Coil assembly press magnet tooling

Abstract

The present application relates to the technical field of coil assembly, in particular to a coil assembly press magnet tool, which comprises a coil assembly and a magnet, the coil assembly is a rotor structure, a plurality of diagonal grooves are axially formed in the coil assembly, the magnet is fixedly installed in the diagonal grooves, in addition, the tool further comprises a base plate and a positioning clamp, the positioning frame is rigidly constrained, the strong magnet is returned to the center, the shaft rolls and is adsorbed, the magnetic adsorption deviation force is offset, and the axial centering of the magnet is ensured; the glue coating and the comb tooth piece double cleaning mechanism eliminate the dirt pollution and reduce the risk of cracking. The air groove guide surface accurately guides the airflow into the installation gap, forms the air floating effect, and reduces the friction resistance; the tip secondary adsorption transfers the debris to the comb tooth piece, realizes the dynamic self-cleaning in the installation process, and improves the insulation reliability. The magnetic strip adsorption type carrying frame is used in cooperation with the 0-90° overturning mechanism, seamless connection of the rough positioning of the multi-section magnet to the fine installation is realized; the press rod torsion groove is designed to automatically avoid / press down, the single-section installation time is shortened, and the yield is improved.

Description

Technical Field

[0001] This invention relates to the field of coil assembly technology, specifically a coil assembly magnet pressing tool. Background Technology

[0002] By installing magnets in the rotor coil assembly, a static magnetic field can be established and coupled with the stator rotating magnetic field, achieving efficient conversion of electrical energy into mechanical energy, improving the motor's power density and efficiency, and eliminating rotor excitation losses.

[0003] Currently, the installation of magnets and coil assembly slots in permanent magnet motor rotor assembly faces three major technical bottlenecks:

[0004] Firstly, magnetic interference and positioning inaccuracy. When rectangular magnets are pressed into the diagonal slots of the rotor, the strong attraction force generated by the magnetic conductivity of the silicon steel sheets causes the magnets to be pulled in even if they are not aligned, resulting in displacement or collision and breakage. Traditional tooling lacks active demagnetization and dynamic correction mechanisms.

[0005] Secondly, there are issues with mechanical damage and debris contamination. The hardness of the magnet differs from that of the iron core, and excessive pressing can easily cause edge cracking. Simultaneously, metal debris adsorbed on the magnet surface can scratch the slot walls, reducing insulation performance. Existing solutions rely on manual cleaning, which is inefficient and carries a high risk of residue buildup.

[0006] Third, multi-segment installation is inefficient. To suppress eddy currents, multiple magnets need to be installed, but existing equipment requires repeated positioning, making the operation cumbersome. Although hydraulic pressure rods are used to increase thrust, the issues of segmented connection accuracy and continuity remain unresolved, hindering mass production yield.

[0007] In view of this, the present invention proposes a coil assembly magnet pressing tool, which solves the above-mentioned technical problems. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a coil assembly magnet pressing fixture; thereby solving the three major technical bottlenecks in the installation of magnets and coil assembly slots in the current permanent magnet motor rotor assembly.

[0009] The technical solution adopted by the present invention to solve its technical problem is a coil assembly pressing magnet tooling, which includes a coil assembly and a magnet. The coil assembly is a rotor structure. Multiple diagonal slots are axially opened in the coil assembly. The magnet is fixedly installed in the diagonal slots. In addition, it also includes a base plate and a positioning clamp.

[0010] The coil assembly is fixedly installed in the middle of the base plate, and base posts are fixedly installed around the perimeter of the base plate. Pressure rods are hydraulically installed inside the base posts and are in contact with magnets.

[0011] The positioning clamp is slidably installed on the substrate. There are multiple positioning clamps, which are arranged in a "U" shape and straddle both sides of the diagonal groove. A positioning frame is fixedly installed on the positioning clamp through a branch pipe.

[0012] On the other hand, the inner wall of the positioning frame is adapted to the inner wall of the diagonal groove, and the magnet enters the diagonal groove from the position of the positioning frame.

[0013] On the other hand, the upper end of the positioning frame is installed with a return shaft made of a strong magnetic material through a rotational fit. The outer contour of the return shaft includes an adhesive coating layer.

[0014] On the other hand, air grooves are circumferentially formed on the inner wall of the positioning frame. An air passage connected to several air grooves is arranged inside the positioning frame, and the air passage is connected to the branch pipe.

[0015] On the other hand, a guiding surface for guiding air flow into the gap of the diagonal groove is arranged at one end of the air groove close to the diagonal groove.

[0016] On the other hand, a conical tip facing the axis direction of the return shaft is arranged at the upper end of the positioning frame, and the tip is also made of a strong magnetic material.

[0017] On the other hand, a comb-shaped sheet is fixedly installed at the outer wall position of the positioning frame, and the upper part of the comb-shaped sheet is resiliently bent and adhered to the surface of the adhesive coating layer.

[0018] On the other hand, a "C"-shaped carrier frame is rotatably installed on the positioning frame. The carrier frame can deflect within a range of 0 to 90 degrees on the positioning frame, and the magnet is placed inside the carrier frame.

[0019] On the other hand, the carrier frame is made of a non-magnetic material. A magnetic strip magnetically adsorbed to the magnet is arranged on the inner wall of the upper middle part of the carrier frame. Ball-shaped grooves for installing ball bearings are evenly formed at the lower part of the carrier frame.

[0020] On the other hand, a flat-shaped downward pressing surface matched with the end of the magnet is arranged at the end of the pressure rod. A torsion groove is formed on the outer wall of the telescopic part of the pressure rod, and a protrusion matched with the torsion groove is fixedly arranged at the inner wall position of the base column.

[0021] Advantages of the present invention:

[0022] Precise anti-magnetic positioning and zero-damage installation: Through the rigid constraint of the positioning frame combined with the rolling adsorption of the strong magnetic return shaft, the magnetic adsorption offset force is offset to ensure the axial alignment of the magnet; the double cleaning mechanism of the adhesive coating layer and the comb-shaped sheet eliminates debris pollution and reduces the risk of cracking.

[0023] Air-floating drag reduction and dynamic dust removal: The guiding surface of the air groove accurately guides the air flow into the installation gap to form an air-floating effect and reduce the frictional resistance; the tip secondarily adsorbs and transfers debris to the comb-shaped sheet to achieve dynamic self-cleaning during the installation process and improve the insulation reliability.

[0024] High-efficiency segmented assembly automation: The magnetic strip adsorption carrier frame, combined with the 0-90° flipping mechanism, achieves seamless connection from multi-segment magnetic coarse positioning to fine assembly; the pressure bar torsion groove design automatically avoids / presses down, shortens the installation time of a single segment, and improves the yield rate. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the first working state of the present invention;

[0027] Figure 2 for Figure 1 Enlarged diagram of point A in the diagram;

[0028] Figure 3 for Figure 1 A top-down view;

[0029] Figure 4 This is a schematic diagram of the second working state of the present invention;

[0030] Figure 5 for Figure 4 A top-down view;

[0031] Figure 6 This is a schematic diagram showing the positional relationship between the coil assembly and the substrate in this invention;

[0032] Figure 7 This is a schematic diagram showing the positional relationship between the pressure bar and the transport frame in this invention;

[0033] Figure 8 This is a schematic diagram showing the positional relationship between the carrier frame and the positioning clamp in this invention;

[0034] Figure 9 This is a schematic diagram showing the positional relationship between the magnet and the positioning clip in this invention;

[0035] In the picture:

[0036] 1. Coil assembly; 2. Magnet; 11. Diagonal slot; 3. Substrate; 31. Base post; 32. Pressure rod; 4. Positioning clamp; 41. Branch tube; 42. Positioning frame; 43. Alignment shaft; 431. Adhesive layer; 44. Air groove; 45. Air passage; 46. Tip; 441. Guide surface; 421. Comb tooth plate; 47. Carrier frame; 471. Magnetic strip; 472. Ball bearing; 33. Torsion groove. Detailed Implementation

[0037] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following is a summary.

[0038] The present invention will be further described in conjunction with specific embodiments.

[0039] This invention provides a coil assembly magnet pressing fixture, which solves the three major technical bottlenecks in the installation of magnets and coil assembly slots in the current permanent magnet motor rotor assembly.

[0040] like Figures 1 to 5 ,as well as Figure 7 As shown, a preferred embodiment of the present invention provides a coil assembly pressing magnet fixture, including a coil assembly 1 and a magnet 2. The coil assembly 1 is a rotor structure. Multiple diagonal slots 11 are axially formed in the coil assembly 1. The magnet 2 is fixedly installed in the diagonal slots 11. In addition, it also includes a base plate 3 and a positioning clamp 4.

[0041] like Figure 6 As shown, the coil assembly 1 is fixedly installed in the middle of the substrate 3. Base posts 31 are fixedly installed around the perimeter of the substrate 3. Pressure rods 32 are hydraulically installed inside the base posts 31 and are in contact with magnets 2.

[0042] By installing magnets 2 in the rotor coil assembly 1, a static magnetic field can be established and coupled with the stator rotating magnetic field to achieve efficient conversion of electrical energy to mechanical energy, improve the power density and efficiency of the motor, and eliminate rotor excitation losses.

[0043] During this process, the installation of magnet 2 needs to be closely matched with the diagonal slot 11 on coil assembly 1. To improve installation efficiency, an automatic pressing hydraulic rod 32 structure is provided to provide sufficient thrust for the installation of magnet 2, thereby improving installation efficiency.

[0044] Furthermore, such as Figures 7 to 9 As shown, the positioning clamp 4 is slidably mounted on the base plate 3. Multiple positioning clamps 4 are provided and are arranged in a "U" shape on both sides of the diagonal groove 11. A positioning frame 42 is fixedly installed on the positioning clamp 4 through the branch pipe 41. The inner wall of the positioning frame 42 is adapted to the inner wall of the diagonal groove 11. The magnet 2 enters the diagonal groove 11 from the position of the positioning frame 42.

[0045] During operation, the coil assembly 1 is first placed in the middle of the substrate 3 and its position is fixed. Then, the positioning clamp 4 is pushed to move in the axial direction of the coil assembly 1 so that the positioning frame 42 coincides with the position of the diagonal slot 11. Then, the position of the positioning clamp 4 is locked. At this time, during the placement of the magnet 2, the magnet 2 enters the diagonal slot 11 through the positioning frame 42. The magnet 2 is fixed and supported by the positioning frame 42 on all sides, so it cannot deflect or shake. This overcomes the negative effect of the magnetic attraction in the direction of the coil assembly 1, improves the accuracy of the positioning and installation process, and at the same time protects the installation end and edge of the magnet 2 to avoid breakage or damage caused by bumps or friction.

[0046] Furthermore, such as Figure 9As shown, a strong magnetic alignment shaft 43 is mounted on the upper end of the positioning frame 42 by means of rotational engagement, and the outer contour of the alignment shaft 43 includes an adhesive layer 431.

[0047] To further improve the smoothness of magnet 2 installation, a centering shaft 43 is provided. The centering shafts 43, which are set opposite each other on both sides, can actively attract magnet 2 during contact. Utilizing their own rolling action, magnet 2 can be self-centered and adaptively rolled along with the sliding of magnet 2, reducing friction on the contact surface. The provided adhesive layer 431 can adsorb and clean the surface debris or dust of magnet 2 during rolling against the outer wall of magnet 2, avoiding debris attracted by the magnet 2's own surface during transportation or storage, which would cause negative interference to the installation process and subsequent use.

[0048] Furthermore, such as Figure 9 As shown, the inner wall of the positioning frame 42 is provided with air grooves 44 in the circumferential direction, and the interior of the positioning frame 42 is provided with air passages 45 that are connected to several air grooves 44, and the air passages 45 are connected to the branch pipes 41.

[0049] During the installation of magnet 2, air is introduced into branch pipe 41 through an external air source. The air then diffuses into air groove 44 through air channel 45. The blowing action of the airflow can further clean the surface of magnet 2. At the same time, the airflow can penetrate into the installation gap between magnet 2 and diagonal groove 11, and further reduce the resistance during the installation of magnet 2 through air buoyancy, thereby improving installation efficiency.

[0050] Furthermore, such as Figure 9 As shown, the air groove 44 is provided with a guide surface 441 at one end near the diagonal groove 11 for guiding airflow into the gap of the diagonal groove 11.

[0051] The designed guide surface 441 can maximize the flow of air downwards into the installation gap between the magnet 2 and the diagonal groove 11, thereby improving the drag reduction effect.

[0052] Furthermore, such as Figure 9 As shown, the upper end of the positioning frame 42 is provided with a tapered tip 46 facing the axis of the correction axis 43, and the tip 46 is also made of a strong magnetic material.

[0053] The tip 46 can continuously generate an attractive force on the adhesive layer 431. When debris from the surface of the magnet 2 adheres to the adhesive layer 431, the secondary adsorption effect of the tip 46 can remove and transfer the debris from the adhesive layer 431, thereby improving the working efficiency of the adhesive layer 431.

[0054] Furthermore, such as Figure 9As shown, a comb tooth piece 421 is fixedly installed on the outer wall of the positioning frame 42, and the upper part of the comb tooth piece 421 is bent resiliently and adheres to the surface of the glue coating layer 431.

[0055] The provided comb tooth piece 421 realizes the secondary cleaning effect on the surface of the glue coating layer 431 through physical contact, further improving its service life.

[0056] Furthermore, as Figures 7 to 9 shown, a "C"-shaped carrier frame 47 is rotatably installed on the positioning frame 42. The carrier frame 47 can deflect within 0 to 90 degrees on the positioning frame 42, and the magnet 2 is placed in the carrier frame 47.

[0057] The magnet 2 is installed in a multi-stage and batch-by-batch manner to reduce the generation of eddy currents. During the actual installation process, first, the carrier frame 47 is placed in a horizontal position. Then, the magnet 2 is placed by an operator or a manipulator. Subsequently, the carrier frame 47 is pushed to turn vertically, thereby driving the magnet 2 to reach the position directly above the positioning frame 42. Then, through the pressing action of the pressing rod 32, the magnet 2 is pushed into and installed inside the diagonal groove 11. In this way, the installation operation of the multi-stage magnet 2 is carried out reciprocally. Through the turning action of the carrier frame 47, this process avoids the problem of frequent precise positioning between the multi-stage magnet 2 and the diagonal groove 11. Only by putting the magnet 2 into the carrier frame 47 for rough positioning, the magnet 2 can be deeply and precisely positioned through the combined action of the alignment shaft 43 and the positioning frame 42 during the sliding process, improving the work efficiency and reducing the installation difficulty of the magnet 2.

[0058] Furthermore, as Figure 8 and Figure 9 shown, the carrier frame 47 is made of a non-magnetic material. A magnetic strip 471 magnetically adsorbed to the magnet 2 is provided on the inner wall of the upper and middle part of the carrier frame 47. Ball-shaped grooves for installing balls 472 are evenly arranged at the lower part of the carrier frame 47.

[0059] The provided magnetic strip 471 can actively adsorb the magnet 2 after the magnet 2 is placed, realizing the transfer function. It is strip-shaped, reducing the side wall resistance during the sliding installation process of the magnet 2. The provided balls 472 can further reduce the friction force. When the middle and lower parts of the magnet 2 enter the diagonal groove 11, the carrier frame 47 can be horizontally turned to carry out the operation of taking the next magnet 2. The whole action process is coherent and moderate, reducing the installation difficulty of the magnet 2.

[0060] Furthermore, as Figure 2 、 Figure 7 and Figure 8As shown, the end of the pressure rod 32 is provided with a flat pressing surface that matches the end of the magnet 2. The outer wall of the telescopic part of the pressure rod 32 is provided with a torsion groove 33, and the inner wall of the base column 31 is fixedly provided with a protrusion that matches the torsion groove 33.

[0061] A spiral twisted section is provided in the twist groove 33, so that the pressure rod 32 deflects during the lifting and sliding process through the contact between the protrusion and the twisted section in the twist groove 33. During the placement of the magnet 2, the pressure rod 32 moves upward and deflects to one side. When the magnet 2 reaches the position above the diagonal groove 11, the pressure rod 32 moves downward, and the lower pressing surface of its end enters the inner side of the transport frame 47 and contacts the upper end of the magnet 2, realizing the downward pressing and installation of the magnet 2. The operation is automatic, simple and convenient.

[0062] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coil assembly pressing magnet fixture, comprising a coil assembly (1) and a magnet (2), characterized in that, The coil assembly (1) is a rotor structure. Multiple diagonal grooves (11) are axially formed in the coil assembly (1). The magnet (2) is fixedly installed in the diagonal groove (11). In addition, it further includes a substrate (3). The coil assembly (1) is fixedly installed in the middle of the substrate (3). Base columns (31) are fixedly installed at the four peripheral positions of the substrate (3). A pressure rod (32) is movably installed in the base column (31) by means of hydraulic pressure. The pressure rod (32) contacts the magnet (2). Positioning clips (4). The positioning clips (4) are slidably installed on the substrate (3). There are multiple positioning clips (4), which are arranged in a "U" shape and are erected on both sides of the diagonal groove (11). A positioning frame (42) is fixedly installed on the positioning clip (4) through a branch pipe (41). The upper end of the positioning frame (42) is installed with a rectifying shaft (43) made of a strong magnetic material through a rotational fit. The outer contour of the rectifying shaft (43) includes an adhesive coating (431). An air groove (44) is circumferentially formed in the inner wall of the positioning frame (42). An air passage (45) connected to a number of air grooves (44) is arranged inside the positioning frame (42), and the air passage (45) is connected to the branch pipe (41). A guiding surface (441) for guiding air flow into the gap of the diagonal groove (11) is arranged at one end of the air groove (44) close to the diagonal groove (11). A "C"-shaped carrier frame (47) is rotatably installed on the positioning frame (42). The carrier frame (47) can deflect within 0 to 90 degrees on the positioning frame (42). The magnet (2) is placed in the carrier frame (47). The end of the pressure rod (32) is provided with a flat downward pressing surface that mates with the end of the magnet (2). A torsion groove (33) is formed on the outer wall of the telescopic part of the pressure rod (32). A protrusion that mates with the torsion groove (33) is fixedly arranged at the inner wall position of the base column (31).

2. The coil assembly magnetizing fixture according to claim 1, characterized in that: The inner wall of the positioning frame (42) is adapted to the inner wall of the diagonal groove (11). The magnet (2) enters the diagonal groove (11) from the position of the positioning frame (42).

3. The coil assembly magnetizing fixture according to claim 1, characterized in that: A conical tip (46) facing the axis direction of the rectifying shaft (43) is arranged at the upper end of the positioning frame (42), and the tip (46) is also made of a strong magnetic material.

4. The coil assembly magnetizing fixture according to claim 1, characterized in that: A comb-shaped sheet (421) is fixedly installed at the outer wall position of the positioning frame (42). The upper part of the comb-shaped sheet (421) is resiliently bent and adheres to the surface of the adhesive coating (431).

5. The coil assembly magnetizing fixture according to claim 1, characterized in that: The carrier frame (47) is made of a non-magnetic material. A magnetic strip (471) magnetically adsorbed to the magnet (2) is arranged on the inner wall of the middle and upper part of the carrier frame (47). Spherical grooves for installing balls (472) are evenly formed at the lower part of the carrier frame (47).

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