A welding fixture for metal plates and a method of using the same

Abstract

The invention relates to the technical field of plate welding, and discloses a welding fixture for metal plates and a method for using the same, comprising a bracket, a mounting plate fixedly connected to the top of the bracket, and two electric telescopic rods fixedly connected to the inner wall of the mounting plate. Before use, two plates to be welded are placed on the top of a ball bearing, and the power of the electric telescopic rods at both ends is turned on. The electric telescopic rods at both ends drive the corresponding push plates and the plates to move toward the center of the mounting plate, and gear one meshes and rotates along the outer wall of the support rod, and gear one drives a rolling wheel to rotate clockwise through gear two. The plate placed on the top of the ball bearing is pushed by the two rolling wheels and displaced under the support of the ball bearing, forcing one end of the plate to fit with the side of the push plate. Due to the square shape of the plate, the welding surfaces of the two plates are kept flat and butted, thereby realizing autonomous adjustment of the angle of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of plate welding equipment, and in particular to a welding fixture for metal plates and a use method thereof. Background Art

[0002] In modern manufacturing, welding technology occupies an extremely important position. The development of modern welding technology and the improvement of process have not only effectively improved welding efficiency, but also greatly improved the strength, precision and life of welded components. The application scope of welding technology is becoming wider and wider. The emergence of welding robots has made welding industrialized and automated, while greatly reducing the labor intensity of welding and greatly promoting the promotion of welding technology.

[0003] Before welding, the two metal plates need to be spliced ​​together. However, when splicing the two metal plates, it is necessary to manually fine-tune the metal plates so that the two metal plates meet the welding conditions. Due to the heavy weight of the metal plates, manual adjustment is difficult, which affects the splicing and alignment of the two metal plates and causes inconvenience in welding. In view of the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a welding fixture for metal plates, comprising a bracket, a mounting plate fixedly connected to the top of the bracket, two electric telescopic rods fixedly connected to the inner wall of the mounting plate, a push plate fixedly connected to the other ends of the two electric telescopic rods, a mounting square tube fixedly connected to the side wall of the pushing plate, and a correction component fixedly connected to the inner wall of the mounting square tube;

[0005] The steering mechanism includes a support frame fixedly connected to the side wall of the mounting square tube, a plurality of ball bearings are rotatably connected to the top of the support frame, two mounting grooves are provided on the top of the support frame, gear 1 is rotatably connected to the inner walls of the two mounting grooves, gear 2 is rotatably connected to the inner wall of the mounting groove, a rolling wheel is fixedly connected to the side wall of gear 2, and an adjustment component is fixedly connected to the side wall of the support frame;

[0006] The limiting mechanism includes a gear rod fixedly connected to the top of the mounting plate, a support rod fixedly connected to the top of the mounting plate, and a driving gear rod fixedly connected to the inner wall of the mounting plate. Before use, place the two plates to be welded on the top of the ball, such as Figure 2 The electric telescopic rods at both ends are in the middle G state, and the power supply is turned on. The electric telescopic rods at both ends drive the corresponding push plates and the plates to move toward the center of the mounting plate. During this process, gear 1 meshes and rotates along the outer wall of the support rod, and gear 1 drives the rolling wheel to rotate clockwise through gear 2, showing as follows Figure 4The plate placed on top of the ball is pushed by the two rolling wheels and displaced under the support of the ball, forcing one end of the plate to fit with the side of the push plate. Due to the square shape of the plate, when one end of the plate is parallel to the equipment, the other end will also be parallel. Through the application of the above components, the two parallel plates are in contact, the welding surfaces of the two plates are kept flat and connected, and the angle of the equipment can be adjusted autonomously.

[0007] Preferably, the correction component includes an L-shaped gear rod slidably connected to the inner wall of the mounting square tube, a spring telescopic rod is fixedly connected to the side wall of the L-shaped gear rod, and a clamping plate is fixedly connected to the end of the spring telescopic rod away from the L-shaped gear rod. A ball and lateral pushing design is adopted to support the plate by the ball, thereby reducing the contact area between the plate and the equipment, greatly reducing the contact area between the plate and the equipment, and reducing the friction between the plate and the equipment, thereby avoiding excessive friction when various components push the plate to move, causing wear on the oxide layer of the outer wall of the plate. In addition, through the use of spring telescopic rods, the equipment can meet the clamping requirements of various specifications of plates, thereby improving the application range of the equipment.

[0008] Preferably, the correction component also includes a driving gear rotatably connected to the inner wall of the mounting square tube, the bottom of the driving gear is fixedly connected to a sector gear 1, and the bottom of the mounting square tube is fixedly connected to an L-shaped round rod.

[0009] Preferably, the correction assembly also includes gear three rotatably connected to one end of the L-shaped round rod away from the mounting square tube, the outer wall of gear one is meshingly connected with the outer wall of gear rod one, and the outer wall of gear one is meshingly connected with the outer wall of gear two.

[0010] Preferably, the correction component also includes a sector gear two fixedly connected to the side wall of gear three, the side wall of sector gear two is meshingly connected with the side wall of sector gear one, and the outer wall of gear three is meshingly connected with the outer wall of the driving gear rod. Utilizing the above characteristics of the movement of the installed square tube, a correction component is arranged inside the equipment. When the installed square tube moves laterally, gear three will contact the outer wall of the driving gear rod, forcing gear three to rotate. Gear three drives the driving gear to rotate through sector gear two and sector gear one, and the driving gear drives the clamping plate to move toward the center of the installed square tube through the L-shaped gear rods on both sides. If the plate is not in the center position at this time, the offset end of the plate will first contact the inner wall of the clamping plate, and the clamping plate that contacts first will apply a lateral force to the side of the plate, forcing the clamping plate to drive the plate to move toward the center of the installed square tube. Through the application of the above components, it is ensured that the plate is in the center position of the equipment before welding.

[0011] Preferably, the adjustment assembly includes a support bracket fixedly connected to the side wall of the support bracket, a plurality of rotation grooves are opened on the side wall of the support bracket, an L-shaped square rod is rotatably connected to the inner wall of the rotation groove, and a contact plate is fixedly connected to one end of the L-shaped square rod away from the support bracket. The multiple contact plates provide a supporting force for the welding seam of the plate to avoid small fluctuations between the two plates due to the pressure of the welding machine during subsequent welding, which affects the welding effect.

[0012] Preferably, the adjustment component also includes a roller rotatably connected to the inner wall of the L-shaped square rod, a limiting column is fixedly connected to the inner wall of the rotating groove, and a plurality of inclined blocks are fixedly connected to the side wall of the support bracket. When the above-mentioned equipment is in operation, the support brackets at both ends will be close to each other, and inclined blocks and rollers are arranged inside the equipment. Before the two plates contact, the corresponding inclined blocks will contact the corresponding rollers. The rollers are affected by the inclined surfaces of the inclined blocks and will force the L-shaped square rod to rotate upward with the connection point as the center. When the two plates are spliced, multiple contact plates will contact the bottoms of the two plates, and the splicing positions of the two plates will be adjusted in height to ensure that the plates are equal in height.

[0013] A method for using a welding fixture for metal plates comprises the following steps:

[0014] S1: Before use, place the two plates to be welded on the top of the ball bearing, and connect the power of the electric telescopic rods at both ends. The electric telescopic rods at both ends drive the corresponding push plates and plates to move toward the center of the mounting plate;

[0015] S2: Gear 1 meshes and rotates along the outer wall of gear rod 1, and gear 1 drives the rolling wheel to rotate clockwise through gear 2, and the plate placed on the top of the ball is displaced by the two rolling wheels;

[0016] S3: When the square tube is installed and moved horizontally, gear three will contact the outer wall of the driving gear rod, forcing gear three to rotate. Gear three drives the driving gear to rotate through sector gear two and sector gear one, and the driving gear drives the clamping plate to move toward the center of the square tube through the L-shaped gear rods on both sides.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention utilizes the fact that most plates have a square shape, and a steering mechanism is provided inside the device. Before use, two plates to be welded are placed on top of the ball bearings, such as Figure 2 The electric telescopic rods at both ends are in the middle G state, and the power supply is turned on. The electric telescopic rods at both ends drive the corresponding push plates and the plates to move toward the center of the mounting plate. During this process, gear 1 meshes and rotates along the outer wall of the support rod, and gear 1 drives the rolling wheel to rotate clockwise through gear 2, showing as follows Figure 4The plate placed on top of the ball is pushed by the two rolling wheels and displaced under the support of the ball, forcing one end of the plate to fit with the side of the push plate. Due to the square shape of the plate, when one end of the plate is parallel to the equipment, the other end will also be parallel. Through the application of the above components, the two parallel plates are in contact, the welding surfaces of the two plates are kept flat and connected, and the angle of the equipment can be adjusted autonomously.

[0019] (2) The present invention utilizes the above-mentioned characteristics of the movement of the installed square tube and is provided with a correction component inside the equipment. When the installed square tube moves laterally, gear three will contact the outer wall of the driving gear rod, forcing gear three to rotate. Gear three drives the driving gear to rotate through fan gear two and fan gear one, and the driving gear drives the clamping plate to move toward the center of the installed square tube through the L-shaped gear rods on both sides. If the plate is not in the center position at this time, the offset end of the plate will first contact the inner wall of the clamping plate, and the clamping plate that contacts first will apply a lateral force to the side of the plate, forcing the clamping plate to drive the plate to move toward the center of the installed square tube. Through the application of the above-mentioned components, it is ensured that the plate is in the center position of the equipment before welding.

[0020] (3) The present invention adopts a ball and lateral push design to support the plate through the ball, thereby reducing the contact area between the plate and the equipment, greatly reducing the contact area between the plate and the equipment, reducing the friction between the plate and the equipment, and avoiding excessive friction when various components push the plate to move, causing wear on the oxide layer on the outer wall of the plate. In addition, through the use of a spring telescopic rod, the device can meet the requirements of plate clamping of various specifications, thereby increasing the application range of the device.

[0021] (4) The present invention utilizes the characteristic that the supporting brackets at both ends will approach each other when the above-mentioned equipment is in operation. Inclined blocks and rollers are arranged inside the equipment. Before the two plates come into contact, the corresponding inclined blocks will come into contact with the corresponding rollers. The rollers will be affected by the inclined surfaces of the inclined blocks and will force the L-shaped square rods to rotate upward with the connection points as the center. When the two plates are spliced, multiple contact plates will come into contact with the bottoms of the two plates to adjust the height of the splicing positions of the two plates to ensure that the plates are equal in height. In addition, multiple contact plates provide a supporting force for the welding seams of the plates to avoid small fluctuations in the two plates due to the pressure of the welding machine during subsequent welding, thereby affecting the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the working state of the overall structure of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the steering mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram;

[0027] Figure 5 It is a cross-sectional schematic diagram of the correction component of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal components of the correction component of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of B;

[0030] Figure 8 It is a cross-sectional schematic diagram of the adjustment assembly of the present invention;

[0031] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of middle C;

[0032] Fig.10 It is a schematic diagram of the working process of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] In the figure: 1. bracket; 11. mounting plate; 12. electric telescopic rod; 13. pushing plate; 14. mounting square tube; 2. steering mechanism; 21. support frame; 22. ball bearing; 23. mounting groove; 24. gear one; 25. gear two; 26. rolling wheel; 3. limiting mechanism; 31. gear rod one; 32. support rod; 33. driving gear rod; 4. correction assembly; 41. L-shaped gear rod; 42. spring telescopic rod; 43. clamping plate; 44. driving gear; 45. sector gear one; 46. L-shaped round rod; 47. gear three; 48. sector gear two; 5. adjustment assembly; 51. supporting bracket; 52. rotating groove; 53. L-shaped square rod; 54. roller; 55. contact plate; 56. limiting column; 57. inclined block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figure 1 - Figure 4 The present invention is a welding fixture for metal plates, comprising a bracket 1, a mounting plate 11 is fixedly connected to the top of the bracket 1, two electric telescopic rods 12 are fixedly connected to the inner wall of the mounting plate 11, a push plate 13 is fixedly connected to the other end of the two electric telescopic rods 12, a mounting square tube 14 is fixedly connected to the side wall of the pushing plate 13, and a correction component 4 is fixedly connected to the inner wall of the mounting square tube 14;

[0037] The steering mechanism 2 includes a support frame 21 fixedly connected to the side wall of the mounting square tube 14, a plurality of balls 22 are rotatably connected to the top of the support frame 21, two mounting grooves 23 are provided on the top of the support frame 21, gears 1 24 are rotatably connected to the inner walls of the two mounting grooves 23, gears 25 are rotatably connected to the inner walls of the mounting grooves 23, rolling wheels 26 are fixedly connected to the side walls of the gears 25, and an adjustment component 5 is fixedly connected to the side walls of the support frame 21;

[0038] The limiting mechanism 3 includes a gear rod 31 fixedly connected to the top of the mounting plate 11, a support rod 32 fixedly connected to the top of the mounting plate 11, and a driving gear rod 33 fixedly connected to the inner wall of the mounting plate 11. Before use, place the two plates to be welded on the top of the ball 22, as shown in FIG. Figure 2 The electric telescopic rods 12 at both ends are in the middle G state, and the power supply is turned on. The electric telescopic rods 12 at both ends drive the corresponding push plates 13 and the plate to move toward the center of the mounting plate 11. During this process, the gear 1 24 meshes and rotates along the outer wall of the support rod 32, and the gear 1 24 drives the rolling wheel 26 to rotate clockwise through the gear 2 25, presenting as shown in FIG. Figure 4 The plate placed on top of the ball 22 is pushed by the two rolling wheels 26 and displaced under the support of the ball 22, forcing one end of the plate to fit with the side of the push plate 13. Due to the square shape of the plate, when one end of the plate is parallel to the equipment, the other end will also be parallel. Through the application of the above components, the two parallel plates are in contact, the welding surfaces of the two plates are kept flat and connected, and the angle of the equipment can be adjusted autonomously.

[0039] For example 2, please refer to Figure 5 - Fig.10The present invention is a welding fixture for metal plates. On the basis of the first embodiment, the correction component 4 includes an L-shaped toothed rod 41 slidably connected to the inner wall of the mounting square tube 14, and a spring telescopic rod 42 is fixedly connected to the side wall of the L-shaped toothed rod 41. The end of the spring telescopic rod 42 away from the L-shaped toothed rod 41 is fixedly connected to a clamping plate 43. The design of ball bearings 22 and lateral displacement is adopted. The plate is supported by the ball bearings 22, and the contact area between the plate and the equipment is reduced, which greatly reduces the contact area between the plate and the equipment, reduces the friction between the plate and the equipment, and avoids excessive friction when various components push the plate to move, causing the oxide layer on the outer wall of the plate to wear. In addition, through the application of the spring telescopic rod 42, the equipment can meet the clamping of plates of various specifications, thereby improving the application range of the equipment.

[0040] The correction component 4 also includes a driving gear 44 rotatably connected to the inner wall of the mounting square tube 14 , a sector gear 45 is fixedly connected to the bottom of the driving gear 44 , and an L-shaped round rod 46 is fixedly connected to the bottom of the mounting square tube 14 .

[0041] The correction assembly 4 also includes a gear three 47 rotatably connected to the end of the L-shaped round rod 46 away from the mounting square tube 14, the outer wall of the gear one 24 is meshedly connected with the outer wall of the gear rod one 31, and the outer wall of the gear one 24 is meshedly connected with the outer wall of the gear two 25.

[0042] The correction component 4 also includes a sector gear 2 48 fixedly connected to the side wall of the gear 3 47. The side wall of the sector gear 2 48 is meshed with the side wall of the sector gear 1 45. The outer wall of the gear 3 47 is meshed with the outer wall of the driving gear rod 33. By utilizing the above-mentioned characteristics of the movement of the installation square tube 14, a correction component 4 is arranged inside the device. When the installation square tube 14 moves horizontally, the gear 3 47 will contact the outer wall of the driving gear rod 33, forcing the gear 3 47 to rotate. The gear 3 47 rotates through the sector gear 2 48 and the sector gear 1 45. Wheel 1 45 drives the driving gear 44 to rotate, and the driving gear 44 drives the clamping plate 43 to move toward the center of the installation square tube 14 through the L-shaped gear rods 41 on both sides. If the plate is not in the center position at this time, the offset end of the plate will first contact the inner wall of the clamping plate 43, and the clamping plate 43 that contacts first will apply a lateral force to the side of the plate, forcing the clamping plate 43 to drive the plate to move toward the center of the installation square tube 14. Through the application of the above components, it is ensured that the plate is in the center position of the equipment before welding.

[0043] The adjustment component 5 includes a support bracket 51 fixedly connected to the side wall of the support frame 21, and a plurality of rotation grooves 52 are opened on the side wall of the support bracket 51. An L-shaped square rod 53 is rotatably connected to the inner wall of the rotation groove 52. The end of the L-shaped square rod 53 away from the support bracket 51 is fixedly connected to a contact plate 55. The multiple contact plates 55 provide a supporting force for the welding seam of the plate to avoid small fluctuations between the two plates due to the pressure of the welding machine during subsequent welding, which affects the welding effect.

[0044] The adjustment component 5 also includes a roller 54 rotatably connected to the inner wall of the L-shaped square rod 53, a limiting column 56 is fixedly connected to the inner wall of the rotating groove 52, and a plurality of inclined blocks 57 are fixedly connected to the side wall of the support bracket 51. When the above-mentioned equipment is in operation, the support brackets 51 at both ends will be close to each other. Inclined blocks 57 and rollers 54 are arranged inside the equipment. Before the two plates contact, the corresponding inclined blocks 57 will contact the corresponding rollers 54. The rollers 54 are affected by the inclined surfaces of the inclined blocks 57 and will force the L-shaped square rod 53 to rotate upward with the connection point as the center. When the two plates are spliced, multiple contact plates 55 will contact the bottoms of the two plates to adjust the height of the splicing position of the two plates to ensure that the plates are equal in height.

[0045] The method of using the welding fixture includes the following steps:

[0046] S1: Before use, place the two plates to be welded on top of the ball bearing 22, and turn on the power of the electric telescopic rods 12 at both ends. The electric telescopic rods 12 at both ends drive the corresponding push plates 13 and the plates to move toward the center of the mounting plate 11;

[0047] S2: Gear 1 24 meshes and rotates along the outer wall of gear rod 1 31, and gear 1 24 drives the rolling wheel 26 to rotate clockwise through gear 2 25, and the plate placed on the top of the ball 22 is pushed by the two rolling wheels 26 to move;

[0048] S3: When the installation square tube 14 moves horizontally, gear three 47 will contact the outer wall of the driving gear rod 33, forcing gear three 47 to rotate. Gear three 47 drives the driving gear 44 to rotate through sector gear two 48 and sector gear one 45, and the driving gear 44 drives the clamping plate 43 to move toward the center of the installation square tube 14 through the L-shaped gear rods 41 on both sides.

[0049] A specific application of this embodiment is: before use, two plates to be welded are placed on top of the ball 22, such as Figure 2The electric telescopic rods 12 at both ends are in the middle G state, and the power supply is turned on. The electric telescopic rods 12 at both ends drive the corresponding push plates 13 and the plate to move toward the center of the mounting plate 11. During this process, the gear 1 24 meshes and rotates along the outer wall of the support rod 32, and the gear 1 24 drives the rolling wheel 26 to rotate clockwise through the gear 2 25, presenting as shown in FIG. Figure 4 The plate placed on top of the ball 22 is pushed by the two rolling wheels 26 and displaced under the support of the ball 22, forcing one end of the plate to fit with the side of the push plate 13. Due to the square shape of the plate, when one end of the plate is parallel to the equipment, the other end will also be parallel. Through the application of the above components, the two parallel plates are in contact, the welding surfaces of the two plates are kept flat and connected, and the angle of the equipment can be adjusted autonomously.

[0050] Utilizing the above-mentioned characteristics of the movement of the installed square tube 14, a correction component 4 is provided inside the equipment. When the installed square tube 14 moves laterally, the gear three 47 will contact the outer wall of the driving gear rod 33, forcing the gear three 47 to rotate. The gear three 47 drives the driving gear 44 to rotate through the sector gear two 48 and the sector gear one 45, and the driving gear 44 drives the clamping plate 43 to move toward the center of the installed square tube 14 through the L-shaped gear rods 41 on both sides. If the plate is not in the center position at this time, the offset end of the plate will first contact the inner wall of the clamping plate 43, and the clamping plate 43 that contacts first will apply a lateral force to the side of the plate, forcing the clamping plate 43 to drive the plate to move toward the center of the installed square tube 14. Through the application of the above-mentioned components, it is ensured that the plate is in the center position of the equipment before welding. The ball 22 and the lateral displacement design are adopted to support the plate through the ball 22, thereby reducing the contact area between the plate and the equipment, greatly reducing the contact area between the plate and the equipment, and reducing the contact area between the plate and the equipment. The friction of the equipment is to prevent various components from causing excessive friction to cause wear of the oxide layer on the outer wall of the plate when pushing the plate to move. In addition, through the application of the spring telescopic rod 42, the equipment can meet the requirements of plate clamping of various specifications, thereby improving the application range of the equipment. When the above-mentioned equipment is running, the supporting brackets 51 at both ends will be close to each other. Inclined blocks 57 and rollers 54 are arranged inside the equipment. Before the two plates contact, the corresponding inclined blocks 57 will contact the corresponding rollers 54. The rollers 54 are affected by the inclined surfaces of the inclined blocks 57, which will force the L-shaped square rods 53 to rotate upward with the connection point as the center. When the two plates are spliced, multiple contact plates 55 will contact the bottoms of the two plates to adjust the height of the splicing positions of the two plates to ensure that the heights of the plates are equal. In addition, multiple contact plates 55 provide a supporting force for the welding seam of the plate to prevent the two plates from having a small fluctuation due to the pressure of the welding machine during subsequent welding, thereby affecting the welding effect.

[0051] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A welding fixture for metal plates, comprising a bracket (1), a mounting plate (11) being fixedly connected to the top of the bracket (1), two electric telescopic rods (12) being fixedly connected to the inner wall of the mounting plate (11), a push plate (13) being fixedly connected to the other ends of the two electric telescopic rods (12), a mounting square tube (14) being fixedly connected to the side wall of the pushing plate (13), and a correction component (4) being fixedly connected to the inner wall of the mounting square tube (14), wherein: Also includes: A steering mechanism (2), the steering mechanism (2) comprising a support frame (21) fixedly connected to the side wall of the mounting square tube (14), a plurality of balls (22) being rotatably connected to the top of the support frame (21), two mounting grooves (23) being provided on the top of the support frame (21), gears 1 (24) being rotatably connected to the inner walls of the two mounting grooves (23), gears 2 (25) being rotatably connected to the inner walls of the mounting grooves (23), and rolling wheels (26) being fixedly connected to the side walls of the gears 2 (25); A limiting mechanism (3), the limiting mechanism (3) comprising a gear rod (31) fixedly connected to the top of the mounting plate (11), a support rod (32) fixedly connected to the top of the mounting plate (11), and a driving gear rod (33) fixedly connected to the inner wall of the mounting plate (11); The correction assembly (4) comprises an L-shaped toothed rod (41) slidably connected to the inner wall of the mounting square tube (14), a spring telescopic rod (42) being fixedly connected to the side wall of the L-shaped toothed rod (41), and a clamping plate (43) being fixedly connected to one end of the spring telescopic rod (42) away from the L-shaped toothed rod (41); The correction assembly (4) further comprises a driving gear (44) rotatably connected to the inner wall of the mounting square tube (14), a sector gear 1 (45) being fixedly connected to the bottom of the driving gear (44), and an L-shaped round rod (46) being fixedly connected to the bottom of the mounting square tube (14); The correction assembly (4) further comprises a gear three (47) rotatably connected to an end of the L-shaped round rod (46) away from the mounting square tube (14), the outer wall of the gear one (24) meshingly connected with the outer wall of the gear rod one (31), and the outer wall of the gear one (24) meshingly connected with the outer wall of the gear two (25); The correction assembly (4) further comprises a sector gear 2 (48) fixedly connected to the side wall of the gear 3 (47), the side wall of the sector gear 2 (48) being meshingly connected with the side wall of the sector gear 1 (45), and the outer wall of the gear 3 (47) being meshingly connected with the outer wall of the driving gear rod (33).

2. A welding fixture for metal sheets according to claim 1, characterized in that: An adjustment component (5) is fixedly connected to the side wall of the support frame (21), and the adjustment component (5) comprises a support bracket (51) fixedly connected to the side wall of the support frame (21), a plurality of rotation grooves (52) are provided on the side wall of the support bracket (51), an L-shaped square rod (53) is rotatably connected to the inner wall of the rotation groove (52), and a contact plate (55) is fixedly connected to one end of the L-shaped square rod (53) away from the support bracket (51).

3. A welding fixture for metal sheets according to claim 2, characterized in that: The adjustment assembly (5) further comprises a roller (54) rotatably connected to the inner wall of the L-shaped square rod (53); a limiting column (56) is fixedly connected to the inner wall of the rotation groove (52); and a plurality of inclined plane blocks (57) are fixedly connected to the side wall of the support bracket (51).

4. A method for using a welding fixture for metal sheets, using the device for a welding fixture for metal sheets as claimed in claim 3, characterized in that: The following steps are included: S1: Before use, two plates to be welded are placed on top of the ball bearing (22), and the electric telescopic rods (12) at both ends are powered on, so that the electric telescopic rods (12) at both ends drive the corresponding push plates (13) and the plates to move toward the center of the mounting plate (11); S2: Gear 1 (24) meshes and rotates along the outer wall of gear rod 1 (31), and gear 1 (24) drives the rolling wheel (26) to rotate clockwise through gear 2 (25), and the plate placed on the top of the ball (22) is pushed by the two rolling wheels (26) to move; S3: When the installation square tube (14) moves laterally, the gear three (47) will contact the outer wall of the driving gear rod (33), forcing the gear three (47) to rotate. The gear three (47) drives the driving gear (44) to rotate through the sector gear two (48) and the sector gear one (45), and the driving gear (44) drives the clamping plate (43) to move toward the center of the installation square tube (14) through the L-shaped gear rods (41) on both sides.

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