A method for manufacturing a plastic PVC pipe and the pipe

Abstract

The present invention discloses a method for manufacturing a plastic PVC pipe and the pipe thereof, relating to the technical field of pipe extrusion injection molding, comprising the following steps: S1, raw material preparation: selecting required plastic masterbatch according to the requirements of pipe production, putting the plastic masterbatch into the inner side of a feed extruder, and heating the plastic masterbatch through heat exchange in a heat exchange barrel to achieve raw material processing; S2, feed and exhaust: extruding to the position of a double-connected processing sleeve through a load-bearing limit frame and a feed extruder, and performing internal exhaust treatment by a vacuum pipe rack and an inlet and outlet air pump to achieve feed and exhaust. The present invention effectively solves the problem in the prior art that multiple positions are fed and the incoming raw materials are not integrated, and a large number of bubbles exist 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 forming position, resulting in deformation of the pipe under the influence of gravity.

Description

Technical Field

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

[0002] Plastic PVC pipe is a kind of plastic pipe widely used in construction, municipal administration, agriculture and other fields. It has the characteristics of lightness, corrosion resistance and low cost. Its main advantages include corrosion resistance, lightness and easy installation, low cost, long life and low fluid resistance. The main application areas are building water supply and drainage, agricultural irrigation, electrical conduit, industrial pipelines, municipal engineering, communication pipelines, etc.

[0003] In the application number 202411391088.4, an extrusion molding equipment for the production and processing of corrugated pipes is disclosed. This patent directly forms the socket and the spigot at both ends of the steel strip pipe by injecting molten plastic raw materials. No additional cutting process is required for the steel strip pipe, thereby improving the production and molding efficiency of the steel strip corrugated pipe, and eliminating the waste of materials that are turned again after molding during the manufacturing process.

[0004] However, in the existing technology, when producing pipes, materials are fed from multiple positions and the incoming raw materials are not integrated, resulting in gaps between the raw materials, in which a large amount of air is easily accumulated, causing pits on the surface of the pipe, affecting the quality of the pipe. In addition, during continuous production, the pipe is not cooled at the forming position, resulting in the pipe remaining in a softened state after leaving the mold position, causing the pipe to collapse downward under the influence of gravity, causing the pipe to deform, affecting product quality. Summary of the Invention

[0005] The present invention provides a method for manufacturing a plastic PVC pipe and the pipe thereof, which can effectively solve the problem proposed in the above background technology that, when producing pipes, the existing technology feeds materials at multiple positions and does not integrate the incoming raw materials, resulting in gaps between the raw materials, in which a large amount of air is easily accumulated, resulting in pits on the surface of the pipe, affecting the quality of the pipe, and during continuous production, the pipe is not cooled at the forming position, resulting in the pipe remaining in a softened state after leaving the mold position, causing the pipe to collapse downward under the influence of gravity, causing the pipe to deform, and affecting product quality.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for manufacturing a plastic PVC pipe, comprising the following steps:

[0007] S1. Raw material preparation: Select the required plastic masterbatch according to the needs of pipeline production, put the plastic masterbatch into the inner side of the feed extruder, and heat the plastic masterbatch through heat exchange barrel to realize raw material processing;

[0008] S2. Feeding and exhausting: Extruding to the double-connected processing sleeve position through the load-bearing limit frame and the feeding extruder, and exhausting the internal air by the vacuum pipe rack and the inlet and outlet air pump to achieve feeding and exhausting;

[0009] S3. Pressing and cooling: The compacting hydraulic cylinder drives the compacting annular plate to push and compact the extruded plastic. Coolant is injected into the arc-shaped inner mold and the conductive inner column exchange position through the special-shaped inlet and outlet pipes, the cooling injection pipe rack, the interception recovery sleeve, the operating water inlet pipe and the extraction pump to achieve pipe compaction molding and cooling treatment;

[0010] S4. Traction cutting: The pipeline is discharged outwards by traction of the mobile frame and the electric traction wheel, the pipeline is positioned and supported by the negative pressure adsorption sleeve, and the pressing hydraulic cylinder drives the electric heating pressing frame to press and shape the two ends of the pipeline to achieve pipeline shaping.

[0011] According to the above technical solution, the load-bearing limit frame is provided with a separation and extrusion communication component;

[0012] The extrusion communication component includes a cooling circulation box;

[0013] A cooling circulation box is installed on one side of the top of the load-bearing limit frame, an integrated support frame is clamped on the top of the cooling circulation box, a forming outer mold is installed on one side of the top of the integrated support frame, and a forming inlet and outlet cavity is opened inside the forming outer mold;

[0014] An arc-shaped inner mold is installed at one end of the molding outer mold corresponding to the molding inlet and outlet cavity position, a conductive inner exchange column is clamped at one end of the arc-shaped inner mold, and a conductive outer exchange column is installed at the top end of the integrated support frame corresponding to the molding outer mold position;

[0015] One end of the forming outer mold is equidistantly connected to a plurality of compacting hydraulic cylinders, one end of the plurality of compacting hydraulic cylinders is connected to a compacting annular plate, one end of the compacting annular plate is equidistantly penetrated and connected to a plurality of feed connecting pipes, the inner side of the feed connecting pipe is connected to an isolation operating sleeve, the inner side of the isolation operating sleeve is embedded with an isolation electric push rod, one end of the isolation electric push rod is connected to an isolation sliding frame, one end of the integrated support frame is connected to a storage double-cavity frame, one end of the storage double-cavity frame is symmetrically slidably connected to a processing mobile frame, and an in-and-out pushing plate is welded at one end of the processing mobile frame at the position corresponding to the storage double-cavity frame;

[0016] One end of the compacting annular plate is symmetrically clamped with a connecting electromagnetic column, and the side end of the storage double-cavity frame is symmetrically connected to a linkage gear. The side end of the storage double-cavity frame and one end of the processing mobile frame are both installed with linkage racks, and one end of one of the linkage racks is welded with a double-hole combination plate, and one end of the storage double-cavity frame is equidistantly and symmetrically penetrated with a connecting sealing tube.

[0017] According to the above technical solution, the cross-sections of the forming inlet and outlet cavity and the side end of the arc-shaped inner mold are elliptical, the side end of the compacted annular plate slides and fits with the side end of the forming inlet and outlet cavity, and the isolation slide frame is slidably combined with the feed connecting pipe.

[0018] According to the above technical solution, a number of water injection heat exchange chambers are equidistantly opened on the inner sides of the forming outer mold, the arc-shaped inner mold, the conductive inner exchange column and the conductive outer exchange column. A number of special-shaped inlet and outlet pipes are equidistantly connected to the inner sides of the water injection heat exchange chambers, and one end of two of the special-shaped inlet and outlet pipes is connected to an outer row of fixed pipes through an adapter.

[0019] An interception limit box is clamped on one side of the top of the cooling circulation box, a heat flow collection box is clamped on one end of the cooling circulation box, an injection treatment pipe is connected through one end of the interception limit box corresponding to the water injection heat exchange cavity position, and an annular impact pipe rack is embedded in the side end of the interception limit box;

[0020] The outer molding die and the inner side of the storage double-cavity frame are both installed with heat preservation electric heaters, the bottom end of the storage double-cavity frame is symmetrically penetrated by a double-connection processing sleeve, and the side end of the double-connection processing sleeve is symmetrically embedded with a limiting valve;

[0021] The arc-shaped inner mold and the side end of the conductive inner exchange column are connected through the cooling injection pipe rack, the side end of the cooling injection pipe rack is sleeved with an interception recovery sleeve, and one end of the interception recovery sleeve is connected through the operating water inlet pipe at the position corresponding to the water injection heat exchange cavity;

[0022] A feed extruder is installed at one end of the double-connected processing sleeve, a heat exchange barrel is sleeved on the top of the side end of the feed extruder, an extraction and injection pipe is connected through one side of the bottom end of the heat exchange barrel, and a reflux operation pipe is connected through the top of the side end of the heat exchange barrel;

[0023] A vacuum tube rack is connected between the molding outer mold and the storage double-cavity frame, and between the double-connected processing sleeve and the feed extruder. One end of the integrated support frame and one end of the heat flow collection box correspond to the vacuum tube rack position, and one end of the interception and recovery sleeve is installed with an inlet and outlet air pump through a motor seat. Elastic air bags are clamped at both sides of one end of the interception and recovery sleeve corresponding to the inlet and outlet air pump positions.

[0024] Several sealed electric push rods are equidistantly connected to the inner side of the vacuum tube rack, one end of which is equipped with an arc-shaped sealing block, and one end of the cooling circulation box, interception limit box, heat flow collection box and interception recovery sleeve is equipped with an extraction pump through a motor base.

[0025] According to the above technical solution, one end of the outer row fixed pipe is installed through one end of the heat flow collection box, and one end of the annular impact pipe rack is installed through one end of the cooling circulation box, and one of the outer row fixed pipes is connected through the cooling injection pipe rack.

[0026] According to the above technical solution, one of the linkage racks is welded to the processing movable rack, the feed connecting pipe is slidingly connected to the connecting sealing pipe, and the injection processing pipe, annular impact pipe rack, cooling injection pipe rack, operating water inlet pipe and one end of the extraction injection pipe are all connected to one end of the extraction pump through an adapter.

[0027] According to the above technical solution, one end of the reflux operation pipe is installed through one end of the cooling circulation box, and the inlet and outlet air pumps are connected to the vacuum pipe rack through an adapter;

[0028] The input ends of the compacting hydraulic cylinder, the isolation electric push rod, the connecting electromagnetic column, the heat-insulating electric heater, the limiting valve, the feed extruder, the inlet and outlet air pumps, the sealing electric push rod and the extraction pump are all electrically connected to the output end of the external controller;

[0029] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0030] According to the above technical solution, the load-bearing limit frame is provided with two-way components;

[0031] The bidirectional sub-location assembly includes a traction mobile frame;

[0032] A traction moving frame is installed at one end of the load-bearing limit frame, and a plurality of electric traction wheels are equidistantly installed on the top of the traction moving frame. A plurality of transposition electric slide rails are equidistantly and symmetrically embedded and installed on the side ends of the traction moving frame. One end of the plurality of transposition electric slide rails is connected to a lifting special-shaped plate through a slide rail seat, and an adsorption treatment pump is installed at one end of the lifting special-shaped plate through a motor seat. A negative pressure adsorption sleeve is installed on the top of the lifting special-shaped plate, and one side of the bottom end of the negative pressure adsorption sleeve is connected to an adsorption treatment pipe through an adapter;

[0033] A cutting processing sleeve is clamped on the inner side of the traction movable frame, a positioning assembly sleeve is welded on one end of the inner side of the cutting processing sleeve, an annular electric slide rail is embedded in the inner side of the cutting processing sleeve, one end of the annular electric slide rail is connected to the operating movable frame through a slide rail seat, and a plurality of downward moving electric push rods are equidistantly installed at the bottom end of the operating movable frame;

[0034] The bottom ends of the plurality of downward electric push rods are clamped with a combined connecting sleeve, one end of the combined connecting sleeve is installed with a cutting motor through a motor seat, one end of the cutting motor output shaft is clamped with a cutting knife, and one end of the operating movable frame is welded with a slag scraper;

[0035] Both ends of the traction moving frame are equipped with alignment electric slide rails, one end of the alignment electric slide rail is equipped with a load-bearing hydraulic cylinder through a slide rail seat, an integrated lifting frame is installed on the top of the load-bearing hydraulic cylinder, and a pressing hydraulic cylinder is symmetrically clamped on the inner side of the integrated lifting frame, and one end of the two pressing hydraulic cylinders is equipped with an electric heating pressing frame.

[0036] According to the above technical solution, one end of the adsorption treatment pipe is connected to one end of the adsorption treatment pump through an adapter, and the side ends of the operating movable frame and the slag cleaning scraper are fitted with the side ends of the cutting treatment sleeve;

[0037] The input ends of the electric traction wheel, the transposition electric slide rail, the annular electric slide rail, the downward electric push rod, the cutting motor, the alignment electric slide rail, the bearing hydraulic cylinder, the pressing hydraulic cylinder and the electric heating pressing frame are all electrically connected to the output end of the external controller.

[0038] A plastic PVC pipe is manufactured according to the above technical solution and a method for manufacturing a plastic PVC pipe.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. It is equipped with an extrusion connection component. The compaction hydraulic cylinder drives the compaction ring plate, the feed connection pipe and the connection electromagnetic column to move. The connection electromagnetic column is linked with the double-hole combination plate by magnetic attraction. The double-hole combination plate drives the linkage rack to move. The linkage rack drives the linkage gear to rotate, thereby driving the linkage rack, the processing moving frame and the in-and-out pusher plate to move. The compaction ring plate and the in-and-out pusher plate move in opposite directions to achieve synchronous processing of feeding and discharging. The extruded plastic is injected into the molding inlet and outlet cavity through the feed connection pipe and the matching connection sealing pipe. The reciprocating feeding process is used and the feeding position is switched to achieve Continuous feeding: the extruded plastic is injected into the storage double-cavity rack by the feeding extruder and the double-connection processing sleeve. The vacuum pipe rack and the inlet and outlet air pumps exhaust the internal air of the molding outer mold, the storage double-cavity rack, the feeding extruder and the double-connection processing sleeve. The compacting ring plate compacts the extruded plastic, so that during the pipeline extrusion molding, the air between the extruded plastic can be effectively discharged to avoid obvious bubbles in the extruded plastic. In addition, the arc feeding and three-stage linkage uninterrupted feeding processing, combined with the hydraulic extrusion feeding, improve the feeding speed, thereby effectively ensuring the production efficiency and product quality.

[0041] The inside and outside of the pipeline are spray-cooled simultaneously by the annular impact pipe rack and the cooling injection pipe rack. The cooling liquid is injected into the inner side of the water injection heat exchange cavity in the forming outer mold, the arc-shaped inner mold, the conductive inner exchange column and the conductive outer exchange column in conjunction with the extraction pump, the injection processing pipe, the operating water inlet pipe and the special-shaped inlet and outlet pipe. The continuous heat exchange cooling is achieved through the cooperation of multiple groups of serial liquid inlets. The cooling liquid gradually flows from low temperature to high temperature to the pipeline forming position, and the temperature difference during the cooling and forming of the pipeline is reduced, thereby reducing the occurrence of excessive stress in the pipeline due to too rapid cooling. The forming outer mold, the arc-shaped inner mold, the conductive inner exchange column and the conductive outer exchange column are used to support and guide the pipeline while performing contact heat exchange, so that the pipeline has sufficient shaping time to avoid collapse after extrusion molding due to incomplete shaping, thereby improving the shaping quality of the pipeline shape.

[0042] Through the coordination of three-stage feeding, the extruder is used for continuous extrusion feeding and the dual-chamber storage switching feeding is used to ensure that the feeding amount each time is equal and sufficient, and in combination with negative pressure exhaust and extrusion exhaust, the pipeline is cooled continuously and at different temperatures through continuous and serial cooling coordination. At the same time, two sets of support guides are used to restrict its shaping, which effectively solves the problem of multi-position feeding in the existing technology and the lack of integrated processing of the incoming raw materials. There are a large number of bubbles in the raw materials, which leads to pits on the surface of the pipeline. At the same time, it solves the problem of not cooling the pipeline at the forming position, which leads to deformation of the pipeline due to the influence of gravity. Therefore, during pipeline production, the number of pipelines with bubbles and holes on the surface can be effectively reduced, while ensuring the overall production efficiency and improving the quality of the product.

[0043] 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 simultaneous processing of slag cleaning and cutting can reduce the impact of debris on the pipeline and improve the flatness and verticality of the pipeline end face.

[0044] 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.

[0045] In summary, by coordinating the extrusion connecting components and the bidirectional components, continuous production is utilized, and the pipelines are separated and cut in conjunction with the waiting time of extrusion injection molding. The waiting time is used to extend the cooling time of the pipeline, thereby reducing quality problems of the pipeline due to bubbles or insufficient curing without affecting production efficiency, and effectively improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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.

[0047] In the attached figure:

[0048] Figure 1 It is a schematic flow chart of the method of the present invention;

[0049] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0050] Figure 3 It is a structural schematic diagram of the extrusion and communication component of the present invention;

[0051] Figure 4 It is a schematic diagram of the installation structure of the conductive outer exchange column of the present invention;

[0052] Figure 5 This is a schematic diagram of the installation structure of the special-shaped inlet and outlet pipes of the present invention;

[0053] Figure 6 Schematic diagram of the installation structure of the compacted annular plate of the present invention;

[0054] Figure 7 This is a schematic diagram of the installation structure of the heat exchange barrel of the present invention;

[0055] Figure 8 It is a structural diagram of a bidirectional component of the present invention;

[0056] Figure 9 It is a schematic diagram of the installation structure of the operating mobile rack of the present invention;

[0057] Figure 10 It is a schematic diagram of the installation structure of the electric heating pressing frame of the present invention;

[0058] Numbers in the figure: 1, load-bearing limit frame;

[0059] 2. Extrusion connection components; 201. Cooling circulation box; 202. Integrated support frame; 203. Molding outer mold; 204. Molding inlet and outlet cavity; 205. Arc inner mold; 206. Conductive inner exchange column; 207. Conductive outer exchange column; 208. Water injection heat exchange cavity; 209. Special-shaped inlet and outlet pipes; 210. External fixed pipe; 211. Intercepting limit box; 212. Heat flow collection box; 213. Injection treatment pipe; 214. Annular impact pipe rack; 215. Compacting hydraulic cylinder; 216. Compacting annular plate; 217. Feed connecting pipe; 218. Isolation operation sleeve; 219. Isolation electric push rod; 220. Isolation slide rack; 221. Storage double-cavity rack; 2 22. Processing mobile rack; 223. Inlet and outlet push plate; 224. Connecting electromagnetic column; 225. Linkage gear; 226. Linkage rack; 227. Double-hole combination plate; 228. Insulation electric heater; 229. Double-connection processing sleeve; 230. Limiting valve; 231. Cooling injection pipe rack; 232. Intercepting recovery sleeve; 233. Operating 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 sealing block; 243. Extraction pump; 244. Connecting sealing pipe;

[0060] 3. Two-way components; 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 tube; 308. Cutting treatment sleeve; 309. Positioning combination sleeve; 310. Annular electric slide rail; 311. Operating moving frame; 312. Lowering electric push rod; 313. Combined connecting sleeve; 314. Cutting motor; 315. Cutting knife; 316. Slag cleaning scraper; 317. Alignment electric slide rail; 318. Load-bearing hydraulic cylinder; 319. Integrated lifting frame; 320. Pressing hydraulic cylinder; 321. Electric heating pressing frame. DETAILED DESCRIPTION

[0061] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0062] Example: Figure 1-10 As shown, the present invention provides a technical solution, a method for manufacturing a plastic PVC pipe, comprising the following steps:

[0063] S1. Raw material preparation: Select the required plastic masterbatch according to the requirements of pipeline production, put the plastic masterbatch into the inner side of the feed extruder 234, exchange heat through the heat exchange barrel 235, extract the injection pipe 236 and the reflux operation pipe 237 to drive the hot coolant circulation, heat the plastic masterbatch, and realize raw material processing;

[0064] S2. Feeding and exhausting: The material is extruded toward the position of the double-connected processing sleeve 229 through the load-bearing limit frame 1 and the feeding extruder 234. The extruded material flows along the double-connected processing sleeve 229 into the inner side of the storage double-cavity frame 221. The linkage gear 225 and the linkage rack 226 cooperate to drive the processing movable frame 222 and the in-and-out pushing plate 223 to push the extruded material along the feeding connecting pipe 217 and the connecting sealing pipe 244 into the inner side of the molding in-and-out cavity 204. The vacuum pipe frame 238 and the in-and-out air pump 239 perform internal exhaust treatment to realize feeding and exhausting.

[0065] S3. Pressing and cooling: The compacting hydraulic cylinder 215 drives the compacting annular plate 216 to push and compact the extruded plastic. Cooling liquid is injected into the water injection heat exchange chamber 208 at the position of the forming outer mold 203 and the conducting outer exchange column 207 through the special-shaped inlet and outlet pipes 209, the annular impact pipe rack 214, the interception limit box 211, the injection processing pipe 213 and the extraction pump 243. Cooling liquid is injected into the position of the curved inner mold 205 and the conducting inner exchange column 206 through the special-shaped inlet and outlet pipes 209, the cooling injection pipe rack 231, the interception recovery sleeve 232, the operating water inlet pipe 233 and the extraction pump 243, thereby achieving pipeline compaction molding and cooling treatment;

[0066] S4. Traction cutting: The pipeline is driven outward by the traction movable frame 301 and the electric traction wheel 302, the pipeline is positioned and supported by the negative pressure adsorption sleeve 306, the annular electric slide rail 310 drives the operating movable frame 311 to rotate and transpose, the cutting motor 314 drives the cutting knife 315 to cut the pipeline, the load-bearing hydraulic cylinder 318 drives the integrated lifting frame 319 to move up and down, and the pressing hydraulic cylinder 320 drives the electric heating pressing frame 321 to press and shape the two ends of the pipeline to achieve pipeline shaping.

[0067] The load-bearing limit frame 1 is provided with a separation and extrusion communication component 2;

[0068] The extrusion connection component 2 includes a cooling circulation box 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 conductive inner exchange column 206, a conductive outer exchange column 207, a water injection heat exchange cavity 208, a special-shaped inlet and outlet pipe 209, an external fixed pipe 210, an interception limit box 211, a heat flow collection box 212, an injection processing pipe 213, an annular impact pipe rack 214, a compacting hydraulic cylinder 215, a compacting annular plate 216, a feed connection pipe 217, an isolation operation sleeve 218, an isolation electric push rod 219, an isolation slide frame 220, a storage double-cavity frame 221, Processing movable frame 222, inlet and outlet pushing plate 223, connecting electromagnetic column 224, linkage gear 225, linkage rack 226, double-hole combination plate 227, heat-insulating electric heater 228, double-connection processing sleeve 229, limiting valve 230, cooling injection pipe rack 231, interception recovery sleeve 232, operating water inlet pipe 233, feeding extruder 234, heat exchange barrel 235, extraction injection pipe 236, reflux operation pipe 237, vacuum pipe rack 238, inlet and outlet air pump 239, elastic airbag 240, sealing electric push rod 241, arc-shaped sealing block 242, extraction pump 243 and connecting sealing pipe 244;

[0069] A cooling circulation box 201 is installed on one side of the top of the load-bearing limit frame 1, and an integrated support frame 202 is clamped on the top of the cooling circulation box 201. A forming outer mold 203 is installed on one side of the top of the integrated support frame 202. A forming inlet and outlet cavity 204 is opened inside the forming outer mold 203. An arc-shaped inner mold 205 is installed at the position of the forming inlet and outlet cavity 204 at one end of the forming outer mold 203. A conductive inner exchange column 206 is clamped on one end of the curved inner mold 205. A conductive outer exchange column 207 is installed at the position of the forming outer mold 203 at the top of the integrated support frame 202;

[0070] Several water-injection heat exchange chambers 208 are evenly spaced inside the forming outer mold 203, the arc-shaped inner mold 205, the conductive inner exchange column 206 and the conductive outer exchange column 207. Several special-shaped inlet and outlet pipes 209 are evenly spaced inside the water-injection heat exchange chamber 208. One end of two special-shaped inlet and outlet pipes 209 is connected to an outer row fixed pipe 210 through an adapter. One end of the outer row fixed pipe 210 is installed through one end of the heat flow collection box 212 to achieve steady discharge of coolant and realize coolant For heat reflux, an interception limit box 211 is clamped on one side of the top of the cooling circulation box 201, a heat flow collection box 212 is clamped on one end of the cooling circulation box 201, an injection treatment pipe 213 is connected through one end of the interception limit box 211 corresponding to the position of the water injection heat exchange chamber 208, and an annular impact pipe rack 214 is embedded in the side end of the interception limit box 211. One end of the annular impact pipe rack 214 is installed through one end of the cooling circulation box 201 to realize the reflux treatment of the coolant;

[0071] One end of the outer mold 203 is equidistantly connected to a plurality of compacting hydraulic cylinders 215, and one end of the plurality of compacting hydraulic cylinders 215 is connected to a compacting annular plate 216. The cross-sections of the molding inlet and outlet cavity 204 and the side ends of the arc-shaped inner mold 205 are elliptical. The side ends of the compacting annular plate 216 slide and fit with the side ends of the molding inlet and outlet cavity 204 to guide and extrude the extruded plastic. The elliptical guide can reduce the waiting time of the extruded plastic and ensure the temperature and stability of the feed. The compacting annular plate 216 is equidistantly connected to the outer mold 203, and the cross-sections of the molding inlet and outlet cavity 204 and the side ends of the arc-shaped inner mold 205 are elliptical. The side ends of the compacting annular plate 216 slide and fit with the side ends of the molding inlet and outlet cavity 204 to guide and extrude the extruded plastic. The elliptical guide can reduce the waiting time of the extruded plastic and ensure the temperature and stability of the feed. There are several feed connecting pipes 217 connected through the distance, and the inner side of the feed connecting pipe 217 is clamped with an isolation operation sleeve 218. The inner side of the isolation operation sleeve 218 is embedded with an isolation electric push rod 219. One end of the isolation electric push rod 219 is clamped with an isolation slide frame 220. The isolation slide frame 220 and the feed connecting pipe 217 are slidingly combined to achieve steady opening and closing processing, ensuring steady switching processing of feeding and discharging materials. One end of the integrated support frame 202 is clamped with a storage double-cavity frame 221, and one end of the storage double-cavity frame 221 is opposite to the storage double-cavity frame 221. The processing moving frame 222 is connected in a sliding manner. An in-and-out pushing plate 223 is welded at one end of the processing moving frame 222 corresponding to the position of the storage double-cavity frame 221. An electromagnetic column 224 is symmetrically connected to one end of the compacting annular plate 216. The side end of the storage double-cavity frame 221 is symmetrically connected to a linkage gear 225. The side end of the storage double-cavity frame 221 and one end of the processing moving frame 222 are both equipped with a linkage rack 226. One of the linkage racks 226 is welded to the processing moving frame 222 for easy linkage transmission. The double-hole combination plate 227 is welded to one end of the linkage rack 226, and a connecting sealing pipe 244 is symmetrically connected to one end of the storage double-cavity frame 221. The feed connecting pipe 217 is slidably connected to the connecting sealing pipe 244 to realize the feed through. The inner side of the forming outer mold 203 and the storage double-cavity frame 221 are both installed with a heat preservation electric heater 228. The bottom end of the storage double-cavity frame 221 is symmetrically penetrated by a double-connected processing sleeve 229, and the side end of the double-connected processing sleeve 229 is symmetrically embedded with a limiting valve 230.

[0072] The side ends of the arc inner mold 205 and the conductive inner exchange column 206 are connected through the cooling injection pipe rack 231, and one of the outer fixed pipes 210 is connected through the cooling injection pipe rack 231 to ensure the steady operation of drainage. The side end of the cooling injection pipe rack 231 is sleeved with an interception recovery sleeve 232, and one end of the interception recovery sleeve 232 is connected through the operation water inlet pipe 233 at the position corresponding to the water injection heat exchange chamber 208. The double-connected processing sleeve 229 is installed at one end with a feed extruder 234, and the top of the side end of the feed extruder 234 is sleeved with a heat exchanger. The heat exchange barrel 235 is connected to a heat exchange barrel 235 bottom end through an extraction and injection pipe 236. The injection treatment pipe 213, the annular impact pipe rack 214, the cooling injection pipe rack 231, the operating water inlet pipe 233, and one end of the extraction and injection pipe 236 are all connected to one end of the extraction pump 243 through an adapter to achieve water inlet and outlet treatment. The heat exchange barrel 235 side top is connected to a return operation pipe 237. One end of the return operation pipe 237 is installed through one end of the cooling circulation box 201 to achieve coolant recovery.

[0073] A vacuum tube rack 238 is connected between the molding outer mold 203 and the storage double-cavity rack 221, and between the double-connected processing sleeve 229 and the feed extruder 234. One end of the integrated support frame 202 and one end of the heat flow collection box 212 correspond to the position of the vacuum tube rack 238, and one end of the interception and recovery sleeve 232 are all installed with an inlet and outlet air pump 239 through a motor seat. The inlet and outlet air pump 239 is connected to the vacuum tube rack 238 through an adapter to achieve air pressure control exhaust to ensure the stability of the internal air pressure. Elastic air bags 240 are clamped at the positions of the inlet and outlet air pump 239 on both sides of one end of the interception and recovery sleeve 232. Several sealing electric push rods 241 are equidistantly clamped on the inner side of the vacuum tube rack 238. An arc-shaped sealing block 242 is installed on one end of the sealing electric push rod 241. An extraction pump 243 is installed on the cooling circulation box 201, the interception limit box 211, the heat flow collection box 212 and one end of the interception and recovery sleeve 232 through a motor seat.

[0074] For stable operation of the equipment, the input ends of the compacting hydraulic cylinder 215, the isolation electric push rod 219, the connecting electromagnetic column 224, the heat-insulating electric heater 228, the limiting valve 230, the feed extruder 234, the inlet and outlet air pumps 239, the sealing electric push rod 241 and the extraction pump 243 are all electrically connected to the output end of the external controller;

[0075] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0076] The load-bearing limit frame 1 is provided with a bidirectional component 3;

[0077] The bidirectional assembly 3 includes a traction moving frame 301, an electric traction wheel 302, a transposition electric slide 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 assembly sleeve 309, an annular electric slide 310, an operating moving frame 311, a downward electric push rod 312, a combination connecting sleeve 313, a cutting motor 314, a cutting knife 315, a slag scraper 316, an alignment electric slide 317, a load-bearing hydraulic cylinder 318, an integrated lifting frame 319, a pressing hydraulic cylinder 320, and an electric heating pressing frame 321.

[0078] A traction moving frame 301 is installed at one end of the load-bearing limit frame 1, and several electric traction wheels 302 are equidistantly installed on the top of the traction moving frame 301. Several transposition electric slide rails 303 are equidistantly and symmetrically embedded on the side ends of the traction moving frame 301. One end of the multiple transposition electric slide rails 303 is connected to a lifting special-shaped plate 304 through a slide rail seat, and 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 on 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. One end of the adsorption treatment pipe 307 is connected to one end of the adsorption treatment pump 305 through a adapter to achieve adsorption connection and fixation;

[0079] The inner side of the traction movable frame 301 is clamped with a cutting processing sleeve 308, and a positioning combination sleeve 309 is welded at 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 the operating movable frame 311 through a slide rail seat. The side ends of the operating movable frame 311 and the slag scraper 316 are fitted with the side ends of the cutting processing sleeve 308 to ensure the slag cleaning effect. A number of downward moving electric push rods 312 are equidistantly installed at the bottom end of the operating movable frame 311, and the bottom ends of the multiple downward moving electric push rods 312 are clamped with a combination connecting sleeve 313. A cutting motor 314 is installed at one end of the combination connecting sleeve 313 through a motor seat. A cutting blade 315 is clamped at one end of the output shaft of the cutting motor 314, and a slag scraper 316 is welded at one end of the operating movable frame 311;

[0080] Both ends of the traction moving frame 301 are equipped with alignment electric slide rails 317. One end of the alignment electric slide rail 317 is equipped with a load-bearing hydraulic cylinder 318 through a slide rail seat. The top of the load-bearing hydraulic cylinder 318 is equipped with an integrated lifting frame 319. The inner side of the integrated lifting frame 319 is symmetrically clamped with a pressing hydraulic cylinder 320. One end of the two pressing hydraulic cylinders 320 is equipped with an electric heating pressing frame 321.

[0081] In order to ensure the stable operation of the equipment, the input ends of the electric traction wheel 302, the transposition electric slide 303, the annular electric slide 310, the downward electric push rod 312, the cutting motor 314, the alignment electric slide 317, the load-bearing hydraulic cylinder 318, the pressing hydraulic cylinder 320 and the electric hot pressing frame 321 are all electrically connected to the output end of the external controller.

[0082] A plastic PVC pipe is manufactured according to the above technical solution and a method for manufacturing a plastic PVC pipe.

[0083] The working principle and use process of the present invention are as follows: When manufacturing PVC pipes, the staff puts the plastic masterbatch into the inner side of the feed extruder 234, and the feed extruder 234 heat-melts the plastic masterbatch and squeezes it into the inner side of the double-connected processing sleeve 229. When the extruded plastic enters the double-connected processing sleeve 229, the arc-shaped sealing block 242 is driven by the sealing electric push rod 241 to move along the vacuum pipe rack 238 into the inner side of the double-connected processing sleeve 229. At this time, the vacuum pipe rack 238 The inlet and outlet air pumps 239 are used to exhaust the feed extruder 234 and the double-connection processing sleeve 229. By exhausting, the residual air in the feed extruder 234 and the double-connection processing sleeve 229 is reduced to prevent the air from affecting the extruded material and improve the compactness of the feed. The double-connection processing sleeve 229 is opened by the limiting valve 230, and the extruded material flows along the double-connection processing sleeve 229 into the inner side of the storage double-cavity rack 221. The storage double-cavity rack 221 is kept warm by the heat preservation electric heater 228.

[0084] When the extruded plastic is filled in one chamber of the storage double-cavity frame 221, the compacting hydraulic cylinder 215 drives the compacting annular plate 216 to move along the forming inlet and outlet chamber 204 toward the storage double-cavity frame 221. At this time, the feed connecting pipe 217 moves to the position of the connecting sealing pipe 244, and the connecting electromagnetic column 224 and the double-hole combination plate 227 are magnetically combined. The compacting annular plate 216 drives the connecting electromagnetic column 224 and the double-hole combination plate 227 to push the linkage rack 226 to move along the storage double-cavity frame 221. The linkage rack 226 is meshed with the linkage gear 225, thereby pushing the linkage gear 225 along the storage double-cavity frame 221. As the storage double-chamber frame 221 rotates, the linkage gear 225 pushes another linkage rack 226. The linkage rack 226 drives the processing mobile frame 222 to move along the storage double-chamber frame 221 to push the inlet and outlet pusher plate 223. The inlet and outlet pusher plate 223 is used to push the extruded plastic along the connecting sealing tube 244 and the feed connecting pipe 217. The isolation electric push rod 219 drives the isolation sliding frame 220 along the isolation operating sleeve 218 and the feed connecting pipe 217 to enter the inner side of the molding inlet and outlet chamber 204. The feed connecting pipe 217 is opened, and the extruded plastic enters the inner side of the molding inlet and outlet chamber 204 to realize the feeding process.

[0085] During feeding, the other chamber of the storage double-cavity frame 221 is injected with extruded plastic, realizing simultaneous feeding of two components. During the feeding process, the arc-shaped sealing block 242 is driven by the sealing electric push rod 241 to enter the inner side of the storage double-cavity frame 221 and the molding outer mold 203. The vacuum tube frame 238 and the inlet and outlet air pump 239 exhaust the storage double-cavity frame 221 and the molding outer mold 203 to reduce the internal air content, thereby reducing bubbles in the extruded plastic. After the feeding is completed, the isolation electric push rod 219 drives the isolation slide frame 220 to reset, realizing the sealing of the feeding connecting pipe 217.

[0086] When the extruded plastic is injected, the compacting hydraulic cylinder 215 drives the compacting annular plate 216 to move along the forming inlet and outlet chamber 204 to the conducting outer exchange column 207. The compacting annular plate 216 extrude the extruded plastic and moves along the forming inlet and outlet chamber 204 and the arc inner module 205 to the position of the conducting outer exchange column 207. During the extrusion, the vacuum tube rack 238 is used for exhaust treatment to squeeze and extract the air inside the extruded plastic to achieve internal exhaust treatment. After the feeding is completed, the arc sealing block 242 is driven to reset by the sealing electric push rod 241 to achieve The internal isolation treatment is now carried out. Through arc extrusion, the extruded plastic is evenly separated and pushed to move gradually, so as to avoid the situation where the extruded plastic stays in one position for a long time and causes cooling and solidification. At the same time, through deformation treatment, it can be effectively extruded at the front end of the molding, reducing the internal bubble content. At the same time, the extrusion feeding is used to increase the feeding speed, and the insulation electric heater 228 is used for comprehensive heating to avoid cooling and solidification of the extruded plastic at the front end. At the same time, the extruded plastic at multiple positions is integrated and evenly distributed to avoid the situation where one-side discharge affects the overall production efficiency.

[0087] When the plastic is extruded, the compacting annular plate 216 drives the connecting electromagnetic column 224, the double-hole combination plate 227 and the linkage rack 226 to move and reset. At this time, the linkage gear 225 and the other linkage rack 226 drive the processing movable frame 222 and the in-and-out pushing plate 223 to reset, thereby completing the filling process of the extruded plastic inside the chamber. After the extrusion is completed, the above operation is repeated. By connecting and separating the connecting electromagnetic column 224 and the double-hole combination plate 227, the feeding position is changed, thereby achieving continuous and stable feeding process.

[0088] After the extruded plastic passes through the molding inlet and outlet cavity 204 and the arc position of the arc inner mold 205, it enters the molding position, and the cooling liquid in the cooling circulation box 201 is extracted by the annular impact pipe rack 214 and the extraction pump 243. The cooling liquid is sprayed along the annular impact pipe rack 214 to the inside of the interception limit box 211, and the cooling liquid in the interception limit box 211 is extracted by the extraction pump 243 and the injection processing pipe 213, and the cooling liquid is injected into the water injection heat exchange cavity 208 at the position of the conduction outer exchange column 207. The coolant at the cooling circulation box 201 is sprayed along the cooling injection pipe rack 231 to the interception recovery sleeve 232. The coolant at the interception recovery sleeve 232 is extracted by the operating water inlet pipe 233 and the extraction pump 243. The coolant is injected into the inner side of the forming inlet and outlet cavity 204 in the conductive inner exchange column 206. The coolant gradually fills the water injection heat exchange cavity 208. At this time, the coolant overflowing after filling is discharged into the inner side of the next water injection heat exchange cavity 208 by the special-shaped inlet and outlet pipe 209, realizing the gradual filling process of the coolant.

[0089] Repeat the above operation to gradually fill the water injection heat exchange chamber 208 at the positions of the forming outer mold 203, the arc-shaped inner mold 205, the conductive inner exchange column 206 and the conductive outer exchange column 207. The coolant flows along the external fixed pipe 210 into the inner side of the heat flow collection box 212, thereby realizing the cooling of the pipe at the forming position of the mold by the coolant heat absorption cooling. The conductive inner exchange column 206 and the conductive outer exchange column 207 are used to support and guide the pipe, and the pipe is heat exchanged and cooled. The simultaneous internal and external cooling process is used to improve the forming speed. The low-temperature coolant away from the forming position is gradually heated by absorbing heat and gradually injected into the position close to the forming position. By gradually heating the coolant and circulating the coolant internally, the pipe is cooled slowly to avoid excessive cooling speed causing large internal stress in the pipe, which affects the quality of the product. At the same time, the circulating cooling is used to recycle heat and reduce resource waste.

[0090] At this time, the cooling injection pipe rack 231 located at the discharge position directly sprays and cools the inside of the pipe. During the spraying, the inlet and outlet air pumps 239 and the elastic airbag 240 restrict the elastic expansion of the pipe and the interception and recovery sleeve 232, reducing the occurrence of splashing and overflow of the coolant. The annular impact pipe rack 214 directly sprays and cools the outside of the pipe, achieving sufficient cooling of the discharge, so that the pipe solidifies during discharge, ensuring the quality of the molding and avoiding deformation due to insufficient molding.

[0091] After the heat exchange is completed, the coolant flows along the external fixed pipe 210 into the inner side of the heat flow collection box 212. The hot coolant at the position of the heat flow collection box 212 is extracted by the extraction pump 243 and the extraction and injection pipe 236, and injected into the inner side of the interception recovery sleeve 232. The heat is absorbed by the plastic masterbatch at the position of the feed extruder 234, and the plastic masterbatch is preheated. The coolant after heat exchange and cooling flows into the inner side of the cooling circulation box 201 through the reflux operation pipe 237, so that the coolant is refluxed and reused, thereby reducing resource waste.

[0092] After the pipe is formed, it moves to the position of the electric traction wheel 302 of the traction moving frame 301, and the electric traction wheel 302 drives the pipe to move outward. When the pipe is traction-moved to the cutting length, the transposition electric slide 303 drives the lifting special-shaped plate 304 to rise along the traction moving frame 301, and the side end of the negative pressure adsorption sleeve 306 is fitted with the side end of the pipe. The adsorption treatment pipe 307 and the adsorption treatment pump 305 are used to extract the air at the connection to achieve negative pressure adsorption fixation. The positioning electric slide 317 drives the bearing hydraulic cylinder 318 to move along the traction moving frame 301. 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 hot pressing frame 321 to fit the inside of the pipe, and the inside of the pipe is subjected to electric hot extrusion injection molding to change the inner diameter of the two ends of the pipe, thereby adjusting the shape of the pipe as needed.

[0093] The pipeline is limited by the positioning combination sleeve 309, and the downward electric push rod 312 drives the combination connection sleeve 313 to move downward. The cutting motor 314 drives the cutting knife 315 to rotate, and the cutting knife 315 is used to cut the pipeline. The annular electric slide rail 310 drives the operating movable frame 311 to move along the cutting processing sleeve 308 to achieve pipeline cutting. The debris generated during cutting is thrown out to the side end of the cutting processing sleeve 308, and the operating movable frame 311 drives the slag scraper 316 to rotate along the cutting processing sleeve 308, thereby removing the debris on its surface, achieving slag cleaning, and completing the pipeline segmentation process.

[0094] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for manufacturing a plastic PVC pipe, characterized in that: The steps include: S1. Raw material preparation: Select the required plastic masterbatch according to the requirements of pipeline production, put the plastic masterbatch into the inner side of the feed extruder (234), and heat the plastic masterbatch through heat exchange barrel (235) to achieve raw material processing; S2, feeding and exhausting: extruding to the position of the double-connected processing sleeve (229) through the load-bearing limit frame (1) and the feeding extruder (234), and exhausting the internal gas by the vacuum pipe frame (238) and the inlet and outlet air pump (239) to achieve feeding and exhausting; S3, pressing and cooling: the compacting hydraulic cylinder (215) drives the compacting annular plate (216) to push and compact the extruded plastic, and injects coolant into the arc-shaped inner mold (205) and the conductive inner exchange column (206) through the special-shaped inlet and outlet pipe (209), the cooling injection pipe rack (231), the interception recovery sleeve (232), the operating water inlet pipe (233) and the extraction pump (243), thereby achieving pipeline compaction molding and cooling treatment; S4, traction cutting: The pipeline is driven to be discharged by the traction movable frame (301) and the electric traction wheel (302), the pipeline is positioned and supported by the negative pressure adsorption sleeve (306), and the pressing hydraulic cylinder (320) drives the electric heating pressing frame (321) to press and shape the two ends of the pipeline, thereby achieving pipeline shaping.

2. The method for manufacturing a plastic PVC pipe according to claim 1, characterized in that: The load-bearing limit frame (1) is provided with a separation and extrusion communication component (2); The extrusion and communication component (2) comprises a cooling circulation box (201); A cooling circulation box (201) is installed on one side of the top of the load-bearing limit frame (1); an integrated support frame (202) is clamped on the top of the cooling circulation box (201); a forming outer mold (203) is installed on one side of the top of the integrated support frame (202); a forming inlet and outlet cavity (204) is provided on the inner side of the forming outer mold (203); An arc-shaped inner mold (205) is installed at one end of the molding outer mold (203) at a position corresponding to the molding inlet and outlet cavity (204), a conductive inner exchange column (206) is clamped at one end of the arc-shaped inner mold (205), and a conductive outer exchange column (207) is installed at the top end of the integrated support frame (202) at a position corresponding to the molding outer mold (203); One end of the forming outer mold (203) is equidistantly connected to a plurality of compacting hydraulic cylinders (215), one end of the plurality of compacting hydraulic cylinders (215) is equidistantly connected to a plurality of feed connecting pipes (217) at one end of the compacting annular plate (216), an isolation operating sleeve (218) is connected to the inner side of the feed connecting pipe (217), an isolation electric push rod (219) is embedded and installed on the inner side of the isolation operating sleeve (218), one end of the isolation electric push rod (219) is connected to an isolation sliding frame (220), one end of the integrated support frame (202) is connected to a storage double-cavity frame (221), one end of the storage double-cavity frame (221) is symmetrically slidably connected to a processing movable frame (222), and one end of the processing movable frame (222) is welded with an in-and-out pushing plate (223) at a position corresponding to the storage double-cavity frame (221); One end of the compacting annular plate (216) is symmetrically clamped with a connecting electromagnetic column (224), and the side end of the storage double-chamber frame (221) is symmetrically rotatably connected with a linkage gear (225). The side end of the storage double-chamber frame (221) and one end of the processing mobile frame (222) are both installed with a linkage rack (226), one end of which is welded with a double-hole combination plate (227), and one end of the storage double-chamber frame (221) is symmetrically penetrated by a connecting sealing tube (244).

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

4. The method for manufacturing a plastic PVC pipe according to claim 2, characterized in that: Several water injection heat exchange chambers (208) are equidistantly provided on the inner sides of the forming outer mold (203), the arc-shaped inner mold (205), the conductive inner exchange column (206), and the conductive outer exchange column (207). Several special-shaped inlet and outlet pipes (209) are equidistantly connected to the inner sides of the water injection heat exchange chambers (208), wherein one end of two of the special-shaped inlet and outlet pipes (209) is connected to an outer row fixed pipe (210) via an adapter. An interception limit box (211) is clamped on one side of the top end of the cooling circulation box (201), a heat flow collection box (212) is clamped on one end of the cooling circulation box (201), an injection treatment pipe (213) is connected through one end of the interception limit box (211) at a position corresponding to the water injection heat exchange chamber (208), and an annular impact pipe rack (214) is embedded and installed on the side end of the interception limit box (211); Heat preservation electric heaters (228) are installed inside the outer molding die (203) and the storage double-cavity frame (221); a double-connection processing sleeve (229) is symmetrically passed through the bottom end of the storage double-cavity frame (221); and a limiting valve (230) is symmetrically embedded and installed on the side end of the double-connection processing sleeve (229); The side ends of the arc-shaped inner mold (205) and the conductive inner exchange column (206) are connected through a cooling injection pipe rack (231), the side end of the cooling injection pipe rack (231) is sleeved with an interception recovery sleeve (232), and one end of the interception recovery sleeve (232) is connected through an operating water inlet pipe (233) at a position corresponding to the water injection heat exchange chamber (208); A feed extruder (234) is installed at one end of the double-connected processing sleeve (229), a heat exchange barrel (235) is sleeved on the top of the side end of the feed extruder (234), an extraction and injection pipe (236) is connected through one side of the bottom end of the heat exchange barrel (235), and a reflux operation pipe (237) is connected through the top of the side end of the heat exchange barrel (235); A vacuum tube rack (238) is connected between the molding outer mold (203) and the storage double-cavity frame (221), and between the double-connected processing sleeve (229) and the feed extruder (234). One end of the integrated support frame (202) and one end of the heat flow collection box (212) are connected to the vacuum tube rack (238) at a position corresponding to the vacuum tube rack (238), and one end of the interception recovery sleeve (232) is connected to an inlet and outlet air pump (239) through a motor seat. Elastic air bags (240) are connected to the positions of the inlet and outlet air pumps (239) on both sides of one end of the interception recovery sleeve (232). A plurality of sealed electric push rods (241) are equidistantly connected to the inner side of the vacuum tube rack (238), and an arc-shaped sealing block (242) is installed at one end of the sealed electric push rod (241). An extraction pump (243) is installed 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) through a motor base.

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

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

7. The method for manufacturing 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), and the inlet and outlet air pumps (239) are connected to the vacuum pipe rack (238) via an adapter; The input ends of the compacting hydraulic cylinder (215), the isolating electric push rod (219), the connecting electromagnetic column (224), the heat-insulating electric heater (228), the limiting valve (230), the feeding extruder (234), the inlet and outlet air pumps (239), the sealing electric push rod (241) and the extraction pump (243) are all electrically connected to the output end of the external controller; The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

8. The method for manufacturing a plastic PVC pipe according to claim 7, characterized in that: The load-bearing limit frame (1) is provided with a bidirectional component (3); The branch bidirectional component (3) includes a traction mobile frame (301); A traction movable 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 movable frame (301), a plurality of transposition electric slide rails (303) are equidistantly and symmetrically embedded at the side ends of the traction movable 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) through 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); The bottom ends of the plurality of downward electric push rods (312) are clamped with a combined connecting sleeve (313), one end of the combined connecting sleeve (313) is mounted with a cutting motor (314) via a motor seat, one end of the output shaft of the cutting motor (314) is clamped with a cutting blade (315), and one end of the operating movable frame (311) is welded with a slag scraper (316); Both ends of the traction movable frame (301) are equipped with alignment electric slide rails (317), one end of the alignment electric slide rail (317) is equipped with a load-bearing hydraulic cylinder (318) through a slide rail seat, the top of the load-bearing hydraulic cylinder (318) is equipped with an integrated lifting frame (319), the inner side of the integrated lifting frame (319) is symmetrically connected with a pressing hydraulic cylinder (320), and one end of the two pressing hydraulic cylinders (320) is equipped with an electric heating pressing frame (321).

9. The method for manufacturing 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 with 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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