Opening device

Abstract

The utility model relates to the technical field of PCB production, and specifically discloses a clamping opening device. The device comprises a hanger with a clamping unit and a clamping opening module with a movable assembly; the clamping unit comprises a fixed clamp head and a movable clamp head hinged to the fixed clamp head, the fixed clamp head has a first end and a second end, the movable clamp head has a third end and a fourth end, the movable clamp head can swing between a clamping position and a loosening position, when in the clamping position, the first end and the third end clamp the two sides of a plate-shaped product respectively, when swinging towards the loosening position, the third end is away from the first end, each end is embedded with a permanent magnet, the first end and the third end are adsorbed, and the second end and the fourth end are adsorbed; the rotating body on the movable assembly is provided with a clamping opening pressing piece corresponding to the clamping unit, the clamping opening pressing piece is provided with two pressing contacts, which press against the third end and the fourth end respectively, and the rotation of the rotating body can drive the clamping unit to take and place the plate-shaped product. The device can adapt to the soaking environment of special medicine, and makes the plate-shaped product bear a mild force when clamping.

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, and in particular to clamping equipment. Background Technology

[0002] With the continuous advancement of technology, more and more PCB (Printed Circuit Board) products using special materials as substrates are emerging. These special PCB products exhibit a variety of characteristics; some are fragile and ultra-thin, while others require special chemicals to treat them during the manufacturing process.

[0003] In traditional processing of sheet-like products, clamps with a pivot spring structure are commonly used. However, for PCB products with the aforementioned special characteristics, this traditional clamping method reveals several limitations. Firstly, special chemicals may corrode the metal components within the pivot spring structure, damaging the clamp and rendering it unusable, making the use of special chemicals for product processing extremely difficult. Secondly, when clamping products, pivot spring clamps often struggle to apply force gently and gradually, easily causing fragile or ultra-thin products to crack due to uneven stress, resulting in product scrap and increased production costs.

[0004] Therefore, existing shaft spring structure clamps cannot meet the processing requirements of PCB products made of special materials, and there is an urgent need for a clamping device. Utility Model Content

[0005] The purpose of this invention is to provide a clamping device that can adapt to the soaking environment of special chemicals, and to ensure that plate-shaped products are subjected to gentle force when clamping them, so as to avoid scrapping due to force problems and improve production quality and efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An opening clamping device is used to process plate-shaped products. The plane containing the plate-shaped product is perpendicular to the feeding direction, and the feeding direction is perpendicular to the vertical direction. The opening clamping device includes a bracket and an opening clamping module. The bracket includes several clamping units, each clamping unit including a fixed clamp and a movable clamp. The fixed clamp has a first end and a second end, and the movable clamp has a third end and a fourth end. The middle part of the movable clamp is hinged to the middle part of the fixed clamp. The movable clamp can swing between a clamping position and a releasing position around the vertical direction. When the movable clamp is in the clamping position, the first end and the third end respectively clamp the two sides of the plate-shaped product. When the movable clamp swings towards the releasing position, the third end moves away from the plate-shaped product. The first end is provided with a first permanent magnet, the second end with a second permanent magnet, the third end with a third permanent magnet, and the fourth end with a fourth permanent magnet. The first permanent magnet and the third permanent magnet attract each other, and the second permanent magnet and the fourth permanent magnet attract each other. The clamping module includes a movable component, which includes a rotating body. The rotating body is provided with a clamping pressure member. Each clamping unit corresponds to at least one clamping pressure member. The clamping pressure member is fixed with two clamping contacts, one pressing against the third end and the other pressing against the fourth end. The rotating body can rotate in a vertical direction to drive the clamping unit to clamp or release the plate-shaped product.

[0008] As an optional technical solution for the clamping device, the hanger has two frame side plates, which are symmetrically arranged about the plate-shaped product. All the clamping units are arranged at intervals along the vertical direction on the frame side plates. The second end is fixed to the frame side plate, and the clamping unit is used to clamp the edge of the plate-shaped product.

[0009] As an optional technical solution for the clamping device, there are two clamping modules, each of which corresponds to one of the frame side plates.

[0010] As an optional technical solution for the clamping device, the hanging frame also includes a frame base plate, the two ends of the top of the frame base plate are respectively fixed to the bottom of the two frame side plates, and the top of the frame base plate is also provided with a number of limiting members, which are used to support the bottom of the plate-shaped product.

[0011] As an optional technical solution for the clamping device, the movable component can move closer to or further away from the hanger along the propulsion direction.

[0012] As an optional technical solution for the clamping device, the movable component further includes a clamping bracket and a rotation drive unit disposed on the clamping bracket. The rotating body is movably connected to the clamping bracket, and the rotation drive unit is used to drive the rotating body to rotate around the vertical direction. The clamping module further includes a support component, and the clamping bracket is movably connected to the support component.

[0013] As an optional technical solution for the clamping device, the support assembly includes a support frame and a propulsion drive unit disposed on the support frame. The output end of the propulsion drive unit is fixed to the clamping bracket, and the clamping bracket and the support frame slide together along the propulsion direction.

[0014] As an optional technical solution for the clamping device, the clamping contact is a cylindrical part that extends vertically and whose side surface contacts the outer surface of the moving clamp.

[0015] As an optional technical solution for the clamping device, the first end is recessed with a first groove, and a first sealing plate is provided in the first groove. The first sealing plate and the groove wall of the first groove form a first cavity, and the first permanent magnet is disposed in the first cavity; and / or, the second end is recessed with a second groove, and a second sealing plate is provided in the second groove. The second sealing plate and the groove wall of the second groove form a second cavity, and the second permanent magnet is disposed in the second cavity; and / or, the third end is recessed with a third groove, and a third sealing plate is provided in the third groove. The third sealing plate and the groove wall of the third groove form a third cavity, and the third permanent magnet is disposed in the third cavity; and / or, the fourth end is recessed with a fourth groove, and a fourth sealing plate is provided in the fourth groove. The fourth sealing plate and the groove wall of the fourth groove form a fourth cavity, and the fourth permanent magnet is disposed in the fourth cavity.

[0016] As an optional technical solution for the clamping device, the outer surface of the hanger, except for the clamping unit, is covered with an insulating layer.

[0017] The beneficial effects of this utility model are:

[0018] This clamping device embeds permanent magnets at each end of the fixed and movable clamps. The magnetic attraction of these magnets allows the clamps to close and open, avoiding the use of traditional metal spring torque clamps. This facilitates the use of special etching solutions for metals, allowing for the smooth processing of sheet-like products. It solves the problem of unreliable use of special etching solutions for metals and easily achieves precise oscillation of the movable clamp between the clamping and releasing positions. It is suitable for scenarios involving the treatment of sheet-like products with special etching solutions. Two pressing contacts on the clamping clamp press against the third and fourth ends of the movable clamp, respectively. As the rotating body rotates vertically along a predetermined trajectory, it precisely controls the oscillation of the movable clamp between the clamping and releasing positions, achieving clamping or releasing of sheet-like products. Continuous contact force from both sides allows for complete control of the speed and force of the movable clamp's vertical rotation, enabling smooth and precise clamping or opening actions, thus achieving precise control over the speed and force of the movable clamp's rotation. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the clamping device provided in an embodiment of the present invention from a first-view perspective;

[0020] Figure 2 This is a structural schematic diagram of the clamping device provided in an embodiment of the present invention from a second perspective;

[0021] Figure 3 yes Figure 2 A magnified view of part A in the image;

[0022] Figure 4 This is a structural schematic diagram of the hanger and plate-shaped product provided in this embodiment of the utility model;

[0023] Figure 5 yes Figure 4 Exploded view of a portion of B;

[0024] Figure 6 This is a schematic diagram of the structure of the support component and the movable component provided in the embodiment of this utility model.

[0025] In the picture:

[0026] X, direction of propulsion; Z, vertical direction;

[0027] 100. Support assembly; 110. Propulsion drive unit; 120. Support frame; 121. Slide rail;

[0028] 200. Movable component; 210. Clamping bracket; 211. Sliding block; 220. Rotation drive unit; 230. Rotating body; 240. Clamping clamping element; 241. Holding contact;

[0029] 300. Hanger; 310. Fixed clamp; 311. First permanent magnet; 312. First sealing plate; 313. Second permanent magnet; 314. Second sealing plate; 320. Moving clamp; 321. Third permanent magnet; 322. Third sealing plate; 323. Fourth permanent magnet; 324. Fourth sealing plate; 330. Rotating shaft; 340. Frame base plate; 350. Limiting component; 360. Frame side plate;

[0030] 900. Plate-shaped products. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] like Figures 1 to 6 As shown, this embodiment provides an opening clamping device for processing a plate-shaped product 900. The plane containing the plate-shaped product 900 is perpendicular to the pushing direction X, and the pushing direction X is perpendicular to the vertical direction Z. The opening clamping device includes a hanger 300 and an opening clamping module. The hanger 300 includes several clamping units, each clamping unit including a fixed clamp 310 and a movable clamp 320. The fixed clamp 310 has a first end and a second end, and the movable clamp 320 has a third end and a fourth end. The middle part of the movable clamp 320 is hinged to the middle part of the fixed clamp 310. The movable clamp 320 can swing around the vertical direction Z between a clamping position and a releasing position. When the movable clamp 320 is in the clamping position, the first end and the third end respectively clamp the two sides of the plate-shaped product 900. When the movable clamp 320 swings toward the releasing position, the third end... At the first end, a first permanent magnet 311 is embedded; at the second end, a second permanent magnet 313 is embedded; at the third end, a third permanent magnet 321 is embedded; and at the fourth end, a fourth permanent magnet 323 is embedded. The first permanent magnet 311 and the third permanent magnet 321 attract each other, and the second permanent magnet 313 and the fourth permanent magnet 323 attract each other. The clamping module includes a movable component 200, which includes a rotating body 230. The rotating body 230 is provided with a clamping pressure member 240. Each clamping unit corresponds to at least one clamping pressure member 240. The clamping pressure member 240 is fixedly connected to two clamping contacts 241, one pressing against the third end and the other pressing against the fourth end. The rotating body 230 can rotate around the vertical direction Z to drive the clamping unit to clamp or release the plate-shaped product 900.

[0036] This clamping device embeds permanent magnets at each end of the fixed clamp 310 and the movable clamp 320. The magnetic attraction of these permanent magnets allows the clamps to close and open, avoiding the use of traditional metal spring torque clamps. This facilitates the use of special etching solutions for metals, allowing for the smooth application of these solutions to plate-shaped products 900. It solves the problem of unreliable use of special etching solutions for metals and easily achieves precise oscillation of the movable clamp 320 between the clamping and releasing positions. It is suitable for scenarios involving the treatment of plate-shaped products 900 with special etching solutions. Two pressing contacts 241 on the clamping pressure member 240 press against the third and fourth ends of the movable clamp 320, respectively. When the rotating body 230 rotates along a predetermined trajectory in the vertical direction Z, it can precisely control the oscillation of the movable clamp 320 in the vertical direction Z between the clamping and releasing positions, thus achieving the clamping or releasing of the plate-shaped product 900. By continuously contacting and applying force on both sides, the speed and force of the moving chuck 320 rotating around the vertical Z direction can be fully controlled, allowing the chuck to smoothly and accurately perform clamping or opening actions, thereby achieving precise control over the speed and force of the moving chuck 320's rotation.

[0037] The aforementioned permanent magnets achieve the slow opening and closing of the clamping unit through mutual attraction, replacing the traditional spring and avoiding the situation where the spring force damages the plate-shaped product 900.

[0038] Specifically, the board-shaped product 900 is a PCB. Using clamping equipment, mass production of PCBs with special substrates or those treated with special chemicals can be successfully achieved, realizing unique production technologies and significantly improving product competitiveness.

[0039] In this embodiment, a rotating shaft 330 extending in the vertical direction Z is fixedly connected to the middle of the fixed chuck 310, and the movable chuck 320 is rotatably engaged with the rotating shaft 330.

[0040] In this embodiment, the hanger 300 has two frame side plates 360, which are symmetrically arranged about the plate-shaped product 900. All clamping units are arranged at Z intervals along the vertical direction on the frame side plates 360, and the second end is fixed to the frame side plates 360. The clamping units are used to clamp the edge of the plate-shaped product 900.

[0041] The two frame side plates 360 of the hanger 300 are symmetrically arranged about the plate-shaped product 900. The clamping units are arranged at Z intervals along the vertical direction on the frame side plates 360. This layout enables the clamping units to stably clamp the edge of the plate-shaped product 900, improving the stability and reliability of clamping, ensuring the positional accuracy of the plate-shaped product 900 during processing, which is conducive to improving production quality and facilitating standardized batch production operations.

[0042] Furthermore, there are two clamping modules, each corresponding to a frame side panel 360 degrees.

[0043] The system is equipped with two clamping modules, each corresponding to a frame side plate 360. This allows for simultaneous opening and closing of the clamping units on both sides of the hanger 300, enabling the clamps on both sides of the plate-shaped product 900 to open or close synchronously. This makes the clamping process more efficient and synchronized, improving the working efficiency and stability of the clamping equipment and facilitating the mass production of the plate-shaped product 900.

[0044] Furthermore, the bracket 300 also includes a frame base plate 340, the two ends of the top of the frame base plate 340 are respectively fixed to the bottom of two frame side plates 360, and the top of the frame base plate 340 is also provided with several limiting members 350, which are used to support the bottom of the plate-shaped product 900.

[0045] The frame base plate 340 of the hanger 300 is provided with a limiting member 350 at the top to support the bottom of the plate-shaped product 900. During the clamping process, it provides additional support for the plate-shaped product 900, further ensuring the stability of the plate-shaped product 900 on the hanger 300, preventing the plate-shaped product 900 from shaking or falling during processing, and helping to improve production safety and product processing quality.

[0046] In this embodiment, the movable component 200 can move closer to or further away from the hanger 300 along the propulsion direction X.

[0047] The movable component 200 can move closer to or further away from the bracket 300 along the propulsion direction X. The distance between the movable component 200 and the bracket 300 can be flexibly adjusted according to actual production needs, so that the clamping device can be flexibly adjusted in different working conditions, which facilitates accurate clamping and releasing operations on the plate-shaped product 900 and improves production flexibility.

[0048] Furthermore, the active component 200 also includes an opening clamp bracket 210 and a rotation drive unit 220 disposed on the opening clamp bracket 210. The rotating body 230 is movably connected to the opening clamp bracket 210. The rotation drive unit 220 is used to drive the rotating body 230 to rotate around the vertical direction Z. The opening module also includes a support component 100. The opening clamp bracket 210 is movably connected to the support component 100.

[0049] The rotation drive unit 220 of the movable component 200 drives the rotating body 230 to rotate around the vertical direction Z, providing power for the clamping unit to move via the clamping clamping component 240. This ensures that the movement of the rotating body 230 has a clear power source and transmission structure, guaranteeing the stability and accuracy of its rotation. This better enables the opening and closing control of the clamp, allowing the clamping process to be automated and precise, thus improving production efficiency. The rotating body 230 is movably connected to the clamping bracket 210, providing stable support for its rotation and ensuring that the rotating body 230 can drive the clamping unit to move according to design requirements. The clamping bracket 210 is movably connected to the support component 100, allowing the movable component 200 to move smoothly along the pushing direction X, while also ensuring the overall smooth movement of the movable component 200.

[0050] Furthermore, the support assembly 100 includes a support frame 120 and a propulsion drive unit 110 disposed on the support frame 120. The output end of the propulsion drive unit 110 is fixedly connected to the clamping bracket 210, and the clamping bracket 210 and the support frame 120 slide in the propulsion direction X.

[0051] The propulsion drive unit 110 of the support component 100 drives the clamping bracket 210 to slide along the propulsion direction X, providing stable and precise propulsion power for the movement of the movable component 200 along the propulsion direction X. This enables precise control of the movement of the movable component 200 along the propulsion direction X, ensuring that the movable component 200 can accurately approach or move away from the hanger 300, thereby ensuring that the clamping pressure member 240 can accurately press against the moving chuck 320, achieving precise control of the opening and closing of the clamping unit.

[0052] Specifically, a slide rail 121 is fixedly connected to the support frame 120, and a sliding block 211 is fixedly connected to the clamping bracket 210. The sliding block 211 slides in cooperation with the slide rail 121.

[0053] In this embodiment, the pressing contact 241 is a cylindrical part, the pressing contact 241 extends in the vertical direction Z, and the side of the pressing contact 241 contacts the outer surface of the moving clamp 320.

[0054] The holding contact 241 is a cylindrical part and its side contacts the outer surface of the moving chuck 320. The above contact method can ensure that the force exerted by the holding contact 241 on the moving chuck 320 is uniform and stable, and effectively presses against the moving chuck 320; it can also reduce the wear and friction between the holding contact 241 and the moving chuck 320, extend the service life of the component, and ensure the smooth rotation of the moving chuck 320.

[0055] In one embodiment of this invention, a first groove is recessed at the first end, and a first sealing plate 312 is provided in the first groove. The first sealing plate 312 and the groove wall of the first groove form a first cavity, and a first permanent magnet 311 is disposed in the first cavity. A second groove is recessed at the second end, and a second sealing plate 314 is provided in the second groove. The second sealing plate 314 and the groove wall of the second groove form a second cavity, and a second permanent magnet 313 is disposed in the second cavity. A third groove is recessed at the third end, and a third sealing plate 322 is provided in the third groove. The third sealing plate 322 and the groove wall of the third groove form a third cavity, and a third permanent magnet 321 is disposed in the third cavity. A fourth groove is recessed at the fourth end, and a fourth sealing plate 324 is provided in the fourth groove. The fourth sealing plate 324 and the groove wall of the fourth groove form a fourth cavity, and a fourth permanent magnet 323 is disposed in the fourth cavity.

[0056] The fixed chuck 310 and the movable chuck 320 each have a cavity formed by a groove and a sealing plate to hold the permanent magnet. This protects the permanent magnet from corrosion by chemicals or other external factors, ensuring the magnetic stability of the permanent magnet and thus ensuring the normal clamping and opening functions of the clamping unit.

[0057] In other embodiments of this example, only a maximum of three of the first cavity, second cavity, third cavity, and fourth cavity are limited.

[0058] In this embodiment, the outer surface of the hanger 300, except for the clamping unit, is covered with an insulating layer.

[0059] Except for the clamping unit, the outer surface of the hanger 300 is made of insulating material, completely isolating the current path between the hanger 300 body and the chemicals and plate-shaped product 900, thus avoiding electrochemical corrosion problems. Furthermore, the insulating material will not chemically react with corrosive chemicals, solving the problem of chemical composition imbalance caused by material corrosion in traditional metal hangers 300. It also prevents metal debris from contaminating the chemical tank, significantly improving the service life and treatment consistency of the chemicals. This design prevents chemical contamination caused by metal ions dissolving in the special chemicals and oxidation of the plate-shaped product 900 surface.

[0060] For example, the propulsion drive unit 110 is a cylinder, and the rotation drive unit 220 is a motor. Cylinders and motors are conventional configurations in the art, and their specific structures and working principles are common knowledge in the art and well known to those skilled in the art, so they will not be described in detail here.

[0061] 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 clamping device for processing plate-shaped products (900), wherein the plane containing the plate-shaped products (900) is perpendicular to the pushing direction (X), and the pushing direction (X) is perpendicular to the vertical direction (Z), characterized in that, The clamping device includes: The hanger (300) includes several clamping units, each clamping unit including a fixed clamp (310) and a movable clamp (320). The fixed clamp (310) has a first end and a second end, and the movable clamp (320) has a third end and a fourth end. The middle part of the movable clamp (320) is hinged to the middle part of the fixed clamp (310). The movable clamp (320) can swing between a clamping position and a releasing position around the vertical direction (Z). When the movable clamp (320) is in the clamping position, the first end and the third end respectively clamp the [unclear text - possibly a typo]. On both sides of the plate-shaped product (900), when the movable clamp (320) swings toward the release position, the third end moves away from the first end. The first end is embedded with a first permanent magnet (311), the second end is embedded with a second permanent magnet (313), the third end is embedded with a third permanent magnet (321), and the fourth end is embedded with a fourth permanent magnet (323). The first permanent magnet (311) and the third permanent magnet (321) attract each other, and the second permanent magnet (313) and the fourth permanent magnet (323) attract each other. The clamping module includes a movable component (200), which includes a rotating body (230). The rotating body (230) is provided with a clamping pressure member (240). Each clamping unit corresponds to at least one clamping pressure member (240). The clamping pressure member (240) is fixedly connected to two clamping contacts (241), one pressing against the third end and the other pressing against the fourth end. The rotating body (230) can rotate around the vertical direction (Z) to drive the clamping unit to clamp or release the plate-shaped product (900).

2. The clamping device according to claim 1, characterized in that, The hanger (300) has two frame side plates (360) which are symmetrically arranged about the plate-shaped product (900). All the clamping units are arranged at intervals along the vertical direction (Z) on the frame side plates (360). The second end is fixed to the frame side plate (360). The clamping unit is used to clamp the edge of the plate-shaped product (900).

3. The clamping device according to claim 2, characterized in that, There are two clamping modules, each of which corresponds to one of the frame side plates (360).

4. The clamping device according to claim 3, characterized in that, The hanger (300) also includes a frame base plate (340), the two ends of the top of the frame base plate (340) are respectively fixed to the bottom of the two frame side plates (360), and the top of the frame base plate (340) is also provided with a number of limiting members (350), which are used to support the bottom of the plate-shaped product (900).

5. The clamping device according to claim 1, characterized in that, The active component (200) can move closer to or further away from the hanger (300) along the propulsion direction (X).

6. The clamping device according to claim 5, characterized in that, The movable component (200) further includes an opening clamp bracket (210) and a rotation drive unit (220) disposed on the opening clamp bracket (210). The rotating body (230) is movably connected to the opening clamp bracket (210). The rotation drive unit (220) is used to drive the rotating body (230) to rotate around the vertical direction (Z). The opening clamp module further includes a support component (100). The opening clamp bracket (210) is movably connected to the support component (100).

7. The clamping device according to claim 6, characterized in that, The support assembly (100) includes a support frame (120) and a propulsion drive unit (110) disposed on the support frame (120). The output end of the propulsion drive unit (110) is fixed to the clamping bracket (210). The clamping bracket (210) and the support frame (120) slide in cooperation along the propulsion direction (X).

8. The clamping device according to claim 1, characterized in that, The pressing contact (241) is a cylindrical part, the pressing contact (241) extends in the vertical direction (Z), and the side of the pressing contact (241) is in contact with the outer surface of the moving clamp (320).

9. The clamping device according to claim 1, characterized in that, The first end is recessed with a first groove, and a first sealing plate (312) is provided in the first groove. The first sealing plate (312) and the groove wall of the first groove form a first cavity, and the first permanent magnet (311) is disposed in the first cavity; and / or, The second end is recessed with a second groove, and a second sealing plate (314) is provided in the second groove. The second sealing plate (314) and the groove wall of the second groove form a second cavity, and the second permanent magnet (313) is disposed in the second cavity; and / or, The third end is recessed with a third groove, and a third sealing plate (322) is provided in the third groove. The third sealing plate (322) and the groove wall of the third groove form a third cavity, and the third permanent magnet (321) is disposed in the third cavity; and / or, The fourth end is recessed with a fourth groove, and a fourth sealing plate (324) is provided in the fourth groove. The fourth sealing plate (324) and the groove wall of the fourth groove form a fourth cavity, and the fourth permanent magnet (323) is provided in the fourth cavity.

10. The clamping device according to any one of claims 1-9, characterized in that, The outer surface of the hanger (300), except for the clamping unit, is covered with an insulating layer.

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