A steel pipe bending machine
By designing an adjustable steel pipe bending machine, the problem that existing technologies can only process steel pipes of a single diameter has been solved. This enables the bending of steel pipes of multiple diameters and the processing of complex shapes, improving the versatility of the equipment and reducing the economic burden.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TIANXING IRON & STEEL CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-03
AI Technical Summary
Existing steel pipe bending machines can only process steel pipes of a single diameter, which leads to increased economic burden and excessively high production efficiency requirements.
An adjustable steel pipe bending machine was designed. Through threaded connection and sliding structure, it can adapt to steel pipes of different diameters, realize the bending processing of multi-diameter steel pipes, and support multi-segment bending and processing of complex shapes.
It enables bending of steel pipes of different diameters, improves the versatility and practicality of the equipment, reduces the economic burden, and adapts to various processing needs.
Smart Images

Figure CN224444214U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of steel pipe bending machines, specifically a steel pipe bending machine. Background Technology
[0002] A steel pipe bending machine is a specialized piece of equipment used for bending metal pipes. It achieves bending deformation of the pipe through precise control. It is widely used in construction, manufacturing, automotive, and aerospace industries. Steel pipe bending machines primarily employ a hydraulic system (some high-end models are equipped with a pure electric servo system). Pressure is provided by hydraulic cylinders, causing the metal pipe to bend on a bending die. The bending angle and curvature can be precisely controlled by adjusting parameters of the control system (such as slide depth and pressure tonnage). Some high-end models also support multi-segment bending and complex shape bending to meet high-precision engineering requirements.
[0003] Steel pipe bending machines are driven by hydraulic or electric systems, enabling precise control of bending angles and shapes, and supporting multi-segment bending and complex shaping. They are widely used in the construction industry (such as stair railings and balustrades), manufacturing industry (such as automobile exhaust pipes and furniture components), automotive industry (such as chassis structural components), and aerospace industry, and are key equipment for industrial pipe forming.
[0004] However, due to equipment limitations, steel pipe bending machines can typically only process steel pipes of a single diameter. Once the variety of steel pipe diameters increases, it becomes necessary to purchase a large number of steel pipe bending machines of different diameters, which not only increases the economic burden but also places excessively high demands on production efficiency. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a steel pipe bending machine that can bend steel pipes of different diameters, thereby reducing economic burden.
[0006] To achieve the above objectives, the present invention provides the following technical solution: it includes an operating table body, an auxiliary bending device fixedly connected to the upper surface of the operating table body, a circular hole opened on the upper surface of the operating table body, the circular hole being slidably connected to the bending disc body, a support plate fixedly connected to the lower part of the bending disc body, a rotating shaft connected to the lower surface of the support plate, a rotating block slidably connected to the center of the bending disc body, a rotating rod fixedly connected to the lower surface of the rotating block, and a rotating mechanism fixedly connected below the rotating rod.
[0007] Furthermore, the rotating shaft has threads, and a rotating handle is slidably connected to the lower end of the rotating shaft.
[0008] Furthermore, a sliding rod is fixedly connected to the lower part of the main body of the operating table, and a fixed block is fixedly connected to the lower part of the sliding rod. A rotating hole is opened in the center of the fixed block, and there is a thread in the rotating hole that matches the rotating shaft.
[0009] Furthermore, the pallet consists of a pallet body and a sliding cylinder. The sliding cylinder is fixed to the four corners of the pallet body, and a sliding hole is opened in the center of the sliding cylinder, which cooperates with the sliding rod.
[0010] Furthermore, a crossbar is fixedly connected to the lower end of the main body of the control panel, and a rotating mechanism is fixedly connected to the center of the crossbar.
[0011] Furthermore, the bending disc body consists of a turntable and a bearing. The surface around the turntable is provided with grooves, and a square hole is provided in the center of the turntable. A hoop is fixed to the side of the turntable, and the square hole cooperates with the rotating block. The turntable is fixed to the outer ring of the bearing, and the inner ring of the bearing is fixed to the support plate.
[0012] Compared with the prior art, this utility model has the following advantages: This utility model can be adapted to bending steel pipes of different diameters. When facing threads of different diameters, different diameter bending holes can be selected to bend the steel pipes. At the same time, the bending disc can be replaced by disassembly. This not only solves the problem that the steel pipe bending machine in the prior art can only process steel pipes of a single diameter, but also improves the versatility and practicality of the equipment, reduces the economic burden, and has broad market application prospects. Attached Figure Description
[0013] Figure 1 This is a top view of the three-dimensional structure of the present invention;
[0014] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;
[0015] Figure 3 For this Figure 2 A magnified three-dimensional structural diagram of A in the middle;
[0016] Figure 4 For this Figure 2 A magnified three-dimensional structural diagram of B in the diagram;
[0017] Figure 5 A three-dimensional structural diagram of the main body of the control panel;
[0018] Figure 6 This is a three-dimensional structural diagram of the present invention in cross-section;
[0019] Figure 7 A three-dimensional structural diagram of the main body of the bending disc;
[0020] Figure 8 This is a three-dimensional structural diagram of the rotating linkage.
[0021] In the diagram: 1. Turntable; 101. Groove; 102. Square hole; 103. Hoop; 2. Bearing; 201. Bearing outer ring; 202. Bearing inner ring; 3. Bending disc body; 4. Auxiliary bending device; 5. Operating table body; 501. Crossbar; 502. Round hole; 503. Sliding rod; 6. Support plate; 601. Support plate body; 602. Sliding cylinder; 6021. Sliding hole; 7. Fixing block; 701. Rotating hole; 8. Rotating shaft; 9. Rotating handle; 10. Rotating mechanism; 11. Rotating rod; 12. Rotating block. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] like Figures 1 to 8 As shown, the device includes an operating table body 5, with an auxiliary bending device 4 fixedly connected to the upper surface of the operating table body 5. The operating table body 5 has a circular hole 502 on its upper surface, which is slidably connected to the bending disc body 3. A support plate 6 is fixedly connected to the lower part of the bending disc body 3, and a rotating shaft 8 is connected to the lower surface of the support plate 6. A rotating block 12 is slidably connected to the center of the bending disc body 3, and a rotating rod 11 is fixedly connected to the lower surface of the rotating block 12. A rotating mechanism 10 is fixedly connected to the lower part of the rotating rod 11.
[0024] like Figures 1 to 8 As shown, the rotating shaft 8 has threads, and a rotating handle 9 is slidably connected to the lower end of the rotating shaft 8. In use, rotating the rotating handle 9 adjusts the position of the rotating shaft 8 through the threads.
[0025] like Figures 1 to 8 As shown, a sliding rod 503 is fixedly connected to the lower part of the main body 5 of the operating table, and a fixed block 7 is fixedly connected to the lower part of the sliding rod 503. A rotating hole 701 is opened in the center of the fixed block 7, and there is a thread in the rotating hole 701 that matches the rotating shaft 8.
[0026] like Figures 1 to 8 As shown, the pallet 6 consists of a pallet body 601 and a sliding cylinder 602. The sliding cylinder 602 is fixed to the four corners of the pallet body 601. A sliding hole 6021 is provided in the center of the sliding cylinder 602, which cooperates with the sliding rod 503. The sliding rod 503 remains stationary while the bending disc body 3 slides up and down by sliding the pallet body 601.
[0027] like Figures 1 to 8 As shown, a crossbar 501 is fixedly connected to the lower end of the main body 5 of the operating table, and a rotating mechanism 10 is fixedly connected to the center of the crossbar 501.
[0028] like Figures 1 to 8As shown, the bending disc body 3 is composed of a turntable 1 and a bearing 2. The turntable 1 has a groove 101 on its surrounding surface and a square hole 102 in the center. A hoop 103 is fixed to the side of the turntable 1. The square hole 102 cooperates with the rotating block 12. The turntable 1 is fixed to the outer ring 201 of the bearing, and the inner ring 202 of the bearing is fixed to the support plate 6.
[0029] In use, the operator places the steel pipe to be bent on the auxiliary bending device 4, which initially positions and fixes the pipe. Then, the operator rotates the rotating shaft 8 by adjusting the rotating handle 9, causing the support plate 6 and the bending disc body 3 to slide within the circular hole 502, thereby adjusting the position of the bending disc body 3 to accommodate steel pipes of different lengths. The steel pipe is then passed through the hoop 103 to secure it. The rotating mechanism 10 drives the bending disc body 3 to rotate, thus completing the bending process of the steel pipe.
[0030] Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A steel pipe bending machine comprising an operating table main body (5) on the upper surface of which an auxiliary bending device (4) is fixedly connected, characterized in that, The upper surface of the main body of the operating table (5) is provided with a circular hole (502), which is slidably connected to the bending disc body (3). A support plate (6) is fixedly connected to the lower part of the bending disc body (3), and a rotating shaft (8) is connected to the lower surface of the support plate (6). A rotating block (12) is slidably connected to the center of the bending disc body (3), and a rotating rod (11) is fixedly connected to the lower surface of the rotating block (12). A rotating mechanism (10) is fixedly connected to the lower part of the rotating rod (11).
2. A pipe and tube bending machine according to claim 1, characterized in that The rotating shaft (8) has threads, and a rotating handle (9) is slidably connected to the lower end of the rotating shaft (8).
3. A pipe and tube bending machine according to claim 1 or 2, characterised in that A sliding rod (503) is fixedly connected to the lower part of the main body (5) of the operating table. A fixing block (7) is fixedly connected to the lower part of the sliding rod (503). A rotating hole (701) is opened in the center of the fixing block (7). The rotating hole (701) has a thread that matches the rotating shaft (8).
4. A pipe and tube bending machine according to claim 3, characterised in that The pallet (6) consists of a pallet body (601) and a sliding cylinder (602). The sliding cylinder (602) is fixed to the four corners of the pallet body (601). A sliding hole (6021) is provided in the center of the sliding cylinder (602), and the sliding hole cooperates with the sliding rod (503).
5. A pipe and tube bending machine according to claim 1, wherein The lower end of the main body (5) of the operating table is fixedly connected to a crossbar (501), and a rotating mechanism (10) is fixedly connected to the center of the crossbar (501).
6. A pipe and tube bending machine according to claim 4, wherein The bending disc body (3) consists of a turntable (1) and a bearing (2). The turntable (1) has a groove (101) on its surrounding surface and a square hole (102) in the center. A hoop (103) is fixed to the side of the turntable (1). The square hole (102) cooperates with the rotating block (12). The turntable (1) is fixed to the outer ring (201) of the bearing, and the inner ring (202) of the bearing is fixed to the support plate (6).