Plastic pipeline bender
By designing a bending device for plastic pipes, using external and internal elastic bodies and pressure detection devices for heating and control, the problem of poor bending of plastic pipes in the prior art is solved, and an efficient and safe bending effect is achieved.
Patent Information
- Application Number
- CN202510288210.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to effectively bending plastic pipes, especially in the case of avoiding cross-bends of pipes and preventing bending and breaking caused by excessive force.
A plastic pipe bending device is designed, using components such as external elastomer, internal elastomer, pressure detection device, rotation shaft and claw. By simultaneously heating the outer and inner sides of the plastic pipe, the hardness of the bent part is controlled, and the speed and heating temperature of the rotation shaft are adjusted through the pressure detection device to avoid pipe bending.
It realizes efficient bending of plastic pipes, avoids bending and breaking of pipe cross-sections, improves operating efficiency, and can handle bending of large-thickness pipes.
Smart Images
Figure CN119871865A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of plastic pipe processing, in particular to a plastic pipe bender. Background Art
[0002] Plastic pipes need to be bent at certain positions to adapt to the environment in which the pipes are located. The bending process requires heating the bending part and applying a certain force. During this process, attention should be paid to the changes in the bending part to avoid excessive bending. Bending of the cross section of the pipe should be avoided as much as possible. Therefore, the main problem solved by the present invention is how to provide a plastic bending device with good bending effect to avoid damage to the pipe. Summary of the invention
[0003] The object of the present invention is to provide a plastic pipe bender to overcome the above-mentioned defects in the prior art.
[0004] The present invention is achieved through the following technical solutions.
[0005] A plastic pipe bender of the present invention comprises a support rod, the support rod is provided with a connecting body, two groups of rotating shafts are rotatably provided on both sides of the connecting body, claws are provided at the ends of the rotating shafts, two groups of limiting bodies are rotatably provided at the ends of the support rod, a heat insulating body is provided on the outside of the limiting body of the support rod, an inner elastic body is provided on the outside of the heat insulating body, a first heating body is provided in the inner elastic body, an outer elastic body is provided on one side of the inner elastic body, a telescopic rod is connected between the outer elastic body and the inner elastic body, the telescopic rod can adjust the distance between the outer elastic body and the inner elastic body by telescoping, a second heating body is provided in the outer elastic body, and a pressure detection device is provided in the inner elastic body.
[0006] A further technical solution is that a movable groove is provided in the middle of the support rod, a movable slider is slidably provided in the movable groove, a movable body is provided at the lower side of the movable groove, the movable body is connected to the movable slider, the movable body is connected to a sliding rod, a slider is provided at the end of the sliding rod, the rotating shaft is provided with a sliding groove, and the slider slides in the sliding groove.
[0007] According to a further technical solution, a screw is rotatably provided on the wall of the movable groove, a threaded hole is provided on the movable slider, the screw is threadedly connected to the threaded hole of the movable slider, a rotating shaft is provided on the lower side of the screw, a grip is provided on one end of the support rod, and the grip is connected to the rotating shaft.
[0008] A further technical solution is that a slide groove is provided at the end of the support rod, a slider is provided in the slide groove for sliding, the slider is rotatably provided with a rotating shaft, the rotating shaft is rotatably connected to the two groups of the limiting bodies, the slide groove wall is provided with a distance detector, a compression spring is provided between the slide groove wall and the slider, and the heat insulator is rotatably connected to the rotating shaft.
[0009] According to a further technical solution, the support rod is provided with an adjusting slot, the adjusting slot is slidably provided with an adjusting slider, the adjusting slider is rotatably provided with two sets of connecting rods, and the end of the connecting rod is rotatably connected to one side of the limiting body.
[0010] A further technical solution is that the support rod is provided with a transmission cavity, a first bevel gear is rotatably provided in the transmission cavity, a second bevel gear is meshed with the first bevel gear, the shaft of the second bevel gear is connected with an adjustment handle, the adjustment handle extends to the outside of the support rod, the shaft of the first bevel gear is provided with an adjustment threaded rod, the adjustment slider is provided with a threaded hole, and the threaded hole of the adjustment slider is threadedly connected to the adjustment threaded rod.
[0011] Beneficial effects of the present invention:
[0012] A plastic pipe bender of the present invention is provided with an outer elastic body, an inner elastic body, a pressure detection device, a rotating shaft, claws, etc. The second heating body and the first heating body heat and soften the outer side and the inner side of the plastic pipe respectively, and provide continuous heating to the bending part, so as to timely control the hardness of the bending part of the plastic pipe. The pressure detection device detects the pressure applied to the inner elastic body by the plastic pipe. When the pressure exceeds the set value, the rotation speed of the rotating shaft is reduced, and the temperature of the second heating body and the first heating body is increased until the pressure is reduced to a reasonable range, and the heating and bending are continued again to avoid bending of the pipe due to excessive force of the rotating shaft. The device can heat the inner and outer sides of the bent pipe at the same time, improve the working efficiency within a reasonable range, and is also conducive to eliminating stress, improving the bending efficiency, and realizing bending at a larger angle and bending of thick pipes.
[0013] When the pressure is detected to be lower than the set value, the temperature of the second heating body and the first heating body is lowered within a reasonable range, and the rotation speed of the rotating shaft is increased, thereby adaptively increasing the bending speed and avoiding the situation where the pipe cross section is severely deformed due to excessive temperature at the pipe bend.
[0014] The device sets a bending limit for the bending of the internal elastic body by arranging an internal elastic body, a limiter, a connecting rod, an adjusting slider, etc., and controls the position of the adjusting slider in the adjusting slot while controlling the angles of two sets of limiters. The device can bend the pipeline in stages to avoid deformation of the pipeline caused by a single bending. The degree of pipeline bending can be quantified by controlling the limit curvature of the internal elastic body. In addition, the bending degrees of different pipeline diameters are different, and the pipeline bending limit can be set in advance in a targeted manner to avoid severe deformation of the pipeline cross section caused by excessive force. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0018] Figure 2 yes Figure 1 A schematic diagram of the structure enlargement in the middle;
[0019] Figure 3 yes Figure 1 A magnified schematic diagram of the structure at B in the middle;
[0020] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at point C in the middle. DETAILED DESCRIPTION
[0021] Combine the following Figure 1-4 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front, and back directions mentioned below are the same as Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.
[0022] Combined with Figure 1-4 The plastic pipe bender comprises a support rod 10, wherein the support rod 10 is provided with a connecting body 12, two groups of rotating shafts 11 are rotatably provided on both sides of the connecting body 12, claws 13 are provided at the ends of the rotating shafts 11, two groups of limiting bodies 23 are rotatably provided at the ends of the support rod 10, a heat insulator 41 is provided on the outside of the limiting body 23 of the support rod 10, an inner elastomer 24 is provided on the outside of the heat insulator 41, a first heating body 27 is provided in the inner elastomer 24, an outer elastomer 25 is provided on one side of the inner elastomer 24, a telescopic rod 26 is connected between the outer elastomer 25 and the inner elastomer 24, the telescopic rod 26 can adjust the distance between the outer elastomer 25 and the inner elastomer 24 by telescoping, a second heating body 40 is provided in the outer elastomer 25, and the inner elastomer 24 is provided with a pressure detection device.
[0023] When using the device, the claws 13 are clamped on both sides of the plastic pipe, and the plastic pipe is inserted into the gap between the outer elastic body 25 and the inner elastic body 24. The left and right rotating shafts 11 drive the claws 13 to rotate, and the claws 13 drive the plastic pipe to bend. During the bending process, the telescopic rod 26 brings the outer elastic body 25 and the inner elastic body 24 close to the plastic pipe, and the second heating body 40 and the first heating body 27 heat and soften the outer side and the inner side of the plastic pipe respectively. The inner side of the pipe is against one side of the inner elastic body 24. During this process, the angle of the limit body 23 rotates slowly, and the contact point between the limit body 23 and the inner elastic body 24 keeps moving away from both sides, and the inner elastic body 24 can The outer elastic body 25 on the outside of the supporting pipe assists in supporting and heating the plastic pipe to prevent the softened pipe from bending suddenly. During the bending process, the pressure detection device detects the pressure applied by the plastic pipe to the inner elastic body 24. When the pressure exceeds the set value, the rotation speed of the rotating shaft 11 is reduced until the pressure drops to a reasonable range, and the heating and bending are continued again to avoid bending of the pipe due to excessive force of the rotating shaft 11. The device can heat the inside and outside of the pipe at the same time, improve the working efficiency within a reasonable range, and is also conducive to eliminating stress, improving bending efficiency, achieving bending at a larger angle, and achieving bending of thicker pipes.
[0024] Preferably, a movable groove 20 is provided in the middle of the support rod 10, and a movable slider 21 is slidably provided in the movable groove 20. A movable body 17 is provided on the lower side of the movable groove 20, and the movable body 17 is connected to the movable slider 21. The movable body 17 is connected to a sliding rod 16, and a slider 15 is provided at the end of the sliding rod 16. The rotating shaft 11 is provided with a sliding groove 14, and the slider 15 slides in the sliding groove 14.
[0025] The movable slider 21 slides in the movable groove 20, and the movable slider 21 drives the movable body 17 to slide upward along the support rod 10. The movable body 17 drives the sliding rod 16 to slide up and down. The sliding rod 16 drives the slider 15 to slide in the sliding groove 14, and the slider 15 drives the rotating shaft 11 to rotate around the connecting body 12.
[0026] Preferably, a screw 22 is rotatably provided on the wall of the movable groove 20, the movable slider 21 is provided with a threaded hole, the threaded hole of the movable slider 21 is threadedly connected with the screw 22, a rotating shaft 19 is provided on the lower side of the screw 22, and a grip rod 18 is provided at one end of the support rod 10, and the grip rod 18 is connected to the rotating shaft 19.
[0027] The handle 18 is held and pushed to rotate, and the handle 18 drives the screw 22 to rotate through the rotating shaft 19, and the screw 22 drives the movable slider 21 to slide in the movable groove 20 through the thread.
[0028] Preferably, a slide groove 28 is provided at the end of the support rod 10, a slider 42 is slidably provided in the slide groove 28, a rotating shaft 29 is rotatably provided on the slider 42, the rotating shaft 29 is rotatably connected to the two groups of the limiting bodies 23, a distance detector 31 is provided on the wall of the slide groove 28, a compression spring 30 is provided between the wall of the slide groove 28 and the slider 42, and the heat insulation body 41 is rotatably connected to the rotating shaft 29.
[0029] During the bending process of the plastic pipe, the plastic pipe squeezes the inner elastomer 24, and the inner elastomer 24 drives the rotating shaft 29 and the slider 42 to slide in the slide groove 28 through the heat insulator 41. The slider 42 squeezes the compression spring 30, and the distance detector 31 detects the movement of the slider 42, so as to judge the force applied to the inner elastomer 24 at the bending point of the pipe at this time. When the force here is too large, it means that the temperature at the bending point is not enough. When the force here is too small, it means that the temperature is too high. Through the pressure detection here, the temperature is controlled within a reasonable range. On the one hand, it can avoid bending and breaking due to the high hardness of the pipe, and on the other hand, it can avoid the pipe being too soft and causing a drastic change in the pipe cross-section.
[0030] Preferably, the support rod 10 is provided with an adjustment slot 33 , the adjustment slot 33 is slidably provided with an adjustment slider 35 , the adjustment slider 35 is rotatably provided with two groups of connecting rods 32 , and the end of the connecting rod 32 is rotatably connected to one side of the limiting body 23 .
[0031] The adjusting slider 35 slides in the adjusting slot 33 , and the adjusting slider 35 drives the connecting rod 32 to swing. The connecting rod 32 adjusts the rotation angle of the limiting body 23 , thereby adjusting the bending limit of the inner elastic body 24 .
[0032] Preferably, the support rod 10 is provided with a transmission chamber 36, in which a first bevel gear 37 is rotatably provided, the first bevel gear 37 is meshed with a second bevel gear 39, the shaft of the second bevel gear 39 is connected with an adjustment handle 38, and the adjustment handle 38 extends to the outside of the support rod 10, the shaft of the first bevel gear 37 is provided with an adjustment threaded rod 34, the adjustment slider 35 is provided with a threaded hole, and the threaded hole of the adjustment slider 35 is threadedly connected to the adjustment threaded rod 34.
[0033] The adjusting handle 38 is held and rotated, and the adjusting handle 38 drives the second bevel gear 39 to rotate. The second bevel gear 39 drives the adjusting threaded rod 34 to rotate through the first bevel gear 37. The adjusting threaded rod 34 rotates and drives the adjusting slider 35 to slide in the adjusting slot 33.
[0034] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology in this field to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A plastic pipe bender, comprising a support rod, characterized in that: The support rod is provided with a connecting body, two groups of rotating shafts are rotatably provided on both sides of the connecting body, claws are provided at the ends of the rotating shafts, and two groups of limiting bodies are rotatably provided at the ends of the support rod. The support rod is provided with a heat insulating body on the outside of the limiting body, an inner elastic body is provided on the outside of the heat insulating body, a first heating body is provided in the inner elastic body, an outer elastic body is provided on one side of the inner elastic body, a telescopic rod is connected between the outer elastomer and the inner elastomer, and the telescopic rod can adjust the distance between the outer elastomer and the inner elastomer by telescoping, a second heating body is provided in the outer elastomer, and a pressure detection device is provided on the inner elastomer.
2. A plastic pipe bender according to claim 1, characterized in that: A movable groove is provided in the middle of the support rod, a movable slider is slidably provided in the movable groove, a movable body is provided at the lower side of the movable groove, the movable body is connected to the movable slider, a sliding rod is provided on the movable body, a slider is provided at the end of the sliding rod, the rotating shaft is provided with a sliding groove, and the slider slides in the sliding groove.
3. A plastic pipe bender according to claim 2, characterized in that: The movable groove wall is rotatably provided with a screw rod, the movable slider is provided with a threaded hole, the threaded hole of the movable slider is threadedly connected with the screw rod, a rotating shaft is provided at the lower side of the screw rod, and a grip rod is provided at one end of the support rod, and the grip rod is connected to the rotating shaft.
4. A plastic pipe bender according to claim 1, characterized in that: A slide groove is provided at the end of the support rod, a slider is provided in the slide groove for sliding, a rotating shaft is provided for the slider to rotate, the rotating shaft is rotatably connected to the two groups of limiting bodies, a distance detector is provided on the slide groove wall, a compression spring is provided between the slide groove wall and the slider, and the heat insulator is rotatably connected to the rotating shaft.
5. A plastic pipe bender according to claim 1, characterized in that: The support rod is provided with an adjusting slide groove, the adjusting slide groove is slidably provided with an adjusting slider, the adjusting slider is rotatably provided with two groups of connecting rods, and the end of the connecting rod is rotatably connected to one side of the limiting body.
6. A plastic pipe bender according to claim 5, characterized in that: The support rod is provided with a transmission cavity, a first bevel gear is rotatably provided in the transmission cavity, a second bevel gear is meshed with the first bevel gear, an adjustment handle is connected to the shaft of the second bevel gear, the adjustment handle extends to the outside of the support rod, an adjustment threaded rod is provided on the shaft of the first bevel gear, the adjustment slider is provided with a threaded hole, and the threaded hole of the adjustment slider is threadedly connected to the adjustment threaded rod.