A method, system, equipment and medium for controlling die casting temperature of a die casting mold

Abstract

The present application relates to a method, system, equipment and medium for controlling the die-casting temperature of a die-casting mold, the method comprising obtaining die-casting data of the die to be die-casted, analyzing the die-casting temperature and temperature cycle time required for each die-casting step according to the die-casting data, obtaining the die-casting weight and molten metal temperature of the die to be die-casted, analyzing the mold forming surface area and the forming surface temperature, adjusting the cooling amount of the corresponding mold according to the analysis result, adjusting the die-casting temperature and temperature cycle time of the corresponding mold part according to the cooling amount adjustment result, and obtaining the mold temperature change after each temperature cycle, constructing a temperature displacement relationship between the mold and the coolant, and adjusting the cooling temperature of the coolant that reaches the temperature equilibrium state according to the temperature displacement relationship, and obtaining the die-casting temperature control data during the die-casting process of the mold. The present application has the effect of improving the accuracy of die-casting temperature control of the die-casting mold.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting temperature control, and in particular to a die-casting temperature control method, system, equipment and medium for a die-casting mold. Background Art

[0002] At present, with the continuous improvement of the die-casting process level, higher requirements are also put forward for the temperature control of the mold during the die-casting process. Stable mold temperature is an important factor in ensuring the stability of the mold's external dimensions and internal quality. Therefore, it is necessary to reasonably control the die-casting temperature during the die-casting process.

[0003] The existing die-casting temperature control method of the die-casting mold is usually that the operator manually adjusts the control parameters of the mold temperature machine according to experience and practice, or sets the required temperature for die-casting of the mold by using a temperature controller and related instruments, and automatically adjusts the die-casting temperature according to the set program through the instrument. However, it is often limited by the subjective influence of the operator and the accuracy of the instrument, and as the use time increases, the response speed of the temperature control instrument will gradually decrease, resulting in a mismatch between the die-casting temperature during the die-casting process and the actual die-casting requirements, affecting the die-casting effect of the mold. Summary of the invention

[0004] In order to improve the accuracy of die-casting temperature control of a die-casting mold, the present application provides a die-casting temperature control method, system, equipment and medium for a die-casting mold.

[0005] In the first aspect, the above-mentioned invention objective of the present application is achieved through the following technical solutions:

[0006] A method for controlling the die-casting temperature of a die-casting mold, comprising:

[0007] Acquire die casting data of the die to be die cast, and analyze the die casting temperature and temperature cycle time required for each die casting step according to the die casting data;

[0008] Obtain the mold shot weight and molten metal temperature of the die to be cast, analyze the mold forming surface area and the molding surface temperature, and adjust the cooling amount of the corresponding mold according to the analysis results;

[0009] According to the cooling amount adjustment result, the die casting temperature and temperature cycle time of the corresponding mold part are adjusted, and the mold temperature change after each temperature cycle is obtained to establish the temperature replacement relationship between the mold and the coolant;

[0010] According to the temperature replacement relationship, the cooling temperature of the coolant that has reached the temperature equilibrium state is adjusted to obtain the die-casting temperature control data during the die-casting process of the mold.

[0011] In a preferred example, the present application can be further configured as follows: the step of obtaining the mold shot weight and molten metal temperature of the die to be die-cast, analyzing the mold forming surface area and the molding surface temperature, and adjusting the cooling amount of the corresponding mold according to the analysis result specifically includes:

[0012] The mold cooling amount is calculated by formula (2), which is as follows:

[0013]

[0014] Among them, Q 冷 It indicates the cooling amount of the mold in each temperature cycle after die casting, M indicates the mold shot weight during molten material die casting, N indicates the number of shots in each temperature cycle, C 金 Indicates the specific heat of the current die-cast metal, which is determined according to the material of different metals. Indicates the die casting safety factor.

[0015] In a preferred example, the present application can be further configured as follows: according to the cooling amount adjustment result, the die casting temperature and temperature cycle time of the corresponding mold part are adjusted, and the mold temperature change after each temperature cycle is obtained, and the temperature replacement relationship between the mold and the coolant is established, which specifically includes:

[0016] The heat dissipation of the mold during each temperature cycle is calculated by formula (3), and the temperature displacement relationship between the mold and the coolant is established according to the heat dissipation of the mold and the corresponding number of temperature cycles. Formula (3) is as follows:

[0017] Q t =A*Δθ*δ (3)

[0018] Among them, Q t It represents the heat dissipation of the mold at a single time, A represents the surface area of ​​the molding mold, Δθ represents the temperature difference between the mold temperature and the coolant temperature, and δ represents the heat dissipation coefficient of the molding mold of the current material.

[0019] By adopting the above technical scheme, the die-casting temperature and temperature cycle time required for each die-casting step are analyzed through the die-casting data of different die-casting molds, which helps to adjust the corresponding die-casting temperature according to the actual die-casting requirements of each mold, and analyze the mold molding surface area and molding surface temperature in combination with the mold injection weight and the molten metal temperature. The corresponding mold cooling amount is calculated by the mold surface area and the corresponding surface temperature, which helps to improve the calculation accuracy of the mold surface cooling amount, and the die-casting temperature and temperature cycle time of the corresponding mold part are adjusted accordingly according to the cooling amount adjustment result, so that the cooling temperature adjustment is adapted to the change of the mold surface temperature, and the mold surface temperature changes evenly, and the cooling temperature of the coolant that reaches the temperature equilibrium state is adjusted according to the temperature substitution relationship, and the cooling temperature of the coolant is adjusted in real time according to the change of the mold temperature, so as to improve the fit between the die-casting step and the cooling temperature of the corresponding step, thereby improving the die-casting temperature control accuracy of the die-casting mold.

[0020] In a preferred example, the present application can be further configured as follows: according to the temperature replacement relationship, the cooling temperature of the coolant that has reached the temperature equilibrium state is adjusted to obtain the die-casting temperature control data during the die-casting process of the mold, specifically including:

[0021] Obtaining the die-casting interval time between adjacent die-casting steps of the die to be die-cast, preheating the coolant during the die-casting interval time, and adjusting the current coolant temperature to the die preheating temperature;

[0022] When the temperature of the die-casting working area reaches the mold preheating temperature, the molten metal is controlled to be injected to carry out the die-casting work of the next die-casting step. When the molten metal injection is completed, the current coolant temperature is cooled down;

[0023] According to the temperature replacement relationship, the mold replacement heat corresponding to each cooling cycle is obtained, and the cooling rate of the current coolant is controlled according to the mold replacement heat to obtain the die-casting temperature control data of the mold.

[0024] In a preferred example, the present application can be further configured as follows: according to the temperature replacement relationship, the mold replacement heat corresponding to each cooling cycle is obtained, and the cooling rate of the current coolant is controlled according to the mold replacement heat to obtain the die casting temperature control data of the mold, specifically including:

[0025] The mold replacement heat corresponding to each cooling cycle is calculated by formula (1), which is as follows:

[0026]

[0027] Among them, Q 降 represents the mold replacement heat corresponding to each cooling cycle, f represents the cooling equipment operating frequency under the current cooling cycle, m模 、m 液 are the weight of the molding die and the weight of the coolant, respectively, e , C f represents the specific heat of mold and coolant, Q 液 , Q 铸 Respectively represent the die casting temperature and coolant circulation temperature, ρ Q represents the heat volatilization coefficient of the coolant, and t represents the cooling cycle time.

[0028] By adopting the above technical scheme, the coolant is preheated within the adjacent die-casting interval time range of adjacent die-casting steps, so that the next die-casting step can reach the expected die-casting preheating temperature, which is helpful to improve the die-casting quality. When the temperature of the die-casting working area reaches the mold preheating temperature, the molten metal is controlled to be injected into the next die-casting mold for die-casting. When the molten metal completes the material injection, the cooling temperature of the current coolant is adjusted in time to cool the molten metal material. The coolant temperature is controlled according to the temperature displacement relationship to uniformly cool the molten metal material. Combined with the mold displacement heat of each cooling cycle, the cooling rate of the current coolant is controlled to reduce the stress accumulation in the metal forming process caused by the sudden change of cooling temperature, thereby improving the mold forming quality.

[0029] In the second aspect, the above invention objective of the present application is achieved through the following technical solutions:

[0030] A die-casting temperature control system for a die-casting mold, comprising:

[0031] A data acquisition module, used for acquiring die casting data of the die to be die cast, and analyzing the die casting temperature and temperature cycle time required for each die casting step according to the die casting data;

[0032] A data adjustment module is used to obtain the mold shot weight and molten metal temperature of the die to be die-cast, analyze the mold forming surface area and the molding surface temperature, and adjust the cooling amount of the corresponding mold according to the analysis results;

[0033] The data analysis module is used to adjust the die-casting temperature and temperature cycle time of the corresponding mold parts according to the cooling amount adjustment results, obtain the mold temperature change after each temperature cycle, and build the temperature replacement relationship between the mold and the coolant;

[0034] The temperature control module is used to adjust the cooling temperature of the coolant that has reached a temperature equilibrium state according to the temperature replacement relationship, and obtain die-casting temperature control data during the die-casting process of the mold.

[0035] By adopting the above technical scheme, the die-casting temperature and temperature cycle time required for each die-casting step are analyzed through the die-casting data of different die-casting molds, which helps to adjust the corresponding die-casting temperature according to the actual die-casting requirements of each mold, and analyze the mold molding surface area and molding surface temperature in combination with the mold injection weight and the molten metal temperature. The corresponding mold cooling amount is calculated by the mold surface area and the corresponding surface temperature, which helps to improve the calculation accuracy of the mold surface cooling amount, and the die-casting temperature and temperature cycle time of the corresponding mold part are adjusted accordingly according to the cooling amount adjustment result, so that the cooling temperature adjustment is adapted to the change of the mold surface temperature, and the mold surface temperature changes evenly, and the cooling temperature of the coolant that reaches the temperature equilibrium state is adjusted according to the temperature substitution relationship, and the cooling temperature of the coolant is adjusted in real time according to the change of the mold temperature, so as to improve the fit between the die-casting step and the cooling temperature of the corresponding step, thereby improving the die-casting temperature control accuracy of the die-casting mold.

[0036] On the third aspect, the above-mentioned purpose of the present application is achieved through the following technical solutions:

[0037] A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the die-casting temperature control method of the die-casting mold when executing the computer program.

[0038] Fourthly, the above-mentioned purpose of the present application is achieved through the following technical solutions:

[0039] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the die-casting temperature control method of the die-casting mold are implemented.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. Analyze the die-casting temperature and temperature cycle time required for each die-casting step through the die-casting data of different die-casting molds, which is helpful to adjust the corresponding die-casting temperature according to the actual die-casting requirements of each mold, and analyze the mold molding surface area and molding surface temperature in combination with the mold injection weight and molten metal temperature. Calculate the corresponding mold cooling amount through the mold surface area and the corresponding surface temperature, which is helpful to improve the calculation accuracy of the mold surface cooling amount. According to the cooling amount adjustment result, adjust the die-casting temperature and temperature cycle time of the corresponding mold part accordingly, so that the cooling temperature adjustment is adapted to the change of the mold surface temperature, so that the mold surface temperature changes evenly, and adjust the cooling temperature of the coolant that reaches the temperature equilibrium state according to the temperature substitution relationship, adjust the cooling temperature of the coolant in real time according to the change of the mold temperature, improve the fit between the die-casting step and the cooling temperature of the corresponding step, and thus improve the die-casting temperature control accuracy of the die-casting mold;

[0042] 2. Within the interval time range of adjacent die-casting steps, the coolant is preheated so that the next die-casting step can reach the expected die-casting preheating temperature, which is helpful to improve the die-casting quality. When the temperature of the die-casting working area reaches the mold preheating temperature, the molten metal is controlled to be injected into the next die-casting mold for die-casting. When the molten metal completes the material injection, the cooling temperature of the current coolant is adjusted in time to cool the molten metal material and cool it down at a uniform rate according to the temperature replacement relationship. Combined with the mold replacement heat of each cooling cycle, the cooling rate of the current coolant is controlled to reduce the stress accumulation in the metal forming process caused by the sudden change of cooling temperature and improve the mold forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a flow chart of an implementation method of a die-casting temperature control method for a die-casting mold in this embodiment.

[0044] Figure 2 This is a flow chart for implementing step S40 of a method for controlling the die-casting temperature of a die-casting mold in this embodiment.

[0045] Figure 3 It is a structural block diagram of a die-casting temperature control system of a die-casting mold in this embodiment.

[0046] Figure 4 It is a schematic diagram of the internal structure of a computer device for implementing a die-casting temperature control method for a die-casting mold. DETAILED DESCRIPTION

[0047] The present application is further described in detail below in conjunction with the accompanying drawings.

[0048] In one embodiment, if Figure 1As shown, the present application discloses a method for controlling the die-casting temperature of a die-casting mold, which specifically includes the following steps:

[0049] S10: Obtain die casting data of the die to be die cast, and analyze the die casting temperature and temperature cycle time required for each die casting step according to the die casting data.

[0050] Specifically, according to the differences in die-casting molds, the mold material, mold production process, and production rhythm of the current die-casting equipment of the mold to be die-cast are obtained, and the die-casting parameters of the mold are set to obtain the mold die-casting data. According to the structure of the mold or the mold die-casting drawing, each die-casting step of the mold is analyzed, and then the die-casting temperature of each die-casting step is analyzed in combination with the corresponding mold material. According to the requirements of the die-casting process, the corresponding temperature cycle time is set to achieve the die-casting temperature required for each die-casting step.

[0051] S20: obtaining the mold shot weight and molten metal temperature of the die to be die-cast, analyzing the mold forming surface area and the mold forming surface temperature, and adjusting the cooling amount of the corresponding mold according to the analysis result.

[0052] Specifically, the die shot weight is obtained by multiplying the material weight and injection efficiency when the molten metal is injected into the die casting die and the volume of the die casting die, and the molten metal temperature is obtained by a temperature detection device preset at the material injection outlet position. The surface area of ​​the die after molding is analyzed according to the size of the die casting die and the die casting process. In this embodiment, the temperature of the molten metal material when it is injected into the die casting die is used as the mold molding surface temperature, and the mold cooling amount is calculated by formula (2). Formula (2) is as follows:

[0053]

[0054] Among them, Q 冷 It indicates the cooling amount of the mold in each temperature cycle after die casting, M indicates the mold shot weight during molten material die casting, N indicates the number of shots in each temperature cycle, C 金 Indicates the specific heat of the current die-cast metal, which is determined according to the material of different metals. Indicates the die casting safety factor.

[0055] S30: According to the cooling amount adjustment result, the die casting temperature and temperature cycle time of the corresponding mold part are adjusted, and the mold temperature change after each temperature cycle is obtained to establish a temperature replacement relationship between the mold and the coolant.

[0056] Specifically, combined with the cooling amount adjustment result, within the mold temperature error range, when the cooling amount is greater than the cooling amount required for the previous cooling cycle, the die-casting temperature of the corresponding mold part is lowered by increasing the temperature cycle time. Similarly, when the cooling amount is less than the cooling amount required for the previous cooling cycle, the die-casting temperature of the corresponding mold part is increased by reducing the temperature cycle time, so that the cooling amount change in each temperature cycle is within the same fluctuation range, and the mold temperature change after each temperature cycle is obtained through a preset temperature detection device, and the mold heat dissipation during each temperature cycle is calculated, and the temperature cycle time is used as an indicator to construct a temperature substitution relationship between the mold and the coolant.

[0057] Specifically, in this embodiment, the heat dissipation of the mold during each temperature cycle is calculated by formula (3), and the temperature displacement relationship between the mold and the coolant is established according to the heat dissipation of the mold and the corresponding number of temperature cycles. Formula (3) is as follows:

[0058] Q t =A*Δθ*δ (3)

[0059] Among them, Q t It represents the heat dissipation of the mold at a single time, A represents the surface area of ​​the molding mold, Δθ represents the temperature difference between the mold temperature and the coolant temperature, and δ represents the heat dissipation coefficient of the molding mold of the current material.

[0060] S40: According to the temperature replacement relationship, the cooling temperature of the coolant that has reached the temperature equilibrium state is adjusted to obtain die-casting temperature control data during the die-casting process of the mold.

[0061] Reaching the temperature equilibrium state in this embodiment means that the surface temperature of the mold is equal to the temperature of the coolant, that is, the current coolant temperature cannot continue to perform temperature replacement work on the mold.

[0062] Specifically, Figure 2 As shown, step S40 specifically includes:

[0063] S401: Obtain the die-casting interval time between adjacent die-casting steps of the die to be die-casted, preheat the coolant during the die-casting interval time, and adjust the current coolant temperature to the mold preheating temperature.

[0064] Specifically, based on the analysis results of the die-casting steps of the die-casting mold to be die-casted, the die-casting interval time between adjacent die-casting steps of the die-casting mold to be die-casted is obtained, the temperature of the current coolant is adjusted during the die-casting interval time, and the current coolant temperature is adjusted to the preset mold preheating temperature, so as to preheat the next die-casting step.

[0065] S402: When the temperature of the die-casting working area reaches the mold preheating temperature, the molten metal is controlled to be injected to perform the die-casting work of the next die-casting step. When the molten metal injection is completed, the current coolant temperature is cooled down.

[0066] Specifically, when the temperature of the die-casting working area reaches the preset mold preheating temperature, the molten metal is controlled to be injected into the die-casting mold for the next die-casting step, thereby performing the die-casting work of the next die-casting step. When the molten metal injection is completed, the current coolant temperature is cooled down, and the molten metal in the die-casting mold is molded and cooled by cooling the coolant.

[0067] S403: According to the temperature replacement relationship, the mold replacement heat corresponding to each cooling cycle is obtained, and the cooling rate of the current coolant is controlled according to the mold replacement heat to obtain the die-casting temperature control data of the mold.

[0068] Specifically, according to the temperature replacement relationship, the corresponding mold replacement heat is calculated by formula (1) after each cooling cycle. When the mold replacement heat is high, the cooling rate of the current coolant is accelerated. When the mold replacement heat is low or close to the coolant temperature, the cooling rate of the current coolant is correspondingly reduced. The temperature change of the coolant is dynamically adjusted according to the heat replacement between the mold and the coolant, thereby obtaining the die-casting temperature control data of the mold.

[0069] In this embodiment, the mold replacement heat corresponding to each cooling cycle is calculated by formula (1), and formula (1) is as follows:

[0070]

[0071] Among them, Q 降 represents the mold replacement heat corresponding to each cooling cycle, f represents the cooling equipment operating frequency under the current cooling cycle, m 模 、m 液 are the weight of the molding die and the weight of the coolant, respectively, e , C f represents the specific heat of mold and coolant, Q 液 , Q 铸 Respectively represent the die casting temperature and coolant circulation temperature, ρ Q represents the heat volatilization coefficient of the coolant, and t represents the cooling cycle time.

[0072] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0073] In one embodiment, a die-casting temperature control system for a die-casting mold is provided, and the die-casting temperature control system for the die-casting mold corresponds one-to-one to the die-casting temperature control method for the die-casting mold in the above embodiment. Figure 3 As shown, the die-casting temperature control system of the die-casting mold includes a data acquisition module, a data adjustment module, a data analysis module and a temperature control module. The detailed description of each functional module is as follows:

[0074] The data acquisition module is used to acquire the die-casting data of the die to be die-cast, and analyze the die-casting temperature and temperature cycle time required for each die-casting step according to the die-casting data.

[0075] The data adjustment module is used to obtain the mold shot weight and molten metal temperature of the die to be die-cast, analyze the mold forming surface area and the molding surface temperature, and adjust the cooling amount of the corresponding mold according to the analysis results.

[0076] The data analysis module is used to adjust the die-casting temperature and temperature cycle time of the corresponding mold parts according to the cooling amount adjustment results, obtain the mold temperature change after each temperature cycle, and establish the temperature replacement relationship between the mold and the coolant.

[0077] The temperature control module is used to adjust the cooling temperature of the coolant that has reached a temperature equilibrium state according to the temperature displacement relationship, and obtain the die-casting temperature control data during the die-casting process of the mold.

[0078] Preferably, the temperature control module specifically includes:

[0079] The temperature preheating submodule is used to obtain the die-casting interval time between adjacent die-casting steps of the die to be die-cast, preheat the coolant during the die-casting interval time, and adjust the current coolant temperature to the mold preheating temperature.

[0080] The temperature cooling submodule is used to control the injection of molten metal to carry out the die-casting work of the next die-casting step when the temperature of the die-casting working area reaches the mold preheating temperature. When the molten metal injection is completed, the current coolant temperature is cooled down.

[0081] The temperature regulation submodule is used to obtain the mold replacement heat corresponding to each cooling cycle according to the temperature replacement relationship, control the cooling rate of the current coolant according to the mold replacement heat, and obtain the die-casting temperature control data of the mold.

[0082] Preferably, the temperature adjustment submodule specifically includes:

[0083] The mold replacement heat corresponding to each cooling cycle is calculated by formula (1), and formula (1) is as follows:

[0084]

[0085] Among them, Q 降 represents the mold replacement heat corresponding to each cooling cycle, f represents the cooling equipment operating frequency under the current cooling cycle, m 模 、m 液 are the weight of the molding die and the weight of the coolant, respectively, e , C f represents the specific heat of mold and coolant, Q 液 , Q 铸 Respectively represent the die casting temperature and coolant circulation temperature, ρ Q represents the heat volatilization coefficient of the coolant, and t represents the cooling cycle time.

[0086] Preferably, the data adjustment module specifically includes:

[0087] The mold cooling amount is calculated by formula (2), which is as follows:

[0088]

[0089] Among them, Q 冷 It indicates the cooling amount of the mold in each temperature cycle after die casting, M indicates the mold shot weight during molten material die casting, N indicates the number of shots in each temperature cycle, C 金 Indicates the specific heat of the current die-cast metal, which is determined according to the material of different metals. Indicates the die casting safety factor.

[0090] Preferably, the data analysis module specifically includes:

[0091] The data construction submodule is used to calculate the heat dissipation of the mold during each temperature cycle through formula (3), and to construct the temperature displacement relationship between the mold and the coolant according to the heat dissipation of the mold and the corresponding number of temperature cycles. Formula (3) is as follows:

[0092] Q t =A*Δθ*δ (3)

[0093] Among them, Q t It represents the heat dissipation of the mold at a single time, A represents the surface area of ​​the molding mold, Δθ represents the temperature difference between the mold temperature and the coolant temperature, and δ represents the heat dissipation coefficient of the molding mold of the current material.

[0094] For the specific definition of the die-casting temperature control system of the die-casting mold, please refer to the definition of the die-casting temperature control method of the die-casting mold above, which will not be repeated here. Each module in the die-casting temperature control system of the above-mentioned die-casting mold can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0095] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 4 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store die-casting temperature adjustment data of the die during the die-casting process. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a die-casting temperature control method for a die-casting mold is implemented.

[0096] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of a method for controlling the die-casting temperature of a die-casting mold are implemented.

[0097] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0098] Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above.

[0099] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for controlling the die casting temperature of a die casting mold, characterized in that: include: Acquire die casting data of the die to be die cast, and analyze the die casting temperature and temperature cycle time required for each die casting step according to the die casting data; Obtain the mold shot weight and molten metal temperature of the die to be cast, analyze the mold forming surface area and the molding surface temperature, and adjust the cooling amount of the corresponding mold according to the analysis results; According to the cooling amount adjustment result, the die casting temperature and temperature cycle time of the corresponding mold part are adjusted, and the mold temperature change after each temperature cycle is obtained to establish the temperature replacement relationship between the mold and the coolant; According to the temperature displacement relationship, the cooling temperature of the coolant that has reached the temperature equilibrium state is adjusted to obtain die-casting temperature control data during the die-casting process of the mold; Wherein, the cooling temperature of the coolant reaching the temperature equilibrium state is adjusted according to the temperature displacement relationship to obtain the die casting temperature control data in the die casting process of the mold, specifically including: Obtaining the die-casting interval time between adjacent die-casting steps of the die to be die-cast, preheating the coolant during the die-casting interval time, and adjusting the current coolant temperature to the mold preheating temperature; When the temperature of the die-casting working area reaches the mold preheating temperature, the molten metal is controlled to be injected to carry out the die-casting work of the next die-casting step. When the molten metal injection is completed, the current coolant temperature is cooled down; According to the temperature replacement relationship, the mold replacement heat corresponding to each cooling cycle is obtained, and the cooling rate of the current coolant is controlled according to the mold replacement heat to obtain the die-casting temperature control data of the mold; The method of obtaining the mold replacement heat corresponding to each cooling cycle according to the temperature replacement relationship, controlling the cooling rate of the current coolant according to the mold replacement heat, and obtaining the die-casting temperature control data of the mold specifically includes: The mold replacement heat corresponding to each cooling cycle is calculated by formula (1), and formula (1) is as follows: Among them, Q 降 represents the mold replacement heat corresponding to each cooling cycle, f represents the cooling equipment operating frequency under the current cooling cycle, m 模 、m 液 are the weight of the molding die and the weight of the coolant, respectively, e , C f represents the specific heat of mold and coolant, Q 液 , Q 铸 Respectively represent the die casting temperature and coolant circulation temperature, ρ Q represents the heat volatilization coefficient of the coolant, and t represents the cooling cycle time; The step of obtaining the mold shot weight and molten metal temperature of the die to be die-cast, analyzing the mold forming surface area and the mold forming surface temperature, and adjusting the cooling amount of the corresponding mold according to the analysis results specifically includes: The mold cooling amount is calculated by formula (2), which is as follows: Among them, Q 冷 It indicates the cooling amount of the mold in each temperature cycle after die casting, M indicates the mold shot weight during molten material die casting, N indicates the number of shots in each temperature cycle, C 金 Indicates the specific heat of the current die-cast metal, which is determined according to the material of different metals. Indicates the die casting safety factor; The method of adjusting the die casting temperature and temperature cycle time of the corresponding mold part according to the cooling amount adjustment result, obtaining the mold temperature change after each temperature cycle, and constructing the temperature replacement relationship between the mold and the coolant specifically includes: The heat dissipation of the mold during each temperature cycle is calculated by formula (3), and the temperature displacement relationship between the mold and the coolant is established according to the heat dissipation of the mold and the corresponding number of temperature cycles. Formula (3) is as follows: Q t =A*Δθ*δ (3) Among them, Q t It represents the heat dissipation of the mold at a single time, A represents the surface area of ​​the molding mold, Δθ represents the temperature difference between the mold temperature and the coolant temperature, and δ represents the heat dissipation coefficient of the molding mold of the current material.

2. A die-casting temperature control system for a die-casting mold, characterized in that: include: A data acquisition module, used for acquiring die casting data of the die to be die cast, and analyzing the die casting temperature and temperature cycle time required for each die casting step according to the die casting data; A data adjustment module is used to obtain the mold shot weight and molten metal temperature of the die to be die-cast, analyze the mold forming surface area and the molding surface temperature, and adjust the cooling amount of the corresponding mold according to the analysis results; The data analysis module is used to adjust the die-casting temperature and temperature cycle time of the corresponding mold parts according to the cooling amount adjustment results, obtain the mold temperature change after each temperature cycle, and build the temperature replacement relationship between the mold and the coolant; A temperature control module is used to adjust the cooling temperature of the coolant that has reached a temperature equilibrium state according to the temperature displacement relationship, and obtain die-casting temperature control data during the die-casting process of the mold; Wherein, the temperature control module specifically includes: The temperature preheating submodule is used to obtain the die-casting interval time between adjacent die-casting steps of the die to be die-casted, preheat the coolant during the die-casting interval time, and adjust the current coolant temperature to the mold preheating temperature; The temperature cooling submodule is used to control the injection of molten metal to carry out the die-casting work of the next die-casting step when the temperature of the die-casting working area reaches the mold preheating temperature. When the injection of molten metal is finished, the current coolant temperature is cooled down; The temperature adjustment submodule is used to obtain the mold replacement heat corresponding to each cooling cycle according to the temperature replacement relationship, control the cooling rate of the current coolant according to the mold replacement heat, and obtain the die-casting temperature control data of the mold; Wherein, the temperature adjustment submodule specifically includes: The mold replacement heat corresponding to each cooling cycle is calculated by formula (1), and formula (1) is as follows: Among them, Q 降 represents the mold replacement heat corresponding to each cooling cycle, f represents the cooling equipment operating frequency under the current cooling cycle, m 模 、m 液 are the weight of the molding die and the weight of the coolant, respectively, e , C f represents the specific heat of mold and coolant, Q 液 , Q 铸 Respectively represent the die casting temperature and coolant circulation temperature, ρ Q represents the heat volatilization coefficient of the coolant, and t represents the cooling cycle time; Wherein, the data adjustment module specifically includes: The mold cooling amount is calculated by formula (2), which is as follows: Among them, Q 冷 It indicates the cooling amount of the mold in each temperature cycle after die casting, M indicates the mold shot weight during molten material die casting, N indicates the number of shots in each temperature cycle, C 金 Indicates the specific heat of the current die-cast metal, which is determined according to the material of different metals. Indicates the die casting safety factor; Wherein, the data analysis module specifically includes: The data construction submodule is used to calculate the heat dissipation of the mold during each temperature cycle through formula (3), and to construct the temperature displacement relationship between the mold and the coolant according to the heat dissipation of the mold and the corresponding number of temperature cycles. Formula (3) is as follows: Q t =A*Δθ*δ (3) Among them, Q t It represents the heat dissipation of the mold at a single time, A represents the surface area of ​​the molding mold, Δθ represents the temperature difference between the mold temperature and the coolant temperature, and δ represents the heat dissipation coefficient of the molding mold of the current material.

3. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the die-casting temperature control method of the die-casting mold as claimed in claim 1 are implemented.

4. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the die-casting temperature control method of the die-casting mold as claimed in claim 1 are implemented.

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