A PE pipe bending device
By combining the limiting and control components, high-precision and stable bending of PE pipes is achieved, solving the problem of large bending errors in existing devices and providing a simple and fast bending solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北四达塑料制品有限公司
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-29
AI Technical Summary
Existing PE pipe bending devices suffer from large shape errors and instability during the bending process, making it difficult to achieve high-precision bending.
The system employs a combination of limiting and control components, using sliding blocks and pressure blocks to limit and plastically bend the pipe, while utilizing telescopic electric cylinders and threaded rods to achieve precise bending control.
It achieves small bending shape error, good bending stability, excellent forming effect, and simple and convenient operation.
Smart Images

Figure CN224296568U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PE pipe bending technology, and in particular to a PE pipe bending device. Background Technology
[0002] PE pipe is a highly crystalline, non-polar thermoplastic resin. In its original state, it is milky white and, in thin sections, somewhat translucent. When used, the pipe may need to be bent, necessitating a pipe bending device. Current PE pipe processing typically uses a cover plate to limit bending at one end and a roller to bend the pipe at the other. During bending, the side closer to the roller tends to curl upwards due to the roller's rotation, and the resulting shape also exhibits significant errors. Therefore, there is an urgent need for a PE pipe bending device with minimal shape error and stable bending performance. Utility Model Content
[0003] The purpose of this invention is to provide a PE pipe bending device to solve the problems existing in the prior art.
[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a PE pipe bending device, including a workbench, on which two moving blocks are slidably connected, the two moving blocks being symmetrically arranged, and an arc-shaped groove for the moving blocks to slide in is provided on the workbench. A limiting component for limiting the pipe is installed on the moving blocks; a first pressure block is detachably connected to the workbench, and a second pressure block is slidably connected to the workbench, the first pressure block and the second pressure block being located on opposite sides of the pipe; a control component for controlling the sliding of the second pressure block and the moving blocks is installed on the workbench.
[0005] Preferably, the top surface of the first pressure block is a raised arc-shaped surface, and the bottom surface of the second pressure block is a recessed arc-shaped surface, with the two arc-shaped surfaces respectively corresponding to the two sides of the pipe.
[0006] Preferably, the control component includes a motion plate slidably connected to the top surface of the workbench, the bottom surface of the motion plate being detachably connected to the second pressure block, a telescopic electric cylinder being fixedly connected to the workbench, the telescopic end of the telescopic electric cylinder being fixedly connected to the top surface of the motion plate; two connecting rods are rotatably connected to the bottom surface of the motion plate, the two connecting rods being correspondingly arranged with the motion block, and the end of the connecting rod away from the motion plate being rotatably connected to the side of the motion block.
[0007] Preferably, the limiting component includes a receiving groove formed in the moving block, a limiting block slidably connected in the receiving groove, the pipe being located between the limiting block and the bottom wall of the receiving groove, a threaded rod being rotatably connected to the top wall of the limiting block, the top end of the threaded rod penetrating the moving block and threadedly engaging with the moving block, and a rotating nut being fixedly connected to the top end of the threaded rod.
[0008] Preferably, the bottom surface of the limiting block and the bottom wall of the receiving groove are respectively provided with arc grooves, and the pipe is located between the two arc grooves.
[0009] Preferably, a limiting groove is formed on the arc-shaped surface of the first pressing block and the arc-shaped surface of the second pressing block along its arc direction, and the cross-section of the limiting groove is a semi-circle adapted to the pipe material.
[0010] Preferably, the bottom surface of the moving block is fixedly connected to an arc-shaped slide bar that is adapted to the arc-shaped groove, and the arc-shaped slide bar slides within the arc-shaped groove.
[0011] This utility model discloses the following technical effects: It uses a limiting component to limit the pipe material, while a control component drives two moving blocks to slide along an arc-shaped groove. During this sliding process, the pipe material is bent. Simultaneously, the control component drives a second pressing block to move downwards, cooperating with the first pressing block to further limit and plasticize the pipe material, bending it to a specified degree of bending. This utility model has a simple structure, is easy to operate, can quickly bend pipes, and produces pipes with good stability and forming effect. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the pre-bending pipe device of this utility model.
[0014] Figure 2 This is a schematic diagram of the pipe bending device of this utility model.
[0015] Figure 3 This is a schematic diagram of the limiting component structure of this utility model;
[0016] The components are: 1. Workbench; 2. Moving block; 3. Arc groove; 4. First pressure block; 5. Second pressure block; 6. Moving plate; 7. Connecting rod; 8. Telescopic electric cylinder; 9. Receiving groove; 10. Limiting block; 11. Threaded rod; 12. Rotating nut; 13. Arc groove; 14. Limiting groove. Detailed Implementation
[0017] 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.
[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] Reference Figure 1-3 This utility model provides a PE pipe bending device, including a workbench 1. Two moving blocks 2 are slidably connected to the workbench 1, and the two moving blocks 2 are symmetrically arranged. An arc-shaped groove 3 is provided on the workbench 1 for the moving blocks 2 to slide. A limiting component for limiting the pipe is installed on the moving blocks 2. A first pressure block 4 is detachably connected to the workbench 1, and a second pressure block 5 is slidably connected to the workbench 1. The first pressure block 4 and the second pressure block 5 are respectively located on both sides of the pipe. A control component is installed on the workbench 1 to control the sliding of the second pressure block 5 and the moving blocks 2. The pipe is limited by the limiting component, and at the same time, the two moving blocks 2 are driven to slide along the arc-shaped groove 3 by the control component. During the sliding process, the pipe is bent. At the same time, the control component drives the second pressure block 5 to move downward and cooperate with the first pressure block 4 to further limit and plasticize the pipe, so that it is bent to a specified degree of bending.
[0020] The design is further optimized so that the top surface of the first pressure block 4 is a raised arc-shaped surface and the bottom surface of the second pressure block 5 is a recessed arc-shaped surface, with the two arc-shaped surfaces corresponding to the two sides of the pipe.
[0021] The scheme is further optimized. The control components include a motion plate 6 slidably connected to the top surface of the workbench 1, and a bottom surface of the motion plate 6 detachably connected to the second pressure block 5. A telescopic electric cylinder 8 is fixedly connected to the workbench 1, and the telescopic end of the telescopic electric cylinder 8 is fixedly connected to the top surface of the motion plate 6. Two connecting rods 7 are rotatably connected to the bottom surface of the motion plate 6, and the two connecting rods 7 are correspondingly set to the motion block 2. The end of the connecting rod 7 away from the motion plate 6 is rotatably connected to the side of the motion block 2. The telescopic electric cylinder 8 drives the motion plate 6 to move, thereby pushing the motion block 2 to slide along the arc groove 3 through the connecting rods 7. At the same time, the downward movement of the motion plate 6 can drive the second pressure block 5 to move downward, which facilitates its cooperation with the first pressure block 4.
[0022] The scheme is further optimized. The limiting component includes a receiving groove 9 opened in the moving block 2. A limiting block 10 is slidably connected in the receiving groove 9. The pipe is located between the limiting block 10 and the bottom wall of the receiving groove 9. A threaded rod 11 is rotatably connected to the top wall of the limiting block 10. The top end of the threaded rod 11 passes through the moving block 2 and is threadedly engaged with the moving block 2. A rotating nut 12 is fixedly connected to the top end of the threaded rod 11. By rotating the nut 12, the threaded rod 11 is rotated, which in turn causes the limiting block 10 to move downward. The limiting block 10 engages with the bottom surface of the receiving groove 9 to limit the pipe, facilitating the bending operation of the pipe by the moving block 2.
[0023] To further optimize the design, arc-shaped grooves 13 are respectively formed on the bottom surface of the limiting block 10 and the bottom wall of the receiving groove 9, with the pipe positioned between the two arc-shaped grooves 13. This facilitates better positioning of the pipe and prevents it from sliding horizontally between the limiting block 10 and the receiving groove 9.
[0024] To further optimize the design, limiting grooves 14 are formed along the arc direction on the arc surfaces of the first pressure block 4 and the second pressure block 5. The cross-section of the limiting grooves 14 is a semi-circle adapted to the pipe material. By engaging the two semi-circular limiting grooves 14 with the bent pipe, the bent pipe is further plasticized and stabilized at a specified angle.
[0025] In a further optimized design, the bottom surface of the moving block 2 is fixedly connected with an arc-shaped slider that is compatible with the arc-shaped groove 3, and the arc-shaped slider slides within the arc-shaped groove 3.
[0026] The design was further optimized by installing a heater on the bottom surface of workbench 1.
[0027] The working process of this utility model is as follows: When in use, the pipe to be bent is inserted into the two moving blocks 2, and then the rotating nut 12 is rotated. The rotating nut 12 drives the threaded rod 11 to rotate, which in turn drives the limiting block 10 to move downward, thereby cooperating with the bottom wall of the receiving groove 9 to limit the pipe. Then, the telescopic electric cylinder 8 is activated, which drives the moving plate 6 to move downward, and then pushes the two moving blocks 2 to slide along the arc groove 3 through the connecting rod 7. During the sliding process, the two moving blocks 2 deflect and bend the pipe. At the same time, the connecting plate 7 drives the second pressure block 5 to move downward during the downward movement, thereby cooperating with the first pressure block 4 to further plasticize the bent pipe.
[0028] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A PE pipe bending device, characterized in that: The device includes a workbench (1) on which two moving blocks (2) are slidably connected. The two moving blocks (2) are symmetrically arranged. An arc-shaped groove (3) is provided on the workbench (1) for the moving blocks (2) to slide. A limiting component for limiting the pipe is installed on the moving blocks (2). A first pressure block (4) is detachably connected to the workbench (1). A second pressure block (5) is slidably connected to the workbench (1). The first pressure block (4) and the second pressure block (5) are located on both sides of the pipe, respectively. A control component for controlling the sliding of the second pressure block (5) and the moving blocks (2) is installed on the workbench (1).
2. The PE pipe bending device according to claim 1, characterized in that: The top surface of the first pressure block (4) is a raised arc-shaped surface, and the bottom surface of the second pressure block (5) is a recessed arc-shaped surface. The two arc-shaped surfaces are respectively set to correspond to the two sides of the pipe.
3. The PE pipe bending device according to claim 1, characterized in that: The control component includes a motion plate (6) slidably connected to the top surface of the workbench (1), the bottom surface of the motion plate (6) being detachably connected to the second pressure block (5), a telescopic electric cylinder (8) being fixedly connected to the workbench (1), the telescopic end of the telescopic electric cylinder (8) being fixedly connected to the top surface of the motion plate (6); two connecting rods (7) are rotatably connected to the bottom surface of the motion plate (6), the two connecting rods (7) being correspondingly arranged with the motion block (2), and the end of the connecting rod (7) away from the motion plate (6) being rotatably connected to the side of the motion block (2).
4. A PE pipe bending device according to claim 1, characterized in that: The limiting component includes a receiving groove (9) opened in the moving block (2), a limiting block (10) is slidably connected in the receiving groove (9), the pipe is located between the limiting block (10) and the bottom wall of the receiving groove (9), a threaded rod (11) is rotatably connected to the top wall of the limiting block (10), the top end of the threaded rod (11) passes through the moving block (2) and is threadedly engaged with the moving block (2), and a rotating nut (12) is fixedly connected to the top end of the threaded rod (11).
5. A PE pipe bending device according to claim 4, characterized in that: The bottom surface of the limiting block (10) and the bottom wall of the receiving groove (9) are respectively provided with arc grooves (13), and the pipe is located between the two arc grooves (13).
6. A PE pipe bending device according to claim 2, characterized in that: Limiting grooves (14) are formed on the arc-shaped surfaces of the first pressure block (4) and the second pressure block (5) along their arc direction. The cross-section of the limiting grooves (14) is a semi-circle that is adapted to the pipe material.
7. A PE pipe bending device according to claim 1, characterized in that: The bottom surface of the moving block (2) is fixedly connected with an arc-shaped slide bar that is adapted to the arc-shaped groove (3), and the arc-shaped slide bar slides within the arc-shaped groove (3).