Feeding device for zipper sewing machine

Abstract

The utility model discloses a feeding device for a zipper sewing machine, which relates to the technical field of zipper processing and comprises a vertical plate and a hollow rotating shaft rotatably arranged in the vertical plate, trapezoidal blocks are slidably arranged on two sides of the rotating shaft, a tension mechanism positioned in the rotating shaft is arranged between the two trapezoidal blocks, a threaded rod is arranged in one end of the rotating shaft in a threaded manner, and the other end of the rotating shaft is provided with a threaded rod. A circular truncated cone block located in the rotating shaft is fixedly arranged at one end of the threaded rod, and the inclined faces of the two trapezoidal blocks abut against the outer wall of the circular truncated cone block in a matched mode. According to the cloth barrel fixing device, the rocking handle is rocked to enable the threaded rod to rotate to drive the circular truncated cone block to move transversely, and the arc-shaped protrusions can abut against the cloth barrel on the outer side of the rotating shaft after ascending and descending to fix the cloth barrel and the rotating shaft in cooperation with guiding of the inclined face of the trapezoidal block. And the mounting process of the material distribution barrel during feeding can be completed by holding the rotating shaft and shaking the rocking handle, so that the material distribution barrel is more convenient and quicker.

Description

Technical Field

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

[0002] Zippers are connectors that connect or separate items by means of continuously arranged chain teeth. They are now widely used in clothing, bags, tents, etc. When processing zippers, a zipper sewing machine is needed to sew the zipper and the fabric strip together.

[0003] The patent application publication number discloses "a zipper sewing machine, including a frame; a fixed base connected to the frame; a cloth storage member connected to the fixed base; a zipper storage member connected to the frame; a tensioning member connected to the frame; a first driving member connected to the frame; a first conveying member connected to the frame; a cloth rolling member connected to the frame; a second driving member connected to the frame; a sewing part connected to the frame; a first guide member connected to the frame for guiding the front end of the cloth; a second guide member connected to the frame for guiding the sewn cloth. The benefit of the present application is that it provides a zipper sewing machine that automatically tensions and automatically collects cloth."

[0004] With respect to the above-mentioned related technologies, the inventor believes that when loading and installing the fabric barrel, it is necessary to first remove the second rotating shaft from the guide seat, then put the fabric barrel on the second rotating shaft, then put the second rotating shaft into the guide seat, and flip the fixing seat to fix the second rotating shaft, which makes the installation process of loading the fabric barrel more cumbersome and inconvenient. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a feeding device for a zipper sewing machine, and the specific technical solution is as follows:

[0006] A feeding device for a zipper sewing machine comprises a vertical plate and a hollow rotating shaft rotatably arranged in the vertical plate, trapezoidal blocks are slidably arranged on both sides of the rotating shaft, a pulling mechanism located inside the rotating shaft is arranged between the two trapezoidal blocks, a threaded rod is internally threaded at one end of the rotating shaft, a truncated cone block located inside the rotating shaft is fixedly arranged at one end of the threaded rod, the inclined surfaces of the two trapezoidal blocks cooperate and abut with the outer walls of the truncated cone blocks, and a cloth barrel located outside the rotating shaft is arranged on the outer sides of the two trapezoidal blocks.

[0007] By adopting the above technical solution, the handle is shaken to rotate the threaded rod, which can drive the truncated cone block to move horizontally.

[0008] Optionally, a bottom plate is fixedly provided at the bottom of the vertical plate, a bearing is fixedly provided inside the vertical plate, and the rotating shaft is rotatably connected in the bearing.

[0009] By adopting the above technical solution and setting the bearing, the resistance and wear generated when the cloth on the cloth barrel is pulled and the shaft is driven to rotate can be reduced.

[0010] Optionally, limiting holes are provided on both sides of the rotating shaft, one end of the trapezoidal block is slidably connected in the limiting hole, and the pulling mechanism includes a connecting block fixedly arranged on one side of the two trapezoidal blocks and a reset spring fixedly arranged between the two connecting blocks.

[0011] By adopting the above technical solution, under the pulling force of the return spring, the two trapezoidal blocks will be pulled toward the inner side of the rotating shaft.

[0012] Optionally, a threaded hole is opened at the center of one end of the rotating shaft, the threaded rod is threadedly connected in the threaded hole, and a crank is fixedly provided at one end of the threaded rod, and the crank is located outside the rotating shaft.

[0013] By adopting the above technical solution, people can hold the rotating shaft outside the rotating shaft and shake the handle to drive the threaded rod to rotate.

[0014] Optionally, a plurality of evenly distributed arc-shaped protrusions are fixedly provided on one side of the two trapezoidal blocks away from the truncated cone block, the material distribution barrel cooperates and abuts between the outer walls of the plurality of arc-shaped protrusions, and a counterweight ring is fixedly provided on the outer wall of one end of the rotating shaft away from the material distribution barrel.

[0015] By adopting the above technical solution, the counterweight ring can roughly balance the weight on both sides of the vertical plate, thereby improving the stability of the rotating shaft during rotation.

[0016] In summary, the present invention has at least one of the following beneficial effects:

[0017] 1. By shaking the handle, the threaded rod rotates to drive the truncated cone block to move horizontally, and with the guidance of the inclined surface of the trapezoidal block, multiple arc-shaped protrusions can be lifted and moved to support the cloth barrel outside the rotating shaft to fix the cloth barrel and the rotating shaft. Overall, people put the cloth barrel on the rotating shaft, hold the rotating shaft and shake the handle, and the installation process of the cloth barrel loading can be completed, which is more convenient and quick.

[0018] 2. Through the setting of the bearing, the resistance and wear generated when the cloth on the cloth barrel is pulled and the shaft is driven to rotate can be reduced, and the contact area between the arc-shaped protrusion and the cloth barrel is small, which can increase the abutment force of the trapezoidal block on the inner circle of the cloth barrel through the arc-shaped protrusion, thereby improving the stability of the cloth barrel after abutment. The counterweight ring can roughly balance the weight on both sides of the vertical plate, thereby improving the stability of the shaft during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 The utility model Figure 2 A magnified view of the local structure.

[0022] Explanation of the reference numerals: 1. vertical plate; 11. bearing; 12. bottom plate; 2. rotating shaft; 21. limiting hole; 22. threaded hole; 23. counterweight ring; 3. trapezoidal block; 31. arc-shaped protrusion; 32. connecting block; 33. reset spring; 4. cloth barrel; 5. threaded rod; 51. truncated cone block; 52. crank handle. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 The utility model is described in further detail.

[0024] The utility model discloses a feeding device for a zipper sewing machine, referring to Figure 1-2 , including a vertical plate 1 and a hollow rotating shaft 2 rotatably arranged in the vertical plate 1, a bottom plate 12 is fixedly arranged at the bottom of the vertical plate 1, a bearing 11 is fixedly arranged in the vertical plate 1, the rotating shaft 2 is rotatably connected in the bearing 11, the bottom plate 12 can support the vertical plate 1 and other components, the bearing 11 can connect the vertical plate 1 and the rotating shaft 2, and reduce the resistance and wear of the rotating shaft 2 during rotation.

[0025] Reference Figure 1-2 Trapezoidal blocks 3 are slidably provided on both sides of the rotating shaft 2, and limiting holes 21 are provided on both sides of the rotating shaft 2. One end of the trapezoidal block 3 is slidably connected in the limiting hole 21. The limiting hole 21 is adapted to one end of the trapezoidal block 3. The rotating shaft 2 can limit the trapezoidal block 3 through the limiting hole 21, so that the trapezoidal block 3 can only be lifted and lowered.

[0026] Reference Figure 2-3 A pulling mechanism located inside the rotating shaft 2 is provided between the two trapezoidal blocks 3. The pulling mechanism includes a connecting block 32 fixedly provided on one side of the two trapezoidal blocks 3 and a return spring 33 fixedly provided between the two connecting blocks 32. The connecting block 32 can connect the trapezoidal blocks 3 and the return spring 33. Under the pulling force of the return spring 33, the two trapezoidal blocks 3 will be pulled toward the inner side of the rotating shaft 2.

[0027] Reference Figure 2 A threaded rod 5 is provided with an internal thread at one end of the rotating shaft 2, and a threaded hole 22 is opened at the center of one end of the rotating shaft 2. The threaded rod 5 is threadedly connected in the threaded hole 22. The rotating shaft 2 can support and limit the threaded rod 5 through the threaded hole 22, and after the threaded rod 5 rotates, the threaded rod 5 will move laterally under the connection and limitation of the threaded hole 22.

[0028] Reference Figure 2A crank 52 is fixedly provided at one end of the threaded rod 5, and the crank 52 is located outside the rotating shaft 2, so that people can hold the rotating shaft 2 outside the rotating shaft 2 and shake the crank 52 to drive the threaded rod 5 to rotate.

[0029] Reference Figure 2-3 A truncated cone block 51 located inside the rotating shaft 2 is fixed at one end of the threaded rod 5. The inclined surfaces of the two trapezoidal blocks 3 cooperate with the outer wall of the truncated cone block 51. After the truncated cone block 51 moves laterally with the rotating threaded rod 5, it will cooperate with the inclined surface of the trapezoidal block 3 to press the two trapezoidal blocks 3 toward the outside of the rotating shaft 2, so that after the two trapezoidal blocks 3 are pressed and moved and cooperate with the pulling force of the reset spring 33, they can be lifted and lowered on the rotating shaft 2.

[0030] Reference Figure 2-3 A cloth barrel 4 located outside the rotating shaft 2 is provided on the outside of the two trapezoidal blocks 3. A plurality of evenly distributed arc-shaped protrusions 31 are fixedly provided on the side of the two trapezoidal blocks 3 away from the truncated cone block 51. The cloth barrel 4 cooperates and abuts between the outer walls of the plurality of arc-shaped protrusions 31. After the two trapezoidal blocks 3 are pressed toward the outside of the rotating shaft 2, the arc-shaped protrusions 31 will abut against the inner circle of the cloth barrel 4, thereby fixing the cloth barrel 4 and the rotating shaft 2. The cloth barrel 4 is an existing cloth barrel, which is composed of a barrel body and cloth wound on the outside of the barrel body, wherein the arc-shaped protrusions 31 abut against the barrel body of the cloth barrel 4.

[0031] Reference Figure 1-2 A counterweight ring 23 is fixedly provided on the outer wall of one end of the rotating shaft 2 away from the material barrel 4. The counterweight ring 23 can roughly balance the weight on both sides of the vertical plate 1, thereby improving the stability of the rotating shaft 2 during rotation.

[0032] The implementation principle of a feeding device for a zipper sewing machine according to an embodiment of the utility model is as follows:

[0033] When the zipper sewing machine needs to be loaded, the cloth barrel 4 can be placed on the rotating shaft 2, and the arc-shaped protrusion 31 can be located in the inner circle of the cloth barrel 4;

[0034] Then people can hold the rotating shaft 2 to fix the rotating shaft 2, and shake the handle 52 to drive the threaded rod 5 to rotate. After the threaded rod 5 rotates, it will drive the truncated cone block 51 to move horizontally. After the truncated cone block 51 moves, it will cooperate with the inclined surface guide of the trapezoidal block 3 to press the two trapezoidal blocks 3 toward the outside of the rotating shaft 2, and cooperate with the pulling force of the return spring 33 to drive the trapezoidal block 3 and the arc-shaped protrusion 31 to move up and down. After the arc-shaped protrusion 31 moves, it will press against the inner circle of the cloth barrel 4, so as to fix the cloth barrel 4 and the rotating shaft 2.

[0035] Then people can place one end of the cloth wound on the cloth barrel 4 in the zipper sewing machine. The zipper sewing machine will pull the cloth on the cloth barrel 4 when sewing the zipper and the cloth. At this time, due to the traction, the cloth barrel 4 and the rotating shaft 2 will rotate to release the cloth on the cloth barrel 4, thereby continuously feeding the zipper sewing machine.

[0036] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A feeding device for a zipper sewing machine, comprising a vertical plate (1) and a hollow rotating shaft (2) rotatably arranged in the vertical plate (1), characterized in that: Trapezoidal blocks (3) are slidably provided on both sides of the rotating shaft (2), a tension mechanism located inside the rotating shaft (2) is provided between the two trapezoidal blocks (3), a threaded rod (5) is provided with an internal thread at one end of the rotating shaft (2), a truncated cone block (51) located inside the rotating shaft (2) is fixedly provided at one end of the threaded rod (5), the inclined surfaces of the two trapezoidal blocks (3) are in contact with the outer walls of the truncated cone block (51), and a cloth barrel (4) located outside the rotating shaft (2) is provided outside the two trapezoidal blocks (3).

2. A feeding device for a zipper sewing machine according to claim 1, characterized in that: A bottom plate (12) is fixedly provided at the bottom of the vertical plate (1), a bearing (11) is fixedly provided inside the vertical plate (1), and the rotating shaft (2) is rotatably connected inside the bearing (11).

3. A feeding device for a zipper sewing machine according to claim 1, characterized in that: Limiting holes (21) are provided on both sides of the rotating shaft (2), and one end of the trapezoidal block (3) is slidably connected in the limiting hole (21).

4. A feeding device for a zipper sewing machine according to claim 1, characterized in that: The pulling mechanism comprises a connecting block (32) fixedly arranged on one side of the two trapezoidal blocks (3) and a return spring (33) fixedly arranged between the two connecting blocks (32).

5. The feeding device for a zipper sewing machine according to claim 1, characterized in that: A threaded hole (22) is provided at the center of one end of the rotating shaft (2), and the threaded rod (5) is threadedly connected in the threaded hole (22).

6. A feeding device for a zipper sewing machine according to claim 1, characterized in that: A crank handle (52) is fixedly provided at one end of the threaded rod (5), and the crank handle (52) is located outside the rotating shaft (2).

7. A feeding device for a zipper sewing machine according to claim 1, characterized in that: A plurality of evenly distributed arc-shaped protrusions (31) are fixedly provided on one side of the two trapezoidal blocks (3) away from the truncated cone block (51), and the material distributing barrel (4) is fitted and abutted between the outer walls of the plurality of arc-shaped protrusions (31).

8. The feeding device for a zipper sewing machine according to claim 1, characterized in that: A counterweight ring (23) is fixedly provided on the outer wall of one end of the rotating shaft (2) away from the material distributing barrel (4).

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