Multistage magnetizing fixture with anti-creeping structure

Abstract

The present application relates to magnetizing fixture technical field, and disclose a kind of multistage magnetizing fixture with leakage protection structure, including multistage magnetizing machine body and the fixture body equipped with magnetizing member, the present application when leakage occurs in multistage magnetizing machine body, by setting leakage protection component, current on fixture body can be guided to ground through side and bottom, insulation damage or line aging occurs in part magnetizing machine working process, it can lead to fixture body electrification, by side and bottom double grounding design, leakage current can be directly guided into ground along the shortest path, avoid the electric shock accident when operator contacts electrified body, simultaneously by being provided with three large resistance resistance blocks and a small resistance resistance block on fixture body, when artificial touches close to the side of three large resistance resistance blocks, since the resistance of three large resistance resistance blocks is larger, it can prevent the problem that current is too large to cause operator's personal injury occurs, and ensure its safety to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of magnetizing clamp technology, specifically a multi-stage magnetizing clamp with a leakage-proof structure. Background Technology

[0002] Multipole magnetization is the process of magnetizing two or more pairs of magnets on the same magnet. Multipole magnetization technology is a complex and multifaceted technical skill, related to the working characteristics of the magnetizer, the design of the magnetizing head (or magnetizing wire clamp), and the performance indicators of the magnet itself. Currently, the main method for magnetizing permanent magnets is using pulsed magnetic fields. The basic principle is to use a large current to discharge instantaneously, generating a strong pulsed magnetic field to magnetize the permanent magnet. The device for generating the pulsed magnetic field typically consists of a capacitor bank, a thyristor, a charge / discharge control circuit, and a magnetizing head (or magnetizing coil).

[0003] The patent application with publication number CN108231330A includes two parts: a magnetizing fixture and a terminal block. The magnetizing fixture carries the product to be magnetized and performs radial bipolar magnetization on both sides of the product simultaneously. The terminal block connects the magnetizing assembly and the power supply. The bipolar magnetizing fixture provided in this solution can magnetize bonded ferrite magnetic sheets or bonded neodymium iron boron magnetic sheets, enabling simultaneous magnetization of both sides of the product with identical magnetic characteristics. It can be used regardless of which side faces out during assembly, thus eliminating the need for face recognition during product assembly, reducing labor time, and preventing sensor failure caused by poor assembly.

[0004] In most of the aforementioned patents or existing technologies, multi-stage magnetizers, when used for extended periods with magnetizing fixtures containing multiple cylindrical materials, utilize these fixtures, which are high-voltage, high-current devices. During operation, leakage can occur due to insulation damage or environmental factors. Once the fixtures are energized, operators directly contact the energized parts when handling workpieces. If the leakage voltage exceeds 36V (the threshold for human perception), it can lead to electric shock, burns, muscle spasms, or even falls and injuries, increasing the risk of death. Furthermore, most magnetizers rely on manual handling of the magnetizing fixtures, which inevitably results in the fixtures not being in the magnetization center position. This offset alters the direction and intensity distribution of the magnetic field, causing disordered magnetic pole orientation, insufficient residual magnetism, or uneven magnetization of the magnetic material, directly affecting the electromagnetic performance of the product. Summary of the Invention

[0005] The problem this invention aims to solve is that existing magnetizing clamps are unable to avoid leakage.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a multi-stage magnetizing clamp with an anti-leakage structure, comprising a multi-stage magnetizer body and a clamp body equipped with magnetizing components. A support base is fixedly mounted on the multi-stage magnetizer body, a guide rail is slidably mounted on the support base, an electric push rod is mounted on the support base, and the output end of the electric push rod is fixedly connected to the top of the guide rail. A magnetizer base is fixedly mounted on the multi-stage magnetizer body below the guide rail, and the clamp body is mounted on the magnetizer base. A rubber push block is fixedly mounted at the bottom of the guide rail. A positioning component is mounted on the multi-stage magnetizer body. An anti-leakage component is mounted on the multi-stage magnetizer body. A rubber column is fixedly mounted at the bottom of the guide rail. A plug-in rod is slidably mounted on the magnetizer base, and a magnetizer base is fixedly mounted on the plug-in rod.

[0007] The positioning component includes four positioning rods that are rotatably connected to the magnetizing base, and each positioning rod is fixedly provided with a guide arc strip;

[0008] The leakage protection assembly includes four conductive seats fixed to four positioning rods, each conductive seat being located below a guide arc-shaped strip. Each positioning rod is fixedly provided with an arc-shaped disk. A grounding seat is sleeved on the outside of the arc-shaped disk on the magnetizing base. The grounding seat is grounded through an electric wire. Conductive patches are provided on both the guide arc-shaped strip and the conductive seats. A vortex-shaped conductive element is provided on the magnetizing base. An arc-shaped disc spring is fixedly provided between the bottom end of the magnetizing base and the inner wall of the magnetizing base. The vortex-shaped conductive element and the arc-shaped disc spring are connected by a wire. A patch seat that contacts the arc-shaped disc spring is fixedly provided on each arc-shaped disk.

[0009] Preferably, the support base is provided with two support columns, and the guide rail base is slidably connected to the support columns. The guide rail base has movable holes that match the support columns, and the rubber block is located above the clamp body.

[0010] Preferably, the positioning component includes four lower trapezoidal blocks that are slidably connected to the magnetizing base. Each lower trapezoidal block is fixedly provided with a transmission rod, which is inserted into the positioning rotating rod. A guide block is fixedly provided on the arc-shaped outer wall of the transmission rod, and an arc-shaped guide groove matching the guide block is provided on the positioning rotating rod.

[0011] Preferably, the magnetizing base has four square slots that match the four lower trapezoidal blocks, the positioning rotating rod has through holes that match the transmission rod, and the four upper trapezoidal blocks are respectively located above the four lower trapezoidal blocks.

[0012] Preferably, each of the grounding bases has an arc-shaped groove that matches the arc-shaped disk, the positioning rotating rod is "L"-shaped, and the guide arc strip has a trapezoidal cross-section.

[0013] Preferably, the four positioning rotating rods are arranged in a circular array. Each conductive seat has a first electrical adhesive strip fixedly installed on the side near the fixture body. The first electrical adhesive strip is connected to the arc-shaped disk by a wire. Each guide arc-shaped strip is provided with a second electrical adhesive strip, and each second electrical adhesive strip is connected to the arc-shaped disk by a wire.

[0014] Preferably, the fixture body is provided with three large-value resistor blocks and one small-value resistor block, and the three large-value resistor blocks and the one small-value resistor block are arranged in a circular array, and the three large-value resistor blocks and the one small-value resistor block are respectively in contact with four conductive seats.

[0015] Preferably, a rubber pad is fixedly provided on the inner wall of the magnetizing base, and the bottom end of the arc-shaped disc spring is fixedly connected to the top end of the rubber pad. A return spring is fixedly provided between the magnetizing base and the inner wall of the magnetizing base.

[0016] Preferably, the multi-stage magnetizer body is equipped with two start button bodies, and the two start button bodies are connected to the electric push rod via wires.

[0017] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0018] (1) When leakage occurs in the multi-stage magnetizer body, the present invention can guide the current on the clamp body to the ground through the side and bottom by setting up an anti-leakage component. In the process of some magnetizers, insulation damage or aging of the circuit will cause the clamp body to become live. Through the double grounding design of the side and bottom, the leakage current can be directly introduced to the ground along the shortest path, avoiding electric shock accidents when the operator touches the live body. At the same time, by setting up three large resistance blocks and one small resistance block on the clamp body, when the operator touches the side of the three large resistance blocks, the large resistance of the three large resistance blocks can prevent the large current from causing personal injury to the operator and ensure its safety to a certain extent.

[0019] (2) The present invention drives the rubber block to descend by activating the electric push rod, and at the same time pushes the fixture body to descend. With the cooperation of the positioning component, the fixture body can gradually move to the center position of the top of the magnetizing seat. Automatic positioning does not require manual intervention to adjust the fixture position, reducing the downtime of the production line and making the magnetizing process seamlessly connected with other production links, thus speeding up the overall production rhythm. In batch manufacturing scenarios, the stability and repeatability of automatic positioning can ensure the smoothness of continuous operation, which is especially suitable for high-speed production lines, significantly improving the unit time output and eliminating accidental deviations in manual operation (such as visual errors or operator fatigue). This is especially important for the quality control of high-precision magnetic components. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the distribution structure of the four upper trapezoidal blocks of the present invention;

[0022] Figure 3 This is a schematic diagram of the front structure of the magnetizing base of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the magnetizing base of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure between the positioning component and the leakage protection component of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified view of part A in the image;

[0026] Figure 7 This is a schematic diagram of the cross-sectional structure of the transmission rod of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified view of part B in the image;

[0028] Figure 9 This is a schematic diagram of the connection structure between the arc-shaped guide groove and the guide block of the present invention;

[0029] Figure 10 For the present invention Figure 9 A magnified view of part C;

[0030] Figure 11 This is a schematic diagram of the cross-sectional structure of the positioning rod of the present invention;

[0031] Figure 12 This is a top view of the fixture body of the present invention.

[0032] In the diagram: 1. Multi-stage magnetizer body; 11. Magnetizer base; 111. Connecting rod; 112. Magnetizing base; 12. Support base; 13. Guide rail base; 131. Rubber block; 14. Start button body; 15. Clamp body;

[0033] 2. Positioning component; 21. Upper trapezoidal block; 22. Lower trapezoidal block; 23. Transmission rod; 231. Guide block; 24. Positioning rotating rod; 241. Arc-shaped guide groove; 25. Guide arc strip;

[0034] 3. Leakage protection component; 31. Conductive base; 32. Arc-shaped disk; 321. First electrical patch strip; 322. Second electrical patch strip; 311. Large resistance value resistor block; 312. Small resistance value resistor block; 33. Grounding base; 34. Vortex conductive component; 35. Arc-shaped disc spring; 36. Patch base. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0037] like Figures 1 to 12 As shown, the present invention provides a multi-stage magnetizing clamp with an anti-leakage structure, comprising a multi-stage magnetizer body 1 and a clamp body 15 equipped with magnetizing components. A support base 12 is fixedly mounted on the multi-stage magnetizer body 1, a guide rail seat 13 is slidably mounted on the support base 12, an electric push rod is mounted on the support base 12, and the output end of the electric push rod is fixedly connected to the top end of the guide rail seat 13. A magnetizer base 11 is fixedly mounted on the multi-stage magnetizer body 1 below the guide rail seat 13, and the clamp body 15 is mounted on the magnetizer base 11. A rubber push block is fixedly mounted at the bottom end of the guide rail seat 13. A positioning component 2 is mounted on the multi-stage magnetizer body 1. An anti-leakage component 3 is mounted on the multi-stage magnetizer body 1. A rubber column block 131 is fixedly mounted at the bottom end of the guide rail seat 13. A plug-in rod 111 is slidably mounted on the magnetizer base 11, and a magnetizing seat 112 is fixedly mounted on the plug-in rod 111.

[0038] The positioning component 2 includes four positioning rods 24 that are rotatably connected to the magnetizing base 11, and each positioning rod 24 is fixedly provided with a guide arc strip 25;

[0039] The leakage protection component 3 includes four conductive seats 31 fixed on four positioning rotating rods 24 respectively, and each conductive seat 31 is located below the guide arc strip 25. Each positioning rotating rod 24 is fixedly provided with an arc disk 32. A grounding seat 33 is sleeved on the outside of the arc disk 32 on the magnetizing base 11. The grounding seat 33 is grounded through a wire. Both the guide arc strip 25 and the conductive seat 31 are provided with conductive patches. A vortex conductive element 34 is provided on the magnetizing base 112. An arc disc spring 35 is fixedly provided between the bottom end of the magnetizing base 112 and the inner wall of the magnetizing base 11. The vortex conductive element 34 and the arc disc spring 35 are connected by a wire. Each arc disk 32 is fixedly provided with a patch seat 36 that contacts the arc disc spring 35.

[0040] The support base 12 is provided with two support columns, and the guide rail 13 is slidably connected to the support columns. The guide rail 13 is provided with movable holes that match the support columns, and the rubber block 131 is located above the clamp body 15.

[0041] The positioning component 2 includes four lower trapezoidal blocks 22 that are slidably connected to the magnetizing base 11. Each lower trapezoidal block 22 is fixedly provided with a transmission rod 23, and the transmission rod 23 is inserted into the positioning rotating rod 24. A guide block 231 is fixedly provided on the arc-shaped outer wall of the transmission rod 23, and an arc-shaped guide groove 241 matching the guide block 231 is provided on the positioning rotating rod 24.

[0042] The magnetizing base 11 has four square slots that match the four lower trapezoidal blocks 22, and the positioning rotating rod 24 has through holes that match the transmission rod 23. The four upper trapezoidal blocks 21 are respectively located above the four lower trapezoidal blocks 22.

[0043] Each grounding base 33 has an arc-shaped groove that matches the arc-shaped disk 32, the positioning rotating rod 24 is "L" shaped, and the guide arc-shaped strip 25 has a trapezoidal cross section;

[0044] The four positioning rotating rods 24 are arranged in a ring array. Each conductive seat 31 is fixedly provided with a first electric adhesive strip 321 on the side near the clamp body 15. The first electric adhesive strip 321 is connected to the arc-shaped disk 32 by a wire. Each guide arc-shaped bar 25 is provided with a second electric adhesive strip 322. Each second electric adhesive strip 322 is connected to the arc-shaped disk 32 by a wire.

[0045] The fixture body 15 is provided with three large-value resistor blocks 311 and one small-value resistor block 312. The three large-value resistor blocks 311 and the one small-value resistor block 312 are arranged in a ring array. The three large-value resistor blocks 311 and the one small-value resistor block 312 are respectively in contact with four conductive seats 31.

[0046] A rubber pad is fixedly installed on the inner wall of the magnetizing base 11, and the bottom end of the arc-shaped disc spring 35 is fixedly connected to the top end of the rubber pad. A return spring is fixedly installed between the magnetizing base 112 and the inner wall of the magnetizing base 11.

[0047] Two start button bodies 14 are installed on the multi-stage magnetizer body 1, and the two start button bodies 14 are connected to the electric push rod through wires. A torsion spring is fixedly installed between each positioning rotating rod 24 and the magnetizer base 11.

[0048] When magnetization of the fixture body 15 is required, the electric push rod can be activated by simultaneously pressing two start buttons on the body 14. This activates the electric push rod, causing the guide rail seat 13, which is fixedly connected to its output end, to slide onto the support column. Simultaneously, it pushes the rubber block 131 fixed to the bottom of the guide rail seat 13 downwards. When the multiple upper trapezoidal blocks 21 fixed to the bottom of the guide rail seat 13 contact the multiple lower trapezoidal blocks 22 on the magnetizing machine base 11, the multiple lower trapezoidal blocks 22 can be pushed to slide simultaneously into the square groove on the magnetizing machine base 11. This simultaneously causes the transmission rod 23 fixed to one side of the lower trapezoidal block 22 to slide towards the positioning rotating rod 24. At this time, the guide block 231 fixed to the arc-shaped outer wall of the transmission rod 23 can... The positioning rod 24 slides inside the arc-shaped guide groove 241 on the inner wall of the positioning rod 24, which can drive the positioning rod 24 to rotate around the connection position with the magnetizing base 11. At this time, the rotation of the positioning rod 24 can drive the guide arc strip 25 fixed on the positioning rod 24 to rotate. At this time, the inclined part on the outer wall of the guide arc strip 25 can contact the clamp body 15, which can push the clamp body 15 to gradually move to the center position on the magnetizing base 112, thereby achieving the purpose of positioning. During this process, the conductive base 31 fixed on the positioning rod 24 can be flipped into the magnetizing base 11. When the positioning is completed, the rubber column 131 can push the clamp body 15 into the magnetizing base 11 for magnetization.

[0049] During the magnetization process, releasing the two start buttons on the main body 14 causes the electric push rod to move the rubber column 131 at the bottom of the guide rail seat 13 upward. Simultaneously, the clamp body 15 on the magnetization seat 112 moves upward under the force of the return spring, stretching the arc-shaped disc spring 35. During this process, the four upper trapezoidal blocks 21 separate from the four lower trapezoidal blocks 22, and with the cooperation of the torsion spring, the four guide arc-shaped strips 25 flip upward. Then, the four conductive seats 31 flip to a position contacting the outer wall of the clamp body 15. At this time, the first electrical pad strips 321 on the four conductive seats 31 contact the outer wall of the clamp body 15, and the pad seats 36 on the four arc-shaped discs 32 contact the arc-shaped disc spring 35. When leakage occurs in the multi-stage magnetizer body 1, the multi-stage magnetizer body 1 automatically cuts off the power, while the clamp body 15... A portion of the current flows through the vortex conductive element 34 at the bottom of the clamp body 15 into the arc-shaped disc spring 35, then through the arc-shaped disc spring 35 into the arc-shaped disk 32, and finally through the wire on the grounding base 33 to the ground. At the same time, the current in the clamp body 15 can also flow through the three large-value resistor blocks 311 and the small-value resistor block 312 set on the side of the clamp body 15 into the conductive base 31, then through the first electrical adhesive strip 321 on the conductive base 31 into the arc-shaped disk 32, and finally through the grounding base 33 to the ground. When a person touches the side near the three large-value resistor blocks 311, the large resistance of the three large-value resistor blocks 311 can prevent the large current from causing personal injury to the operator and ensure safety to a certain extent, thus achieving the function of preventing leakage.

[0050] The working principle and usage process of this invention are as follows: When magnetizing the fixture body 15, the electric push rod can be started by pressing two start buttons on the body 14 simultaneously. This causes the guide rail seat 13, which is fixedly connected to its output end, to slide onto the support column. At the same time, the rubber column block 131 fixed to the bottom of the guide rail seat 13 is pushed downward. When the multiple upper trapezoidal blocks 21 fixed at the bottom of the guide rail seat 13 come into contact with the multiple lower trapezoidal blocks 22 on the magnetizing machine base 11, the multiple lower trapezoidal blocks 22 can be pushed to slide simultaneously into the square groove opened on the magnetizing machine base 11. At the same time, the transmission rod 23 fixed to one side of the lower trapezoidal block 22 slides towards the positioning rotating rod 24. At this time, the guide block 231 fixed to the arc-shaped outer wall of the transmission rod 23... The positioning rod 24 can slide within the arc-shaped guide groove 241 on its inner wall, allowing it to rotate around its connection point with the magnetizing base 11. This rotation causes the guide arc-shaped strip 25 fixed to the positioning rod 24 to rotate, allowing the inclined portion of the guide arc-shaped strip 25's outer wall to contact the clamp body 15. This pushes the clamp body 15 to gradually move to the center position on the magnetizing base 112, achieving positioning. During this process, the conductive seat 31 fixed to the positioning rod 24 can flip into the magnetizing base 11. When positioning is complete, the rubber block 131 pushes the clamp body 15 into the magnetizing base 11 for magnetization. When magnetization is finished, the clamp body 15 can be removed through... Releasing the two start buttons on the main body 14 causes the electric push rod to move the rubber column 131 at the bottom of the guide rail seat 13 upward. Simultaneously, the clamp body 15 on the magnetizing seat 112 moves upward under the force of the return spring, stretching the arc-shaped disc spring 35. During this process, the four upper trapezoidal blocks 21 separate from the four lower trapezoidal blocks 22. With the cooperation of the torsion spring, the four guide arc-shaped strips 25 flip upward, causing the four conductive seats 31 to flip to a position contacting the outer wall of the clamp body 15. At this time, the first electrical patch strips 321 on the four conductive seats 31 contact the outer wall of the clamp body 15, and the patch seats 36 on the four arc-shaped discs 32 contact the arc-shaped disc spring 35. When multiple... When the multi-stage magnetizer body 1 experiences a leakage, it can automatically cut off the power. However, a portion of the current remains on the clamp body 15. This current can then enter the arc-shaped disc spring 35 through the vortex conductive element 34 at the bottom of the clamp body 15, and then enter the arc-shaped disk 32 through the arc-shaped disc spring 35. Finally, it flows to the ground through the wire on the grounding seat 33. Simultaneously, the current on the clamp body 15 can enter the conductive seat 31 through the three large-value resistor blocks 311 and the small-value resistor block 312 set on the side of the clamp body 15, and then enter the arc-shaped disk 32 through the first electrical patch strip 321 on the conductive seat 31. Finally, it is discharged to the ground through the grounding seat 33.

[0051] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A multi-stage magnetizing fixture with an anti-creeping structure, comprising a multi-stage magnetizing machine body (1) and a fixture body (15) equipped with a magnetizing piece, characterized in that: The multistage magnetizer body (1) is fixedly provided with a support seat (12), the support seat (12) is slidably provided with a guide rail seat (13), an electric push rod is installed on the support seat (12), and the output end of the electric push rod is fixedly connected with the top end of the guide rail seat (13), the multistage magnetizer body (1) is fixedly provided with a magnetizer seat (11) below the guide rail seat (13), and a clamp body (15) is arranged on the magnetizer seat (11), a rubber pushing block is fixedly arranged at the bottom end of the guide rail seat (13), a positioning assembly (2) is arranged on the multistage magnetizer body (1), an anti-creeping assembly (3) is arranged on the multistage magnetizer body (1), a rubber column block (131) is fixedly arranged at the bottom end of the guide rail seat (13), a plug-in rod (111) is slidably arranged on the magnetizer seat (11), and a magnetizing seat (112) is fixedly arranged on the plug-in rod (111). The positioning assembly (2) comprises four positioning rotating rods (24) rotatably connected with the magnetizer seat (11), and a guide arc-shaped strip (25) is fixedly arranged on each positioning rotating rod (24). The anti-creeping assembly (3) comprises four conductive seats (31) fixedly arranged on the four positioning rotating rods (24), respectively, each conductive seat (31) is located below the guide arc-shaped strip (25), an arc-shaped disc (32) is fixedly arranged on each positioning rotating rod (24), a grounding seat (33) is sleeved with the arc-shaped disc (32) on the outer side of the magnetizer seat (11), the grounding seat (33) is grounded through a wire, conductive patches are arranged on the guide arc-shaped strip (25) and the conductive seat (31), a vortex conductive piece (34) is arranged on the magnetizing seat (112), an arc-shaped disc spring (35) is fixedly arranged between the bottom end of the magnetizing seat (112) and the inner wall of the magnetizer seat (11), and the vortex conductive piece (34) and the arc-shaped disc spring (35) are connected through a wire, and a patch seat (36) in contact with the arc-shaped disc spring (35) is fixedly arranged on each arc-shaped disc (32).

2. The multi-stage magnetizing fixture with the anti-creeping structure according to claim 1, characterized in that: Two support columns are arranged on the support seat (12), and the guide rail seat (13) is slidably connected with the support columns, the guide rail seat (13) is provided with movable holes matched with the support columns, and the rubber column block (131) is located above the clamp body (15).

3. The multi-stage magnetizing fixture with the anti-creeping structure according to claim 1, characterized in that: The positioning assembly (2) comprises four lower trapezoidal blocks (22) slidably connected with the magnetizer seat (11), a transmission rod (23) is fixedly arranged on each lower trapezoidal block (22), and the transmission rod (23) is inserted into the positioning rotating rod (24), a guide block (231) is fixedly arranged on the arc-shaped outer wall of the transmission rod (23), and the positioning rotating rod (24) is provided with an arc-shaped guide groove (241) matched with the guide block (231).

4. The multi-stage magnetizing fixture with the anti-creeping structure according to claim 3, characterized in that: The magnetizer seat (11) is provided with four square grooves matched with the four lower trapezoidal blocks (22), the positioning rotating rod (24) is provided with through holes matched with the transmission rod (23), and four upper trapezoidal blocks (21) are located above the four lower trapezoidal blocks (22), respectively.

5. The multi-stage magnetizing fixture with the anti-creeping structure according to claim 1, characterized in that: Each of the grounding seats (33) is provided with an arc-shaped slot matched with the arc-shaped disc (32), the positioning rotating rod (24) is in "L" shape, and the guide arc-shaped strip (25) is in trapezoidal section.

6. The multi-stage magnetizing fixture with leakage protection according to claim 1, characterized in that: Four positioning rotating rods (24) are arranged in annular array, each of the conductive seats (31) is fixedly provided with a first electric patch strip (321) near one side of the clamp body (15), the first electric patch strip (321) is connected with the arc-shaped disc (32) through electric wires, each of the guide arc-shaped strips (25) is provided with a second electric patch strip (322), and each of the second electric patch strips (322) is connected with the arc-shaped disc (32) through electric wires.

7. The multi-stage magnetizing fixture with leakage protection according to claim 1, characterized in that: Three large resistance blocks (311) and one small resistance block (312) are arranged on the clamp body (15) in annular array, and the three large resistance blocks (311) and the one small resistance block (312) are respectively in contact with the four conductive seats (31).

8. The multi-stage magnetizing fixture with leakage protection according to claim 1, characterized in that: A rubber pad is fixedly arranged on the inner wall of the magnetizing machine base (11), the bottom end of the arc-shaped disc spring (35) is fixedly connected with the top end of the rubber pad, and a return spring is fixedly arranged between the magnetizing seat (112) and the inner wall of the magnetizing machine base (11).

9. The multi-stage magnetizing fixture with leakage prevention structure according to claim 1, characterized in that: Two start button bodies (14) are installed on the multi-stage magnetizing machine body (1) and connected with the electric push rod through electric wires.

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