Assembling device and assembling tool of permanent magnet assembly

By using the mounting base and pressing mechanism in the assembly device, the Hellbeck array permanent magnets are uniformly connected under the action of the adhesive, which solves the problems of high assembly difficulty and magnetic field imbalance, and realizes efficient and reliable permanent magnet assembly.

CN223679880UActive Publication Date: 2025-12-16HANGZHOU PERMANENT MAGNET GRP
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Patent Information

Application Number
CN202423270478.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-28
Publication Date
2025-12-16
Estimated Expiration
2034-12-28

AI Technical Summary

Technical Problem

The assembly of the Hellbeck array is difficult due to the mutual repulsion between magnets, resulting in low assembly efficiency and magnetic field imbalance caused by the gaps between magnets.

Method used

An assembly device is used, including a mounting base, a pressure plate, and a pressing mechanism, to bond adjacent permanent magnets together with adhesive. The pressure plate and pressing mechanism ensure that the adhesive is evenly distributed, preventing the permanent magnets from moving and improving connection reliability and assembly efficiency.

Benefits of technology

This achieves reliable permanent magnet connection, quick assembly, and improves the magnetic field uniformity and assembly efficiency of the Heilbeck array components.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an assembling device and an assembling tool of a permanent magnet assembly, the permanent magnet assembly comprises at least two permanent magnets which are sequentially arranged along a first direction, the assembling device is used for bonding two adjacent permanent magnets in the permanent magnet assembly together through an adhesive body, and the assembling device comprises a mounting seat; a mounting groove and an assembling groove for placing the permanent magnet assembly are arranged in the mounting seat, the mounting groove and the assembling groove are sequentially arranged along a first direction and are communicated with each other, the assembling groove extends along the first direction, and the top of the assembling groove is provided with an opening for the permanent magnet assembly to pass through; the first pressing plate is arranged in the mounting groove and extends along a second direction crossed with the first direction; and the first pressing mechanism enables the first pressing plate to move towards the direction of the permanent magnet assembly along the first direction so as to press against the permanent magnet assembly. The two adjacent permanent magnets in the permanent magnet assembly can be prevented from moving in the first direction, so that the adhesive bodies are dispersed more uniformly between the two adjacent permanent magnets, and the reliability of connection between the permanent magnets is improved.
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Description

TECHNICAL FIELD

[0001] The application relates to the technical field of permanent magnet assembly, in particular to an assembly device and an assembly tool for a permanent magnet assembly. BACKGROUND

[0002] A Halbach array is a new type of permanent magnet arrangement, in which permanent magnets with different magnetization directions are arranged in a certain order, so that the magnetic field on one side of the array is significantly enhanced, while the magnetic field on the other side is significantly weakened. Since the adjacent two magnets of the Halbach array are perpendicular or at a certain angle, the magnets repel each other during assembly, increasing the operation difficulty and reducing the assembly efficiency.

[0003] Currently, the magnets are arranged on the tool by hand, that is, after the middle magnet (with a vertical magnetic direction) is glued, the adjacent magnets are connected after the glue solidifies. However, a large amount of glue is needed to fix the magnets one by one during assembly, which results in a large gap between the magnets, and thus the magnetic field formed between the magnets is unbalanced. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary to provide an assembly device for a permanent magnet assembly, which is reliable in permanent magnet connection and fast in assembly.

[0005] The application provides an assembly device for a permanent magnet assembly, the permanent magnet assembly comprising at least two permanent magnets arranged in sequence along a first direction, the permanent magnets in the permanent magnet assembly being arranged in a Halbach array, and the assembly device being used for bonding two adjacent permanent magnets in the permanent magnet assembly by an adhesive body, and the assembly device comprising:

[0006] a mounting seat, which is provided with a mounting groove and an assembly groove for placing the permanent magnet assembly, the mounting groove and the assembly groove being arranged in sequence and communicated along the first direction, the assembly groove extending along the first direction, and the top of the assembly groove being provided with an opening for the permanent magnet assembly to pass through;

[0007] a first pressing plate, which is arranged in the mounting groove and extends along a second direction intersecting the first direction;

[0008] a first pressing mechanism, which acts on the first pressing plate to move the first pressing plate along the first direction towards the permanent magnet assembly and abut against the permanent magnet assembly.

[0009] In one of the embodiments, the first pressing mechanism comprises a first base, a first movable rod and a second movable rod, the first movable rod is rotationally connected to the first base at a position close to the middle, and a first end of the first movable rod penetrates into the mounting slot and acts on the first pressing plate, a first end of the second movable rod is rotationally connected to the first base, and a second end of the first movable rod is located on a rotation path of the second movable rod, so that the second end of the first movable rod is kept in a downward movement state under the downward pressing action of the second movable rod.

[0010] In one of the embodiments, a second pressing plate extending along the first direction is arranged in the mounting slot, the second pressing plate is arranged adjacent to the first pressing plate, and the assembling device further comprises a second pressing mechanism for moving the second pressing plate along the second direction towards the permanent magnet assembly and pressing against the permanent magnet assembly, and the second pressing mechanism acts on the second pressing plate.

[0011] In one of the embodiments, the second pressing mechanism comprises a second base, a first rotation rod and a second rotation rod, the first rotation rod is rotationally connected to the second base at a position close to the middle, and a first end of the first rotation rod penetrates into the mounting slot and acts on the second pressing plate, a first end of the second rotation rod is rotationally connected to the base, and a second end of the first rotation rod is located on a rotation path of the second rotation rod, so that the second end of the first rotation rod is kept in a downward movement state under the downward pressing action of the second rotation rod.

[0012] In one of the embodiments, a protection plate is arranged in the mounting slot in parallel and spaced apart from the second pressing plate, and the permanent magnet assembly is arranged between the second pressing plate and the protection plate.

[0013] In one of the embodiments, the first pressing plate is arranged opposite to the mounting slot, and a length of the first pressing plate along the second direction is greater than a width of the mounting slot along the second direction, and a height of the first pressing plate is not less than a height of the permanent magnet assembly.

[0014] In one of the embodiments, the first pressing mechanism is arranged to move towards or away from the permanent magnet assembly along the first direction.

[0015] The application further provides an assembling tool, which comprises a workbench and an assembling device arranged on a table top of the workbench, and the assembling device is any one of the assembling devices described above.

[0016] In one of the embodiments, the assembling device further comprises a first positioning member and a second positioning member arranged adjacent to the first positioning member, the first positioning member and the second positioning member are fixedly connected with the workbench, the mounting seat is located in a space defined by the first positioning member and the second positioning member, and the first pressing mechanism is arranged opposite to the first positioning member.

[0017] In one of the embodiments, the assembling device is at least two, and is a first assembling device and a second assembling device respectively, the first assembling device is at least one, the assembling groove in the first assembling device is defined as a first groove, the assembling groove in the second assembling device is defined as a second groove, the length of the second groove is greater than the length of the first groove along the first direction, the permanent magnet assembly in the first groove is defined as a first permanent magnet assembly, and the permanent magnet assembly in the second groove is defined as a second permanent magnet assembly, the second permanent magnet assembly comprises at least one permanent magnet and at least one group of the first permanent magnet assembly arranged in sequence along the first direction.

[0018] Compared with the prior art, in the assembling device provided by the application, the permanent magnets in the permanent magnet assembly located in the assembling groove are arranged in a Halbach array, the permanent magnet assembly is a Halbach permanent magnet assembly, and there is an adhesive body between the two adjacent permanent magnets. Since the first pressing plate and the permanent magnet assembly are arranged in sequence along the first direction, the first pressing mechanism presses against the first pressing plate, and the first pressing plate presses against the permanent magnet assembly along the first direction until the adhesive body is cured, which can prevent the two adjacent permanent magnets in the permanent magnet assembly from moving along the first direction, so that the adhesive body is more evenly distributed between the two adjacent permanent magnets, and the reliability of the connection between the permanent magnets is increased. In addition, the Halbach permanent magnet assembly is assembled more conveniently and quickly by means of the first pressing plate and the first pressing mechanism, and the assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0020] Figure 1 It is a structural schematic diagram of the assembling tool of an embodiment of the application;

[0021] Figure 2 It is a structural schematic diagram of the assembling tool of an embodiment of the application; Figure 1 It is a partial enlarged view of I in FIG. 8;

[0022] Figure 3 It is a structural schematic diagram of the assembling tool of an embodiment of the application; Figure 1 It is a structural schematic diagram of the assembling tool of an embodiment of the application;

[0023] Figure 4 for Figure 3 Enlarged view of section II in the middle;

[0024] Figure 5 for Figure 3 A magnified view of a section at point III;

[0025] Figure 6 This is a schematic diagram of the structure of a second permanent magnet component according to an embodiment of this application.

[0026] Reference numerals: 1. First assembly device; 11. Mounting base; 111. Mounting groove; 112. First groove; 113. First strip hole; 114. Second strip hole; 12. First pressure plate; 13. First pressing mechanism; 131. First base; 132. First movable rod; 133. Second movable rod; 14. Second pressure plate; 15. Second pressing mechanism; 151. Second base; 152. First rotating rod; 153. Second rotating rod; 16. First positioning component; 17. Second positioning component; 18. Protective plate; 2. Second assembly device; 21. Second groove; 3. Opening; 4. Workbench; 41. Table surface; 51. First permanent magnet assembly; 52. Second permanent magnet assembly; 531. Permanent magnet. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0029] Furthermore, the terms "first", "second", etc. are used herein for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicating a serial or chronological order of coming into being. It is to be expressly understood that a description of "first", "second", etc. features can be made in terms of one or more of those features either implicitly or explicitly.

[0030] In the present application, unless specifically stated and limited otherwise, the terms "on", "under", "above" and "below" used in the present application are used for descriptive purposes, and are not to be construed as indicating or implying relative importance or an order of coming into being. The terms "on", "under", "above" and "below" can mean directly on, or indirectly on with one or more intervening media, unless otherwise specifically stated and limited. The terms "on", "under", "above" and "below" can mean directly above or obliquely above, or can mean only higher in height than, unless otherwise specifically stated and limited. The terms "on", "under", "above" and "below" can mean directly below or obliquely below, or can mean only lower in height than, unless otherwise specifically stated and limited.

[0031] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, which can be at an angle with the axial direction.

[0032] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. The use of the terms "and / or" in the description of the present application includes a set of one or more associated listed items.

[0033] As shown in Figures 1-6 The present application discloses an assembling device of a permanent magnet assembly. The permanent magnet assembly comprises at least two permanent magnets 531 arranged in sequence along a first direction A. The permanent magnets 531 in the permanent magnet assembly are in a Halbach array distribution, and the permanent magnet assembly is a Halbach permanent magnet assembly. The assembling device is used for bonding two adjacent permanent magnets 531 in the permanent magnet assembly together by an adhesive body.

[0034] As shown in Figures 1-4As shown, the assembly device comprises a mounting base 11, a first pressing plate 12 and a first pressing mechanism 13. The mounting base 11 is internally provided with a mounting groove 111 and an assembly groove for placing the permanent magnet assembly. The mounting groove 111 and the assembly groove are sequentially arranged and communicated along a first direction A. The assembly groove extends along the first direction A, and the top of the assembly groove is provided with an opening 3 for the permanent magnet assembly to pass through. The first pressing plate 12 is arranged in the mounting groove 111 and extends along a second direction B intersecting the first direction A. The first pressing mechanism 13 acts on the first pressing plate 12 to move the first pressing plate 12 along the first direction A towards the permanent magnet assembly to abut against the permanent magnet assembly.

[0035] It can be understood that the adjacent two permanent magnets 531 in the permanent magnet assembly arranged in the assembly groove have an adhesive body therebetween. Since the first pressing plate and the permanent magnet assembly are sequentially arranged along the first direction A, the first pressing plate 12 is pressed against the permanent magnet assembly along the first direction A by the first pressing mechanism 13 until the adhesive body is cured, so as to avoid the movement of the adjacent two permanent magnets 531 in the permanent magnet assembly along the first direction A, and to make the adhesive body more evenly distributed between the adjacent two permanent magnets 531, thereby increasing the reliability of the connection between the permanent magnets 531. In addition, the first pressing plate and the first pressing mechanism make the Halbach permanent magnet assembly more convenient and fast to assemble, thereby improving the assembly efficiency.

[0036] In the embodiment, the first pressing plate 12 is arranged opposite to the assembly groove, and the length of the first pressing plate 12 along the second direction B is greater than the width of the assembly groove along the second direction B. The height of the first pressing plate 12 is not less than the height of the permanent magnet assembly.

[0037] It can be understood that the first pressing plate 12 can completely press against the permanent magnet assembly, thereby increasing the pressing area of the permanent magnet assembly and increasing the reliability of the connection between the adjacent two permanent magnets 531.

[0038] The first pressing mechanism 13 comprises a first base 131, a first movable rod 132 and a second movable rod 133. The first movable rod 132 is rotationally connected to the first base 131 at a position adjacent to the middle, and the first end of the first movable rod 132 penetrates into the mounting groove 111 and acts on the first pressing plate 12. The first end of the second movable rod 133 is rotationally connected to the first base 131, and the second end of the first movable rod 132 is located on the rotation path of the second movable rod 133, so that the second end of the first movable rod 132 is kept in a downward movement state under the downward pressing action of the second movable rod 133.

[0039] It can be understood that, by pressing down the second movable rod 133, the second movable rod 133 presses down the second end of the first movable rod 132, at this time, the first end of the first movable rod 132 abuts against the first pressing plate, avoiding the permanent magnet 531 in the permanent magnet assembly from moving along the first direction A.

[0040] The position where the first movable rod 132 is rotationally connected with the first base 131 is defined as a first position, and the position where the second movable rod 133 is rotationally connected with the first base 131 is defined as a second position. In an embodiment, the second position is arranged along the second direction B away from the second end of the first movable rod 132. In the embodiment, the mounting seat 11, the first position and the second position are arranged along the first direction A in sequence.

[0041] In an embodiment, the first movable rod 132 is straight. In the embodiment, the first movable rod 132 is V-shaped.

[0042] In an embodiment, a second pressing plate 14 extending along the first direction A is arranged in the assembly groove, the second pressing plate 14 is arranged adjacent to the first pressing plate 12, and the assembly device further comprises a second pressing mechanism 15 acting on the second pressing plate 14 and moving the second pressing plate 14 along the second direction B towards the permanent magnet assembly to abut against the permanent magnet assembly.

[0043] It can be understood that, the second pressing plate 14 is arranged to position the permanent magnet assembly, avoiding the permanent magnet 531 in the permanent magnet assembly from moving along the second direction B, further making the connection of the permanent magnet 531 in the permanent magnet assembly more reliable, and meanwhile maintaining the flatness of the peripheral wall of the permanent magnet assembly.

[0044] In an embodiment, the second pressing mechanism 15 comprises a second base 151, a first rotating rod 152 and a second rotating rod 153. The first rotating rod 152 is rotationally connected with the second base 151 adjacent to the middle position, the first end of the first rotating rod 152 penetrates into the assembly groove and acts on the second pressing plate 14, the first end of the second rotating rod 153 is rotationally connected with the base, and the second end of the first rotating rod 152 is located on the rotating path of the second rotating rod 153, so that the second end of the first rotating rod 152 is kept in a downward movement state under the downward pressing action of the second rotating rod 153.

[0045] It can be understood that, by pressing down the second rotating rod 153, the second rotating rod 153 presses down the second end of the first rotating rod 152, at this time, the first end of the first rotating rod 152 abuts against the second pressing plate, avoiding the permanent magnet 531 in the permanent magnet assembly from moving along the second direction B.

[0046] The position where the first rotating rod 152 is rotatably connected with the second base 151 is defined as a third position, and the position where the second rotating rod 153 is rotatably connected with the second base 151 is defined as a fourth position. In an embodiment, the third position is arranged along the first direction A with the second end of the first rotating rod 152. In the embodiment, the mounting seat 11, the third position and the fourth position are sequentially arranged along the second direction B.

[0047] In an embodiment, the first rotating rod 152 is straight. In the embodiment, the first rotating rod 152 is V-shaped.

[0048] The assembly groove is provided with a protection plate 18 arranged side by side with the second pressing plate 14, and the permanent magnet assembly is arranged between the second pressing plate 14 and the protection plate 18.

[0049] In the embodiment, the first pressing plate 12, the second pressing plate 14 and the protection plate 18 protect the permanent magnet assembly, avoiding the first pressing mechanism 13 and the second pressing mechanism 15 directly pressing the permanent magnet assembly, so that the permanent magnet assembly is not broken or damaged.

[0050] The first pressing plate 12, the second pressing plate 14 and the protection plate 18 are all made of aluminum, copper or nylon.

[0051] The first pressing mechanism 13 is arranged to move towards or away from the permanent magnet assembly along the first direction A. The first pressing mechanism 13 can be manually pushed or directly driven by a driving mechanism, as long as it can move.

[0052] The application also discloses an assembly tool. The assembly tool comprises a workbench 4, and the assembly device is arranged on the table top 41 of the workbench 4. Specifically, the mounting seat 11, the first base 131 and the second base 151 are all arranged on the table top 41.

[0053] In addition, in order to limit the movement of the mounting seat 11, the assembly device further comprises a first positioning member 16 and a second positioning member 17 arranged adjacent to the first positioning member 16. The first positioning member 16 and the second positioning member 17 are fixedly connected with the workbench 4, the mounting seat 11 is located in the space defined by the first positioning member 16 and the second positioning member 17, the first pressing mechanism 13 is arranged opposite to the first positioning member 16, and the second positioning member 17 is arranged opposite to the second pressing mechanism 15.

[0054] The first positioning member 16 and the second positioning member 17 can avoid the movement of the mounting seat 11 when the first pressing mechanism 13 and the second pressing mechanism 15 press the permanent magnet assembly, and better position the mounting seat 11.

[0055] The assembly device has at least two, which are the first assembly device 1 and the second assembly device 2. The assembly slot in the first assembly device 1 is defined as the first slot 112, and the assembly slot in the second assembly device 2 is defined as the second slot 21. The length of the second slot 21 is greater than the length of the first slot 112 along the first direction A. The permanent magnet assembly in the first slot 112 is defined as the first permanent magnet assembly 51, and the permanent magnet assembly in the second slot 21 is defined as the second permanent magnet assembly 52. The second permanent magnet assembly 52 includes at least one permanent magnet 531 and at least one group of first permanent magnet assemblies 51 arranged in sequence along the first direction A.

[0056] In an embodiment, the first assembly device 1 has one, and the second permanent magnet assembly 52 includes one permanent magnet 531 and one group of first permanent magnet assemblies 51 arranged in sequence along the first direction A. In this embodiment, the first assembly device 1 has two, and the second permanent magnet assembly 52 includes two groups of first permanent magnet assemblies 51 and one permanent magnet 531 arranged in sequence along the first direction A. Among them, the placement direction of each permanent magnet 531 in the two groups of first permanent magnet assemblies 51 is different, which can be seen from the arrow direction on the top of the permanent magnet 531.

[0057] The specific assembly method is as follows:

[0058] Step 1: Place one of the permanent magnets 531 in the first permanent magnet assembly 51 in the first slot 112, and place the other permanent magnet 531 in the first slot 112 after coating it with an adhesive body. The assembly direction of the two permanent magnets 531 is installed according to the specified assembly of the corresponding mark arrow (located on the top of the corresponding permanent magnet 531), and then the first pressing mechanism 13 presses the first pressing plate 12, and the second pressing mechanism 15 presses the second pressing plate 14, until the adhesive body solidifies to form the first permanent magnet assembly 51. See Figure 3 and Figure 4 for details.

[0059] Step 2: Assemble another group of first permanent magnet assemblies 51 in another first assembly device 1 in the manner of step 1. See Figure 3 and Figure 4 for details.

[0060] Step 3: Coat the side walls of the two groups of first permanent magnet assemblies 51 with adhesive bodies, respectively, and place them in the second slot 21, and place another permanent magnet 531 in the second slot 21 (the assembly direction can be seen from the mark arrow marked on the top surface of the permanent magnet 531). Then the first pressing mechanism 13 presses the first pressing plate 12, and the second pressing mechanism 15 presses the second pressing plate 14, until the adhesive body solidifies to form the second permanent magnet assembly 52. See Figure 5 and Figure 6 for details.

[0061] In order to avoid interference with the movement of the first and second movable rods, the mounting base 11 is provided with a first elongated hole 113 extending along the up-down direction at a position corresponding to the first movable rod 132, and a second elongated hole 114 extending along the up-down direction at a position corresponding to the first rotating rod 152.

[0062] The above assembly method is simple and convenient, effectively controls the assembly rejection rate of the permanent magnet 531, and has a certain universality.

[0063] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0064] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An assembly device for a permanent magnet assembly comprising at least two permanent magnets (531) arranged in series along a first direction (A), the permanent magnets (531) in the permanent magnet assembly being arranged in a Halbach array, the assembly device being configured to bond together two adjacent permanent magnets (531) in the permanent magnet assembly by means of an adhesive body, characterized in that, The assembling device comprises: a mounting base (11) provided with a mounting groove (111) and an assembling groove for placing the permanent magnet assembly, the mounting groove (111) and the assembling groove are sequentially arranged and communicated along the first direction (A), the assembling groove extends along the first direction (A), and the top of the assembling groove is provided with an opening (3) for the permanent magnet assembly to pass through; a first pressing plate (12) arranged in the mounting groove (111) and extending along a second direction (B) intersecting the first direction (A); a first pressing mechanism (13) acting on the first pressing plate (12) to move the first pressing plate (12) along the first direction (A) towards the permanent magnet assembly to press against the permanent magnet assembly.

2. The assembly device of claim 1, wherein, The first pressing mechanism (13) comprises a first base (131), a first movable rod (132) and a second movable rod (133), the first movable rod (132) is rotatably connected to the first base (131) at a position adjacent to the middle, and the first end of the first movable rod (132) penetrates into the mounting groove (111) and acts on the first pressing plate (12), the first end of the second movable rod (133) is rotatably connected to the first base (131), and the second end of the first movable rod (132) is located on the rotation path of the second movable rod (133), so that the second end of the first movable rod (132) keeps moving downward under the downward pressing action of the second movable rod (133).

3. The assembly device of claim 1, wherein, A second pressing plate (14) extending along the first direction (A) is arranged in the assembling groove, the second pressing plate (14) is arranged adjacent to the first pressing plate (12), and the assembling device further comprises a second pressing mechanism (15) for moving the second pressing plate (14) along the second direction (B) towards the permanent magnet assembly to press against the permanent magnet assembly, and the second pressing mechanism (15) acts on the second pressing plate (14).

4. The assembly device of claim 3, wherein, The second pressing mechanism (15) comprises a second base (151), a first rotating rod (152) and a second rotating rod (153), the first rotating rod (152) is rotatably connected to the second base (151) at a position adjacent to the middle, and the first end of the first rotating rod (152) penetrates into the assembling groove and acts on the second pressing plate (14), the first end of the second rotating rod (153) is rotatably connected to the base, and the second end of the first rotating rod (152) is located on the rotation path of the second rotating rod (153), so that the second end of the first rotating rod (152) keeps moving downward under the downward pressing action of the second rotating rod (153).

5. The assembly apparatus of claim 3, wherein, A protection plate (18) is arranged in the assembling groove and spaced apart from the second pressing plate (14) side by side, and the permanent magnet assembly is arranged between the second pressing plate (14) and the protection plate (18).

6. The assembly apparatus of claim 1, wherein, The first pressing plate (12) is arranged opposite to the assembly slot, and the length of the first pressing plate (12) along the second direction (B) is greater than the width of the assembly slot along the second direction (B), and the height of the first pressing plate (12) is not less than the height of the permanent magnet assembly.

7. The assembly device according to any one of claims 1 to 6, characterized in that The first pressing mechanism (13) is arranged to move close to or away from the permanent magnet assembly along the first direction (A).

8. An assembly tool comprising a worktable (4) and an assembly device provided on a table top (41) of the worktable (4), characterized in that, The assembly device is the assembly device according to any one of claims 1-7.

9. The assembly tool of claim 8, wherein, The assembly device further comprises a first positioning member (16) and a second positioning member (17) arranged adjacent to the first positioning member (16), the first positioning member (16) and the second positioning member (17) are fixedly connected with the workbench (4), the mounting seat (11) is located in the space defined by the first positioning member (16) and the second positioning member (17), and the first pressing mechanism (13) is arranged opposite to the first positioning member (16).

10. The assembly tool of claim 8, wherein, The assembly device is at least two, which are a first assembly device (1) and a second assembly device (2), the first assembly device (1) is at least one, the assembly slot in the first assembly device (1) is defined as a first slot (112), the assembly slot in the second assembly device (2) is defined as a second slot (21), along the first direction (A), the length of the second slot (21) is greater than the length of the first slot (112), the permanent magnet assembly in the first slot (112) is defined as a first permanent magnet assembly (51), and the permanent magnet assembly in the second slot (21) is defined as a second permanent magnet assembly (52), the second permanent magnet assembly (52) comprises at least one permanent magnet (531) and at least one group of the first permanent magnet assembly (51) arranged in sequence along the first direction (A).