Automatic welding device and welding method thereof

Abstract

The application belongs to the technical field of welding devices, and discloses an automatic welding device, which comprises a supporting table, a supporting frame fixed at the upper end, a welding module arranged at the lower end of the supporting frame, a fixed plate connected to the top of the supporting frame, a first sliding table connected to the lower end of the fixed plate, a second sliding table connected to the lower end of the first sliding table, wherein the second sliding table is vertically distributed with the first sliding table, a second sliding block connected to the lower end of the second sliding table, a guide pipe connected to the lower end of the second sliding block, the upper end of the welding module embedded in the interior of the guide pipe, and a supporting plate fixed at the upper end of the supporting table. The automatic welding device and the welding method thereof can quickly switch the work stations after the welding is completed to realize continuous operation, and can improve the working efficiency of the welding equipment compared with the traditional feeding structure. Moreover, the clamping structure cooperates with the work station switching to simultaneously realize clamping and loosening when the workpiece is switched, without manual operation, thereby improving the use convenience and processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding device, in particular to an automatic welding device and a welding method thereof. BACKGROUND

[0002] The welding device refers to a variety of equipment, tools and auxiliary systems used to realize the connection of workpieces in the welding process. Its core function is to make the welded materials (usually metal or thermoplastic materials) form a combination at the atomic or molecular level through heating, pressing or both, so as to obtain a firm joint.

[0003] However, the existing automatic welding device and welding method still have some problems in use:

[0004] The existing plate welding device for tank production, such as Chinese patent application No. CN219542082U, comprises a welding device main body, a clamping mechanism, a welding gun and a movable sleeve. The bottom end of the welding device main body is provided with a groove, and a double-way screw rod is arranged in the groove. The two ends of the double-way screw rod are provided with movable sleeves, and the top end of the movable sleeve is fixed with a support plate. The support plate is provided with a rotating disc on one side, and the rotating disc is provided with a clamping mechanism on both sides. The central position of the welding device main body is provided with a welding gun.

[0005] However, the existing plate welding device needs to perform feeding and discharging operations on the workpiece after welding, and the welding equipment cannot continue to work during the feeding and discharging process, so that continuous welding operation cannot be realized, and the welding efficiency is low.

[0006] In view of the above problems, the original automatic welding device and welding method are innovatively designed. SUMMARY

[0007] The purpose of the present application is to provide an automatic welding device and a welding method thereof to solve the problem of low overall welding efficiency due to the inability to synchronize welding operation when feeding and discharging workpieces.

[0008] To achieve the above purpose, the present application provides the following technical scheme: an automatic welding device comprising a support table and a support frame fixed at the upper end, wherein the lower end of the support frame is provided with a welding module:

[0009] The top of the support frame is connected with a fixed plate, the lower end of the fixed plate is connected with a first sliding table, the lower end of the first sliding table is connected with a second sliding table, the second sliding table is vertically distributed with the first sliding table, the lower end of the second sliding table is connected with a second sliding block, the lower end of the second sliding block is connected with a guide pipe, and the upper end of the welding module is embedded in the inside of the guide pipe.

[0010] The support table upper end is fixedly connected with a support plate, the support plate upper end penetrates a transmission rod, the transmission rod two ends are connected with a limiting tube, and the limiting tube two ends are connected with a transmission plate, the support table two sides are provided with a welded box, the welded box two sides lower end is fixedly connected with a connecting plate, the connecting plate and the transmission plate are connected with a limiting plate, and the limiting plate is arranged between the connecting plate and the transmission plate.

[0011] The welded box is internally provided with a clamping plate, the clamping plate lower end penetrates to the welded box outside, and the clamping plate lower end penetrates a bidirectional reciprocating screw rod.

[0012] Preferably, the first sliding table is provided with two groups, and the first sliding table is symmetrically distributed on the front and rear sides of the second sliding table, the lower end of the two groups of first sliding tables is slidably connected with a first sliding block, and the lower end of the first sliding block is fixedly connected with the second sliding table.

[0013] The above technical scheme is adopted, and the two groups of first sliding tables can drive the second sliding table to move horizontally, so that the left and right positions of the welding module are adjusted.

[0014] Preferably, the lower end of the second sliding table is slidably connected with a second sliding block, the lower end of the second sliding block is fixedly connected with a guide pipe, the upper end of the guide pipe is fixedly connected with an electric push rod on the inner wall, and the lower end of the electric push rod is fixedly connected with the welding module.

[0015] The above technical scheme is adopted, and the cooperation of the second sliding table and the second sliding block can realize the forward and backward position adjustment of the welding module, and the cooperation of the left and right position adjustment of the first sliding table can be suitable for complex welding requirements. The height of the welding module can be controlled by the electric push rod during welding, so as to be suitable for welding workpieces of different heights.

[0016] Preferably, the welding module two sides are fixedly connected with a guide strip, the guide pipe two sides are provided with a sliding groove, and the guide strip extends into the sliding groove.

[0017] The above technical scheme is adopted, and the guide strip and the sliding groove are slidably connected, so as to improve the lifting stability of the welding module and the stability of the welding module.

[0018] Preferably, the transmission rod is rotatably connected with the support plate, and the support plate is symmetrically distributed on the two sides of the transmission rod, the limiting tube two ends are slidably connected with the transmission plate, the limiting tube is internally provided with a reset spring, and the two ends of the reset spring are respectively fixedly connected with the two groups of transmission plates, the limiting plate is rotatably connected with the end of the transmission plate, and the inner side of the limiting plate is fixedly connected with the connecting plate.

[0019] The above technical scheme is adopted, and the support plate can realize the support of the transmission rod. When the transmission rod rotates, the limiting tube fixedly connected with the two ends can be driven to rotate, and the transmission plate can be driven to rotate synchronously by the limiting tube. Since the end of the transmission plate is connected with the limiting plate, when the transmission plate rotates, the limiting plate, the connecting plate and the welded box are synchronously driven to rotate, so as to realize the adjustment of the positions of the two groups of welded boxes and the switching of the welding double stations.

[0020] Preferably, a power motor is fixed to the front side of the front support plate, and the front shaft end of the power motor is connected to the driving gear, the front end of the transmission rod is connected to the driven gear, and the driving gear is meshed with the driven gear.

[0021] By adopting the above technical solution, the driving gear can be driven to rotate by the power motor, and the driven gear and the transmission rod can be driven to rotate by the power motor. The power motor is a stepping motor, which can realize precise control of the rotation angle and maintain the stability and reliability of the double-station switching.

[0022] Preferably, the clamping plate is designed in a "T" shape, and the clamping plate is slidingly connected to the inner wall of the welding box. The lower end of the clamping plate is connected to the bidirectional reciprocating screw, and the two ends of the bidirectional reciprocating screw pass through the limit plate and the connecting plate, and the two ends of the bidirectional reciprocating screw are fixedly connected to the transmission plate.

[0023] By adopting the above technical solution, stable clamping of the workpiece to be welded can be achieved through the cooperation of the clamping plate and the bidirectional reciprocating screw. When the bidirectional reciprocating screw rotates, it can drive the two sets of clamping plates to move in relative directions or opposite directions. The bidirectional reciprocating screw is connected to the transmission plate. When the relative angle between the transmission plate and the welding box changes, the clamping plate can be driven to move, and the workpiece can be clamped and released synchronously when switching between the two welding stations.

[0024] Preferably, a first guide plate is provided on the front side of the right welding box, and the first guide plate is fixed to the front limit plate of the right welding box, and a second guide plate is provided on the rear side of the left welding box, and the second guide plate is fixed to the rear limit plate of the left welding box;

[0025] The first guide plate and the second guide plate are both designed in an "L" shape, and the first guide plate and the second guide plate are designed in opposite directions. The guide slides are fixed at the upper ends of both sides of the support platform, and a sliding guide rod is provided at the upper end of the guide slide. A guide slider is connected between the lower end of the sliding guide rod and the guide slide, and the two groups of sliding guide rods are respectively slidably connected to the first guide plate and the second guide plate.

[0026] By adopting the above technical solution, through the cooperation of the guide slide and the sliding guide rod, it can be ensured that the angles of the first guide plate and the second guide plate will not change when they move in the horizontal and vertical directions, thereby ensuring that the two sets of welding boxes can remain horizontal when switching work stations, and the L-shaped design of the first guide plate and the second guide plate can avoid movement interference with the transmission plate.

[0027] Preferably, adjustable clamping plates are provided on opposite sides of the two groups of clamping plates, and adjusting bolts pass through both sides of the adjustable clamping plates. The adjusting bolts are rotatably connected to the adjustable clamping plates, and the adjusting bolts are threadedly connected to the clamping plates.

[0028] By adjusting the bolt, the distance between the clamping plate and the adjustable clamping plate, i.e., the distance between the two groups of adjustable clamping plates, can be adjusted when the bolt is rotated, and the reliable clamping of workpieces of different sizes can be realized due to the constant rotation angle of the bidirectional reciprocating screw rod.

[0029] A welding method of an automatic welding device, comprising the following steps:

[0030] Step one, loading the workpiece to be welded, placing the workpiece to be welded in the left welding box, and stacking according to the welding requirements;

[0031] Step two, workpiece loading, driving the welding box to rotate and load, moving the welding box with the workpiece to the lower end of the welding module, and synchronously clamping and positioning during the workpiece transfer process;

[0032] Step three, workpiece welding, after the workpiece is transferred to the lower end of the welding module, the position of the welding module can be adjusted by the first sliding table and the second sliding table to realize workpiece welding;

[0033] Step four, workpiece unloading and station switching, due to the setting of double stations, two groups of welding boxes can realize one station welding and one station synchronous feeding and unloading, after welding, the station is switched, the workpiece after welding is unloaded, and the workpiece to be welded is reloaded to realize continuous operation.

[0034] Compared with the prior art, the automatic welding device and the welding method thereof have the following beneficial effects: by setting a double-station loading structure, the station can be quickly switched after welding to realize continuous operation, compared with the traditional loading structure, the working efficiency of the welding equipment can be improved, and the clamping structure cooperates with the station switching to simultaneously clamp and release during the workpiece switching, without manual operation, improving the use convenience and processing efficiency.

[0035] 1. By setting a station switching structure, two groups of welding boxes can reciprocally rotate to continuously switch stations, while one group of welding boxes is placed to weld workpieces, the other group of welding boxes can be loaded and unloaded inside to facilitate quick loading and unloading after welding, reducing the waiting time for loading and unloading, and greatly improving the welding operation efficiency;

[0036] 2. By cooperating with the clamping structure, when the welding box position is switched, the relative angle between the transmission plate and the welding box changes, and then the reciprocating screw rod drives the two groups of clamping plates to move, when the two groups of welding boxes reciprocally rotate to switch stations, the clamping structure cooperates with them, when the welding box moves to the lower end of the welding module, the workpiece is reliably clamped, and when the welding box moves to the loading and unloading area, the clamping is released. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1It is the whole structure schematic diagram of the present application;

[0038] Figure 2 It is the whole structure schematic diagram of the present application from another angle;

[0039] Figure 3 It is the first slide and the second slide structure schematic diagram of the present application;

[0040] Figure 4 It is the electric push rod and the welding module structure schematic diagram of the present application;

[0041] Figure 5 It is the support plate and the transmission rod structure schematic diagram of the present application;

[0042] Figure 6 It is the transmission plate and the limiting plate structure schematic diagram of the present application;

[0043] Figure 7 It is the power motor and the driving gear structure schematic diagram of the present application;

[0044] Figure 8 It is the limiting tube and the reset spring structure schematic diagram of the present application;

[0045] Figure 9 It is the bidirectional reciprocating wire rod and the clamping plate structure schematic diagram of the present application;

[0046] Figure 10 It is the structure schematic diagram of the second embodiment of the present application.

[0047] In the figure: 1, support table; 2, support frame; 3, fixed plate; 4, first slide; 5, first slide block; 6, second slide; 7, second slide block; 8, guide tube; 9, electric push rod; 10, welding module; 11, guide bar; 12, support plate; 13, transmission rod; 14, limiting tube; 15, transmission plate; 16, welding box; 17, limiting plate; 18, connecting plate; 19, bidirectional reciprocating wire rod; 20, clamping plate; 21, first guide plate; 22, sliding guide rod; 23, guide slide; 24, second guide plate; 25, power motor; 26, driving gear; 27, driven gear; 28, reset spring; 29, adjustable clamping plate; 30, adjusting bolt. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] Embodiment one, please refer to Figures 1-9The application provides a technical scheme: an automatic welding device, comprising a support table 1 and a support frame 2 fixed at the upper end, a welding module 10 is arranged at the lower end of the support frame 2, a fixed plate 3 is connected to the top of the support frame 2, a first sliding table 4 is connected to the lower end of the fixed plate 3, a second sliding table 6 is connected to the lower end of the first sliding table 4, the second sliding table 6 is distributed vertically to the first sliding table 4, a second sliding block 7 is connected to the lower end of the second sliding table 6, a guide pipe 8 is connected to the lower end of the second sliding block 7, and the upper end of the welding module 10 is embedded in the inside of the guide pipe 8; two groups of the first sliding tables 4 are arranged, and the first sliding tables 4 are symmetrically distributed on the front and back sides of the second sliding table 6, the lower ends of the two groups of the first sliding tables 4 are slidably connected with first sliding blocks 5, and the lower ends of the first sliding blocks 5 are fixed with the second sliding table 6; the lower end of the second sliding table 6 is slidably connected with the second sliding block 7, the lower end of the second sliding block 7 is fixed with the guide pipe 8, an electric push rod 9 is fixed to the inner wall of the upper end of the guide pipe 8, and the lower end of the electric push rod 9 is fixed with the welding module 10; guide strips 11 are fixed on the two sides of the welding module 10, and grooves are formed in the two sides of the guide pipe 8, and the guide strips 11 extend into the grooves. The first sliding table 4 and the second sliding table 6 are high-precision electric sliding tables, and cooperate with a PLC control structure, so that the position and the movement track of the welding module 10 can be accurately controlled, and the welding quality is improved. During welding, the first sliding block 5 and the second sliding table 6 are controlled to move horizontally by the first sliding table 4, when the second sliding table 6 moves, the second sliding block 7, the guide pipe 8 and the welding module 10 and other structures can be driven to move synchronously, and the left and right positions of the welding module 10 are adjusted; meanwhile, the second sliding table 6 can drive the second sliding block 7 to move forward and backward, and the forward and backward position adjustment of the welding module 10 can be realized. In the welding process, in order to adapt to the welding of plate workpieces with different thicknesses, a height adjusting structure is arranged, the welding module 10 is controlled to ascend and descend in the guide pipe 8 by the electric push rod 9, the guide strip 11 slides in the groove during the ascending and descending process of the welding module 10, high stability is maintained, and deviation is avoided.

[0050] The support table 1 is fixed with support plates 12 at the upper end, the support plates 12 are penetrated by transmission rods 13 at the upper end, the transmission rods 13 are connected with limiting tubes 14 at both ends, the limiting tubes 14 are connected with transmission plates 15 at both ends, the support table 1 is provided with welded boxes 16 at both sides, the welded boxes 16 are fixedly connected with connecting plates 18 at the lower end at both sides, the connecting plates 18 are connected with limiting plates 17 between the transmission plates 15; the transmission rods 13 are rotationally connected with the support plates 12, and the support plates 12 are symmetrically distributed at both sides of the transmission rods 13, the limiting tubes 14 are slidingly connected with the transmission plates 15 at both ends; the transmission plates 15 are rotationally connected with the limiting plates 17 at the end, and the limiting plates 17 are fixedly connected with the connecting plates 18 at the inner side. The front end of the support plate 12 is fixed with a power motor 25 at the front side, and the power motor 25 is connected with a driving gear 26 at the front shaft end, the transmission rod 13 is connected with a driven gear 27 at the front end, and the driving gear 26 is meshingly connected with the driven gear 27. Two groups of support plates 12 are used to support and install the transmission rod 13, and bearings are connected between the support plates 12 and the transmission rod 13 to keep smooth and stable rotation. The transmission rod 13 is connected with the limiting tube 14 at both ends, the limiting tube 14 drives the transmission plate 15 slidingly connected at both ends to rotate synchronously when the limiting tube 14 rotates, the transmission rod 13 drives the limiting tube 14 and the transmission plate 15 to rotate synchronously, the limiting plate 17 connected at the end of the transmission plate 15 moves and rotates around the transmission rod 13; the limiting plate 17 is connected with the welded box 16 by the connecting plate 18, and drives the two groups of welded boxes 16 to rotate synchronously, the two groups of welded boxes 16 can rotate to change the position, so as to realize the switching of the double stations. The power motor 25 drives the driving gear 26 to rotate, the driving gear 26 drives the driven gear 27 and the transmission rod 13 to reciprocate, the power motor 25 is a stepping motor, which can accurately control the rotation angle and has a self-locking function, and can realize accurate switching of the station and reliable positioning of the double stations. When initially used, the plate to be welded is placed in the lower welded box 16 at the left side, after the placement is completed, the transmission rod 13 rotates to drive the left welded box 16 to move to the right and upward, and moves to the lower side of the welding module 10 for welding, and the welded box 16 at the upper end of the right side initially rotates to the left side and waits for feeding, after the welding is completed, the transmission rod 13 reversely rotates, the station is switched again, the plate after welding is discharged and re-fed, the waiting time for feeding and discharging is reduced, and the welding work efficiency is improved.

[0051] The welding box 16 is internally provided with a clamping plate 20, the lower end of the clamping plate 20 penetrates to the outside of the welding box 16, and the lower end of the clamping plate 20 penetrates the bidirectional reciprocating screw rod 19; the limiting tube 14 is internally provided with a reset spring 28, and the two ends of the reset spring 28 are respectively fixed with the two groups of transmission plates 15; the clamping plate 20 is designed in a “T” shape structure, and the clamping plate 20 is slidably connected with the inner wall of the welding box 16, the lower end of the clamping plate 20 is connected with the bidirectional reciprocating screw rod 19, the two ends of the bidirectional reciprocating screw rod 19 penetrate the limiting plate 17 and the connecting plate 18, and the two ends of the bidirectional reciprocating screw rod 19 are fixedly connected with the transmission plate 15; the right side of the welding box 16 is provided with a first guide plate 21, and the first guide plate 21 is fixed with the right side of the welding box 16; the left side of the welding box 16 is provided with a second guide plate 24, and the second guide plate 24 is fixed with the left side of the welding box 16; the first guide plate 21 and the second guide plate 24 are designed in an “L” shape, and the directions of the first guide plate 21 and the second guide plate 24 are opposite; the support table 1 is fixed with guide sliding tables 23 on the upper ends of the two sides, the guide sliding tables 23 are provided with sliding guide rods 22 on the upper ends, guide sliding blocks are connected between the lower ends of the sliding guide rods 22 and the guide sliding tables 23, and the two groups of sliding guide rods 22 are slidably connected with the first guide plate 21 and the second guide plate 24 respectively. In order to keep the welding box 16 horizontal during the work position switching, welding and feeding and discharging operations, the limiting structure is arranged to avoid the deviation of the welding box 16, the first guide plate 21 and the second guide plate 24 are connected with the two groups of limiting plates 17 respectively, the limiting plate 17 is fixed with the welding box 16 through the connecting plate 18, the first guide plate 21 and the second guide plate 24 are in a fixed state with the two groups of welding boxes 16, the first guide plate 21 and the second guide plate 24 are kept horizontal by limiting the deviation of the first guide plate 21 and the second guide plate 24 through the cooperation of the sliding guide rod 22 and the guide sliding table 23, the two groups of guide plates are arranged on the two sides of the welding box 16 to avoid the movement interference during the work position switching, and the sliding guide rod 22 can slide horizontally above the guide sliding table 23, and the first guide plate 21 and the second guide plate 24 can slide up and down outside the sliding guide rod 22 during the work position switching.

[0052] In order to avoid the deviation of the plate during the welding process, the clamping structure is designed to realize the positioning of the plate. When the two groups of welding boxes 16 are switched, the relative angle between the welding box 16 and the transmission plate 15 changes, the bidirectional reciprocating screw rod 19 is driven to rotate by the transmission plate 15, the two groups of clamping plates 20 are driven to move in opposite directions or opposite directions by the bidirectional reciprocating screw rod 19, the clamping and loosening of the plate are realized, the clamping plate 20 clamps when the two groups of welding boxes 16 move downward to prepare for welding, and the clamping plate 20 loosens the clamping of the plate when the welding box 16 moves to the left feeding and discharging area after the welding is completed, so that the operation is more convenient and manual control is not required.

[0053] Example two, please refer to Figure 10The present invention provides a technical solution. This embodiment differs from the first embodiment in that the clamping structure has an adjustable and reliable clamping range. Adjustable clamping plates 29 are provided on opposite sides of the two sets of clamping plates 20. Adjustment bolts 30 extend through both sides of the adjustable clamping plates 29. The adjustment bolts 30 are rotatably connected to the adjustable clamping plates 29, and the adjustment bolts 30 are threadedly connected to the clamping plates 20. To facilitate welding and clamping of plates of different sizes, the adjustable clamping plates 29 are provided on opposite sides of the two sets of clamping plates 20. Because the bidirectional reciprocating screw 19 of the welding box 16 can drive the range of motion of the clamping plates 20 to remain constant during station switching, if welding of plates smaller than the standard size is required, clamping can be achieved using the adjustable clamping plates 29. The spacing between the adjustable clamping plates 29 and the clamping plates 20 can be adjusted by rotating the adjustment bolts 30. When the bidirectional reciprocating screw 19 rotates the same angle, the spacing between the two sets of adjustable clamping plates 29 is smaller, enabling clamping of smaller workpieces.

[0054] A welding method of an automatic welding device comprises the following steps:

[0055] Step 1: Loading the workpieces to be welded: Place the workpieces to be welded inside the left welding box 16 and stack them according to welding requirements;

[0056] Step 2: Loading the workpiece: driving the welding box 16 to rotate and load the workpiece, transferring the welding box 16 with the workpiece placed thereon to the lower end of the welding module 10, and achieving clamping and positioning simultaneously during the workpiece transfer process;

[0057] Step 3: Workpiece welding: After the workpiece is transferred to the bottom of the welding module 10, the position of the welding module 10 can be adjusted using the first slide 4 and the second slide 6 to achieve workpiece welding;

[0058] Step 4: unloading the workpiece and switching the workstations. Due to the double workstation arrangement, the two welding boxes 16 can realize simultaneous unloading and unloading at one workstation while welding is completed. After welding is completed, the workstations are switched, the welded workpieces are unloaded, and the unwelded workpieces are loaded again, thus realizing continuous operation.

[0059] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device, comprising a support platform (1) and a support frame (2) fixed at the upper end, a welding module (10) being provided at the lower end of the support frame (2), characterized in that: The top of the support frame (2) is connected to the fixed plate (3), the lower end of the fixed plate (3) is connected to the first slide (4), the lower end of the first slide (4) is connected to the second slide (6), the second slide (6) is vertically distributed with the first slide (4), the lower end of the second slide (6) is connected to the second slider (7), the lower end of the second slider (7) is connected to the guide tube (8), and the upper end of the welding module (10) is embedded in the guide tube (8); The upper end of the support platform (1) is fixed with a support plate (12), the upper end of the support plate (12) passes through the transmission rod (13), the two ends of the transmission rod (13) are connected to the limit tube (14), and the two ends of the limit tube (14) are connected to the transmission plate (15), welding boxes (16) are provided on both sides of the support platform (1), and connecting plates (18) are fixed at the lower ends of both sides of the welding box (16), and a limit plate (17) is connected between the connecting plate (18) and the transmission plate (15), the transmission rod (13) is rotatably connected to the support plate (12), and the support plates (12) are symmetrically distributed on both sides of the transmission rod (13), the two ends of the limit tube (14) are slidably connected to the transmission plate (15), a return spring (28) is provided inside the limit tube (14), and the two ends of the return spring (28) are respectively fixed to the two groups of transmission plates (15), the end limit plate (17) of the transmission plate (15) is rotatably connected, and the inner side of the limit plate (17) is fixed to the connection plate (18); A clamping plate (20) is provided inside the welding box (16), the lower end of the clamping plate (20) extends to the outside of the welding box (16), and the lower end of the clamping plate (20) extends through the bidirectional reciprocating screw (19), the clamping plate (20) is designed in a "T"-shaped structure, and the clamping plate (20) is slidably connected to the inner wall of the welding box (16), the lower end of the clamping plate (20) is connected to the bidirectional reciprocating screw (19), both ends of the bidirectional reciprocating screw (19) extend through the limiting plate (17) and the connecting plate (18), and both ends of the bidirectional reciprocating screw (19) are fixedly connected to the transmission plate (15); A first guide plate (21) is provided on the front side of the welding box (16) on the right side, and the first guide plate (21) is fixed to the front limit plate (17) of the welding box (16) on the right side. A second guide plate (24) is provided on the rear side of the welding box (16) on the left side, and the second guide plate (24) is fixed to the rear limit plate (17) of the welding box (16) on the left side. The first guide plate (21) and the second guide plate (24) are both designed in an "L" shape, and the first guide plate (21) and the second guide plate (24) are designed in opposite directions. Guide slides (23) are fixed to the upper ends of both sides of the support platform (1), and sliding guide rods (22) are provided on the upper ends of the guide slides (23). A guide slider is connected between the lower end of the sliding guide rod (22) and the guide slide (23). The two groups of sliding guide rods (22) are slidably connected to the first guide plate (21) and the second guide plate (24) respectively.

2. The automatic welding device according to claim 1, characterized in that: Two groups of the first slides (4) are provided, and the first slides (4) are symmetrically distributed on both sides of the front and rear of the second slide (6). The lower ends of the two groups of the first slides (4) are slidably connected to the first slider (5), and the lower ends of the first slider (5) are fixed to the second slide (6).

3. The automatic welding device according to claim 2, characterized in that: The lower end of the second slide (6) is slidably connected to the second slider (7), the lower end of the second slider (7) is fixed to the guide tube (8), an electric push rod (9) is fixed to the inner wall of the upper end of the guide tube (8), and the lower end of the electric push rod (9) is fixed to the welding module (10).

4. The automatic welding device according to claim 3, characterized in that: Guide bars (11) are fixed on both sides of the welding module (10), and chute grooves are provided on both sides of the guide tube (8), and the guide bars (11) extend into the interior of the chute grooves.

5. The automatic welding device according to claim 1, characterized in that: A power motor (25) is fixed to the front side of the front support plate (12), and the front shaft end of the power motor (25) is connected to a driving gear (26). The front end of the transmission rod (13) is connected to a driven gear (27), and the driving gear (26) is meshed with the driven gear (27).

6. The automatic welding device according to claim 1, characterized in that: Adjustable clamping plates (29) are provided on opposite sides of the two groups of clamping plates (20), and adjusting bolts (30) pass through both sides of the adjustable clamping plates (29). The adjusting bolts (30) are rotatably connected to the adjustable clamping plates (29), and the adjusting bolts (30) are threadedly connected to the clamping plates (20).

7. A welding method according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Loading the workpiece to be welded, placing the workpiece to be welded inside the left welding box (16), and stacking them according to welding requirements; Step 2: Loading the workpiece, driving the welding box (16) to rotate and load the workpiece, transferring the welding box (16) with the workpiece placed thereon to the lower end of the welding module (10), and achieving clamping and positioning synchronously during the workpiece transfer process; Step 3: welding the workpiece. After the workpiece is transferred to the bottom of the welding module (10), the position of the welding module (10) can be adjusted using the first slide (4) and the second slide (6) to achieve workpiece welding. Step 4: unloading the workpiece and switching the workstations. Due to the double workstations, the two welding boxes (16) can realize simultaneous unloading and unloading of the workpieces at one workstation while welding is completed. After welding is completed, the workstations are switched, the workpieces after welding are unloaded, and the unwelded workpieces are loaded again, thereby realizing continuous operation.

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