Device for treating external craters at welding position of rectangular steel pipe

Abstract

The utility model discloses a rectangular steel pipe welding position outer crator treatment device, which relates to the technical field of steel pipe processing, and is characterized by comprising a bottom plate, two first support frames are fixedly mounted on the upper end surface of the bottom plate, and conveying rollers are rotatably mounted on the upper end surfaces of the two first support frames through mounting mechanisms; a second supporting frame is fixedly installed on the upper end face of the bottom plate, and through the arrangement of a second threaded rod, a second limiting rod, moving blocks, a positioning roller and other assemblies, the second threaded rod can drive the two moving blocks to move through cooperation with the second limiting rod when rotating; in this way, the two moving blocks can drive the positioning frames on the same side to move through cooperation of the connecting rods, so that the two positioning frames can center and clamp the rectangular steel pipe through the positioning rollers rotationally installed, and the rectangular steel pipe is always located at the center position of the two conveying rollers in the conveying and feeding process; and the influence on the cutting effect of the cutter on external craters due to displacement is avoided.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, specifically to a device for treating external weld scars at the weld joint of a rectangular steel pipe. Background Technology

[0002] Rectangular steel pipe is a hollow long strip of steel, also known as flat pipe, flat square pipe or square flat pipe. When the bending and torsional strength are the same, rectangular steel pipe is lighter in weight, so it is widely used in the manufacture of mechanical parts and engineering structures.

[0003] Welding is a common connection method in the production of rectangular steel pipes. However, after welding, external weld scars are left on the surface of the steel pipe. These weld scars not only affect the appearance quality of the rectangular steel pipe, making its surface uneven, but may also cause problems in subsequent use. For example, in scenarios where surface coating is required, it is difficult for the coating to adhere evenly to the weld scars, reducing the protective effect of the coating. In the existing technology, most external weld scar treatment devices use a cutting tool to cut them. However, during the cutting process of the weld scars on the rectangular steel pipe, there is a lack of components to position the rectangular steel pipe, which makes the rectangular steel pipe prone to displacement during the feeding process. This affects the cutting effect of the cutting tool on the external weld scars, reduces the treatment effect of the external weld scars on the rectangular steel pipe, and is not practical enough. Therefore, it is necessary to redesign an external weld scar treatment device for the welded joint of rectangular steel pipes to address the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a device for treating external weld scars at the weld joints of rectangular steel pipes. This device solves the problem that traditional external weld scar treatment devices lack components for positioning the rectangular steel pipe during the process of cutting the weld scars, which causes the rectangular steel pipe to easily shift during the feeding process, thereby affecting the cutting effect of the tool on the external weld scars and reducing the treatment effect of the external weld scars on the rectangular steel pipe.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for treating external weld scars at the welded joint of a rectangular steel pipe, comprising a base plate, two first support frames fixedly installed on the upper surface of the base plate, each of the two first support frames having a conveying roller rotatably mounted on its upper surface via an installation mechanism; a second support frame fixedly installed on the upper surface of the base plate, the bottom wall of the second support frame being fixedly connected to a pressing frame via a lifting mechanism, a pressing roller rotatably mounted inside the pressing frame, a first motor fixedly installed on the outer wall of the pressing frame and connected to the rotating shaft of the pressing roller; a support plate fixedly installed on the upper surface of the base plate, two second hydraulic cylinders fixedly installed on the bottom wall of the support plate, each of the two second hydraulic cylinders having a movable frame fixedly connected to its telescopic end, and a first screw rotatably mounted inside each of the two movable frames. Both movable frames have handwheels fixedly installed on their outer walls, connected to the first screws on the same side. The outer walls of both first screws are threaded with movable sleeves via limiting mechanisms. The bottom walls of both movable sleeves are fixedly installed with fixed frames via fixed blocks. Cutters are fixedly installed inside both fixed frames. A second screw is rotatably installed on the upper surface of the base plate via a movable groove. A second motor connected to the second screw is fixedly installed on the outer wall of the base plate. Two movable blocks are threaded onto the outer wall of the second screw. A second limiting rod is fixedly installed inside the movable groove, sliding through the two movable blocks. Positioning frames are fixedly connected to the upper surfaces of both movable blocks via a connecting mechanism. Positioning rollers are rotatably installed inside both positioning frames. A collection box is slidably installed on the upper surface of the base plate.

[0008] Preferably, the mounting mechanism includes a mounting frame fixedly mounted on the upper surface of the first support frame, and the conveying roller is rotatably mounted inside the mounting frame.

[0009] Preferably, the lifting mechanism includes a first hydraulic cylinder fixedly installed on the bottom wall of the second support frame, and the telescopic end of the first hydraulic cylinder is fixedly connected to the upper end face of the lower pressure frame.

[0010] Preferably, the limiting mechanism includes a first limiting rod fixedly installed inside the movable frame, the first limiting rod sliding through the movable sleeve.

[0011] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the upper surface of the movable block, and the end of the connecting rod is fixedly connected to the outer wall of the positioning frame.

[0012] Preferably, a plurality of anti-slip protrusions are fixedly installed on the outer wall of the lower pressure roller, and each of the anti-slip protrusions is made of rubber.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a device for treating external weld scars at the weld joint of a rectangular steel pipe, which has the following beneficial effects:

[0015] This invention incorporates components such as a second screw, a second limiting rod, moving blocks, and positioning rollers. When the second screw rotates, it can move two moving blocks in conjunction with the second limiting rod. This allows the two moving blocks to move positioning frames on the same side through the connection of connecting rods. Consequently, the two positioning frames, equipped with positioning rollers, can center and clamp the rectangular steel pipe, ensuring that the rectangular steel pipe remains centered between the two conveying rollers during transport and loading, thus preventing displacement that could affect the cutting effect of the cutting tool on the external weld scars. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rectangular steel pipe weld scar treatment device proposed in this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the vertical section structure;

[0018] Figure 3 This is a side view of the external weld scar treatment device for rectangular steel pipe weld joints proposed in this utility model.

[0019] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0020] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0021] In the picture:

[0022] 1. Base plate, 2. First support frame, 3. Mounting frame, 4. Conveying roller, 5. Second support frame, 6. First hydraulic cylinder, 7. Pressing frame, 8. Pressing roller, 9. Anti-slip protrusion, 10. First motor, 11. Support plate, 12. Second hydraulic cylinder, 13. Moving frame, 14. First screw, 15. Handwheel, 16. First limit rod, 17. Moving sleeve, 18. Fixed frame, 19. Cutting tool, 20. Second screw, 21. Second motor, 22. Second limit rod, 23. Moving block, 24. Connecting rod, 25. Positioning frame, 26. Positioning roller, 27. Collection box. Detailed Implementation

[0023] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] This utility model provides a technical solution for a device for treating external weld scars at the weld joint of rectangular steel pipes:

[0025] Please see Figures 1-5 A device for treating external weld scars at the weld joint of a rectangular steel pipe includes a base plate 1. Two first support frames 2 are fixedly installed on the upper surface of the base plate 1. Conveyor rollers 4 are rotatably mounted on the upper surface of each of the two first support frames 2 via an installation mechanism. A second support frame 5 is fixedly installed on the upper surface of the base plate 1. A lower pressure frame 7 is fixedly connected to the bottom wall of the second support frame 5 via a lifting mechanism. A lower pressure roller 8 is rotatably mounted inside the lower pressure frame 7. A first motor 10 connected to the rotating shaft of the lower pressure roller 8 is fixedly installed on the outer wall of the lower pressure frame 7. A support plate 11 is fixedly installed on the upper surface of the base plate 1. Two second hydraulic cylinders 12 are fixedly installed on the bottom wall of the support plate 11. A movable frame 13 is fixedly connected to the telescopic ends of each of the two second hydraulic cylinders 12. A first screw 14 is rotatably mounted inside each of the two movable frames 13. A handwheel 15 connected to the first screw 14 on the same side is fixedly installed on the outer wall of each of the two movable frames 13. The outer walls of the two first screws 14 are connected to a limit... The positioning mechanism is threaded with movable sleeves 17. The bottom walls of both movable sleeves 17 are fixedly mounted with fixed frames 18 via fixed blocks. The inside of each fixed frame 18 is fixedly mounted with a cutter 19. The upper end face of the base plate 1 is rotatably mounted with a second screw 20 via a movable groove. The second screw 20 is a bidirectional screw. The outer wall of the base plate 1 is fixedly mounted with a second motor 21 connected to the second screw 20. The outer wall of the second screw 20 is threaded with two movable blocks 23. The inside of the movable groove is fixedly mounted with a second limiting rod 22. The second limiting rod 22 slides through the two movable blocks 23 and can limit the movement of the two movable blocks 23, so that the two movable blocks 23 can only move axially along the outer wall of the second screw 20. The upper end face of each movable block 23 is fixedly connected with a positioning frame 25 via a connecting mechanism. The inside of each positioning frame 25 is rotatably mounted with a positioning roller 26. The upper end face of the base plate 1 is slidably mounted with a collection box 27.

[0026] Furthermore, the installation mechanism includes a mounting frame 3 fixedly installed on the upper surface of the first support frame 2, and a conveying roller 4 rotatably installed inside the mounting frame 3.

[0027] Furthermore, the lifting mechanism includes a first hydraulic cylinder 6 fixedly installed on the bottom wall of the second support frame 5, and the telescopic end of the first hydraulic cylinder 6 is fixedly connected to the upper end face of the lower pressure frame 7.

[0028] Furthermore, the limiting mechanism includes a first limiting rod 16 fixedly installed inside the movable frame 13. The first limiting rod 16 slides through the movable sleeve 17 and can limit the movable sleeve 17 so that the movable sleeve 17 can only move axially along the outer wall of the first screw 14.

[0029] Furthermore, the connecting mechanism includes a connecting rod 24 fixedly installed on the upper surface of the movable block 23, and the end of the connecting rod 24 is fixedly connected to the outer wall of the positioning frame 25.

[0030] Furthermore, multiple anti-slip protrusions 9 are fixedly installed on the outer wall of the lower pressure roller 8. Each anti-slip protrusion 9 is made of rubber. Rubber material has good elasticity and softness, which allows it to form a closer contact between the surface and the object, thereby increasing friction and improving the coefficient of friction.

[0031] In practical use, the working principle of this utility model is as follows:

[0032] The rectangular steel pipe can be placed above the conveyor roller 4 on the same side as the lower pressure roller 8. Then, the first hydraulic cylinder 6 can drive the lower pressure roller 8 to move downward through the lower pressure frame 7. At this time, the lower pressure roller 8 can approach the conveyor roller 4 on the same side and press down and clamp the rectangular steel pipe through multiple anti-slip protrusions 9. Then, the first motor 10 can drive the lower pressure roller 8 to rotate. The lower pressure roller 8 then clamps and feeds the rectangular steel pipe through the cooperation of the anti-slip protrusions 9 and the conveyor roller 4. When the rectangular steel pipe moves to below the two cutters 19, the two second hydraulic cylinders 12 can drive the moving frame 13 on the same side to move downward respectively. This allows the two moving frames 13 to drive the cutter 19 on the same side to move downward respectively, thereby achieving fine adjustment of the vertical height of the two cutters 19.

[0033] Simultaneously, two handwheels 15 can be rotated to drive the first screw 14 on the same side to rotate. The two first screws 14 can drive the moving sleeve 17 on the same side to move through the cooperation of the first limit rod 16. This allows for fine adjustment of the front and rear positions of the two cutters 19, so that the two cutters 19 can adapt to the positional changes of the outer weld. As the rectangular steel pipe moves continuously, the two cutters 19 can cut the outer weld. During the feeding process of the rectangular steel pipe, the second motor 21 can drive the second screw 20 to rotate. When the second screw 20 rotates, it can move through the... The second limiting rod 22 drives the two moving blocks 23 to move. This allows the two moving blocks 23 to drive the positioning frame 25 on the same side to move through the connecting rod 24. The two positioning frames 25 can then center and clamp the rectangular steel pipe by rotating the positioning roller 26. This ensures that the rectangular steel pipe remains in the center of the two conveying rollers 4 during the transport and loading process, preventing displacement that could affect the cutting effect of the cutter 19 on the external weld scars. During the cutting process, the collection box 27 can collect the waste material cut by the two cutters 19 for subsequent processing.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A device for treating external weld scars at the weld joint of a rectangular steel pipe, comprising a base plate (1), characterized in that, Two first support frames (2) are fixedly installed on the upper surface of the base plate (1). A conveyor roller (4) is fixedly mounted on the upper surface of each of the two first support frames (2) via an installation mechanism. A second support frame (5) is fixedly installed on the upper surface of the base plate (1). A lower pressure frame (7) is fixedly connected to the bottom wall of the second support frame (5) via a lifting mechanism. A lower pressure roller (8) is rotatably installed inside the lower pressure frame (7). A first motor (10) connected to the rotating shaft of the lower pressure roller (8) is fixedly installed on the outer wall of the lower pressure frame (7). A support plate (11) is fixedly installed on the upper surface of the base plate (1). Two second hydraulic cylinders (12) are fixedly installed on the bottom wall of the support plate (11). A moving frame (13) is fixedly connected to the telescopic end of each of the two second hydraulic cylinders (12). A first screw (14) is rotatably installed inside each of the two moving frames (13). A hand connected to the first screw (14) on the same side is fixedly installed on the outer wall of each of the two moving frames (13). The wheel (15) has a movable sleeve (17) threadedly installed on the outer wall of each of the two first screws (14) through a limiting mechanism. The bottom wall of each of the two movable sleeves (17) is fixedly installed with a fixed frame (18) through a fixed block. The two fixed frames (18) are fixedly installed with a cutter (19) inside. The upper end face of the base plate (1) is rotatably installed with a second screw (20) through a movable groove. The outer wall of the base plate (1) is fixedly installed with a second motor (21) connected to the second screw (20). The outer wall of the second screw (20) is threadedly installed with two movable blocks (23). The movable groove is fixedly installed with a second limiting rod (22). The second limiting rod (22) slides through the two movable blocks (23). The upper end face of each of the two movable blocks (23) is fixedly connected with a positioning frame (25) through a connecting mechanism. The two positioning frames (25) are rotatably installed with a positioning roller (26) inside. The upper end face of the base plate (1) is slidably installed with a collection box (27).

2. The rectangular steel pipe welding portion outer weld scar processing apparatus according to claim 1, characterized by The installation mechanism includes an installation frame (3) fixedly installed on the upper surface of the first support frame (2), and the conveying roller (4) is rotatably installed inside the installation frame (3).

3. The rectangular steel pipe welding portion outer weld bead processing apparatus according to claim 2, characterized by The lifting mechanism includes a first hydraulic cylinder (6) fixedly installed on the bottom wall of the second support frame (5), and the telescopic end of the first hydraulic cylinder (6) is fixedly connected to the upper end face of the lower pressure frame (7).

4. The rectangular steel pipe welding portion outer weld bead processing apparatus according to claim 3, characterized by The limiting mechanism includes a first limiting rod (16) fixedly installed inside the movable frame (13), and the first limiting rod (16) slides through the movable sleeve (17).

5. The apparatus for treating the outer welding scar of a rectangular steel pipe welding joint according to claim 4, characterized in that, The connecting mechanism includes a connecting rod (24) fixedly installed on the upper surface of the movable block (23), and the end of the connecting rod (24) is fixedly connected to the outer wall of the positioning frame (25).

6. The rectangular steel pipe welding portion outer weld bead processing apparatus according to claim 5, characterized by The outer wall of the lower pressure roller (8) is fixedly equipped with multiple anti-slip protrusions (9), each of which is made of rubber.

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