Jewel case zipper sewing equipment

Abstract

The invention relates to the technical field of sewing equipment, and discloses jewel case zipper sewing equipment which comprises a machine body, the machine body is provided with at least two auxiliary parts for cloth and zippers to penetrate through and a switching part for moving the auxiliary parts back and forth, and the auxiliary parts are connected with the switching part. A moving part for pulling the cloth and the zipper to move is arranged on the auxiliary part; the automatic zipper and cloth threading device effectively solves the problem that when an automatic sewing device is used for sewing a zipper and cloth, after a whole zipper and cloth are finished, the sewing machine is shut down, a worker needs to thread the next zipper and cloth in a long time, and the sewing efficiency of the zipper is affected to a certain degree.

Description

Technical Field

[0001] The invention relates to the technical field of sewing equipment, in particular to a jewelry box zipper sewing equipment. Background Art

[0002] A jewelry box, also known as a jewelry box or trinket box, is a container specifically used to store and display jewelry. Jewelry boxes are available in a variety of designs and materials to meet the needs and tastes of different people. Jewelry storage bags can also beautify jewelry and convey information, and are an important part of product packaging in modern marketing activities.

[0003] When a jewelry box with a zipper is being processed and produced, before the zipper is sewn to the jewelry box, in order to enhance the connection stability of the zipper or the zipper and articles such as clothing and bags, and to prevent the zipper or the edge fabric of the zipper from being rolled in, thereby improving the smoothness and durability of use, it is necessary to sew connecting fabrics on both sides of the zipper. At present, when connecting the fabrics on both sides of the zipper, they are all manually sewn and connected through sewing equipment. Most of the sewing equipment is an automatic sewing machine. After the fabric and the zipper are manually placed in the corresponding positions, the sewing machine can drive the zipper and the fabric to be sewn to automatically advance. However, when the worker places the zipper and the fabric in the corresponding positions, it takes a certain amount of time to insert them into the corresponding positions. As a result, after a whole zipper and fabric are completed, the sewing machine must be stopped first, and the worker needs a long time to insert the next zipper and fabric, which will have a certain impact on the sewing efficiency of the zipper. Summary of the invention

[0004] The purpose of the present invention is to solve the problem mentioned in the above-mentioned background technology that when sewing zippers and fabrics by automatic sewing equipment, after the sewing process of a whole zipper and fabric is completed, the sewing machine stops, and the worker needs a long time to insert the next zipper and fabric, which will have a certain impact on the sewing efficiency of the zipper.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A jewelry box zipper sewing device comprises a machine body, on which are provided at least two auxiliary parts for fabrics and zippers to pass through and a switching part for moving the multiple auxiliary parts back and forth, wherein the auxiliary parts are connected to the switching part and the auxiliary parts are provided with a moving part for pulling the fabrics and zippers to move.

[0006] Preferably, the auxiliary component includes a bottom plate, on which an auxiliary plate 1 and two auxiliary plates 2 are provided, the auxiliary plate 1 has a bent protrusion with a guide end, the two auxiliary plates 2 are symmetrically located on both sides of the guide end and above the auxiliary plate 1, the auxiliary plate 1 is provided with a guide slot hole, and both sides of the auxiliary plate 2 are bent upward to form a guide channel, through which the cloth can pass through the auxiliary plate 2, and the auxiliary plate 1 makes the cloth more stable when being pulled and moved, and will not easily deviate during the movement.

[0007] Preferably, a support plate is provided under the auxiliary plate 1, and the support plate is located below the guide slot hole. The zipper can be inserted into the auxiliary plate 1 through the guide slot hole, and the support plate can support the bottom of the zipper, so that the zipper in the auxiliary plate 1 is more stable when it is pulled to move.

[0008] Preferably, an auxiliary wire is connected to the outward end of the auxiliary plate 2, and the auxiliary wire is serpentine. The cloth needs to wrap around and pass through the serpentine auxiliary wire when passing through the auxiliary plate 2. The auxiliary wire can smooth the passing cloth, which can prevent the cloth entering the auxiliary plate 2 from bending and twisting.

[0009] Preferably, the auxiliary plate 2 is hinged to the base plate at one end away from the auxiliary wire, and the auxiliary plate 1 is fixed on the base plate. The auxiliary plate 2 can be rotated upward by being hinged with the base plate, so that when the worker inserts the zipper into the auxiliary plate 1, the worker can first rotate the auxiliary plate 2 to one side, which makes it easier for the worker to insert the zipper into the auxiliary plate 1.

[0010] Preferably, the switching component includes an output device 1, which is fixedly mounted on the machine body via a mounting plate 1, a connecting plate is provided on the output shaft of the output device 1, a movable plate 1 is provided on the connecting plate, the movable plate 1 is connected to the bottom plate on the auxiliary component, a guide plate is provided on the machine body, a slide groove matched with the guide plate is provided on the movable plate 1, the movement of the movable plate 1 is made more stable by the guide plate, the auxiliary component that has been sewn can be removed by the switching component, and the auxiliary component that has been pre-stuck with zippers and fabrics can be moved to the sewing position, which saves the time required for workers to put on fabrics and zippers, thereby effectively improving the sewing efficiency of the sewing equipment.

[0011] Preferably, the moving part includes a positioning frame, a ball screw is rotatably provided in the positioning frame, a ball nut cooperating with the ball screw is provided on the ball screw, a mounting plate 2 is installed on the ball nut, an output device 2 is provided on the mounting plate 2, a dragging part for pressing and moving the cloth and the zipper is provided on the output shaft of the output device 2, the ball screw passes through the positioning frame at one end close to the auxiliary wire and is connected to a transmission part, when the ball screw rotates, the ball nut can move linearly, and the cloth and the zipper can be dragged to the component on the machine body that drives the cloth and the zipper to move for docking through the moving part.

[0012] Preferably, the dragging member also includes a movable plate 2 and a lower pressure plate, a plurality of guide rods and springs are provided on the lower side of the lower pressure plate, the springs are sleeved on the guide rods, a plurality of guide holes matched with the guide rods are provided on the movable plate 2, the guide rods are located in the guide holes, the two ends of the spring are respectively connected to the movable plate 2 and the lower pressure plate, the movable plate 2 is connected to the output shaft of the output device 2, the spring can ensure that the lower pressure plate can have a better pressing force downward, and the cloth and the zipper can be stably dragged through the dragging member.

[0013] Preferably, a plurality of pins for pressing and pulling the fabric and the zipper are provided below the lower pressure plate. When the lower pressure plate is pressed down, the pins can be inserted into the fabric and the chain, so that when the lower pressure plate moves, the fabric and the chain can be better pulled to move.

[0014] Preferably, the transmission member includes a transmission component 1, a transmission component 2, a rack and a transmission tooth, the rack is arranged on the machine body, the transmission tooth is meshed with the rack, the transmission tooth is connected to the transmission component 1 through a cylindrical pin, the transmission tooth can be rotatably connected through the cylindrical pin, the cylindrical pin is fixed under the base plate through a plate body, the transmission component 1 is connected to the transmission component 2, the transmission component 2 is connected to the ball screw, the transmission component 1 and the transmission component 2 are both arranged on the base plate through the plate body, the transmission component 1 and the transmission component 2 are used for power transmission, the transmission tooth is meshed with the rack, so that the gear can rotate when it moves laterally, the rotating transmission tooth can drive the connected transmission component 1, the transmission component 1 drives the transmission component 2 to operate, and then power is transmitted, so that the ball screw can be driven to rotate synchronously.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects: 1. The auxiliary parts provided in the present invention can make the cloth and the zipper move forward more stably and less likely to deviate when the cloth and the zipper are automatically advanced through the automatic feeding device on the sewing device. When the cloth is advanced, the auxiliary wire can pull and stretch the bent and twisted cloth, which can avoid the bending and twisting of the advancing cloth. 2. Furthermore, a switching member and a plurality of auxiliary members are provided, through which the auxiliary members after sewing can be removed, and the auxiliary members with zippers and fabrics put on in advance can be moved to the sewing position, thus saving the time required for workers to put on fabrics and zippers, thereby effectively improving the sewing efficiency of the sewing equipment; 3. Furthermore, through the moving parts and the dragging parts, the cloth and the zipper put on the auxiliary parts can be directly pulled to the parts on the machine body that drive the cloth and the zipper to move for docking, thereby avoiding the sewing equipment from stopping for too long when the workers are inserting the cloth and the zipper, and effectively improving the sewing efficiency of the sewing equipment for the zipper. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A diagram showing the connection between the auxiliary part, the switching part and the moving part of the present invention; Figure 3 This is a structural view of the auxiliary component of the present invention; Figure 4 An exploded view of the auxiliary component structure of the present invention; Figure 5 A cross-sectional view of an auxiliary plate of the present invention; Figure 6 A structural view of a switching member of the present invention; Figure 7 This is a connection diagram of the switching member and the moving member of the present invention; Figure 8 A structural view of the dragging member of the present invention; Fig. 9 A view showing the position of the positioning plate of the present invention on the bottom plate; Fig.10 This is a view of the guide plate and rack of the present invention in the machine body.

[0018] Explanation of the figure numbers: 1. Machine body; 11. Guide plate; 12. Mounting plate 1; 2. Auxiliary parts; 21. Bottom plate; 211. Positioning plate; 22. Auxiliary plate 1; 221. Guide end; 222. Guide slot; 223. Support plate; 23. Auxiliary plate 2; 231. Guide channel; 24. Auxiliary wire; 3. Switching part; 31. Output device 1; 32. Connecting plate; 33. Moving plate 1; 34. Transmission part; 341. Rack; 342. Transmission gear; 343. Transmission component 1; 344. Transmission component 2; 4. Moving part; 41. Positioning frame; 42. Ball screw; 43. Mounting plate 2; 44. Output device 2; 45. Drag part; 451. Moving plate 2; 452. Lower pressure plate; 453. Guide rod; 454. Spring; 455. Pin. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings.

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0023] See also Figure 1-Figure 5 A jewelry box zipper sewing device includes a body 1, on which are provided at least two auxiliary parts 2 for fabrics and zippers to pass through and a switching part 3 for moving the multiple auxiliary parts 2 back and forth, the auxiliary parts 2 are connected to the switching part 3, and the auxiliary parts 2 are provided with a moving part 4 for pulling the fabric and the zipper to move.

[0024] The auxiliary component 2 includes a bottom plate 21, on which an auxiliary plate 1 22 and two auxiliary plates 23 are provided. The auxiliary plate 1 22 has a bent protrusion with a guide end 221, and the two auxiliary plates 23 are symmetrically located on both sides of the guide end 221 and above the auxiliary plate 1 22. The auxiliary plate 1 22 is provided with a guide slot 222, and both sides of the auxiliary plate 23 are bent upward to form a guide channel 231. The cloth can pass through the auxiliary plate 23 through the guide channel 231. The auxiliary plate 1 22 makes the cloth more stable when being pulled and moved, and will not easily deviate during the movement.

[0025] A support plate 223 is provided below the auxiliary plate 22, and the support plate 223 is located below the guide slot 222. The zipper can be inserted into the auxiliary plate 22 through the guide slot 222. The support plate 223 can support the bottom of the zipper, so that the zipper in the auxiliary plate 22 is more stable when being pulled to move.

[0026] An auxiliary wire 24 is connected to the outward end of the auxiliary plate 23. The auxiliary wire 24 is serpentine. The cloth needs to wrap around and pass through the serpentine auxiliary wire 24 when entering the auxiliary plate 23. The auxiliary wire 24 can smooth the passing cloth, which can prevent the cloth entering the auxiliary plate 23 from bending and twisting.

[0027] The auxiliary plate 23 is hinged to the bottom plate 21 at one end away from the auxiliary wire 24, and the auxiliary plate 1 22 is fixed on the bottom plate 21. The auxiliary plate 23 can be rotated upward through the hinge between the bottom plate 21, so that when the worker inserts the zipper into the auxiliary plate 1 22, the auxiliary plate 23 can be rotated to one side first, which makes it easier for the worker to insert the zipper into the auxiliary plate 1 22.

[0028] When in use, the two auxiliary plates 23 above the auxiliary plate 1 22 are rotated and lifted upward, and then the chain is inserted through the guide slot 222 to the top of the support plate 223, and then the auxiliary plate 23 is rotated and lowered, and the fabrics sewn on both sides of the chain are first respectively wrapped around and passed through the auxiliary wires 24 on the two auxiliary plates 23, and inserted into the guide channels 231 on the two auxiliary plates 23, and then the fabric and the zipper are pushed forward continuously, and the fabric and the zipper are pushed to the part on the body 1 that drives the fabric and the zipper to move for docking, and the sewing equipment is running, and the fabric and the zipper are automatically moved forward by the part that drives the fabric and the zipper to move, and the advanced fabric and the zipper are sewn together, and when the fabric is moving forward, the auxiliary wires 24 can pull and stretch the bent and twisted fabric, which can prevent the advancing fabric from bending and twisting.

[0029] See also Figure 6-Figure 10The switching member 3 includes an output device 31. The output device 31 can be an electric cylinder or a pneumatic cylinder in actual use. It is preferred to use an electric cylinder as a driving member for better transmission accuracy and control accuracy. The output device 31 is fixedly mounted on the machine body 1 through a mounting plate 12. A connecting plate 32 is provided on the output shaft of the output device 31. A moving plate 33 is provided on the connecting plate 32. The moving plate 33 is connected to the bottom plate 21 on the auxiliary member 2. A guide plate 11 is provided on the machine body 1. A sliding groove matching the guide plate 11 is provided on the moving plate 33. The guide plate 11 makes the moving plate 33 move more stably. The auxiliary member 2 that has been sewn can be removed through the switching member 3, and the auxiliary member 2 that has been pre-stuck with the zipper and the fabric can be moved to the sewing position, eliminating the time required for workers to put on the fabric and the zipper, thereby effectively improving the sewing efficiency of the sewing equipment.

[0030] The moving part 4 includes a positioning frame 41, in which a ball screw 42 is rotatably arranged, and a ball nut cooperating therewith is arranged on the ball screw 42, and a mounting plate 2 43 is mounted on the ball nut, and an output device 2 44 is arranged on the mounting plate 2 43. The output device 2 44 can be an electric cylinder or a pneumatic cylinder in actual use, and a dragging part 45 for pressing and moving the cloth and the zipper is arranged on the output shaft of the output device 2 44. The end of the ball screw 42 close to the auxiliary wire 24 passes through the positioning frame 41 and is connected to the transmission part 34. When the ball screw 42 rotates, the ball nut can move linearly, and the cloth and the zipper can be dragged to the part on the body 1 that drives the cloth and the zipper to move for docking through the moving part 4.

[0031] The dragging member 45 also includes a movable plate 451 and a lower pressure plate 452. A plurality of guide rods 453 and a spring 454 are provided on the lower side of the lower pressure plate 452. The spring 454 is sleeved on the guide rod 453. The movable plate 451 is provided with a plurality of guide holes adapted to the guide rod 453. The guide rod 453 is in the guide hole. Both ends of the spring 454 are respectively connected to the movable plate 451 and the lower pressure plate 452. The movable plate 451 is connected to the output shaft of the output device 44. The spring 454 can ensure that the lower pressure plate 452 can have a good pressing force downward, and the cloth and the zipper can be stably dragged by the dragging member 45.

[0032] A plurality of pins 455 for pressing and pulling the fabric and the zipper are provided below the lower pressing plate 452. When the lower pressing plate 452 is pressed down, the pins 455 can be inserted into the fabric and the chain, so that when the lower pressing plate 452 moves, the fabric and the chain can be pulled better to move.

[0033] The transmission member 34 includes a transmission component 1 343, a transmission component 2 344, a rack 341 and a transmission tooth 342 (the transmission component 1 343 and the transmission component 2 344 are both belt transmission components when in use, and power is transmitted through the cooperation of gears and toothed belts, which is an existing disclosed technology and will not be described in detail here). The rack 341 is arranged on the body 1, and the transmission tooth 342 is meshed with the rack 341. The transmission tooth 342 is connected to a cylindrical pin through a key, and the cylindrical pin is connected to the transmission component 1 343. A positioning plate 211 is provided under the bottom plate 21, and the cylindrical pin is rotatably connected to the positioning plate 211 through a bearing. When the bottom plate 21 is translated, the transmission The tooth 342 rotates during the translation process due to the engagement with the rack 341, and the rotation of the transmission tooth 342 drives the transmission component to move through the cylindrical pin, the transmission component 1 343 is connected to the transmission component 2 344, the transmission component 2 344 is connected to the ball screw 42, the transmission component 1 343 and the transmission component 2 344 are both arranged on the base plate 21 through the plate body, the transmission component 1 343 and the transmission component 2 344 are used for power transmission, the rotating transmission tooth 342 can drive the connected transmission component 1 343, the transmission component 1 343 drives the transmission component 2 344 to operate, and then the power is transmitted, so that the ball screw 42 can be driven to rotate synchronously.

[0034] When the machine body 1 is automatically advancing and sewing the fabric and zipper on one of the auxiliary parts 2, the worker can put the fabric and zipper to be sewn on the other auxiliary part 2. After the fabric and zipper pass through the auxiliary plate 1 22 and the auxiliary plate 2 23, they are partially passed out. Then the output device 2 44 is started, which can push the movable plate 2 451 to move downward, and push the lower pressing plate 452 to move downward through the spring 454. The pin 455 on the lower pressing plate 452 can move downward and be inserted into the fabric and zipper below. When the fabric and zipper on the auxiliary part 2 being sewn are After sewing, the output device 31 can be started, and the output shaft of the output device 31 drives the movable plate 33 to move through the connecting plate 32. The movable plate 33 can drive the two auxiliary parts 2 to move synchronously, and can remove the sewn auxiliary parts 2, and move the auxiliary parts 2 with zippers and fabrics pre-stitched to the sewing position; when the zippers and fabrics on all the auxiliary parts 2 are sewn, the output device 31 resets and all the auxiliary parts are synchronously reset to the initial position, and the operator completes the installation of zippers and fabrics on all the auxiliary parts 2 again.

[0035] When the two auxiliary parts 2 move, they can respectively drive the transmission gear 342 to move. The moving transmission gear 342 can rotate through the matching relationship with the rack 341. The rotating transmission gear 342 can transmit power through the transmission component 1 343 and the transmission component 2 344, and then drive the ball screw 42 to rotate, so that the ball nut moves in the direction of the component that drives the cloth and the zipper to move on the sewing equipment. The ball nut drives the output device 2 44 to move together through the mounting plate 2 43, and the output device 2 44 drives the lower pressing plate 452 to move through the movable plate 451, and the lower pressing plate 452 can pull the cloth and the zipper to move together through the pin 455 when moving. When the auxiliary part 2 with the zipper and the cloth is inserted moves to the sewing position, the cloth and the chain will be pulled to the part of the machine body 1 that drives the cloth and the zipper to move for docking, and the sewing of the lower chain and the cloth can be carried out directly, thereby avoiding the sewing equipment from stopping for too long when the worker is inserting the cloth and the zipper, and effectively improving the sewing efficiency of the sewing equipment for the zipper.

[0036] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A jewelry box zipper sewing device, characterized in that: The invention comprises a machine body (1), the machine body (1) being provided with at least two auxiliary parts (2) for passing cloth and zippers, and a switching part (3) for moving the plurality of auxiliary parts (2) back and forth, the auxiliary parts (2) being connected to the switching part (3), and the auxiliary parts (2) being provided with a moving part (4) for pulling the cloth and the zipper to move.

2. A jewelry box zipper sewing device according to claim 1, characterized in that: The auxiliary component (2) comprises a bottom plate (21), an auxiliary plate 1 (22) and two auxiliary plates 2 (23) are arranged on the bottom plate (21), a guide end (221) is provided on the bending protrusion of the auxiliary plate 1 (22), the two auxiliary plates 2 (23) are symmetrically located on both sides of the guide end (221) and above the auxiliary plate 1 (22), a guide slot hole (222) is provided on the auxiliary plate 1 (22), and both sides of the auxiliary plate 2 (23) are bent upward to form a guide channel (231).

3. The jewelry box zipper sewing equipment according to claim 2, characterized in that: A support plate (223) is provided below the auxiliary plate 1 (22), and the support plate (223) is located below the guide slot hole (222).

4. The jewelry box zipper sewing equipment according to claim 3, characterized in that: An auxiliary wire (24) is connected to the outward end of the auxiliary plate 2 (23), and the auxiliary wire (24) is in a snake shape.

5. The jewelry box zipper sewing equipment according to claim 4, characterized in that: The auxiliary plate 2 (23) is hinged to the bottom plate (21) at one end away from the auxiliary wire (24), and the auxiliary plate 1 (22) is fixed on the bottom plate (21).

6. The jewelry box zipper sewing equipment according to claim 5, characterized in that: The switching member (3) comprises an output device (31), the output device (31) being fixedly mounted on the machine body (1) via a mounting plate (12), a connecting plate (32) being provided on the output shaft of the output device (31), a moving plate (33) being provided on the connecting plate (32), the moving plate (33) being connected to a bottom plate (21) on the auxiliary member (2), a guide plate (11) being provided on the machine body (1), and a sliding groove matching the guide plate (11) being provided on the moving plate (33).

7. The jewelry box zipper sewing equipment according to claim 6, characterized in that: The moving member (4) comprises a positioning frame (41), a ball screw (42) is rotatably arranged in the positioning frame (41), a ball nut matched with the ball screw (42) is arranged on the ball nut, a second mounting plate (43) is mounted on the ball nut, a second output device (44) is arranged on the second mounting plate (43), a dragging member (45) for pressing and moving the cloth and the zipper is arranged on the output shaft of the second output device (44), and the end of the ball screw (42) close to the auxiliary wire (24) passes through the positioning frame (41) and is connected to a transmission member (34).

8. The jewelry box zipper sewing device according to claim 7, characterized in that: The dragging member (45) further comprises a second movable plate (451) and a lower pressing plate (452), a plurality of guide rods (453) and a spring (454) being arranged on the lower side of the lower pressing plate (452), the spring (454) being sleeved on the guide rod (453), a plurality of guide holes matching the guide rods (453) being arranged on the second movable plate (451), the guide rods (453) being located in the guide holes, the two ends of the spring (454) being respectively connected to the second movable plate (451) and the lower pressing plate (452), and the second movable plate (451) being connected to the output shaft of the second output device (44).

9. The jewelry box zipper sewing device according to claim 8, characterized in that: A plurality of pins (455) for pressing and pulling the fabric and the zipper are arranged below the lower pressing plate (452).

10. The jewelry box zipper sewing equipment according to claim 9, characterized in that: The transmission member (34) comprises a transmission component 1 (343), a transmission component 2 (344), a rack (341) and a transmission tooth (342); the rack (341) is arranged on the machine body (1); the transmission tooth (342) is meshed with the rack (341); the rack (341) is connected to the transmission component 1 (343) via a cylindrical pin; the transmission component 1 (343) is connected to the transmission component 2 (344); the transmission component 2 (344) is connected to the ball screw (42); the transmission component 1 (343) and the transmission component 2 (344) are used for power transmission.

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