TWI444516B - Shuttle embroidery machine - Google Patents

Description

Shuttle embroidery machine

The present invention relates to a shuttle embroidery machine or a stitching machine having a drive beam having a drive to move the shuttle back and forth.

The shuttle embroidery machine (Schiffchenstickmaschine, English: shuttle embroidery machine) operates according to the double needle system, in other words, has a needle thread and a shuttle thread, wherein the needle thread is entangled with the thread at each stitch (Stich). One with a hole in the eye ( The needle of hr, English: eyelet) transports the needle thread through the cloth, wherein the thread forms a loop when the needle comes back (Schlaufe). Then the shuttle (which contains the shuttle line) passes through this loop. In general, an embroidery machine or a stitching machine has a large number of embroidery positions and correspondingly has a plurality of needles and shuttles. There is a so-called Treiberlineal (drive beam) or the like for moving the shuttle back and forth. In modern embroidery machines, the drive beam consists of a bead. The model has holes, and a drive pin and an upper drive pin are embedded in the holes for each embroidery position. These drive pins are used to cause the shuttle to move up and down on the inclined running surface of the shuttle track. In the case of stitchbonding machines, the shuttle track is generally horizontal. In the case of an embroidery machine and a stitching machine, the front stitch board guides the shuttle side on one side, and the rear stitch board guides the shuttle side on the other side.

In recent years, the working speed of the shuttle embroidery machine has been greatly improved. With some machines working at 600 stitches per second (Stich) or higher. However, the Abrieb is found to increase in the shuttle. If we know that the shuttle is accelerating with accelerations as high as 5G, it is not surprising that this scraping is possible. At high speeds, you can also see the noise emitted from the shuttle area (L Rm) also improved.

It is therefore an object of the present invention to prevent scratching on the shuttle and to minimize noise from the shuttle region.

According to the invention, this object is achieved in the case of a shuttle embroidery machine or a stitching machine by means of a guiding element for guiding the shuttle, which is run with the shuttle as it moves back and forth. Motivator.

Since the guiding element runs with the shuttle, there is no relative movement between the shuttle and the guiding element, so that no scratching occurs on the side of the shuttle. Unexpectedly, the use of guiding elements also greatly reduces noise.

The guiding element should preferably be fixed to the drive beam. However, the guiding element can also be moved by means of another drive.

The shuttle should be guided on both sides. For this purpose, the guiding element encloses the shuttle with a gap between them. However, the facts show that if the guiding element guides the shuttle only on the side of the drive beam, the scratching has been greatly reduced. This guidance has the advantage that the existing machine can be easily retrofitted. To be retrofitted, it is only necessary to mount a piece of guiding element on the drive. The guide preferably has a bombier contact surface for guiding the shuttle. To achieve such a fixation, the guiding element can have a through hole for the wire to be secured for attachment to the drive beam. Preferably, the guiding element also has at least one peg that can be inserted into a hole of the drive beam. The design of such a guiding element makes the fixing simple.

Embodiments of the invention are described in conjunction with the drawings.

The invention is applicable not only to new machines, but also to the addition of both machines at a small cost. Therefore, Figures 1 to 3 also show how existing machines can be modified. The old part (Stöckli) (11) has a plurality of shuttle tracks (13) in a conventional manner for the shuttle (15) to run. Figure number (17) indicates the front stitch board. The rear stitch plate (19) is no longer needed. However, it can be left in the machine when the invention is installed. The drive beam (21) moving up and down can be in any configuration. The illustrated drive beam is constructed as described in EP 1 055 761. It consists of a strip (23) with holes. A drive pin (25) (27) is embedded in the hole. For each shuttle (15), a guiding element (31) is fixed to the drive beam (21) by means of screws (29). With this guiding element (31), in this embodiment of the invention, the shuttle (15) is guided on the side of the drive. The guiding element (31) is designed in the form of a block and is preferably made of plastic. The guiding element (31) has a bombiert contact surface (33) for lateral guidance of the shuttle (15). The guiding element (31) has a through hole (34) for the screw (29) to pass through, and has two bolts (37) which are embedded in the holes (39) of the driving beam (21) and are used for guiding elements (31). ) Relative to the shuttle (15) in the correct position.

When the machine is in operation, the guiding element (31) is driven by the drive beam (21) to be synchronized with the drive (25) (27), the drive drives the shuttle (15), so the shuttle (15) and the guiding element (31) There is a relative movement between them. In the embodiment of the invention described, the shuttle (15) slides along the stitching plate (17) on the side of the needle, but in practical terms, a guiding element (31) that runs together Guide the shuttle (15) on only one side] It can greatly reduce the scratch of the shuttle.

As mentioned above, with the above measures, the rear stitch plate (19) becomes redundant, and the rear stitch plate is expensive to manufacture. The guiding element (31) is much cheaper in manufacturing the piece. Therefore, the invention can also reduce its cost for a novel machine.

4 to 6 show another embodiment of the present invention. The shuttle (15) is guided on both sides by the guiding element (31'). The shuttle (15) is looped by the guiding element (31') with a few gaps therebetween. In addition, the design of the guiding member (31') is the same as that of the guiding member (31) of Figs. 1 to 3, and it can also be fixed to the driving beam (21) by a screw (29) (not shown). Where the plug (37) is embedded in the hole of the drive beam (21).

In summary, a shuttle embroidery machine of the present invention has a drive beam (21) having a driver (25) (27) for moving the shuttle (15) back and forth. A guiding element (31) is fixed on the drive beam (21) to guide the shuttle (15). Since the guiding member (31) runs together with the shuttle (15), there is no friction between the guiding member (31) and the shuttle (15), so the scratch on the shuttle is greatly reduced. The rear stitch plate (19) is no longer needed. However, it can be left in the machine when it is installed.

(11). . . Old part

(13). . . Shuttle track

(15). . . Shuttle

(17). . . Front stitch board

(19). . . Rear stitch board

(twenty one). . . Drive beam

(twenty three). . . Profile

(25) (27). . . Drive nail

(29). . . Screw

(31) (31’). . . Guiding element

(33). . . Contact surfaces

(34). . . Through hole

(37). . . bolt

(39). . . hole

Figure 1 is the old part with fixed position (St Ckli) and a side view of the drive beam moving up and down, having a guiding element fixed thereon for guiding the shuttle side, FIG. 2 is a perspective view of the old part of FIG. 1, FIG. 3 is FIG. Figure 2 is a rear view of the old part, but the drive beam is removed, but the guiding element and the driver are still visible, Figure 4 is a view similar to Figure 2, but the guiding element is another embodiment, Figure 5 is a The top view shows the shape of the guiding element, and Fig. 6 is a perspective view of the guiding track for the shuttle and a perspective view of the guiding elements of Figs. 4 and 5.

(11). . . Old part

(13). . . Shuttle track

(17). . . Front stitch board

(19). . . Rear stitch board

(twenty one). . . Drive beam

(twenty three). . . Profile

(25). . . Drive nail

(27). . . Drive nail

(31). . . Guiding element

(39). . . hole

Claims (10)

A shuttle embroidery machine having a drive beam (21) having a driver (25) (27) for moving the shuttle (15) back and forth, characterized by: a guiding element (31) ( 31'), running with the shuttle (15) while the shuttle (15) is moving back and forth. A shuttle embroidery machine according to claim 1, wherein the guiding member (31) (31') is provided on the driving beam (21). The shuttle embroidery machine of claim 1, wherein the guiding member (31) (31') is movable by a driving device to run together with the shuttle (15). A shuttle embroidery machine according to claim 1 or 2, wherein the guiding member (31) (31') has a curved contact surface (33) for guiding the shuttle (15). A shuttle embroidery machine according to claim 1 or 2, wherein the guiding member (31) (31') has a through opening (34) for fixing to the driving beam (21) by a screw (29). on. A shuttle embroidery machine according to claim 1 or 2, wherein the guiding member (31) (31') has at least one bolt (37) embedded in a hole in the driving beam. A shuttle embroidery machine according to claim 1 or 2, wherein the guiding member (31) is in the form of a block. For example, the shuttle embroidery machine of claim 1 or 2, wherein the guiding member (31) guides the shuttle (15) on the side of the drive beam. For example, the shuttle embroidery machine of claim 1 or 2, wherein: The guiding element (31) (31') guides both sides of the shuttle (15). For example, the shuttle embroidery machine of claim 4, wherein the guiding member (31) (31') encloses the shuttle in an arc shape with a gap therebetween.