A smoke dust collection type alloy steel pipe butting outer diameter welding device

Abstract

This invention relates to the field of welding equipment technology and discloses a fume-collecting alloy steel pipe butt welding device, including a fixed base, a movable welding frame, and welding components. The movable welding frame includes a movable seat slidably mounted on the top of the fixed base, a fixed frame fixedly connected to the top of the movable seat, a welding fume purifier fixedly connected to the top of the fixed frame, and a welding robot fixedly connected to one side of the welding fume purifier. The welding fumes generated by this invention are captured simultaneously from above and both sides, preventing the fumes from spreading and escaping to the surroundings. With the help of a telescopic smoke pipe and an auxiliary hose, the fumes are uniformly drawn into the welding fume purifier. Compared with a single top-collecting method, the fume capture coverage is wider, and the dust removal effect is significantly enhanced. With the help of an arc-shaped auxiliary fume hood, it achieves a wraparound fit, can adapt to alloy steel pipes of various outer diameters, has strong versatility, does not require tooling changes, and has an integrated structure, which greatly reduces the area occupied by workshop equipment and facilitates the orderly layout of the production line.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a fume-collecting alloy steel pipe butt welding device. Background Technology

[0002] Alloy steel pipes, with their superior properties such as high strength, high temperature resistance, and corrosion resistance, are widely used in petrochemical, power engineering, and high-end equipment manufacturing industries. Circumferential welding of the outer diameter of the pipe joint is a core process in its production and installation, and the welding quality directly determines the pipe's sealing performance and service life. Currently, most existing alloy steel pipe joint welding equipment focuses on pipe clamping, alignment, and welding formation, which can basically complete the joint welding operation, but significant technical deficiencies still exist in practical applications.

[0003] Most existing welding equipment features independent, external fume collection structures, separating the welding operation from the fume collection equipment, resulting in extremely low integration. During operation, the fume collection equipment must be placed and fixed separately, with manual adjustment of its position and angle. This not only increases the setup process and operation time, reducing overall welding efficiency, but also occupies a significant amount of workspace, making it particularly unsuitable for confined work environments such as construction sites and small workshops. Furthermore, the independent fume collection equipment cannot be precisely matched to the welding station, making it difficult to target the core area where welding fumes are generated, leading to incomplete fume collection. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a fume-collecting alloy steel pipe butt welding device. It features an integrated structure, significantly reducing the workshop equipment footprint and facilitating the orderly arrangement of production lines. It solves the problem of having to separately place and fix fume-collecting equipment and manually adjust the collection position and angle during operation, which not only increases the equipment setup process and operation time but also reduces the overall welding efficiency.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a fume-collecting alloy steel pipe butt welding device, comprising a fixed base, a movable welding frame and a welding assembly, wherein the movable welding frame includes a movable seat slidably mounted on the top of the fixed base, a fixed frame fixedly connected to the top of the movable seat, a welding fume purifier fixedly connected to the top of the fixed frame, and a welding robot fixedly connected to one side of the welding fume purifier, and the welding of the alloy steel pipe is achieved by the welding robot; The welding assembly includes a lifting frame, with a top fume hood fixedly connected to the top of the lifting frame. The top fume hood has folding structures on both sides, and a side fume collection assembly is provided at one end of each folding structure. A telescopic fume pipe is fixedly connected to the top of the top fume hood, and the telescopic fume pipe is connected to a welding fume purifier. The top fume hood and the side fume collection assemblies on both sides collect the fumes comprehensively.

[0006] Preferably, the fixed base includes a fixed body, with pipe rotating clamps fixedly connected to both sides of the fixed body. A drive motor is provided at one end of the fixed body, and a moving screw is fixedly connected to the output end of the drive motor. The moving screw is rotatably mounted on the side of the fixed body. Sliding rails are fixedly connected to both sides of the top of the fixed body. The moving seat is slidably mounted on the outer surface of the sliding rails, and one end of the moving seat is threaded onto the outer surface of the moving screw.

[0007] Preferably, guide frames are fixedly connected to both sides of the top of the fixed frame, both sides of the guide frames are limiting posts, and a support plate is fixedly connected to the middle of the guide frames.

[0008] Preferably, the top of the support plate is provided with a lifting drive component, the output end of the lifting drive component is fixedly connected to the lifting frame, and sliding blocks are provided on both sides of the lifting frame, and the sliding blocks are slidably installed on the outer surface of the limiting column to ensure that the lifting frame can be raised and lowered stably.

[0009] Preferably, the folding structure includes support frames fixedly installed on both sides of the bottom of the lifting frame. A movable frame is slidably installed inside the support frame. A connecting rod is rotatably installed on the side of the movable frame. The connecting rod is rotatably installed at one end of the top of the side smoke collection assembly. Push cylinders are provided on both sides of the lifting frame. The output end of the push cylinder is connected to the top of the movable frame, thereby driving the movable frame to rise and fall above the support frame, realizing the folding and unfolding of the side smoke collection assembly. Auxiliary hoses are fixedly connected to the sides of the side smoke collection assemblies on both sides. The auxiliary hoses are connected to the welding fume purifier. One end of the side smoke collection assembly is rotatably connected to the support frame.

[0010] Preferably, the side smoke collection assembly includes an auxiliary smoke inlet hood, with main ball bearings rotatably installed at the bottom corners of the auxiliary smoke inlet hood to reduce the friction between the auxiliary smoke inlet hood and the outer surface of the alloy steel pipe, allowing the alloy steel pipe to rotate at the bottom of the auxiliary smoke inlet hood. Both sides of the auxiliary smoke inlet hood are provided with cavities, and air guide assemblies are provided inside the cavities.

[0011] Preferably, the air guide assembly includes multiple spring telescopic rods, each with an auxiliary ball bearing at its bottom and a guide plate fixedly connected to its side. The guide plate is movably installed inside the auxiliary smoke inlet hood cavity.

[0012] Preferably, the multiple guide plates are arranged in a folded manner, and the multiple spring telescopic rods are arranged in a fan shape inside the auxiliary smoke inlet hood cavity to ensure stable airflow.

[0013] (III) Beneficial Effects Compared with the prior art, the present invention provides a fume-collecting alloy steel pipe butt welding device, which has the following beneficial effects: 1. This fume-collecting alloy steel pipe butt welding device forms a fully encircling fume collection chamber by setting a top fume inlet hood and two expandable side fume collection components. The welding fumes are captured simultaneously from the top and sides, preventing the fumes from spreading and escaping. With the help of telescopic fume pipes and auxiliary hoses, the fumes are uniformly drawn into the welding fume purifier. Compared with a single top fume collection method, the fume capture coverage is wider and the dust removal effect is significantly enhanced.

[0014] 2. This dust collection alloy steel pipe butt welding device uses a folding transmission mechanism composed of a cylinder, a movable frame, and a connecting rod to control the retraction and extension of the side smoke collection components. The fan-shaped spring telescopic rod inside the cavity can adaptively expand and contract with the outer wall of the steel pipe. Combined with the arc-shaped auxiliary smoke inlet hood, it can achieve a wrap-around fit and can be adapted to alloy steel pipes of various outer diameters. It has strong versatility and does not require tooling changes.

[0015] 3. This fume-collecting alloy steel pipe butt welding device integrates the welding fume purifier, welding robot, and all-round fume collection components onto the same mobile welding frame. It moves synchronously with the welding unit, eliminating the need for separate mobile dust removal equipment. The integrated structure significantly reduces the workshop equipment footprint and facilitates the orderly layout of the production line.

[0016] 4. This fume-collecting alloy steel pipe butt welding device uses folded guide plates inside the side fume hood to regulate the direction of internal fume flow, reduce airflow turbulence and suction loss, and increase the suction negative pressure of the purifier. This allows the fumes generated during welding to be quickly adsorbed and collected, reducing welding fume pollution in the workshop from the source and improving the working environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the welding device of the present invention.

[0018] Figure 2 This is a schematic diagram of the fixed base structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the welding device and movable welding frame combination of the present invention.

[0020] Figure 4 This is an exploded view of the welding apparatus and movable welding frame of the present invention.

[0021] Figure 5 This is a schematic diagram of the movable welding frame structure of the present invention.

[0022] Figure 6 This is a schematic diagram of the welding device structure of the present invention.

[0023] Figure 7 This is a side view of the welding apparatus of the present invention.

[0024] Figure 8 This is a schematic diagram of the side smoke collection assembly structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the distribution structure of the guide plate of the present invention.

[0026] In the diagram: 1. Fixed base; 2. Movable welding frame; 3. Welding assembly; 11. Fixed body; 12. Pipe rotation clamp; 13. Movable screw; 14. Sliding rail; 21. Movable seat; 22. Fixed frame; 23. Welding fume purifier; 24. Welding robot; 25. Guide frame; 26. Support plate; 31. Lifting frame; 32. Top fume hood; 33. Telescopic fume pipe; 34. Support frame; 35. Movable frame; 36. Push cylinder; 37. Side fume collection assembly; 38. Connecting rod; 39. Auxiliary hose; 310. Lifting drive component; 371. Auxiliary fume hood; 372. Main ball bearing; 373. Spring telescopic rod; 374. Guide plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Example 1: This embodiment provides a fume-collecting alloy steel pipe butt welding device with the following technical features.

[0030] Please see Figures 1-7It includes a fixed base 1, a movable welding frame 2, and a welding assembly 3, wherein, for example... Figure 5 As shown, the structure of the mobile welding frame 2 includes a mobile seat 21 that is slidably mounted on the top of the fixed base 1. A fixed frame 22 is fixedly connected to the top of the mobile seat 21. A welding fume purifier 23 is fixedly connected to the top of the fixed frame 22. A welding robot 24 is fixedly connected to one side of the welding fume purifier 23. The welding of alloy steel pipes is achieved through the welding robot 24.

[0031] like Figure 2 As shown, the fixed base 1 includes a fixed body 11. Pipe rotating clamps 12 are fixedly connected to both sides of the fixed body 11. The pipe rotating clamps 12 can clamp the alloy steel pipe. Simultaneously, a motor (not shown in the figure) is installed inside to drive the alloy steel pipe to rotate. (The working principle is to control the two support rollers at the bottom of the alloy steel pipe to rotate in the same direction, and to control the rotation of the alloy steel pipe using friction. This technology is existing technology and will not be elaborated upon here.) A drive motor is installed at one end of the fixed body 11. A moving screw 13 is fixedly connected to the output end of the drive motor. The moving screw 13 is rotatably installed on the side of the fixed body 11. Sliding rails 14 are fixedly connected to both sides of the top of the fixed body 11. A moving seat 21 is slidably installed on the outer surface of the sliding rail 14, and one end of the moving seat 21 is threaded onto the outer surface of the moving screw 13. This controls the moving welding frame 2 to slide on the top of the fixed base 1. Depending on the location where the steel pipe needs to be welded, the frame moves to that location and performs the welding work.

[0032] The top of the fixed frame 22 is fixedly connected to both sides of the guide frame 25, and both sides of the guide frame 25 are limit posts. The middle of the guide frame 25 is fixedly connected to the support plate 26. The top of the support plate 26 is provided with a lifting drive component 310. The output end of the lifting drive component 310 is fixedly connected to the lifting frame 31. Both sides of the lifting frame 31 are provided with sliding blocks, and the sliding blocks are slidably installed on the outer surface of the limit posts to ensure that the lifting frame 31 can rise and fall stably.

[0033] like Figure 6 As shown, the welding assembly 3 includes a lifting frame 31, a top fume hood 32 is fixedly connected to the top of the lifting frame 31, the top fume hood 32 has folding structures on both sides, and a side fume collection assembly 37 is provided at one end of the folding structure. A telescopic fume pipe 33 is fixedly connected to the top of the top fume hood 32, and the telescopic fume pipe 33 is connected to the welding fume purifier 23, and the fume is collected comprehensively through the top fume hood 32 and the side fume collection assemblies 37 on both sides.

[0034] In this embodiment, by setting up the welding assembly 3, the top fume hood 32 is located at the top of the welding point, and the side fume collection assemblies 37 at both ends are located on both sides of the welding point, so as to realize timely collection of fumes and dust at the welding point. The integrated structure has a small footprint and high collection efficiency.

[0035] In practical use, considering the size and diameter of the alloy steel pipe, and in order to further adapt to alloy steel pipes of different diameters and improve the dust collection effect, the present invention also provides a folding structure.

[0036] Example 2: This embodiment provides a fume-collecting alloy steel pipe butt welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] like Figures 6-7 As shown, the folding structure includes support frames 34 fixedly installed on both sides of the bottom of the lifting frame 31. A movable frame 35 is slidably installed inside the support frame 34. A connecting rod 38 is rotatably installed on the side of the movable frame 35. The connecting rod 38 is rotatably installed on one end of the top of the side smoke collection assembly 37. Push cylinders 36 are provided on both sides of the lifting frame 31. The output end of the push cylinder 36 is connected to the top of the movable frame 35, thereby driving the movable frame 35 to rise and fall on the upper end of the support frame 34, realizing the folding and unfolding of the side smoke collection assembly 37. The sides of the side smoke collection assembly 37 are fixedly connected to auxiliary hoses 39. One end of the auxiliary hose 39 is connected to the welding fume purifier 23. One end of the side smoke collection assembly 37 is rotatably connected to the support frame 34.

[0038] The side smoke collection assembly 37 includes an auxiliary smoke inlet hood 371. Main ball bearings 372 are rotatably installed at the bottom corners of the auxiliary smoke inlet hood 371 to reduce the friction between the auxiliary smoke inlet hood 371 and the outer surface of the alloy steel pipe, so that the alloy steel pipe rotates at the bottom of the auxiliary smoke inlet hood 371. Cavities are provided on both sides of the auxiliary smoke inlet hood 371, and multiple spring telescopic rods 373 are distributed in a fan shape inside the cavity of the auxiliary smoke inlet hood 371.

[0039] Specifically, the spring telescopic rod 373 includes a fixed sleeve and a movable rod, with a return spring installed between the fixed sleeve and the movable rod. In addition, the side smoke collection components 37 on both sides are arc-shaped. When collecting smoke and dust on both sides of the weld joint through the side smoke collection components 37, the cylinder 36 is pushed to control the movable frame 35 to descend inside the support frame 34, causing the connecting rod 38 to push the side smoke collection components 37 to rotate at the bottom of the support frame 34. The side smoke collection components 37 are close to both sides of the alloy pipe. At this time, the spring telescopic rod 373 will automatically deform according to the shape of the steel pipe, so that multiple spring telescopic rods 373 automatically extend and retract into the shape of the alloy steel pipe. Thus, the side smoke collection components 37 can be adapted to alloy steel pipes of different shapes. At the same time, the circumferential synchronous smoke collection that fits the outer wall of the steel pipe improves the smoke collection effect.

[0040] To further improve the collection effect of smoke and dust.

[0041] Example 3: This embodiment provides a fume-collecting alloy steel pipe butt welding device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] like Figures 8-9 As shown, the air guide assembly includes multiple spring telescopic rods 373, each with an auxiliary ball bearing at its bottom, and a guide plate 374 fixedly connected to the side of each spring telescopic rod 373. The guide plate 374 is movably installed inside the cavity of the auxiliary smoke inlet hood 371.

[0043] Among them, the main ball bearing 372 at the bottom of the auxiliary smoke inlet hood 371 and the ball bearing at the bottom of the spring telescopic rod 373 ensure that the auxiliary smoke inlet hood 371 fits the alloy steel pipe while the alloy steel pipe rotates stably inside the pipe rotating clamp 12.

[0044] Meanwhile, multiple deflectors 374 are arranged in a folded manner to ensure stable airflow.

[0045] While increasing the suction power of the auxiliary fume hood 371, it also prevents smoke and dust from scattering and escaping, further improving the device's suction effect on smoke and dust.

[0046] Working principle: In summary, this fume-collecting alloy steel pipe butt welding device, in the initial stage of operation, first places the alloy steel pipe to be processed inside the fixed base 1. The pipe rotation clamps 12 on both sides of the fixed body 11 position and hold the alloy steel pipe, ensuring that it does not shift or shake during welding and guaranteeing welding accuracy. Simultaneously, a drive motor (not shown) is built into the fixed body 11, which controls the synchronous and unidirectional rotation of two sets of support rollers at the bottom of the alloy steel pipe. Relying on the friction between the support rollers and the outer wall of the steel pipe, the alloy steel pipe rotates at a uniform speed, providing the basic power for omnidirectional circumferential welding.

[0047] After the steel pipe is positioned, the drive motor at one end of the fixed body 11 is started. The drive motor drives the moving screw 13 to rotate. Driven by the rotation of the moving screw 13, the moving seat 21 slides horizontally along the sliding track 14, thereby driving the entire moving welding frame 2 to move precisely on the top of the fixed base 1. The operator can control the start and stop of the drive motor according to the preset welding points of the alloy steel pipe to move the moving welding frame 2 precisely to the target welding position.

[0048] Simultaneously with the welding operation, the welding fume purifier 23 is activated to collect the fumes. The lifting drive 310 controls the lifting frame 31 to descend, so that the support frame 34 is located on the outer surface of the alloy steel pipe. Subsequently, the push cylinders 36 at both ends of the lifting frame 31 are activated, driving the movable frame 35 to rise and fall vertically inside the support frame 34. The movable frame 35 drives the side fume collection assembly 37 to rotate around the bottom of the support frame 34 through the connecting rod 38, realizing the unfolding action of the side fume collection assembly 37. During the operation of the side fume collection assembly 37 adhering to the steel pipe, the spring telescopic rods 373 distributed in a fan shape inside the auxiliary fume hood 371 can automatically deform to adapt to the shape of the steel pipe, forming an embracing fume collection structure. Furthermore, the auxiliary hose 39 connected to the side of the side fume collection component 37 is connected to the welding fume purifier 23, which can simultaneously transport and collect the fumes collected on both sides. At the same time, the guide plates 374 on the side of the spring telescopic rod 373 are folded and evenly distributed, which can stably guide the direction of the fume airflow, ensure smooth collection of the fume airflow, effectively improve the internal suction force, and maximize the overall collection effect of welding fumes.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fume-collecting alloy steel pipe butt welding device, comprising a fixed base (1), a movable welding frame (2), and a welding assembly (3), characterized in that: The mobile welding frame (2) includes a mobile seat (21) that is slidably installed on the top of the fixed base (1). A fixed frame (22) is fixedly connected to the top of the mobile seat (21). A welding fume purifier (23) is fixedly connected to the top of the fixed frame (22). A welding robot (24) is fixedly connected to one side of the welding fume purifier (23). The welding of alloy steel pipes is achieved through the welding robot (24). The welding assembly (3) includes a lifting frame (31), the top of which is fixedly connected to a top fume hood (32). The top fume hood (32) has folding structures on both sides, and a side fume collection assembly (37) is provided at one end of the folding structure. The top of the top fume hood (32) is fixedly connected to a telescopic fume pipe (33), which is connected to the welding fume purifier (23) and collects the smoke and dust comprehensively through the top fume hood (32) and the side fume collection assemblies (37) on both sides.

2. The dust collection alloy steel pipe butt welding device according to claim 1, characterized in that, The fixed base (1) includes a fixed body (11), and pipe rotating clamps (12) are fixedly connected to both sides of the fixed body (11). A drive motor is provided at one end of the fixed body (11), and a moving screw (13) is fixedly connected to the output end of the drive motor. The moving screw (13) is rotatably installed on the side of the fixed body (11). Sliding rails (14) are fixedly connected to both sides of the top of the fixed body (11). The moving seat (21) is slidably installed on the outer surface of the sliding rail (14), and one end of the moving seat (21) is threaded onto the outer surface of the moving screw (13).

3. The dust collection alloy steel pipe butt welding device according to claim 2, characterized in that, Guide frames (25) are fixedly connected to both sides of the top of the fixed frame (22). Both sides of the guide frame (25) are limiting posts. A support plate (26) is fixedly connected to the middle of the guide frame (25).

4. The dust collection alloy steel pipe butt welding device according to claim 3, characterized in that, The top of the support plate (26) is provided with a lifting drive (310). The output end of the lifting drive (310) is fixedly connected to the lifting frame (31). Both sides of the lifting frame (31) are provided with sliding blocks, and the sliding blocks are slidably installed on the outer surface of the limiting column to ensure that the lifting frame (31) can rise and fall stably.

5. The dust collection alloy steel pipe butt welding device according to claim 1, characterized in that, The folding structure includes a support frame (34) fixedly installed on both sides of the bottom of the lifting frame (31). A movable frame (35) is slidably installed inside the support frame (34). A connecting rod (38) is rotatably installed on the side of the movable frame (35). The connecting rod (38) is rotatably installed on one end of the top of the side smoke collection assembly (37). Push cylinders (36) are provided on both sides of the lifting frame (31). The output end of the push cylinder (36) is connected to the top of the movable frame (35), thereby driving the movable frame (35) to rise and fall on the upper end of the support frame (34) to realize the folding and unfolding of the side smoke collection assembly (37). The side sides of the side smoke collection assemblies (37) are fixedly connected to auxiliary hoses (39). The auxiliary hoses (39) are connected to the welding fume purifier (23). One end of the side smoke collection assembly (37) is rotatably connected to the support frame (34).

6. The dust collection alloy steel pipe butt welding device according to claim 1, characterized in that, The side smoke collection assembly (37) includes an auxiliary smoke inlet hood (371). The bottom corners of the auxiliary smoke inlet hood (371) are rotatably equipped with main ball bearings (372) to reduce the friction between the auxiliary smoke inlet hood (371) and the outer surface of the alloy steel pipe, so that the alloy steel pipe rotates at the bottom of the auxiliary smoke inlet hood (371). Both sides of the auxiliary smoke inlet hood (371) are provided with cavities, and the interior of the cavities is provided with air guide assemblies.

7. The fume-collecting alloy steel pipe butt welding device according to claim 6, characterized in that, The air guide assembly includes multiple spring telescopic rods (373), each of which has an auxiliary ball bearing at its bottom and a guide plate (374) fixedly connected to its side. The guide plate (374) is movably installed inside the cavity of the auxiliary smoke inlet hood (371).

8. The fume-collecting alloy steel pipe butt welding device according to claim 7, characterized in that, Multiple baffles (374) are arranged in a folded manner, and multiple spring telescopic rods (373) are arranged in a fan shape inside the cavity of the auxiliary smoke hood (371) to ensure stable airflow.

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