Badminton racket drilling device

Abstract

The present invention discloses a badminton racket drilling device, specifically relates to the technical field of drilling devices, including a mounting plate, a positioning assembly for fixing a badminton racket is provided on the front side of the mounting plate, and a hole opening assembly for drilling holes in the badminton racket is provided on the top of the positioning assembly; the positioning assembly includes an electromagnetic plate installed on the rear side of the mounting plate, and movable parts are provided on the top and bottom of the electromagnetic plate. The present invention can drive the positioning piece on the movable part to move inward by energizing the electromagnetic plate to contract the spring, so as to facilitate the staff to take and put the badminton racket, and then cut off the power of the electromagnetic plate so that the spring can rebound and push the positioning piece on the movable part to move outward, thereby allowing multiple positioning pieces to squeeze and fix the badminton racket from the inside to the outside, avoiding the badminton racket from shaking, and the positioning method is simple and fast, which can effectively improve the operating efficiency of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of drilling devices, and more specifically to a badminton racket drilling device. Background Art

[0002] A badminton racket is generally composed of a racket head, a racket shaft, a racket handle and the joint between the racket frame and the racket shaft. The length of a racket does not exceed 68 cm, of which the length of the racket handle and the racket shaft does not exceed 42 cm, the length of the racket frame does not exceed 25 cm, and the width is 20 cm. With the development of science and technology, the development of rackets is moving towards the direction of lighter weight, harder frames, better elasticity of the racket shaft and smaller air resistance.

[0003] The mesh cable on the head of a badminton racket is an important factor in determining the quality of the racket, so the through hole for threading the mesh cable is particularly important. The accuracy of the through hole position will directly affect the quality of the entire badminton racket.

[0004] As shown in the application document with the prior art publication number CN213729474U, it includes a base and a drilling assembly; a side plate is provided on the upper surface of the base; an arc-shaped support block is fixed on one side of the side plate; a pair of sliders are movably matched above the arc-shaped support block; a cross plate is clamped between the pair of sliders; a pair of limit assemblies are fixed below the arc-shaped support block; an electric lifting rod is fixed on the other side of the side plate; a connecting plate is fixed at the telescopic end of the electric lifting rod; a drilling assembly is provided at the end of the connecting plate; a pair of through grooves are opened above the arc-shaped support block; a spring A is fixedly connected to the top of the inner wall of the through groove. This technical solution solves the problem that the existing badminton racket is easy to loosen when drilling, thereby causing the drilling to be offset and affecting the quality of the badminton racket through the functions of the base, the drilling assembly, the arc-shaped support block, the slider, the limit assembly and the cross plate.

[0005] However, when fixing the badminton racket in the above technical solution, the staff needs to move the limit rod and the sleeve in sequence, which is complicated and increases the workload of the staff, thereby affecting the efficiency of the staff in disassembling and assembling the badminton racket. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a badminton racket drilling device, which can drive the positioning piece on the movable part to move inward by energizing the electromagnetic plate to contract the spring, so as to facilitate the staff to take and put the badminton racket. After that, the electromagnetic plate is powered off, so that the spring can rebound and push the positioning piece on the movable part to move outward, thereby allowing multiple positioning pieces to squeeze and fix the badminton racket from the inside to the outside, avoiding the badminton racket from shaking. The positioning method is simple and quick, which can effectively improve the operating efficiency of the staff, so as to solve the problems arising from the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a badminton racket drilling device, comprising a mounting plate, a positioning assembly for fixing the badminton racket is provided on the front side of the mounting plate, and a hole opening assembly for drilling the badminton racket is provided on the top of the positioning assembly;

[0008] The positioning assembly includes an electromagnetic plate installed on the rear side of the mounting plate, movable parts are provided at the top and bottom of the electromagnetic plate, two telescopic rods are installed between the movable part and the electromagnetic plate, a spring is sleeved on the outside of the telescopic rod, and the top and bottom ends of the spring are respectively fixed to the electromagnetic plate and the side close to the movable part, and positioning parts are installed at the front sides of both ends of each movable part, and the two corresponding positioning parts above and below are distributed in mirror symmetry;

[0009] A card plate is provided on the front side of the mounting plate, the card plate is located on the side away from the two movable parts, and a hole is opened inside the card plate located on the top of the mounting plate, and the positioning member is arranged between the two card plates;

[0010] A drainage frame is installed on the front side of the mounting plate, and the drainage frame is located at the bottom of the card plate with holes. Two fixing holes are arranged on the front side of the bottom end of the drainage frame, and fixing parts are arranged inside the fixing holes; a slag collecting box is provided at the bottom of the drainage frame, and one end of the fixing part away from the drainage frame is fixed to the front side of the slag collecting box. Through the setting of the drainage frame, the debris generated when the badminton racket is drilled can be guided into the slag collecting box, so that the debris can be collected easily, the debris can be avoided from being scattered and the workload of the staff in subsequent handling of the debris can be increased, and the convenience of the staff in handling the debris can be improved.

[0011] In a preferred embodiment, the hole-opening component includes a mounting hole opened on the top of the mounting plate, a mounting piece is provided inside the mounting hole, and a drilling component is embedded in the front side of the mounting piece; electric push rods are installed at the bottom of both ends of the mounting piece, and the bottom end of the electric push rod is fixed to the bottom of the inner cavity of the mounting hole. The mounting piece is driven up and down by the electric push rod, so that the drilling component can be operated to drill holes in the badminton racket, thereby achieving the purpose of convenient processing of the badminton racket by the staff.

[0012] In a preferred embodiment, a movable hole is opened on one side of the mounting plate close to the positioning member, and the positioning member is arranged inside the movable hole. The setting of the movable hole can provide movement space for the positioning member, thereby ensuring that the positioning member limits and fixes the badminton racket.

[0013] In a preferred embodiment, a limiting plate is provided at the bottom of the clamping plate located at the front side of the bottom end of the mounting plate. By setting the limiting plate, the bottom of the badminton racket can be limited and supported to ensure the stability of the badminton racket.

[0014] In a preferred embodiment, a protective shell is provided on the outside of the electromagnetic plate, the front end of the protective shell is fixed together with the rear side of the mounting plate, and the protective shell is provided on the outside of multiple telescopic rods and multiple springs. Through the provision of the protective shell, the electromagnetic plate can be shielded and protected to prevent damage to the electromagnetic plate caused by external collision and impact, and to prevent the adhesion of impurities such as dust from affecting the performance of the electromagnetic plate.

[0015] In a preferred embodiment, the cross section of the positioning member is set to be L-shaped. By setting the cross section of the positioning member to be L-shaped, the positioning member can fix and limit the outside of the badminton racket, thereby ensuring the stability of the badminton racket during processing.

[0016] In a preferred embodiment, the inner walls on both sides of the mounting hole are provided with sliding grooves, and a slider is provided inside each sliding groove. The end of the slider away from the sliding groove is fixed to the mounting piece. Through the cooperation of the slider and the sliding groove, the movement of the mounting piece can be limited, thereby ensuring the stability of the mounting piece when driving the drilling assembly to move.

[0017] In a preferred embodiment, two supporting feet are installed at the bottom of the mounting plate, and the two supporting feet are symmetrically distributed about the central axis of the mounting plate. By setting the supporting feet, the contact area between the mounting plate and the ground can be expanded, thereby supporting and fixing the mounting plate to ensure the stability of the mounting plate.

[0018] In a preferred embodiment, two support members are installed on the front side of the mounting plate, a threaded rod movably connected by a bearing is installed between the two support members, and the threads at both ends of the threaded rod are in opposite directions, and the two ends of the threaded rod are externally threadedly connected to a support seat, a toothed plate is installed at the front end of the support seat, a support shaft is provided on the front side of the end of the toothed plate away from the support seat, and the top and bottom ends of the support shaft are both provided with a cross plate for connecting the mounting plate, and the top and bottom ends of the support shaft are respectively movably connected to the two cross plates through bearings, and the external fixed sleeve of the support shaft is provided with a pressing piece with an L-shaped cross section, and a gear is provided inside the end of the pressing piece close to the mounting plate. The gear fixing sleeve is arranged on the outside of the support shaft; a micro motor is installed on the side of one of the support members away from the threaded rod, and the output shaft of the micro motor passes through the support member and is fixed to the threaded rod. The threaded rod is driven to rotate by the micro motor, and the threaded rod drives the two support seats to move inward synchronously, and the support seat drives the corresponding tooth plate and gear transmission, thereby making it possible for the teeth to drive the pressure piece on the support shaft to flip outward, thereby achieving the effect of squeezing and fixing the outside of both ends of the racket. When the support seat drives the tooth plate to move outward, the gear meshing with the tooth plate drives the support shaft to flip inward, so that the pressure piece is separated from the racket, making it convenient for the staff to take and put the racket.

[0019] Technical effects and advantages of the present invention:

[0020] The electromagnetic plate is energized to contract the spring, thereby driving the positioning piece on the movable part to move inward, so as to facilitate the staff to take and put the badminton racket. After that, the electromagnetic plate is powered off, so that the spring can rebound and push the positioning piece on the movable part to move outward, thereby allowing multiple positioning pieces to squeeze and fix the badminton racket from the inside to the outside, avoiding the badminton racket from shaking. The positioning method is simple and quick, which can effectively improve the operating efficiency of the staff.

[0021] The debris is guided to the slag collecting box for storage by the drainage frame, so as to facilitate the collection and treatment of the debris. The engagement of the fixing piece with the fixing hole can facilitate the staff to disassemble and install the slag collecting box, thereby improving the convenience of the staff to handle the debris.

[0022] The threaded rod is driven to rotate by a micro motor, and the threaded rod then drives the two support seats to move inward synchronously. The support seats then drive the corresponding toothed plates and gear transmissions, thereby allowing the teeth to drive the pressure pieces on the support shaft to flip outward, achieving the effect of squeezing and fixing the outside of both ends of the racket, thereby ensuring the stability of the racket during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 A rear view of the mounting plate of the present invention;

[0025] Figure 3 It is a front view of the movable hole of the present invention;

[0026] Figure 4 An exploded view of the electromagnetic plate of the present invention;

[0027] Figure 5 It is a side sectional view of the drainage frame of the present invention;

[0028] Figure 6 It is a front view of the mounting member of the present invention;

[0029] Figure 7 It is the front view of the mounting hole of the present invention;

[0030] Figure 8 It is the front view of the threaded rod of the present invention.

[0031] The accompanying drawings are marked as follows: 1. mounting plate; 2. electromagnetic plate; 3. movable part; 4. telescopic rod; 5. spring; 6. positioning part; 7. clamping plate; 8. hole; 9. mounting hole; 10. mounting part; 11. drilling assembly; 12. electric push rod; 13. movable hole; 14. drainage frame; 15. fixing hole; 16. fixing part; 17. slag collecting box; 18. limiting plate; 19. protective shell; 20. slide groove; 21. slider; 22. supporting foot; 23. supporting part; 24. threaded rod; 25. supporting seat; 26. tooth plate; 27. supporting shaft; 28. pressing part; 29. ​​gear; 30. micro motor; 31. horizontal plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Refer to the instruction manual Figure 1-8 The present invention provides a badminton racket drilling device, comprising a mounting plate 1, a positioning assembly for fixing the badminton racket is provided on the front side of the mounting plate 1, and a hole opening assembly for drilling the badminton racket is provided on the top of the positioning assembly;

[0034] In order to achieve the purpose of conveniently fixing the badminton racket and improve the operating efficiency of the staff, such as Figure 2 and 4 As shown, the positioning assembly includes an electromagnetic plate 2 installed on the rear side of the mounting plate 1, and movable parts 3 are provided on the top and bottom of the electromagnetic plate 2. Two telescopic rods 4 are installed between the movable part 3 and the electromagnetic plate 2 at intervals. A spring 5 is sleeved on the outside of the telescopic rod 4, and the top and bottom ends of the spring 5 are respectively fixed to the electromagnetic plate 2 and the side close to the movable part 3. Positioning parts 6 are installed on the front sides of both ends of each movable part 3, and the two corresponding positioning parts 6 are distributed in mirror symmetry; a card plate 7 is provided on the front side of the mounting plate 1, and the card plate 7 is located on the side away from the two movable parts 3, and a hole 8 is opened inside the card plate 7 located on the top of the mounting plate 1, and the positioning part 6 is arranged between the two card plates 7.

[0035] Specifically, when the electromagnetic plate 2 is energized, due to the passage of current, the spring 5 is equivalent to an energized solenoid, and the direction of the current in each turn of the spring 5 is the same. According to the principle of mutual attraction between currents in the same direction, each turn of the spring 5 attracts the adjacent spring 5, thereby causing the entire spring 5 to contract, thereby driving the positioning member 6 on the movable part 3 to move inward and away from the badminton racket, thereby achieving the effect of making it easier for the staff to take and place the badminton racket. After that, the electromagnetic plate 2 is powered off, so that the spring 5 can reset and rebound to push the positioning member 6 on the movable part 3 to move outward to fix the badminton racket, thereby ensuring the stability of the badminton racket during processing.

[0036] In order to facilitate the drilling assembly 11 to perform hole drilling on the badminton racket, Figure 1 , 2 As shown in Figures 3 and 6, the hole-opening component includes a mounting hole 9 opened on the top of the mounting plate 1, a mounting member 10 is provided inside the mounting hole 9, and a drilling component 11 is embedded in the front side of the mounting member 10; electric push rods 12 are installed at the bottom of both ends of the mounting member 10, and the bottom end of the electric push rod 12 is fixed to the bottom of the inner cavity of the mounting hole 9. The mounting member 10 is driven up and down by the electric push rod 12, so that the drilling component 11 can be operated to perform drilling operations on the badminton racket, so as to achieve the purpose of convenient processing of the badminton racket by the staff.

[0037] In order to make the positioning member 6 effectively fix the badminton racket, Figure 1 , 2 As shown in Figures 3 and 7, a movable hole 13 is provided on one side of the mounting plate 1 close to the positioning member 6, and the positioning member 6 is arranged inside the movable hole 13. Through the setting of the movable hole 13, a movement space for the positioning member 6 can be provided, thereby ensuring that the positioning member 6 limits and fixes the badminton racket. A protective shell 19 is provided on the outside of the electromagnetic plate 2. The front end of the protective shell 19 is fixed to the rear side of the mounting plate 1, and the protective shell 19 is sleeved on the outside of multiple telescopic rods 4 and multiple springs 5. Through the setting of the protective shell 19, the electromagnetic plate 2 can be shielded and protected to avoid damage to the electromagnetic plate 2 caused by external collision and impact, and to avoid the adhesion of impurities such as dust to affect the performance of the electromagnetic plate 2.

[0038] In order to facilitate the collection of debris during the hole opening process of the badminton racket and improve the convenience of the staff in handling the debris, such as Figure 1 , 3As shown in Figure 5, a drainage frame 14 is installed on the front side of the mounting plate 1, and the drainage frame 14 is located at the bottom of the card plate 7 with a hole 8. Two fixing holes 15 are arranged on the front side of the bottom end of the drainage frame 14, and a fixing member 16 is arranged inside the fixing hole 15; a slag collecting box 17 is arranged at the bottom of the drainage frame 14, and one end of the fixing member 16 away from the drainage frame 14 is fixed to the front side of the slag collecting box 17. Through the setting of the drainage frame 14, the debris generated when the badminton racket is drilled can be guided into the slag collecting box 17, so that the debris can be collected easily, the debris can be avoided from being scattered and the workload of the staff in subsequent handling of the debris can be increased, and the convenience of the staff in handling the debris can be improved.

[0039] In order to facilitate the support and fixation of the bottom of the badminton racket, Figure 1 and 3 As shown, a limit plate 18 is provided at the bottom of the card plate 7 located on the front side of the bottom end of the mounting plate 1, and the limit plate 18 is installed on the front side of the mounting plate 1. Through the setting of the limit plate 18, the staff sets the badminton racket on the outside of the two card plates 7, thereby supporting and limiting the inside of the badminton racket by means of the two card plates 7. At the same time, with the help of the cooperation between the limit plate 18 and one of the card plates 7, the outside of the bottom end of the badminton racket can be supported and limited, thereby enhancing the stability of the badminton racket during processing. After the top end of the badminton racket is drilled, the staff turns over the badminton racket and sets the unprocessed bottom end of the badminton racket on the outside of the top card plate 7.

[0040] In order to facilitate the positioning member 6 to fully and effectively clamp and fix the badminton racket, as shown in FIG. Figure 1 and 4 As shown, the cross section of the positioning member 6 is set to be L-shaped. By setting the cross section of the positioning member 6 to be L-shaped, the positioning member 6 can fix and limit the outside of the badminton racket to ensure the stability of the badminton racket during processing.

[0041] In order to ensure the stability of the drilling assembly 11 when it moves up and down, Figure 1 , 2 As shown in FIGS. 3 and 7 , the inner walls on both sides of the mounting hole 9 are provided with slide grooves 20, and each slide groove 20 is provided with a slider 21. The end of the slider 21 away from the slide groove 20 is fixed to the mounting member 10. Through the cooperation of the slider 21 and the slide groove 20, the movement of the mounting member 10 can be limited, thereby ensuring the stability of the mounting member 10 when driving the drilling assembly 11 to move.

[0042] In order to ensure the support strength and support stability of the mounting plate 1, Figure 1 , 2As shown in Figures 3 and 7, two supporting feet 22 are installed at the bottom of the mounting plate 1. The two supporting feet 22 are symmetrically distributed about the central axis of the mounting plate 1. Through the arrangement of the supporting feet 22, the contact area between the mounting plate 1 and the ground can be expanded, thereby supporting and fixing the mounting plate 1 to ensure the stability of the mounting plate 1.

[0043] In order to enhance the stability of the racket when it is processed, such as Figure 1 and 8 As shown, two support members 23 are installed on the front side of the mounting plate 1, and a threaded rod 24 movably connected by a bearing is installed between the two support members 23, and the threads at both ends of the threaded rod 24 are in opposite directions, and the two ends of the threaded rod 24 are externally threadedly connected to a support seat 25, and a toothed plate 26 is installed at the front end of the support seat 25, and a support shaft 27 is provided on the front side of the end of the toothed plate 26 away from the support seat 25, and the top and bottom ends of the support shaft 27 are both provided with a cross plate 31 for connecting the mounting plate 1, and the top and bottom ends of the support shaft 27 are respectively movably connected to the two cross plates 31 through bearings, and the support shaft 27 is externally fixedly sleeved with a pressing piece 28 with an L-shaped cross section, and a gear 29 is provided inside the pressing piece 28 at one end close to the mounting plate 1, and the gear 29 is fixedly sleeved on The outside of the support shaft 27; a micro motor 30 is installed on one side of one of the support members 23 away from the threaded rod 24, and the output shaft of the micro motor 30 passes through the support member 23 and is fixed to the threaded rod 24. The threaded rod 24 is driven to rotate by the micro motor 30, and the threaded rod 24 drives the two support seats 25 to move inward synchronously, and the support seat 25 drives the corresponding tooth plate 26 and the gear 29 to transmit, so that the tooth 29 can drive the pressure piece 28 on the support shaft 27 to flip outward, thereby achieving the effect of squeezing and fixing the outside of both ends of the racket; when the support seat 25 drives the tooth plate 26 to move outward, the gear 29 meshing with the tooth plate 26 drives the pressure piece 28 on the support shaft 27 to flip inward, so that the pressure piece 28 is separated from the racket and it is convenient for the staff to take and put the racket.

[0044] First, the staff energizes the electromagnetic plate 2, so that the electromagnetic plate 2 can shrink the spring 5 to drive the positioning member 6 on the movable part 3 to move inward, thereby allowing the staff to install the badminton racket sleeve outside the two card plates 7, and support the badminton racket with the limit plate 18 and the card plate 7. After that, the staff cuts off the power of the electromagnetic plate 2, so that the spring 5 can rebound and push the positioning member 6 on the movable part 3 to move outward, thereby allowing multiple positioning members 6 to squeeze and fix the badminton racket from the inside to the outside, thereby effectively ensuring the stability of the badminton racket when the hole is opened, avoiding the shaking of the badminton racket, and the positioning method is simple and fast, which can effectively improve the operating efficiency of the staff;

[0045] After the badminton racket is fixed, the staff starts the electric push rod 12 to drive the drilling assembly 11 to move down and contact the badminton racket, thereby realizing the drilling operation on the badminton racket.

[0046] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A badminton racket drilling device, comprising a mounting plate (1), characterized in that: The front side of the mounting plate (1) is provided with a positioning component for fixing a badminton racket, and the top of the positioning component is provided with a hole-opening component for drilling holes in the badminton racket; The positioning assembly comprises an electromagnetic plate (2) mounted on the rear side of the mounting plate (1), a movable part (3) being provided at the top and bottom of the electromagnetic plate (2), two telescopic rods (4) being installed between the movable part (3) and the electromagnetic plate (2) and being spaced apart, a spring (5) being sleeved on the outside of the telescopic rod (4), and the top and bottom ends of the spring (5) being respectively fixed to the side close to the electromagnetic plate (2) and the movable part (3), and a positioning part (6) being installed at the front side of both ends of each movable part (3), and the two corresponding positioning parts (6) being distributed in a mirror-symmetrical manner; A clamping plate (7) is provided on the front side of the mounting plate (1), the clamping plate (7) is located on a side away from the two movable parts (3), and a hole (8) is provided inside the clamping plate (7) located on the top of the mounting plate (1), and the positioning member (6) is provided between the two clamping plates (7); A drainage frame (14) is installed on the front side of the mounting plate (1), and the drainage frame (14) is located at the bottom of the card plate (7) provided with a hole (8). Two fixing holes (15) are provided at intervals on the front side of the bottom end of the drainage frame (14), and fixing members (16) are provided inside the fixing holes (15); A slag collecting box (17) is provided at the bottom of the drainage frame (14), and one end of the fixing member (16) away from the drainage frame (14) is fixed to the front side of the slag collecting box (17).

2. A badminton racket drilling device according to claim 1, characterized in that: The hole-opening component comprises a mounting hole (9) formed on the top of the mounting plate (1), a mounting piece (10) being provided inside the mounting hole (9), and a drilling component (11) being embedded on the front side of the mounting piece (10); Electric push rods (12) are installed at the bottom of both ends of the mounting member (10), and the bottom end of the electric push rod (12) is fixed to the bottom of the inner cavity of the mounting hole (9).

3. A badminton racket drilling device according to claim 1, characterized in that: A movable hole (13) is provided on one side of the mounting plate (1) close to the positioning member (6), and the positioning member (6) is arranged inside the movable hole (13).

4. A badminton racket drilling device according to claim 1, characterized in that: A limiting plate (18) is provided at the bottom of the clamping plate (7) located at the front side of the bottom end of the mounting plate (1).

5. A badminton racket drilling device according to claim 1, characterized in that: The electromagnetic plate (2) is externally sleeved with a protective shell (19), the front end of the protective shell (19) is fixed to the rear side of the mounting plate (1), and the protective shell (19) is sleeved outside the plurality of telescopic rods (4) and the plurality of springs (5).

6. A badminton racket drilling device according to claim 1, characterized in that: The cross section of the positioning member (6) is set to be L-shaped.

7. A badminton racket drilling device according to claim 2, characterized in that: Slide grooves (20) are provided on the inner walls on both sides of the mounting hole (9), and a sliding block (21) is provided inside each sliding groove (20). One end of the sliding block (21) away from the sliding groove (20) is fixed to the mounting member (10).

8. A badminton racket drilling device according to claim 1, characterized in that: Two supporting feet (22) are installed at the bottom of the mounting plate (1), and the two supporting feet (22) are symmetrically distributed about the central axis of the mounting plate (1).

9. A badminton racket drilling device according to claim 1, characterized in that: Two support members (23) are installed on the front side of the mounting plate (1), a threaded rod (24) movably connected by a bearing is installed between the two support members (23), and the threads at both ends of the threaded rod (24) are in opposite directions, and the two ends of the threaded rod (24) are both threadedly connected to a support seat (25) on the outside, and a toothed plate (26) is installed on the front end of the support seat (25), and a support shaft (27) is provided on the front side of one end of the toothed plate (26) away from the support seat (25), and the top and bottom ends of the support shaft (27) are both provided with a transverse plate (31) for connecting to the mounting plate (1), and the top and bottom ends of the support shaft (27) are respectively movably connected to the two transverse plates (31) through bearings, and the support shaft (27) is externally fixedly sleeved with a pressure piece (28) with an L-shaped cross section, and a gear (29) is provided inside the pressure piece (28) at one end close to the mounting plate (1), and the gear (29) is fixedly sleeved on the outside of the support shaft (27); A micro motor (30) is installed on one side of one of the supports (23) away from the threaded rod (24), and an output shaft of the micro motor (30) passes through the support (23) and is fixed to the threaded rod (24).

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