KR20110046336A - Multi-head embroidery machine and clamping frame therefor - Google Patents

Abstract

The multi-head multi-needle embroidery machine has a plurality of embroidery heads, each embroidery head having a plurality of needle positions. The needle positions are aligned on the carrier such that they are laterally displaced relative to the embroidery position. Each needle position, as embroidery-generating elements, has needles aligned on one or more thread leaders, thread guide devices and needle tappets, and is equipped to be able to move back and forth in a first direction. The lower thread unit is coupled to each embroidery head. The transmission moves the upper thread unit and the lower thread unit simultaneously. The clamping frame 11 is arranged between the upper thread unit and the lower thread unit to stenter the supported fabric 89, and the two first and second fabric fixing members 13 aligned at a distance from each other. , 15). These fabric fastening members are designed with first and second rotating fabric shafts 13, 15 and can be joined together and the supplied embroidery ground can be wound around the fabric fastening members.

Description

MULTI-HEAD EMBROIDERY MACHINE AND CLAMPING FRAME FOR THIS}

The invention relates to a multi-head embroidery machine according to the preamble of claim 1 and a clamping frame according to the preamble of claim 17.

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, each embroidery head being provided with a plurality of needle positions. To be further distinguished, these multi-head embroidery machines are also referred to in the following description as multi-head multi-needle embroidery machines. In general, each needle position moves up and down and includes stitch-compensating thread tension portions for the upper thread and the needle arranged on a needle tappet designed to be driven by the drive unit. It includes a thread detector (optional), a thread leader (also called a thread take-up lever in the literature), and thread guide devices. In this description mentioned above the embroidery-generating elements are also collectively referred to as the upper thread unit. Embroidery heads of multi-head embroidery machines are equipped to be able to move laterally on a support arm. The lower part of each embroidery head is a needle plate, forming an embroidery position on location, and a pinhole is provided for the needle. Each needle of the embroidery head can move sideways to the embroidery position, and during operation, the embroidery fabric is placed taut in a frame that can be displaced in the x- or y-direction. In the process of moving the needle, the needle located at the embroidery position passes through the embroidery fabric and passes through the pinhole. The upper thread is provided through the embroidery fabric and a loop is formed at the back of the embroidery fabric by the corresponding needle movement. The underlying thread is then served through this loop. As the needle returns, the upper thread becomes taut, so-called needle stitches form on the embroidery fabric. During the embroidery process, in each case only one of the needle positions is valid, ie the needle position is placed at the embroidery position. Embroidery heads of the mentioned multi-head embroidery machines are arranged in a known manner in a "rapport" 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 is provided with a different thread, so that multi-color embroidery can only be performed by the corresponding needle set to always move.

The needle tappets and thread levers, and their associated groups of needles, are usually installed in a carrier, which stops the selected needle tappets and associated thread levers to change the thread as a result of the displacement, in front of the drive attached. To move to.

Conventional multi-head multi-needle embroidery machines are described as examples 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 rowwise to the embroidery platform. As shown in FIG. 2, each embroidery head 205 has a plurality of needle positions, each provided with a needle 215. Thereby all embroidery positions are suspended thread guide members 207 or thread brakes, up and down thread support lever or thread leader 209, thread reversal parts 211 and needles. Together with the tappet 214, a needle 215 is arranged on the needle bar 213. Also, as shown in FIG. 2, each needle tappet 214 is provided with a fabric compactor 217. Embroidery frames 219 are provided under the embroidery heads 205, where the embroidery ground is fixed to be embroidered. Embroidery frames 219 can be inserted into large capacity clamping frame 221, which extends over the width of 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.

The clamping frame of a conventional multi-head multi-needle embroidery machine includes two fabric fastening members which are arranged with each other at an interval at which the fabric can be seated therebetween. In order to fix the fabric, also called embroidery ground in technical terms, the fabric must be fixed and ironed in the area. Embroidery ground is stentered and secured to the side edges. Generally, prior art multi-head embroidery sewing machines are provided with a clamping frame, one dimension of the embroidery sewing machine being substantially equal to the length of the machine (x-direction), and other dimensions of the embroidery sewing machine (y- Direction) is approximately 150-180 cm. The entire clamping frame can be moved using known guide devices and drive means in the x- and y-directions to be able to embroider the entire surface of the embroidery fabric.

In each case the lower thread for the embroidery head is provided by a bobbin, housed in a case and suitable for all conventional sewing machines. Threads can be wound up to 100 m in bobbins. This means that bobbins are replaced relatively frequently with multi-head embroidery machines. If the thread is finished serving, the bobbin must be replaced.

In the case of prior art multi-head multi-needle embroidery sewing machines, it has a relatively large footprint, which has a disadvantage corresponding to twice the depth of the clamping frame in one direction (y-direction). The large clamping frame also has the disadvantage that it is difficult to access the bobbin providing the lower thread during the operation of the machine. Frequently, to replace the bobbin, one must crawl under the clamping frame to reach the bobbin, or climb up the machine to repair the failure in the upper thread. Therefore, the large clamping frame causes substantial obstacles when operating the embroidery machine.

German patent application DE-A-37 20 907 discloses a shuttle embroidery machine, wherein the two webs are arranged together. In this case, the webs are wound on fabric shafts supported on the embroidery frame of the machine. For the motorized rotation of the fabric shafts individually for winding or for winding the web at the same time, both the upper and lower fabric shafts are optionally coupled to the drive shaft of the motor via a continuous belt. By means of a reversible belt clamping lever located at the free end of the drive shaft, the upper or lower belt can be selectively activated, so that the web can advance or retract. DE-A-37 20 907 does not disclose how the web may be taut or how it may be wound in a taut state.

EP-A-0 148 127 discloses krill for large capacity embroidery machines, where the fabric shafts are joined together by a traction mechanism, so that the fabric shafts can only rotate in a loose state. The motor, which can move freely relative to the krill, functions as a drive to tighten the embroidery fabric wound on the fabric shafts. In each case the front fabric shafts have ratchet-shaped teeth, to which a pivotally attached pawl can engage. In a loose fabric, the rear end of the detent abuts the plate, so that the detent is released from the tooth and the shafts can rotate. In the case of the krill, there is a disadvantage in that it is no longer possible to wind the taut fabric, i.e., a motor disposed between the shafts limits the displacement distance and therefore cannot move from one shaft to another.

It is an object of the present invention to provide a multi-head embroidery machine without the above mentioned disadvantages. In particular, one object is to provide a multi-head embroidery machine having a feature of greater efficiency compared to conventional machines. Another object is to provide a machine with a smaller trace so that wider embroidery grounds can be embroidered compared to conventional multi-head embroidery machines. Another object is to provide a machine with a small trace.

The present invention relates to a multi-head embroidery machine. It comprises at least one embroidery head having a plurality of needle positions. The needle positions can be arranged on the platform or carrier to be displaced 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, in which case a needle may be attached. The needle tappets can move back and forth along the z-direction. In addition, the aforementioned members, as a whole, are referred to as the upper thread unit. The lower thread unit is connected to each embroidery head. The clamping frame is arranged between the upper thread unit and the lower thread unit for ironing the embroidery ground. The clamping frame has two first and second fabric fastening members arranged spaced apart from each other in the y-direction. As is well known, multi-head embroidery machines have a transmission, for example with a central drive shaft, to drive the upper and lower thread units simultaneously.

According to the invention, the object is achieved through an embroidery machine according to the preamble of claim 1, wherein the fabric fastening members are designed as first and second rotating fabric shafts on which the fed fabric is wound. The embroidery machine according to the invention has the main advantage that it requires much less space compared to conventional machines, compared to conventional multi-head multi-needle embroidery sewing machines. The depths of the clamping frame can be reduced due to the fabric shafts being approximately half their original dimensions. Nevertheless, more fabrics can be embroidered because a large fabric surface can be wound around the fabric shafts. Another advantage is that, for example, to replace a thread, the device has greater accessibility and the embroidery ground can be more easily wound because the web is always fixed.

Preferably, the first fabric shaft and the second fabric shaft are coupled to each other via clutch means. The clutch means allows the two fabric shafts to rotate independently of one another and are held together again, so that the fabric tension set once is maintained. The clutch means is designed to fix the fabric shafts relative to each other in any rotational positions. This is realized for example by a free-wheel provided on the fabric shafts. The web arranged on the clamping frame can be taut by the rotation of the shaft. Preferably the two fabric shafts can be joined together by a continuous toothed belt, a continuous chain or a shaft. For convenience, the clutch means or free-wheel have a no load idling position. The location can be used to further wind the web.

According to a preferred embodiment, the first fabric shaft is coupled to the first drive means and the second fabric shaft is coupled to the second drive means. In this case, the first and second drive means can be coupled to one another, preferably by clutch means, or to one another via a free-wheel (over-running clutch). The drive means can be implemented by a chain-drive or belt drive, or drive shafts. The advantage of the mechanical coupling of the two fabric shafts is that the stentered fabric is still movable, unlike the prior art in which clamping frames have been fixed to multi-head multi-needle embroidery machines for decades.

Preferably, the clutch has clutch parts that interact with each other in a positive manner. It is a simple, economical and robust design. A very preferred embodiment suggests that the clutch is designed as a slip clutch. In this case, there is a special advantage if the clutch slips when torque is transmitted in a particular direction of rotation and the clutch does not slip when torque is transmitted in the opposite direction of rotation. This feature is important, for example, when ironing fabrics. For convenience, the clutch parts are formed by clutch teeth arranged in a circle and projecting in the axial direction. In this case, the clutch tooth may have a saw tooth shape and may have a diagonal flank.

Preferably, one of the clutch parts is pre-tensioned to the coupling position by spring means. Combined with the toothed clutch teeth, the result is a simple and effective slip clutch. Preferably, the clutch is arranged on the coupling shaft, and the first clutch part is fixed to the first drive member, for example, the chain wheel or the belt wheel is a chain in which the chain wheel or the belt wheel is arranged thereon, respectively. Engaging the first fabric shaft via a belt or tooth belt, the second clutch part being fixed to the second drive member, for example a chain-wheel or belt wheel arranged with a chain-wheel or belt wheel respectively; The second fabric shaft through a chain-belt or tooth belt. Preferably, the second clutch component is installed on the coupling shaft and thus can move axially and is pre-tensioned to the clutch position by spring means. Preferably, one of the clutch parts is fixed to the coupling shaft.

A very convenient form of embodiment suggests that a connecting means for a hand tool is provided at the end of the fabric shaft and at the end of the coupling shaft. This means that the fabric can be taut without the motor even if the use of the motor is not excluded. With the aid of this connecting means clamped between the fabric shafts, the fabric can be ironed together with the hand tool quickly. For convenience, the clamping frame is arranged substantially horizontally on the platform or the embroidery machine rack.

Preferably, the fabric shafts are provided with profile recesses, and a ironing bar or a small clamping frame can be inserted into the profile recesses. It can be formed by methods well known to those skilled in the art.

Preferably, guide means for the clamping frame are provided such that the clamping frame moves in the x- or y-direction. Furthermore, drive means are preferably provided in combination with the clamping frame such that the clamping frame moves in the x- or y-direction during the embroidery process. The support for the clamping frame as well as the drive means can be carried out as in the prior art.

The preferred embodiment suggests that the clamping device is provided with a plurality of clamping levers spaced apart from each other and pivotally arranged. Such clamping levers can be pivoted from a first position far from the embroidery ground to a second position close to the embroidery ground. The clamping levers can interact directly with the needle plate or clamping block disposed on the needle plate to secure the web. Clamping the web allows the web to wind more. When further wound, the ironed fabric after clamping is suspended in stentering bars. Next, by displacing the clamping frame, the web is unwound from one fabric shaft and wound onto another fabric shaft. In the arrangement of the clamping device, a sensor device can also be provided, whereby the correct embroidery position can be maintained.

The subject of the invention is for a multi-head multi-needle embroidery machine according to the preamble of claim 18, characterized in that the fabric fastening members are designed as first and second free rotating fabric shafts to which the supplied embroidery ground is wound. It is also a clamping frame. Advantageous improvements of the clamping frame are defined in the dependent claims. The clamping frame according to the invention has the advantage that longer webs can be embroidered than conventional clamping frames, which have been used so far with multi-head multi-needle embroidery machines.

Exemplary embodiments of the invention are described below as examples, with reference to the drawings.
1 is a perspective view of a conventional multi-head multi-needle embroidery sewing machine having a plurality of embroidery heads.
2 is a front view of a single embroidery head of a prior art multi-head multi-needle embroidery sewing machine with multiple needle positions.
3 is a partial perspective view of an exemplary embodiment of a clamping frame according to the invention with two fabric shafts joined by a chain drive with a clutch.
4 is an exploded view of the chain drive of FIG. 3 with a clutch;
5 shows the clutch in more detail.
6 is the clutch of FIG. 5 seen from another perspective.
7 is a perspective front view of an embroidery machine according to the invention with a clamping device arranged between two embroidery heads for stentering a web.
8 is a side view of the embroidery machine of FIG.
9 is a schematic illustration of the web being secured, wound and delivered from one shaft to another.
10 is a view of the right side of the clamping frame with side ironing bars.
FIG. 11 is a view having a magazine in FIG. 10.
12 is the clamping frame of FIG. 10 with a magazine attached.
13 is a single segment of the ironing bar.

As shown in FIG. 3, the clamping frame 11 for the fabric has two fabric shafts 13, 15 rotatably arranged on the side part 17. The fabric shafts 13, 15 extend in the axial direction beyond their boundaries and have a profile recess 19 into which an ironing bar can be inserted, although not shown in detail. One edge of the embroidery ground is ironed between the ironing bar and the profile recess 19.

The clamping frame 11 is made for a multi-head multi-needle embroidery machine, and until now conventional clamping frames could not wind the embroidery ground further. For this reason, conventional clamping frames were generally approximately 150 cm deep and wide embroidery grounds could be embroidered. In this case, the clamping frame 11 only needs a depth of 120 cm or less, preferably 100 cm or less, particularly preferably about 80 cm or less, since the embroidery ground can be further wound. Fabric shafts extend over the entire length of the embroidery machine and can be seated on so-called shaft saddles, if desired. The diameter of the fabric shafts may be 120 mm or less, preferably 100 mm or less, particularly preferably 90 mm or less.

Fabric shafts 13, 15 are joined together by first and second chain drives 21, 23 and a clutch 25 arranged between the chain drives 21, 23. The clutch 25 consists of two clutch parts 27, 29 designed as a ring with axially projecting teeth 31 (FIGS. 4 to 6). In this case, the first clutch component 27 is fixed to the first chain wheel 33 of the first chain drive. Preferably, the clutch component 27 and the chain wheel 53 are formed as an integral unit. The second clutch component 29 is fixed to the second chain wheel 35 of the second chain drive 23. Two coil springs 37 for pressing the second clutch component 29 to the clutch position with respect to the first clutch component 27 are arranged between the second chain wheel 35 and the second clutch component 29. Here, the teeth mesh with each other. The clutch component 27 and the chain wheel 33 are rotatably mounted on the coupling shaft 39. The clutch component 29 and the chain wheel 35 can transmit torque by means of connecting means, for example a square-end coupling 39.

As for the conversion lever 41 which engages the 2nd clutch component 29 to the eccentrically formed head 43, the tooth 31 of the 2nd clutch component 29 is the tooth of the 1st clutch component 27. From the chain drive, the chain drives 21, 23 are thus dismantled from each other. In this dismantled position, the fabric shafts 13, 15 can rotate independently of one another, for example the fabric can be wound or unwound. By means of the toothed design of the teeth 31 according to a preferred embodiment, one side has a very steep side, the other side has an oblique side, and the first clutch component 27 slips on the second clutch component 29. If the latter is fixed, the first clutch component 27 can rotate in the direction of the arrow 45. This option can be used if the fabric winding has to be ironed. For this purpose, a connecting means 47, for example a right angle or hexagonal adapter, is provided for the tool at the ends of the coupling shaft 39 and the fabric shaft 13.

Clearly in FIG. 3, the side piece 17 consists of two sides arranged spaced apart from each other and is joined by transverse bars 51. Two chain drives 21, 23 are arranged in the gap 55 formed between the side plate 49 and the base plate 53. The fabric shafts 13, 15 and the coupling shaft 39 are rotatably mounted in a bearing bushing 57 which is fixed in the holes of the side plates 49. Preferably, this side part may be implemented as a unilateral open, tubular bent sheet metal part. Preferably, the side parts may be implemented as a U-shaped sheet metal profile.

As is particularly clear in FIGS. 4 to 6, the chain drives 21, 23 further comprise gear wheels 59, 61, 63, 65 which serve to tighten and rewind the chains 67, 69.

A preferred embodiment of the multi-head multi-needle embroidery machine 70 according to the invention (see FIGS. 7 and 8) is provided with a clamping device 71. By this clamping device 71, the fabric fixed to the clamping frame 11 can be tightened on the needle plate 73, which is located below the embroidery head 75. The clamping device 71 comprises a plurality of clamping levers 77 arranged spaced apart from each other and pivotable by a drive 79 separated from the needle drive in an initial position, the clamping levers 77 having an embroidery plate Pivoted away from 73 to the operating position, the clamping levers 77 secure the taut web within the clamping frame 11. In this case, the needle plates 73 function as opposite supports.

As evident in FIG. 8, the clamping lever 77 is pivotally mounted on the pin 81. A driver, for example a compressed air cylinder, engages one end 83 of the clamping lever 77 and makes the clamping lever 77 pivotable. Preferably, the clamping levers 77 do not fix the fabric directly on the needle plates 73, and an ironing bar 85 is used. The ironing bar 85 is once placed on the needle plates 73 and pressed together with the clamping levers 77 against the needle plates. Needles 87 are provided at opposite ends of the ironing bar 85 and allow the web to be secured to the boundary area. To secure the fabric, only separate clamping levers are needed. A single clamping lever can be provided for three, four or five embroidery heads.

9A shows the fabric shafts 13, 15 and a web 89 fixed therebetween. The needle of the upper thread unit is indicated by reference numeral 91. To secure the web 89, the fabric shafts 13, 15 rotate in opposite directions (arrows 92, 93) until the web 89 is sufficiently taut.

9B shows the fabric shaft 13 with the provision of the fabric 89 to be embroidered. To embroider the fabric, the fabric is fixed between the shafts 13, 15 (FIG. 9C). During the embroidery process, the clamping frame, together with the fabric shafts 13 and 15, moves from left to right until the fixed fabric surface is substantially embroidered (FIG. 9D). The fabric is then pressed by the ironing bar 85 against the needle plates, which restricts the movement of the fabric (see FIGS. 7 and 8). As soon as the fabric is secured in place, the side edges of the fabric can be separated by removing side ironing bars (not shown). The unused fabric can then be further wound by rotating the fabric shafts 13, 15 in the same direction. By moving the clamping frame relative to the embroidery direction, the embroidered fabric is wound on the shaft 15, and the unused fabric is released from the shaft 13 (FIG. 9E). The fabric can then be wound up a little more if necessary and the ironing bar can be removed again. The ironing bar 85 can prevent the fabric around the needles 91 from changing the final position taken with respect to the needle.

Alternatively, sensors can also be used to keep the final embroidery position taken as the fabric is further wound. The sensor, for example, marks a point on the embroidery ground and interacts with the embroidery machine control to ensure the point after the fabric is further wound in the exact same position. In fact, preferably further winding takes place simultaneously as the clamping frame is retracted so that the final embroidery position taken is not changed in relation to the needle.

Thus, the embroidery ground is ironed flat over the entire width, in each case horizontally along the side with the side ironing bar, fixed diagonally in the clamping direction of the shafts, and finally re-swelled in the vertical direction. Become. On the side of the side piece 17 facing the embroidery ground, a guide is provided, for example in the form of a U-shaped guide channel 97, in which a plurality of side ironing bars 99 are fixed. The side ironing bars 99 are arranged displaceably in the guide channel 97. As the fabric is further wound, ie whenever the embroidery ground 89 is wound on the shaft 13, the side ironing bar parts 99 are pushed out of the guide channel. To collect the side ironing bar parts 99, a magazine 101 is preferably attached to the front end of the guide channel 97. With regard to dimensions, the magazine 101 is designed such that all the side ironing bar parts 99 which are pushed out of the guide channel 97 when the fabric is further wound are in its interior space. If the embroidery ground is further wound, the magazine 101 is attached to the rear end of the guide channel 97 by the coupling hoop 103 and the side ironing bar parts are preferably passively pushed into the guide channel. The embroidery ground can then be ironed back laterally by being stuck to the spikes 105 of the side ironing bar parts 99.

Preferably, the side ironing bar parts 99 are parts cast 15 to 40 cm long on the longitudinal edge 107, with a row of spikes 105 arranged (FIG. 11). Guide pins 111 fitted into the guide channel 97 are provided on the opposite longitudinal edge 109.

The multi-head embroidery machine has a plurality of embroidery heads, each embroidery head having a plurality of needle positions. The needle positions can be aligned on the carrier and laterally displaced relative to the embroidery position. Each needle position has, as embroidery-generating members, at least one thread leader, thread guide devices, and a needle arranged on a needle tappet installed to be able to move back and forth in a first direction. The lower thread unit is associated with each embroidery head. The transmission allows the upper and lower thread units to move simultaneously. The clamping frame has two first and second fabric fastening members, preferably horizontally arranged, spaced apart from each other, between the upper thread unit and the lower thread unit for ironing the supporting fabric. These fabric fastening members are designed as first and second rotating fabric shafts, to which the supplied embroidery ground is wound and which can be joined or coupled to one another.

11: clamping frame 13: 1st fabric shaft
15: second fabric shaft 17: side parts of the clamping frame
19: profile recess 21: first chain drive
23: second chain drive 25: clutch
27: first clutch component 29: second clutch component
31 teeth of the clutch parts 33: first chain wheel of the first chain drive
35: second chain wheel of the second chain drive
37: compression spring 39: coupling shaft
41: conversion lever 43: eccentric head
45: arrow (direction of rotation to clamp the fabric)
47: connecting means 49: side plates
51: side bars 53: base plate
55: distance between side plates
57: Bearing bush for fabric shaft and coupling shaft
59, 61, 63, 65: Axial gear wheel
67: chain of the first chain drive 69: chain of the second chain drive
70: multi-head multi-van embroidery machine
71: web clamping device 73: needle plate
75: embroidery head 77: clamping lever
79: Drive for clamping lever 81: Pin
83: upper end of the clamping lever 85: ironing bar
87: needles 89: web, embroidery ground
91: needles 92, 93: arrows
97: guide channel 99: side ironing bar parts
101: magazine 103: coupling hoop
105: spikes on the side ironing parts

Claims (18)

A multi-head embroidery machine having one or more embroidery heads 75 having a plurality of needle positions arranged and aligned in the x-direction relative to the embroidery position, the needle 91 can move back and forth in the z-direction,
Each lower thread unit is combined with an embroidery head 75,
The clamping frame 11 is stentering the embroidery ground 89, aligned between the embroidery head 75 and the lower thread unit,
The two first and second fabric fastening members 13, 15 are aligned at a distance from each other in the y-direction,
Embroidery machine, characterized in that the fabric fastening members are designed with first and second fabric shafts (13, 15) and the supplied embroidery ground (89) is wound around the fabric fastening members. 2. Embroidery machine according to claim 1, characterized in that the first fabric shaft (13) and the second fabric shaft (15) are coupled to each other via clutch means. 3. Embroidery machine according to claim 2, characterized in that the clutch means (25) are designed to fix the fabric shafts (13, 15) relative to each other in any rotational position. 4. The method of claim 1, wherein the first weave shaft 13 is coupled with a first drive means 21, and the second weave shaft 15 is a second drive means 23. And the first and second drive means (21, 23) can be coupled to each other by clutch means. Embroidery machine according to claim 1 or 2, characterized in that the first and second drive means (21, 23) are implemented by a chain-drive, belt drive or drive shaft. 5. Embroidery machine according to claim 4, characterized in that the clutch means (25) are designed as slip clutches and preferably have clutch parts (27, 29) which interact with each other in a positive manner. 7. Embroidery machine according to any one of the preceding claims, wherein the clamping frame is aligned substantially horizontally. 9. The clutch according to claim 2, wherein the clutch means 25 comprises first and second clutch parts 27, 29, are arranged on a coupling shaft 39, and the first The clutch component 27 is fixed to the first drive member 33, and is engaged with the first fabric shaft 13 by a chain 67, a belt or a shaft, and the second clutch component 29 is a second drive. Embroidery machine, which is fixed to the member (35) and is engaged with the second fabric shaft (15) by a chain (69), belt or shaft. 9. Embroidery machine according to claim 8, characterized in that the belt or chain (69) is formed of a continuous belt or continuous chain. 10. The clutch according to claim 8 or 9, wherein one of the clutch parts (27, 29) is arranged to be axially arranged on the coupling shaft (39) and is pre-tensioned to the clutch position by spring means (37). Embroidery machine characterized in that. 11. Embroidery machine according to any of the preceding claims, characterized in that a connecting means for the hand tool is provided at the drive means or at the end of the fabric shafts (13, 15). 12. Embroidery machine according to one of the preceding claims, characterized in that a guide means for the clamping frame is provided to move the clamping frame (11) in the x- and y-directions. 14. Embroidery machine according to any of the preceding claims, characterized in that drive means are provided for engaging the clamping frame (11) such that the clamping frame (11) moves in the x- and y-directions. 14. The clamping device (71) according to any one of the preceding claims, wherein the clamping devices (71) are pivotally aligned at a distance from each other and pivot from a first position remote from the embroidery ground to a second position near the embroidery ground. Embroidery machine comprising a plurality of possible clamping levers (77). The embroidery machine according to any one of claims 1 to 14, wherein a sensor unit is provided to sense the embroidery position. 16. Embroidery machine according to any of the preceding claims, characterized in that it is a multi-head multi-needle embroidery machine having a plurality of embroidery heads (75). A clamping frame for a multi-head embroidery machine having two fabric fastening members aligned at a distance from each other, wherein the fabric fastening members are designed as first and second free rotating fabric shafts 13, 15 to supply supplied embroidery. Clamping frame, characterized in that ground (89) is wound around the fabric fastening members. 19. Clamping frame according to any of claims 2 to 16 or 18.

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