Grinding device for electrostatic contacts

Abstract

The utility model discloses a kind of grinding devices of electrostatic contact, belong to grinding processing equipment technical field, the grinding device includes the clamping assembly for clamping electrostatic contact, first station is equipped on clamping assembly, hot shrink tube is placed on first station, hot shrink tube is inserted for the clamping part of electrostatic contact, air gun assembly is equipped on clamping assembly, air gun assembly can spray high-temperature hot gas, when clamping assembly moves to the clamping part of electrostatic contact, air gun assembly is spirally rotated with hot shrink tube as center, so that hot shrink tube is heat-shrunk and tightened and the clamping part of electrostatic contact is connected, to when clamping assembly clamps the clamping part of electrostatic contact, clamping assembly is clamped on heat-shrunk and tightened hot shrink tube.The utility model makes grinding fluid permeability zero by heat shrink tube sealing, radically cure intergranular corrosion, simultaneously, realize micro-newton level flexible clamping by heat shrink tube buffer, avoid clamping damage, and pass through the heating mode of spiral heating and end portion reinforcement to guarantee sealing property.

Description

Technical Field

[0001] This utility model belongs to the technical field of grinding equipment, and in particular relates to a grinding device with an electrostatic contact. Background Technology

[0002] In modern industrial production, electrostatic contacts are a key component widely used in many fields such as electronics and electrical engineering. Their surface quality and precision play a crucial role in the performance, stability, and service life of equipment.

[0003] When grinding electrostatic contacts in existing grinding equipment, the grinding fluid flows to the clamping part of the electrostatic contact, causing the grinding fluid to spread along the grain boundaries, resulting in brittle fracture of the clamping part of the electrostatic contact, a decrease in tensile strength, and easy formation of pits with a depth >50μm, which become stress concentration sources.

[0004] Therefore, there is an urgent need to design a grinding device for electrostatic contacts to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a grinding device for electrostatic contacts, which has the advantage that the grinding fluid cannot flow to the clamping part of the electrostatic contact, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the specific technical solution of the electrostatic contact grinding device of this utility model is as follows:

[0007] A grinding apparatus for an electrostatic contact includes a clamping assembly for holding the electrostatic contact. The clamping assembly has a first station on which a heat shrink tubing is placed. The heat shrink tubing is inserted into the clamping part of the electrostatic contact. The clamping assembly is equipped with an air gun assembly that can spray high-temperature hot air. When the clamping assembly moves toward the clamping part of the electrostatic contact, the air gun assembly rotates spirally around the heat shrink tubing as the center, causing the heat shrink tubing to shrink and tighten and connect with the clamping part of the electrostatic contact. Thus, when the clamping assembly clamps the clamping part of the electrostatic contact, the clamping assembly is clamped on the heat shrink tubing after it has been shrunk and tightened.

[0008] Furthermore, the heat shrink tubing is wrapped with sealing tape.

[0009] Furthermore, the clamping assembly includes a chuck and multiple jaws. The chuck has a sliding groove, and the jaws are slidably connected to the sliding groove. The multiple jaws slide towards each other or away from each other, and the multiple jaws can clamp the clamping part of the electrostatic contact.

[0010] Furthermore, an annular groove is provided on the chuck, and the air gun assembly rotates spirally along the annular groove, with the annular groove being the first working position.

[0011] Furthermore, the air gun assembly is equipped with an auxiliary component, which enables the air gun assembly to rotate spirally around the heat shrink tubing when the clamping part of the clamping assembly is holding the electrostatic contact.

[0012] Furthermore, the auxiliary component includes a rotating rod with a gear fixedly connected to it. The gear can rotate around the rotating rod as the center. The air gun assembly is mounted on the gear, and the air gun assembly and the gear are not on the same axis. The air gun assembly can slide up and down relative to the gear so that when the gear rotates, the air gun assembly rotates spirally around the heat shrink tubing as the center.

[0013] Furthermore, the auxiliary component also includes a limiting ring. The air gun assembly abuts against the top surface of the limiting ring. The top surface of the limiting ring is provided with a first position and a second position. The second position is lower than the first position. When the air gun assembly is in the first position, the air gun assembly is located at the end of the heat shrink tubing. When the air gun assembly is in the second position, the air gun assembly is located below the tail of the heat shrink tubing.

[0014] Furthermore, a connecting rod is fixedly connected to any one of the jaws, and a toothed part is connected to the connecting rod. The toothed part meshes with a gear. When the jaw clamps the electrostatic contact, the toothed part slides in the first direction, and the gear rotates, causing the air gun assembly to move from the first position to the second position. After the air gun assembly moves to the second position, the toothed part disengages from the gear, and the connecting rod slides in the first direction until the jaw clamps the clamping part of the electrostatic contact.

[0015] Furthermore, the air gun assembly includes a sliding rod and a hot air gun. The sliding rod is fixedly connected to the hot air gun. A through hole is provided on the gear, and the sliding rod is slidably connected to the through hole. The end of the sliding rod away from the hot air gun abuts against the limiting ring, so that when the sliding rod moves from the second position to the first position, the sliding rod and the hot air gun slide downward by their own gravity.

[0016] Furthermore, a ball bearing is connected to the end of the sliding rod away from the hot air gun, and the sliding rod makes rolling contact with the limiting ring through the ball bearing.

[0017] This invention has the following advantages: the heat shrink tubing makes the grinding fluid permeability zero, thus eliminating intergranular corrosion. At the same time, the heat shrink tubing provides a micro-Newton level flexible clamping, avoiding clamping damage. Furthermore, the spiral heating and end-strength heating method ensures sealing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention with the air gun assembly located in the second position;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention with the air gun assembly located in the first position;

[0020] Figure 3This is a schematic diagram of the structure of the electrostatic contact and heat shrink tubing of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the connecting rod teeth and gear of this utility model;

[0022] Figure 5 This is a schematic diagram of the air gun assembly and the limiting ring of this utility model;

[0023] Figure 6 This is a schematic diagram of the limiting ring of this utility model;

[0024] The markings in the diagram are as follows: 1. Static contact; 11. Heat shrink tubing; 2. Chuck; 21. Claw; 22. Annular groove; 23. Connecting rod; 3. Hot air gun assembly; 31. Sliding rod; 32. Hot air gun; 4. Auxiliary assembly; 41. Gear; 42. Rotating rod; 43. Limiting ring; 431. First position; 432. Second position. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0027] The following is a reference to the appendix. Figure 1 To be continued Figure 6 This invention describes a grinding device for electrostatic contacts.

[0028] When grinding electrostatic contacts in existing grinding equipment, the grinding fluid flows to the clamping part of the electrostatic contact, causing the grinding fluid to spread along the grain boundaries, resulting in brittle fracture of the clamping part of the electrostatic contact, a decrease in tensile strength, and easy formation of pits with a depth >50μm, which become stress concentration sources.

[0029] Therefore, the grinding device for the electrostatic contact includes a clamping assembly for clamping the electrostatic contact 1. The clamping assembly is provided with a first station, on which a heat shrink tube 11 is placed. The heat shrink tube 11 is inserted into the clamping part of the electrostatic contact 1. The clamping assembly is provided with an air gun assembly 3, which can spray high-temperature hot air. When the clamping assembly moves toward the clamping part of the electrostatic contact 1, the air gun assembly 3 rotates spirally around the heat shrink tube 11 as the center, so that the heat shrink tube 11 is heat-shrinked and tightened and connected to the clamping part of the electrostatic contact 1. So that when the clamping assembly clamps the clamping part of the electrostatic contact 1, the clamping assembly is clamped on the heat shrink tube 11 after it has been heat-shrinked and tightened.

[0030] By setting the heat shrink tubing 11, a radial shrinkage force is formed after heat shrinking, which completely seals the gap between the heat shrink tubing 11 and the electrostatic contact 1, preventing the grinding fluid from spreading along the grain boundary. At the same time, when grinding the electrostatic contact 1, it is clamped on the heat shrink tubing 11 after heat shrinking by the clamping assembly. The heat shrink tubing 11 elastically absorbs the grinding vibration impact and protects the clamping part of the electrostatic contact 1, avoiding the clamping assembly directly clamping the clamping part of the electrostatic contact 1 and causing damage to the clamping part of the electrostatic contact 1.

[0031] By setting up the air gun assembly 3, after the heat shrink tubing 11 is inserted into the clamping part of the electrostatic contact 1, the air gun assembly 3 sprays high-temperature hot gas to heat shrink and tighten the heat shrink tubing 11 and connect it with the clamping part of the electrostatic contact 1, completely sealing the gap between the heat shrink tubing 11 and the clamping part of the electrostatic contact 1. Furthermore, the air gun assembly 3 sprays high-temperature hot gas by rotating spirally around the heat shrink tubing 11, forming a spiral heating trajectory, which ensures the sealing of the connection between the heat shrink tubing 11 and the clamping part of the electrostatic contact 1.

[0032] The heat shrink tubing 11 is wrapped with a sealing tape, preferably a PTFE sealing tape, which further ensures the sealing of the connection between the heat shrink tubing 11 and the clamping part of the electrostatic contact 1. The air gun assembly 3 sprays high-temperature hot air by rotating spirally around the heat shrink tubing 11 to achieve zero-damage fixation of the PTFE sealing tape.

[0033] The clamping assembly includes a chuck 2 and multiple jaws 21. The chuck 2 has a sliding groove, and the jaws 21 are slidably connected to the sliding groove. The multiple jaws 21 slide towards or away from each other. The multiple jaws 21 can clamp the clamping part of the electrostatic contact 1. The sliding of the multiple jaws 21 towards or away from each other is existing technology. For details, please refer to the clamping and releasing of the three-jaw chuck 2. Therefore, this utility model will not be described in detail here.

[0034] The chuck 2 has an annular groove 22, and the air gun assembly 3 rotates spirally along the annular groove 22. The annular groove 22 is the first working position.

[0035] Furthermore, the air gun assembly 3 is provided with an auxiliary component 4. Through the auxiliary component 4, when the clamping component clamps the clamping part of the electrostatic contact 1, the air gun assembly 3 rotates spirally around the heat shrink tubing 11.

[0036] The chuck 2 also has a hollow cavity, which is connected to the annular groove 22, and the auxiliary component 4 is located inside the hollow cavity.

[0037] Specifically, the auxiliary component 4 includes a rotating rod 42, on which a gear 41 is fixedly connected. The gear 41 can rotate with the rotating rod 42 as the center. The air gun assembly 3 is mounted on the gear 41, and the air gun assembly 3 and the gear 41 are not on the same axis. The air gun assembly 3 can slide up and down relative to the gear 41 so that when the gear 41 rotates, the air gun assembly 3 rotates spirally with the heat shrink tube 11 as the center.

[0038] Furthermore, the auxiliary component 4 also includes a limiting ring 43, which is located on the same center as the gear 41. The top surface of the air gun assembly 3 abuts against the top surface of the limiting ring 43. The top surface of the limiting ring 43 is provided with a first position 431 and a second position 432. The second position 432 is lower than the first position 431. When the air gun assembly 3 is located in the first position 431, the air gun assembly 3 is located at the end of the heat shrink tube 11, ensuring that the end of the heat shrink tube 11 is heated and sealed. When the air gun assembly 3 is located in the second position 432, the air gun assembly 3 is located below the tail of the heat shrink tube 11. Thus, after heating is completed, the air gun assembly 3 is located within the annular groove 22, avoiding interference with the air gun assembly 3 when the clamping component clamps the clamping part of the electrostatic contact 1.

[0039] A connecting rod 23 is fixedly connected to any one of the jaws 21. The connecting rod 23 is connected to a toothed part, which meshes with the gear 41. When the jaw 21 clamps the electrostatic contact 1, the toothed part slides in the first direction A, and the gear 41 rotates, causing the air gun assembly 3 to move from the first position 431 to the second position 432. After the air gun assembly 3 moves to the second position 432, the toothed part disengages from the gear 41, and the connecting rod 23 continues to slide in the first direction A until the jaw 21 clamps the clamping part of the electrostatic contact 1.

[0040] Furthermore, the air gun assembly 3 includes a sliding rod 31 and a hot air gun 32. The sliding rod 31 is fixedly connected to the hot air gun 32. A through hole is provided on the gear 41, and the sliding rod 31 is slidably connected to the through hole. The end of the sliding rod 31 away from the hot air gun 32 abuts against the limiting ring 43, so that when the sliding rod 31 moves from the second position 432 to the first position 431, the sliding rod 31 and the hot air gun 32 slide downward by their own gravity. Specifically, a ball is connected to the end of the sliding rod 31 away from the hot air gun 32, and the sliding rod 31 rolls in contact with the limiting ring 43 through the ball.

[0041] Preferably, the air gun temperature range is 180℃±10℃.

[0042] This invention achieves zero grinding fluid permeability through a double-stage seal of heat shrink tubing and sealing tape, thus eliminating intergranular corrosion. At the same time, the heat shrink tubing 11 provides micro-Newton level flexible clamping to prevent clamping damage, and the spiral heating and end heating methods further enhance the sealing performance.

[0043] Meanwhile, when clamping the electrostatic contact 1, the present invention automatically heats the heat shrink tubing 11 and the sealing tape, eliminating the need for manual heating and saving 80% of auxiliary time.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A grinding device for electrostatic contacts, characterized in that, The device includes a clamping assembly for clamping an electrostatic contact (1). The clamping assembly has a first station on which a heat shrink tube (11) is placed. The heat shrink tube (11) is inserted into the clamping part of the electrostatic contact (1). The clamping assembly has an air gun assembly (3) on which high-temperature hot air can be sprayed. When the clamping assembly moves toward the clamping part of the electrostatic contact (1), the air gun assembly (3) rotates spirally around the heat shrink tube (11) as the center, so that the heat shrink tube (11) is heat-shrinked and tightened and connected to the clamping part of the electrostatic contact (1). So that when the clamping assembly clamps the clamping part of the electrostatic contact (1), the clamping assembly is clamped on the heat shrink tube (11) after it has been heat-shrinked and tightened.

2. The grinding apparatus for electrostatic contacts according to claim 1, characterized in that, The heat shrink tubing (11) is wrapped with a sealing tape.

3. The grinding apparatus for electrostatic contacts according to claim 1, characterized in that, The clamping assembly includes a chuck (2) and multiple jaws (21). The chuck (2) has a sliding groove, and the jaws (21) are slidably connected to the sliding groove. The multiple jaws (21) slide towards each other or away from each other, and the multiple jaws (21) can clamp the clamping part of the electrostatic contact (1).

4. The grinding apparatus for electrostatic contacts according to claim 3, characterized in that, The chuck (2) has an annular groove (22) and the air gun assembly (3) runs along the annular groove (22). The annular groove (22) is the first working position.

5. The grinding apparatus for electrostatic contacts according to claim 3, characterized in that, The air gun assembly (3) is provided with an auxiliary component (4). Through the auxiliary component (4), when the clamping part of the clamping component clamps the electrostatic contact (1), the air gun assembly (3) rotates spirally around the heat shrink tube (11) as the center.

6. The grinding apparatus for electrostatic contacts according to claim 5, characterized in that, The auxiliary component (4) includes a rotating rod (42), on which a gear (41) is fixedly connected. The gear (41) can rotate around the rotating rod (42). The air gun assembly (3) is mounted on the gear (41), and the air gun assembly (3) and the gear (41) are not on the same axis. The air gun assembly (3) can slide up and down relative to the gear (41) so that when the gear (41) rotates, the air gun assembly (3) rotates spirally around the heat shrink tubing (11).

7. The grinding apparatus for electrostatic contacts according to claim 6, characterized in that, The auxiliary component (4) also includes a limiting ring (43). The top surface of the air gun assembly (3) abuts against the limiting ring (43). The top surface of the limiting ring (43) is provided with a first position (431) and a second position (432). The second position (432) is lower than the first position (431). When the air gun assembly (3) is in the first position (431), the air gun assembly (3) is located at the end of the heat shrink tubing (11). When the air gun assembly (3) is in the second position (432), the air gun assembly (3) is located below the tail of the heat shrink tubing (11).

8. The grinding apparatus for electrostatic contacts according to claim 7, characterized in that, A connecting rod (23) is fixedly connected to any one of the jaws (21). A toothed part is connected to the connecting rod (23). The toothed part meshes with the gear (41). When the jaw (21) clamps the electrostatic contact (1), the toothed part slides in the first direction. The gear (41) rotates, causing the air gun assembly (3) to move from the first position (431) to the second position (432). After the air gun assembly (3) moves to the second position (432), the toothed part disengages from the gear (41), and the connecting rod (23) slides in the first direction until the jaw (21) clamps the clamping part of the electrostatic contact (1).

9. The grinding apparatus for electrostatic contacts according to claim 7, characterized in that, The air gun assembly (3) includes a sliding rod (31) and a hot air gun (32). The sliding rod (31) is fixedly connected to the hot air gun (32). A through hole is provided on the gear (41). The sliding rod (31) is slidably connected to the through hole. The end of the sliding rod (31) away from the hot air gun (32) abuts against the limiting ring (43). When the sliding rod (31) moves from the second position (432) to the first position (431), the sliding rod (31) and the hot air gun (32) slide downward by their own gravity.

10. The grinding apparatus for electrostatic contacts according to claim 9, characterized in that, The end of the sliding rod (31) away from the hot air gun (32) is connected to a ball bearing, and the sliding rod (31) makes rolling contact with the limiting ring (43) through the ball bearing.

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