A thermal insulation nail welding device for HVAC pipeline construction

Abstract

The present invention relates to the technical field of welding equipment, and in particular to an insulation nail welding device for insulation layer used in HVAC pipeline construction. It comprises: an insulation nail welding machine; a first control switch, installed on the welding gun; a mounting frame, slidably connected to the welding gun, and a first notch is opened on the mounting frame; a controller, installed on the outer wall of the mounting frame; a connecting spring, the two ends of which are respectively connected to the welding gun and the mounting frame; a first electric push rod, symmetrically installed on the bottom of the mounting frame. The present invention can realize an automated insulation nail loading process through the coordinated work of the first electric push rod, the movable seat and the splint. Specifically, when insulation nail welding is required, the first electric push rod drives the movable seat to move to the left, so that the splint located on the movable seat can accurately clamp the insulation nail body pre-placed on the rotating disk, and position it to the top of the welding gun ready for welding. This series of actions can be completed without manual intervention, which can improve overall work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, in particular to a thermal insulation nail welding device for thermal insulation layer used in HVAC pipeline construction. Background Art

[0002] In HVAC pipe construction, the installation of the insulation layer is a key link to ensure the thermal efficiency of the pipe. As an important component of the insulation layer, the insulation board usually needs to be fixed to the surface of the HVAC pipe with insulation nails. However, in actual operation, the two existing mainstream installation methods have certain technical defects.

[0003] The first installation method is that the worker inserts multiple insulation nails into the insulation board in advance, then turns the insulation board upside down and lifts it to attach it to the bottom of the HVAC pipe. The worker then needs to fix the insulation board with one hand and operate the welding gun of the insulation nail welding machine with the other hand, aiming at each insulation nail in turn for welding to achieve the fixation of the insulation board and the pipe. Although this method is convenient for centralized welding, during the inversion of the insulation board, the insulation nails are easily fallen off due to gravity or slight shaking during operation, causing workers to repeatedly pick up and reinstall the fallen insulation nails, which not only increases labor intensity, but also seriously reduces work efficiency. The second method is to first attach the insulation board to the bottom of the HVAC pipe, then load the insulation nails into the welding gun one by one, and manually pass the insulation nails through the insulation board and weld them in place. Since the welding gun of the existing insulation nail welding machine can only fix one insulation nail at a time, workers are required to frequently perform loading operations, which is cumbersome and time-consuming. At the same time, during the welding process, workers need to fix the position of the insulation board with one hand to prevent it from shifting, and operate the welding gun with the other hand, which makes the loading operation of the insulation nails extremely inconvenient and will further reduce the overall work efficiency. Summary of the Invention

[0004] In view of this, the present invention provides an insulation layer insulation nail welding device for HVAC pipeline construction, which can overcome the shortcomings of existing insulation nail welding machines in installing insulation boards, which are not only time-consuming and labor-intensive, inconvenient to operate, but also have low overall work efficiency.

[0005] Technical solution: An insulation layer insulation nail welding device for HVAC pipeline construction, including: an insulation nail welder; a first control switch, installed on the welding gun; a mounting frame, slidably connected to the welding gun, and a first notch is opened on the mounting frame; a controller, installed on the outer wall of the mounting frame; a connecting spring, with both ends respectively connected to the welding gun and the mounting frame; a first electric push rod, symmetrically installed at the bottom of the mounting frame; a moving seat, connected to the telescopic rod of the first electric push rod; a splint, symmetrically slidably connected to the moving seat; a second electric push rod, symmetrically installed on the moving seat, and the telescopic rod of the second electric push rod is connected to the splint; a rotating disk, rotatably connected in the mounting frame; a partition block, circumferentially spaced and connected to the top of the rotating disk, for separating the insulation nail bodies placed on the rotating disk; a rotating assembly, arranged on the mounting frame, for driving the rotating disk to rotate.

[0006] Furthermore, the rotating assembly includes: a servo motor installed on the mounting frame; a driving gear connected to the output shaft of the servo motor; a driven ring gear connected to the bottom of the rotating disk, and the driven ring gear is meshed with the driving gear.

[0007] Furthermore, it also includes: a blocking cover, which is fixed to the top of the installation frame by magnetic attraction, and a guide groove and a second notch are opened at the bottom of the blocking cover, and the second notch is aligned with the first notch.

[0008] Furthermore, it also includes: a connecting seat, which is connected to the outer wall of the installation frame at circumferential intervals; a rotating frame, which is rotatably connected to the connecting seat; a torsion spring, whose two ends are respectively connected to the rotating frame and the connecting seat; and a roller, which is rotatably connected to the rotating frame.

[0009] Furthermore, it also includes: a rubber ring symmetrically connected to both sides of the rotating frame, and the inner side of the rubber ring is in contact with the rotating shaft of the roller.

[0010] Furthermore, it also includes: connecting blocks, which are connected to the outer wall of the mounting frame at circumferential intervals, and the connecting blocks and the connecting seats are staggered; a lifting rod, which is slidably connected to the connecting blocks; a square plate, which is connected to the top of the lifting rod; and a return spring, whose two ends are respectively connected to the square plate and the connecting block.

[0011] Furthermore, it also includes: a mounting bracket connected to the mounting frame; laser emitters, which are installed on the mounting bracket at circumferential intervals, and circular holes are circumferentially spaced on the mounting frame, and the circular holes are located directly above the laser emitters.

[0012] Furthermore, it also includes: a guide seat connected to the installation frame; an arc-shaped push plate, slidably connected to the guide seat, and the arc-shaped push plate is in contact with the welding gun; a connecting plate, connected to the side of the guide seat; a second control switch, installed on the connecting plate, and the arc-shaped push plate is in contact with the second control switch.

[0013] The present invention has the following advantages: 1. The present invention can realize the automated insulation nail loading process through the coordinated work of the first electric push rod, the movable seat and the splint. Specifically, when the insulation nail welding is required, the first electric push rod drives the movable seat to move to the left, so that the splint located on the movable seat can accurately clamp the insulation nail body pre-placed on the rotating disk, and position it to the top of the welding gun ready for welding. This series of actions can be completed without human intervention, which can improve the overall work efficiency.

[0014] 2. The present invention uses the function of the baffle cover to not only prevent the insulation nail body from tipping over during the rotation process, but also ensure that the insulation nail body will not be obstructed in the process of being clamped by the clamping plate and moving to the welding position. In addition, the leveling component can handle the uneven aluminum foil layer at the bottom of the insulation board, so that the insulation nail body can smoothly pass through the insulation board and contact with the HVAC pipe, which can greatly improve the adaptability of the equipment to different working conditions and simplify the operation process.

[0015] 3. The present invention uses the laser emitter to facilitate workers to control the welding gun to move accurately to the bottom of the welding point. Then, through the cooperation of the alignment component, the insulation nail body can be accurately aligned with the welding point to ensure the welding effect. At the same time, the stabilization component can provide necessary support when the installation frame contacts the insulation board, avoiding the equipment tilt problem caused by the irregular surface of the insulation board, thereby ensuring the stability of the welding process and the consistency of the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the installation of the first electric push rod, the movable seat, the clamping plate and the second electric push rod of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the rotating disk, the partition block and the rotating assembly of the present invention.

[0019] Figure 4 This is a schematic diagram of the insulation nail body being placed on the rotating disk.

[0020] Figure 5 Schematic diagram of the installation of the barrier cover of the present invention.

[0021] Figure 6 Schematic diagram of the specific structure of the blocking cover of the present invention.

[0022] Figure 7 It is a schematic diagram of the specific structure of the installation frame of the present invention.

[0023] Figure 8 This is a schematic diagram of the installation of the mounting frame, laser emitter, guide seat and arc-shaped push plate of the present invention.

[0024] Figure 9 This is a schematic diagram of the separation structure of the arc-shaped push plate and the second control switch of the present invention.

[0025] The meaning of the reference numerals in the figure: 001-insulation nail body, 1-insulation nail welding machine, 101-welding gun, 2-first control switch, 3-mounting frame, 301-first notch, 302-controller, 4-connecting spring, 5-first electric push rod, 6-moving seat, 7-clamping plate, 8-second electric push rod, 9-rotating disk, 10-partitioning block, 11-servo motor, 12-driving gear, 13-driven gear ring, 14-blocking cover, 1401-guide groove, 1402-second notch, 15-connecting seat, 16-rotating frame, 17-torsion spring, 18-roller, 19-rubber ring, 20-connecting block, 21-lifting rod, 22-square plate, 23-reset spring, 24-mounting frame, 25-laser emitter, 26-round hole, 27-guide seat, 28-arc push plate, 29-connecting plate, 30-second control switch. DETAILED DESCRIPTION

[0026] Embodiment: A heat preservation nail welding device for heat preservation layer used in HVAC pipeline construction, such as Figures 1-4 As shown, it includes a thermal insulation nail welder 1, a first control switch 2, a mounting frame 3, a controller 302, a connecting spring 4, a first electric push rod 5, a moving seat 6, a splint 7, a second electric push rod 8, a rotating disk 9, a separator 10 and a rotating assembly. The first control switch 2 is installed on the welding gun 101 of the thermal insulation nail welder 1, and the upper part of the welding gun 101 of the thermal insulation nail welder 1 is slidably connected to the mounting frame 3, and the right part of the mounting frame 3 is provided with two first notches 301. The top of the welding gun 101 of the thermal insulation nail welder 1 can pass through the mounting frame 3, and the front side of the mounting frame 3 is installed with a controller 302. The outside of the welding gun 101 of the thermal insulation nail welder 1 is wound with a connecting spring 4, and the two ends of the connecting spring 4 are respectively connected to the welding gun 101 and the bottom of the mounting frame 3, and the bottom of the mounting frame 3 is symmetrically installed with the second notch 301. An electric push rod 5, a moving seat 6 is connected between the telescopic rods of the two first electric push rods 5, and the upper part of the moving seat 6 is symmetrically connected to the splint 7 for sliding front and back. The splint 7 is horizontally aligned with the first notch 301, and the left end of the splint 7 is an arc surface. The upper part of the moving seat 6 is symmetrically installed with the second electric push rod 8 front and back, and the telescopic rod of the second electric push rod 8 is connected to the splint 7. A rotating disk 9 is rotatably connected to the lower side of the interior of the installation frame 3, and a plurality of dividing blocks 10 are circumferentially spaced apart at intervals on the top of the rotating disk 9. The dividing blocks 10 are symmetrically provided with arc surfaces on one side close to the center of the rotating disk 9, and the arc surface is adapted to the outer edge of the insulation nail body 001. The dividing blocks 10 are used to separate the insulation nail body 001 placed on the rotating disk 9. A rotating component for driving the rotating disk 9 to rotate is provided on the installation frame 3.

[0027] like Figure 3As shown, the rotating assembly includes a servo motor 11, a driving gear 12 and a driven ring gear 13. The servo motor 11 is installed on the left side of the lower part of the mounting frame 3. The output shaft of the servo motor 11 is connected to the driving gear 12. The driven ring gear 13 is connected to the bottom of the rotating disk 9, and the driven ring gear 13 is engaged with the driving gear 12.

[0028] When the device is needed, first place a plurality of heat preservation nail bodies 001 on the rotating disk 9 (such as Figure 4As shown), the partition block 10 can separate each insulation nail body 001, and the partition block 10 and the installation frame 3 can cooperate to limit the insulation nail body 001 to prevent the insulation nail body 001 from falling; then the preparation work of the insulation nail welding machine 1 is completed, and the insulation board is attached to the bottom of the HVAC pipe. Then the worker holds the welding gun 101 of the insulation nail welding machine 1 to control the installation frame 3 to move so that the top of the installation frame 3 contacts the bottom of the insulation board, and then presses the first control switch 2 once. The first control switch 2 sends a signal. After receiving the signal, the controller 302 will first control the first electric push rod 5 to drive the moving seat 6 to move a specified distance to the left, and move The seat 6 drives the splint 7 to move to the left through the first notch 301, and the two splints 7 will be located on the front and rear sides of one of the insulation nail bodies 001, and then the controller 302 will control the second electric push rod 8 to drive the splints 7 on the front and rear sides to move closer to each other, so that the two splints 7 can cooperate to clamp the insulation nail body 001, so that the insulation nail body 001 remains in a vertical state, and the splint 7 can drive the insulation nail body 001 to move to the left to the top of the welding gun 101, thereby automatically completing the loading function of the insulation nail body 001, and the welding gun 101 can fix the insulation nail body 001 on it through magnetic energy (this is the function of the welding gun 101 itself). The controller 302 then controls the second electric push rod 8 to drive the front and rear splints 7 to move away from each other, so that the two splints 7 are released. The controller 302 then controls the first electric push rod 5 to drive the movable seat 6 and the splint 7 to move to the right and reset, so that the splint 7 is away from the first notch 301. The controller 302 then controls the servo motor 11 to drive the driving gear 12 to rotate a specified number of circles. The driving gear 12 drives the driven gear ring 13 to rotate, and the driven gear ring 13 drives the rotating disk 9 to rotate. The rotating disk 9 drives the heat preservation nail body 001 and the partition block 10 thereon to rotate, so that the next heat preservation nail body 001 is horizontally aligned with the first notch 301, and then the worker can push the welding gun 101 upwards. Since the mounting frame 3 is blocked by the insulation board and cannot move upwards, the connecting spring 4 will be compressed, and the welding gun 101 can drive the insulation nail body 001 to move upwards, so that the insulation nail body 001 can pass through the insulation board and contact the bottom of the HVAC pipe. At this time, the worker can weld the insulation nail body 001 to the bottom of the HVAC pipe by manipulating the welding gun 101, and then repeat the above operation to weld each insulation nail body 001 to the bottom of the HVAC pipe. There is no need for workers to manually load the insulation nail body 001 frequently. The operation is simple and can improve work efficiency.

[0029] like Figure 5 and Figure 6As shown, it also includes a blocking cover 14, the blocking cover 14 is fixed to the top of the installation frame 3 by magnetic attraction, and a guide groove 1401 is opened at the bottom of the blocking cover 14, and two second notches 1402 are also opened at the bottom of the blocking cover 14, and the second notches 1402 are vertically aligned with the first notches 301; when the worker places multiple insulation nail bodies 001 on the top of the rotating disk 9, the blocking cover 14 can be covered on the top of the installation frame 3. At this time, the upper ends of the insulation nail bodies 001 are all located in the guide grooves 1401. When the rotating disk 9 drives the insulation nail bodies 001 to rotate, the upper ends of the insulation nail bodies 001 can rotate along the guide grooves 1401. The guide grooves 1401 play a limiting role, which can prevent the insulation nail bodies 001 from tipping over during the rotation process, and when the insulation nail bodies 001 move to the left for loading, the upper ends of the insulation nail bodies 001 can smoothly pass through the second notches 1402, and the blocking cover 14 will not block the movement of the insulation nail bodies 001.

[0030] Since there is a layer of aluminum foil at the bottom of some insulation boards, and the aluminum foil is usually wrinkled and uneven, which will affect the penetration of the insulation nail body 001, a flattening component is designed; Figure 7 As shown, the paving assembly includes a connecting seat 15, a rotating frame 16, a torsion spring 17, a roller 18 and a rubber ring 19. Four connecting seats 15 are circumferentially connected to the upper part of the outer wall of the mounting frame 3. The rotating frames 16 are rotatably connected to the four connecting seats 15. A torsion spring 17 is connected between the rotating axis of the rotating frame 16 and the connecting seat 15. The rollers 18 are rotatably connected to the upper parts of the four rotating frames 16. Two rubber rings 19 are symmetrically connected to the upper parts of the four rotating frames 16, and the inner sides of the rubber rings 19 are in contact with the rotating axis of the rollers 18.

[0031] When the mounting frame 3 moves upward and approaches the bottom of the insulation board, the mounting frame 3 will drive the connecting seat 15, the rotating frame 16 and the roller 18 to move upward. At this time, the roller 18 will first contact the aluminum foil at the bottom of the insulation board. At this time, the roller 18 will stop moving upward due to obstruction, and the mounting frame 3 will drive the connecting seat 15 to continue to move upward. The connecting seat 15 will squeeze the rotating frame 16 to rotate, the torsion spring 17 will deform, and the rotating frame 16 will drive the four rollers 18 to move to the side away from each other. During the movement of the roller 18, the friction between the rubber ring 19 and the roller 18 is greater than the friction between the roller 18 and the aluminum foil, so the roller 18 cannot rotate on its own, and the roller 18 is The friction force can pull the four sides of the aluminum foil to move toward the side away from each other and flatten it. When the aluminum foil at the installation position of the insulation nail body 001 is completely flattened, the friction force between the roller 18 and the aluminum foil will gradually increase. When the friction force between the roller 18 and the aluminum foil is greater than the friction force between the rubber ring 19 and the roller 18, the roller 18 can rotate. At this time, the roller 18 will roll on the bottom of the aluminum foil until the top of the installation frame 3 can contact the bottom of the insulation board. This can ensure that the aluminum foil at the installation position of the insulation nail body 001 is in a flat state, which is convenient for the subsequent insertion of the insulation nail body 001; when the installation frame 3 moves in the direction away from the insulation board, the torsion spring 17 will return to its original state, driving the rotating frame 16 to rotate and reset.

[0032] Since the insulation board is made of soft material, there may be uneven parts on the bottom of the insulation board. When the top of the installation frame 3 contacts the uneven parts on the bottom of the insulation board, the installation frame 3 may tilt, affecting the subsequent welding of the insulation nail body 001. Therefore, a stabilizing component is designed; Figure 7 As shown, the stabilizing assembly includes a connecting block 20, a lifting rod 21, a square plate 22 and a return spring 23. Four connecting blocks 20 are connected to the upper part of the outer wall of the mounting frame 3 at circumferential intervals, and the connecting blocks 20 and the connecting seat 15 are staggered. The four connecting blocks 20 are all slidably connected to the lifting rods 21, and the tops of the four lifting rods 21 are all connected to the square plate 22. The outside of the four lifting rods 21 is wound with a return spring 23, and the two ends of the return spring 23 are respectively connected to the bottom of the square plate 22 and the top of the connecting block 20.

[0033] When the mounting frame 3 moves upward and approaches the bottom of the insulation board, the mounting frame 3 will drive the square plate 22 to move upward until it contacts the bottom of the insulation board. At this time, the square plate 22 is blocked and stops moving upward, and the mounting frame 3 will drive the connecting block 20 to continue moving upward. The reset spring 23 is compressed until the top of the mounting frame 3 can contact the bottom of the insulation board. At this time, the four square plates 22 contact the bottom of the insulation board at the same time, which can ensure the horizontal stability of the mounting frame 3 and the welding effect of the insulation nail body 001; when the mounting frame 3 moves away from the insulation board, the reset spring 23 will return to its original state, driving the lifting rod 21 and the square plate 22 to move upward and reset relative to the connecting block 20.

[0034] like Figure 8 As shown, it also includes a mounting bracket 24 and a laser emitter 25. The mounting bracket 24 is connected to the lower part of the mounting frame 3. Four laser emitters 25 are installed on the mounting bracket 24 at circumferential intervals, and four circular holes 26 are spaced circumferentially at the lower part of the mounting frame 3. The circular holes 26 correspond to the laser emitters 25 one by one, and the circular holes 26 are located directly above the corresponding laser emitters 25. When the device needs to be used, the laser emitter 25 can be controlled to emit laser upwards first. The laser can pass through the circular hole 26 and irradiate the bottom of the insulation board. The position of the four lasers can be used to accurately locate the position where the insulation nail body 001 needs to be installed, so that the worker can accurately control the welding gun 101 to move to directly below the welding point.

[0035] Since the heat preservation nail body 001 is manually placed on the top of the rotating disk 9, and the heat preservation nail body 001 rotates with the rotating disk 9, the position of the heat preservation nail body 001 on the rotating disk 9 will be slightly deviated, which may affect the subsequent alignment of the heat preservation nail body 001 and the top of the welding gun 101. Therefore, an alignment component is designed; Figure 8 and Figure 9 As shown, the alignment assembly includes a guide seat 27, an arc-shaped push plate 28, a connecting plate 29 and a second control switch 30. The guide seat 27 is connected to the bottom of the mounting frame 3, and the upper part of the guide seat 27 is slidably connected to the arc-shaped push plate 28. The right side of the arc-shaped push plate 28 contacts the upper end of the welding gun 101. The upper left part of the guide seat 27 is connected to the connecting plate 29. The shape of the connecting plate 29 is L-shaped, and the second control switch 30 is installed on the upper part of the connecting plate 29. The left side of the arc-shaped push plate 28 contacts the second control switch 30.

[0036] When the splint 7 drives the insulation nail body 001 to move to the left to the top of the welding gun 101, the insulation nail body 001 will contact the arc push plate 28. At this time, the insulation nail body 001 continues to move to the left, which will push the arc push plate 28 to move slightly to the left, causing the arc push plate 28 to press the second control switch 30. The second control switch 30 sends a signal. After receiving the signal, the controller 302 will immediately control the splint 7 to stop moving and release the insulation nail body 001, and then control the splint 7 to move to the right and reset. After the insulation nail body 001 is welded to the insulation board, the rebound effect of the second control switch 30 itself can push the arc push plate 28 to move slightly to the right and reset.

Claims

1. A thermal insulation nail welding device for heat preservation pipe construction, comprising: a heat preservation nail welding machine (1); characterized in that, The device further comprises: a first control switch (2) mounted on the welding gun (101); a mounting frame (3) slidably connected to the welding gun (101), and a first notch (301) is formed on the mounting frame (3); a controller (302) mounted on the outer wall of the mounting frame (3); a connecting spring (4) with two ends respectively connected to the welding gun (101) and the mounting frame (3); a first electric push rod (5) symmetrically mounted on the bottom of the mounting frame (3); and a moving seat (6) connected to the telescopic rod of the first electric push rod (5). A splint (7) is symmetrically slidably connected to the movable seat (6); a second electric push rod (8) is symmetrically mounted on the movable seat (6), and a telescopic rod of the second electric push rod (8) is connected to the splint (7); a rotating disk (9) is rotatably connected to the mounting frame (3); a separating block (10) is circumferentially spaced and connected to the top of the rotating disk (9) for separating the heat-insulating nail bodies (001) placed on the rotating disk (9); and a rotating assembly is arranged on the mounting frame (3) for driving the rotating disk (9) to rotate.

2. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 1, characterized in that: The rotating assembly includes: a servo motor (11) mounted on the mounting frame (3); a driving gear (12) connected to the output shaft of the servo motor (11); and a driven ring gear (13) connected to the bottom of the rotating disk (9), wherein the driven ring gear (13) is meshed with the driving gear (12).

3. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 1, characterized in that: It also includes: a blocking cover (14), which is fixed to the top of the installation frame (3) by magnetic attraction, and a guide groove (1401) and a second notch (1402) are opened at the bottom of the blocking cover (14), and the second notch (1402) is aligned with the first notch (301).

4. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 1, characterized in that: The invention also includes: a connecting seat (15) connected to the outer wall of the mounting frame (3) at circumferential intervals; a rotating frame (16) rotatably connected to the connecting seat (15); a torsion spring (17) with two ends respectively connected to the rotating frame (16) and the connecting seat (15); and a roller (18) rotatably connected to the rotating frame (16).

5. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 4, characterized in that: It also includes a rubber ring (19) symmetrically connected to both sides of the rotating frame (16), and the inner side of the rubber ring (19) is in contact with the rotating shaft of the roller (18).

6. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 4, characterized in that: The device further comprises: a connecting block (20) connected to the outer wall of the mounting frame (3) at circumferential intervals, and the connecting block (20) and the connecting seat (15) are staggered; a lifting rod (21) slidably connected to the connecting block (20); a square plate (22) connected to the top of the lifting rod (21); and a return spring (23) having two ends respectively connected to the square plate (22) and the connecting block (20).

7. A thermal insulation nail welding device for HVAC pipeline construction as claimed in claim 1, characterized in that: The device further comprises: a mounting frame (24) connected to the mounting frame (3); laser emitters (25) mounted on the mounting frame (24) at circumferential intervals, and circular holes (26) are circumferentially spaced apart on the mounting frame (3), and the circular holes (26) are located directly above the laser emitters (25).

8. A thermal insulation nail welding device for HVAC pipeline construction according to claim 1, characterized in that: The invention also includes: a guide seat (27) connected to the mounting frame (3); an arc-shaped push plate (28) slidably connected to the guide seat (27), and the arc-shaped push plate (28) contacts the welding gun (101); a connecting plate (29) connected to the side of the guide seat (27); and a second control switch (30) installed on the connecting plate (29), and the arc-shaped push plate (28) contacts the second control switch (30).

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