Tool for testing adsorption force of magnet and adsorption force testing equipment with same

Abstract

The utility model discloses a tool for testing magnet adsorption force and adsorption force testing equipment with the same, a first assembly in the tool for testing magnet adsorption force comprises a positioning plate and a cover plate, the positioning plate comprises a supporting plate and a side plate, the cover plate is provided with a top hole and a cambered surface embedding groove, and the side plate is provided with a bottom hole. The second assembly is arranged on the side plate, the end of the spherical iron piece positioned on the supporting plate is embedded into the cambered surface embedding groove and extends into the top hole, the second assembly comprises a limiting plate, a positioning groove used for positioning the magnetic loop assembly is formed in the side, away from the cover plate, of the limiting plate, the first assembly is arranged at the moving end, and the cover plate is located at the lower end; the limiting plate is arranged at the fixed end, the positioning groove is formed downwards, the magnetic circuit assembly on the second assembly is adsorbed and fixed through the spherical iron piece in the first assembly, the adsorption force change of the magnetic circuit assembly and the spherical iron piece is completed through movement of the first assembly relative to the second assembly, and automatic discharging of the magnetic circuit assembly is achieved after testing is completed. The loading and unloading efficiency of the magnetic circuit assembly can be improved so as to improve the test efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of magnet processing equipment, in particular to a tool for testing the adsorption force of a magnet and an adsorption force testing device having the tool. Background Art

[0002] In some electronic products, magnets are used to achieve their basic functions, such as outdoor high-definition cameras that use magnetic return components. Figure 7 As shown, the outdoor high-definition camera will include a magnetic return component 1a and a spherical iron piece 2a fixed in corresponding structures and postures. In order to test the adsorption performance of the magnetic return component 1a installed in the same outdoor high-definition camera and ensure that the magnetic return component 1a has the same adsorption force, the adsorption force between it and the spherical iron piece 2a is used as the inspection standard.

[0003] In the prior art, there is a magnet attraction test device with application number 202322240828.1, which discloses that after the first magnet and the second magnet are clamped and fixed respectively, the initial elastic force of the positioning plate is adjusted by an elastic force adjustment mechanism. When the elastic force of the positioning plate changes, the magnitude of the magnetic force represented by the corresponding scale line changes accordingly to ensure the test accuracy. However, when it is necessary to test multiple different magnetic return assemblies 1a with the spherical iron piece 2a as the base part as mentioned above, the magnetic return assemblies 1a need to be constantly replaced, and the constant clamping (loading and unloading) thereof will lead to relatively low test efficiency; moreover, indicating the magnitude of the magnetic force (adsorption force) by the corresponding scale line can easily lead to inaccurate test data. Utility Model Content

[0004] The purpose of the utility model is to provide a tool for testing the adsorption force of a magnet and an adsorption force testing device having the same. The spherical iron piece in the first component can be used to adsorb and fix the magnetic return component on the second component, and the adsorption force change between the magnetic return component and the spherical iron piece can be completed by utilizing the movement of the first component relative to the second component. After the test is completed, the magnetic return component can be automatically unloaded, which can improve the loading and unloading efficiency of the magnetic return component and improve the testing efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a tool for testing the adsorption force of a magnet, comprising:

[0006] The first component is used to fix the spherical iron piece. The first component includes a positioning plate and a cover plate. The positioning plate includes a support plate for supporting the spherical iron piece and side plates arranged on both sides of the support plate. The cover plate is provided with a top hole penetrating its body, and an arc-shaped embedding groove is provided on the side of the top hole. The cover plate is arranged on the side plate to embed the end of the spherical iron piece positioned on the support plate into the arc-shaped embedding groove, and the end of the spherical iron piece extends into the top hole until the cross section at its vertex is flush with the end surface of the cover plate.

[0007] A second component is used to position the magnetic return component, and the second component includes a limit plate, and a positioning groove for positioning the magnetic return component is provided on a side of the limit plate away from the cover plate;

[0008] The first component is arranged at the movable end and the cover plate is located at the lower end, the limit plate is arranged at the fixed end and the positioning groove is arranged downward, when the cover plate abuts or is adjacent to the limit plate, the spherical iron piece and the magnetic return component are adsorbed to fix the magnetic return component in the positioning groove, and when the cover plate is away from the limit plate, the magnetic return component is separated from the positioning groove.

[0009] As a further optimization, the support plate includes a base plate and an arc panel arranged on the base plate for supporting the spherical iron piece. The arc panel matches the arc inner wall of the spherical iron piece to ensure the stability of the support. A pair of side plates are arranged on the base plate and located on both sides of the arc panel.

[0010] As a further optimization, the bottom plate is arranged at an angle.

[0011] As a further optimization, a positioning block matching the groove on the spherical iron piece is provided on the side wall of the arc panel, which can ensure that the spherical iron piece is accurately positioned and correctly positioned on the arc panel.

[0012] As a further optimization, a recessed section is provided at the upper end of the arc panel.

[0013] As a further optimization, a convex portion is provided on one of the pair of side panels, and a recess matching the convex portion is provided on the cover panel, thereby preventing the cover panel from being placed incorrectly.

[0014] As a further optimization, an insert block is provided on one of the pair of side panels, and a slot matching the insert block is provided on the cover panel, so that precise positioning can be achieved before the cover panel and the positioning plate are fixed.

[0015] As a further optimization, the cover plate is fixed to the positioning plate by a locking column that passes through its body and extends into the side plate.

[0016] As a further optimization, the second component also includes a plug-in made of plastic material. The limiting plate is provided with a fixing hole that passes through its body, and the cover plate is provided with a fixing groove. The plug-in passes through the fixing hole and extends into the fixing groove, and is interference-connected with the two respectively.

[0017] As a further optimization, the positioning plate, cover plate and limit plate are all made of aluminum.

[0018] The present utility model also provides an adsorption force testing device, including a tensile mechanics testing machine and the above-mentioned tooling for magnet adsorption force testing, wherein the first component is arranged at the moving end of the tensile mechanics testing machine and the cover plate is located at the lower end, the limit plate is arranged on a bracket located on the workbench of the tensile mechanics testing machine, and the positioning groove is arranged downward.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The spherical iron piece is fixed by the first component, and the spacing between the test objects during application is simulated by the abutment between the first component and the second component. The second component is in an inverted state, and the magnetic return component is fixed by the positioning groove and the adsorption of the spherical iron piece on the magnetic return component. The adsorption force of the test object is changed by the movement of the first component relative to the second component. After the test is completed, the magnetic return component is automatically unloaded, which can improve the loading and unloading efficiency of the magnetic return component and improve the testing efficiency.

[0021] 2. After the test is completed, the positioning plate, cover plate and limit plate are easy to store and avoid missing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the tooling for testing the magnet adsorption force of the utility model.

[0023] Figure 2 This is a structural diagram of the first component in the tooling for testing the magnet adsorption force of the present invention.

[0024] Figure 3 This is a structural diagram of the second component in the tooling for testing the magnet adsorption force of the present invention.

[0025] Figure 4 This is a structural diagram of the second component in the tooling for testing the magnet adsorption force of the present invention from another perspective.

[0026] Figure 5 This is a structural diagram of another embodiment of the tooling for testing magnet adsorption force of the present utility model.

[0027] Figure 6 This is a structural diagram of the fixture for testing the magnet adsorption force of the utility model in the fixture state.

[0028] Figure 7 Schematic diagram of the position of the spherical iron parts and the magnetic return assembly. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0030] like Figures 1 to 4 , combined Figure 7 As shown, a fixture for testing the magnet adsorption force includes a first component 2 and a second component. The first component 2 is used to fix the spherical iron piece 2a. The first component 2 includes a positioning plate 21 and a cover plate 22. The positioning plate 21 includes a support plate 211 for supporting the spherical iron piece 2a, and a first side plate 212 and a second side plate 213 arranged on both sides of the support plate 211. The cover plate 22 is provided with a top hole 201 passing through its body, and an arc surface embedding groove 202 is provided on the side of the top hole 201. The cover plate 22 is arranged on the first side plate 212 and the second side plate 213. The end of the spherical iron piece 2a positioned on the support plate 211 is embedded in the arc surface embedding groove 202, and the end of the spherical iron piece 2a extends into the top hole 201 until the cross section at its vertex is flush with the end surface of the cover plate 22. The second component is used to position the magnetic return component 1a. The second component includes a limit plate 1. A positioning groove 101 for positioning the magnetic return component 1a is provided on the side of the limit plate 1 away from the cover plate 22, and combined with Figure 6 As shown, when the fixture for testing the magnet adsorption force is used, the first component 2 is arranged at the movable end 2′ and the cover plate 22 is located at the lower end, the limit plate 1 is arranged at the fixed end 1′ and the positioning groove 101 is arranged downward. When the cover plate 22 abuts or is adjacent to the limit plate 1, the spherical iron piece 2a and the magnetic return component 1a are attracted to fix the magnetic return component 1a in the positioning groove 101. When the cover plate 22 moves away from the limit plate 1, the magnetic return component 1a is separated from the positioning groove 101.

[0031] In the present invention, first, the spherical iron piece 2a is positioned on the support plate 211, and the cover plate 22 is fixed to the positioning plate 21 by passing through its locking hole 205 and extending into the first side plate 212 and the second side plate 213. At this time, the end of the spherical iron piece 2a is located in the arc-shaped embedded groove 202 and extends into the top hole 201, and the cross section at the vertex of its end is flush with the end surface of the cover plate 22. Then, the first component 2 with the spherical iron piece 2a fixed is inverted and locked on the movable end 2', so that the movable end 2' can drive the first component 2 to move up and down to adjust the height position of the spherical iron piece 2a; the limit plate 1 is inverted on the fixed end 1', and its positioning groove 101 opens downward; continue to combine Figure 6As shown, when in use, first, the lower end face of the first component 2 is driven by the mobile end 2′ to abut against the upper end face of the limit plate 1, and the magnetic return component 1a is placed in the positioning groove 101. The distance between the magnetic return component 1a and the spherical iron piece 2a (that is, the thickness of the limit plate 1 at the positioning groove 101) is used to simulate the distance between the two in the outdoor high-definition camera, and then the lower end face of the first component 2 is driven by the mobile end 2′ to separate from the upper end face of the limit plate 1 and gradually move away to test the adsorption force between the magnetic return component 1a and the spherical iron piece 2a in the process. When the adsorption force between the two is less than the gravity of the magnetic return component 1a after a certain distance, the magnetic return component 1a is separated from the positioning groove 101 and the second component, completing the entire adsorption force test process; then the first component 2 is abutted against the first component, and another magnetic return component is re-placed in the positioning groove 101 to repeat the above test process.

[0032] The tooling for testing the magnet adsorption force of the present invention can fix the spherical iron piece in the test object through the first component, and simulate the distance between the test objects during application when the first component and the second component are in abutment. The second component adopts an inverted state, and utilizes the position of the positioning groove and the spherical iron piece to adsorb the magnetic return component in the test object to complete the fixation of the magnetic return component. The adsorption force of the test object is changed by moving the first component relative to the second component, and the magnetic return component is automatically unloaded after the test is completed, which can improve the loading and unloading efficiency of the magnetic return component and improve the testing efficiency.

[0033] Continue as Figure 2 As shown, more specifically, the support plate 211 includes a bottom plate 2111, and a curved panel 2112 arranged on the bottom plate 2111 for supporting the spherical iron piece 2a. The first side plate 212 and the second side plate 213 are respectively arranged on the bottom plate 2111 and are located on opposite sides of the curved panel 2112. The curved panel 2112 can fit more closely with the inner wall of the spherical iron piece 2a to ensure the support stability of the spherical iron piece 2a. In addition, the bottom plate 2111 is arranged at an angle to match and support the spherical iron piece 2a.

[0034] Furthermore, a positioning block 2110 is provided on the side wall of the arc panel 2112, which matches the groove 20 on the spherical iron piece 2a. The positioning block 2110 is embedded in the groove 20, which can ensure that the spherical iron piece 2a is accurately placed on the arc panel 2112, that is, accurately positioned on the first component 2, to ensure that its position and posture are the same as the posture in the outdoor high-definition camera where it is located.

[0035] In addition, the upper end of the arc panel 2112 is provided with a recessed cut surface 2110 ′ so that its upper end surface does not protrude from the first side panel 212 and the second side panel 213 , thereby avoiding damage by scratches, making it easy to form and saving materials.

[0036] In this embodiment, a protrusion 213′ is provided at the upper end of the second side panel 213, that is, the overall height is higher than the first side panel 212, and a clearance groove 203 matching the protrusion 213′ is provided on the cover panel 22. The protrusion 213′ on the second side panel 213 is embedded in the clearance groove 203 to ensure that the cover panel 22 is placed on the positioning panel 21 in the correct state, and the support stability of the positioning panel 21 on the cover panel 22 is ensured by the abutment between the first side panel 212 and the other end of the cover panel 22.

[0037] Preferably, an insert block 2131 is provided on the protrusion 213′ of the second side plate 213, and a slot 204 matching the insert block 2131 is provided on the cover plate 22, that is, before the cover plate 22 and the positioning plate 21 are fixed by the locking column, the slot 204 can be inserted into the insert block 2131 to achieve precise positioning between the cover plate 22 and the positioning plate 21.

[0038] It should be noted that when the magnet adsorption force testing tool is not in use, the spherical iron piece 2a and the magnetic return component 1a are taken out from the first component 2 and the first component respectively, and then the cover plate 22 and the positioning plate 21 are locked and the limit plate 1 is placed on the upper end of the cover plate 22 to complete the storage of the magnet adsorption force testing tool, which can avoid scattered placement.

[0039] Furthermore, Figure 5 As shown, in another embodiment of the tooling for testing the magnet adsorption force, the second component also includes a plug-in 3 made of plastic material, the limiting plate 1 is provided with a fixing hole 111 passing through its body, and the cover plate 22 is provided with a fixing groove 221. The plug-in 3 passes through the fixing hole 111 and extends into the fixing groove 221, and is interference-connected with the two respectively, so as to achieve a fixed connection between the second component and the first component.

[0040] Based on the above settings, the positioning plate 21, the cover plate 22 (including the locking column) and the limit plate 1 are all made of aluminum to avoid magnetic conductivity and adsorption with the magnetic return component 1a, thereby affecting the test accuracy; the plug-in 3 can be made of plastic material to achieve interference fit after deformation.

[0041] The present invention also provides an adsorption force testing device, including a tensile mechanical testing machine and the above-mentioned tooling for testing the magnet adsorption force. The first component 2 is arranged at the moving end (i.e., the moving end 2′) of the tensile mechanical testing machine and the cover plate 22 is located at the lower end. The limit plate 1 is arranged on a bracket (i.e., the fixed end 1′) located on the workbench of the tensile mechanical testing machine, and the positioning groove 101 is set downward. The model of the tensile mechanical testing machine is Instron5944. The adsorption force between the magnetic return component 1a and the spherical iron piece 2a and the change process of the adsorption force can be fed back through the experimental data of the tensile mechanical testing machine during the test process to determine whether the magnetic attraction forces of multiple magnetic return components 1a under test are consistent.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A tool for testing the magnet adsorption force, characterized in that: include: The first component is used to fix the spherical iron piece. The first component includes a positioning plate and a cover plate. The positioning plate includes a support plate for supporting the spherical iron piece and side plates arranged on both sides of the support plate. The cover plate is provided with a top hole penetrating its body, and an arc-shaped embedding groove is provided on the side of the top hole. The cover plate is arranged on the side plate to embed the end of the spherical iron piece positioned on the support plate into the arc-shaped embedding groove, and the end of the spherical iron piece extends into the top hole until the cross section at its vertex is flush with the end surface of the cover plate. A second component is used to position the magnetic return component, and the second component includes a limit plate, and a positioning groove for positioning the magnetic return component is provided on a side of the limit plate away from the cover plate; The first component is arranged at the movable end and the cover plate is located at the lower end, the limit plate is arranged at the fixed end and the positioning groove is arranged downward, when the cover plate abuts or is adjacent to the limit plate, the spherical iron piece and the magnetic return component are adsorbed to fix the magnetic return component in the positioning groove, and when the cover plate is away from the limit plate, the magnetic return component is separated from the positioning groove.

2. The tool for testing the magnet adsorption force according to claim 1, characterized in that: The support plate includes a bottom plate and a curved plate arranged on the bottom plate for supporting the spherical iron piece. A pair of side plates are arranged on the bottom plate and located on both sides of the curved plate.

3. The tool for testing the magnet adsorption force according to claim 2, characterized in that: The bottom plate is arranged in an inclined manner.

4. The tool for testing the magnet adsorption force according to claim 2, characterized in that: A positioning block matching the groove on the spherical iron piece is provided on the side wall of the arc panel.

5. The tool for testing the magnet adsorption force according to claim 2 or 4, characterized in that: The upper end of the arc panel is provided with a recessed section.

6. The tool for testing the magnet adsorption force according to claim 1, characterized in that: A convex portion is provided on one of the pair of side plates, and a recess matching the convex portion is provided on the cover plate.

7. The tool for testing the magnet adsorption force according to claim 1 or 6, characterized in that: An inserting block is provided on one of the pair of side plates, and a slot matching the inserting block is provided on the cover plate.

8. The tool for testing the magnet adsorption force according to claim 1, characterized in that: The cover plate is fixed to the positioning plate by a locking column that passes through the cover plate body and extends into the side plate.

9. The tool for testing the magnet adsorption force according to claim 1, characterized in that: The positioning plate, cover plate and limit plate are all made of aluminum.

10. Adsorption force testing equipment, characterized in that, It comprises a tensile testing machine and a tool for testing the magnet adsorption force according to any one of claims 1 to 9, wherein the first component is arranged at the moving end of the tensile testing machine and the cover plate is located at the lower end, the limit plate is arranged on a bracket located on the workbench of the tensile testing machine, and the positioning groove is arranged downward.

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