Pressing device for automatic welding

Abstract

The invention provides a pressing device for automatic welding, which is used for pressing a workpiece and comprises a base provided with a mounting port; the supporting assembly is arranged in the mounting opening, the supporting assembly is mounted on the base, and a positioning assembly is arranged at the top of the supporting assembly and used for positioning a workpiece; the expanding and supporting assembly is installed on the base, the expanding and supporting assembly is provided with a plug block assembly capable of moving in the horizontal direction, and the plug block assembly is used for tightly supporting a workpiece; and the downward pressing assembly is installed on the base, and the downward pressing assembly is used for pressing the workpiece downwards. According to the scheme, mechanical pressing of the workpiece can be achieved, and the pressing efficiency of the workpiece can be improved.

Description

Technical Field

[0001] The invention relates to the field of welding tools, and in particular to a clamping device for automatic welding. Background Art

[0002] At present, in order to ensure that the product meets the size requirements after welding and reduce the impact of welding thermal deformation on the product size, factories generally use welding jigs as auxiliary tools for product production. Workers put the product components into the jigs, clamp them manually, and then perform welding operations manually. Under the external force of the jigs, the impact of thermal deformation during welding on the product is reduced. With the expansion of factory production capacity and the development of intelligence, traditional welding jigs combined with manual welding have problems such as insufficient production efficiency, and product consistency and welding quality are seriously dependent on the welding experience of welders. Therefore, the technical problem that this application needs to solve is: how to improve the clamping efficiency of the product. Summary of the invention

[0003] In order to solve the above technical problems, the present invention proposes a clamping device for automated welding. This solution can achieve mechanized clamping of the workpiece and improve the clamping efficiency of the workpiece.

[0004] Specifically, the present invention provides a clamping device for automated welding, which is used to clamp a workpiece, comprising:

[0005] A base, wherein a mounting opening is provided on the base;

[0006] A support assembly, the support assembly is arranged in the installation opening, and the support assembly is installed on the base, a positioning assembly is provided on the top of the support assembly, and the positioning assembly is used to position the workpiece;

[0007] An expansion and support assembly, wherein the expansion and support assembly is installed on the base and has a plug assembly that can move in a horizontal direction, and the plug assembly is used to tighten the workpiece;

[0008] A pressing assembly is installed on the base and is used to press the workpiece downward.

[0009] Preferably, the workpiece comprises:

[0010] A bottom plate, with side plates vertically fixed to the edges of the bottom plate;

[0011] A first top plate, wherein the first top plate is parallel to the bottom plate and is arranged at one end of the bottom plate;

[0012] A second top plate, the second top plate is parallel to the bottom plate, and the second top plate is arranged at the other end of the bottom plate;

[0013] The first top plate and the second top plate are used to be welded to an end of the side plate away from the bottom plate, and a distance is left between the first top plate and the second top plate;

[0014] Positioning holes are respectively provided on the first top plate and the second top plate.

[0015] Preferably, the expansion and support assembly includes two plug block assemblies, and the two plug block assemblies are arranged between the first top plate and the second top plate, one of the plug block assemblies is used to tighten the first top plate, and the other plug block assembly is used to tighten the second top plate.

[0016] Preferably, the expansion component comprises:

[0017] A transverse movement mounting seat, wherein the transverse movement mounting seat is mounted on the base,

[0018] A fixed plate, the fixed plate is arranged on the top of the transverse mounting seat, and the two plug block assemblies are mounted on the fixed plate through a first slide rail assembly;

[0019] A first driving member, the number of which is the same as the number of the block assemblies, and each of which is used to control the movement of a block assembly.

[0020] Preferably, the first driving member comprises a first telescopic member, the first telescopic member is mounted on the transverse mounting seat, the top of the piston rod of the first telescopic member passes through the avoidance opening of the fixed plate and extends upward, and the piston rod of the first telescopic member is hinged to the slider in the first slide rail assembly through a hinged arm;

[0021] The number of the transverse movement mounting seats is the same as the number of the first telescopic members.

[0022] Preferably, the block assembly comprises a horizontal arm and a block portion, the horizontal arm is mounted on a slider of the first slide rail assembly, and the block portion is mounted on an end of the horizontal arm;

[0023] The plug block portion in one plug block assembly is used to compress the first top plate, and the plug block portion in the other plug block assembly is used to compress the second top plate.

[0024] Preferably, the positioning assembly includes two groups of positioning modules, each group of the positioning modules includes a first positioning pin and a second positioning pin, and the height of the first positioning pin is greater than the height of the second positioning pin.

[0025] One group of positioning modules is used to position the first top plate, and the other group of positioning modules is used to position the second top plate.

[0026] Preferably, the support assembly comprises

[0027] A lifting and fixing seat, the lifting and fixing seat having a vertical arm and a horizontal arm, the vertical arm is located in the mounting opening, and the horizontal arm is fixed on the base;

[0028] A lifting assembly, the lifting assembly is mounted on the vertical arm and has an output end that moves in a vertical direction;

[0029] A supporting module is installed on the output end of the lifting assembly and is used to support a workpiece.

[0030] An exit module, the exit module is installed below the support module, and the exit module has an output end that moves in a vertical direction;

[0031] The first positioning pin is fixed on the supporting module, the second positioning pin is arranged on the output end of the exiting module, and the top end of the second positioning pin can slide through the supporting module in a vertical direction and extend upward;

[0032] Preferably, the number of the supporting components is the same as the number of the positioning modules.

[0033] Preferably, the lifting assembly comprises:

[0034] a second slide rail assembly, the second slide rail assembly being mounted on the vertical arm along a vertical direction;

[0035] A connecting seat, the connecting seat is fixed on the slider of the second slide rail assembly, and the supporting module is installed on the connecting seat;

[0036] A second telescopic member is installed at the bottom of the vertical arm through a support, and the second telescopic member is used to drive the connecting seat to rise and fall.

[0037] Preferably, the connecting seat is connected to the supporting module via a first adjusting gasket.

[0038] Preferably, the support module comprises:

[0039] A first supporting seat, wherein the first supporting seat is mounted on the connecting seat through a first adjusting gasket;

[0040] a second support seat, the second support seat being mounted on the first support seat through a second adjusting gasket;

[0041] A support block is installed on the second support seat through a third adjusting gasket, and an avoidance hole is provided on the support block.

[0042] Preferably, the first adjusting gasket is used to adjust the distance between the connecting seat and the first supporting seat along the X-axis direction;

[0043] The second adjusting gasket is used to adjust the distance between the first supporting seat and the second supporting seat along the Y-axis direction.

[0044] The third adjusting gasket is used to adjust the distance between the supporting block and the second supporting seat along the Z-axis direction.

[0045] Preferably, each of the support assemblies has two support modules, one of the support modules is used to install the first positioning pin, and the other of the support modules is used to install the second positioning pin.

[0046] Preferably, the pressing assembly comprises:

[0047] A compression cylinder module is mounted on the base, and an output end of the compression cylinder module is

[0048] A clamping arm is arranged on the output end of the clamping cylinder module through a mounting arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0050] Figure 1 It is a three-dimensional structural schematic diagram of a clamping device for automated welding proposed in this embodiment;

[0051] Figure 2 yes Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0052] Figure 3 This is a schematic diagram of the assembly between an automatic welding clamping device and a workpiece proposed in this embodiment.

[0053] Figure 4 It is a three-dimensional structural schematic diagram of the expansion support assembly;

[0054] Figure 5 is a schematic diagram of the internal structure of the expansion support assembly;

[0055] Figure 6 is a schematic diagram of the three-dimensional structure of the workpiece in this embodiment;

[0056] Figure 7 is a side view of the workpiece in this embodiment;

[0057] Figure 8 is a schematic diagram of the three-dimensional structure of the support assembly in this embodiment;

[0058] Fig. 9 It is a schematic diagram of the internal structure of the support assembly in this embodiment.

[0059] The reference numerals in the accompanying drawings are as follows:

[0060] 11-base; 12-mounting port; 13-support assembly; 14-positioning assembly; 15-workpiece; 16-expansion support assembly; 17-pressing assembly; 18-bottom plate; 19-side plate; 20-first top plate; 21-second top plate; 22-transverse mounting seat; 23-fixed plate; 24-first slide rail assembly; 25-first telescopic member; 26-articulated arm; 27-horizontal arm; 28-blocking part; 29-first positioning pin; 30-second positioning pin ;31-lifting fixed seat;32-vertical arm;33-horizontal arm;34-lifting assembly;35-support module;36-exit module;37-second slide rail assembly;38-connecting seat;39-second telescopic member;40-first adjusting gasket;41-first supporting seat;42-second supporting seat;43-second adjusting gasket;44-support block;45-third adjusting gasket;46-clamping cylinder module;47-clamping arm;48-installing arm. DETAILED DESCRIPTION

[0061] The technical solution of the present application is further described below in conjunction with specific embodiments, but the present application is not limited to these embodiments.

[0062] like Figures 1 to 9 As shown, this embodiment provides an automatic welding clamping device for clamping a workpiece 15, comprising:

[0063] A base 11, wherein a mounting opening 12 is provided on the base 11;

[0064] A support assembly 13, the support assembly 13 is arranged in the installation opening 12, and the support assembly 13 is installed on the base 11, and a positioning assembly 14 is provided on the top of the support assembly 13, and the positioning assembly 14 is used to position the workpiece 15;

[0065] The expansion and support assembly 16 is installed on the base 11, and the expansion and support assembly 16 has a plug assembly that can move in the horizontal direction, and the plug assembly is used to tighten the workpiece 15;

[0066] The pressing assembly 17 is installed on the base 11 and is used to press the workpiece 15 downward.

[0067] The technical effect of this solution is that this solution can achieve mechanized pressing of the workpiece 15 and can improve the pressing efficiency of the workpiece 15 .

[0068] Furthermore, the workpiece 15 includes:

[0069] A bottom plate 18, with side plates 19 vertically fixed to the edges of the bottom plate 18;

[0070] A first top plate 20, the first top plate 20 is parallel to the bottom plate 18, and the first top plate 20 is disposed at one end of the bottom plate 18;

[0071] A second top plate 21, the second top plate 21 is parallel to the bottom plate 18, and the second top plate 21 is arranged at the other end of the bottom plate 18;

[0072] The first top plate 20 and the second top plate 21 are used to be welded to one end of the side plate 19 away from the bottom plate 18, and a distance is left between the first top plate 20 and the second top plate 21;

[0073] Positioning holes are respectively provided on the first top plate 20 and the second top plate 21 .

[0074] The bottom plate 18 and the side plate 19 are pre-welded together, and the clamping device in this solution is used to clamp the first top plate 20 and the second top plate 21 onto the side plate 19; in this solution, a positioning hole is provided on the bottom plate 18. The positioning assembly 14 is inserted into the positioning holes of the bottom plate 18 and the first top plate 20, and the positioning assembly 14 is inserted into the positioning holes of the bottom plate 18 and the second top plate 21.

[0075] The bottom plate 18 is provided with four positioning holes, the first top plate 20 is provided with two positioning holes, and the second top plate 21 is provided with two positioning holes.

[0076] Two positioning holes on the bottom plate 18 are coaxially arranged with the positioning holes on the first top plate 20 , and the other two positioning holes on the bottom plate 18 are coaxially arranged with the positioning holes on the second top plate 21 .

[0077] As an implementation of this embodiment, the expansion and support assembly 16 includes two plug block assemblies, which are arranged between the first top plate 20 and the second top plate 21. One plug block assembly is used to tighten the first top plate 20, and the other plug block assembly is used to tighten the second top plate 21.

[0078] The two plug block assemblies of the expansion and support assembly 16 in this solution are used to squeeze the first top plate 20 and the second top plate 21 respectively, so as to compress the first top plate 20 and the second top plate 21 in the horizontal direction.

[0079] As an implementation of this embodiment, the expansion component 16 includes:

[0080] The traverse mounting seat 22 is mounted on the base 11.

[0081] A fixed plate 23, the fixed plate 23 is arranged on the top of the transverse mounting seat 22, and the two plug block assemblies are installed on the fixed plate 23 through the first slide rail assembly 24;

[0082] The first driving member, the number of the first driving members is the same as the number of the plug block assemblies, and each first driving member is used to control the movement of a plug block assembly.

[0083] Further, the first driving member includes a first telescopic member 25, which is mounted on the transverse mounting seat 22, the top of the piston rod of the first telescopic member 25 passes through the avoidance opening of the fixed plate 23 and extends upward, and the piston rod of the first telescopic member 25 is hinged to the slider in the first slide rail assembly 24 through the hinge arm 26;

[0084] When the piston rod of the first telescopic member 25 is not long enough, an extension arm is installed on the piston rod of the first telescopic member 25 , and is rotatably connected to the articulated arm 26 via the extension arm.

[0085] The number of the transverse movement mounting seats 22 is the same as the number of the first telescopic members 25 .

[0086] The first driving member in this solution is in the form of a first telescopic member 25, and the extension direction of the first telescopic member 25 is arranged along the vertical direction. The slider in the first slide rail assembly 24 is driven by setting an articulated arm 26. This method can save the space occupied by the first driving member.

[0087] If other methods are used, a large area will be occupied in the horizontal direction, and other driving forms are not convenient to be arranged in the gap between the first top plate 20 and the second top plate 21. This structure of the present solution drives the articulated arm 26 to move through the cylinder, thereby controlling the movement of the slider in the first slide rail assembly 24.

[0088] The plug assembly includes a horizontal arm 27 and a plug portion 28. The horizontal arm 27 is mounted on the slider of the first slide rail assembly 24, and the plug portion 28 is mounted on the end of the horizontal arm 27.

[0089] The plug part 28 in one plug assembly is used to compress the first top plate 20 , and the plug part 28 in the other plug assembly is used to compress the second top plate 21 .

[0090] As an implementation of this embodiment, the positioning assembly 14 includes two groups of positioning modules, each group of positioning modules includes a first positioning pin 29 and a second positioning pin 30 , and the height of the first positioning pin 29 is greater than the height of the second positioning pin 30 .

[0091] One group of positioning modules is used to position the first top plate 20 , and the other group of positioning modules is used to position the second top plate 21 .

[0092] This scheme adopts a high locating pin and a low locating pin. Wherein, the first locating pin 29 can penetrate to the top of the bottom plate 18, and the second locating pin 30 is only used for positioning the first top plate 20 or the second top plate 21.

[0093] When the workpiece 15 is positioned, the bottom plate 18, the first top plate 20 and the second top plate 21 are locked by two positioning pins respectively. Among them, the two first positioning pins 29 penetrated through the bottom plate 18 are located at the diagonal position of the bottom plate 18.

[0094] Furthermore, the top ends of the first positioning pin 29 and the second positioning pin 30 are chamfered. The first positioning pin 29 or the second positioning pin 30 can be a round pin or a diamond pin.

[0095] As an implementation method of this embodiment, the support assembly 13 includes

[0096] A lifting and fixing seat 31, wherein the lifting and fixing seat 31 has a vertical arm 32 and a horizontal arm 33, wherein the vertical arm 32 is located in the mounting opening 12, and the horizontal arm 33 is fixed on the base 11;

[0097] A lifting assembly 34, the lifting assembly 34 is mounted on the vertical arm 32, and the lifting assembly 34 has an output end that moves in a vertical direction;

[0098] A support module 35 , which is mounted on the output end of the lifting assembly 34 and is used to support the workpiece 15 ;

[0099] An exit module 36, which is installed below the support module 35, and has an output end that moves in a vertical direction;

[0100] The first positioning pin 29 is fixed on the supporting module 35 , the second positioning pin 30 is arranged on the output end of the exiting module 36 , and the top end of the second positioning pin 30 can slide through the supporting module 35 in the vertical direction and extend upward.

[0101] The technical effect of this solution is that after the workpiece 15 is welded, the support assembly 13 returns to the initial state, and under the action of the expansion assembly 16, the output end of the lifting assembly 34 drops to a preset height. At this time, the second positioning pin 30 is separated from the workpiece 15, and the first positioning pin 29 remains in the positioning hole of the workpiece 15, which plays a role in limiting the workpiece 15. At this time, the worker can take out the workpiece 15 more easily.

[0102] As an implementation of this embodiment, the number of support components 13 is the same as the number of positioning modules.

[0103] As an implementation of this embodiment, the lifting assembly 34 includes:

[0104] A second slide rail assembly 37, the second slide rail assembly 37 is mounted on the vertical arm 32 along the vertical direction;

[0105] A connecting seat 38, the connecting seat 38 is fixed on the slider of the second slide rail assembly 37, and the supporting module 35 is installed on the connecting seat 38;

[0106] The second telescopic member 39 is installed at the bottom of the vertical arm 32 through a support, and the second telescopic member 39 is used to drive the connection seat 38 to rise and fall. The second telescopic member 39 adopts a cylinder or a hydraulic cylinder. The piston rod of the second telescopic member 39 is hinged to the lower end of the connection seat 38.

[0107] Furthermore, the exit module 36 adopts a third telescopic member, and the third telescopic member adopts a pneumatic cylinder or a hydraulic cylinder.

[0108] As an implementation of this embodiment, the connection seat 38 is connected to the support module 35 through a first adjustment gasket 40. The connection seat 38 and the support module 35 are connected by bolts, and the first adjustment gasket 40 is located between the connection seat 38 and the support module 35.

[0109] As an implementation of this embodiment, the support module 35 includes:

[0110] A first support seat 41, the first support seat 41 is installed on the connecting seat 38 through a first adjusting gasket 40;

[0111] A second support seat 42, the second support seat 42 is mounted on the first support seat 41 through a second adjusting gasket 43;

[0112] The support block 44 is mounted on the second support seat 42 through a third adjusting gasket 45 , and an avoidance hole is provided on the support block 44 .

[0113] The second support seat 42 and the first support seat 41 are connected by bolts, and the second adjustment gasket 43 is located between the second support seat 42 and the first support seat 41 .

[0114] The support block 44 and the second support seat 42 are connected by bolts, and the third adjustment gasket 45 is located between the support block 44 and the second support seat 42 .

[0115] As an implementation of this embodiment, the first adjustment gasket 40 is used to adjust the distance between the connecting seat 38 and the first supporting seat 41 along the X-axis direction;

[0116] The second adjusting gasket 43 is used to adjust the distance between the first supporting seat 41 and the second supporting seat 42 along the Y-axis direction.

[0117] The third adjusting gasket 45 is used to adjust the distance between the supporting block 44 and the second supporting seat 42 along the Z-axis direction.

[0118] In this solution, the position adjustment is achieved by replacing the above gaskets with different thicknesses.

[0119] As an implementation of this embodiment, each support assembly 13 has two support modules 35 , one support module 35 is used to install the first positioning pin 29 , and the other support module 35 is used to install the second positioning pin 30 .

[0120] As an implementation of this embodiment, the pressing assembly 17 includes:

[0121] The clamping cylinder module 46 is mounted on the base 11 , and a clamping arm 47 is disposed on the output end of the clamping cylinder module 46 . The clamping arm 47 is disposed on the output end of the clamping cylinder module 46 through a mounting arm 48 .

[0122] The pressing cylinder module 46 adopts a rotary cylinder, and the mounting arm 48 can rotate, thereby driving the pressing arm 47 to press the workpiece 15 .

[0123] The scheme works as follows:

[0124] The initial state of the tooling, such as Figure 1 As shown, at this time, the positioning lifting assembly 34 is in the jacking state, the first positioning pin 29 of the exit module 36 is in the extended state, the clamping arm 47 in the pressing assembly 17 is in the upright state, and the plug part 28 in the expansion assembly 16 is in the retracted state. The worker first manually places the first top plate 20 at the corresponding position of the tooling, and makes the positioning holes on the first top plate 20 penetrate the corresponding positioning pins respectively, and puts the second top plate 21 at the corresponding position of the tooling, and the positioning holes on the second top plate 21 penetrate the corresponding positioning pins respectively. Figure 3 As shown, after placement is completed, the bottom plate 18 is buckled in above the two top plates, and at the same time, two long first positioning pins 29 are inserted into the positioning holes on the bottom plate 18. At this time, the three components of the workpiece 15 are restricted in their degrees of freedom by two pins on one side, and the relative positions of the components of the workpiece 15 are accurate. After completing the steps of placing the components of the workpiece 15, the worker evacuates to a safe position and presses the start button. At this time, the piston rod of the first telescopic member 25 in the expansion assembly 16 is pushed out, and the plug part 28 is driven by the articulated arm 26 to move laterally along the length direction of the first slide rail assembly 24 and outward. The plug parts 28 on both sides are respectively inserted into the gaps between the first top plate 20, the second top plate 21 and the bottom plate 18 of the workpiece 15, and the pressing assembly 17 lowers the clamping arm 47 to make the workpiece 15 fit tightly with the plug part 28. Then the automatic welding process begins.

[0125] After welding is completed, the pressing assembly 17 lifts the clamping arm 47, the expansion assembly 16 retracts the plug part 28, and the second telescopic member 39 in the positioning and lifting assembly 34 drives the first positioning pin 29 and the second positioning pin 30 to move downward synchronously, and the second positioning pin 30 is separated from the workpiece 15. The exit module 36 drives the first positioning pin 29 to be retracted, and the top of the first positioning pin 29 is separated from the bottom plate 18. At this time, the two first positioning pins 29 are respectively left in the positioning holes of the first top plate 20 and the second top plate 21 of the workpiece 15, which play a role in limiting the workpiece 15. At this time, the plug part 28 plays a supporting role on the workpiece 15. At the same time, the worker can easily take the workpiece 15 out of the tooling.

[0126] For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A clamping device for automated welding, used for clamping a workpiece (15), characterized in that: include: A base (11), wherein the base (11) is provided with a mounting opening (12); A support assembly (13), the support assembly (13) being arranged in the installation opening (12), and the support assembly (13) being installed on the base (11), and a positioning assembly (14) being arranged on the top of the support assembly (13), and the positioning assembly (14) being used to position the workpiece (15); An expansion and support assembly (16), the expansion and support assembly (16) being mounted on the base (11), and the expansion and support assembly (16) having a plug assembly that can move in a horizontal direction, the plug assembly being used to tighten the workpiece (15); A pressing component (17), wherein the pressing component (17) is installed on the base (11), and the pressing component (17) is used to press the workpiece (15) downward.

2. The automatic welding clamping device according to claim 1, characterized in that: The workpiece (15) comprises: A bottom plate (18), with side plates (19) vertically fixed to the edges of the bottom plate (18); A first top plate (20), wherein the first top plate (20) is parallel to the bottom plate (18), and the first top plate (20) is arranged at one end of the bottom plate (18); a second top plate (21), the second top plate (21) being parallel to the bottom plate (18), and the second top plate (21) being arranged at the other end of the bottom plate (18); The first top plate (20) and the second top plate (21) are used to be welded to an end of the side plate (19) away from the bottom plate (18), and a distance is left between the first top plate (20) and the second top plate (21); Positioning holes are respectively provided on the first top plate (20) and the second top plate (21).

3. The automatic welding clamping device according to claim 2, characterized in that: The expansion and support assembly (16) comprises two plug assemblies, which are arranged between the first top plate (20) and the second top plate (21), one of the plug assemblies being used to tighten the first top plate (20), and the other of the plug assemblies being used to tighten the second top plate (21).

4. The automatic welding clamping device according to claim 3, characterized in that: The expansion component (16) comprises: A transverse movement mounting seat (22), wherein the transverse movement mounting seat (22) is mounted on the base (11); A fixed plate (23), the fixed plate (23) being arranged on the top of the transverse mounting seat (22), and the two plug block assemblies being mounted on the fixed plate (23) via a first slide rail assembly (24); A first driving member, the number of which is the same as the number of the block assemblies, and each of which is used to control the movement of a block assembly.

5. The automatic welding clamping device according to claim 4, characterized in that: The first driving member comprises a first telescopic member (25), the first telescopic member (25) is mounted on the transverse mounting seat (22), the top of the piston rod of the first telescopic member (25) passes through the avoidance opening of the fixed plate (23) and extends upward, and the piston rod of the first telescopic member (25) is hinged to the slider in the first slide rail assembly (24) through a hinge arm (26); The number of the transverse movement mounting seats (22) is the same as the number of the first telescopic members (25).

6. The automatic welding clamping device according to claim 2, characterized in that: The positioning assembly (14) comprises two groups of positioning modules, each group of the positioning modules comprises a first positioning pin (29) and a second positioning pin (30), and the height of the first positioning pin (29) is greater than the height of the second positioning pin (30); One group of positioning modules is used to position the first top plate (20), and the other group of positioning modules is used to position the second top plate (21).

7. The automatic welding clamping device according to claim 6, characterized in that: The support assembly (13) comprises A lifting and fixing seat (31), the lifting and fixing seat (31) having a vertical arm (32) and a horizontal arm (33), the vertical arm (32) being located in the installation opening (12), and the horizontal arm (33) being fixed on the base (11); A lifting assembly (34), the lifting assembly (34) being mounted on the vertical arm (32), and the lifting assembly (34) having an output end that moves in a vertical direction; A support module (35), the support module (35) being mounted on the output end of the lifting assembly (34), and the support module (35) being used to support the workpiece (15); An exit module (36), the exit module (36) being installed below the support module (35), and the exit module (36) having an output end that moves in a vertical direction; The first positioning pin (29) is fixed on the supporting module (35), the second positioning pin (30) is arranged on the output end of the exit module (36), and the top end of the second positioning pin (30) can slide through the supporting module (35) in a vertical direction and extend upward.

8. The automatic welding clamping device according to claim 7, characterized in that: The number of the supporting components (13) is the same as the number of the positioning modules.

9. The automatic welding clamping device according to claim 8, characterized in that: The lifting assembly (34) comprises: A second slide rail assembly (37), wherein the second slide rail assembly (37) is mounted on the vertical arm (32) in a vertical direction; A connecting seat (38), the connecting seat (38) being fixed on the slider of the second slide rail assembly (37), and the supporting module (35) being installed on the connecting seat (38); A second telescopic member (39), wherein the second telescopic member (39) is installed at the bottom of the vertical arm (32) via a support, and the second telescopic member (39) is used to drive the connecting seat (38) to rise and fall.

10. The automatic welding clamping device according to claim 9, characterized in that: The connecting seat (38) is connected to the supporting module (35) via a first adjusting gasket (40).

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