Adjustable welding workbench

Abstract

The invention provides an adjustable welding workbench, and relates to the field of welding workbenches. A welding workbench is installed at the top of the fixed bottom connecting base, and the two ends of the top of the fixed bottom connecting base are connected with positioning bolts correspondingly, and the positioning bolts are connected with the welding workbench. Two movable clamping pieces are symmetrically connected to the interior of the welding workbench, a driving rocker is connected to the center of the bottom of the welding workbench, and two transmission connecting rods are connected to the exterior of the driving rocker. The movable adjusting block drives the driving rocker to rotate, the workpiece clamping and fixing effect is achieved, workpiece clamping and fixing are easier, more convenient and faster, the time proportion needed by workpiece clamping and fixing is reduced, and the workpiece welding machining efficiency is improved. The problems that when an existing welding workbench is used, operation is tedious, a workpiece can be clamped and fixed only by adjusting a plurality of components, the occupied time needed by clamping and fixing is long, and the welding machining efficiency of the workpiece is particularly affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of welding workbenches, in particular to an adjustable welding workbench. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. Welding is needed when processing workpieces. Workpieces are prone to displacement during welding. In order to reduce the welding requirements of workpieces, a special welding workbench is usually used to assist in fixing the workpiece.

[0003] The welding workbench can refer to CN109175846B, which includes a working platform and a leg assembly supporting the working platform. The working platform is provided with a support assembly for supporting the welded part and a clamping assembly for clamping the welded part together with the support assembly. The support assembly includes a support block, and the support block is provided with a recess to prevent the welded part from rolling on the support block. The clamping assembly includes a support rod connected to the working platform and a clamping member connected to the support rod to clamp the welded part. By installing the support assembly and the clamping assembly on the working platform, the welded part is prevented from moving or rolling during welding. Simple operation can be used to fix welded parts of various sizes and shapes, which is convenient for welding.

[0004] The existing welding workbench is complicated to operate when in use, and multiple components need to be adjusted to achieve workpiece clamping and fixation. The clamping and fixation takes a long time, which particularly affects the workpiece welding processing efficiency. In addition, the welding workbench is usually in a horizontal state, so the workpiece is placed and fixed horizontally, and the angle of the welding workbench cannot be adaptively adjusted according to the actual operation requirements of the welder. It has limitations and is not user-friendly enough. Summary of the invention

[0005] In view of this, the present invention provides an adjustable welding workbench to solve the problem that the existing welding workbench is complicated to operate during use, and multiple components need to be adjusted to achieve workpiece clamping and fixation. The clamping and fixation take a long time, which particularly affects the welding processing efficiency of the workpiece. In addition, the welding workbench is usually in a horizontal state, so the workpiece is placed and fixed horizontally, and the angle of the welding workbench cannot be adaptively adjusted according to the actual operation requirements of the welder. There are limitations and it is not user-friendly.

[0006] The present invention provides an adjustable welding workbench, which specifically includes: a fixed bottom connecting seat; a welding workbench is installed on the top of the fixed bottom connecting seat, and the two ends of the top of the fixed bottom connecting seat are respectively connected with positioning bolts, and the positioning bolts are connected to the welding workbench; two movable clamping parts are symmetrically connected inside the welding workbench, and a driving rocker is connected to the center of the bottom of the welding workbench, and two transmission connecting rods are connected to the outside of the driving rocker, and the transmission connecting rod is located at the bottom of the welding workbench, and the movable clamping part is connected to the transmission connecting rod; a screw rod is installed at the rear of the welding workbench, and a chain is connected to one end of the screw rod, and a driving motor is installed at the bottom of the welding workbench, and the driving motor is connected to the chain; a movable adjusting block is connected to the rear of the welding workbench, and the movable adjusting block is connected to the screw rod, and the driving rocker is connected to the movable adjusting block; an L-shaped support bar is installed at the front end center of the top of the welding workbench.

[0007] Furthermore, the top of the welding workbench is symmetrically provided with four guide sliding holes, and the movable clamping part is composed of a bottom connecting bar, a middle connecting column and an L-shaped upper clamping bar. The lower end of the middle connecting column is connected to the bottom connecting bar, and the top side of the bottom connecting bar is in sliding contact with the bottom side of the welding workbench. The middle connecting column is slidably connected in the guide sliding hole, and the upper end of the middle connecting column is connected to the L-shaped upper clamping bar, and the bottom side of the L-shaped upper clamping bar is in sliding contact with the top side of the welding workbench.

[0008] Furthermore, a movable sliding hole is provided at the rear end of the welding workbench, and a driving rocker is rotatably connected to the welding workbench. One end of the driving rocker slides in the movable sliding hole, one end of the transmission connecting rod is rotatably connected to the driving rocker, and the other end of the transmission connecting rod is rotatably connected to the bottom connecting bar. When the workpiece to be welded is placed on the top of the welding workbench, the workpiece contacts the L-shaped support bar, and the driving rocker is rotated. The driving rocker drives the two movable clamping parts to move inward along the guide sliding hole through the transmission connecting rod, thereby reducing the distance between the two movable clamping parts, so that the two ends of the workpiece are respectively in contact with the two movable clamping parts, thereby achieving the effect of clamping and fixing the workpiece.

[0009] Furthermore, a guide rail is provided at the rear side of the welding workbench, a guide slot is provided inside the movable adjustment block, and the movable adjustment block is slidably connected to the guide rail via the guide slot.

[0010] Furthermore, a transmission sliding hole is provided in one end of the driving rocker, and a driving block is provided on the top of the movable adjustment block, and the driving block is slidably connected in the transmission sliding hole.

[0011] Furthermore, the screw is rotatably connected to the welding workbench, a transmission screw hole is provided inside the movable adjusting block, the screw is threadedly connected to the transmission screw hole, a driven sprocket is provided at one end of the screw, a driving sprocket is installed on the driving shaft of the driving motor, the driving sprocket is transmission-connected to the driven sprocket through a chain, when the driving motor drives the screw to rotate through the chain, the screw drives the movable adjusting block to move along the guide slide rail, the driving block moves in the transmission slide hole, and the driving rocker is driven to rotate through the movable adjusting block, thereby achieving the effect of clamping and fixing the workpiece.

[0012] Furthermore, the front end of the welding workbench is rotatably connected to the front end of the fixed bottom connecting seat, and arc-shaped limit plates are respectively provided at the left and right ends of the fixed bottom connecting seat, and arc-shaped sliding holes are provided inside the arc-shaped limit plates. The angle of the arc-shaped sliding holes is °, and limit sliders are respectively provided on the left and right sides of the welding workbench, and the limit sliders are slidably connected in the arc-shaped sliding holes. The welding workbench can be rotated and adjusted according to the operating needs of the welding personnel, and the inclination angle of the welding workbench can be changed to better meet the operating needs of the welding personnel and be more humane.

[0013] Furthermore, seven positioning screw holes are equidistantly provided inside the arc-shaped limiting plate, and positioning through holes are respectively provided on the left and right sides of the welding workbench. The positioning through holes are connected with the positioning screw holes, and the positioning bolts are threadedly connected in the positioning screw holes. The inner ends of the positioning bolts are located in the positioning through holes. After the rotation and adjustment of the welding workbench is completed, the positioning through holes and the positioning screw holes are connected. The positioning bolts are rotated to move the inner ends of the positioning bolts into the positioning through holes provided on the welding workbench, so that the welding workbench is fixed by the positioning bolts.

[0014] Beneficial effects:

[0015] The two movable clamps are driven by the driving motor to rotate, and the two movable clamps are driven to move inwardly along the guide slide hole through the transmission connecting rod, thereby reducing the spacing between the two movable clamps and making the two ends of the workpiece contact with the two movable clamps respectively, so as to achieve the effect of clamping and fixing the workpiece, and the workpiece is located in the middle part of the top of the welding workbench to avoid displacement of the workpiece during welding, thereby ensuring the welding accuracy of the workpiece; the guide slide groove is matched with the guide slide rail to limit the moving trajectory of the movable adjusting block, so that the movable adjusting block can only be installed to move the guide slide rail, thereby avoiding the occurrence of the rotating condition of the movable adjusting block; when the driving motor drives the screw rod to rotate through the chain, the screw rod drives the movable adjusting block to move along the guide slide rail, and the driving block moves in the transmission slide hole, and the driving rocker is driven to rotate by the movable adjusting block, so as to achieve the effect of clamping and fixing the workpiece, making the clamping and fixing of the workpiece more simple and quick, reducing the proportion of time required for clamping and fixing the workpiece, and improving the welding processing efficiency of the workpiece.

[0016] 2. The present invention can rotate and adjust the welding workbench according to the operating needs of the welding personnel, change the inclination angle of the welding workbench, and limit the rotation angle of the welding workbench through the sliding cooperation of the limit slider and the arc-shaped sliding hole, so that the maximum inclination angle of the welding workbench is 60 degrees, which better meets the operating needs of the welding personnel and is more humane; after the rotation and adjustment of the welding workbench is completed, the positioning through hole and the positioning screw hole are connected, and the positioning bolt is rotated to move the inner end of the positioning bolt into the positioning through hole provided on the welding workbench, and the two ends of the welding workbench are fixed by the positioning bolts to ensure the stability of the tilted state of the welding workbench.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 It is a schematic diagram of the axial structure of a welding workbench in a horizontal state in an embodiment of the present invention.

[0021] Figure 2 It is a schematic diagram of the axial structure of a welding workbench in an inclined state in an embodiment of the present invention.

[0022] Figure 3 It is a schematic diagram of the shaft side structure of the fixed base connecting seat of an embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the driving rocker connection structure of the bottom of the welding workbench in an embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the top axial structure of a welding workbench according to an embodiment of the present invention.

[0025] Figure 6 It is a schematic diagram of the axial side structure of the movable clamping member of an embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the connection structure between the driving rocker and the transmission connecting rod of an embodiment of the present invention.

[0027] Figure 8 It is a schematic diagram of the axial structure of the movable adjustment block of an embodiment of the present invention.

[0028] Reference numerals list 1. Fixed bottom connecting seat; 101. Arc-shaped limit plate; 1011. Arc-shaped slide hole; 1012. Positioning screw hole; 2. Welding workbench; 201. Guide slide hole; 202. Movable slide hole; 203. Guide slide rail; 204. Limit slider; 205. Positioning through hole; 3. Movable clamping piece; 301. Bottom connecting bar; 302. Middle connecting column; 303. L-shaped upper clamping bar; 4. Driving rocker; 401. Transmission slide hole; 5. Transmission connecting rod; 6. Screw; 601. Driven sprocket; 7. Movable adjustment block; 701. Guide slide groove; 702. Driving block; 703. Transmission screw hole; 8. Driving motor; 801. Active sprocket; 9. Chain; 10. L-shaped support bar; 11. Positioning bolt. DETAILED DESCRIPTION

[0029] Example: Please refer to Figures 1 to 8 As shown: The present invention provides an adjustable welding workbench, comprising a fixed bottom connecting seat 1; a welding workbench 2 is installed on the top of the fixed bottom connecting seat 1, and positioning bolts 11 are respectively connected to the two ends of the top of the fixed bottom connecting seat 1, and the positioning bolts 11 are connected to the welding workbench 2; two movable clamping parts 3 are symmetrically connected inside the welding workbench 2, and a driving rocker 4 is connected to the center of the bottom of the welding workbench 2, and two transmission connecting rods 5 are connected to the outside of the driving rocker 4, and the transmission connecting rods 5 are located at the bottom of the welding workbench 2, and the movable clamping parts 3 are connected to the transmission connecting rods 5; the welding workbench 2 is provided with a plurality of movable clamping parts 3, and the plurality of movable clamping parts 3 are connected to the plurality of movable clamping parts 3; ... The top of the workbench 2 is symmetrically provided with four guide sliding holes 201, and the movable clamping member 3 is composed of a bottom connecting bar 301, a middle connecting column 302 and an L-shaped upper clamping bar 303. The lower end of the middle connecting column 302 is connected to the bottom connecting bar 301, and the top side of the bottom connecting bar 301 is in sliding contact with the bottom side of the welding workbench 2. The middle connecting column 302 is slidably connected to the guide sliding hole 201, and the upper end of the middle connecting column 302 is connected to the L-shaped upper clamping bar 303, and the bottom side of the L-shaped upper clamping bar 303 is in sliding contact with the top side of the welding workbench 2; the rear end of the welding workbench 2 is provided with a movable sliding hole 202, and the driving rocker 4 is connected to the The welding table 2 is rotatably connected, one end of the driving rocker 4 slides in the movable sliding hole 202, one end of the transmission connecting rod 5 is rotatably connected to the driving rocker 4, and the other end of the transmission connecting rod 5 is rotatably connected to the bottom connecting bar 301. When the workpiece to be welded is placed on the top of the welding table 2, the workpiece contacts the L-shaped support bar 10, and the driving rocker 4 is rotated. The driving rocker 4 drives the two movable clamping members 3 to move inward along the guide sliding hole 201 through the transmission connecting rod 5, shortening the distance between the two movable clamping members 3, so that the two ends of the workpiece are respectively in contact with the two movable clamping members 3. It has the effect of clamping and fixing the workpiece. The workpiece is in the middle part of the top of the welding workbench 2, which prevents the workpiece from being displaced during welding and ensures the welding accuracy of the workpiece. A screw rod 6 is installed at the rear of the welding workbench 2, and a chain 9 is connected to one end of the screw rod 6. A drive motor 8 is installed at the bottom of the welding workbench 2, and the drive motor 8 is connected to the chain 9. A movable adjustment block 7 is connected to the rear of the welding workbench 2, and the movable adjustment block 7 is connected to the screw rod 6, and the driving rocker 4 is connected to the movable adjustment block 7. An L-shaped support bar 10 is installed at the center of the front end of the top of the welding workbench 2.

[0030] Among them, a guide rail 203 is provided on the rear side of the welding workbench 2, a guide groove 701 is provided inside the movable adjusting block 7, the movable adjusting block 7 is slidably connected to the guide rail 203 through the guide groove 701, a transmission slide hole 401 is provided at one end of the driving rocker 4, and a driving block 702 is provided on the top of the movable adjusting block 7, and the driving block 702 is slidably connected to the transmission slide hole 401; by adopting the above technical scheme, the guide groove 701 is matched with the guide rail 203 to limit the moving trajectory of the movable adjusting block 7, so that the movable adjusting block 7 can only be installed on the guide rail 203 to move, thereby avoiding the occurrence of rotation of the movable adjusting block 7.

[0031] The screw rod 6 is rotatably connected to the welding workbench 2, and a transmission screw hole 703 is provided inside the movable adjusting block 7. The screw rod 6 is threadedly connected to the transmission screw hole 703. A driven sprocket 601 is provided at one end of the screw rod 6. A driving sprocket 801 is installed on the driving shaft of the driving motor 8. The driving sprocket 801 is transmission-connected to the driven sprocket 601 through a chain 9. By adopting the above technical scheme, when the driving motor 8 drives the screw rod 6 to rotate through the chain 9, the screw rod 6 drives the movable adjusting block 7 to move along the guide slide rail 203, and the driving block 702 moves in the transmission slide hole 401. The driving rocker 4 is driven to rotate through the movable adjusting block 7, so as to achieve the effect of clamping and fixing the workpiece, make the clamping and fixing of the workpiece more simple and quick, reduce the proportion of time required for clamping and fixing the workpiece, and improve the welding processing efficiency of the workpiece.

[0032] Among them, the front end of the welding workbench 2 is rotatably connected to the front end of the fixed bottom connecting seat 1, and the left and right ends of the fixed bottom connecting seat 1 are respectively provided with arc-shaped limit plates 101, and the arc-shaped sliding holes 1011 are arranged inside the arc-shaped limit plates 101, and the angle of the arc-shaped sliding holes 1011 is 60°. The left and right sides of the welding workbench 2 are respectively provided with limit sliders 204, and the limit sliders 204 are slidably connected in the arc-shaped sliding holes 1011; by adopting the above technical scheme, the welding workbench 2 can be rotated and adjusted according to the operating needs of the welding personnel, and the inclination angle of the welding workbench 2 can be changed. The rotation angle of the welding workbench 2 is limited by the sliding cooperation between the limit slider 204 and the arc-shaped sliding hole 1011, so that the maximum inclination angle of the welding workbench 2 is 60 degrees, which better meets the operating needs of the welding personnel and is more humane.

[0033] Among them, seven positioning screw holes 1012 are equidistantly arranged inside the arc-shaped limiting plate 101, and positioning through holes 205 are respectively arranged on the left and right sides of the welding workbench 2, the positioning through holes 205 are connected with the positioning screw holes 1012, the positioning bolts 11 are threadedly connected in the positioning screw holes 1012, and the inner ends of the positioning bolts 11 are located in the positioning through holes 205; by adopting the above technical scheme, after the rotation and adjustment of the welding workbench 2 is completed, the positioning through holes 205 and the positioning screw holes 1012 are connected, the positioning bolts 11 are rotated to make the inner ends of the positioning bolts 11 move to the positioning through holes 205 provided on the welding workbench 2, and the two ends of the welding workbench 2 are fixed by the positioning bolts 11 to ensure the stability of the tilted state of the welding workbench 2.

[0034] Specific usage and function of this embodiment: In the present invention, the workpiece to be welded is placed on the top of the welding workbench 2, the workpiece is in contact with the L-shaped support bar 10, and the guide slide groove 701 cooperates with the guide slide rail 203 to limit the moving trajectory of the movable adjustment block 7, so that the movable adjustment block 7 can only be installed to move the guide slide rail 203, thereby avoiding the occurrence of the movable adjustment block 7 rotating; when the driving motor 8 drives the screw 6 to rotate through the chain 9, the screw 6 drives the movable adjustment block 7 to move along the guide slide rail 203, and the driving block 702 moves in the transmission slide hole 401, and the movable adjustment block 7 is moved by the movable adjustment block 7. The block 7 drives the driving rocker 4 to rotate, and the driving rocker 4 drives the two movable clamping parts 3 to move inward along the guide slide hole 201 through the transmission connecting rod 5, thereby reducing the distance between the two movable clamping parts 3, so that the two ends of the workpiece are respectively in contact with the two movable clamping parts 3, thereby playing a clamping and fixing effect on the workpiece. The workpiece is located in the middle of the top of the welding workbench 2, which avoids displacement of the workpiece during welding and ensures the welding accuracy of the workpiece; makes the clamping and fixing of the workpiece simpler and faster, reduces the proportion of time required for clamping and fixing the workpiece, and improves the welding processing efficiency of the workpiece; and also adjusts the welding workpiece according to the operation requirements of the welding personnel. The welding table 2 is rotated and adjusted to change the inclination angle of the welding table 2. The limit slider 204 is slidably matched with the arc-shaped sliding hole 1011 to limit the rotation angle of the welding table 2, so that the maximum inclination angle of the welding table 2 is 60 degrees, which better meets the needs of welding personnel for operation and use, and is more humane; after the rotation adjustment of the welding table 2 is completed, the positioning through hole 205 is connected to the positioning screw hole 1012, and the positioning bolt 11 is rotated to move the inner end of the positioning bolt 11 into the positioning through hole 205 provided on the welding table 2. The welding table 2 is fixed by the positioning bolt 11 2 are fixed at both ends to ensure the stability of the tilted state of the welding workbench 2; after the workpiece is welded, the driving motor 8 drives the screw rod 6 to rotate in the opposite direction through the chain 9, and the screw rod 6 drives the movable adjustment block 7 to move in the opposite direction along the guide slide rail 203, and drives the driving rocker 4 to rotate in the opposite direction through the movable adjustment block 7, and the driving rocker 4 drives the two movable clamping members 3 to move outward along the guide slide hole 201 through the transmission connecting rod 5, thereby increasing the spacing between the two movable clamping members 3, so that the two ends of the workpiece are separated from the two movable clamping members 3 respectively, and the welded workpiece can be removed from the top of the welding workbench 2.

Claims

1. An adjustable welding workbench, characterized in that: include: A fixed bottom connecting seat (1); a welding workbench (2) is installed on the top of the fixed bottom connecting seat (1), and positioning bolts (11) are respectively connected to the two ends of the top of the fixed bottom connecting seat (1), and the positioning bolts (11) are connected to the welding workbench (2); the welding workbench (2) is symmetrically connected to two movable clamping parts (3), and a driving rocker (4) is connected to the center of the bottom of the welding workbench (2), and the driving rocker (4) is connected to two transmission connecting rods (5) on the outside, and the transmission connecting rods (5) are located at the bottom of the welding workbench (2), and the movable clamping parts (3) are symmetrically connected to the inside of the welding workbench (2), and a driving rocker (4) is connected to the center of the bottom of the welding workbench (2), and the driving rocker (4) is connected to two transmission connecting rods (5) on the outside, and the transmission connecting rods (5) are located at the bottom of the welding workbench (2). The holding piece (3) is connected to the transmission connecting rod (5); a screw rod (6) is installed at the rear of the welding workbench (2), and one end of the screw rod (6) is connected to a chain (9); a driving motor (8) is installed at the bottom of the welding workbench (2), and the driving motor (8) is connected to the chain (9); a movable adjustment block (7) is connected to the rear of the welding workbench (2), and the movable adjustment block (7) is connected to the screw rod (6); the driving rocker (4) is connected to the movable adjustment block (7); an L-shaped support bar (10) is installed at the center of the front end of the top of the welding workbench (2).

2. An adjustable welding workbench as claimed in claim 1, characterized in that: The top of the welding workbench (2) is symmetrically provided with four guide sliding holes (201); the movable clamping member (3) is composed of a bottom connecting bar (301), a middle connecting column (302) and an L-shaped upper clamping bar (303); the lower end of the middle connecting column (302) is connected to the bottom connecting bar (301); the top side of the bottom connecting bar (301) is in sliding contact with the bottom side of the welding workbench (2); the middle connecting column (302) is slidably connected in the guide sliding hole (201); the upper end of the middle connecting column (302) is connected to the L-shaped upper clamping bar (303); the bottom side of the L-shaped upper clamping bar (303) is in sliding contact with the top side of the welding workbench (2).

3. An adjustable welding workbench as claimed in claim 2, characterized in that: A movable sliding hole (202) is provided at the rear end of the welding workbench (2), the driving rocker (4) is rotatably connected to the welding workbench (2), one end of the driving rocker (4) slides in the movable sliding hole (202), one end of the transmission connecting rod (5) is rotatably connected to the driving rocker (4), and the other end of the transmission connecting rod (5) is rotatably connected to the bottom connecting bar (301).

4. An adjustable welding workbench as claimed in claim 1, characterized in that: A guide rail (203) is provided at the rear side of the welding workbench (2), a guide groove (701) is provided inside the movable adjustment block (7), and the movable adjustment block (7) is slidably connected to the guide rail (203) via the guide groove (701).

5. An adjustable welding workbench as claimed in claim 1, characterized in that: A transmission sliding hole (401) is provided in one end of the driving rocker (4), a driving block (702) is provided on the top of the movable adjustment block (7), and the driving block (702) is slidably connected in the transmission sliding hole (401).

6. An adjustable welding workbench as claimed in claim 1, characterized in that: The screw rod (6) is rotatably connected to the welding workbench (2); a transmission screw hole (703) is provided inside the movable adjustment block (7); the screw rod (6) is threadedly connected to the transmission screw hole (703); a driven sprocket (601) is provided at one end of the screw rod (6); a driving sprocket (801) is installed on the driving shaft of the driving motor (8); and the driving sprocket (801) is transmission-connected to the driven sprocket (601) via a chain (9).

7. An adjustable welding workbench as claimed in claim 1, characterized in that: The front end of the welding workbench (2) is rotatably connected to the front end of the fixed bottom connecting seat (1); arc-shaped limit plates (101) are respectively provided at the left and right ends of the fixed bottom connecting seat (1); an arc-shaped sliding hole (1011) is provided inside the arc-shaped limit plate (101); the angle of the arc-shaped sliding hole (1011) is 60 degrees; and limit sliders (204) are respectively provided at the left and right sides of the welding workbench (2); the limit sliders (204) are slidably connected in the arc-shaped sliding hole (1011).

8. An adjustable welding workbench as claimed in claim 7, characterized in that: Seven positioning screw holes (1012) are equidistantly arranged inside the arc-shaped limiting plate (101), and positioning through holes (205) are respectively arranged on the left and right sides of the welding workbench (2), the positioning through holes (205) are connected to the positioning screw holes (1012), the positioning bolts (11) are threadedly connected in the positioning screw holes (1012), and the inner ends of the positioning bolts (11) are located in the positioning through holes (205).

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