A stainless steel pipe welding device

Abstract

This utility model relates to the field of stainless steel pipe welding technology and discloses a stainless steel pipe welding device, including a base frame and an auxiliary pressing device. This stainless steel pipe welding device supports the stainless steel pipes through the cooperation of a front support roller and a rear support roller, aligning the ends of two stainless steel pipes. Then, an upper pressing roller presses the pipes downwards from above to fix them, ensuring that the two stainless steel pipes remain on the same axis. During welding and rotation, the front support roller, rear support roller, and upper pressing roller maintain a pressing and limiting state to prevent the ends of the two stainless steel pipes from shifting, affecting the quality of the joint and thus improving the welding quality. By adjusting the joint length of the lower connecting plate and the upper connecting plate, the support length of the upper pressing roller can be adjusted, making it suitable for pressing and positioning stainless steel pipes of different diameters, thus applicable to welding stainless steel pipes of different sizes and expanding its applicability.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe welding technology, specifically to a stainless steel pipe welding device. Background Technology

[0002] Manual welding of steel pipes is technically challenging. During the welding process, the ends of two steel pipes need to be aligned, and the pipes need to be rotated to adjust the welding position. Ordinary welding tables cannot guarantee the alignment of the steel pipes, affecting the welding quality. Furthermore, during the initial welding rotation, the poor connection at the welding position can easily damage the welding position of the steel pipe, affecting the welding quality. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a stainless steel pipe welding device that solves the problems of high alignment difficulty during welding and easy damage to the welding position during rotation.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel pipe welding device, comprising a base frame and an auxiliary pressing device. A front support frame is fixedly installed on the front side of the top of the base frame, and a front support roller is rotatably installed on the left side wall of the front support frame via a bearing. A rear support frame is fixedly installed on the rear side of the top of the base frame, and a rear support roller is rotatably installed on the left side wall of the rear support frame via a bearing. A stainless steel pipe is clamped above the front and rear support rollers, and an auxiliary pressing device for pressing from above is provided above the stainless steel pipe.

[0007] Preferably, the auxiliary pressing device includes a lower support rod, an upper support rod, and an upper pressing roller. The lower support rod is rotatably mounted to the right side wall of the rear support frame via a bearing. The upper support rod is connected to the end of the lower support rod away from the rear support frame. The upper pressing roller is rotatably mounted to the left side wall of the upper support rod via a bearing. The upper pressing roller presses down on the stainless steel tube.

[0008] Preferably, the auxiliary pressing device further includes a lower connecting plate, an upper connecting plate, connecting holes, and connecting bolts. The lower connecting plate is fixedly installed to the end of the lower support rod, and the upper connecting plate is fixedly installed to the end of the upper support rod. Connecting holes are provided on the surfaces of both the lower and upper connecting plates. The connecting bolts pass through the connecting holes on the surfaces of the lower and upper connecting plates to connect and fix the lower and upper connecting plates.

[0009] Preferably, the surfaces of the front support roller, the rear support roller, and the upper pressing roller are provided with grooves at the middle position, and the joint of the two stainless steel pipes is located at the groove position.

[0010] Preferably, a plurality of connection holes are provided.

[0011] Preferably, the base frame is rectangular and is welded from right-angled angle steel.

[0012] Compared with the prior art, the present invention provides a stainless steel pipe welding device, which has the following advantages:

[0013] 1. This stainless steel pipe welding device supports the stainless steel pipes through the cooperation of the front and rear support rollers and aligns the ends of the two stainless steel pipes. Then, the upper pressing roller presses down on the steel pipes from above to fix them, so that the two stainless steel pipes can be kept on the same axis. During welding and rotation, the front support roller, rear support roller and upper pressing roller maintain the pressing limit state to prevent the position of the two stainless steel pipe ends from shifting and affecting the quality of the connection, thereby improving the quality of welding.

[0014] 2. This stainless steel pipe welding device can adjust the length of the support for the upper pressing roller by adjusting the length of the butt joint between the lower connecting plate and the upper connecting plate. It is suitable for pressing and positioning stainless steel pipes of different diameters, and thus can be used for welding stainless steel pipes of different sizes, thereby improving its applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0017] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0018] The components are: 1. Base frame; 2. Front support frame; 3. Front support roller; 4. Rear support frame; 5. Rear support roller; 6. Stainless steel pipe; 7. Auxiliary pressing device; 71. Lower support rod; 72. Lower connecting plate; 73. Upper connecting plate; 74. Upper support rod; 75. Upper pressing roller; 76. Connecting hole; 77. Connecting bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a stainless steel pipe welding device, including a base frame 1 and an auxiliary pressing device 7. A front support frame 2 is fixedly installed on the front side of the top of the base frame 1. A front support roller 3 is rotatably installed on the left side wall of the front support frame 2 via a bearing. A rear support frame 4 is fixedly installed on the rear side of the top of the base frame 1. A rear support roller 5 is rotatably installed on the left side wall of the rear support frame 4 via a bearing. The bottom of the stainless steel pipe 6 is supported and positioned by the front support roller 3 and the rear support roller 5 from the front and rear sides respectively. The front support roller 3 and the rear support roller 5 can rotate, so that the stainless steel pipe 6 can rotate around its axis under the support of the front support roller 3 and the rear support roller 5. During welding, the rotation of the stainless steel pipe 6 around its axis provides high stability. The stainless steel pipe 6 is clamped above the front support roller 3 and the rear support roller 5. An auxiliary pressing device 7 for pressing from above is provided above the stainless steel pipe 6.

[0021] Furthermore, the auxiliary pressing device 7 includes a lower support rod 71, an upper support rod 74, and an upper pressing roller 75. The lower support rod 71 is rotatably mounted to the right side wall of the rear support frame 4 via a bearing. The upper support rod 74 is connected to the end of the lower support rod 71 away from the rear support frame 4. The upper pressing roller 75 is rotatably mounted to the left side wall of the upper support rod 74 via a bearing. The upper pressing roller 75 presses down on the top of the stainless steel pipe 6, pressing the top of the stainless steel pipe 6 from above, so that during the welding process, the stainless steel pipe 6 is supported by the front support rod. The support roller 3, rear support roller 5, and upper pressing roller 75 are clamped and fixed to prevent the stainless steel pipe 6 from shifting and vibrating during subsequent welding, thus improving the quality of subsequent welding. An elastic support rod is installed on the rear side of the lower support rod 71. The bottom end of the elastic support rod is fixedly installed on the surface of the support frame 4. The elastic support rod supports the lower support rod 71 and applies a forward deflection force to the lower support rod 71 to press the stainless steel pipe 6, thereby improving the stability of the auxiliary pressing device 7 pressing the stainless steel pipe 6.

[0022] Furthermore, the auxiliary pressing device 7 also includes a lower connecting plate 72, an upper connecting plate 73, a connecting hole 76, and a connecting bolt 77. The lower connecting plate 72 is fixedly installed at the end of the lower support rod 71, and the upper connecting plate 73 is fixedly installed at the end of the upper support rod 74. Both the lower connecting plate 72 and the upper connecting plate 73 have connecting holes 76 on their surfaces. The connecting bolt 77 passes through the connecting holes 76 on the surfaces of the lower connecting plate 72 and the upper connecting plate 73 to connect and fix the lower connecting plate 72 and the upper connecting plate 73. By adjusting the length of the overlapping and fixed installation of the lower connecting plate 72 and the upper connecting plate 73, the length of the support for the upper pressing roller 75 can be adjusted to adapt to the pressing and fixing of stainless steel pipes 6 of different diameters.

[0023] Furthermore, grooves are provided on the surfaces of the front support roller 3, the rear support roller 5, and the upper pressing roller 75 at the middle position. The joint of the two stainless steel pipes 6 is located at the groove position. During the welding process, weld slag protrusions will be generated at the weld position of the stainless steel pipes 6. The grooves can prevent the protrusions generated by the weld slag from directly contacting the front support roller 3, the rear support roller 5, and the upper pressing roller 75, so as to prevent affecting the stability of supporting the stainless steel pipes 6 and the stability during subsequent rotation.

[0024] Furthermore, several connecting holes 76 are provided. By adjusting the overlap length of the upper connecting plate 73 and the lower connecting plate 72, and then using connecting bolts 77 to pass through the overlap connecting holes 76 to fix the lower connecting plate 72 and the upper connecting plate 73, the support length of the upper support rod 74 and the upper pressing roller 75 can be adjusted by adjusting the extension length of the upper connecting plate 73, which facilitates pressing and clamping the upper part of stainless steel pipes 6 of different diameters and improves the applicability.

[0025] Furthermore, the base frame 1 is rectangular and is welded from right-angle steel. Right-angle steel is low in cost and has excellent structural stability.

[0026] In use, hold the upper support rod 74 and push it backward, causing the upper support rod 74 to drive the upper connecting plate 73, connecting bolt 77, lower connecting plate 72, and lower support rod 71 to deflect backward along the top of the rear support frame 4. This causes the upper support rod 74 to drive the upper pressing roller 75 to deflect backward. Then, place the two stainless steel pipes 6 to be welded into the gap between the front support roller 3 and the rear support roller 5, and push the joints of the two stainless steel pipes 6 to the groove positions opened on the surfaces of the front support roller 3 and the rear support roller 5. Then, control the upper support rod 74 to drive the upper pressing roller 75 to flip forward, so that... The upper pressing roller 75 presses down on the stainless steel tube 6, fixing it from above. Then, a welding torch can be used to weld the gap between the two stainless steel tubes 6. During welding, adjusting the angle of the stainless steel tube 6 allows for direct rotation. The stainless steel tube 6 deflects under the support and positioning of the front support roller 3, rear support roller 5, and upper pressing roller 75. This deflection also causes the front support roller 3, rear support roller 5, and upper pressing roller 75 to rotate. Through this rotation, the front support roller 3, rear support roller 5, and upper pressing roller 75 reduce unevenness. The resistance during the rotation of the stainless steel pipe 6 facilitates welding operations, allowing the stainless steel pipe 6 to rotate smoothly for welding. During rotation, the weld seam remains within the grooves on the surfaces of the front support roller 3, rear support roller 5, and upper pressing roller 75. This prevents weld slag from lifting the connection point of the two stainless steel pipes 6, affecting their horizontal fixation and improving rotational stability. It also ensures that the axes of the two stainless steel pipes 6 remain aligned during welding, preventing the stainless steel pipe 6 from tilting due to weld slag support. This is particularly important when welding larger diameter stainless steel pipes. When welding tube 6, if the upper pressing roller 75 cannot be secured above the stainless steel tube 6, the connecting bolt 77 is removed, and then the overlap length of the upper connecting plate 73 and the lower connecting plate 72 is reduced, causing the upper connecting plate 73 to extend outward. Then, the connecting bolt 77 is inserted into the overlapping connecting hole 76 to fix the lower connecting plate 72 and the upper connecting plate 73. With the support of the upper connecting plate 73, the upper support rod 74 and the upper pressing roller 75 extend outward, so that the extended upper pressing roller 75 can press and fix the stainless steel tube 6 with a larger diameter, thus improving the applicability.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel pipe welding device, comprising a base frame (1) and an auxiliary pressing device (7), characterized in that: A front support frame (2) is fixedly installed on the front side of the top of the base frame (1). A front support roller (3) is rotatably installed on the left side wall of the front support frame (2) via a bearing. A rear support frame (4) is fixedly installed on the rear side of the top of the base frame (1). A rear support roller (5) is rotatably installed on the left side wall of the rear support frame (4) via a bearing. A stainless steel pipe (6) is snapped above the front support roller (3) and the rear support roller (5). An auxiliary pressing device (7) for pressing from above is provided above the stainless steel pipe (6).

2. The stainless steel pipe welding device according to claim 1, characterized in that: The auxiliary pressing device (7) includes a lower support rod (71), an upper support rod (74), and an upper pressing roller (75). The lower support rod (71) is rotatably mounted to the right side wall of the rear support frame (4) via a bearing. The upper support rod (74) is connected to the end of the lower support rod (71) away from the rear support frame (4). The upper pressing roller (75) is rotatably mounted to the left side wall of the upper support rod (74) via a bearing. The upper pressing roller (75) presses on the top of the stainless steel tube (6).

3. The stainless steel pipe welding device according to claim 2, characterized in that: The auxiliary pressing device (7) further includes a lower connecting plate (72), an upper connecting plate (73), a connecting hole (76), and a connecting bolt (77). The lower connecting plate (72) is fixedly installed at the end of the lower support rod (71), and the upper connecting plate (73) is fixedly installed at the end of the upper support rod (74). The lower connecting plate (72) and the upper connecting plate (73) are both provided with connecting holes (76). The connecting bolt (77) passes through the connecting holes (76) on the surfaces of the lower connecting plate (72) and the upper connecting plate (73) to connect and fix the lower connecting plate (72) and the upper connecting plate (73).

4. The stainless steel pipe welding device according to claim 3, characterized in that: The surfaces of the front support roller (3), the rear support roller (5) and the upper pressing roller (75) are provided with grooves in the middle, and the joint of the two stainless steel pipes (6) is located in the groove.

5. The stainless steel pipe welding device according to claim 3, characterized in that: The connection hole (76) has a total of several holes.

6. The stainless steel pipe welding device according to claim 1, characterized in that: The base frame (1) is rectangular and is welded from right-angle steel.

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