Positioning jig

Abstract

The utility model provides a positioning jig. The positioning jig comprises a bottom plate, a driving assembly, a first positioning assembly and a second positioning assembly. The first positioning assembly is configured to move in the first direction of the bottom plate under the action of the first driving piece, and the second positioning assembly is configured to move in the second direction of the bottom plate under the action of the first driving piece. By arranging the first positioning assembly and the second positioning assembly, the workpiece can move in the first direction and the second direction, and therefore centering positioning of workpieces of different sizes can be achieved. The positioning jig can be applied to workpieces with various length-width ratios, and generalization and standardization of the jig are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jigs, in particular to a positioning jig. BACKGROUND

[0002] A jig is a tool used to assist in controlling position and / or action, which is widely used in the field of workpiece assembly and the like. The existing positioning jig can generally only position one or two sizes of workpieces, and cannot be compatible with workpieces of different sizes, so the application range is limited. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a positioning jig capable of positioning workpieces of multiple different sizes.

[0004] A positioning jig comprises a bottom plate, a driving assembly, a first positioning assembly and a second positioning assembly. The driving assembly is arranged on the bottom plate, and the driving assembly comprises a first driving member and a connecting plate connected with the first driving member. The connecting plate is configured to move along a first direction of the bottom plate under the action of the first driving member. Two first positioning assemblies are arranged opposite to each other along a second direction of the bottom plate, the second direction is perpendicular to the first direction, and both the first direction and the second direction are perpendicular to the thickness direction of the bottom plate. Each first positioning assembly comprises a connecting rod, a first mounting plate and a first positioning block. One end of the connecting rod is rotationally connected to the connecting plate, and one end of the connecting rod away from the connecting plate is rotationally connected to the first mounting plate. The first positioning block is fixed to one end of the first mounting plate away from the connecting rod, and the first positioning block is configured to move along the second direction. The second positioning assembly comprises a second mounting plate and a second positioning block connected with the second mounting plate. The second mounting plate is fixed to one end of the connecting plate away from the connecting rod, and the second positioning block is configured to move along the first direction.

[0005] In an embodiment, the first driving member comprises a first body, a first rod body, a first elastic member, a first mounting block and a second mounting block. The first body is fixed to the bottom plate through the first mounting block, the connecting plate passes through the first mounting block, and the first rod body extends from the first body and into the second mounting block. The first rod body is configured to move along the first direction relative to the first body, the first elastic member is sleeved on the first rod body, one end of the first elastic member is connected with the second mounting block, and the second mounting block is fixed to the connecting plate.

[0006] In one embodiment, the second positioning assembly further comprises a second elastic member and an extension rod. The second elastic member is sleeved on the extension rod, and two ends of the extension rod are fixed to the second mounting plate and the second positioning block, respectively. The elastic force of the second elastic member is smaller than the elastic force of the first elastic member.

[0007] In one embodiment, the positioning jig further comprises a third positioning assembly. The third positioning assembly is located at one end of the bottom plate along the first direction, and the second positioning assembly is located at the other end of the bottom plate along the first direction. The third positioning assembly comprises a third mounting plate, a second driving member, and a third positioning block. The third mounting plate is fixed to the bottom plate. The second driving member is arranged on the third mounting plate. The third positioning block is connected to the second driving member. The third positioning block is configured to move along the thickness direction of the bottom plate under the action of the second driving member.

[0008] In one embodiment, the second driving member comprises a second body and a second rod extending from the second body. The second rod is configured to move along the thickness direction relative to the second body. The second body is fixed to the third mounting plate. The third positioning assembly further comprises a sliding block and a sliding rail. The sliding block is fixed to one end of the second rod away from the second body. The third positioning block is fixed to the surface of the sliding block facing the bottom plate. The sliding rail is fixed to the third mounting plate. The sliding block is configured to move in the sliding rail.

[0009] In one embodiment, the positioning jig further comprises a fourth positioning assembly. The fourth positioning assembly is located close to the third positioning assembly. The fourth positioning assembly comprises a fourth mounting plate and a fourth positioning block fixed to the fourth mounting plate. The fourth mounting plate is fixed to the bottom plate. The surface of the third positioning block away from the third mounting plate is closer to the middle of the bottom plate along the first direction than the surface of the fourth positioning block away from the fourth mounting plate.

[0010] In one embodiment, the first mounting plate comprises a first plate and a second plate perpendicular to each other. At least part of the first plate is not covered by the bottom plate. The second plate is formed by extending from the end of the first plate not covered by the bottom plate along the thickness direction of the bottom plate. The first positioning assembly further comprises a sliding rail and a sliding block. The sliding rail is fixed to the bottom plate. The sliding block is fixed to the first plate. The sliding block is configured to move on the sliding rail.

[0011] In one embodiment, the driving assembly further comprises a sliding rail and a sliding block. The sliding rail is fixed to the bottom plate. The sliding block is fixed to the surface of the connecting plate facing the bottom plate. The sliding block is configured to move on the sliding rail.

[0012] In one embodiment, the positioning fixture further includes a support plate. The support plate is located on the surface of the base plate opposite to the drive assembly, and the support plate is provided with a suction cup and a sensor.

[0013] In one embodiment, a mounting post is provided on the surface of the base plate opposite to the support plate. A fifth mounting plate is provided at the end of the mounting post away from the base plate, and the fifth mounting plate has multiple connecting holes.

[0014] The positioning fixture of this application, by setting a first positioning component and a second positioning component, can realize the movement of the workpiece in two directions, a first direction and a second direction, thereby enabling the centering positioning of workpieces of different sizes. This positioning fixture can be applied to workpieces with various aspect ratios, achieving the universality and standardization of the fixture. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the positioning fixture provided in one embodiment of this application.

[0016] Figure 2 for Figure 1 A schematic diagram of the positioning fixture shown from another perspective.

[0017] Figure 3 for Figure 1 An exploded view of the positioning fixture structure shown.

[0018] Explanation of main component symbols

[0019] 100: Positioning fixture; 10: Base plate; 20: Drive assembly; 30: First positioning assembly; 40: Second positioning assembly; 50: Third positioning assembly; 60: Fourth positioning assembly; 70: Bearing plate; 11: First surface; 12: Second surface; 13: Mounting post; 14: Fifth mounting plate; 140: Connecting hole; 21: First drive component; 22: Connecting plate; 23, 34: Slide rail; 24, 35: Slider; 211: First body; 212: First rod; 213: First elastic element; 214: First mounting block; 215: Second mounting block; 216: Groove; 31: Linkage; 32: First mounting plate; 33: First positioning block; 321: First plate; 322: Second plate; 41: Second mounting plate; 42: Second positioning block; 43: Second elastic element; 44: Extension rod; 51: Third mounting plate; 52: Second driving element; 53: Third positioning block; 511: Third plate; 512: Fourth plate; 513: First part; 515: Second part; 521: Second body; 522: Second rod body; 61: Fourth mounting plate; 62: Fourth positioning block; 71: Suction cup; 72: Sensor; X: First direction; Y: Second direction; Z: Thickness direction.

[0020] The following detailed description will further explain the embodiments of the present application with reference to the above mentioned drawings. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the application belong. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0022] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., are merely used for convenience of description and are not intended to limit the application to a particular orientation.

[0023] It will be understood that when a layer is referred to as being "on" another layer, it can be directly on the other layer or intervening layers can also be present. In contrast, when a layer is referred to as being "directly on" another layer, there are no intervening layers present. When an element is referred to as being "fixed", "attached", "connected" or "engaged" to another element, it can be directly on the other element or intervening elements can also be present. As used herein, the term "and / or" includes all combinations of one or more of the associated listed items.

[0024] It will be understood that, when describing two components as being arranged parallel / vertical, the included angle between the two components is allowed to have a tolerance of ±10% relative to the standard parallel / vertical.

[0025] For the convenience of distinguishing and management, the workpieces in the factory can be divided into multiple part numbers, such as A part number, C part number, D part number, etc. Each part number can be further divided into various versions, such as a 13-inch version and a 15-inch version. Different versions of different part numbers have different sizes, as shown in Table 1. The workpiece of the A part number 13-inch version has a length of 300 mm, a width of 220 mm, and an aspect ratio of 1.364; the workpiece of the A part number 15-inch version has a length of 329 mm, a width of 240 mm, and an aspect ratio of 1.371. The workpiece of the C part number 13-inch version has a length of 300 mm, a width of 220 mm, and an aspect ratio of 1.364; the workpiece of the C part number 15-inch version has a length of 329 mm, a width of 238 mm, and an aspect ratio of 1.382. The workpiece of the D part number 13-inch version has a length of 300 mm, a width of 216 mm, and an aspect ratio of 1.389; the workpiece of the D part number 15-inch version has a length of 326 mm, a width of 235 mm, and an aspect ratio of 1.387.

[0026] Table 1

[0027]

[0028] It can be seen that the existing workpieces have various sizes, and the existing positioning jigs cannot be used for the above workpieces. Therefore, the positioning jig is provided to realize the universality of various sizes of workpieces.

[0029] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] Please refer to Figures 1 to 3 The positioning jig 100 provided by the present application comprises a base plate 10, a driving assembly 20, a first positioning assembly 30 and a second positioning assembly 40. The base plate 10 is generally rectangular in shape, and has a first surface 11 and a second surface 12 oppositely arranged along the thickness direction Z thereof. A workpiece (not shown in the figure) can be placed on the first surface 11 of the base plate 10, and the driving assembly 20 is arranged on the second surface 12 of the base plate 10.

[0031] As shown in Figure 2 , the driving assembly 20 comprises a first driving member 21 and a connecting plate 22 connected with the first driving member 21. The connecting plate 22 is generally long strip-shaped, and is arranged on the second surface 12 of the base plate 10 and extends along the first direction X of the base plate 10. One end of the connecting plate 22 along the first direction X is covered by the base plate 10, and this end is connected with the first positioning assembly 30; the other end beyond the end of the base plate 10 is connected with the second positioning assembly 40. The connecting plate 22 can move relative to the base plate 10 along the first direction X under the action of the first driving member 21. The first direction X is perpendicular to the thickness direction Z of the base plate 10, and the first direction X can be the length direction of the base plate 10 or the width direction of the base plate 10.

[0032] As shown in Figure 1 and Figure 2 , two first positioning assemblies 30 are oppositely arranged along the second direction Y of the base plate 10. The two first positioning assemblies 30 are the same in structure and are symmetrically arranged along the first direction X. Among them, the second direction Y is perpendicular to the first direction X, and both the first direction X and the second direction Y are perpendicular to the thickness direction Z. When the first direction X is the length direction of the base plate 10, the second direction Y is the width direction of the base plate 10; when the first direction X is the width direction of the base plate 10, the second direction Y is the length direction of the base plate 10.

[0033] As shown in Figure 2 and Figure 3As shown, each first positioning assembly 30 includes a link 31, a first mounting plate 32 and a first positioning block 33. The link 31 is rotatably connected to one end of the connecting plate 22 covered by the bottom plate 10, and has a certain angle (acute angle or right angle) with the connecting plate 22. The link 31 is generally a long strip-shaped plate structure, which has a certain angle (acute angle) with the second direction Y or is parallel to the second direction Y. The first mounting plate 32 is rotatably connected to one end of the link 31 away from the connecting plate 22, and the link 31 can rotate relative to the connecting plate 22 and the first mounting plate 32. The first mounting plate 32 has a part covered by the bottom plate 10 and a part not covered by the bottom plate 10 and extending along the direction from the second surface 12 to the first surface 11, and the extending part can be higher than the first surface 11. The first positioning block 33 is fixed to the extending part, that is, fixed to one end of the first mounting plate 32 away from the link 31.

[0034] After the first driving member 21 is started, the connecting plate 22 is driven to move along the first direction X, so as to drive the link 31 on the connecting plate 22 to rotate. The rotation of the link 31 drives the first mounting plate 32 to move along the second direction Y, and in turn drives the first positioning block 33 to move along the second direction Y. In this way, the two first positioning blocks 33 oppositely arranged along the second direction Y can push the workpiece (which can have any size) on the bottom plate 10 to move along the second direction Y until the workpiece is at the middle position of the second direction Y on the bottom plate 10.

[0035] As shown in Figure 2 and Figure 3 , the second positioning assembly 40 includes a second mounting plate 41 and a second positioning block 42 connected to the second mounting plate 41. The second mounting plate 41 is fixed to one end of the connecting plate 22 away from the link 31 (the end part is not covered by the bottom plate 10), and is fixed to the surface of the second mounting plate 41 facing the bottom plate 10. The second mounting plate 41 extends along the direction from the second surface 12 to the first surface 11, and the second positioning block 42 is connected to the end of the second mounting plate 41 away from the connecting plate 22. One or more second positioning blocks 42 can be arranged on the second mounting plate 41, which is not limited in the present application.

[0036] After the first driving member 21 is started, the connecting plate 22 is driven to move along the first direction X, so as to drive the second mounting plate 41 on the connecting plate 22 to move along the first direction X, and in turn drive the second positioning block 42 on the second mounting plate 41 to move along the first direction X. The second positioning block 42 can push the workpiece (which can have any size) on the bottom plate 10 to move along the first direction X, so that the workpiece is at the middle position of the first direction X on the bottom plate 10, and finally the workpiece is at the central position on the bottom plate 10.

[0037] In some embodiments, as shown in Figure 2 and Figure 3As shown, the first driving member 21 can include a first body 211, a first rod 212, a first elastic member 213, a first mounting block 214 and a second mounting block 215. The first body 211 can be fixed to the second surface 12 of the bottom plate 10 through the first mounting block 214, the first mounting block 214 is recessed to form a groove 216 towards the direction close to the first body 211 towards the surface part of the bottom plate 10, and the connecting plate 22 passes out of the groove 216. The first rod 212 extends out of the first body 211 and extends into the second mounting block 215, and the first rod 212 can move relative to the first body 211 along the first direction X. The first elastic member 213 is sleeved on the outer circumferential surface of the first rod 212, and one end of the first elastic member 213 is connected with the second mounting block 215. The second mounting block 215 is fixed to the surface of the connecting plate 22 away from the bottom plate 10. The first driving member 21 can be but not limited to a pneumatic cylinder, and the first rod 212 can be a piston rod. The first elastic member 213 can be but not limited to a spring.

[0038] In some embodiments, as shown in Figure 3 The driving assembly 20 further includes a slide rail 23 and a slide block 24. The slide rail 23 can be fixed to the second surface 12 of the bottom plate 10, and the slide rail 23 can extend along the first direction X. The slide block 24 is fixed to the surface of the connecting plate 22 towards the bottom plate 10, and the number of the slide block 24 can be one or more. The slide block 24 can move on the slide rail 23, and through the cooperation of the slide block 24 and the slide rail 23, it can ensure that the connecting plate 22 moves linearly along the first direction X, and can also reduce the friction coefficient of the movement of the connecting plate 22, so that the movement is more smooth and smooth.

[0039] In some embodiments, as shown in Figure 2 and Figure 3 The cross section of the first mounting plate 32 is approximately "L" type, which includes a first plate 321 and a second plate 322 perpendicular to each other. Part of the first plate 321 is not covered by the bottom plate 10, and the second plate 322 can be extended along the thickness direction Z (from the second surface 12 to the first surface 11) of the bottom plate 10 from the end of the first plate 321 not covered by the bottom plate 10. Further, the first positioning assembly 30 can further include a slide rail 34 and a slide block 35. The slide rail 34 is fixed to the second surface 12 of the bottom plate 10, and the slide rail 34 can extend along the second direction Y. The slide block 35 is fixed to the surface of the first plate 321 towards the bottom plate 10, and the number of the slide block 35 can be one or more. The slide block 35 can move on the slide rail 34, and through the cooperation of the slide block 35 and the slide rail 34, it can ensure that the first mounting plate 32 moves linearly along the second direction Y, and can also reduce the friction coefficient of the movement of the first mounting plate 32 (the first plate 321), so that the movement is more smooth and smooth.

[0040] In some embodiments, as shown in Figure 2 and Figure 3As shown, the second positioning assembly 40 further comprises a second elastic member 43 and an extension rod 44. The second elastic member 43 is sleeved on the outer circumferential surface of the extension rod 44, and the two ends of the extension rod 44 are fixed to the second mounting plate 41 and the second positioning block 42 respectively. The second elastic member 43 can be, but is not limited to, a spring, and the elastic force of the second elastic member 43 is smaller than that of the first elastic member 213. It can be understood that, when the first rod body 212 of the first driving member 21 extends by 1 mm, the distance by which the first positioning block 33 moves along the first direction X is constantly changing due to the influence of the angle between the connecting rod 31 and the connecting plate 22. After the workpiece is centrally positioned along the second direction Y, there can be a gap between the second positioning block 42 and the workpiece along the first direction X, and therefore the present application designs the second elastic member 43 with a weaker elastic force than the first elastic member 213 for side pushing positioning along the first direction X. In this way, the extension and retraction range of the second positioning block 42 along the first direction X can be increased without affecting the central positioning along the second direction Y, that is, the degree of freedom along the first direction X is improved, so that the positioning jig 100 can adapt to more workpieces with different aspect ratios.

[0041] In some embodiments, as shown in Figures 1 to 3 The positioning jig 100 further comprises a third positioning assembly 50. The third positioning assembly 50 is located at the two ends of the bottom plate 10 along the first direction X, respectively, and in the present embodiment, two third positioning assemblies 50 are arranged at intervals along the second direction Y. As shown in Figure 3 Each third positioning assembly 50 comprises a third mounting plate 51, a second driving member 52 and a third positioning block 53. The third mounting plate 51 is fixed to the second surface 12 of the bottom plate 10, the second driving member 52 is arranged on the third mounting plate 51, and the third positioning block 53 is connected to the second driving member 52. The third positioning block 53 can move along the thickness direction Z under the action of the second driving member 52, and when needed, the third positioning block 53 can be moved (upward) to the side opposite to the second positioning assembly 40 to push the workpiece, which is suitable for precise positioning of workpieces of specific sizes.

[0042] Further, as shown in Figure 2 and Figure 3 The third mounting plate 51 can comprise a third plate 511 and a fourth plate 512. The third plate 511 can further comprise a first portion 513 and a second portion 515 perpendicular to each other, the first portion 513 is fixed to the second surface 12 of the bottom plate 10, and the fourth plate 512 is fixed to the second portion 515 and is substantially perpendicular to the second portion 515. The second driving member 52 can comprise a second body 521 and a second rod body 522 extending from the second body 521, the second body 521 is fixed to the fourth plate 512 of the third mounting plate 51, and the second rod body 522 can move along the thickness direction Z relative to the second body 521. The second driving member 52 can be, but is not limited to, a pneumatic cylinder, and the second rod body 522 can be, but is not limited to, a piston rod.

[0043] Further, the third positioning assembly 50 can further include a sliding block (not shown) and a sliding rail (not shown). The sliding block is fixed to the end of the second rod 522 away from the second body 521, and the third positioning block 53 is fixed to the surface of the sliding block facing the bottom plate 10. The sliding rail is fixed to the fourth plate 512 of the third mounting plate 51, and the sliding block can move in the sliding rail. Through the cooperation of the sliding block and the sliding rail, it can ensure that the third positioning block 53 moves linearly in the thickness direction Z, and also can reduce the friction coefficient, so that the movement is more smooth and smooth.

[0044] In some embodiments, as shown in Figure 1 and Figure 2 , the positioning jig 100 further includes a fourth positioning assembly 60. The fourth positioning assembly 60 is also arranged on the bottom plate 10 on the side opposite to the second positioning assembly 40 along the first direction X, and is arranged close to the third positioning assembly 50 along the second direction Y. In this embodiment, the fourth positioning assembly 60 has two, and the two fourth positioning assemblies 60 are arranged at intervals along the second direction Y, and the two third positioning assemblies 50 are located between the two fourth positioning assemblies 60.

[0045] Further, as shown in Figure 3 , the fourth positioning assembly 60 can include a fourth mounting plate 61 and a fourth positioning block 62 fixed to the fourth mounting plate 61. The fourth mounting plate 61 is generally a rectangular plate structure, which is fixed to the first surface 11 of the bottom plate 10. The fourth positioning block 62 is located on the surface of the fourth mounting plate 61 facing the second positioning assembly 40, and is located at the end away from the bottom plate 10. The third positioning block 53 can be used for positioning the 13-inch workpiece in the first direction X, and the fourth positioning block 62 can be used for positioning the 15-inch workpiece in the first direction X. When the workpiece is 13 inches, the third positioning block 53 can be extended to position the workpiece.

[0046] As shown in Figure 1 and Figure 3 , compared with the surface of the fourth positioning block 62 away from the fourth mounting plate 61, the surface of the third positioning block 53 away from the third mounting plate 51 is closer to the middle of the bottom plate 10 along the first direction X. That is, the surface of the third positioning block 53 away from the third mounting plate 51 and the surface of the fourth positioning block 62 away from the fourth mounting plate 61 are not on the same horizontal plane in the second direction Y, but are staggered, and the surface of the third positioning block 53 away from the third mounting plate 51 is closer to the inside. In this way, it is beneficial to ensure that the middle positions (which may have LOGO) of workpieces of different sizes (for example, 13-inch workpieces and 15-inch workpieces) can coincide.

[0047] In some embodiments, as shown in Figure 1As shown, the positioning fixture 100 further comprises a bearing plate 70. The bearing plate 70 is generally a rectangular plate structure, and its area is smaller than that of the bottom plate 10. The bearing plate 70 can be fixed to the first surface 11 of the bottom plate 10 (i.e. the surface of the bottom plate 10 facing away from the driving assembly 20), and the workpiece can be placed on the surface of the bearing plate 70 facing away from the bottom plate 10. The bearing plate 70 can be provided with a suction cup 71 and a sensor 72. The suction cup 71 can generate suction force on the workpiece to stabilize the positioned workpiece and prevent it from falling. After the workpiece is placed on the bearing plate 70, the sensor 72 can sense the workpiece and start the subsequent positioning operation.

[0048] As shown in some embodiments, Figure 1 and Figure 2 As shown, the second surface 12 of the bottom plate 10 (i.e. the surface of the bottom plate 10 facing away from the bearing plate 70) is provided with a plurality of mounting columns 13 (for example, one mounting column 13 can be provided on each corner of the bottom plate 10). The end of the mounting column 13 away from the bottom plate 10 is provided with a fifth mounting plate 14, and the fifth mounting plate 14 is provided with a plurality of connecting holes 140, which can be but are not limited to threaded holes. The mounting column 13 and the fifth mounting plate 14 can be used to mount the positioning fixture 100 to other equipment (such as a linear belt lifting machine table, etc.), improving the flexibility of the application of the positioning fixture 100.

[0049] The positioning fixture 100 of the embodiments of the present application can realize the movement of the workpiece in the first direction X and the second direction Y by providing the first positioning assembly 30 and the second positioning assembly 40, thereby realizing the centering positioning of workpieces of different sizes. The positioning fixture 100 of the embodiments of the present application can be applied to workpieces of various aspect ratios, realizing the generalization and standardization of the fixture.

[0050] The above description is some specific embodiments of the present application, but in actual application process, it cannot be limited to these embodiments. Other modifications and changes made by those skilled in the art according to the technical concept of the present application should be within the scope of protection of the present application.

Claims

1. A positioning jig characterized by, The positioning jig comprises: a bottom plate; a driving assembly arranged on the bottom plate, the driving assembly comprising a first driving member and a connecting plate connected with the first driving member, the connecting plate being configured to move along a first direction of the bottom plate under the action of the first driving member; two first positioning assemblies oppositely arranged along a second direction of the bottom plate, the second direction being perpendicular to the first direction, and the first direction and the second direction both being perpendicular to a thickness direction of the bottom plate, each first positioning assembly comprising a connecting rod, a first mounting plate and a first positioning block, one end of the connecting rod being rotationally connected to the connecting plate, the first mounting plate being rotationally connected to an end of the connecting rod away from the connecting plate, the first positioning block being fixed to an end of the first mounting plate away from the connecting rod, the first positioning block being configured to move along the second direction; and a second positioning assembly comprising a second mounting plate and a second positioning block connected with the second mounting plate, the second mounting plate being fixed to an end of the connecting plate away from the connecting rod, the second positioning block being configured to move along the first direction.

2. The positioning fixture of claim 1, wherein The first driving member comprises a first body, a first rod, a first elastic member, a first mounting block and a second mounting block, the first body being fixed to the bottom plate through the first mounting block, the connecting plate passing out of the first mounting block, the first rod extending out of the first body and into the second mounting block, the first rod being configured to move along the first direction relative to the first body, the first elastic member being sleeved on the first rod, one end of the first elastic member being connected with the second mounting block, and the second mounting block being fixed to the connecting plate.

3. The positioning fixture of claim 2, wherein The second positioning assembly further comprises a second elastic member and an extension rod, the second elastic member being sleeved on the extension rod, two ends of the extension rod being respectively fixed to the second mounting plate and the second positioning block, and the elastic force of the second elastic member being smaller than the elastic force of the first elastic member.

4. The positioning fixture of claim 1, wherein The positioning jig further comprises a third positioning assembly, the third positioning assembly being respectively located at two ends of the bottom plate along the first direction, the third positioning assembly comprising a third mounting plate, a second driving member and a third positioning block, the third mounting plate being fixed to the bottom plate, the second driving member being arranged on the third mounting plate, the third positioning block being connected with the second driving member, and the third positioning block being configured to move along the thickness direction of the bottom plate under the action of the second driving member.

5. The positioning fixture of claim 4, wherein The second driving member comprises a second body and a second rod extending out of the second body, the second rod being configured to move along the thickness direction relative to the second body, and the second body being fixed to the third mounting plate; the third positioning assembly further comprises a sliding block and a sliding rail, the sliding block being fixed to one end of the second rod away from the second body, the third positioning block being fixed to a surface of the sliding block facing the bottom plate, and the sliding rail being fixed to the third mounting plate, the sliding block being configured to move in the sliding rail.

6. The positioning fixture of claim 4, wherein The positioning jig further comprises a fourth positioning assembly, the fourth positioning assembly is close to the third positioning assembly, the fourth positioning assembly comprises a fourth mounting plate and a fourth positioning block fixed to the fourth mounting plate, and the fourth mounting plate is fixed to the bottom plate; compared with a surface of the fourth positioning block away from the fourth mounting plate, a surface of the third positioning block away from the third mounting plate is closer to a middle part of the bottom plate along the first direction.

7. The positioning fixture of claim 1, wherein The first mounting plate comprises a first plate and a second plate perpendicular to each other, at least part of the first plate is not covered by the bottom plate, and the second plate is formed by extending an end of the first plate which is not covered by the bottom plate along a thickness direction of the bottom plate; the first positioning assembly further comprises a sliding rail and a sliding block, the sliding rail is fixed to the bottom plate, and the sliding block is fixed to the first plate and configured to be movable on the sliding rail.

8. The positioning fixture of claim 1, wherein The driving assembly further comprises a sliding rail and a sliding block, the sliding rail is fixed to the bottom plate, and the sliding block is fixed to a surface of the connecting plate away from the bottom plate and configured to be movable on the sliding rail.

9. The positioning fixture of claim 1, wherein The positioning jig further comprises a bearing plate, the bearing plate is located on a surface of the bottom plate away from the driving assembly, and the bearing plate is provided with a suction cup and an inductor.

10. The positioning fixture of claim 9, wherein A surface of the bottom plate away from the bearing plate is provided with a mounting column, an end of the mounting column away from the bottom plate is provided with a fifth mounting plate, and the fifth mounting plate is provided with a plurality of connecting holes.

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