A high-precision control system and method for temperature and pressure during composite vulcanization

Abstract

This invention relates to the field of hydraulic press technology, and more particularly to a high-precision control system and method for temperature and pressure during composite vulcanization. The system includes a hydraulic press and an oil temperature controller, both connected to a control platform. The control platform has touch panels equipped with a PLC pressure control system and a PLC temperature control system, respectively. Each PLC pressure control system and PLC temperature control system is connected via a PROFINET network communication module for data exchange. Linked control is achieved through PROFINET communication between the pressure control system and the oil temperature controller. Furthermore, the touch screen's data recording function enables the recording and display of production data.

Description

Background Technology

[0001] Currently, it is known that pressure and temperature control in existing composite vulcanization molding processes mainly relies on manual operation by the worker on hydraulic presses and oil temperature controllers, respectively. Pressure and temperature control are separate, and there is no data recording of the production process, which is detrimental to later product quality inspection. Furthermore, existing hydraulic presses and mold temperature controllers operate independently, meaning that pressure and temperature control are two separate control systems during composite molding, lacking fully automated centralized linkage control and data recording. To address these technical shortcomings, this invention proposes a high-precision control system and method for temperature and pressure in composite vulcanization. This system achieves linkage control through PROF INET communication between the pressure control system and the oil temperature controller control system, and utilizes a touchscreen data recording function to record and display production data. Summary of the Invention

[0002] The purpose of this invention is to solve the problems existing in the prior art by proposing a high-precision control system and control method for temperature and pressure in composite vulcanization.

[0003] To achieve the above objectives, the present invention adopts the following technical solution:

[0004] A high-precision control system for temperature and pressure during composite vulcanization includes a hydraulic press and an oil temperature controller. The hydraulic press and oil temperature controller are respectively connected to a control platform. The control platform has touch panels equipped with PLC pressure control systems and PLC temperature control systems, respectively. Each PLC pressure control system and PLC temperature control system is connected via a PROFINET network communication module for data exchange. The touch panels include a touch layer module, a hydraulic press equipment information module, an oil temperature controller equipment information module, multiple data receiving modules, and multiple data sending modules. Multiple main control modules or control modules, a background service operation module, and an APP mini-program connection module are provided for connecting to mobile storage media; the port of the background service operation module is connected to the ports of the multiple main control modules or control modules for data interaction; the hydraulic press includes a pressure cylinder and a pressure sensor that controls the pressure cylinder, a slider and a displacement sensor that controls the sliding movement of the slider, and an upper mold heating assembly connected to the slider, a lower platform located below the upper mold heating assembly, and a lower mold heating assembly set above the lower platform; the upper mold heating assembly and the lower mold heating assembly are respectively connected to the oil temperature controller through a heating oil pipe group, and multiple temperature control gauges are set on the oil temperature controller.

[0005] Furthermore, the PLC pressure control system includes a pressure controller, a PLC control valve body, and a programmable controller integrated into the main control chip and PROFINET network communication module. This allows the pressure sensor and displacement sensor of the hydraulic press to exchange data with the system in a one-to-one or one-to-many manner, forming an independent PLC pressure control system. The main control module and the control module's ports control the pressure sensor to receive and process the pressure value, holding pressure value, pressure release value, and pressure release number of its pressure cylinder through the port of the data receiving module, and then feed it back to the port of the data sending module. The port of the data sending module is connected to the port of the hydraulic press equipment information module.

[0006] Furthermore, the pressure controller, PLC control valve body, and programmable controller are integrated into the main control chip and interact with each other via the PROFINET network communication module. After forming visualized curve data information on the data center platform or APP user port, the data is imported into the mobile storage medium via the APP mini-program connection module.

[0007] Furthermore, the PLC temperature control system includes a PID controller, a temperature sensor, a data I / O port, and a programmable controller integrated into the main control chip and PROFINET network communication module. The temperature control unit of the oil temperature controller exchanges data with the system in a one-to-one or one-to-many manner, forming an independent PLC temperature control system. The ports of the main control module and the control module are respectively connected to the ports of the PID controller, temperature sensor, and data I / O port, and then connected to the temperature control unit for mutual data transmission and interaction. Temperature data command information is received and processed through the port of the data receiving module and then fed back to the port of the data sending module. The port of the data sending module is connected to the oil temperature controller equipment information module.

[0008] Furthermore, the PID controller, temperature sensor, data I / O port, and programmable controller are integrated into the main control chip and interact with each other via the PROFINET network communication module to form visualized curve data information on the data center platform or APP user port. The data is then imported into the mobile storage medium via the APP mini-program connection module.

[0009] Furthermore, the main control module or control module can be integrated into one unit or multiple separate units, and then the data output and data exchange can be performed through the PROFINET network communication module to perform linkage control of the hydraulic press equipment information module and the oil temperature controller equipment information module.

[0010] Furthermore, the upper mold heating assembly is provided with multiple upper oil circuit interfaces, and the lower mold heating assembly is provided with multiple lower oil circuit interfaces; the oil temperature controller is provided with multiple upper oil circuit interfaces that match the multiple upper oil circuit interfaces; the oil temperature controller is provided with multiple lower oil circuit interfaces that match the multiple lower oil circuit interfaces.

[0011] Furthermore, the plurality of upper oil circuit interfaces are connected to the plurality of upper oil circuit interfaces one via corresponding upper heating oil pipe groups; the plurality of lower oil circuit interfaces are connected to the plurality of lower oil circuit interfaces one via corresponding lower heating oil pipe groups.

[0012] A method for high-precision control of temperature and pressure during composite vulcanization, comprising the high-precision control system for temperature and pressure during composite vulcanization as described above, comprising the following steps:

[0013] S1: Set the relevant parameters for each step of composite vulcanization in the corresponding PLC pressure control system and PLC temperature control system on the touch panel;

[0014] S2: Click the start button and confirm the operation. The control system will then execute step one.

[0015] S3: The pressure cylinder of the hydraulic press presses down the composite material under the control of the pressure sensor, and the pressure cylinder continuously maintains the pressure on the composite material;

[0016] S4: Wait for the temperature of the composite material to reach the temperature set in step 1, and then start the heat preservation timer;

[0017] S5: After the heat preservation time set in step 1 is completed, start venting and continue to execute the venting number and venting pressure set in step 1;

[0018] S6: Continue executing the relevant parameters set in each subsequent step according to the temperature and pressure required in the composite vulcanization until the steps required by the system are completed;

[0019] S7: After the steps are completed, the relevant parameters are synchronized and imported into the mobile storage medium via the APP mini-program connection module.

[0020] S8: When the temperature of the parameters in the modulation system reaches 300℃, the system will stop operating.

[0021] Furthermore, in step S4, the process of executing the relevant parameters set in each subsequent step is the same as in step one, and the parameters included in sequence are: holding pressure, temperature, holding time, number of venting times, and venting pressure.

[0022] Compared with existing technologies, the advantages of this invention are:

[0023] The present invention provides a high-precision control system and control method for temperature and pressure during composite vulcanization. By establishing PROF INET communication between the pressure control system and the oil temperature control system, linkage control is achieved. Furthermore, the production data is recorded and displayed through the data recording function of the touch screen. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the press and oil temperature controller in this invention;

[0025] Figure 2 This is a system workflow framework diagram in this invention;

[0026] Figure 3 This is a diagram of the touch panel module in this invention;

[0027] Figure 4 This is a flowchart illustrating the workflow of the PLC temperature control system in this invention.

[0028] Figure 5 This is a flowchart illustrating the workflow of the PLC pressure control system in this invention.

[0029] Figure 6 This is a graph of curve data in this invention.

[0030] In the diagram: 1-Hydraulic press; 2-Oil temperature controller; 3-Control platform; 4-Touch panel; 5-Hydraulic press equipment information module; 6-Oil temperature controller equipment information module; 7-Data receiving module; 8-Data sending module; 9-Main control module or control module; 10-Background service operation module; 11-APP mini-program connection module; 12-Mobile storage medium; 14-Pressure cylinder; 15-Slider; 16-Upper mold heating assembly; 17-Lower platform; 18-Lower mold heating assembly; 19-Temperature instrument control table; 20-PROFINET network communication module; 21-Upper oil circuit interface; 22-Lower oil circuit interface; 23-Upper oil circuit interface one; 24-Lower oil circuit interface one; 25-Upper heating oil pipe assembly; 26-Lower heating oil pipe assembly. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1The diagram shows the structure of the hydraulic press 1 and oil temperature controller 2 in this invention. The hydraulic press 1 and oil temperature controller 2 are connected to the control platform 3. The hydraulic press 1 includes a pressure cylinder 14 and a slider 15. An upper mold heating assembly 16 is provided below the slider 15, and the upper mold heating assembly 16 is provided with multiple upper oil passage interfaces 21. A lower platform 17 is also provided below the hydraulic press 1, and a lower mold heating assembly 18 is provided above the lower platform 17, and the lower mold heating assembly 18 is provided with multiple lower oil passage interfaces 22.

[0033] Example 2, please continue to refer to Figure 1 In this embodiment, the oil temperature controller 2 is equipped with multiple temperature display control gauges 19. Each temperature control gauge 19 has an upper oil circuit interface 23 and a lower oil circuit interface 24 that correspond to the upper oil circuit interface 21 and the lower oil circuit interface 22, respectively. In this embodiment, the upper oil circuit interface 21 and the upper oil circuit interface 23 are connected via corresponding upper heating oil pipe groups 25, and the lower oil circuit interface 22 and the lower oil circuit interface 24 are connected via corresponding lower heating oil pipe groups 26. Each set of interfaces consists of two corresponding interfaces. In this embodiment, there are multiple sets of upper and lower oil circuit interfaces. Each upper oil circuit interface 21 is connected to the upper oil circuit interface 23 on the temperature control gauge 19 via an upper heating oil pipe; each lower oil circuit interface 22 is connected to the lower oil circuit interface 24 on the temperature control gauge 19 via a lower heating oil pipe.

[0034] Example 3, please continue to refer to Figure 1 In the middle, a control platform 3 is also set on one side of the hydraulic press. The control platform 3 is also set with a touch panel 4. The touch panel 4 is equipped with a PLC pressure control system and a PLC temperature control system. The PLC pressure control system and the PLC temperature control system are respectively equipped with PROFINET network communication modules to interact with each other and exchange data.

[0035] Example 4, based on Example 3, please refer to... Figure 3The diagram below shows the modules of the touch panel 4. The touch panel 4 includes a touch layer module, a hydraulic press equipment information module 5, an oil temperature controller equipment information module 6, multiple data receiving modules 7, multiple data sending modules 8, multiple main control modules or control modules 9, a background service operation module 10, and an APP mini-program connection module 11 for connecting to a mobile storage medium 12. The port of the background service operation module 10 interacts with the ports of the multiple main control modules or control modules 9. In this embodiment, the ports of the touch layer module are respectively connected to the multiple main control modules or control modules 9, the multiple data sending modules, and the multiple data receiving modules. The system comprises a block, a hydraulic press equipment information module, an oil temperature controller equipment information module, an APP mini-program connection module, and a backend server operation module, forming a multi-touch or single-touch interface. Touch can be categorized as resistive or capacitive. A resistive touchscreen is essentially a sensor; although less commonly used now, it was still employed in many LCD modules. This type of screen can use four, five, seven, or eight lines to generate a screen bias voltage and simultaneously read back the voltage at the touch point. Here, we will primarily use a four-line interface as an example. Its characteristics are: thin film + glass (requires a sharp, hard object to click), and key points are thinness and transparency. The front panel is slightly less rigid and can be bent by pressing with a hard object, while the back panel is very rigid and will not bend. The front and back panels are not in contact under normal conditions, but the front panel will undergo (local) deformation when pressed by external force (both are existing technologies and will not be described in detail here). Another type is capacitive touch. The principle of capacitive touch is to use the phenomenon of human body current sensing to form a capacitor between the finger and the screen. When the finger touches, it draws a tiny current, which causes current to flow on the four electrodes of the touch panel. The controller can calculate the coordinates of the touch point by calculating the ratio of these four currents. Capacitive touch screens can support multi-touch (as well as single-touch). Based on the previously explained principle of capacitive touchscreens, a single capacitive touchscreen panel cannot support multi-touch. However, a large touchscreen panel can be divided into multiple smaller blocks, each of which is essentially an independent small capacitive touchscreen panel (both are existing technologies and will not be elaborated upon here). In this embodiment, the touch panel 4 is a capacitive touchscreen that supports both multi-touch and single-touch. By calculating the ratio of current during touch using the main control module or the controller in the control module 9, the coordinates of the touch point can be converted using an AD converter and mapped to the interfaces or ports in each module to control the PLC pressure control system and PLC temperature control system in this embodiment. Communication between the PLC pressure control system and PLC temperature control system utilizes a PROFINET network communication module.

[0036] Example 5, continuing from Example 4, utilizes PROFINET network communication, a new Ethernet communication system developed by Siemens and the PROFIBUS User Association. PROFINET offers communication capabilities between products from multiple manufacturers, automation and engineering modes, and is optimized for distributed intelligent automation systems, significantly reducing configuration and commissioning costs. The PROFINET system integrates PROFIBUS-based systems, providing protection for existing system investments. It can also integrate other fieldbus systems. In this example, it effectively combines the PLC pressure control system on the hydraulic press and the PLC temperature control system on the oil temperature controller. It is primarily used for controller-to-controller communication between multiple main control modules or control modules 9 in this example. In the control program, it facilitates communication between the controller and the hydraulic press and oil temperature controller equipment, and on the equipment, it controls their motion. Each module in the PROFINET network communication module includes mechanical, electronic, and application software. The application software for these components can be developed using dedicated programming tools and downloaded to the relevant controller, enabling communication with existing fieldbus systems. This allows for easy control of servo motion control systems, achieving network security and automation of the control process.

[0037] Example 6: Please refer to Figure 4 The diagram below shows the workflow framework of the PLC temperature control system in this embodiment. The PLC temperature control system includes a temperature sensor, a PID controller, and a programmable controller. After the data I / O ports are integrated and interacted with the main control chip and the PROFINET network communication module, the temperature control table 19 of the oil temperature controller 2 exchanges data with the system in a one-to-one or one-to-many manner to form an independent PLC temperature control system. This system controls the upper heating oil pipe group 25 connecting the upper mold heating assembly 16 and the oil temperature controller 2, and the lower heating oil pipe group 2 connecting the lower mold heating assembly 18 and the oil temperature controller 2, respectively, to heat the upper mold heating assembly 16 and the lower mold heating assembly 18 to the relevant temperatures set in each step of the system. During the heating in each step, the temperature data information formed by the data interaction between the temperature sensor, PID controller, programmable controller, data I / O port, and main control chip through the PROFINET network communication module 20 can be synchronously displayed on the data center platform or APP user port to form visualized curve data information. Then, it can be imported into the mobile storage medium 12 and saved through the APP applet connection module 11. The temperature data of the process can be traced or referenced, and can also be verified in subsequent processes to achieve a quality assurance of the process parameters.

[0038] Example 7: Please refer to Figures 5-6The diagram below shows the workflow framework of the PLC pressure control system in this embodiment. The PLC pressure control system includes a pressure controller, a PLC control valve body, a programmable controller integrated with a main control chip and a PROFINET network communication module 20. The pressure cylinder 14 and slider 15, controlled by pressure and displacement sensors on the hydraulic press 1, exchange data with the system in a one-to-one or one-to-many manner to form an independent PLC pressure control system. This system controls the pressure parameters generated during the process of the pressure cylinder 14 driving the slider 15 downwards. The pressure parameters generated during each process of pressurization, pressure holding, or pressure release are simultaneously displayed on the data center platform or APP user port as visualized curve data. This data is then imported into the mobile storage medium 12 via the APP applet connection module 11 and saved. This allows for traceability and reference of the pressurization, pressure holding, or pressure release data during the manufacturing process, ensuring the quality of the manufacturing process parameters during subsequent verification.

[0039] Example 8: Please refer to Figure 2 The diagram below shows the system workflow framework in this embodiment. The port of the background service running module 10 is connected to the ports of the multiple main control modules or control modules 9 for data interaction. The ports of the main control modules and control modules 9 control the pressure sensor to receive and process the pressure value, holding pressure value, pressure release value, and pressure release number of the pressure cylinder through the port of the data receiving module 7, and then feed it back to the port of the data sending module 8. The port of the data sending module 8 is connected to the port of the hydraulic press equipment information module 5. The hydraulic press equipment information module displays the pressure value, holding pressure value, pressure release value, and pressure release number of the pressure cylinder.

[0040] Example 9: Please continue to refer to Figure 2 In this process, the ports of the main control module and the control module 9 are respectively connected to the ports of the PID controller, temperature sensor, and data I / O, and then connected to the temperature instrument control table to transmit and interact with each other. The instruction information of temperature data is received and processed through the port of the data receiving module 7 and then fed back to the port of the data sending module 8. The port of the data sending module 8 is connected to the oil temperature machine equipment information module 6. The temperature during the execution process is displayed in the oil temperature machine equipment information module 6. The temperature in the oil temperature machine equipment information module 6 is the temperature data of each temperature instrument control table 19 on the oil temperature machine that is interactively transmitted to the oil temperature machine equipment information module 6.

[0041] Example 10: Based on Examples 8 and 9, multiple main control modules or control modules 9 can be integrated into one unit or separated into multiple units. After the data output and data exchange are performed by the PROFINET network communication module 20 on the hydraulic press equipment information module 5 and the oil temperature machine equipment information module 6 in linkage control, the pressure control and temperature control of the two different devices can be centrally and uniformly controlled simultaneously through a single control system.

[0042] Example 11: In this example, a method for high-precision control of temperature and pressure during composite vulcanization is described.

[0043] 1: Set the relevant parameters for each step of composite vulcanization in the PLC pressure control system and PLC temperature control system on the touch panel 4;

[0044] 2: Click the start button and confirm the operation. The control system will then execute step one.

[0045] 3: The pressure cylinder 14 of the hydraulic press presses down the composite material under the control of the pressure sensor, and the pressure cylinder 14 continuously maintains the pressure on the composite material;

[0046] 4: Wait for the temperature of the composite material to reach the temperature set in step 1, and then start the heat preservation timer;

[0047] 5: After the heat preservation time set in step 1 is completed, start venting and continue to execute the venting number and venting pressure set in step 1;

[0048] 6: Continue executing the relevant parameters set in each subsequent step according to the temperature and pressure required in the composite vulcanization process until the required steps in the system are completed;

[0049] 7: Import the implementation data of the relevant parameters after the steps are completed into the mobile storage medium 12 through the APP mini-program connection module 11;

[0050] 8: When the temperature of the parameters in the modulation system reaches 300℃, the system will stop operating.

[0051] Example 12: Based on Example 11, step 1 includes 6 steps. The process of steps 2 to 5 is the same as that of step 1. The parameters included in each step are: holding pressure, temperature, holding time, number of venting times and venting pressure. Step 8 is the last step executed in the system.

[0052] Example 13: Based on Example 12, the parameter settings for holding pressure, temperature, holding time, number of venting cycles, and venting pressure in each of the six steps are as follows:

[0053] In step one: the system is set with a holding pressure of 200T, a temperature of 90℃, a holding time of 30M, 5 venting cycles, and a venting pressure of 200T;

[0054] In step two: the system is set with a holding pressure of 600T, a temperature of 120℃, a holding time of 60M, a venting frequency of 5 times, and a venting pressure of 600T.

[0055] In step three: the system is set with a holding pressure of 800T, a temperature of 150℃, a holding time of 60M, a venting frequency of 5 times, and a venting pressure of 800T.

[0056] In step four: the system is set with a holding pressure of 1000T, a temperature of 200℃, a holding time of 60M, a venting frequency of 5 times, and a venting pressure of 1000T.

[0057] In step five: the system is set with a holding pressure of 1500T, a temperature of 250℃, a holding time of 60M, a venting frequency of 5 times, and a venting pressure of 1500T.

[0058] In step six: When the temperature set in the system reaches 300 degrees or above, the system will automatically stop running due to its self-protection function.

[0059] After setting the relevant parameters in each of the above steps, click "Automatic Start" to synchronize data recording. The pressure and temperature data curves generated during the product production process are imported into the mobile storage medium 12 via the APP mini-program connection module 11. The production process data of each product is recorded in real time, which plays a strict role in controlling product quality. The fully automatic PROFINET network communication module realizes the linkage control of the two control systems throughout the entire process, reducing the time spent on manual operation, improving the system's operating rate, greatly shortening the worker's work cycle, and eliminating the need to operate different equipment back and forth.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision control system for temperature and pressure during composite vulcanization, comprising a hydraulic press (1) and an oil temperature controller (2), characterized in that: The hydraulic press (1) and the oil temperature controller (2) are respectively connected to the control platform (3). The control platform (3) is equipped with a touch panel (4) that is equipped with a PLC pressure control system and a PLC temperature control system respectively. The PLC pressure control system and the PLC temperature control system are respectively equipped with a PROFINET network communication module to communicate with each other. The touch panel (4) is equipped with a touch layer module, a hydraulic press equipment information module (5), an oil temperature machine equipment information module (6), multiple data receiving modules (7), multiple data sending modules (8), multiple main control modules or control modules (9), a background service operation module (10), and an APP mini-program connection module (11) for connecting to a mobile storage medium (12); the port of the background service operation module (10) is connected to the ports of the multiple main control modules or control modules (9) for data interaction; The hydraulic press includes a pressure cylinder (14) and a pressure sensor that controls the pressure cylinder (14), a slider (15) and a displacement sensor that controls the sliding motion of the slider (15), and an upper mold heating assembly (16) connected to the slider (15). A lower platform (17) is located below the upper mold heating assembly (16), and a lower mold heating assembly (18) is provided above the lower platform (17). The upper mold heating assembly (16) and the lower mold heating assembly (18) are respectively connected to the oil temperature controller (2) through a heating oil pipe group. Multiple temperature control gauges (19) are provided on the oil temperature controller (2). The PLC pressure control system includes a pressure controller, a PLC control valve body, and a programmable controller integrated into the main control chip and the PROFINET network communication module (20). The pressure sensor and displacement sensor of the hydraulic press (1) exchange data with the system in a one-to-one or one-to-many manner to form an independent PLC pressure control system. The main control module and the control module (9) control the pressure sensor to receive and process the pressure value, holding pressure value, pressure release value, and pressure release number of its pressure cylinder through the port of the data receiving module (7) and then feed it back to the port of the data sending module (8). The port of the data sending module (8) is connected to the port of the hydraulic press equipment information module (5). The PLC temperature control system includes a PID controller, a temperature sensor, a data I / O port, and a programming controller integrated into the main control chip and the PROFINET network communication module (20). The temperature control table (19) of the oil temperature machine (2) exchanges data with the system in a one-to-one or one-to-many manner to form an independent PLC temperature control system. The ports of the main control module and the control module (9) are respectively connected to the ports of the PID controller, the temperature sensor, and the data I / O, and then connected to the temperature control table to transmit and interact with each other. The instruction information of the temperature data is received and processed through the port of the data receiving module (7) and then fed back to the port of the data sending module (8). The port of the data sending module (8) is connected to the oil temperature machine equipment information module (6).

2. The high-precision control system for temperature and pressure during composite vulcanization according to claim 1, characterized in that: The pressure controller, PLC control valve body and programmable controller are integrated into the main control chip and interact with each other through the PROFINET network communication module (20). After forming a visualized curve data information on the data center platform or APP user port, it is imported into the mobile storage medium (12) through the APP applet connection module (11).

3. The high-precision control system for temperature and pressure during composite vulcanization according to claim 1, characterized in that: The PID controller, temperature sensor, data I / O port and programming controller are integrated into the main control chip and interact with each other through the PROFINET network communication module (20) to form visualized curve data information on the data center platform or APP user port. Then, they are imported into the mobile storage medium (12) through the APP applet connection module (11).

4. The high-precision control system for temperature and pressure during composite vulcanization according to claim 1, characterized in that: The main control module or control module (9) can be integrated into one unit or multiple separate units, and then the data output and data exchange are performed through the PROFINET network communication module (20) to perform linkage control on the hydraulic press equipment information module (5) and the oil temperature machine equipment information module (6).

5. The high-precision control system for temperature and pressure during composite vulcanization according to claim 1, characterized in that: The upper mold heating assembly (16) is provided with multiple upper oil circuit interfaces (21), and the lower mold heating assembly (18) is provided with multiple lower oil circuit interfaces (22); the oil temperature machine (2) is provided with multiple upper oil circuit interfaces (23) that match the multiple upper oil circuit interfaces (21); the oil temperature machine (2) is provided with multiple lower oil circuit interfaces (24) that match the multiple lower oil circuit interfaces (22).

6. A high-precision control system for temperature and pressure during composite vulcanization according to claim 5, characterized in that: The plurality of upper oil circuit interfaces (21) and the plurality of upper oil circuit interfaces (23) are connected by corresponding upper heating oil pipe groups (25); the plurality of lower oil circuit interfaces (22) and the plurality of lower oil circuit interfaces (24) are connected by corresponding lower heating oil pipe groups (26).

7. A method for high-precision control of temperature and pressure during composite vulcanization, comprising a high-precision control system for temperature and pressure during composite vulcanization as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Set the relevant parameters for each step of composite vulcanization in the corresponding PLC pressure control system and PLC temperature control system on the touch panel (4); S2: Click the start button and confirm the operation. The control system will then execute step one. S3: The pressure cylinder (14) of the hydraulic press presses down the composite material under the control of the pressure sensor, and the pressure cylinder (14) maintains the pressure on the composite material. S4: Wait for the temperature of the composite material to reach the temperature set in step 1, and then start the heat preservation timer; S5: After the heat preservation time set in step 1 is completed, start venting and continue to execute the venting number and venting pressure set in step 1; S6: Continue executing the relevant parameters set in each subsequent step according to the temperature and pressure required in the composite vulcanization until the steps required by the system are completed; S7: Import the implementation data of the relevant parameters after the steps are completed into the mobile storage medium (12) through the APP applet connection module (11); S8: When the temperature of the parameters in the modulation system reaches 300℃, the system will stop operating; Step S1 includes 6 steps. The process of steps 2 to 5 is the same as that of step 1. The parameters included in each step are: holding pressure, temperature, holding time, number of venting times and venting pressure. Step S8 is the last step executed in the system.

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