Environment-friendly automatic electric arc welder and method based on flange part machining

Abstract

The invention discloses an environment-friendly automatic electric arc welder and method based on flange part machining, and relates to the technical field of electric arc welding. The environment-friendly automatic electric arc welder comprises a power source machine with a heat dissipation function, and the output end of the power source machine is provided with a welding gun used for clamping a welding rod; the outer side of the welding gun is provided with a guide frame which limits the welding gun to clamp a welding rod to extend towards the axis of the flange at a suitable welding angle, the guide frame and the welding gun are matched to form a guide groove and a supporting rod, and the supporting rod is located in the guide groove and moves along with the welding gun. The guide groove and the supporting rod are matched to determine the extending direction of the welding rod but not limit the position of the projection point of the welding rod on the axis of the flange after the welding rod extends in the direction, the welding gun is accurately positioned and adjusted, fine control over the welding process is achieved, the requirement of welding for the skill of a welder is lowered, and the welding quality and efficiency are improved. The design of a clamping plate in the welding gun can guarantee stable clamping of the welding rod, the welding rod is conveyed according to the using state, and continuous and stable supply is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of arc welding, and specifically to an environment-friendly automatic arc welding machine and method for flange parts processing. Background Art

[0002] In traditional pipe connections, flanges often rely on gaskets and bolts to achieve sealing. However, in some harsh working conditions such as high temperature, high pressure, or medium corrosion, mechanical connections are difficult to ensure long-term stable sealing performance. Therefore, "integrating" the flange with the pipe or equipment through welding not only eliminates the leakage risk caused by gasket aging but also significantly improves the impact resistance and fatigue resistance of the overall connection. By forming an integrated structure through welding connection, it can better resist the vibration and thermal stress generated during operation, thus ensuring the long-term stable and safe operation of the system.

[0003] Publication No. CN118357555A discloses a handheld precision flange welding device, including a rotating disk, and a fixing device is fixedly installed at the upper end of the rotating disk. It also includes: a gun body, one end of the gun body is fixedly connected to an air intake pipe, and the other end of the gun body is fixedly installed with a welding head; a wire feeding mechanism, on which a welding wire is wound; a roller, a rotating shaft is arranged inside the roller, one end of the rotating shaft is rotatably connected to a connecting rod, and a plurality of dividing rods are fixedly connected to the circumferential surface of the rotating shaft. One ends of the plurality of dividing rods away from the rotating shaft are fixedly connected to the inner wall of the roller; a limiting rod, one ends of the two limiting rods respectively extend into the corresponding rollers after threading through the side wall of the gun body in a threaded manner. It can relatively easily complete the fish-scale welding, greatly reducing the skill requirements and costs of fish-scale welding, and because of the simple operation, the situation of device damage caused by operation is greatly reduced.

[0004] During the welding process, the quality of the weld directly affects the strength and sealing performance of the overall structure, and the quality of the weld is closely related to the welder's control of key parameters such as welding speed, wire feeding method, and the angle between the electrode and the weld. When the weld of the flange is wide, the methods of swing welding and segmented wire feeding are usually adopted, further increasing the welding difficulty.

[0005] As in the above patent, by supporting the welding gun, the welding difficulty is reduced. However, when the welding gun is supported, the positions of the welding gun and the two support points are fixed. After the welding gun swings, the distance between the electrode and the weld will change, and during the welding process, the welding gun needs to move circumferentially around the flange axis at a fixed angle. Therefore, the frictional force generated by the contact between the support point and the flange will also cause resistance to the movement of the welding gun.

[0006] Therefore, this application proposes an environment-friendly automatic arc welding machine and method, which avoid interfering with the change in the distance between the electrode and the weld caused by the movement of the welding gun while supporting the welding gun. Summary of the invention

[0007] One of the purposes of the present invention is to provide an environmentally friendly automatic arc welding machine and method based on flange component processing, which utilizes support for a welding gun to reduce the difficulty of welding, ensure stable weld quality during the welding process, and reduce interference with the movement of the welding gun.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an environmentally friendly automatic arc welding machine based on flange component processing, comprising a power supply with a heat dissipation function, the power supply is configured with a control system for adjusting welding parameters and displaying the parameters through a display panel; The output end of the power supply is equipped with a welding gun for holding a welding rod; The outer side of the welding gun is provided with a guide frame which limits the clamped welding rod to extend toward the flange axis at a suitable welding angle. The guide frame and the welding gun are adapted to form a guide groove and a support rod. The support rod is located in the guide groove and moves with the welding gun. The guide groove and the support rod cooperate to determine the extension direction of the welding rod but do not limit the position of the projection point on the flange axis after the welding rod extends in this direction. The guide frame plays the role of supporting the welding gun and limiting its position in the support unit. A positioning piece inserted into the flange mounting hole is arranged on the outside of the support unit. The positioning piece and the support unit work together to limit the movement path and angle of the welding gun.

[0009] In one or more embodiments of the present invention, the guide frame is open and the welding gun can be detached from the guide frame for independent use. The guide frame is swingably arranged, and one end of the guide frame away from the guide groove is provided with a rotating shaft and swings circumferentially around its axis. A limiter is arranged on the outside of the rotating shaft and inserted into the inside of the limiter, and the limiter limits the swing angle of the guide frame to determine the welding path of the welding rod.

[0010] In one or more embodiments of the present invention, the stopper comprises: The housing is sleeved on the outside of the rotating shaft, and the housing has symmetrically arranged limit blocks inside. The limit blocks are arranged in an arc shape on one side close to the rotating shaft, and the swing angles of the limit blocks on both sides change the swingable range of the rotating shaft; A chuck is rotatably mounted on the outer side of the shell and extends into the shell. One end of the chuck extending into the shell is provided with a plurality of slots for engaging the limit block. The chuck is rotated to change the slot engaged with the limit block, and the rotating shaft rotates along an eccentric axis. The elastic member is located on one side of the limiting block to push it to be stably engaged with the card slot.

[0011] In one or more embodiments of the present invention, the guide frame is of closed design, the support rod is restricted inside the guide groove, the welding gun connected to the support rod slides in the guide groove, and a limit head is arranged inside the guide groove, which limits the sliding range of the support rod; Wherein, when the support rod is at any position inside the guide groove, the electrode inside the welding torch faces the flange axis at a fixed angle.

[0012] In one or more embodiments of the present invention, a limiting groove is provided inside the guide groove to connect with the limiting head, and the limiting head includes: A fixed part and a movable part. The fixed part extends into the limiting groove and is connected to the limiting groove. In this state, the limiting head cannot move relative to the guide groove. The movable part is connected to the fixed part and controls the expansion and contraction of the fixed part; A magnetic plate is disposed at one end of the fixed part, and the magnetic plate produces magnetic cooperation with the support rod.

[0013] In one or more embodiments of the present invention, the fixed part includes: A frame body is disposed in the guide groove and contacts the inner wall of the guide groove. The movable part extends into the frame body. Meshing blocks are provided on the inner side of the frame body. The meshing blocks expand and contract inside the frame body, and a meshing strip made of a buffer material is disposed inside the limiting groove. The meshing blocks extend out and mesh with the meshing strip; A support spring is located at the back end of the meshing block and supports the meshing block; The movable part contacts the meshing block, and pressing the movable part inward contracts the meshing block.

[0014] In one or more embodiments of the present invention, the positioning member includes: A positioning head is stepped. One end of the positioning head extends into the flange mounting hole. A meshing groove is disposed at the end of the positioning head located outside the flange. The support unit cooperates with the meshing groove; A mounting head is threadedly mounted on one end of the positioning head extending into the flange mounting hole. A centering member is provided between the mounting head and the positioning head to support the mounting head and the mounting hole coaxially.

[0015] In one or more embodiments of the present invention, the support unit includes: A connecting part is connected to the guiding frame. Adjusting parts are provided on both sides of the connecting part. The adjusting parts are hinged to the connecting part. Clamping pieces are disposed on both sides of the connecting part. The clamping pieces contact and support the adjusting parts; A chuck is disposed between the connecting part and the adjusting part. The chuck extends into the connecting part and the adjusting part. A fastening screw is disposed inside the chuck. A clamping plate is disposed outside the fastening screw. Rotating the fastening screw changes the position of the clamping plate. The clamping plate cooperates with the chuck to clamp the connecting part and the adjusting part and fix the position of the chuck.

[0016] In one or more embodiments of the present invention, a clamping plate is provided inside the welding torch. The clamping plate clamps one end of the electrode located inside the welding torch. A driving member is provided inside the welding torch. The driving end of the driving member is connected to the clamping plate and pushes the clamping plate to move outward.

[0017] The present application also provides a welding method for flange components, which is used for the above-mentioned environment-friendly automatic arc welding machine and includes the following steps: After installing the welding rod on the clamping plate of the welding torch, adjust the welding parameters through the control system; Insert the positioning member into the installation hole, and install the support unit outside the positioning member; The welder controls the left and right movement of the welding torch for swing welding, and the welding torch moves inside the guide groove; During the welding process, the welder can precisely adjust the welding current and voltage through the control system to meet the welding requirements of different materials and thicknesses.

[0018] Through the above technical solutions, the present invention has the following beneficial effects: 1. Through precise positioning and adjustment of the welding torch, the present application realizes fine control of the welding process, reduces the requirements for welder skills, improves the welding quality and efficiency. The design of the clamping plate inside the welding torch can ensure stable clamping of the welding rod and convey the welding rod according to the usage state to achieve continuous and stable supply.

[0019] 2. By using the guide frame to limit the angle of the welding torch, during the welding process, the welding torch is stably supported, ensuring the stability and consistency of the welding angle, thereby improving the stability and repeatability of the welding operation, reducing the requirements for welder skills, and making the welding quality more uniform.

[0020] 3. By restricting the left and right movement range of the welding torch, the accuracy of the welding process is ensured, and by precisely controlling the swing range of the welding torch, the stability and repeatability of the welding process are ensured, making the weld quality more uniform. In addition, this technical solution simplifies the operation process, enabling the welder to quickly master the welding skills and further improving the work efficiency.

[0021] 4. Through the coordinated setting of the positioning member and the support unit, the circular movement range of the welding torch can be adjusted, that is, it can be adaptively adjusted according to the size of the flange, making the movement path of the welding torch more accurate, ensuring complete coverage of the welding part, and effectively avoiding omission or overlapping areas during the welding process.

[0022] Other features and advantages of the present invention will be described in the subsequent description, and some of them will become obvious from the description or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view of the present invention; Figure 2 is a schematic structural diagram of the welding torch and the support unit of the present invention; Figure 3 Schematic diagram of the support unit structure of the present invention; Figure 4 Schematic diagram of the positioning member structure of the present invention; Figure 5 Schematic diagram of the structure of the welding torch of the present invention Figure 1 ; Figure 6 Schematic diagram of the welding electrode structure of the present invention; Figure 7 Schematic diagram of the guide frame structure of the present invention; Figure 8 Schematic diagram of the support rod structure of the present invention; Figure 9 Schematic diagram of the guide groove structure of the present invention; Figure 10 Schematic diagram of the internal structure of the limiter of the present invention; Figure 11 Schematic diagram of the limiting block structure of the present invention; Figure 12 Side view of the limiting block structure of the present invention; Figure 13 Schematic diagram of the limiting head structure of the present invention; Figure 14 Schematic diagram of the engaging bar structure of the present invention; Figure 15 Schematic diagram of the internal structure of the limiting head of the present invention; Figure 16 Schematic diagram of the movable part structure of the present invention; Figure 17 Schematic diagram of the connection part and adjustment part structure of the present invention; Figure 18 Exploded view of the positioning member of the present invention; Figure 19 Partial schematic diagram of the support unit of the present invention; Figure 20 Schematic diagram of the chuck connection structure of the present invention; Figure 21 Schematic diagram of the internal structure of the chuck of the present invention.

[0024] In the figure: 1 power machine, 2 welding torch, 3 support unit, 4 positioning member; 31 guide frame, 32 connection part, 33 adjustment part, 34 clip, 35 chuck, 36 fastening screw, 37 clamping plate; 311 guide groove, 312 support rod; 11a rotating shaft, 12a limiter, 13a housing, 14a limiting block, 15a chuck, 16a clamping groove, 17a elastic member; 11b limiting groove, 12b limiting head, 13b fixing part, 14b movable part, 15b magnetic plate, 16b magnet, 17b frame body, 18b engaging block, 19b engaging strip, 110b support spring; 41 positioning head, 42 engaging groove, 43 mounting head, 44 centering part. Detailed implementation manner

[0025] The following will disclose multiple implementation manners of the present invention with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some implementation manners of the present invention, these practical details are not necessary. And if possible in implementation, the features of different embodiments can be applied interactively.

[0026] Unless otherwise defined, all terms (including technical and scientific terms) used herein have their usual meanings, and their meanings can be understood by those familiar with this field. Further, the definitions of the above terms in commonly used dictionaries should be interpreted as having the same meaning as the relevant fields of the present invention in the content of this specification. Unless specifically defined, these terms will not be interpreted as idealized or overly formal meanings.

[0027] The following explains the relationships and terms used in this application: Parallel: The parallel defined in this application is not limited to absolute parallel. The definition of this parallel can be understood as substantially parallel, allowing for non-absolute parallel situations brought about by factors such as assembly tolerances, design tolerances, and the influence of structural flatness. Small-angle range errors are allowed. For example, within the assembly error range of less than 10 degrees, it can be understood as a parallel relationship.

[0028] Vertical: The vertical defined in this application is not limited to the relationship of absolute vertical intersection (the included angle is 90 degrees). It allows for non-absolute vertical intersection relationships brought about by factors such as assembly tolerances, design tolerances, and the influence of structural flatness. Small-angle range errors are allowed. For example, within the assembly error range of 80 degrees to 100 degrees, it can be understood as a vertical relationship.

[0029] The above explanations do not fully cover the relationship definitions given in this application, but only represent a part of this application.

[0030] The present invention provides an environment-friendly automatic arc welder for flange parts processing, which is used for flange welding. Compared with small welds, the quality of this application is more stable when welding large welds, and correspondingly, the skill requirements for welders are also reduced.

[0031] Refer to Figures 1 - 5As shown, the automatic arc welding machine includes a power supply 1 with a heat dissipation function, and the power supply 1 is configured with a control system for adjusting welding parameters and displaying the parameters through a display panel; The output end of the power supply 1 is provided with a welding gun 2 for holding a welding rod; The outer side of the welding gun 2 is provided with a guide frame 31 for limiting the welding rod to extend toward the flange axis at a suitable welding angle. The guide frame 31 and the welding gun 2 are adapted to form a guide groove 311 and a support rod 312. The support rod 312 is located in the guide groove 311 and moves with the welding gun 2. The guide groove 311 and the support rod 312 cooperate to determine the extension direction of the welding rod but do not limit the position of the projection point of the welding rod on the flange axis after the welding rod extends in this direction. The guide frame 31 plays the role of receiving the welding gun 2 and limiting its position in the support unit 3. A positioning member 4 inserted into the flange mounting hole is arranged on the outside of the support unit 3. The positioning member 4 and the support unit 3 work together to limit the movement path and angle of the welding gun 2.

[0032] In one feasible method, the quality of the weld between the flange and the shaft is closely related to the welding speed, the rod feeding method, and the angle between the electrode and the weld. Since the welding parameters can be achieved through the control system and are fixed factors, and the welding speed, the rod feeding method, and the angle between the electrode and the weld are all human factors, after stabilizing the human factors, the overall quality of the welding can be improved and the requirements for the welder's skills for flange welding can be reduced.

[0033] Among them, by positioning the welding gun 2 with the guide frame 31, it is possible to ensure that the welding rod is always kept at the optimal angle during the welding process, thereby reducing welding defects caused by angle deviation and further improving the uniformity and strength of the weld. At the same time, the design of the guide frame 31 makes the welder more convenient to operate, reduces the difficulty of operation, and improves work efficiency.

[0034] By precisely controlling welding parameters and welding gun 2 angles, human errors are effectively reduced, ensuring stable weld quality. Even in complex environments, efficient welding can be maintained, significantly improving production efficiency, reducing dependence on highly skilled welders, and saving costs for the company.

[0035] See also Figures 7 - 10 As shown, in one embodiment, the guide frame 31 is open, and the welding gun 2 can be separated from the guide frame 31 and used alone. The guide frame 31 is swingable, and the end of the guide frame 31 away from the guide groove 311 is provided with a rotating shaft 11a and swings circumferentially around its axis. A limiter 12a is configured on the outside of the rotating shaft 11a and inserted into the inside of the limiter 12a. The limiter 12a limits the swing angle of the guide frame 31 to determine the welding path of the welding rod.

[0036] In an implementable manner, the guiding frame 31 is arranged in an open manner, providing greater freedom for the welder during the welding process. Under this condition, the guiding frame 31 supports the welding torch 2 more flexibly, ensuring both the accuracy of welding and allowing the welder to finely adjust the position of the welding torch 2 according to the actual situation, further optimizing the welding effect and ensuring the double improvement of the weld quality and work efficiency.

[0037] Among them, the guiding frame 31 does not interfere with the normal use of the welding head. Instead, through delicate design, it provides stable support when needed and flexibly avoids when not needed, ensuring the smooth operation of the welder and the consistency of the weld, thus taking into account the convenience and high efficiency of operation while improving the welding quality.

[0038] Refer to Figures 10 - 12 As shown, in an embodiment, the stopper 12a includes: A housing 13a, sleeved outside the rotating shaft 11a. Inside the housing 13a, limiting blocks 14a are symmetrically arranged. One side of the limiting block 14a close to the rotating shaft 11a is arc-shaped, and the swinging angles of the two limiting blocks 14a change the swing range of the rotating shaft 11a; A chuck 15a, rotatably installed outside the housing 13a and extending into the housing 13a. At one end of the chuck 15a extending into the housing 13a, a plurality of card slots 16a for clamping the limiting blocks 14a are provided. When the chuck 15a rotates, the card slots 16a engaged with the limiting blocks 14a change, and the rotating shaft 11a rotates with an eccentric axis; An elastic member 17a, located on one side of the limiting block 14a to push it to stably engage with the card slot 16a.

[0039] In an implementable manner, the stopper 12a is used to limit the swing angle of the rotating shaft 11a corresponding to the welding areas of different welds. After adjusting the limiting blocks 14a inside the stopper 12a, the different swing ranges of the rotating shaft 11a are correspondingly adjusted.

[0040] The rotating shaft 11a is of a two-piece design and the axes do not coincide. The rotating shaft 11a rotates around one axis as the center of rotation, and the other part moves eccentrically and contacts the limiting block 14a. When the rotating shaft 11a rotates, it gradually presses the limiting block 14a. One side of the limiting block 14a in contact with the rotating shaft 11a is arc-shaped and can be made of an elastic material. Therefore, during the swinging process of the rotating shaft 11a, it can not only achieve precise positioning but also provide a certain buffer, effectively avoiding mechanical damage caused by rigid collision and extending the service life of the equipment.

[0041] Optionally, the support member is a spring, located inside the housing 13a and supporting the limiting block 14a.

[0042] Another option is that the support member is a spring sheet, and the spring sheet supports the limiting block 14a.

[0043] In another embodiment, a positioning frame is provided on the outer side of the limit block 14a, the elastic member 17a is arranged to support the positioning frame on one side of the positioning frame, the card slot 16a meshes with the positioning frame, and the chuck 15a rotates to change the card slot 16a meshing with the positioning frame, so that the positioning frame changes to different positions, and the positioning frame squeezes the limit block 14a, causing the limit frame to shrink to different degrees.

[0044] In another embodiment, the number of chucks 15a is the same as the number of limit blocks 14a, and each controls a limit block 14a respectively, so as to be able to adjust the range of the swing of the rotating shaft 11a to both sides, realize more refined angle control, ensure the stability and flexibility of the welding torch 2 during the welding process, and further improve the welding quality and efficiency.

[0045] Refer to Figures 13 - 16 As shown, in one embodiment, the guide frame 31 is of a closed design, the support rod 312 is restricted inside the guide groove 311, and the welding torch 2 connected to the support rod 312 slides in the guide groove 311. A limit head 12b is arranged inside the guide groove 311, and the limit head 12b restricts the sliding range of the support rod 312; Wherein, when the support rod 312 is at any position inside the guide groove 311, the welding rod inside the welding torch 2 faces the flange axis at a fixed angle.

[0046] In an implementable manner, the guide frame 31 adjusts the slidable position of the welding torch 2 by adjusting the position of the limit head 12b. Due to the closed design of the guide frame 31, the welding torch 2 has better stability. The welder only needs to control the sliding distance of the welding torch 2 and does not need to additionally control the stability of the welding torch 2. Therefore, compared with the open design of the guide frame 31, the closed design has lower requirements for the welder's skills. However, compared with the open guide frame 31, the slidable range of the welding torch 2 is limited to a certain extent, which is suitable for welding tasks with higher precision requirements to ensure that the weld is uniform and without deviation.

[0047] Refer to Figures 13 - 16 As shown, in one embodiment, a limit groove 11b is opened inside the guide groove 311 to connect with the limit head 12b. The limit head 12b includes: A fixed part 13b and a movable part 14b. The fixed part 13b extends into the limit groove 11b and is connected to the limit groove 11b. In this state, the limit head 12b cannot move relative to the guide groove 311. The movable part 14b is connected to the fixed part 13b and controls the expansion and contraction of the fixed part 13b; A magnetic plate 15b is arranged at one end of the fixed part 13b, and the magnetic plate 15b generates magnetic force cooperation with the support rod 312.

[0048] Among them, a magnet 16b is embedded inside the support rod 312, and the magnet 16b cooperates with the magnetic plate 15b to generate a repulsive force. When the support rod 312 approaches the limit head 12b, the repulsive force increases, effectively preventing the support rod 312 from colliding with the limit head 12b with a large force, thereby further protecting the limit head 12b and the support rod 312, reducing wear and tear, and extending the service life of the equipment.

[0049] In one feasible method, the magnetic plate 15b is made of a highly magnetic material to ensure that the magnetic force is stable and lasting. The cooperation between the magnetic plate 15b and the magnet 16b can effectively buffer the impact force of the support rod 312. When the welder moves the welding gun 2 left and right, he feels obvious magnetic feedback, avoiding excessive force, thereby increasing the accuracy and safety of the welding operation and improving the welding quality.

[0050] See also Figures 13 - 16 As shown, in one embodiment, the fixing portion 13b includes: The frame 17b is disposed in the guide groove 311 and contacts the inner wall of the guide groove 311. The movable portion 14b extends into the frame 17b. An engagement block 18b is disposed inside the frame 17b. The engagement block 18b is retracted inside the frame 17b. An engagement strip 19b made of a buffer material is disposed inside the limiting groove 11b. The engagement block 18b extends out to engage with the engagement strip 19b. A support spring 110b, located at the back end of the engagement block 18b and supporting the engagement block 18b; The movable portion 14b contacts the engagement block 18b, and the movable portion 14b is pressed inward to contract the engagement block 18b.

[0051] In one feasible method, the engaging block 18b and the engaging strip 19b are both made of wear-resistant material to ensure that they will not deform during long-term use. In the present application, the engaging strip 19b is made of rubber material, which has excellent elasticity and wear resistance, and increases the friction with the engaging block 18b, effectively preventing loosening during sliding, and ensuring the stability of the position of the welding gun 2 during welding. Since it only needs to play a limiting role on the welding gun 2, the welding gun 2 will not produce a large impact when moving to both ends.

[0052] In this embodiment, the movable portion 14b is an insertion rod. The movable portion 14b can slide and change position after being pressed, and the end of the engagement strip 19b away from the engagement block 18b is glued to the inner wall of the guide groove 311 to ensure the stability of the engagement strip 19b.

[0053] See also Figure 18 As shown, in one embodiment, the positioning member 4 includes: The positioning head 41 is arranged in a stepped manner, one end of the positioning head 41 extends into the inside of the flange mounting hole, and an engagement groove 42 is arranged at one end of the positioning head 41 located outside the flange, and the support unit 3 cooperates with the engagement groove 42; The mounting head 43 is threadedly mounted on one end of the positioning head 41 extending into the flange mounting hole. A centering member 44 is provided between the mounting head 43 and the positioning head 41 to support the mounting head 43 to be coaxial with the mounting hole.

[0054] Optionally, the centering member 44 is a spring piece, which is arc-shaped. Both ends of the spring piece respectively contact the mounting head 43 and the positioning head 41. During the process of screwing the mounting head 43 tightly, the spring piece generates elastic deformation to ensure that the mounting head 43 and the positioning head 41 always remain coaxial. Wherein, contact rings are arranged on both sides of the spring piece, and the contact rings are in close fit with the mounting head 43 and the positioning head 41 to enhance the friction force and prevent loosening.

[0055] The design of the spring piece not only improves the stability of installation, but also simplifies the assembly process and reduces the maintenance frequency. The positioning head 41 is inserted into the mounting hole, thereby changing the ring diameter formed by the positioning head 41 to adapt to different sizes of flanges.

[0056] Refer to Figure 17 and Figures 19 - 21 As shown, in one embodiment, the support unit 3 includes: A connecting portion 32, which is connected to the guiding frame 31. Adjusting portions 33 are provided on both sides of the connecting portion 32. The adjusting portions 33 are hinged to the connecting portion 32. Clamping pieces 34 are arranged on both sides of the connecting portion 32, and the clamping pieces 34 contact and support the adjusting portions 33; A chuck 35 is arranged between the connecting portion 32 and the adjusting portion 33. The chuck 35 extends into the connecting portion 32 and the adjusting portion 33. A fastening screw 36 is arranged inside the chuck 35, and a clamping plate 37 is arranged outside the fastening screw 36. Rotating the fastening screw 36 changes the position of the clamping plate 37, and the clamping plate 37 cooperates with the chuck 35 to clamp the connecting portion 32 and the adjusting portion 33 and fix the position of the chuck 35.

[0057] In an implementable manner, both the connecting portion 32 and the adjusting portion 33 are engaged with the engaging groove 42, so as to limit the position of the support unit 3 by using the positioning member 4. The adjusting portion 33 and the connecting portion 32 can simultaneously contact a plurality of positioning heads 41, and a plurality of positioning heads 41 are used to ensure the circular motion of the support unit 3.

[0058] Wherein, when the adjusting portion 33 swings, the clamping head supports the adjusting portion 33 to make the position of the adjusting portion 33 stable, and the clamping piece 34 can support the adjusting portion 33 to enable the adjusting portion 33 to stably contact the engaging groove 42. This design ensures the precise position of the adjusting portion 33 during the welding process, thereby maintaining the stability of the welding torch 2 and the welding precision.

[0059] Refer to Figure 6As shown, in one embodiment, a clamping plate is provided inside the welding torch 2. The clamping plate clamps one end of the welding electrode located inside the welding torch 2. A driving member is provided inside the welding torch 2, and the driving end of the driving member is connected to the clamping plate and pushes the clamping plate to move outwards.

[0060] In an implementable manner, in order to further improve the movement stability of the welding electrode, a pressure detection sensor is provided at the driving end of the driving member, which is used to detect the change in the force when the driving member drives the welding electrode to contact the welding position, and adjust the driving of the driving member on the welding electrode according to the change in the force.

[0061] Optionally, the driving member is a micro slide table. The micro slide table moves the clamping plate 37 through a precision guide rail, ensuring precise position and speed control of the welding electrode during the welding process.

[0062] Another option is that the driving member is a telescopic guide rod, and the telescopic guide rod controls the position of the clamping plate 37 through expansion and contraction.

[0063] This application also provides a welding method for flange parts, which is used for the above-mentioned environment-friendly automatic arc welding machine, and includes the following steps: After installing the welding electrode on the clamping plate 37 of the welding torch 2, adjust the welding parameters through the control system; The positioning member 4 is inserted into the installation hole, and the support unit 3 is installed outside the positioning member 4; The welder controls the left and right movement of the welding torch 2 for swing welding, and the welding torch 2 moves inside the guide groove 311; During the welding process, the welder can precisely adjust the welding current and voltage through the control system to meet the welding requirements of different materials and thicknesses.

[0064] To sum up, the technical solutions disclosed in the above embodiments of the present invention have at least the following advantages: 1. Through precise positioning and adjustment of the welding torch, this application realizes fine control of the welding process, reduces the requirements for the welder's skills, improves the welding quality and efficiency. The design of the clamping plate inside the welding torch can ensure stable clamping of the welding electrode and convey the welding electrode according to the usage state to achieve continuous and stable supply.

[0065] 2. By using the guide frame to limit the angle of the welding torch, during the welding process, the welding torch is stably supported, ensuring the stability and consistency of the welding angle, thereby improving the stability and repeatability of the welding operation, reducing the requirements for the welder's skills, and making the welding quality more uniform.

[0066] 3. By restricting the left - right movement range of the welding torch, the accuracy of the welding process is ensured. And by precisely controlling the swing range of the welding torch, the stability and repeatability of the welding process are ensured, making the weld quality more uniform. In addition, this technical solution simplifies the operation process, enabling welders to quickly master welding skills and further improving work efficiency.

[0067] 4. Through the collaborative setting of the positioning member and the support unit, the circular movement range of the welding torch can be adjusted, that is, it can be adaptively adjusted according to the size of the flange, making the movement path of the welding torch more accurate, ensuring complete coverage of the welding part, and effectively avoiding omission or overlapping areas during the welding process.

[0068] Although the present invention is disclosed in combination with the above - mentioned embodiments, it is not intended to limit the present invention. Any person familiar with this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. An environmentally friendly automatic arc welding machine based on flange parts processing, comprising a power supply with a heat dissipation function, the power supply is equipped with a control system for adjusting welding parameters and displaying the parameters through a display panel; characterized in that, The output end of the power supply is equipped with a welding gun for holding a welding rod; The outer side of the welding gun is provided with a guide frame which limits the clamped welding rod to extend toward the flange axis at a suitable welding angle. The guide frame and the welding gun are adapted to form a guide groove and a support rod. The support rod is located in the guide groove and moves with the welding gun. The guide groove and the support rod cooperate to determine the extension direction of the welding rod but do not limit the position of the projection point on the flange axis after the welding rod extends in this direction. The guide frame plays the role of supporting the welding gun and limiting its position in the support unit. A positioning piece inserted into the flange mounting hole is arranged on the outside of the support unit. The positioning piece and the support unit work together to limit the movement path and angle of the welding gun.

2. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 1 is characterized in that: The guide frame is open and the welding gun can be detached from the guide frame for independent use. The guide frame is swingable and one end of the guide frame away from the guide groove is provided with a rotating shaft and swings circumferentially around its axis. A limiter is arranged outside the rotating shaft and inserted into the limiter. The limiter limits the swing angle of the guide frame to determine the welding path of the electrode.

3. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 2 is characterized in that: The limiter includes: The housing is sleeved on the outside of the rotating shaft, and the housing has symmetrically arranged limit blocks inside. The limit blocks are arranged in an arc shape on one side close to the rotating shaft, and the swing angles of the limit blocks on both sides change the swingable range of the rotating shaft; A chuck is rotatably mounted on the outer side of the shell and extends into the shell. One end of the chuck extending into the shell is provided with a plurality of slots for engaging the limit block. The chuck is rotated to change the slot engaged with the limit block, and the rotating shaft rotates along an eccentric axis. The elastic member is located on one side of the limiting block to push it to be stably engaged with the card slot.

4. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 1 is characterized in that: The guide frame is of closed design, the support rod is restricted inside the guide groove, the welding gun connected to the support rod slides in the guide groove, and a limit head is arranged inside the guide groove to limit the sliding range of the support rod; When the support rod is located at any position inside the guide groove, the welding rod inside the welding gun is oriented toward the flange axis at a fixed angle.

5. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 4 is characterized in that: A limit groove is provided inside the guide groove to connect with the limit head, and the limit head includes: A fixed part and a movable part, wherein the fixed part extends into the limiting groove and is connected to the limiting groove. In this state, the limiting head cannot move relative to the guide groove. The movable part is connected to the fixed part and controls the extension and retraction of the fixed part. The magnetic plate is arranged at one end of the fixing part, and the magnetic plate and the supporting rod generate magnetic force cooperation.

6. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 5 is characterized in that the fixing part include: A frame body is arranged in the guide groove and contacts with the inner wall of the guide groove, the movable part extends into the frame body, an engaging block is arranged inside the frame body, the engaging block is telescoped inside the frame body, and an engaging strip made of a buffer material is arranged inside the limiting groove, the engaging block extends out to engage with the engaging strip; A support spring, located at the back end of the engagement block and supporting the engagement block; The movable portion contacts the engagement block, and the movable portion is pressed inward to contract the engagement block.

7. An environmentally friendly automatic arc welding machine based on flange parts processing according to claim 3 or 6, characterized in that: The positioning parts include: The positioning head is stepped, one end of which extends into the flange mounting hole, and an engagement groove is arranged at one end of the positioning head located outside the flange, and the support unit cooperates with the engagement groove; The mounting head is threadedly mounted on one end of the positioning head extending to the inside of the flange mounting hole, and a centering piece is arranged between the mounting head and the positioning head to support the mounting head to be coaxial with the mounting hole.

8. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 7 is characterized in that: The support unit includes: A connecting part connected to the guide frame, with adjusting parts arranged on both sides of the connecting part, the adjusting parts being hinged to the connecting part, and clips arranged on both sides of the connecting part, the clips contacting and supporting the adjusting parts; The clamping head is arranged between the connecting part and the adjusting part. The clamping head extends to the inside of the connecting part and the adjusting part. A fastening screw is arranged inside the clamping head. A clamping plate is arranged outside the fastening screw. The fastening screw rotates to change the position of the clamping plate. The clamping plate cooperates with the clamping head to clamp the connecting part and the adjusting part and fix the position of the clamping head.

9. The environmentally friendly automatic arc welding machine based on flange parts processing according to claim 8 is characterized in that: A clamping plate is arranged inside the welding gun, and the clamping plate clamps the welding rod at one end inside the welding gun. A driving member is arranged inside the welding gun, and a driving end of the driving member is connected to the clamping plate and pushes the clamping plate to move outward.

10. A flange welding method, used in the environmentally friendly automatic arc welding machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: After installing the electrode on the clamping plate of the welding gun, adjust the welding parameters through the control system; The positioning piece is inserted into the mounting hole, and the supporting unit is mounted on the outside of the positioning piece; The welder controls the welding gun to move left and right to perform swing welding, and the welding gun moves inside the guide groove; During the welding process, the welder can accurately adjust the welding current and voltage through the control system to adapt to the welding requirements of different materials and thicknesses.

Images