A welding device for processing a special-shaped pipe

Abstract

The present application relates to the technical field of pipeline welding, and particularly relates to a welding equipment for special-shaped pipeline processing, which comprises a welding gun and a round rod connected to the welding gun; further comprises a bending rod, a notched cylinder and a sheet; the round rod is rotationally connected with the bending rod; the bending rod is fixedly connected with the notched cylinder; the bending rod is connected with the sheet for positioning; the bending rod is provided with a channel. Through cooperation of the round rod and the bending rod, manual operation only needs to drive the bending rod to do circular motion, and reciprocatingly swing the welding gun, so that the welding operation can be completed, without respectively controlling the welding gun and the welding rod to do circular motion, and without real-time feeding operation on the welding rod, so that the operation steps are reduced, the operation difficulty is reduced, meanwhile, the bending rod is also used for cooperating with the sheet to position the welding gun and the welding rod, so that the welding gun and the welding rod are conveniently driven to move along the gap of two pipe fittings, and the manual alignment and positioning difficulty is greatly reduced.

Description

Technical Field

[0001] This invention relates to the technical field of pipe welding. More specifically, this invention relates to welding equipment for processing irregularly shaped pipes. Background Technology

[0002] When performing pipe butt welding, operators typically first use clamps to securely hold the two pipe sections to be welded, ensuring the ends are aligned. Then, the welder holds the welding rod in their left hand and the welding torch in their right, moving both synchronously along the pipe joint, continuously oscillating the torch to control the width and quality of the molten pool. The high-temperature arc generated by the torch melts the welding rod, filling and covering the joint area with molten metal. As welding progresses, the welder must adjust the position of the welding rod held in their left hand as needed, gradually feeding in new sections of the rod for the welding operation.

[0003] The entire process requires a high degree of hand-eye coordination: the operator must move the welding torch and electrode smoothly along the circumferential weld seam, while controlling the torch's swing amplitude and angle, as well as the electrode's feeding rhythm. This operation method, which relies heavily on manual experience, is not only technically challenging but also extremely labor-intensive. Summary of the Invention

[0004] To overcome the high operational difficulty caused by the need for welders to coordinate their hands to maintain a stable trajectory, swing amplitude, and feed rhythm when welding pipes, this invention provides a welding device for processing irregularly shaped pipes.

[0005] The technical solution is: a welding device for processing irregular pipes, including a welding torch and a round rod connected to the welding torch; it also includes a bending rod, a notched cylinder and a thin plate; the bending rod is rotatably connected to the round rod; the notched cylinder is fixedly connected to the bending rod; the thin plate for positioning is connected to the bending rod; and a channel is opened on the bending rod.

[0006] Furthermore, it also includes a disassembly and assembly assembly, which includes a fixing block one and a fixing block two; the fixing block one is fixedly connected to the round rod, and the fixing block is fitted onto the welding gun; the fixing block two is fixedly connected to the fixing block one, and the fixing block two is fitted onto the welding gun; the fixing block one and the fixing block two are clamped together to fix the round rod onto the welding gun.

[0007] Furthermore, it also includes a sheath; the outer side of the bent rod is fixed with a sheath.

[0008] Furthermore, the channel consists of a straight, elongated pipe at the top and a tapered channel at the bottom; the maximum inner diameter of the channel is greater than the outer diameter of the welding electrode.

[0009] Furthermore, it also includes a clearance assembly, which includes a connecting block and a torsion spring shaft; the connecting block is fixedly connected to the bending rod; the torsion spring shaft is rotatably connected to the connecting block, and the torsion spring shaft is connected to the sheet.

[0010] Furthermore, it also includes a fixing component, which includes a pressure plate and a slider; the pressure plate is damped and slidably connected to the bending rod; the slider is fixedly connected to the pressure plate and slidably connected to the bending rod.

[0011] Furthermore, it also includes a lever; the lever is fixedly connected to the slider.

[0012] Furthermore, it also includes a rubber pad; a rubber pad is fixed to the pressure plate.

[0013] Furthermore, a groove is provided on the bent rod.

[0014] Furthermore, it also includes auxiliary components, which include a fixed post and a spring; the fixed post is slidably connected to the bending rod; the spring is fixedly connected to the fixed post and the spring is fixedly connected to the bending rod; the end of the fixed post facing the slider is set as a spherical surface; a second groove is opened on the slider and the end of the fixed post is located in the second groove; a third groove is opened on the slider.

[0015] The beneficial effects are as follows: First, by using the round rod and the bending rod in combination, the operator only needs to drive the bending rod to make a circular motion and swing the welding gun back and forth to complete the welding operation. There is no need to control the welding gun and the welding rod to make circular motion separately, nor is there a need to feed the welding rod in real time. This reduces the number of operation steps and helps to reduce the difficulty of operation. At the same time, the bending rod is also used to cooperate with the thin sheet to position the welding gun and the welding rod, making it easier for the operator to drive the welding gun and the welding rod to move along the gap between the two pipes, which greatly reduces the difficulty of manual alignment and positioning. Second, by using the combination of fixing block one and fixing block two, the welding gun can be disassembled for regular welding operations, making it highly versatile; Third, by setting the channel as a straight elongated pipe at the top and a tapered channel at the bottom, the contact area is reduced while retaining the function of positioning the welding rod, thereby significantly reducing frictional resistance and preventing the welding rod from loosening or breaking at the welding point. Fourth, by cooperating with the connecting block and the torsion spring shaft, the thin sheet will automatically complete the avoidance operation after contacting the weld, so as to avoid affecting the final stage of welding operation; Fifth, in the initial stage of welding, the welding rod is fixed by the pressure plate and rubber pad, which helps to reduce the difficulty of operation. In addition, the slider is used to press the welding rod tightly on the bending rod, making it easy to remove the welding rod after welding. Furthermore, in the initial stage of welding, the insertion of the end of the fixing column into the groove three can produce a noticeable jolt, reminding the operator to stop pushing the lever, thus preventing the slider from moving too far and bending the welding rod, thereby avoiding affecting subsequent welding operations. Attached Figure Description

[0016] Figure 1 A schematic diagram of the welding equipment for processing irregularly shaped pipes according to the present invention is shown; Figure 2 A cross-sectional view of the welding equipment for processing irregularly shaped pipes according to the present invention is shown; Figure 3 A schematic diagram of the structure of the bending rod of the present invention is shown; Figure 4 A schematic diagram of the avoidance component of the present invention is shown; Figure 5 A schematic diagram of the fixing component of the present invention is shown; Figure 6 A schematic diagram of the auxiliary component of the present invention is shown.

[0017] Reference numerals: 1-Welding torch, 2-Round rod, 3-Bending rod, 4-Notched cylinder, 5-Sheet, 6-Welding rod, 7-Pipe fitting, 201-Fixing block one, 202-Fixing block two, 203-Sheath, 204-Connecting block, 205-Torsion spring shaft, 206-Pressure plate, 207-Slider, 208-Pulling block, 209-Rubber pad, 2010-Fixing column, 2011-Spring, 891-Channel, 892-Groove one, 893-Groove two, 894-Groove three. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] Example 1: A welding device for processing irregularly shaped pipes, such as... Figures 1-5 As shown, it includes a welding torch 1 and a round rod 2; the round rod 2 is connected to the welding torch 1; it also includes a bent rod 3, a notched cylinder 4 and a thin sheet 5; the bent rod 3 is rotatably connected to the round rod 2, and the bent rod 3 is made of alloy material; the notched cylinder 4 is bolted to the bent rod 3, and the notched cylinder 4 is made of alloy material; the thin sheet 5 is connected to the bent rod 3; a channel 891 is opened on the bent rod 3, and the welding rod 6 passes through the channel 891.

[0020] It also includes a disassembly and assembly assembly, which includes a first fixing block 201 and a second fixing block 202; the first fixing block 201 is welded onto the round rod 2 and the first fixing block 201 is fitted onto the welding gun 1; the second fixing block 202 is bolted onto the first fixing block 201 and the second fixing block 202 is fitted onto the welding gun 1; the first fixing block 201 and the second fixing block 202 are clamped together to fix the round rod 2 onto the welding gun 1.

[0021] It also includes a sheath 203; the sheath 203 is fixed to the outside of the bending rod 3, and the bending rod 3 can be gripped by the flexible sheath 203, which helps to improve comfort.

[0022] Channel 891 consists of a straight, elongated tube at the top and a tapered channel at the bottom; the maximum inner diameter of channel 891 is greater than the outer diameter of welding electrode 6.

[0023] It also includes a clearance component, which includes a connecting block 204 and a torsion spring shaft 205; the connecting block 204 is welded onto the bent rod 3, and the connecting block 204 is made of alloy material; the torsion spring shaft 205 is rotatably connected to the connecting block 204, and the torsion spring shaft 205 is connected to the sheet 5, and the sheet 5 can rotate around the torsion spring shaft 205.

[0024] It also includes a fixing component, which includes a pressure plate 206 and a slider 207; the pressure plate 206 is damped and slidably connected to the bending rod 3, and the welding rod 6 is fixed by the pressure plate 206; the slider 207 is bolted to the pressure plate 206, and the slider 207 is slidably connected to the bending rod 3.

[0025] It also includes a lever 208; the lever 208 is bolted to the slider 207, and the slider 207 is driven to move by the lever 208, which in turn drives the pressure plate 206 to move.

[0026] It also includes a rubber pad 209; the rubber pad 209 is fixed on the pressure plate 206, and the pressure plate 206 drives the rubber pad 209 to press the welding rod 6, and fix it by friction.

[0027] The bending rod 3 has a groove 892, which guides the welding rod 6, making it easier to insert the welding rod 6 into the channel 891.

[0028] During welding, the thin sheet 5 is manually inserted into the gap between the two pipe fittings 7 to be welded, and the notched cylinder 4 abuts against the outer surface of the two pipe fittings 7. At this time, the positional relationship between the welding equipment and the pipe fittings 7 is as follows: Figure 1 and Figure 2As shown, the operator then inserts the welding rod 6 from the upper end of the channel 891 until the lower end of the welding rod 6 emerges from the lower opening of the channel 891 and moves it to the side of the welding gun 1. The operator uses their right hand to grip the upper end of the bending rod 3 and simultaneously pinches the welding rod 6 to fix the relative position of the welding equipment and the welding rod 6. Then, the lower end of the welding rod 6 is welded to the gap between the two pipe fittings 7 using the welding gun 1. At this time, the operator controls their right hand to move downwards, so that their right hand grips the middle of the bending rod 3 and no longer pinches the welding rod 6. Then, the operator uses their right hand to drive the bending rod. Rod 3 revolves around pipe fitting 7 in a circular motion. Initially, the lower end of welding rod 6 is welded to the gap between the two pipe fittings 7. As the bending rod 3 moves, welding rod 6 is passively pulled out from channel 891, and the bending rod 3 limits its movement, aligning its axis with the gap between the two pipe fittings 7. Simultaneously, the operator manually swings welding torch 1 back and forth with their left hand, causing torch 1 to reciprocate around the circular rod 2 as its axis. The welding rod 6 is positioned between the circular rod 2 and the bending rod 3. Under the constraint, the welding head of the welding torch 1 can always reciprocate regularly near the welding position. This allows the operator to manually weld the released welding rod 6 gradually into the gap between the two pipe fittings 7 by reciprocating the welding torch 1. During this process, the thin plate 5 moves within the gap between the two pipe fittings 7, thus positioning the bending rod 3 and its components. This facilitates manual movement of the welding torch 1, while the welding rod 6 is pulled out along the gap, significantly reducing the difficulty of manual alignment and positioning. In use, the round rod 2 and the bending rod 3 work together. The operator only needs to move the bending rod 3 in a circular motion and reciprocate the welding torch 1 to complete the welding operation. There is no need to separately control the circular motion of the welding torch 1 and the welding rod 6, nor is it necessary to release the welding rod 6 at appropriate times. This reduces the number of steps and lowers the operational difficulty. Simultaneously, the bending rod 3 also works with the thin plate 5 to position the welding torch 1 and the welding rod 6, facilitating manual movement of the welding torch 1 and the welding rod 6 along the gap between the two pipe fittings 7, further reducing the difficulty of manual alignment and positioning.

[0029] When using this equipment for routine welding, the bolts between fixing block 1 201 and fixing block 202 are unscrewed manually, thereby stopping fixing block 1 201 and fixing block 202 from being fixed on welding gun 1. Then welding gun 1 can be removed and other parts to be welded can be welded through welding gun 1. In use, by cooperating with fixing block 1 201 and fixing block 202, welding gun 1 can be disassembled for routine welding operations, making it highly versatile.

[0030] During the welding process, the end of the welding rod 6 is welded to the gap between the two pipe fittings 7. When the bending rod 3 is manually driven to make a circular motion, the welding rod 6 is automatically released from the channel 891. During this process, the welding rod 6 and the bending rod 3 will slide relative to each other. If the channel 891 is too small, the contact area between the welding rod 6 and the inner wall of the channel 891 will be large, resulting in high friction. Since the welding position between the end of the welding rod 6 and the pipe fitting 7 has not been completely cooled and solidified, the welding position of the welding rod 6 may be loosened or even broken. If the channel 891 is set too large, the positioning effect of the channel 891 on the welding rod 6 will be greatly reduced. Therefore, the channel 891 is composed of a straight elongated pipe at the top and a tapered channel at the bottom. The inner diameter of the elongated pipe is larger than the outer diameter of the welding rod 6, and the inner diameter of the lower opening of the tapered channel is slightly larger. The electrode diameter is larger than that of the welding electrode 6. The electrode 6 is limited by the lower opening of the tapered channel, so that the released electrode 6 can be aligned with the gap between the two pipe fittings 7. When the electrode 6 slides in the channel 891, the electrode 6 only contacts the upper and lower ends of the channel 891. When the upper end of the electrode 6 enters the interior of the channel 891, it no longer contacts the upper end of the channel 891. At this time, the upper end of the electrode 6 contacts the inner wall of the channel 891. The contact area is small, which can greatly reduce the frictional resistance and avoid the problem of the electrode 6 being loosened or broken. In use, by setting the channel 891 as a straight long oval pipe at the top and a tapered channel at the bottom, the channel 891 can retain the positioning function of the electrode 6 while reducing the contact area, which can greatly reduce the frictional resistance and avoid the electrode 6 being loosened or broken at the welding position.

[0031] In the final stage of welding, as the welding equipment approaches a full circle, the thin sheet 5 moving between the two pipe fittings 7 may collide with the already welded seam, preventing further movement of the welding equipment. Therefore, a clearance component is installed on the bending rod 3. When the welding equipment has nearly completed a full circle, the thin sheet 5 contacts the already welded seam. The bending rod 3 and its components are then manually moved, and the weld seam limits the movement of the thin sheet 5, causing it to rotate around the torsion spring shaft 205, thus completing the clearance operation and preventing interference with the movement of the welding equipment. At this point, the thin sheet 5 moves away from the gap between the two pipe fittings 7. Furthermore, to achieve the positioning effect, manual positioning of the bending rod 3 and its parts is required to complete the final welding operation. Simultaneously, in the final stage of welding, the notched cylinder 4 will move to the already welded seam. Since the weld seam usually bulges on the surface of the pipe fitting 7, the notch on the notched cylinder 4 will avoid the bulging weld seam, allowing the notched cylinder 4 to still fit against the surface of the pipe fitting 7, providing stable support for the welding equipment. In use, the connecting block 204 and the torsion spring shaft 205 cooperate to automatically complete the avoidance operation after the thin sheet 5 contacts the weld seam, avoiding any impact on the final welding operation.

[0032] In the initial stage of welding the lower end of the welding rod 6 onto the pipe fitting 7, the operator needs to use their right hand to simultaneously clamp and fix the bending rod 3 and the welding rod 6, which is difficult to operate. Therefore, a fixing component is set on the bending rod 3. The operator inserts the welding rod 6 into the channel 891 and aligns the lower end of the welding rod 6 with the welding gun 1. Then, the operator moves the slider 207 by using the toggle block 208. The slider 207 moves the pressure plate 206, which in turn moves the rubber pad 209, causing the rubber pad 209 to contact the welding rod 6. The rubber pad 209 fixes the welding rod 6 through friction. Then, the welding gun 1 welds the lower end of the welding rod 6 onto the pipe fitting 7. Finally, the operator moves the rubber pad 209 back to its original position by using the toggle block 208. In use, fixing the welding rod 6 with the pressure plate 206 and the rubber pad 209 in the initial stage of welding helps to reduce the difficulty of manual operation.

[0033] Example 2, based on Example 1, such as Figure 6 As shown, it also includes auxiliary components, including a fixed post 2010 and a spring 2011; the fixed post 2010 is slidably connected to the bending rod 3; the spring 2011 is fixedly connected to the bending rod 3, and the spring 2011 is fixedly connected to the fixed post 2010; the end of the fixed post 2010 facing the slider 207 is set as a spherical surface; the slider 207 has a second groove 893, and the end of the fixed post 2010 is located in the second groove 893; the slider 207 has a third groove 894.

[0034] After welding, the welding rod 6 needs to be removed manually before the weld is fully cured. However, after the upper end of the welding rod 6 moves to the inside of channel 891, the manual operator needs to pinch the part of the welding rod 6 near the welding position to remove it. This position is not only interfered with by the welding torch 1 and bending rod 3, but the weld is also at a high temperature, making the removal process inconvenient. Therefore, an auxiliary component is added. After welding, the manual operator pushes the slider 207 via the lever 208, which moves the pressure plate 206, which in turn moves the rubber pad 209. During this process, the slider 207... A pressing force is applied to the end of the fixed column 2010, causing it to move towards the spring 2011 and compress it. This compresses the spring 2011, thereby pressing the welding rod 6 against the inner wall of the bending rod 3 via the pressure plate 206. Then, the bending rod 3 and its components are manually moved to remove the welding rod 6 from the welding position, thus avoiding difficulty in removal. In the initial stage of welding, the slider 207 is moved by the pry block 208, which in turn moves the pressure plate 206, which in turn moves the rubber pad 209. During this process, the slider 207 presses against the fixed column 2010. A squeezing force is applied to the end, causing the fixed post 2010 to move towards the spring 2011 and compress the spring 2011. When the groove 894 of the slider 207 aligns with the fixed post 2010, the spring 2011 rebounds, causing the fixed post 2010 to move and insert its end into the groove 894, thus fixing the slider 207 and its parts. At this time, the rubber pad 209 just contacts the welding rod 6, and the rubber pad 209 fixes the welding rod 6 through friction. When the end of the fixed post 2010 is inserted into the groove 894, a distinct segment is formed. The sliding block 207 serves as a reminder to manually stop pushing the lever 208, preventing the slider 207 from moving too far and bending the welding rod 6, thus avoiding any impact on subsequent welding operations. During use, the slider 207 also presses the welding rod 6 firmly onto the bending rod 3, allowing for easy manual removal of the welding rod 6 after welding. Simultaneously, in the initial stage of welding, the insertion of the end of the fixing post 2010 into the groove 3 894 creates a distinct tactile feedback, reminding the manual to stop pushing the lever 208 and preventing the slider 207 from moving too far and bending the welding rod 6, thus avoiding any impact on subsequent welding operations.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding method based on welding equipment for processing irregularly shaped pipes, wherein the welding equipment includes a welding torch (1) and a round rod (2) connected to the welding torch (1); characterized in that, It also includes a bent rod (3), a notched cylinder (4) and a thin plate (5); the bent rod (3) is rotatably connected to the round rod (2); the notched cylinder (4) is fixed to the bent rod (3); the thin plate (5) for positioning is connected to the bent rod (3); a channel (891) is opened on the bent rod (3). The channel (891) consists of a straight elongated pipe at the top and a tapered channel at the bottom; the maximum inner diameter of the channel (891) is greater than the outer diameter of the welding rod (6); It also includes a clearance assembly, which includes a connecting block (204) and a torsion spring shaft (205); the connecting block (204) is fixedly connected to the bending rod (3); the torsion spring shaft (205) is rotatably connected to the connecting block (204), and the torsion spring shaft (205) is connected to the sheet (5); It also includes a fixing component, which includes a pressure plate (206) and a slider (207); the pressure plate (206) is damped and slidably connected to the bending rod (3); the slider (207) is fixedly connected to the pressure plate (206), and the slider (207) is slidably connected to the bending rod (3); It also includes auxiliary components, including a fixed post (2010) and a spring (2011); the fixed post (2010) is slidably connected to the bending rod (3); the spring (2011) is fixedly connected to the fixed post (2010), and the spring (2011) is fixedly connected to the bending rod (3); the end of the fixed post (2010) facing the slider (207) is set as a spherical surface; the slider (207) has a second groove (893), and the end of the fixed post (2010) is located in the second groove (893); the slider (207) has a third groove (894). It also includes a lever (208); the lever (208) is fixedly connected to the slider (207); It also includes a rubber pad (209); the rubber pad (209) is fixedly attached to the pressure plate (206); During welding, the operator inserts the thin sheet (5) into the gap between the two pipe fittings (7) to be welded. The notched cylinder (4) abuts against the outer surface of the two pipe fittings (7). The operator inserts the welding rod (6) into the channel (891) and aligns the lower end of the welding rod (6) with the welding gun (1). The operator then moves the slider (207) by using the toggle block (208). The slider (207) moves the pressure plate (206), and the pressure plate (206) moves the rubber pad (209) so that the rubber pad (209) contacts the welding rod (6). The rubber pad (209) fixes the welding rod (6) by friction. Then, the lower end of the welding rod (6) is welded to the pipe fitting (7) by the welding gun (1). The operator then moves the rubber pad (209) back to its original position by using the toggle block (208). Then, using the right hand, the bending rod (3) is driven to move in a circular motion around the pipe (7). In the initial stage, the lower end of the welding rod (6) has been welded to the gap between the two pipes (7). Thus, the welding rod (6) will be passively pulled out from the channel (891) when the bending rod (3) moves. The bending rod (3) limits the welding rod (6) so that its axis is aligned with the gap between the two pipes (7). At the same time, the welding gun (1) is manually swung back and forth with the left hand, so that the welding gun (1) swings back and forth around the round rod (2) as the axis. Under the restriction of the round rod (2) and the bending rod (3), the welding head of the welding gun (1) can always swing back and forth regularly near the welding position, and gradually weld the released welding rod (6) to the gap between the two pipes (7).

2. The welding method based on welding equipment for processing irregularly shaped pipes according to claim 1, characterized in that, It also includes a disassembly and assembly assembly, which includes a fixing block one (201) and a fixing block two (202); the fixing block one (201) is fixedly connected to the round rod (2), and the fixing block one (201) is fitted onto the welding gun (1); the fixing block two (202) is fixedly connected to the fixing block one (201), and the fixing block two (202) is fitted onto the welding gun (1); the fixing block one (201) and the fixing block two (202) are clamped together to fix the round rod (2) onto the welding gun (1).

3. The welding method based on welding equipment for processing irregularly shaped pipes according to claim 2, characterized in that, It also includes a sheath (203); the outer side of the bent rod (3) is fixed with a sheath (203).

4. The welding method based on welding equipment for processing irregularly shaped pipes according to claim 1, characterized in that, A groove (892) is provided on the bent rod (3).

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