Automatic welding device for ship piping accessories

Abstract

The invention belongs to the technical field of welding, in particular to an automatic welding device for ship piping accessories, and provides the following scheme that the automatic welding device comprises a base, pipe fitting fixing mechanisms are arranged on the two sides of the top of the base, two side plates are welded to the top of the base, and a supporting plate is connected between the two side plates through bolts; pipe fitting welding rings are welded to the opposite sides of the two side plates correspondingly, a pipe fitting welding mechanism is arranged between the pipe fitting welding rings and the supporting plate, the pipe fitting welding mechanism is composed of a pipe fitting welding assembly and a transmission assembly, and the pipe fitting welding assembly and the transmission assembly are matched. The pipe fitting fixing mechanism comprises a supporting plate, a fixing frame, a clamping plate, a restraining clamp and a fastening bolt, and supporting columns are connected between the four corners of the bottom of the supporting plate and the top of the base through bolts. According to the pipeline welding device, the pipeline welding effect can be improved through rotation of the pipe fitting welding mechanism, and the situation that two pipelines are staggered in the welding process, and consequently welding of the pipelines is affected is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding, and more particularly to an automatic welding device for marine piping system accessories. Background Technology

[0002] In the complex shipbuilding process, the piping system plays a crucial role. It is not only the artery for the flow of various liquids and gases inside the ship, but also a key element in ensuring the normal operation and safety performance of the ship. The foundation of this system lies in the precise and stable connection between various pipes. Normally, the pipes are manufactured according to standard lengths, but in the actual installation process, in order to adapt to the complex layout and specific functional requirements inside the ship, it is often necessary to extend the pipes. At this time, welding technology becomes particularly important.

[0003] A search revealed Chinese patent application CN119566706A, which discloses an automatic welding device for ship piping system accessories. The device includes a base and a support plate fixedly connected to the base. It also includes a hollow cylinder rotatably mounted on the support plate, with four support rods surrounding the hollow cylinder; a pushing component mounted on the hollow cylinder and connected to the four support rods, used to drive the four support rods outward to support the branch pipe; by activating a drive motor, multiple support rods can be driven outward to support the branch pipe, while simultaneously driving a C-shaped buckle plate to deflect and fix the horizontal pipe, thus facilitating quick and easy simultaneous fixing of the branch pipe and the horizontal pipe. During the fixing process, an alignment component is used to move the branch pipe to align with the horizontal pipe, ensuring welding alignment. After the horizontal pipe and branch pipe are aligned, the drive motor is activated again to move the horizontal pipe away from the branch pipe, thereby forming a weld and improving the welding effect.

[0004] When extending two pipes by welding, the two pipe ends are usually joined together and welded by a welding mechanism. However, existing devices usually rotate the two pipes during the welding process, and the welding mechanism completes the welding of the two pipes during the rotation. However, the two pipes may become misaligned during the rotation, which will affect the welding between the two pipes. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic welding device for ship piping system accessories includes a base, on both sides of the top of the base are provided with pipe fitting fixing mechanisms, two side plates are welded to the top of the base, and a support plate is bolted between the two side plates, and a pipe fitting welding ring is welded to the opposite side of the two side plates, and a pipe fitting welding mechanism is provided between the pipe fitting welding ring and the support plate. The pipe fitting welding mechanism consists of a pipe fitting welding assembly and a transmission assembly, and the pipe fitting welding assembly and the transmission assembly cooperate with each other.

[0006] Preferably, the pipe fitting fixing mechanism includes a support plate, a fixing frame, a clamping plate, a constraint clamp, and a fastening bolt. The four corners of the bottom of the support plate are connected to the top of the base by bolts, and the support plate has a pipe fitting support groove. The inner wall of the pipe fitting support groove is provided with multiple anti-slip ridges. The top of the support plate is connected to the fixing frame by bolts. The top of the clamping plate is connected to the fixing frame by bolts, and a clamping spring is connected to the fixing frame by bolts. The bottom of the clamping plate is welded to the constraint clamp. The top of the fixing frame has a threaded hole that is threadedly connected to the fastening bolt. The bottom of the fastening bolt contacts the top of the clamping plate.

[0007] Preferably, the fixing frame has a positioning opening on both opposite sides, and a positioning block is slidably connected to the inner wall of the positioning opening, and the positioning block is fixedly connected to the clamping plate.

[0008] Preferably, the pipe welding assembly includes an annular slide plate, a fixed seat, a welding machine, a support, and a welding torch. The fixed seat is fixedly connected to the inner wall of the annular slide plate, the bottom of the fixed seat is fixedly connected to the welding machine, the support is fixed on one side of the annular slide plate, one side of the support is fixedly connected to the welding torch, a welding wire is provided between the welding torch and the welding machine, and an annular sliding opening is provided on the outer wall of the pipe welding ring, which is slidably connected to the annular slide plate.

[0009] Preferably, a constraint frame is bolted to one side of the support near the top, and pressure rollers are rotatably connected to opposite sides of the constraint frame via bearings. The welding wire is constrained to one side of the pressure roller, which is located above the welding gun.

[0010] Preferably, the transmission assembly includes a welding motor, two pulleys, a rotating shaft, a gear, and a gear ring. One side of the welding motor is bolted to one of the support plates, one end of the welding motor is fixedly connected to one of the pulleys, both ends of the rotating shaft are rotatably connected to the two support plates via bearings, the other pulley is fixedly sleeved on the outer wall of the rotating shaft, the two pulleys are rotatably connected to the belt, the gear is fixedly sleeved on the outer wall of the rotating shaft, and the gear ring is fixedly sleeved on the outer wall of the annular slide plate. The gear and the gear ring mesh with each other.

[0011] Preferably, a pipe cleaning mechanism is provided on one side of the annular slide plate, and the pipe cleaning mechanism includes a cleaning seat, a first hydraulic cylinder and a cleaning plate. One side of the cleaning seat is welded to the annular slide plate, one side of the cleaning seat is fixedly connected to the first hydraulic cylinder, and the other end of the first hydraulic cylinder is connected to the cleaning plate by bolts.

[0012] Preferably, the top of the cleaning plate is provided with an arc-shaped surface, and a plurality of cleaning filaments are provided on the arc-shaped surface, the cleaning filaments being made of an elastic and wear-resistant material.

[0013] Preferably, a scraping mechanism is provided on one side of the annular sliding plate, and the scraping mechanism and the pipe cleaning mechanism are vertically distributed.

[0014] Preferably, the scraping mechanism includes a connecting seat, a second hydraulic cylinder, a top plate, and a scraping plate. The connecting seat is fixedly connected to the inner wall of the annular sliding plate. The two ends of the second hydraulic cylinder are fixedly connected to the top plate and the connecting seat, respectively. The top of the top plate is connected to the scraping plate by bolts. The scraping plate is made of hard material and has multiple scraping protrusions on its top.

[0015] The beneficial effects of this invention are as follows: 1. This invention, through the establishment of a pipe fitting fixing mechanism and a pipe fitting welding mechanism, allows for the welding of two pipes. The two pipes are placed on two pipe fitting fixing mechanisms, which then secure them. After fixing, a transmission component is activated, causing the pipe fitting welding component to rotate around the outer wall of the pipe. During this rotation, the pipe fitting welding component performs welding on the two pipes. The rotation of the pipe fitting welding mechanism improves the welding effect and prevents misalignment between the two pipes during welding, which could affect the welding process. Furthermore, since this invention is used for welding pipe fittings for ships, the pipe length is increased. Longer pipes are difficult to rotate during welding; therefore, the rotation of the pipe fitting welding mechanism improves welding efficiency and prevents the length of the pipe from affecting the welding process. 2. This invention utilizes a pipe cleaning mechanism and a scraping mechanism. When the pipe welding mechanism rotates, the pipe cleaning mechanism rotates along with it. At this time, the first hydraulic cylinder is activated, moving the cleaning plate so that the cleaning brush cleans the weld joint of the two pipes, preventing metal nodules from forming during welding due to impurities on the pipe surface, thus affecting the welding quality. Simultaneously, the second hydraulic cylinder moves the scraping plate to one side of the pipe, where it scrapes away residual impurities, thereby improving the pipe's cleaning efficiency. The cleaning effect of the pipe is enhanced. At the same time, the friction between the scraper and the pipe generates heat before welding, which facilitates preheating of the pipe for welding, thereby further improving the welding effect, reducing the formation of metal nodules, slowing down the cooling rate after welding, which is conducive to the escape of hydrogen from the weld metal and avoids hydrogen-induced cracking. It also reduces the hardening degree of the weld and heat-affected zone, improving the crack resistance of the welded joint. In addition, preheating can reduce the temperature difference between the welded workpieces in the welding area, which reduces welding stress and welding strain rate, and helps to avoid welding cracks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an automatic welding device for ship piping system accessories proposed in this invention; Figure 2 This is a partial structural schematic diagram of an automatic welding device for ship piping system accessories proposed in this invention; Figure 3 This is a schematic diagram of the pipe welding mechanism of an automatic welding device for ship piping system accessories proposed in this invention; Figure 4 This is a schematic diagram of the pipe welding assembly structure of an automatic welding device for ship piping system accessories proposed in this invention; Figure 5 This is a schematic diagram of the transmission component structure of an automatic welding device for ship piping system accessories proposed in this invention; Figure 6 for Figure 5 The structural diagram at point A is presented in the text; Figure 7 This is a schematic diagram of the pipe fitting fixing mechanism of an automatic welding device for ship piping system accessories proposed in this invention; Figure 8 This is a schematic diagram of the scraping mechanism of an automatic welding device for ship piping accessories proposed in this invention.

[0017] In the attached diagram: 1. Base; 2. Pipe fitting fixing mechanism; 3. Side plate; 4. Support plate; 5. Pipe fitting welding ring; 6. Annular sliding mouth; 7. Annular sliding plate; 8. Pipe fitting welding mechanism; 9. Transmission assembly; 10. Support; 11. Welding torch; 12. Pipe fitting cleaning mechanism; 13. Scraping mechanism; 14. Fixed seat; 15. Welding machine; 16. Constraint frame; 17. Pressure roller; 18. Welding wire; 19. Cleaning seat; 20. First hydraulic cylinder; 21. Cleaning plate; 22. Gear ring; 23. Rotating shaft; 24. Gear; 25. Pulley; 26. Welding motor; 27. Belt; 28. Support plate; 29. ​​Support column; 30. Pipe fitting support groove; 31. Fixed frame; 32. Clamping plate; 33. Constraint clamp; 34. Fastening bolt; 35. Positioning port; 36. Positioning block; 37. Second hydraulic cylinder; 38. Top plate; 39. Scraping plate. Detailed Implementation

[0018] Example 1, referring to Figures 1-7 An automatic welding device for ship piping system accessories includes a base 1. Pipe fitting fixing mechanisms 2 are provided on both sides of the top of the base 1. Two side plates 3 are welded to the top of the base 1, and a support plate 4 is bolted between the two side plates 3. Pipe fitting welding rings 5 ​​are welded to opposite sides of the two side plates 3. A pipe fitting welding mechanism 8 is provided between the pipe fitting welding rings 5 ​​and the support plate 4. The pipe fitting welding mechanism 8 consists of a pipe fitting welding assembly and a transmission assembly 9. The pipe fitting welding assembly and the transmission assembly 9 cooperate with each other. The rotation of the pipe fitting welding mechanism 8 can improve the welding effect of the pipe and avoid the impact on the welding of the pipe due to misalignment between the two pipes during the welding process.

[0019] Based on the above, the pipe fitting fixing mechanism 2 includes a support plate 28, a fixing frame 31, a clamping plate 32, a constraint clamp 33, and a fastening bolt 34. The four corners of the bottom of the support plate 28 are connected to the top of the base 1 by bolts with support columns 29. The support plate 28 has a pipe fitting support groove 30. The inner wall of the pipe fitting support groove 30 is provided with multiple anti-slip ridges. The top of the support plate 28 is connected to the fixing frame 31 by bolts. The top of the clamping plate 32 is connected to the fixing frame 31 by bolts with a clamping spring. The bottom of the clamping plate 32 is welded to the constraint clamp 33. The top of the fixing frame 31 has a threaded hole that is threaded to the fastening bolt 34. The bottom of the fastening bolt 34 is in contact with the top of the clamping plate 32.

[0020] Based on the above, positioning openings 35 are provided on both sides of the fixed frame 31, and positioning blocks 36 are slidably connected to the inner wall of the positioning openings 35. The positioning blocks 36 are fixedly connected to the clamping plate 32.

[0021] Based on the above, the pipe welding assembly includes an annular slide plate 7, a fixed seat 14, a welding machine 15, a support 10, and a welding torch 11. The fixed seat 14 is fixedly connected to the inner wall of the annular slide plate 7, and the bottom of the fixed seat 14 is fixedly connected to the welding machine 15. The support 10 is fixed on one side of the annular slide plate 7, and one side of the support 10 is fixedly connected to the welding torch 11. A welding wire 18 is provided between the welding torch 11 and the welding machine 15. An annular sliding opening 6 is opened on the outer wall of the pipe welding ring 5, and the annular sliding opening 6 is slidably connected to the annular slide plate 7.

[0022] Based on the above, a constraint frame 16 is bolted to one side of the support 10 near the top, and a pressure roller 17 is rotatably connected to the opposite sides of the constraint frame 16 via bearings. The welding wire 18 is constrained to one side of the pressure roller 17, and the pressure roller 17 is located above the welding gun 11.

[0023] Based on the above, the transmission assembly 9 includes a welding motor 26, two pulleys 25, a rotating shaft 23, a gear 24, and a gear ring 22. One side of the welding motor 26 is bolted to one of the support plates 4, one end of the welding motor 26 is fixedly connected to one of the pulleys 25, and both ends of the rotating shaft 23 are rotatably connected to the two support plates 4 through bearings. The other pulley 25 is fixedly sleeved on the outer wall of the rotating shaft 23, and the two pulleys 25 are rotatably connected to the belt 27. The gear 24 is fixedly sleeved on the outer wall of the rotating shaft 23, and the gear ring 22 is fixedly sleeved on the outer wall of the annular slide plate 7. The gear 24 and the gear ring 22 mesh with each other.

[0024] Based on the above, a pipe cleaning mechanism 12 is provided on one side of the annular slide plate 7. The pipe cleaning mechanism 12 includes a cleaning seat 19, a first hydraulic cylinder 20 and a cleaning plate 21. One side of the cleaning seat 19 is welded to the annular slide plate 7, and one side of the cleaning seat 19 is fixedly connected to the first hydraulic cylinder 20. The other end of the first hydraulic cylinder 20 is connected to the cleaning plate 21 by bolts.

[0025] Based on the above, the top of the cleaning plate 21 is provided with an arc-shaped surface, and multiple cleaning filaments are provided on the arc-shaped surface. The cleaning filaments are made of elastic and wear-resistant material.

[0026] Example 2, refer to Figures 1-8 An automatic welding device for ship piping system accessories, compared with Embodiment 1, has a scraping mechanism 13 provided on one side of the annular slide plate 7, and the scraping mechanism 13 and the pipe cleaning mechanism 12 are vertically distributed.

[0027] Based on the above, the scraping mechanism 13 includes a connecting seat, a second hydraulic cylinder 37, a top plate 38, and a scraping plate 39. The connecting seat is fixedly connected to the inner wall of the annular sliding plate 7. The two ends of the second hydraulic cylinder 37 are fixedly connected to the top plate 38 and the connecting seat, respectively. The top of the top plate 38 is connected to the scraping plate 39 by bolts. The scraping plate 39 is made of hard material and has multiple scraping protrusions on its top. The friction between the scraping plate 39 and the pipe generates heat before welding, which facilitates preheating of the pipe for welding. This further improves the welding effect of the pipe, reduces the generation of metal nodules, slows down the cooling rate after welding, facilitates the escape of hydrogen from the weld metal, avoids hydrogen-induced cracking, and also reduces the hardening degree of the weld and heat-affected zone, improving the crack resistance of the welded joint. In addition, preheating can reduce the temperature difference between the welded workpieces in the welding area, which reduces welding stress and welding strain rate, thus helping to avoid welding cracks.

[0028] In summary, with the help of the above-mentioned technical solution of the present invention: when welding two pipes, the two pipes are placed on two pipe fixing mechanisms 2, and the two pipes are fixed by the pipe fixing mechanisms 2. After the fixing is completed, the transmission component 9 is activated, and the transmission component 9 drives the pipe welding component to rotate, so that the pipe welding component rotates around the outer wall of the pipe. During the rotation, the pipe welding component welds the two pipes. The rotation of the pipe welding mechanism 8 can improve the welding effect of the pipes. When the pipe welding mechanism 8 rotates, the pipe cleaning mechanism 12 will rotate with the rotation of the pipe welding mechanism 8. At this time, the first hydraulic cylinder 20 is activated, and the first hydraulic cylinder 20 drives the cleaning plate 21 to move, so that the cleaning brush cleans the weld joint of the two pipes, preventing the formation of metal nodules during the welding of the pipes due to impurities on the surface of the pipes, which would affect the welding quality of the pipes. At the same time, the second hydraulic cylinder 37 drives the scraper 39 to move to one side of the pipe. At this time, the scraper 39 can scrape off the remaining impurities, thereby improving the cleaning effect of the pipes.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic welding device for ship piping system accessories, comprising a base (1), characterized in that, The base (1) has pipe fixing mechanisms (2) on both sides of its top. The base (1) has two side plates (3) welded to its top. The two side plates (3) are connected by bolts to a support plate (4). The two side plates (3) are welded to opposite sides with pipe welding rings (5). A pipe welding mechanism (8) is provided between the pipe welding rings (5) and the support plate (4). The pipe welding mechanism (8) consists of a pipe welding assembly and a transmission assembly (9). The pipe welding assembly and the transmission assembly (9) cooperate with each other.

2. The automatic welding device for ship piping system accessories according to claim 1, characterized in that, The pipe fitting fixing mechanism (2) includes a support plate (28), a fixing frame (31), a clamping plate (32), a constraint clamp (33), and a fastening bolt (34). The four corners of the bottom of the support plate (28) are connected to the top of the base (1) by bolts with support columns (29). The support plate (28) has a pipe fitting support groove (30). The inner wall of the pipe fitting support groove (30) is provided with multiple anti-slip ridges. The top of the support plate (28) is connected to the fixing frame (31) by bolts. The top of the clamping plate (32) is connected to the fixing frame (31) by bolts with a clamping spring. The bottom of the clamping plate (32) is welded to the constraint clamp (33). The top of the fixing frame (31) has a threaded hole through it. The threaded hole is threadedly connected to the fastening bolt (34). The bottom of the fastening bolt (34) is in contact with the top of the clamping plate (32).

3. The automatic welding device for ship piping system accessories according to claim 2, characterized in that, The fixing frame (31) has a positioning port (35) through it on both sides, and a positioning block (36) is slidably connected to the inner wall of the positioning port (35). The positioning block (36) is fixedly connected to the clamp (32).

4. The automatic welding device for ship piping system accessories according to claim 1, characterized in that, The pipe welding assembly includes an annular slide plate (7), a fixed seat (14), a welding machine (15), a support (10), and a welding torch (11). The fixed seat (14) is fixedly connected to the inner wall of the annular slide plate (7), and the bottom of the fixed seat (14) is fixedly connected to the welding machine (15). The support (10) is fixed on one side of the annular slide plate (7), and one side of the support (10) is fixedly connected to the welding torch (11). A welding wire (18) is provided between the welding torch (11) and the welding machine (15). An annular sliding opening (6) is opened on the outer wall of the pipe welding ring (5), and the annular sliding opening (6) is slidably connected to the annular slide plate (7).

5. An automatic welding device for ship piping system accessories according to claim 4, characterized in that, The support (10) is bolted to a constraint frame (16) near the top, and the two sides of the constraint frame (16) are rotatably connected to a pressure roller (17) via bearings. The welding wire (18) is constrained to one side of the pressure roller (17), and the pressure roller (17) is located above the welding gun (11).

6. An automatic welding device for ship piping system accessories according to claim 4, characterized in that, The transmission assembly (9) includes a welding motor (26), two pulleys (25), a rotating shaft (23), a gear (24), and a gear ring (22). One side of the welding motor (26) is connected to one of the support plates (4) by bolts. One end of the welding motor (26) is fixedly connected to one of the pulleys (25). Both ends of the rotating shaft (23) are rotatably connected to the two support plates (4) through bearings. The other pulley (25) is fixedly sleeved on the outer wall of the rotating shaft (23). The two pulleys (25) are rotatably connected to the belt (27). The gear (24) is fixedly sleeved on the outer wall of the rotating shaft (23). The gear ring (22) is fixedly sleeved on the outer wall of the annular slide plate (7). The gear (24) and the gear ring (22) mesh with each other.

7. An automatic welding device for ship piping system accessories according to claim 4, characterized in that, A pipe cleaning mechanism (12) is provided on one side of the annular slide plate (7), and the pipe cleaning mechanism (12) includes a cleaning seat (19), a first hydraulic cylinder (20) and a cleaning plate (21). One side of the cleaning seat (19) is welded to the annular slide plate (7), and one side of the cleaning seat (19) is fixedly connected to the first hydraulic cylinder (20). The other end of the first hydraulic cylinder (20) is connected to the cleaning plate (21) by bolts.

8. An automatic welding device for ship piping system accessories according to claim 7, characterized in that, The top of the cleaning plate (21) is provided with an arc-shaped surface, and multiple cleaning filaments are provided on the arc-shaped surface. The cleaning filaments are made of elastic and wear-resistant material.

9. An automatic welding device for ship piping system accessories according to claim 7, characterized in that, A scraping mechanism (13) is provided on one side of the annular slide plate (7), and the scraping mechanism (13) and the pipe cleaning mechanism (12) are vertically distributed.

10. An automatic welding device for ship piping system accessories according to claim 9, characterized in that, The scraping mechanism (13) includes a connecting seat, a second hydraulic cylinder (37), a top plate (38) and a scraping plate (39). The connecting seat is fixedly connected to the inner wall of the annular slide plate (7). The two ends of the second hydraulic cylinder (37) are fixedly connected to the top plate (38) and the connecting seat respectively. The top of the top plate (38) is connected to the scraping plate (39) by bolts. The scraping plate (39) is made of hard material and has multiple scraping protrusions on its top.

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