CN113814916A

CN113814916A - Assembling equipment

Info

Publication number: CN113814916A
Application number: CN202010695935.1A
Authority: CN
Inventors: 姜海龙; 张猛
Original assignee: Beijing Jingdong Century Trading Co Ltd; Beijing Wodong Tianjun Information Technology Co Ltd
Current assignee: Beijing Jingdong Century Trading Co Ltd; Beijing Wodong Tianjun Information Technology Co Ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-12-21
Anticipated expiration: 2040-07-17
Also published as: CN113814916B

Abstract

The present disclosure provides an assembly apparatus, the assembly apparatus comprising: the base, a plurality of spacing post, a plurality of fixed locating part and a plurality of activity locating part. Wherein the chassis includes a middle portion and an edge portion, the middle portion including a first set of adjacent edges and a second set of adjacent edges. A plurality of spacing posts are connected to the middle portion. The plurality of fixed limiting pieces are connected to the edge portion, and the plurality of fixed limiting pieces are located at positions close to the first group of adjacent edges. The plurality of movable limiting pieces are connected to the edge part and are positioned close to the second group of adjacent edges. The plurality of limiting columns are configured to limit a first part to be assembled in the middle part, and the plurality of fixed limiting pieces and the plurality of movable limiting pieces are configured to be matched with each other to adjust the position of a second part to be assembled in the middle part, so that the second part to be assembled is aligned with the first part to be assembled.

Description

Assembling equipment

Technical Field

The present disclosure relates to the field of mechanical technology, and more particularly, to an assembling apparatus.

Background

During the machining of the device, it is often necessary to assemble a plurality of parts to be assembled in order to obtain a complete device. For example, the devices to be assembled include speakers, cell phones, computers, and the like. Such devices typically include a display component. When assembling the display component, a first component to be assembled of the display component, which may be a front case, and a second component to be assembled of the display component, which may be a display screen, need to be assembled.

In carrying out the presently disclosed concept, the inventors have found that there are at least the following problems in the related art.

When a plurality of parts to be assembled are assembled, the plurality of parts to be assembled are generally aligned manually, and the assembly accuracy is low due to the manual alignment.

Disclosure of Invention

In view of this, the present disclosure provides an optimized assembly device.

The present disclosure provides an assembly apparatus, comprising: the base, a plurality of spacing post, a plurality of fixed locating part and a plurality of activity locating part. Wherein the chassis includes a middle portion and an edge portion, the middle portion including a first set of adjacent edges and a second set of adjacent edges. The plurality of restraint posts are connected to the middle portion. A plurality of fixed stops are connected to the edge portion, the plurality of fixed stops being located proximate to the first set of adjacent edges. A plurality of movable limiting members are connected to the edge portion, the plurality of movable limiting members being positioned adjacent to the second set of adjacent edges. The plurality of limiting columns are configured to limit a first component to be assembled in the middle portion, and the plurality of fixed limiting pieces and the plurality of movable limiting pieces are configured to be matched with each other to adjust the position of a second component to be assembled in the middle portion, so that the second component to be assembled is aligned with the first component to be assembled.

According to the embodiment of the present disclosure, each movable limiting structure of the plurality of movable limiting members includes: the fixing piece, the moving piece and the elastic device. The elastic device is configured to store elastic potential energy when the movable member receives an external force, or release the elastic potential energy to enable the movable member to move, wherein the movable member is configured to move along a horizontal direction.

According to an embodiment of the present disclosure, the movable member includes: a movable block and a movable column. Wherein, the movable block movably connect in the marginal portion, the activity post is fixed in the movable block, and the activity post movably connect in the mounting, wherein, resilient means cup joints in the activity post.

According to an embodiment of the present disclosure, the first group of adjacent edges includes a first edge and a second edge, and the plurality of fixed position-limiting members includes four fixed position-limiting members, where two fixed position-limiting members are located at positions close to the first edge, and the other two fixed position-limiting members are located at positions close to the second edge.

According to an embodiment of the present disclosure, the second group of adjacent sides includes a third side and a fourth side, and the plurality of movable limiting members includes four movable limiting members, where two movable limiting members are located at positions close to the third side, and the other two movable limiting members are located at positions close to the fourth side.

According to an embodiment of the present disclosure, the above assembly apparatus further comprises a plurality of support members connected to the middle portion.

According to an embodiment of the present disclosure, each of the plurality of support members includes: support fixed part, activity support column and support elastic component. The supporting and fixing part is fixed on the middle part, the movable supporting column is movably connected with the supporting and fixing part, and the supporting elastic piece is sleeved on the movable supporting column, wherein the supporting elastic piece is configured to store elastic potential energy under the action of external force, and the movable supporting column is configured to move along the vertical direction.

According to an embodiment of the present disclosure, each of the plurality of support members further includes a buffer device connected to an end of the movable support column.

According to an embodiment of the present disclosure, the plurality of support members are disposed to pass through the first part to be assembled having a hollow structure and support the second part to be assembled in a vertical direction.

According to an embodiment of the present disclosure, the first group of adjacent edges and the second group of adjacent edges form four vertex angles, the plurality of limiting columns include at least three limiting columns, and the at least three limiting columns are located at positions close to the four vertex angles.

According to the embodiment of the disclosure, the problem of low assembly precision caused by manually aligning a plurality of parts to be assembled in the related art can be at least partially solved by using the assembling device, and therefore, the technical effect of improving the assembly precision can be achieved.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following description of embodiments of the present disclosure with reference to the accompanying drawings, in which:

FIG. 1 schematically illustrates a block diagram of an assembly apparatus according to an embodiment of the disclosure;

FIG. 2 schematically illustrates a block diagram of an assembly apparatus according to another embodiment of the present disclosure;

FIG. 3 schematically illustrates a cross-sectional schematic view of an assembly apparatus according to an embodiment of the disclosure;

FIG. 4 schematically illustrates a block diagram of a movable stop according to an embodiment of the disclosure;

FIG. 5 schematically illustrates a block diagram of a support component according to an embodiment of the disclosure;

fig. 6 schematically shows a structural view of a first part to be assembled according to an embodiment of the present disclosure;

figure 7 schematically shows a schematic view of a first part to be assembled in an assembly apparatus according to an embodiment of the disclosure;

FIG. 8 schematically illustrates a block diagram of a second component to be assembled according to an embodiment of the disclosure;

figure 9 schematically illustrates a schematic view of a second component to be assembled in an assembly apparatus according to an embodiment of the disclosure; and

fig. 10 schematically illustrates a cross-sectional schematic view of an assembly apparatus according to another embodiment of the disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

An embodiment of the present disclosure provides an assembling apparatus, including: the base, a plurality of spacing post, a plurality of fixed locating part and a plurality of activity locating part. Wherein the chassis includes a middle portion and an edge portion, the middle portion including a first set of adjacent edges and a second set of adjacent edges. A plurality of spacing posts are connected to the middle portion. The plurality of fixed limiting pieces are connected to the edge portion, and the plurality of fixed limiting pieces are located at positions close to the first group of adjacent edges. The plurality of movable limiting pieces are connected to the edge part and are positioned close to the second group of adjacent edges. The plurality of limiting columns are configured to limit a first part to be assembled in the middle part, and the plurality of fixed limiting pieces and the plurality of movable limiting pieces are configured to be matched with each other to adjust the position of a second part to be assembled in the middle part, so that the second part to be assembled is aligned with the first part to be assembled.

Fig. 1 schematically shows a block diagram of an assembly apparatus according to an embodiment of the present disclosure.

As shown in fig. 1, the assembly apparatus 10 may include: the base 100, a plurality of limiting columns 200, a plurality of fixed limiting members 300 and a plurality of movable limiting members 400.

In the disclosed embodiment, the chassis 100 may include a middle portion 110 and an edge portion 120. Fig. 1 indicates, for example, the middle portion 110 and the edge portion 120 with a dashed box as an example. For example, inside the dashed box is the middle portion 110 and outside the dashed box is the edge portion 120.

Wherein the middle portion 110 includes a first set of adjacent edges and a second set of adjacent edges. For example, the middle portion may be a near quadrilateral structure including four sides, the four sides being an upper side, a lower side, a left side, and a right side, respectively. In one example, the top and right edges are defined as a first set of adjacent edges and the bottom and left edges are defined as a second set of adjacent edges.

A plurality of restraint posts 200 embodying the present disclosure may be connected to the intermediate portion 110, e.g., secured to the intermediate portion 110.

In the embodiment of the disclosure, the plurality of fixed position-limiting members 300 are connected to the edge portion 120, and the plurality of fixed position-limiting members 300 are located near the first group of adjacent edges. The plurality of fixed position limiters 300 are, for example, fixed to the edge portion 120.

In the embodiment of the disclosure, the plurality of movable position-limiting members 400 may be connected to the edge portion 120, and the plurality of movable position-limiting members 400 are located near the second group of adjacent edges. For example, the plurality of movable position limiters 400 may be movable relative to the base 100.

The assembling apparatus 10 of the embodiment of the present disclosure may be used to assist assembling the first part to be assembled 20 and the second part to be assembled 30. Therein, a first part to be assembled 20 is shown, for example, in fig. 6 and 7 below, and a second part to be assembled 30 is shown, for example, in fig. 8 to 10 below.

The plurality of limiting columns 200 are configured to limit the first component to be assembled 20 in the middle portion 110, and the plurality of fixed limiting members 300 and the plurality of movable limiting members 400 are configured to cooperate with each other to adjust the position of the second component to be assembled 30 in the middle portion 110, so that the second component to be assembled 30 is aligned with the first component to be assembled 20.

In one example, it is often necessary to assemble multiple parts to be assembled to obtain a complete device. For example, the devices to be assembled include speakers, cell phones, computers, and the like. Such devices typically include a display component. When assembling the display part, it is necessary to assemble the first part to be assembled 20 and the second part to be assembled 30 of the display part, the first part to be assembled 20 may be a front case, and the second part to be assembled 30 may be a display screen.

For example, the first part to be assembled 20 includes a plurality of positioning holes, and the first part to be assembled 20 is first placed in the middle portion 110, so that the plurality of limiting columns 200 pass through the plurality of positioning holes of the first part to be assembled 20, thereby achieving the limiting effect on the first part to be assembled 20. Then, the second to-be-assembled component 30 is placed toward the middle portion 110, so that the edge of the second to-be-assembled component 30 is firstly attached to the plurality of fixed limiting members 300, then the position of the second to-be-assembled component 30 is adjusted by the plurality of movable limiting members 400, so that the second to-be-assembled component 30 is attached to the plurality of movable limiting members 400, so that the second to-be-assembled component 30 is aligned with the first to-be-assembled component 20, and then the aligned second to-be-assembled component 30 is attached to the first to-be-assembled component 20.

It can be understood that the assembling device of the embodiment of the present disclosure assembles the first component to be assembled and the second component to be assembled by mutually matching the plurality of limiting columns, the plurality of fixed limiting pieces and the plurality of movable limiting pieces. Specifically, the first part to be assembled is limited through the plurality of limiting columns, and then the position of the second part to be assembled is adjusted through the mutual matching of the plurality of fixed limiting pieces and the plurality of movable limiting pieces, so that the second part to be assembled and the first part to be assembled are aligned, and the assembling precision of the first part to be assembled and the second part to be assembled is improved.

Fig. 2 schematically shows a block diagram of an assembly apparatus according to another embodiment of the present disclosure.

As shown in fig. 2, the first group of adjacent sides may include a first side a and a second side B, and the plurality of fixed position-limiting members 300 may include four fixed position-limiting members, which are respectively denoted as 300a, 300B, 300c, and 300 d.

Two of the fixed position-limiting members 300a, 300B are located near the first edge a, and the other two fixed position-limiting

members

300c, 300d are located near the second edge B.

In the embodiment of the disclosure, the second group of adjacent sides may include a third side C and a fourth side D, and the plurality of movable limiting members 400 may include four movable limiting members, which are respectively denoted as 400a, 400b, 400C, and 400D, for example.

Two of the movable limiting

members

400a and 400b are located near the third edge C, and the other two movable limiting members 400C and 400D are located near the fourth edge D.

As shown in fig. 2, the first and second sets of adjacent edges form four corners. The plurality of limiting columns 200 comprise at least three limiting columns, and the at least three limiting columns are located at positions close to the four vertex angles. For convenience of understanding, the embodiment of the present disclosure takes the example that the plurality of limiting columns 200 includes three limiting columns, which are respectively denoted as 200a, 200b, and 200c, for example. However, the number of the plurality of limiting columns 200 may be specifically set according to practical application, and is not limited to three.

According to an embodiment of the present disclosure, the assembly apparatus 10 may further include a plurality of support members 500, the plurality of support members 500 being connected to the middle portion 110. The plurality of support members 500 are used, for example, to support the second member to be assembled 30. Among them, a specific structure of the plurality of support members 500 will be described below.

Fig. 3 schematically shows a cross-sectional schematic view of an assembly apparatus according to an embodiment of the disclosure.

Fig. 3 is a schematic diagram of fig. 2 about a section I, and fig. 3 shows a movable limiting member 400, a supporting member 500 and a fixed limiting member 300. Wherein, the specific structure of the movable limiting member 400 will be described in fig. 4, and the specific structure of the supporting member 500 will be described in fig. 5.

Fig. 4 schematically shows a structure diagram of a movable limiting member according to an embodiment of the present disclosure.

As shown in fig. 4, each of the plurality of movable limiting structures 400 includes: a co-located member 410, a movable member 420, and a resilient means 430.

Wherein the fixing member 410 is connected to the edge portion 120, for example, the fixing member 410 is fixed to the edge portion 120 of the base 100. The movable member 420 is movably connected to the fixed member 410 and the edge portion 120, and the movable member 420 is configured to move along the horizontal direction E, for example, to reciprocate along the horizontal direction E.

The elastic means 430 is connected to the fixed member 410 and the movable member 420. The elastic device 430 is configured to store elastic potential energy when the movable element 420 receives an external force, or release the elastic potential energy to move the movable element 420.

For example, the resilient device 430 may comprise a spring, and when the spring is in a free state, the moveable member 420 may be, for example, in a position adjacent to the intermediate portion 110, such as a portion of the structure of the moveable member 420 extending from the edge portion 120 to the intermediate portion 110. When the second member to be assembled 30 is placed on the middle portion 110, the movable member 420 receives a pressing force from the second member to be assembled 30, and a portion of the movable member 420 extending to the middle portion 110 retracts toward the edge portion 120, at which time the elastic device 430 is pressed and stores elastic potential energy, so that the second member to be assembled 30 is in close contact with the fixed limiting member 300 and the movable limiting member 400. When the second to-be-assembled component 30 and the first to-be-assembled component 20 are assembled, the assembled second to-be-assembled component 30 and the assembled first to-be-assembled component 20 are taken out from the middle portion 110 of the base 100, the elastic device 430 releases the elastic potential energy to enable the movable member 420 to move, and part of the structure of the movable member 420 extends to reach the middle portion 110, and the elastic device 430 can be in a free state.

As shown in fig. 4, the movable member 420 may include a movable block 421 and a movable post 422.

Wherein the movable block 421 is movably connected to the edge portion 120, and the movable block 421 can also be movably connected to the fixed block 410.

The movable post 422 may be fixed to the movable block 421, and the movable post 422 may be movably connected to the stationary member 410. For example, the movable post 422 is inserted into the fixed member 410 and can move relative to the fixed member 410. Wherein the movable post 422 and the movable block 421 can move together as a whole. Wherein, the elastic device 430 is sleeved on the movable column 422.

Fig. 5 schematically illustrates a structural view of a support member according to an embodiment of the present disclosure.

As shown in fig. 5, each of the plurality of support members 500 may include: a support fixing part 510, a movable support column 520 and a support elastic member 530.

Wherein the support fixing part 510 may be fixed to the middle portion 110. The movable supporting column 520 is movably connected to the supporting and fixing portion 510, for example, the movable supporting column 520 penetrates through the middle portion 110 in the vertical direction F, and the movable supporting column 520 is configured to move along the vertical direction F.

The supporting elastic member 530 is sleeved on the movable supporting column 520, the supporting elastic member 530 is configured to store elastic potential energy under an external force, and the supporting elastic member 530 may be a spring. For example, when the supporting elastic member 530 is in a free state, the movable supporting column 520 is higher than the middle portion 110 in the vertical direction F, that is, a partial structure of the movable supporting column 520 protrudes out of the middle portion 110. When the second member to be assembled 30 is placed in the middle portion 110, the second member to be assembled 30 first contacts the movable supporting column 520, and when the second member to be assembled 30 moves downward in the vertical direction F, the second member to be assembled 30 presses the movable supporting column 520, causing the supporting elastic member 530 to store elastic potential energy under the pressing external force of the second member to be assembled 30. When the second part to be assembled 30 moves downward along the vertical direction F, the movable supporting column 520 functions to support the second part to be assembled 30, and under the elastic action of the supporting elastic member 530, the second part to be assembled 30 can be slowly attached downward to the first part to be assembled 20, so as to improve the assembling accuracy.

As shown in fig. 5, each of the plurality of support members 500 may further include a buffer 540, and the buffer 540 may be a sponge structure, a rubber structure, or the like. The buffer device 540 is connected to an end portion of the movable supporting column 520, for example, an upper end portion of the movable supporting column 520, and when the movable supporting column 520 is in contact with the second component to be assembled 30, the buffer device 540 may be in contact with the second component to be assembled 30 to perform a buffering function.

Fig. 6 schematically shows a structural view of a first component to be assembled according to an embodiment of the present disclosure.

As shown in fig. 6, the first part to be assembled 20 may be a hollow structure, that is, the first part to be assembled 20 is a ring-shaped structure, and the middle portion thereof is hollow.

Fig. 7 schematically shows a schematic view of a first component to be assembled in an assembly apparatus according to an embodiment of the disclosure.

As shown in fig. 7, when the first part to be assembled 20 is placed in the middle portion 110 of the assembling apparatus 10, since the middle of the first part to be assembled 20 is hollow, the plurality of support members 500 are disposed to pass through the first part to be assembled 20 having a hollow structure, that is, the plurality of support members 500 are not shielded by the first part to be assembled 20, and the plurality of support members 500 are exposed to the outside.

Fig. 8 schematically shows a structural view of a second component to be assembled according to an embodiment of the present disclosure.

As shown in fig. 8, the second part to be assembled 30 may be a display screen.

Fig. 9 schematically illustrates a schematic view of a second component to be assembled in an assembly apparatus according to an embodiment of the disclosure.

As shown in fig. 9, when the second part to be assembled 30 is placed at the middle portion 110 of the assembling apparatus 10, the plurality of support members 500 are shielded by the second part to be assembled 30.

Fig. 10 is a schematic view about a section J in fig. 9, and fig. 9 shows that the support member 500 supports the second member to be assembled 30, for example, the support member 500 is in contact with the second member to be assembled 30.

It can be understood that, according to the assembling device disclosed by the embodiment of the disclosure, the first component to be assembled and the second component to be assembled are assembled by mutually matching the plurality of limiting columns, the plurality of fixed limiting pieces and the plurality of movable limiting pieces, so that the assembling precision of the first component to be assembled and the second component to be assembled is improved, and the assembling cost is reduced.

Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.

The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.

Claims

1. An assembly apparatus (10), wherein the assembly apparatus (10) comprises:

a chassis (100), the chassis (100) comprising a middle portion (110) and an edge portion (120), the middle portion (110) comprising a first set of adjacent edges and a second set of adjacent edges;

a plurality of restraint posts (200), the plurality of restraint posts (200) connected to the intermediate portion (110);

a plurality of fixed stops (300) connected to the edge portion (120), the plurality of fixed stops (300) being located adjacent to the first set of adjacent edges; and

a plurality of movable stops (400) connected to the edge portion (120), the plurality of movable stops (400) being positioned adjacent to the second set of adjacent edges;

wherein the plurality of limiting columns (200) are configured to limit a first component to be assembled (20) at the middle part (110), and the plurality of fixed limiting pieces (300) and the plurality of movable limiting pieces (400) are configured to cooperate with each other to perform position adjustment on a second component to be assembled (30) at the middle part (110) so that the second component to be assembled (30) is aligned with the first component to be assembled (20).

2. The assembly device (10) according to claim 1, wherein each movable limiting structure (400) of the plurality of movable limiting structures (400) comprises:

a fixture (410) connected to the edge portion (120);

a movable member (420) movably connected to the fixed member (410) and the edge portion (120); and

an elastic device (430) connected to the fixed member (410) and the movable member (420), wherein the elastic device (430) is configured to store elastic potential energy when the movable member (420) receives an external force or release the elastic potential energy to move the movable member (420),

wherein the movable member (420) is configured to move in a horizontal direction.

3. The assembly device (10) according to claim 2, wherein the mobile element (420) comprises:

a movable block (421) movably connected to the edge portion (120); and

a movable post (422), the movable post (422) is fixed to the movable block (421), and the movable post (422) is movably connected to the fixed member (410),

wherein, the elastic device (430) is sleeved on the movable column (422).

4. The assembly apparatus (10) of claim 1, wherein:

the first set of adjacent edges comprises: a first edge and a second edge;

the plurality of fixed limiters (300) comprises: four fixed limiting parts are arranged on the base,

two fixed limiting parts are positioned at positions close to the first edge, and the other two fixed limiting parts are positioned at positions close to the second edge.

5. The assembly apparatus (10) of claim 1, wherein:

the second set of adjacent edges comprises: a third side and a fourth side;

the plurality of movable stoppers (400) include: four movable limiting parts are arranged on the base,

two movable limiting parts are positioned at positions close to the third edge, and the other two movable limiting parts are positioned at positions close to the fourth edge.

6. The assembly device (10) according to any one of claims 1 to 5, wherein the assembly device (10) further comprises:

a plurality of support members (500), the plurality of support members (500) being connected to the intermediate portion (110).

7. The assembly device (10) of claim 6, wherein each support member (500) of the plurality of support members (500) comprises:

a support fixing portion (510) fixed to the intermediate portion (110);

a movable support column (520) movably connected to the support fixing part (510); and

a supporting elastic member (530) sleeved on the movable supporting column (520), wherein the supporting elastic member (530) is configured to store elastic potential energy under the action of external force,

wherein the movable support column (520) is configured to move in a vertical direction.

8. The assembly device (10) of claim 7, wherein each support member (500) of the plurality of support members (500) further comprises:

a buffer device (540) connected with the end of the movable support column (520).

9. The assembly apparatus (10) according to claim 6, wherein the plurality of support members (500) are arranged to pass through the first part to be assembled (20) having a hollow structure and support the second part to be assembled (30) in a vertical direction.

10. The assembly device (10) according to any one of claims 1 to 5, wherein:

the first and second sets of adjacent edges form four apex angles;

the plurality of limiting columns (200) comprise at least three limiting columns, and the at least three limiting columns are located at positions close to the four top corners.