Edge-welding apparatus for circular tubes

Abstract

The application discloses a round pipe edge sealing welding device and belongs to the technical field of round pipe welding. The device comprises a rack, a moving device, a positioning tool and a welding gun arranged on the rack. The moving device is connected with the welding gun through an adapter plate group. The moving device drives the adapter plate group and the welding gun to move. The adapter plate group adjusts the pitch angle of the welding gun. The welding gun is arranged corresponding to the positioning tool. The positioning tool comprises a base. A main frame, a bracket and a moving track are arranged on the top surface of the base in intervals. A moving sub-frame is installed on the moving track. A round pipe is arranged on the bracket. An installation plate is detachably arranged on the main frame. A top piece is arranged on the moving sub-frame. The top piece and the installation plate are coaxially arranged. The top piece and the installation plate are respectively connected with a power device. The device has flexible welding position adjustment, firm and adaptable round pipe fixation and high-automation-degree welding process, and the quality and efficiency of the round pipe edge sealing welding are improved.

Description

Technical Field

[0001] This application relates to the field of circular tube welding technology, and in particular to a circular tube edge sealing welding device. Background Technology

[0002] Round tube welding is a common production process in industrial manufacturing, widely used in industries such as automobile manufacturing and machining. Traditional round tube welding equipment mainly relies on manual operation, combined with simple mechanical devices to complete the welding task. Manual welding has poor stability, and the welding quality is greatly affected by the operator's skill level and physical condition. Prolonged work can easily lead to fatigue, which in turn affects welding accuracy and quality. In addition, manual welding is inefficient and cannot meet the needs of large-scale production.

[0003] Later, automated welding equipment was gradually designed and put into the market. Related existing technologies include Chinese patent application "A Round Pipe Welding Machine", application number: CN202320055525.X; which discloses a machine including a base plate, a round pipe body, a first electric slide rail disposed on one outer wall of the base plate, and a column disposed on the outer wall of the first electric slide rail. A rotating mechanism is disposed on one outer wall of the base plate, a supporting mechanism is disposed on the top outer wall of the base plate, a groove is disposed on the outer wall of the column, a second electric slide rail is disposed on the inner wall of the groove, a robotic arm is disposed on the inner wall of the second electric slide rail, a welding torch is disposed at one end of the robotic arm, and a first corrugated pipe and a second corrugated pipe are disposed on the outer wall of the robotic arm.

[0004] Although some equipment has achieved partial automation, there are still shortcomings in welding path planning. At the same time, the adjustment process of traditional fixed fixtures is cumbersome, and each time a different specification of round pipe is changed, a lot of time is spent on readjustment, which reduces production efficiency.

[0005] To address the aforementioned issues, this application presents a novel circular tube edge sealing welding device, aiming to solve the problems existing in the prior art and improve the quality and efficiency of circular tube edge sealing welding. Utility Model Content

[0006] The technical problem to be solved by this application is to provide a round tube edge sealing welding equipment, which improves the quality and efficiency of round tube edge sealing welding through flexible welding position adjustment, firm and adaptable round tube fixing, and a highly automated welding process.

[0007] The technical solution adopted in this application is: a round tube edge sealing welding equipment, including a frame, on which a moving device, a positioning fixture and a welding torch are provided. The moving device is connected to the welding torch through a converter plate assembly. When the moving device works, it drives the converter plate assembly and the welding torch to move. When the converter plate assembly works, it adjusts the pitch angle of the welding torch. The welding torch is set with the positioning fixture in accordance with the positioning fixture. The positioning fixture includes a base, on the top surface of which a main frame, a bracket, and a moving track are spaced apart. A moving sub-frame is installed on the moving track. A circular tube is mounted on the bracket. A mounting plate is detachably installed on the main frame. A top component is installed on the moving sub-frame. The top component and the mounting plate are coaxially arranged. The top component and the mounting plate are respectively connected to a power device. The power device drives the top component and the mounting plate to move closer to or further away from each other. The two ends of the circular tube are respectively installed on the mounting plate and the top component.

[0008] Compared with existing technologies, the advantages of this application are as follows: First, the base of the positioning fixture is equipped with a main frame, a bracket, and a moving track at intervals. The moving sub-frame on the moving track can move, allowing the round tube to be flexibly erected and adjusted between the bracket and the moving sub-frame according to its length and position requirements. The detachable mounting plate on the main frame and the top piece on the moving sub-frame are coaxially arranged, and both are connected to a power unit, which can drive the top piece and the mounting plate to move closer or further apart. This design ensures that both ends of the round tube can be firmly clamped between the top piece and the mounting plate, ensuring that the round tube will not shake or shift during welding, thus guaranteeing welding stability. Simultaneously, the detachable mounting plate facilitates the replacement of the appropriate mounting plate according to round tubes of different diameters and shapes, achieving adaptability to different types of round tubes and improving the versatility and flexibility of the equipment.

[0009] Secondly, the moving device can move the adapter plate assembly and welding torch as a whole, allowing the welding torch to quickly reach welding points at different locations, expanding the welding range and adapting to the edge welding needs of round pipes of different lengths and positions. Simultaneously, the adapter plate assembly can adjust the pitch angle of the welding torch. This allows the welding torch to flexibly adjust its welding angle according to the shape of the round pipe and the requirements of the welding position during the welding process, ensuring that the welding torch is always aligned with the welding area at the appropriate angle, thereby improving the accuracy and quality of the welding.

[0010] Finally, the movement of the top piece and the mounting plate closer together or further apart is driven by a power unit. This means that the clamping and releasing process of the round tube can be automated, eliminating the need for manual adjustment, reducing human intervention, and improving welding efficiency and ease of operation. During welding, the power unit can automatically adjust the position of the top piece and the mounting plate according to a preset program or sensor feedback signals to adapt to different needs during welding, further improving the automation and reliability of the welding process.

[0011] In some embodiments of this application, the mounting plate is provided with mounting holes, which are countersunk holes. The inner diameter of the mounting holes is adapted to the outer diameter of the round tube, and one end of the round tube extends into the mounting hole.

[0012] The design of the mounting holes allows for precise positioning of the round tube, ensuring accurate placement during welding, reducing welding deviations, and improving the stability of welding quality.

[0013] In some embodiments of this application, a hollow rotating platform and a servo motor are mounted on the main frame. The output shaft of the servo motor is connected to a rotating tube. One end of the rotating tube extends out of the hollow rotating platform and into the mounting hole. The end face of the rotating tube forms the bottom surface of the mounting hole, and the end face of the rotating tube acts on the circular tube.

[0014] A servo motor drives the circular tube to rotate via a rotary tube, achieving automated control of the tube's rotation during the welding process and improving welding efficiency and quality. A hollow rotary platform provides stable limits for the rotating tube's rotation and reduces frictional resistance, ensuring the smoothness and reliability of the rotation process and further enhancing welding precision and stability.

[0015] In some embodiments of this application, the main frame is equipped with two push cylinders, one on the left and one on the right, and the hollow rotating platform is located between the two push cylinders. The output shafts of the two push cylinders are connected to both ends of the mounting plate, and the operation of the two push cylinders drives the mounting plate and the rotating tube to move axially.

[0016] The design of two push cylinders enables axial movement of the mounting plate and rotating tube. This structure makes the position adjustment of the round tube more flexible during the welding process, adapting to welding requirements of different lengths and positions, and improving the versatility and adaptability of the equipment.

[0017] In some embodiments of this application, the top member includes a head end opposite to the main frame and a tail end away from the main frame. A cylinder is mounted on the movable subframe, and the output shaft of the cylinder is connected to the tail end of the top member. The operation of the output shaft drives the top member to move along the axial direction of the top member.

[0018] The cylinder drives the axial movement of the top component, enabling automatic clamping and release of the round tube. This reduces manual operation and improves welding efficiency and ease of operation. This automated clamping method ensures the stability of the round tube during welding and avoids welding deviations caused by human factors.

[0019] In some embodiments of this application, the head end of the top member includes a middle component and a peripheral component. The middle component is a conical structure, and the peripheral component is sleeved on the outer periphery of the middle component. The middle component and the peripheral component are coaxially arranged, and the end of the middle component acts on the end face of the circular tube.

[0020] The conical structure of the middle component allows for better contact with the end face of the round tube, providing a more stable clamping force and ensuring the stability of the round tube during the welding process. This structural design can accommodate round tubes of different diameters, improving the versatility and flexibility of the equipment.

[0021] In some embodiments of this application, the bracket has two slots, left and right, which extend through both sides of the bracket in a direction parallel to the moving track. A rotating shaft is movably installed at the slot, with both ends of the rotating shaft extending out of the slot and equipped with rollers. A round tube is mounted above the two sets of rollers.

[0022] The roller design makes the placement and movement of the round tube on the bracket more flexible, reduces friction between the round tube and the bracket, and improves the ease of operation.

[0023] In some embodiments of this application, the two ends of the rotating shaft are provided with limiting protrusions, and the two limiting protrusions are located outside the groove.

[0024] The limiting protrusion effectively restricts the axial displacement of the shaft, ensuring the stability and reliability of the roller and preventing instability of the round tube caused by roller displacement.

[0025] In some embodiments of this application, the mobile device includes an X-mobile component, a Y-mobile component, and a Z-mobile component. The X-mobile component is mounted on a frame, the Y-mobile component is mounted on the X-mobile component, the Z-mobile component is mounted on the Y-mobile component, and the adapter board assembly is mounted on the Z-mobile component.

[0026] The moving mechanism provides the welding torch with the ability to move in three-dimensional space. Through the coordinated action of these three moving components, the welding torch can reach the welding position on the surface of the cold water pipe, enabling welding operations on the cold water pipe from all directions and at any angle. This highly flexible movement method can adapt to the requirements of various complex shapes of cold water pipes and welding paths, greatly improving the versatility and welding range of the equipment, meeting the needs of different welding scenarios, and further enhancing the applicability and welding efficiency of the equipment.

[0027] In some embodiments of this application, the adapter plate assembly includes a connecting arm and a rotating plate. The connecting arm is mounted on a moving device, and the rotating plate and the connecting arm are connected by a rotary power cylinder. The welding torch is mounted on the rotating plate.

[0028] The rotating plate and connecting arm are connected by a rotary power cylinder, allowing the welding torch to adjust its pitch angle under the drive of the rotating plate. This angle adjustment function enables the welding torch to better adapt to the optimal welding angle for different welding positions of the cold water pipe, ensuring the stability of the welding process and the quality of the weld.

[0029] Based on common knowledge in the field, the above-described embodiments can be combined arbitrarily. Attached Figure Description

[0030] The present application will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0031] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a side view of this application; Figure 3 This is a top view of this application; Figure 4 for Figure 3 A sectional view of section AA in the middle.

[0032] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Frame; 2. Moving device; 3. Positioning fixture; 4. Welding torch; 6. Base; 7. Main frame; 8. Bracket; 9. Moving track; 10. Moving sub-frame; 11. Mounting plate; 12. Top component; 15. Mounting hole; 16. Hollow rotating platform; 17. Servo motor; 18. Rotating tube; 19. Push cylinder; 20. Cylinder; 21. Middle component; 22. Peripheral component; 23. Groove; 24. Rotating shaft; 25. Roller; 26. Limiting protrusion ring; 27. X-moving assembly; 28. Y-moving assembly; 29. ​​Z-moving assembly; 30. Connecting arm; 31. Rotating plate. Detailed Implementation

[0033] The present application will now be described in detail with reference to the accompanying drawings.

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0035] Round tube edge sealing welding equipment, Example 1 as follows Figure 1 , Figure 2As shown: The system includes a frame 1, on which a moving device 2, a positioning fixture 3, and a welding torch 4 are mounted. The moving device 2 is connected to the welding torch 4 via an adapter plate assembly. The moving device 2, when in operation, moves the adapter plate assembly and the welding torch 4. The adapter plate assembly adjusts the pitch angle of the welding torch 4. The welding torch 4 is positioned corresponding to the positioning fixture 3. The moving device 2 enables the entire assembly to move, allowing the welding torch 4 to quickly reach welding points at different locations, expanding the welding range and adapting to the edge-sealing welding needs of round pipes of varying lengths and positions. Simultaneously, the adapter plate assembly adjusts the pitch angle of the welding torch 4. During welding, the welding torch 4 can flexibly adjust its welding angle according to the shape of the round pipe and the requirements of the welding position, ensuring that the welding torch 4 is always aligned with the welding area at a suitable angle, thereby improving the accuracy and quality of the welding.

[0036] The positioning fixture 3 includes a base 6. A main frame 7, a bracket 8, and a moving track 9 are spaced apart on the top surface of the base 6. A moving sub-frame 10 is mounted on the moving track 9. The round tube is supported on the bracket 8. A mounting plate 11 is detachably mounted on the main frame 7. A top piece 12 is mounted on the moving sub-frame 10, and the top piece 12 is coaxially arranged with the mounting plate 11. The main frame 7, bracket 8, and moving track 9 are spaced apart on the base 6 of the positioning fixture 3. The moving sub-frame 10 on the moving track 9 is movable, allowing the round tube to be flexibly positioned and adjusted between the bracket 8 and the moving sub-frame 10 according to its length and position requirements. The detachable mounting plate 11 on the main frame 7 and the top piece 12 on the moving sub-frame 10 are coaxially arranged, and both are connected to a power unit. The power unit can drive the top piece 12 and the mounting plate 11 to move closer or further apart. This design allows the two ends of the round tube to be firmly clamped between the top piece 12 and the mounting plate 11, ensuring that the round tube will not wobble or shift during welding, thus guaranteeing welding stability. At the same time, the detachable mounting plate 11 facilitates the replacement of the appropriate mounting plate 11 according to round tubes of different diameters and shapes, achieving adaptability to different models of round tubes and improving the equipment's versatility and flexibility.

[0037] The top piece 12 and mounting plate 11 are respectively connected to a power unit. The power unit drives the top piece 12 and mounting plate 11 to move closer or further apart. Both ends of the circular tube are mounted on the mounting plate 11 and the top piece 12, respectively. The movement of the top piece 12 and mounting plate 11 closer or further apart is driven by the power unit. This means that the clamping and releasing process of the circular tube can be automated, eliminating the need for manual adjustment, reducing human intervention, and improving welding efficiency and ease of operation. During welding, the power unit can automatically adjust the positions of the top piece 12 and mounting plate 11 according to a preset program or sensor feedback signals to adapt to different needs during welding, further improving the automation and reliability of the welding process.

[0038] Example 2, as Figures 1 to 4 As shown, the mounting plate 11 is provided with mounting holes 15. The mounting holes 15 are countersunk holes, and the inner diameter of the mounting holes 15 is adapted to the outer diameter of the round tube. One end of the round tube extends into the mounting hole 15. The design of the mounting holes 15 can precisely limit the installation position of the round tube, ensure the accurate position of the round tube during the welding process, reduce welding deviation, and improve the stability of welding quality.

[0039] A hollow rotating platform 16 and a servo motor 17 are mounted on the main frame 7. The output shaft of the servo motor 17 is connected to a rotating tube 18. One end of the rotating tube 18 extends through the hollow rotating platform 16 and into a mounting hole 15. The end face of the rotating tube 18 forms the bottom surface of the mounting hole 15, and the end face of the rotating tube 18 acts on the circular tube. The servo motor 17 drives the circular tube to rotate through the rotating tube 18, realizing automated control of the circular tube rotation during the welding process, improving welding efficiency and quality. The hollow rotating platform 16 provides stable limits for the rotation of the rotating tube 18 and reduces frictional resistance, ensuring the smoothness and reliability of the rotation process, further improving the precision and stability of welding.

[0040] The main frame 7 is equipped with two push cylinders 19, one on the left and one on the right. The hollow rotating platform 16 is located between the two push cylinders 19. The output shafts of the two push cylinders 19 are connected to both ends of the mounting plate 11. The operation of the two push cylinders 19 drives the mounting plate 11 and the rotating tube 18 to move axially. The design of the two push cylinders 19 enables the axial movement of the mounting plate 11 and the rotating tube 18. This structure makes the position adjustment of the round tube during the welding process more flexible, and can adapt to the welding requirements of different lengths and positions, thus improving the versatility and adaptability of the equipment.

[0041] The top member 12 includes a head end opposite to the main frame 7 and a tail end away from the main frame 7. A cylinder 20 is mounted on the movable sub-frame 10. The output shaft of the cylinder 20 is connected to the tail end of the top member 12. The operation of the output shaft drives the top member 12 to move axially. The cylinder 20 drives the axial movement of the top member 12, realizing the automatic clamping and releasing of the round tube by the top member 12, reducing manual operation, improving welding efficiency and ease of operation. This automated clamping method can ensure the stability of the round tube during the welding process and avoid welding deviations caused by human factors.

[0042] The top part 12 includes a middle part 21 and an outer part 22 at its head end. The middle part 21 has a conical structure, and the outer part 22 is fitted around the outer periphery of the middle part 21. The middle part 21 and the outer part 22 are coaxially arranged, and the end of the middle part 21 acts on the end face of the round tube. The conical structure of the middle part 21 allows for better contact with the end face of the round tube, providing a more stable clamping force and ensuring the stability of the round tube during the welding process. This structural design can adapt to round tubes of different diameters, improving the versatility and flexibility of the equipment.

[0043] The bracket 8 has two slots 23 on the left and right sides, which extend through the two sides of the bracket parallel to the moving track 9. A rotating shaft 24 is movably installed at each slot 23, with both ends of the shaft 24 extending out of the slot 23 and fitted with rollers 25. The round tube rests above the two sets of rollers 25. The rollers 25 design allows for more flexible placement and movement of the round tube on the bracket 8, reduces friction between the round tube and the bracket 8, and improves operational convenience.

[0044] The rotating shaft 24 is provided with limiting protrusions 26 at both ends, and the two limiting protrusions 26 are located outside the groove 23. The limiting protrusions 26 effectively restrict the axial displacement of the rotating shaft 24, ensuring the stability and reliability of the roller 25 and avoiding instability of the circular tube caused by the displacement of the roller 25.

[0045] The moving device 2 includes an X-moving component 27, a Y-moving component 28, and a Z-moving component 29. The X-moving component 27 is mounted on the frame 1, the Y-moving component 28 is mounted on the X-moving component 27, and the Z-moving component 29 is mounted on the Y-moving component 28. An adapter plate assembly is mounted on the Z-moving component 29. The moving device 2 provides the welding torch 4 with three-dimensional movement capability. Through the coordinated action of these three moving components, the welding torch 4 can reach the welding position on the surface of the cold water pipe, realizing omnidirectional and arbitrary angle welding operations on the cold water pipe. This highly flexible movement method can adapt to the requirements of various complex shapes and welding paths of cold water pipes, greatly improving the versatility and welding range of the equipment, meeting the needs of different welding scenarios, and further enhancing the applicability and welding efficiency of the equipment.

[0046] The adapter plate assembly includes a connecting arm 30 and a rotating plate 31. The connecting arm 30 is mounted on the moving device 2, and the rotating plate 31 is connected to the connecting arm 30 via a rotary power cylinder. The welding torch 4 is mounted on the rotating plate 31. The connection between the rotating plate 31 and the connecting arm 30 via the rotary power cylinder allows the welding torch 4 to adjust its pitch angle under the drive of the rotating plate 31. This angle adjustment function enables the welding torch 4 to better adapt to the optimal welding angle when the cold water pipe is in different welding positions, ensuring the stability of the welding process and the welding quality.

[0047] The rest of the contents of Example 2 are the same as those of Example 1.

[0048] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A circular tube edge sealing welding equipment, characterized in that, Includes a frame (1), on which a moving device (2), a positioning fixture (3) and a welding torch (4) are provided. The moving device (2) is connected to the welding torch (4) through a transition plate assembly. When the moving device (2) works, it drives the transition plate assembly and the welding torch (4) to move. When the transition plate assembly works, it adjusts the pitch angle of the welding torch (4). The welding torch (4) is set in accordance with the positioning fixture (3). The positioning fixture (3) includes a base (6). A main frame (7), a bracket (8), and a moving track (9) are spaced apart on the top surface of the base (6). A moving sub-frame (10) is installed on the moving track (9). A round tube is mounted on the bracket (8). A mounting plate (11) is detachably installed on the main frame (7). A top piece (12) is installed on the moving sub-frame (10). The top piece (12) and the mounting plate (11) are coaxially arranged. The top piece (12) and the mounting plate (11) are respectively connected to a power device. The power device drives the top piece (12) and the mounting plate (11) to move closer to each other or further away from each other. The two ends of the round tube are respectively installed on the mounting plate (11) and the top piece (12).

2. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The mounting plate (11) is provided with mounting holes (15), which are countersunk holes. The inner diameter of the mounting hole (15) is adapted to the outer diameter of the round tube, and one end of the round tube extends into the mounting hole (15).

3. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The main frame (7) is equipped with a hollow rotating platform (16) and a servo motor (17). The output shaft of the servo motor (17) is connected to a rotating tube (18). One end of the rotating tube (18) passes through the hollow rotating platform (16) and the other end of the rotating tube (18) extends into the mounting hole (15). The end face of the rotating tube (18) forms the bottom surface of the mounting hole (15). The end face of the rotating tube (18) acts on the round tube.

4. The circular tube edge sealing welding equipment according to claim 3, characterized in that, The main frame (7) is equipped with two push cylinders (19) on the left and right. The hollow rotating platform (16) is located between the two push cylinders (19). The output shafts of the two push cylinders (19) are connected to both ends of the mounting plate (11). The two push cylinders (19) work to drive the mounting plate (11) and the rotating tube (18) to move axially.

5. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The top piece (12) includes a head end opposite to the main frame (7) and a tail end away from the main frame (7). A cylinder (20) is installed on the movable sub-frame (10). The output shaft of the cylinder (20) is connected to the tail end of the top piece (12). The operation of the output shaft drives the top piece (12) to move along the axial direction of the top piece (12).

6. The circular tube edge sealing welding equipment according to claim 5, characterized in that, The top part (12) includes a middle part (21) and an outer part (22). The middle part (21) is a conical structure. The outer part (22) is sleeved on the outer periphery of the middle part (21). The middle part (21) and the outer part (22) are coaxially arranged. The end of the middle part (21) acts on the end face of the circular tube.

7. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The bracket (8) has two slots (23) on the left and right sides. The slots (23) extend through the two sides of the bracket in a direction parallel to the moving track (9). A rotating shaft (24) is movably installed at the slot (23). The two ends of the rotating shaft (24) extend out of the slot (23) and are equipped with rollers (25). The round tube is mounted above the two sets of rollers (25).

8. The circular tube edge sealing welding equipment according to claim 7, characterized in that, The two ends of the rotating shaft (24) are provided with limiting protrusions (26), and the two limiting protrusions (26) are located outside the groove (23).

9. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The mobile device (2) includes an X-moving component (27), a Y-moving component (28) and a Z-moving component (29). The X-moving component (27) is mounted on the frame (1), the Y-moving component (28) is mounted on the X-moving component (27), the Z-moving component (29) is mounted on the Y-moving component (28), and the adapter plate assembly is mounted on the Z-moving component (29).

10. The circular tube edge sealing welding equipment according to claim 1, characterized in that, The adapter plate assembly includes a connecting arm (30) and a rotating plate (31). The connecting arm (30) is mounted on the moving device (2). The rotating plate (31) and the connecting arm (30) are connected by a rotating power cylinder. The welding torch (4) is mounted on the rotating plate (31).

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