A jig and method for batch mounting magnets and housings

Abstract

This invention relates to a jig and method for batch mounting magnets and housings, comprising a positioning sleeve and a power column. The positioning sleeve has multiple material loading slots for carrying magnets formed on its peripheral surface. The positioning sleeve is hollow inside and has an annular limiting ring in the center to limit the movement of the housing. The bottom surface of the material loading slots has an adsorption magnet for attracting magnets and a slot communicating with the interior of the positioning sleeve. The power column penetrates the interior of the positioning sleeve. Two positioning blocks are symmetrically slidably distributed at the lower end of the positioning sleeve. The two positioning blocks move synchronously in opposite directions via a gear and rack linkage. Initially, the two positioning blocks are kept open by a first elastic reset member. The positioning blocks have guide slopes for guiding the housing. This novel jig not only enables batch mounting of magnets but also ensures mounting accuracy thanks to the two movable positioning blocks. Furthermore, the jig does not require an additional drive mechanism to provide driving force, significantly reducing costs and overall size.

Description

Technical Field

[0001] This invention relates to the field of motor processing technology, and more specifically, to a jig and method for batch mounting magnets and housings. Background Technology

[0002] The motor manufacturing process involves attaching magnets to the housing. This process is usually done in two ways: one is to form multiple positioning grooves on the housing and then insert the magnets into the corresponding positioning grooves during assembly; the other is to apply adhesive, that is, apply adhesive to the surface of the magnets and then attach them to the inside of the housing. Of these two methods, the former requires relatively complex processing of the housing, and the magnets need to be fixed after installation to prevent them from loosening, making the process more complicated. Therefore, the latter method is more commonly used in actual production.

[0003] Currently, when using adhesive bonding for processing, the housing usually needs to be positioned first, and then a robot arm picks up the magnet and moves it to the adhesive application component for application. After that, the magnet is inserted into the corresponding bonding position on the housing for bonding and pressing. The processing efficiency is low and the precision requirements are very high. There is a need for a jig and method for batch bonding of magnets and housings that can improve the bonding efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a jig and method for batch mounting magnets and housings, in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A jig for batch mounting of magnets and housings is constructed, comprising a positioning sleeve and a power column. The positioning sleeve has multiple material loading slots for carrying magnets formed on its peripheral surface. The positioning sleeve is hollow inside and has an annular limiting ring in the center for limiting the position of the housing. The bottom surface of each material loading slot has an adsorption magnet for attracting magnets and a slot communicating with the interior of the positioning sleeve. The power column penetrates the interior of the positioning sleeve. Two positioning blocks are symmetrically slidably distributed at the lower end of the positioning sleeve. The two positioning blocks move synchronously in opposite directions via a gear and rack linkage. Initially, the two positioning blocks are kept open by a first elastic reset member. The positioning blocks are provided with guides for guiding the housings. The guide slope; the power column includes a drive sleeve and a guide column, the drive sleeve is provided with extrusion blocks that correspond one-to-one with the slots, and multiple extrusion blocks can be driven by the guide column to move laterally to extrude the magnets in the loading groove; the guide column is also used to guide the drive sleeve, and the fixture also includes a second elastic reset member for resetting the drive sleeve; the guide column is provided with a receiving groove for accommodating the gear rack, the gear rack is provided with a limit post, the inner wall of the receiving groove is provided with an L-shaped groove that cooperates with the limit post, when the two positioning blocks are squeezed to the minimum distance state by the shell, the limit post enters the longitudinal side of the corresponding L-shaped groove.

[0007] The present invention provides a mass mounting fixture for magnets and housings, wherein the gear rack includes a gear and two transverse racks respectively fixed to two positioning blocks; the two racks are arranged transversely side by side and each has a tooth groove on its opposite side surface; the gear is located between the two racks and meshes with both racks.

[0008] The present invention provides a mass mounting fixture for magnets and housings, wherein a rotating key shaft passing through the gear is rotatably disposed in the receiving groove, and the gear and the rotating key shaft are splinedly coupled.

[0009] The magnet and housing batch mounting fixture of the present invention includes a first bevel gear ring and a second bevel gear ring on the outer surface of the gear, the tooth grooves being helical tooth grooves and the two tooth grooves respectively meshing with the first bevel gear ring and the second bevel gear ring.

[0010] The magnet and housing batch mounting fixture of the present invention, wherein the first elastic reset member is a spring spring disposed on the rotating key shaft, the bottom surface of the receiving groove is provided with a groove for accommodating the spring spring, one end of the spring spring is fixedly connected to the rotating key shaft, and the other end is fixedly connected to the inner wall of the groove.

[0011] The magnet and housing batch mounting fixture of the present invention includes a drive sleeve that is longitudinally slidably mounted on a guide post, a plurality of extrusion blocks that are laterally movable on the drive sleeve, a wedge-shaped groove provided on the inner surface of the extrusion block, and a wedge-shaped slider that cooperates with the wedge-shaped groove on the guide post.

[0012] The magnet and housing batch mounting fixture of the present invention, wherein the second elastic reset member is a spring and is disposed at the top end of the drive sleeve, and the spring is connected to the inner top of the positioning sleeve.

[0013] The present invention provides a mass mounting fixture for magnets and housings, wherein the fixture further includes a base, the upper surface of which is provided with a mounting groove, the power column is installed in the mounting groove, the upper end of the positioning sleeve extends out of the mounting groove, and the lower end is longitudinally slidably disposed in the mounting groove.

[0014] The present invention provides a batch mounting fixture for magnets and housings, wherein the positioning sleeve and the power column constitute a unit, and multiple units are provided on the base.

[0015] A method for batch mounting magnets and housings, using the aforementioned batch mounting fixture for magnets and housings, wherein the method includes the following steps:

[0016] In the initial state, the limiting post is located at the lateral edge of the corresponding L-shaped groove, the guide post and the positioning sleeve do not move relative to each other, and the two positioning blocks remain open in the first elastic reset member;

[0017] The magnets are fed one by one into the material slots on the periphery of the positioning sleeve, and are attracted and prevented from falling off by the adsorption magnets. The outer surface of the magnets is coated with glue.

[0018] After clamping the housing, move it above the positioning sleeve, and then put the housing on the positioning sleeve from top to bottom, ensuring that the inner wall of the housing does not come into contact with the glue on the outer surface of the magnet during the putting-on process;

[0019] After the housing moves down and contacts the two positioning blocks, it will squeeze the corresponding guide slope on the positioning blocks. Under the linkage of the gear and magnetic strip, the two positioning blocks move in opposite directions and contract inward, and the first elastic reset member is compressed.

[0020] When the housing contacts the limiting ring, the two positioning blocks are squeezed by the housing and moved to the minimum spacing state, and the limiting post enters the longitudinal side of the corresponding L-shaped groove. At this time, the guide post and the positioning sleeve can move relative to each other.

[0021] As the housing continues to move downward, it causes the positioning sleeve and the drive sleeve of the power column to move downward. The guide column drives multiple extrusion blocks to move laterally in sync, extruding the magnet in the material loading groove, so that the magnet is attached to the inner wall of the housing, and the second elastic reset member is compressed.

[0022] After maintaining the pressure for the set time, the housing with the attached magnet moves upward. The second elastic reset component drives the drive sleeve to reset, and the first elastic reset component drives the two positioning blocks to reset. The limit post enters the lateral edge of the corresponding L-shaped groove, and the guide post and positioning sleeve return to the locked state.

[0023] The beneficial effects of this invention are as follows: In the initial state, the limiting post is located at the lateral edge of the corresponding L-shaped groove, the guide post and the positioning sleeve do not move relative to each other, and the two positioning blocks remain open in the first elastic reset member; magnets are fed one by one into the material loading grooves on the peripheral surface of the positioning sleeve, and are attracted and prevented from falling off by the adsorption magnet, and the outer surface of the magnet is coated with glue; after the shell is clamped, it is moved above the positioning sleeve, and then the shell is put on the positioning sleeve from top to bottom, and during the putting-on process, it is ensured that the inner wall of the shell does not contact the glue on the outer surface of the magnet; after the shell moves down and contacts the two positioning blocks, it will squeeze the corresponding guide slope on the positioning blocks, and the two positioning blocks move in opposite directions and retract inward synchronously under the linkage of the gear and magnetic strip. The elastic reset component is compressed; when the housing contacts the limiting ring, the two positioning blocks are squeezed by the housing and moved to the minimum spacing state, and the limiting post enters the longitudinal side of the corresponding L-shaped groove. At this time, the guide post and the positioning sleeve can move relative to each other; the housing continues to move downward, driving the positioning sleeve and the drive sleeve of the power post to move downward. The guide post drives multiple extrusion blocks to move laterally in sync, extruding the magnet in the loading groove, so that the magnet is attached to the inner wall of the housing, and the second elastic reset component is compressed; after maintaining the pressure state for a set time, the housing after the magnet is attached is driven upward, the second elastic reset component drives the drive sleeve to reset, the first elastic reset component drives the two positioning blocks to reset, the limiting post enters the lateral side of the corresponding L-shaped groove, and the guide post and the positioning sleeve return to the locked state;

[0024] The novel fixture of this application can not only achieve batch mounting of magnets, but also ensure mounting accuracy by relying on two movable positioning blocks. In addition, the fixture does not require an additional drive mechanism to provide driving force. Only the robotic arm that clamps the housing needs to perform the operation, which greatly reduces the power requirements and corresponding control requirements, significantly reduces costs and reduces the overall size. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0026] Figure 1 This is a schematic diagram of the structure of a batch mounting fixture for magnets and housings according to a preferred embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the drive sleeve and guide post structure of the batch mounting fixture for magnets and housings according to a preferred embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of the assembly structure of the magnet and housing batch mounting fixture, gear rack and guide post, according to a preferred embodiment of the present invention.

[0029] Figure 4 This is a top view of the gear and rack of the batch mounting fixture for magnets and housings according to a preferred embodiment of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0031] A preferred embodiment of the present invention provides a batch mounting fixture for magnets and housings, such as... Figure 1 As shown, see also Figures 2-4 The system includes a positioning sleeve 1 and a power column 2. The peripheral surface of the positioning sleeve 1 has multiple material loading grooves 10 for carrying magnets. The interior of the positioning sleeve 1 is hollow, and a ring-shaped limiting ring 11 is provided in the center to limit the position of the housing (an overflow groove 110 can be provided on the limiting ring 11 to collect a small amount of accidentally spilled glue). The bottom surface of the material loading groove 10 is provided with an adsorption magnet for attracting magnets and has a slot 101 connecting to the interior of the positioning sleeve 1. The power column 2 penetrates into the interior of the positioning sleeve 1. Two positioning blocks 12 are symmetrically slidably distributed at the lower end of the positioning sleeve 1. The two positioning blocks 12 move synchronously in opposite directions through a gear rack 5. In the initial state, the two positioning blocks 12 are kept open by a first elastic reset member 6. A guide for the housing is provided on the positioning blocks 12. The guide slope 120; the power column 2 includes a drive sleeve 20 and a guide column 21. The drive sleeve 20 is provided with extrusion blocks 200 corresponding to the slots 101. Multiple extrusion blocks 200 can be driven by the guide column 21 to move laterally to extrude magnets in the loading groove 10. The guide column 21 is also used to guide the drive sleeve 20. The fixture also includes a second elastic reset member 7 for resetting the drive sleeve 20. The guide column 21 is provided with a receiving groove 210 for accommodating a gear rack. The gear rack 5 is provided with a limit post 500. The inner wall of the receiving groove 210 is provided with an L-shaped groove 211 that cooperates with the limit post 500. When the two positioning blocks 12 are squeezed to the minimum spacing state by the shell, the limit post 500 enters the longitudinal side of the corresponding L-shaped groove 211.

[0032] In the initial state, the limiting post 500 is located at the lateral edge of the corresponding L-shaped groove 211, the guide post 21 and the positioning sleeve 1 do not move relative to each other (i.e., locked state), and the two positioning blocks 12 remain open in the first elastic reset member 6; magnets are fed one by one into the material loading grooves 10 on the peripheral surface of the positioning sleeve 1, and are attracted and prevented from falling off by the adsorption magnets, and the outer surface of the magnets is coated with glue (the glue is applied using existing glue application components).

[0033] After the robotic arm grasps the housing, it moves it above the positioning sleeve 1 and then places the housing onto the positioning sleeve 1 from top to bottom, ensuring that the inner wall of the housing does not contact the glue on the outer surface of the magnet during the placement process. After the housing moves down and contacts the two positioning blocks 12, it will squeeze the corresponding guide slope 120 on the positioning blocks 12. Under the linkage of the gear magnetic strip 5, the two positioning blocks 12 move in opposite directions and retract inward, and the first elastic reset member 6 is compressed. When the housing contacts the limiting ring 11, the two positioning blocks 12 are squeezed by the housing and move to the minimum spacing state. The limiting post 500 enters the longitudinal side of the corresponding L-shaped groove 211. At this time, the guide post 21 and the positioning sleeve 1 can move relative to each other (i.e., unlocked state).

[0034] As the housing continues to move downward, it causes the positioning sleeve 1 and the drive sleeve 20 of the power column to move downward. The guide column 21 (moves relative to the drive sleeve 20) drives multiple extrusion blocks 200 to move laterally in sync to extrude the magnets in the loading groove 10, so that the magnets are attached to the inner wall of the housing and the second elastic reset member 7 is compressed.

[0035] After maintaining the pressure state for a set time, the housing after the magnet is attached moves upward, the second elastic reset member 7 drives the drive sleeve 20 to reset, the first elastic reset member 6 drives the two positioning blocks 12 to reset, the limit post 500 enters the lateral side of the corresponding L-shaped groove 211, and the guide post 21 and the positioning sleeve 1 return to the locked state.

[0036] The novel fixture of this application can not only achieve batch mounting of magnets, but also ensure mounting accuracy by relying on two movable positioning blocks. In addition, the fixture does not require an additional drive mechanism to provide driving force. Only the robotic arm that clamps the housing needs to perform the operation, which greatly reduces the power requirements and corresponding control requirements, significantly reduces costs and reduces the overall size.

[0037] Preferably, the gear rack 5 includes a gear 51 and two transverse racks 50 respectively fixed to the two positioning blocks 12; the two racks 50 are arranged transversely side by side and each has a tooth groove on its opposite side surface; the gear 51 is located between the two racks 50 and meshes with both racks 50; a rotating key shaft 212 passing through the gear 51 is rotatably disposed in the receiving groove 210, and the gear 51 and the rotating key shaft 212 are splined; the outer surface of the gear 51 is provided with a first bevel gear ring 510 and a second bevel gear ring 511, the tooth groove is a helical tooth groove and the two tooth grooves mesh with the first bevel gear ring 510 and the second bevel gear ring 511 respectively;

[0038] This structural design, relying on the two tooth grooves to mesh with the first bevel gear ring 510 and the second bevel gear ring 511 respectively, can effectively limit the upper and lower positions of the middle gear 51. At the same time, the spline engagement between the gear 51 and the rotating key shaft 212 provides circumferential limiting for the gear 51. This improves reliability, increases space utilization, and reduces size. It also ensures smooth linkage between the two positioning blocks 12 without affecting the relative movement between the guide post 21 and the positioning sleeve 1.

[0039] Preferably, the first elastic reset component 6 is a spring-loaded spring mounted on the rotating key shaft 212. The bottom surface of the receiving groove 210 is provided with a groove 213 for accommodating the spring-loaded spring (a bearing 215 can be provided on the top surface to rotatably connect the rotating key shaft 212, and a bearing can be provided on the bottom surface to rotatably connect the rotating key shaft 212). One end of the spring-loaded spring is fixedly connected to the rotating key shaft 212, and the other end is fixedly connected to the inner wall of the groove 213. It can cooperate well with the gear and rack structure, ensuring the elastic reset effect while taking into account the space utilization rate.

[0040] Preferably, the drive sleeve 20 is longitudinally slidably sleeved on the guide post 21, and multiple extrusion blocks 200 are transversely movably inserted on the drive sleeve 20. The inner surface of the extrusion block 200 is provided with a wedge-shaped groove 201, and the guide post 21 is provided with a wedge-shaped slider 214 that cooperates with the wedge-shaped groove 201. The second elastic reset member 7 is a spring and is provided at the top of the drive sleeve 20. The spring is connected to the inner top of the positioning sleeve 1. In this structure, a movable drive sleeve 20 design is adopted to facilitate buffering, reduce hard contact between components, and at the same time take into account the pressure-holding effect of elastically pressing the magnet against the inner wall of the housing.

[0041] Preferably, the fixture also includes a base 8, the upper surface of which is provided with a mounting groove, the power column 2 is installed in the mounting groove, the upper end of the positioning sleeve 1 extends out of the mounting groove, and the lower end is longitudinally slidably disposed in the mounting groove; the positioning sleeve 1 and the power column 2 constitute a unit, and multiple units are provided on the base 8; this facilitates multi-station mounting.

[0042] A method for batch mounting magnets and housings, using the aforementioned batch mounting fixture for magnets and housings, wherein the method includes the following steps:

[0043] In the initial state, the limiting post is located at the lateral edge of the corresponding L-shaped groove, the guide post and the positioning sleeve do not move relative to each other, and the two positioning blocks remain open in the first elastic reset member;

[0044] The magnets are fed one by one into the material slots on the periphery of the positioning sleeve, and are attracted and prevented from falling off by the adsorption magnets. The outer surface of the magnets is coated with glue.

[0045] After clamping the housing, move it above the positioning sleeve, and then put the housing on the positioning sleeve from top to bottom, ensuring that the inner wall of the housing does not come into contact with the glue on the outer surface of the magnet during the putting-on process;

[0046] After the housing moves down and contacts the two positioning blocks, it will squeeze the corresponding guide slope on the positioning blocks. Under the linkage of the gear and magnetic strip, the two positioning blocks move in opposite directions and contract inward, and the first elastic reset member is compressed.

[0047] When the housing contacts the limiting ring, the two positioning blocks are squeezed by the housing and moved to the minimum spacing state, and the limiting post enters the longitudinal side of the corresponding L-shaped groove. At this time, the guide post and the positioning sleeve can move relative to each other.

[0048] As the housing continues to move downward, it causes the positioning sleeve and the drive sleeve of the power column to move downward. The guide column drives multiple extrusion blocks to move laterally in sync to extrude the magnets in the loading groove, so that the magnets are attached to the inner wall of the housing, and the second elastic reset component is compressed.

[0049] After maintaining the pressure for the set time, the housing with the attached magnet moves upward, the second elastic reset component drives the drive sleeve to reset, the first elastic reset component drives the two positioning blocks to reset, the limit post enters the lateral edge of the corresponding L-shaped groove, and the guide post and positioning sleeve return to the locked state.

[0050] By applying the method of this application, not only can the batch mounting of magnets be realized, but the mounting accuracy can also be well guaranteed by the two movable positioning blocks. In addition, the fixture does not require an additional drive mechanism to provide driving force. Only the robotic arm that clamps the housing needs to perform the operation, which greatly reduces the power requirements and corresponding control requirements, significantly reduces costs and reduces the overall size.

[0051] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A jig for batch mounting of magnets and housings, characterized in that, The device includes a positioning sleeve and a power column. The positioning sleeve has multiple material loading slots for carrying magnets formed on its peripheral surface. The positioning sleeve is hollow inside and has an annular limiting ring in the center to limit the movement of the housing. The bottom surface of each material loading slot has an adsorption magnet for attracting the magnets and a slot communicating with the interior of the positioning sleeve. The power column penetrates the interior of the positioning sleeve. Two positioning blocks are symmetrically slidably distributed at the lower end of the positioning sleeve. The two positioning blocks move synchronously in opposite directions via a gear and rack linkage. Initially, the two positioning blocks are kept open by a first elastic reset member. Each positioning block has a guiding inclined surface for guiding the housing. The power column encloses... The fixture includes a drive sleeve and a guide post. The drive sleeve is provided with extrusion blocks that correspond one-to-one with the slots. Multiple extrusion blocks can be driven by the guide post to move laterally and extrude magnets in the material loading groove. The guide post is also used to guide the drive sleeve. The fixture also includes a second elastic reset member for resetting the drive sleeve. The guide post is provided with a receiving groove for accommodating the gear rack. The gear rack is provided with a limit post. The inner wall of the receiving groove is provided with an L-shaped groove that cooperates with the limit post. When the two positioning blocks are squeezed to the minimum distance state by the housing, the limit post enters the longitudinal side of the corresponding L-shaped groove.

2. The mass mounting fixture for magnets and housings according to claim 1, characterized in that, The gear rack includes a gear and two transverse racks fixed to two positioning blocks respectively; the two racks are arranged transversely side by side and each has a tooth groove on its opposite side surface; the gear is located between the two racks and meshes with both racks.

3. The mass mounting fixture for magnets and housings according to claim 2, characterized in that, A rotating key shaft is rotatably disposed within the receiving groove, passing through the gear, and the gear and the rotating key shaft are splined together.

4. The mass mounting fixture for magnets and housings according to claim 3, characterized in that, The outer surface of the gear is provided with a first bevel gear ring and a second bevel gear ring, the tooth groove is a helical tooth groove and the two tooth grooves respectively mesh with the first bevel gear ring and the second bevel gear ring.

5. The mass mounting fixture for magnets and housings according to claim 3, characterized in that, The first elastic reset component is a spring-loaded spring mounted on the rotating key shaft. The bottom surface of the receiving groove is provided with a groove for accommodating the spring-loaded spring. One end of the spring-loaded spring is fixedly connected to the rotating key shaft, and the other end is fixedly connected to the inner wall of the groove.

6. The mass mounting fixture for magnets and housings according to claim 1, characterized in that, The drive sleeve is slidably mounted on the guide post in the longitudinal direction, and a plurality of extrusion blocks are movably mounted on the drive sleeve in the transverse direction. The inner surface of the extrusion block is provided with a wedge-shaped groove, and the guide post is provided with a wedge-shaped slider that cooperates with the wedge-shaped groove.

7. The mass mounting fixture for magnets and housings according to claim 6, characterized in that, The second elastic reset element is a spring and is disposed at the top of the drive sleeve, and the spring is connected to the inner top of the positioning sleeve.

8. The mass mounting fixture for magnets and housings according to claim 1, characterized in that, The fixture also includes a base, the upper surface of which is provided with a mounting groove, the power column is installed in the mounting groove, the upper end of the positioning sleeve extends out of the mounting groove, and the lower end is slidably disposed in the mounting groove.

9. The mass mounting fixture for magnets and housings according to claim 8, characterized in that, The positioning sleeve and the power column constitute a unit, and multiple units are provided on the base.

10. A method for batch mounting magnets and housings, using the batch mounting fixture for magnets and housings as described in any one of claims 1-9, characterized in that, The method includes the following steps: In the initial state, the limiting post is located at the lateral edge of the corresponding L-shaped groove, the guide post and the positioning sleeve do not move relative to each other, and the two positioning blocks remain open in the first elastic reset member; The magnets are fed one by one into the material slots on the periphery of the positioning sleeve, and are attracted and prevented from falling off by the adsorption magnets. The outer surface of the magnets is coated with glue. After clamping the housing, move it above the positioning sleeve, and then put the housing on the positioning sleeve from top to bottom, ensuring that the inner wall of the housing does not come into contact with the glue on the outer surface of the magnet during the putting-on process; After the housing moves down and contacts the two positioning blocks, it will squeeze the corresponding guide slope on the positioning blocks. Under the linkage of the gear and magnetic strip, the two positioning blocks move in opposite directions and contract inward, and the first elastic reset member is compressed. When the housing contacts the limiting ring, the two positioning blocks are squeezed by the housing and moved to the minimum spacing state, and the limiting post enters the longitudinal side of the corresponding L-shaped groove. At this time, the guide post and the positioning sleeve can move relative to each other. As the housing continues to move downward, it causes the positioning sleeve and the drive sleeve of the power column to move downward. The guide column drives multiple extrusion blocks to move laterally in sync, extruding the magnet in the material loading groove, so that the magnet is attached to the inner wall of the housing, and the second elastic reset member is compressed. After maintaining the pressure for the set time, the housing with the attached magnet moves upward. The second elastic reset component drives the drive sleeve to reset, and the first elastic reset component drives the two positioning blocks to reset. The limit post enters the lateral edge of the corresponding L-shaped groove, and the guide post and positioning sleeve return to the locked state.

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