KR20110070821A - Multi-head embroidery machine - Google Patents

Abstract

PURPOSE: A multihead/multi-needle embroidery machine is provided to ensure high efficiency and to independently move a needle tappet. CONSTITUTION: A multihead embroidery machine comprises a plurality of needle positions(63) arranged in a displacement direction. Each needle position has a needle tappet(70). A transmission is mounted on a carrier(71) to generate reciprocating motion of the needle tappet. The transmission comprises a pivot lever which derives a fabric compressor unit.

Description

Multi-Head Embroidery Machine {MULTI-HEAD EMBROIDERY MACHINE}

The present invention relates to a multi-head embroidery machine according to the preamble of claim 1.

According to the book "Technology of Embroidery" by Friedrich Schoner and Klaus Freier (Fachbuchverlag Leipzig, 1982, first edition), the embroidery machine can be classified according to various criteria The first classification is based on the number of thread systems involved in the embroidery process: In some machines, the embroidery is produced by only one thread system, while the other machines have two thread systems, That is, another second sub-thread, a back-thread, a spool-thread, a shuttle-thread, or a bobbin thread.

The second classification is based on the number of simultaneous needle work: single needle embroidery machines include Singer, Adler and crank-acting embroidery machines. Multi-needle or rapport embroidery machines are shuttle or hand embroidery machines.

In addition to these two groups, there are also multi-head embroidery machines not belonging to these two groups. The principle of this machine is based on the fact that three, four, six, ten or twelve singer embroidery machine heads, which are set to move by a common drive shaft, are mounted on a high capacity platform. Thereby a simultaneous drive of the heads is required, and all the needles penetrate or exit simultaneously to the embroidery ground. In this case, the embroidery ground can be fixed to the embroidery frame individually for each head. These embroidery frames are fixed by bolting to creel-like structures and controlled in a horizontal plane by a small computer. In the case of an automatic embroidery machine with six heads, the embroidery area is approximately 240 x 200 mm. Embroidery-generating elements and embroidery-generating processes are identical to singer embroidery machines. The only difference is that a fabric press is provided for each needle, which secures the embroidery ground during the embroidery process. The fabric press is always lifted whenever additional displacements occur in the embroidery frame. Furthermore, individual embroidery heads are usually equipped with a thread detection system and automatically switch off the machine in the event of a thread failure.

The first multi-head embroidery machines were already sold 100 years ago at a German singer sewing machine factory (see "Embroidery Technique", Coleman, Schneider, 1991). The first automatic multi-head embroidery machine was introduced on the market in 1927 (also known as the term Wurker-Automat). For further consideration, reference is made to the general text "Technical and Production Engineering", Klaus Fryer, VEB Fachtbacherrock, LifeJig, pages 130 and 131.

The present invention relates to the aforementioned multi-head embroidery machines, wherein each embroidery head is provided with a plurality of needle positions. To be more distinct, these multi-head embroidery machines are also referred to as multi-head multi-needle embroidery machines in the following description. In general, each needle position is a needle-compensating thread tension component for needles and upper threads arranged on a needle tappet that is driven by a drive unit and designed to move up and down. Including a thread detector (optional), a thread reader (also called a thread support lever in the literature), and thread guide devices. The embroidery-generating members mentioned above in this description are referred to as the upper thread unit as a whole. Embroidery heads of multi-head embroidery machines can be mounted and moved laterally on the support arm. The lower portion of each embroidery head is a needle plate, in which a pinhole is provided for the needle and the needle plate partially forms an embroidery position. Each needle of the embroidery head can move laterally to the embroidery position, and during operation, the embroidery fabric is placed taut in the frame displaceable in the x- and y-directions. The needle disposed at the embroidery position penetrates through the pinhole through the embroidery fabric during needle movement. The upper thread is provided through the embroidery fabric and a loop is formed at the back of the embroidery fabric as a result of the corresponding needle movement. The bottom thread is fed through this loop. As the needle turns, the upper thread becomes taut and so-called needle stitches form on the embroidery fabric. In the embroidery process, only one of the needle positions is activated in each case, ie located at the embroidery position.

Embroidery heads of the mentioned multi-head embroidery machines are arranged in a known manner and can be arranged in a specific rapport arrangement along the support arm.

Thus, a feature of these multi-head multi-needle embroidery machines is that each embroidery head has a plurality of needle positions. This has the advantage that each needle position can be provided with a different thread, so that multi-color embroidery can be performed by only the corresponding needle set to move.

The needle tappets and thread levers of the associated needle group are usually mounted on a carrier or needle casing, respectively, which provide a thread lever associated with the selected needle tappet to the front of the fixedly attached drive as a result of displacement for the purpose of changing the thread.

Conventional multi-head multi-needle embroidery machines are described by way of example in FIGS. 1 and 2. It includes a rack 201, an embroidery platform 203 arranged on the rack 201 and a plurality of embroidery heads 205 arranged laterally over the embroidery platform. As shown in FIG. 2, each embroidery head 205 has a plurality of needle positions each having a needle 215. All needle positions are thereby fixed thread guide members 207 or thread brakes, up and down thread take-up lever or thread leader 209, thread reversal components 211, and needle tappets. 214, together with a needle 215 arranged on the needle bar 213. Also, as shown in FIG. 2, each needle tappet 214 is provided with a fabric compactor 217. An embroidery frame 219 is provided below the embroidery heads 205 to which the embroidery ground to be embroidery can be clamped. Embroidery frames 219 can be inserted into the high capacity clamping frame 221 and extend over the width of the embroidery platform 203. The clamping frame 221 can move in the x- and y-directions, in a known manner. As mentioned above, the embroidery heads are arranged on the linear guide 223 and can thus move in the x-direction.

A disadvantage of known multi-head multi-needle embroidery machines is that the fabric compactor is arranged directly on the needle tappet, thus engaging the movement of the needle tappet. Another disadvantage is that each fabric press is required for each needle.

US patent application 2007/0261621 discloses a multi-head embroidery machine, with only one fabric press foot provided for each embroidery head. Here, the fabric press foot, the needle bar and the large thread leader are driven by respective motors. More motors are used to laterally move the needle bar housing along the guide rails to engage the drive in each case of a particular needle position.

The fabric press foot is mounted on a bar guided by the guide portion in a vertical movement method. In the central area of this bar, two positioning members are attached to each other at a predetermined distance. A connecting member is disposed between the position members, and the connecting member is rotatably arranged on the bar. The connecting member is connected to the shaft of the fabric presser drive motor through the connecting arm and the drive lever. The roller is mounted to one of the positioning members, and the roller is connected to the guide groove of the guide portion. The guide groove has upper and lower straight guide regions connected to each other via oblique guide regions. During the sewing process, the roller moves up and down within the lower guide area simultaneously with the needle drive. In this connection, the pinhole of the fabric presser foot is exactly positioned over the pinhole of the needle plate.

For needle replacement, the drive shaft of the drive motor rotates in such a range that the roller displaces from the top of the oblique guide region to the end of the upper guide region. In this process, the fabric press foot mounted on the bar rotates so that the pinhole of the fabric press foot is away from the pinhole of the needle plate.

DE-OS-10 2008 004855 discloses a device for lifting the fabric press foot of a multi-head embroidery machine. The device includes a drive cam disposed on the drive shaft, the drive shaft driving the cam interacts with the transfer member to later generate a vibratory movement. The transfer member is hinged to the first end of the pivotable drive lever. The second end of the drive lever is hinged on the drive block guided along the guide bar in a vertical movement manner. The drive block guides the connection holder which actively interacts with the drive holder. The drive holder is guided on the needle tappet in an axially moving manner. The fabric compactor foot drive shaft is mounted on a parallel drive holder slightly spaced from the needle tappet guide shaft. Also provided is a fabric press foot adjuster for moving the pivot of the fabric press drive lever. As a result, the height of the fabric presser foot can be adjusted.

In particular, as shown in DE-OS-10 2008 012 846, which discloses an improvement of the embroidery machine according to DE-OS-10 2008 00485, a spring is provided between the drive block and the connection holder, The spring biases the connection holder downward, so that the pressing force of the fabric press foot on the needle plate can be limited. The embodiment of DE-OS-10 2008 012 846 is characterized in that both the needle bar and the fabric presser foot can be operated by separate drive mechanisms. This has the advantage that the travel path of the fabric compactor foot can be freely generated, and thus the stroke and the upper limit of the fabric compactor foot can be freely generated. However, the disadvantage is the need for a complex controller to synchronize the individual drives. Another disadvantage is that for each needle position, many motors are required corresponding to the number of needle positions. This not only increases the cost of the embroidery machine described, but also easily damages the embroidery machine.

It is an object of the present invention to provide a multi-head multi-needle embroidery machine which does not have the specific disadvantages mentioned above. In particular, it is an object of the present invention to provide a multi-head multi-needle embroidery machine having high efficiency compared to conventional machines. It is an object of the present invention to provide a machine in which the fabric press can move independently of the movement of the needle tappet. Another object is to provide an embroidery machine in which the drive unit can be manufactured powerfully and economically.

The present invention relates to a multi-head embroidery machine. It comprises one or more embroidery heads having a plurality of needle positions. The needle positions are arranged on the carrier so as to be displaceable in the x direction, ie laterally relative to the embroidery position. Each needle position includes members such as thread leaders, thread guide devices and needle tappets to which a needle can be attached to each. The needle tappets can move back and forth in the z direction. The aforementioned members are also referred to as the upper thread unit as a whole. Each embroidery head is associated with a lower thread unit. A tenter for clamping the embroidery fabric is located between the upper thread unit and the lower thread unit. The tenter has two first and second fabric fastening members arranged spaced apart from each other in the y direction. As is generally known, multi-head embroidery machines have, for example, a transmission with a central drive shaft to drive the upper and lower thread units simultaneously.

According to the invention, this object is achieved in an embroidery machine according to the preamble of claim 1 by the fact that the transmissions of the fabric compactor units are driven by a common fabric compactor drive shaft. This has the advantage that the needle movement and synchronization are possible. Since no individual motors are used, the drive can be manufactured in an inexpensive manner. Here, the motor of the main drive shaft of the embroidery machine can be used to drive the fabric presser drive shaft by engaging the fabric presser drive shaft and the main drive shaft. The main drive shaft and the fabric compactor drive shaft preferably extend over the entire length of the embroidery machine.

Preferably, the same drive shaft is used to drive the needle tappet and the fabric presser, more preferably the large capacity thread leader. In this way, manufacturing costs can be further reduced. To drive the needle tappet and the large thread leader, a transmission for the fabric press will be used as will be described below.

Preferably, the axially movable fabric compactor is arranged at a distance from the needle attached to the needle tappet. This means that in contrast to the prior art, the fabric compactor in a multi-needle embroidery machine is no longer arranged directly on the needle tappet and can be formed as a separate drive unit that can be completely separated from the needle drive. This has the great advantage that only one fabric press is needed for each embroidery head. Another advantage is that the fabric press is no longer coupled directly with the movement of the needle tappet. Another greater advantage is the fact that the fabric press is not constrained to the movement pattern of the needles and may have an independent movement pattern. Thus, the multi-needle embroidery machine according to the invention based on the singer embroidery machine known for decades has a completely new approach. Since the distance between the fabric press and the needle is longer than in the prior art, there is no risk of delaying the stitching process. In the case of the previously known and mentioned embroidery machines, the fabric press is placed very close to the needle. Usually, the distance between the needle and the fabric press is 2-4 mm. This means that the maximum needle stitch length is limited to this distance 2-4 mm. The upper thread, on the other hand, can be clamped between the fabric compactor and the needle plate during the stitching process, which causes thread breaks.

Preferably, the fabric presser unit comprises a fabric presser tappet having a fabric presser finger detachably attached thereon and having a fabric presser finger disposed at a distance from the needle disposed on the needle tappet. Here, the distance of the fabric presser finger from the needle is preferably at least 5 mm, preferably at least 10 mm, more preferably at least 12 mm.

Preferably, each fabric compactor unit is driven by a separate transmission. This has the advantage that no excessively large weight needs to be moved. A preferred embodiment is provided for a fabric compactor unit driven by a common drive shaft. This has the advantage of being simply synchronized with the needle movement. The drive shaft is arranged on the carrier and can extend through its entire length. Apart from this, the drive shaft for the fabric compactor unit can be combined with the central drive shaft.

Preferably, the transmission separate from the needle drive unit is driven for the fabric press unit. To drive the fabric compactor unit, known transmissions of different designs known to those skilled in the art such as, for example, couplers or cam transmissions can be used. According to one embodiment, the transmission comprises a pivot lever pivotable about the pivot axis and drives the fabric compactor unit. Preferably the pivot lever is fixed and arranged on the shaft in a torque-proof manner. Cam disks, eccentric tappets, cams, and the like can be used to generate vibrational motion. One solution is to provide a transmission comprising a cam disk that converts the rotational motion of the drive shaft into a reciprocating motion of the fabric compactor. Alternatively, the transmission may include a lever mechanism, an eccentric gear, to generate a reciprocating movement of the fabric compactor. One low cost solution is to provide a drive shaft that is coupled to the main drive shaft of the embroidery machine to generate vibrational motion. This can be accomplished by toothed belts, chains or other ways. As a result, the fabric compactor is fully synchronized with the needle drive.

According to a preferred embodiment, the fabric compactor is hinged to the first end of the pivot lever and the transmission is connected to the second end. It is a simple and reliable design that can be manufactured in an economical way. Preferably, the first and second extensions are provided at the second proximal end of the pivot lever at a distance from each other. These two first and second extensions are preferably arranged on opposite sides of the plane extending through the pivot axis of the pivot lever and the rotation axis of the drive shaft. Here, the first eccentric disk can be connected to the first extension to cause the movement of the pivot lever in one direction, and the second eccentric disk can be connected to the second extension to cause the movement of the pivot lever in the opposite direction. have. This embodiment allows the pivot lever to actually oscillate sufficiently.

Preferably, the fabric press comprises a fabric press tappet, the first end of which is hinged to the first end of the pivot lever via a compensation connecting rod, and at the second end, the fabric press finger is attached. Here, the compensating connecting rod compensates for the deformation caused by the partial circulation movement of the pivot lever. For convenience, the fabric presser finger is made of an elastic deformation material, preferably spring steel. It can be produced in a low cost way by forming techniques from metal sheets.

Preferably, the portion of the fabric compactor finger in contact with the fabric is preferably coated with an elastic plastic material. This has the advantage that on the one hand thin and delicate fabrics can be processed, on the other hand, improved adhesion for common fabrics can be achieved. Preferably, the fabric press is run axially movable relative to the fabric press tappet. This has the advantage that embroidery of different heights and / or fabrics of different thicknesses can be fixed. Unlike conventional multi-head multi-needle embroidery machines, each one fabric press is provided on each needle tappet and is laterally displaceable, and the fabric press is fixedly mounted on the embroidery machine, i.e. laterally It cannot be displaced. In principle, even if only one embroidery head with a plurality of needle positions is provided, according to a preferred embodiment, the plurality of embroidery heads are arranged on the support rail in a laterally displaceable manner. To select a different needle position, the embroidery head is laterally displaceable with respect to the drive member to be the desired needle position to interact with the drive member.

As is already known in the prior art, an embroidery machine frame is provided, on which a drive for the needle stitch forming members is preferably stationary, i. E. Fixedly mounted. Here, the embroidery head or heads with a plurality of needle positions are laterally displaceable with respect to the drive. Preferably, a plurality of embroidery heads are provided.

Embodiments of a multi-head multi-needle embroidery machine according to the present invention will be described below in an exemplary manner with reference to the drawings.

1 is a perspective view of a conventional multi-head multi-needle embroidery machine having a plurality of embroidery heads.
2 is a front view of a single embroidery head of a known multi-head multi-needle embroidery machine having a plurality of needle positions.
3 is a side view of a fabric compactor unit according to the invention with a fabric compactor, the fabric compactor fingers being disposed on the fabric compactor and the transmission for the fabric compactor.
4 is an enlarged perspective view of the transmission of FIG. 3.
5 is an enlarged view of a fabric compactor finger.
6 is a partial perspective view of an embroidery head having a plurality of needle positions and a fabric press.

The fabric presser unit 11 shown in the figures basically comprises a fabric presser 13 which is movable up and down axially, and a transmission 15 for generating the fabric presser movement. The fabric presser 13 consists of a fabric presser tappet 17 on which a compensating connecting rod 19 is hinged on its first end, and on which a fabric presser finger 21 is detachably attached. . The fabric presser tappet 17 is guided in an axially displaceable manner by one or more bearings of guide bushes, not shown in the figures.

The fabric presser finger 21 has an upper portion 22, preferably with a flat foot 23, during operation of the embroidery machine and stops against the embroidery fabric at the bottom dead center position of the fabric presser (Fig. 3 and 5). The upper portion 24 of the fabric press finger 21 is U-shaped and is used to bind to the fabric press tappet 17. In the legs 25, 27 of the U-shaped portion extending parallel to each other, recesses 29, 31 are provided, through which the fabric presser tappet 17 can extend together with the second end. . The fabric presser finger 21 is detachably bound to the fabric presser tappet 17 by a clamping block 35. The clamping block 35 is mounted to the fabric presser tappet 17 by a locking screw 37.

The fabric presser finger 21 is prevented from rotating in the slot 34 by pins 33 protruding from the clamping block 35. The pin 33 protrudes through the slot 34 in the base member of the U-shaped portion of the fabric press finger. The longitudinal extension of the slot defines the range of maximum travel of the fabric presser finger 21 relative to the fabric presser tappet 17. A spring 28 located on the fabric presser tappet 17 between the clamping block 35 and the leg 25 presses the leg 25 downwards, preferably a stop made of a damping material ( 26) pull the leg 27. For example, a plastic washer may be used as the stop 26. As a plastic material for the stop 26, an elastomer may also be used. The spring-elastic and restoring force of the fabric compactor finger 21 allows on the one hand embroidery of different heights and fabrics of different thicknesses on the other hand to be fixed on the needle plate at the bottom of the embroidery object.

Foot 23 is mounted on leg 25 of fabric press finger 21 via connecting piece 28. The foot 23 is configured flat and may preferably be a rectangular support plate extending approximately parallel to the legs 25, 27, or preferably aligned with the legs 25, 27. Unlike conventional fabric press feet, the fabric press foot of the present invention does not have recesses or openings for the needle because it is located far from the needle.

The transmission 15 for generating the fabric compactor movement in the axial longitudinal direction (arrow 39) includes a pivot lever 43 pivotable about the pivot axis 41, the pivot lever 43 having a first end thereof. It is hinged to the fabric press 13 or the compensating connecting rod 19 (FIG. 3). At the second end of the pivot lever 43, a first extension 45 and a second extension 47 are formed. In the first extension 45, the first roller 49 is supported to rotate freely, which roller can interact with the first cam disk 51 of the transmission 15. In the second extension 47, the second roller 53 is supported to rotate freely, and the second roller can interact with the second cam disk 55 of the transmission 15. The perimeter of the two cam disks 51, 55 forms eccentric cam paths. These cam paths are the result of the eccentric cam disks 51, 55 interacting with the rollers 49, 53 when the cam disks 51, 55 rotate, so that the pivot lever 43 is free to operate ( formed in a guided manner in a play-free manner. This is done by the fact that the cam roller is supported on the eccentric pin, which pin rotates until the pivot lever moves in a free motion manner. The cam disks 51, 55 are arranged in a torque-resistant manner on the drive shaft 59 rotatable about the axis of rotation 57. This drive shaft 59 is used to drive all the fabric compactors of the multi-head embroidery machine according to the invention together. Instead of a cam disk, other mechanisms known to those skilled in the art with regard to movement conversion can be used, which translates the rotational motion of the drive shaft into the vibratory motion of the needle-forming member, such as a fabric press. This may be, for example, a cam with a continuous cam groove or path, arranged in a torque-resistance manner on the drive shaft. In the cam path, the driven cam is guided to convert the rotational motion of the drive shaft into a reciprocating motion.

6 shows a partial perspective view of the embroidery head 61. The figure shows the needle at the bottom dead center of needle sweat formation movement. The illustrated embroidery head 61 has a total of six needle positions 63, each of which has thread guide devices having a large thread leader 65, a needle tappet 70, and a needle 69 disposed thereon. 67). It can be seen that only one single fabric presser 13 is provided for each embroidery head 61, the fabric presser being arranged on the carrier 71 so as not to be fixed, ie displaced laterally. In the carrier 71, one or preferably a plurality of guides 73 are provided (one in FIG. 6), whereby the embroidery head 61 is displaceable with the needle positions. This means that the embroidery head 61 is formed as a carriage which is displaceably supported on the guides 73. The carrier 71 is fixedly arranged on the embroidery machine frame 72, which is not shown in detail.

A needle plate 75 is provided below the embroidery head 61, and the embroidery ground on the needle plate is stopped during the embroidery process. A pinhole 77 is provided in the needle plate 75 through which the needle 69 can guide the needle thread to the back of the embroidery ground. There is a distance of at least 5 mm, preferably at least 8 mm, more preferably at least 12 mm, between the needle 69 and the fabric press foot 21.

To select a specific needle position for the embroidery operation, the embroidery head 61 is displaced relative to the carrier 71 until the needle position with the desired thread is positioned forward of the drive member (not shown in detail). In this position, the drive member can be engaged with the needle tappet, resulting in vibratory movement of the needle tappet through the transmission and the corresponding transmission. Unlike a needle drive, the fabric presser tappet can be permanently engaged with the drive.

The embroidery machine, in particular the multi-needle embroidery machine, has one or more embroidery heads mounted on the carrier 71 and has a plurality of needle positions 63. The needle positions 63 are arranged in a displaceable manner with respect to the embroidery position in the lateral displacement direction along the carrier 71. Each of the needle positions 63 is, by definition, all basic, such as, for example, a thread leader 65, various thread guide devices 67, and a needle 69 disposed on the needle tappet 70. Needle stitch forming members. Each of the needle tappets 70 in which the needles 69 are arranged may be moved by the needle drive unit back and forth or up and down in the first direction. Each embroidery head has a lower thread unit associated with it, which provides a lower thread. The transmission 15 arranged on the frame 72 provides for the simultaneous movement of the needle stitch forming members of the upper thread unit and the lower thread unit. The multi-needle embroidery machine described above is characterized in that at least one fabric compactor unit 11 having an axially movable fabric compactor 13 is provided on the frame 72 at a distance from the needle tappet 70.

11: fabric press unit
13: fabric compress
15: transmission
17: Fabric Squeezer Tappet
19: Compensation Link Load
21: fabric compress finger
22: Lower region of fabric press finger
23: Foot of fabric press finger
24: upper region of fabric press finger
25, 27: legs of the U-shaped region
26: stop
29, 31: recesses in the legs
28: spring
29: recess in leg 25
30: connecting parts
31: recess in leg 27
33: screw connection
34: slot
35: clamping block
37: locking screw
39: Axial travel direction of the fabric presser tappet
41: pivot axis of pivot lever
43: pivot lever
45: first extension
47: second extension
49: first roller on the first extension
51: first cam disk
53: second roller on the second extension
55: second cam disk
57: axis of rotation on the drive shaft
59: drive shaft for cam disks
61: embroidery head
63: needle positions
65: large thread reader
67: thread guide devices
69: needle
70: needle tappet
71: carrier
72: embroidery machine frame
73: guide rails
75: needle plate
77: pinhole

Claims (18)

A multi-head embroidery machine having a plurality of embroidery heads arranged on a carrier 71,
Each embroidery head has a plurality of needle positions 63 arranged in a displaceable manner relative to the embroidery position in the direction of displacement along the carrier 71, ie laterally, each needle position 63 being a needle. (69) having a needle tappet (70) disposed thereon, a transmission is mounted on the carrier (71) to generate a reciprocating motion of the needle tappet, and each single fabric press unit (11) carries each embroidery head. A fabric presser 13 movable axially for each fabric head, each embroidery head including a transmission for each fabric presser,
Multi-head embroidery machine, characterized in that the transmissions of the fabric compactor units (11) are driven by a common fabric compactor drive shaft (59). 2. Multi-head embroidery machine according to claim 1, characterized in that the axially movable fabric press (13) is arranged at a distance from the needle fixed to the needle tappet (70). The fabric presser unit 11 according to claim 1 or 2, wherein the fabric presser unit 11 comprises a fabric presser tappet 17, on which the fabric presser finger 21 is preferably detachably mounted, Multi-head embroidery machine, characterized in that the fabric presser finger (21) is located at a predetermined distance from the needle tappet (70) or a needle disposed on the needle tappet (70). The transmission (15) according to any one of the preceding claims, wherein the transmission (15) comprises a pivot lever (43) pivotable about the pivot axis (41), which pivots the fabric press unit (11). Multi-head embroidery machine, characterized in that. 5. Multi-head embroidery machine according to any of the preceding claims, characterized in that the transmission (15) comprises cam disks (51, 55) for generating a reciprocating motion of the fabric compactor (13). 6. The multi-head embroidery machine according to claim 1, wherein the transmission generates a reciprocating motion of the fabric compactor by means of a lever mechanism and an eccentric gear. A fabric press (13) is hinged to the first end of the pivot lever (43), and the transmission (15) is connected to the second end of the pivot lever (43). Multi-head embroidery machine characterized in that. 8. The method of claim 4, wherein at the second end of the pivot lever 43, the first and second extensions 45, 47 are provided at a distance from each other and the first and second Extensions 45, 47 are arranged on opposite sides of the plane extending through pivot axis 41 of pivot lever 43 and rotation axis 57 of drive shaft 59,
On the first extension 45, a first eccentric disc 51 is connected to cause movement of the pivot lever 43 in one direction, and on the second extension 47, a second eccentric disc ( Multi-head embroidery machine, characterized in that 55 is connected to cause movement of the pivot lever 43 in the opposite direction. The fabric presser 13 according to claim 1, wherein the fabric presser 13 comprises a fabric presser tappet 17, the first end of the fabric presser tappet 17 pivoting through a compensating connecting rod 19. And a fabric presser finger (21) attached to the second end of the fabric presser tappet (17) hinged to the first end of the lever (43). 10. Multi-head embroidery machine according to claim 9, characterized in that the fabric press finger (21) is made of elastically deformable material, preferably spring steel. The multi-head embroidery machine according to claim 9 or 10, characterized in that the portion of the fabric presser finger (21) in contact with the fabric is coated with a plastic material. 12. Multi-head embroidery machine according to any of the claims 9 to 11, characterized in that the fabric press (13) is fixed. 13. The multi-head embroidery machine according to any one of claims 9 to 12, wherein a portion of the fabric compactor finger (21) in contact with the fabric is coated with at least a portion of the plastic material. 14. The frame 72 according to any one of the preceding claims, wherein a frame 72 is provided to mount a drive for the needle stitching members on the frame 72, the embroidery head or the heads being laterally displaceable with respect to the drive. Multi-head embroidery machine, characterized in that. 15. A multi-head embroidery machine according to any of the preceding claims, characterized in that the fabric presser finger (21) is axially movable relative to the fabric presser tappet (17). A fabric press (13) is detachably bound to a fabric press tappet by a lockable clamping member (35), and the braking member (26) is clamped (35). And, between the legs (27) of the fabric presser fingers (21). 17. The multi-head embroidery machine according to any one of the preceding claims, wherein the embroidery machine is a multi-head multi-needle embroidery machine, each embroidery head being connected with one fabric press unit 11, respectively. . 18. The multi-head embroidery machine according to any of the preceding claims, wherein the same drive shaft is used to drive the needle tappet, the fabric press and preferably the high capacity thread leader.

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