Positioning device

Abstract

The utility model discloses a positioning device which comprises a first positioning mechanism, a first side positioning assembly, a second side positioning assembly and a supporting seat provided with a profiling face. The first side positioning assembly and the second side positioning assembly are arranged on the two adjacent sides of the profiling face correspondingly so as to be used for being connected with the two adjacent side edges of a first workpiece placed on the profiling face in a positioning and abutting mode. The first positioning mechanism comprises a first driving assembly and a first positioning piece; the first driving assembly is used for driving the first positioning piece to be inserted into a first positioning hole of a second workpiece stacked on the first workpiece so as to position and align the first workpiece and the second workpiece. According to the positioning device, the assembly precision between the first workpiece and the second workpiece is guaranteed.

Description

A positioning device Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a positioning device. Background Technology

[0002] When assembling two non-planar workpieces, it is necessary to ensure the bonding strength and installation accuracy between them. First, the two non-planar workpieces need to be tightly attached together, and then glue or similar adhesives are used to bond them together. For example, the roof wing assembly of a vehicle includes a roof wing bracket and a roof wing glass. The roof wing glass is usually glued and installed on the roof wing bracket. The roof wing assembly and the side wings are assembled to form the gull-wing doors of the vehicle. Since the roof wing assembly and the side wings need to have a good fit, as well as ensure the installation accuracy and bonding strength between them, it is necessary to ensure the bonding strength and installation accuracy of the roof wing assembly.

[0003] In existing technologies, the roof wing glass is typically bonded to the roof wing bracket manually. However, this manual assembly method suffers from low efficiency and unstable bonding. With the continuous advancement of automation technology, some automakers have adopted clamping devices. These devices press the roof wing glass firmly onto the bracket, ensuring the bonding strength. However, while clamping devices guarantee the bonding strength, they cannot guarantee the assembly precision between the roof wing bracket and the roof wing glass. Summary of the Invention

[0004] This utility model provides a positioning device to solve the technical problem of low assembly accuracy between the top wing glass and the top wing support in the prior art.

[0005] An embodiment of the present invention provides a positioning device, including a first positioning mechanism, a first side positioning component, a second side positioning component, and a support base with a contoured surface; the first side positioning component and the second side positioning component are respectively disposed on adjacent sides of the contoured surface for positioning and abutting with adjacent side edges of a first workpiece placed on the contoured surface.

[0006] The first positioning mechanism includes a first driving component and a first positioning element; the first driving component is used to drive the first positioning element to be inserted into a first positioning hole of a second workpiece stacked on a first workpiece, so as to position and align the first workpiece and the second workpiece.

[0007] Optionally, the first positioning mechanism further includes a first support plate; the first driving assembly includes a first positioning support, a first lifting drive, a first guide rail mounted on the first positioning support, and a first slider slidably mounted on the first guide rail; the first positioning member is mounted on the first support plate, and the first support plate is mounted on the first slider; the first lifting drive is mounted on the first positioning support and connected to the first slider and / or the first support plate.

[0008] Optionally, the positioning device further includes a second positioning mechanism, wherein the first positioning mechanism and the second positioning mechanism are respectively located on opposite sides of the support base;

[0009] The second positioning mechanism includes a second driving component and a second positioning element; the second driving component is used to drive the second positioning element to be inserted into the second positioning hole of the second workpiece.

[0010] Optionally, the second positioning mechanism further includes a second support plate; the second driving assembly includes a second positioning support, a second lifting drive, a second guide rail mounted on the second positioning support, and a second slider slidably mounted on the second guide rail; the second positioning member is mounted on the second support plate, and the second support plate is mounted on the second slider; the second lifting drive is mounted on the second positioning support and connects the second slider and / or the second support plate.

[0011] Optionally, the first positioning member and the first positioning hole are clearance fit, and the first positioning member inserted into the first positioning hole is used to position the second workpiece along the second direction;

[0012] The second positioning member and the second positioning hole are interference fit. The second positioning member inserted into the second positioning hole is used to position the second workpiece along the first direction and the second direction; wherein, the first direction is perpendicular to the second direction.

[0013] Optionally, the first positioning hole is an oblong hole, and the first positioning element is an oblong pin adapted to the oblong hole; the second positioning hole is a round hole, and the second positioning element is a round pin adapted to the round hole.

[0014] Optionally, the positioning device further includes a first pressing mechanism and a second pressing mechanism, which are located on opposite sides of the support base and are both used to press the second workpiece onto the first workpiece.

[0015] Optionally, the first clamping mechanism includes a first clamping seat, a first clamping drive member, and a first clamping block rotatably mounted on the first clamping seat; the first clamping drive member is mounted on the first clamping seat and connected to the first clamping block; the first clamping drive member is used to drive the first clamping block to rotate, so that the first clamping block clamps or releases the first workpiece and the second workpiece;

[0016] The second clamping mechanism includes a second clamping seat, a second clamping drive member, and a second clamping block rotatably mounted on the second clamping seat; the second clamping drive member is mounted on the second clamping seat and connected to the second clamping block; the second clamping drive member is used to drive the second clamping block to rotate, so that the second clamping block clamps or releases the first workpiece and the second workpiece.

[0017] Optionally, the positioning device further includes a base plate, on which the support base, the first drive assembly, the first pressing mechanism, and the second pressing mechanism are all mounted.

[0018] Optionally, the first side positioning component includes a first fastener and a first positioning block with a first connecting hole. The support base is provided with a second connecting hole. The first fastener is inserted into the first connecting hole and the second connecting hole. The first positioning block is used to position the first workpiece on the contour surface along a first direction.

[0019] The second side positioning component includes a second fastener and a second positioning block having a third connecting hole. The support base has a fourth connecting hole. The second fastener is inserted into the third connecting hole and the fourth connecting hole. The second positioning block is used to position the first workpiece on the contour surface along a second direction perpendicular to the first direction.

[0020] The positioning device provided in this embodiment of the utility model has a first workpiece placed on the contoured surface of a support base, with its adjacent two sides abutting against a first side positioning component and a second side positioning component, respectively. The first side positioning component positions the first workpiece on the contoured surface from a first direction, and the second side positioning component positions the first workpiece on the contoured surface from a second direction; wherein the first direction is perpendicular to the second direction. A first driving component drives a first positioning member downwards until it is inserted into a first positioning hole in the second workpiece. Since the first workpiece is positioned on the contoured surface, and the first positioning member positions the second workpiece, the first and second workpieces are aligned and positioned together. When the first workpiece is a top wing glass and the second workpiece is a top wing support, the first and second side positioning components can position the side wing glass on the contoured surface from the first and second directions, respectively. The first positioning member inserted into the first positioning hole ensures the assembly accuracy between the top wing support and the top wing glass. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a schematic diagram of the positioning device provided in an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of the positioning device in the open state according to an embodiment of the present invention;

[0024] Figure 3 is a magnified view of part A in Figure 2;

[0025] Figure 4 is a magnified view of part B in Figure 2;

[0026] Figure 5 is a structural schematic diagram of the positioning device provided in an embodiment of the present invention in a clamping state;

[0027] Figure 6 is a magnified view of part C in Figure 5;

[0028] Figure 7 is a magnified view of part D in Figure 5;

[0029] Figure 8 is a structural schematic diagram of the first positioning mechanism of the positioning device provided in an embodiment of the present invention;

[0030] Figure 9 is a structural schematic diagram of the first pressing mechanism of the positioning device provided in an embodiment of the present invention.

[0031] The reference numerals in the accompanying drawings are as follows:

[0032] 1. First positioning mechanism; 11. First drive assembly; 111. First positioning support seat; 112. First lifting drive component; 113. First guide rail; 114. First slider; 12. First positioning component; 13. First support plate; 2. First side positioning assembly; 21. First fastener; 22. First positioning block; 3. Second side positioning assembly; 31. Second fastener; 32. Second positioning block; 4. Support seat; 41. Contouring surface; 5. Second positioning mechanism; 51. Second drive assembly; 52. Second positioning component; 53. Second support plate; 6. First clamping mechanism; 61. First clamping seat; 62. First clamping drive component; 63. First clamping block; 7. Second clamping mechanism; 8. Base plate; 9. Handle; 10. First workpiece; 20. Second workpiece. Detailed Implementation

[0033] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] As shown in Figures 1 to 4, a positioning device provided in one embodiment of the present invention includes a first positioning mechanism 1, a first side positioning component 2, a second side positioning component 3, and a support base 4 with a contoured surface 41. The first side positioning component 2 and the second side positioning component 3 are respectively disposed on adjacent sides of the contoured surface 41 for positioning and contacting adjacent sides of a first workpiece 10 placed on the contoured surface 41. It can be understood that the shape of the contoured surface 41 is the same as the shape of the first workpiece 10, so that the first workpiece 10 can be stably placed on the contoured surface 41.

[0035] The first positioning mechanism 1 includes a first driving assembly 11 and a first positioning element 12. The first driving assembly 11 drives the first positioning element 12 to insert into the first positioning hole of the second workpiece 20 stacked on the first workpiece 10, so as to position and align the first workpiece 10 and the second workpiece 20. It can be understood that the first driving assembly 11 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, and a lead screw and nut assembly, etc., and the first positioning element 12 includes, but is not limited to, a positioning pin, etc.; the first workpiece 10 includes, but is not limited to, the top wing glass, etc., and the second workpiece 20 includes, but is not limited to, the top wing bracket, etc.

[0036] In this invention, the first workpiece 10 is placed on the contoured surface 41 of the support base 4, and the adjacent two sides of the first workpiece 10 abut against the first side positioning component 2 and the second side positioning component 3, respectively. Thus, the first side positioning component 2 positions the first workpiece 10 on the first contoured surface 41 from a first direction, and the second side positioning component 3 positions the first workpiece 10 on the first contoured surface 41 from a second direction; wherein the first direction is perpendicular to the second direction. The first driving component 11 drives the first positioning member 12 downwards until the first positioning member 12 is inserted into the first positioning hole of the second workpiece 20. Since the first workpiece 10 is positioned on the contoured surface 41, and the first positioning member 12 positions the second workpiece 20, the first workpiece 10 and the second workpiece 20 are aligned and positioned together. When the first workpiece 10 is a top wing glass and the second workpiece 20 is a top wing support, the first side positioning component 2 and the second side positioning component 3 can position the side wing glass on the contoured surface 41 from the first direction and the second direction, respectively. The first positioning member 12 inserted into the first positioning hole ensures the assembly accuracy between the top wing support and the top wing glass.

[0037] In one embodiment, as shown in Figures 1 and 8, the first positioning mechanism 1 further includes a first support plate 13; the first driving assembly 11 includes a first positioning support 111, a first lifting drive component 112, a first guide rail 113 mounted on the first positioning support 111, and a first slider 114 slidably mounted on the first guide rail 113; the first positioning component 12 is mounted on the first support plate 13, and the first support plate 13 is mounted on the first slider 114; the first lifting drive component 112 is mounted on the first positioning support 111 and connects the first slider 114 and / or the first support plate 13. It is understood that the first lifting drive component 112 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, and a lead screw and nut assembly; the first guide rail 113 is mounted vertically on the first positioning support 111, and the output end of the first lifting drive component 112 can be connected to either the first slider 114 or the first support plate 13, or it can be connected to both the first slider 114 and the first support plate 13 simultaneously.

[0038] Specifically, the first lifting drive 112 drives the first slider 114 and the first support plate 13 to move in the vertical direction. The first slider 114 slides on the first guide rail 113, thereby ensuring the stability of the first support plate 13 and the first positioning member 12 moving in the vertical direction, so that the first positioning member 12 can be smoothly inserted into the first positioning hole.

[0039] In one embodiment, as shown in Figures 1 and 2, the positioning device further includes a second positioning mechanism 5, with the first positioning mechanism 1 and the second positioning mechanism 5 located on opposite sides of the support base 4, respectively; it can be understood that the first positioning mechanism 1 and the second positioning mechanism 5 are located on the left and right sides of the support base 4 along the first direction, respectively.

[0040] The second positioning mechanism 5 includes a second driving assembly 51 and a second positioning element 52; the second driving assembly 51 is used to drive the second positioning element 52 to insert into the second positioning hole of the second workpiece 20. It can be understood that the first driving assembly 11 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, and a lead screw and nut assembly, etc., and the first positioning element 12 includes, but is not limited to, a positioning pin, etc.

[0041] Specifically, the first workpiece 10 is placed on the contoured surface 41 of the support base 4, and the adjacent two sides of the first workpiece 10 abut against the first side positioning component 2 and the second side positioning component 3, respectively. Thus, the first side positioning component 2 positions the first workpiece 10 on the contoured surface 41 from a first direction, and the second side positioning component 3 positions the first workpiece 10 on the contoured surface 41 from a second direction. The first driving component 11 drives the first positioning member 12 downwards until it is inserted into the first positioning hole of the second workpiece 20; and the second driving component 51 drives the second positioning member 52 downwards until it is inserted into the second positioning hole of the second workpiece 20. In this embodiment, the first positioning member 12 and the second positioning member 52 can position the second workpiece 20 from both sides, further ensuring the assembly accuracy between the first workpiece 10 and the second workpiece 20.

[0042] In one embodiment, as shown in FIG1, the second positioning mechanism 5 further includes a second support plate 53; the second driving assembly 51 includes a second positioning support base, a second lifting drive component, a second guide rail mounted on the second positioning support base, and a second slider slidably mounted on the second guide rail; the second positioning component 52 is mounted on the second support plate 53, and the second support plate 53 is mounted on the second slider; the second lifting drive component is mounted on the second positioning support base and connects the second slider and / or the second support plate 53. It is understood that the second lifting drive component includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, and a lead screw and nut assembly; the second guide rail is mounted vertically on the second positioning support base, and the output end of the second lifting drive component can be connected to either the second slider or the second support plate 53, or it can be connected to both the second slider and the second support plate 53 simultaneously.

[0043] Specifically, the second lifting drive unit drives the second slider and the second support plate 53 to move in the vertical direction, and the second slider slides on the second guide rail, thereby ensuring the stability of the movement of the second support plate 53 and the second positioning member in the vertical direction of 52, so that the second positioning member 52 can be smoothly inserted into the second positioning hole.

[0044] In one embodiment, as shown in Figures 5 to 7, the first positioning member 12 is clearance-fitted with the first positioning hole. The first positioning member 12 inserted into the first positioning hole is used to position the second workpiece 20 in the second direction. It can be understood that the first positioning member 12 inserted into the first positioning hole can move in the first direction, but cannot move in the second direction, so that the second positioning member 52 inserted into the second positioning hole can position the second workpiece 20 in the second direction.

[0045] The second positioning element 52 is interference-fitted with the second positioning hole. The second positioning element 52, inserted into the second positioning hole, is used to position the second workpiece 20 along the first direction and the second direction; wherein, the first direction is perpendicular to the second direction. It can be understood that the interference fit between the second positioning element 52 and the second positioning hole allows the second positioning element 52 inserted into the second positioning hole to position the second workpiece 20 from both the first and second directions.

[0046] Specifically, after the first positioning member 12 is inserted into the first positioning hole, the second positioning member 52 is then inserted into the second positioning hole. Because the first positioning member 12 is inserted into the first positioning hole, the second workpiece 20 can move along the first direction, ensuring that the second positioning member 52 can be smoothly inserted into the second positioning hole.

[0047] In one embodiment, the first positioning hole is an elongated hole, and the first positioning member 12 is an elongated pin adapted to the elongated hole. Understandably, the elongated hole extends along a first direction, and when the elongated pin is inserted into the elongated hole, the elongated pin can move along the first direction but cannot move along the second direction, so that the elongated pin inserted into the elongated hole can position the second workpiece 20 along the second direction.

[0048] The second positioning hole is a round hole, and the second positioning element 52 is a round pin adapted to the round hole. It can be understood that the round pin and the round hole are interference-fitted, so that the round pin inserted into the round hole can position the second workpiece along a first direction and a second direction.

[0049] In one embodiment, as shown in Figures 1 and 2, the positioning device further includes a first pressing mechanism 6 and a second pressing mechanism 7. The first pressing mechanism 6 and the second pressing mechanism 7 are located on opposite sides of the support base 4, and both are used to press the second workpiece 20 onto the first workpiece 10. It can be understood that the first pressing mechanism 6 and the second pressing mechanism 7 are located on opposite sides of the support base 4 along the second direction, and one or more of the first pressing mechanism 6 and the second pressing mechanism 7 can be provided according to actual needs.

[0050] Specifically, the first workpiece 10 is placed on the contoured surface 41 of the support base 4, and the adjacent sides of the first workpiece 10 abut against the first side positioning component 2 and the second side positioning component 3 respectively; the first positioning component 12 and the second workpiece 20 are respectively inserted into the first positioning hole and the second positioning hole of the second workpiece 20; the first pressing mechanism 6 and the second pressing mechanism 7 then press the second workpiece 20 against the first workpiece 10 from opposite sides, thereby ensuring the bonding strength between the first workpiece 10 and the second workpiece 20.

[0051] In one embodiment, as shown in Figures 1 and 9, the first pressing mechanism 6 includes a first pressing seat 61, a first pressing drive 62, and a first pressing block 63 rotatably mounted on the first pressing seat 61; the first pressing drive 62 is mounted on the first pressing seat 61 and connected to the first pressing block 63; the first pressing drive 62 is used to drive the first pressing block 63 to rotate, so that the first pressing block 63 presses or releases the first workpiece 10 and the second workpiece 20; it can be understood that the first pressing drive 62 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, and a linear motor, etc., and the output end of the first pressing drive 62 can be rotatably connected to the first pressing block 63, so that the first pressing drive 62 can drive the first pressing block 63 to rotate, and the first pressing block 63 can press or release the second workpiece 20.

[0052] The second clamping mechanism 7 includes a second clamping seat, a second clamping drive, and a second clamping block rotatably mounted on the second clamping seat. The second clamping drive is mounted on the second clamping seat and connected to the second clamping block. The second clamping drive is used to drive the second clamping block to rotate, so that the second clamping block clamps or releases the first workpiece 10 and the second workpiece 20. It is understood that the second clamping drive includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, and a linear motor. The output end of the second clamping drive can be rotatably connected to the second clamping block, so that the second clamping drive can drive the second clamping block to rotate, and the second clamping block can clamp or release the second workpiece 20. In this embodiment, the first clamping mechanism 6 and the second clamping mechanism 7 have simple structures and are easy to operate.

[0053] In one embodiment, as shown in Figures 1 and 2, the positioning device further includes a base plate 8, on which the support base 4, the first drive assembly 11, the first clamping mechanism 6, and the second clamping mechanism 7 are all mounted. Understandably, the first positioning support base 111, the second positioning support base, the first clamping base 61, the second clamping base, and the support base 4 are all mounted on the base plate 8; the design of the base plate 8 facilitates the handling of the positioning device.

[0054] In one embodiment, as shown in Figures 1 and 2, the positioning device further includes a handle 9 mounted on the base plate 8. It is understood that the handle 9 includes, but is not limited to, a lifting ring; preferably, handles 9 are installed at all four corners of the base plate 8. In this embodiment, the design of the handle 9 further improves the ease of handling the positioning device.

[0055] In one embodiment, as shown in Figures 2 to 4, the first side positioning component 2 includes a first fastener 21 and a first positioning block 22 with a first connecting hole. The support base 4 has a second connecting hole. The first fastener 21 is inserted into the first connecting hole and the second connecting hole. The first positioning block 22 is used to position the first workpiece 10 on the contour surface 41 along a first direction. It can be understood that the first fastener 21 includes, but is not limited to, screws, bolts, etc. The first fastener 21 can be connected to the first connecting hole and the second connecting hole through a threaded structure. The first positioning block 22 extends above the contour surface 41, so that the first positioning block 22 can position the first workpiece 10 on the contour surface 41 from the first direction.

[0056] The second side positioning assembly 3 includes a second fastener 31 and a second positioning block 32 with a third connecting hole. The support base 4 has a fourth connecting hole. The second fastener 31 is inserted into the third connecting hole and the fourth connecting hole. The second positioning block 32 is used to position the first workpiece 10 on the contour surface 41 along a second direction perpendicular to the first direction. It is understood that the second fastener 31 includes, but is not limited to, screws, bolts, etc. The second fastener 31 can be connected to the third connecting hole and the fourth connecting hole by a threaded structure. The second positioning block 32 extends above the contour surface 41, so that the second positioning block 32 can position the first workpiece 10 on the contour surface 41 from the second direction.

[0057] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A positioning device, characterized in that, The device includes a first positioning mechanism, a first side positioning component, a second side positioning component, and a support base with a contoured surface. The first side positioning component and the second side positioning component are respectively disposed on adjacent sides of the contoured surface for positioning and abutting against adjacent side edges of a first workpiece placed on the contoured surface. The first positioning mechanism includes a first driving component and a first positioning member. The first driving component is used to drive the first positioning member to insert into a first positioning hole of a second workpiece stacked on the first workpiece, so as to position and align the first workpiece and the second workpiece.

2. The positioning device according to claim 1, characterized in that, The first positioning mechanism further includes a first support plate; the first driving assembly includes a first positioning support base, a first lifting drive component, a first guide rail mounted on the first positioning support base, and a first slider slidably mounted on the first guide rail; the first positioning component is mounted on the first support plate, and the first support plate is mounted on the first slider; the first lifting drive component is mounted on the first positioning support base and connected to the first slider and / or the first support plate.

3. The positioning device according to claim 1, characterized in that, The positioning device further includes a second positioning mechanism, wherein the first positioning mechanism and the second positioning mechanism are located on opposite sides of the support base; the second positioning mechanism includes a second driving component and a second positioning element; the second driving component is used to drive the second positioning element to be inserted into the second positioning hole of the second workpiece.

4. The positioning device according to claim 3, characterized in that, The second positioning mechanism further includes a second support plate; the second driving assembly includes a second positioning support, a second lifting drive, a second guide rail mounted on the second positioning support, and a second slider slidably mounted on the second guide rail; the second positioning drive is mounted on the second support plate, and the second support plate is mounted on the second slider; the second lifting drive is mounted on the second positioning support and connects the second slider and / or the second support plate.

5. The positioning device according to claim 3, characterized in that, The first positioning member is clearance-fitted with the first positioning hole, and the first positioning member inserted into the first positioning hole is used to position the second workpiece along the second direction; the second positioning member is interference-fitted with the second positioning hole, and the second positioning member inserted into the second positioning hole is used to position the second workpiece along the first direction and the second direction; wherein, the first direction is perpendicular to the second direction.

6. The positioning device according to claim 3, characterized in that, The first positioning hole is an oblong hole, and the first positioning element is an oblong pin adapted to the oblong hole; the second positioning hole is a round hole, and the second positioning element is a round pin adapted to the round hole.

7. The positioning device according to claim 1, characterized in that, The positioning device further includes a first pressing mechanism and a second pressing mechanism, which are located on opposite sides of the support base and are both used to press the second workpiece onto the first workpiece.

8. The positioning device according to claim 7, characterized in that, The first clamping mechanism includes a first clamping seat, a first clamping drive, and a first clamping block rotatably mounted on the first clamping seat; the first clamping drive is mounted on the first clamping seat and connected to the first clamping block; the first clamping drive is used to drive the first clamping block to rotate, so that the first clamping block clamps or releases the first workpiece and the second workpiece; the second clamping mechanism includes a second clamping seat, a second clamping drive, and a second clamping block rotatably mounted on the second clamping seat; the second clamping drive is mounted on the second clamping seat and connected to the second clamping block; the second clamping drive is used to drive the second clamping block to rotate, so that the second clamping block clamps or releases the first workpiece and the second workpiece.

9. The positioning device according to claim 7, characterized in that, The positioning device also includes a base plate, and the support base, the first drive assembly, the first pressing mechanism and the second pressing mechanism are all mounted on the base plate.

10. The positioning device according to claim 1, characterized in that, The first side positioning assembly includes a first fastener and a first positioning block with a first connecting hole. The support base has a second connecting hole, and the first fastener is inserted into the first connecting hole and the second connecting hole. The first positioning block is used to position the first workpiece on the contour surface along a first direction. The second side positioning assembly includes a second fastener and a second positioning block with a third connecting hole. The support base has a fourth connecting hole, and the second fastener is inserted into the third connecting hole and the fourth connecting hole. The second positioning block is used to position the first workpiece on the contour surface along a second direction perpendicular to the first direction.

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