CN219854245U

CN219854245U - Positioning fixture and alignment system

Info

Publication number: CN219854245U
Application number: CN202320443783.5U
Authority: CN
Inventors: 王立强; 胡鹏举; 于洋; 刘宏华; 李振国; 郭少飞
Original assignee: BOE Technology Group Co Ltd; BOE Jingxin Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; BOE Jingxin Technology Co Ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-10-20
Anticipated expiration: 2033-03-09

Abstract

The application discloses a positioning clamp and an alignment system, wherein the positioning clamp is used for clamping a first component and comprises: a plurality of movable clamping plates, including a first clamping plate and a second clamping plate which are adjacently arranged; the fixing part comprises a first fixing part and a second fixing part, the first fixing part is arranged opposite to the first clamping plate, and the second fixing part is arranged opposite to the second clamping plate and is fixed at the position opposite to the first fixing part; and a plurality of alignment marks arranged on the fixed part and/or the movable clamping plate. The first fixing part and the first clamping plate are clamped on two sides of the first component, the second fixing part and the second clamping plate are clamped on the other two sides of the first component, and the positions of the plurality of alignment marks are fixed with the relative positions of the first component, so that the center position of the first component can be determined through the plurality of alignment marks, the accuracy of center positioning of the first component and the assembly accuracy are improved, and a series of poor products caused by poor manufacturing accuracy and poor positioning accuracy are further avoided.

Description

Positioning fixture and alignment system

Technical Field

The application belongs to the technical field of display equipment assembly, and particularly relates to a positioning clamp and an alignment system.

Background

In the assembly process of the display device, such as the assembly process of the light emitting substrate and the bracket, the center of the light emitting substrate needs to be aligned with the center of the bracket to meet the requirement of assembly accuracy. However, the corners of the existing brackets are rough to manufacture, the similarity is low, effective repeated identification and positioning cannot be carried out as marks, the assembly precision of the brackets and the luminous substrate is affected, the assembly precision is poor, defects such as breakage and black film bulge easily occur when the assembled finished products are spliced, and the appearance and the display effect of the display module are affected.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The utility model aims to solve the technical problem that the first component cannot be positioned accurately due to poor manufacturing precision at least to a certain extent. To this end, the utility model provides a positioning jig and an alignment system.

The embodiment of the utility model provides a positioning fixture, which is used for clamping a first component and comprises:

A plurality of movable clamping plates, including a first clamping plate and a second clamping plate which are adjacently arranged;

the fixing part comprises a first fixing part and a second fixing part, the first fixing part is arranged opposite to the first clamping plate, the second fixing part is arranged opposite to the second clamping plate, and the positions of the first fixing part and the second fixing part are relatively fixed; the method comprises the steps of,

and the alignment marks are arranged on the fixed part and/or the movable clamping plate.

In some embodiments, the positioning fixture comprises a fixture mount, the first securing portion is a first edge of the fixture mount, the second securing portion is a second edge of the fixture mount, and the first edge and the second edge are disposed adjacent.

In some embodiments, the clamp mount further comprises a third side and a fourth side; the first edge, the second edge, the third edge and the fourth edge are connected end to end in sequence;

the plurality of marks comprise a first alignment mark, a second alignment mark, a third alignment mark and a fourth alignment mark, wherein the first alignment mark is arranged on the first side, the second alignment mark is arranged on the second side, the third alignment mark is arranged on the third side, and the fourth alignment mark is arranged on the fourth side;

The plurality of movable clamping plates further comprise a third clamping plate and a fourth clamping plate, wherein the first clamping plate is arranged opposite to the third clamping plate, and the second clamping plate and the fourth clamping plate are arranged opposite to each other;

the first clamping plate is elastically connected with the third side, the second clamping plate is elastically connected with the fourth side, the third clamping plate is elastically connected with the first side, and the fourth clamping plate is elastically connected with the second side.

In some embodiments, the internal profile of the clamp mount is rectangular;

the first alignment mark, the second alignment mark, the third alignment mark and the fourth alignment mark are respectively positioned near four vertexes of the rectangle, or,

the first alignment mark, the second alignment mark, the third alignment mark and the fourth alignment mark are respectively positioned near four sides of the rectangle.

In some embodiments, the positioning fixture comprises a movable cleat assembly comprising a drive member and the movable cleat;

the positioning clamp comprises a first movable clamping plate assembly and a second movable clamping plate assembly which are adjacently arranged, wherein the first movable clamping plate assembly comprises a first driving piece and a first clamping plate, and the second movable clamping plate assembly comprises a second driving piece and a second clamping plate;

The first driving member is configured to control movement of the first clamping plate in a direction approaching and moving away from the first fixing portion, and the second driving member is configured to control movement of the second clamping plate in a direction approaching and moving away from the second fixing portion.

In some embodiments, the inner contour of the first edge is parallel to a side of the first cleat facing the first edge, the inner contour of the second edge is parallel to a side of the second cleat facing the second edge, and the inner contour of the first edge is perpendicular to the inner contour of the second edge.

In some embodiments, the plurality of marks includes a first alignment mark, a second alignment mark, a third alignment mark, a fourth alignment mark, wherein,

the first alignment mark is arranged on the first edge, the second alignment mark is arranged on the second edge,

the third alignment mark is arranged on the first clamping plate, and the fourth alignment mark is arranged on the second clamping plate.

In some embodiments, the positioning fixture includes a third movable cleat assembly disposed adjacent to the second movable cleat assembly, the third movable cleat assembly including a first stationary portion, a third drive member, and a third cleat;

the third driving member is configured to control movement of the third clamping plate in a direction approaching and moving away from the first clamping plate.

In some embodiments, the positioning fixture comprises a fixture fixing frame, the second fixing portion is one side of the fixture fixing frame, and one side of the fixture fixing frame is opposite to the second clamping plate.

In some embodiments, a profile of a side of the clamp mount facing the second clamp plate is parallel to a side of the second clamp plate facing the clamp mount, a side of the first clamp plate facing the third clamp plate is parallel to a side of the third clamp plate facing the first clamp plate, and the sides facing the second clamp plate and the first clamp plate facing the third clamp plate are perpendicular.

the first alignment mark is arranged on the first clamping plate, the second alignment mark is arranged on the second clamping plate, the third alignment mark is arranged on the third clamping plate, and the fourth alignment mark is arranged on one side of the clamp fixing frame.

In some embodiments, the positioning fixture includes a fourth movable cleat assembly disposed adjacent to the third movable cleat assembly, the fourth movable cleat assembly including a second stationary portion, a fourth drive member, and a fourth cleat;

the fourth driving member is configured to control movement of the fourth clamping plate in a direction approaching and moving away from the third clamping plate.

In some embodiments, a side of the first cleat facing the third cleat and a side of the third cleat facing the first cleat are parallel, and a side of the second cleat facing the fourth cleat and a side of the fourth cleat facing the second cleat are parallel.

In some embodiments, the plurality of marks includes a first alignment mark, a second alignment mark, a third alignment mark, and a fourth alignment mark, wherein the first alignment mark is disposed on the first cleat, the second alignment mark is disposed on the second cleat, the third alignment mark is disposed on the third cleat, and the fourth alignment mark is disposed on the fourth cleat.

In some embodiments, the driving member is a cylinder, an elastic member, or a motor.

In some embodiments, the first movable cleat assembly further comprises a third securing portion, and the second movable cleat assembly further comprises a fourth securing portion;

The positions of the first fixing part, the second fixing part, the third fixing part and the fourth fixing part are relatively fixed.

In some embodiments, the positioning fixture is configured such that, when the first member is placed between the first fixing portion and the first clamping plate and between the second fixing portion and the second clamping plate, a center line of each alignment mark encloses a pattern that coincides with a center of the first member in a front projection center of the extension surface of the first member.

In some embodiments, the plurality of marks includes a first alignment mark, a second alignment mark, a third alignment mark, a fourth alignment mark;

the positioning clamp is arranged in a way that under the condition that the first component is placed between the first fixing part and the first clamping plate and between the second fixing part and the second clamping plate, the connecting line of the first alignment mark and the third alignment mark is parallel to the contour edge of the first fixing part facing the first component, and the connecting line of the second alignment mark and the fourth alignment mark is parallel to the contour edge of the second fixing part facing the first component.

In some embodiments, the positioning fixture is configured to clamp a first member having a rectangular clamping profile.

In some embodiments, the material of the first member is ADC12 die cast aluminum.

The embodiment of the application also provides an alignment system, which comprises the positioning clamp, the alignment clamp, the visual component and the control component;

wherein the alignment jig is configured to clamp the second member;

the vision component is used for acquiring first image information of the first component clamped by the positioning clamp and acquiring a first characteristic position of the first component according to the alignment mark in the first image information; the vision component is further used for acquiring second image information of the second component clamped by the alignment fixture and acquiring a second characteristic position of the second component according to the second image information;

the control assembly is configured to control at least one of the positioning jig and the alignment jig to translate and raise and lower to align the first member and the second member.

In some embodiments, the alignment fixture is the same as or different from the positioning fixture.

In some embodiments, the first member is rectangular in shape; the second member is rectangular in shape;

the first feature location includes a center of the first member; the second feature location includes a center of a second member; the control assembly is arranged to control the orthographic projection of the centre of said second member onto said first member to coincide with the centre of said second member.

In some embodiments, the alignment system is an LED lighting substrate assembly alignment system; the first component is a bracket, and the second component is an LED luminous substrate;

wherein the material of the first member comprises aluminum.

The embodiment of the application has at least the following beneficial effects:

above-mentioned positioning fixture, first splint and second splint adjacent setting, the position relative fixed of first fixed part and second fixed part, first fixed part sets up with the centre gripping in the both sides of first component with first splint relatively, second fixed part sets up with the centre gripping in the other both sides of first component with second splint relatively, because a plurality of alignment marks set up on fixed part and/or movable splint, consequently, after positioning fixture centre gripping is in first component, the position of a plurality of alignment marks is fixed with the relative position of first component, can obtain the positional information of first component through a plurality of alignment marks indirectional, and then can confirm the central point of first component, thereby the accuracy to first component central point location has been improved and the relative structure is convenient for carry out central counterpoint, the assembly precision of first component is improved, and then avoid a series of products bad because the manufacturing precision is poor, the positioning precision is poor results in.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of a positioning jig according to a first embodiment of the present application;

FIG. 2 is a schematic diagram showing the operation of the positioning jig of FIG. 1;

FIG. 3 is a diagram showing a state in which a positioning jig clamps a first member according to a second embodiment of the present application;

FIG. 4 is a diagram showing a state in which a positioning jig holds a first member in accordance with a third embodiment of the present application;

FIG. 5 is a schematic view showing the structure of a positioning jig in a fourth embodiment of the present application;

FIG. 6 shows a state diagram of the positioning fixture of FIG. 5 clamping a first member;

FIG. 7 is a schematic view showing the structure of a positioning jig in a fifth embodiment of the present application;

FIG. 8 is a schematic view showing the structure of a positioning jig in a sixth embodiment of the application;

fig. 9 shows a positioning principle of the positioning jig of the present application.

Reference numerals:

1000. a first member; 1100. a center of the first member; 100. a clamp fixing frame; 110. a first fixing portion; 120. a second fixing portion; 130. a first edge; 140. a second side; 150. a third side; 160. fourth side; 210. a first clamping plate; 211. a first driving member; 220. a second clamping plate; 221. a second driving member; 230. a third clamping plate; 231. a third driving member; 240. a fourth clamping plate; 241. a fourth driving member; 300. an alignment mark; 310. a first alignment mark; 320. a second alignment mark; 330. a third alignment mark; 340. fourth alignment marks.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

the first aspect of the present application provides a positioning fixture configured to clamp a first member 1000, as shown in fig. 1 to 9, the positioning fixture including a plurality of movable clamping plates, a fixing portion, and a plurality of alignment marks 300, wherein the plurality of movable clamping plates includes a first clamping plate 210 and a second clamping plate 220 that are adjacently disposed; the fixing parts comprise a first fixing part 110 and a second fixing part 120, the first fixing part 110 is opposite to the first clamping plate 210, the second fixing part 120 is opposite to the second clamping plate 220, and the positions of the first fixing part 110 and the second fixing part 120 are relatively fixed; a plurality of alignment marks 300 are provided on the fixed portion and/or the movable clamping plate.

The positioning fixture, the first clamping plate 210 and the second clamping plate 220 are adjacently disposed, the positions of the first fixing portion 110 and the second fixing portion 120 are relatively fixed, the first fixing portion 110 and the first clamping plate 210 are relatively disposed to clamp two sides of the first member 1000, the second fixing portion 120 and the second clamping plate 220 are relatively disposed to clamp two other sides of the first member 1000, and the plurality of alignment marks 300 are disposed on the fixing portion and/or the movable clamping plate, so that after the positioning fixture clamps the first member 1000, the positions of the plurality of alignment marks 300 are fixed to the relative positions of the first member 1000, the positioning information of the first member 1000 can be indirectly obtained through the plurality of alignment marks 300, and then the position of the center 1100 of the first member can be determined, so that the accuracy of positioning the center 1100 of the first member is improved, the center alignment of the first member 1000 and the related structures is facilitated, the assembly accuracy of the first member 1000 is improved, and a series of poor products caused by poor manufacturing accuracy and positioning accuracy are avoided.

It should be noted that the positioning fixture of the present application is used for clamping the first member 1000, and includes, but is not limited to, alignment assembly to be assembled in the display. For example, the bonding and splicing technology of Mini Led COG (Chip On Glass) products can be used for alignment assembly of a bracket and a light-emitting substrate. In the following embodiments of the present application, the positioning jig of the present application will be exemplarily described with respect to the alignment assembly of the bracket and the light emitting substrate.

In the related art, the corners of the bracket of the first member 1000 to be assembled are rough and have low similarity, and after an image is acquired through a charge-coupled device (CCD), the corners of the bracket cannot be effectively and repeatedly identified as marks, which affects the assembly accuracy of the bracket and the light emitting substrate (BP). For example, the carriage dimensional accuracy fluctuates between-0.025 μm to +0.035 μm, which results in failure to accurately center and align by the CCD vision system. The measurement shows that the assembly accuracy in the X direction is 33.8 μm in the assembly of a certain group of brackets and the light-emitting substrate; the Y-direction assembly precision is 26.75 mu m, and the assembly precision is intersected, so that the assembled finished product is easy to damage and bad in black film bulge during splicing, and the appearance and the display effect are affected.

In the present embodiment, the relative fixing of the first fixing portion 110 and the second fixing portion 120 means that the relative positions of the first fixing portion 110 and the second fixing portion 120 remain unchanged, the connection manner of the first fixing portion 110 and the second fixing portion is not limited, and the first fixing portion 110 and the second fixing portion 120 may be separately provided, even if a certain distance is provided between the first fixing portion 110 and the second fixing portion 120; alternatively, the first and second fixing portions 120 are coupled together to form an integral structure. As shown in fig. 2, in the process of clamping the bracket, the positioning fixture has the first fixing portion 110 and the second fixing portion 120 fixed relatively, that is, the first fixing portion 110 and the second fixing portion 120 do not generate relative displacement; the first clamping plate 210 is disposed opposite to the first fixing portion 110 and is movable relative to the first fixing portion 110, the second clamping plate 220 is disposed opposite to the second fixing portion 120 and is movable relative to the second fixing portion 120, and the bracket can be clamped between the first fixing portion 110, the first clamping plate 210, the second fixing portion 120 and the second clamping plate 220 by the movement of the first clamping plate 210 and the second clamping plate 220, and the relative positions of the bracket and the fixing portion are fixed, so that the bracket is positioned at a specific position of the positioning jig. Meanwhile, the plurality of alignment marks 300 are arranged on the fixed part and/or the movable clamping plate, so that the positioning marks on the fixed part and/or the movable clamping plate are positioned at specific positions relative to the bracket, the center position of the bracket can be determined through the positioning marks, the luminous substrate is attached to the bracket, the high-precision alignment attachment of the center of the luminous substrate and the center of the bracket is realized, the assembly precision reaches +/-15 mu m, the assembly process precision requirement is met, the pixel point distance (Pitch) between adjacent luminous substrates in the splicing process is ensured to be within 3%, and the splicing appearance, the optical and display effects are improved; the physical seam of the COG product is eliminated, the display effect is improved, and the COG product can be applied to bracket assembly schemes of one-to-one and one-to-multiple.

It should be noted that, in the following embodiments of the present application, the alignment marks 300 are disposed on the fixture fixing frame 100 and/or the movable clamping plate, and a certain distance is provided between the alignment marks 300 and the surfaces of the fixture fixing frame 100 and/or the movable clamping plate for abutting against the first member 1000, so that in order to avoid the influence of the distance on positioning, the distances between each alignment mark 300 and the surfaces of the fixture fixing frame 100 and/or the movable clamping plate for abutting against the first member 1000 are equal, so that the distances between the two oppositely disposed alignment marks 300 and the surfaces of the fixture fixing frame 100 and/or the movable clamping plate for abutting against the first member 1000 cancel each other, and positioning errors are eliminated.

Those skilled in the art will recognize that for a particular contoured structure, when certain parameters are known, the features of the structure and its location can be determined, and further the center location of the structure can be determined. Taking a rectangular structure as an example, when certain parameters are known, the rectangular structure and its position can be determined, and further the center of the rectangular structure can be determined. As shown in fig. 9, after the vision assembly acquires the first image of the first member 1000 held by the alignment jig, at least the position of the first alignment mark 310, the position of the second alignment mark 320, the position of the third alignment mark 330, the position of the fourth alignment mark 340, and the direction of any one of the first clamping plate 210, the second clamping plate 220, the first side 130, and the second side 140 shown in fig. 9 can be read from the first image, wherein the straight line indicates the direction of any one of the first clamping plate 210, the second clamping plate 220, the first side 130, and the second side 140, the cross line indicates the alignment mark 300, the vision assembly can obtain a mark pattern as shown in the right side of fig. 9 on the above mark data through data processing, and it is necessary to ensure that all the alignment marks 300 are located on the sides of the mark pattern during the data processing, and at least one side of the mark pattern is the same as the direction of any one of the first clamping plate 210, the second clamping plate 220, the first side 130, and the second side 140. Meanwhile, since the minimum distances between each alignment mark 300 and the surfaces of the first side 130, the first clamping plate 210, the second side 140, and the second clamping plate 220 for abutting against the first member 1000 are equal, the vertical distances between the four sides of the mark pattern and the four sides of the first member 1000 are the same, and the center of the mark pattern coincides with the center 1100 of the first member.

In the present application, the clamping profile of the first member 1000 can be of different shapes, while the relative positions of the movable clamp plate and the fixed portion can be made to vary with the clamping profile of the first member 1000.

As an alternative embodiment, as shown in fig. 1 to 9, a positioning jig is provided to clamp a first member 1000 having a rectangular clamping profile.

The first member 1000 having a rectangular clamping profile is the main form of the member to be assembled which is common in the art, and in the following embodiments of the present application, the structure and use of the positioning jig of the present application are exemplified with the first member 1000 having a rectangular clamping profile.

As an alternative embodiment, the material of the first member 1000 is ADC12 die cast aluminum.

In this embodiment, the ADC12 die-cast aluminum has the characteristics of light weight and good mechanical properties, and is widely used in the bracket and other structures in the display module, but with the improvement of the assembly accuracy requirement of the display module, the manufacturing accuracy of the first member 1000 woven by using the ADC12 die-cast aluminum cannot meet the requirement. The embodiment of the application provides the positioning fixture for solving the problem of low manufacturing precision of the first member 1000 manufactured by adopting the ADC12 die-cast aluminum material, so that the first characteristic position of the first member 1000 is obtained through the positioning fixture, and the alignment assembly is performed according to the first characteristic position, thereby meeting the requirement on the assembly precision.

As an alternative embodiment, as shown in fig. 5 to 7, the positioning fixture includes a fixture fixing frame 100, a first fixing portion 110 is a first edge 130 of the fixture fixing frame 100, a second fixing portion 120 is a second edge 140 of the fixture fixing frame 100, and the first edge 130 and the second edge 140 are disposed adjacently.

In the present embodiment, as shown in fig. 1 to 3, the jig fixing frame 100 is a jig fixing frame 100 having two adjacent sides, a first side 130 and a second side 140 of the jig fixing frame 100 are disposed adjacent, wherein the first side 130 is disposed as a first fixing portion 110 to be opposed to the first clamping plate 210, and the second side 140 is disposed as a second fixing portion 120 to be opposed to the second clamping plate 220.

In this embodiment, as shown in fig. 1 and 3, the fixture fixing frame 100 is used to abut against the first member 1000 and set the alignment mark 300, that is, the fixture fixing frame 100 provides positioning and supporting functions for the first member 1000 and the alignment mark 300, respectively.

In this embodiment, as shown in fig. 1 and 3, one alignment mark 300 is disposed on each of the first edge 130, the first clamping plate 210, the second edge 140 and the second clamping plate 220, and the minimum distance between each alignment mark 300 and the surface of the first edge 130, the first clamping plate 210, the second edge 140 and the second clamping plate 220 for abutting against the first member 1000 is equal.

In this embodiment, as shown in fig. 5 to 7, the fixture fixing frame 100 includes a first edge 130 and a second edge 140 adjacent to each other, and the first edge 130 and the second edge 140 may be perpendicularly connected to each other to form a structure with a right angle. The first clamping plate 210 is disposed opposite to the first side 130, that is, a straight line where the first clamping plate 210 is located is parallel to a straight line where the first side 130 is located, and the first clamping plate 210 can move in a direction approaching and separating from the first side 130; meanwhile, the second clamping plate 220 is disposed opposite to the second side 140, that is, a straight line of the second clamping plate 220 is parallel to a straight line of the second side 140, and the second clamping plate 220 can move in a direction approaching and separating from the second side 140. By the movement of the first clamping plate 210 relative to the first side 130 and the movement of the second clamping plate 220 relative to the second side 140, the first member 1000 can be clamped in the clamping space formed by the first clamping plate 210, the second clamping plate 220, the first side 130 and the second side 140, and the four sides of the first member 1000 are respectively abutted with the first clamping plate 210, the second clamping plate 220, the first positioning plate and the second positioning plate. Since the four alignment marks 300 are disposed on the first edge 130, the first clamping plate 210, the second edge 140 and the second clamping plate 220, respectively, and the minimum distances between each alignment mark 300 and the surfaces of the first edge 130, the first clamping plate 210, the second edge 140 and the second clamping plate 220 for abutting against the first member 1000 are equal. The center position of the mark pattern determined by the four alignment marks 300 coincides with the actual center position of the first member 1000, i.e., the neutral position of the first member 1000 is determined.

Those skilled in the art will recognize that for a rectangular structure, the length and length directions, width and width directions, and a corner location, the rectangular structure and its location, and further the center of the rectangular structure, may be determined. Thus, in the positioning jig of the third embodiment, the center position of the bracket can be accurately determined by the vision assembly. After the center of the bracket is determined by the positioning clamp and the vision component, the center of the light-emitting substrate is determined by adopting the same or different methods, and the light-emitting substrate and the center of the bracket are overlapped and assembled according to the center position of the bracket and the center position of the light-emitting substrate. Further, if the assembly is completed with an angular offset, the assembly can be corrected by using the X-direction, Y-direction and angle electrodes of the vision unit, and the desired assembly accuracy can be obtained finally.

As an alternative embodiment, as shown in fig. 5-7, clip holder 100 further includes a third side 150 and a fourth side 160; the first side 130, the second side 140, the third side 150, and the fourth side 160 are connected end to end in sequence; the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340, wherein the first alignment mark 310 is disposed on the first side 130, the second alignment mark 320 is disposed on the second side 140, the third alignment mark 330 is disposed on the third side 150, and the fourth alignment mark 340 is disposed on the fourth side 160; the plurality of movable jaws further includes a third jaw 230 and a fourth jaw 240, wherein the first jaw 210 is disposed opposite the third jaw 230, and the second jaw 220 is disposed opposite the fourth jaw 240; the first clamping plate 210 is elastically connected to the third side 150, the second clamping plate 220 is elastically connected to the fourth side 160, the third clamping plate 230 is elastically connected to the first side 130, and the fourth clamping plate 240 is elastically connected to the second side 140.

In this embodiment, as shown in fig. 5 to 7, the fixture fixing frame 100 in the positioning fixture includes a first edge 130, a second edge 140, a third edge 150 and a fourth edge 160, and the first edge 130, the second edge 140, the third edge 150 and the fourth edge 160 are sequentially connected end to form the fixture fixing frame 100.

In the present embodiment, as shown in fig. 5 to 7, the plurality of alignment marks 300 includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340. The first, second, third and fourth alignment marks 310, 320, 330 and 340 are provided on the first, second, third and fourth sides 130, 140, 150 and 160, respectively, of the jig fixing frame 100, and the center position of the jig fixing frame 100 can be determined by the first, second, third and fourth alignment marks 310, 320, 330 and 340 based on the aforementioned method of determining the center position.

In the present embodiment, as shown in fig. 5 to 7, the plurality of movable jaws includes a first jaw 210, a second jaw 220, a third jaw 230, and a fourth jaw 240, the first jaw 210 being disposed opposite to the third jaw 230, the second jaw 220 being disposed opposite to the fourth jaw 240; and the first clamping plate 210 is elastically connected with the third edge 150, the second clamping plate 220 is elastically connected with the fourth edge 160, the third clamping plate 230 is elastically connected with the first edge 130, and the fourth clamping plate 240 is elastically connected with the second edge 140. The first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 are respectively elastically connected inside the clamp holder 100, so that the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 have a tendency to move toward the middle position of the clamp holder 100, thereby being capable of clamping the first member 1000, and since the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 have the same tendency to move toward the middle position of the clamp holder 100, the first member 1000 clamped by the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 is suspended in the clamp holder 100, and the center 1100 position of the first member coincides with the center position of the clamp holder 100.

As shown in fig. 5 to 7, the first clamping plate 210 and the third clamping plate 230, which move up and down in the drawing, and the second clamping plate 220 and the third clamping plate 230, which move left and right in the drawing, move by the same relative movement distance, so that the distances between each side of the first member 1000 and the first side 130, the second side 140, the third side 150 and the fourth side 160 of the clamp holder 100 are the same, the first member 1000 and the clamp holder 100 are in a relative positional relationship with the center, that is, the center 1100 of the first member is coincident with the center of the clamp holder 100. The vision system may determine the center position of the marking pattern, i.e., the center position of the fixture mount 100, by the first alignment mark 310, the second alignment mark 320, the third alignment mark 330, and the fourth alignment mark 340 on the fixture mount 100. Since the center 1100 position of the first member coincides with the center position of the jig mount 100, the center position of the marker pattern determined by visual inspection can be regarded as the center 1100 position of the first member.

As an alternative embodiment, as shown in fig. 6 and 7, the inner profile of the jig fixing frame 100 is rectangular; the first alignment mark 310, the second alignment mark 320, the third alignment mark 330 and the fourth alignment mark 340 are respectively located near four vertices of the rectangle, or the first alignment mark 310, the second alignment mark 320, the third alignment mark 330 and the fourth alignment mark 340 are respectively located near four sides of the rectangle.

In this embodiment, the inner contour of the fixture fixing frame 100 is rectangular, that is, the first side 130, the second side 140, the third side 150 and the fourth side 160 of the fixture fixing frame 100 are sequentially connected end to end, and two adjacent sides are perpendicular to each other, so as to form the rectangular fixture fixing frame 100 with a rectangular inner contour. Alternatively, as shown in fig. 6, the first alignment mark 310, the second alignment mark 320, the third alignment mark 330 and the fourth alignment mark 340 are respectively located near four vertices of the rectangular inner contour, that is, one alignment mark 300 is respectively disposed at opposite corners of the rectangular fixture frame, and the four alignment marks 300 are disposed at opposite corners of the fixture fixing frame 100 in a central symmetry manner, so that the center of the mark pattern formed by the alignment marks 300 coincides with the center of the rectangular fixture frame/rectangular inner contour. Alternatively, as shown in fig. 7, the first alignment mark 310, the second alignment mark 320, the third alignment mark 330 and the fourth alignment mark 340 are respectively located near four sides of the rectangular inner contour, that is, one alignment mark 300 is respectively provided on four sides of the rectangular fixture frame, and the four alignment marks 300 are symmetrically arranged on four sides of the fixture fixing frame 100, so that the center of the mark pattern formed by the alignment marks 300 coincides with the center of the rectangular fixture frame/rectangular inner contour.

In the present embodiment, the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 clamp the first member 1000 in the rectangular clamping space such that the center 1100 of the first member coincides with the center of the rectangular frame, i.e., such that the center 1100 of the first member coincides with the center of the marking pattern, and thus the center 1100 position of the first member can be obtained through the marking pattern.

As an alternative embodiment, as shown in fig. 8, clip frame 100 further includes a third side 150 and a fourth side 160; the first side 130, the second side 140, the third side 150, and the fourth side 160 are connected end to end in sequence; the plurality of movable jaws further includes a third jaw 230 and a fourth jaw 240, wherein the first jaw 210 is disposed opposite the third jaw 230, and the second jaw 220 is disposed opposite the fourth jaw 240; the first clamping plate 210 is elastically connected with the third edge 150, the second clamping plate 220 is elastically connected with the fourth edge 160, the third clamping plate 230 is elastically connected with the first edge 130, and the fourth clamping plate 240 is elastically connected with the second edge 140; the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340, wherein the first alignment mark 310 is disposed on the first clamping plate 210, the second alignment mark 320 is disposed on the second clamping plate 220, the third alignment mark 330 is disposed on the third clamping plate 230, and the fourth alignment mark 340 is disposed on the fourth clamping plate 240.

In the present embodiment, as shown in fig. 8, the straight lines where the inner sides of the first clamping plate 210, the second clamping plate 220, the third clamping plate 230, and the fourth clamping plate 240 are located form a rectangular inner profile in which the first member 1000 is clamped. The first alignment mark 310, the second alignment mark 320, and the third alignment mark 330 are respectively located near four sides of the inner contour of the rectangle, preferably, the distances between the first alignment mark 310, the second alignment mark 320, and the third alignment mark 330 and the inner contour of the rectangle are equal, and the fourth alignment mark 340 can form a mark pattern matched with the structure and the position of the first member 1000 through image acquisition and calculation of a vision system, namely, in the positioning fixture of the embodiment, the center position of the mark pattern is coincident with the center 1100 position of the first member, namely, the center 1100 position of the first member is indirectly determined through the first alignment mark 310, the second alignment mark 320, and the third alignment mark 330 through the fourth alignment mark 340.

As an alternative embodiment, as shown in fig. 1 to 3, the positioning jig includes a movable clamping plate assembly including a driving member and a movable clamping plate; the positioning fixture comprises a first movable clamping plate assembly and a second movable clamping plate assembly which are adjacently arranged, wherein the first movable clamping plate assembly comprises a first driving piece 211 and a first clamping plate 210, and the second movable clamping plate assembly comprises a second driving piece 221 and a second clamping plate 220; the first driving member 211 is configured to control the first clamping plate 210 to move in a direction approaching and moving away from the first fixing portion 110, and the second driving member 221 is configured to control the second clamping plate 220 to move in a direction approaching and moving away from the second fixing portion 120.

In the present embodiment, as shown in fig. 1 to 3, the first clamping plate 210 may be driven to move in a direction approaching and moving away from the first fixing portion 110 by the first driving member 211, and the second driving member 221 may drive the second clamping plate 220 to move in a direction approaching and moving away from the second fixing portion 120, thereby clamping the first member 1000 between the first clamping plate 210 and the first fixing portion 110, and between the second clamping plate 220 and the second fixing portion 120. When the first member 1000 is clamped and positioned, the first member 1000 can be placed in an included angle formed by the first fixing portion 110 and the second fixing portion 120, and the first driving piece 211 drives the first clamping plate 210 to move in a direction close to the first fixing portion 110 so that the first clamping plate 210 and the first fixing portion 110 are clamped on two opposite sides of the first member 1000, and the second driving piece 221 drives the second clamping plate 220 to move in a direction close to the second fixing portion 120 so that the second clamping plate 220 and the second fixing portion 120 are clamped on two opposite sides of the second member, so that four sides of the first member 1000 are clamped. In this embodiment, the first member 1000 can be initially positioned by the fixing portion during clamping the first member 1000 by the fixing portion and the movable clamping plate, so that the clamping operation is relatively simple, and only the movement of the first clamping plate 210 and the second clamping plate 220 needs to be controlled, the structure of the movable clamping plate assembly is relatively simple, the manufacturing cost of the positioning clamp can be reduced, and the operation process of the movable clamping plate assembly is relatively simple and feasible, so that the positioning time can be reduced.

As an alternative embodiment, as shown in fig. 1 to 3, the positioning fixture includes a fixture fixing frame 100, a first fixing portion 110 is a first edge 130 of the fixture fixing frame 100, a second fixing portion 120 is a second edge 140 of the fixture fixing frame 100, and the first edge 130 and the second edge 140 are disposed adjacently.

In the present embodiment, as shown in fig. 1 to 3, the clip fixing frame 100 is a clip fixing frame 100 having two adjacent sides, a first side 130 and a second side 140 of the clip fixing frame 100 are disposed adjacent to each other, wherein the first side 130 is disposed opposite to the first movable jaw assembly as the first fixing portion 110, and the first jaw 210 is moved in a direction approaching and separating from the first side 130 by the first driving member 211; the second side 140 is provided as the second fixing part 120 to be opposite to the second movable jaw assembly, and the second jaw 220 is moved in a direction approaching and separating from the second side 140 by the second driving part 221; finally, the first member 1000 is clamped in the clamping space formed by the first clamping plate 210, the first edge 130, the second clamping plate 220 and the second edge 140.

As an alternative embodiment, as shown in fig. 1 to 3, the inner contour of the first side 130 is parallel to the side of the first clamping plate 210 facing the first side 130, the inner contour of the second side 140 is parallel to the side of the second clamping plate 220 facing the second side 140, and the inner contour of the first side 130 is perpendicular to the inner contour of the second side 140.

In the present embodiment, as shown in fig. 1 to 3, a clamping space having a rectangular shape is formed by the inner contour of the first side 130, the inner contour of the second side 140, the side of the first clamping plate 210 facing the first side 130, and the side of the second clamping plate 220 facing the second side 140, for accommodating the first member 1000. The plurality of alignment marks 300 at least includes four alignment marks 300, and the four alignment marks 300 are disposed on the first clamping plate 210, the second clamping plate 220, the first side 130 and the second side 140, respectively. The visual inspection system can obtain a mark pattern marked by a dashed line in fig. 2 and 3 through the alignment mark 300 in the first image, and the distances between the four sides of the mark pattern and the four sides of the first member 1000 clamped in the positioning fixture are the same, that is, the center of the mark pattern coincides with the center 1100 of the first member, that is, the position of the center 1100 of the first member is determined through the positioning fixture, so as to achieve the purpose of positioning the center 1100 of the first member.

As an alternative embodiment, as shown in fig. 1 to 3, the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340, wherein the first alignment mark 310 is disposed on the first side 130, the second alignment mark 320 is disposed on the second side 140, the third alignment mark 330 is disposed on the first clamping plate 210, and the fourth alignment mark 340 is disposed on the second clamping plate 220.

In the above embodiment, as shown in fig. 1 to 3, one alignment mark 300 is disposed on each of the first edge 130, the first clamping plate 210, the second edge 140 and the second clamping plate 220, and each alignment mark 300 is equal to the minimum distance/vertical distance between the inner contour of the first edge 130, the side of the first clamping plate 210 facing the first edge 130, the inner contour of the second edge 140 and the side of the second clamping plate 220 facing the second edge 140, and the minimum distance/vertical distance between the opposite sides can be offset, so that a mark pattern corresponding to the first member 1000 can be formed by the four alignment marks 300, and the center 1100 position of the first member can be indirectly obtained by the mark pattern.

In the present application, as shown in fig. 9, one alignment mark 300 is provided on each of the first and second fixed edges, the first and second clamping plates 210 and 220, and in case that the direction of any one of the first and second edges 130 and 140, the first and second clamping plates 210 and 220 and the positions of the four alignment marks 300 are known, a unique rectangular mark pattern can be obtained through data processing, so that the four edges of the mark pattern pass through the one alignment mark 300, and the directions of the four edges of the mark pattern are the same as the directions of the first and second edges 130 and 140, the first and second clamping plates 210 and 220, respectively, even though the mark pattern can reflect the inner contour structure composed of the first and second edges 130 and 140, the first and second clamping plates 210 and 220, and the center 1100 position of the first member can be indirectly determined through the mark pattern.

Further preferably, as shown in fig. 1 and 2, the alignment mark 300 disposed on the first side 130 is disposed opposite to the alignment mark 300 disposed on the first clamping plate 210, and the alignment mark 300 disposed on the second side 140 is disposed opposite to the alignment mark 300 disposed on the second clamping plate 220.

As shown in fig. 2, when the visual inspection system acquires the mark pattern through the alignment marks 300 in the first image by the alignment marks 300 in the first side 130 and the first clamping plate 210, and the alignment marks 300 in the second side 140 and the second clamping plate 220, the visual inspection system acquires the direction of the second side 140 and the second clamping plate 220 according to the connecting line between the alignment marks 300 in the first side 130 and the first clamping plate 210, and determines the sides corresponding to the second side 140 and the second clamping plate 220 in the mark pattern by translating the connecting line to overlap with the alignment marks 300 in the second side 140 and the second clamping plate 220, respectively. In the data processing process, the data processing quantity can be reduced, the data processing speed can be improved, the marking graph can be obtained more quickly, and the center 1100 positioning efficiency of the positioning fixture on the first member can be improved.

As another alternative embodiment, as shown in fig. 4, the positioning jig includes a third movable cleat assembly disposed adjacent to the second movable cleat assembly, the third movable cleat assembly including a first stationary portion 110, a third drive member 231, and a third cleat 230; the third driving member 231 is configured to control the third clamping plate 230 to move in a direction approaching and moving away from the first clamping plate 210.

Further alternatively, as shown in fig. 4, the positioning fixture includes a fixture fixing frame 100, and the second fixing portion 120 is a side of the fixture fixing frame 100, and the side of the fixture fixing frame 100 is opposite to the second clamping plate 220.

Still further alternatively, as shown in fig. 4, a contour of a side of the clamp holder 100 facing the second clamping plate 220 is parallel to a side of the second clamping plate 220 facing the clamp holder 100, a side of the first clamping plate 210 facing the third clamping plate 230 is parallel to a side of the third clamping plate 230 facing the first clamping plate 210, a side facing the second clamping plate 220, and a side of the first clamping plate 210 facing the third clamping plate 230 are perpendicular.

In this embodiment, as shown in fig. 4, the positioning fixture includes a first movable clamping plate assembly, a second movable clamping plate assembly and a third movable clamping plate assembly, wherein the first movable clamping plate assembly includes a first driving member 211 and a first clamping plate 210, and the second movable clamping plate assembly includes a second driving member 221 and a second clamping plate 220; the third movable cleat assembly includes a third driving member 231, a third cleat 230, and a first stationary portion 110, i.e., the third movable cleat assembly is disposed on the same side as the first stationary portion 110. The first clamping plate 210 and the second clamping plate 220 are adjacently arranged, the third clamping plate 230 is opposite to the first clamping plate 210, and the straight lines of the first clamping plate 210, the second clamping plate 220 and the third clamping plate 230 and the second fixing part 120 respectively form a clamping space with rectangular inner contour, namely, the straight line of the first clamping plate 210 is parallel to the straight line of the third clamping plate 230, and the first clamping plate 210 and the third clamping plate 230 can move oppositely and move reversely; meanwhile, a straight line of the second clamping plate 220 is parallel to a straight line of the second fixing portion 120, and the second clamping plate 220 may be moved in a direction approaching and separating from the second fixing portion 120.

In the present embodiment, as shown in fig. 4, the first member 1000 can be clamped in the clamping space with rectangular inner profile formed by the first clamping plate 210, the second clamping plate 220, and the third clamping plate 230 and the second fixing portion 120 by moving the first clamping plate 210, the second clamping plate 220, and the third clamping plate 230, and four sides of the first member 1000 are respectively abutted against the first clamping plate 210, the second clamping plate 220, the third clamping plate 230, and the second fixing portion 120.

As an alternative embodiment, as shown in fig. 4, the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340, wherein the first alignment mark 310 is disposed on the first clamping plate 210, the second alignment mark 320 is disposed on the second clamping plate 220, the third alignment mark 330 is disposed on the third clamping plate 230, and the fourth alignment mark 340 is disposed on one side of the fixture fixing frame 100.

In this embodiment, as shown in fig. 4, an alignment mark 300 is respectively provided on one side of the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the clamp fixing frame 100, and after the vision component obtains the first image of the first member 1000 clamped by the alignment clamp, the vision component can obtain a mark pattern corresponding to the first member 1000 according to the position of the alignment mark 300 in the first image and the direction of the straight line of the one side of the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the clamp fixing frame 100, and further obtain the center 1100 position of the first member through the mark pattern.

In this embodiment, as shown in fig. 4, first, one side of the first member 1000 attached to the fixture fixing frame 100 may be placed in the clamping space, so that the first member 1000 is initially positioned, and then the first member 1000 is clamped in the clamping space having a rectangular inner contour by the movement of the first clamping plate 210, the second clamping plate 220 and the third clamping plate 230.

As an alternative embodiment, the positioning jig includes a fourth movable cleat assembly disposed adjacent to the third movable cleat assembly, the fourth movable cleat assembly including a second stationary portion 120, a fourth driving member 241, and a fourth cleat 240; the fourth driving part 241 is configured to control the fourth clamping plate 240 to move in a direction approaching and moving away from the third clamping plate 230.

In this embodiment, the first driving member 211, the second driving member 221, the third driving member 231 and the fourth driving member 241 can correspondingly drive the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 respectively, so that the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 are respectively clamped on the first member 1000, and the relative positions of the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 and the first member 1000 are fixed, so that the first member 1000 can be centered by the alignment marks 300 arranged on the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240.

Further alternatively, the side of the first clamping plate 210 facing the third clamping plate 230 and the side of the third clamping plate 230 facing the first clamping plate 210 are parallel, and the side of the second clamping plate 220 facing the fourth clamping plate 240 and the side of the fourth clamping plate 240 facing the second clamping plate 220 are parallel.

In the present embodiment, the positioning jig is provided to clamp the first member 1000 having a rectangular clamping profile, so that the side of the first clamping plate 210 facing the third clamping plate 230 and the side of the third clamping plate 230 facing the first clamping plate 210 are parallel, the side of the second clamping plate 220 facing the fourth clamping plate 240 and the side of the fourth clamping plate 240 facing the second clamping plate 220 are parallel, and a clamping space having a rectangular profile is formed by the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 to correspond to the clamping profile of the first member 1000.

Still further alternatively, the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, and a fourth alignment mark 340, wherein the first alignment mark 310 is disposed on the first clamping plate 210, the second alignment mark 320 is disposed on the second clamping plate 220, the third alignment mark 330 is disposed on the third clamping plate 230, and the fourth alignment mark 340 is disposed on the fourth clamping plate 240.

As an alternative embodiment, the driving member is a cylinder, an elastic member or a motor.

In the present application, the plurality of movable clamping plates may be driven by the driving member to move each clamping plate with respect to the fixed portion. The driving member may be an elastic member, an air cylinder or a motor.

As shown in fig. 5 to 8, the first clamping plate 210, the second clamping plate 220, the third clamping plate 230, and the fourth clamping plate 240 can be driven by the driving member such that the first clamping plate 210, the second clamping plate 220, the third clamping plate 230, and the fourth clamping plate 240 are respectively moved with respect to the clamp holder 100. The third driving member 231 above in the drawing drives the third clamping plate 230 to move downwards, the first driving member 211 below drives the first clamping plate 210 to move upwards, and the distance that the third clamping plate 230 and the first clamping plate 210 move towards each other is the same; meanwhile, the second driving member 221 on the left in the drawing drives the third clamping plate 230 to move rightward, the fourth driving member 241 on the right drives the fourth clamping plate 240 to move leftward, and the distances of the second clamping plate 220 and the fourth clamping plate 240 to move toward each other are the same. The movable clamping plates in four directions can clamp the first member 1000 in a clamping space with a rectangular inner contour, namely, the first member 1000 can be clamped and fixed, the first member 1000 can be stressed in the left-right up-down direction in the figure, and under the balance action of forces in all directions, the center 1100 of the first member is overlapped with the center of the clamp fixing frame 100 (the mark pattern), so that the center 1100 of the first member is overlapped with the center of the mark pattern.

As shown in fig. 5 to 8, the driving members may be elastic members, and the elastic force of each set of elastic members is the same, so that the same pushing force can be provided to the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 by the respective sets of elastic members, respectively, so that the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 are respectively moved by the same distance, thereby clamping the first member 1000 in a clamping space having a rectangular inner profile.

In other embodiments, a method of driving the movable clamping plate by an air cylinder or a motor may be adopted, and the principle thereof is the same as that of the above embodiments, and will not be described herein.

As an alternative embodiment, as shown in fig. 5, the first movable cleat assembly further includes a third securing portion, and the second movable cleat assembly further includes a fourth securing portion; the positions of the first fixing portion 110, the second fixing portion 120, the third fixing portion and the fourth fixing portion are fixed relatively.

In the present embodiment, the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 are disposed in a rectangular frame formed by the first fixing portion 110, the second fixing portion 120, the third fixing portion and the fourth fixing portion, and the first clamping plate 210, the second clamping plate 220, the third clamping plate 230 and the fourth clamping plate 240 are positioned by the first fixing portion 110, the second fixing portion 120, the third fixing portion and the fourth fixing portion, so that positioning of the alignment marks 300 on the fixing portions or the movable clamping plates is facilitated.

As an alternative embodiment, as shown in fig. 5 and 6, the positioning fixture is configured such that, when the first member 1000 is placed between the first fixing portion 110 and the first clamping plate 210 and between the second fixing portion 120 and the second clamping plate 220, the center line of each alignment mark 300 encloses a pattern that coincides with the center 1100 of the first member in the orthographic projection center of the extension surface of the first member 1000.

In this embodiment, through the structural arrangement of the positioning fixture, after the first member 1000 is clamped by the positioning fixture, the center line of each alignment mark 300 encloses a pattern to overlap with the center 1100 of the first member at the center of the orthographic projection of the extension surface of the first member 1000, so that the median position of the mark pattern can be directly determined through the center line of the alignment mark 300, i.e. the center 1100 position of the first member can be more quickly determined.

As an alternative embodiment, the plurality of marks includes a first alignment mark 310, a second alignment mark 320, a third alignment mark 330, a fourth alignment mark 340; the positioning jig is configured such that, in a state where the first member 1000 is placed between the first fixing portion 110 and the first clamping plate 210 and between the second fixing portion 120 and the second clamping plate 220, a line connecting the first alignment mark 310 and the third alignment mark 330 is parallel to a contour edge of the first fixing portion 110 facing the first member 1000, and a line connecting the second alignment mark 320 and the fourth alignment mark 340 is parallel to a contour edge of the second fixing portion 120 facing the first member 1000.

In this embodiment, when the length and length direction, width and width direction of the rectangular structure and the start position of one of the sides are known, the rectangular structure and its position can be determined, and further the center of the rectangular structure can be determined.

The connection line of the first alignment mark 310 and the third alignment mark 330 may reflect the length and length direction of the rectangular structure, the connection line of the second alignment mark 320 and the fourth alignment mark 340 may reflect the width and width direction of the rectangular structure, and in the case of the position determination of the fixing portion, the position of the center 1100 of the first member may be precisely determined through the vision assembly.

In the above-described embodiments of the present application, each alignment mark 300 may be provided on the jig fixing frame 100 and/or the movable clamping plate by an adhesive or the like.

In the embodiment shown in fig. 5, the alignment marks 300 are disposed on the fixture mount 100, and optionally, the plurality of alignment marks 300 further include a mark frame matched with the fixture mount 100, the mark frame is attached to the fixture mount 100, and the alignment marks 300 are disposed on the mark frame.

In the present application, the alignment mark 300 is disposed on the mark frame, and the mark frame is matched with the structure of the fixture fixing frame 100, so that the alignment mark 300 can be aligned and fixed at a corresponding position of the fixture fixing frame 100 by the mark frame, so as to ensure that the center of the center fixture fixing frame 100 of the mark pattern formed by the alignment mark 300 coincides with the center of the fixture fixing frame 100, and thus, the position of the alignment mark 300 on the fixture fixing frame 100 can be ensured to be accurately positioned. As an alternative embodiment, the marking frame is glass.

In the application, the marking frame is made of glass, so that the marking frame has certain hardness and transparency, the marking frame can be conveniently attached to the fixture fixing frame 100, whether the marking frame is accurately aligned and attached to the fixture fixing frame 100 or not can be accurately observed through the glass, and the dislocation between the marking frame and the fixture fixing frame 100, namely, the dislocation of the setting position of the alignment mark 300, is avoided.

In the present application, a plurality of alignment marks 300 may be formed on a predetermined carrier, for example, a glass carrier, and after cutting the glass carrier into a suitable size, the cut carriers carrying the alignment marks 300 may be attached to predetermined positions, respectively. As shown in fig. 1 to 8, the alignment marks 300 are respectively attached to the fixture fixing frame 100 and/or a preset position of the movable clamping plate.

Based on the same inventive concept, the application also provides an alignment system, which comprises the positioning fixture, the alignment fixture, the vision component and the control component.

Wherein the alignment jig is configured to clamp the second member;

the vision component is used for acquiring first image information of the first member 1000 clamped by the positioning clamp and acquiring a first characteristic position of the first member 1000 according to the alignment mark 300 in the first image information; the vision component is also used for acquiring second image information of the second component clamped by the alignment fixture and acquiring a second characteristic position of the second component according to the second image information.

The control assembly is configured to control at least one of the positioning jig and the alignment jig to translate and raise and lower to align the first member 1000 and the second member.

Because the alignment system provided by the application comprises the positioning fixture in the technical scheme, the alignment system provided by the application has all the beneficial effects of the positioning fixture and is not described herein.

In the application, the vision component can adopt the image sensor (CCD) to acquire the mark template information, thereby indirectly determining the center position of the bracket through the mark template information and avoiding the defect of lower accuracy of directly determining the center position according to the bracket graph.

In the present application, a positioning jig is used to hold the first member 1000, and an alignment jig is used to hold the second member, and the first member 1000 and the second member may be parts to be assembled in which the outer contour is rectangular in the display apparatus.

In the embodiment of the present application, the first member 1000 is one member to be assembled of the product, and the second member is another member to be assembled of the product. The first member 1000 and the second frame are assembled by a para-assembly system. Alternatively, the first member 1000 is a light emitting substrate, and the second member is a light emitting substrate. Further alternatively, the material of the first member 1000 comprises aluminum and the material of the second member comprises glass.

In the embodiment of the application, the control component is used for controlling at least one of the positioning clamp and the alignment clamp to translate and lift, that is to say, the alignment clamp and the positioning clamp can translate and lift relatively; the alignment fixture can be fixed, so that the positioning fixture moves in a three-dimensional space; or fixing the positioning clamp and moving the alignment clamp in a three-dimensional space; alternatively, both the alignment jig and the positioning jig can be moved in three-dimensional space. By relative movement of the positioning jig and the alignment jig, the first characteristic position of the first member 1000 can be aligned with the second characteristic position of the second member, thereby completing alignment of the first member 1000 with the second member.

In the embodiment of the application, after the first characteristic position of the first member 1000 and the second characteristic position of the second member are obtained through the vision system, the alignment fixture and the positioning fixture can be relatively translated, so that the first characteristic position of the first member 1000 and the second characteristic position of the second member are aligned, and if the angle deviation exists after the assembly, the X direction, the Y direction and the angle electrode of the vision assembly can be used for correction, and the desired assembly precision is finally obtained; and then the first component 1000 and the second component are assembled in an alignment way by enabling the alignment fixture and the positioning fixture to relatively lift, so that the high-precision alignment assembly of the first component 1000 and the second component is realized.

As an alternative embodiment, the alignment jig is the same as or different from the positioning jig.

In this embodiment, the positioning fixture is used for clamping the first component 1000 that is difficult to identify and position, and when the second component is easy to identify and position, the alignment fixture can be a conventional fixture, so that the manufacturing cost of the alignment system is reduced by using the existing device. When the second member is also difficult to identify and position, the alignment jig may be made identical to the positioning jig so that the first member 1000 and the second member can be centered with high accuracy, respectively.

As an alternative embodiment, the shape of the first member 1000 is rectangular; the second member is rectangular in shape;

the first feature location includes a center 1100 of the first member; the second feature location includes a center of the second member; the control assembly is arranged to control the orthographic projection of the centre of the second member onto the first member 1000 to coincide with the centre of the second member.

In the present embodiment, when the shape of the first member 1000 is rectangular and the shape of the second member is rectangular, then the first characteristic position of the first member 1000 may include, but is not limited to, the center 1100 of the first member, and the second characteristic position of the second member may include, but is not limited to, the center of the second member. If two branches of a first member 1000, which are rectangular in shape, must coincide with the centre of a second member, this means that the first member 1000 is aligned with the second member.

In this embodiment, the control unit controls the orthographic projection of the center of the second member on the first member 1000 to coincide with the center of the second member, and after further assembly, the center 1100 of the first member can coincide with the center of the second member, so as to achieve the purpose of aligning the first member 1000 with the second member.

As an alternative implementation, the alignment system is an LED lighting substrate assembly alignment system; the first component 1000 is a bracket, and the second component is an LED light-emitting substrate;

wherein the material of the first member 1000 comprises aluminum.

Along with the development of the display device, the alignment and assembly requirements on the LED luminous substrate are higher and higher, and the alignment system is applied to the assembly and alignment of the LED luminous substrate, so that the assembly and alignment precision of the LED luminous substrate can be improved.

In the assembly alignment of the LED lighting substrate of the present embodiment, the first member 1000 may be a bracket, and the material of the first member 1000 may be aluminum, specifically, may be die-cast aluminum for the ADC 12. The method is limited by the current aluminum products such as ADC12 die-cast aluminum and the like and the preparation process, the bracket prepared by adopting the aluminum products such as ADC12 die-cast aluminum and the like has poor precision, and the bracket is difficult to be directly marked and aligned. According to the application, the bracket is clamped and positioned by the positioning clamp in the alignment system, so that the first characteristic position of the bracket can be more accurately determined, and the defect of poor positioning accuracy caused by poor preparation accuracy of the bracket is avoided.

In the assembly alignment of the LED light emitting substrate of the present embodiment, the second member is the LED light emitting substrate. In the field, the LED light-emitting substrate generally adopts a glass substrate, the preparation precision of the glass substrate is higher, and the requirement of assembly precision can be met, so that the LED light-emitting substrate can be positioned through a self structure, namely, the LED light-emitting substrate can be clamped by an alignment clamp.

For example, the LED light-emitting substrate of the embodiment is an LED display panel, and may be a Mini-LED or Micro-LED display panel, for example.

For example, the LED light-emitting substrate of the present embodiment is an LED backlight panel for providing direct-type backlight for a liquid crystal display panel.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A positioning fixture configured to clamp a first member, the positioning fixture comprising:

2. The positioning fixture of claim 1 wherein the positioning fixture comprises a fixture mount, the first securing portion being a first edge of the fixture mount, the second securing portion being a second edge of the fixture mount, the first edge and the second edge being disposed adjacent.

3. The localization fixture of claim 2, wherein the fixture mount further comprises a third side and a fourth side; the first edge, the second edge, the third edge and the fourth edge are connected end to end in sequence;

4. A positioning jig as claimed in claim 3 wherein the internal profile of the jig mount is rectangular;

5. The localization fixture of claim 1, wherein the localization fixture comprises a movable clamping plate assembly comprising a drive and the movable clamping plate;

6. The positioning fixture of claim 5 wherein the positioning fixture comprises a fixture mount, the first securing portion being a first edge of the fixture mount, the second securing portion being a second edge of the fixture mount, the first edge and the second edge being disposed adjacent.

7. The positioning jig of claim 6 wherein the inner contour of the first side is parallel to the side of the first clamping plate facing the first side and the inner contour of the second side is parallel to the side of the second clamping plate facing the second side, the inner contour of the first side being perpendicular to the inner contour of the second side.

8. The positioning fixture of claim 6, wherein the plurality of marks comprises a first alignment mark, a second alignment mark, a third alignment mark, a fourth alignment mark, wherein,

9. The positioning jig of claim 5 wherein the positioning jig comprises a third movable cleat assembly disposed adjacent the second movable cleat assembly, the third movable cleat assembly comprising a first stationary portion, a third drive member, and a third cleat;

10. The positioning jig of claim 9 wherein the positioning jig comprises a jig mount, the second fixing portion being one side of the jig mount opposite the second clamping plate.

11. The positioning jig of claim 10 wherein a side of the jig mount facing the second clamp plate has a profile parallel to a side of the second clamp plate facing the jig mount, a side of the first clamp plate facing the third clamp plate is parallel to a side of the third clamp plate facing the first clamp plate, and the sides facing the second clamp plate and the first clamp plate are perpendicular.

12. The positioning fixture of claim 10, wherein the plurality of marks comprises a first alignment mark, a second alignment mark, a third alignment mark, a fourth alignment mark, wherein,

13. The positioning jig of claim 9 wherein the positioning jig comprises a fourth movable cleat assembly disposed adjacent the third movable cleat assembly, the fourth movable cleat assembly comprising a second stationary portion, a fourth drive member, and a fourth cleat;

14. The localization fixture of claim 13, wherein a side of the first clamp plate facing the third clamp plate and a side of the third clamp plate facing the first clamp plate are parallel, and a side of the second clamp plate facing the fourth clamp plate and a side of the fourth clamp plate facing the second clamp plate are parallel.

15. The positioning fixture of claim 13, wherein the plurality of marks comprises a first alignment mark, a second alignment mark, a third alignment mark, and a fourth alignment mark, wherein the first alignment mark is disposed on the first clamping plate, the second alignment mark is disposed on the second clamping plate, the third alignment mark is disposed on the third clamping plate, and the fourth alignment mark is disposed on the fourth clamping plate.

16. A positioning jig as claimed in any one of claims 5 to 15 wherein the drive member is a cylinder, an elastic member or a motor.

17. The localization fixture of any one of claims 5 to 15, wherein the first movable cleat assembly further comprises a third securing portion and the second movable cleat assembly further comprises a fourth securing portion;

18. A positioning jig as claimed in any one of claims 2 to 5 wherein the positioning jig is arranged such that with a first member placed between the first fixing portion and the first clamping plate and between the second fixing portion and the second clamping plate, the centre line of each alignment mark is patterned to coincide with the centre of the first member at the centre of orthographic projection of the first member extension plane.

19. The localization fixture of claim 18, wherein the plurality of markers comprises a first alignment marker, a second alignment marker, a third alignment marker, a fourth alignment marker;

20. A positioning jig as claimed in any one of claims 1 to 5 wherein the jig is arranged to clamp a first member having a rectangular clamping profile.

21. The localization fixture of any one of claims 1 to 5, wherein the material of the first component is ADC12 die cast aluminum.

22. An alignment system comprising a positioning fixture as claimed in any one of claims 1 to 21, an alignment fixture, a vision assembly and a control assembly;

Wherein the alignment jig is configured to clamp the second member;

23. The alignment system of claim 22, wherein the alignment fixture is the same as or different from the positioning fixture.

24. The alignment system of claim 22, wherein the first member is rectangular in shape; the second member is rectangular in shape;

25. The alignment system of any of claims 22-24, wherein the alignment system is an LED lighting substrate assembly alignment system; the first component is a bracket, and the second component is an LED luminous substrate;

wherein the material of the first member comprises aluminum.