PE pipe bending equipment
By introducing heating and bending components into the PE pipe bending equipment, the bending problem caused by the high hardness of PE pipes at room temperature is solved, enabling precise and uniform heating and bending of PE pipes, and improving the efficiency of the equipment and the structural strength of the pipes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI WANFANG PIPE IND CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-10
AI Technical Summary
Existing PE pipe bending equipment lacks a heating device, resulting in high hardness of PE pipes at room temperature. Direct bending can easily lead to local stress concentration, causing wrinkles, cracks, and other phenomena, affecting the structural strength and service life of the pipe.
A PE pipe bending device was designed, comprising a base, a fixing frame, guide wheels, a heating component, and a bending component. The PE pipe is fixed by a positioning screw, the bending area is heated by the heating component, and the bending operation is performed by the bending component, ensuring that the PE pipe is bent in a softened state.
It enables precise and uniform heating and bending of PE pipes, avoiding local overheating or underheating, improving bending efficiency and quality, extending the service life of PE pipes, and meeting the needs of different engineering scenarios.
Smart Images
Figure CN224476569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending equipment technology, and in particular to a PE pipe bending device. Background Technology
[0002] In modern water supply and drainage, gas transmission and agricultural irrigation engineering fields, PE (polyethylene) pipes are widely used due to their advantages such as corrosion resistance, good flexibility and long service life.
[0003] However, existing PE pipe bending equipment generally lacks a heating device. PE pipe is a thermoplastic, and its hardness is relatively high at room temperature. Direct bending operations can easily lead to localized stress concentration in the pipe, resulting in wrinkles, cracks, and other phenomena, which seriously affect the structural strength and service life of the pipe. Utility Model Content
[0004] In view of the technical problem that existing PE pipe bending equipment generally lacks a heating device, this utility model provides a PE pipe bending device.
[0005] The technical solution adopted by this utility model is: a PE pipe bending device, including a base, a fixed frame fixedly connected to the base, a positioning screw threadedly connected to the fixed frame, a guide wheel rotatably connected to the base, and a heating component and a pipe bending component provided on the outside of the base.
[0006] A further feature of this invention is that the heating assembly includes a fixed pipe fixedly connected to the outside of the base and multiple sets of jet pipes fixedly connected to the outside of the fixed pipe, and a delivery pipe is fixedly connected to the outside of the fixed pipe.
[0007] A further feature of this invention is that the pipe bending assembly includes a rotating rod rotatably connected to the base, a rotating plate fixedly connected to the outside of the rotating rod, and a sliding sleeve detachably fixedly connected to the outside of the rotating plate.
[0008] The present invention is further configured such that a fixing frame is fixedly connected to the outside of the base, a motor is fixedly connected to the outside of the fixing frame, a threaded rod is rotatably connected to the outside of the fixing frame, a nut block is threadedly connected to the outside of the threaded rod, a rack is fixedly connected to the outside of the nut block, a gear is fixedly connected to the outside of the rotating rod, the gear meshes with the rack, and a guide rod is fixedly connected to the outside of the fixing frame, the guide rod passing through the nut block.
[0009] A further feature of this invention is that support legs are fixedly connected to all four sides of the bottom of the base.
[0010] A further feature of this invention is that the guide wheel has an arc-shaped groove on its outer surface.
[0011] A further feature of this invention is that at least one set of positioning screws is provided.
[0012] The beneficial effects of this utility model are as follows: In this utility model, after the PE pipe passes through the fixed frame and is fixed by the positioning screw, the bending area is heated by the heating component, and then the bending operation is performed by the pipe bending component. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the gear and rack in this utility model;
[0015] Figure 3 yes Figure 2 Enlarged structural diagram of region A in the middle;
[0016] Figure 4 This is a structural schematic diagram of the base in this utility model.
[0017] The diagram is marked as follows:
[0018] 1. Base; 2. Fixing frame; 3. Positioning screw; 4. Guide wheel; 5. Fixing pipe; 6. Jet pipe; 7. Conveying pipe; 8. Rotating rod; 9. Gear; 10. Rotating plate; 11. Sliding sleeve; 12. Fixing frame; 13. Motor; 14. Threaded rod; 15. Nut block; 16. Guide rod; 17. Rack. Detailed Implementation
[0019] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", 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 simplifying the description, 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.
[0020] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described below.
[0021] To address the problems existing in the background technology, this application proposes the following technical solution: a PE pipe bending device, including a base 1, with support legs fixedly connected to all four sides of the bottom of the base 1, a fixed frame 2 fixedly connected to the base 1, and a positioning screw 3 threadedly connected to the fixed frame 2, with at least one set of positioning screws 3. A guide wheel 4 is rotatably connected to the base 1, and the guide wheel 4 has an arc-shaped groove on its outer surface. A heating component and a pipe bending component are also provided on the outside of the base 1. The base 1 serves as the basic load-bearing structure of the entire bending device, and the support legs fixedly connected to all four sides of the bottom provide stable support for the device, ensuring that the device will not shake or shift during the PE pipe bending process, thereby ensuring the accuracy and safety of the bending operation. The fixed frame 2 fixedly connected to the base 1, together with the positioning screws 3, constitutes a positioning and fixing structure for the PE pipe. By tightening the positioning screws 3, the end of the screw can be made to contact the PE pipe, thereby firmly fixing the PE pipe within the fixed frame 2. This fixing method is easy to operate, and the position and tightness of the positioning screw 3 can be flexibly adjusted according to the diameter of the PE pipe to adapt to different specifications of pipes, so as to avoid the PE pipe from sliding or shifting during the bending process and affecting the bending effect.
[0022] The guide wheel 4, rotatably connected to the base 1, has an arc-shaped groove on its exterior that matches the outer diameter of the PE pipe, providing precise guidance during the bending process. When the PE pipe bends under the action of the bending assembly, the arc-shaped groove of the guide wheel 4 guides the PE pipe along a predetermined trajectory, preventing deformation such as twisting and wrinkling during bending. Simultaneously, the free-rotating nature of the guide wheel 4 effectively reduces friction between the PE pipe and the guide wheel 4, minimizing scratches and damage to the pipe surface caused by friction, thus ensuring the appearance quality and structural integrity of the PE pipe. Furthermore, the heating assembly and bending assembly on the exterior of the base 1 respectively perform the functions of heating and softening the PE pipe and bending it. Working together, they ensure the PE pipe is bent at a suitable temperature, improving bending efficiency and quality, and solving the problem of traditional equipment's difficulty in achieving precise bending and efficient operation.
[0023] In this embodiment, the heating assembly includes a fixed pipe 5 fixedly connected to the outside of the base 1 and multiple sets of jet pipes 6 fixedly connected to the outside of the fixed pipe 5. A conveying pipe 7 is fixedly connected to the outside of the fixed pipe 5, and the conveying pipe 7 is fixedly connected to the output end of a hot air blower located outside the environment. The heating assembly is designed to provide uniform and stable heating to the bending section of the PE pipe, making it easier to bend the PE pipe in a softened state. The fixed pipe 5, fixedly connected to the outside of the base 1, serves as the main channel for hot air transmission, stably delivering the hot air generated by the external hot air blower to each jet pipe 6. The multiple sets of jet pipes 6, evenly distributed outside the fixed pipe 5, can spray hot air onto the bending section of the PE pipe from different angles, ensuring uniform heating of the PE pipe surface. This multi-directional heating method avoids local overheating or underheating, ensuring a consistent temperature of the PE pipe throughout its circumference, thereby guaranteeing the uniform deformation of the PE pipe during bending and effectively preventing problems such as pipe cracking and uneven wall thickness caused by uneven heating.
[0024] The delivery pipe 7 is connected to an external hot air blower, providing a stable source of hot air for the heating components. By adjusting the wind speed and temperature parameters of the hot air blower, the temperature and flow rate of the hot air ejected from the jet pipe 6 can be precisely controlled to meet the heating needs of PE pipes with different diameters and wall thicknesses. For example, for PE pipes with larger diameters and thicker walls, the hot air temperature and flow rate can be appropriately increased, and the heating time extended to ensure that the pipe is fully softened; while for PE pipes with smaller diameters and thinner walls, the hot air temperature and flow rate can be reduced to avoid damage to the pipe due to overheating. The heating components ensure that the PE pipe reaches an ideal softened state before bending, greatly reducing the difficulty of bending, improving the success rate and quality of bending, and also reducing damage to the pipe caused by forced bending, extending the service life of the PE pipe, and meeting the strict requirements for PE pipe bending quality in different engineering scenarios.
[0025] In this embodiment, the pipe bending assembly includes a rotating rod 8 rotatably connected to the base 1, a rotating plate 10 fixedly connected to the outside of the rotating rod 8, and a sliding sleeve 11 detachably fixedly connected to the outside of the rotating plate 10. A connecting plate is fixedly connected to the top of the sliding sleeve 11, and the connecting plate is detachably fixedly connected to the rotating plate 10 by bolts. In practice, the sliding sleeve 11 can also be set as a semi-circular structure. The pipe bending assembly is the core part for realizing the bending and forming of PE pipes, and its structural design cleverly combines mechanical transmission and pipe fixing functions. The rotating rod 8 rotatably connected to the base 1 can convert the rotational motion of the motor 13 into the circumferential rotation of the rotating rod 8 through the meshing transmission of the gear 9 and the rack 17. The rotating plate 10 fixedly connected to the outside of the rotating rod 8 rotates synchronously under the drive of the rotating rod 8, thereby providing rotational power for the sliding sleeve 11. As a component that directly contacts the PE pipe, the sliding sleeve 11's function is to pull the PE pipe along the arcuate groove of the guide wheel 4 under the drive of the rotating plate 10. The sliding sleeve 11 and the rotating plate 10 are detachably fixedly connected by a connecting plate and bolts. This design offers great flexibility and practicality. On the one hand, when processing PE pipes of different diameters, the sliding sleeve 11 can be easily replaced with a suitable one without replacing or adjusting the entire pipe bending assembly, reducing the operating cost and maintenance difficulty of the equipment. On the other hand, the detachable structure facilitates the quick removal of the PE pipe after bending, improving production efficiency.
[0026] In practical applications, the semi-circular structure of the sliding sleeve 11 further optimizes the user experience of the pipe bending assembly. After the PE pipe is bent, the semi-circular sliding sleeve 11 eliminates the need to remove bolts; simply detach the sleeve from the PE pipe. This significantly reduces pipe removal time, making it particularly suitable for mass production scenarios. Furthermore, the contact surface between the sleeve 11 and the PE pipe undergoes special treatment, providing excellent wear resistance and anti-slip properties. This ensures that the pipe surface is not damaged during bending while providing sufficient friction to ensure the PE pipe accurately completes the bending action with the movement of the sleeve 11. Through precise mechanical transmission and flexible structural design, the pipe bending assembly achieves accurate bending of PE pipes, meeting the diverse needs of different projects for bending angles and curvatures, and improving the equipment's versatility and applicability.
[0027] In this embodiment, a fixing frame 12 is fixedly connected to the outside of the base 1, a motor 13 is fixedly connected to the outside of the fixing frame 12, a threaded rod 14 is rotatably connected to the outside of the fixing frame 12, a nut block 15 is threadedly connected to the outside of the threaded rod 14, a rack 17 is fixedly connected to the outside of the nut block 15, a gear 9 is fixedly connected to the outside of the rotating rod 8, the gear 9 meshes with the rack 17, and a guide rod 16 is fixedly connected to the outside of the fixing frame 12, passing through the nut block 15. This part of the structure constitutes the power transmission system of the pipe bending assembly, and its design principle is based on the helical transmission and gear 9 and rack 17 transmission in mechanical transmission. The fixing frame 12, as the support structure of the entire transmission system, is fixedly connected to the outside of the base 1, providing a stable mounting base for components such as the motor 13, threaded rod 14, and guide rod 16. The motor 13 on the fixing frame 12, as a power source, can output stable torque to drive the threaded rod 14 to rotate. The threaded rod 14 and the nut block 15 are connected by threads. When the threaded rod 14 rotates, the nut block 15 will move linearly along the axial direction of the threaded rod 14. The rack 17, which is fixedly connected to the outside of the nut block 15, moves with the linear movement of the nut block 15, thereby converting the linear movement of the nut block 15 into the linear movement of the rack 17.
[0028] The gear 9, externally fixed to the rotating rod 8, meshes with the rack 17. When the rack 17 moves, it drives the gear 9 to rotate, thereby causing the rotating rod 8 and the rotating plate 10 to rotate, thus achieving the bending operation of the PE pipe. In this transmission process, the guide rod 16 passes through the nut block 15 and plays a crucial guiding role. The guide rod 16 can restrict the movement direction of the nut block 15, making it only able to move in a straight line along the axis of the guide rod 16, preventing the nut block 15 from deviating or wobbling during movement, and ensuring the meshing accuracy and transmission stability between the rack 17 and the gear 9. This transmission method has the advantages of compact structure, accurate transmission ratio, and smooth movement. It can precisely control the rotation angle and speed of the rotating rod 8, thereby achieving precise adjustment of the bending angle and bending speed of the PE pipe. Whether it is a small-angle fine-tuning bend or a large-angle large-amplitude bend, this transmission system can provide stable and reliable power transmission, ensuring the accuracy and quality of PE pipe bending, while also reducing noise and vibration during equipment operation, improving the service life and working efficiency of the equipment.
[0029] The usage method of this embodiment is as follows:
[0030] The PE pipe is passed through the fixed frame 2, guide wheel 4, and sliding sleeve 11. Then, the PE pipe is fixed by the positioning screw 3. The hot air blower and motor 13 are then started. The motor 13 drives the threaded rod 14 to rotate, which drives the rack 17 to move through the nut block 15. The rack 17 drives the gear 9 to rotate, which drives the rotating rod 8 to rotate. The rotating rod 8 drives the rotating plate 10 to rotate. The rotating plate 10 pulls the PE pipe along the guide wheel 4 through the sliding sleeve 11 to achieve pipe bending. At the same time, the hot air blower outputs hot air, which is sprayed through the jet pipe 6 onto the bent part of the PE pipe, thereby achieving PE pipe bending. Finally, the sliding sleeve 11 is removed and the bent PE pipe is removed. In practice, the sliding sleeve 11 can also be set as a semi-circular structure, so that the PE pipe can be directly separated from the sliding sleeve 11.
[0031] 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 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.
[0032] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.
Claims
1. A PE pipe bending device, characterized in that, Includes a base (1), a fixed frame (2) is fixedly connected to the base (1), a positioning screw (3) is threadedly connected to the fixed frame (2), a guide wheel (4) is rotatably connected to the base (1), and a heating component and a bending component are also provided on the outside of the base (1).
2. The PE pipe bending equipment according to claim 1, characterized in that, The heating assembly includes a fixed tube (5) fixedly connected to the outside of the base (1) and multiple sets of jet pipes (6) fixedly connected to the outside of the fixed tube (5). A delivery pipe (7) is fixedly connected to the outside of the fixed tube (5).
3. The PE pipe bending equipment according to claim 1, characterized in that, The pipe bending assembly includes a rotating rod (8) rotatably connected to the base (1), a rotating plate (10) fixedly connected to the outside of the rotating rod (8), and a sliding sleeve (11) detachably fixedly connected to the outside of the rotating plate (10).
4. The PE pipe bending equipment according to claim 3, characterized in that, The base (1) is externally fixedly connected to a fixing frame (12), the fixing frame (12) is externally fixedly connected to a motor (13), the fixing frame (12) is externally rotatably connected to a threaded rod (14), the threaded rod (14) is externally threadedly connected to a nut block (15), the nut block (15) is externally fixedly connected to a rack (17), the rotating rod (8) is externally fixedly connected to a gear (9), the gear (9) meshes with the rack (17), the fixing frame (12) is externally fixedly connected to a guide rod (16), and the guide rod (16) passes through the nut block (15).
5. A PE pipe bending device according to claim 1, characterized in that, The base (1) is fixedly connected to support legs on all four sides of its bottom.
6. A PE pipe bending device according to claim 1, characterized in that, The guide wheel (4) has an arc-shaped groove on its outside.
7. A PE pipe bending device according to claim 1, characterized in that, The positioning screw (3) is provided in at least one set.