Anti-deformation metal pipe bending device
By using a limiting and anti-deformation limiting structure, and by adjusting the position of the clamping plate with a hydraulic telescopic rod and a screw, combined with the guidance of guide wheels, the problems of unstable clamping and high friction in metal tube bending devices are solved, achieving a stable clamping and low-friction bending effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN HUITONG AUTOMOBILE PIPE MFG CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-16
AI Technical Summary
Existing metal tube bending devices have gaps between the clamping block and the bending disc. After prolonged use, the gaps widen, affecting the bending effect. Furthermore, the metal tube experiences significant friction as it moves along the inner wall of the limiting groove, making it prone to loosening and deformation.
It adopts a limiting and fixing structure and an anti-deformation limiting structure. The hydraulic telescopic rod drives the clamping block to be tightly squeezed against the bending disc. The position of the clamping plate is adjusted by a screw, and the guide wheel reduces friction to achieve stable clamping and guidance.
It improves the clamping stability during the bending process of metal tubes, reduces friction, ensures bending effect, and avoids deformation.
Smart Images

Figure CN224359192U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of bending devices, specifically a metal tube bending device that prevents deformation. Background Technology
[0002] Metal pipes are tubular bodies made of metal. They are widely used in mechanical equipment and industrial production. During the processing of metal pipes, they need to be bent according to the actual use and installation conditions so that the bent pipes can meet the actual use requirements. At this time, metal pipe bending devices are needed for auxiliary operation.
[0003] However, in the actual bending process, the metal tube is usually fixed by clamping blocks and bending discs, and then bent as the bending discs rotate. However, this fixing method leaves gaps between the clamping blocks, the metal tube, and the bending discs. These gaps will increase after long-term use and wear, which will affect the bending effect. At the same time, the metal tube needs to be guided during bending to prevent deformation. Usually, a limiting block with a fitting groove is used for guidance. However, the movement of the metal tube on the inner wall of the fitting groove will increase friction and may cause the metal tube to loosen from the bending disc, which is very inconvenient. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides a deformation-resistant metal tube bending device. It solves the problem that in the actual bending process, the metal tube is usually fixed by clamping blocks and bending discs, and then bent when the bending discs rotate. However, this fixing method results in gaps between the clamping blocks, the metal tube, and the bending discs. Especially after long-term use and wear, these gaps will increase, thus affecting the bending effect. At the same time, the metal tube needs to be guided during bending to prevent deformation. Usually, a limiting block with a fitting groove is used for guidance. However, when the metal tube moves in the inner wall of the fitting groove, it increases friction and easily causes the metal tube and the bending disc to loosen, which is very inconvenient.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a deformation-resistant metal tube bending device, comprising a base, a drive motor fixedly connected to the outer surface of the base, a rotating block fixedly connected to the output end of the drive motor, a bending disc fixedly connected to the top of the rotating block, a bending groove formed on the outer surface of the bending disc, a limiting and fixing structure provided on the outer surface of the rotating block, and a deformation-resistant limiting structure provided on the top of the base. The limiting and fixing structure includes a connecting block, the outer surface of the connecting block being fixedly connected to the outer surface of the rotating block, a connecting seat fixedly connected to the outer surface of the connecting block, a first mounting groove formed on the top of the connecting seat, and a second mounting groove provided on the top of the deformation-resistant limiting structure. A second screw is rotatably mounted on the inner wall of the second mounting groove, one end of the second screw penetrating the inner wall of the base and fixedly connected to an operating block.
[0006] As a further embodiment of this utility model: a hydraulic telescopic rod is fixedly installed on one side of the outer surface of the connecting seat, a sliding block is fixedly connected to the output end of the hydraulic telescopic rod, and a clamping block is fixedly connected to the top of the outer surface of the sliding block.
[0007] As a further embodiment of this utility model: a limiting groove is provided on one side of the outer surface of the clamping block, an auxiliary groove is provided on the other side of the clamping block, a first screw is threadedly connected to the inner wall of the clamping block, and an operating round block is fixedly connected to one end of the first screw.
[0008] As a further embodiment of this utility model: one end of the first screw penetrates the inner wall of the clamping block and extends to the inner wall of the limiting groove; one end of the first screw is rotatably connected to a clamping plate; one side of the clamping plate is fixedly connected to a limiting rod; and the limiting rod is slidably disposed on the inner wall of the clamping block.
[0009] As a further embodiment of this utility model: the outer surface of the second screw is threadedly connected to a screw hole block, and a limiting block is fixedly connected to the top of the outer surface of the screw hole block, and a fitting groove is provided on one side of the limiting block.
[0010] As a further embodiment of this utility model: the inner wall of the fitting groove is provided with a wheel groove, the top and bottom of the inner wall of the wheel groove are rotatably connected with a wheel axle, and the outer surface of the wheel axle is fixedly connected with a guide wheel.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. This anti-deformation metal tube bending device, through the setting of a limiting and fixing structure, can drive the sliding block to move under the action of the hydraulic telescopic rod, which in turn can drive the clamping block to move, so that the clamping block can be squeezed and fixed with the bending disc. Then, under the action of the first screw, it can drive the clamping plate to move, so that the clamping plate can fit more tightly with the bending disc and the metal tube. When wear occurs, the clamping plate can still be moved by the first screw to adjust its position, thereby clamping the metal tube more stably.
[0013] 2. The anti-deformation metal tube bending device, by setting an anti-deformation limiting structure, can drive the screw hole block to move under the action of the second screw, thereby driving the limiting block and the fitting groove to fit with the metal tube. In the process of bending the metal tube, it can drive the metal tube to move, thereby allowing the metal tube to be guided under the action of the guide wheel, which can reduce the friction between the metal tube and the inner wall of the fitting groove. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the connector of this utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the base of this utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the limiting block of this utility model;
[0018] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle;
[0019] In the diagram: 1. Base; 2. Drive motor; 3. Rotating block; 4. Bending disc; 5. Bending groove; 6. Limiting and fixing structure; 61. Connecting block; 62. Connecting seat; 63. First mounting groove; 64. Hydraulic telescopic rod; 65. Sliding block; 66. Clamping block; 67. Limiting groove; 68. Auxiliary groove; 69. First screw; 610. Operating block; 611. Clamping plate; 612. Limiting rod; 7. Anti-deformation limiting structure; 71. Second mounting groove; 72. Second screw; 73. Operating block; 74. Screw hole block; 75. Limiting block; 76. Fitting groove; 77. Wheel groove; 78. Wheel axle; 79. Guide wheel. Detailed Implementation
[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0021] like Figure 1-4As shown, this utility model provides a technical solution: a deformation-resistant metal tube bending device, including a base 1, a drive motor 2 fixedly connected to the outer surface of the base 1, a rotating block 3 fixedly connected to the output end of the drive motor 2, a bending disc 4 fixedly connected to the top of the rotating block 3, a bending groove 5 formed on the outer surface of the bending disc 4, the rotating block 3 and the bending disc 4 are both existing technologies, a rectangular block is provided on the bending disc 4 for auxiliary contact with the clamping block 66, a groove is formed on the inner wall of the rectangular block that communicates with the bending groove 5, a limiting fixing structure 6 is provided on the outer surface of the rotating block 3, and an anti-deformation limiting structure 7 is provided on the top of the base 1. The limiting fixing structure 6 can fit the metal tube more tightly, resulting in a better clamping effect, and the anti-deformation limiting structure 7 can reduce the friction of the metal tube during movement.
[0022] The limiting and fixing structure 6 includes a connecting block 61. The outer surface of the connecting block 61 is fixedly connected to the outer surface of the rotating block 3. A connecting seat 62 is fixedly connected to the outer surface of the connecting block 61. A first mounting groove 63 is opened on the top of the connecting seat 62. A hydraulic telescopic rod 64 is fixedly installed on one side of the outer surface of the connecting seat 62. A sliding block 65 is fixedly connected to the output end of the hydraulic telescopic rod 64. The hydraulic telescopic rod 64 can drive the sliding block 65 to move, which in turn can drive the clamping block 66 to move, so that the clamping block 66 can fit against the bending disc 4. The clamping block 66 is fixedly connected to the top of the outer surface of the sliding block 65. A limiting groove 67 is opened on one side of the outer surface of the clamping block 66. The limiting groove 67 can cooperate with the clamping block 66, thereby providing auxiliary limiting and clamping for the metal tube.
[0023] An auxiliary groove 68 is provided on the other side of the clamping block 66. A first screw 69 is threadedly connected to the inner wall of the clamping block 66. An operating round block 610 is fixedly connected to one end of the first screw 69. One end of the first screw 69 passes through the inner wall of the clamping block 66 and extends to the inner wall of the limiting groove 67. The first screw 69 can drive the clamping plate 611 to move. Thus, after wear, the clamping plate 611 can be firmly clamped to the metal tube by the squeezing effect of the first screw 69. The clamping plate 611 is rotatably connected to one end of the first screw 69. A limiting rod 612 is fixedly connected to one side of the clamping plate 611. The limiting rod 612 is slidably disposed on the inner wall of the clamping block 66.
[0024] The anti-deformation limiting structure 7 includes a second mounting groove 71. A second screw 72 is rotatably mounted on the inner wall of the second mounting groove 71. One end of the second screw 72 passes through the inner wall of the base 1 and is fixedly connected to an operating block 73. A screw hole block 74 is threadedly connected to the outer surface of the second screw 72. The second screw 72 can drive the screw hole block 74 to move, thereby allowing the fitting groove 76 to fit and limit the outer surface of the metal tube, so that it can be guided during movement. A limiting block 75 is fixedly connected to the top of the outer surface of the screw hole block 74. A fitting groove 76 is opened on one side of the limiting block 75. A wheel groove 77 is opened on the inner wall of the fitting groove 76. A wheel axle 78 is rotatably connected to the top and bottom of the inner wall of the wheel groove 77. A guide wheel 79 is fixedly connected to the outer surface of the wheel axle 78. The guide wheel 79 can reduce the friction between the metal tube and the fitting groove 76 during the movement of the metal tube.
[0025] The working principle of this utility model is as follows: When in use, the metal tube is placed at the bending groove 5. At this time, the hydraulic telescopic rod 64 is activated, which drives the sliding block 65 to move, which in turn drives the clamping block 66 to move, so that the limiting groove 67 fits with the metal tube. Then, the first screw 69 is rotated, so that the clamping plate 611 can fit and fix the metal tube. Then, the second screw 72 is rotated, which drives the screw hole block 74 to move, which in turn drives the limiting block 75 to move, so that the fitting groove 76 fits with the metal tube. Then, the drive motor 2 is activated, so that the rotating block 3 can rotate, which in turn drives the bending disc 4 to rotate, which in turn drives the metal tube to bend. At the same time, when bending, the metal tube will be driven to move and slide on the inner wall of the fitting groove 76, which in turn drives the guide wheel 79 to rotate, thereby reducing friction.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A deformation-resistant metal tube bending device, comprising a base (1), characterized in that: A drive motor (2) is fixedly connected to the outer surface of the base (1). A rotating block (3) is fixedly connected to the output end of the drive motor (2). A bending disc (4) is fixedly connected to the top of the rotating block (3). A bending groove (5) is formed on the outer surface of the bending disc (4). A limiting and fixing structure (6) is provided on the outer surface of the rotating block (3). An anti-deformation limiting structure (7) is provided on the top of the base (1). The limiting and fixing structure (6) includes a connecting block (61). The outer surface of the connecting block (61) is fixedly connected to the outer surface of the rotating block (3). A connecting seat (62) is fixedly connected to the outer surface of the connecting block (61). A first mounting groove (63) is provided on the top of the connecting seat (62). The anti-deformation limiting structure (7) includes a second mounting groove (71). A second screw (72) is rotatably provided on the inner wall of the second mounting groove (71). One end of the second screw (72) penetrates the inner wall of the base (1) and is fixedly connected to an operating block (73).
2. The anti-deformation metal tube bending device according to claim 1, characterized in that: A hydraulic telescopic rod (64) is fixedly installed on one side of the outer surface of the connecting seat (62). A sliding block (65) is fixedly connected to the output end of the hydraulic telescopic rod (64). A clamping block (66) is fixedly connected to the top of the outer surface of the sliding block (65).
3. The anti-deformation metal tube bending device according to claim 2, characterized in that: A limiting groove (67) is provided on one side of the outer surface of the clamping block (66), and an auxiliary groove (68) is provided on the other side of the clamping block (66). A first screw (69) is threadedly connected to the inner wall of the clamping block (66), and an operating round block (610) is fixedly connected to one end of the first screw (69).
4. The anti-deformation metal tube bending device according to claim 3, characterized in that: One end of the first screw (69) penetrates the inner wall of the clamping block (66) and extends to the inner wall of the limiting groove (67). One end of the first screw (69) is rotatably connected to a clamping plate (611). A limiting rod (612) is fixedly connected to one side of the clamping plate (611). The limiting rod (612) is slidably disposed on the inner wall of the clamping block (66).
5. The anti-deformation metal tube bending device according to claim 1, characterized in that: The outer surface of the second screw (72) is threaded with a screw hole block (74), and a limit block (75) is fixedly connected to the top of the outer surface of the screw hole block (74). A fitting groove (76) is provided on one side of the limit block (75).
6. The deformation-resistant metal tube bending device according to claim 5, characterized in that: The inner wall of the fitting groove (76) is provided with a wheel groove (77), and the top and bottom of the inner wall of the wheel groove (77) are rotatably connected with a wheel axle (78), and a guide wheel (79) is fixedly connected to the outer surface of the wheel axle (78).