A multi-roller linkage forming device for bending processing of a steel pipe
By introducing an adjustable roll position adjustment system into the steel pipe bending processing device, the problem of equipment replacement under different bending angle requirements is solved, achieving rapid response and efficient processing, and improving the flexibility and precision of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 远方实业(天津)有限公司
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-02
AI Technical Summary
Existing multi-roll linkage forming devices for steel pipe bending require frequent replacement of equipment and rolls when facing different bending angle requirements, resulting in fluctuations in processing accuracy and low equipment utilization, making it difficult to meet the rapid response requirements of modern flexible manufacturing.
By designing an adjustable transverse and longitudinal roll position adjustment system, the rolls can be quickly disassembled and repositioned using telescopic rods and hydraulic rods, avoiding equipment replacement. The telescopic rods drive the connecting shaft to move and adjust the roll position, while the hydraulic rods unlock the rolls for replacement.
It enables rapid adjustment of bending angle and roll position according to demand without changing equipment, improving the efficiency and practicality of the equipment, reducing mechanical adjustment errors, and improving the processing efficiency of small-batch, multi-variety production.
Smart Images
Figure CN224309374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe bending processing, and in particular to a multi-roll linkage forming device for steel pipe bending processing. Background Technology
[0002] The multi-roll linkage forming device for steel pipe bending is a specialized piece of equipment that bends straight steel pipes into workpieces with specific curvatures through the coordinated rotation and pressure of multiple sets of rolls. It consists of a roll system, a drive system, a support frame, and a control system. Using this device, high-precision bending can be achieved by applying uniform pressure from multiple rolls, with the error controllable within ±0.1mm. Efficiency is improved through continuous automated processing, increasing production capacity by 50%-100% compared to traditional processes, while reducing material loss and equipment damage. It is adaptable to various pipe materials and complex shape requirements and is widely used in fields such as construction, new energy, and aerospace, solving the problems of low precision, poor efficiency, and weak adaptability of traditional bending processes.
[0003] The existing multi-roll linkage forming device for steel pipe bending operates on the principle of using a servo motor or hydraulic system to drive the active rollers to rotate, which in turn moves the steel pipe along the feed direction. Multiple sets of rollers are arranged according to a preset curvature. By adjusting the roller spacing and angle, a controllable bending torque is applied to the steel pipe, causing it to undergo plastic deformation under uniform pressure from multiple rollers during its forward movement, thus forming the target curvature. At the same time, the CNC system monitors and adjusts the roller position, feed speed, and pressure parameters in real time to compensate for material springback. Support rollers are used to fix the steel pipe and prevent it from shifting or wrinkling, thereby achieving continuous automated high-precision bending forming. It is suitable for processing steel pipes of different diameters and materials.
[0004] However, the use of multi-roll linkage forming equipment for steel pipe bending has not completely solved the problem of needing to change equipment to process steel pipes with different bending angle requirements. Although the existing equipment can achieve basic curvature changes by adjusting the roller spacing, when faced with complex composite angles such as S-shapes and U-shapes, or extreme differences between large and small angles, it is still necessary to stop the machine, disassemble and replace specific roller groups or molds. This process is not only time-consuming and labor-intensive, but also causes fluctuations in processing accuracy due to mechanical adjustment errors. Especially in the scenario of small-batch, multi-variety production, frequent model changes seriously reduce equipment utilization, greatly diminishing the advantages of efficient continuous processing and making it difficult to match the demand for rapid response in modern flexible manufacturing. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a multi-roll linkage forming device for steel pipe bending, which aims to improve the problem of needing to change different equipment to process steel pipes with different bending angle requirements during equipment use.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-roll linkage forming device for bending steel pipes, comprising a base plate, side plates slidably connected to both sides of the base plate, a moving component disposed inside each side plate, multiple connecting shafts slidably connected inside each side plate, a bending component disposed between the side plates, a connecting shaft slidably connected inside each side plate, multiple sliding grooves slidably on one side of each side plate, and a sliding groove slidably on one side of each side plate;
[0007] Each of the moving components includes multiple telescopic rods 1 and 2. One end of each telescopic rod 1 is fixedly connected to the inside of the side plate, and the output end of each telescopic rod 1 is connected to the outer wall of the connecting shaft 1. The bottom end of each telescopic rod 2 is fixedly connected to the inside of the side plate, and the output end of each telescopic rod 2 is connected to the outer wall of the connecting shaft 2.
[0008] As a further description of the above technical solution:
[0009] The bending assembly includes multiple transverse rolls, multiple extrusion grooves, and a longitudinal roll. Each transverse roll is slidably connected at both ends to a connecting shaft one. Each extrusion groove is formed on the outer wall of the transverse roll and the longitudinal roll. Both ends of the longitudinal roll are slidably connected to a connecting shaft two.
[0010] As a further description of the above technical solution:
[0011] Each of the connecting shafts is fixedly connected to one end with a fixing post, and each fixing post is slidably connected with multiple fixing pins.
[0012] As a further description of the above technical solution:
[0013] Each of the fixed pins is fixedly connected to a limiting plate on its outer wall, and the outer wall of each limiting plate is slidably connected to the inside of the fixed column.
[0014] As a further description of the above technical solution:
[0015] Each of the fixed posts is provided with multiple springs inside, one end of each spring is fixedly connected to the inside of the fixed post, and the other end of each spring is fixedly connected to one side of the fixed pin.
[0016] As a further description of the above technical solution:
[0017] A hydraulic rod is fixedly connected inside the base plate, and a connecting rod is fixedly connected to the output end of the hydraulic rod.
[0018] As a further description of the above technical solution:
[0019] Each of the connecting rods has a connecting plate fixedly connected to one end, and each of the connecting plates has one side fixedly connected to one side of a side plate.
[0020] As a further description of the above technical solution:
[0021] The fixing pins are arranged in a symmetrical array inside the fixing columns, and the outer wall of each fixing column is slidably connected to the inside of the transverse roll and the longitudinal roll.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the first telescopic rod is activated to move the first connecting shaft, thereby adjusting the position of the transverse roller to the required position. Then, the second telescopic rod is activated to move the second connecting shaft, thereby adjusting the position of the longitudinal roller to the required height. This achieves the effect of changing the positions of the transverse and longitudinal rollers to perform bending work at different angles according to the needs during equipment use. This avoids the problem of needing to change different equipment to process steel pipes with different bending angle requirements during equipment use, thereby improving the efficiency of the multi-roll linkage forming device for steel pipe bending processing.
[0024] 2. In this utility model, the hydraulic rod is first activated to push the connecting rod outward, causing the connecting plate at its front end to push the side plate outward. This causes the inner walls of the transverse and longitudinal rollers to press against the fixing pins and retract into the fixing columns, thereby unlocking the transverse and longitudinal rollers. This allows for easy removal and replacement of the rollers during equipment use, avoiding the need for complex operations to remove and replace the rollers, thus improving the practicality of the multi-roll linkage forming device for steel pipe bending. Attached Figure Description
[0025] Figure 1 This is a perspective view of a multi-roller linkage forming device for bending steel pipes according to the present invention.
[0026] Figure 2 This is a schematic diagram of the internal structure of the side plate of a multi-roller linkage forming device for bending steel pipes proposed in this utility model.
[0027] Figure 3 This is an exploded view of the bottom plate structure of a multi-roller linkage forming device for bending steel pipes proposed in this utility model.
[0028] Figure 4 for Figure 3 A magnified view of the structure at point A in the middle;
[0029] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.
[0030] Legend:
[0031] 1. Base plate; 2. Side plate; 3. Telescopic rod one; 4. Connecting shaft one; 5. Transverse roller; 6. Extrusion groove; 7. Telescopic rod two; 8. Connecting shaft two; 9. Longitudinal roller; 10. Sliding groove one; 11. Sliding groove two; 12. Fixed column; 13. Fixed pin; 14. Limiting plate; 15. Spring; 16. Hydraulic rod; 17. Connecting rod; 18. Connecting plate. Detailed Implementation
[0032] 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.
[0033] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a multi-roll linkage forming device for bending steel pipes, comprising a base plate 1, side plates 2 slidably connected to both sides of the base plate 1 for fixing bending components, a moving component inside each side plate 2 for controlling the position of the bending components, multiple connecting shafts 4 slidably connected inside each side plate 2 for fixing transverse rollers 5, a bending component between the side plates 2 for bending steel pipes, a connecting shaft 8 slidably connected inside each side plate 2 for fixing longitudinal rollers 9, multiple sliding grooves 10 on one side of each side plate 2 for accommodating connecting shafts 4, and a sliding groove 11 on one side of each side plate 2 for accommodating connecting shafts 8.
[0034] Each moving assembly includes multiple telescopic rods 3 and 7. One end of each telescopic rod 3 is fixedly connected to the inside of the side plate 2 to control the position of the transverse rollers 5. The output end of each telescopic rod 3 is connected to the outer wall of the connecting shaft 4. The bottom end of each telescopic rod 7 is fixedly connected to the inside of the side plate 2 to control the position of the longitudinal rollers 9. The output end of each telescopic rod 7 is connected to the outer wall of the connecting shaft 8. The bending assembly includes multiple transverse rollers 5, multiple extrusion grooves 6, and longitudinal rollers 9. Both ends of each transverse roller 5 are slidably connected between the connecting shaft 4 for bending steel pipes. Each extrusion groove 6 is opened on the outer wall of the transverse rollers 5 and the longitudinal rollers 9 for accommodating steel pipes. Both ends of the longitudinal rollers 9 are slidably connected between the connecting shaft 8 for bending steel pipes.
[0035] Specifically, firstly, telescopic rod 3 is activated. Accompanied by the low hum of the hydraulic system, telescopic rod 3 extends slowly at a stable and precise speed, driving connecting shaft 4 to move smoothly along the precision slide rail. During the movement, the transverse roller 5 gradually adjusts to the ideal position that meets the processing requirements as the connecting shaft 4 moves. Then, telescopic rod 7 is activated again through the control system. It starts operating with the same steady and orderly rhythm, driving connecting shaft 8 to rise and fall vertically. The longitudinal roller 9 also slowly rises and steadily reaches the required precise height, making full preparations for the subsequent steel pipe bending process.
[0036] Reference Figures 3-5 Each connecting shaft 4 and connecting shaft 8 has a fixed post 12 fixedly connected to one end for connecting the transverse roll 5 and the longitudinal roll 9. Multiple fixing pins 13 are slidably connected inside each fixing post 12 for fixing the transverse roll 5 and the longitudinal roll 9. A limit plate 14 is fixedly connected to the outer wall of each fixing pin 13 to limit its movement range. The outer wall of each limit plate 14 is slidably connected inside the fixing post 12. Multiple springs 15 are installed inside each fixing post 12 to provide elastic force to the fixing pins 13. One end of each spring 15 is fixedly connected to the fixing post. Inside the fixed column 12, the other end of each spring 15 is fixedly connected to one side of the fixed pin 13. A hydraulic rod 16 is fixedly connected inside the base plate 1 to drive the side plate 2 to move. A connecting rod 17 is fixedly connected to the output end of the hydraulic rod 16 for connecting the connecting plate 18. One end of each connecting rod 17 is fixedly connected to the connecting plate 18 for connecting the side plate 2. One side of each connecting plate 18 is fixedly connected to one side of the side plate 2. The fixed pins 13 are arranged in a symmetrical array inside the fixed column 12. The outer wall of each fixed column 12 is slidably connected to the inside of the transverse roller 5 and the longitudinal roller 9.
[0037] Specifically, the hydraulic rod 16 is first activated to push the connecting rod 17 with a stable and powerful thrust. Driven by the hydraulic rod 16, the connecting rod 17 slowly slides outward along the high-precision slide rail. The connecting plate 18 at its front end firmly abuts against the side plate 2. As the hydraulic rod 16 continues to exert force, the side plate 2 begins to move outward slowly. At this time, under the action of this force, the inner walls of the transverse roller 5 and the longitudinal roller 9 gradually squeeze the fixing pin 13. After being stressed, the fixing pin 13 slowly retracts into the fixing column 12. In an instant, the transverse roller 5 and the longitudinal roller 9, which were originally firmly fixed, are finally successfully unlocked, preparing for the subsequent adjustment and replacement process. The whole process is completed in one go, showing the ingenuity and efficiency of the mechanical structure.
[0038] Working Principle: In the process of using the multi-roll linkage forming device for steel pipe bending, when it is necessary to adjust the positions of the transverse roll 5 and the longitudinal roll 9 to change the bending angle of the steel pipe, first activate the telescopic rod 3 to move the connecting shaft 4, thereby adjusting the position of the transverse roll 5 to the required position. Then activate the telescopic rod 7 to move the connecting shaft 8, thereby adjusting the position of the longitudinal roll 9 to the required height. When the transverse roll 5 or the longitudinal roll 9 needs to be replaced after prolonged use, first activate the hydraulic rod 16 to push the connecting rod 17 outward, causing the connecting plate 18 at its front end to push the side plate 2 outward. This causes the inner walls of the transverse roll 5 and the longitudinal roll 9 to press against the fixing pin 13 and retract into the fixing column 12, thereby unlocking the transverse roll 5 and the longitudinal roll 9. Then, the new transverse roll 5 or the longitudinal roll 9 is reinstalled, thus completing the replacement of the transverse roll 5 or the longitudinal roll 9.
[0039] 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 multi-roller linkage forming device for bending processing of a steel pipe, comprising a base plate (1), characterized in that: The base plate (1) is slidably connected to both sides of the side plate (2), each side plate (2) is provided with a moving component, each side plate (2) is slidably connected with multiple connecting shafts (4), the side plates (2) are provided with a bending component, each side plate (2) is slidably connected with a connecting shaft (8), each side plate (2) has multiple sliding grooves (10) on one side, and each side plate (2) has a sliding groove (11) on one side. Each of the moving components includes multiple telescopic rods one (3) and two telescopic rods two (7). One end of each telescopic rod one (3) is fixedly connected to the inside of the side plate (2). The output end of each telescopic rod one (3) is connected to the outer wall of the connecting shaft one (4). The bottom end of each telescopic rod two (7) is fixedly connected to the inside of the side plate (2). The output end of each telescopic rod two (7) is connected to the outer wall of the connecting shaft two (8).
2. The multi-roll linkage forming device for bending processing of a steel pipe according to claim 1, characterized in that: The bending assembly includes multiple transverse rolls (5), multiple extrusion grooves (6) and longitudinal rolls (9). Each transverse roll (5) is slidably connected at both ends between connecting shaft one (4). Each extrusion groove (6) is opened on the outer wall of the transverse roll (5) and the longitudinal roll (9). Both ends of the longitudinal roll (9) are slidably connected between connecting shaft two (8).
3. The multi-roll linkage forming device for steel pipe bending according to claim 1, characterized in that: Each of the connecting shafts 1 (4) and 2 (8) is fixedly connected to one end of a fixing post (12), and each fixing post (12) is slidably connected to a plurality of fixing pins (13).
4. The multi-roller linkage forming device for steel pipe bending according to claim 3, characterized in that: Each of the fixed pins (13) is fixedly connected to a limiting plate (14) on its outer wall, and the outer wall of each limiting plate (14) is slidably connected inside the fixed column (12).
5. The multi-roller linkage forming device for steel pipe bending according to claim 3, characterized in that: Each of the fixed posts (12) is provided with multiple springs (15) inside. One end of each spring (15) is fixedly connected to the inside of the fixed post (12), and the other end of each spring (15) is fixedly connected to one side of the fixed pin (13).
6. The multi-roller linkage forming device for bending steel pipes according to claim 1, characterized in that: A hydraulic rod (16) is fixedly connected inside the base plate (1), and a connecting rod (17) is fixedly connected to the output end of the hydraulic rod (16).
7. The multi-roller linkage forming device for bending steel pipes according to claim 6, characterized in that: Each of the connecting rods (17) is fixedly connected to a connecting plate (18) at one end, and each of the connecting plates (18) is fixedly connected to one side of the side plate (2).
8. The multi-roller linkage forming device for bending steel pipes according to claim 3, characterized in that: The fixing pins (13) are arranged in a symmetrical array inside the fixing column (12), and the outer wall of each fixing column (12) is slidably connected to the inside of the transverse roll (5) and the longitudinal roll (9).