Extrusion type planar multipole magnetizing fixture

CN224773650UActive Publication Date: 2026-09-18HANGZHOU NEW MAGNETIC TECH CO LTD
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Patent Information

Application Number
CN202522314123.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-09-18
Estimated Expiration
2035-10-31

AI Technical Summary

Technical Problem

[0005]本实用新型的目的在于提供一种外凸式平面多极充磁夹具,解决现有技术中存在的无法对组装体一体充磁、只能先充磁后安装的问题

Benefits of technology

本实用新型通过采用与内凹样式机壳结构适配的外凸式铁芯作为充磁核心部件,使其能够深入机壳内部贴合内嵌的环形磁铁,实现对组装完成的机壳与磁铁整体的精准充磁,从根本上解决了现有技术无法对组装体一体充磁、只能先充磁后安装的痛点;同时搭配气缸驱动的顶出结构,可在充磁后便捷取出产品,避免了带磁磁铁人工取放的操作难题,直接规避了先充磁后安装带来的定位困难、效率下滑等问题。

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Abstract

The utility model discloses a kind of convex plane multi-pole magnetizing clamps, comprising: support frame, support frame includes the base and support plate of upper and lower parallel arrangement, four support columns are fixedly connected between base and support plate;Cooling assembly, cooling assembly includes the aluminum sleeve of fixedly connected on the upper end of support plate;Magnetizing assembly, magnetizing assembly includes convex core, convex core is installed in aluminum sleeve inside;Ejection assembly, ejection assembly includes cylinder, cylinder bottom end fixedly connected base and upper end fixedly connected with top disc. By convex core adaptation inner recess style cabinet to realize the integrated magnetization of assembly, it is designed to be matched with stable magnetizing structure, efficient cooling and accurate ejection, which not only avoids the operation problem of magnetic installation, but also ensures the uniformity and stability of magnetization, significantly improves production efficiency and product quality.
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Description

Technical Field

[0001] This utility model relates to the field of magnetizing clamp technology, and discloses a convex planar multi-pole magnetizing clamp. Background Technology

[0002] Magnetization technology for magnetic materials is widely used in electronics, machinery, automobiles, and other fields. Its core principle is to use specific fixtures and magnetization equipment to achieve stable and uniform magnetic field performance in magnetic components. In small, precision mechanical products, concave housings are widely used to house ring magnets due to their compact structure and high space utilization. The assembly of these housings and internal magnets requires magnetization to function.

[0003] Currently, the industry lacks dedicated, compatible jigs for magnetizing concave housings and embedded ring magnets. Conventional magnetizing jigs are mostly flat or concave structures, whose shapes do not match the contours of concave housings. This makes it impossible to penetrate deep into the housing to accurately magnetize the assembled magnets. When magnets are individually magnetized, they become strongly magnetic, easily attracting ferromagnetic impurities from the environment during subsequent installation inside the housing. Furthermore, the attraction between magnets or between magnets and installation tools increases the difficulty of operation. The step-by-step operation process extends the production cycle, increases labor costs, and may also affect the assembly accuracy of the magnets and housing due to collisions during installation.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a convex planar multi-pole magnetizing clamp to solve the problem in the prior art that it is impossible to magnetize the assembly as a whole and that it can only be magnetized before installation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A convex planar multipole magnetizing clamp includes: A support frame, comprising a base and a support plate arranged parallel to each other, with four support columns fixedly connected between the base and the support plate; A cooling assembly, the cooling assembly including an aluminum sleeve fixedly connected to the upper end of a support plate; A magnetizing assembly, the magnetizing assembly including a convex iron core, the convex iron core being installed inside an aluminum sleeve; An ejection assembly, comprising a cylinder, wherein the bottom end of the cylinder is fixedly connected to a base and the upper end is fixedly connected to a top plate.

[0007] Furthermore, the aluminum sleeve has an internal cavity and two symmetrical connectors on the front and rear sides of its outer wall for connecting to external water pipes.

[0008] Furthermore, a wire ring sheath is fixedly connected to the upper surface of the convex iron core.

[0009] Furthermore, the ejector assembly also includes several ejector rods distributed at equal intervals around the circumference, the ejector rods being slidably connected to the convex iron core and the aluminum sleeve.

[0010] Furthermore, the support plate has a channel on its surface, and the top rod passes through the channel and is fixedly connected to the top plate at its bottom end.

[0011] Furthermore, anti-slip pads are fixedly connected to the four corners of the bottom of the base.

[0012] Furthermore, the upper end of the convex iron core is higher than the aluminum sleeve.

[0013] This utility model provides a convex planar multi-pole magnetizing clamp, which has the following advantages: This invention employs a convex iron core adapted to the concave housing structure as the core magnetizing component, allowing it to penetrate deep into the housing and fit snugly against the embedded annular magnet. This enables precise magnetization of the assembled housing and magnet as a whole, fundamentally solving the problem of existing technologies that cannot magnetize the assembly as a whole and can only be installed after magnetization. Simultaneously, the cylinder-driven ejection structure allows for convenient removal of the product after magnetization, avoiding the difficulties of manually handling magnetized magnets and directly circumventing the positioning difficulties and efficiency reduction caused by magnetization before installation. Attached Figure Description

[0014] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0015] Figure 1 This is a front view of a convex planar multipole magnetizing clamp according to the present invention; Figure 2 This is a cross-sectional view of a convex planar multipole magnetizing clamp according to the present invention.

[0016] The components include: 1. Support frame; 101. Base; 102. Support plate; 103. Support column; 104. Anti-slip pad; 2. Cooling assembly; 201. Aluminum sleeve; 202. Cavity; 203. Connector; 3. Magnetizing assembly; 301. Outwardly protruding iron core; 302. Wire ring sheath; 4. Ejection assembly; 401. Cylinder; 402. Top plate; 403. Ejector rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-2 A convex planar multi-pole magnetizing fixture includes: a support frame 1, a cooling assembly 2, a magnetizing assembly 3, and an ejection assembly 4. The support frame 1 serves as the load-bearing foundation of the entire fixture, comprising a horizontally parallel base 101 and a support plate 102. The base 101 is a rectangular plate structure, and the support plate 102 is sized to match the base 101. Four support columns 103 are fixedly connected between the two to ensure the overall stability of the support frame 1 and its ability to withstand the forces and weight of the equipment during the magnetization process. The cooling assembly 2 includes an aluminum sleeve 201, which is made of aluminum alloy with excellent thermal conductivity. The assembly is fixedly connected to the upper surface of the support plate 102; the magnetizing assembly 3 includes a convex iron core 301, which is the core magnetizing component. Its shape is an outwardly convex arc structure that matches the concave style of the casing. It can penetrate deep into the casing and precisely fit with the embedded ring magnet, ensuring that the magnetic field evenly covers the surface of the magnet during magnetization; the ejection assembly 4 includes a cylinder 401, which is vertically set and fixedly connected to the base 101 at the bottom. The top plate 402 is a circular metal plate, and the cylinder 401 drives the top plate 402 to move in the vertical direction.

[0019] Specifically, the aluminum sleeve 201 has an internal cavity 202, and two symmetrical connectors 203 are provided on the front and rear sides of its outer wall to connect to external water pipes. The cavity 202 is distributed around the inner wall of the aluminum sleeve 201 and fits tightly against the outer wall of the convex iron core 301, forming a closed heat dissipation channel. The two connectors 203 are symmetrically arranged on the front and rear sides of the outer wall of the aluminum sleeve 201. The connectors 203 adopt a standard interface structure adapted to water pipes and can be directly connected to the inlet and outlet pipes of the external water circulation system to realize the circulation of cooling medium. During the magnetization process, external cooling water enters the cavity 202 through one of the connectors 203, flows along the surrounding path of the cavity 202, fully absorbs the heat generated by the convex iron core 301 during operation, and then flows out through the other connector 203, completing heat exchange and continuously cooling the magnetization component 3.

[0020] Through the above technical solution, the internal surrounding cavity 202 of the aluminum sleeve 201 is adapted to the external water pipe, realizing the efficient circulation of the cooling medium. This can quickly remove the heat generated during the magnetization process, prevent the iron core from degrading due to high temperature, protect the fixture components from high temperature damage, ensure the stability and continuity of the magnetization process, and thus improve the magnetization quality of the product and the service life of the fixture.

[0021] Specifically, a wire ring sheath 302 is fixedly connected to the upper surface of the convex iron core 301.

[0022] Through the above technical solution, the conductor ring sheath 302 not only achieves insulation protection for the magnetizing conductor, avoiding direct contact between the conductor and the convex iron core 301 that could lead to a short circuit, but also fixes the winding position of the conductor, ensuring the stability of the coil structure, thereby ensuring a uniform distribution of the magnetizing magnetic field and improving the magnetization accuracy of the product; at the same time, it can prevent the conductor from being exposed to the outside and subjected to wear and oxidation, extending the service life of the conductor and ensuring the safety and stability of the magnetization process.

[0023] Specifically, the ejector assembly 4 includes several ejector rods 403 distributed circumferentially at equal intervals. The ejector rods 403 are slidably connected to the convex iron core 301 and the aluminum sleeve 201. A channel is opened on the surface of the support plate 102, through which the ejector rods 403 pass and are fixedly connected to the top plate 402 at their bottom ends. The magnetic ring of the product is precisely positioned by the cooperation of the ejector rods 403 and the convex iron core 301. After magnetization, the cylinder 401 drives the top plate 402 to move upward. The top plate 402 drives the ejector rods 403 to slide upward along the through hole and channel. The upper end of the ejector rods 403 smoothly pushes the magnetic ring and the housing of the product, ejecting the entire product from the convex iron core 301.

[0024] Through the above technical solution, the sliding fit design of the push rod 403 with the convex iron core 301 and aluminum sleeve 201, combined with the through channel on the support plate 102, not only ensures the smoothness and verticality of the ejection movement, but also provides precise guidance for the push rod 403, preventing the product from shifting or tilting during the ejection process; the evenly spaced distribution of the push rod 403 and the matching size design of the product magnetic ring ensure that the product is subjected to uniform force, preventing damage to the magnetized product due to uneven force during ejection.

[0025] Specifically, anti-slip pads 104 are fixedly connected to the four corners of the bottom of the base 101. The upper end of the convex iron core 301 is higher than the aluminum sleeve 201.

[0026] Through the above technical solution, the anti-slip pads 104 at the four corners of the bottom of the base 101 can increase the friction between the clamp and the placement surface, preventing displacement or shaking of the clamp during magnetization and ejection, and ensuring the stability and magnetization accuracy of the equipment. The design of the upper end of the convex iron core 301 being higher than the aluminum sleeve 201 allows its convex part to smoothly extend into the concave housing, ensuring precise contact with the embedded magnet, providing a structural basis for the integrated magnetization of the assembly, and ensuring uniform magnetization.

[0027] In use, first align the concave housing of the assembled ring magnet with the convex part of the convex iron core 301, ensuring it fits smoothly and fits tightly against the convex iron core 301, guaranteeing full contact between the embedded magnet and the iron core. Then, start the magnetization equipment. The magnetizing wire wound in the wire groove of the wire ring sheath 302 generates a magnetic field, which precisely magnetizes the magnet under the action of the convex iron core 301. At the same time, the aluminum sleeve 201 of the cooling component 2 absorbs the heat generated during the magnetization process through the circulating cooling water in the cavity 202, preventing the iron core from overheating. After magnetization is completed, start the cylinder 401 of the ejection component 4. The cylinder 401 drives the top plate 402 to move the push rod 403 upward along the channel of the support plate 102, the aluminum sleeve 201, and the through hole of the convex iron core 301. The upper end of the push rod 403 smoothly pushes the bottom of the product, ejecting the magnetized housing and magnet as a whole, completing one magnetization operation.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and components is omitted in the specific implementation of this disclosure. To ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0030] The sensors are existing products on the market, and their connection and control methods are also existing technologies, so they will not be described in detail here.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A convex planar multi-pole magnetizing clamp, characterized in that, include: The support frame (1) includes a base (101) and a support plate (102) arranged in parallel at the top and bottom, and four support columns (103) are fixedly connected between the base (101) and the support plate (102). Cooling assembly (2), the cooling assembly (2) includes an aluminum sleeve (201) fixedly connected to the upper end of the support plate (102); The magnetizing assembly (3) includes a convex iron core (301) which is installed inside the aluminum sleeve (201). The ejection assembly (4) includes a cylinder (401), the bottom end of which is fixedly connected to a base (101) and the top plate (402) is fixedly connected to the top end.

2. The convex planar multi-pole magnetizing clamp according to claim 1, characterized in that: The aluminum sleeve (201) has a cavity (202) inside and two symmetrical connectors (203) on the front and back sides of the outer wall to connect to the external water pipe.

3. The convex planar multi-pole magnetizing clamp according to claim 1, characterized in that: The upper surface of the convex iron core (301) is fixedly connected with a wire ring sheath (302).

4. The convex planar multi-pole magnetizing clamp according to claim 1, characterized in that: The ejector assembly (4) also includes a number of ejector rods (403) distributed at equal intervals around the circumference, the ejector rods (403) being slidably connected to the convex iron core (301) and the aluminum sleeve (201).

5. A convex planar multi-pole magnetizing clamp according to claim 4, characterized in that: The support plate (102) has a channel on its surface, and the top rod (403) passes through the channel and is fixedly connected to the top plate (402) at its bottom end.

6. The convex planar multi-pole magnetizing clamp according to claim 1, characterized in that: Anti-slip pads (104) are fixedly connected to the four corners of the bottom of the base (101).

7. The convex planar multi-pole magnetizing clamp according to claim 1, characterized in that: The upper end of the convex iron core (301) is higher than the aluminum sleeve (201).