CN113635016B

CN113635016B - Magnet assembling method and assembling equipment

Info

Publication number: CN113635016B
Application number: CN202010352699.3A
Authority: CN
Inventors: 梁维霖; 梁徽湖; 黄奇聪
Original assignee: Dongguan Qilian Electronics Co ltd; Solid Year Co Ltd
Current assignee: Dongguan Qilian Electronics Co ltd; Solid Year Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2023-01-20
Anticipated expiration: 2040-04-27
Also published as: CN113635016A

Abstract

The assembling method includes the steps that a magnet group is adjacent to or abutted against an upper jig, then the upper jig together with the magnet group or one of bodies is moved, the position of the magnet group corresponds to one groove of the body, then the magnet located at the bottommost layer of the magnet group is located in the groove, then the upper jig together with the magnet group or one of the bodies is moved, the magnet located at the bottommost layer in the groove is separated from other magnets of the magnet group, and the magnet is further located at an assembling position.

Description

Magnet assembling method and assembling equipment

Technical Field

The present invention relates to a magnet, and more particularly, to a method and an apparatus for assembling a magnet.

Background

The application field and the layer of the magnet are very wide, the magnet can be arranged on the occasion needing non-contact force, and various control and switch mechanisms can be achieved through attraction or repulsion of the magnetic force generated by the magnet.

In order to control the magnetic force of the magnets more precisely and variably, the number of magnets installed is usually large and the distribution range of the magnets is large. For mass assembly of the above magnets, for example, chinese patent No. CN203019001U discloses a rectangular magnet press-in jig, which mainly allows a cylinder to drive a plurality of mechanism elements until the rectangular magnet at the bottom of the fixing block 10 is ejected out, and then allows the rectangular magnet to fall into the magnet press-in groove. For example, chinese patent No. CN106041465B discloses a magnet assembling mechanism, in which rows of magnets attracted by an air pressure source are allowed to flow into a magnet feeding channel of a material separating table from top to bottom from a quick-release cartridge clip, the magnets fall into the magnet separating channel through a magnet inlet on a material separating plate, a pushing pin is inserted into the magnet separating channel on the material separating plate to push the magnets in the magnet separating channel, and the magnets are separated from each other by attraction until being pushed to a magnet outlet; because the shape of the magnet distributing flow passage is limited, each magnet distributing flow passage can only pass through one magnet each time. For another example, CN205363188U discloses a magnet element tooling press-in fixture device, in which an upper transverse push rod is used to push a vertically arranged lowest magnet piece into a magnet piece positioning hole and then return, an iron sheet is placed into an iron sheet positioning hole while returning, a vertical push rod presses the magnet piece in the magnet piece positioning hole into the iron sheet and then returns, the upper transverse push rod pushes and moves synchronously with a lower transverse push rod, and the upper transverse push rod pushes the magnet piece into the magnet piece positioning hole while the lower transverse push rod pushes the iron sheet pressed into the magnet piece out of the iron sheet positioning hole.

Although the prior art can assemble magnets rapidly and in large quantity, the assembly method is that the whole group of magnets are firstly attracted together by magnetic attraction to be separated into a single magnet one by one, then the magnets are positioned and arranged one by one, and the whole group of magnets are separated into the single magnet, so that the components and the process are complicated and inconvenient, the intermediate procedures are too many, the assembly can be completed indirectly through a plurality of procedures, and the assembly time and the whole manufacturing cost of the magnets are increased.

Disclosure of Invention

Therefore, the present invention is directed to a method and an apparatus for assembling a magnet, which can simplify the assembling process, increase the assembling speed of the magnet, and improve the operation efficiency of the overall assembling process.

In order to achieve the above object, the present invention provides a magnet assembly method for disposing a plurality of magnets of a magnet set, which are magnetically attracted and stacked with each other in a vertical direction, at an assembly position, the assembly method including first abutting or abutting the magnet set against an upper jig, the upper jig being located above a body; then moving one of the upper fixture together with the magnet group or moving the body to enable the position of the magnet group to correspond to the groove of the body; then, a plurality of magnets positioned at the bottommost layer of the magnet group are positioned in the groove; and then moving the upper jig together with the magnet group or moving one of the upper jig and the body to separate the magnets at the bottommost layer in the groove from the other magnets of the magnet group and further locate the magnet group at the assembly position, so that the purposes of simplifying the assembly process, accelerating the assembly speed of the magnets, improving the operation efficiency of the whole assembly process and the like are achieved.

The detailed steps, features, or technical contents provided in connection with the present invention will be described in the detailed description of the embodiments to follow. However, it should be understood by those skilled in the art that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Drawings

Fig. 1 to 5 are flow charts of manufacturing methods according to a preferred embodiment of the present invention, which mainly show an assembly method of a magnet.

Fig. 6 is a front view of a preferred embodiment of the present invention, mainly showing an assembly apparatus of the magnet.

FIG. 7 is a top view of a preferred embodiment of the present invention, primarily showing a single transverse row of magnets in an assembled position.

Fig. 8 and 9 are schematic views of a preferred embodiment of the present invention, mainly showing the state that the magnet at the bottom layer of the magnet group is separated from other magnets.

Fig. 10 to 16 show different embodiments of the upper fixture of the present invention.

FIG. 17 shows another embodiment of the present invention.

Fig. 18 and 19 are top views of another embodiment of the present invention.

FIGS. 20-30 are flow charts of manufacturing methods applied to an automated assembly process according to a preferred embodiment of the present invention.

[ description of main reference symbols in the drawings ]

Magnet group 10

Magnets

12, 13

Upper jig 20

Inner side 22

Retaining wall 24

Body 30

Groove 32

Support member 40

Fool-proof magnet 41

Limiting groove 42

Cover plate 43

Upper jig 50

Receiving hole 52

Control member 60

Detailed Description

It is to be understood that the terms used in the specification are exemplary terms that can be understood by those skilled in the art, that the various terms are used only for describing particular embodiments and are not intended to limit the scope of the present invention, that the numerical values used in the claims include a plurality of meanings, that a description of "an element" or "at least one element" refers to one or no limitation of the number of elements, and that the flow of a method or sequence includes equivalents and changes known to those skilled in the art. All technical terms, joints and expressions used in similar situations should also be interpreted in the broadest sense, and the meaning of a particular direction, joint and characteristic means or technical expressions described in the context of the description is likewise to be understood as encompassing equivalent means or techniques which the particular term is intended to fulfil the function.

The technical contents and features of the present invention will be described in detail below with reference to preferred embodiments and accompanying drawings, and therefore, the scope of claims is not limited to the contents described in the specification. Furthermore, the preferred embodiment is exemplified by the magnet being disposed at the mounting position of the protective cover for tablet computer (keyboard), but it is also applicable to other different sizes or different types of articles requiring the magnet to be mounted.

As shown in fig. 1, the magnet assembling apparatus and method according to a preferred embodiment of the present invention are mainly used to arrange a plurality of magnets 12, which are magnetically stacked together in a predetermined arrangement, at assembly positions respectively according to application requirements, and specifically, in the preferred embodiment, the term "magnet group 10" is used as a collective name of the plurality of magnets 12, the plurality of magnets 12 included in the magnet group 10 are arranged in a plurality of longitudinal rows (in the vertical direction in the figure) in a stacked manner of being continuously adjacent and side-by-side, and a single transverse row (in the left-right direction in the figure) as an example, the magnets 12 in the longitudinal rows are magnetically stacked together, and the magnets 12 in the longitudinal rows of the magnet group 10 are in an upright shape during the assembly process, and then the magnets 12 are arranged in a row and a column at the assembly positions respectively. The assembly method of the magnet 12 includes the following main steps:

1. as shown in fig. 1, 4 and 6, the magnet assembly 10 is disposed on an upper fixture 20 in an adjacent or abutting manner, the upper fixture 20 includes a vertical inner side surface 22, and the magnet assembly 10 is vertically adjacent to or abutting against the inner side surface 22 of the upper fixture 20. The upper fixture 20 and the magnet assembly 10 are located above a body 30, the body 30 of the preferred embodiment is plate-shaped and has a strip-shaped groove 32 on the surface, the length and width of the groove 32 are generally greater than the length and width of a single transverse row of magnets 12 of the magnet assembly 10, the depth of the groove 32 is generally equal to the height of the single transverse row of magnets 12, and the body 30 can be placed on a support 40 and then positioned or moved along with the support 40. The upper jig 20 can be made of a non-magnetic material such as stainless steel, plastic, bakelite, copper, aluminum, and alloys thereof, and can also be made of a transparent non-magnetic material such as glass, PC (polycarbonate), PMMA (acrylic), and the like, so as to facilitate the inspection of the number of the magnet sets 10.

2. As shown in fig. 1, one of the upper jig 20 together with the magnet assembly 10 or the moving body 30 is moved such that the position of the magnet assembly 10 corresponds to the position of the recess 32 of the body 30. In this step, the body 30 may be fixed and the upper fixture 20 may be moved according to the actual assembly requirement, or the upper fixture 20 may be fixed and the body 30 may be moved in an opposite manner, as long as the magnet assembly 10 and the groove 32 of the body 30 correspond to each other.

3. As shown in fig. 2, the magnet assembly 10 is moved such that the single transverse row of magnets 12 at the bottom layer of the magnet assembly 10 is completely located inside the groove 32, and the magnet assembly 10 of the preferred embodiment is moved down to the groove 32 of the body 30 along the inner side surface 22 of the upper fixture 20 as an example.

4. As shown in fig. 3 to 5, one of the upper jig 20 and the moving body 30 of the magnet assembly 10 is moved, so that the magnets 12 in the transverse row inside the recess 32 are separated from the magnets 12 in the other transverse rows of the magnet assembly 10, and the single magnet 12 in the transverse row inside the recess 32 can be set in the assembling position. For illustration, in the preferred embodiment, the upper jig 20 and the body 30 are moved with a time difference to separate the magnet assembly 10 from the magnets 12 located in the groove 32, specifically, as shown in fig. 7 to 9, the upper jig 20 together with the magnet assembly 10 is first shifted by an angle relative to the body 30, so that the single transverse row magnets 12 located in the groove 32 at the bottom layer of the magnet assembly 10 are gradually shifted from the magnet assembly 10 from one side direction, and then shifted from the magnet assembly 10 to the other side direction until the transverse row magnets 12 located in the groove 32 are completely separated from the magnet assembly 10. A bonding layer, such as an adhesive, may be disposed within recess 32 of body 30 to further secure magnet 12 within recess 32.

According to the scheme, the whole magnet group 10 is directly arranged on the upper jig 20, the transverse row magnets 12 at the bottommost layer of the magnet group 10 are limited in the grooves 32 through the relative movement between the upper jig 20 and the body 30, and then the single transverse row magnets 12 at the bottommost layer of the magnet group 10 are fixed in the grooves 32 of the body 30 in a separation mode with time difference, so that the effect that the magnets 12 at the bottommost layer can be separated in a row by the upper jig 20 and the body 30 is achieved, the assembly process of the magnets 12 is simplified, the assembly speed of the magnets 12 is increased, and the operation efficiency of the whole assembly process is improved.

The single transverse row of magnets 12 at the bottom of the magnet group 10 leaning against the upper jig 20 can be separated and arranged at the assembling position only by relative movement between the upper jig 20 and the body 30. For example, the upper jig 20 and the magnet assembly 10 are moved so that the single transverse row of magnets 12 located inside the recess 32 is separated from the other plurality of magnets 12 of the magnet assembly 10. Or, the main body 30 is disposed on the planar supporting member 40, then the main body 30 is moved along the supporting member 40 to a position below the magnet assembly 10, then the magnet assembly 10 is moved downward so that the single transverse row of magnets 12 located at the bottom layer of the magnet assembly 10 is disposed in the groove 32 of the main body 30, and the main body 30 is moved relative to the upper jig 20 so that the upper jig 20, the other plurality of magnets 12 of the magnet assembly 10, and the single transverse row of magnets 12 located in the groove 32 (the magnets at the bottom layer of the magnet assembly 10) are separated from each other. Furthermore, as shown in fig. 6, the main body 30 can be disposed in the limiting groove 42 of the supporting member 40, and after the transverse row of magnets 12 at the bottom layer of the magnet assembly 10 is located in the groove 32 of the main body 30, the main body 30 is driven by moving the supporting member 40, so that the single transverse row of magnets 12 located in the groove 32 can be separated from the other magnets 12 of the magnet assembly 10.

In order to allow the single transverse row of magnets 12 at the bottom of the magnet assembly 10 to be stably disposed in the recess 32 of the body 30, as shown in fig. 6, a fool-proof magnet 41 may be additionally disposed inside the supporting member 40, the position interval of the fool-proof magnet 41 corresponds to the position of the recess 32 of the body 30, and a magnetic attraction force exists between the fool-proof magnet 41 and the magnet assembly 10. When the magnet 12 in the transverse row at the bottom of the magnet assembly 10 is disposed in the groove 32, the magnet and the fool-proof magnet 41 can generate a magnetic attraction force, and when the magnet 12 in the transverse row at the bottom is separated from the other magnets 12 of the magnet assembly 10, the magnet is not easily separated from the groove 32, and meanwhile, the problem of assembly errors can be avoided.

As shown in fig. 10 to 14, the upper jig 20 of the present disclosure may further include at least one retaining wall 24 or two retaining walls 24 (see fig. 12) spaced apart from each other and parallel to the inner side surface 22, wherein the retaining wall 24 may be flush with the side edge (see fig. 11 and 13) of the upper jig 20 or may be spaced apart from the side edge by a predetermined distance (see fig. 10 and 12), so that when the magnet assembly 10 is adjacent to or abutted against the upper jig 20, the retaining wall 24 may laterally limit the position of the magnet assembly 10, and the upper jig 20 is held by the thumb of the operator to hold the magnet assembly 10, and other fingers hold the outer side surface of the upper jig 20 to subsequently move and separate the magnet assembly 10. As shown in fig. 15 and 16, the upper fixture 50 includes a long accommodating hole 52 penetrating vertically, the inner side surface 22 of the upper fixture 50 is located on one inner wall surface of the accommodating hole 52, and the length and width of the cross section of the accommodating hole 52 is substantially greater than the length and width of the magnet set 10, so that the magnet set 10 can be accommodated and slide in the accommodating hole 52 of the upper fixture 50.

As shown in fig. 17, when the magnets 12 to be assembled are arranged discontinuously and at intervals, the upper fixture 50 may have a plurality of accommodating holes 52, the longitudinal row magnets 12 of the magnet assembly 10 are respectively disposed in the accommodating holes 52 according to the assembly requirement, and the main body 30 is also provided with a plurality of grooves 32 corresponding to the longitudinal row magnets 12, so that the upper fixture 50 drives the magnet assembly 10 to dispose the magnets 12 in the grooves 32 respectively. As shown in fig. 18, the main body 30 has a plurality of rows of grooves 32 for disposing the magnets 12, when the polarities of the magnets 12 in two adjacent grooves 32 are the same, the upper jig 50 can move and separate the magnets 12 relative to the main body 30 in the same direction, and as shown in fig. 19, when the polarities of the magnets 12 in two adjacent grooves 32 are opposite, the upper jig 50 can dispose the magnets 12 with opposite polarities in different grooves 32 by reversing the polarities of the magnets 12 in the grooves 32 from top to bottom.

Through the technical features and the improvement effects of the present invention, the present invention can be further applied to an automated magnet 12 assembling process, as shown in fig. 20 and 21, which is an example of how to automatically assemble a plurality of rows or columns of magnets 12 on the surface of the body 30 when the preferred embodiment is applied to the automated magnet assembling process. The upper fixture 50 can be provided with a plurality of accommodating holes 52 with specific arrangement according to the actual assembly position of the magnet on the body 30, as shown in fig. 21 and 22, the plurality of accommodating holes 52 of the upper fixture 50 are respectively provided with a plurality of longitudinal magnets 12 in advance, the body 30 is provided with a plurality of grooves 32 for receiving the support member 40 of the body 30 and also provided with fool-proof magnets 41 with positions corresponding to the grooves 32, the fool-proof magnets 41 are fixed on the support member 40 through a cover plate 43 or gluing, the fool-proof magnets 41 can also absorb the magnets 12, and errors in the assembly direction of the magnets 12 can be avoided.

When the present application is to apply an automatic magnet assembly process to the body 30 to simultaneously arrange a plurality of rows or a plurality of rows of magnets 12, the method mainly comprises the following steps:

1. as shown in fig. 23, the upper jig 50 moves to the upper side of the body 30 together with all the vertical rows of magnets 12, and in order to ensure that all the vertical rows of magnets 12 are maintained inside the upper jig 50 and will not fall down, when the magnetic attraction force between the vertical rows of magnets 12 is greater than the self-weight, the magnetic attraction force between the magnets 12 is sufficient to magnetically attract each other and position the magnets 12 on the upper jig 50. Or in order to prevent the longitudinal rows of magnets 12 pre-placed in the containing holes 52 from falling from the upper fixture 50 under the influence of their own weight, the upper fixture 50 may be selectively provided with a movable or rotatable control element 60 (the operation of the control element 60 rotatably disposed on the upper fixture 50 will be described later). The control member 60 is made of a magnet or a magnetic material and has magnetism with the magnet group 10, when the control member 60 moves close to the upper jig 50 and can attract the magnet 12 by the magnetism, the magnet 12 will not fall from the upper jig 20, and as shown in fig. 25, when the control member 60 moves away from the upper jig 50, the magnet 12 can fall from the upper jig 50. Alternatively, as shown in fig. 29 and 30, the control member 60 may be disposed near the magnets 12 in each row or column according to actual requirements, so long as a sufficient magnetic field is generated between the control member 60 and the magnets 12, even if the distance between the magnets 12 in each row or column is small, the control member 60 is disposed on one side of each row or column to attract the magnets 12 by using the magnetic force between the adjacent magnets 12.

2. As shown in fig. 24, the upper jig 50 moves down to the body 30 together with all the longitudinal rows of magnets 12, each longitudinal row of magnets 12 corresponding to each groove 32 of the body 30.

3. As shown in fig. 25, when the upper fixture 50 moves down to the main body 30, the magnetic attraction force of the fool-proof magnet 41 under the main body 30 is selectively set to be greater than the magnetic attraction force of the corresponding magnet 12, so that each of the vertical rows of magnets 12 is attracted into the recess 32 by the magnetic attraction force of the fool-proof magnet 41. If the upper jig 50 is provided with the control member 60, that is, the magnetic attraction between the magnets 12 is smaller than the self-weight, and the control member 60 is required to be arranged to enable the magnets 12 to be attracted to the upper jig 50, the control member 60 can be far away from or rotate relative to the upper jig 50, so that the longitudinal magnets 12 which are not attracted by the magnetic force fall into the grooves 32 by using the self-weight and the magnetic attraction of the foolproof magnets 41, and each magnet 12 is not easy to move again by using the magnetic attraction between the magnet 12 and the foolproof magnets 41. If the magnetic force between the control member 60 and the magnet 12 is smaller than the magnetic force between the magnet 12 and the foolproof magnet 41, the control member 60 can allow the magnet 12 to fall into the recess 32 only by the magnetic force between the magnet 12 and the foolproof magnet 41 even if the control member 60 is not removed from the upper jig 50.

4. As shown in fig. 26, the upper fixture 50 is moved transversely approximately 1 slot 32 so that the lowermost magnet 12 of each longitudinal row of magnets 12 already located in the slot 32 is separated from the other magnets, thereby automatically arranging a plurality of rows or columns of magnets 12 on the body 30. The displaced longitudinal rows of magnets 12 and the lowermost magnets 12 already located in the grooves 32 of the body 30 generate a mutual repulsion phenomenon, so that the magnets 12 located in the grooves 32 can be more attached to the bottom surface of the grooves 32 of the body 30 under the action of magnetic force, and the magnets 12 can be more easily separated, and the displaced upper jig 50 can be optionally adjacent to the control member 60 again to attract the remaining longitudinal rows of magnets 12 again.

It should be noted that, in order to prevent the magnet 12 inside the most lateral groove 32 of the body 30 from being separated again due to vibration after the upper fixture 50 is laterally displaced, the upper fixture 50 may be additionally provided with a longitudinal row magnet 13, and the longitudinal row magnet 13 is adjacently disposed outside the most lateral accommodating hole 52 of the upper fixture 50, as shown in fig. 25 and 26, so that the magnet 12 inside the most lateral groove 32 of the body 30 is also attached to the bottom surface of the groove 32 of the body 30 under the magnetic force of the longitudinal row magnet 13 after the upper fixture 50 is laterally displaced.

5. As shown in fig. 27 and 28, the upper jig 50 and each of the longitudinal rows of magnets 12 are moved upward away from the body 30 and reset.

As shown in fig. 24, when the control element 60 is rotatably disposed on the upper fixture 50, the control element 60 can rotate 90 degrees in the counterclockwise direction, so that the magnets 12 at the bottom layer fall into the recess 32 under the magnetic attraction of the foolproof magnet 41, when the magnets 12 at the bottom layer are separated from other magnets and move by a distance, the magnets 12 repel each other with the foolproof magnet 41 and the magnets 12 at the bottom layer, and the control element 60 rotates 90 degrees in the clockwise direction and attracts the magnets 12 in the longitudinal rows of the upper fixture 50.

In addition to the operation flow of the automatic assembly process, the upper jig 50 may be changed to move up and down together with all the longitudinal magnets 12, wait for the upper jig 50 to be disposed on the main body 30, and then allow the main body 30 to move laterally, or alternatively, in order to allow the magnets 12 disposed on the upper jig 50 to be stable during the assembly process, the upper jig 50 is kept stationary, but the main body 30 moves up and down and laterally corresponding to the upper jig 50, and further separates the magnets 12 disposed inside the upper jig 50, which also achieves the main purpose of the present invention, and can also prevent the magnets from being displaced by mistake during the automatic assembly process, thereby preventing the occurrence of problems and improving the process efficiency and quality.

The upper jig can be made of transparent materials to facilitate the inspection of the internal magnet, or the opaque materials are additionally provided with inductive switches such as a magnetic reed switch, a proximity switch, an infrared switch and the like to detect whether the magnet is still in the containing hole of the upper jig, so as to be used as a feedback mechanism of the automatic assembly process.

Claims

1. A magnet assembly method, for set up a plurality of magnets of a magnet group in the assembly position respectively, a plurality of magnets that the magnet group includes are according to a plurality of longitudinal rows adjoin in succession side by side and single horizontal line way pile up, the mutual magnetic attraction piles up between the magnet of the longitudinal row, and the magnet group in the assembly process is in the vertical form with the magnet of the longitudinal row, set up the magnet in the assembly position respectively in a line; the assembling method comprises the following steps:

a. the magnet group is adjacent to or propped against an upper fixture which is positioned above a body;

b. moving one of the upper jig together with the magnet set or the body so that the position of the magnet set corresponds to a groove of the body;

c. a plurality of magnets positioned at the bottommost layer of the magnet group are positioned in the groove;

d. moving one of the upper jig and the body together with the magnet group to separate the magnets at the bottommost layer in the groove from the other magnets of the magnet group so as to be arranged at the assembling position;

the upper jig is further provided with a longitudinal moving magnet which is adjacent to the outer side of the magnet group at the most lateral side of the upper jig, so that after the upper jig is transversely displaced, the most lateral magnet in the groove of the body can be attached to the bottom surface of the groove of the body under the action of the magnetic force of the longitudinal moving magnet.

2. The method according to claim 1, wherein the step d comprises moving the upper jig and the other magnets of the magnet set so that the magnets at the bottom layer inside the recess are separated from the other magnets of the magnet set.

3. The method of claim 1, wherein the step b is to move the body such that the magnet set is located above the body and corresponds to the recess.

4. The method of claim 1, wherein the step d is moving the body so that the magnets at the bottom layer inside the recess are separated from the other magnets of the magnet set.

5. The method according to claim 1, wherein the step b is to move the upper fixture together with the magnet assembly so that the magnet assembly is located above the body and corresponds to the recess.

6. The method of claim 1, wherein the magnet assembly comprises a plurality of longitudinal rows of magnets arranged side-by-side, the longitudinal rows of magnets being adjacent to or spaced apart from each other.

7. The method of claim 6, wherein the magnetic poles of each of the plurality of longitudinal rows of magnets are arranged in opposite polarity.

8. The method of claim 1, wherein the step b is performed by disposing the body on a support.

9. The method according to claim 8, wherein the step d is to move the supporting member to drive the body, so that the magnets at the bottom layer inside the recess are separated from the other magnets of the magnet set.

10. The method of claim 8, wherein the support member has a magnet disposed therein corresponding to the recess.

11. The method as claimed in claim 10, wherein when the upper fixture moves toward the main body or the supporting member drives the main body to move toward the upper fixture, the polarity of the magnet set is opposite to the polarity of the foolproof magnet.

12. The method of claim 10, wherein when the other magnets of the magnet set and the bottom magnets are separated and moved to another distance, the magnetism of the magnet set and the magnetism of the fool-proof magnet repel each other.

13. The method according to claim 1, wherein the step c comprises moving the upper jig and the magnet set downward to the body such that the magnets at the bottom layer of the magnet set are located inside the grooves.

14. The method according to claim 1, wherein the step c is performed by moving the body upward to the upper jig so that the plurality of magnets located at the bottom layer of the magnet group are located inside the groove.

15. The method of claim 1, wherein the upper fixture and the magnet assembly can be reversed to place a plurality of magnets in the recess.

16. The method according to claim 1, wherein the upper fixture includes at least one retaining wall.

17. The method according to claim 1, wherein the upper fixture includes an inner surface on which the magnet assembly is disposed.

18. The method of claim 17, wherein the upper fixture has at least one receiving hole, and the inner surface is disposed on an inner wall surface of the at least one receiving hole.

19. The method according to claim 1, wherein the upper jig separates the plurality of magnets of the magnet group with a time difference.

20. The method according to claim 1, wherein the upper fixture is made of a non-magnetic material.

21. The method of assembling a magnet according to claim 1, wherein the recess is provided with a bonding layer capable of bonding the magnet.

22. The method of claim 1, wherein the upper fixture is made of a transparent material.

23. The method of claim 1, wherein the upper fixture has a movable control member, the control member has magnetic or magnetic permeability, and the control member is close to the upper fixture to make the plurality of magnets adhere to the upper fixture.

24. The method as claimed in claim 23, wherein the control member is away from the upper fixture, and the magnet assembly is lowered into the recess.

25. The method of claim 23, wherein the control member is made of a magnet or a magnetically conductive material.

26. A magnet assembly apparatus for use in the magnet assembly method of any one of claims 1 to 25.