CN114030150A

CN114030150A - Injection molding method of three-component PDCPD material and injection machine used by injection molding method

Info

Publication number: CN114030150A
Application number: CN202111321758.1A
Authority: CN
Inventors: 赵淑豪
Original assignee: Suzhou Shuanghuan Machinery Technology Co ltd
Current assignee: Suzhou Shuanghuan Machinery Technology Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-02-11

Abstract

The invention discloses a three-component PDCPD material injection molding method and an injection machine used by the method, the method comprises a first component raw material and a second component raw material, the first component raw material comprises high-purity dicyclopentadiene monomer, other monomers and auxiliary agents, the second component raw material comprises catalysts, additives and auxiliary agents, the first component raw material and the second component raw material are respectively conveyed to a high-pressure mixing head of the injection machine by a feeding tank to be mixed and then are injected into a mold cavity to be reacted and solidified to be manufactured into products, the injection machine comprises a first feeding tank, a second feeding tank, a first pump group, a second pump group, a high-pressure mixing head, a hydraulic station, a first conveying pipeline, a second conveying pipeline, a first nitrogen supply device and a second nitrogen supply device for supplying nitrogen to the first feeding tank and the second feeding tank, the first feeding tank and the second feeding tank are respectively communicated with a feeding end of the high-pressure mixing head in a sealing way through the first conveying pipeline and the second conveying pipeline, the hydraulic station drives the high-pressure mixing head to carry out high-pressure mixing, the product produced by the invention has high strength and good quality, and the raw materials can form stable circulation.

Description

Injection molding method of three-component PDCPD material and injection machine used by injection molding method

Technical Field

The invention relates to the technical field of PDCPD material injection molding, in particular to a three-component PDCPD material injection molding method and an injection machine used by the same.

Background

Polydicyclopentadiene (abbreviated as PDCPD in English letters) engineering plastic is a novel engineering material with good mechanical and physical comprehensive properties, and simultaneously has high impact strength, high bending modulus (toughness index), high hardness, high heat deformation temperature and good ageing resistance. At present, PDCPD materials are all formed by two-component mixing injection molding, two components are mixed and then injected into a mold for molding, wherein the first component A comprises a high-purity dicyclopentadiene monomer, other monomers, a catalytic active agent and an additive, the second component B comprises a high-purity dicyclopentadiene monomer, other monomers, an inactive catalyst and an additive, the first component A and the second component B are injected into the mold after being mixed at high pressure in a mixing head of a two-component injection machine, the catalytic active agent in the mold enables the catalyst to generate activity, and then the dicyclopentadiene monomer enables the product to be obtained through chemical reaction and solidification. At present, because a catalytic active agent is distributed in a first component A and a catalyst is distributed in a second component B, the dosage of an active catalyst formed by the catalytic active agent and the catalyst cannot be adjusted in the process, and meanwhile, an active component in the first component A is easy to react after entering a mixing head, so that the first component A loses activity after injection is completed, cannot be reused, and causes pollution and trouble for recycling raw materials entering a feeding chamber of the mixing head.

Disclosure of Invention

In order to overcome the defects, the invention provides a three-component PDCPD material injection molding method and an injection machine used by the same.

The technical scheme adopted by the invention for solving the technical problem is as follows: a three-component PDCPD material injection molding method comprises a first component raw material and a second component raw material, wherein the first component raw material comprises a high-purity dicyclopentadiene monomer, other monomers and auxiliaries, the second component raw material comprises a catalyst, an additive and auxiliaries, the first component raw material is stored in a sealing mode through at least one feeding tank, the second component raw material is stored in a sealing mode through one feeding tank, each feeding tank is communicated with a high-pressure mixing head of an injection machine through a conveying pipeline, one or more paths of the first component raw material and the second component raw material are uniformly mixed in the mixing head, and then mixed liquid is injected into a mold cavity to react and solidify to obtain a product.

A three-component PDCPD material injection machine comprises a first feed tank, a second feed tank, a first pump set, a second pump set, a high-pressure mixing head, a hydraulic station, a first conveying pipeline, a second conveying pipeline, a first nitrogen supply device, a second nitrogen supply device and a control system, wherein first component raw materials are stored in at least one first feed tank in a sealing manner, second component raw materials are stored in the second feed tank in a sealing manner, each first feed tank is respectively communicated with the feeding end of the high-pressure mixing head in a sealing manner through the first conveying pipeline, the second feed tank is communicated with the feeding end of the high-pressure mixing head in a sealing manner through the second conveying pipeline, the hydraulic station drives the high-pressure mixing head to perform high-pressure mixing on two paths of raw materials entering the high-pressure mixing head, an injection nozzle capable of being communicated with the feeding port of a PD PDCP forming die is further arranged on the high-pressure mixing head, the first pump set and the second pump set can respectively pump the raw materials in the first feed tank and the second feed tank into the high-pressure mixing head through the first conveying pipeline and the second conveying pipeline, the first nitrogen supply device and the second nitrogen supply device respectively supply nitrogen to the first feeding tank and the second feeding tank, and the control system controls the first pump set, the second pump set, the hydraulic station, the first nitrogen supply device and the second nitrogen supply device to work.

As a further improvement of the invention, the first component raw materials are respectively loaded in two first feeding tanks, the two first feeding tanks are respectively communicated with a high-pressure mixing head of the injection machine through a first conveying pipeline, and two paths of the first component raw materials and one path of the second component raw materials are simultaneously injected and mixed in the high-pressure mixing head of the injection machine.

As a further improvement of the present invention, a first flowmeter system and a second flowmeter system are respectively arranged on the first conveying pipeline and the second conveying pipeline, the first flowmeter system and the second flowmeter system are respectively capable of acquiring flow data of liquid in the first conveying pipeline and the second conveying pipeline, and the first flowmeter system and the second flowmeter system are respectively in electrical connection and communication with the control system.

As a further improvement of the present invention, a first material temperature sensing device and a second material temperature sensing device are further respectively arranged on the first feeding tank and the second feeding tank, the first material temperature sensing device and the second material temperature sensing device are respectively capable of sensing the temperature of the raw material liquid in the first feeding tank and the second feeding tank, the first material temperature sensing device and the second material temperature sensing device are respectively in electrical connection and communication with the control system, cooling water flow channels are further arranged on the side walls of the first feeding tank and the second feeding tank, and a water circulation temperature control machine is further arranged, and the water circulation temperature control machine is respectively communicated with the cooling water flow channels of the first feeding tank and the second feeding tank through water pipes to form a circulation cooling loop.

As a further improvement of the invention, the feeding device is further provided with a heat exchanger and a heat exchange control valve, an internal circulation branch pipeline is arranged on the first conveying pipeline, the internal circulation branch pipeline is communicated with the inner side of the first feeding tank in a sealing manner after passing through the heat exchanger, the heat exchange control valve can control the on-off of the internal circulation branch pipeline, the heat exchange control valve is electrically connected and communicated with a control system, and the control system controls the start-stop work of the heat exchanger.

As a further improvement of the invention, the high-pressure mixing head comprises at least one first component feeding chamber, a second component feeding chamber, a mixing chamber, a stabilizing chamber and a feeding piston, wherein the liquid outlet end of each first return pipeline is respectively and correspondingly communicated with each internal circulation branch pipeline, the liquid outlet end of the second return pipeline is hermetically communicated with a second feeding tank, the liquid outlet end of each first conveying pipeline is respectively communicated with each first component feeding chamber, each first component feeding chamber is also communicated with the liquid inlet end of each first return pipeline, the liquid outlet end of the second conveying pipeline and the liquid inlet end of the second return pipeline are respectively communicated with the second component feeding chamber, the feeding piston is respectively capable of feeding raw materials in each first component feeding chamber and the second component feeding chamber into the feeding end of the mixing chamber, the discharge end of the mixing chamber is communicated with the stabilizing chamber, the stabilizing chamber is communicated with the injection nozzle, a first linkage valve group is arranged in each first component feeding chamber, a second linkage valve group is arranged in each second component feeding chamber, the first linkage valve group can control the opening of one of a first conveying pipeline and a first backflow pipeline which are communicated with the first component feeding chambers, the second linkage valve group can control the opening of one of a second conveying pipeline and a second backflow pipeline which are communicated with the second component feeding chambers, and the control system controls the first linkage valve group and the second linkage valve group to synchronously act.

As a further improvement of the invention, each first return pipeline is provided with a metering control valve and a return metering device, the return metering devices and the return metering devices can respectively meter the flow in the first return pipeline, each return metering device is electrically connected and communicated with a control system, the metering control valves control the start and stop of the return metering devices, and the control system controls the linkage and synchronous start and stop of the metering control valves on each first return pipeline.

As a further improvement of the invention, the first pump group is a high-pressure metering pump, the second pump group is a gear pump, the first conveying pipeline is further provided with a first pressure sensor, an overflow system, a pressure relief device and a booster pump system, the second conveying pipeline is provided with a second pressure sensor, the first pressure sensor and the second pressure sensor can respectively sense the liquid pressure in the first conveying pipeline and the second conveying pipeline, the first pressure sensor and the second pressure sensor are respectively and electrically connected and communicated with a control system, the control system controls the start and stop of the overflow system, the pressure relief device and the booster pump system, and the control system also controls the output pressure of the second pump group.

As a further improvement of the present invention, the first conveying pipeline and the second conveying pipeline are further provided with a first filter and a second filter, the first filter and the second filter respectively filter the raw materials conveyed in each conveying pipeline, the first conveying pipeline and the second conveying pipeline are further provided with a first pump suction pressure sensing device and a second pump suction pressure sensing device, the first component supply tank and the second component supply tank are further provided with a first liquid level meter and a second liquid level meter, and the first pump suction pressure sensing device, the second pump suction pressure sensing device, the first liquid level meter and the second liquid level meter are respectively in electrical connection and communication with the control system.

The invention has the beneficial effects that: the invention stores the first component material without catalytic component and the second component material with catalyst component in different material tanks, the two different components are mixed in the high pressure mixing head of the injection machine, and then injected into the forming mould, the second component material with inner catalyst component and the first component material without catalyst component are polymerized and solidified, the invention also separates the first component material into two material tanks to be packaged and stored, and transmits them by two transmission pipelines, the multi-path material forms steady flow and fully mixes in the high pressure mixing head, the invention fully ensures the material to be uniformly mixed in the high pressure mixing head, ensures the additive to be uniformly dispersed in the formed product, enhances the product strength, and because the catalyst is stored and transmitted separately, the catalyst component does not exist in the first component material, the material which is not mixed in the material chamber of the high pressure mixing head can return to the material tank when the mould is formed, the catalyst is independently stored and conveyed, so that the dosage of the catalyst and additives can be adjusted according to actual conditions, the quality of a formed product is further ensured, a high-rigidity product can be produced, a three-liquid injection blocking technology can be switched to form the high-rigidity product, and the product prepared by the method has two shops with high rigidity and low linear expansion coefficient; the rigidity is 2 times of that of the traditional material, and the linear expansion coefficient is only half of that of the traditional material.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of the feeding of two first component feed tanks according to the present invention;

fig. 3 is a hydraulic schematic of the present invention.

Detailed Description

Example (b): a three-component PDCPD material injection molding method comprises a first component raw material and a second component raw material, wherein the first component raw material comprises a high-purity dicyclopentadiene monomer, other monomers and auxiliaries, the second component raw material comprises a catalyst, an additive and auxiliaries, the first component raw material is stored in a sealing mode through at least one feeding tank, the second component raw material is stored in a sealing mode through one feeding tank, each feeding tank is communicated with a high-pressure mixing head 5 of an injection machine through a conveying pipeline, one or more paths of the first component raw material and the second component raw material are uniformly mixed in the mixing head, and then mixed liquid is injected into a mold cavity to react and solidify to obtain a product. The catalyst is stored and conveyed independently in the high-pressure mixing head 5 of the injection machine, the first component raw material and the second component raw material are injected into the forming die after being fully mixed in the high-pressure mixing head 5, the mixture is subjected to chemical reaction in the forming die to polymerize and solidify to form a product, the catalyst is stored and conveyed independently before entering the high-pressure mixing head 5 and is not contacted with the PDCPD main material, so that the raw materials can be favorably injected into the die, the raw materials in a feeding chamber of the high-pressure mixing head 5 can be returned for recycling, the pollution of the first component raw material is avoided, the dosage of the second component raw material can be adjusted according to needs, and the improvement of the rigidity and the quality of the product is facilitated.

A three-component PDCPD material injection machine comprises a first feed tank 1, a second feed tank 2, a first pump group 3, a second pump group 4, a high-pressure mixing head 5, a hydraulic station 6, a first conveying pipeline 7, a second conveying pipeline 8, a first nitrogen supply device 9, a second nitrogen supply device 10 and a control system 11, wherein first component raw materials are stored in at least one first feed tank 1 in a sealing manner, second component raw materials are stored in the second feed tank 2 in a sealing manner, each first feed tank 1 is respectively communicated with the feeding end of the high-pressure mixing head 5 in a sealing manner through the first conveying pipeline 7, the second feed tank 2 is communicated with the feeding end of the high-pressure mixing head 5 in a sealing manner through the second conveying pipeline 8, the hydraulic station 6 drives the high-pressure mixing head 5 to carry out high-pressure mixing on multi-path two kinds of raw materials entering the high-pressure mixing head 5, an injection nozzle capable of being communicated with the feeding port of a PDCPD forming mold is further arranged on the high-pressure mixing head 5, the first pump group 3 and the second pump group 4 can respectively pump raw materials in the first feeding tank 1 and the second feeding tank 2 into the high-pressure mixing head 5 through the first conveying pipeline 7 and the second conveying pipeline 8, the first nitrogen supply device 9 and the second nitrogen supply device 10 respectively supply nitrogen to the first feeding tank 1 and the second feeding tank 2, and the control system 11 controls the first pump group 3, the second pump group 4, the hydraulic station 6, the first nitrogen supply device 9 and the second nitrogen supply device 10 to work. The first component raw materials formed by PDCPD main materials and the second component raw materials formed by catalysts and additives are respectively placed in a first feeding tank 1 and a second feeding tank 2 for sealed storage, and are respectively pumped into a high-pressure mixing head 5 by a first pump group 3 and a second pump group 4 for mixing, and nitrogen is automatically supplemented into the first feeding tank 1 and the second feeding tank 2 along with the discharging of the raw materials, so that the oxidation of the raw materials is avoided.

The first component raw materials are respectively arranged in two first feeding tanks 1, the two first feeding tanks 1 are respectively communicated with a high-pressure mixing head 5 of an injection machine through a first conveying pipeline, and two paths of the first component raw materials and one path of the second component raw materials are simultaneously injected and mixed in the high-pressure mixing head 5 of the injection machine. Because the quantity of the second component raw materials is small, the two first component raw materials are mixed in the high-pressure mixing head 5 in a mode of arranging the two first component raw materials, so that the raw materials are favorably form a steady flow in the high-pressure mixing head 5, the raw materials are fully mixed, the uneven mixing is avoided, the improvement of the main material flow can be realized by pumping the two first component raw materials, and the production of large products is realized.

The first conveying pipeline 7 and the second conveying pipeline 8 are respectively provided with a first flowmeter system 12 and a second flowmeter system 13, the first flowmeter system 12 and the second flowmeter system 13 can respectively acquire flow data of liquid in the first conveying pipeline 7 and the second conveying pipeline 8, and the first flowmeter system 12 and the second flowmeter system 13 are respectively in electric connection and communication with the control system 11.

The original conveying flow in the first conveying pipeline 7 and the second conveying pipeline 8 is detected through the first flowmeter system 12 and the second flowmeter system 13, so that the control system 11 can calculate the raw material feeding amount of the two components conveniently, the feeding flow can be increased when the feeding amount is insufficient, and the feeding is stopped when the feeding amount is reached.

Still be equipped with first material temperature induction system 14 and second material temperature induction system 15 on first feed jar 1 and the second feed jar 2 respectively, first material temperature induction system 14 and second material temperature induction system 15 can respond to raw materials liquid temperature in first feed jar 1 and the second feed jar 2 respectively, first material temperature induction system 14 and second material temperature induction system 15 communicate with control system 11 electric connection respectively, still be equipped with the cooling water runner on the jar body lateral wall of first feed jar 1 and second feed jar 2, still be equipped with water circulation temperature-controlling machine 16, water circulation temperature-controlling machine 16 leads to pipe to communicate with the cooling water runner of first feed jar 1 and second feed jar 2 respectively and forms the circulative cooling return circuit. Through set up temperature-sensing device on the feed tank, be convenient for real-time supervision feed tank raw materials temperature to control the temperature for the feed tank cooling through hydrologic cycle temperature-control machine 16.

Still be equipped with heat exchanger 17 and heat transfer control valve 18, be equipped with inner loop branch pipeline 19 on the first pipeline 7, inner loop branch pipeline 19 is through heat exchanger 17 back and the sealed intercommunication in first feed tank 1 inboard, and the break-make of inner loop branch pipeline 19 can be controlled to heat transfer control valve 18, and heat transfer control valve 18 and control system 11 electric connection communication, control system 11 control heat exchanger 17 open and stop work. Because the raw materials quantity is big among the first component feed jar, and the heat is high, when raw materials temperature was too high in the first component feed jar, heat transfer control valve 18 was opened, and the raw materials gets into internal circulation branch pipe 19 in, returns first component feed jar after the heat exchanger 17 heat transfer in, realizes rapid cooling's effect.

The high-pressure mixing head 5 comprises at least one first component feeding chamber, at least one second component feeding chamber, at least one mixing chamber, at least one stabilizing chamber and at least one feeding piston, wherein the liquid outlet end of each first return pipeline 20 is correspondingly communicated with each internal circulation branch pipeline 19, the liquid outlet end of each second return pipeline 21 is hermetically communicated with the second feeding tank 2, the liquid outlet end of each first conveying pipeline 7 is communicated with each first component feeding chamber, each first component feeding chamber is also communicated with the liquid inlet end of each first return pipeline 20, the liquid outlet end of each second conveying pipeline 8 and the liquid inlet end of each second return pipeline 21 are respectively communicated with the second component feeding chambers, the feeding pistons can respectively convey the raw materials in each first component feeding chamber and each second component feeding chamber into the feeding ends of the mixing chambers, the discharge ends of the mixing chambers are communicated with the stabilizing chambers, the stabilizing chamber is communicated with the injection nozzle, a first linkage valve group 22 is arranged in each first component feeding chamber, a second linkage valve group 23 is arranged in each second component feeding chamber, the first linkage valve group 22 can control the opening of one of a first conveying pipeline 7 and a first return pipeline 20 which are communicated with the first component feeding chambers, the second linkage valve group can control the opening of one of a second conveying pipeline 8 and a second return pipeline 21 which are communicated with the second component feeding chambers, and the control system 11 controls the first linkage valve group 22 and the second linkage valve group 23 to synchronously act.

First component raw materials and second component raw materials get into high-pressure mixing head 5 in, after the injection is accomplished, first linkage valves 22 and the first and second transfer piping 8 of linkage valves in the feeding chamber in the high-pressure mixing head 5 are closed first pipeline 7 and second pipeline 21, open first return line 20 and second return line 21, and the first return line 20 and the second return line 21 backward flow formation circulation of using can be followed to the indoor raw materials of feeding of high-pressure mixing head 5.

Each first backflow pipeline 20 is provided with a metering control valve 24 and a backflow metering device 25, the backflow metering devices 25 and the backflow metering devices 25 can respectively meter the flow in the first backflow pipeline, each backflow metering device 25 is in electrical connection and communication with the control system 11, the metering control valves 24 control the backflow metering devices 25 to start and stop, and the control system 11 controls the metering control valves 24 on the first backflow pipelines 20 to synchronously start and stop in a linkage manner. The first component material flowing back through the first return line can be metered by the return metering device 25, which facilitates calculation of the amount of material in the first component feed tank.

First pump package 3 is the high pressure measuring pump, and second pump package 4 is the gear pump, still is equipped with first pressure sensor 26, overflow system 27, pressure relief device 28 and booster pump system 29 on the first pipeline 7, is equipped with second pressure sensor 30 on the second pipeline, liquid pressure in first pipeline 7 and the second pipeline 8 can be responded to respectively to first pressure sensor 26 and second pressure sensor 30, and first pressure sensor 26 and second pressure sensor 30 communicate with 11 electric connection of control system respectively, and 11 control overflow system 27 of control system, pressure relief device 28 and booster pump system 29 open and stop work, and control system 11 still controls the output pressure of second pump package 4. Through the mode, the raw material flow and the pressure conveyed in the first conveying pipeline 7 and the second conveying pipeline 8 can be adjusted, the overlarge or undersize flow and pressure is avoided, the stable feeding is ensured, the sufficient forming of products is ensured, and the occurrence of the material shortage condition is prevented.

The first conveying pipeline 7 and the second conveying pipeline 8 are further provided with a first filter 31 and a second filter 32 respectively, the first filter 31 and the second filter 32 filter raw materials conveyed in each conveying pipeline respectively, the first conveying pipeline 7 and the second conveying pipeline 8 are further provided with a first pump suction pressure sensing device 33 and a second pump suction pressure sensing device 34 respectively, the first component supply tank and the second component supply tank are further provided with a first liquid level meter 35 and a second liquid level meter 36 respectively, and the first pump suction pressure sensing device 33, the second pump suction pressure sensing device 34, the first liquid level meter 35 and the second liquid level meter 36 are in electric connection communication with the control system 11 respectively. The raw materials are filtered through the filter, and the influence on the quality of products caused by the fact that impurities enter the forming die is avoided.

Claims

1. A three-component PDCPD material injection molding method is characterized in that: the injection molding machine comprises a first component raw material and a second component raw material, wherein the first component raw material comprises a high-purity dicyclopentadiene monomer, other monomers and auxiliaries, the second component raw material comprises a catalyst, an additive and auxiliaries, the first component raw material is stored in a sealed mode through at least one feeding tank, the second component raw material is stored in a sealed mode through one feeding tank, each feeding tank is communicated with a high-pressure mixing head of an injection machine through a conveying pipeline, one or more paths of the first component raw material and the second component raw material are mixed uniformly in the mixing head, and then mixed liquid is injected into a mold cavity to react and solidify to form a product.

2. A three-component PDCPD material injection machine for use in claim 1, characterized in that: comprises a first feeding tank (1), a second feeding tank (2), a first pump group (3), a second pump group (4), a high-pressure mixing head (5), a hydraulic station (6), a first conveying pipeline (7), a second conveying pipeline (8), a first nitrogen supply device (9), a second nitrogen supply device (10) and a control system (11), wherein first component raw materials are stored in at least one first feeding tank in a sealing way, second component raw materials are stored in the second feeding tank in a sealing way, each first feeding tank is respectively communicated with the feeding end of the high-pressure mixing head in a sealing way through the first conveying pipeline, the second feeding tank is communicated with the feeding end of the high-pressure mixing head in a sealing way through the second conveying pipeline, the hydraulic station drives the high-pressure mixing head to carry out high-pressure mixing on two kinds of raw materials entering the high-pressure mixing head, and an injection nozzle capable of being communicated with the feeding port of a PDCPD forming die is further arranged on the high-pressure mixing head, first pump package and second pump group can go into the high-pressure mixing head with the raw materials in first feed jar and the second feed jar respectively through first pipeline and second pipeline pump, and first nitrogen supply device and second supply nitrogen device supply nitrogen gas for first feed jar and second feed jar respectively, and control system controls first pump package, second pump package, hydraulic pressure station, first nitrogen supply device and second and supplies nitrogen device work.

3. The three-component PDCPD material injection machine of claim 2, wherein: the first component raw materials are respectively arranged in two first feeding tanks, the two first feeding tanks are respectively communicated with a high-pressure mixing head of an injection machine through a first conveying pipeline, and two paths of the first component raw materials and one path of the second component raw materials are simultaneously injected and mixed in the high-pressure mixing head of the injection machine.

4. The three-component PDCPD material injection machine according to claim 2 or 3, wherein: and a first flowmeter system (12) and a second flowmeter system (13) are respectively arranged on the first conveying pipeline and the second conveying pipeline, the first flowmeter system and the second flowmeter system can respectively acquire flow data of liquid in the first conveying pipeline and the second conveying pipeline, and the first flowmeter system and the second flowmeter system are respectively in electric connection and communication with the control system.

5. The three-component PDCPD material injection machine of claim 2, wherein: still be equipped with first material temperature induction system (14) and second material temperature induction system (15) on first feed jar and the second feed jar respectively, raw materials liquid temperature in first feed jar and the second feed jar can be responded to respectively to first material temperature induction system and second material temperature induction system, first material temperature induction system and second material temperature induction system communicate with control system electric connection respectively, still be equipped with the cooling water runner on the jar body lateral wall of first feed jar and second feed jar, still be equipped with water circulation temperature control machine (16), water circulation temperature control machine leads to pipe and forms the circulative cooling return circuit with the cooling water runner intercommunication of first feed jar and second feed jar respectively.

6. The three-component PDCPD material injection machine of claim 5, wherein: still be equipped with heat exchanger (17) and heat transfer control valve (18), be equipped with inner loop branch road pipeline (19) on the first pipeline, inner loop branch road pipeline is through the heat exchanger after with the inboard sealed intercommunication of first feed tank, the break-make of inner loop branch road pipeline can be controlled to the heat transfer control valve, heat transfer control valve and control system electric connection communication, control system control heat exchanger open and stop work.

7. The three-component PDCPD material injection machine of claim 6, wherein: the high-pressure mixing head is further provided with a first backflow pipeline (20), a second backflow pipeline (21), a first linkage valve group (22) and a second linkage valve group (23), the high-pressure mixing head comprises at least one first component feeding chamber, a second component feeding chamber, a mixing chamber, a stabilizing chamber and a feeding piston, the liquid outlet end of each first backflow pipeline is respectively communicated with each internal circulation branch pipeline correspondingly, the liquid outlet end of the second backflow pipeline is communicated with a second feeding tank in a sealing manner, the liquid outlet end of each first conveying pipeline is respectively communicated with each first component feeding chamber, each first component feeding chamber is also communicated with the liquid inlet end of each first backflow pipeline, the liquid outlet end of the second conveying pipeline and the liquid inlet end of the second backflow pipeline are respectively communicated with the second component feeding chamber, the feeding piston can respectively convey the raw materials in each first component feeding chamber and the second component feeding chamber into the feeding chamber, the discharge end of the mixing chamber is communicated with the stabilizing chamber, the stabilizing chamber is communicated with the injection nozzle, a first linkage valve group is arranged in each first component feeding chamber, a second linkage valve group is arranged in each second component feeding chamber, the first linkage valve group can control the opening of one of a first conveying pipeline and a first backflow pipeline which are communicated with the first component feeding chambers, the second linkage valve group can control the opening of one of a second conveying pipeline and a second backflow pipeline which are communicated with the second component feeding chambers, and the control system controls the first linkage valve group and the second linkage valve group to synchronously act.

8. The three-component PDCPD material injection machine of claim 7, wherein: be equipped with metering control valve (24) and backward flow metering device (25) on each first return line, backward flow metering device and backward flow metering device can measure the flow in the first return line respectively, and each backward flow metering device communicates with control system electric connection, and metering control valve control backward flow metering device opens and stops, the synchronous start-stop of metering control valve linkage on each first return line of control system control.

9. The three-component PDCPD material injection machine of claim 2, wherein: first pump package is the high pressure measuring pump, and the second pump package is the gear pump, still is equipped with first pressure sensor (26), overflow system (27), pressure relief device (28) and booster pump system (29) on the first pipeline, is equipped with second pressure sensor (30) on the second pipeline, liquid pressure in first pipeline and the second pipeline can be responded to respectively to first pressure sensor and second pressure sensor, and first pressure sensor and second pressure sensor communicate with control system electric connection respectively, and control system control overflow system, pressure relief device and booster pump system open and stop work, and control system still controls the output pressure of second pump package.

10. The three-component PDCPD material injection machine of claim 2, wherein: first pipeline and second pipeline still are equipped with first filter (31) and second filter (32) respectively, the raw materials that carry in each pipeline are filtered respectively to first filter and second filter, still be equipped with first pump suction pressure induction system (33) and second pump suction pressure induction system (34) on first pipeline and the second pipeline respectively, still be equipped with first level gauge (35) and second level gauge (36) on first component feed jar and the second component feed jar respectively, first pump suction pressure induction system, second pump suction pressure induction system, first level gauge and second level gauge communicate with control system electric connection respectively.