A pe pipe bending device
By using an electric heating tube heating system and a controller for precise temperature control, combined with screw drive and motor drive, the problems of uneven heating and non-adjustable angle in traditional PE pipe bending devices are solved, achieving efficient and flexible PE pipe bending and reducing the risk of cracking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN WENCHENG PIPE IND CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional PE pipe bending devices suffer from uneven heating, which can easily lead to localized overheating and carbonization or insufficient heating. Furthermore, they cannot flexibly adjust the bending angle, limiting their application scenarios.
The system employs an electric heating tube heating system in conjunction with a controller to achieve precise temperature control. Combined with screw drive and motor drive, it enables flexible adjustment of the bending angle, including linear movement of the preheating ring along the slide rail and linear movement of the bending cylinder. The support rod design reduces stress concentration.
It improves heating efficiency, avoids overheating and carbonization of PE pipes or underheating, enables bending at any angle, enhances the versatility and operational precision of the device, and reduces the risk of pipe cracking.
Smart Images
Figure CN224465245U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of PE pipe bending technology, specifically a PE pipe bending device. Background Technology
[0002] Generally, PE pipes are used for water supply at temperatures below 40°C and cannot be used for hot water delivery. PE is a highly crystalline, non-polar thermoplastic resin. In its original state, it is milky white and somewhat translucent in thin sections. It may be necessary to bend the pipes during use.
[0003] The specific design and structure of PE pipe bending devices may vary depending on different manufacturers and application requirements, but generally they include the following key parts: a frame and a movable die. The frame supports all components, ensures equipment stability, and provides an installation reference. The fixed die is installed on one side of the frame and is a semi-circular groove with a radius equal to the target bending radius. It is made of stainless steel or aluminum alloy and has a polished or Teflon anti-stick coating. The movable die part of the equipment adopts a dual-die structure, where the fixed die and the movable die work together to extrude the pipe, which is suitable for large-angle bending.
[0004] Traditional PE pipe bending devices mostly use open flame heating or simple electric heating strips, which result in slow heating and uneven temperature, easily leading to localized overheating and carbonization of the pipe, causing scorch marks, or insufficient heating causing cracks during bending. PE pipe bending devices can only achieve fixed-angle bending and cannot be flexibly adjusted, failing to meet diverse bending needs and limiting application scenarios. Utility Model Content
[0005] In order to overcome the shortcomings of the existing technology and solve the problems mentioned in the background technology, this utility model proposes a PE pipe bending device.
[0006] The technical solution adopted by this utility model to solve its technical problem is a PE pipe bending device, including a base, a second slide rail on the base, a preheating screw rotatably mounted inside the second slide rail, a preheating slider slidably mounted inside the second slide rail, a threaded hole on the preheating slider, the preheating screw rotating through the threaded hole on the preheating slider, a third motor bracket on the side of the second slide rail, a preheating motor mounted on the third motor bracket, the output end of the preheating motor being fixedly connected to the top of the preheating screw, a preheating ring on the preheating slider, a preheating groove on the preheating ring, and an electric heating tube mounted inside the preheating groove.
[0007] Preferably, the transmission slider is provided with a first slide rail, a fixed screw is rotatably mounted inside the first slide rail, and a fixed slider is provided inside the first slide rail. The fixed slider is provided with a threaded hole, through which the fixed screw rotates. A second motor bracket is provided on the side of the first slide rail, and a fixed motor is mounted on the second motor bracket. The output end of the fixed motor is fixedly connected to the top of the fixed screw. A fixed ring is provided on the fixed slider, and a fixed groove is formed on the fixed ring. A fixed plate is slidably mounted inside the fixed groove. A threaded hole is formed on the fixed ring, and a fixed nut is rotatably mounted inside the threaded hole. The bottom end of the fixed nut is rotatably mounted on the fixed plate. The fixed motor drives the fixed screw, causing the fixed slider to move along the first slide rail, accommodating pipes of different lengths. Rotating the fixed nut pushes the fixed plate, clamping pipes of different outer diameters. This design offers strong versatility. A rubber pad can be added to the contact surface between the fixed plate and the pipe to increase friction and prevent the pipe from sliding during bending, which could lead to angular deviation.
[0008] Preferably, the base is provided with a support seat, the bottom end of the base is rotatably provided with an adjustment plate, the base is provided with a No. 4 motor bracket, the No. 4 motor bracket is provided with an adjustment motor, the output end of the adjustment motor is fixedly connected to the adjustment plate, the adjustment plate is provided with a support rod, the top end of the support rod is provided with a mounting plate, the mounting plate is provided with a bending cylinder, and the output end of the bending cylinder is provided with a bending plate.
[0009] Preferably, the base is provided with support legs, which are used to support and fix the bending device. The support legs increase the contact area between the device and the ground, reduce shaking during operation, and prevent the equipment from tipping over, especially when bending large-diameter pipes.
[0010] Preferably, the base has an adjustment groove, in which an adjustment screw is rotatably mounted. A first motor bracket is provided on the side of the base, and a drive motor is mounted on the first motor bracket. A drive slider is provided in the adjustment groove, and a threaded hole is provided on the drive slider. The adjustment screw rotates through the threaded hole on the drive slider. The output end of the drive motor is fixedly connected to the top of the adjustment screw. The drive slider connects the fixing system and the bending system, so that the two move synchronously, ensuring that the pipe maintains axial alignment during heating, fixing and bending, and avoiding uneven bending caused by eccentricity.
[0011] Preferably, the drive motor, preheating motor, heating element, stationary motor, adjusting motor, and bending cylinder are all connected to the controller. The controller is used to control the start and stop of the drive motor, preheating motor, heating element, stationary motor, adjusting motor, and bending cylinder. Each system works independently yet collaboratively, which facilitates maintenance and upgrades.
[0012] The advantages of this utility model are: the electric heating tube has high heating efficiency, and the temperature can be precisely controlled with the controller, avoiding the PE pipe from bending and cracking due to overheating and carbonization or insufficient heating. The screw drive enables the preheating ring to move linearly along the No. 2 slide rail, and the heating area can be flexibly adjusted according to the bending position to adapt to different bending requirements. The preheating system is independent of the bending mechanism, which facilitates the maintenance and replacement of heating elements.
[0013] The adjustment plate can rotate 0-360°, and in conjunction with the linear motion of the bending cylinder, it can achieve bending at any angle, offering high flexibility. The support rod and mounting plate form a cantilever structure, making the bending force application point closer to the pipe bending center, reducing stress concentration and lowering the risk of pipe cracking. The cylinder drive is more precise than manual operation, and the bending speed and force can be preset through the controller to ensure batch consistency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0015] Figure 1 This is a schematic diagram of the overall structure from a first-person perspective;
[0016] Figure 2 This is a schematic diagram of the overall structure from a second-person perspective;
[0017] Figure 3 This is a schematic diagram of the regulating device.
[0018] Figure 4 This is a schematic diagram of the fixing device structure;
[0019] Figure 5 This is a schematic diagram of the preheating device.
[0020] In the diagram: 1. Base; 2. Adjustment groove; 3. Adjustment screw; 4. Motor 1 bracket; 5. Drive motor; 6. Slide rail 1; 8. Fixed screw; 9. Motor 2 bracket; 10. Fixed motor; 11. Fixed slider; 12. Fixed ring; 13. Fixed groove; 14. Fixed plate; 15. Fixed nut; 16. Slide rail 2; 18. Preheating screw; 19. Preheating slider; 20. Motor 3 bracket; 21. Preheating motor; 22. Preheating ring; 23. Preheating groove; 24. Heating element; 25. Support base; 26. Adjustment plate; 27. Motor 4 bracket; 28. Adjustment motor; 29. Support rod; 30. Mounting plate; 31. Bending cylinder; 32. Bending plate; 33. Support leg. Detailed Implementation
[0021] 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 scope of protection of the present utility model.
[0022] Please see Figure 1-5 As shown, a PE pipe bending device includes a base 1, on which a second slide rail 16 is provided. A preheating screw 18 is rotatably disposed within the second slide rail 16, and a preheating slider 19 is slidably disposed within the second slide rail 16. The preheating slider 19 is provided with a threaded hole, through which the preheating screw 18 rotates. A third motor bracket 20 is provided on the side of the second slide rail 16, and a preheating motor 21 is disposed on the third motor bracket 20. The output end of the preheating motor 21 is fixedly connected to the top end of the preheating screw 18. A preheating ring 22 is provided on the preheating slider 19, and a preheating groove 23 is provided on the preheating ring 22. An electric heating tube 24 is disposed within the preheating groove 23.
[0023] During operation, in order to preheat the PE pipe, the preheating motor 21 drives the preheating screw 18 to rotate, which in turn drives the preheating slider 19 to move within the second slide rail 16, so that the preheating ring 22 is placed on the part of the pipe to be bent. The electric heating tube 24 in the preheating groove 23 of the preheating ring 22 is energized and heats up, which locally heats the pipe, reduces the hardness of the PE material, improves its plasticity, and facilitates subsequent bending.
[0024] A first slide rail 6 is provided on the transmission slider. A fixed lead screw 8 is rotatably installed inside the first slide rail 6. A fixed slider 11 is provided inside the first slide rail 6. The fixed slider 11 has a threaded hole. The fixed lead screw 8 rotates through the threaded hole on the fixed slider 11. A second motor bracket 9 is provided on the side of the first slide rail 6. A fixed motor 10 is provided on the second motor bracket 9. The output end of the fixed motor 10 is fixedly connected to the top end of the fixed lead screw 8. A fixed ring 12 is provided on the fixed slider 11. A fixed groove 13 is opened on the fixed ring 12. A fixed plate 14 is slidably installed in the fixed groove 13. A fixed nut 15 is rotatably installed in the threaded hole on the fixed ring 12. The bottom end of the fixed nut 15 is rotatably installed on the fixed plate 14.
[0025] During operation, in order to bend the PE pipe, the adjusting motor 28 drives the adjusting plate 26 to rotate around the bottom of the base 1. The tilt angle of the bending cylinder 31 is adjusted by the support rod 29 and the mounting plate 30, and the target bending angle is set. When bending, the piston rod of the bending cylinder 31 pushes the bending plate 32 to apply lateral force to the pipe, so that the preheated pipe bends at the preset angle.
[0026] A support base 25 is provided on the base 1. An adjustment plate 26 is rotatably provided at the bottom end of the base 1. A fourth motor bracket 27 is provided on the base 1. An adjustment motor 28 is provided on the fourth motor bracket 27. The output end of the adjustment motor 28 is fixedly connected to the adjustment plate 26. A support rod 29 is provided on the adjustment plate 26. A mounting plate 30 is provided at the top end of the support rod 29. A bending cylinder 31 is provided on the mounting plate 30. A bending plate 32 is provided at the output end of the bending cylinder 31.
[0027] The base 1 is provided with a support leg 33, which is used to support and fix the bending device. The base 1 is provided with an adjustment groove 2, and an adjustment screw 3 is rotatably installed in the adjustment groove 2. A first motor bracket 4 is provided on the side of the base 1, and a drive motor 5 is provided on the first motor bracket 4. A drive slider is provided in the adjustment groove 2, and a threaded hole is provided on the drive slider. The adjustment screw 3 rotates through the threaded hole on the drive slider, and the output end of the drive motor 5 is fixedly connected to the top end of the adjustment screw 3.
[0028] The drive motor 5, preheating motor 21, heating element 24, fixed motor 10, adjusting motor 28, and bending cylinder 31 are all connected to the controller, which is used for the start and stop control of the drive motor 5, preheating motor 21, heating element 24, fixed motor 10, adjusting motor 28, and bending cylinder 31.
[0029] During operation, in order to fix and adjust the PE pipe, the drive motor 5 drives the adjusting screw 3 to rotate. Under the action of the thread, the drive slider moves laterally in the adjusting groove 2, realizing the adjustment or feeding of the pipe before bending. At the same time, the fixed motor 10 on the first slide rail 6 drives the fixed screw 8, which drives the fixed slider 11 to move, so that the fixing ring 12 moves closer to or away from the pipe. The fixing plate 14 is adjusted by the fixing nut 15 to clamp the pipe and complete the axial fixation.
[0030] Working principle: In order to fix and adjust the PE pipe, the drive motor 5 drives the adjusting screw 3 to rotate. Under the action of the thread, the drive slider moves laterally in the adjusting groove 2 to realize the position adjustment or feeding of the pipe before bending. At the same time, the fixed motor 10 on the first slide rail 6 drives the fixed screw 8 to move the fixed slider 11, so that the fixing ring 12 moves closer to or away from the pipe. The fixing plate 14 is adjusted by the fixing nut 15 to clamp the pipe and complete the axial fixation.
[0031] In order to preheat the PE pipe, the preheating motor 21 drives the preheating screw 18 to rotate, which drives the preheating slider 19 to move within the second slide rail 16, so that the preheating ring 22 is placed on the part of the pipe to be bent. The electric heating tube 24 in the preheating groove 23 of the preheating ring 22 is energized and heated to locally heat the pipe, reduce the hardness of the PE material, improve plasticity, and facilitate subsequent bending.
[0032] In order to bend the PE pipe, the adjusting motor 28 drives the adjusting plate 26 to rotate around the bottom of the base 1. The tilt angle of the bending cylinder 31 is adjusted by the support rod 29 and the mounting plate 30. The target bending angle is set. When bending, the piston rod of the bending cylinder 31 pushes the bending plate 32 to apply lateral force to the pipe, so that the preheated pipe bends at the preset angle.
[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A PE pipe bending device, characterized in that: The system includes a base (1), on which a second slide rail (16) is provided. A preheating screw (18) is rotatably arranged inside the second slide rail (16). A preheating slider (19) is slidably arranged inside the second slide rail (16). A threaded hole is provided on the preheating slider (19). The preheating screw (18) rotates through the threaded hole on the preheating slider (19). A third motor bracket (20) is provided on the side of the second slide rail (16). A preheating motor (21) is provided on the third motor bracket (20). The output end of the preheating motor (21) is fixedly connected to the top end of the preheating screw (18). A preheating ring (22) is provided on the preheating slider (19). A preheating groove (23) is provided on the preheating ring (22). An electric heating tube (24) is provided inside the preheating groove (23).
2. The PE pipe bending device according to claim 1, characterized in that: A first slide rail (6) is provided on the transmission slider. A fixed screw (8) is rotatably provided in the first slide rail (6). A fixed slider (11) is provided in the first slide rail (6). A threaded hole is provided on the fixed slider (11). The fixed screw (8) rotates through the threaded hole on the fixed slider (11). A second motor bracket (9) is provided on the side of the first slide rail (6). A fixed motor (10) is provided on the second motor bracket (9). The output end of the fixed motor (10) is fixedly connected to the top end of the fixed screw (8). A fixed ring (12) is provided on the fixed slider (11). A fixed groove (13) is opened on the fixed ring (12). A fixed plate (14) is slidably provided in the fixed groove (13). A threaded hole is opened on the fixed ring (12). A fixed nut (15) is rotatably provided in the threaded hole. The bottom end of the fixed nut (15) is rotatably provided on the fixed plate (14).
3. A PE pipe bending device according to claim 2, characterized in that: A support base (25) is provided on the base (1). An adjustment plate (26) is rotatably provided at the bottom end of the base (1). A fourth motor bracket (27) is provided on the base (1). An adjustment motor (28) is provided on the fourth motor bracket (27). The output end of the adjustment motor (28) is fixedly connected to the adjustment plate (26). A support rod (29) is provided on the adjustment plate (26). An mounting plate (30) is provided at the top of the support rod (29). A bending cylinder (31) is provided on the mounting plate (30). A bending plate (32) is provided at the output end of the bending cylinder (31).
4. A PE pipe bending device according to claim 3, characterized in that: The base (1) is provided with a support leg (33), which is used to support and fix the bending device.
5. A PE pipe bending device according to claim 4, characterized in that: The base (1) is provided with an adjustment groove (2), and an adjustment screw (3) is rotatably installed in the adjustment groove (2). A first motor bracket (4) is provided on the side of the base (1), and a transmission motor (5) is provided on the first motor bracket (4). A transmission slider is provided in the adjustment groove (2), and a threaded hole is provided on the transmission slider. The adjustment screw (3) rotates through the threaded hole on the transmission slider, and the output end of the transmission motor (5) is fixedly connected to the top end of the adjustment screw (3).
6. A PE pipe bending device according to claim 5, characterized in that: The drive motor (5), preheating motor (21), heating tube (24), fixed motor (10), adjusting motor (28) and bending cylinder (31) are all connected to the controller, which is used for the start and stop control of the drive motor (5), preheating motor (21), heating tube (24), fixed motor (10), adjusting motor (28) and bending cylinder (31).