A pressure pipe spot welding set device

Abstract

This invention belongs to the field of spot welding assembly technology, specifically referring to a pressure pipeline spot welding assembly device, including an assembly platform, an internal support type assembly mechanism, and a weld testing type clamping mechanism. The internal support type assembly mechanism includes an internal fixing component, a positioning component, an internal clamping component, and an assembly component. The internal fixing component is located on the upper wall of the assembly platform, the positioning component is located at one end of the internal fixing component, the internal clamping component is located at the end of the internal fixing component away from the positioning component, and the assembly component is located at the end of the internal clamping component away from the positioning component. The pressure pipeline spot welding assembly device provided by this invention distributes the vertical load of the pipeline through a static support structure, and improves the coaxiality of the pipeline by combining it with a magnetic repulsion radial expansion centering structure. Simultaneously, it employs the same axial sliding magnet drive mechanism, which can quickly output impact loads to simulate working condition vibrations after spot welding, achieving in-situ screening of the spot weld strength and simplifying the production process.

Description

Technical Field

[0001] This invention belongs to the field of spot welding assembly technology, specifically referring to a pressure pipeline spot welding assembly device. Background Technology

[0002] Pressure pipeline spot welding assembly is a process in which two pipeline components are precisely assembled and fixed by locating spot welding before formal welding. It is used to ensure the accuracy of assembly dimensions and the quality of the formed weld. The fusion zone of the locating spot welding is a component of the formal weld. The quality of spot welding directly determines the pressure-bearing safety of the final welded joint.

[0003] The existing pressure pipeline spot welding assembly has the following problems: Existing pressure pipeline internal support spot welding assembly tooling generally adopts a spring internal expansion clamping structure. When assembling heavy pressure pipelines, the entire weight of the pipeline is borne by the internal support spring. As the spring compression increases, the pipeline assembly center will be lower than the reference center of the fixed pipe axis of the equipment, resulting in coaxiality misalignment defects and significantly reducing the accuracy of spot welding assembly. At the same time, traditional tooling only has the function of assembly positioning and cannot quickly screen the weld formation strength on site after spot welding. It needs to be transported separately to a dedicated inspection station, which is cumbersome and has low production efficiency. In summary, it cannot meet the current usage requirements of the pressure pipeline spot welding group equipment. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a pressure pipeline spot welding assembly equipment. The equipment uses a static support structure to share the vertical load of the pipeline and a magnetic repulsion radial expansion centering structure to improve the coaxiality of the pipeline. At the same time, it uses the same axial sliding magnet drive mechanism, which can quickly output impact load to simulate working condition vibration after spot welding, realize in-situ screening of spot weld strength, and simplify the production process.

[0005] The technical solution adopted in this solution is as follows: This solution proposes a pressure pipeline spot welding assembly equipment, including an assembly platform, an internal support type assembly mechanism, and a welding test type clamping mechanism. The internal support type assembly mechanism includes an internal fixing component, a positioning component, an internal clamping component, and an assembly component. The internal fixing component is located on the upper wall of the assembly platform, the positioning component is located at one end of the internal fixing component, the internal clamping component is located at the end of the internal fixing component away from the positioning component, and the assembly component is located at the end of the internal clamping component away from the positioning component. The welding test type clamping mechanism includes a driving component and a jacking component. The driving component is located on the side of the assembly platform away from the internal fixing component, and the jacking component is located at the end of the internal fixing component away from the driving component.

[0006] As a further preferred embodiment of the proposed solution, the internal fixing assembly includes a fixed tube shaft, guide sleeves, guide posts, connecting plates, and internal fixing rounded corner plates. The fixed tube shaft is located on the top side wall of the assembly platform. Multiple sets of guide sleeves are disposed through the fixed tube shaft at the end away from the assembly platform. The guide posts are slidably disposed inside the guide sleeves. The connecting plates are disposed on the upper wall of the guide posts. Multiple sets of internal fixing rounded corner plates are disposed on the upper wall of the connecting plates. The internal fixing spring is disposed between the guide sleeves and the connecting plates on the outside of the guide posts. The positioning assembly includes a positioning block, an annular groove, a threaded sleeve, and an adjusting screw. The positioning block is slidably disposed at the end of the fixed tube shaft near the assembly platform. Multiple sets of annular grooves are disposed at one end of the positioning block, and the multiple sets of annular grooves are arranged in a stepped manner along the axial direction of the positioning block, with their outer diameter decreasing step by step to accommodate different pipe diameters. The force conduit includes a threaded sleeve symmetrically positioned on the upper and lower walls of the positioning block. An adjusting screw passes through the assembly platform and is located inside the threaded sleeve, with the adjusting screw threadedly connected to the threaded sleeve. The inner clamping assembly includes an inner clamping slide rod, an inner clamping sleeve, an annular magnet, and an arc-shaped magnetic block. The inner clamping slide rod is located on the inner wall of the fixed pipe shaft away from the assembly platform. The inner clamping sleeve slides through the assembly platform and is located on the outer side of the inner clamping slide rod. Multiple sets of annular magnets are equidistantly positioned on the outer side of the inner clamping sleeve. The arc-shaped magnetic block is located on the guide post near the annular magnet, and the arc-shaped magnetic block and the annular magnet have opposite poles. The mating assembly includes a mating seat and a mating rounded corner plate. The mating seat is located on the side of the connecting plate away from the assembly platform. The mating rounded corner plate is located on the side wall of the mating seat, and the top of the mating seat is flush with the top of the inner fixed rounded corner plate.

[0007] Preferably, the drive assembly includes a drive frame and a drive cylinder. The drive frame is located on the side of the assembly platform away from the fixed tube shaft, and the drive cylinder is located at the end of the drive frame away from the assembly platform, with the output end of the drive cylinder connected to the inner clamping sleeve. The jacking pipe assembly includes a jacking pipe groove, a jacking pipe plate, a jacking pipe column, and a jacking pipe magnet. The jacking pipe groove is located on the upper wall of the mating rounded corner plate above the fixed tube shaft, and the jacking pipe groove is open at one end. The jacking pipe plate is fitted inside the jacking pipe groove, and the upper wall of the jacking pipe plate is flush with the upper wall of the mating rounded corner plate. The jacking pipe column passes through the mating rounded corner plate and the fixed tube shaft and is located on the bottom wall of the jacking pipe plate. The jacking pipe magnet is located on the side of the jacking pipe column away from the jacking pipe plate, and the jacking pipe magnet and the annular magnet have the same pole.

[0008] Specifically, the side wall of the assembly table is equipped with a controller, which is electrically connected to the drive cylinder.

[0009] When in use, the drive cylinder is in a fully retracted state, the annular magnet and the arc-shaped magnetic block are misaligned along the axis, the inner spring remains in a naturally extended state, the axial distance between the top tube magnet and the annular magnet is large, and there is no obvious repulsive force between the two. The operator rotates the adjusting screw according to the length of the straight pipe section, which drives the positioning block to slide along the fixed pipe shaft to the appropriate position; the straight pipe section is then inserted from the outer end of the fixed pipe shaft, so that the inner wall of the straight pipe section fits the outer wall of the corresponding specification annular groove. The positioning block and the annular groove form a bottom static support for the straight pipe section, sharing the vertical weight of the straight pipe and reducing the vertical load borne by the internal spring. The controller controls the drive cylinder to extend slightly, causing the inner clamping sleeve to slide axially along the inner clamping rod, aligning the annular magnet and the arc-shaped magnetic block axially. The annular magnet and the arc-shaped magnetic block repel each other, pushing the guide column to expand radially outward along the guide sleeve. The guide column, through the connecting plate, drives the inner fixed rounded corner plate to press against the inner wall of the straight pipe section, completing the straight pipe centering and clamping. Subsequently, the bent pipe section is fitted onto the outside of the mating rounded corner plate, so that the end face of the bent pipe is in close contact with the end face of the straight pipe, and the operator performs positioning spot welding on the butt joint.

[0010] The beneficial effects achieved by this solution using the above structure are as follows: Compared with existing technologies, this solution combines an internal support-type mating mechanism with a welding-type clamping mechanism. It utilizes a positioning block and an annular groove for initial positioning (static support) of the straight pipe. The straight pipe is fitted onto the outside of the annular groove, and the positioning block supports the straight pipe, reducing the downward pressure on the internal spring above the fixed pipe axis. When the bent pipe is fitted onto the outside of the mating rounded corner plate, the repulsive force of the annular magnet on the arc-shaped magnetic block is entirely used to support the downward weight of the bent pipe, ensuring the coaxiality of the straight and bent pipes, thereby significantly improving the spot welding effect on pressure pipelines. Furthermore, after the straight pipe and the bend are spot welded, the output end of the drive cylinder extends to drive the annular magnet to face the jacking pipe magnet. The jacking pipe magnet pushes the jacking pipe column and jacking pipe plate to impact the bend, simulating conventional vibration conditions to test the structural strength of the spot welded part. This improves the efficiency of the spot welded group in terms of structural use and quality control to a certain extent. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this solution; Figure 2 This is the front perspective stereoscopic view of this solution; Figure 3 This is a schematic diagram of the combined structure of the counter-platform and the internal support type engagement mechanism in this scheme; Figure 4 This is a schematic diagram of the internal components of this solution; Figure 5 This is a schematic diagram of the positioning components in this solution; Figure 6 This is the main view of this solution; Figure 7 This is a side view of the design. Figure 8 This is a top view of the plan; Figure 9for Figure 7 Sectional view of AA section; Figure 10 for Figure 9 Enlarged structural view of part B; Figure 11 for Figure 9 Enlarged structural view of section C; Figure 12 for Figure 3 Enlarged structural view of part D.

[0012] The components are as follows: 1. Alignment platform; 2. Internal support type alignment mechanism; 3. Internal fixation component; 4. Fixed pipe shaft; 5. Guide sleeve; 6. Guide column; 7. Connecting plate; 8. Internal fixation rounded corner plate; 9. Positioning component; 10. Positioning block; 11. Annular groove; 12. Threaded sleeve; 13. Adjusting screw; 14. Internal clamping component; 15. Internal clamping slide rod; 16. Internal clamping slide sleeve; 17. Annular magnet; 18. Arc-shaped magnetic block; 19. Alignment component; 20. Alignment seat; 21. Alignment rounded corner plate; 22. Welding type loosening and loosening mechanism; 23. Drive component; 24. Drive frame; 25. Drive cylinder; 26. Jacking pipe assembly; 27. Jacking pipe groove; 28. Jacking pipe plate; 29. ​​Jacking pipe column; 30. Jacking pipe magnet; 31. Controller; 32. Internal fixation spring.

[0013] The accompanying drawings are provided to further understand the present solution and form part of the specification. They are used together with the embodiments of the present solution to explain the present solution and do not constitute a limitation thereof. Detailed Implementation

[0014] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this solution, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this solution without creative effort are within the scope of protection of this solution.

[0015] In the description of this solution, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this solution.

[0016] like Figures 1-12As shown, the proposed pressure pipeline spot welding assembly equipment includes an assembly platform 1, an internal support type assembly mechanism 2, and a welding test type clamping mechanism 22. The internal support type assembly mechanism 2 includes an internal fixing component 3, a positioning component 9, an internal clamping component 14, and an assembly component 19. The internal fixing component 3 is located on the upper wall of the assembly platform 1. The positioning component 9 is located at one end of the internal fixing component 3. The internal clamping component 14 is located at the end of the internal fixing component 3 away from the positioning component 9. The assembly component 19 is located at the end of the internal clamping component 14 away from the positioning component 9. The welding test type clamping mechanism 22 includes a driving component 23 and a jacking component 26. The driving component 23 is located on the side of the assembly platform 1 away from the internal fixing component 3. The jacking component 26 is located at the end of the internal fixing component 3 away from the driving component 23.

[0017] The internal fixing component 3 includes a fixed pipe shaft 4, guide sleeves 5, guide posts 6, connecting plates 7, and internal fixing rounded corner plates 8. The fixed pipe shaft 4 is located on the top side wall of the assembly platform 1. Multiple sets of guide sleeves 5 are inserted through the fixed pipe shaft 4 at the end away from the assembly platform 1. The guide posts 6 are slidably located inside the guide sleeves 5. The connecting plates 7 are located on the upper wall of the guide posts 6. Multiple sets of internal fixing rounded corner plates 8 are located on the upper wall of the connecting plates 7. The internal fixing spring 32 is located between the guide sleeves 5 and the connecting plates 7 on the outside of the guide posts 6. The positioning component 9 includes a positioning block 10, an annular groove 11, a threaded sleeve 12, and an adjusting screw 13. The positioning block 10 is slidably located at the end of the fixed pipe shaft 4 near the assembly platform 1. Multiple sets of annular grooves 11 are located at one end of the positioning block 10, and the multiple sets of annular grooves 11 are arranged in a stepped manner along the axial direction of the positioning block 10, with their outer diameter decreasing step by step to accommodate pressure pipes of different diameters. The threaded sleeves 12 are symmetrical vertically. The adjusting screw 13, located on the upper and lower walls of the positioning block 10, passes through the assembly platform 1 and is disposed inside the threaded sleeve 12, and is threadedly connected to the threaded sleeve 12; the inner clamping assembly 14 includes an inner clamping slide rod 15, an inner clamping sleeve 16, an annular magnet 17, and an arc-shaped magnetic block 18. The inner clamping slide rod 15 is located on the inner wall of the end of the fixed tube shaft 4 away from the assembly platform 1, and the inner clamping sleeve 16 slides through the assembly platform 1 and is slidably disposed on the outer side of the inner clamping slide rod 15. The annular magnets 17 are equidistantly arranged on the outside of the inner clamping sleeve 16. The arc-shaped magnetic block 18 is arranged on the side of the guide post 6 near the annular magnet 17, and the arc-shaped magnetic block 18 and the annular magnet 17 are arranged with opposite poles. The mating assembly 19 includes a mating seat 20 and a mating rounded corner plate 21. The mating seat 20 is arranged on the side of the connecting plate 7 away from the mating platform 1. The mating rounded corner plate 21 is arranged on the side wall of the mating seat 20, and the top of the mating seat 20 is flush with the top of the inner fixed rounded corner plate 8.

[0018] The drive assembly 23 includes a drive frame 24 and a drive cylinder 25. The drive frame 24 is located on the side of the assembly platform 1 away from the fixed tube shaft 4, and the drive cylinder 25 is located at the end of the drive frame 24 away from the assembly platform 1, with its output end connected to the inner clamping sleeve 16. The jacking pipe assembly 26 includes a jacking pipe groove 27, a jacking pipe plate 28, a jacking pipe column 29, and a jacking pipe magnet 30. The jacking pipe groove 27 is located on the fixed tube shaft 4. The upper wall of the square mating rounded corner plate 21 is provided, and the top tube groove 27 is provided with an opening at one end. The top tube plate 28 is fitted inside the top tube groove 27, and the upper wall of the top tube plate 28 is flush with the upper wall of the mating rounded corner plate 21. The top tube column 29 passes through the mating rounded corner plate 21 and the fixed tube shaft 4 and is provided on the bottom wall of the top tube plate 28. The top tube magnet 30 is provided on the side of the top tube column 29 away from the top tube plate 28, and the top tube magnet 30 and the annular magnet 17 are provided with the same pole.

[0019] The side wall of the assembly platform 1 is equipped with a controller 31, which is electrically connected to the drive cylinder 25.

[0020] In specific use, in the first embodiment, in the initial state, the drive cylinder 25 is fully retracted, the annular magnet 17 and the arc-shaped magnetic block 18 are axially misaligned, the inner spring 32 is naturally extended, the adjusting screw 13 is rotated according to the length of the straight pipe, and the positioning block 10 is moved to the appropriate position, the straight pipe is fitted into the fixed pipe shaft 4, so that the inner wall of the straight pipe fits the outer wall of the corresponding specification annular groove 11, and the positioning block 10 forms a vertical static support for the straight pipe and shares the weight of the pipe. The controller 31 outputs a signal to control the drive cylinder 25 to extend slightly, the inner clamping sleeve 16 slides forward, the annular magnet 17 and the arc-shaped magnetic block 18 are axially aligned, the opposite poles repel each other and push the guide column 6 to expand radially outward, the inner fixed rounded corner plate 8 presses the inner wall of the straight pipe to center it, and the bent pipe is sleeved on the outside of the mating rounded corner plate 21 so that the end faces of the straight pipe and the bent pipe are in contact, and the operator completes the circumferential seam positioning spot welding; The controller 31 controls the drive cylinder 25 to extend quickly and completely. The inner sliding sleeve 16 drives the annular magnet 17 forward past the area of ​​the arc-shaped magnetic block 18. The annular magnet 17 is axially aligned with the lower jacking pipe magnet 30. The two repel each other with the same poles, generating an instantaneous upward impact force. The jacking pipe magnet 30 drives the jacking pipe plate 28 to impact the inner wall of the bend pipe through the jacking pipe column 29. The vibration of the simulated working condition is used to screen for weld defects. The impact load is preset to be lower than the weld failure limit, and only qualitative screening is performed. After the impact test is completed, the controller 31 controls the drive cylinder 25 to retract completely, the annular magnet 17 and the arc-shaped magnetic block 18 are misaligned again, the inner fixed spring 32 rebounds and drives the inner fixed rounded corner plate 8 to retract and loosen the pipe, remove the processed pipe, and enter the next set of workpiece cycle operation. Example 2: The main structure of this example is completely the same as that of Example 1. The difference is that the ring magnet 17 is replaced with a ring electromagnet. The power supply control line of the electromagnet is connected to the controller 31. The controller 31 can change the magnetic field strength of the electromagnet by adjusting the output current.

[0021] In actual production, when assembling thick-walled and heavy pipes, the controller increases the output current to increase the radial repulsion between the electromagnet and the arc-shaped magnetic block 18, thereby increasing the internal support centering clamping force. When processing thin-walled and small-diameter pipes, the output current is reduced to decrease the clamping force and avoid damaging the inner wall of the pipe. In the weld inspection process, the current can be increased to increase the vertical impact load as needed, which can be adapted to the higher weld strength screening requirements of high pressure and thick-walled pressure pipelines. The rest of the assembly, spot welding and unloading process is exactly the same as in Example 1. The above operations can be repeated for the next use.

[0022] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] The present solution and its implementation methods have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present solution; the actual structure is not limited to this. In conclusion, if a person skilled in the art, inspired by this description, designs a similar structure and embodiment without departing from the inventive intent of this solution, such design should fall within the protection scope of this solution.

Claims

1. A pressure pipeline spot welding assembly device, comprising an assembly table, characterized in that: It also includes an internal support type mating mechanism and a welding test type loosening and clamping mechanism. The internal support type mating mechanism includes an internal fixing component, a positioning component, an internal clamping component and a mating component. The internal fixing component is located on the upper wall of the assembly platform, the positioning component is located at one end of the internal fixing component, the internal clamping component is located at the end of the internal fixing component away from the positioning component, and the mating component is located at the end of the internal clamping component away from the positioning component. The welding test type loosening and clamping mechanism includes a driving component and a jacking pipe component. The driving component is located on the side of the assembly platform away from the internal fixing component, and the jacking pipe component is located at the end of the internal fixing component away from the driving component. The internal fasteners include a fixed tube shaft; The inner clamping assembly includes an inner clamping sleeve and a ring magnet; The mating assembly includes mating fillet plates; The drive assembly includes a drive frame and a drive cylinder. The drive frame is located on the side of the assembly platform away from the fixed tube shaft, and the drive cylinder is located at the end of the drive frame away from the assembly platform. The output end of the drive cylinder is connected to the inner clamping sleeve. The pipe jacking assembly includes a pipe jacking groove, a pipe jacking plate, a pipe jacking column, and a pipe jacking magnet; The jacking pipe groove is located on the upper wall of the mating rounded corner plate above the fixed pipe shaft. The jacking pipe plate is fitted inside the jacking pipe groove, and the upper wall of the jacking pipe plate is flush with the upper wall of the mating rounded corner plate. The jacking pipe column passes through the mating rounded corner plate and the fixed pipe shaft and is located on the bottom wall of the jacking pipe plate. The jacking pipe magnet is located on the side of the jacking pipe column away from the jacking pipe plate, and the jacking pipe magnet and the annular magnet are set with the same pole.

2. The pressure pipeline spot welding assembly equipment according to claim 1, characterized in that: The internal fixation assembly also includes a guide sleeve, a guide post, a connecting plate, an internal fixation spring, and an internal fixation rounded corner plate. The fixed tube shaft is located on the top side wall of the assembly platform. Multiple sets of the guide sleeves are disposed through the fixed tube shaft at the end away from the assembly platform. The guide post is slidably disposed inside the guide sleeve. The connecting plate is disposed on the upper wall of the guide post. Multiple sets of the internal fixation rounded corner plates are disposed on the upper wall of the connecting plate. The internal fixation spring is disposed between the guide sleeve and the connecting plate on the outside of the guide post.

3. The pressure pipeline spot welding assembly equipment according to claim 1, characterized in that: The positioning assembly includes a positioning block, an annular groove, a threaded sleeve, and an adjusting screw. The positioning block is slidably disposed at one end of the fixed pipe shaft near the assembly platform. Multiple annular grooves are disposed at one end of the positioning block, and the multiple annular grooves are arranged in a stepped manner along the axial direction of the positioning block, with their outer diameter decreasing step by step to accommodate pressure pipelines of different diameters. The threaded sleeve is symmetrically disposed on the upper and lower walls of the positioning block. The adjusting screw passes through the assembly platform and is disposed inside the threaded sleeve, and the adjusting screw is threadedly connected to the threaded sleeve.

4. The pressure pipeline spot welding assembly equipment according to claim 2, characterized in that: The inner clamping assembly also includes an inner clamping slide rod and an arc-shaped magnetic block. The inner clamping slide rod is located on the inner wall of the fixed tube shaft away from the assembly platform. The inner clamping sleeve is slidably disposed on the outside of the inner clamping slide rod through the assembly platform. Multiple sets of the annular magnets are equidistantly disposed on the outside of the inner clamping sleeve. The arc-shaped magnetic block is disposed on the side of the guide post close to the annular magnet, and the arc-shaped magnetic block and the annular magnet are arranged with opposite poles.

5. A pressure pipeline spot welding assembly device according to claim 2, characterized in that: The mating assembly also includes a mating seat, which is located on the side of the connecting plate away from the mating platform. The mating rounded corner plate is located on the side wall of the mating seat, and the top of the mating seat is flush with the top of the inner fixed rounded corner plate.

6. The pressure pipeline spot welding assembly equipment according to claim 1, characterized in that: The top tube groove is open at one end.

7. The pressure pipeline spot welding assembly equipment according to claim 1, characterized in that: The side wall of the assembly platform is equipped with a controller, which is electrically connected to the drive cylinder.

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