Auxiliary welding tool for stainless steel longitudinal welded pipe

Abstract

The utility model discloses an auxiliary welding tool for a stainless steel straight welded pipe, which comprises a pinch roller, and the pinch roller is arranged on the outer side of a pipe to be welded and can be in rolling compression joint with the welding edge of the pipe to be welded. According to the utility model, through the arrangement of the pinch roller, the welding edge of the pipe to be welded can be flattened, so that the poor dislocation of a welding seam is avoided; the pressing wheel can be driven to be adjusted in the up-down direction through the arrangement of the fixing plate and the first support, the pressing wheel can be driven to be adjusted front and back in the pipe conveying direction through the connection of the first support and the second support, the pressing degree of the pressing wheel and the pipe can be adjusted through the connection of the second support and the third support, and therefore the device is suitable for pipes of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling auxiliary equipment technology, and more specifically to an auxiliary welding tooling for stainless steel straight seam welded pipes. Background Technology

[0002] Currently, the production process of stainless steel TIG straight seam welded pipes largely relies on the experience and skills of employees, as well as the precision of molds and equipment. In particular, weld misalignment defects, which occur during the welding process in pipe manufacturing, are severely constrained by employee skills and experience. Furthermore, due to the influence of equipment and mold precision and functional stability, weld misalignment defects also frequently occur during pipe manufacturing and welding. Weld misalignment defects directly lead to a decrease in the mechanical properties of the pipe weld, significantly impacting subsequent product processing and quality. Severely misaligned pipes directly result in scrap, reducing the pipe yield and increasing manufacturing costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to avoid weld misalignment and defects.

[0004] This utility model solves the above-mentioned technical problems through the following technical means: an auxiliary welding fixture for stainless steel straight seam welded pipe, including a clamping wheel, the clamping wheel being disposed on the outside of the pipe to be welded and capable of rolling and pressing with the weld edge of the pipe to be welded.

[0005] As a preferred technical solution, the clamping roller can make the two weld edges of the pipe to be welded flush.

[0006] As a preferred technical solution, a connecting bracket is also included. The clamping wheel is located on the outside of the pipe to be welded via the connecting bracket, and the connecting bracket is fixedly connected to the flat roller frame of the pipe welding equipment.

[0007] As a preferred technical solution, the connecting bracket includes a second bracket, and the clamping wheel is fixedly connected to the end of the second bracket facing the pipe and can move toward or away from the pipe.

[0008] As a preferred technical solution, the support 2 is slidably connected to the support 3 at the end facing the pipe, the support 2 is provided with a slide rail adapted to the support 3, and the support 2 is threadedly connected to the end facing away from the pipe with an adjusting bolt, the end of the adjusting bolt extending into the slide rail and abutting against the support 3.

[0009] As a preferred technical solution, the connecting bracket further includes a bracket one, and the bracket two is slidable relative to the bracket one. The bracket two is also connected and fastened to the bracket one by a connecting bolt one.

[0010] As a preferred technical solution, the bracket one includes a vertical section and a horizontal section fixedly connected. The horizontal section has a waist hole. The bracket two has threaded holes at both ends that are compatible with the connecting bolt one. The rod of the connecting bolt one extends into the waist hole and slides with it.

[0011] As a preferred technical solution, the connecting bracket further includes a fixing plate, which is fixedly connected to the vertical section of the bracket by connecting bolt two, and the bracket one has a waist hole that matches the connecting bolt two.

[0012] As a preferred technical solution, the clamping wheel is located upstream of the welding gun along the direction of pipe movement.

[0013] As a preferred technical solution, the third bracket is inclined.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) In this utility model, by setting the pressure roller, the weld edge of the pipe to be welded can be flattened, thereby avoiding the occurrence of weld misalignment.

[0016] (2) In this utility model, the setting of the fixing plate and the bracket can drive the pressing wheel to adjust in the up and down direction. The connection between the bracket and the bracket can drive the pressing wheel to adjust back and forth in the direction of pipe conveying. The connection between the bracket and the bracket can adjust the pressing degree between the pressing wheel and the pipe, thereby adapting to pipes of different sizes. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0018] Reference numerals: 1. Fixing plate; 2. Bracket 1; 3. Bracket 2; 4. Welding torch; 5. Pressure roller; 6. Pipe; 7. Bracket 3; 8. Adjusting bolt; 9. Connecting bolt 1; 10. Connecting bolt 2; 11. Weld bead. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See Figure 1A stainless steel straight seam welded pipe auxiliary welding fixture includes a clamping wheel 5, which is located above the pipe 6. The clamping wheel 5 rolls and presses against the weld edge of the pipe 6. In this embodiment, the rolling and pressing refers to rolling connection and clamping connection. The clamping wheel 5 is used to flatten the edge of the pipe 6 to be welded, thereby controlling the two weld edges to be flush. The welding gun 4 is used to weld the two weld edges. After the two weld edges are welded, a weld bead 11 is formed. In this embodiment, the clamping wheel 5 is located upstream of the weld pool, that is, the clamping wheel 5 is located upstream of the welding gun 4. The clamping wheel 5 can be made of wear-resistant material.

[0021] See Figure 1 The clamping wheel 5 is fixedly connected to the connecting bracket and is fixedly connected to the flat roller frame of the welding pipe equipment through the connecting bracket. The connecting bracket includes a fixing plate 1, a bracket 1 2, a bracket 2 3, and a bracket 3 7. In this embodiment, there are two fixing plates 1 and two brackets 1 2. The two fixing plates 1 and brackets 1 2 are located on both sides of the pipe 6. The end of the fixing plate 1 facing away from the pipe 6 is fixedly connected to the flat roller frame of the welding pipe equipment. The end of the fixing plate 1 facing the pipe 6 is fixedly connected to the bracket 1 2. The bracket 1 2 is a T-shaped structure, which includes a vertical section and a horizontal section that are fixedly connected or integrally formed. Both the vertical section and the horizontal section are provided with waist holes. The fixing plate 1 is connected and fastened to the bracket 1 2 through the connecting bolt 2 10. The fixing plate 1 is formed with threaded holes. The connecting bolt 2 10 is threadedly fixed to the fixing plate 1. The rod of the connecting bolt 2 10 is located in the waist hole of the vertical section. Adjusting the tightness of the connection between the connecting bolt 2 10 and the fixing plate 1 can make the bracket 1 2 connected to the fixing plate 1 tight or slide, thereby adjusting the position of the bracket 1 2.

[0022] Both ends of bracket 2 3 are formed with threaded holes. Connecting bolt 1 9 is threadedly connected to bracket 2 3. Bracket 2 3 is connected and fastened to the horizontal section of bracket 2 through connecting bolt 1 9. The rod of connecting bolt 1 9 passes through the waist hole of the horizontal section. Adjusting the tightness of the connection between connecting bolt 1 9 and bracket 2 3 can make the connection between bracket 2 and bracket 2 3 tight or slide, thereby adjusting the position of bracket 2 3.

[0023] See Figure 1 The second bracket 3 is a cuboid structure and is inclined. A third bracket 7 is slidably connected to the middle of the end facing the pipe 6. One end of the third bracket 7 extends into the second bracket 3, and the other end is fixedly connected to the pressure wheel 5. The second bracket 3 has a sliding track that matches the third bracket 7. The end of the second bracket 3 away from the pipe 6 has a threaded hole, and an adjusting bolt 8 is threaded into the threaded hole. The end of the adjusting bolt 8 abuts against the third bracket 7. The adjusting bolt 8 is coaxial with the axis of the second bracket 3. By adjusting the distance that the adjusting bolt 8 extends into the second bracket 3, the degree of pressure between the pressure wheel 5 and the pipe 6 can be adjusted. Due to the support of the pipe 6, the third bracket 7 will not come out of the second bracket 3. Due to the friction between the inner wall of the sliding track and the third bracket 7, the third bracket 7 will not come out of the second bracket 3 even when there is no support from the pipe 6.

[0024] It should be noted that the connection between the fixing plate 1 and the bracket 2, the connection between the bracket 2 and the bracket 3, and the connection between the bracket 3 and the bracket can also be adjusted by electric, hydraulic, pneumatic or other power sources.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary welding fixture for stainless steel straight seam welded pipes, characterized in that, The device includes a clamping wheel and a connecting bracket. The clamping wheel is located on the outside of the pipe to be welded and can roll and press against the weld edge of the pipe. The clamping wheel is located on the outside of the pipe to be welded via the connecting bracket, which includes a second bracket and a first bracket. The second bracket can slide relative to the first bracket and is also connected and fastened to the first bracket via a first connecting bolt. The first bracket includes a vertical section and a horizontal section that are fixedly connected. The horizontal section has a waist hole. The second bracket has threaded holes at both ends that are adapted to the first connecting bolt. The rod of the first connecting bolt extends into the waist hole and slides with it.

2. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 1, characterized in that, The clamping roller can make the two weld edges of the pipe to be welded flush.

3. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 1, characterized in that, It also includes a connecting bracket, which is fixedly connected to the flat roller frame of the pipe welding equipment.

4. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 3, characterized in that, The clamping wheel is fixedly connected to the end of the bracket facing the pipe and can move toward or away from the pipe.

5. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 4, characterized in that, The support 2 is slidably connected to the support 3 at the end facing the pipe. The support 2 has a slide that matches the support 3. The end of the support 2 away from the pipe is threaded with an adjusting bolt. The end of the adjusting bolt extends into the slide and abuts against the support 3.

6. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 5, characterized in that, The connecting bracket also includes a fixing plate, which is fixedly connected to the vertical section of the bracket by connecting bolt two. The bracket one has a waist hole that matches the connecting bolt two.

7. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 1, characterized in that, The clamping roller is located upstream of the welding gun along the direction of pipe movement.

8. The auxiliary welding fixture for stainless steel straight seam welded pipe according to claim 5, characterized in that, The third bracket is set at an angle.

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