Manufacturing method of plastic PVC (polyvinyl chloride) pipeline and pipeline thereof

Abstract

The invention discloses a plastic PVC pipeline manufacturing method and a pipeline thereof, and relates to the technical field of pipeline extrusion injection molding, and the method comprises the following steps: S1, raw material preparation: selecting required plastic master batches according to pipeline production requirements, putting the plastic master batches into the inner side of a feeding plastic extruding machine, carrying out heat exchange through a heat exchange barrel, heating the plastic master batches, and carrying out extrusion molding; and S2, feeding and exhausting, specifically, extrusion molding is conducted on the position of a double-connection treatment sleeve through a bearing limiting frame and a feeding extrusion molding machine, internal exhausting treatment is conducted through a vacuum pipe frame and an air inlet and outlet pump, and feeding and exhausting are achieved. And meanwhile, the problem that due to the fact that the pipeline is not cooled at the forming position of the pipeline, the pipeline deforms due to the influence of gravity is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe extrusion injection molding, and particularly to a manufacturing method of a plastic PVC pipe and the pipe thereof. Background Art

[0002] Plastic PVC pipes are plastic pipes widely used in fields such as construction, municipal engineering, and agriculture. They have characteristics such as being lightweight, corrosion-resistant, and low-cost. Their main advantages include corrosion resistance, easy installation, low cost, long service life, and low fluid resistance. Their main application fields include building water supply and drainage, agricultural irrigation, electrical conduit pipes, industrial pipes, municipal engineering, communication pipes, etc.

[0003] In the patent with the application number 202411391088.4, an extrusion molding device for the production and processing of corrugated pipes. This patent directly forms sockets and spigots at both ends of the steel belt pipe by injecting molten plastic raw materials, without the need for additional cutting process for the steel belt pipe, thereby improving the production and molding efficiency of the steel belt corrugated pipe, and eliminating the waste problem of the materials after turning and forming again during the manufacturing process.

[0004] However, in the prior art when producing pipes, there are multiple feeding positions and the incoming raw materials are not integrated, resulting in gaps between the raw materials, where a large amount of air is easily accumulated, leading to pits on the pipe surface and affecting the quality of the pipe. And during continuous production, the pipe is not cooled at the pipe forming position, resulting in the pipe still being in a softened state after leaving the die position, causing the pipe to collapse downward under the influence of gravity, deforming the pipe and affecting the product quality. Summary of the Invention

[0005] The present invention provides a manufacturing method of a plastic PVC pipe and the pipe thereof, which can effectively solve the problems in the above-mentioned background art that in the prior art when producing pipes, there are multiple feeding positions and the incoming raw materials are not integrated, resulting in gaps between the raw materials, where a large amount of air is easily accumulated, leading to pits on the pipe surface and affecting the quality of the pipe. And during continuous production, the pipe is not cooled at the pipe forming position, resulting in the pipe still being in a softened state after leaving the die position, causing the pipe to collapse downward under the influence of gravity, deforming the pipe and affecting the product quality.

[0006] To achieve the above object, the present invention provides the following technical solution: A manufacturing method of a plastic PVC pipe, including the following steps: S1. Raw material preparation: Select the required plastic masterbatch according to the pipe production requirements, put the plastic masterbatch into the inner side of the feeding extruder, and heat the plastic masterbatch through heat exchange in the heat exchange barrel to achieve raw material treatment; S2. Feed and exhaust air: Extrude plastic to the position of the double-connection treatment sleeve through the load-bearing limit frame and the feed extruder, and exhaust the internal air through the vacuum tube frame and the air inlet and outlet pump to achieve feed and exhaust air; S3. Press and cool: Drive the press ring plate by the compaction hydraulic cylinder to push and compact the extruded plastic. Inject cooling liquid to the positions of the arc-shaped inner mold and the conduction inner replacement column through the special-shaped inlet and outlet pipes, the cooling injection pipe frame, the interception and recovery sleeve, the operation water inlet pipe and the extraction pump to achieve pipe compaction and forming and cooling treatment; S4. Traction and cutting: Drive the pipe to be discharged externally through the traction moving frame and the electric traction wheel. Position and support the pipe by the negative pressure adsorption sleeve, and drive the electric heating pressing frame by the pressing hydraulic cylinder to press and form both ends of the pipe to achieve pipe shaping treatment.

[0007] According to the above technical solution, the load-bearing limit frame is provided with a split extrusion and connection component; The split extrusion and connection component includes a cooling circulation tank; A cooling circulation tank is installed on one side of the top end of the load-bearing limit frame. An integrated support frame is clamped on the top end of the cooling circulation tank. A forming outer mold is installed on one side of the top end of the integrated support frame. A forming inlet and outlet cavity is opened inside the forming outer mold; An arc-shaped inner mold is installed at one end of the forming outer mold corresponding to the position of the forming inlet and outlet cavity. A conduction inner replacement column is clamped at one end of the arc-shaped inner mold. A conduction outer replacement column is installed at the position corresponding to the forming outer mold on the top end of the integrated support frame; A number of compaction hydraulic cylinders are equidistantly clamped at one end of the forming outer mold. One end of the multiple compaction hydraulic cylinders is clamped with a compaction ring plate. A number of feed connection pipes are equidistantly penetrated and connected at one end of the compaction ring plate. An isolation operation sleeve is clamped inside the feed connection pipe. An isolation electric push rod is embedded and installed inside the isolation operation sleeve. One end of the isolation electric push rod is clamped with an isolation sliding frame. A storage double cavity frame is clamped at one end of the integrated support frame. A processing moving frame is symmetrically slidably connected at one end of the storage double cavity frame. An inlet and outlet push plate is welded at one end of the processing moving frame corresponding to the position of the storage double cavity frame; Connecting electromagnetic columns are symmetrically clamped at one end of the compaction ring plate. Linkage gears are symmetrically rotatably connected to the side ends of the storage double cavity frame. Linkage racks are installed at the side ends of the storage double cavity frame and one end of the processing moving frame. A double-hole combination plate is welded at one end of one of the linkage racks. Connecting seal pipes are equidistantly and symmetrically penetrated and connected at one end of the storage double cavity frame.

[0008] According to the above technical solution, the cross-sections of the side ends of the forming inlet and outlet cavity and the arc-shaped inner mold are elliptical. The side end of the compaction ring plate is slidably fitted with the side end of the forming inlet and outlet cavity. The isolation sliding frame is slidably combined with the feed connection pipe.

[0009] According to the above technical solution, a number of water injection heat exchange cavities are equidistantly arranged inside the forming outer mold, the arc-shaped inner mold, the conduction inner conversion column, and the conduction outer conversion column. A number of special-shaped inlet and outlet pipes are equidistantly clamped inside the water injection heat exchange cavities. One end of two of the special-shaped inlet and outlet pipes is connected to an outer discharge fixed pipe through a swivel joint; One side of the top of the cooling circulation tank is clamped with an interception limit box. One end of the cooling circulation tank is clamped with a heat flow collection box. One end of the interception limit box is connected through an injection treatment pipe corresponding to the position of the water injection heat exchange cavity. A ring-shaped impact pipe rack is embedded and installed on the side end of the interception limit box; Heat preservation electric heaters are installed inside both the forming outer mold and the storage double cavity frame. Double connection treatment sleeves are symmetrically penetrated through the bottom end of the storage double cavity frame. Restriction valves are symmetrically embedded and installed on the side ends of the double connection treatment sleeves; Cooling injection pipe racks are connected through the side ends of the arc-shaped inner mold and the conduction inner conversion column. An interception recovery sleeve is sleeved on the side end of the cooling injection pipe rack. One end of the interception recovery sleeve is connected through an operation water inlet pipe corresponding to the position of the water injection heat exchange cavity; One end of the double connection treatment sleeve is installed with a feeding extrusion machine. A heat replacement barrel is sleeved on the top of the side end of the feeding extrusion machine. One side of the bottom end of the heat replacement barrel is connected through an extraction injection pipe. A reflux operation pipe is connected through the top of the side end of the heat replacement barrel; Vacuum pipe racks are connected through between the forming outer mold and the storage double cavity frame, and between the double connection treatment sleeve and the feeding extrusion machine. One end of the integrated support frame and one end of the heat flow collection box corresponding to the position of the vacuum pipe rack, and one end of the interception recovery sleeve are all installed with air inlet and outlet pumps through motor bases. Elastic air bags are clamped on both sides of one end of the interception recovery sleeve corresponding to the position of the air inlet and outlet pumps; A number of sealed electric push rods are equidistantly clamped inside the vacuum pipe rack. An arc-shaped sealing block is installed at one end of the sealed electric push rod. Extraction pumps are installed through motor bases at one end of the cooling circulation tank, the interception limit box, the heat flow collection box, and the interception recovery sleeve.

[0010] According to the above technical solution, one end of the outer discharge fixed pipe is installed through one end of the heat flow collection box. One end of the ring-shaped impact pipe rack is installed through one end of the cooling circulation tank. One of the outer discharge fixed pipes is connected through the cooling injection pipe rack.

[0011] According to the above technical solution, one of the linkage racks is welded and combined with the processing moving frame. The feeding connecting pipe is slidably connected to the connecting sealing pipe. One ends of the injection treatment pipe, the ring-shaped impact pipe rack, the cooling injection pipe rack, the operation water inlet pipe, and the extraction injection pipe are all connected to one end of the extraction pump through a swivel joint.

[0012] According to the above technical solution, one end of the reflux operation pipe is installed through one end of the cooling circulation tank. The air inlet and outlet pump is connected to the vacuum pipe rack through a swivel joint; The input ends of the compaction hydraulic cylinder, isolation electric push rod, connecting electromagnetic column, heat preservation electric heater, limiting valve, feeding extrusion machine, air inlet and outlet pump, sealing electric push rod and extraction pump are all electrically connected to the output end of an external controller; The input end of the external controller is electrically connected to the output end of an external power supply.

[0013] According to the above technical solution, the load-bearing limit frame is provided with a separated two-way component; The separated two-way component includes a traction moving frame; One end of the load-bearing limit frame is installed with a traction moving frame. A number of electric traction wheels are equidistantly installed at the top end of the traction moving frame. A number of transposition electric slide rails are equidistantly and symmetrically embedded and installed at the side end of the traction moving frame. One end of multiple transposition electric slide rails is connected to a lifting special-shaped plate through a slide rail seat. One end of the lifting special-shaped plate is installed with an adsorption treatment pump through a motor seat. A negative pressure adsorption sleeve is installed at the top end of the lifting special-shaped plate. One side of the bottom end of the negative pressure adsorption sleeve is connected to an adsorption treatment pipe through a connector; A cutting treatment sleeve is clamped inside the traction moving frame. A positioning combination sleeve is welded at one end inside the cutting treatment sleeve. A circular electric slide rail is embedded and installed inside the cutting treatment sleeve. One end of the circular electric slide rail is connected to an operation moving frame through a slide rail seat. A number of downward moving electric push rods are equidistantly installed at the bottom end of the operation moving frame; The bottom ends of multiple downward moving electric push rods are clamped with a combined connection sleeve. One end of the combined connection sleeve is installed with a cutting motor through a motor seat. One end of the output shaft of the cutting motor is clamped with a cutting knife. A slag cleaning scraper is welded at one end of the operation moving frame; Alignment electric slide rails are installed at both ends of the traction moving frame. A load-bearing hydraulic cylinder is installed at one end of the alignment electric slide rail through a slide rail seat. An integrated lifting frame is installed at the top end of the load-bearing hydraulic cylinder. Pressing hydraulic cylinders are symmetrically clamped inside the integrated lifting frame. One end of two pressing hydraulic cylinders is installed with an electric heating pressing frame.

[0014] According to the above technical solution, one end of the adsorption treatment pipe is connected to one end of the adsorption treatment pump through a connector. The side ends of the operation moving frame and the slag cleaning scraper are attached to the side end of the cutting treatment sleeve; The input ends of the electric traction wheels, transposition electric slide rails, circular electric slide rails, downward moving electric push rods, cutting motors, alignment electric slide rails, load-bearing hydraulic cylinders, pressing hydraulic cylinders and electric heating pressing frames are all electrically connected to the output end of an external controller.

[0015] A plastic PVC pipe, a pipe manufactured by the manufacturing method of a plastic PVC pipe according to the above technical solution.

[0016] Compared with the prior art, the beneficial effects of the present invention: 1. A split extrusion and connection component is provided. The compaction hydraulic cylinder drives the compaction annular plate, the feed connection pipe, and the connection electromagnetic column to move. The connection electromagnetic column is magnetically coupled with the double-hole combined plate. The double-hole combined plate drives the linkage rack to move, and the linkage rack drives the linkage gear to rotate, thereby driving the linkage rack, the processing moving frame, and the inlet and outlet pushing plates to move. By using the reverse movement of the compaction annular plate and the inlet and outlet pushing plates, the synchronous processing of feeding and discharging is realized. The extrusion plastic is injected into the forming inlet and outlet cavity through the feed connection pipe and the matching connection sealing pipe. Through reciprocating feeding processing and switching the feeding position, continuous feeding is realized. The extrusion plastic is injected into the storage double cavity frame by the feed extruder and the double-connection processing sleeve. The vacuum tube frame and the inlet and outlet air pump perform exhaust processing on the inside of the forming outer mold, the storage double cavity frame, the feed extruder, and the double-connection processing sleeve. The compaction annular plate is used to compact the extrusion plastic, so that when extruding and forming the pipe, the air between the extrusion plastics can be effectively discharged, avoiding obvious bubbles in the extrusion plastics, and through arc feeding and three-stage linkage continuous feeding processing, combined with hydraulic extrusion feeding, the feeding speed is increased, thereby effectively ensuring the production efficiency and product quality; The inside and outside of the pipe are simultaneously sprayed and cooled through the annular impact pipe frame and the cooling injection pipe frame. The extraction pump, the injection processing pipe, the operation water inlet pipe, and the special-shaped inlet and outlet pipe are used to inject the cooling liquid into the inner side of the water injection heat exchange cavity in the forming outer mold, the arc-shaped inner mold, the conduction inner heat exchange column, and the conduction outer heat exchange column. And through multiple groups of connected liquid inlet cooperation, continuous heat exchange and cooling are realized. And through the cooling liquid flowing gradually from low temperature to high temperature to the pipe forming position, by reducing the temperature difference during the pipe cooling and forming, the situation of excessive internal stress in the pipe caused by too fast cooling is reduced. And while using the forming outer mold, the arc-shaped inner mold, the conduction inner heat exchange column, and the conduction outer heat exchange column to perform contact heat exchange on the pipe, support and guide are carried out, so that the pipe has sufficient shaping time, avoiding the situation of collapse after extrusion forming due to incomplete shaping, and improving the shaping quality of the pipe appearance; Through three-stage feeding cooperation, using the extruder to continuously extrude and feed and the double-chamber storage to switch feeding, ensuring that the amount of each feeding is equal and sufficient, and combined with negative pressure exhaust and extrusion exhaust, through continuous and connected cooling cooperation, the pipe is continuously cooled at different temperatures. At the same time, two groups of support and guidance are used to limit its shaping, effectively solving the problems in the prior art that there are multiple positions for feeding and the raw materials entering are not integrated, there are a large number of bubbles in the raw materials, resulting in pits on the pipe surface. At the same time, it solves the problem that the pipe is not cooled at the pipe forming position, resulting in deformation of the pipe under the influence of gravity. When producing the pipe, it can effectively reduce the pipes with bubbles and holes on the surface, and at the same time ensure the overall production efficiency and improve the product quality.

[0017] 2. It is equipped with a bidirectional component. The circular electric slide rail drives the operating mobile frame, the positioning combination sleeve limits the pipeline, and the downward electric push rod drives the combination connection sleeve to move. The cutting motor drives the cutting knife to rotate, and the cutting knife is used to cut the pipeline. The negative pressure adsorption sleeve, adsorption treatment pipe and adsorption treatment pump are used to adsorb and position the side end of the pipeline to achieve circular cutting. The scraper is used to scrape the debris generated by the cutting. The circular linkage and multi-position positioning of the cutting can reduce the amplitude of the pipeline shaking during cutting, and avoid the occurrence of cutting tilt. The slag removal and cutting are processed synchronously to reduce the impact of the debris on the pipeline and improve the flatness and verticality of the pipeline end face. The electric traction wheel of the traction moving frame drives the pipeline to move outward, the positioning electric slide rail drives the load-bearing hydraulic cylinder to move, the load-bearing hydraulic cylinder drives the integrated lifting frame to move, and the pressing hydraulic cylinder drives the electric hot pressing frame to perform electric hot extrusion injection molding on the inside of the pipeline, changing the inner diameter of both ends of the pipeline, and adjusting the shape of the pipeline as needed. Through two-way linkage, the end faces of the pipeline after cutting and the pipeline during cutting are pressed and shaped, thereby realizing secondary processing of the pipeline and shaping the end face. Cutting and shaping are carried out simultaneously, reducing operation waiting time and increasing production speed.

[0018] In summary, by cooperating with each other through the separate extrusion connecting components and the separate bidirectional components, continuous production is utilized, and the pipes are separated and cut while waiting for extrusion injection molding. The waiting time is used to extend the cooling time of the pipes, thereby reducing quality problems of the pipes due to bubbles or insufficient curing without affecting production efficiency, and effectively improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture: Figure 1 It is a schematic flow chart of the method of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the extrusion connection component of the present invention; Figure 4 It is a schematic diagram of the installation structure of the conduction outer exchange column of the present invention; Figure 5 It is a schematic diagram of the installation structure of the special-shaped inlet and outlet pipes of the present invention; Figure 6 It is a schematic diagram of the installation structure of the compacting annular plate of the present invention; Figure 7 It is a schematic diagram of the installation structure of the heat exchange barrel of the present invention; Figure 8 is a schematic structural diagram of the split two-way component of the present invention; Figure 9 is a schematic installation structure diagram of the operation moving frame of the present invention; Figure 10 is a schematic installation structure diagram of the electrothermal pressing frame of the present invention; Reference numerals in the figure: 1, load-bearing limit frame; 2, split extrusion and communication component; 201, cooling circulation tank; 202, integrated support frame; 203, forming outer mold; 204, forming inlet and outlet cavity; 205, arc-shaped inner mold; 206, conduction inner heat exchange column; 207, conduction outer heat exchange column; 208, water injection heat exchange cavity; 209, special-shaped inlet and outlet pipe; 210, outer discharge fixed pipe; 211, interception limit box; 212, heat flow collection box; 213, injection treatment pipe; 214, annular impact pipe rack; 215, compaction hydraulic cylinder; 216, compaction annular plate; 217, feed connection pipe; 218, isolation operation sleeve; 219, isolation electric push rod; 220, isolation sliding frame; 221, storage double cavity frame; 222, treatment moving frame; 223, inlet and outlet push plate; 224, connection electromagnetic column; 225, linkage gear; 226, linkage rack; 227, double-hole combination plate; 228, heat preservation electric heater; 229, double-connection treatment sleeve; 230, limiting valve; 231, cooling injection pipe rack; 232, interception recovery sleeve; 233, operation water inlet pipe; 234, feed extruder; 235, heat exchange barrel; 236, extraction injection pipe; 237, reflux operation pipe; 238, vacuum pipe rack; 239, inlet and outlet air pump; 240, elastic airbag; 241, sealing electric push rod; 242, arc-shaped sealing block; 243, extraction pump; 244, connection sealing pipe; 3, split two-way component; 301, traction moving frame; 302, electric traction wheel; 303, transposition electric slide rail; 304, lifting special-shaped plate; 305, adsorption treatment pump; 306, negative pressure adsorption sleeve; 307, adsorption treatment pipe; 308, cutting treatment sleeve; 309, positioning combination sleeve; 310, annular electric slide rail; 311, operation moving frame; 312, downward electric push rod; 313, combined connection sleeve; 314, cutting motor; 315, cutting knife; 316, slag cleaning scraper; 317, alignment electric slide rail; 318, bearing hydraulic cylinder; 319, integrated lifting frame; 320, pressing hydraulic cylinder; 321, electrothermal pressing frame. Detailed implementation manners

[0021] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0022] Embodiment: As Figures 1-10As shown in the figure, the present invention provides a technical solution, a manufacturing method of a plastic PVC pipe, comprising the following steps: S1. Raw material preparation: Select the required plastic masterbatch according to the pipeline production requirements, put the plastic masterbatch into the inner side of the feeding extruder 234, exchange heat through the heat exchange barrel 235, drive the hot coolant to circulate through the extraction injection pipe 236 and the reflux operation pipe 237, and heat the plastic masterbatch to realize raw material treatment; S2. Feeding and exhausting: Extrude through the load-bearing limit frame 1 and the feeding extruder 234 to the position of the double-joint treatment sleeve 229. The extruded plastic enters the inner side of the storage double cavity frame 221 along the double-joint treatment sleeve 229. Through the cooperation of the linkage gear 225 and the linkage rack 226, drive the treatment moving frame 222 and the inlet and outlet pushing plate 223 to push the extruded plastic along the feeding connecting pipe 217 and the connecting sealing pipe 244 into the inner side of the forming inlet and outlet cavity 204, and perform exhaust treatment on the inside by the vacuum tube rack 238 and the inlet and outlet air pump 239 to realize feeding and exhausting; S3. Pressing and cooling: Drive the pressing annular plate 216 by the pressing hydraulic cylinder 215 to push and press the extruded plastic. Inject the coolant into the water injection heat exchange cavity 208 at the positions of the forming outer mold 203 and the conduction outer heat exchange column 207 through the special-shaped inlet and outlet pipe 209, the annular impact pipe rack 214, the interception limit box 211, the injection treatment pipe 213 and the extraction pump 243. Inject the coolant into the positions of the arc-shaped inner mold 205 and the conduction inner heat exchange column 206 through the special-shaped inlet and outlet pipe 209, the cooling injection pipe rack 231, the interception recovery sleeve 232, the operation water inlet pipe 233 and the extraction pump 243 to realize pipeline pressing and forming and cooling treatment; S4. Traction and cutting: Drive the pipeline to be discharged outside by the traction moving frame 301 and the electric traction wheel 302. Position and support the pipeline by the negative pressure adsorption sleeve 306. Drive the operation moving frame 311 to rotate and displace by the annular electric slide rail 310. Drive the cutting knife 315 to cut the pipeline by the cutting motor 314. Drive the integrated lifting frame 319 to lift by the bearing hydraulic cylinder 318. Drive the electric heating pressing frame 321 to press and form the two ends of the pipeline by the pressing hydraulic cylinder 320 to realize pipeline shaping treatment.

[0023] The load-bearing limit frame 1 is provided with a sub-extrusion connection component 2; The split extrusion and connection component 2 includes a cooling circulation tank 201, an integrated support frame 202, a forming outer mold 203, a forming inlet and outlet cavity 204, an arc-shaped inner mold 205, a conduction inner heat exchange column 206, a conduction outer heat exchange column 207, a water injection heat exchange cavity 208, a special-shaped inlet and outlet pipe 209, an outer discharge fixed pipe 210, an interception and limit box 211, a heat flow collection box 212, an injection treatment pipe 213, an annular impact pipe rack 214, a compaction hydraulic cylinder 215, a compaction annular plate 216, a feed connection pipe 217, an isolation operation sleeve 218, an isolation electric push rod 219, an isolation sliding frame 220, a storage double cavity frame 221, a treatment moving frame 222, an inlet and outlet push plate 223, a connection electromagnetic column 224, a linkage gear 225, a linkage rack 226, a double-hole combination plate 227, a heat preservation electric heater 228, a double-connection treatment sleeve 229, a limiting valve 230, a cooling injection pipe rack 231, an interception and recovery sleeve 232, an operation inlet water pipe 233, a feed extruder 234, a heat replacement barrel 235, an extraction injection pipe 236, a reflux operation pipe 237, a vacuum pipe rack 238, an inlet and outlet air pump 239, an elastic airbag 240, a sealing electric push rod 241, an arc-shaped sealing block 242, an extraction pump 243 and a connection sealing pipe 244; One side of the top end of the load-bearing limit frame 1 is installed with a cooling circulation tank 201. The top end of the cooling circulation tank 201 is clamped with an integrated support frame 202. One side of the top end of the integrated support frame 202 is installed with a forming outer mold 203. A forming inlet and outlet cavity 204 is arranged inside the forming outer mold 203. One end of the forming outer mold 203 is provided with an arc-shaped inner mold 205 corresponding to the position of the forming inlet and outlet cavity 204. One end of the arc-shaped inner mold 205 is clamped with a conduction inner heat exchange column 206. The integrated support frame 202 is installed with a conduction outer heat exchange column 207 corresponding to the position of the forming outer mold 203 at the top end; A number of water injection heat exchange cavities 208 are equidistantly arranged inside the forming outer mold 203, the arc-shaped inner mold 205, the conduction inner heat exchange column 206 and the conduction outer heat exchange column 207. A number of special-shaped inlet and outlet pipes 209 are equidistantly clamped inside the water injection heat exchange cavities 208. One end of two of the special-shaped inlet and outlet pipes 209 is connected to an outer discharge fixed pipe 210 through a swivel joint. One end of the outer discharge fixed pipe 210 penetrates and is installed at one end of the heat flow collection box 212, realizing the steady discharge of the coolant and the heat reflux use of the coolant. One side of the top end of the cooling circulation tank 201 is clamped with an interception and limit box 211. One end of the cooling circulation tank 201 is clamped with a heat flow collection box 212. One end of the interception and limit box 211 is connected through the injection treatment pipe 213 corresponding to the position of the water injection heat exchange cavity 208. The annular impact pipe rack 214 is embedded and installed on the side end of the interception and limit box 211. One end of the annular impact pipe rack 214 penetrates and is installed at one end of the cooling circulation tank 201, realizing the reflux treatment of the coolant; At one end of the forming outer mold 203, a number of compaction hydraulic cylinders 215 are clamped at equal intervals. At one end of the multiple compaction hydraulic cylinders 215, a compaction annular plate 216 is clamped. The cross-sections of the side ends of the forming inlet and outlet cavity 204 and the arc-shaped inner mold 205 are elliptical. The side end of the compaction annular plate 216 is slidably attached to the side end of the forming inlet and outlet cavity 204 to realize the guiding and extrusion of the extruded plastic. And through the elliptical guiding, the waiting time of the extruded plastic is reduced, and the temperature and stability of the feeding are ensured. At one end of the compaction annular plate 216, a number of feeding communication pipes 217 are connected through at equal intervals. An isolation operation sleeve 218 is clamped inside the feeding communication pipe 217. An isolation electric push rod 219 is embedded and installed inside the isolation operation sleeve 218. At one end of the isolation electric push rod 219, an isolation sliding frame 220 is clamped. The isolation sliding frame 220 is slidably combined with the feeding communication pipe 217 to realize a stable opening and closing process and ensure a stable switching process of the feeding and discharging. At one end of the integrated support frame 202, a storage double cavity frame 221 is clamped. At one end of the storage double cavity frame 221, a processing moving frame 222 is symmetrically slidably connected. At one end of the processing moving frame 222, an inlet and outlet pushing plate 223 is welded at the position corresponding to the storage double cavity frame 221. At one end of the compaction annular plate 216, connection electromagnetic columns 224 are symmetrically clamped. At the side end of the storage double cavity frame 221, linkage gears 225 are symmetrically rotatably connected. Linkage racks 226 are installed at the side end of the storage double cavity frame 221 and one end of the processing moving frame 222. One of the linkage racks 226 is welded and combined with the processing moving frame 222 for convenient linkage transmission. At one end of one of the linkage racks 226, a double-hole combined plate 227 is welded. At one end of the storage double cavity frame 221, connection seal pipes 244 are connected through at equal intervals and symmetrically. The feeding communication pipe 217 is slidably connected with the connection seal pipe 244 to realize the feeding penetration. Heat preservation electric heaters 228 are installed inside the forming outer mold 203 and the storage double cavity frame 221. At the bottom end of the storage double cavity frame 221, double-connection processing sleeves 229 are symmetrically penetrated. Restriction valves 230 are symmetrically embedded and installed at the side end of the double-connection processing sleeves 229; Cooling injection pipe racks 231 are connected through the side ends of the arc-shaped inner mold 205 and the conduction inner conversion column 206. One of the outer discharge fixed pipes 210 is connected through the cooling injection pipe racks 231 to ensure the stable operation of the drainage. An interception recovery sleeve 232 is sleeved at the side end of the cooling injection pipe racks 231. At one end of the interception recovery sleeve 232, an operation water inlet pipe 233 is connected through at the position corresponding to the water injection heat exchange cavity 208. A feeding extruder 234 is installed at one end of the double-connection processing sleeve 229. A heat exchange barrel 235 is sleeved at the top of the side end of the feeding extruder 234. At one side of the bottom end of the heat exchange barrel 235, a pumping injection pipe 236 is connected through. One ends of the injection processing pipe 213, the annular impact pipe rack 214, the cooling injection pipe racks 231, the operation water inlet pipe 233 and the pumping injection pipe 236 are all connected to one end of the extraction pump 243 through a swivel joint to realize the inlet and outlet water treatment. A reflux operation pipe 237 is connected through at the top of the side end of the heat exchange barrel 235. One end of the reflux operation pipe 237 is installed through one end of the cooling circulation tank 201 to realize the recycling of the coolant; A vacuum tube frame 238 is connected through between the forming outer mold 203 and the storage double-chamber frame 221, and between the double-connection processing sleeve 229 and the feeding extruder 234. One end of the integrated support frame 202 and one end of the heat flow collection box 212 at the position corresponding to the vacuum tube frame 238, and one end of the interception recovery sleeve 232 are all installed with air inlet and outlet pumps 239 through motor bases. The air inlet and outlet pumps 239 are connected to the vacuum tube frame 238 through adapters to realize air pressure control for exhaust and ensure the stability of the internal air pressure. Elastic air bags 240 are clamped on both sides of one end of the interception recovery sleeve 232 at the positions corresponding to the air inlet and outlet pumps 239. A number of sealed electric push rods 241 are equidistantly clamped inside the vacuum tube frame 238. One end of the sealed electric push rod 241 is installed with an arc-shaped sealing block 242. One end of the cooling circulation box 201, the interception limit box 211, the heat flow collection box 212 and the interception recovery sleeve 232 are all installed with extraction pumps 243 through motor bases; For the stable operation of the equipment, the input ends of the compaction hydraulic cylinder 215, the isolation electric push rod 219, the connecting electromagnetic column 224, the heat preservation electric heater 228, the limiting valve 230, the feeding extruder 234, the air inlet and outlet pumps 239, the sealed electric push rods 241 and the extraction pumps 243 are all electrically connected to the output end of the external controller; The input end of the external controller is electrically connected to the output end of the external power supply.

[0024] The load-bearing limit frame 1 is provided with a split two-way component 3; The split two-way component 3 includes a traction moving frame 301, electric traction wheels 302, a transposition electric slide rail 303, a lifting special-shaped plate 304, an adsorption treatment pump 305, a negative pressure adsorption sleeve 306, an adsorption treatment pipe 307, a cutting treatment sleeve 308, a positioning combination sleeve 309, a circular electric slide rail 310, an operation moving frame 311, a downward moving electric push rod 312, a combined connection sleeve 313, a cutting motor 314, a cutting knife 315, a slag cleaning scraper 316, a positioning electric slide rail 317, a bearing hydraulic cylinder 318, an integrated lifting frame 319, a pressing hydraulic cylinder 320 and an electric heating pressing frame 321; One end of the load-bearing limit frame 1 is installed with a traction moving frame 301. A number of electric traction wheels 302 are equidistantly installed at the top of the traction moving frame 301. A number of transposition electric slide rails 303 are equidistantly and symmetrically embedded and installed on the side end of the traction moving frame 301. One end of multiple transposition electric slide rails 303 is connected to a lifting special-shaped plate 304 through a slide rail seat. One end of the lifting special-shaped plate 304 is installed with an adsorption treatment pump 305 through a motor base. A negative pressure adsorption sleeve 306 is installed at the top of the lifting special-shaped plate 304. One side of the bottom end of the negative pressure adsorption sleeve 306 is connected to an adsorption treatment pipe 307 through an adapter. One end of the adsorption treatment pipe 307 is connected to one end of the adsorption treatment pump 305 through an adapter to realize adsorption connection and fixation; Inside the traction moving frame 301, a cutting treatment sleeve 308 is clamped. At one end inside the cutting treatment sleeve 308, a positioning combination sleeve 309 is welded. Inside the cutting treatment sleeve 308, an annular electric slide rail 310 is embedded. One end of the annular electric slide rail 310 is connected to an operation moving frame 311 through a slide rail seat. The side ends of the operation moving frame 311 and the slag cleaning scraper 316 are in contact with the side end of the cutting treatment sleeve 308 to ensure the effect of slag cleaning treatment. At the bottom end of the operation moving frame 311, a number of downward electric push rods 312 are equidistantly installed. At the bottom ends of the multiple downward electric push rods 312, a combined connection sleeve 313 is clamped. At one end of the combined connection sleeve 313, a cutting motor 314 is installed through a motor seat. At one end of the output shaft of the cutting motor 314, a cutting knife 315 is clamped. At one end of the operation moving frame 311, a slag cleaning scraper 316 is welded; At both ends of the traction moving frame 301, alignment electric slide rails 317 are installed. One end of the alignment electric slide rails 317 is installed with a bearing hydraulic cylinder 318 through a slide rail seat. At the top end of the bearing hydraulic cylinder 318, an integrated lifting frame 319 is installed. Inside the integrated lifting frame 319, pressing hydraulic cylinders 320 are symmetrically clamped. At one end of the two pressing hydraulic cylinders 320, an electric heating pressing frame 321 is installed; For the stable operation of the equipment, the input ends of the electric traction wheel 302, the transposition electric slide rail 303, the annular electric slide rail 310, the downward electric push rod 312, the cutting motor 314, the alignment electric slide rail 317, the bearing hydraulic cylinder 318, the pressing hydraulic cylinder 320 and the electric heating pressing frame 321 are all electrically connected to the output end of an external controller.

[0025] A plastic PVC pipe, a pipe manufactured according to the manufacturing method of a plastic PVC pipe according to the above technical solution.

[0026] The working principle and usage process of the present invention: When manufacturing a PVC pipe, the staff puts plastic masterbatch into the inside of the feeding extruder 234. The feeding extruder 234 melts the plastic masterbatch and extrudes it into the double-connection treatment sleeve 229. When the extruded plastic enters the double-connection treatment sleeve 229, the sealing electric push rod 241 drives the arc-shaped sealing block 242 to move along the vacuum tube frame 238 and enter the inside of the double-connection treatment sleeve 229. At this time, the vacuum tube frame 238 and the air inlet and outlet pump 239 perform exhaust treatment on the feeding extruder 234 and the double-connection treatment sleeve 229. Through exhaust, the air residue in the feeding extruder 234 and the double-connection treatment sleeve 229 is reduced, avoiding the influence of air on the extruded plastic and improving the compactness of the feeding. The double-connection treatment sleeve 229 is opened through the limiting valve 230, and the extruded plastic enters the storage double-chamber frame 221 along the double-connection treatment sleeve 229. The storage double-chamber frame 221 is heat-insulated by the heat-insulating electric heater 228; When the filling of the plastic extrusion in one chamber of the storage double-chamber frame 221 is completed, the compaction hydraulic cylinder 215 drives the compaction annular plate 216 to move along the forming inlet and outlet chamber 204 towards the direction close to the storage double-chamber frame 221. At this time, the feed connecting pipe 217 moves towards the position of the connecting seal pipe 244. The connecting electromagnetic column 224 and the double-hole combined plate 227 are magnetically combined. The compaction annular plate 216 drives the connecting electromagnetic column 224 and the double-hole combined plate 227 to push the linkage rack 226 to move along the storage double-chamber frame 221. The linkage rack 226 is meshed and connected with the linkage gear 225, so as to drive the linkage gear 225 to rotate along the storage double-chamber frame 221. At this time, the linkage gear 225 pushes another linkage rack 226, and the linkage rack 226 drives the processing moving frame 222 to push the inlet and outlet pushing plate 223 to move along the storage double-chamber frame 221. The inlet and outlet pushing plate 223 is used to push the plastic extrusion to move along the connecting seal pipe 244 and the feed connecting pipe 217. The isolation electric push rod 219 drives the isolation sliding frame 220 to enter the inner side of the forming inlet and outlet chamber 204 along the isolation operating sleeve 218 and the feed connecting pipe 217, and the feed connecting pipe 217 is opened, and the plastic extrusion enters the inner side of the forming inlet and outlet chamber 204 to realize the feed processing; During feeding, the plastic extrusion is injected into the other chamber of the storage double-chamber frame 221 to realize the simultaneous feeding processing of two components. During the feeding process, the sealing electric push rod 241 drives the arc-shaped sealing block 242 to enter the inner sides of the storage double-chamber frame 221 and the forming outer mold 203. The vacuum tube frame 238 and the inlet and outlet air pump 239 perform exhaust processing on the inside of the storage double-chamber frame 221 and the forming outer mold 203 to reduce the internal air content, thereby reducing the bubbles in the plastic extrusion. After the feeding is completed, the isolation electric push rod 219 drives the isolation sliding frame 220 to reset to realize the sealing of the feed connecting pipe 217; When the injection of the plastic extrusion is completed, the compaction hydraulic cylinder 215 drives the compaction annular plate 216 to move along the forming inlet and outlet chamber 204 towards the conduction outer exchange column 207. The compaction annular plate 216 performs extrusion processing on the plastic extrusion and moves along the forming inlet and outlet chamber 204 and the arc-shaped inner module 205 towards the position of the conduction outer exchange column 207. While extruding the plastic, exhaust processing is carried out in cooperation with the vacuum tube frame 238, and the air inside the plastic extrusion is extruded and discharged externally and extracted and discharged externally to realize the internal exhaust processing. After the feeding is completed, the sealing electric push rod 241 drives the arc-shaped sealing block 242 to reset to realize the internal isolation processing. Through arc-shaped extrusion, the plastic extrusion is evenly separated and pushed to move step by step to avoid the situation that the plastic extrusion cools and solidifies due to staying at one position for a long time. At the same time, through deformation processing, it can be effectively extruded at the front end of the forming, reducing the internal bubble content. At the same time, by using extrusion feeding, the feeding speed is increased, and it is comprehensively heated in cooperation with the heat preservation electric heater 228 to avoid the plastic extrusion from cooling and solidifying at the front end. At the same time, the plastic extrusion at multiple positions is integrated and evenly distributed to avoid the situation that unilateral discharging affects the overall production efficiency; When extruding the plastic extrusion, the compaction annular plate 216 drives the connecting electromagnetic column 224, the double-hole combination plate 227 and the linkage rack 226 to move back to their original positions. At this time, in cooperation with the linkage gear 225 and another linkage rack 226, the processing moving frame 222 and the inlet and outlet pushing plate 223 are driven to return to their original positions, realizing the filling process of the plastic extrusion inside the chamber. After the extrusion is completed, the above operations are repeated. By connecting and separating the connecting electromagnetic column 224 and the double-hole combination plate 227, the feeding position is changed, realizing continuous and stable feeding processing; After the plastic extrusion passes through the arc positions of the forming inlet and outlet cavity 204 and the arc inner mold 205, it enters the forming position. The coolant in the cooling circulation tank 201 is extracted by the annular impact pipe rack 214 and the extraction pump 243. The coolant sprays along the annular impact pipe rack 214 to the inside of the interception limit box 211. The coolant in the interception limit box 211 is extracted by the extraction pump 243 and the injection treatment pipe 213, and the coolant is injected into the water injection heat exchange cavity 208 at the position of the conduction outer heat exchange column 207. The coolant in the cooling circulation tank 201 is extracted by the cooling injection pipe rack 231 and the extraction pump 243. The coolant sprays along the cooling injection pipe rack 231 to the position of the interception recovery sleeve 232. The coolant at the position of the interception recovery sleeve 232 is extracted by the operation water inlet pipe 233 and the extraction pump 243, and the coolant is injected into the inside of the forming inlet and outlet cavity 204 in the conduction inner heat exchange column 206. The coolant gradually fills the water injection heat exchange cavity 208. At this time, the overflow coolant after being filled is discharged into the inside of the next water injection heat exchange cavity 208 by using the special-shaped inlet and outlet pipe 209, realizing the gradual filling process of the coolant; Repeat the above operations to gradually fill the water injection heat exchange cavities 208 at the positions of the forming outer mold 203, the arc inner mold 205, the conduction inner heat exchange column 206 and the conduction outer heat exchange column 207. The coolant enters the inside of the heat flow collection box 212 along the outer discharge fixed pipe 210, thus realizing the absorption of heat by the coolant for cooling the pipeline at the forming position of the mold. In cooperation with the conduction inner heat exchange column 206 and the conduction outer heat exchange column 207, the pipeline is supported and guided, and the pipeline is heat-exchanged and cooled. Through the internal and external cooling treatment at the same time, the forming speed is improved. The low-temperature coolant far from the forming position absorbs heat and gradually warms up, and is gradually injected to the position close to the forming position. By gradually warming up the coolant and carrying out the internal circulation treatment of the coolant, the slow cooling of the pipeline is realized, avoiding large internal stress in the pipeline caused by too fast cooling speed, affecting the quality of the product. At the same time, the heat is recycled by using the circulating cooling, reducing the waste of resources; At this time, the cooling injection pipe rack 231 located at the discharge position directly sprays and cools the inside of the pipe. When it sprays, the air inlet and outlet pump 239 and the elastic airbag 240 elastically expand and limit the pipe and the interception and recovery sleeve 232, reducing the occurrence of coolant splashing and overflowing. The annular impact pipe rack 214 directly sprays and cools the outside of the pipe, realizing sufficient cooling treatment during discharging, so that the pipe solidifies during discharging, ensuring the forming quality and avoiding deformation due to insufficient forming. The coolant after heat exchange flows into the inner side of the heat flow collection box 212 along the outer discharge fixed pipe 210. The extraction pump 243 and the extraction injection pipe 236 extract the hot coolant at the position of the heat flow collection box 212 and inject it into the inner side of the interception and recovery sleeve 232. The plastic masterbatch at the position of the feeding extrusion machine 234 absorbs heat to preheat the plastic masterbatch, and the coolant after heat exchange and cooling flows into the inner side of the cooling circulation box 201 through the reflux operation pipe 237, realizing the recycling of the coolant and reducing resource waste. After the pipe is formed, it moves to the position of the electric traction wheel 302 of the traction moving rack 301, and the electric traction wheel 302 drives the pipe to move out. When the pipe is traction-moved to the cutting length, the transposition electric slide rail 303 drives the lifting special-shaped plate 304 to rise along the traction moving rack 301, making the side end of the negative pressure adsorption sleeve 306 fit with the side end of the pipe. The adsorption treatment pipe 307 and the adsorption treatment pump 305 cooperate to extract the air at the connection, realizing negative pressure adsorption and fixation. The alignment electric slide rail 317 drives the bearing hydraulic cylinder 318 to move along the traction moving rack 301, and the bearing hydraulic cylinder 318 drives the integrated lifting frame 319 to move to the side end of the pipe. The pressing hydraulic cylinder 320 drives the electric heating pressing frame 321 to fit into the inner side of the pipe, and performs electrothermal extrusion injection molding on the inner side of the pipe to change the inner diameter of both ends of the pipe, so as to adjust the shape of the pipe as needed. The pipe is limited by the positioning combination sleeve 309. The downward moving electric push rod 312 drives the combined connection sleeve 313 to move downward, and the cutting motor 314 drives the cutting knife 315 to rotate. The cutting knife 315 cuts the pipe. The annular electric slide rail 310 drives the operation moving rack 311 to move along the cutting treatment sleeve 308, realizing the cutting of the pipe. The debris generated during cutting is thrown to the side end of the cutting treatment sleeve 308, and the operation moving rack 311 drives the slag cleaning scraper 316 to rotate along the cutting treatment sleeve 308, so as to clean the debris on its surface, realizing slag cleaning treatment, and thus completing the splitting treatment of the pipe.

[0027] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A manufacturing method of a plastic PVC pipe, characterized in that, It includes the following steps: S1. Raw material preparation: Select the required plastic masterbatch according to the needs of pipe production, put the plastic masterbatch into the inner side of the feeding extruder (234), heat the plastic masterbatch through heat exchange of the heat exchange barrel (235) to achieve raw material treatment; S2. Feeding and exhausting: Extrude towards the position of the double-connection treatment sleeve (229) through the load-bearing limit frame (1) and the feeding extruder (234), and perform internal exhaust treatment by the vacuum tube frame (238) and the air inlet and outlet pump (239) to achieve feeding and exhausting; S3. Pressing and cooling: Drive the pressing annular plate (216) by the pressing hydraulic cylinder (215) to push and press the extruded plastic, and inject cooling liquid towards the positions of the arc-shaped inner mold (205) and the conduction inner heat exchange column (206) through the special-shaped inlet and outlet pipe (209), the cooling injection pipe frame (231), the interception and recovery sleeve (232), the operation water inlet pipe (233) and the extraction pump (243) to achieve pipe pressing and forming and cooling treatment; S4. Traction and cutting: Drive the pipe to be discharged outside through the traction moving frame (301) and the electric traction wheel (302), position and support the pipe by the negative pressure adsorption sleeve (306), and drive the electric heating pressing frame (321) by the pressing hydraulic cylinder (320) to press and form both ends of the pipe to achieve pipe shaping treatment.

2. The manufacturing method of a plastic PVC pipe according to claim 1, characterized in that, The load-bearing limit frame (1) is provided with a splitting and connecting component (2); The splitting and connecting component (2) includes a cooling circulation tank (201); One side of the top of the load-bearing limit frame (1) is installed with a cooling circulation tank (201), the top of the cooling circulation tank (201) is clamped with an integrated support frame (202), one side of the top of the integrated support frame (202) is installed with a forming outer mold (203), and a forming inlet and outlet cavity (204) is arranged inside the forming outer mold (203); One end of the forming outer mold (203) is provided with an arc-shaped inner mold (205) corresponding to the position of the forming inlet and outlet cavity (204), one end of the arc-shaped inner mold (205) is clamped with a conduction inner heat exchange column (206), and a conduction outer heat exchange column (207) is installed at the top of the integrated support frame (202) corresponding to the position of the forming outer mold (203); A number of pressing hydraulic cylinders (215) are equidistantly clamped at one end of the forming outer mold (203), one end of the multiple pressing hydraulic cylinders (215) is clamped with a pressing annular plate (216), a number of feeding connecting pipes (217) are equidistantly penetrated and connected at one end of the pressing annular plate (216), an isolation operation sleeve (218) is clamped inside the feeding connecting pipe (217), an isolation electric push rod (219) is embedded and installed inside the isolation operation sleeve (218), one end of the isolation electric push rod (219) is clamped with an isolation sliding frame (220), one end of the integrated support frame (202) is clamped with a storage double-chamber frame (221), the storage double-chamber frame (221) is symmetrically slidably connected with a processing moving frame (222) at one end, and a feeding and discharging push plate (223) is welded at one end of the processing moving frame (222) corresponding to the position of the storage double-chamber frame (221); One end of the compacting annular plate (216) is symmetrically clamped with a connecting electromagnetic column (224). The side ends of the storage double-chamber frame (221) are symmetrically rotatably connected with linkage gears (225). Linkage racks (226) are installed at the side end of the storage double-chamber frame (221) and one end of the processing moving frame (222). One end of one of the linkage racks (226) is welded with a double-hole combined plate (227). The connecting seal pipes (244) are equidistantly and symmetrically penetrated and connected at one end of the storage double-chamber frame (221).

3. The manufacturing method of a plastic PVC pipe according to claim 2, characterized in that, The cross-sections of the side ends of the forming inlet and outlet cavity (204) and the arc-shaped inner mold (205) are elliptical. The side end of the compacting annular plate (216) is slidably attached to the side end of the forming inlet and outlet cavity (204). The isolation sliding frame (220) is slidably combined with the feeding connecting pipe (217).

4. The manufacturing method of a plastic PVC pipe according to claim 2, characterized in that, A number of water injection heat exchange cavities (208) are equidistantly arranged inside the forming outer mold (203), the arc-shaped inner mold (205), the conduction inner exchange column (206) and the conduction outer exchange column (207). A number of special-shaped inlet and outlet pipes (209) are equidistantly clamped inside the water injection heat exchange cavities (208). One end of two of the special-shaped inlet and outlet pipes (209) is connected with an outer discharge fixed pipe (210) through a connector; One side of the top end of the cooling circulation tank (201) is clamped with an interception and limit box (211). One end of the cooling circulation tank (201) is clamped with a heat flow collection box (212). An injection treatment pipe (213) is penetrated and connected at one end of the interception and limit box (211) corresponding to the position of the water injection heat exchange cavity (208). A ring-shaped impact pipe rack (214) is embedded and installed on the side end of the interception and limit box (211); Heat preservation electric heaters (228) are installed inside the forming outer mold (203) and the storage double-chamber frame (221). Double-connection treatment sleeves (229) are symmetrically penetrated at the bottom end of the storage double-chamber frame (221). Restriction valves (230) are symmetrically embedded and installed on the side ends of the double-connection treatment sleeves (229); Cooling injection pipe racks (231) are penetrated and connected at the side ends of the arc-shaped inner mold (205) and the conduction inner exchange column (206). An interception and recovery sleeve (232) is sleeved on the side end of the cooling injection pipe rack (231). An operation inlet water pipe (233) is penetrated and connected at one end of the interception and recovery sleeve (232) corresponding to the position of the water injection heat exchange cavity (208); One end of the double-connection treatment sleeve (229) is installed with a feeding extrusion machine (234). A heat replacement barrel (235) is sleeved on the top of the side end of the feeding extrusion machine (234). A extraction and injection pipe (236) is penetrated and connected at one side of the bottom end of the heat replacement barrel (235). A reflux operation pipe (237) is penetrated and connected at the top of the side end of the heat replacement barrel (235); A vacuum tube rack (238) is connected through both the formed outer mold (203) and the storage double cavity frame (221), and between the double-connection processing sleeve (229) and the feeding extruder (234). At the positions corresponding to the vacuum tube rack (238) at one end of the integrated support frame (202) and one end of the heat flow collection box (212), and at one end of the interception recovery sleeve (232), an air inlet and outlet pump (239) is installed through a motor base. Elastic air bags (240) are clamped at both sides corresponding to the air inlet and outlet pump (239) at one end of the interception recovery sleeve (232). A number of sealed electric push rods (241) are clamped at equal intervals inside the vacuum tube rack (238). An arc-shaped sealing block (242) is installed at one end of the sealed electric push rod (241). At one end of the cooling circulation box (201), the interception limit box (211), the heat flow collection box (212), and the interception recovery sleeve (232), an extraction pump (243) is installed through a motor base.

5. The manufacturing method of a plastic PVC pipe according to claim 4, characterized in that, One end of the outer discharge fixed pipe (210) is installed through one end of the heat flow collection box (212). One end of the annular impact pipe rack (214) is installed through one end of the cooling circulation box (201). One of the outer discharge fixed pipes (210) is connected through the cooling injection pipe rack (231).

6. The manufacturing method of a plastic PVC pipe according to claim 4, characterized in that, One of the linkage racks (226) is welded and combined with the processing moving frame (222). The feeding connecting pipe (217) is slidably connected with the connecting sealing pipe (244). One end of the injection processing pipe (213), the annular impact pipe rack (214), the cooling injection pipe rack (231), the operation water inlet pipe (233), and the extraction injection pipe (236) are all connected to one end of the extraction pump (243) through a swivel joint.

7. The manufacturing method of a plastic PVC pipe according to claim 4, characterized in that, One end of the reflux operation pipe (237) is installed through one end of the cooling circulation box (201). The air inlet and outlet pump (239) is connected to the vacuum tube rack (238) through a swivel joint. The input ends of the compaction hydraulic cylinder (215), the isolation electric push rod (219), the connecting electromagnetic column (224), the heat preservation electric heater (228), the limiting valve (230), the feeding extruder (234), the air inlet and outlet pump (239), the sealed electric push rod (241), and the extraction pump (243) are all electrically connected to the output end of the external controller. The input end of the external controller is electrically connected to the output end of the external power supply.

8. The manufacturing method of a plastic PVC pipe according to claim 7, characterized in that, The load-bearing limit frame (1) is provided with a separate two-way component (3). The separate two-way component (3) includes a traction moving frame (301). A traction moving frame (301) is installed at one end of the load-bearing limit frame (1), a plurality of electric traction wheels (302) are equidistantly installed at the top of the traction moving frame (301), a plurality of transposition electric slide rails (303) are equidistantly and symmetrically embedded at the side end of the traction moving frame (301), one end of the plurality of transposition electric slide rails (303) is connected to a lifting special-shaped plate (304) through a slide rail seat, an adsorption treatment pump (305) is installed at one end of the lifting special-shaped plate (304) through a motor seat, a negative pressure adsorption sleeve (306) is installed at the top of the lifting special-shaped plate (304), and one side of the bottom end of the negative pressure adsorption sleeve (306) is connected to an adsorption treatment pipe (307) through an adapter; A cutting processing sleeve (308) is clamped on the inner side of the traction movable frame (301), a positioning assembly sleeve (309) is welded to one end of the inner side of the cutting processing sleeve (308), an annular electric slide rail (310) is embedded and installed on the inner side of the cutting processing sleeve (308), one end of the annular electric slide rail (310) is connected to an operating movable frame (311) via a slide rail seat, and a plurality of downward moving electric push rods (312) are equidistantly installed at the bottom end of the operating movable frame (311); A plurality of downward-moving electric push rods (312) are clamped at their bottom ends with a combined connecting sleeve (313), a cutting motor (314) is mounted on one end of the combined connecting sleeve (313) via a motor seat, a cutting knife (315) is clamped on one end of an output shaft of the cutting motor (314), and a slag-cleaning scraper (316) is welded on one end of the operating movable frame (311); Both ends of the traction movable frame (301) are installed with aligning electric slide rails (317); one end of the aligning electric slide rail (317) is installed with a bearing hydraulic cylinder (318) via a slide rail seat; an integrated lifting frame (319) is installed at the top of the bearing hydraulic cylinder (318); a pressing hydraulic cylinder (320) is symmetrically clamped on the inner side of the integrated lifting frame (319); and one end of the two pressing hydraulic cylinders (320) is installed with an electric heating pressing frame (321).

9. The manufacturing method of a plastic PVC pipe according to claim 8, characterized in that, One end of the adsorption treatment pipe (307) is connected to one end of the adsorption treatment pump (305) via an adapter, and the side ends of the operating movable frame (311) and the slag cleaning scraper (316) are fitted to the side ends of the cutting treatment sleeve (308); The input ends of the electric traction wheel (302), the transposition electric slide rail (303), the annular electric slide rail (310), the downward electric push rod (312), the cutting motor (314), the alignment electric slide rail (317), the bearing hydraulic cylinder (318), the pressing hydraulic cylinder (320) and the electric heating pressing frame (321) are all electrically connected to the output end of the external controller.

10. A plastic PVC pipe manufactured according to the method for manufacturing a plastic PVC pipe according to claim 9.

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