Bending device for steel pipe

Abstract

The utility model relates to the technical field of pipe fitting processing, and discloses a steel pipe bender which comprises a base, a first motor is fixedly connected to the bottom of the base, a rotating column is fixedly connected to the driving end of the first motor, and a top plate is fixedly connected to the side, away from the first motor, of the rotating column. A driving assembly is arranged on the other side of the top plate, a sliding block is rotationally connected to one side of the driving assembly, one base is fixedly connected to the bottom of the sliding block, a plurality of limiting blocks are fixedly connected to the inner sides of the bases, and limiting columns are fixedly connected to one sides of the multiple limiting blocks; the outer walls of the multiple limiting columns are all sleeved with springs. According to the device, efficient adaptation to steel pipes of different specifications is achieved, when the second motor structure operates, stable driving force is generated to drive the sliding block to precisely slide on the supporting plate, then the base is adjusted to a proper position, and after the base is positioned, the push plate is driven by the pressure of the steel pipes to push the linkage column.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, and in particular to a bending tool for steel pipes. Background Technology

[0002] As an important engineering material, steel pipes are widely used in many fields such as construction, machinery manufacturing, automobile industry, aerospace, and petrochemicals. In practical applications, in order to meet different structural design and functional requirements, steel pipes often need to be bent into various shapes and angles, such as scaffolding in construction, conveying pipelines in machinery manufacturing, exhaust pipes and frame components in automobiles, and hydraulic pipelines in aerospace. This makes steel pipe bending an important process in steel pipe processing.

[0003] In the steel pipe bending operation, one end of the steel pipe is firmly fixed in the groove or slot of the main mold. When the equipment is started, the main mold begins to rotate. The pipe part that is fixed on the main mold will rotate along with it due to the tight connection with the main mold. The rest of the part that is in the limit track cannot rotate due to the track restriction and can only move in a straight line. In this relative movement process, the steel pipe is gradually bent into the required arc, and the bending process is completed.

[0004] While existing steel pipe benders have indeed played a positive role in steel pipe bending operations, significantly improving bending efficiency and quality, their limitations have gradually become apparent in actual operation. Due to the wide variety of steel pipe specifications, with differences in pipe diameter and wall thickness, existing single clamping devices are difficult to adapt to different specifications of steel pipes. When bending steel pipes of different specifications is required, it is necessary to frequently change the clamping device. Each change involves multiple steps such as disassembly, installation, and debugging, which is cumbersome and time-consuming, greatly reducing overall bending efficiency, increasing production costs, and affecting the continuity of production schedule. Therefore, a steel pipe bender is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bending device for steel pipes, aiming to improve the problem that the single clamping device in the prior art is difficult to adapt to steel pipes of different specifications.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bending device for steel pipes includes a base, a motor fixedly connected to the bottom of the base, a rotating column fixedly connected to the drive end of the motor, a top plate fixedly connected to the side of the rotating column away from the motor, a drive assembly provided on the other side of the top plate, a slider rotatably connected to one side of the drive assembly, a base fixedly connected to the bottom of the slider, a plurality of limiting blocks fixedly connected to the inner side of the base, a limiting post fixedly connected to one side of each of the limiting blocks, a spring sleeved on the outer wall of each of the limiting posts, a push plate slidably connected to the outer wall of each of the limiting posts, a connecting post fixedly connected to the outer wall of each of the push plates, a plurality of connecting rods rotatably connected to the outer wall of the connecting post, a clamping plate rotatably connected to the side of two connecting rods that are close to each other, and a straightening assembly provided on one side of the base.

[0008] As a further description of the above technical solution:

[0009] The corrective assembly includes a support platform, one side of which is fixedly connected to the outer wall of the base, a plurality of corrective rollers are fixedly connected to the top of the support platform, a hydraulic cylinder is fixedly connected inside the support platform, and a sliding plate is fixedly connected to the other side of the hydraulic cylinder.

[0010] As a further description of the above technical solution:

[0011] The slide plate slides inside the support platform, and a cover plate is fixedly connected to the top of the plurality of straightening rollers. Three straightening rollers are fixedly connected to the top of the slide plate, and the tops of the three straightening rollers slide on the bottom of the cover plate.

[0012] As a further description of the above technical solution:

[0013] The driving assembly includes a second motor, which is fixedly connected inside the top plate. A support rod is fixedly connected to the driving end of the second motor. A pull rod is rotatably connected to the side of the support rod away from the second motor, and the other side of the pull rod is rotatably connected to the top of the slider.

[0014] As a further description of the above technical solution:

[0015] A support plate is fixedly connected to the inside of the top plate, and the inner wall of the slider slides on the outer wall of the support plate.

[0016] As a further description of the above technical solution:

[0017] A support column is fixedly connected to the top of the base, and the outer wall of the rotating column rotates on the inner wall of the support column.

[0018] As a further description of the above technical solution:

[0019] One side of the spring contacts one side of the limiting block, and the other side of the spring contacts one side of the push plate;

[0020] As a further description of the above technical solution:

[0021] The bottom of another base is fixedly connected to the top of the base, and one side of the clamp slides on the outer wall of the linkage column.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, efficient adaptation to steel pipes of different specifications is achieved. When the motor structure is running, it generates a stable driving force, which drives the slider to slide precisely on the support plate, thereby adjusting the base to a suitable position. After the base is positioned, the push plate is driven by the pressure of the steel pipe to push the linkage column, which in turn drives the clamping plate movement structure. This structure can flexibly change the clamping distance to ensure that steel pipes of different diameters can be firmly clamped, greatly improving the versatility of the equipment.

[0024] 2. In this utility model, the coordinated design of the hydraulic cylinder and the sliding plate brings convenience to the straightening operation of steel pipes. The hydraulic cylinder, as a power source, outputs a stable hydraulic thrust, which pushes the sliding plate to slide smoothly inside the support. The movement of the sliding plate causes multiple straightening rollers on one side to make corresponding displacements, thereby flexibly adjusting the distance between multiple straightening rollers on both sides. This design can meet the straightening requirements of steel pipes of different specifications before bending, ensuring that all types of steel pipes can be fully straightened and improving the accuracy of subsequent bending operations. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a steel pipe bending device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a motor for a steel pipe bending machine proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a hydraulic cylinder for a steel pipe bending device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the clamping plate of a steel pipe bending device proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Motor 1; 3. Rotating column; 4. Top plate; 5. Motor 2; 6. Support rod; 7. Tie rod; 8. Slider; 9. Support plate; 10. Base; 11. Limiting block; 12. Limiting column; 13. Spring; 14. Push plate; 15. Linking column; 16. Connecting rod; 17. Clamping plate; 18. Support platform; 19. Straightening roller; 20. Cover plate; 21. Hydraulic cylinder; 22. Slide plate; 23. Support column. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a steel pipe bending device, comprising a base 1, which provides support. A motor 2 is fixedly connected to the bottom of the base 1, serving as the main driving force for bending. A rotating column 3 is fixedly connected to the drive end of the motor 2. A top plate 4 is fixedly connected to the side of the rotating column 3 away from the motor 2, allowing the top plate 4 to rotate. A driving assembly is provided on the other side of the top plate 4. A slider 8 is rotatably connected to one side of the driving assembly. One of the bases 10 is fixedly connected to the bottom of the slider 8, supporting the entire internal structure. Multiple limiting blocks 11 are fixedly connected to the inner side of the base 10. Each limiting block 11 is fixedly connected to a limiting post 12 on one side. Each limiting post 12 is fitted with a spring 13 on its outer wall, so that the spring 13 will not change position due to elasticity. Each limiting post 12 is slidably connected to a push plate 14. Each push plate 14 is fixedly connected to a connecting post 15 on its outer wall, so that the connecting post 15 is subjected to force evenly. Each connecting post 15 is rotatably connected to a connecting rod 16 on its outer wall. Each connecting rod 16 is rotatably connected to a clamping plate 17 on its adjacent side, so that the clamping of the clamping plate 17 is more stable. A correction component is provided on one side of the base 1.

[0033] Reference Figure 3 The straightening assembly includes a support platform 18, which supports the entire straightening assembly. One side of the support platform 18 is fixedly connected to the outer wall of the base 1. Multiple straightening rollers 19 are fixedly connected to the top of the support platform 18. The multiple straightening rollers 19 cooperate with each other to straighten the steel pipe. A hydraulic cylinder 21 is fixedly connected inside the support platform 18. A sliding plate 22 is fixedly connected to the other side of the hydraulic cylinder 21.

[0034] Reference Figures 2 to 3The slide plate 22 slides on the inner side of the support platform 18. A cover plate 20 is fixedly connected to the top of multiple straightening rollers 19. Three straightening rollers 19 are fixedly connected to the top of the slide plate 22, and the tops of the three straightening rollers 19 slide on the bottom of the cover plate 20, allowing three of the multiple straightening rollers 19 to slide on the bottom of the cover plate 20. The drive assembly includes a second motor 5, which is fixedly connected inside the top plate 4. A support rod 6 is fixedly connected to the drive end of the second motor 5, allowing the driving force of the second motor 5 to be transmitted. A pull rod 7 is rotatably connected to the side of the support rod 6 away from the second motor 5, allowing the driving force of the second motor 5 to be transmitted again. The other side of the pull rod 7 is rotatably connected to the top of the slide block 8. The inner side of the top plate 4... A support plate 9 is fixedly connected to the base 1. The inner wall of the slider 8 slides on the outer wall of the support plate 9, so that the slider 8 can drive one of the bases 10 to adjust its position. A support column 23 is fixedly connected to the top of the base 1. The outer wall of the rotating column 3 rotates on the inner wall of the support column 23, so that the steel pipe is clamped and bent by the outer wall of the support column 23. One side of the spring 13 touches one side of the limiting block 11, and the other side of the spring 13 touches one side of the push plate 14, so that the spring 13 can interact with each other when it undergoes elastic deformation. The bottom of the other base 10 is fixedly connected to the top of the base 1. One side of the clamping plate 17 slides on the outer wall of the linkage column 15. The directions of the two bases 10 are opposite to each other.

[0035] Working principle: When bending of steel pipes is required, the steel pipe is first placed into the inlet of the bearing platform 18. Due to the operation of multiple straightening rollers 19, the slight bend of the steel pipe is straightened and pushed into the next bending step. When steel pipes of different specifications are placed into the inlet of the bearing platform 18, the hydraulic cylinder 21 can push the sliding plate 22 to adjust the distance inside the bearing platform 18, thereby increasing the distance between the multiple straightening rollers 19 on both sides, thus straightening steel pipes of different specifications. When the push plate 14 contacts the steel pipe, it will move towards the base 10 according to the different specifications of the steel pipe, causing the connecting column 15 to pull the multiple connecting rods 16 on both sides to perform a closing motion, thereby pulling two on each side. The clamping plates 17 move in the same direction to clamp the steel pipe. When the steel pipe leaves the push plate 14, the spring 13 is elastic, causing the connecting column 15 to push multiple connecting rods 16 on both sides to open, causing the two clamping plates 17 on each side to move in opposite directions, waiting for the next steel pipe to be placed. When it is necessary to bend the steel pipe to different lengths, the motor 25 is turned on to drive the support rod 6, thereby adjusting the slider 8 to a suitable position on the support plate 9. After the clamping plates 17 at the bottom of the slider 8 and the clamping plates 17 at the top of the base 1 fix the steel pipe, the motor 2 is turned on to rotate the top plate 4. Due to the presence of the support column 23, the steel pipe bending operation is completed.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bending tool for steel pipes, comprising a base (1), characterized in that: A motor (2) is fixedly connected to the bottom of the base (1). A rotating column (3) is fixedly connected to the drive end of the motor (2). A top plate (4) is fixedly connected to the side of the rotating column (3) away from the motor (2). A driving assembly is provided on the other side of the top plate (4). A slider (8) is rotatably connected to one side of the driving assembly. One of the bases (10) is fixedly connected to the bottom of the slider (8). Multiple limiting blocks (11) are fixedly connected to the inner side of the base (10). One side of each limiting block (11) is fixedly connected to a limiting post (12), and the outer walls of each of the limiting posts (12) are fitted with springs (13). The outer walls of each of the limiting posts (12) are slidably connected to push plates (14), and the outer walls of each of the push plates (14) are fixedly connected to linkage posts (15). The outer walls of the linkage posts (15) are rotatably connected to multiple connecting rods (16), and the sides of two connecting rods (16) that are close to each other are rotatably connected to clamps (17). A correction component is provided on one side of the base (1).

2. A bending tool for steel pipes according to claim 1, characterized in that: The correction assembly includes a support (18), one side of which is fixedly connected to the outer wall of the base (1), and a plurality of correction rollers (19) are fixedly connected to the top of the support (18). A hydraulic cylinder (21) is fixedly connected inside the support (18), and a slide plate (22) is fixedly connected to the other side of the hydraulic cylinder (21).

3. A bending tool for steel pipes according to claim 2, characterized in that: The slide plate (22) slides inside the support (18), and a cover plate (20) is fixedly connected to the top of the plurality of straightening rollers (19). Three straightening rollers (19) are fixedly connected to the top of the slide plate (22), and the tops of the three straightening rollers (19) slide at the bottom of the cover plate (20).

4. A bending tool for steel pipes according to claim 1, characterized in that: The drive assembly includes a second motor (5), which is fixedly connected inside the top plate (4). A support rod (6) is fixedly connected to the drive end of the second motor (5). A pull rod (7) is rotatably connected to the side of the support rod (6) away from the second motor (5). The other side of the pull rod (7) is rotatably connected to the top of the slider (8).

5. A bending tool for steel pipes according to claim 1, characterized in that: The top plate (4) is fixedly connected to a support plate (9), and the inner wall of the slider (8) slides on the outer wall of the support plate (9).

6. A bending tool for steel pipes according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a support column (23), and the outer wall of the rotating column (3) rotates on the inner wall of the support column (23).

7. A bending tool for steel pipes according to claim 2, characterized in that: One side of the spring (13) is in contact with one side of the limiting block (11), and the other side of the spring (13) is in contact with one side of the push plate (14).

8. A bending tool for steel pipes according to claim 1, characterized in that: The bottom of another base (10) is fixedly connected to the top of the base (1), and one side of the clamp (17) slides on the outer wall of the linkage column (15).

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