
  • their linear motor 30 has a stator element 31 designed as a housing, which is firmly connected to a mounting plate (not shown in FIGS. 1 to 5 for reasons of clarity) and which is arranged on the rear of the housing head of the sewing device 10.
  • a rotor element 32 designed as a drive rod is mounted in the stator element 31.
  • the device 3 also has a direct current operated drive motor 33, one between the drive motor 33 and the
  • Additional material transport device 2 arranged gear 34 and a transmission element 35 arranged between the gear 34 and the additional material transport device 2 for transmitting motion to the additional material transport device 2.
  • the device 3 in this case has a carrier element 36, which is connected to the rotor element 32 and is secured against rotation, to which the drive motor 33, the gear 34 and the transmission element 35 are attached.
  • the support element 36 is secured against rotation by means of a guide rod 37.
  • the carrier element 36 is prestressed by means of a resilient, low-mass coupling element 38 in the form of a helical spring. Also with regard to the designs, the features and the advantages of the coupling element 38, reference is made in full to the German patent application DE 199 45 443.4 or to the international patent application WO 00/18997, in particular with regard to the power-saving mode of operation associated with the coupling element 38.

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

Abstract

L'invention concerne un dispositif prévu pour un système de couture ou une machine à coudre et servant à transporter un article à coudre. Ce dispositif comprend : au moins un dispositif de poussée du tissu pour faire progresser l'article à coudre dans le sens de progression du tissu, à une vitesse de progression déterminée par la vitesse de la machine et par la longueur des points ; au moins un dispositif additionnel de transport de tissu agissant sur la couche supérieure du tissu, à la manière d'un élément de pression, avec une force de pression et tournant à une vitesse de rotation. Ledit dispositif additionnel de transport est placé dans le sens de progression du tissu, derrière le dispositif de poussée du tissu et peut être entraîné de manière proportionnelle à la vitesse de la machine et à la longueur des points. Un dispositif permet d'accentuer, à mesure que la vitesse de la machine augmente, la force de pression que le dispositif additionnel de transport du tissu exerce sur la couche supérieure du tissu de l'article à coudre à transporter et/ou d'augmenter davantage encore la vitesse de rotation du dispositif, à mesure que la vitesse de la machine augmente, en sus de l'augmentation proportionnelle.
EP01953159A 2000-05-25 2001-05-22 Dispositif pour transporter un article a coudre Withdrawn EP1297208A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10025822A DE10025822C5 (de) 2000-05-25 2000-05-25 Vorrichtung zum Transportieren von Nähgut
DE10025822 2000-05-25
PCT/EP2001/005884 WO2001090469A2 (fr) 2000-05-25 2001-05-22 Dispositif pour transporter un article a coudre

Publications (1)

Publication Number Publication Date
EP1297208A2 true EP1297208A2 (fr) 2003-04-02

Family

ID=7643474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01953159A Withdrawn EP1297208A2 (fr) 2000-05-25 2001-05-22 Dispositif pour transporter un article a coudre

Country Status (11)

Country Link
US (1) US20030136320A1 (fr)
EP (1) EP1297208A2 (fr)
JP (1) JP2003534076A (fr)
KR (1) KR20030007406A (fr)
CN (1) CN1396970A (fr)
AU (1) AU2001275673A1 (fr)
BR (1) BR0107615A (fr)
CZ (1) CZ20023559A3 (fr)
DE (1) DE10025822C5 (fr)
MX (1) MXPA02011601A (fr)
WO (1) WO2001090469A2 (fr)

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JP2007014556A (ja) * 2005-07-07 2007-01-25 Ykk Corp 生地片の縁縫装置
DE102006042332A1 (de) * 2006-09-08 2008-03-27 Dürkopp Adler AG Nähmaschine zum Vernähen zweier Nähgutteile unter Einarbeitung von Mehrweite
DE102009039252A1 (de) * 2009-08-28 2011-03-10 Dürkopp Adler AG Nähmaschine
CN103693485A (zh) * 2013-12-31 2014-04-02 吴江市中盛机械有限公司 一种防滑拖布辊
JP6653600B2 (ja) 2016-03-10 2020-02-26 蛇の目ミシン工業株式会社 ミシン
CN105908398B (zh) * 2016-06-29 2019-05-31 广东溢达纺织有限公司 自动控边缝纫机及自动控边缝纫方法
JP2018051147A (ja) * 2016-09-30 2018-04-05 ブラザー工業株式会社 ミシンとミシンの制御方法
CN114016223B (zh) * 2021-11-15 2022-08-16 诸暨远景机电有限公司 绣花机压脚控制方法

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CN1396970A (zh) 2003-02-12
CZ20023559A3 (cs) 2003-05-14
DE10025822A1 (de) 2001-12-06
MXPA02011601A (es) 2003-10-06
DE10025822C5 (de) 2008-09-18
US20030136320A1 (en) 2003-07-24
BR0107615A (pt) 2002-12-03
AU2001275673A1 (en) 2001-12-03
WO2001090469A2 (fr) 2001-11-29
WO2001090469A3 (fr) 2002-04-04
KR20030007406A (ko) 2003-01-23
JP2003534076A (ja) 2003-11-18
DE10025822C2 (de) 2002-05-08

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