Welding alignment device for cast steel parts

Abstract

The application discloses a cast steel welding alignment device and belongs to the technical field of welding assistance. The cast steel welding alignment device comprises a supporting leg, the top of the supporting leg is fixedly connected with a machining table, the inside of the machining table is movably connected with a clamping moving device, the outside of the clamping moving device is movably connected with a moving clamping block, and the inside of the moving clamping block is movably connected with a fixing centering device. When the equipment is used for welding long cast steel pipe fittings, the cast steel pipe fittings on both sides are prone to deformation under the influence of gravity and temperature factors. At this time, the clamping moving device is started, and the friction rod, the friction wheel, the belt pulley one, the belt, the belt pulley two are cooperated to enable the anti-deformation supporting plates on both sides to move inward, so that the rear end outside of the cast steel pipe fittings is wrapped by the anti-deformation supporting plates, the influence of the temperature difference generated during welding on the cast steel pipe fittings is reduced, the deformation and bending of the cast steel pipe fittings caused by gravity are avoided, and the welding process of the equipment is more smooth.

Description

Technical Field

[0001] This invention belongs to the field of welding auxiliary technology, specifically relating to a welding alignment device for cast steel parts. Background Technology

[0002] Cast steel pipe fitting welding equipment plays a crucial role in pipeline engineering. With its advantages such as high efficiency and stability, high precision, labor saving, strong adaptability, safety and reliability, simple operation, high welding quality, and material saving, it has been widely used and recognized in modern industry. Before welding cast steel pipe fittings, it is necessary to limit and position the casting steel pipe fittings in advance to improve the efficiency of subsequent welding.

[0003] Chinese patent CN119858000A discloses a small-diameter pipe welding alignment and adjustment device, including a fixed base for support, a reduction motor located at the center of the rear end face of the fixed base, a bidirectional lead screw located at the output end of the reduction motor, and a clamping device, of which two sets are provided. In the aforementioned application, when the clamping device aligns and welds the cast steel pipe fittings at both ends, if the cast steel pipe fittings are long, because the device relies solely on the fixed alignment device to fix the cast steel pipe fittings, the outer cast steel pipe fittings are prone to deformation and bending due to temperature and their own weight, thus making welding difficult. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a welding alignment device for cast steel parts, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides a welding alignment device for cast steel parts, including a support foot, a processing table fixedly connected to the top of the support foot, a clamping and moving device movably connected inside the processing table, two movable clamping blocks movably connected to the outside of the clamping and moving moving device, a fixed centering device movably connected inside the movable clamping blocks, a rotating device movably connected inside the fixed centering device, and a welding chamber fixedly connected to the top center of the processing table, and a welding adjustment device movably connected inside the welding chamber. A friction rod is fixedly connected to the inner side of the processing table. A rotating shaft is movably connected to the inside of the movable clamping block. A friction wheel is fixedly connected to the outer side of the rotating shaft. The friction wheel contacts the friction rod. A pulley is fixedly connected to the end of the rotating shaft near the center of the movable clamping block. A limiting frame is fixedly connected to the side of the movable clamping block away from the center of the processing table. A double-acting screw is movably connected to the inside of the limiting frame. A pulley is fixedly connected to the outer side of the double-acting screw. A belt is movably connected to the outer sides of the pulley and the pulley. A slide rail is fixedly connected to the inside of the limiting frame. Two movable blocks are movably connected to the left and right sides of the double-acting screw. Each movable block has a sliding groove. The outer side of the slide rail is movably connected to the sliding groove. An anti-deformation support plate is fixedly connected to the top of the movable block. Anti-deformation support plates are installed. When welding long cast steel pipes, the pipes on both sides are prone to deformation due to their own weight and temperature. At this time, the clamping and moving equipment is activated, and in conjunction with the friction rod, friction wheel, pulley one, belt, pulley two, double-acting screw, and movable block, the anti-deformation support plates on both sides move inward. This wraps the outer rear end of the cast steel pipe with the anti-deformation support plates, thus supporting the outer rear end of the cast steel pipe. This reduces the impact of temperature difference generated during welding on the cast steel pipe and supports it, preventing deformation and bending due to its own weight, making the welding process smoother.

[0006] Furthermore, the height of the movable block is consistent with the inner height of the limiting frame, and the inner surface of the anti-deformation support plate is an arc surface.

[0007] Furthermore, each of the movable clamping blocks has a placement hole inside, and a cast steel pipe fitting is placed inside the placement hole.

[0008] Furthermore, reinforcing ribs are fixedly connected between the supporting legs, and an auxiliary smoke exhaust assembly is movably connected to the rear side of the welding chamber.

[0009] Furthermore, the auxiliary smoke exhaust assembly includes a push rod, a triangular inclined block, a first fixed plate, a first spring, a second sliding groove, a fixed slider, a fixed rod, a rack, a gear, a second rotating shaft, a sealing plate, and a smoke exhaust duct. A push rod is fixedly connected to the side of the movable clamping block on the left side near the center of the processing table. A fixed slider is fixedly connected to the top of the processing table. A triangular inclined block is movably connected to the top of the processing table. A second sliding groove is formed on the top surface of the triangular inclined block. The outer side of the fixed slider is movably connected to the second sliding groove. A first fixed plate is fixedly connected to the top of the processing table. A first spring is fixedly connected between the first fixed plate and the triangular inclined block. A fixed rod is fixedly connected to the top of the triangular inclined block. A rack is fixedly connected to the top of the fixed rod. A second rotating shaft is movably connected inside the welding chamber. A gear is fixedly connected to one right end of the second rotating shaft, and the gear meshes with the rack. A sealing plate is movably connected to the outer side of the second rotating shaft. A smoke exhaust duct is fixedly connected to the rear side of the welding chamber. An auxiliary smoke exhaust assembly is installed. When the moving clamps on both sides move inward, they work in conjunction with the push rod, triangular inclined block, slide groove two, fixed slider, rack, gear, and rotating shaft two to rotate and open the sealing plate, making the interior of the smoke exhaust duct connected to the interior of the welding chamber. At this time, the smoke exhaust fan is started to allow the toxic fumes generated during the welding process to be discharged from the equipment through the smoke exhaust duct.

[0010] Furthermore, an exhaust fan is fixedly connected inside the exhaust duct, and an exhaust groove is provided on the rear surface of the welding chamber. The size of the sealing plate is the same as that of the exhaust groove.

[0011] Furthermore, the interior of the exhaust duct is connected to the interior of the welding chamber, and the interior of the anti-deformation support plate is movably connected to an auxiliary support component.

[0012] Furthermore, the auxiliary support assembly includes a movable groove, a second fixed plate, a third fixed plate, a third sliding groove, a slider, a second spring, a third rotating shaft, and a positioning support roller. Each of the anti-deformation support plates has a movable groove on its upper and lower sides. The second fixed plate is fixedly connected to both sides of the movable groove. The third fixed plate is fixedly connected to the side of each second fixed plate near the center of the anti-deformation support plate. The third fixed plate has a sliding groove inside. The slider is movably connected inside the sliding groove. The second spring is fixedly connected between the slider and the rear side of the sliding groove. The third rotating shaft is movably connected inside the slider. The positioning support roller is fixedly connected to the outer side of the third rotating shaft. An auxiliary support assembly is installed. When the anti-deformation support plate moves inward, the equipment supports cast steel pipes of different diameters, but the inner surface curvature of the anti-deformation support plate is fixed, making it impossible for the anti-deformation support plate to adapt to cast steel pipes of different diameters. The positioning support roller first contacts the outer side of the cast steel pipe, and works with the rotating shaft three, slider, fixing plate three, and spring two to ensure that the positioning support roller always moves to the appropriate position. At the same time, the spring is always compressed at the same maximum pressure position, thus improving the applicability of the equipment.

[0013] Furthermore, the length of the positioning support roller is less than the spacing between each of the three fixed plates, and the spacing between each of the three fixed plates is consistent with the length of the movable groove.

[0014] Furthermore, the length of the second spring is less than the length of the third groove.

[0015] The advantages of this application are: (1) When the equipment is welding long cast steel pipes, the cast steel pipes on both sides are prone to deformation under the influence of their own weight and temperature. At this time, the clamping and moving equipment is started, and the friction rod, friction wheel, pulley one, belt, pulley two, double screw, and movable block are used to move the anti-deformation support plates on both sides inward, so that the outer rear end of the cast steel pipe is wrapped by the anti-deformation support plate, thereby supporting the outer rear end of the cast steel pipe. The temperature difference generated during welding is reduced, and the cast steel pipe is supported at the same time to avoid deformation and bending of the cast steel pipe due to its own weight, making the equipment welding process smoother.

[0016] (2) When the moving clamps on both sides move inward, they cooperate with the push rod, triangular inclined block, slide groove II, fixed slider, rack, gear, and rotating shaft II to make the sealing plate rotate and open, so that the interior of the exhaust duct is connected to the interior of the welding chamber. At this time, the exhaust fan is started to discharge the toxic fumes generated during the welding process from the exhaust duct to the equipment.

[0017] (3) When the anti-deformation support plate moves inward, the equipment supports cast steel pipes of different diameters, but the inner surface curvature of the anti-deformation support plate is fixed, so the anti-deformation support plate cannot adapt to cast steel pipes of different diameters. The positioning support roller first contacts the outer side of the cast steel pipe, and works with the rotating shaft three, slider, fixing plate three, and spring two to make the positioning support roller always move to the appropriate position. At the same time, the spring is always compressed at the same maximum pressure position, which improves the applicability of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall left side structure of the present invention; Figure 3 This is a schematic diagram of some components of the present invention; Figure 4 This is a schematic diagram of the internal structure of some components of the present invention; Figure 5 This is a schematic diagram of the left side structure of the auxiliary smoke extraction component of the present invention; Figure 6 This is a schematic diagram of the right side of the auxiliary smoke extraction component of the present invention; Figure 7This is a schematic diagram of the auxiliary support component structure of the present invention; Figure 8 This is the invention Figure 7 Enlarged structural diagram at point A in the middle.

[0019] Explanation of key figure labels: 100. Support leg; 200. Machining table; 300. Clamping and moving equipment; 400. Moving clamping block; 500. Fixed centering equipment; 600. Welding chamber; 700. Welding adjustment equipment; 800. Rotating equipment; 901. Friction rod; 902. Friction wheel; 903. Shaft 1; 904. Pulley 1; 905. Belt; 906. Pulley 2; 907. Double-acting lead screw; 908. Limiting frame; 909. Slide rail; 910. Slide groove 1; 911. Movable block; 912. Anti-deformation support plate; 1000. Auxiliary smoke exhaust assembly; 1001. Push rod; 1002. Triangular wedge block; 1003. Fixing plate one; 1004. Spring one; 1005. Slide groove two; 1006. Fixed slider; 1007. Fixing rod; 1008. Rack; 1009. Gear; 1010. Rotating shaft two; 1011. Sealing plate; 1012. Smoke exhaust duct; 1100. Auxiliary support assembly; 1101. Movable groove; 1102. Fixed plate two; 1103. Fixed plate three; 1104. Slide three; 1105. Slider; 1106. Spring two; 1107. Rotating shaft three; 1108. Positioning support roller. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] Example 1, as Figures 1-4As shown, the casting steel welding alignment device includes a support leg 100. A processing table 200 is fixedly connected to the top of the support leg 100. A clamping and moving device 300 is movably connected inside the processing table 200. The clamping and moving device 300 drives the moving clamping blocks 400 on both sides to move. Two moving clamping blocks 400 are movably connected to the outside of the clamping and moving device 300. A fixed centering device 500 is movably connected inside the moving clamping blocks 400. The fixed centering device 500 centers and fixes the casting steel pipe fitting. A rotating device 800 is movably connected inside the fixed centering device 500. The rotating device 800 can drive the casting steel pipe fitting to rotate, making the welding process more complete. A welding chamber 600 is fixedly connected to the top center of the processing table 200. A welding adjustment device 700 is movably connected inside the welding chamber 600. The welding adjustment device 700 allows the equipment to be used for casting steel pipe fittings of different diameters during the welding process. A friction rod 901 is fixedly connected to the inner side of the machining table 200. A rotating shaft 903 is movably connected inside the movable clamping block 400. A friction wheel 902 is fixedly connected to the outer side of the rotating shaft 903, and the friction wheel 902 contacts the friction rod 901. A pulley 904 is fixedly connected to the end of the rotating shaft 903 near the center of the movable clamping block 400. A limit frame 908 is fixedly connected to the side of the movable clamping block 400 away from the center of the machining table 200. A double-acting lead screw 907 is movably connected inside the limit frame 908. A pulley 906 is fixedly connected to the outer side of the double-acting lead screw 907. The outer side of the pulley 904 and the belt... A belt 905 is movably connected to the outer side of wheel 2 906. The belt 905 is set so that the power of pulley 1 904 is transmitted to the belt 905, and then the belt 905 transmits the power to pulley 2 906. A slide rail 909 is fixedly connected inside the limiting frame 908. The slide rail 909 is set so that the movable block 911 can move along the slide rail 909. Two movable blocks 911 are movably connected to the left and right sides of the double-acting screw 907. Each movable block 911 has a slide groove 910 inside. The outer side of the slide rail 909 is movably connected to the slide groove 910. An anti-deformation support plate 912 is fixedly connected to the top of the movable block 911.

[0022] The height of the movable block 911 is consistent with the inner height of the limiting frame 908, and the inner surface of the anti-deformation support plate 912 is curved. Each movable clamping block 400 has a placement hole inside, and a cast steel pipe fitting is placed inside the placement hole. Reinforcing ribs are fixedly connected between the support legs 100, and an auxiliary smoke exhaust assembly 1000 is movably connected to the rear side of the welding chamber 600.

[0023] Anti-deformation support plates 912 are installed. When the equipment welds long cast steel pipes, the cast steel pipes on both sides are prone to deformation under the influence of their own weight and temperature. At this time, the clamping and moving equipment 300 is started, and in conjunction with the friction rod 901, friction wheel 902, pulley one 904, belt 905, pulley two 906, double screw 907, and movable block 911, the anti-deformation support plates 912 on both sides are moved inward, so that the outer rear end of the cast steel pipe is wrapped by the anti-deformation support plates 912, thereby supporting the outer rear end of the cast steel pipe. The effect of the temperature difference generated during welding on the cast steel pipe is reduced. At the same time, the cast steel pipe is supported to prevent deformation and bending of the cast steel pipe due to its own weight, making the welding process of the equipment smoother.

[0024] When the above-mentioned equipment is used to weld long cast steel pipes, the cast steel pipes on both sides are prone to deformation due to their own weight and temperature. At this time, the cast steel pipe is placed in the movable clamping blocks 400 on both sides, and the fixed centering device 500 is started to initially center and fix the cast steel pipe. Then, the clamping device 300 is started to move the movable clamping blocks 400 on both sides toward the center of the processing table 200. At this time, the friction rod 901 contacts the friction wheel 902, causing the friction wheel 902 to rotate. The friction wheel 902 drives the rotating shaft 903 to rotate, causing the pulley 904 to rotate with the rotating shaft 903, and the pulley 904 drives the belt. Rotation of belt 905 causes belt 905 to drive pulley 906 to rotate, which in turn drives the double-acting screw 907 to rotate. This causes the movable blocks 911 on both sides to move inward along the slide rail 909, fixing the two sides of the cast steel pipe fitting with the anti-deformation support plate 912. The rear outer side of the cast steel pipe fitting is then wrapped by the anti-deformation support plate 912, thus supporting the rear outer side of the cast steel pipe fitting. This reduces the impact of temperature differences generated during welding on the cast steel pipe fitting and supports it, preventing deformation and bending due to its own weight. This makes the welding process smoother. At this point, the welding adjustment equipment 700 is started to weld the cast steel pipe fitting, thus completing the processing.

[0025] Example 2, as Figures 1-6As shown, based on Embodiment 1, the auxiliary smoke exhaust assembly 1000 includes a push rod 1001, a triangular inclined block 1002, a first fixing plate 1003, a first spring 1004, a second slide groove 1005, a fixed slider 1006, a fixed rod 1007, a rack 1008, a gear 1009, a second rotating shaft 1010, a sealing plate 1011, and a smoke exhaust duct 1012. The push rod 1001 is fixedly connected to the side of the left movable clamping block 400 near the center of the processing table 200. The fixed slider 1006 is fixedly connected to the top of the processing table 200. The triangular inclined block 1002 is movably connected to the top of the processing table 200. A second slide groove 1005 is provided on the top surface of the triangular inclined block 1002. The second slide groove 1005 allows the triangular inclined block 1002 to move along the direction of the second slide groove 1005. The outer side of the fixed slider 1006... The processing table 200 is movably connected to the slide 1005. A fixed plate 1003 is fixedly connected to the top of the processing table 200. A spring 1004 is fixedly connected between the fixed plate 1003 and the triangular inclined block 1002. A fixed rod 1007 is fixedly connected to the top of the triangular inclined block 1002. A rack 1008 is fixedly connected to the top of the fixed rod 1007. A rotating shaft 1010 is movably connected inside the welding chamber 600. A gear 1009 is fixedly connected to one end of the right side of the rotating shaft 1010. The gear 1009 meshes with the rack 1008. A sealing plate 1011 is movably connected to the outside of the rotating shaft 1010. The sealing plate 1011 is set so that after the welding process is completed, the sealing plate 1011 closes to prevent the backflow of flue gas in the exhaust duct 1012. The exhaust duct 1012 is fixedly connected to the rear side of the welding chamber 600.

[0026] An exhaust fan is fixedly connected inside the exhaust duct 1012. An exhaust groove is formed on the rear surface of the welding chamber 600, and the sealing plate 1011 is the same size as the exhaust groove. The interior of the exhaust duct 1012 is connected to the interior of the welding chamber 600, and an auxiliary support assembly 1100 is movably connected inside the anti-deformation support plate 912.

[0027] An auxiliary smoke exhaust assembly 1000 is installed. When the movable clamping blocks 400 on both sides move inward, they cooperate with the push rod 1001, triangular inclined block 1002, slide groove 1005, fixed slider 1006, rack 1008, gear 1009, and rotating shaft 1010 to rotate and open the sealing plate 1011, so that the interior of the smoke exhaust duct 1012 is connected to the interior of the welding chamber 600. At this time, the smoke exhaust fan is started so that the toxic fumes generated during the welding process are discharged from the equipment through the smoke exhaust duct 1012.

[0028] In practical use, when the moving clamping block 400 moves towards the center of the processing table 200, the push rod 1001 moves with the right-side moving clamping block 400 towards the center of the processing table 200, causing the push rod 1001 to contact the triangular inclined block 1002. The triangular inclined block 1002 moves forward along the direction of the second slide groove 1005, causing the rack 1008 to move forward with the triangular inclined block 1002. The gear 1009 is driven to rotate by the rack 1008, causing the second rotating shaft 1010 to rotate with the gear 1009. This causes the sealing plate 1011 to rotate and open, connecting the exhaust duct 1012 with the inside of the welding chamber 600. At this time, the exhaust fan is started, allowing the toxic fumes generated during the welding process to be discharged from the equipment through the exhaust duct 1012, thereby protecting the safety of the operators and protecting the environment.

[0029] Example 3, as Figures 2-8 As shown, based on Embodiment 1 or Embodiment 2, the auxiliary support assembly 1100 includes a movable groove 1101, a second fixed plate 1102, a third fixed plate 1103, a third sliding groove 1104, a slider 1105, a second spring 1106, a third rotating shaft 1107, and a positioning support roller 1108. Each anti-deformation support plate 912 has a movable groove 1101 on its upper and lower sides. The second fixed plate 1102 is fixedly connected to both sides of the movable groove 1101. Each second fixed plate 1102 has a fixed support roller on its side closest to the center of the anti-deformation support plate 912. Plate 3 1103, fixed plate 3 1103 has a sliding groove 3 1104 inside, the sliding groove 3 1104 is set so that the slider 1105 can move along the sliding groove 3 1104. The slider 1105 is movably connected inside the sliding groove 3 1104. The slider 1105 is fixedly connected to the rear side of the sliding groove 3 1104. The spring 2 1106 is set so that the slider 1105 can automatically return to its original position. The slider 1105 is movably connected to the rotating shaft 3 1107. The outer side of the rotating shaft 3 1107 is fixedly connected to the positioning support roller 1108.

[0030] The length of the positioning support roller 1108 is less than the spacing between each fixed plate 3 1103, and the spacing between each fixed plate 3 1103 is the same as the length of the movable groove 1101. The length of the spring 2 1106 is less than the length of the slide groove 3 1104.

[0031] An auxiliary support assembly 1100 is provided. When the anti-deformation support plate 912 moves inward, since the equipment supports cast steel pipes of different diameters, but the inner surface curvature of the anti-deformation support plate 912 is fixed, it cannot adapt to cast steel pipes of different diameters. The positioning support roller 1108 first contacts the outer side of the cast steel pipe, and works with the rotating shaft 1107, slider 1105, fixing plate 1103, and spring 1106 to ensure that the positioning support roller 1108 always moves to the appropriate position. At the same time, the spring 1106 is always compressed at the same maximum pressure position, thereby expanding the applicability of the equipment.

[0032] In practical use, when the anti-deformation support plate 912 moves inward, because the equipment supports cast steel pipes of different diameters, and the inner surface curvature of the anti-deformation support plate 912 is fixed, it cannot adapt to cast steel pipes of different diameters. At this time, the positioning support roller 1108 contacts the outer surface of the cast steel pipe, and the anti-deformation support plate 912 continues to move inward, causing the positioning support roller 1108 to drive the slider 1105 to move backward along the slide groove 1104, compressing the spring 1106. When the spring 1106 is compressed to the maximum pressure position, the movement of the movable block 911 is restricted by the spring 1106, which obstructs the rotation of the pulley 906, causing the belt 905 to slip. Thus, when the diameter of the cast steel pipe is large, the anti-deformation support plate 912 will not move inward continuously, thereby making the equipment suitable for cast steel pipes of different diameters and improving the applicability of the equipment.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A welding alignment device for cast steel parts, including support legs, characterized in that, A processing table is fixedly connected to the top of the support leg. A clamping and moving device is movably connected inside the processing table. Two moving clamping blocks are movably connected to the outside of the clamping and moving device. A fixed centering device is movably connected inside the moving clamping blocks. A rotating device is movably connected inside the fixed centering device. A welding chamber is fixedly connected to the top center of the processing table. A welding adjustment device is movably connected inside the welding chamber. A friction rod is fixedly connected to the inner side of the processing table. A rotating shaft is movably connected to the inside of the movable clamping block. A friction wheel is fixedly connected to the outer side of the rotating shaft. The friction wheel contacts the friction rod. A pulley is fixedly connected to the end of the rotating shaft near the center of the movable clamping block. A limit frame is fixedly connected to the side of the movable clamping block away from the center of the processing table. A double-acting screw is movably connected to the inside of the limit frame. A pulley is fixedly connected to the outer side of the double-acting screw. A belt is movably connected to the outer sides of the pulley and the pulley. A slide rail is fixedly connected to the inside of the limit frame. Two movable blocks are movably connected to the left and right sides of the double-acting screw. Each movable block has a groove inside. The outer side of the slide rail is movably connected to the groove. An anti-deformation support plate is fixedly connected to the top of the movable block. An auxiliary smoke exhaust assembly is movably connected to the rear side of the welding chamber; The auxiliary smoke exhaust assembly includes a push rod, a triangular inclined block, a first fixed plate, a first spring, a second slide groove, a fixed slider, a fixed rod, a rack, a gear, a second rotating shaft, a sealing plate, and a smoke exhaust duct. A push rod is fixedly connected to the side of the movable clamping block on the left side near the center of the processing table. A fixed slider is fixedly connected to the top of the processing table. A triangular inclined block is movably connected to the top of the processing table. A second slide groove is formed on the top surface of the triangular inclined block. The outer side of the fixed slider is movably connected to the second slide groove. A first fixed plate is fixedly connected to the top of the processing table. A first spring is fixedly connected between the first fixed plate and the triangular inclined block. A fixed rod is fixedly connected to the top of the triangular inclined block. A rack is fixedly connected to the top of the fixed rod. A second rotating shaft is movably connected inside the welding chamber. A gear is fixedly connected to one right end of the second rotating shaft, and the gear meshes with the rack. A sealing plate is movably connected to the outer side of the second rotating shaft. A smoke exhaust duct is fixedly connected to the rear side of the welding chamber. The interior of the exhaust duct is connected to the interior of the welding chamber, and the interior of the anti-deformation support plate is movably connected to an auxiliary support component; The auxiliary support assembly includes a movable groove, a second fixed plate, a third fixed plate, a third sliding groove, a slider, a second spring, a third rotating shaft, and a positioning support roller. Each anti-deformation support plate has a movable groove on its upper and lower sides. The second fixed plate is fixedly connected to both sides of the movable groove. The third fixed plate is fixedly connected to the side of each second fixed plate near the center of the anti-deformation support plate. The third fixed plate has a sliding groove inside. The slider is movably connected inside the sliding groove. The second spring is fixedly connected between the slider and the rear side of the sliding groove. The third rotating shaft is movably connected inside the slider. The positioning support roller is fixedly connected to the outer side of the third rotating shaft.

2. The welding alignment device for cast steel parts according to claim 1, characterized in that, The height of the movable block is the same as the inner height of the limiting frame, and the inner surface of the anti-deformation support plate is an arc surface.

3. The welding alignment device for cast steel parts according to claim 2, characterized in that, Each of the moving clamps has a placement hole inside, and a cast steel pipe is placed inside the placement hole.

4. The welding alignment device for cast steel parts according to claim 3, characterized in that, The supporting legs are fixedly connected by reinforcing ribs.

5. The welding alignment device for cast steel parts according to claim 4, characterized in that, An exhaust fan is fixedly connected inside the exhaust duct, and an exhaust groove is provided on the rear surface of the welding chamber. The size of the sealing plate is the same as that of the exhaust groove.

6. The welding alignment device for cast steel parts according to claim 5, characterized in that, The length of the positioning support roller is less than the spacing between each of the three fixed plates, and the spacing between each of the three fixed plates is the same as the length of the movable groove.

7. The welding alignment device for cast steel parts according to claim 6, characterized in that, The length of the second spring is less than the length of the third groove.

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