Two-component HP-RTM equipment and building method

Abstract

The invention discloses two-component HP-RTM equipment and a building method. The two-component HP-RTM equipment comprises an equipment installation frame, and a cleaning agent tank, an A component stirring tank and a B component stirring tank are installed in three assembly holes in the equipment frame respectively; two metering pumping assemblies and two vacuum pumps are arranged on the transverse plate, the two vacuum pumps are connected with the top inlet ends of the A component stirring tank body and the B component stirring tank body through pipelines respectively, and the two metering pumping assemblies are connected with the bottom outlet ends of the A component stirring tank body and the B component stirring tank body through pipelines respectively; the lifting assembly is arranged on one side of the equipment mounting frame, and the action end of the lifting assembly is connected with a mixed glue injection head; the mixed glue injection head is provided with two feed ports, two return ports and a discharge port, and the two feed ports are respectively connected with the two metering pumping assemblies through pipelines; the two material return ports are respectively connected with the component A stirring tank body and the component B stirring tank body through pipelines; and a control valve is arranged in the mixed glue injection head, so that equipment construction is completed.

Description

Technical Field

[0001] The invention relates to the technical field of two-component HP-RTM glue injection, and in particular to a two-component HP-RTM device and a construction method. Background Art

[0002] High-pressure resin transfer molding, referred to as HP-RTM molding process, refers to the use of high pressure to mix and inject resin into a vacuum-tight mold pre-laid with fiber reinforcement materials and pre-set inserts, and then obtain composite products through resin flow filling, impregnation, curing and demolding. HP-RTM molding process is used in many fields such as aerospace and the development direction of fiber composite materials due to its large-scale, high-quality, low-cost and short-cycle characteristics.

[0003] However, HP-RTM equipment is relatively complex, and there is no independent research system from equipment to process. At present, there is a lack of HP-RTM equipment integrity and construction methods for the equipment to be built as a whole, as well as a lack of reference for the construction of complete equipment connected as a whole. Summary of the invention

[0004] The object of the present invention is to provide a two-component HP-RTM device and a construction method to solve the technical problems in the prior art, that is, the lack of HP-RTM device integrity and construction method in the aspect of HP-RTM device construction into a whole, and the lack of construction reference for connecting the complete device into a whole.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A two-component HP-RTM device, comprising:

[0007] An equipment installation frame, on which three assembly holes are provided, wherein the three assembly holes are respectively used for installing a cleaning agent tank body, an A component stirring tank body, and a B component stirring tank body;

[0008] A horizontal plate is arranged at the bottom of the equipment installation frame, and two metering pumping assemblies and two vacuum pumps are arranged on the horizontal plate. The two vacuum pumps are respectively connected to the top inlet ends of the A component stirring tank body and the B component stirring tank body through pipelines, and the two metering pumping assemblies are respectively connected to the bottom outlet ends of the A component stirring tank body and the B component stirring tank body through pipelines;

[0009] A lifting assembly is arranged on one side of the equipment installation frame, an action end of the lifting assembly is connected to a mixing glue injection head, and the lifting assembly is used to adjust the vertical position of the mixing glue injection head;

[0010] The mixing and injection head has two feed ports, two return ports and one discharge port, the two feed ports are respectively connected to the two metering pumping components through pipelines; the two return ports are respectively connected to the A component stirring tank body and the B component stirring tank body through pipelines;

[0011] A control valve is arranged in the mixing and injection head, and the control valve is used to close the discharge port and connect the feed port and the return port, or to close the return port and connect the feed port and the discharge port.

[0012] As a preferred solution of the present invention, the outer surfaces of the A component stirring tank and the B component stirring tank are both provided with silicone heating belts.

[0013] As a preferred solution of the present invention, the metering pumping assembly includes a gear pump body, a reducer and a servo motor, the reducer is connected to the rotating shaft of the driving gear of the gear pump body through a coupling, and the servo motor is connected to the reducer.

[0014] As a preferred solution of the present invention, the mixed glue injection head comprises a glue injection head body, a material injection head is arranged at the bottom of the glue injection head body, an end of the material injection head away from the glue injection head body forms a discharge port, and two material cavities are arranged inside the glue injection head body, and both of the material cavities are connected to the material injection head through an inner pipe and communicated with the discharge port;

[0015] A feed inlet and a return inlet communicating with the material cavity are provided in the inner wall of the glue injection head body corresponding to each material cavity;

[0016] The control valve includes a first control valve provided on the glue injection head body corresponding to the feed port, and is used to control the material body in the feed port to enter the material cavity.

[0017] As a preferred solution of the present invention, a cleaning agent injection channel and a compressed air injection channel connected to the material cavity are provided in the inner wall of the glue injection head body corresponding to each material cavity, and the cleaning agent injection channel is connected to the cleaning agent tank through a pipeline;

[0018] The control valve further includes a second control valve provided on the head glue injection body corresponding to the cleaning agent injection channel and a third control valve provided on the head glue injection body corresponding to the compressed air injection channel;

[0019] The second control valve is used to control the cleaning liquid in the cleaning agent injection channel to enter the material cavity;

[0020] The third control valve is used to control the compressed air in the compressed air injection channel to enter the material cavity;

[0021] Among them, by closing the first control valve, opening the second control valve and the third control valve in sequence, the cleaning liquid in the cleaning agent injection channel and the compressed air in the compressed air injection channel enter the material cavity and are discharged through the discharge port.

[0022] As a preferred solution of the present invention, the feed port is located at the opening on the surface of the head injection body and is threadedly connected to a feed seat, a first cavity and a second cavity are arranged in the feed seat from bottom to top, the first cavity is connected to the material cavity, a feed adapter is arranged on the injection head body corresponding to the first cavity, and a discharge adapter is arranged on the injection head body corresponding to the second cavity;

[0023] The first control valve is arranged on the top of the feed seat, and the first control valve is used to control the communication between the first cavity and the feed cavity, or to control the communication between the first cavity and the second cavity;

[0024] The first control valve comprises a valve stem and a driving part, and the valve stem passes through the second cavity and the first cavity and enters the material cavity;

[0025] The driving unit drives the valve stem to move upward to the end of the valve stem to close the connection between the first cavity and the material cavity, thereby closing the connection between the first cavity and the material cavity;

[0026] Or the driving part drives the valve stem to move downward to the end of the valve stem to enter the material cavity, and the first cavity is connected with the material cavity; the rod body of the valve stem closes the connection between the first cavity and the second cavity.

[0027] As a preferred solution of the present invention, the injection head comprises an inner tube body and an outer tube body sleeved on the inner tube body, wherein the outer tube body has at least a portion of the inner tube body protruding from the top of the outer tube body, an axial rod is axially arranged inside the inner tube body, and a plurality of guide wings are evenly arranged circumferentially on the end surface of the axial rod extending to the inner bottom of the outer tube body, and the other ends of the plurality of guide wings are connected to the inner wall of the outer tube body;

[0028] An axial driving part connected to the top of the shaft is arranged inside the main body of the injection head, and the axial driving part is used to drive the shaft to move up and down along the axial direction of the shaft, thereby driving the outer tube body to move up and down relative to the inner tube body.

[0029] As a preferred solution of the present invention, the axial drive portion includes a sealed cavity arranged in the main body of the injection head, a driving piston is arranged in the sealed cavity, the driving piston is connected to the top of the shaft, the driving piston divides the sealed cavity into an upper cavity and a lower cavity, the upper cavity is connected to one of the two material cavities through a first pipe, and the lower cavity is connected to the other material cavity through a second pipe;

[0030] The high-pressure gas alternately introduced into the two material chambers allows the high-pressure gas to enter the upper chamber through the first pipe or enter the lower chamber through the second pipe, thereby driving the shaft to move up and down.

[0031] The present invention provides a method for constructing a two-component HP-RTM device, which includes the following specific steps:

[0032] Step 100, determining component modules according to the implementation requirements of the two-component HP-RTM equipment, specifically including a stirring module, a metering module and a mixing module;

[0033] The stirring module includes a stirring tank for component A and a stirring tank for component B;

[0034] The metering module includes a gear pump or a plunger pump, a reducer and a servo motor;

[0035] The mixing module includes a mixing and dispensing head;

[0036] Step 200, selecting each stirring module, metering module and mixing module, specifically includes:

[0037] According to the stirring tank volume of the stirring tank of component A and component B and the physicochemical property parameters of the corresponding components, the agitator is determined, and a three-dimensional model is built for the agitator. The obtained model is divided into a static domain and a dynamic domain in the tank, and the rotation speed is determined based on the stirring experience of the components; the flow state of the components is determined according to the Reynolds number, and the relevant model is selected for calculation; quantitative and qualitative analysis is performed by setting monitoring points and cloud maps in the model; and the influence degree of the influencing factors is ranked through orthogonal experiments, and the model is reconstructed for verification, and the selection of the stirring tank of component A and component B is completed;

[0038] Determine the flow rate of the component delivery of the equipment according to the injection volume of the mold, and select the gear pump or plunger pump as the component delivery power source in the metering module; determine the reducer and servo motor according to the load of the equipment; convert the servo motor speed according to the flow rate and pressure of the equipment, and allocate the corresponding flow rate of the metering module of the A component mixing tank and the B component mixing tank under different ratios and the same pressure, so that the components in the A component mixing tank and the B component mixing tank can be delivered according to the set ratio;

[0039] According to the mixing of the components of the A component stirring tank and the B component stirring tank and the control valve based on the hydraulic control form, the connection state of the feed port, the return port and the discharge port is controlled, and the mixing injection head of the mixing module and the flow channel inside the mixing injection head connecting the feed port, the return port and the discharge port are designed;

[0040] Step 300: Establish connections between modules of the device according to the flow direction of components in the device.

[0041] As a preferred solution of the present invention, the injection pressure of the mixed injection head on the mold is less than 3Mpa, and the component delivery power source in the metering module adopts a gear pump; when the injection pressure is greater than 3Mpa, the component delivery power source in the metering module adopts a plunger pump.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention proposes a method for building a HP-RTM device and a device connection method, including structural optimization from mixing tank design to simulation, selection considerations of a metering system, design criteria for a glue injection head and a simulation process. The device is built according to the component flow direction. The building method can divide complex equipment into several subsystems, which is helpful for the research and development of HP-RTM equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0045] Figure 1 A schematic diagram of the overall structure of a system according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the overall structure of a stirring tank according to an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the structure of a filtering device according to an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of the main structure of the glue injection head according to an embodiment of the present invention;

[0049] Figure 5 This is a schematic cross-sectional structure diagram of a glue injection head body according to an embodiment of the present invention;

[0050] Figure 6 This is a schematic structural diagram of the main part of the glue injection head according to an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the main structure of a glue injection head provided with an injection head according to an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of the overall structure of the two-component HP-RTM equipment according to an embodiment of the present invention.

[0053] Fig. 9 It is a schematic diagram of the structure of a metering pumping assembly according to an embodiment of the present invention;

[0054] Fig.10 A line graph showing the floating degree of components at different monitoring points set on the inner pipe according to an embodiment of the present invention;

[0055] Fig.11 The table and line graph of the results of different injection head axial lengths in the injection and mixing simulation of two symmetrically distributed inner pipes according to the embodiment of the present invention;

[0056] Fig.12 This is a simulation data table of glue injection mixing with two symmetrically distributed inner pipes when the injection head is in a spiral pipe structure according to an embodiment of the present invention;

[0057] Fig.13 It is a schematic structural diagram of an injection head with a spiral pipeline structure according to an embodiment of the present invention.

[0058] The numbers in the figure represent the following:

[0059] 1- glue injection head body; 2- injection head; 3- material outlet; 4- material cavity; 5- inner pipeline; 6- material inlet; 7- cleaning agent injection channel; 8- compressed air injection channel; 9- first control valve; 10- second control valve; 11- third control valve; 12- material feed seat; 13- equipment installation frame;

[0060] 14-mixing tank; 15-metering pumping assembly; 16-inlet end; 17-outlet end; 18-feeding barrel; 19-mixer; 20-filtering device;

[0061] 141-tank body; 142-funnel piece; 143-upper stirring chamber; 144-lower stirring chamber;

[0062] 191-rotating shaft; 192-stirring paddle; 193-opening; 194-extrusion tube; 195-extrusion paddle; 196-sealing sleeve;

[0063] 201-columnar housing; 202-rotating seat; 203-driving unit; 204-filter chamber; 205-feeding port; 206-discharging port; 207-filter element body;

[0064] 21-inner tube body; 22-outer tube body; 23-shaft rod; 24-guide wing; 25-sealing plug body; 26-axial drive part; 27-spring;

[0065] 261 - sealing chamber; 262 - driving piston; 263 - upper chamber; 264 - lower chamber; 265 - first pipe; 266 - second pipe;

[0066] 51-horizontal section; 52-inclined section;

[0067] 91-valve stem; 92-driving unit;

[0068] 121-first cavity; 122-second cavity; 123-feed adapter; 124-discharge adapter;

[0069] 28-assembly hole; 29-cleaning agent tank; 30-component A stirring tank; 31-component B stirring tank; 32-cross plate; 33-vacuum pump; 34-lifting assembly; 35-return port; 36-gear pump body; 37-reducer; 38-servo motor; 39-coupling. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] like Figures 1 to 9 As shown, the present invention provides a two-component HP-RTM device, comprising:

[0072] The equipment installation frame 13 has three assembly holes 28, and the three assembly holes 28 are used to install a cleaning agent tank 29, an A component stirring tank 30, and a B component stirring tank 31 respectively;

[0073] A horizontal plate 32 is arranged at the bottom of the equipment installation frame 13. Two metering pumping assemblies and two vacuum pumps 33 are arranged on the horizontal plate 32. The two vacuum pumps 33 are respectively connected to the top inlet ends of the A component stirring tank body 30 and the B component stirring tank body 31 through pipelines. The two metering pumping assemblies 15 are respectively connected to the bottom outlet ends of the A component stirring tank body 30 and the B component stirring tank body 31 through pipelines.

[0074] A lifting assembly 34 is provided on one side of the equipment installation frame 13. The action end of the lifting assembly 34 is connected to a mixing glue injection head. The lifting assembly 34 is used to adjust the vertical position of the mixing glue injection head.

[0075] The mixing and injection head has two feed ports 6, two return ports 35 and one discharge port 3. The two feed ports 6 are connected to two metering pumping components 15 through pipelines; the two return ports 35 are connected to the A component stirring tank body 30 and the B component stirring tank body 31 through pipelines.

[0076] A control valve is provided in the mixing and injection head, and the control valve is used to close the discharge port 3 and connect the feed port 6 and the return port 35 , or to close the return port 35 and connect the feed port 6 and the discharge port 3 .

[0077] The outer surfaces of the A component stirring tank body 30 and the B component stirring tank body 31 are both provided with a silicone heating belt.

[0078] The metering pumping assembly includes a gear pump body 36 , a reducer 37 and a servo motor 38 . The reducer 37 is connected to the rotating shaft of the driving gear of the gear pump body 36 via a coupling, and the servo motor 38 is connected to the reducer 37 .

[0079] The A component stirring tank body 30 and the B component stirring tank body 31 in this embodiment are identical in overall structure, and both include a stirring tank 14. The bottom of the stirring tank 14 is connected to a metering pumping assembly 15 via a pipeline, and the output end of the metering pumping assembly 15 is connected to an inlet end 16 of a glue injection head body 1. The glue injection head body 1 is provided with an outlet end 17 and a discharge port 3 connected to the inlet end 16, and the outlet end is connected to the top of the stirring tank 14 via a pipeline, and the stirring tank 14 is connected to a supply barrel 18 via a pipeline.

[0080] Among them, a first control valve 9 is arranged in the injection head body 1, and the first control valve 9 is used to control the connection between the outlet end or the discharge port 3 and the inlet end 16, and when the outlet end is connected to the inlet end 16, the material is circulated between the stirring tank 14 and the injection head body 1 through the transportation of the metering pumping component 15.

[0081] The glue circulation system provided in this embodiment can circulate the glue in the glue injection head and the stirring tank when the two-component HP-RTM system is not injecting glue, thereby preventing the glue from solidifying and settling when the glue injection is not in progress. When the glue injection is in progress, it is only necessary to open the first control valve 9 to quickly discharge the material from the discharge port 3. Overall, the consumption of the glue is small, and no solidification and precipitation will occur.

[0082] To this end, this embodiment provides a specific embodiment of a stirring tank, the purpose of which is to separate the rubber stored in the stirring tank 14 from the circulating rubber, so that the rubber circulating into the stirring tank 14 is first fully stirred and mixed before entering the stored rubber, so as to avoid the occurrence of rubber solidification:

[0083] It includes a tank body 141, in which a funnel 142 is arranged. The upper part of the funnel 142 and the inner wall of the tank body 141 form an upper stirring chamber 143, and the lower part of the funnel 142 and the inner wall of the tank body 141 form a lower stirring chamber 144. The funnel 142 connects the upper stirring chamber 143 with the lower stirring chamber 144.

[0084] The outlet ends of the feed barrel 18 and the glue injection head body 1 are connected to the upper stirring chamber 143 through a pipeline.

[0085] An agitator 19 is disposed in the stirring tank 14 . The agitator 19 includes a rotating shaft 191 disposed on the axis of the stirring tank 14 . A stirring paddle 192 is disposed on the shaft of the rotating shaft 191 located in the upper stirring chamber 143 and the lower stirring chamber 144 .

[0086] Among them, an opening 193 is set in the middle of the funnel 142, an extrusion tube 194 is set at the bottom of the opening 193, and an extrusion paddle 195 is set on the tube body of the extrusion tube 194 located on the rotating shaft 191. The material in the upper stirring chamber 143 enters the extrusion tube 194 and enters the lower stirring chamber 144 under the extrusion of the extrusion paddle 195.

[0087] The funnel piece 142 is connected to the inner wall of the tank body 141 through a sealing sleeve 196 . The funnel piece 142 is connected to a lifting drive device, which is used to drive the funnel piece 142 to rise and fall according to the pressure in the tank body 141 .

[0088] A filter device 20 is provided on the pipeline between the stirring tank 14 and the metering pumping assembly 15. The filter device 20 includes a columnar shell 201. A rotating seat 202 is provided inside the columnar shell 201. A driving part 203 is provided on the columnar shell 201. The driving part 203 is used to drive the rotating seat 202 to rotate.

[0089] There are multiple filter cavities 204 in a circular array on the rotating seat 202, and a filter body is arranged in the filter cavity 204. A feed port 205 is arranged on one end surface of the columnar shell 201, and a discharge port 206 is arranged on the other end, and the feed port 205 and the discharge port 206 are coaxial.

[0090] The driving unit 203 drives the rotating seat 202 to rotate, so that one end of the filter cavity 204 is aligned with the feed port 205 , and the other end of the filter cavity 204 is aligned with the discharge port 206 .

[0091] In the above technical solution, regarding the circulation form of the rubber, it is impossible to keep the rubber in the rubber injection head in a complete circulation state when switching the injection and circulation states of the rubber injection head body, that is, the material body in the discharge port 3 will still be in a state of stopped flow and solidification will occur.

[0092] To this end, the present embodiment provides a specific embodiment of a self-cleaning glue injection head for a two-component HP-RTM glue circulation system, the purpose of which is that when the glue injection head body 1 is switched to the glue circulation state, the residual glue in the injection port 3 is cleaned and discharged by a self-cleaning method, thereby keeping the discharge port 3 clean and free of glue residue.

[0093] Therefore, in this embodiment, an injection head 2 is arranged at the bottom of the injection head body 1, and a discharge port 3 is formed at the end of the injection head 2 away from the injection head body 1. Two material cavities 4 are arranged inside the injection head body 1, and the two material cavities 4 are connected to the injection head 2 through an internal pipe 5 and are connected to the discharge port 3.

[0094] In the inner wall of the glue injection head body 1 corresponding to each material cavity 4, a material feed port 6 connected to the material cavity 4, a cleaning agent injection channel 7 and a compressed air injection channel 8 are arranged.

[0095] A first control valve 9 is provided on the glue injection head body 1 corresponding to the feed port 6 , and is used to control the material in the feed port 6 to enter the material cavity 4 .

[0096] A second control valve 10 is provided on the head glue injection body 1 corresponding to the cleaning agent injection channel 7 , and is used to control the cleaning liquid in the cleaning agent injection channel 7 to enter the material cavity 4 .

[0097] A third control valve 11 is provided on the head glue injection body 1 corresponding to the compressed air injection channel 8 , and is used to control the compressed air in the compressed air injection channel 8 to enter the material cavity 4 .

[0098] Among them, by closing the first control valve 9 and opening the second control valve 10 and the third control valve 11 in sequence, the cleaning liquid in the cleaning agent injection channel 7 and the compressed air in the compressed air injection channel 8 enter the material cavity 4 and are discharged through the discharge port 3.

[0099] To this end, in the present embodiment, a self-cleaning glue injection head is provided. Specifically, after the glue injection head body 1 and the main material head 2 complete the glue injection action, the first control valve 9 closes the feed port 6, the third control valve 11 closes the compressed air injection channel 8, and the second control valve 10 opens the cleaning agent injection channel 7, specifically DOP environmentally friendly cleaning agent, which then enters the inner channel 5 and is sprayed out through the injection head 2.

[0100] Then the second control valve 10 closes the cleaning agent injection channel 7, and then the third control valve 11 opens the compressed air injection channel 8. The compressed air enters the material cavity 4, and the DOP cleaning agent and resin and curing agent residues in the material cavity 4 are discharged through the injection head 2. The third control valve 11 closes the compressed air injection channel 8, and the second control valve 10 closes the cleaning agent injection channel 7, thereby realizing the self-cleaning of the injection head body 1 and the pipeline in the injection head 2.

[0101] In this embodiment, the cleaning agent injection channel 7 and the compressed air injection channel 8 are connected to an external cleaning agent supply device and a compressed air supply source via a quick-release joint.

[0102] The feed port 6 is connected to the supply device of the resin or curing agent through a quick-release joint.

[0103] Of course, the glue injection head body 1 provided in this embodiment also includes realizing material circulation of the resin and the curing agent when the glue injection action is not performed, so as to avoid the solidification of the material in the glue injection head body 1.

[0104] For this purpose, the feed port 6 is located on the surface of the head injection body 1 and is threadedly connected to the feed seat 12. The feed seat 12 is provided with a first cavity 121 and a second cavity 122 from bottom to top. The first cavity 121 is connected to the material cavity 4. The first cavity 121 is provided with a feed adapter 123 on the injection head body 1 corresponding to the first cavity 121, and the second cavity 122 is provided with a discharge adapter 124 on the injection head body 1. The feed adapter 123 and the discharge adapter 124 are connected to an external material feeding device.

[0105] A first control valve 9 is provided on the top of the feed seat 12 , and the first control valve 9 is used to control the connection between the first cavity 121 and the material cavity 4 . At this time, the glue injection head body 1 is in the glue injection action, and the material (resin or curing agent) enters the material cavity 4 through the first cavity 121 .

[0106] The connection between the first cavity 121 and the second cavity 122 is controlled. At this time, the glue injection head body 1 is in a glue circulation state, that is, the material enters the first cavity 121 through the feed adapter 123 and then enters the second cavity 122 and then turns out through the discharge adapter 124.

[0107] In order to make the working principle of the first control valve 9 more clear, the first control valve 9 in this embodiment has a valve stem 91 and a driving part 92 , and the valve stem 91 passes through the second cavity 122 and the first cavity 121 to enter the material cavity 4 .

[0108] To further illustrate, the valve stem 91 in this embodiment is intended to facilitate the communication between the first cavity 121 and the second cavity 122, or the communication between the first cavity 121 and the material cavity 4. Its specific structure includes a first rod segment, a second rod segment and an end connected in sequence. The diameter of the second rod segment is smaller than that of the first rod segment, and the diameter of the end segment is larger than that of the first rod segment. Figure 2 Shown from top to bottom.

[0109] At the same time, the diameter of the end head is larger than the caliber of the connection between the first cavity 121 and the material cavity 4, and the diameter of the second rod segment is smaller than the caliber of the connection between the first cavity 121 and the material cavity 4. When the end head enters the interior of the material cavity 4, the first rod segment closes the connection between the first cavity 121 and the second cavity 122, and the opening connecting the first cavity 121 and the material cavity 4 is located in the middle of the second rod segment.

[0110] When the end head is inserted into or closes the opening communicating between the first cavity 121 and the material cavity 4 , the second rod section is located at the opening communicating between the first cavity 121 and the second cavity 122 .

[0111] The driving part 92 drives the valve stem 91 to move upward to the end of the valve stem 91 to close the connection between the first cavity 121 and the material cavity 4 , thereby closing the connection between the first cavity 121 and the material cavity 4 .

[0112] Furthermore, the first control valve 9 , the second control valve 10 and the third control valve 11 have the same overall structure, and all adopt a hydraulically driven valve body structure to realize the opening and closing of the feed port 6 , the cleaning agent injection channel 7 and the compressed air injection channel 8 .

[0113] The driving part 92 drives the valve stem 91 to move downward until the end of the valve stem 91 enters the material cavity 4 , and the first cavity 121 is connected with the material cavity 4 ; the rod body of the valve stem 91 closes the connection between the first cavity 121 and the second cavity 122 .

[0114] Furthermore, the inner pipe 5 in this embodiment includes a horizontal section 51 and an inclined section 52 , one end of the horizontal section 51 is connected to the material cavity 4 , the other end of the horizontal section 51 is connected to the inclined section 52 , and the end of the inclined section 52 away from the horizontal section 51 is connected to the injection head 2 .

[0115] With the connection between the inclined section 52 and the injection head 2 as the center, the multiple inclined sections 52 are evenly distributed on the top circumferential position of the column head 2. Furthermore, two adjacent inclined sections 52 are in a "V" shape. When the inclined section 52 enters the injection head 2, the discharge of the multiple inclined sections 52 is toward the axis of the injection head 2. Therefore, the discharge of the multiple inclined sections 52 collides at the axis position of the injection head 2, thereby enabling better mixing without affecting the mixing and discharge efficiency of the injection head 2.

[0116] In this embodiment, in order to ensure the uniformity of mixing of the two material cavities 4 (components A and B) entering the injection head 2, each material cavity 4 is connected to the injection head 2 via two inner pipes 5. The connection points of the four inner pipes 5 and the injection head 2 are evenly distributed along the circumference of the injection head 2, so that the components A and B entering the injection head 2 can be mixed evenly.

[0117] Of course, in this embodiment, the injection head 2 is assumed to be a straight pipe structure, and it is found that as the number of inner pipes 5 increases, the axial length of the injection head 2 needs to be increased to meet the uniform mixing degree of the A and B component rubbers, but there is an upper limit to the length.

[0118] like Figures 10 to 13 The simulation of the working state of the injection head 2 with two symmetrically distributed inner pipes 5 is shown. The flow channel diameter of the injection head 2 is selected: under the premise of using the regulating valve to control the flow rate unchanged, changing the flow channel diameter can change the flow rate and pressure. The flow channel diameter is selected according to one's own needs. The inner pipe and the pipe diameter of the injection head 2 in this article are consistent, and the diameter is 3mm;

[0119] Among them, the factors affecting flow channel design are:

[0120] Under the premise that the size of the injection head body does not change, the body is simplified. The structure of the flow channel is affected by three factors: X, Y, and θ. X represents the length of the horizontal section 51, Y represents the axial length of the injection head 2, and θ represents the angle between the horizontal section 51 and the inclined section 52.

[0121] The single factor analysis of the three factors was carried out to obtain the influence of the three factors on the mixing uniformity, such as Fig.10 and Fig.11 shown.

[0122] The floating degree represents the maximum value minus the minimum value of the volume fraction of component B at the outlet section. The smaller the floating degree, the better the mixing uniformity, and vice versa. The Y factor has the greatest impact on mixing uniformity. The specific value is as follows: Fig.10 and Fig.11 shown.

[0123] As a result, when the floating degree between the maximum value and the minimum value of the mixing uniformity of the material body tends to be stable, the preferred length range of the injection head 2 is 35 to 45 mm.

[0124] As Y increases from 5mm to 45mm, the mixing uniformity becomes better and better, but the larger the Y, the larger the injection head will be, which will cause great inconvenience. Therefore, under the premise of keeping the length at 45mm unchanged, we considered optimizing the flow channel structure and improving the mixing uniformity.

[0125] Although increasing the axial length of the injection head 2 can improve the mixing degree of the A and B component rubber materials, it also increases the volume of the structure and is likely to affect the outlet pressure of the injection head 2.

[0126] Therefore, a spiral pipe structure is proposed. The flow channel diameter of the spiral pipe structure is still 3mm, and the variables are the number of spiral turns and the pitch, such as Fig.11 shown.

[0127] The injection head 2 in this embodiment can be configured as a spiral pipe structure, and the pitch range of the spiral pipe structure is 9.17 to 13.75 mm.

[0128] like Fig.12 As shown, the use of a spiral structure will improve the mixing uniformity of the rubber material. Within the limitations of the pipe diameter of the spiral pipe structure and the preferred length range of the injection head 2, when the pitch is 13.75 mm and 3 turns, the optimal mixing uniformity can be achieved and the outlet pressure of the injection head 2 does not change much.

[0129] This embodiment mainly focuses on the mixing and conveying of component A and B materials, namely resin and curing agent, and provides a specific embodiment of an injection head 2, the purpose of which is to avoid the adhesion of the material inside the injection head 2 and to easily form a solidified sticky film on the inner wall surface of the injection head 2. Before the above-mentioned cleaning process using high-pressure gas, the adhesive film that tends to solidify and adheres to the inner wall of the injection head 2 can be removed.

[0130] To this end, the injection head 2 includes an inner tube body 21 and an outer tube body 22 mounted on the inner tube body 21, wherein the outer tube body 22 and the inner tube body 21 at least partially protrude from the top of the outer tube body 22, and an axially arranged shaft rod 23 is arranged inside the inner tube body 21, and the shaft rod 23 extends to the end surface of the inner bottom of the outer tube body 22, and a plurality of guide wings 24 are evenly arranged circumferentially, and the other ends of the plurality of guide wings 24 are connected to the inner wall of the outer tube body 22.

[0131] An axial drive portion 26 connected to the top of the shaft 23 is disposed inside the glue injection head body 1 . The axial drive portion 26 is used to drive the shaft 23 to move up and down along the axial direction of the shaft 23 , thereby driving the outer tube 22 to move up and down relative to the inner tube 21 .

[0132] Of course, before cleaning the material chamber 4, we can close the connection between the injection head 2 and the inner pipe 5. That is, we hope to close the connection between the inner pipe 5 and the injection head 2 before injecting the cleaning agent and compressed air into the cleaning agent injection channel 6 and the compressed air injection channel 7, and use the state of the cleaning agent and compressed air instantly entering the material chamber 4 to impact the inside of the material chamber 4, thereby achieving flushing.

[0133] Therefore, the inner pipe 5 needs to be connected to the circumferential side wall of the inner tube body 21 near the top; the top of the inner tube body 21 is open, and a sealing plug body 25 is installed, and the sealing plug body 25 is fixedly sleeved on the shaft 23. The shaft 23 drives the sealing plug body 25 to move downward until the connection between the inner pipe 5 and the inner tube body 21 is closed.

[0134] This process also includes adjusting the opening size of the inner pipe 5 entering the injection head 2 during the axial displacement of the sealing plug body 25, which is essentially aimed at adjusting the flow size of the A and B components of the inner pipe 5 entering the injection head 2.

[0135] In this embodiment, a mounting hole for axial movement of the sealing plug body 25 and cooperating with the sealing plug body 25 is provided on the inner wall of the injection head body 1 located directly above the inner tube body 21, that is, a guide hole that provides a travel for the axial displacement of the sealing plug body 25.

[0136] Of course, in this embodiment, the inner channel 5 can also be closed by the sealing plug 25, and after the mixed rubber provided by the injection head 2 is injected into the mold once, the outer tube 22 is driven by the axial drive part 26 to move downward (the injection head body 1 needs to cooperate with the action) and separate from the feed port of the mold, so that the mixed rubber in the inner tube 21 separates from the rubber in the feed port. The rubber will not overflow the discharge port 3 (the bottom of the outer tube 22 forms the discharge port 3).

[0137] While the outer tube body 22 moves upward relative to the inner tube body 21 , the inner tube body 21 scrapes off the mixed rubber material remaining on the inner wall of the outer tube body 22 .

[0138] Then the diameter of the bottom of the inner tube body 21 gradually increases along the axial direction of the inner tube body 21 until it is the same as the outer diameter of the inner tube body 21, that is, a trumpet-shaped opening is formed in the bottom of the inner tube body 21, so that the bottom opening of the inner tube body 21 can fully contact the inner wall of the outer tube body 22 and clean the inner wall of the outer tube body 22.

[0139] During the cleaning process of the high-pressure gas and the cleaning agent, they will be flushed out together, which can avoid the situation that the existing injection head 2 is still adhered and blocked due to the solidified material film remaining on the inner wall surface of the injection head 2 after cleaning.

[0140] Furthermore, since the A and B components enter the mixing process only after entering the injection head 2, the uniformity of the mixing also affects the final product molding.

[0141] To this end, when the mixing state of the material injected into the mold is not ideal, the mixing and conveying length of the A and B components in the injection head 2 can be extended by increasing the relative length between the inner tube 21 and the outer tube 22 .

[0142] Since in this embodiment, it is necessary to use high-pressure gas to flush the material chamber 4, considering not introducing a new driving method and reducing the load and control of the driving unit of the injection head body 1, in this embodiment, high-pressure gas can be used as the driving source.

[0143] To this end, the axial driving part 26 includes a sealing chamber 261 arranged in the injection head body 1, and a driving piston 262 is arranged in the sealing chamber 261. The driving piston 262 is connected to the top of the shaft 23. The driving piston 262 divides the sealing chamber 261 into an upper chamber 263 and a lower chamber 264. The upper chamber 263 is connected to one of the two material chambers 4 through a first pipe 265, and the lower chamber 264 is connected to the other material chamber 4 through a second pipe 266.

[0144] The high-pressure gas alternately introduced into the two material chambers 4 allows the high-pressure gas to enter the upper chamber 263 through the first pipe 265 or enter the lower chamber 264 through the second pipe 266, thereby driving the shaft 23 to move up and down.

[0145] Air pressure regulating valves are provided on the first pipe 265 and the second pipe 266. Furthermore, in order to prevent the cleaning agent or rubber in the material chamber 4 from affecting the axial drive of the sealing chamber 261 on the shaft 23, or blocking the first channel 265 and the second channel 266, air pressure regulating valves are provided on the first channel 265 and the second channel 266.

[0146] The main function of the air pressure regulating valve is that when high-pressure gas is introduced into the material chamber 4 and the high-pressure gas reaches a set value, the air pressure regulating valve can be opened, and then the high-pressure gas in the material chamber 4 enters the upper cavity 263 or the lower cavity 264.

[0147] High-pressure gas is alternately introduced into the two material chambers 4, that is, the upper chamber 263 is pressurized and the lower chamber 264 is depressurized (or not pressurized), and the shaft rod 23 is displaced downward along its axial direction, or the upper chamber 263 is depressurized (or not pressurized) and the lower chamber 264 is pressurized, and the shaft rod 23 is displaced upward along its axial direction.

[0148] Of course, the opening and closing of the air pressure regulating valve can also be actively controlled, and the air pressure regulating valve can be an electromagnetic valve structure.

[0149] The purpose is to close the connection between the first channel 265 or the second channel 266 and the material chamber 4 through the air pressure regulating valve after the displacement of the above-mentioned central shaft rod 23 occurs, thereby maintaining the relative position of the shaft rod 23 after axial movement, that is, controlling the relative position between the inner tube body 21 and the outer tube body 22, or the sealing plug body 25 closes the connection between the inner pipe 5 and the inner tube body 21.

[0150] This requires that the axial length of the sealing plug body 25 be set to be included in the axial displacement stroke of the shaft 23, that is, during the axial downward displacement of the sealing plug body 25, there is a stroke range in which the inner pipe 5 and the inner tube body 21 can maintain a connected state.

[0151] In this embodiment, in order to maintain the stability of the connection between the structure of the outer tube body 22 itself and the injection head body 1, as well as the stability of the displacement of the outer tube body 22, a spring 27 is mounted on the outer wall of the outer tube body 22, the top of the spring 27 is fixedly connected to the injection head body 1, and the bottom of the spring 27 is fixedly connected to the outer wall of the outer tube body 22. The spring 27 is used to fix the outer tube body 22 and maintain the stability of the outer tube body 22 during axial displacement relative to the inner tube body 21.

[0152] It should be supplemented that the driving part 92 in the present invention is specifically a hydraulic cylinder or a pneumatic cylinder.

[0153] Furthermore, this embodiment provides a method for building a two-component HP-RTM device, which is used for connecting and building a general two-component HP-RTM device, and includes the following specific steps:

[0154] Step 100, determining component modules according to the implementation requirements of the two-component HP-RTM equipment, specifically including a stirring module, a metering module and a mixing module;

[0155] The stirring module includes a stirring tank for component A and a stirring tank for component B;

[0156] The metering module includes a gear pump or a plunger pump, a reducer and a servo motor;

[0157] The mixing module includes a mixing and dispensing head;

[0158] Step 200, selecting each stirring module, metering module and mixing module, specifically includes:

[0159] According to the stirring tank volume of the stirring tank of component A and component B and the physicochemical property parameters of the corresponding components, the agitator is determined, and a three-dimensional model is built for the agitator. The obtained model is divided into a static domain and a dynamic domain in the tank, and the rotation speed is determined based on the stirring experience of the components; the flow state of the components is determined according to the Reynolds number, and the relevant model is selected for calculation; quantitative and qualitative analysis is performed by setting monitoring points and cloud maps in the model; and the influence degree of the influencing factors is ranked through orthogonal experiments, and the model is reconstructed for verification, and the selection of the stirring tank of component A and component B is completed;

[0160] Determine the flow rate of the component delivery of the equipment according to the injection volume of the mold, and select the gear pump or plunger pump as the component delivery power source in the metering module; determine the reducer and servo motor according to the load of the equipment; convert the servo motor speed according to the flow rate and pressure of the equipment, and allocate the corresponding flow rate of the metering module of the A component mixing tank and the B component mixing tank under different ratios and the same pressure, so that the components in the A component mixing tank and the B component mixing tank can be delivered according to the set ratio;

[0161] According to the mixing of the components of the A component stirring tank and the B component stirring tank and the control valve based on the hydraulic control form, the connection state of the feed port, the return port and the discharge port is controlled, and the mixing injection head of the mixing module and the flow channel inside the mixing injection head connecting the feed port, the return port and the discharge port are designed;

[0162] Step 300: Establish connections between modules of the device according to the flow direction of components in the device.

[0163] When the injection pressure of the mixed injection head to the mold is less than 3Mpa, a gear pump is used as the power source for delivering the components in the metering module; when the injection pressure is greater than 3Mpa, a plunger pump is used as the power source for delivering the components in the metering module.

[0164] The purpose of the gear pump and plunger pump is to provide pressure; the reducer is selected according to the motor and pump to ensure normal rotation under the operating load; the servo motor uses a variable frequency motor, which is connected to a frequency converter to achieve speed regulation, thereby achieving the purpose of changing the flow rate.

[0165] The left side of the gear pump is connected to the pipeline below the mixing tank, the components enter from the left side, and the booster output is on the right side; the gear pump is connected to the reducer through a coupling; the reducer is connected to the variable frequency motor through a coupling; the variable frequency motor is connected to the power supply, and the metering modules and principles of components A and B are the same.

[0166] The mixing module also includes a high-pressure counter-pressure mixing injection head. The mixing injection head has A and B component access ports, A and B component return ports, hydraulic oil inlet and outlet (hydraulic oil inlet and outlet of the first control valve, the second control valve and the third control valve), cleaning agent interface, etc. The internal flow channel is designed as a counter-pressure flow channel.

[0167] Among them, the hydraulic oil mainly realizes the movement of the piston in the control valve, that is, it can control whether components A and B are mixed or circulated; the inlet ports of components A and B are connected to the right outlet of the gear pump / plunger pump through pipelines respectively; the reflux ports of components A and B are connected to the reflux port of the mixing tank through pipelines respectively.

[0168] The lifting component connected to the mixing and injecting head is lifted and lowered by a hand-cranked lead screw.

[0169] The design method of the mixing tank is mainly based on various parameters such as the volume of the mixing tank and the viscosity of the fast-curing resin. A folding blade turbine agitator is selected, which has the characteristics of axial and radial flow, which is more conducive to uniform mixing and heat transfer.

[0170] According to the Manual for the Design and Selection of Stirring and Mixing Equipment, the dimensions of the agitator are designed. Then, the agitator is modeled in 3D using 3D modeling software, including the agitator, agitator shaft, and a material tank. The static and dynamic domains of the fluid are divided, and the walls of the agitator are defined. Based on the experience of domestic injection molding machines in mixing resins, the speed is determined and the relevant boundary conditions are set. The flow state is determined based on the Reynolds number, and the relevant model is selected for calculation. Quantitative and qualitative analysis is performed by setting monitoring points and cloud maps. Then, the degree of influence of the influencing factors is ranked through orthogonal experiments, and the model is reconstructed for verification, and the design is completed.

[0171] The only pressure source for the components in the system is the pump, so first determine the flow and pressure range of the equipment, and select the gear pump / plunger pump based on this range.

[0172] Then determine the reducer and servo motor (variable frequency motor) according to the load and working conditions. If the resin viscosity is low, you can consider omitting the reducer and directly connect the pump with a variable frequency motor.

[0173] The inverter selection is based on the motor power and load size. For example, if the motor is 5.5Kw, the inverter power should be ≥5.5Kw. If overload often occurs in the working condition, the inverter power should be as large as possible. After the above parts are selected, they can be connected through couplings to form a metering device.

[0174] The speed is converted according to the flow rate and pressure of the equipment, so that the flow rate can be automatically distributed under different ratios and the same pressure, so that components A and B can be transported to the mixing injection head for mixing according to the set ratio.

[0175] There are many lifting components, such as gear transmission lifting, hydraulic lifting, transmission wheel lifting, etc., which can be selected according to the equipment requirements. Taking this patent as an example, the method of screw lifting is adopted. First, the weight of the injection head is not large, so the lifting mechanism does not need a large load-bearing capacity, which can be met by the screw transmission; second, there are some requirements for the lifting distance accuracy, which can be met by the screw transmission with good accuracy; third, the structure is simple, which can be met by the screw mechanism. Therefore, it is necessary to determine which lifting transmission mechanism to use according to different working conditions.

[0176] The device operation process provided in this embodiment is as follows:

[0177] Startup: After starting the equipment, the inverter operates, the servo motor rotates, and the gear pump rotates. At this time, the control valve is used to close the discharge port 3, connect the feed port 6 and the return port 35, and components A and B circulate in their respective flow channels and the stirring tank.

[0178] Heating: The tank body silicone heating belt (the resistance wire is coated with a silicone material layer to form a tank body structure that matches the stirring tank) starts to heat up. The two can adjust the temperature separately to reduce the temperature gradient inside and outside the tank.

[0179] Glue injection: When the mold and the tank are heated to the specified temperature, the solenoid valve switch is controlled through the human-machine interface, the piston in the glue injection head is offset, and the channel is opened, that is, the return port 35 is closed through the control valve, and the feed port 6 and the discharge port 3 are connected (for components A and B entering the mixed glue injection head), and components A and B collide and mix, and then are ejected by high pressure.

[0180] Cleaning: After the injection is completed, the channel connected to the cleaning agent is opened, and the channels of components A and B are closed for cleaning, and then blown out from the discharge port with compressed air.

[0181] Reset: The cleaning agent channel is closed, the channel is closed, that is, the control valve is used to close the discharge port 3, connect the feed port 6 and the return port 35, and components A and B continue to circulate.

[0182] The present invention proposes a method for building a HP-RTM device and a device connection method, including structural optimization from mixing tank design to simulation, selection considerations of a metering system, design criteria for a glue injection head and a simulation process. The device is built according to the component flow direction. The building method can divide complex equipment into several subsystems, which is helpful for the research and development of HP-RTM equipment.

[0183] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A two-component HP-RTM device, characterized in that: include: An equipment installation frame (13), wherein three assembly holes (28) are provided on the equipment installation frame (13), and the three assembly holes (28) are used to install a cleaning agent tank body (29), an A component stirring tank body (30), and a B component stirring tank body (31), respectively; A horizontal plate (32) is arranged at the bottom of the equipment installation frame (13), and two metering pumping assemblies and two vacuum pumps (33) are arranged on the horizontal plate (32), and the two vacuum pumps (33) are respectively connected to the top inlet ends of the A component stirring tank body (30) and the B component stirring tank body (31) through pipelines, and the two metering pumping assemblies (15) are respectively connected to the bottom outlet ends of the A component stirring tank body (30) and the B component stirring tank body (31) through pipelines; A lifting component (34) is arranged on one side of the equipment installation frame (13), the action end of the lifting component (34) is connected to a mixing glue injection head, and the lifting component (34) is used to adjust the vertical position of the mixing glue injection head; The mixing and injection head has two feed ports (6), two return ports (35) and one discharge port (3), the two feed ports (6) are respectively connected to the two metering pumping components (15) through pipelines; the two return ports (35) are respectively connected to the A component stirring tank body (30) and the B component stirring tank body (31) through pipelines; A control valve is provided in the mixing and injection head, and the control valve is used to close the discharge port (3) and connect the feed port (6) and the return port (35), or to close the return port (35) and connect the feed port (6) and the discharge port (3).

2. A two-component HP-RTM device according to claim 3, characterized in that: The outer surfaces of the A component stirring tank body (30) and the B component stirring tank body (31) are both provided with silica gel heating belts.

3. A two-component HP-RTM device according to claim 3, characterized in that: The metering pumping assembly comprises a gear pump body (36), a reducer (37) and a servo motor (38); the reducer (37) is connected to the rotating shaft of the driving gear of the gear pump body (36) via a coupling, and the servo motor (38) is connected to the reducer (37).

4. A two-component HP-RTM device according to claim 3, characterized in that: The mixing glue injection head comprises a glue injection head body (1), a material injection head (2) is arranged at the bottom of the glue injection head body (1), an end of the material injection head (2) away from the glue injection head body (1) forms a discharge port (3), and two material cavities (4) are arranged inside the glue injection head body (1), and the two material cavities (4) are connected to the material injection head (2) through an inner pipe (5) and communicate with the discharge port (3); A feed inlet (6) and a return inlet (35) communicating with the material cavity (4) are provided in the inner wall of the glue injection head body (1) corresponding to each material cavity (4); The control valve comprises a first control valve (9) provided on the glue injection head body (1) corresponding to the feed port (6), and used for controlling the material in the feed port (6) to enter the material cavity (4).

5. A two-component HP-RTM device according to claim 4, characterized in that: A cleaning agent injection channel (7) and a compressed air injection channel (8) communicating with the material cavity (4) are provided in the inner wall of the glue injection head body (1) corresponding to each material cavity (4); the cleaning agent injection channel (7) is connected to the cleaning agent tank (29) via a pipeline; The control valve further comprises a second control valve (10) provided on the head glue injection body (1) corresponding to the cleaning agent injection channel (7), and a third control valve (11) provided on the head glue injection body (1) corresponding to the compressed air injection channel (8); The second control valve (10) is used to control the cleaning liquid in the cleaning agent injection channel (7) to enter the material cavity (4); The third control valve (11) is used to control the compressed air in the compressed air injection channel (8) to enter the material chamber (4); By closing the first control valve (9), and opening the second control valve (10) and the third control valve (11) in sequence, the cleaning liquid in the cleaning agent injection channel (7) and the compressed air in the compressed air injection channel (8) enter the material chamber (4) and are discharged through the discharge port (3).

6. A two-component HP-RTM device according to claim 4, characterized in that: The feed port (6) is located at an opening on the surface of the head glue injection body (1) and is threadedly connected to a feed seat (12); a first cavity (121) and a second cavity (122) are arranged in the feed seat (12) from bottom to top; the first cavity (121) is connected to the material cavity (4); a feed adapter (123) is arranged on the glue injection head body (1) corresponding to the first cavity (121); and a discharge adapter (124) is arranged on the glue injection head body (1) corresponding to the second cavity (122); The first control valve (9) is arranged on the top of the feed seat (12), and the first control valve (9) is used to control the communication between the first cavity (121) and the material cavity (4), or to control the communication between the first cavity (121) and the second cavity (122); The first control valve (9) comprises a valve stem (91) and a driving part (92), and the valve stem (91) passes through the second cavity (122) and the first cavity (121) to enter the material cavity (4); The driving unit (92) drives the valve stem (91) to move upward to the end of the valve stem (91) to close the connection between the first cavity (121) and the material cavity (4), thereby closing the connection between the first cavity (121) and the material cavity (4); Or the driving part (92) drives the valve stem (91) to move downward until the end of the valve stem (91) enters the material cavity (4), and the first cavity (121) is connected to the material cavity (4); the stem body of the valve stem (91) closes the connection between the first cavity (121) and the second cavity (122).

7. A two-component HP-RTM device according to claim 2, characterized in that: The injection head (2) comprises an inner tube body (21) and an outer tube body (22) sleeved on the inner tube body (21), wherein the inner tube body (22) has at least a portion of the inner tube body (21) protruding from the top of the outer tube body (22), and an axial shaft (23) is axially arranged inside the inner tube body (21), and a plurality of guide wings (24) are evenly arranged circumferentially on the end surface of the end portion of the inner bottom of the outer tube body (22), and the other ends of the plurality of guide wings (24) are connected to the inner wall of the outer tube body (22); An axial drive portion (26) connected to the top of the shaft (23) is arranged inside the injection head body (1), and the axial drive portion (26) is used to drive the shaft (23) to move up and down along the axial direction of the shaft (23), thereby driving the outer tube body (22) to move up and down relative to the inner tube body (21).

8. A two-component HP-RTM equipment and construction method according to claim 7, characterized in that: The axial drive portion (26) comprises a sealed cavity (261) arranged in the injection head body (1), a driving piston (262) is arranged in the sealed cavity (261), the driving piston (262) is connected to the top of the shaft (23), the driving piston (262) divides the sealed cavity (261) into an upper cavity (263) and a lower cavity (264), the upper cavity (263) is connected to one of the two material cavities (4) through a first pipe (265), and the lower cavity (264) is connected to the other of the two material cavities (4) through a second pipe (266); The high-pressure gas alternately introduced into the two material chambers (4) allows the high-pressure gas to enter the upper chamber (263) through the first pipe (265) or enter the lower chamber (264) through the second pipe (266), thereby driving the shaft (23) to move up and down.

9. A method for constructing a two-component HP-RTM device, characterized in that: The specific steps include: Step 100, determining component modules according to the implementation requirements of the two-component HP-RTM equipment, specifically including a stirring module, a metering module and a mixing module; The stirring module includes a stirring tank for component A and a stirring tank for component B; The metering module includes a gear pump or a plunger pump, a reducer and a servo motor; The mixing module includes a mixing and dispensing head; Step 200, selecting each stirring module, metering module and mixing module, specifically includes: According to the stirring tank volume of the stirring tank of component A and component B and the physicochemical property parameters of the corresponding components, the agitator is determined, and a three-dimensional model is built for the agitator. The obtained model is divided into a static domain and a dynamic domain in the tank, and the rotation speed is determined based on the stirring experience of the components; the flow state of the components is determined according to the Reynolds number, and the relevant model is selected for calculation; quantitative and qualitative analysis is performed by setting monitoring points and cloud maps in the model; and the influence degree of the influencing factors is ranked through orthogonal experiments, and the model is reconstructed for verification, and the selection of the stirring tank of component A and component B is completed; Determine the flow rate of the component delivery of the equipment according to the injection volume of the mold, and select the gear pump or plunger pump as the component delivery power source in the metering module; determine the reducer and servo motor according to the load of the equipment; convert the servo motor speed according to the flow rate and pressure of the equipment, and allocate the corresponding flow rate of the metering module of the A component mixing tank and the B component mixing tank under different ratios and the same pressure, so that the components in the A component mixing tank and the B component mixing tank can be delivered according to the set ratio; According to the mixing of the components of the A component stirring tank and the B component stirring tank and the control valve based on the hydraulic control form, the connection state of the feed port, the return port and the discharge port is controlled, and the mixing injection head of the mixing module and the flow channel inside the mixing injection head connecting the feed port, the return port and the discharge port are designed; Step 300: Establish connections between modules of the device according to the flow direction of components in the device.

10. A method for constructing a two-component HP-RTM device according to claim 9, characterized in that: When the injection pressure of the mixed injection head to the mold is less than 3Mpa, a gear pump is used as the power source for delivering the components in the metering module; when the injection pressure is greater than 3Mpa, a plunger pump is used as the power source for delivering the components in the metering module.

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