Alloy steel pipe welding machining equipment

Abstract

The invention relates to the technical field of steel pipe welding, in particular to alloy steel pipe welding machining equipment which comprises a base and a machine shell arranged at the top of the base in a sliding mode and further comprises a pretreatment mechanism, a stable conveying and rotating mechanism and a welding mechanism. The pretreatment mechanism is arranged at the top of the base and comprises a mounting seat, a first rotating fluted disc, a first rotating block, a first sliding seat and a grinding roller; the mounting seats are respectively arranged at the top of the base, and a circular opening for an alloy steel pipe to penetrate through is formed in the side of each mounting seat; the first rotating fluted disc is rotationally arranged at the top of the mounting seat and is positioned above the base; the first rotating block is arranged beside the first rotating fluted disc; the first sliding seat is slidably arranged on the top of the first rotating block. According to the technical scheme, through the pretreatment mechanism, it is ensured that no rust remains outside the to-be-welded alloy steel pipe in the early welding stage, and therefore the welding quality of the alloy steel pipe in the later stage is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe welding, and specifically relates to a welding processing equipment for alloy steel pipes. Background Art

[0002] In the field of new energy vehicle manufacturing, alloy steel pipes are widely used in key components such as battery thermal management system pipelines and drive motor cooling pipelines due to their high strength, corrosion resistance, and good mechanical properties. However, during the actual welding process, rust often exists on the surface of alloy steel pipes, which poses a serious threat to the welding quality. Rust is mainly composed of iron oxide, and its presence not only reduces the strength and stability of the welded joint, but may also cause defects such as pores and slag inclusions during welding, thereby affecting the overall performance and sealing of the joint.

[0003] In the prior art, when welding alloy steel pipes for new energy vehicles, if the surface rust is not thoroughly removed, a large amount of gas will be generated when the rust is heated during the welding process. These gases cannot escape in the weld seam and ultimately form pores. The presence of pores will significantly reduce the load-bearing capacity of the welded joint and may lead to the generation of cracks. In addition, rust may also cause unstable welding current and affect the welding quality. Therefore, it is crucial to remove rust from the surface of alloy steel pipes for new energy vehicles before welding.

[0004] Chinese Patent Authorization Publication No. CN110802241A, an efficient high-pressure alloy steel pipe welding groove processing equipment, includes a lathe body and a steel pipe. A lead screw mechanism is horizontally arranged at the center of the lathe body, linear guide mechanisms are arranged on both sides of the lead screw mechanism, and a steel pipe tensioning mechanism is arranged at the right end of the lathe body. The beneficial effects of the present invention are as follows: The main shaft clamping adopts hydraulic expansion and end face positioning to ensure the dimensional consistency of the workpiece when turning the groove. For the processing of grooves for pipes of indefinite length, quickly clamping the workpiece improves the efficiency. The high positioning accuracy of the headstock ensures the coaxiality of the inner and outer circles. A positioning structure is added at the pipe orifice to avoid repeated tool setting and ensure the consistency of the groove length; Adding a linear guide pair to fix the tailstock ensures the stability and repeated positioning accuracy of the tailstock. A torque limiter is added to the reducer to control the driving force of the lead screw and ensure the tightening force of the tailstock.

[0005] However, in actual use of the above structure, when welding alloy steel pipes, there is a lack of effective grinding treatment for the rust on the surface of the alloy steel pipes. This results in the occurrence of welding defects such as pores and slag inclusions in the subsequent welding process of the alloy steel pipes, seriously affecting the quality and performance of the welded joint. Summary of the Invention

[0006] In view of the above problems, a welding processing equipment for alloy steel pipes is provided, which solves the problem that the welding effect of alloy steel pipes is poor due to external rust during welding through a pretreatment mechanism.

[0007] To solve the problems of the existing technology, the present invention provides a welding processing device for alloy steel pipes, which includes a base and a casing slidably arranged on the top of the base. The welding processing device for alloy steel pipes further includes a pretreatment mechanism, a stable conveying and rotating mechanism, and a welding mechanism; the pretreatment mechanism is arranged on the top of the base, and the pretreatment mechanism includes a mounting seat, a first rotating gear disc, a first rotating block, a first sliding seat, and a grinding roller; there are a pair of mounting seats which are respectively arranged on the top of the base, and a circular opening for the alloy steel pipe to pass through is formed beside the mounting seat; the first rotating gear disc is rotatably arranged on the top of the mounting seat and above the base; the first rotating block is arranged beside the first rotating gear disc; the first sliding seat is slidably arranged on the top of the first rotating block; the grinding roller is slidably arranged at the bottom of the first sliding seat and above the alloy steel pipe to be derusted; the stable conveying and rotating mechanism is arranged on the top of the base and beside the mounting seat; the welding mechanism is arranged on the top of the casing and above the stable conveying and rotating mechanism.

[0008] Preferably, the pretreatment mechanism further includes a first rotating driver, a first gear, and a second rotating driver; the first rotating driver is arranged on the top of the mounting seat and beside the first rotating gear disc; the first gear is arranged at the output end of the first rotating driver, and the first gear meshes with the first rotating gear disc; the second rotating driver is arranged on one side of the first sliding seat, and the output end of the second rotating driver is connected to the grinding roller.

[0009] Preferably, the pretreatment mechanism further includes a first telescopic cylinder; the first telescopic cylinder is arranged on the top of the first rotating block, and the output end of the first telescopic cylinder is connected to the grinding roller. When the first telescopic cylinder is started, it can drive the first sliding seat to move along the first rotating block.

[0010] Preferably, the pretreatment mechanism further includes a second gear, a second rotating gear disc, a second connecting block, a second sliding seat, and a polishing roller; the second gear is rotatably arranged on one side of the mounting seat and meshes with the first rotating gear disc; the second rotating gear disc is rotatably arranged on the top of the mounting seat and on the right side of the first rotating gear disc; the second connecting block is arranged on the right side of the second rotating gear disc; the second sliding seat is slidably arranged on the top of the second connecting block; the polishing roller is rotatably arranged beside the second sliding seat and above the alloy steel pipe to be polished.

[0011] Preferably, the pretreatment mechanism further includes a second telescopic cylinder and a third rotating driver; the second telescopic cylinder is arranged on the top of the second connecting block, and the output end of the second telescopic cylinder is connected to the second sliding seat; the third rotating driver is arranged on one side of the second sliding seat, and the output end of the third rotating driver is connected to the polishing roller. When the second telescopic cylinder is started, it can drive the second sliding seat to move along the second connecting block.

[0012] Preferably, the stable conveying and rotating mechanism includes a chassis, a sliding frame, and a first hydraulic cylinder; the chassis has a pair and is respectively arranged on the top of the base, and both pairs of chassis are located beside the mounting frame; the sliding frame has a pair and is respectively slidably arranged on the top of the base, and circular openings for the alloy steel pipes to be welded to pass through are provided in the middle of both pairs of sliding frames; the first hydraulic cylinder has a pair and is respectively arranged on the top of the sliding frame, and the output end of the first hydraulic cylinder is connected to the sliding frame, and when the first hydraulic cylinder is started, it can drive the sliding frame to be in a moving state.

[0013] Preferably, the stable conveying and rotating mechanism further includes a second hydraulic cylinder, a moving frame, conveying rollers, a fourth rotating driver, and a fifth rotating driver; the second hydraulic cylinder is arranged beside the sliding frame and has a pair; the moving frame has a pair and is respectively arranged at the output ends of the second hydraulic cylinders; the conveying rollers have a pair and are respectively rotatably arranged on the top of the moving frame; the fourth rotating driver is arranged beside the moving frame, and the output end of the fourth rotating driver is connected to the conveying roller; the fifth rotating driver has multiple and is respectively arranged on the top of the sliding frame, and the output ends of the fifth rotating driver are connected to the second hydraulic cylinders.

[0014] Preferably, the stable conveying and rotating mechanism further includes a first moving seat, a second moving seat, a first hydraulic oil cylinder, a supporting table, and displacement blocks; the first moving seat is slidably arranged on the top of the base and is located at the bottom of the casing; the second moving seat is slidably arranged on the top of the base and is located beside the first moving seat; the first hydraulic oil cylinder has multiple and is respectively arranged on the top of the second moving seat; the supporting table is slidably arranged at the output end of the first hydraulic oil cylinder and is located above the second moving seat; the displacement blocks have multiple and are respectively slidably arranged on the tops of the first moving seat and the supporting table.

[0015] Preferably, the stable conveying and rotating mechanism further includes a bidirectional screw rod and rotating rollers; channels are provided on the tops of both the first moving seat and the supporting table; the bidirectional screw rod has a pair and is respectively rotatably arranged on the tops of the first moving seat and the supporting table; the rotating rollers have multiple and are respectively slidably arranged outside the pair of bidirectional screw rods, and when the bidirectional screw rod rotates, it can drive the multiple rotating rollers to be in a relatively approaching moving state.

[0016] Preferably, the welding mechanism includes a sliding table, a first linear driver, a rotating rod, and a laser welding machine; the sliding table is slidably arranged on the top of the casing and is located on the top of the first moving seat; the first linear driver is arranged on the top of the first sliding seat, and the output end of the first linear driver is connected to the sliding table; the rotating rod is rotatably arranged at the bottom of the sliding table; the laser welding machine is rotatably arranged outside the rotating rod and is located above the first moving seat.

[0017] The beneficial effects of the present invention compared with the prior art are: 1. The present invention realizes the automatic adjustment of the distance between the grinding roller and the alloy steel pipe to be welded according to the different diameters of the alloy steel pipes by setting a pretreatment mechanism, where the first telescopic cylinder drives the first sliding seat to descend along the direction of the first rotating block. At this time, the relative position between the grinding roller and the second rotating driver can be further adjusted, ensuring an effective grinding effect. When the first rotating gear disc rotates, it can drive the grinding roller to rotate, achieving the rust removal and polishing treatment of the alloy steel pipe to be welded. It ensures that the rust on the outside of the alloy steel pipe to be welded can be effectively removed and the polishing operation can be completed in the early stage of welding, providing a high-quality surface preparation for the subsequent welding process.

[0018] 2. The present invention realizes the stable clamping of the alloy steel pipe to be welded during rotation by setting a stable conveying and rotating mechanism. When the fifth rotating driver starts and drives the second hydraulic cylinder, the moving frame and the conveying roller to rotate synchronously. When the conveying roller rotates to the 90-degree position, the fourth rotating driver starts again and drives the conveying roller to continue rotating. Since the conveying roller is made of polyurethane material and has good deformation ability and clamping force, it can ensure the stable clamping of the alloy steel pipe to be welded during rotation. In this state, the alloy steel pipe to be welded rotates under the action of the conveying roller, facilitating the subsequent grinding, polishing and welding operations. On the one hand, it realizes the stable conveying of the alloy steel pipe to be welded. On the other hand, by rotating the conveying roller, the alloy steel pipe to be welded is in a rotating state, facilitating the subsequent welding operation and enabling the stable conveying of alloy steel pipes to be welded with different diameters.

[0019] 3. The present invention realizes the precise adjustment of the welding angle by setting a welding mechanism. To adapt to the welding of alloy steel pipes to be welded with different diameters, the first linear driver starts and drives the sliding table to descend until the sliding sleeve drives the laser welding machine to move to the butt welding position between the two alloy steel pipes to be welded. Subsequently, the seventh rotating driver starts and drives the rotating rod and the laser welding machine to rotate, achieving the precise adjustment of the welding angle, thereby ensuring the effective welding of the butt joint between the two alloy steel pipes with different diameters. During the welding process, the conveying roller rotated by 90 degrees also rotates simultaneously, enabling the two alloy steel pipes to be welded to rotate relative to each other, realizing rotary welding. It can not only complete the welding work of alloy steel pipes to be welded with the same diameter, but also adapt to the welding requirements of alloy steel pipes to be welded with different diameters by adjusting the positions of the supporting table and the sliding frame, further improving the flexibility and adaptability of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structure diagram of a kind of alloy steel pipe welding and processing equipment of the present invention from the first perspective.

[0021] Figure 2 is a side view structure diagram of a kind of alloy steel pipe welding and processing equipment of the present invention.

[0022] Figure 3It is the left view structure diagram of a welding processing device for alloy steel pipes of the present invention.

[0023] Figure 4 It is the three-dimensional structure diagram of the pretreatment mechanism of a welding processing device for alloy steel pipes of the present invention from the first perspective.

[0024] Figure 5 It is the three-dimensional structure diagram of the pretreatment mechanism of a welding processing device for alloy steel pipes of the present invention from the second perspective.

[0025] Figure 6 It is Figure 4 The enlarged structure diagram at position A in

[0026] Figure 7 It is Figure 4 The enlarged structure diagram at position B in

[0027] Figure 8 It is Figure 5 The enlarged structure diagram at position C in

[0028] Figure 9 It is the three-dimensional structure diagram of the stable conveying and rotating mechanism of a welding processing device for alloy steel pipes of the present invention.

[0029] Figure 10 It is Figure 3 The enlarged structure diagram at position D in

[0030] Figure 11 It is the three-dimensional structure diagram of the partial section of a welding processing device for alloy steel pipes of the present invention.

[0031] Figure 12 It is the three-dimensional structure diagram of the welding mechanism of a welding processing device for alloy steel pipes of the present invention.

[0032] The reference numerals in the figure are: 1, base; 2, casing; 3, pretreatment mechanism; 31, mounting base; 32, first rotating gear disc; 33, first rotating block; 34, first sliding base; 35, grinding roller; 36, first rotary drive; 37, first gear; 38, second rotary drive; 39, first telescopic cylinder; 391, second gear; 392, second rotating gear disc; 393, second connecting block; 394, second sliding base; 395, polishing roller; 396, second telescopic cylinder; 397, third rotary drive; 4, stable conveying and rotating mechanism; 41, chassis; 42, sliding frame; 43, first hydraulic cylinder; 44, second hydraulic cylinder; 45, moving frame; 46, conveying roller; 47, fourth rotary drive; 48, fifth rotary drive; 49, first moving base; 491, second moving base; 492, first hydraulic oil cylinder; 493, supporting platform; 494, displacement block; 495, bidirectional screw; 496, rotating roller; 5, welding mechanism; 51, sliding table; 52, first linear drive; 53, rotating rod; 54, laser welding machine. Detailed implementation manners

[0033] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation manners.

[0034] Refer to Figures 1-4 As shown, an alloy steel pipe welding and processing device includes a base 1 and a casing 2 slidably disposed on the top of the base 1. The alloy steel pipe welding and processing device further includes a pretreatment mechanism 3, a stable conveying and rotating mechanism 4 and a welding mechanism 5; the pretreatment mechanism 3 is disposed on the top of the base 1, and the pretreatment mechanism 3 includes a mounting base 31, a first rotating gear disc 32, a first rotating block 33, a first sliding base 34 and a grinding roller 35; there are a pair of mounting bases 31 which are respectively disposed on the top of the base 1, and a circular opening for the alloy steel pipe to pass through is formed beside the mounting base 31; the first rotating gear disc 32 is rotatably disposed on the top of the mounting base 31 and above the base 1; the first rotating block 33 is disposed beside the first rotating gear disc 32; the first sliding base 34 is slidably disposed on the top of the first rotating block 33; the grinding roller 35 is slidably disposed at the bottom of the first sliding base 34 and above the alloy steel pipe to be derusted; the stable conveying and rotating mechanism 4 is disposed on the top of the base 1 and beside the mounting base 31; the welding mechanism 5 is disposed on the top of the casing 2 and above the stable conveying and rotating mechanism 4.

[0035] When rust removal work needs to be carried out on the outside of the alloy steel pipe to be welded. First, place the alloy steel pipe to be welded at the circular opening of the mounting seat 31 through a lifting tool or a robotic arm, preferably a robotic arm. Then, the first rotating gear disc 32 rotates and drives the first rotating block 33, the first sliding seat 34, and the grinding roller 35 to rotate synchronously. During the rotation of the grinding roller 35, it can come into full contact with the rust on the outside of the alloy steel pipe to be welded for efficient grinding treatment. Ensure that there is no rust residue on the outside of the alloy steel pipe to be welded in the early stage of welding, thus effectively guaranteeing the welding quality of the alloy steel pipe in the later stage.

[0036] See Figures 4-8 As shown, the pretreatment mechanism 3 further includes a first rotation driver 36, a first gear 37, and a second rotation driver 38; the first rotation driver 36 is arranged on the top of the mounting seat 31 and beside the first rotating gear disc 32; the first gear 37 is arranged at the output end of the first rotation driver 36, and the first gear 37 meshes with the first rotating gear disc 32; the second rotation driver 38 is arranged on one side of the first sliding seat 34, and the output end of the second rotation driver 38 is connected to the grinding roller 35.

[0037] When the alloy steel pipe to be welded is located at the circular opening position of the mounting seat 31, first, the first rotation driver 36 is started and drives the first gear 37 to rotate. When the first gear 37 rotates, it can make the engaged first rotating gear disc 32 rotate. When the first rotating gear disc 32 rotates, it can drive the grinding roller 35 to rotate. Then, the second rotation driver 38 is started and drives the grinding roller 35 to rotate, driving the grinding roller 35 to effectively grind the outside of the alloy steel pipe to be welded.

[0038] See Figures 5-8 As shown, the pretreatment mechanism 3 further includes a first telescopic cylinder 39; the first telescopic cylinder 39 is arranged on the top of the first rotating block 33, and the output end of the first telescopic cylinder 39 is connected to the grinding roller 35. When the first telescopic cylinder 39 is started, it can drive the first sliding seat 34 to move along the first rotating block 33.

[0039] When the position of the first sliding seat 34 needs to be adjusted for alloy steel pipes of different diameters. First, start the first telescopic cylinder 39, and the first telescopic cylinder 39 drives the first sliding seat 34 to descend along the direction of the first rotating block 33. At this time, the relative position of the grinding roller 35 and the second rotation driver 38 can be further adjusted. It realizes automatically adjusting the distance between the grinding roller 35 and the alloy steel pipe to be welded according to the different diameters of the alloy steel pipes, thus ensuring an effective grinding effect.

[0040] See Figures 6-8As shown, the pretreatment mechanism 3 further includes a second gear 391, a second rotating gear disc 392, a second connecting block 393, a second sliding seat 394, and a polishing roller 395. The second gear 391 is rotatably arranged on one side of the mounting seat 31 and meshes with the first rotating gear disc 32. The second rotating gear disc 392 is rotatably arranged on the top of the mounting seat 31 and is located on the right side of the first rotating gear disc 32. The second connecting block 393 is arranged on the right side of the second rotating gear disc 392. The second sliding seat 394 is slidably arranged on the top of the second connecting block 393. The polishing roller 395 is rotatably arranged beside the second sliding seat 394 and is located above the alloy steel pipe to be polished.

[0041] The polished alloy steel pipe continues to be conveyed to the lower part of the second rotating gear disc 392. When the first rotating gear disc 32 rotates, it can drive the meshing second gear 391 to rotate. When the second gear 391 rotates, it can drive the second rotating gear disc 392 to rotate. When the second rotating gear disc 392 rotates, it can drive the second sliding seat 394 and the polishing roller 395 to rotate synchronously.

[0042] See Figure 7 and Figure 8 As shown, the pretreatment mechanism 3 further includes a second telescopic cylinder 396 and a third rotary driver 397. The second telescopic cylinder 396 is arranged on the top of the second connecting block 393, and the output end of the second telescopic cylinder 396 is connected to the second sliding seat 394. The third rotary driver 397 is arranged on one side of the second sliding seat 394, and the output end of the third rotary driver 397 is connected to the polishing roller 395. When the second telescopic cylinder 396 is started, it can drive the second sliding seat 394 to move along the second connecting block 393.

[0043] First, when the second sliding seat 394 and the polishing roller 395 are in a rotating state, start the second telescopic cylinder 396. The second telescopic cylinder 396 drives the second sliding seat 394 to move downward until the polishing roller 395 contacts the surface of the alloy steel pipe. After contact, the third rotary driver 397 is immediately started and drives the polishing roller 395 to enter a rotating state. The rust removal and polishing treatment of the alloy steel pipe to be welded are realized. It ensures that the rust on the outside of the alloy steel pipe to be welded can be effectively removed in the early stage of welding, and the polishing operation is completed, providing high-quality surface preparation for the subsequent welding process.

[0044] See Figure 9 and Figure 10As shown, the stable conveying and rotating mechanism 4 includes a chassis 41, a sliding frame 42 and a first hydraulic cylinder 43; the chassis 41 has a pair and is respectively arranged on the top of the base 1, and the pair of chassis 41 are both located beside the mounting frame; the sliding frame 42 has a pair and is respectively slidably arranged on the top of the base 1, and circular openings for the alloy steel pipes to be welded to pass through are formed in the middle of the pair of sliding frames 42; the first hydraulic cylinder 43 has a pair and is respectively arranged on the top of the sliding frame 42, and the output end of the first hydraulic cylinder 43 is connected to the sliding frame 42. When the first hydraulic cylinder 43 is started, it can drive the sliding frame 42 to be in a moving state.

[0045] When it is necessary to rust-remove and polish the alloy steel pipes to be welded. First, use a lifting tool or a robotic arm to place the alloy steel pipes to be welded at the circular openings of the sliding frame 42. In order to ensure stable contact between the alloy steel pipes to be welded and the grinding rollers 35 and polishing rollers 395 and perform stable conveying work. First, the first hydraulic cylinder 43 drives the sliding frame 42 to adjust its position up or down along the chassis 41 until the circular opening formed in the sliding frame 42 corresponds to the circular opening formed in the mounting seat 31.

[0046] See Figures 3-10 As shown, the stable conveying and rotating mechanism 4 further includes a second hydraulic cylinder 44, a moving frame 45, conveying rollers 46, a fourth rotating driver 47 and a fifth rotating driver 48; the second hydraulic cylinder 44 is arranged beside the sliding frame 42 and has a pair; the moving frame 45 has a pair and is respectively arranged at the output ends of the second hydraulic cylinders 44; the conveying rollers 46 have a pair and are respectively rotatably arranged on the top of the moving frame 45; the fourth rotating driver 47 is arranged beside the moving frame 45, and the output end of the fourth rotating driver 47 is connected to the conveying roller 46; the fifth rotating driver 48 has a plurality and is respectively arranged on the top of the sliding frame 42, and the output ends of the fifth rotating drivers 48 are connected to the second hydraulic cylinder 44.

[0047] The conveying roller 46 is preferably made of a flexible material, which can reduce the contact friction with the alloy steel pipe to be welded. After the sliding frame 42 moves into place, the second hydraulic cylinder 44 is activated and drives the moving frame 45 and the conveying roller 46 to move together until the conveying roller 46 is in close contact with the outside of the alloy steel pipe to be welded. Subsequently, the fourth rotary driver 47 is activated and drives the conveying roller 46 to rotate. At this time, the alloy steel pipe to be welded is stably conveyed under the rotation of the conveying roller 46. When the alloy steel pipe to be welded needs to be rust-removed and polished. The fifth rotary driver 48 is activated and drives the second hydraulic cylinder 44, the moving frame 45 and the conveying roller 46 to rotate synchronously. When the conveying roller 46 rotates to the 90-degree position, the fourth rotary driver 47 is activated again and drives the conveying roller 46 to continue rotating. Since the conveying roller 46 is made of polyurethane material and has good deformation ability and clamping force, it can ensure the stable clamping of the alloy steel pipe to be welded during the rotation process. In this state, the alloy steel pipe to be welded rotates under the action of the conveying roller 46, which is convenient for subsequent grinding, polishing and welding work. On the one hand, the stable conveying of the alloy steel pipe to be welded is realized. On the other hand, by rotating the conveying roller 46, the alloy steel pipe to be welded is in a rotating state, which is convenient for subsequent welding work and can stably convey alloy steel pipes to be welded with different diameters.

[0048] See Figures 3-10 As shown, the stable conveying and rotating mechanism 4 further includes a first moving seat 49, a second moving seat 491, a first hydraulic cylinder 492, a supporting table 493 and a displacement block 494; the first moving seat 49 is slidably arranged on the top of the base 1 and is located at the bottom of the machine shell 2; the second moving seat 491 is slidably arranged on the top of the base 1 and is located beside the first moving seat 49; a plurality of first hydraulic cylinders 492 are respectively arranged on the top of the second moving seat 491; the supporting table 493 is slidably arranged at the output end of the first hydraulic cylinder 492 and is located above the second moving seat 491; a plurality of displacement blocks 494 are respectively slidably arranged on the tops of the first moving seat 49 and the supporting table 493.

[0049] The alloy steel pipe to be welded after grinding and polishing is stably conveyed under the action of the conveying roller 46. In this state, the conveying roller 46 is in the conveying state rather than the state of rotating 90 degrees. When welding alloy steel pipes with different diameters, first, the first hydraulic cylinder 492 is activated and drives the supporting table 493 to rise. Then the alloy steel pipe to be welded can be located above a plurality of displacement blocks 494 under the conveying of the conveying roller 46. By adjusting the height of the supporting table 493, the welding requirements of alloy steel pipes to be welded with different diameters can be met. According to the diameter of the alloy steel pipe to be welded, the height of the supporting table 493 is adjusted to ensure that the alloy steel pipe to be welded can maintain a proper welding position with the first moving seat 49, thereby improving the welding accuracy and quality.

[0050] SeeFigures 9-11 As shown, the stable conveying and rotating mechanism 4 further includes a bidirectional screw 495 and a rotating roller 496; channels are provided at the tops of the first moving seat 49 and the supporting table 493; there are a pair of bidirectional screws 495 which are respectively rotatably arranged at the tops of the first moving seat 49 and the supporting table 493; there are multiple rotating rollers 496 which are respectively slidably arranged outside the pair of bidirectional screws 495, and when the bidirectional screw 495 rotates, it can drive the multiple rotating rollers 496 to move relatively closer.

[0051] Sixth rotating drivers for driving the bidirectional screw 495 to rotate are provided at the tops of the first moving seat 49 and the supporting table 493. When it is necessary to drive the displacement block 494 and the rotating roller 496 to abut against the alloy steel pipe to be welded. The bidirectional screw 495 rotates and drives the displacement block 494 and the rotating roller 496 to move relatively closer. In this state, the alloy steel pipe to be welded can contact the rotating roller 496. At this time, the alloy steel pipe to be welded can perform a rotating action under the rotating force of the conveying roller 46 after rotating 90 degrees.

[0052] See Figure 12 As shown, the welding mechanism 5 includes a sliding table 51, a first linear driver 52, a rotating rod 53 and a laser welding machine 54; the sliding table 51 is slidably arranged on the top of the machine shell 2 and is located on the top of the first moving seat 49; the first linear driver 52 is arranged on the top of the first sliding seat 34, and the output end of the first linear driver 52 is connected to the sliding table 51; the rotating rod 53 is rotatably arranged at the bottom of the sliding table 51; the laser welding machine 54 is rotatably arranged outside the rotating rod 53 and is located above the first moving seat 49.

[0053] A limiting frame for the sliding of the machine housing 2 is provided at the tops of the first moving seat 49 and the second moving seat 491. An electric roller is provided at the bottom of the machine housing 2. The electric roller is controlled by a servo motor. When the servo motor is started, it can drive the electric roller to rotate, and the electric roller can slide on the top of the limiting frame, realizing the adjustment of the positions of the first moving seat 49, the second moving seat 491 and the welding mechanism 5, and can be adjusted according to the welding positions of the steel pipes to be welded with different lengths or different diameters, improving the adaptability. A screw rod can be provided at the output end of the first linear driver 52. The screw rod is in threaded cooperation with the sliding table 51. When the screw rod rotates, it can drive the sliding table 51 to move up or down. A seventh rotating driver can be provided at the input end of the rotating rod 53. The seventh rotating driver can drive the rotating rod 53 to rotate. After the alloy steel pipe to be welded is stably placed on the tops of the first moving seat 49 and the supporting table 493. In order to adapt to the welding of alloy steel pipes to be welded with different diameters, the first linear driver 52 is started and drives the sliding table 51 to descend until the sliding sleeve drives the laser welding machine 54 to move to the butt welding position between the two alloy steel pipes to be welded. Subsequently, the seventh rotating driver is started, driving the rotating rod 53 and the laser welding machine 54 to rotate, realizing the precise adjustment of the welding angle, so as to ensure that the butt joint between the two alloy steel pipes to be welded with different diameters can be effectively welded. During the welding process, the conveying rollers 46 rotated by ninety degrees rotate simultaneously, enabling the two alloy steel pipes to be welded to rotate relatively, realizing rotary welding. It can not only complete the welding work of alloy steel pipes to be welded with the same diameter, but also adapt to the welding requirements of alloy steel pipes to be welded with different diameters by adjusting the positions of the supporting table 493 and the sliding frame 42, further improving the flexibility and adaptability of welding.

[0054] Working principle: When the alloy steel pipe to be welded is placed at the circular opening position of the mounting seat 31, the system starts to work. First, the first rotary driver 36 is started, driving the first gear 37 to rotate and driving the first rotating tooth disc 32 to rotate. The rotation of the first rotating tooth disc 32 drives the grinding roller 35 to rotate. Subsequently, the second rotary driver 38 is started to further drive the grinding roller 35 to rotate, thereby realizing the grinding of the outside of the alloy steel pipe. For alloy steel pipes with different diameters, the position of the first sliding seat 34 needs to be adjusted. At this time, the first telescopic cylinder 39 is started, driving the first sliding seat 34 to descend along the direction of the first rotating block 33 to adjust the relative position of the grinding roller 35 and the second rotary driver 38. It ensures that the distance between the grinding roller 35 and the alloy steel pipe to be welded is automatically adjusted according to the different diameters of the alloy steel pipe to achieve an effective grinding effect. The ground alloy steel pipe continues to be conveyed under the second rotating tooth disc 392. The rotation of the first rotating tooth disc 32 drives the second rotating tooth disc 392 to rotate through the meshing second gear 391, and then drives the second sliding seat 394 and the polishing roller 395 to rotate synchronously. At this time, the second telescopic cylinder 396 is started, driving the second sliding seat 394 to descend until the polishing roller 395 contacts the surface of the alloy steel pipe. After contact, the third rotary driver 397 is started to drive the polishing roller 395 to rotate, completing the polishing treatment after rust removal. To ensure the stable contact and conveyance of the alloy steel pipe to be welded, first use a sling or robotic arm to place the alloy steel pipe to be welded at the circular opening of the sliding frame 42. Then, the first hydraulic cylinder 43 drives the sliding frame 42 to rise or fall along the chassis 41 until it corresponds to the circular opening position of the mounting seat 31. The conveying roller 46 is made of a flexible material to reduce the contact friction with the alloy steel pipe. After the sliding frame 42 is in place, the second hydraulic cylinder 44 is started, driving the moving frame 45 and the conveying roller 46 to move until they are in close contact with the outside of the alloy steel pipe. Subsequently, the fourth rotary driver 47 is started, driving the conveying roller 46 to rotate, realizing the stable conveyance of the alloy steel pipe. When the alloy steel pipe needs to be rust-removed and polished, the fifth rotary driver 48 is started, driving the second hydraulic cylinder 44, the moving frame 45 and the conveying roller 46 to rotate synchronously. After the conveying roller 46 rotates to the 90-degree position, the fourth rotary driver 47 is started again to continue driving the conveying roller 46 to rotate. The polyurethane material of the conveying roller 46 ensures good deformation ability and clamping force, and can stably clamp the alloy steel pipe during rotation. For the welding requirements of alloy steel pipes with different diameters, first start the first hydraulic cylinder 492 to drive the supporting table 493 to rise. The alloy steel pipe is conveyed by the conveying roller 46 and is located above a plurality of displacement blocks 494. By adjusting the height of the supporting table 493, alloy steel pipes with different diameters can be adapted. At the same time, the tops of the first moving seat 49 and the supporting table 493 are both provided with a sixth rotary driver for driving the bidirectional screw 495 to rotate, thereby driving the displacement blocks 494 and the rotating roller 496 to approach relatively and contact the alloy steel pipe.At this time, the alloy steel pipe rotates under the rotational force of the conveying roller 46 after rotating 90 degrees. In order to adapt to alloy steel pipes of different diameters for welding, the first linear driver 52 is started to drive the sliding table 51 to descend until the laser welding machine 54 moves to the butt welding position between the two alloy steel pipes to be welded. Subsequently, the seventh rotational driver is started to drive the rotating rod 53 and the laser welding machine 54 to rotate, achieving precise adjustment of the welding angle. During the welding process, the conveying roller 46 that has rotated 90 degrees rotates simultaneously, causing the two alloy steel pipes to be welded to rotate relative to each other, achieving rotary welding. This system can not only complete the welding work of alloy steel pipes with the same diameter, but also adapt to the welding requirements of alloy steel pipes with different diameters by adjusting the positions of the supporting table 493 and the sliding frame 42, improving the flexibility and adaptability of welding.

[0055] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An alloy steel pipe welding processing device, comprising a base (1) and a housing (2) slidably arranged on the top of the base (1), characterized in that: The alloy steel pipe welding processing equipment also includes a pretreatment mechanism (3), a stable conveying and rotating mechanism (4) and a welding mechanism (5); The pretreatment mechanism (3) is arranged on the top of the base (1), and comprises a mounting seat (31), a first rotating toothed disc (32), a first rotating block (33), a first sliding seat (34) and a grinding roller (35); The mounting seats (31) have a pair and are respectively arranged on the top of the base (1), and a circular opening for the alloy steel pipe to pass through is provided on the side of the mounting seats (31); The first rotating toothed disc (32) is rotatably disposed on the top of the mounting seat (31) and is located above the base (1); The first rotating block (33) is arranged beside the first rotating toothed disc (32); The first sliding seat (34) is slidably arranged on the top of the first rotating block (33); The grinding roller (35) is slidably arranged at the bottom of the first sliding seat (34) and is located above the alloy steel pipe to be derusted; The stable conveying rotation mechanism (4) is arranged on the top of the base (1) and is located beside the mounting seat (31); The welding mechanism (5) is arranged on the top of the casing (2) and is located above the stable conveying rotating mechanism (4).

2. The alloy steel pipe welding processing equipment according to claim 1 is characterized in that: The pretreatment mechanism (3) further comprises a first rotary driver (36), a first gear (37) and a second rotary driver (38); the first rotary driver (36) is arranged on the top of the mounting seat (31) and is located beside the first rotating toothed disc (32); the first gear (37) is arranged at the output end of the first rotary driver (36), and the first gear (37) is meshed with the first rotating toothed disc (32); the second rotary driver (38) is arranged on one side of the first sliding seat (34), and the output end of the second rotary driver (38) is connected to the grinding roller (35).

3. The alloy steel pipe welding processing equipment according to claim 1 is characterized in that: The pretreatment mechanism (3) further comprises a first telescopic cylinder (39), which is arranged on the top of the first rotating block (33), and the output end of the first telescopic cylinder (39) is connected to the grinding roller (35). When the first telescopic cylinder (39) is started, it can drive the first sliding seat (34) to move along the first rotating block (33).

4. The alloy steel pipe welding processing equipment according to claim 1, characterized in that: The pretreatment mechanism (3) further comprises a second gear (391), a second rotating toothed disc (392), a second connecting block (393), a second sliding seat (394) and a polishing roller (395); the second gear (391) is rotatably arranged on one side of the mounting seat (31) and meshes with the first rotating toothed disc (32); the second rotating toothed disc (392) is rotatably arranged on the top of the mounting seat (31) and is located on the right side of the first rotating toothed disc (32); the second connecting block (393) is arranged on the right side of the second rotating toothed disc (392); the second sliding seat (394) is slidably arranged on the top of the second connecting block (393); and the polishing roller (395) is rotatably arranged beside the second sliding seat (394) and is located above the alloy steel pipe to be polished.

5. The alloy steel pipe welding processing equipment according to claim 4, characterized in that: The pretreatment mechanism (3) further comprises a second telescopic cylinder (396) and a third rotary driver (397); the second telescopic cylinder (396) is arranged on the top of the second connecting block (393), and the output end of the second telescopic cylinder (396) is connected to the second sliding seat (394); the third rotary driver (397) is arranged on one side of the second sliding seat (394), and the output end of the third rotary driver (397) is connected to the polishing roller (395); when the second telescopic cylinder (396) is started, the second sliding seat (394) can be driven to move along the second connecting block (393).

6. The alloy steel pipe welding processing equipment according to claim 1, characterized in that: The stable conveying rotation mechanism (4) comprises a base frame (41), a sliding frame (42) and a first hydraulic cylinder (43); the base frame (41) has a pair of base frames (41) respectively arranged on the top of the base (1), and the pair of base frames (41) are both located beside the mounting frame; the sliding frame (42) has a pair of base frames (42) respectively arranged on the top of the base (1), and the middle of the pair of sliding frames (42) is provided with a circular opening for the alloy steel pipe to be welded to pass through; the first hydraulic cylinder (43) has a pair of base frames (41) respectively arranged on the top of the sliding frames (42), and the output end of the first hydraulic cylinder (43) is connected to the sliding frame (42), and when the first hydraulic cylinder (43) is started, the sliding frame (42) can be driven to move.

7. The alloy steel pipe welding processing equipment according to claim 6, characterized in that: The stable conveying rotation mechanism (4) further comprises a second hydraulic cylinder (44), a moving frame (45), a conveying roller (46), a fourth rotation driver (47) and a fifth rotation driver (48). The second hydraulic cylinder (44) is arranged beside the sliding frame (42) and has a pair of them. The moving frame (45) has a pair of them and they are respectively arranged at the output end of the second hydraulic cylinder (44). The conveying roller (46) has a pair of them and they are respectively rotatably arranged at the top of the moving frame (45). The fourth rotation driver (47) is arranged beside the moving frame (45), and the output end of the fourth rotation driver (47) is connected to the conveying roller (46). The fifth rotation driver (48) has a plurality of them and they are respectively arranged at the top of the sliding frame (42), and the output end of the fifth rotation driver (48) is connected to the second hydraulic cylinder (44).

8. The alloy steel pipe welding processing equipment according to claim 6, characterized in that: The stable conveying rotation mechanism (4) further comprises a first movable seat (49), a second movable seat (491), a first hydraulic oil cylinder (492), a supporting platform (493) and a displacement block (494); the first movable seat (49) is slidably arranged on the top of the base (1) and located at the bottom of the housing (2); the second movable seat (491) is slidably arranged on the top of the base (1) and located beside the first movable seat (49); the first hydraulic oil cylinder (492) has a plurality of and are respectively arranged on the top of the second movable seat (491); the supporting platform (493) is slidably arranged at the output end of the first hydraulic oil cylinder (492) and is located above the second movable seat (491); and the displacement block (494) has a plurality of and are respectively slidably arranged on the top of the first movable seat (49) and the supporting platform (493).

9. The alloy steel pipe welding processing equipment according to any one of claims 6 to 8, characterized in that: The stable conveying rotation mechanism (4) further comprises a bidirectional screw (495) and a rotating roller (496); the tops of the first movable seat (49) and the supporting platform (493) are both provided with channels; the bidirectional screw (495) comprises a pair of bidirectional screws which are rotatably arranged on the tops of the first movable seat (49) and the supporting platform (493), respectively; the rotating roller (496) comprises a plurality of bidirectional screws which are slidably arranged on the outside of the pair of bidirectional screws (495), and when the bidirectional screw (495) rotates, the plurality of rotating rollers (496) can be driven to move in a relatively close state.

10. The alloy steel pipe welding processing equipment according to claim 1, characterized in that: The welding mechanism (5) comprises a sliding table (51), a first linear drive (52), a rotating rod (53) and a laser welding machine (54); the sliding table (51) is slidably arranged on the top of the housing (2) and is located on the top of the first movable seat (49); the first linear drive (52) is arranged on the top of the first sliding seat (34), and the output end of the first linear drive (52) is connected to the sliding table (51); the rotating rod (53) is rotatably arranged at the bottom of the sliding table (51); and the laser welding machine (54) is rotatably arranged outside the rotating rod (53) and is located above the first movable seat (49).

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