Plastic pipeline flaring machine

Abstract

The utility model discloses a plastic pipeline flaring machine which comprises a conveying mechanism, a heating mechanism, a flaring mechanism and a clamping mechanism. According to the utility model, the heating mechanism and the flaring mechanism are coaxially arranged, so that seamless connection of heating softening and reaming of the plastic pipeline is realized, the heating and flaring time is automatically controlled, the uncertainty caused by manual time control is avoided, the problems of overheating softening and supercooling hardening in the pipeline flaring process are avoided, and the production efficiency is improved. The machining quality is guaranteed, and the production efficiency of pipeline flaring is greatly improved; the power device and the pushing air cylinder are matched to drive the shaping wheel to rotate, meanwhile, a pipeline is extruded, meanwhile, flaring is conducted, and the flaring machining efficiency is improved. And by arranging the detachably connected shaping wheels with different diameters, the device can be suitable for flaring processing of plastic pipes with different calibers, and the application range of the device is widened.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe production, and in particular to a plastic pipe flaring machine. Background Technology

[0002] High-density polyethylene, abbreviated as "HDPE," is a highly crystalline, non-polar thermoplastic resin. In its natural state, HDPE is milky white, and in thin sections, it exhibits a degree of translucency. HDPE pipes possess a range of advantages, including stable and reliable joints, impact resistance, crack resistance, aging resistance, and corrosion resistance. In water supply and drainage systems, plastic pipes have gradually replaced traditional pipes such as cast iron and galvanized steel pipes, becoming the mainstream material. Compared to traditional pipes, plastic pipes offer significant advantages such as light weight, corrosion resistance, low flow resistance, energy saving, easy and quick installation, and lower cost, making them popular in the pipeline engineering industry. HDPE pipes are generally connected using a socket joint method, requiring different radii at both ends. Since these pipes are initially formed with a uniform overall radius, further flaring is necessary at one end.

[0003] Existing flaring devices work by first heating and softening one end of the pipe, then moving it to a flaring mold using a moving device. Since both the heating / softening and flaring processes are done manually, the heating time is difficult to control, and the quality of the softening is hard to guarantee. Excessive heating can cause pipe deformation, while prolonged placement can result in insufficient softening, making flaring difficult and limiting processing efficiency. Furthermore, most large-scale plastic solid-wall pipe flaring machines in China currently produce pipes with fixed diameters. With increasingly diversified market demands, fixed-diameter solid-wall pipe flaring machines can no longer meet production needs; therefore, there is an urgent need for flaring machines capable of handling pipes of different diameters. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a plastic pipe flaring machine.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a plastic pipe flaring machine, including a conveying mechanism for conveying the pipe, a heating mechanism for heating the pipe and a flaring mechanism for flaring the pipe, which are arranged sequentially on one side of the conveying mechanism, and a clamping mechanism for clamping the pipe between the conveying mechanism and the heating mechanism. The flaring mechanism includes a flaring mold, a translation device for driving the flaring mold to move, and a power device for driving the flaring mold to rotate. A connecting base is provided between the flaring mold and the translation device. The heating mechanism is installed between the flaring mechanism and the clamping mechanism. The center line of the flaring mold is coaxial with the heating center line of the heating mechanism and the center of the pipe conveyed by the conveying mechanism.

[0007] As a preferred technical solution of this utility model, the conveying mechanism includes a lifting cylinder for lifting the pipe and a plurality of supporting grooves for supporting the bottom surface of the pipe. The lifting cylinder is disposed on one side below the pipe. The upper surface of the supporting groove is V-shaped and is provided with a plurality of rollers for driving the pipe to roll.

[0008] As a preferred embodiment of this utility model, the heating mechanism is provided with a heating sleeve, which is a hollow cylindrical structure. A fixing frame is installed on the outside of the heating sleeve. The axis of the heating sleeve is coaxial with the flaring mold, and the fixing frame is parallel to the flaring mechanism.

[0009] As a preferred technical solution of this utility model, the clamping mechanism includes two clamping cylinders symmetrically arranged along the center of the pipe. Each clamping cylinder has a clamping block connected to its movable end. The clamping block is V-shaped and has an elastic pad for clamping the pipe connected to its surface. The two sets of elastic pads are vertically symmetrically arranged along the pipe.

[0010] As a preferred embodiment of this utility model, the flaring die includes a shaping wheel for extruding the edge of the pipe, a rotating base for mounting and driving the shaping wheel to rotate, a feed cylinder for moving the shaping wheel, and a transmission box for mounting the rotating base and the feed cylinder. One end of the shaping wheel has a tapered slope, and the outer diameter of the shaping wheel is the same as the inner diameter of the pipe after flaring. The rotating base is connected to the power device via a belt. The bottom of the transmission box is fixedly mounted on the connecting base.

[0011] As a preferred embodiment of the present invention, the translation device includes a sliding track, a movable plate slidably connected to the sliding track, and a propulsion cylinder for driving the movable plate to translate. The fixed frame and the connecting base are mounted on the movable plate.

[0012] As a preferred embodiment of this utility model, the power device includes a motor and a motor mounting base. The motor mounting base is installed above the movable plate, and the output end of the motor is connected to the flared mold via a belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By setting the heating mechanism and the flaring mechanism coaxially, the seamless connection between heating and softening of plastic pipes and flaring is achieved. By automatically controlling the heating and flaring time, the uncertainty caused by manual time control is avoided, and the problems of overheating and overcooling during pipe flaring are avoided, ensuring processing quality, greatly improving the production efficiency of pipe flaring, and thus improving economic benefits.

[0015] 2. By using a power unit and a propulsion cylinder to drive the shaping wheel to rotate, the pipe is squeezed and widened at the same time, which improves the processing efficiency of widening.

[0016] 3. By setting detachable shaping wheels of different diameters, the equipment can be used for flaring plastic pipes of different diameters, thus improving its applicability. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a side view of the present invention;

[0022] In the diagram: 1. Conveying mechanism; 2. Heating mechanism; 3. Flaring mechanism; 4. Clamping mechanism; 5. Flaring mold; 6. Translation device; 7. Power unit; 8. Connecting base; 11. Lifting cylinder; 12. Support groove; 21. Heating sleeve; 22. Fixing frame; 41. Clamping cylinder; 42. Clamping block; 43. Elastic pad; 51. Shaping wheel; 52. Rotating base; 53. Feeding cylinder; 54. Transmission box; 61. Sliding rail; 62. Moving plate; 63. Propulsion cylinder; 71. Motor; 72. Motor mounting base. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] In the attached diagram, all identical reference numerals refer to the same components.

[0025] like Figure 1-4 As shown, this utility model provides a plastic pipe flaring machine, including a conveying mechanism 1 for conveying pipes, a heating mechanism 2 for heating pipes and a flaring mechanism 3 for flaring pipes arranged sequentially on one side of the conveying mechanism 1, and a clamping mechanism 4 for clamping pipes located between the conveying mechanism 1 and the heating mechanism 2.

[0026] The flaring mechanism 3 includes a flaring mold 5, a translation device 6 for driving the flaring mold 5 to move, and a power device 7 for driving the flaring mold 5 to rotate.

[0027] A connecting base 8 is provided between the flaring mold 5 and the translation device 6. The heating mechanism 2 is installed between the flaring mechanism 3 and the clamping mechanism 4. The center line of the flaring mold 5 is coaxially set with the heating center line of the heating mechanism 2 and the center of the conveying pipe of the conveying mechanism 1.

[0028] The method of using this utility model is as follows:

[0029] 1. The pipe to be processed is moved to the set position by the conveying mechanism 1 and clamped and fixed by the clamping block 42 on the clamping mechanism 4;

[0030] 2. The heating mechanism 2 and the flaring mold 5 move toward the pipeline under the drive of the propulsion cylinder 63 until the pipeline is completely inside the heating jacket 21. The pipeline gradually softens after being heated for a set time.

[0031] 3. Driven by the power unit 7, the shaping wheel 51 rotates continuously. At the same time, driven by the feed cylinder 53, the shaping wheel 51 gradually moves towards the pipe opening to expand, thereby realizing the flaring operation. After the operation is completed, under the action of the push cylinder 63, the heating mechanism 2 and the flaring mold 5 are separated from the pipe.

[0032] Furthermore, the conveying mechanism 1 includes a lifting cylinder 11 for lifting the pipe and several supporting grooves 12 for supporting the bottom surface of the pipe. The lifting cylinder 11 is located on one side below the pipe. The upper surface of the supporting groove 12 is V-shaped. The upper surface of the V-shape is provided with multiple sets of rollers for driving the pipe to roll. The rollers are arranged in an array along the direction of rolling to conveying.

[0033] In this embodiment, there are two support grooves 12. The movable end of the lifting cylinder 11 is connected to one of the support grooves 12 by bolts to support the side of the pipe and prevent the center of the pipe from shifting due to gravity during the flaring process.

[0034] Furthermore, the heating mechanism 2 is equipped with a heating sleeve 21, which is a hollow cylindrical structure. A fixing frame 22 is installed on the outside of the heating sleeve 21. The axis of the heating sleeve 21 is coaxial with the flaring mold 5. The fixing frame 22 is parallel to the flaring mechanism 3. After the pipe enters the heating sleeve 21, it coincides with the axis of the heating sleeve 21. The outer wall of the pipe gradually softens under the heating action of the heating sleeve 21.

[0035] Furthermore, the clamping mechanism 4 includes two clamping cylinders 41 symmetrically arranged along the center of the pipe. Each clamping cylinder 41 has a clamping block 42 connected to its movable end. The clamping block 42 is V-shaped, and the surface of the clamping block 42 is connected to an elastic pad 43 for clamping the pipe. The two sets of elastic pads 43 are vertically symmetrically arranged along the pipe, so that the pipe is subjected to uniform force in the clamping block 42, and the pipe is prevented from deforming.

[0036] In this embodiment, the movable end of the clamping cylinder 41 drives two oppositely arranged clamping blocks 42 to move towards each other. The elastic pads 43 attached to each clamping block 42 contact the side of the pipe, completely clamping the pipe and preventing the pipe from moving during the flaring process.

[0037] For further details, please refer to the appendix. Figure 2 The flaring die 5 includes a shaping wheel 51 for extruding the edge of the pipe, a rotating base 52 for mounting and driving the shaping wheel 51 to rotate, a feed cylinder 53 for moving the shaping wheel 51, and a transmission box 54 for mounting the rotating base 52 and the feed cylinder 53. One end of the shaping wheel 51 is tapered, and the outer diameter of the shaping wheel 51 is the same as the inner diameter of the pipe after flaring. The rotating base 52 is connected to the power unit 7 via a belt. The bottom of the transmission box 54 is fixedly mounted on the connecting base 8.

[0038] In this embodiment, the shaping wheel 51 is detachably mounted on the rotating base 52. Different diameter shaping wheels 51 can be replaced according to the required pipe diameter to increase the applicability of the equipment. The center of the shaping wheel 51 is fixedly connected to the movable end of the feed cylinder 53. Under the action of the feed cylinder 53, one end of the shaping wheel 51 moves horizontally in a tapered slope, gradually pressing into the inner wall of the pipe, thus widening the pipe end until the set widening length is reached. The coaxial arrangement of the shaping wheel 51 and the heating sleeve 21 achieves a seamless connection between heating softening and widening. Automatic control of the heating and widening time avoids the uncertainty caused by manual time control, preventing overheating softening and undercooling hardening during pipe widening, thus ensuring processing quality.

[0039] Furthermore, the translation device 6 includes a sliding rail 61, a movable plate 62 slidably connected to the sliding rail 61, and a propulsion cylinder 63 for driving the movable plate 62 to translate. The fixed frame 22 and the connecting base 8 are mounted on the movable plate 62.

[0040] In this embodiment, when the pipeline needs to be widened, the heating mechanism 2 and the widening mechanism 3 move synchronously toward the conveying mechanism 1 under the drive of the propulsion cylinder 63 until the end of the pipeline that needs to be widened is fully inserted into the heating sleeve 21 for heating and softening. After the heating and widening is completed, the pipeline is detached from the heating mechanism 2 under the action of the propulsion cylinder 63. The heating and softening time is automatically controlled by the set program.

[0041] Furthermore, the power unit 7 includes a motor 71 and a motor mounting base 72. The motor mounting base 72 is mounted above the moving plate 62. The output end of the motor 71 is connected to the flaring mold 5 via a belt. Driven by the motor 71, the shaping wheel 51 rotates continuously, squeezing the inner wall of the pipe to achieve pipe flaring. After the pipe is heated and softened for a certain period of time, under the action of the propulsion cylinder 63, the shaping wheel 51 squeezes the pipe and rotates to flare it, which improves the processing efficiency of the flaring machine.

[0042] This utility model is a plastic pipe flaring machine. By coaxially setting the heating mechanism and the flaring mechanism, it achieves seamless connection between pipe heating and softening and flaring. The heating and flaring time is automatically controlled, avoiding the uncertainty caused by manual time control. It also avoids the problems of overheating and softening and overcooling and hardening that occur during the pipe flaring process, thus ensuring the processing quality.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plastic pipe flaring machine characterized by, The utility model provides a pipe expanding device, including the conveying mechanism (1) for conveying pipeline, still including the heating mechanism (2) and the flaring mechanism (3) of setting in turn to pipeline heating located one side of conveying mechanism (1) and the clamping mechanism (4) of pipeline clamping between conveying mechanism (1) and heating mechanism (2), and the flaring mechanism (3) includes flaring die (5), the translation device (6) of driving flaring die (5) moves and the power device (7) of driving flaring die (5) rotates, and the connecting base (8) is equipped between flaring die (5) and translation device (6), heating mechanism (2) is installed between flaring mechanism (3) and clamping mechanism (4), and the center line of flaring die (5) is coaxial with the heating center line of heating mechanism (2) and the pipeline center of conveying mechanism (1) and is arranged.

2. A plastic pipe bell and spigot machine according to claim 1 wherein, The conveying mechanism (1) includes a jacking cylinder (11) for jacking the pipeline and a plurality of support grooves (12) for supporting the bottom surface of the pipeline, the jacking cylinder (11) is arranged on one side below the pipeline, the upper surface of the support groove (12) is V-shaped, and a plurality of rollers for driving the pipeline to roll are arranged on the upper surface of the support groove (12).

3. A plastic pipe bell and spigot forming machine according to claim 1 wherein, The heating mechanism (2) is provided with a heating sleeve (21), the heating sleeve (21) is a hollow cylindrical structure, a fixing frame (22) is arranged on the outer sleeve of the heating sleeve (21), the axis of the heating sleeve (21) is coaxial with the flaring die (5), and the fixing frame (22) is parallel to the flaring mechanism (3).

4. A plastic pipe bell and spigot forming machine according to claim 1 wherein, The clamping mechanism (4) includes two clamping cylinders (41) symmetrically arranged along the center of the pipeline, each clamping cylinder (41) is movably connected with a clamping block (42), the clamping block (42) is V-shaped, and an elastic pad (43) for clamping the pipeline is arranged on the surface of the clamping block (42), and two groups of elastic pads (43) are vertically and symmetrically arranged along the pipeline.

5. A plastic pipe bell and spigot forming machine according to claim 1 wherein, The flaring die (5) includes a shaping wheel (51) for extruding the edge of the pipeline, a rotating base (52) for mounting and driving the shaping wheel (51) to rotate, a feeding cylinder (53) for pushing the shaping wheel (51) to move, and a transmission box (54) for mounting the rotating base (52) and the feeding cylinder (53), one end of the shaping wheel (51) is tapered, the outer diameter of the shaping wheel (51) is the same as the inner diameter of the flared pipeline, and the rotating base (52) is connected with the power device (7) through a belt; and the transmission box (54) is fixedly installed on the connecting base (8).

6. A plastic pipe bell and spigot forming machine according to claim 3 wherein, The translation device (6) includes a sliding rail (61), a moving plate (62) slidably connected with the sliding rail (61), and a pushing cylinder (63) for driving the moving plate (62) to translate, and the fixing frame (22) and the connecting base (8) are installed on the moving plate (62).

7. A plastic pipe bell and spigot forming machine according to claim 6 wherein, The power device (7) comprises a motor (71) and a motor mounting base (72), the motor mounting base (72) is mounted above the moving plate (62), and the output end of the motor (71) is connected with the flared die (5) through a belt.

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