Multi-mold temperature integrated control device and control method

Abstract

The present invention provides a multi-mold temperature integrated control device and a control method, belonging to the technical field of mold temperature control. The device comprises a control system, a box, a first heating component, a second heating component, a medium circuit and a medium replenishing pipeline. A first chamber, a second chamber and a third chamber are arranged in the box, and the first chamber, the second chamber and the third chamber are arranged in sequence from bottom to top. The medium circuit comprises a medium outlet pipeline, a first pump body, a distribution box, a second pump body and a medium return pipeline. The first heating component is used to heat the medium in the first chamber, and the second heating component is used to heat the medium in the second chamber. The first chamber is provided with a first temperature detector, and each mold is provided with a sixth temperature detector. In the present invention, multiple molds share the same heat source, which reduces the need to configure an independent heating device for each mold, thereby reducing equipment procurement costs and energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of mold temperature control, and particularly relates to a multi-mold temperature integrated control device and a control method. Background Art

[0002] The mold temperature control system is crucial in the injection molding process. Its main function is to adjust and maintain the optimal temperature of the mold, thereby ensuring product quality and production efficiency. The system controls the mold temperature through heating and cooling cycles, optimizes the fluidity and cooling rate of the plastic melt, and ensures temperature uniformity within the mold to avoid product warping, dimensional deviation, or surface defects. The mold temperature control system consists of a heating unit, a cooling system, a controller, and sensors. Its advantages include improving product quality, shortening the molding cycle, reducing the defect rate, and achieving energy conservation and environmental protection. However, in the prior art, the heating unit generally directly heats the mold at fixed points through heating rods, but it is not suitable for complex molds, and local overheating is prone to occur. There are also safety hazards during long-term operation of the mold. Moreover, it can generally only control the temperature of a single mold. In the case of batch production, when multiple molds are operating simultaneously, heating devices need to be equipped for each mold, which greatly increases the production cost. Summary of the Invention

[0003] The purpose of the present invention is to overcome the disadvantages and deficiencies existing in the prior art, and to provide a multi-mold temperature integrated control device and a control method.

[0004] The technical solution adopted by the present invention is as follows: In the first aspect, the present application provides a multi-mold temperature integrated control device, including a control system, a box body, a first heating component, a second heating component, a medium circuit, and a medium replenishment pipeline. The box body is provided with a first chamber, a second chamber, and a third chamber, which are arranged in sequence from bottom to top. A first conveying pipeline is provided between the lower part of the third chamber and the upper part of the second chamber, and a second conveying pipeline is provided between the lower part of the second chamber and the upper part of the first chamber. First control valves are arranged on both the first conveying pipeline and the second conveying pipeline;

[0005] The medium circuit includes a medium outlet pipeline, a first pump body, a distribution box, a second pump body, and a medium return pipeline. The distribution box is provided with a fourth chamber and a fifth chamber. The fourth chamber is provided with a plurality of output pipes, and the output pipes are connected to the molds. The fifth chamber is provided with a plurality of return pipes, and the return pipes are connected to the molds. One end of the medium outlet pipeline is connected to the lower part of the first chamber, and the other end is connected to the fourth chamber. One end of the medium return pipeline is connected to the fifth chamber, and the other end is connected to the third chamber. The first pump body is arranged on the medium outlet pipeline, and the second pump body is arranged on the medium return pipeline;

[0006] One end of the medium replenishment pipeline is connected to the third chamber, and the other end is for external connection.

[0007] The first heating component is used to heat the medium in the first chamber, and the second heating component is used to heat the medium in the second chamber.

[0008] The first chamber is provided with a first temperature detector for detecting the temperature of the medium therein, and a sixth temperature detector is provided in each mold.

[0009] In some embodiments, a third delivery pipeline is provided between the first delivery pipeline and the second delivery pipeline, and a third control valve is provided on the third delivery pipeline. When the third control valve is opened, the third chamber is communicated with the first chamber.

[0010] In some embodiments, three connecting pipelines are provided on the medium replenishment pipeline and are respectively connected to the upper parts of the first chamber, the second chamber and the third chamber. Second control valves are provided on all three connecting pipelines, and one end of the medium replenishment pipeline is for external connection.

[0011] In some embodiments, a third heating component is further included, and the third heating component is used to heat the medium in the third chamber.

[0012] In some embodiments, second temperature detectors, third temperature detectors, fourth temperature detectors and fifth temperature detectors corresponding to the second chamber, the third chamber, the fourth chamber and the fifth chamber are further included, and a seventh temperature detector is provided at one end of the return medium pipeline close to the third chamber.

[0013] In some embodiments, the volume of the third chamber is not less than the volume of the first chamber. The return medium pipeline is further connected to the first chamber, and a fourth control valve is provided on the pipeline connecting it to the third chamber, and a fifth control valve is provided on the pipeline connecting it to the first chamber.

[0014] Discharge pipelines are provided on the medium outlet pipeline downstream of the first pump body and on the return medium pipeline downstream of the second pump body, and a sixth control valve and a seventh control valve are respectively provided on the two discharge pipelines.

[0015] In a second aspect, the present application provides a control method applied to the multi-mold temperature integrated control device described above, including the following steps:

[0016] Step S1: Under standard atmospheric pressure, set the required temperature of the mold to T, select the medium according to T. When T ≤ 95°C, the medium is water, and molds are connected to the medium circuit.

[0017] Step S2: Open each first control valve, supplement the medium to each chamber through the medium replenishment pipeline until the preset liquid level is reached, and then close each first control valve after replenishment;

[0018] Step S3: Start the first heating component to heat the temperature of the medium in the first chamber to ;

[0019] Step S4: Start the first pump body and the second pump body to form a medium circulation through the medium loop, and then detect the temperatures at the corresponding positions with the first temperature detector and the sixth temperature detector, which are respectively , and at the same time, detect the ambient temperature in real time through the temperature sensor , where It is necessary to wait until the circulation is stable and reaches thermal equilibrium before measurement, and the temperature change rate is lower than the threshold; while measuring , the temperature sensor measures the reference ambient temperature ;

[0020] Step S5: Calculate the temperature loss , regarding the temperature loss , introduce a compensation coefficient to adjust the influence of the ambient temperature, and calculate the compensated temperature loss: , and obtain the average value of the temperature losses of the molds:

[0021] ;

[0022] Among them, the initial value of the compensation coefficient is extracted through the simulation results or obtained through historical data analysis. Subsequently, compare each with the actual temperature loss, record the error , and if the error continuously increases or decreases within a certain range, adjust the compensation coefficient , using the linear adjustment method: , , is the adjustment coefficient, is the average error;

[0023] Step S6: Close the first pump body and the second pump body, start the second heating component, and through the second heating component, heat the temperature of the medium in the second chamber to , and at the same time, through the first heating component, heat the temperature of the medium in the first chamber to . After heating is completed, start the first pump body and the second pump body to form a medium circulation through the medium loop, and then detect the temperatures at the corresponding positions with the first temperature detector and the sixth temperature detector, which are respectively , and conduct real-time monitoring;

[0024] Step S7: Determine whether it holds, where is set according to the mold processing requirements; if it holds, the first heating component and the second heating component maintain the temperatures of the media in the first chamber and the second chamber, and if it does not hold, calculate the error , and through the second heating component, heat the temperature of the media in the second chamber to , and at the same time, through the first heating component, heat the temperature of the media in the first chamber to .

[0025] In some embodiments, in step S7, the following steps are included:

[0026] Step S71: If it is determined that is not within the range, calculate the error , and at the same time introduce a PID control algorithm to optimize the control signal for real-time adjustment of the output power of the heating component. The algorithm is as follows:

[0027]

[0028] where is the gain parameter;

[0029] Step S72: Dynamically adjust the PID gain parameter through a machine learning model to reduce the influence of the ambient temperature.

[0030] In some embodiments, in step S72, the following steps are included:

[0031] Step S721: Collect system operation data, and the collection includes , and set a fixed time interval to update the data set;

[0032] Step S722: Data preprocessing, first clean the data, process missing values and outliers, and then standardize or normalize the data for easy model processing;

[0033] Step S723: Model training and verification, select a model, train the model using the historical data set, and then evaluate the model performance using cross-validation;

[0034] Step S724: Real-time parameter adjustment, establish a feature vector:

[0035] ,

[0036] then predict the PID parameter: ;

[0037] Step S725: Real-time update the PID gain parameter, 。

[0038] In some embodiments, when it is necessary to reduce the temperature of the medium in the first chamber, the following steps are included:

[0039] Step A1: Adjust the first heating component to the required power in advance. At the same time, open the first control valve on the first pipeline and close the first control valve on the second pipeline, so that the medium in the first chamber is transported to the third chamber. When the medium in the first chamber reaches the predetermined liquid level, first close the first pump body, and then close the second pump body after a certain period of time;

[0040] Step A2: Open the second control valve near the first chamber. At the same time, supplement the first chamber with a predetermined amount and a predetermined temperature of the medium through the medium replenishment pipeline, so that the temperature of the medium in the first chamber is reduced to the required temperature. After the replenishment is completed, close the second control valve;

[0041] Step A3: Start the first pump body and the second pump body. At the same time, open the fifth control valve and close the fourth control valve. In this way, the medium forms a cycle among the first chamber, the medium circuit and the mold;

[0042] Step A4: Close the fourth control valve and the fifth control valve, and open the seventh control valve to discharge the medium from the cycle;

[0043] Step A5: Open the fourth control valve, close the fifth control valve and the seventh control valve, and at the same time open the two first control valves so that the medium is transported to the first chamber.

[0044] The beneficial effects of the present invention are as follows:

[0045] 1. In the present invention, multiple molds share the same heat source, reducing the need to configure independent heating devices for each mold, thereby reducing the equipment procurement cost and energy consumption.

[0046] 2. In the present invention, a multi-layer chamber design is adopted. The first chamber and the second chamber are respectively equipped with heating components, allowing for hierarchical heating and temperature adjustment of the medium, which helps to improve the temperature stability and uniformity of the medium and reduce the risk of local overheating.

[0047] 3. In the present invention, a closed medium circulation system is formed through the distribution box and the medium circuit, reducing the dependence on the environment and the risk of external pollution. In addition, the safety is also improved because the liquid medium has a large heat capacity and is not easily overheated during the heat transfer process. Description of the Drawings

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still falls within the scope of the present invention.

[0049] Figure 1 Schematic diagram of a multi-mold temperature integrated control device in the present invention;

[0050] Figure 2 Partial schematic diagram of a multi-mold temperature integrated control device in the present invention;

[0051] Figure 3 Flow schematic of a control method for a multi-mold temperature integrated control device in the present invention Figure 1 ;

[0052] Figure 4 Flow schematic of a control method for a multi-mold temperature integrated control device in the present invention Figure 2 ;

[0053] Figure 5 Flow schematic of a control method for a multi-mold temperature integrated control device in the present invention Figure 3 ;

[0054] Figure 6 Flow schematic of a control method for a multi-mold temperature integrated control device in the present invention Figure 4 。 Detailed implementation manners

[0055] The following description provides specific application scenarios and requirements of this specification, aiming to enable those skilled in the art to manufacture and use the content in this specification. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the illustrated embodiments, but covers the broadest scope consistent with the claims.

[0056] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0057] Secondly, terms such as "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components, and should not be understood as a limitation to the embodiments of the present application.

[0058] In addition, terms such as "installed", "set up", "provided with", "connected", "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements or components.

[0059] For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0060] The flowcharts used in the present application illustrate the operations implemented by the system according to some embodiments in this specification. It should be clearly understood that the operations in the flowchart may not be implemented in sequence. On the contrary, the operations can be implemented in reverse order or simultaneously. In addition, one or more other operations can be added to the flowchart. One or more operations can be removed from the flowchart.

[0061] Regarding the drawings of the present application, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0062] In the prior art, the heating unit usually relies on heating rods to heat the mold at fixed points. This method has limitations when dealing with complex mold structures, is prone to local overheating, and thus poses safety hazards. In addition, this method usually can only control the temperature of a single mold. In a mass production environment, heating devices need to be configured separately for each mold, which significantly increases the production cost.

[0063] Based on this problem, as Figure 1 And Figure 2As shown, this specification provides a multi-mold temperature integrated control device, including a control system, a box body 1, a first heating component 2, a second heating component 3, a third heating component 4, a medium circuit, and a medium replenishment pipeline 60. A first chamber 100, a second chamber 101, and a third chamber 102 are arranged in the box body 1. The first chamber 100, the second chamber 101, and the third chamber 102 are arranged in sequence from bottom to top. A first conveying pipeline 103 is arranged between the lower part of the third chamber 102 and the upper part of the second chamber 101. A second conveying pipeline 104 is arranged between the lower part of the second chamber 101 and the upper part of the first chamber 100. First control valves 105 are arranged on both the first conveying pipeline 103 and the second conveying pipeline 104. Among them, both the first conveying pipeline 103 and the second conveying pipeline 104 can adopt three-way pipes, and the two first control valves 105 are respectively arranged at one end of the three-way pipe close to the second chamber 101. With such an arrangement, when the first control valve 105 on the first conveying pipeline 103 is opened, the medium in the third chamber 102 can be conveyed into the second chamber 101. When the first control valve 105 on the second conveying pipeline 104 is opened, the medium in the second chamber 101 can be conveyed into the first chamber 100.

[0064] In some embodiments, the medium circuit includes a medium outlet pipeline 50, a first pump body 51, a distribution box 52, a second pump body 53, and a medium return pipeline 54. A fourth chamber 520 and a fifth chamber 521 are arranged in the distribution box 52. The fourth chamber 520 is provided with a number of output pipes, and the output pipes are connected to the molds. The fifth chamber 521 is provided with a number of return pipes, and the return pipes are connected to the molds, that is, they are communicated with the heating channels of the molds through the output pipes and the return pipes. One end of the medium outlet pipeline 50 is connected to the lower part of the first chamber 100, and the other end is connected to the fourth chamber 520. One end of the medium return pipeline 54 is connected to the fifth chamber 521, and the other end is connected to the third chamber 102. The first pump body 51 is arranged on the medium outlet pipeline 50, and the second pump body 53 is arranged on the medium return pipeline 54. With such an arrangement, after starting the first pump body 51 and the second pump body 53, the medium forms a cycle along the sequence of the first chamber 100, the medium outlet pipeline 50, the fourth chamber 520, the output pipes, the molds, the return pipes, the fifth chamber 521, the medium return pipeline 54, and the third chamber 102 through the medium circuit, so as to realize heating for the molds.

[0065] Among them, the number of output pipes is equal to that of the return pipes, and the distribution box 52 can adopt a pipeline with one input and multiple outputs.

[0066] Secondly, one end of the medium replenishment pipeline 60 is connected to the third chamber 102, and the other end is for external connection. With this setting, just by opening the two first control valves 105, the first chamber 100, the second chamber 101, and the third chamber 102 can be replenished with medium through the medium replenishment pipeline 60.

[0067] In this specification, three connecting pipes 61 are provided on the medium replenishment pipeline 60 and are respectively connected to the upper parts of the first chamber 100, the second chamber 101, and the third chamber 102. Second control valves 62 are provided on all three connecting pipes 61. One end of the medium replenishment pipeline 60 is for external connection. With this setting, each chamber can be replenished with medium separately, greatly improving the efficiency of replenishing the medium. In addition, when it is necessary to reduce the temperature of the medium, a certain amount of low-temperature or normal-temperature medium can be separately mixed into any one of the chambers to quickly achieve temperature reduction.

[0068] In some embodiments, the first heating assembly 2 is used to heat the medium in the first chamber 100, the second heating assembly 3 is used to heat the medium in the second chamber 101, and the third heating assembly 4 is used to heat the medium in the third chamber 102. For the specific structure of the heating assembly, refer to the heating structure with excellent heating effect in the existing heating water tank, and generally a heating plate arranged at the bottom of the chamber is selected. Among them, when the temperature of the medium in the third chamber 102 is lower than a certain value, the third heating assembly 4 is started, generally when it is lower than half of the temperature of the medium in the first chamber 100 or the second chamber 101.

[0069] In some embodiments, a first temperature detector, a second temperature detector, a third temperature detector, a fourth temperature detector, and a fifth temperature detector corresponding to the first chamber 100, the second chamber 101, the third chamber 102, the fourth chamber 520, and the fifth chamber 521 are further included to respectively detect the temperature of the medium in the corresponding chambers. A sixth temperature detector is provided in each mold to detect the temperature of the medium in the mold. A seventh temperature detector is provided at one end of the medium return pipeline 54 close to the third chamber 102. Each temperature detector is connected to the control system, and preferably a high-precision temperature detection device. Secondly, a temperature sensor for detecting the ambient temperature is further included, and it is also connected to the control system.

[0070] In some embodiments, the volume of the third chamber 102 is not less than the volume of the first chamber 100.

[0071] In some embodiments, the medium return pipeline 54 is further connected to the first chamber 100, and a fourth control valve is provided on the pipeline connecting it to the third chamber 102, and a fifth control valve is provided on the pipeline connecting it to the first chamber 100. Of course, a three-way valve can also be used to achieve this.

[0072] Secondly, discharge pipelines are provided on the medium outlet pipeline 50 downstream of the first pump body 51 and on the medium return pipeline 54 downstream of the second pump body 53. A sixth control valve and a seventh control valve are respectively provided on the two discharge pipelines. Through the discharge pipelines, the medium in the water addition tank, the medium circuit and the mold can be effectively discharged. Among them, the discharge pipeline on the medium return pipeline 54 must be provided, and the discharge pipeline on the medium outlet pipeline 50 can increase the discharge efficiency.

[0073] Optionally, a third conveying pipeline 106 is provided between the first conveying pipeline 103 and the second conveying pipeline 104. A third control valve 107 is provided on the third conveying pipeline 106. When the third control valve 107 is opened, the third chamber 102 is communicated with the first chamber 100. When it is necessary to reduce the temperature of the medium in the first chamber 100, the third control valve 107 can be opened, and the two first control valves 105 are closed, so that the relatively low-temperature medium in the third chamber 102 is mixed into the high-temperature medium in the first chamber 100 to improve the cooling efficiency.

[0074] It can be understood that each control valve is preferably a remotely controlled valve, such as a solenoid valve, an electric valve, a pneumatic valve, etc.

[0075] In summary, through the integrated design, the multi-mold temperature integrated control device integrates the heating requirements of multiple molds into one device, realizing efficient and uniform temperature control, thereby solving the problems of local overheating, low efficiency, poor safety and high cost of traditional heating units. Through the multi-chamber hierarchical heating and independent temperature control system, the accuracy and flexibility of temperature adjustment are improved, ensuring the temperature stability and uniformity of the mold under complex structures. Secondly, the closed-loop circulation system and the automatic medium replenishment function improve the safety and convenience of operation, reducing energy consumption and maintenance costs. In addition, its modular and expandable design enables the system to adapt to production requirements of different scales, quickly respond to temperature changes, and significantly improve production efficiency and product quality.

[0076] In some embodiments, as Figures 3 to 6 shown, this specification provides a control method applied to the multi-mold temperature integrated control device described in Embodiment 1, including the following steps:

[0077] Step S1: Under standard atmospheric pressure, set the required temperature of the mold as T. Select the medium according to T. When T ≤ 95°C, the medium is water. Connect the molds to the medium circuit;

[0078] Step S2: Open each first control valve 105, and replenish the medium to the first chamber 100, the second chamber 101 and the third chamber 102 to the preset liquid level through the medium replenishing pipeline 60, and close each first control valve 105 after replenishment; in addition, each second control valve 62 can also be opened, and the medium can be replenished to the first chamber 100, the second chamber 101 and the third chamber 102 to the preset liquid level through the medium replenishing pipeline 60. Generally, only the first chamber 100 and the second chamber 101 need to be filled with the medium. At this time, the fourth control valve is opened, and the fifth control valve, the sixth control valve and the seventh control valve are closed;

[0079] Step S3: Start the first heating component 2 so that the temperature of the medium in the first chamber 100 is heated to ;

[0080] Step S4: Start the first pump body 51 and the second pump body 53, form a medium circulation through the medium loop, and then use the first temperature detector and the sixth temperature detector to detect the temperature of the corresponding position, respectively , and use the temperature sensor to detect the ambient temperature in real time , among which, It is necessary to wait for the cycle to stabilize and reach thermal equilibrium before measuring. The temperature change rate is lower than the threshold. The general threshold selection range is Every minute to per minute; measured At the same time, the temperature sensor measures the reference ambient temperature ;

[0081] In addition, other temperature detectors can measure the corresponding temperature as ;

[0082] Step S5: Calculate temperature loss , About temperature loss , the impact of ambient temperature changes needs to be considered and a compensation coefficient is introduced Used to adjust the impact of ambient temperature and calculate the temperature loss after compensation: , and find Average value of mold temperature loss:

[0083] ;

[0084] Among them, the compensation coefficient Initial value of Through simulation results extraction or historical data analysis, the subsequent Compare with the actual temperature loss and record the error , if the error continues to increase or decrease within a certain range, adjust the compensation coefficient , using the linear adjustment method:​​ , is the adjustment coefficient, which can be optimized through experiments or historical data. is the average error:

[0085] ;

[0086] Step S6: Close the first pump body 51 and the second pump body 53, start the second heating component 3, and through the second heating component 3, heat the medium in the second chamber 101 to , and at the same time, through the first heating component 2, heat the medium in the first chamber 100 to . After the heating is completed, start the first pump body 51 and the second pump body 53 to form a medium circulation through the medium circuit, and then detect the temperatures at the corresponding positions with the first temperature detector and the sixth temperature detector, which are respectively , for real-time monitoring; in addition, other temperature detectors can measure the corresponding temperature as ;

[0087] Step S7: Judge whether holds, where is set according to the mold processing requirements, and the general range is 1°C to 5°C; if it holds, the first heating component 2 and the second heating component 3 maintain the temperatures of the media in the first chamber 100 and the second chamber 101. If it does not hold, then calculate the error , and through the second heating component 3, heat the medium in the second chamber 101 to , and at the same time, through the first heating component 2, heat the medium in the first chamber 100 to .

[0088] Based on the above method, in order to further improve the accuracy and efficiency of temperature control, in step S7, it further includes:

[0089] Step S71: If it is judged that is not within the range, calculate the error , and at the same time introduce the PID control algorithm to optimize the control signal for real-time adjustment of the output power of the heating component. The algorithm is as follows:

[0090]

[0091] where is the proportional gain, controlling the response speed of the current error ;

[0092] is the integral gain, controlling the influence on the error accumulation and used to eliminate the steady-state error;

[0093] is the differential gain, which controls the response to the rate of change of the error, is used to predict future error changes, and increases system stability;

[0094] is the integral of the error, which is used to accumulate the error to reduce the long-term steady-state error;

[0095] is the derivative of the error, which is used to predict the trend of error changes and improve the response speed;

[0096] Step S72: Dynamically adjust the PID gain parameters through a machine learning model , to reduce the influence of the ambient temperature;

[0097] Specifically, it includes the following steps:

[0098] Step S721: Collect system operation data, and collect including , set a fixed time interval to update the data set;

[0099] Step S722: Data preprocessing, first clean the data, handle missing values and outliers, and then standardize or normalize the data for easy model processing;

[0100] Step S723: Model training and validation, select models such as random forest, neural network, etc., use the historical data set to train the model, and then use cross-validation to evaluate the model performance;

[0101] Step S724: Adjust parameters in real time, establish a feature vector:

[0102] ,

[0103] Then predict the PID parameters: ;

[0104] Step S725: Update the PID gain parameters in real time, .

[0105] In some embodiments, when it is necessary to reduce the temperature of the medium in the first chamber 100, it includes the following steps:

[0106] Step A1: Adjust the first heating component 2 to the required power in advance. The second heating component 3 can be turned off or the power can be reduced. At the same time, open the first control valve 105 on the first delivery pipeline 103 and close the first control valve 105 on the second delivery pipeline 104, so that the medium in the first chamber 100 is delivered into the third chamber 102. When the medium in the first chamber 100 reaches the predetermined liquid level, first turn off the first pump body 51, and then turn off the second pump body 53 after a certain period of time. In this way, the medium in the mold can be discharged as much as possible. After the medium at the predetermined liquid level is replenished with a predetermined amount and a predetermined temperature of medium in the first chamber 100, the overall temperature will be reduced to the required temperature;

[0107] Step A2: Open the second control valve 62 close to the first chamber 100, and at the same time replenish a predetermined amount and a predetermined temperature of medium into the first chamber 100 through the medium replenishment pipeline 60, so that the temperature of the medium in the first chamber 100 is reduced to the required temperature. After the replenishment is completed, close this second control valve 62;

[0108] Step A3: Start the first pump body 51 and the second pump body 53, and at the same time open the fifth control valve and close the fourth control valve. In this way, the medium forms a cycle among the first chamber 100, the medium circuit and the mold;

[0109] Step A4: Close the fourth control valve and the fifth control valve, and open the seventh control valve to discharge the medium from the cycle;

[0110] Step A5: Open the fourth control valve, close the fifth control valve and the seventh control valve, and at the same time open the two first control valves 105, so that the medium is delivered into the first chamber 100. Since the medium in the second chamber 101 and the third chamber 102 is at a high temperature, the energy consumption required for reheating can be reduced.

[0111] It should be understood that if in Step A1, all the medium in the first chamber 100 is delivered into the third chamber 102, then the medium circuit is connected to the cooling channels of the mold, and then in Step A2, the medium at the required temperature is replenished into the first chamber 100 through the medium replenishment pipeline 60, it can be used for cooling circulation. In this way, one machine can be used for multiple purposes and the applicable range is wider.

[0112] In some embodiments, when the medium in the first chamber 100 is less than one-half, the first control valve 105 between the first chamber 100 and the second chamber 101 is opened to replenish the medium in the second chamber 101 into the first chamber 100. When the medium in the second chamber 101 is less than one-half, the first control valve 105 between the second chamber 101 and the third chamber 102 is opened to replenish the medium in the third chamber 102 into the second chamber 101, so as to effectively maintain the circulation of the medium.

[0113] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, those skilled in the art can understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0114] In addition, it should be understood that in the foregoing description of the embodiments of this application, for the purpose of helping to understand a feature and for the purpose of simplifying this application, this application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. When reading this application, those skilled in the art are entirely likely to mark out some of the devices as separate embodiments for understanding. That is to say, the embodiments in this application can also be understood as the integration of multiple sub-embodiments. And it is also valid when the content of each sub-embodiment is less than all the features of a single foregoing disclosed embodiment.

[0115] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed in this application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in this application to implement the application in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. Multi-mold temperature integrated control device, characterized in that: It includes a control system, a box, a first heating component, a second heating component, a medium circuit and a medium replenishing pipeline. The box is provided with a first chamber, a second chamber and a third chamber. The first chamber, the second chamber and the third chamber are arranged in sequence from bottom to top. A first delivery pipeline is arranged between the lower part of the third chamber and the upper part of the second chamber. A second delivery pipeline is arranged between the lower part of the second chamber and the upper part of the first chamber. Both the first delivery pipeline and the second delivery pipeline are provided with a first control valve. The medium circuit includes an outlet medium pipeline, a first pump body, a distribution box, a second pump body and a return medium pipeline. A fourth chamber and a fifth chamber are arranged in the distribution box. The fourth chamber is provided with a plurality of output pipes, which are connected to the mold. The fifth chamber is provided with a plurality of return pipes, which are connected to the mold. One end of the outlet medium pipeline is connected to the lower part of the first chamber, and the other end is connected to the fourth chamber. One end of the return medium pipeline is connected to the fifth chamber, and the other end is connected to the third chamber. The first pump body is arranged on the outlet medium pipeline, and the second pump body is arranged on the return medium pipeline. One end of the medium replenishing pipeline is connected to the third chamber, and the other end is used for external connection; The first heating assembly is used to heat the medium in the first chamber, and the second heating assembly is used to heat the medium in the second chamber; The first chamber is provided with a first temperature detector for detecting the temperature of the medium therein, and each mold is provided with a sixth temperature detector.

2. The multi-mold temperature integrated control device according to claim 1, characterized in that: A third delivery pipeline is provided between the first delivery pipeline and the second delivery pipeline, and a third control valve is provided on the third delivery pipeline. When the third control valve is opened, the third chamber is communicated with the first chamber.

3. The multi-mold temperature integrated control device according to claim 1, characterized in that: The medium replenishment pipeline is provided with three connecting pipes and is respectively connected to the upper part of the first chamber, the second chamber and the third chamber. The three connecting pipes are all provided with a second control valve. One end of the medium replenishment pipeline is used for external connection.

4. The multi-mold temperature integrated control device according to claim 1, characterized in that: Also included is a third heating assembly, which is used to heat the medium in the third chamber.

5. The multi-mold temperature integrated control device according to claim 4, characterized in that: It also includes a second temperature detector, a third temperature detector, a fourth temperature detector and a fifth temperature detector arranged corresponding to the second chamber, the third chamber, the fourth chamber and the fifth chamber, and a seventh temperature detector is arranged on one end of the return medium pipeline close to the third chamber.

6. The multi-mold temperature integrated control device according to claim 3, characterized in that: The volume of the third chamber is not less than the volume of the first chamber, the return medium pipeline is also connected to the first chamber, and a fourth control valve is provided on the pipeline connected to the third chamber, and a fifth control valve is provided on the pipeline connected to the first chamber; A discharge pipeline is arranged on the medium outlet pipeline downstream of the first pump body and on the medium return pipeline downstream of the second pump body. A sixth control valve and a seventh control valve are arranged on the two discharge pipelines respectively.

7. A control method applied to a multi-mold temperature integrated control device as claimed in any one of claims 1 to 6, characterized in that: The steps include: Step S1: Under standard pressure, set the required temperature of the mold to T, select the medium according to T, T≤ 95℃, the medium is water, Each mold is connected to the medium circuit; Step S2: Open each first control valve, replenish medium to each chamber to a preset liquid level through the medium replenishing pipeline, and close each first control valve after replenishment; Step S3: Start the first heating component to heat the medium in the first chamber to ; Step S4: Start the first pump body and the second pump body to form a medium circulation through the medium loop, and then use the first temperature detector and the sixth temperature detector to detect the temperature of the corresponding position, which are respectively , and the ambient temperature is detected in real time through the temperature sensor ,in, Wait until the cycle is stable and reaches thermal equilibrium before measuring, and the temperature change rate is lower than the threshold; At the same time, the temperature sensor measures the reference ambient temperature ; Step S5: Calculate temperature loss , about temperature loss , introduce a compensation coefficient Used to adjust the influence of ambient temperature and calculate the temperature loss after compensation: , and obtain Average value of die temperature loss: ； Among them, the compensation coefficient The initial value of Through simulation results extraction or historical data analysis, the subsequent Compare with the actual temperature loss and record the error If the error continues to increase or decrease within a certain range, adjust the compensation coefficient , using the linear adjustment method: , is the adjustment factor, is the average error; Step S6: close the first pump body and the second pump body, start the second heating component, and heat the temperature of the medium in the second chamber to At the same time, the temperature of the medium in the first chamber is heated to After the heating is completed, the first pump body and the second pump body are started to form a medium circulation through the medium circuit, and then the temperature of the corresponding position is detected by the first temperature detector and the sixth temperature detector, which are respectively , conduct real-time monitoring; Step S7: Determination Is it established, among which, Set according to mold processing requirements; if established, the first heating component and the second heating component maintain the temperature of the medium in the first chamber and the second chamber; if not established, the error is calculated , through the second heating component, the temperature of the medium in the second chamber is heated to At the same time, the temperature of the medium in the first chamber is heated to .

8. The control method according to claim 7, characterized in that: In step S7, the following steps are included: Step S71: If it is determined Not within the range, calculation error , and introduce PID control algorithm to optimize the control signal , used to adjust the output power of the heating component in real time, the algorithm is as follows: in, is the gain parameter; Step S72: Dynamically adjust PID gain parameters through machine learning model , used to reduce the impact of ambient temperature.

9. The control method according to claim 8, characterized in that: In step S72, the following steps are included: Step S721: Collect system operation data, including , set a fixed time interval to update the dataset; Step S722: Data preprocessing, first cleaning the data, processing missing values ​​and outliers, and then standardizing or normalizing the data to facilitate model processing; Step S723: Model training and validation, select a model, train the model using historical data sets, and then use cross-validation to evaluate model performance; Step S724: Adjust parameters in real time and establish feature vectors: ， Then predict the PID parameters: ; Step S725: Update PID gain parameters in real time. .

10. The control method applied to the multi-mold temperature integrated control device according to claim 6, characterized in that: When the temperature of the medium in the first chamber needs to be lowered, the following steps are included: Step A1: Adjust the first heating component to the required power in advance, open the first control valve on the first delivery pipeline and close the first control valve on the second delivery pipeline, so that the medium in the first chamber is delivered to the third chamber. When the medium in the first chamber reaches a predetermined liquid level, close the first pump body first, and then close the second pump body after a certain period of time; Step A2: opening the second control valve close to the first chamber, and simultaneously replenishing a predetermined amount of medium at a predetermined temperature into the first chamber through the medium replenishment pipeline, so that the temperature of the medium in the first chamber is reduced to a required temperature, and closing the second control valve after replenishment is completed; Step A3: Start the first pump body and the second pump body, open the fifth control valve and close the fourth control valve at the same time, so that the medium circulates between the first chamber, the medium circuit and the mold; Step A4: close the fourth control valve and the fifth control valve, open the seventh control valve, and discharge the medium from the circulation; Step A5: Open the fourth control valve, close the fifth control valve and the seventh control valve, and simultaneously open the two first control valves to allow the medium to be delivered to the first chamber.

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