Reinforced modified HDPE-IW polygonal pipe and method for manufacturing the same

Abstract

This invention discloses a reinforced modified HDPE-IW polygonal pipe and its preparation method, relating to the field of pipe manufacturing technology. It includes a device base plate, on which a production frame is sequentially arranged according to the installation position at the top of the base plate; two symmetrically distributed ring-feeding devices; two symmetrical semi-circular mounting devices corresponding to the ring-feeding devices on the same side; and a pipe-feeding device. Through the ring-feeding devices, pre-produced semi-circular reinforced pipe ribs are placed. The rotation of the semi-circular mounting devices naturally removes the semi-circular reinforced pipe ribs from the ring-feeding devices, closing the two semi-circular reinforced pipe ribs together. Simultaneously, the rotation of the semi-circular mounting devices pushes the polygonal pipe body forward, naturally fitting the two semi-circular reinforced pipe ribs onto the polygonal pipe body, achieving the setting of peaks and troughs without reducing the thickness of the polygonal pipe body itself.

Description

Technical Field

[0001] This invention relates to the field of pipe manufacturing technology, specifically to a reinforced modified HDPE-IW polygonal pipe and its manufacturing method. Background Technology

[0002] Double-wall corrugated structure sewage pipes are currently mainly used in municipal drainage and sewage systems. At present, the main raw materials used in the production of double-wall corrugated structure pipes in my country are polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP), with PVC primarily used for corrugated pipes under 500mm in diameter.

[0003] Chinese invention patent CN114889279A discloses a reinforced modified HDPE-IW polygonal pipe and its preparation method. Addressing the technical problem in existing technologies where "the increase in strength or toughness of polyethylene composite materials always comes at the expense of other properties, failing to maintain the material's strength and toughness," the patent proposes a method for manufacturing a reinforced modified HDPE-IW polygonal pipe with inner and outer layers using a hot-melt process. The outer layer is constructed as a polygonal hexagonal structure with spaced peaks and troughs along its length. Furthermore, it employs a super... High molecular weight polyethylene, metallocene polyethylene, and nanoparticle-reinforced modified recycled polyethylene composites are used as raw materials for pipes to improve their ring stiffness, ring flexibility, impact resistance, and high and low temperature performance. However, in actual production, the outer layer structure of the pipe is usually pressed onto the unshaped outer pipe by rolling, while the total amount of raw material for the outer layer remains unchanged. Therefore, the pipe wall at the trough becomes thinner after processing, making it more susceptible to damage and reducing the overall service life of the pipe. Therefore, this paper proposes to develop a reinforced modified HDPE-IW polygonal pipe and its preparation method. Summary of the Invention

[0004] The purpose of this invention is to provide an enhanced modified HDPE-IW polygonal pipe and its preparation method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a reinforced modified HDPE-IW polygonal pipe and its preparation method, the steps of which are as follows:

[0006] Step 1: Set up a device base plate as the preparation site for the reinforced modified HDPE-IW polygonal pipe. On the top of the device base plate, according to the installation position, there are a production frame, two symmetrically distributed ring feeding devices, two symmetrical semi-ring mounting devices corresponding to the ring feeding devices on the same side, and a pipe feeding device.

[0007] Step 2: Insert the polygonal tube into the production device through the side opening of the production frame, and pass it between the two ring feeding devices, so that its entry end is clamped by the two half-ring mounting devices.

[0008] Step 3: Turn on the two rotating motors set at the top of the production frame. The two rotating motors drive the corresponding two semi-ring mounting devices to rotate synchronously and clamp the polygonal tubes to move outward.

[0009] Step 4: As the two semi-ring mounting devices rotate, the side of the device that passes the corresponding ring feeding device will scrape off and carry away the semi-arc reinforcing tube edge placed on the ring feeding device, and then the two semi-arc reinforcing tube edges will be symmetrically fixed on the outside of the polygonal tube body by the two semi-ring mounting devices.

[0010] Step 5: The polygonal pipe with the semi-circular reinforcing ribs installed will be placed on the pipe feeding device and transported outwards, completing the production process.

[0011] Furthermore, the production frame described in step one includes a vertical lifting side plate and a horizontal driving top plate. One side of the lifting side plate has a through hole for the polygonal tube to pass through, and the top of the driving top plate is fixedly connected to two symmetrical rotating motors.

[0012] Furthermore, in step one, each of the semi-ring mounting devices includes a rotating support column. The bottom end of each rotating support column is rotatably connected to the device base plate, and the top end is fixedly connected to a rotating top cover. The top end of each rotating top cover is fixedly connected to the output end of the corresponding rotating motor.

[0013] Furthermore, in step one, each of the rotating top covers is a columnar structure, and its outer side is surrounded by several flat rectangular surfaces of the same size. Each of the flat rectangular sidewalls is fixedly connected to an electrical junction box, and each electrical junction box has multiple output terminals at its bottom, each of which is electrically connected to a heating element.

[0014] Furthermore, in step one, each of the rotating top covers has several compression fixing seats evenly and fixedly connected to its outer bottom end. Each compression fixing seat corresponds to a flat rectangular sidewall of the rotating top cover, and each compression fixing seat has a series of partition fixing pieces evenly and fixedly connected to its outer side.

[0015] Furthermore, in step one, a heating plate is inserted between every two adjacent separating fixing plates, and one side of each heating plate is fixedly connected to the extrusion fixing seat. The space enclosed by every two adjacent separating fixing plates and a corresponding heating plate matches a semi-circular reinforcing tube ridge.

[0016] Furthermore, in step one, each ring feeding device includes a mounting frame, each mounting frame includes a vertical connecting strut and an extended conveying back plate, each vertical connecting strut is fixedly connected to the device base plate, and each extended conveying back plate extends outward, with a conveying wheel rotatably connected to one of its sides near both ends.

[0017] Furthermore, in step one, the two conveyor wheels on the same extended conveyor back plate are connected to a conveyor belt for transmission. Each conveyor belt has multiple tube rib placement frames evenly fixed to its side. One end of each tube rib placement frame located on the upper half of the conveyor belt is snapped with a semi-circular reinforcing tube rib. The spacing between any two adjacent tube rib placement frames is the same as the width of the separating fixing plate.

[0018] Furthermore, the pipe feeding device in step one includes two symmetrical pipe clamping platforms. One of the pipe clamping platforms has several rotating rollers evenly rotatably connected to one side. All the rotating rollers are distributed in a straight line, and one end of each roller is rotatably connected to the other pipe clamping platform.

[0019] A reinforced modified HDPE-IW polygonal pipe is produced using the aforementioned preparation method.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The modified HDPE-IW polygonal pipe and its preparation method involve placing a pre-produced semi-circular reinforced pipe edge into a ring feeding device, and then naturally removing the semi-circular reinforced pipe edge from the ring feeding device by rotating the semi-circular installation device, and then closing the two semi-circular reinforced pipe edges together.

[0022] At the same time, the rotation of the semi-ring mounting device pushes the polygonal tube itself forward, and in this process, the two semi-circular reinforcing tube edges are naturally fitted onto the polygonal tube, thus achieving the setting of peaks and troughs without weakening the thickness of the polygonal tube itself. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the enhanced modified polygonal pipe of the present invention;

[0024] Figure 2 This is an isometric view of the production apparatus of the present invention;

[0025] Figure 3 This is a schematic diagram of the ring feeding device of the present invention;

[0026] Figure 4 This is a schematic diagram of the semi-ring mounting device of the present invention;

[0027] Figure 5 This is a schematic diagram of the pipe feeding device of the present invention.

[0028] In the diagram: 1. Reinforced modified polygonal pipe; 101. Semi-arc reinforced pipe rib; 102. Polygonal pipe body; 2. Production device; 201. Rotating motor; 202. Production frame; 203. Ring feeding device; 231. Conveyor belt; 232. Pipe rib placement rack; 233. Mounting rack; 234. Conveyor wheel; 204. Semi-ring mounting device; 241. Rotating support column; 242. Rotating top cover; 243. Electrical junction box; 244. Heating element; 245. Separating fixing plate; 246. Extrusion fixing seat; 205. Pipe feeding device; 251. Rotating roller; 252. Device base plate; 253. Pipe clamping table. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 invention 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 invention.

[0031] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0033] like Figures 1-5 As shown, the present invention provides a technical solution:

[0034] A reinforced modified HDPE-IW polygonal pipe and its preparation method, the steps of which are as follows:

[0035] Step 1: As Figure 2As shown, a device base plate 252 is set up as the preparation site for the reinforced modified HDPE-IW polygonal pipe. On the top of the device base plate 252, a production frame 202, two symmetrically distributed ring feeding devices 203, two symmetrical semi-ring mounting devices 204 corresponding to the same side ring feeding devices 203, and a pipe feeding device 205 are arranged in sequence according to the installation position.

[0036] Step 2: Insert the polygonal tube 102 into the production device 2 through the side opening of the production frame 202, and pass it between the two ring feeding devices 203, so that its entry end is clamped by the two semi-ring mounting devices 204.

[0037] Step 3: Turn on the two rotating motors 201 set at the top of the production frame 202. The two rotating motors 201 drive the corresponding two semi-ring mounting devices 204 to rotate synchronously and clamp the polygonal tube 102 to move outward.

[0038] Step 4: During the rotation of the two semi-ring mounting devices 204, as they pass one side of the corresponding ring feeding device 203, they will scrape off and carry away the semi-arc reinforcing tube rib 101 placed on the ring feeding device 203, and then, along with the two semi-ring mounting devices 204, they will symmetrically fix the two semi-arc reinforcing tube ribs 101 on the outside of the polygonal tube body 102.

[0039] Step 5: The polygonal tube 102 with the semi-circular reinforcing rib 101 installed will be placed on the tube feeding device 205 and transported outward, completing the production process.

[0040] like Figure 2 As shown, in step one, the production frame 202 includes a vertical lifting side plate and a horizontal driving top plate, thereby creating sufficient space between the device base plate 252 and the driving top plate to accommodate other production equipment. One side of the lifting side plate has a through hole for the polygonal tube 102 to pass through, and the polygonal tube 102 extends into the interior of the device from the outside through the through hole. Two symmetrical rotating motors 201 are fixedly connected to the top of the driving top plate. In this embodiment, these two rotating motors 201 are synchronous counter-rotating geared motors with a relatively slow speed.

[0041] like Figure 4As shown, in step one, each semi-ring mounting device 204 includes a rotating support column 241. The bottom end of each rotating support column 241 is rotatably connected to the device base plate 252, and the top end is fixedly connected to a rotating top cover 242. The top end of each rotating top cover 242 is fixedly connected to the output end of the corresponding rotating motor 201. Therefore, as the rotating motor 201 rotates, the corresponding rotating top cover 242 and rotating support column 241 will rotate accordingly. By setting the rotation direction of the rotating motor 201, the two rotating top covers 242, in their relative positions, both rotate in a direction away from the lifting side plate. In this embodiment, each rotating top cover 242 is a columnar structure, and its outer surface is surrounded by several straight rectangular surfaces of the same size. In this embodiment, the cross-section of the rotating top cover 242 is set to a regular octagon to meet the requirements of dense installation. Each straight rectangular sidewall is fixedly connected to an electrical junction box 243. Each electrical junction box 243 has multiple output terminals at its bottom, each of which is electrically connected to a heating element 244. In this embodiment, when the device is running, each electrical junction box 243 is connected to the power supply system to supply power to these heating elements 244. When the device is powered on, the heating elements 244 naturally heat up. Each rotating top cover 242 has several compression fixing seats 246 evenly fixedly connected to its outer bottom end. Each compression fixing seat 246 corresponds to a flat rectangular sidewall of the rotating top cover 242. Therefore, each compression fixing seat 246 corresponds to a power junction box 243. In this embodiment, eight sets are also provided. Each compression fixing seat 246 has a series of partition fixing pieces 245 evenly fixedly connected to its outer side. At the same time, a heating piece 244 is inserted between every two adjacent partition fixing pieces 245. One side of each heating piece 244 is fixedly connected to the compression fixing seat 246. The space enclosed by every two adjacent partition fixing pieces 245 and a corresponding heating piece 244 matches a semi-circular reinforcing tube ridge 101. In this embodiment, a certain gap is left between the two rotating top covers 242, so that the two rotating top covers 242 can be as close as possible without hindering their rotation. Since the outline of the polygonal tube 102 is a regular hexagon with rounded corners at the tip, the shape of the two semi-circular reinforcing tube edges 101 after being spliced ​​is also a regular hexagon with rounded corners at the tip. During the installation process, the edge of the partition fixing piece 245 that is used to transport the semi-circular reinforcing tube edge 101 will fit against the edge of the polygonal tube 102, so its shape is also half a regular hexagon with rounded corners at the tip. However, since the two rotating top covers 242 will not be in complete contact, the length of the upper and lower sides of each partition fixing piece 245 and its matching compression fixing seat 246 and heating plate 244 is less than half the length of the other sides.Since the two separating fixing pieces 245 are in contact with the edge of the polygonal tube 102, as the top cover 242 rotates, the polygonal tube 102 placed inside it will also move away from the production frame 202. During this process, the semi-circular reinforcing tube ridges 101 between the separating fixing pieces 245 will be in contact with the surface of the polygonal tube 102 and will be partially melted by the heating of the heating piece 244, thus being evenly bonded to the polygonal tube 102. By setting the width of the pressing fixing seat 246, when one pressing fixing seat 246 is removed from the polygonal tube 102, the next one will contact the polygonal tube 102 at equal intervals, so that the semi-circular reinforcing tube ridges 101 are evenly distributed.

[0042] like Figure 3 As shown, each ring feeding device 203 in step one includes a mounting frame 233. Each mounting frame 233 includes a vertical connecting strut and an extended conveying back plate. Each vertical connecting strut is fixedly connected to the device base plate 252. Each extended conveying back plate extends outward, and a conveying wheel 234 is rotatably connected to one end of each side near both ends. At the same time, the outer sides of the two conveying wheels 234 on the same extended conveying back plate are connected to a conveyor belt 231 for transmission. In this embodiment, the conveyor belt 231 has strong elasticity, so when the conveyor belt 231 is dragged, it can drive the conveying wheel 234 to rotate. Multiple tube rib placement frames 232 are evenly fixedly connected to the side of each conveyor belt 231. One end of each tube rib placement frame 232 located on the upper half of the conveyor belt 231 is snapped with a semi-arc reinforcing tube rib 101. The spacing between every two adjacent tube rib placement frames 232 is the same as the width of the separating fixing piece 245. In this embodiment, the semi-circular reinforcing tube 101, which is snapped onto the tube 101 placement bracket 232, and the partition fixing piece 245 on the compression fixing seat 246 form an engaging structure. Therefore, as the rotating top cover 242 rotates, the semi-circular reinforcing tube 101 will continuously snap into the two partition fixing pieces 245 and be removed from the tube 101 placement bracket 232. As the semi-circular reinforcing tube 101 is removed, because it is snapped onto the tube 101 placement bracket 232, there is a certain resistance when removing it. Therefore, the conveyor belt 231 is also rotated along with it, and the subsequent semi-circular reinforcing tube 101 will be continuously sent over. In this embodiment, in order to accommodate enough semi-circular reinforcing tube 101, the length of the conveyor belt 231 may be stretched very long. Therefore, an additional conveyor wheel 234 is also set between the two conveyor wheels 234 for support.

[0043] like Figure 5As shown, in step one, the pipe feeding device 205 includes two symmetrical pipe clamping platforms 253. One side of each platform 253 is evenly and rotatably connected to several rotating rollers 251. All the rotating rollers 251 are arranged in a straight line, and one end of each roller is rotatably connected to the other pipe clamping platform 253. Therefore, the finished pipes rest on these rotating rollers 251 and are fed out of the device.

[0044] A reinforced modified HDPE-IW polygonal pipe is produced using the above-described preparation method. In this embodiment, the reinforced modified polygonal pipe 1 is made of a composite material of ultra-high molecular weight polyethylene, metallocene polyethylene, and nanoparticle-reinforced modified recycled polyethylene. The composite material is made from raw materials including recycled PE granules, ultra-high molecular weight polyethylene, metallocene MPE, oil film particles, compatibility toughening agent, barium sulfate, melt flow modifier, nano-grade activated calcium carbonate, carbon black, silicon diffusion oil, light stabilizer, antioxidant 1010, antioxidant 168, calcium stearate, and zinc stearate.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing reinforced modified HDPE-IW polygonal pipe, characterized in that: The steps of this method are as follows: Step 1: Set up a device base plate (252) as the preparation site for the reinforced modified HDPE-IW polygonal pipe. On the top of the device base plate (252), a production frame (202), two symmetrically distributed ring feeding devices (203), two symmetrical semi-ring mounting devices (204) corresponding to the same side ring feeding devices (203) and a pipe feeding device (205) are arranged in sequence according to the installation position. Step 2: Insert the polygonal tube (102) into the production device (2) through the side opening of the production frame (202) and pass it between the two ring feeding devices (203) so that its entry end is clamped by the two half-ring mounting devices (204); Step 3: Turn on the two rotating motors (201) set at the top of the production frame (202). The two rotating motors (201) drive the corresponding two semi-ring mounting devices (204) to rotate synchronously and clamp the polygonal tube (102) to move outward. Step 4: During the rotation of the two semi-ring mounting devices (204), the semi-circular reinforcing tube edge (101) placed on the corresponding ring feeding device (203) will be scraped off and taken away by the two semi-circular mounting devices (203). The two semi-circular reinforcing tube edges (101) will be symmetrically fixed on the outside of the polygonal tube body (102) by the two semi-ring mounting devices (204). Step 5: The polygonal tube (102) with the semi-circular reinforcing rib (101) installed will be placed on the tube feeding device (205) and transported outward to complete the production; In step one, each of the semi-ring mounting devices (204) includes a rotating support (241). The bottom end of each rotating support (241) is rotatably connected to the device base plate (252), and the top end is fixedly connected to a rotating top cover (242). The top end of each rotating top cover (242) is fixedly connected to the output end of the corresponding rotating motor (201). In step one, a number of compression fixing seats (246) are uniformly fixedly connected to the outer bottom end of each rotating top cover (242). Each compression fixing seat (246) corresponds to a flat rectangular sidewall of the rotating top cover (242). A series of partition fixing pieces (245) are uniformly fixedly connected to the outer side of each compression fixing seat (246).

2. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 1, characterized in that: The production frame (202) in step one includes a vertical lifting side plate and a horizontal driving top plate. One side of the lifting side plate is provided with a through hole for the polygonal tube (102) to pass through. Two symmetrical rotating motors (201) are fixedly connected to the top of the driving top plate.

3. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 1, characterized in that: In step one, each of the rotating top covers (242) is a columnar structure, and its outer side is surrounded by several flat rectangular surfaces of the same size. Each of the flat rectangular side walls is fixedly connected to an electrical box (243). Each electrical box (243) has multiple output terminals at its bottom end, and each is electrically connected to a heating element (244).

4. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 1, characterized in that: In step one, a heating plate (244) is inserted between every two adjacent partition fixing plates (245). One side of each heating plate (244) is fixedly connected to the extrusion fixing seat (246). The space enclosed by every two adjacent partition fixing plates (245) and a corresponding heating plate (244) is matched with a semi-circular reinforcing tube edge (101).

5. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 1, characterized in that: In step one, each ring feeding device (203) includes a mounting frame (233), each mounting frame (233) includes a vertical connecting strut and an extended conveying back plate. Each vertical connecting strut is fixedly connected to the device base plate (252). Each extended conveying back plate extends outward, and a conveying wheel (234) is rotatably connected to one side near both ends.

6. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 5, characterized in that: In step one, the two conveyor wheels (234) on the same extended conveyor back plate are connected to a conveyor belt (231) for transmission. Each conveyor belt (231) has multiple tube rib placement brackets (232) evenly fixedly connected to its side. Each tube rib placement bracket (232) located on the upper half of the conveyor belt (231) has a semi-circular reinforcing tube rib (101) snapped at one end. The spacing between each two adjacent tube rib placement brackets (232) is the same as the width of the separating fixing piece (245).

7. The method for preparing reinforced modified HDPE-IW polygonal pipe according to claim 1, characterized in that: The pipe feeding device (205) in step one includes two symmetrical pipe clamping platforms (253). One of the pipe clamping platforms (253) has several rotating rollers (251) evenly rotatably connected to one side. All the rotating rollers (251) are flatly distributed, and one end of them is rotatably connected to the other pipe clamping platform (253).

8. A reinforced modified HDPE-IW polygonal pipe, characterized in that: The product is manufactured using the preparation method described in any one of claims 1-7.

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