Threading device for sewing machine

Abstract

The threading device for the sewing machine comprises a sewing machine body and a supporting plate, an installation block is fixedly installed on the side wall of the supporting plate, a first communication groove is formed in the installation block, and a sliding plate is connected into the first communication groove in a sliding mode. A second spring is fixedly connected between the side wall of the sliding plate and the inner side wall of the first communication groove, a mounting slot and a second communication groove are formed in the sliding plate, a wire sleeving mechanism is arranged in the mounting slot, a clamping mechanism is arranged in the second communication groove, a cavity and a third communication groove are formed in the mounting block, a sliding mechanism is arranged in the cavity, and a clamping mechanism is arranged in the third communication groove. And a pressing mechanism is arranged in the third communicating groove. The threading device is reasonable in structural design, through the arrangement of the sliding mechanism and the clamping mechanism, when a worker presses a pressing rod, threading is convenient, meanwhile, through the arrangement of the clamping device, the worker can conveniently disassemble, assemble and replace a sleeve coil, and the threading efficiency of the threading device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine threading, in particular to a threading device for a sewing machine. Background Art

[0002] Sewing machine is an important production equipment in the textile processing process. It can effectively increase the production speed of textiles, improve the production capacity of enterprises, and reduce labor cost waste. It has been widely used and promoted in society. In order to further increase the textile speed, a sewing machine threading device is needed.

[0003] In the prior art, in the process of using the threading device for a sewing machine, the traditional threading device for a sewing machine requires manual operation by the staff, and it is difficult to thread the thin thread horizontally into the eye of the needle. In addition, during the long-term use of the device, the sleeve coil is prone to rust and deformation. However, the traditional sleeve coil is welded to the device, and the disassembly and replacement is cumbersome, which affects the normal use of the device. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that it is difficult to manually thread a thin thread when using a threading device for a sewing machine, and that the sleeve coil is rusted and deformed and difficult to replace. A threading device for a sewing machine is proposed, wherein the arrangement of a sliding mechanism and a clamping mechanism can drive the extrusion slider to move by pressing a pressing rod, thereby driving the sleeve coil to penetrate the needle hole, making threading convenient. At the same time, a clamping device is added inside the device, so that the staff can release the insertion limit of the sleeve coil by displacing the clamping block after the device is used for a long time in actual use, which is convenient for the staff to disassemble and replace, thereby ensuring the threading efficiency of the device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A threading device for a sewing machine comprises a sewing machine body and a support plate, a mounting block is fixedly installed on the side wall of the support plate, a first communicating groove is provided in the mounting block, a slide plate is slidably connected in the first communicating groove, a second spring is fixedly connected between the side wall of the slide plate and the inner side wall of the first communicating groove, a mounting slot and a second communicating groove are provided in the slide plate, a thread sleeve mechanism is provided in the mounting slot, a clamping mechanism is provided in the second communicating groove, an end of the clamping mechanism extends into the thread sleeve mechanism and abuts against the inner side wall thereof, a cavity and a third communicating groove are provided in the mounting block, a sliding mechanism is provided in the cavity, an end of the sliding mechanism extends into the first communicating groove and abuts against the side wall of the slide plate, a pressing mechanism is provided in the third communicating groove, an end of the pressing mechanism extends into the cavity and abuts against the inner side wall of the sliding mechanism.

[0007] Preferably, the wire wrapping mechanism comprises an inserting block slidably connected in the inserting slot, a limit slot is provided on the top of the inserting block, and a side wall of the inserting block extends out of the inserting slot and is fixedly connected with a wrapping coil.

[0008] Preferably, the clamping mechanism includes a pulling rod slidably connected in the second connecting groove, a third spring is fixedly connected between the bottom of the pulling rod and the inner bottom of the second connecting groove, and the end of the pulling rod extends into the limiting groove and abuts against its inner wall.

[0009] Preferably, the sliding mechanism includes an extrusion slider slidably connected in the cavity, one end of the extrusion slider is fixedly connected to an extrusion rod, the end of the extrusion rod extends into the first connecting groove and abuts against the side wall of the slide plate, and a first spring is fixedly connected between the other end of the extrusion slider and the inner wall of the cavity.

[0010] Preferably, the pressing mechanism includes a pressing plate slidably connected in the third connecting groove, a pressing rod is fixedly connected to the top of the pressing plate, the end of the pressing rod extends into the cavity and is tightly pressed against the inner wall of the extrusion slider, and a fourth spring is fixedly connected between the top of the pressing plate and the inner top of the third connecting groove.

[0011] Preferably, the first spring is a tension spring, and the first spring plays a tension role when the extrusion slide block and the extrusion rod are reset.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. Through the setting of the sliding mechanism, the worker can drive the extrusion slider to move by pressing the pressing rod, thereby driving the sleeve coil to penetrate the needle hole, making threading convenient.

[0014] 2. Through the setting of the clamping mechanism, the staff can release the insertion limit of the sleeve coil by displacing the clamp block after the device has been used for a long time in actual use, which is convenient for the staff to disassemble and replace, thereby ensuring the threading efficiency of the device.

[0015] To sum up, the utility model has a reasonable structural design. By arranging a sliding mechanism and a clamping mechanism, the staff can drive the extrusion slider to move by pressing the pressing rod, thereby driving the sleeve coil to pass into the needle hole, making threading convenient. At the same time, through the setting of the clamping device, the staff can release the insertion limit of the sleeve coil by displacing the clamping block after the device has been used for a long time in actual use, which is convenient for the staff to disassemble and replace, thereby ensuring the threading efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a threading device for a sewing machine proposed by the utility model;

[0017] Figure 2 for Figure 1 A in the enlarged view;

[0018] Figure 3 for Figure 1 Enlarged view of point B in .

[0019] In the figure: 1 sewing machine body, 2 first spring, 3 support plate, 4 cavity, 5 extrusion slider, 6 set of coils, 7 mounting block, 8 first connecting groove, 9 second spring, 10 extrusion rod, 11 installation slot, 12 installation block, 13 limit card slot, 14 second connecting groove, 15 pulling card rod, 16 third spring, 17 third connecting groove, 18 pressing plate, 19 fourth spring, 20 pressing rod, 21 slide plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A threading device for a sewing machine comprises a sewing machine body 1 and a support plate 3, a mounting block 7 is fixedly mounted on the side wall of the support plate 3, a first connecting groove 8 is provided in the mounting block 7, a slide plate 21 is slidably connected in the first connecting groove 8, a second spring 9 is fixedly connected between the side wall of the slide plate 21 and the inner side wall of the first connecting groove 8, a mounting slot 11 and a second connecting slot 14 are provided in the slide plate 21, a threading mechanism is provided in the mounting slot 11, the threading mechanism comprises an inserting block 12 slidably connected in the mounting slot 11, a limited position card slot 13 is provided on the top of the inserting block 12, the side wall of the inserting block 12 extends to the outside of the mounting slot 11 and is fixedly connected with a threading coil 6, through the setting of the threading mechanism, the thin wire can vertically enter the threading coil 6, and the threading effect is good;

[0022] The clamping mechanism in the second connecting groove 14, the end of the clamping mechanism extends into the sleeve wire mechanism and is tightly pressed against its inner side wall, the clamping mechanism includes a pulling clamping rod 15 slidably connected in the second connecting groove 14, a third spring 16 is fixedly connected between the bottom of the pulling clamping rod 15 and the inner bottom of the second connecting groove 14, the end of the pulling clamping rod 15 extends into the limit clamping groove 13 and is tightly pressed against its inner side wall, through the setting of the clamping mechanism, the limit installation of the insertion block 12 can be conveniently released by pulling the pulling clamping rod 15, so as to facilitate the disassembly and replacement of the sleeve coil 6 and ensure the threading effect of the thin wire;

[0023] A cavity 4 and a third communicating groove 17 are provided in the mounting block 7. A sliding mechanism is provided in the cavity 4. The end of the sliding mechanism extends into the first communicating groove 8 and abuts against the side wall of the slide plate 21. The sliding mechanism includes an extrusion slider 5 slidably connected in the cavity 4. An extrusion rod 10 is fixedly connected to one end of the extrusion slider 5. The end of the extrusion rod 10 extends into the first communicating groove 8 and abuts against the side wall of the slide plate 21. A first spring 2 is fixedly connected between the other end of the extrusion slider 5 and the inner side wall of the cavity 4.

[0024] A pressing mechanism is provided in the third connecting groove 17, and the end of the pressing mechanism extends into the cavity 4 and is tightly pressed against the inner side wall of the sliding mechanism. The pressing mechanism includes a pressing plate 18 slidably connected in the third connecting groove 17, and a pressing rod 20 is fixedly connected to the top of the pressing plate 18. The end of the pressing rod 20 extends into the cavity 4 and is tightly pressed against the inner side wall of the extrusion slider 5. A fourth spring 19 is fixedly connected between the top of the pressing plate 18 and the inner top of the third connecting groove 17. Through the arrangement of the sliding mechanism and the pressing mechanism, the extrusion slider 5 and the extrusion rod 10 can be driven to move to the left through the displacement of the pressing plate 18 and the pressing rod 20. The extrusion rod 10 displaces the extrusion slide plate 21 and the sleeve coil 6, so that the sleeve coil 6 after sleeved wire is inserted into the needle hole to complete the threading work, which is simple and convenient.

[0025] The functional principle of the utility model can be explained through the following operation modes:

[0026] In the utility model, when the staff uses the utility model, the staff puts the thin wire vertically into the sleeve loop 6, and then presses the pressing plate 18 to complete the threading work of the thin wire, and the pressing plate 18 drives the pressing rod 20 to move upward, and the pressing rod 20 squeezes the squeezing slider 5. The squeezing slider 5 is squeezed and drives the squeezing rod 10 to move to the left. The displacement of the squeezing rod 10 squeezes the sliding plate 21 to move, thereby causing the sliding plate 21 and the sleeve loop 6 to move to the left, so that the sleeve loop 6 on which the thin wire is sleeved passes through the needle hole. Then the staff grabs the thin wire on one side of the needle hole and releases the pressure on the pressing plate 18. The pressing plate 18 drives the pressing rod 20 to reset under the elastic force of the fourth spring 19, and the squeezing slider 5 leaves the squeezing of the pressing rod 20 and drives the squeezing rod 10 to reset under the tensile force of the first spring 2 The sliding plate 21 leaves the pushing of the extrusion rod 10 and drives the sleeve coil 6 to reset under the pulling force of the second spring 9, so that the thin wire remains in the needle hole, and threading is convenient. After the device is used for a long time, the sleeve coil 6 is prone to rust and deformation. The staff can pull the pulling card rod 15. The displacement of the pulling card rod 15 will make the limiting card slot 13 on the insertion block 12 leave the limit of the pulling card rod 15. The staff can remove the insertion block 12 and the sleeve coil 6 for replacement. After the replacement is completed, the staff will reset the insertion block 12 and release the pulling of the pulling card rod 15. The pulling card rod 15 is reset by the pulling force of the third spring 16 and is inserted into the corresponding limiting card slot 13, completing the disassembly and replacement of the sleeve coil 6, effectively preventing the sleeve coil 6 from rusting and deforming, resulting in the inability to insert the thin wire.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A threading device for a sewing machine, comprising a sewing machine body (1) and a support plate (3), characterized in that: A mounting block (7) is fixedly mounted on the side wall of the support plate (3), a first communicating groove (8) is provided in the mounting block (7), a slide plate (21) is slidably connected in the first communicating groove (8), a second spring (9) is fixedly connected between the side wall of the slide plate (21) and the inner side wall of the first communicating groove (8), a mounting slot (11) and a second communicating groove (14) are provided in the slide plate (21), a threading mechanism is provided in the mounting slot (11), and the second communicating groove (14) is provided with a threading mechanism. ) is provided with a clamping mechanism in the casing, the end of which extends into the casing mechanism and abuts against the inner wall thereof, a cavity (4) and a third connecting groove (17) are provided in the mounting block (7), a sliding mechanism is provided in the cavity (4), the end of which extends into the first connecting groove (8) and abuts against the side wall of the slide plate (21), a pressing mechanism is provided in the third connecting groove (17), the end of which extends into the cavity (4) and abuts against the inner wall of the sliding mechanism.

2. A threading device for a sewing machine according to claim 1, characterized in that: The wire-threading mechanism comprises an insertion block (12) slidably connected in an insertion slot (11), a limit slot (13) is provided on the top of the insertion block (12), and a side wall of the insertion block (12) extends outside the insertion slot (11) and is fixedly connected to a coil (6).

3. A threading device for a sewing machine according to claim 2, characterized in that: The clamping mechanism comprises a pulling clamping rod (15) slidably connected in the second connecting groove (14), a third spring (16) is fixedly connected between the bottom of the pulling clamping rod (15) and the inner bottom of the second connecting groove (14), and the end of the pulling clamping rod (15) extends into the limiting clamping groove (13) and is tightly pressed against the inner side wall thereof.

4. A threading device for a sewing machine according to claim 1, characterized in that: The sliding mechanism comprises an extrusion slider (5) slidably connected in the cavity (4); one end of the extrusion slider (5) is fixedly connected to an extrusion rod (10); the end of the extrusion rod (10) extends into the first connecting groove (8) and abuts against the side wall of the slide plate (21); and a first spring (2) is fixedly connected between the other end of the extrusion slider (5) and the inner side wall of the cavity (4).

5. A threading device for a sewing machine according to claim 4, characterized in that: The pressing mechanism comprises a pressing plate (18) slidably connected in the third connecting groove (17); a pressing rod (20) is fixedly connected to the top of the pressing plate (18); an end of the pressing rod (20) extends into the cavity (4) and is tightly pressed against the inner wall of the extrusion slider (5); and a fourth spring (19) is fixedly connected between the top of the pressing plate (18) and the inner top of the third connecting groove (17).

6. A threading device for a sewing machine according to claim 4, characterized in that: The first spring (2) is a tension spring, and the first spring (2) plays a pulling role when the extrusion slide block (5) and the extrusion rod (10) are reset.

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