Polishing device for electronic component processing

By designing a grinding device for the truss assembly and base assembly, and utilizing the optical axis and worm gear mechanism, flexible grinding of the grinding head and adjustable clamping of the fixed clamp are achieved, solving the problem of damage to electronic components caused by excessive clamping force in the existing technology, and improving grinding accuracy and compatibility.

CN119526198BActive Publication Date: 2025-10-24FOSHAN ZHUOPIN ELECTRONIC TECH CO LTD
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Patent Information

Application Number
CN202411969189.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-10-24
Estimated Expiration
2044-12-30

AI Technical Summary

Technical Problem

In the prior art, electronic components are easily damaged during the polishing process due to excessive clamping force caused by the mismatch between the sliding range and size of the clamp.

Method used

A grinding device comprising a truss assembly and a base assembly was designed. The optical axis drives the material box and turntable to rotate, and the grinding head is brought close to the electronic components by the thread engagement, and grinding is performed by horizontal sliding. The fixed clamp is flexibly clamped by the worm gear and worm wheel mechanism, and the clamping force is prevented from being too large after clamping by the disconnection component.

Benefits of technology

It improves the practicality and precision of the grinding device, protects electronic components, avoids damage caused by excessive clamping force, and enhances compatibility with electronic components of different specifications.

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Abstract

The present invention relates to the technical field of electronic component processing, and in particular, to a grinding device for processing electronic components. It includes a truss assembly, a base assembly is provided below the truss assembly, the truss assembly grinds the electronic components in the horizontal direction, and the base assembly clamps and fixes the electronic components. The present invention drives the material storage box and the turntable to rotate through the optical axis, and then uses the screwing between the threads to slide the frame downward, so that the grinding head and the electronic components are close to the electronics, and cooperates with the horizontally sliding grinding head, so that the device can grind the top surface and side walls of the electronic components, thereby improving the practicality of the device; the first worm drives the first worm wheel to rotate to push the worm sleeve to slide, and then push the third worm wheel to rotate, and uses the disconnect assembly to connect the third worm wheel and the screw, so that the screw rotates and drives the two fixing clamps to approach each other, thereby clamping and fixing electronic components of different specifications.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic component processing, in particular to a polishing device for electronic component processing. BACKGROUND

[0002] Electronic components need to be polished during manufacturing. After the electronic component mainboard is fixed firmly, a person generally needs to hold a polishing device to polish the surface of the electronic component mainboard. The electronic component mainboard is relatively thin, and if the position of the polishing head is slightly offset during polishing, the polishing will fail. The method for polishing electronic components in the prior art is generally to first fix a single electronic component on a clamp, and then control a polishing tool through a numerical control machine tool. Since the strength of the electronic component shell is relatively weak, when the clamp is used to clamp electronic components of different sizes, the clamping force is likely to be too large due to the mismatch between the sliding range of the clamp and the size of the electronic component, thereby damaging the electronic component during clamping. SUMMARY

[0003] The present application aims to provide a polishing device for electronic component processing to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, a polishing device for electronic component processing is provided, which comprises a truss assembly, a base assembly is arranged below the truss assembly, the truss assembly polishes the electronic component in the horizontal direction, the base assembly clamps and fixes the electronic component, and the base assembly no longer continues to extrude the side wall of the electronic component when the pressure applied by the base assembly to the electronic component is too large. When the base assembly rotates, it drives the truss assembly to slide downward, so that the truss assembly approaches the electronic component.

[0005] As a further improvement of the present technical solution, the base assembly comprises a bottom plate, a plurality of hollow columns are fixedly installed on the side wall of the bottom plate, the truss assembly comprises a plurality of vertical sliding rods slidingly arranged inside the plurality of hollow columns, the upper end of each vertical sliding rod is fixedly connected with a T-shaped frame, a grinding head is slidingly arranged below the T-shaped frame, the grinding head polishes the electronic component, the grinding head slides horizontally between the side walls of the T-shaped frame, and the vertical sliding rod slides in the hollow column to drive the grinding head to approach the bottom plate.

[0006] As a further improvement of the present technical solution, a lifting block is fixedly sleeved on the middle segment of the vertical sliding rod, a turntable is arranged between the plurality of lifting blocks, a screw thread is arranged on the side wall of the turntable, the plurality of lifting blocks are engaged with the turntable through screw grooves formed in the side wall, and the turntable rotates to drive the plurality of lifting blocks to slide downward.

[0007] As a further improvement of this technical solution, a material storage box is fixedly connected to the top of the turntable. A sliding hole is provided above the material storage box. Two fixing clips are provided in the sliding hole. The fixing clips pass through the sliding hole and slide above the material storage box. The electronic components are placed above the material storage box. The two fixing clips are close to each other to clamp and fix the electronic components.

[0008] As a further improvement of this technical solution, vertical plates are fixedly installed on both sides of the base plate, slots are opened on the upper sides of the vertical plates, and a limiting ring is provided under the turntable. The turntable is connected to the slots on the two vertical plates through the limiting ring and rotates. The rotation of the turntable drives the electronic components between the two fixing clamps to rotate.

[0009] As a further improvement of this technical solution, an optical axis is rotatably installed above the base plate, the optical axis passes through the material storage box and is fixedly connected to the top of the turntable, and the rotation of the optical axis drives the turntable to rotate. A second motor is provided below the optical axis, and the rotating shaft of the second motor passes through the base plate and is fixedly connected to the optical axis.

[0010] As a further improvement of the present technical solution, a worm sleeve is provided on the optical axis, a first worm wheel is rotatably installed on one side of the worm sleeve, a second worm wheel is coaxially connected to one side of the first worm wheel, a first worm is engaged with a side of the second worm wheel close to the optical axis, the rotation of the first worm drives the second worm wheel and the first worm wheel to rotate, the rotation of the first worm wheel pushes the worm sleeve to slide up and down, a first motor is provided under the first worm, and the rotating shaft of the first motor passes through the base plate and is fixedly connected to the first worm.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the grinding device for processing electronic components, the material box and the turntable are driven to rotate by the optical axis, and then the screw thread is used to make the field frame slide downward, so that the grinding head electronic components are brought closer to the electrons. With the horizontal sliding grinding head, the device can grind the top surface and side walls of the electronic components, thereby improving the practicality of the device.

[0013] 2. In the grinding device for processing electronic components, the first worm drives the first worm wheel to rotate to push the worm sleeve to slide, thereby pushing the third worm wheel to rotate. The third worm wheel and the screw are connected by a disconnect assembly, so that the screw rotates and drives the two fixing clamps to approach each other, thereby clamping and fixing electronic components of different specifications. While improving the compatibility of the device, it also improves the accuracy of grinding electronic components.

[0014] 3. In the grinding device for processing electronic components, after the two fixing clamps clamp the electronic components, the disconnection assembly is provided to disconnect the third worm gear and the screw, thereby preventing the two fixing clamps from getting closer, avoiding damage to the electronic components due to excessive clamping force input, and effectively protecting the electronic components. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present application;

[0016] Figure 2 is a schematic diagram of the truss assembly structure of the present application;

[0017] Figure 3 is a schematic diagram of the truss assembly structure of the present application;

[0018] Figure 4 is a schematic diagram of the base assembly structure of the present application;

[0019] Figure 5 is a schematic diagram of the base assembly structure of the present application;

[0020] Figure 6 is a schematic diagram of the base assembly structure of the present application;

[0021] Figure 7 is a schematic diagram of the disconnection assembly structure of the present application;

[0022] Figure 8 is a schematic diagram of the disconnection assembly structure of the present application;

[0023] The meanings of the respective reference numerals in the drawings are as follows:

[0024] 1. truss assembly; 11. field frame; 12. lifting block; 13. grinding head; 14. vertical slide rod;

[0025] 2. base assembly; 21. base plate; 211. hollow column; 212. vertical plate; 22. rotary disc; 23. material placing box; 24. fixing clamp; 25. first worm; 251. first motor; 26. optical shaft; 261. worm sleeve; 262. second motor; 27. first worm wheel; 271. second worm wheel; 28. screw rod; 281. third worm wheel;

[0026] 29. disconnection assembly; 291. protective shell; 292. disc spring; 293. sprocket; 294. steel ball; 295. occlusion plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] Example 1

[0030] See also Figures 1-8 As shown, the purpose of this embodiment is to provide a grinding device for processing electronic components, including a truss assembly 1, and a base assembly 2 is arranged below the truss assembly 1. The truss assembly 1 grinds the electronic components in the horizontal direction to ensure the cleanliness of the surface. The base assembly 2 clamps and fixes the electronic components, so that the effect of fixing the electronic components is better, thereby ensuring the grinding effect. When the pressure applied by the base assembly 2 on the electronic components is too large, the side walls of the electronic components will no longer be squeezed, thereby avoiding the device continuing to apply pressure to the electronic components after clamping the electronic components, thereby causing damage to the electronic components. When the base assembly 2 rotates, it drives the truss assembly 1 to slide downward, so that the truss assembly 1 approaches the electronic components, so that the truss assembly 1 can grind the side walls of the electronic components from the vertical direction, thereby improving the practicality of the device.

[0031] The base assembly 2 includes a bottom plate 21, and a plurality of hollow columns 211 are fixedly installed on the side walls of the bottom plate 21. The truss assembly 1 includes a plurality of vertical slide rods 14 slidably arranged inside the plurality of hollow columns 211, so that the vertical slide rods 14 are restricted to slide inside the hollow columns 211, thereby limiting the range of movement of the equipment or device, thereby preventing equipment damage and accidents, and ensuring that the equipment is working in the correct position. The upper ends of the plurality of vertical slide rods 14 are fixedly connected to the field frame 11, and a grinding head 13 is slidably arranged below the field frame 11. The electronic components are ground by the rotating grinding head 13. The grinding head 1 The grinding head 13 slides horizontally between the side walls of the cross-section frame 11, and the vertical slide bar 14 slides in the hollow column 211, driving the grinding head 13 to approach the bottom plate 21. When the grinding head 13 slides horizontally in the cross-section frame 11, the grinding head 13 grinds the electronic components horizontally. When the cross-section frame 11 slides downward, the grinding head 13 slides horizontally, so that the grinding piece installed on the grinding head 13 can move to the side wall of the electronic component, thereby grinding the side wall of the electronic component. This allows adjustment according to different component shapes and sizes, thereby improving the compatibility of the device with electronic components of different sizes.

[0032] The middle section of the vertical sliding rod 14 is fixedly sleeved with a lifting block 12, a plurality of lifting blocks 12 are provided with a rotating disc 22, a thread is arranged on the side wall of the rotating disc 22, and the plurality of lifting blocks 12 are engaged with the rotating disc 22 through the screw groove arranged on the side wall. By screwing between the threads, the rotating disc 22 drives the lifting block 12 to slide downward when rotating, and in turn drives the grinding head 13 to approach the electronic component. The cooperation with the sliding in the horizontal direction can polish the top surface and the side wall of the electronic component, greatly improving the polishing efficiency and processing precision. The rotating disc 22 is fixedly connected with a material placing box 23 above. When the rotating disc 22 rotates, it drives the material placing box 23 to rotate, and in turn drives the electronic component placed on the material placing box 23 to rotate. When the device polishes the electronic component, the worker can observe the electronic component being processed from multiple angles, and in turn observe the progress of polishing the electronic component in time, so as to avoid damaging the electronic component due to excessive polishing. A sliding hole is arranged on the top of the material placing box 23, and two fixed clamps 24 are arranged in the sliding hole. The fixed clamps 24 slide on the top of the material placing box 23 through the sliding hole. The electronic component is placed on the top of the material placing box 23, and the two fixed clamps 24 are close to each other to clamp and fix the electronic component, so that the position of the electronic component is fixed during processing, avoiding the deviation of product precision caused by part shaking.

[0033] A light shaft 26 is rotatably installed above the bottom plate 21, and the light shaft 26 is fixedly connected through the top of the material placing box 23 and the rotating disc 22. The light shaft 26 drives the rotating disc 22 to rotate. A second motor 262 is arranged below the light shaft 26. The rotating shaft of the second motor 262 is fixedly connected through the bottom plate 21 and the light shaft 26. The rotating shaft of the second motor 262 drives the light shaft 26 to rotate, and in turn drives the rotating disc 22 to rotate. The electronic component can rotate when being polished, so as to facilitate the observation of the worker and avoid damaging the electronic component due to excessive polishing.

[0034] Two vertical plates 212 are fixedly installed on both sides of the bottom plate 21. A slot is arranged on the upper side of the vertical plate 212. A limiting ring is arranged below the rotating disc 22. The rotating disc 22 is clamped on the slots of the two vertical plates 212 through the limiting ring and rotates. The movement range of the rotating disc 22 is limited by the two vertical plates 212, so as to prevent equipment damage and accidents, and ensure that the rotating disc 22 works in the correct position. The rotating disc 22 drives the electronic component between the two fixed clamps 24 to rotate, so that the worker can observe the polishing progress of the electronic component from one side 360°, avoiding damaging the electronic component due to excessive polishing.

[0035] The optical axis 26 is sleeved with a worm sleeve 261, one side of the worm sleeve 261 is rotatably installed with a first worm wheel 27, when the first worm wheel 27 rotates, the worm sleeve 261 is driven to slide up and down, one side of the first worm wheel 27 is coaxially connected with a second worm wheel 271, the second worm wheel 271 is meshed with a first worm 25 on the side close to the optical axis 26, the first worm 25 drives the second worm wheel 271 and the first worm wheel 27 to rotate, and then the first worm wheel 27 is driven to slide up and down, the first motor 251 is arranged below the first worm 25, the rotating shaft of the first motor 251 penetrates through the bottom plate 21 and the first worm 25 and is fixedly connected, the first worm 25 is driven to rotate through the rotating shaft of the first motor 251, the two fixed clamps 24 are driven to move close to each other through the up-and-down sliding of the worm sleeve 261, and then the electronic components are clamped and fixed, the electronic components can be clamped flexibly according to the size and specification of different electronic components, the effect of fixing the electronic components is better, the polishing effect is guaranteed, the two screw rods 28 are rotatably installed in the inside of the material box 23, the screw rods 28 penetrate through the fixed clamps 24 and are meshed with the fixed clamps 24 through threads, the thread directions of the two screw rods 28 are opposite, the screw rods 28 are driven to rotate when the threads are screwed, and then the two fixed clamps 24 are driven to move close to each other, and then the electronic components of different sizes are clamped, and the practicability of the device is improved.

[0036] The third worm wheel 281 is arranged between the two screw rods 28, the worm sleeve 261 drives the third worm wheel 281 to rotate, the third worm wheel 281 drives the two screw rods 28 to rotate, and then the two fixed clamps 24 move close to each other, the electronic components are clamped and fixed, the effect of fixing the electronic components is better, and the polishing effect is guaranteed, the disconnection assembly 29 is arranged on the two sides of the third worm wheel 281, the third worm wheel 281 is connected with the two screw rods 28 through the disconnection assemblies 29 on the two sides, when the two fixed clamps 24 clamp the electronic components, if the first motor 251 continues to work, the third worm wheel 281 and the screw rod 28 are disconnected through the disconnection assembly 29, the torque of the third worm wheel 281 cannot be continuously transmitted to the two screw rods 28, and then the two screw rods 28 cannot continuously drive the two fixed clamps 24 to move close to each other, and then the damage of the electronic components caused by excessive clamping force is avoided.

[0037] The disconnection assembly 29 comprises a protective shell 291 for protecting the internal structure and preventing abrasive dust from entering the interior of the protective shell 291 and causing the disconnection assembly 29 to fail. The interior of the protective shell 291 is provided with two disc springs 292. One bottom surface of each disc spring 292 is convex, and the other bottom surface is concave. The convex sides of the two disc springs 292 are pressed against each other, causing the disc springs 292 to elastically deform and store potential energy. The side of each disc spring 292 close to the third worm gear 281 is provided with a sprocket 293 that is fixedly connected to the screw rod 28. A plurality of concave teeth are formed on the side wall of the sprocket 293, and a steel ball 294 is arranged in each concave tooth. When the steel balls 294 rotate, they push the sprocket 293 to rotate, thereby driving the two fixed clamps 24 to move closer to each other through the screw rod 28. The side of the sprocket 293 close to the third worm gear 281 is provided with a clamping plate 295. The side of the clamping plate 295 close to the sprocket 293 is annularly provided with a plurality of wedge blocks, and the steel balls 294 are clamped between two wedge blocks. The steel balls 294, the clamping plate 295, and the third worm gear 281 are fixedly connected. When the worm sleeve 261 slides upward, it pushes the third worm gear 281 to rotate, ultimately causing the two fixed clamps 24 to move closer to each other. The disc springs 292 push the plurality of steel balls 294 to move closer to the clamping plate 295, causing the screw rod 28 to be connected to the third worm gear 281 through the sprocket 293, the steel balls 294, and the clamping plate 295. When the two fixed clamps 24 clamp the electronic components, the clamping plate 295 pushes the plurality of steel balls 294 to press the disc springs 292, causing the contact between the two disc springs 292 to be more intimate, thereby compressing the space and causing the steel balls 294 to disengage from between the two wedge blocks, thereby causing the third worm gear 281 to no longer drive the screw rod 28 to rotate through the disconnection assembly 29. This avoids the second motor 262 continuing to rotate after the electronic components are clamped, which would cause the clamping force to be too large and damage the electronic components. This effectively protects the electronic components.

[0038] The present invention drives the material storage box 23 and the turntable 22 to rotate through the optical axis 26, and then uses the screwing between the threads to slide the frame 11 downward, so that the grinding head 13 electronic components are close to the electronics. With the horizontal sliding grinding head 13, the device can grind the top surface and side walls of the electronic components, thereby improving the practicality of the device; the first worm 25 drives the first worm wheel 27 to rotate to push the worm sleeve 261 to slide, and then drives the third worm wheel 281 to rotate, and the disconnect assembly 29 is used to connect the third worm wheel 281 and the screw 28 The connection causes the screw 28 to rotate and drive the two fixing clamps 24 to approach each other, thereby clamping and fixing electronic components of different specifications, improving the compatibility of the device while also improving the accuracy of polishing electronic components; at the same time, after the two fixing clamps 24 clamp the electronic components, the disconnecting assembly 29 is provided to disconnect the third worm gear 281 and the screw 28, thereby preventing the two fixing clamps 24 from continuing to approach each other, avoiding damage to the electronic components due to excessive clamping force input, and effectively protecting the electronic components.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An electronic component processing polishing device, comprising a truss assembly (1), a base assembly (2) is arranged below the truss assembly (1), characterized in that: The truss assembly (1) polishes electronic components in the horizontal direction, the base assembly (2) clamps and fixes the electronic components, and when the base assembly (2) applies excessive pressure to the electronic components, it no longer continues to extrude the side wall of the electronic components, and when the base assembly (2) rotates, it drives the truss assembly (1) to slide downward, so that the truss assembly (1) approaches the electronic components; The base assembly (2) includes a bottom plate (21), a plurality of hollow columns (211) are fixedly installed on the side wall of the bottom plate (21), the truss assembly (1) includes a plurality of vertical sliding rods (14) slidingly arranged in the plurality of hollow columns (211), the upper ends of the plurality of vertical sliding rods (14) are fixedly connected with a T-shaped frame (11), a grinding head (13) is slidingly arranged below the T-shaped frame (11), the grinding head (13) polishes electronic components, and the grinding head (13) slides horizontally between the side walls of the T-shaped frame (11), the vertical sliding rod (14) slides in the hollow column (211) and drives the grinding head (13) to approach the bottom plate (21); The middle section of the vertical sliding rod (14) is fixedly sleeved with a lifting block (12), a plurality of lifting blocks (12) are arranged between the vertical sliding rod (14), and a rotating disc (22) is arranged on the side wall of the vertical sliding rod (14), a plurality of lifting blocks (12) are engaged with the rotating disc (22) through the screw grooves formed in the side wall, and the rotating disc (22) drives the plurality of lifting blocks (12) to slide downward; The upper side of the rotating disc (22) is fixedly connected with a material placing box (23), a sliding hole is formed in the upper side of the material placing box (23), two fixed clamps (24) are arranged in the sliding hole, the fixed clamps (24) slide on the upper side of the material placing box (23) through the sliding hole, and the electronic components are placed on the upper side of the material placing box (23); two fixed clamps (24) are arranged on the upper side of the material placing box (23), and the electronic components are clamped and fixed by the two fixed clamps (24) approaching each other; The upper side of the rotating disc (22) is fixedly connected with a material placing box (23), a sliding hole is formed in the upper side of the material placing box (23), two fixed clamps (24) are arranged in the sliding hole, the fixed clamps (24) slide on the upper side of the material placing box (23) through the sliding hole, and the electronic components are placed on the upper side of the material placing box (23); two fixed clamps (24) are arranged on the upper side of the material placing box (23), and the electronic components are clamped and fixed by the two fixed clamps (24) approaching each other; 2. The polishing apparatus for processing electronic components according to claim 1, wherein: The upper side of the bottom plate (21) is rotatably installed with an optical shaft (26), the optical shaft (26) penetrates the top of the material placing box (23) and the rotating disc (22) and is fixedly connected, the optical shaft (26) drives the rotating disc (22) to rotate, and the lower side of the optical shaft (26) is provided with a second motor (262), the rotating shaft of the second motor (262) penetrates the bottom plate (21) and the optical shaft (26) and is fixedly connected.

3. The electronic component processing polishing apparatus according to claim 2, characterized by: The optical axis (26) is sleeved with a worm sleeve (261), one side of the worm sleeve (261) is rotatably provided with a first worm wheel (27), one side of the first worm wheel (27) is coaxially connected with a second worm wheel (271), one side of the second worm wheel (271) close to the optical axis (26) is engaged with a first worm (25), the first worm (25) drives the second worm wheel (271) and the first worm wheel (27) to rotate, the first worm wheel (27) drives the worm sleeve (261) to slide up and down, and the first motor (251) is arranged below the first worm (25).

4. The polishing apparatus for processing electronic components according to claim 3, wherein: The inside of the material placing box (23) is rotatably provided with two screws (28), the screws (28) penetrate through the fixed clamps (24) and are engaged with the fixed clamps (24) through threads, the thread directions of the two screws (28) are opposite, and the screws (28) drive the two fixed clamps (24) to move close to each other when rotating.

5. The electronic component processing polishing apparatus according to claim 4, characterized by: A third worm wheel (281) is arranged between the two screws (28), the worm sleeve (261) drives the third worm wheel (281) to rotate, the third worm wheel (281) drives the two screws (28) to rotate, and the two sides of the third worm wheel (281) are provided with disconnection assemblies (29), and the third worm wheel (281) is connected with the two screws (28) through the disconnection assemblies (29) on the two sides.

6. The polishing apparatus for processing electronic components as claimed in claim 5, wherein: The disconnection assembly (29) comprises a protection shell (291), two disc springs (292) are arranged in the protection shell (291), the two disc springs (292) are arranged to protrude from one side close to each other, the disc springs (292) are pressed against each other, chain wheels (293) are arranged on the side of the disc springs (292) close to the third worm wheel (281), the chain wheels (293) are fixedly connected with the screws (28), a plurality of recessed teeth are formed in the side wall of the chain wheel (293), steel balls (294) are arranged in the recessed teeth, a clamping plate (295) is arranged on the side of the chain wheel (293) close to the third worm wheel (281), a plurality of wedge blocks are annularly arranged on the side of the clamping plate (295) close to the chain wheel (293), the steel balls (294) are clamped between the two wedge blocks, the clamping plate (295) is fixedly connected with the third worm wheel (281), the disc springs (292) drive the plurality of steel balls (294) to move close to the clamping plate (295), when the two fixed clamps (24) clamp the electronic components, the clamping plate (295) drives the plurality of steel balls (294) to press the disc springs (292), so that the steel balls (294) are separated from between the two wedge blocks, and then the third worm wheel (281) is no longer driven by the disconnection assembly (29) to rotate the screw (28).

Citation Information

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