Flange girth welding clamp capable of automatically adjusting gap

Abstract

The utility model relates to the field of flange machining, in particular to a flange girth welding clamp capable of automatically adjusting a gap. According to existing equipment, joints between a welding gun and a circular pipe and between the welding gun and a flange are manually adjusted, and automatic adjustment is difficult when the circular pipe and the flange are clamped by a clamp. A flange girth welding clamp capable of automatically adjusting a gap comprises a bottom plate, a three-jaw chuck and the like. A three-jaw chuck is rotationally connected to the bottom plate, a flange is placed on the three-jaw chuck, and a round pipe is placed on the three-jaw chuck. The rolling wheels make contact with the round pipe so that the welding gun sliding frame fixed to the sliding frame can be close to the round pipe, the welding gun can adjust the distance between the welding gun and the joint of the round pipe and the flange according to the diameter of the round pipe, and the rolling balls are guided by the flange to move upwards so that the welding gun fixed to the sliding frame can move upwards. Furthermore, the welding gun can more accurately adjust the distance from the welding gun to the joint of the circular pipe and the flange according to the thickness of the flange, so that the circular pipe and the flange can be more accurately welded.

Description

Technical Field

[0001] The utility model relates to the field of flange processing, in particular to a flange girth welding fixture with automatic clearance adjustment. Background Technique

[0002] When existing manufacturers weld a round pipe and a flange, the round pipe and the flange are fixed by the fixture on the girth weld. Since the thicknesses of the flanges are different, workers need to adjust the position of the welding torch. It is difficult to automatically adjust when the fixture clamps the round pipe and the flange. However, the positions adjusted manually each time have slight differences, so that the positions of the welding torch at the joints of the flange and the round pipe actually vary within the tolerance range, and the flange welds are affected by the manual adjustment, which will seriously affect the welding uniformity and the appearance of the welds. Summary of the Utility Model

[0003] In order to overcome the defect that existing equipment adjusts the position of the welding torch at the joints of the round pipe and the flange manually and it is difficult to automatically adjust when the fixture clamps the round pipe and the flange, the utility model provides a flange girth welding fixture with automatic clearance adjustment, which can automatically adjust the position of the welding torch when the fixture fixes the round pipe and the flange, and can more precisely adjust the position according to the round pipe and the flange, facilitating more accurate welding of the round pipe and the flange.

[0004] The technical solution is as follows: A flange girth welding fixture with automatic clearance adjustment includes a bottom plate, a three-jaw chuck, jaws and a rotating knob. The three-jaw chuck is rotatably connected to the bottom plate. A flange is placed on the three-jaw chuck, and a round pipe is placed on the three-jaw chuck. The flange and the round pipe are in contact. There are three jaws on the three-jaw chuck, and a rotating knob is provided on the three-jaw chuck.

[0005] Preferably, it further includes a guide frame, a moving plate, an electric push rod, a connecting rod, a sliding frame, a rolling wheel, a support spring and a welding torch. A guide frame is fixedly connected to each of the two sides of the bottom plate. A moving plate is slidably connected to each guide frame. Two electric push rods are fixedly connected to the bottom plate. A connecting rod is fixedly connected to each moving plate. The lifting rod of each electric push rod is fixedly connected to a connecting rod. A sliding frame is slidably connected to each moving plate. Two rolling wheels are rotatably connected to each sliding frame. A support spring is connected between each moving plate and a sliding frame.

[0006] Preferably, it further includes a moving frame, a connecting plate and a ball. A moving frame is slidably connected to each moving plate. Two connecting plates are fixedly connected to each moving frame. Each sliding frame is fixedly connected to the two connecting plates. Three balls are rotatably connected to each moving frame.

[0007] Preferably, it further includes a friction frame. A friction frame is fixedly connected to each of the two sides of the bottom plate. The friction frame is in contact with the sliding frame, and a small inclined surface is provided on the friction frame.

[0008] Advantages of the utility model: 1. The contact between the rolling wheel and the round tube makes the welding torch holder fixed on the sliding frame close to the round tube, so that the distance between the welding torch and the joint of the round tube and the flange can be adjusted according to the diameter of the round tube. The ball is guided by the flange to move upward, making the welding torch holder fixed on the sliding frame move upward. Further, the distance between the welding torch and the joint of the round tube and the flange can be adjusted more precisely according to the thickness of the flange, which is convenient for more accurate welding of the round tube and the flange.

[0009] 2. When the moving frame moves, it will contact the inclined plane. When the sliding frame continues to move, the friction frame will deform. The deformation of the friction frame will lock the sliding frame, making the welding torch fixed on the sliding frame more stable. Description of the drawings

[0010] Figure 1 It is a three-dimensional structure diagram of the utility model.

[0011] Figure 2 It is the first partial three-dimensional structure diagram of the utility model.

[0012] Figure 3 It is the second partial three-dimensional structure diagram of the utility model.

[0013] Figure 4 It is the third partial three-dimensional structure diagram of the utility model.

[0014] Figure 5 It is a three-dimensional structure diagram of the friction frame of the utility model.

[0015] Description of reference numerals: 1 - bottom plate, 3 - three-jaw chuck, 31 - jaw, 32 - rotation knob, 4 - flange, 5 - round tube, 6 - guide frame, 7 - moving plate, 8 - electric push rod, 9 - connecting rod, 10 - sliding frame, 11 - rolling wheel, 12 - support spring, 15 - moving frame, 16 - connecting plate, 17 - ball, 18 - friction frame. Detailed implementation manners

[0016] The utility model will be further described below in conjunction with the drawings and specific implementation manners.

[0017] Embodiment 1: A flange ring welding fixture with automatic gap adjustment, as Figures 1 - 3 shown, includes a bottom plate 1, a three-jaw chuck 3, jaws 31 and a rotation knob 32. The three-jaw chuck 3 is rotatably connected to the bottom plate 1. A flange 4 is placed on the three-jaw chuck 3, and a round tube 5 is placed on the three-jaw chuck 3. The flange 4 and the round tube 5 are in contact. There are three jaws 31 on the three-jaw chuck 3, and a rotation knob 32 is provided on the three-jaw chuck 3.

[0018] It further includes a guide frame 6, a moving plate 7, an electric push rod 8, a connecting rod 9, a sliding frame 10, rolling wheels 11, a support spring 12 and a welding torch 13. A guide frame 6 is welded to each side of the bottom plate 1. A moving plate 7 is slidably connected to each guide frame 6. Two electric push rods 8 are bolted to the bottom plate 1. A connecting rod 9 is welded to each moving plate 7. The lifting rod of each electric push rod 8 is fixedly connected to a connecting rod 9. A sliding frame 10 is slidably connected to each moving plate 7. Two rolling wheels 11 are rotatably connected to each sliding frame 10. The two rolling wheels 11 are used to fix the circular tube 5. A support spring 12 is connected between each moving plate 7 and a sliding frame 10. A welding torch is bolted to one of the sliding frames 10.

[0019] It further includes a moving frame 15, a connecting plate 16 and ball bearings 17. A moving frame 15 is slidably connected to each moving plate 7. Two connecting plates 16 are welded to each moving frame 15. Each sliding frame 10 is welded to the two connecting plates 16. Three ball bearings 17 are rotatably connected to each moving frame 15.

[0020] At first, the staff placed the flange 4 and the round tube 5 on the three-jaw chuck 3. When the staff rotated the rotation knob 32 of the three-jaw chuck 3, the jaws 31 on the three-jaw chuck 3 would fix the flange 4 and make the center of the flange 4 coincide with the center of the three-jaw chuck 3. Then the staff activated the electric push rod 8. The telescopic rod of the electric push rod 8 would drive the connecting rod 9 and the moving plate 7 to move. The movement of the moving plate 7 would drive the sliding frame 10, the rolling wheel 11, the support spring 12, and the welding torch 13 to move. The movement of the rolling wheel 11 would make the rolling wheel 11 contact with the round tube 5. The rolling wheel 11 would limit the position of the round tube 5, and the welding torch 13 would approach. At the same time, the movement of the sliding frame 10 would drive the moving frame 15, the connecting plate 16, and the ball 17 to move. The movement of the ball 17 would contact the joint between the round tube 5 and the flange 4. The movement of the ball 17 would be guided by the flange 4 and make the ball 17 move upward. The upward movement of the ball 17 would drive the moving frame 15 and the connecting plate 16 to move upward. The upward movement of the connecting plate 16 would make the sliding frame 10 and the welding torch 13 move upward. The upward movement of the sliding frame 10 would stretch the support spring 12, which could automatically adjust the position of the welding torch 13 when the fixture fixed the round tube 5 and the flange 4. The staff closed the electric push rod 8. The welding torch 13 was fixed on one of the sliding frames 10. The contact between the rolling wheel 11 and the round tube 5 made the welding torch 13 on the sliding frame 10 close to the round tube 5, so that the welding torch 13 could adjust the distance from the welding torch 13 to the joint between the round tube 5 and the flange 4 according to the diameter of the round tube 5. The upward movement of the ball 17 guided by the flange 4 made the welding torch 13 fixed on the sliding frame 10 move upward, further enabling the welding torch 13 to more precisely adjust the distance from the welding torch 13 to the joint between the round tube 5 and the flange 4 according to the thickness of the flange 4, which was convenient for more precisely welding the round tube 5 and the flange 4. After the welding was completed, the staff activated the electric push rod 8, and the electric push rod 8 drove the moving plate 7, the connecting rod 9, the sliding frame 10, the rolling wheel 11, the support spring 12, the moving frame 15, the connecting plate 16, and the ball 17 to reset. The staff rotated the rotation knob 32 to make the jaws 31 on the three-jaw chuck 3 reset.

[0021] Embodiment 2: On the basis of Embodiment 1, as Figures 1 - 5 shown, it further includes a friction frame 18. A friction frame 18 is welded on each side of the bottom plate 1. Each friction frame 18 contacts with a sliding frame 10, and the friction frame 18 is provided with a small inclined plane.

[0022] The movement of the sliding frame 10 will contact the inclined plane. The continuous movement of the sliding frame 10 will cause the friction frame 18 to deform. The deformation of the friction frame 18 will clamp the sliding frame 10, making the welding torch 13 fixed on the sliding frame 10 more stable. The reset of the sliding frame 10 will disengage from the inclined plane of the friction frame 18 and make the friction frame 18 reset.

[0023] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included within the patent protection scope of the present utility model.

Claims

1. An automatic clearance-adjusting flange ring welding fixture, characterized in that, It includes a bottom plate (1), a three-jaw chuck (3), a jaw (31) and a rotating knob (32). The three-jaw chuck (3) is rotatably connected to the bottom plate (1). A flange (4) is placed on the three-jaw chuck (3), and a round tube (5) is placed on the three-jaw chuck (3). The flange (4) and the round tube (5) are in contact. There are three jaws (31) on the three-jaw chuck (3), and a rotating knob (32) is provided on the three-jaw chuck (3).

2. The automatic clearance-adjusting flange ring welding fixture according to claim 1, characterized in that, It further includes a guide frame (6), a moving plate (7), an electric push rod (8), a connecting rod (9), a sliding frame (10), a rolling wheel (11) and a support spring (12). A guide frame (6) is fixedly connected to each side of the bottom plate (1). A moving plate (7) is slidably connected to each guide frame (6). Two electric push rods (8) are fixedly connected to the bottom plate (1). A connecting rod (9) is fixedly connected to each moving plate (7). The lifting rod of each electric push rod (8) is fixedly connected to a connecting rod (9). A sliding frame (10) is slidably connected to each moving plate (7). Two rolling wheels (11) are rotatably connected to each sliding frame (10). A support spring (12) is connected between each moving plate (7) and a sliding frame (10).

3. The automatic clearance-adjusting flange ring welding fixture according to claim 2, wherein, It further includes a moving frame (15), a connecting plate (16) and a ball (17). A moving frame (15) is slidably connected to each moving plate (7). Two connecting plates (16) are fixedly connected to each moving frame (15). Each sliding frame (10) is fixedly connected to the two connecting plates (16). Three balls (17) are rotatably connected to each moving frame (15).

4. The automatic clearance-adjusting flange ring welding fixture according to claim 3, wherein It further includes a friction frame (18). A friction frame (18) is fixedly connected to each side of the bottom plate (1). The friction frame (18) is in contact with the sliding frame (10), and a small inclined plane is provided on the friction frame (18).

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