Two-component HP-RTM equipment

Abstract

The utility model discloses two-component HP-RTM (high pressure-resin transfer molding) equipment which comprises an equipment mounting frame, and a cleaning agent tank body, an A component stirring tank body and a B component stirring tank body are respectively mounted in three assembly holes in the equipment frame; 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 utility model relates to two components HP-RTM glue injection technical field, concretely relates to a two components HP-RTM equipment. BACKGROUND

[0002] High pressure resin transfer molding process, shortly called HP-RTM molding process. It is a molding process that resin is injected into a vacuum sealed mold which is pre-laid with fiber reinforced materials and pre-embedded parts by using high pressure. The resin flows to fill the mold, impregnates, solidifies and demolds to obtain a composite product. HP-RTM molding process is applied to many fields such as aerospace and the development direction of fiber composites due to its characteristics of large batch, high quality, low cost and short cycle.

[0003] However, HP-RTM equipment is relatively complex, and there is no independent research system from equipment to process. At present, the aspect of building HP-RTM equipment as a whole lacks the completeness of HP-RTM equipment and the reference for building the whole complete equipment connection. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a two components HP-RTM equipment to solve the technical problem that in the prior art, the aspect of building HP-RTM equipment as a whole lacks the completeness of HP-RTM equipment and the reference for building the whole complete equipment connection.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A two components HP-RTM equipment, comprising:

[0007] An equipment mounting frame, three assembly holes are formed in the equipment mounting frame, and the three assembly holes are respectively used for mounting 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 mounting frame, two metering pump 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 pump 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 mounting frame, and the lifting assembly is connected to a mixing glue injection head at the action end, and the lifting assembly is used for adjusting the vertical position of the mixing glue injection head;

[0010] The mixed glue injection head has two feeding ports, two return ports and one discharging port, the two feeding ports are connected with the two metering pumping assemblies respectively through pipelines, and the two return ports are connected with the A-component stirring tank body and the B-component stirring tank body respectively through pipelines.

[0011] The control valve is arranged in the mixed glue injection head, and is used for closing the discharging port, connecting the feeding port and the return port, or closing the return port and connecting the feeding port and the discharging port.

[0012] As a preferred scheme of the utility model, the outer surfaces of the A-component stirring tank body and the B-component stirring tank body are both provided with silica gel heating belts.

[0013] As a preferred scheme of the utility model, the metering pumping assembly comprises a gear pump body, a speed reducer and a servo motor, the speed reducer is connected with the rotating shaft of the driving gear of the gear pump body through a shaft coupling, and the servo motor is connected with the speed reducer.

[0014] As a preferred scheme of the utility model, the mixed glue injection head comprises a glue injection head main body, the glue injection head main body is provided with a glue injection head at the bottom, the end of the glue injection head away from the glue injection head main body forms a discharging port, the inside of the glue injection head main body is provided with two material cavities, the two material cavities are both connected with the glue injection head through inner pipelines and are communicated with the discharging port;

[0015] The feeding port and the return port communicated with the material cavity are arranged in the inner wall of the glue injection head main body corresponding to each material cavity;

[0016] The control valve comprises a first control valve arranged on the glue injection head main body corresponding to the feeding port and used for controlling the material in the feeding port to enter the material cavity.

[0017] As a preferred scheme of the utility model, the cleaning agent injection channel and the compressed air injection channel communicated with the material cavity are arranged in the inner wall of the glue injection head main body corresponding to each material cavity, the cleaning agent injection channel is connected with the cleaning agent tank body through a pipeline;

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

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

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

[0021] Wherein, by closing the first control valve, sequentially opening the second control valve, the third control valve, so that the cleaning agent injection channel in the cleaning liquid, the compressed air injection channel in the compressed air into the material cavity, and through the discharge port.

[0022] As a preferred scheme of the utility model, the opening of the feed inlet on the surface of the glue injection head main body is threadedly connected with a feed seat, first and second cavities are arranged in the feed seat from bottom to top, the first cavity is connected with the material cavity, a feed adapter is arranged on the glue injection head main body corresponding to the first cavity, and a discharge adapter is arranged on the glue injection head main body corresponding to the second cavity.

[0023] A first control valve is arranged on the top of the feed seat, and the first control valve is used for controlling the communication between the first cavity and the material cavity or controlling the communication between the first cavity and the second cavity.

[0024] The first control valve has a valve rod and a driving part, and the valve rod passes through the second cavity and the first cavity and enters the material cavity.

[0025] Wherein, the driving part drives the upward movement of the valve rod to close the connection between the first cavity and the material cavity by the end of the valve rod, and the connection between the first cavity and the material cavity is closed.

[0026] Or the driving part drives the downward movement of the valve rod to enter the material cavity by the end of the valve rod, and the first cavity communicates with the material cavity; the rod body of the valve rod closes the communication between the first cavity and the second cavity.

[0027] The utility model has the following beneficial effects compared with the prior art:

[0028] The utility model provides a kind of HP-RTM equipment building method and equipment connection mode, including from the structure optimization of simulation of stirring tank design, the selection of metering system is considered, the design criterion and simulation process of glue injection head, it is built according to component flow direction, this building method can be divided into several subsystems by complex equipment, it is helpful to the research and development of HP-RTM equipment group. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other implementation drawings can be obtained without creative labor on the basis of the provided drawings.

[0030] Figure 1 The system overall structure schematic diagram of the embodiment of the utility model;

[0031] Figure 2 The stirring tank overall structure schematic diagram of the embodiment of the utility model;

[0032] Figure 3 The filter device structure schematic diagram of the embodiment of the utility model;

[0033] Figure 4 The glue injection head main body structure schematic diagram of the embodiment of the utility model;

[0034] Figure 5 The glue injection head main body cross section structure schematic diagram of the embodiment of the utility model;

[0035] Figure 6 The glue injection head main body part structure schematic diagram of the embodiment of the utility model;

[0036] Figure 7 The floating degree broken line graph of the component at different monitoring points arranged on the inner pipeline of the embodiment of the utility model;

[0037] Figure 8 The different glue injection head axial length result table and broken line graph of the embodiment of the utility model in the glue injection mixed simulation of two symmetrically distributed inner pipelines;

[0038] Figure 9 The glue injection mixed simulation data table of the embodiment of the utility model in the glue injection head being a spiral pipeline structure and two symmetrically distributed inner pipelines;

[0039] Figure 10 The structure schematic diagram of the glue injection head of the embodiment of the utility model in the spiral pipeline structure.

[0040] The numbers in the drawing respectively represent as follows:

[0041] 1-glue injection head main body, 2-glue injection head, 3-discharge port, 4-material cavity, 5-inner pipeline, 6-feeding port, 7-cleaning agent injection channel, 8-compressed air injection channel, 9-first control valve, 10-second control valve, 11-third control valve, 12-feeding seat, 13-equipment mounting frame, 14-stirring tank, 15-metering pump assembly, 16-inlet end, 17-outlet end, 18-feeding barrel, 19-stirrer, 20-filter device, 28-assembly hole, 29-cleaning agent tank body, 30-A component stirring tank body, 31-B component stirring tank body, 32-cross plate, 33-vacuum pump, 34-lifting assembly, 35-back material port, 36-gear pump body, 37-reducer, 38-servo motor, 39-coupling.

[0042] 51-horizontal section, 52-inclined section;

[0043] 91 - valve stem; 92 - drive portion;

[0044] 121 - first cavity; 122 - second cavity; 123 - feed adapter; 124 - discharge adapter; DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0046] As shown in Figures 1 to 9 The utility model provides a kind of two-component HP-RTM equipment, comprising:

[0047] Equipment mounting frame 13, three assembly holes 28 are opened on equipment mounting frame 13, and three assembly holes 28 are used to install cleaning agent tank body 29, A component stirring tank body 30 and B component stirring tank body 31 respectively;

[0048] Cross plate 32 is arranged at the bottom of equipment mounting frame 13, and two metering pumping assemblies and two vacuum pumps 33 are arranged on cross plate 32, two vacuum pumps 33 are connected with the top inlet end of A component stirring tank body 30 and B component stirring tank body 31 respectively by pipeline, and two metering pumping assemblies 15 are connected with the bottom outlet end of A component stirring tank body 30 and B component stirring tank body 31 respectively by pipeline;

[0049] Lifting assembly 34 is arranged at one side of equipment mounting frame 13, and the action end of lifting assembly 34 is connected with mixed glue injection head, and lifting assembly 34 is used to adjust the vertical position of mixed glue injection head;

[0050] Mixed glue injection head has two feed ports 6, two return ports 35 and one discharge port 3, two feed ports 6 are connected with two metering pumping assemblies 15 respectively by pipeline;Two return ports 35 are connected with A component stirring tank body 30 and B component stirring tank body 31 respectively by pipeline;

[0051] Control valve is arranged in mixed glue injection head, and control valve is used to close discharge port 3, to communicate feed port 6 and return port 35, or to close return port 35, to communicate feed port 6 and discharge port 3.

[0052] Wherein, the outer surface of A component stirring tank body 30 and B component stirring tank body 31 is provided with silica gel heating band.

[0053] The metering pumping assembly includes a gear pump body 36, a speed reducer 37, and a servo motor 38. The speed reducer 37 is connected to the rotating shaft of the driving gear of the gear pump body 36 through a shaft coupling, and the servo motor 38 is connected to the speed reducer 37.

[0054] The A-component stirring tank body 30 and the B-component stirring tank body 31 in the embodiment are identical in overall structure, and each includes a stirring tank 14. The bottom of the stirring tank 14 is connected to a metering pumping assembly 15 through a pipeline. The output end of the metering pumping assembly 15 is connected to the inlet end 16 of the glue injection head body 1. The glue injection head body 1 is provided with an outlet end 17 and a discharge port 3 that are in communication with the inlet end 16. The outlet end is connected to the top of the stirring tank 14 through a pipeline. The stirring tank 14 is connected to a feeding barrel 18 through a pipeline.

[0055] The glue injection head body 1 is provided with a first control valve 9. The first control valve 9 is used to control the communication between the outlet end or the discharge port 3 and the inlet end 16. When the outlet end is in communication with the inlet end 16, the material is circulated between the stirring tank 14 and the glue injection head body 1 through the delivery of the metering pumping assembly 15.

[0056] The glue material circulation system provided by the embodiment can make the glue material circulate in the glue injection head and the stirring tank when the two-component HP-RTM system does not perform glue injection. Thus, the glue material can be prevented from being solidified and precipitated when the glue injection is not performed. When the glue injection is performed, the first control valve 9 is only needed to be opened to quickly discharge the material from the discharge port 3. The overall consumption of the glue material is small, and the glue material is not solidified and precipitated.

[0057] To this end, the embodiment provides a specific embodiment of a stirring tank. The purpose is to separate the stored glue material in the stirring tank 14 from the circulated glue material, so that the circulated glue material is first fully stirred and mixed before entering the stored glue material, to avoid the solidification of the glue material.

[0058] In the above technical solution, in the state of switching between the glue injection and the circulation of the glue injection head body, it is impossible to keep the glue material in the glue injection head in a complete circulation state. That is, the material in the discharge port 3 will be in a state of stopping flowing and will be solidified.

[0059] To this end, the embodiment provides a specific embodiment of a self-cleaning glue injection head for a two-component HP-RTM glue material circulation system. The purpose is to clean and discharge the residual glue material in the discharge port 3 in a self-cleaning manner when the glue injection head body 1 is switched to the glue material circulation state, so that the discharge port 3 is kept clean and free of residual glue material.

[0060] Therefore, the injection head body 1 in the embodiment is provided with an injection head 2 at the bottom, the end of the injection head 2 away from the injection head body 1 forms a discharge port 3, the inside of the injection head body 1 is provided with two material cavities 4, the two material cavities 4 are connected to the injection head 2 through inner pipelines 5 and communicate with the discharge port 3.

[0061] The injection head body 1 corresponding to each material cavity 4 is provided with a feeding port 6, a cleaning agent injection channel 7 and a compressed air injection channel 8 which communicate with the material cavity 4.

[0062] The injection head body 1 corresponding to the feeding port 6 is provided with a first control valve 9 for controlling the material in the feeding port 6 to enter the material cavity 4.

[0063] The injection head body 1 corresponding to the cleaning agent injection channel 7 is provided with a second control valve 10 for controlling the cleaning liquid in the cleaning agent injection channel 7 to enter the material cavity 4.

[0064] The injection head body 1 corresponding to the compressed air injection channel 8 is provided with a third control valve 11 for controlling the compressed air in the compressed air injection channel 8 to enter the material cavity 4.

[0065] Wherein, by closing the first control valve 9, sequentially opening the second control valve 10 and the third control valve 11, 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.

[0066] Therefore, in the embodiment, a self-cleaning injection head is provided, after the injection head body 1 and the main injection head 2 complete the injection action, the first control valve 9 closes the feeding 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 a DOP environmentally friendly cleaning agent, which then enters the inner channel 5 and is sprayed out through the injection head 2.

[0067] 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 pipelines in the injection head body 1 and the injection head 2.

[0068] In the 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 through quick-release joints.

[0069] The feeding port 6 is connected to a resin or curing agent supply device through a quick-release joint.

[0070] Of course, the glue injection head body 1 provided by the embodiment also includes resin and curing agent in the material body circulation when not performing glue injection operation, so as to avoid the solidification of the material body in the glue injection head body 1.

[0071] To this end, the feed inlet 6 is threadedly connected with a feed seat 12 on the opening of the surface of the glue injection head body 1, the first cavity 121 and the second cavity 122 are arranged in the feed seat 12 from bottom to top, the first cavity 121 is connected with the material cavity 4, the feed adapter 123 is arranged on the glue injection head body 1 corresponding to the first cavity 121, and the discharge adapter 124 is arranged on the glue injection head body 1 corresponding to the second cavity 122. The feed adapter 123 and the discharge adapter 124 are connected with the external material body feeding device.

[0072] The first control valve 9 is arranged at the top of the feed seat 12, and is used for controlling the communication between the first cavity 121 and the material cavity 4. At this time, the glue injection head body 1 is in the glue injection operation, and the material body (resin or curing agent) enters the material cavity 4 through the first cavity 121.

[0073] The communication between the first cavity 121 and the second cavity 122 is controlled. At this time, the glue injection head body 1 is in the glue material circulation state, that is, the material body enters the first cavity 121 through the feed adapter 123, then enters the second cavity 122, and is discharged through the discharge adapter 124.

[0074] In order to more clearly describe the working principle of the first control valve 9, the first control valve 9 in the embodiment has a valve rod 91 and a driving part 92, and the valve rod 91 passes through the second cavity 122, the first cavity 121 and enters the material cavity 4.

[0075] Further, the valve rod 91 in the embodiment is used for cooperating with 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, and the specific structure includes a first rod segment, a second rod segment and an end head 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 head is greater than that of the first rod segment, such as Figure 2 From top to bottom.

[0076] At the same time, the diameter of the end head is greater than the diameter of the opening for the communication between the first cavity 121 and the material cavity 4, and the diameter of the second rod segment is smaller than the diameter of the opening for the communication between the first cavity 121 and the material cavity 4. When the end head enters the inside of the material cavity 4, the first rod segment closes the communication between the first cavity 121 and the second cavity 122, and the opening for the communication between the first cavity 121 and the material cavity 4 is located in the middle of the second rod segment.

[0077] When the end head is clamped or closed to the opening for the communication between the first cavity 121 and the material cavity 4, the second rod segment is located at the opening for the communication between the first cavity 121 and the second cavity 122.

[0078] The drive 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, thus shutting off the connection between the first cavity 121 and the material cavity 4.

[0079] Furthermore, the first control valve 9, the second control valve 10, and the third control valve 11 have the same overall structure, all of which adopt a hydraulically driven valve body structure to control the opening and closing of the feed inlet 6, the cleaning agent injection channel 7, and the compressed air injection channel 8.

[0080] The drive unit 92 moves downward through the drive valve stem 91 to the end of the valve stem 91 and enters the material chamber 4. The first chamber 121 is connected to the material chamber 4. The rod of the valve stem 91 closes the connection between the first chamber 121 and the second chamber 122. The drive unit 92 is specifically a hydraulic cylinder or a pneumatic cylinder.

[0081] Furthermore, in this embodiment, the inner pipe 5 includes a horizontal section 51 and an inclined section 52. One end of the horizontal section 51 is connected to the material chamber 4, and the other end of the horizontal section 51 is connected to the inclined section 52. The end of the inclined section 52 away from the horizontal section 51 is connected to the injection head 2.

[0082] Centered on the connection between the inclined section 52 and the injection head 2, multiple inclined sections 52 are evenly distributed on the top circumferential position of the injection head 2. Furthermore, two adjacent inclined sections 52 form a "V" shape. During the process of the inclined sections 52 entering the injection head 2, the discharge of multiple inclined sections 52 is directed towards the axis of the injection head 2. Therefore, the discharge of multiple inclined sections 52 collides at the axis of the injection head 2, which can better mix them without affecting the mixing and discharge efficiency of the injection head 2.

[0083] Of course, in this embodiment, the injection head 2 is assumed to be a straight pipe structure. It was 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 components A and B, but there is an upper limit to the length.

[0084] like Figure 5 As shown. The simulation of the working state of the injection head 2 with two symmetrically distributed inner pipes 5 is as follows: The selection of the flow channel diameter for the injection head 2 is as follows: Under the premise of controlling the flow rate with a regulating valve, changing the flow channel diameter can change the flow velocity and pressure. The flow channel diameter is selected according to specific needs. In this paper, the inner pipe and the injection head 2 have the same pipe diameter, which is 3mm.

[0085] Among them, the influencing factors of flow channel design are:

[0086] like Figure 7As shown, the main body is simplified under the premise that the size of the glue injection head main body does not change, the structure of the flow channel is affected by three factors of X, Y and θ, X represents the length of the horizontal section 51, Y represents the axial length of the glue injection head 2, and θ represents the included angle between the horizontal section 51 and the inclined section 52.

[0087] Single factor analysis is performed on the three factors to obtain the influence law of the three factors on the mixing uniformity, as shown in Figure 5

[0088] Among them, the floating degree represents the maximum value minus the minimum value of the volume fraction of component B at the outlet cross section, the smaller the floating degree, the better the mixing uniformity, and vice versa. The mixing uniformity is worse. Y factor has the greatest influence on the mixing uniformity, and the specific value is as shown in Figure 7 and Figure 8 .

[0089] As a result: in the case that the floating degree between the maximum and minimum values of the material mixing uniformity tends to be stable, the length of the glue injection head 2 is preferably 35-45 mm.

[0090] Y is from 5 mm to 45 mm, and the mixing uniformity is better and better. Although increasing the axial length of the glue injection head 2 can improve the mixing degree of A and B component rubber, the larger Y is, the larger the volume of the glue injection head will be, which will cause great inconvenience. Therefore, considering the premise that the length of 45 mm does not change, the flow channel structure is optimized to improve the mixing uniformity.

[0091] Based on this, a spiral pipe structure is proposed, and the flow channel diameter of the spiral pipe structure is still 3 mm, and the variables are the number of spiral turns and the pitch, as shown in Figure 7 and Figure 8 .

[0092] The glue injection head 2 in the embodiment can be provided with a spiral pipe structure, and the pitch of the spiral pipe structure is in the range of 9.17-13.75 mm.

[0093] As shown in Figure 8 , Figure 9 and Figure 10 , using a spiral structure can improve the mixing uniformity of the rubber, and under the limitation of the pipe diameter of the spiral pipe structure and the preferred length range of the glue injection head 2, when the pitch is 13.75 mm and the number of turns is 3, the optimal mixing uniformity can be achieved, and the outlet pressure of the glue injection head 2 changes little.

[0094] In the embodiment, in order to ensure the uniformity of the mixing of the two material cavities 4 (A and B components) into the glue injection head 2, each material cavity 4 is connected to the glue injection head 2 through two inner pipes 5. The connection of the four inner pipes 5 and the glue injection head 2 is uniformly distributed along the circumference of the glue injection head 2, so that the A and B components entering the glue injection head 2 can be mixed uniformly.​

[0095] The embodiment mainly aims at the mixing and conveying of the A and B components, i.e. the resin and the curing agent, and provides a specific implementation of the injection head 2, which aims to avoid the adhesion of the material in the injection head 2 and easily form a cured adhesive film on the inner wall surface of the injection head 2. Before the cleaning process by using high-pressure gas, the adhesive film adhered to the inner wall of the injection head 2 can be removed.

[0096] Further, the embodiment provides a specific implementation of the dual-component HP-RTM device.

[0097] The components of the device are determined according to the requirements of the dual-component HP-RTM device, including a stirring module, a metering module and a mixing module.

[0098] The stirring module includes an A-component stirring tank and a B-component stirring tank.

[0099] The metering module includes a gear pump or a plunger pump, a reducer and a servo motor.

[0100] The mixing module includes a mixing injection head.

[0101] The selection of each stirring module, metering module and mixing module is as follows:

[0102] The stirrer is determined according to the stirring tank volume of the A-component stirring tank and the B-component stirring tank and the corresponding component physical property parameters, and the stirrer is three-dimensionally modeled. The obtained model is divided into a static domain and a dynamic domain in the tank, and the rotational speed is determined according to the stirring experience of the components. The flow state of the components is determined according to the Reynolds number, and a relevant model is selected for calculation. The quantitative and qualitative analysis is performed through the setting of monitoring points and cloud maps in the model. The influence degree of the influencing factors is sorted through orthogonal test, and the model is reconstructed for verification, thereby completing the selection of the A-component stirring tank and the B-component stirring tank.

[0103] The flow of the component conveying of the device is determined according to the injection amount of the mold, and the power source of the component conveying in the metering module is selected as a gear pump or a plunger pump. The reducer and the servo motor are determined according to the load of the device. The rotational speed of the servo motor is converted according to the flow and pressure of the device. In the case of the same pressure and different ratios, the flow of the metering module corresponding to the A-component stirring tank and the B-component stirring tank is distributed, so that the components in the A-component stirring tank and the B-component stirring tank can be conveyed according to the set ratio.

[0104] According to the component mixing of the A-component stirring tank body and the B-component stirring tank body and the control valve based on the hydraulic control form, the communication states of the feeding port, the back feeding port and the discharging port are controlled, the mixing module is designed, the mixing glue injection head is mixed, and the flow channel of the mixing glue injection head is connected to the feeding port, the back feeding port and the discharging port.

[0105] According to the component flow direction in the equipment, the connection between the modules of the equipment is built.

[0106] The glue injection pressure of the mixing glue injection head for the mold is less than 3Mpa, the component conveying power source in the metering module adopts a gear pump; the glue injection pressure is greater than 3Mpa, the component conveying power source in the metering module adopts a plunger pump.

[0107] The purpose of the gear pump and the plunger pump is to provide pressure; the reducer is selected according to the motor and the pump to ensure normal rotation under the running load; the servo motor adopts a variable frequency motor, which is connected to a frequency converter to realize speed regulation, so as to change the flow size.

[0108] The gear pump is connected to the pipeline below the stirring tank on the left side, the components enter from the left side, and the right side is pressurized and output; the gear pump is connected to the reducer through the shaft coupling; the reducer is connected to the variable frequency motor through the shaft coupling; the variable frequency motor is connected to the power supply, and the A and B component metering modules are the same.

[0109] The mixing module also includes a high-pressure mixing glue injection head. The mixing glue injection head has A and B component inlets, A and B component backflow ports, hydraulic oil inlets and outlets (hydraulic oil inlets and outlets of the first control valve, the second control valve and the third control valve), cleaning agent interfaces, etc., and the internal flow channel is designed as a counter-flow channel.

[0110] Among them, the hydraulic oil mainly realizes the movement of the piston in the control valve, that is, it can control whether the components A and B are mixed or circulated; the A and B component inlets are respectively connected to the right outlet of the gear pump / plunger pump through the pipeline; the A and B component backflow ports are respectively connected to the backflow ports of the stirring tank through the pipeline.

[0111] The lifting assembly connected to the mixing glue injection head is lifted by a hand-operated screw rod.

[0112] The design method of the stirring tank is mainly according to the stirring tank volume and the viscosity of the selected fast curing resin and other parameters, and a folding turbine type stirrer is selected, which has the characteristics of axial and radial flow, which is more favorable for uniform stirring and uniform heat transfer.

[0113] According to the "mixing and mixing equipment design selection manual", the design of the related size of the stirrer, and then through the three-dimensional modeling software to carry out three-dimensional modeling of the stirring equipment, including the stirrer, the stirring shaft, and the tank; divide the static and dynamic domains of the fluid, define the walls of the stirring equipment; according to the experience of domestic glue injection machine for resin stirring, determine the speed, set the relevant boundary conditions; according to the Reynolds number to determine the flow state, select the relevant model for calculation; through the setting of monitoring points and cloud map for quantitative and qualitative analysis. Then through the orthogonal test, the influence degree of the influencing factors is sorted, the model is verified, and the design is completed.

[0114] The system component pressure power source is only pump, so first to determine the flow, pressure range of equipment, according to this range to select gear pump / plunger pump.

[0115] Then according to the load and working condition to determine the reducer and servo motor (variable frequency motor), if the resin viscosity is small, you can consider omitting the reducer, directly use variable frequency motor to connect the pump.

[0116] The frequency converter is selected according to the motor power and load size, such as motor 5.5Kw, the power of frequency converter should be ≥5.5Kw. If the working condition often appears overload, the power of frequency converter should be as large as possible. After the above parts selection is completed, the shaft coupling is connected to form a metering device.

[0117] According to the flow and pressure of the equipment, the speed is converted, so that the flow can be automatically distributed under the condition of different proportioning and same pressure, so that A and B components can be delivered to the mixing glue head according to the set proportion.

[0118] The lifting assembly includes many, such as gear transmission lifting, hydraulic lifting, transmission wheel lifting, etc. According to the equipment demand to choose. For example, this patent uses the method of lead screw lifting. First of all, considering that the weight of the glue injection head is not large, so the lifting mechanism does not need a large bearing capacity, the lead screw transmission can meet the requirements; secondly, the lifting distance precision is required, the lead screw transmission precision is good, which can meet the requirements; thirdly, the structure is simple, the lead screw mechanism can meet the requirements. Therefore, we need to determine which lifting transmission mechanism to use according to different working conditions.

[0119] The device provided by the embodiment runs as follows:

[0120] Start: after starting the device, the frequency converter works, the servo motor rotates, 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 the components A and B are circulated in the flow channel and the stirring tank.

[0121] Heating: the tank body silica gel heating belt (resistance wire is coated with a layer of silica gel material, forming the structure of the tank body matched with the stirring tank) starts heating, both can be adjusted independently, reducing the temperature gradient inside and outside the tank.

[0122] Glue injection: after the mold and tank body are heated to the specified temperature, the electromagnetic valve is controlled to open or close through the man-machine interface, the piston in the glue injection head is offset, the channel is opened, the control valve is closed to close the return port 35, the feed port 6 and the discharge port 3 are connected (for the two components A and B entering the mixing glue injection head), the components A and B collide and mix, and then are punched out under high pressure.

[0123] Cleaning: after the glue injection is completed, the channel connected with the cleaning agent is opened, the channels of components A and B are closed, cleaning is performed, and then compressed air is used to blow out from the discharge port.

[0124] Reset: the cleaning agent channel is closed, the channel is closed, that is, the control valve is used to close the discharge port 3, the feed port 6 and the return port 35 are connected, and the components A and B continue to circulate.

[0125] The utility model provides a kind of HP-RTM equipment building method and equipment connection mode, including from the structure optimization of stirring tank design to simulation, the selection of metering system is considered, the design criterion and simulation process of glue injection head, according to the flow direction of component, this building method can be divided into several subsystems Complex equipment, it is helpful to the research and development of HP-RTM equipment group.

[0126] The above examples are only exemplary embodiments of the present application and are not used to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the present application.

Claims

1. A two-component HP-RTM apparatus, characterized in that, It comprises: a device mounting frame (13) on which three assembly holes (28) are opened, the three assembly holes (28) being respectively used for mounting a cleaning agent tank (29), an A component stirring tank (30) and a B component stirring tank (31); a cross plate (32) arranged at the bottom of the device mounting frame (13), two metering pumping assemblies and two vacuum pumps (33) being arranged on the cross plate (32), the two vacuum pumps (33) being connected to the top inlet ends of the A component stirring tank (30) and the B component stirring tank (31) through pipes respectively, and the two metering pumping assemblies (15) being connected to the bottom outlet ends of the A component stirring tank (30) and the B component stirring tank (31) through pipes respectively; a lifting assembly (34) arranged at one side of the device mounting frame (13), the lifting assembly (34) being connected to a mixing glue injection head at an action end, and the lifting assembly (34) being used for adjusting the vertical position of the mixing glue injection head; the mixing glue injection head having two feeding ports (6), two return ports (35) and one discharging port (3), the two feeding ports (6) being connected to the two metering pumping assemblies (15) through pipes respectively, and the two return ports (35) being connected to the A component stirring tank (30) and the B component stirring tank (31) through pipes respectively; the mixing glue injection head being provided with a control valve, the control valve being used for closing the discharging port (3), connecting the feeding ports (6) and the return ports (35), or closing the return ports (35) and connecting the feeding ports (6) and the discharging port (3); the mixing glue injection head comprising a glue injection head main body (1), the glue injection head main body (1) being provided with a glue injection head (2) at the bottom, the end of the glue injection head (2) away from the glue injection head main body (1) forming the discharging port (3), the inside of the glue injection head main body (1) being provided with two material cavities (4), the two material cavities (4) being connected to the glue injection head (2) through inner pipes (5) and being communicated with the discharging port (3); the feeding ports (6) and the return ports (35) being arranged in the inner wall of the glue injection head main body (1) corresponding to each material cavity (4); the control valve comprising a first control valve (9) arranged on the glue injection head main body (1) corresponding to the feeding port (6), and being used for controlling the material in the feeding port (6) to enter the material cavity (4); the inner pipe (5) comprising a horizontal section (51) and an inclined section (52), one end of the horizontal section (51) being connected to the material cavity (4), the other end of the horizontal section (51) being connected to the inclined section (52), one end of the inclined section (52) away from the horizontal section (51) being connected to the glue injection head (2); and a plurality of the inclined sections (52) being evenly distributed on the top circumferential position of the glue injection head (2) with the inclined section (52) and the glue injection head (2) being connected as the center.

2. The two-component HP-RTM device according to claim 1, characterized in that, The outer surface of the A component stirring tank body (30) and the B component stirring tank body (31) is provided with a silica gel heating belt.

3. The dual-component HP-RTM device according to claim 1, characterized in that, The metering pumping assembly comprises a gear pump body (36), a speed reducer (37) and a servo motor (38), the speed reducer (37) is connected to the rotating shaft of the driving gear of the gear pump body (36) through a shaft coupling, and the servo motor (38) is connected to the speed reducer (37).

4. The dual-component HP-RTM device according to claim 1, characterized in that, A cleaning agent injection channel (7) and a compressed air injection channel (8) are arranged 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) through a pipeline; The control valve further comprises a second control valve (10) arranged on the glue injection head body (1) corresponding to the cleaning agent injection channel (7) and a third control valve (11) arranged on the glue injection head 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 cavity (4); Wherein, by closing the first control valve (9), sequentially opening the second control valve (10) and the third control valve (11), 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).

5. The dual-component HP-RTM device according to claim 1, characterized in that, The feed inlet (6) is arranged on the surface of the glue injection head body (1), an opening screw thread of which is connected with a feed seat (12), the feed seat (12) is internally provided with a first cavity (121) and a second cavity (122) from bottom to top, the first cavity (121) is connected with the material cavity (4), the glue injection head body (1) corresponding to the first cavity (121) is provided with a feed adapter (123), and the glue injection head body (1) corresponding to the second cavity (122) is provided with a discharge adapter (124); The first control valve (9) is arranged on the top of the feed seat (12), and is used to control the communication between the first cavity (121) and the material cavity (4) or the communication between the first cavity (121) and the second cavity (122); The first control valve (9) has a valve rod (91) and a driving part (92), the valve rod (91) penetrates through the second cavity (122) and the first cavity (121) and enters the material cavity (4); The driving part (92) drives the upward movement of the valve rod (91) to close the connection between the first cavity (121) and the material cavity (4) by the end of the valve rod (91); or the driving part (92) drives the downward movement of the valve rod (91) to enter the material cavity (4) by the end of the valve rod (91), and the first cavity (121) is communicated with the material cavity (4); the rod body of the valve rod (91) closes the communication between the first cavity (121) and the second cavity (122). The driving part (92) drives the upward movement of the valve rod (91) to close the connection between the first cavity (121) and the material cavity (4) by the end of the valve rod (91); or the driving part (92) drives the downward movement of the valve rod (91) to enter the material cavity (4) by the end of the valve rod (91), and the first cavity (121) is communicated with the material cavity (4); the rod body of the valve rod (91) closes the communication between the first cavity (121) and the second cavity (122).

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