KR920003672B1 - Fabric press rocking device of embroidery machine - Google Patents

Abstract

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Description

Cloth pressing swing device in embroidery sewing machine

1 is a side view showing the internal structure of this sewing handle embroidery sewing machine provided with a cloth pressing rocking device according to the present invention.

2 is a cross-sectional view showing a relationship between a needle sleeve and a mounting member or a cam member.

Figure 3 is a perspective view showing the disassembled state of the rocking member, rocking lever, ring, the receiving drive.

4 is an external view showing an exploded state of a mounting member, a kiln member, a delivery lever, and the like.

5 is a perspective view showing the configuration of the needle sleeve.

Fig. 6 is a cross-sectional view of a needle sleeve.

7 is a front view showing the state of the distal end of the needle sleeve.

8 is a schematic diagram of a conventional cloth pressing rocking device.

* Explanation of symbols for main parts of the drawings

1: needle sleeve 2: first swing shaft

3: rocking member 4: cloth pressed

5 ring 6: 2nd swing shaft

7: rocking lever 8: delivery lever

9: pin 11: rotating member

12: cam member

The present invention relates to a cloth pressing swing device constituting the cloth sending device of the embroidery sewing machine.

The cloth pressing rocking device of the present sewing handle embroidery sewing machine is known as shown in FIG. Also, rocking means rocking like a pendulum. In FIG. 8, 1 is a normal needle sleeve, and the embroidery thread passes through the inside.

3 is an annular rocking member, and the swing is freely held by the first swing shaft 2 orthogonal to the centerline of the needle rib 1.

In this case, the first swing shaft 2 is attached to the frame of the sewing machine body and is in contact with the needle sleeve 1, the swing member 3, and the swing shaft 2 in a non-contact state.

7 is a swing bar-bar which rotation is supported by the 2nd swing shaft 6 freely, The cloth press 4 is attached to the lower end, and the ring 5 is attached to the center part. In this case, the second swing shaft 6 is perpendicular to the first swing shaft 2. The swing lever 7 is capable of swinging back and forth, ie, in a range of 360 degrees by the second swing shaft 6 and the first swing shaft 2.

The rotary shaft 16 is a rotary shaft provided in parallel with the needle rib 1, and is rotated at the same speed in the same direction as the needle rib 1 by the gears 13,14,15. The mounting member 11 is fixed to the lower portion of the rotary shaft 16, and the delivery lever 8 is freely attached to the mounting member 11 with the pin 9 supported by the pivoting point.

On the other hand, the storage port 10 in which the guide hole 10a was formed is attached to the ring 5 mentioned above. The storage port 10 can be perturbed on the ring 5 (moving in a sliding contact state), and the mounting member 11 is inserted into the guide hole 10a and the ring 5 of the storage port 10, and the delivery lever 8 ), The lower end portion is fitted by the receiving opening 10 and the ring 5. In this case, the inner shape of the guide hole 10a and the ring 5 is larger than the outer shape of the attaching member 11, so that the lower lever of the delivery lever 8 swings left and right in the drawing, the swing lever 7 different from this. Swings left and right in the drawing.

On the rotating shaft 16, the cam member 12 is attached to the upper part of the attaching member 11 so that the up and down movement is free and rotates in the same manner as the rotating shaft 16. The cam member 12 has an inclined surface, and the upper end of the delivery lever 8 is in contact with the inclined surface.

As a result, when the cam member 12 moves up and down, the lower end of the delivery lever 8 moves left and right in the drawing, and therefore the swing lever 7 swings left and right in the drawing. The cam member 12 moves up and down in synchronization with the sewing operation of the embroidery sewing machine, and the swing lever 7 swings in synchronization with the sewing operation of the embroidery sewing machine.

17 is a delivery rotary path. When the manual handle (illustration omitted) is rotated, this delivery rotary path 17 rotates accordingly.

18 and 19 are bevel gears, which transmit the rotation of the delivery rotary path 17 to the needle rib 1.

In this configuration, when the sewing operation is performed by embroidery sewing, the cam member 12 moves up and down, and when the swing lever 7 swings, the cloth pressing 4 reciprocates. When the manual handle is rotated, the rotation shaft 16 rotates, whereby the direction of the reciprocating motion of the cloth pressing 4 changes in correspondence with the amount of rotation of the manual handle.

By the way, in the above conventional structure, the swing lever 7 freely swinged around the center line of the needle rib 1 and the ring 5 arranged at a position far apart from the center line of the needle rib 1 in a horizontal direction; In order to oscillate by the feeding lever 8 or the like, the feeding movement amount of the cloth by the cloth pressing 4 is not the same for all directions of 360 degrees, and is slightly different along the direction, making it impossible to obtain a completely uniform needle stitch. It was.

Therefore, when embroidering a precise pattern, the sewing worker must correct the difference in the dispensing direction and requires skill in operation.

In addition, since it is impossible to zero the back rushes of the gears 13, 14, and 15, the following accuracy decreases the tracking accuracy in the delivery direction, which also hinders the embroidery of a precise pattern. .

Moreover, since the gears 13, 14, 15, and the attachment member, such as the rotating shaft 16 and the shaft rotation, are needed, the whole structure becomes complicated and there also exists a problem of becoming large.

The present invention is to provide a cloth pressing rocking device of embroidery sewing machine that the amount of cloth delivery movement of the pressing of the cloth is the same for all directions of 360 degrees, and easy to carry out precise embroidery and at the same time the structure is simple and compact For the purpose of

In order to achieve the above object, the present invention provides a shaft having a swing member freely swinged up and down by a first swing shaft orthogonal to the centerline of the needle rib, and having a cloth press at the bottom and a ring at the middle. A swing lever provided with support for the upper and lower sides of the needle sleeve in a center line of the needle sleeve and a second swing shaft orthogonal to the axial direction of the first swing shaft, and freely rotated forward, backward, left and right, and the feed lever can be freely rotated with a pin as a support point. One end of the delivery lever is latched on the ring to rotate freely in the ring in the circumferential direction of the ring and to move freely in the radial direction of the ring and the other end of the delivery lever. A cam member which rotates to move the ring in the radial direction with respect to the mounting member, and the mounting member is fitted to the needle sleeve. The cam member is fixedly attached to the needle rib so as to move freely in the axial direction of the needle rib.

The attaching member, which is integrally fixed to the needle sleeve, rotates completely in the fuselage with the needle sleeve. For this reason, the tracking accuracy of the cloth delivery direction is not impaired. Further, the cam member moves along the needle sleeve to rotate the feed lever to the point, and swings the swing lever to the support point through the ring.

Since the attaching member is attached to the needle sleeve as described above, the amount of the soul movement of the cloth due to the press of the cloth does not vary depending on the direction, and is the same for all directions of 360 degrees.

Therefore, it is possible to embroider the pattern precisely without modifying the delivery direction.

1 to 7 show an embodiment of the present invention.

8, the same parts as in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, the attaching member 11 shown in FIG. 4 is attached to the needle sleeve 1 and fixed integrally with the stop screw 20 as shown in FIG. 2 (FIG. 4).

Moreover, the cam member 12 (FIG. 4) is attached to the needle rib 1 freely up and down, and is attached so that it may rotate with the needle rib 1 (FIG. 2).

On the other hand, a ring 5 is attached to the swing lever 7 shown in FIG. 3, and the receiving opening 10 and the bottom plate 21 are attached by the stop screw 22 with the ring 5 interposed therebetween. . As a result, the storage port 10 is freely mounted on the ring 5. Square guide holes 10a and 21a are formed in the storage opening 10 and the bottom plate 21, and transfer grooves 10b and 21b are formed, respectively, as shown in FIG. The lower end 8a of the delivery lever 8 is inserted into these switching grooves 10b and 21b to be stopped between the ring 5 and the storage port 10.

The lower portion 11a of the mounting member 11 is square as shown in FIG. 4, and the lower portion 11a enters into the guide holes 10a and 21a of the receiving opening 10 and the base plate 21. And relatively movable in the radial direction of the ring 5 (see FIG. 2).

As shown in FIG. 4, coil springs 23 and 23 are mounted by members 24 and 24 on both left and right sides of the mounting member 11, and one end 23a, 23a is inserted into the small hole 11b of the mounting member 11, and the other ends 23b and 23b are the small holes 10c, 10c, and 21c of the receiving opening 10 and the base plate 21, respectively. ), 21c (FIG. 3). Thereby, the spring force acts so that the lower end 8a of the delivery lever 8 shown in FIG. 2 may be separated from the needle sleeve 1. In addition, in the upper part of the cam member 12 of FIG. 4, the engaging groove 12a is formed along the circumferential direction, and in the lower part of this engaging hole 12a, the vertical groove which made the base surface into the cam surface 12b ( 12c) is formed in the vertical direction. The upper end 8b of the delivery lever 8 abuts on the vertical groove 12c of the cam member 12, and the locking groove of the upper and lower members 26 is provided on the locking groove 12a of the cam member 12. (26a) is fitted. The upper and lower members 26 move up and down in synchronization with the sewing operation of the needle rib 1, whereby the cam member 12 moves up and down in synchronization with the sewing operation. In addition, the conversion spring 27 shown in FIG. 1 is for returning the upper and lower members 26 upward.

Next, the manual handle 29 shown in FIG. 1 is for rotating the needle sleeve 1, and when the manual handle 29 is rotated, the handle shaft 30 rotates, and this rotation is the bevel gear 31. ), (32), transmission shaft 33, bevel gear 34 (it is folded to bevel gear 32 in Figure 1) bevel gear 35, transmission shaft 36, bevel gear 37, (38) It is transmitted to the delivery rotary path 17 through the delivery rotary shaft 39, the bevel gears 40, 41.

When the delivery rotary path 17 rotates, the needle rib 1 is driven to rotate through the bevel gears 18 and 19 shown in FIG.

In the above structure, when the up-and-down member 26 (FIG. 4) which moves up and down in synchronization with the sewing operation of the needle sleeve 1 descends, the cam member 12 is pushed down along the needle sleeve 1 and sent out. Pressing by the cam surface 12b of the upper end 8b of the lever 8, the delivery lever 8 of FIG. 2 rotates the pin 9 counterclockwise to the point, and the receiving opening 10 and the base plate 21 are rotated. And the ring 5 is pushed left and right in FIG. 2 to face the elasticity of the coil spring 23. This causes the rocking lever 7 to move the first and second rocking shafts 2 and 6 (FIG. 3) to a point, and the fabric has a cloth press 4 in the direction in which the ring 5 is pressed. Transfer.

Next, when the upper and lower parts 26 are raised, the cam member 12 is raised and the lower end of the delivery lever 8 is moved to the left side in FIG. 2 by the force of the coil spring 23, and returns to its original state.

Moreover, when changing the cloth pressing direction, the handle shaft 30 is rotated by the handle 29. Rotation of the handle shaft 30 is transmitted to the needle rib 1 through the bevel gear 31, the mounting member 11, the cam member 12 attached to the needle rib 1 and the needle rib 1, The delivery lever 8 rotates corresponding to the rotation angle and the rotation direction of the handle shaft 30. The cloth pressing direction changes in correspondence with the rotation angle of the mounting member 11 or the like.

In addition, although the cloth press 4 actually sends the cloth by the rocking action of the rocking lever 7 and the up and down action, the up and down action of the cloth press 4 and the sewing operation of the needle rib 1 are the same as in the prior art. Do.

Next, Figs. 5 to 7 are diagrams showing the structure of the needle rib 1, in which 51 is a pipe.

The pipe 51 is formed in a circular cross section, and the bracket 52 is mounted on the upper end thereof, and the mounting portion 51a is formed on the lower end by the cutting groove of the pipe 51. The mounting portion 51a mounts the needle support 53, has a U-shaped cross section, and protrudes in the axial direction of the pipe 51. The needle support 53 is fixed to the needle 54 by aligning the longitudinal direction of the needle 54 with the axial direction of the pipe 51, and attaches the mounting screw 55 to the rear surface thereof and tightens the screw to the surface ( 56 is provided, respectively, and the guide piece 57 is provided in the upper part.

The mounting screw 55 is inserted into the small hole 51b installed in the mounting portion 51a, tightened with the nut 58, and the needle support 53 is fixed to the mounting portion 51a. In addition, the tightening screw 56 fixes the needle 54 inserted into the insertion hole (not shown) formed in the needle support 53 to the needle support 53 by tightening the nut 59.

In the mounting state of the needle support 53 to the mounting portion 51a, between the surface (outer surface) of the needle support 53 provided with the tightening screw 56 and the lower edge portion 51c which is inclined to the pipe 51. An outlet h (see FIG. 7) is formed in the opening.

The guide piece 57 guides the cord b to the outlet port h, and is inclined from the inner surface of the pipe 51 on the mounting portion 51a side to the outer surface of the needle support 53.

Inside the pipe 51, the pipe 51 in a state in which the guide tubes 60 and 60 of the upper thread a face each other at intervals of 180 degrees from the upper end of the pipe 51 to the lower edge 51c. It is attached to the inner surface of the The inside of the pipe 51 serves as the guide passage t of the decorative string b.

In such a structure, the pipe 51 attaches the needle 54 to the attachment part 51a with the needle support body 53, and it mounts and uses it for embroidery sewing machines conventionally. And, the upper thread (A) is sent to the guide tube 60 to the needle (54), and the cord (B) enters the guide passage (T), is withdrawn from the outlet (H), but is sent to the sealing place This is also the same as before. In the needle sleeve 1, the guide passage T of the cord B is formed in the center of the pipe 15, and since its effective cross sectional area is wide, the movement resistance of the cord B is reduced. The strap (B) is smoothly sent to the sealing place.

In addition, since the guide pin 57 provided on the needle support 53 guides the cord B to the outside from the outlet H, the lead pin 57 is also smoothly pulled out from the outlet H. Therefore, it can be embroidered smoothly without any trouble. In addition, the operation performance of the manual handle 29 for changing the embroidery direction is also good.

In addition, although the needle support 53 of the figure is for one needle, only one needle 54 can be mounted, but the needle support for two needles is attached to the mounting part 51a, and the two needles 54 are piped. It can be attached to (51). In the embodiment of the figure, the upper thread A is inserted into one of the guide tubes 60 on either side. When the two needles 54 are attached to the pipe 51, the upper threads A and A are inserted through the guide tubes 60 and 60 on both sides.

In the case of mounting the two upper thread guide tubes 60 and 60 to the pipe 51, as shown in the embodiment of the drawing, the upper thread guides are usually installed to face each other at intervals of 180 degrees. The pipes 60 and 60 may be installed adjacent to each other at suitable intervals.

As described above, the cloth pressing swing device in the embroidery sewing machine according to the present invention has the advantage that the tracking accuracy in the cloth feeding direction is not impaired, and the amount of the cloth feeding movement caused by the cloth pressing does not vary depending on the direction. This has the advantage of being equal for all directions of 360 degrees. Therefore, it is possible to embroider the pattern precisely without correcting the difference in the sending direction. In addition, since there is no need to install the rotary shaft and gears separately, the overall structure is simplified, and the advantage of being compact can be obtained.

Moreover, according to the needle sleeve according to the present invention, there is an advantage that the movement resistance of the cord is small and the cord is smoothly sent out to the sealing place. In addition, since the guide piece provided on the needle support guides the cord from the outlet to the outside, the lead strip can be smoothly pulled out from the outlet of the cord, so that it can be embroidered smoothly without any trouble. In addition, the operation performance of the manual handle for changing the embroidery direction is also good.

Claims (2)

A rocking member freely swinged at a point of the first swing shaft orthogonal to the center line of the needle rib, and a cloth press at the lower end and a ring at the middle part, respectively, and an axial direction is formed at the center line of the needle rib and the first yaw. A rocking lever, supported by a second rocking shaft orthogonal to the axial direction of the coaxial axis, freely swinging forward, backward, left, and right, and a rotation lever freely rotated to a pin point, and one end of the delivery lever The mounting member is freely rotatably inserted in the ring in the circumferential direction of the ring and relatively freely moved in the radial direction of the ring, and the other end of the feeding lever is pressed to rotate the feeding vera to the point. And a cam member for moving the ring in the radial direction with respect to the member, wherein the mounting member is fitted to the needle sleeve to be fixed. And the cam member is provided on the needle rib freely moveable in the axial direction of the needle rib. The needle support according to claim 1, wherein the needle rib has a mounting portion protruding in the axial direction of the pipe at one end of the pipe, and the mounting portion has a needle support in which the needle is fixed in accordance with the axial direction of the pipe. A cloth pressing rocking device comprising: an outlet opening formed between the outer surface of the needle support and the edge of the pipe; and an upper thread guide path for guiding the upper thread is provided in the pipe.

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