A fixed welding table

Abstract

The utility model discloses a fixed welding table, which belongs to the technical field of welding tables, and includes a workbench, a rotating assembly, a clamping assembly and a welding assembly; the clamping seat is driven to move by a first telescopic member, so that the clamping seat can apply a thrust to one end of a square tube, ensuring that the fixed base at the other end is firmly pressed against the rotating seat, thereby realizing accurate positioning of the fixed base and the square tube. This step avoids loosening during welding and ensures that the position of the welding gun will not shift. At the same time, the second telescopic member drives the welding gun to move in a direction perpendicular to the square tube, limiting the moving direction of the welding gun, ensuring that a weld can be stably formed during welding. In this way, the welding stability at the connection between the square tube and the fixed base is ensured, and the occurrence of loose welding due to inaccurate positioning is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding platforms, and in particular relates to a fixed welding platform. Background Art

[0002] A fence is a structure used to fence or isolate a space, usually consisting of a square tube and a fixed base. The square tube provides the main support structure of the fence, while the fixed base is used to fix the fence to the ground to increase its stability and firmness. When installing the fence, a welding table is required to weld the square tube and the base to ensure that the fence is assembled firmly and firmly. The welding table is a device used to support and fix the welding workpiece. The welding table can make the welding process more stable and efficient.

[0003] When manually welding square tubes and fixed bases, there is a problem of difficult positioning. Since the welding process requires holding a welding gun or welding rod, welders often need to spend a lot of time and energy to ensure the accurate positioning of the square tube and the fixed base. If the positioning is inaccurate, it may cause the connection between the square tube and the fixed base to be loose or the welding position to be offset. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a fixed welding table to solve the technical problem of the difficulty in positioning during manual welding proposed in the background art, resulting in loose welding or offset welding position at the connection between the square tube and the fixed base.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] The utility model provides a fixed welding table, comprising a workbench, a rotating assembly and a welding assembly; the workbench is provided with a tightening assembly, the tightening assembly comprises a first telescopic member and a tightening seat; the first telescopic member is installed above the workbench; the rotating assembly comprises a first power member and a rotating seat; the rotating seat is connected to the power end of the first power member;

[0007] The abutting seat is installed at the movable end of the first telescopic member, and the rotating seat and the abutting seat are placed at the same height; the rotating seat and the abutting seat face oppositely, and the first telescopic member drives the abutting seat to move horizontally;

[0008] The rotating seat and the abutting seat respectively place welding parts of the workpiece, the first telescopic member drives the abutting seat to move toward the rotating seat, and the rotating seat and the abutting seat respectively clamp two ends of the workpiece, so that the two welding parts of the workpiece contact each other, and the intersection area of ​​the two welding parts forms a welding contour;

[0009] The welding assembly comprises a frame, a second telescopic member and a welding gun; the frame is connected to the workbench; the second telescopic member is arranged on the frame; the welding gun is connected to the telescopic end of the second telescopic member, and the welding guns are symmetrically distributed on both sides of the welding surface with respect to the axis of the workpiece;

[0010] The telescopic end of the second telescopic member drives the frame to move vertically so that the welding gun moves closer to the boundary of the welding contour.

[0011] Furthermore, a positioning groove is formed on a side of the rotating seat opposite to the abutting seat; the center of the positioning groove is coaxial with the power end of the first power member; and the positioning groove is used for installing a fixed base.

[0012] Furthermore, the positioning groove is square; a positioning pin is fixed on one side of the rotating seat opposite to the abutting seat; the positioning pin is connected to the positioning groove; and the positioning pin is located at the corner of the positioning groove.

[0013] Furthermore, the welding assembly also includes a fixed seat, a rotating rod and a second power member; the fixed seat is connected to the workbench; a movable groove is opened on the fixed seat; the movable groove is arranged along the moving direction of the telescopic end of the second telescopic member; both ends of the rotating rod are rotatably connected to the inner side wall of the movable groove; a part of the frame is threadedly connected to the rotating rod; the frame is slidably connected in the movable groove; the fixed end of the second telescopic member is connected to a part of the frame located outside the movable groove; the second power member is connected to the fixed seat; the power end of the second power member is coaxially connected to one end of the rotating rod.

[0014] Furthermore, the welding assembly further comprises an adjustable bracket; the adjustable bracket comprises two adjustment brackets symmetrically arranged with respect to the axis of the workpiece;

[0015] The welding gun is connected to the corresponding adjusting bracket.

[0016] Furthermore, a protective cover is provided on the workbench; the protective cover is located on the outside of the first power member; the power end of the first power member rotates through the protective cover, and the rotating seat is located outside the protective cover.

[0017] Furthermore, a baffle is provided on the workbench; the baffles are respectively located on both sides of the square tube; and the arrangement direction of the baffle is parallel to the moving direction of the telescopic end of the first telescopic member.

[0018] Furthermore, a support assembly is provided on the workbench; the support assembly includes a third telescopic member and a support seat; the third telescopic member is vertically connected to the workbench; the support seat is connected to the telescopic end of the third telescopic member; the third telescopic member drives the support seat to move vertically so that the upper end of the support seat supports the workpiece.

[0019] The beneficial effects of the utility model are:

[0020] In the present application, the first telescopic member drives the abutment seat to move, so that the abutment seat can apply thrust to one end of the square tube, ensuring that the fixed base at the other end is firmly pressed against the rotating base, thereby achieving accurate positioning of the fixed base and the square tube. This step avoids loosening during welding and ensures that the position of the welding gun will not shift. At the same time, the second telescopic member drives the welding gun to move in a direction perpendicular to the square tube, limiting the moving direction of the welding gun and ensuring that the weld can be stably formed during the welding process. In this way, the welding stability at the connection between the square tube and the fixed base is ensured, and the occurrence of loose welding due to inaccurate positioning is avoided.

[0021] Other advantages, objectives and features of the utility model will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solution and beneficial effects of the utility model clearer, the utility model is described with the following drawings:

[0023] Figure 1 It is a three-dimensional diagram of the utility model;

[0024] Figure 2 It is a three-dimensional diagram of the rotating assembly and the abutting assembly of the utility model connected to the workbench;

[0025] Figure 3 It is a three-dimensional diagram of the local structure on the workbench of the utility model;

[0026] Figure 4 It is a three-dimensional diagram of the local structure of the welding assembly of the utility model.

[0027] The markings in the accompanying drawings are as follows: workbench 1, rotating assembly 2, tightening assembly 3, welding assembly 4, first power part 5, rotating seat 6, first telescopic part 7, intermediate seat 8, tightening seat 9, frame 10, second telescopic part 11, welding gun 12, positioning groove 13, positioning pin, fixed seat 15, rotating rod 16, second power part 17, moving groove 18, hanging plate 19, adjusting bracket 20, protective cover 21, baffle door 22, baffle 23, third telescopic part 24, support seat 25, square tube 26, fixed base 27, gas delivery pipe 28. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0029] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other examples, in order to avoid obscuring the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0030] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] like Figures 1 to 4 As shown, the utility model provides a fixed welding table, including a workbench 1; the shape of the workbench 1 can be a strip or a truncated cone or other structures; as long as the top side of the workbench 1 is ensured to be a horizontal plane; a rotating component 2, a tightening component 3 and a welding component 4 are provided on the workbench 1;

[0034] Specifically, the rotating assembly 2 includes a first power piece 5 and a rotating seat 6; the first power piece 5 is horizontally connected to the workbench 1; the first power piece 5 is a servo motor; a connecting shaft coaxial with the first power end is fixedly connected to the side of the rotating seat 6 close to the first power piece 5; the connecting shaft is connected to the center of the rotating seat 6; the rotating seat 6 can be a disc or a plate-shaped body as long as it is ensured that the side of the rotating seat 6 away from the first power piece 5 is a vertical side wall; the power end of the first power piece 5 is controlled to rotate, thereby driving the rotating seat 6 to rotate under the action of the coupling, and there is a gap between the rotating seat 6 and the workbench 1 to avoid the rotating seat 6 colliding with the workbench 1 when following the rotation; the servo motor can accurately control the rotation angle, which is mainly due to its use of a closed-loop control system, which can monitor and adjust the motion state of the motor through a feedback mechanism, thereby achieving precise position control and angle adjustment;

[0035] Specifically, the tightening assembly 3 includes a first telescopic member 7, an intermediate seat 8 and a tightening seat 9; the intermediate seat 8 is connected to the workbench 1; the shape of the intermediate seat 8 can be a truncated cone or a cube or other shapes, as long as the side of the intermediate seat 8 close to the rotating seat 6 is a vertical side wall; the fixed end of the first telescopic member 7 is vertically connected to the vertical side wall; the first telescopic member 7 can be an electric telescopic rod, a cylinder or an oil cylinder; a fixed pipe is fixedly connected to the center of one side of the tightening seat 9; the tightening seat 9 can be a plate-shaped or disc-shaped structure, as long as the side of the tightening seat 9 facing the rotating seat 6 is a vertical side wall; the telescopic end of the first telescopic member 7 is coaxially connected to the fixed pipe through a bearing;

[0036] The rotating seat 6 and the abutting seat 9 are placed at the same height; the rotating seat 6 and the abutting seat 9 face each other, and the first telescopic member 7 drives the abutting seat 9 to move horizontally; the rotating seat 6 and the abutting seat 9 respectively place welding parts of the workpiece, and the first telescopic member 7 drives the abutting seat 9 to move toward the rotating seat 6, and the rotating seat 6 and the abutting seat 9 respectively clamp the two ends of the workpiece, so that the two welding parts of the workpiece contact each other, and the intersection area of ​​the two welding parts forms a welding contour;

[0037] The two ends of the workpiece are clamped by the rotating seat 6 and the abutting seat 9 respectively. Specifically, the welding parts of the workpiece are the fixed base 27 and the square tube 26 respectively; the fixed base 27 and the square tube 26 are spliced ​​together, and the abutting seat 9 is driven to move by the first telescopic member 7, so that the spliced ​​fixed base 27 and the square tube 26 are clamped between the rotating seat 6 and the abutting seat 9, so that the square tube 26 and the fixed base 27 are kept in a horizontal state, and the fixed base 27 and the square tube 26 are fixed; and the axes of the spliced ​​fixed base 27 and the square tube 26, the axis of the first power member 5 and the axis of the first telescopic member 7 coincide with each other;

[0038] The welding assembly 4 includes a frame 10, a second telescopic member 11 and a welding gun 12; the frame 10 is connected to the workbench 1; the fixed end of the second telescopic member 11 is vertically connected to the frame 10; the second telescopic member 11 can be an electric telescopic rod, a cylinder or an oil cylinder; the number of welding guns 12 is two; the two welding guns 12 are symmetrically connected to the telescopic end of the second telescopic member 11 with the axis of the square tube 26; the telescopic end of the second telescopic member 11 drives the frame 10 to move vertically, so that the welding gun 12 moves closer to the boundary of the welding contour;

[0039] The distance between the two welding guns 12 is greater than the diameter of the square tube 26; the welding gun 12 is a flame welding gun; acetylene gas and oxygen are delivered to the flame welding gun through the gas delivery pipe 28. After the flame welding gun is ignited, the acetylene oxygen mixed gas burns at the outlet of the flame welding gun to generate a flame, which heats the connection between the square tube 26 and the fixed base 27, thereby allowing the square tube 26 and the fixed base 27 to be welded together.

[0040] Before welding, after the spliced ​​square tube 26 and the fixed base 27 are fixed by the above-mentioned rotating assembly 2 and the clamping assembly 3, the two welding guns 12 are driven to move from one side of the square tube 26 to the other side by the telescopic member of the second telescopic member 11. During the movement, the two welding guns 12 can weld the connection between the square tube 26 and the fixed base 27 to form two vertical welds, and the welds are the welding contours; thereafter, the telescopic end of the second telescopic member 11 is controlled to retract, because the clamping plate and the rotating seat 6 are pressed against the spliced ​​square tube 26 and the fixed base 27, and the clamping plate is connected to the telescopic end of the first telescopic member 7 through a bearing, and then the rotating plate is driven to rotate 90 degrees by the first power member 5, and the clamping plate will follow the rotation of 90°, thereby driving the spliced ​​together The square tube 26 and the fixed base 27 are rotated 90°, so that the two welds are rotated 90°, and then the telescopic member of the second telescopic member 11 drives the two welding guns 12 to move from one side of the square tube 26 to the other side, thereby forming two vertically arranged welds again, forming a total of four welds, and the four welds form a square; since the distance between the two welding guns 12 is greater than the diameter of the square tube 26, the welding guns 12 will not collide with the square tube 26 and the fixed base 27 during the welding process; after welding is completed, the telescopic member of the second telescopic member 11 is controlled to retract, and the telescopic end of the first telescopic member 7 is controlled to retract, so that the abutment of the abutment seat 9 and the rotating seat 6 on the welded square tube 26 and the fixed base 27 is released, and the welded square tube 26 and the fixed base 27 are removed.

[0041] Among them, the fixed end of the second telescopic member 11 is vertically connected to the frame 10, and the telescopic member of the second telescopic member 11 drives the two welding guns 12 to move vertically, thereby forming two vertical welds. After that, the square tube 26 and the fixed base 27 spliced ​​together are driven by the first power member 5 to rotate 90°, and the telescopic member of the second telescopic member 11 drives the two welding guns 12 to move vertically, thereby forming two vertical welds again, a total of four welds, and the four welds form a square.

[0042] In the present application, the first telescopic member 7 drives the abutting seat 9 to move, so that the abutting seat 9 can apply a thrust to one end of the square tube 26, ensuring that the fixed base 27 at the other end is firmly pressed against the rotating seat 6, thereby achieving accurate positioning of the fixed base 27 and the square tube 26. This step avoids loosening during welding and ensures that the position of the welding gun 12 will not shift. At the same time, the second telescopic member 11 drives the welding gun 12 to move in a direction perpendicular to the square tube 26, limiting the moving direction of the welding gun 12, and ensuring that the weld can be stably formed during the welding process. In this way, the welding stability at the connection between the square tube 26 and the fixed base 27 is ensured, and the occurrence of loose welding due to inaccurate positioning is avoided.

[0043] In this embodiment, Figure 3 As shown, a positioning groove 13 is formed on one side of the rotating seat 6 opposite to the abutting seat 9; the center of the positioning groove 13 is coaxial with the power end of the first power member 5; the positioning groove 13 is coaxial with the power end of the first power member 5; the positioning groove 13 is used to install a fixed base 27; the shape of the positioning groove 13 can be a cube or a rectangular parallelepiped, and the fixed base 27 is also a cube, as long as the distance between the two parallel side walls of the positioning groove 13 is equal to the side length of the fixed base 27, so as to ensure that a part of the fixed base 27 can be inserted into the positioning groove 13, and the fixed base 27 is parallel to the positioning groove 13; this can prevent the fixed base 27 from falling off the rotating seat 6, and facilitate the insertion of one end of the square tube 26 into the square groove of the fixed base 27; then the abutting seat 9 is driven by the telescopic end of the first telescopic member 7 to abut against the end of the square tube 26 away from the fixed base 27.

[0044] In this embodiment, Figure 3 As shown, the positioning groove 13 is a cube, and the rotating seat 6 is provided with a positioning hole 14 at the corner of a positioning groove 13 of the tightening seat 9; a positioning pin is connected with a thread in each positioning hole; the fixed base 27 is installed in the positioning groove 13, and then the positioning pin is screwed into the positioning hole 14, so that the corner of the fixed base 27 is tightened by the positioning pin. After welding is completed, the positioning pin is taken out first, and then the fixed base 27 is taken out.

[0045] Embodiment 2:

[0046] This embodiment is based on the first embodiment. Figure 3 , 4 As shown, the welding assembly 4 also includes a fixed seat 15, a rotating rod 16 and a second power member 17; the fixed seat 15 is connected to the workbench 1; the fixed seat 15 is in the shape of a strip; a long strip-shaped moving groove 18 is opened on the fixed seat 15; the moving groove 18 is arranged along the moving direction of the telescopic end of the second telescopic member 11; the rotating rod 16 is parallel to the first telescopic member 7; the second power member 17 is connected to the outer wall of the fixed seat 15; the power end of the second power member 17 rotates and extends into the moving groove 18, and the power end of the second power member 17 It is coaxially connected to one end of the rotating rod 16; the other end of the rotating rod 16 is rotatably connected to the inner wall of the movable groove 18; the frame 10 is strip-shaped; a part of the frame 10 is threadedly connected to the rotating rod 16; the frame 10 is slidably connected in the movable groove 18 along the length of the second telescopic member 11; the second power member 17 is a DC motor; in a DC motor, the rotation direction of the motor can be changed by changing the direction of the current; the rotating rod 16 is a screw; the frame 10 is threadedly connected to the screw through a threaded hole.

[0047] The telescopic end of the second telescopic member 11 drives the two welding guns 12 to move to the positioning position close to the square tube 26 and remain stationary, and then the second power member 17 drives the rotating rod 16 to rotate, thereby driving the threadedly connected frame 10 to move in the moving groove 18 along the length direction of the second telescopic member 11, and then driving the second telescopic member 11 to move in a direction perpendicular to the side wall of the square tube 26 for welding. After two welds are formed, the power end of the second power member 17 is stopped from rotating, and the welding gun 12 is driven back to the initial positioning position by the telescopic end of the second telescopic member 11, and then the square tube 26 is rotated 90° by the above method, and then the power end of the second power member 17 is controlled to rotate again, so as to continue welding and form two more welds. After the welding is completely completed, the power end of the second power member 17 is controlled to rotate in the opposite direction, thereby driving the rotating rod 16 to rotate in the opposite direction, and then the frame 10 is moved in the opposite direction to the initial state of the frame 10 in the moving groove 18, preparing for the welding of the next square tube 26 and the fixed base 27.

[0048] In this embodiment, Figure 3 As shown, the welding assembly 4 also includes an adjustable bracket; the adjustable bracket includes a hanging plate 19 and two adjusting brackets 20; the hanging plate 19 is vertically connected to the telescopic end of the second telescopic member 11; the two adjusting brackets 20 are vertically connected to the side of the hanging plate 19 away from the second telescopic member 11; the two adjusting brackets 20 are arranged along the length direction of the second telescopic member 11; the two adjusting brackets 20 and the axis of the square tube 26 are symmetrically arranged; the two adjusting brackets 20 each have a through hole located in the same straight line; the through hole is used to fix the gas delivery pipe 28; the welding gun 12 is connected to the corresponding adjusting bracket 20 through the fixed gas delivery pipe 28.

[0049] Embodiment three:

[0050] This embodiment is based on the first embodiment. Figure 1 As shown, a cubic protective cover 21 is provided on the workbench 1; the protective cover 21 is located on the outside of the first power member 5; a baffle 22 is hingedly connected to the side of the protective cover 21 away from the rotating seat 6 through a hinge; the first power member 5 can be inspected by opening the baffle 22; the power end of the first power member 5 rotates through the vertical side wall of the protective cover 21, and the rotating seat 6 is located outside the protective cover 21.

[0051] The arrangement of the protective cover 21 can prevent welding slag from splashing onto the first power component 5 during the welding process, thereby preventing the first power component 5 from being damaged, thereby extending the service life of the first power component 5.

[0052] In this embodiment, Figure 1 As shown, the workbench 1 is provided with two baffles 23; the two baffles 23 are connected to the protective cover 21; the baffles 23 are respectively located on both sides of the square tube 26; the arrangement direction of the baffles 23 is parallel to the moving direction of the telescopic end of the first telescopic member 7;

[0053] It should be noted that when the second telescopic member 11 is arranged vertically, the two baffles 23 are arranged vertically on both sides of the square tube 26, and the bottom ends of the baffles 23 are connected to the workbench 1; during the welding process, the welding slag is splashed on both sides of the square tube 26, and the baffles 23 on both sides can prevent the welding slag from splashing outside the workbench 1, thereby protecting the cleanliness of the working environment.

[0054] Embodiment 4:

[0055] This embodiment is based on the first embodiment. Figure 1 As shown, a support assembly is provided on the workbench 1; the support assembly includes a third telescopic member 24 and a support seat 25; the number of the third telescopic member 24 and the support seat 25 is arranged according to needs; the third telescopic member 24 is vertically connected to the workbench 1; the third telescopic member 24 is a cylinder or an oil cylinder; the support seat 25 is connected to the telescopic end of the third telescopic member 24; the third telescopic member 24 drives the support seat 25 to move vertically, so that the upper end of the support seat 25 supports the workpiece; the shape of the support seat 25 is U-shaped.

[0056] Before welding, the fixed base 27 is placed in the positioning groove 13 of the rotating base 6, and then one end of the square tube 26 is inserted into the square groove of the fixed base 27. At this time, the telescopic end of the third telescopic member 24 is controlled to drive the support base 25 to move up, and the support base 25 can support the square tube 26 to improve the stability during the welding process. Two welds are formed by welding the connection between the other tube 26 and the fixed base 27 through the welding assembly 4. The telescopic end of the third telescopic member 24 is controlled to drive the support base 25 to descend, and then the rotating base 6 is driven to rotate through the first power member 5, so as to drive the fixed base 27 to rotate under the action of the positioning groove 13, thereby driving the square tube 26 to rotate 90°, and the connection between the other tube 26 and the fixed base 27 is welded through the welding assembly 4 to form two welds to complete the welding process. After that, the telescopic end of the third telescopic member 24 is controlled to drive the support base 25 to move up, and the support base 25 can support the square tube 26 after welding is completed. Then, the first telescopic member 7 is used to drive the tightening plate to release the tightening of the other tube 26, so that the worker can take away the fixed base 27 of the square tube 26 after welding on the support base 25.

[0057] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A fixed welding table, characterized in that: include: A workbench (1); a tightening assembly (3) is provided on the workbench (1), and the tightening assembly (3) comprises a first telescopic member (7) and a tightening seat (9); the first telescopic member (7) is installed above the workbench (1); A rotating assembly (2), the rotating assembly (2) comprising a first power member (5) and a rotating seat (6); the rotating seat (6) is connected to the power end of the first power member (5); The abutting seat (9) is installed at the movable end of the first telescopic member (7), and the rotating seat (6) and the abutting seat (9) are placed at the same height; the rotating seat (6) and the abutting seat (9) face each other, and the first telescopic member (7) drives the abutting seat (9) to move horizontally; The rotating seat (6) and the abutting seat (9) respectively place welding parts of the workpiece, the first telescopic member (7) drives the abutting seat (9) to move toward the rotating seat (6), and the rotating seat (6) and the abutting seat (9) respectively clamp two ends of the workpiece, so that the two welding parts of the workpiece contact each other, and the intersection area of ​​the two welding parts forms a welding contour; A welding assembly (4), the welding assembly (4) comprising a frame (10), a second telescopic member (11) and a welding gun (12); the frame (10) is connected to the workbench (1); the second telescopic member (11) is arranged on the frame (10); the welding gun (12) is connected to the telescopic end of the second telescopic member (11), and the welding gun (12) is symmetrically distributed on both sides of the welding surface with respect to the axis of the workpiece; The telescopic end of the second telescopic member (11) drives the frame (10) to move vertically, so that the welding gun (12) moves closer to the boundary of the welding contour.

2. A fixed welding table according to claim 1, characterized in that: The rotating seat (6) is provided with a positioning groove (13) on a side opposite to the abutting seat (9); the center of the positioning groove (13) is coaxial with the first power member (5); and the positioning groove (13) is used to install a fixed base (27).

3. The fixed welding table according to claim 2, characterized in that: The positioning groove (13) is square; a positioning pin (14) is fixed on one side of the rotating seat (6) opposite to the abutting seat (9); and the positioning pin (14) is located at the corner of the positioning groove (13).

4. The fixed welding table according to claim 1, characterized in that: The welding assembly (4) further comprises a fixing seat (15), a rotating rod (16) and a second power member (17); The fixed seat (15) is connected to the workbench (1); a moving groove (18) is formed on the fixed seat (15); the moving groove (18) is arranged along the moving direction of the telescopic end of the second telescopic member (11); Both ends of the rotating rod (16) are rotatably connected to the inner side wall of the moving groove (18); A portion of the frame (10) is threadedly connected to the rotating rod (16); the frame (10) is slidably connected in the moving groove (18); The fixed end of the second telescopic member (11) is connected to a portion of the frame (10) located outside the movable groove (18); The second power member (17) is connected to the fixing seat (15); the power end of the second power member (17) is coaxially connected to one end of the rotating rod (16).

5. The fixed welding table according to any one of claims 1 to 4, characterized in that: The welding assembly (4) further comprises an adjustable bracket; The adjustable bracket comprises two adjusting brackets (20) which are arranged symmetrically with respect to the axis of the workpiece; The welding gun (12) is connected to the corresponding adjustment bracket (20).

6. The fixed welding table according to any one of claims 1 to 4, characterized in that: The workbench (1) is provided with a protective cover (21); the protective cover (21) is located outside the first power member (5); The power end of the first power member (5) rotates and passes through the protective cover (21), and the rotating seat (6) is located outside the protective cover (21).

7. The fixed welding table according to claim 6, characterized in that: The workbench (1) is provided with baffles (23); the baffles (23) are respectively located on both sides of the square tube (26); the arrangement direction of the baffles (23) is parallel to the moving direction of the telescopic end of the first telescopic member (7).

8. The fixed welding table according to claim 1, characterized in that: The workbench (1) is provided with a supporting assembly; The support assembly comprises a third telescopic member (24) and a support seat (25); The third telescopic member (24) is vertically connected to the workbench (1); The support seat (25) is connected to the telescopic end of the third telescopic member (24); the third telescopic member (24) drives the support seat (25) to move vertically, so that the upper end of the support seat (25) supports the workpiece.

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