A temperature control device and method for die casting mold

Abstract

The present invention provides a temperature control device and control method for a die-casting mold. The device determines the installation position of a temperature sensor on the die-casting mold based on the structural characteristics of the die-casting mold, and installs the temperature sensor at the installation position to ensure accurate monitoring of the mold temperature. The device determines the temperature range of each temperature sensor based on the installation position, collects temperature data of the temperature sensor and compares it with the temperature range to obtain abnormal temperature values ​​and their corresponding installation positions. Based on the abnormal temperature values ​​and their corresponding installation positions, a target temperature control method that meets the process requirements is selected from a temperature control method library. Based on the target temperature control method, control parameters are determined in combination with temperature differences. The die-casting mold is temperature-controlled according to the control parameters to achieve temperature stability and accuracy of the die-casting mold during the production of wheel hubs, thereby ensuring the stability of the mold and the quality of the wheel hubs during the production process.

Description

Technical Field

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

[0002] The wheel hub is a cylindrical metal part whose center is mounted on an axle and whose inner profile supports the tire. The die-casting mold is an indispensable tool in the wheel hub manufacturing process. It not only determines the shape and size of the wheel hub, but also directly affects its strength and performance. The forging process of the wheel hub is divided into gravity forging and low-pressure casting. Gravity forging is to pour liquid alloy into the die-casting mold and then naturally shape it, while low-pressure casting is to use low pressure to press the liquid alloy into the die-casting mold to shape it. The mold used in the low-pressure casting process can produce wheels with high metal density, high strength and complex shapes. It is currently the main method for manufacturing aluminum alloy wheels.

[0003] During the production of wheels using die-casting molds, the temperature of the die-casting mold should be maintained within a certain range to ensure the stability of the mold and the quality of the wheel during production. The stability of the mold temperature is crucial. Temperature fluctuations can lead to problems such as mold thermal cracking and product defects, affecting product consistency and the service life of the mold. The location and number of temperature sensors installed should be reasonable to ensure accurate monitoring of the mold temperature. Therefore, precise temperature control of the die-casting mold is crucial. Summary of the Invention

[0004] The present invention provides a die-casting mold temperature control device and a control method, which are used to solve the problems raised in the background technology.

[0005] A die-casting mold temperature control device, comprising:

[0006] a position determination module, configured to determine an installation position of a temperature sensor on the die-casting mold based on structural features of the die-casting mold, and to install the temperature sensor at the installation position;

[0007] The temperature acquisition module is used to determine the temperature range of each temperature sensor based on the installation location, collect the temperature data of the temperature sensor and compare it with the temperature range to obtain the abnormal temperature value and its corresponding installation location;

[0008] A method determination module is used to select a target temperature control method that meets the process requirements from a temperature control method library based on the abnormal temperature value and its corresponding installation location;

[0009] The temperature control module is used to determine the control parameters based on the target temperature control method and the temperature difference, and to control the temperature of the die-casting mold according to the control parameters.

[0010] Preferably, the location determination module includes:

[0011] A feature acquisition unit is used to obtain the mold inlet shape, runner shape, cavity shape and cooling system shape, as well as the mold inlet size, runner length, cavity surface area and cooling system size based on the structural features of the die-casting mold;

[0012] an object determination unit, configured to set an initial number of temperature sensors based on the mold inlet size, runner length, cavity surface area, and cooling system size, and to obtain temperature monitoring objects for the mold inlet, runner, cavity, and cooling system;

[0013] a weight determination unit, configured to determine a first influence weight based on a stable temperature range of the temperature monitoring object, determine a second influence weight based on an influence of the temperature monitoring object on process quality, and determine a comprehensive influence weight on the temperature monitoring object based on the first influence weight and the second influence weight;

[0014] a quantity determination unit, configured to perform weighted processing on an initial quantity of temperature sensors based on a difference between the comprehensive impact weight and the standard impact weight to obtain a target quantity;

[0015] a position determination unit, configured to determine key positions of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to distribute the positions of the temperature sensors based on the key positions and the target number to obtain the installation positions of the temperature sensors;

[0016] The installation unit is used to determine an installation method based on structural characteristics of the installation location, and install the temperature sensor at the installation location according to the installation method.

[0017] Preferably, the position determination unit includes:

[0018] a position acquisition unit, configured to determine the center position of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to search based on the center position based on the processing features of the mold inlet, runner, cavity, and cooling system to obtain a key position;

[0019] The parameter acquisition unit is used to determine the position, direction and distance based on the mold inlet shape, runner shape, cavity shape and cooling system shape, combined with the target quantity, and obtain the installation position of the temperature sensor based on the position, direction and distance, and the key position as a reference.

[0020] Preferably, the temperature acquisition module includes:

[0021] A range determination unit for setting a temperature range for each temperature sensor based on its installation location in the mold inlet, runner, cavity, and cooling system;

[0022] An acquisition unit, used to acquire the temperature of various positions of the die-casting mold based on a temperature sensor to obtain temperature data;

[0023] The comparison unit is used to compare the temperature data with the temperature range, obtain an abnormal temperature value corresponding to the temperature data not within the temperature range, and determine an installation position corresponding to the abnormal temperature value based on the temperature sensor of the abnormal temperature value.

[0024] Preferably, the method determination module includes:

[0025] a mode selection unit, configured to determine a temperature control object based on an installation position corresponding to an abnormal temperature value, and select a primary temperature control mode that satisfies the temperature control object from a temperature control mode library;

[0026] The mode selection unit is further configured to determine whether the temperature control operation is a cooling operation or a heating operation based on the relationship between the abnormal temperature value and the temperature range, and select an alternative temperature control mode that satisfies the temperature control operation based on the initially selected temperature control mode;

[0027] a mode analysis unit, configured to obtain an action object and an action parameter type of each alternative temperature control mode, determine a control complexity based on the action object, determine a control time length based on the action parameter type, and determine a temperature control cost based on the action object and the action parameter type;

[0028] a process analysis unit, configured to determine a process time requirement and a process difficulty constraint based on process requirements, evaluate control complexity based on the process difficulty constraint, select a first temperature control method that satisfies the process difficulty constraint from alternative temperature control methods, evaluate a control time length based on the process time requirement, select a second temperature control method that satisfies the process time requirement from the alternative temperature control methods, and select a third temperature control method that satisfies both the first temperature control method and the second temperature control method;

[0029] The mode determining unit is configured to select a temperature control mode with the lowest temperature control cost from the third temperature control modes as a target temperature control mode.

[0030] Preferably, the mode selection unit includes:

[0031] a temperature reduction determination unit, configured to determine that the temperature control operation is a temperature reduction operation when the abnormal temperature value is greater than the temperature range;

[0032] The temperature increase determining unit is configured to determine that the temperature control operation is a temperature increase operation when the abnormal temperature value is less than the temperature range.

[0033] Preferably, the temperature control module includes:

[0034] a value determination unit, configured to determine a control parameter type based on a target temperature control mode, select a data table corresponding to the target temperature control mode, and obtain a control value corresponding to the temperature difference and the control parameter type from the data table;

[0035] a parameter determination unit, configured to obtain a control parameter based on a control value corresponding to a control parameter type;

[0036] The control unit is used to determine a control instruction for controlling the temperature of the die-casting mold based on the control parameters, and to control the temperature of the die-casting mold according to the control instruction.

[0037] Preferably, it further includes a data monitoring module for monitoring the temperature control process;

[0038] The data monitoring module includes:

[0039] A data acquisition unit is used to obtain the temperature change value of the temperature sensor during the temperature control process;

[0040] A data comparison unit, configured to compare the temperature change value with a theoretical change trend to obtain a change difference;

[0041] The parameter adjustment unit is used to determine whether the change difference is greater than a preset difference. If so, it is determined that the control parameter is adjusted; otherwise, it is determined that the temperature control process is normal.

[0042] Preferably, the parameter adjustment unit includes:

[0043] an adjusting unit, configured to determine an initial adjustment range based on a value of the change difference, and determine a latest control parameter of the control parameter adjusted according to the initial adjustment range;

[0044] The safety judgment unit is used to perform temperature control according to the latest control parameters when the latest control parameters meet the safety requirements; otherwise, perform a secondary adjustment on the latest control parameters.

[0045] A method for controlling a temperature control device for a die-casting mold, comprising:

[0046] S1: Based on the structural characteristics of the die-casting mold, determine the installation position of the temperature sensor on the die-casting mold, and install the temperature sensor at the installation position;

[0047] S2: Based on the installation location, determine the temperature range of each temperature sensor, collect temperature data of the temperature sensor, compare it with the temperature range, and obtain abnormal temperature values ​​and their corresponding installation locations;

[0048] S3: Based on the abnormal temperature value and its corresponding installation position, a target temperature control method that meets the process requirements is selected from the temperature control method library;

[0049] S4: Based on the target temperature control method and combined with the temperature difference, the control parameters are determined, and the temperature of the die-casting mold is controlled according to the control parameters.

[0050] Compared with the prior art, the present invention has achieved the following beneficial effects:

[0051] Based on the structural characteristics of the die-casting mold, the installation position of the temperature sensor on the die-casting mold is determined, and the temperature sensor is installed at the installation position to ensure accurate monitoring of the mold temperature. Based on the installation position, the temperature range of each temperature sensor is determined, and the temperature data of the temperature sensor is collected and compared with the temperature range to obtain abnormal temperature values ​​and their corresponding installation positions. Based on the abnormal temperature values ​​and their corresponding installation positions, the target temperature control method that meets the process requirements is selected from the temperature control method library. Based on the target temperature control method, the control parameters are determined in combination with the temperature difference. The die-casting mold is temperature controlled according to the control parameters to achieve temperature stability and accuracy of the die-casting mold during the production of the wheel hub, thereby ensuring the stability of the mold and the quality of the wheel hub during the production process.

[0052] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in this application document.

[0053] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0055] Figure 1 This is a structural diagram of a die-casting mold temperature control device according to an embodiment of the present invention;

[0056] Figure 2 This is a structural diagram of the temperature acquisition module described in an embodiment of the present invention;

[0057] Figure 3 The figure is a flow chart of a method for controlling the temperature of a die-casting mold in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0059] Example 1:

[0060] The embodiment of the present invention provides a temperature control device for a die casting mold, such as Figure 1 Shown, including:

[0061] a position determination module, configured to determine an installation position of a temperature sensor on the die-casting mold based on structural features of the die-casting mold, and to install the temperature sensor at the installation position;

[0062] The temperature acquisition module is used to determine the temperature range of each temperature sensor based on the installation location, collect the temperature data of the temperature sensor and compare it with the temperature range to obtain the abnormal temperature value and its corresponding installation location;

[0063] A method determination module is used to select a target temperature control method that meets the process requirements from a temperature control method library based on the abnormal temperature value and its corresponding installation location;

[0064] The temperature control module is used to determine the control parameters based on the target temperature control method and the temperature difference, and to control the temperature of the die-casting mold according to the control parameters.

[0065] In this embodiment, the installation locations include the die-casting mold inlet, runner, cavity, and cooling system. Mold inlet: Installing a temperature sensor at the mold inlet allows real-time monitoring of the temperature of the molten metal, ensuring it reaches the appropriate temperature before entering the mold, and preventing molding quality from being affected by excessively low or high temperatures. Runner: The runner is the main channel for the flow of molten metal. Installing a temperature sensor can monitor temperature changes within the runner, ensuring uniform heating of the molten metal in the runner, and avoiding local overheating or uneven cooling.

[0066] Cavity: The cavity is where the metal liquid is finally formed. Installing a temperature sensor can monitor the temperature changes in the cavity, ensure the temperature inside the cavity is stable, and avoid affecting the molding quality due to temperature fluctuations. Cooling system: Installing a temperature sensor in the cooling system can monitor the temperature of the cooling medium, ensure the normal operation of the cooling system, and avoid affecting the service life of the mold and molding quality due to insufficient or excessive cooling.

[0067] In this embodiment, different installation positions correspond to different die-casting mold positions and set different temperature ranges.

[0068] In this embodiment, the temperature control method library includes using circulating cooling water to control the mold temperature, using point cooling to control the mold temperature, using an oil heating device to control the mold temperature, controlling the spraying time and spraying amount, controlling the mold temperature, controlling the mold retention time to affect the mold temperature, controlling the alloy temperature to affect the mold temperature, etc.

[0069] In this embodiment, the control parameters include control time, alloy temperature, heating device temperature, etc., and the type of control parameters is determined according to the selected target temperature control method.

[0070] The beneficial effects of the above design scheme are: by determining the installation position of the temperature sensor on the die-casting mold based on the structural characteristics of the die-casting mold, and installing the temperature sensor at the installation position to ensure accurate monitoring of the mold temperature, by determining the temperature range of each temperature sensor based on the installation position, and collecting the temperature data of the temperature sensor and comparing it with the temperature range, obtaining the abnormal temperature value and its corresponding installation position, based on the abnormal temperature value and its corresponding installation position, selecting the target temperature control method that meets the process requirements from the temperature control method library, based on the target temperature control method, combining the temperature difference, determining the control parameters, and controlling the temperature of the die-casting mold according to the control parameters, so as to achieve the temperature stability and accuracy of the die-casting mold during the production of the wheel hub, thereby ensuring the stability of the mold and the quality of the wheel hub during the production process.

[0071] Example 2:

[0072] Based on Example 1, an embodiment of the present invention provides a die-casting mold temperature control device, wherein the position determination module includes:

[0073] A feature acquisition unit is used to obtain the mold inlet shape, runner shape, cavity shape and cooling system shape, as well as the mold inlet size, runner length, cavity surface area and cooling system size based on the structural features of the die-casting mold;

[0074] an object determination unit, configured to set an initial number of temperature sensors based on the mold inlet size, runner length, cavity surface area, and cooling system size, and to obtain temperature monitoring objects for the mold inlet, runner, cavity, and cooling system;

[0075] a weight determination unit, configured to determine a first influence weight based on a stable temperature range of the temperature monitoring object, determine a second influence weight based on an influence of the temperature monitoring object on process quality, and determine a comprehensive influence weight on the temperature monitoring object based on the first influence weight and the second influence weight;

[0076] a quantity determination unit, configured to perform weighted processing on an initial quantity of temperature sensors based on a difference between the comprehensive impact weight and the standard impact weight to obtain a target quantity;

[0077] a position determination unit, configured to determine key positions of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to distribute the positions of the temperature sensors based on the key positions and the target number to obtain the installation positions of the temperature sensors;

[0078] The installation unit is used to determine an installation method based on structural characteristics of the installation location, and install the temperature sensor at the installation location according to the installation method.

[0079] In this embodiment, the temperature monitoring objects of the mold inlet, runner, cavity and cooling system are respectively the metal liquid, the temperature change in the runner, the temperature change in the cavity and the temperature of the cooling medium.

[0080] In this embodiment, the smaller the stable temperature range is, the greater the corresponding first influence weight is, and the greater the influence of the temperature monitoring object on the process quality is, the greater the second influence weight is.

[0081] In this embodiment, the standard impact weight is pre-designed, and the greater the difference between the comprehensive impact weight and the standard impact weight, the greater the adjustment range of the initial quantity.

[0082] In this embodiment, the installation method is, for example, hanging.

[0083] The beneficial effect of the above design scheme is: by considering the structural characteristics of the die-casting mold, the mold inlet shape, runner shape, cavity shape and cooling system shape, and the mold inlet size, runner length, cavity surface area and cooling system size are obtained to determine the number and installation positions of temperature sensors, ensuring the rationality of the position and number of the obtained temperature sensors, and being able to accurately monitor the mold temperature, providing an accurate temperature monitoring basis for the temperature control of the casting mold.

[0084] Example 3:

[0085] Based on Example 2, an embodiment of the present invention provides a die-casting mold temperature control device, wherein the position determination unit includes:

[0086] a position acquisition unit, configured to determine the center position of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to search based on the center position based on the processing features of the mold inlet, runner, cavity, and cooling system to obtain a key position;

[0087] The parameter acquisition unit is used to determine the position, direction and distance based on the mold inlet shape, runner shape, cavity shape and cooling system shape, combined with the target quantity, and obtain the installation position of the temperature sensor based on the position, direction and distance, and the key position as a reference.

[0088] The beneficial effects of the above design scheme are: by determining the center position of the mold inlet, runner, cavity and cooling system based on the mold inlet shape, runner shape, cavity shape and cooling system shape, and based on the processing characteristics of the mold inlet, runner, cavity and cooling system, searching based on the center position to obtain the key position, based on the mold inlet shape, runner shape, cavity shape and cooling system shape, combined with the target number, determining the position, direction and distance, based on the position determination direction and distance, the key position is used as a reference to obtain the installation position of the temperature sensor, thereby ensuring the rationality of the obtained temperature sensor installation position.

[0089] Example 4:

[0090] Based on Example 1, the present invention provides a temperature control device for a die casting mold, such as Figure 2 As shown, the temperature acquisition module includes:

[0091] A range determination unit for setting a temperature range for each temperature sensor based on its installation location in the mold inlet, runner, cavity, and cooling system;

[0092] An acquisition unit, used to acquire the temperature of various positions of the die-casting mold based on a temperature sensor to obtain temperature data;

[0093] The comparison unit is used to compare the temperature data with the temperature range, obtain an abnormal temperature value corresponding to the temperature data not within the temperature range, and determine an installation position corresponding to the abnormal temperature value based on the temperature sensor of the abnormal temperature value.

[0094] The beneficial effect of the above design scheme is: by determining the temperature range of each temperature sensor based on the installation position, and collecting the temperature data of the temperature sensor and comparing it with the temperature range, the abnormal temperature value and its corresponding installation position are obtained, providing a basis for further temperature control.

[0095] Example 5:

[0096] Based on Example 1, an embodiment of the present invention provides a die-casting mold temperature control device, wherein the mode determination module includes:

[0097] a mode selection unit, configured to determine a temperature control object based on an installation position corresponding to an abnormal temperature value, and select a primary temperature control mode that satisfies the temperature control object from a temperature control mode library;

[0098] The mode selection unit is further configured to determine whether the temperature control operation is a cooling operation or a heating operation based on the relationship between the abnormal temperature value and the temperature range, and select an alternative temperature control mode that satisfies the temperature control operation based on the initially selected temperature control mode;

[0099] a mode analysis unit, configured to obtain an action object and an action parameter type of each alternative temperature control mode, determine a control complexity based on the action object, determine a control time length based on the action parameter type, and determine a temperature control cost based on the action object and the action parameter type;

[0100] a process analysis unit, configured to determine a process time requirement and a process difficulty constraint based on process requirements, evaluate control complexity based on the process difficulty constraint, select a first temperature control method that satisfies the process difficulty constraint from alternative temperature control methods, evaluate a control time length based on the process time requirement, select a second temperature control method that satisfies the process time requirement from the alternative temperature control methods, and select a third temperature control method that satisfies both the first temperature control method and the second temperature control method;

[0101] The mode determining unit is configured to select a temperature control mode with the lowest temperature control cost from the third temperature control modes as a target temperature control mode.

[0102] In this embodiment, the objects of action are, for example, die-casting molds, alloy temperature, spraying objects, etc.

[0103] In this embodiment, the action parameter types include, for example, cooling with cooling water, heating by a heating device, controlling spraying time and spraying amount, and the like.

[0104] The beneficial effect of the above design scheme is: by selecting temperature control methods layer by layer based on factors such as the temperature control object, the relationship between abnormal temperature values ​​and temperature range, process requirements and cost requirements, it is ensured that the selected target temperature control method achieves the optimal choice in terms of control accuracy, control time and control cost, providing a theoretical basis for the actual operation of temperature control.

[0105] Example 6:

[0106] Based on Example 5, an embodiment of the present invention provides a die-casting mold temperature control device, wherein the mode selection unit includes:

[0107] a temperature reduction determination unit, configured to determine that the temperature control operation is a temperature reduction operation when the abnormal temperature value is greater than the temperature range;

[0108] The temperature increase determining unit is configured to determine that the temperature control operation is a temperature increase operation when the abnormal temperature value is less than the temperature range.

[0109] The beneficial effect of the above design scheme is: when the abnormal temperature value is greater than the temperature range, the temperature control operation is determined to be a cooling operation; when the abnormal temperature value is less than the temperature range, the temperature control operation is determined to be a heating operation, providing a basis for selecting the temperature control method.

[0110] Example 7:

[0111] Based on Example 1, this embodiment of the present invention provides a temperature control device for a die-casting mold, wherein the temperature control module includes:

[0112] a value determination unit, configured to determine a control parameter type based on a target temperature control mode, select a data table corresponding to the target temperature control mode, and obtain a control value corresponding to the temperature difference and the control parameter type from the data table;

[0113] a parameter determination unit, configured to obtain a control parameter based on a control value corresponding to a control parameter type;

[0114] The control unit is used to determine a control instruction for controlling the temperature of the die-casting mold based on the control parameters, and to control the temperature of the die-casting mold according to the control instruction.

[0115] The beneficial effects of the above design scheme are: by determining the control parameter type based on the target temperature control method, selecting the data table corresponding to the target temperature control method, obtaining the temperature difference and the control value corresponding to the control parameter type from the data table, and obtaining the control parameter based on the control value corresponding to the control parameter type, and determining the control instruction for the temperature control of the die-casting mold based on the control parameter, and controlling the temperature of the die-casting mold according to the control instruction, thereby achieving the temperature stability and accuracy of the die-casting mold during the production of the wheel hub, thereby ensuring the stability of the mold and the quality of the wheel hub during the production process.

[0116] Example 8:

[0117] Based on Example 7, an embodiment of the present invention provides a die-casting mold temperature control device, further comprising a data monitoring module for monitoring the temperature control process;

[0118] The data monitoring module includes:

[0119] A data acquisition unit is used to obtain the temperature change value of the temperature sensor during the temperature control process;

[0120] A data comparison unit, configured to compare the temperature change value with a theoretical change trend to obtain a change difference;

[0121] The parameter adjustment unit is used to determine whether the change difference is greater than a preset difference. If so, it is determined that the control parameter is adjusted; otherwise, it is determined that the temperature control process is normal.

[0122] The beneficial effects of the above design scheme are: by obtaining the temperature change value of the temperature sensor during the temperature control process; comparing the temperature change value with the theoretical change trend to obtain the change difference, and judging whether the change difference is greater than the preset difference. If so, it is determined to adjust the control parameters; otherwise, it is determined that the temperature control process is normal, and Xi'an monitors and adjusts the temperature control to ensure the accuracy of the temperature control of the die-casting mold in real time.

[0123] Example 9:

[0124] Based on Example 8, this embodiment of the present invention provides a die-casting mold temperature control device, wherein the parameter adjustment unit includes:

[0125] an adjusting unit, configured to determine an initial adjustment range based on a value of the change difference, and determine a latest control parameter of the control parameter adjusted according to the initial adjustment range;

[0126] The safety judgment unit is used to perform temperature control according to the latest control parameters when the latest control parameters meet the safety requirements; otherwise, perform a secondary adjustment on the latest control parameters.

[0127] The beneficial effects of the above design scheme are as follows: by determining an initial adjustment range based on the value of the change difference, determining the latest control parameters adjusted according to the initial adjustment range; when the latest control parameters meet safety requirements, temperature control is performed according to the latest control parameters; otherwise, the latest control parameters are adjusted again, ensuring the safety and accuracy of parameter adjustment.

[0128] Example 10:

[0129] Based on Example 1, the present invention provides a method for controlling a temperature control device for a die-casting mold. Figure 3 Shown, including:

[0130] S1: Based on the structural characteristics of the die-casting mold, determine the installation position of the temperature sensor on the die-casting mold, and install the temperature sensor at the installation position;

[0131] S2: Based on the installation location, determine the temperature range of each temperature sensor, collect temperature data of the temperature sensor, compare it with the temperature range, and obtain abnormal temperature values ​​and their corresponding installation locations;

[0132] S3: Based on the abnormal temperature value and its corresponding installation position, a target temperature control method that meets the process requirements is selected from the temperature control method library;

[0133] S4: Based on the target temperature control method and combined with the temperature difference, the control parameters are determined, and the temperature of the die-casting mold is controlled according to the control parameters.

[0134] In this embodiment, the installation locations include the die-casting mold inlet, runner, cavity, and cooling system. Mold inlet: Installing a temperature sensor at the mold inlet allows real-time monitoring of the temperature of the molten metal, ensuring it reaches the appropriate temperature before entering the mold, and preventing molding quality from being affected by excessively low or high temperatures. Runner: The runner is the main channel for the flow of molten metal. Installing a temperature sensor can monitor temperature changes within the runner, ensuring uniform heating of the molten metal in the runner, and avoiding local overheating or uneven cooling.

[0135] Cavity: The cavity is where the metal liquid is finally formed. Installing a temperature sensor can monitor the temperature changes in the cavity, ensure the temperature inside the cavity is stable, and avoid affecting the molding quality due to temperature fluctuations. Cooling system: Installing a temperature sensor in the cooling system can monitor the temperature of the cooling medium, ensure the normal operation of the cooling system, and avoid affecting the service life of the mold and molding quality due to insufficient or excessive cooling.

[0136] In this embodiment, different installation positions correspond to different die-casting mold positions and set different temperature ranges.

[0137] In this embodiment, the temperature control method library includes using circulating cooling water to control the mold temperature, using point cooling to control the mold temperature, using an oil heating device to control the mold temperature, controlling the spraying time and spraying amount, controlling the mold temperature, controlling the mold retention time to affect the mold temperature, controlling the alloy temperature to affect the mold temperature, etc.

[0138] In this embodiment, the control parameters include control time, alloy temperature, heating device temperature, etc., and the type of control parameters is determined according to the selected target temperature control method.

[0139] The beneficial effects of the above design scheme are: by determining the installation position of the temperature sensor on the die-casting mold based on the structural characteristics of the die-casting mold, and installing the temperature sensor at the installation position to ensure accurate monitoring of the mold temperature, by determining the temperature range of each temperature sensor based on the installation position, and collecting the temperature data of the temperature sensor and comparing it with the temperature range, obtaining the abnormal temperature value and its corresponding installation position, based on the abnormal temperature value and its corresponding installation position, selecting the target temperature control method that meets the process requirements from the temperature control method library, based on the target temperature control method, combining the temperature difference, determining the control parameters, and controlling the temperature of the die-casting mold according to the control parameters, so as to achieve the temperature stability and accuracy of the die-casting mold during the production of the wheel hub, thereby ensuring the stability of the mold and the quality of the wheel hub during the production process.

[0140] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of this application document and its equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A die casting mold temperature control device, characterized in that: include: a position determination module, configured to determine an installation position of a temperature sensor on the die-casting mold based on structural features of the die-casting mold, and to install the temperature sensor at the installation position; The temperature acquisition module is used to determine the temperature range of each temperature sensor based on the installation location, collect the temperature data of the temperature sensor and compare it with the temperature range to obtain the abnormal temperature value and its corresponding installation location; The method determination module is used to select the target temperature control method that meets the process requirements from the temperature control method library based on the abnormal temperature value and its corresponding installation location, including: a mode selection unit, configured to determine a temperature control object based on an installation position corresponding to an abnormal temperature value, and select a primary temperature control mode that satisfies the temperature control object from a temperature control mode library; The mode selection unit is further configured to determine whether the temperature control operation is a cooling operation or a heating operation based on the relationship between the abnormal temperature value and the temperature range, and select an alternative temperature control mode that satisfies the temperature control operation based on the initially selected temperature control mode; a mode analysis unit, configured to obtain an action object and an action parameter type of each alternative temperature control mode, determine a control complexity based on the action object, determine a control time length based on the action parameter type, and determine a temperature control cost based on the action object and the action parameter type; a process analysis unit, configured to determine a process time requirement and a process difficulty constraint based on process requirements, evaluate control complexity based on the process difficulty constraint, select a first temperature control method that satisfies the process difficulty constraint from alternative temperature control methods, evaluate a control time length based on the process time requirement, select a second temperature control method that satisfies the process time requirement from the alternative temperature control methods, and select a third temperature control method that satisfies both the first temperature control method and the second temperature control method; a mode determining unit, configured to select a temperature control mode with the lowest temperature control cost from the third temperature control mode as a target temperature control mode; The temperature control module is used to determine the control parameters based on the target temperature control method and the temperature difference, and to control the temperature of the die-casting mold according to the control parameters.

2. A die-casting mold temperature control device according to claim 1, characterized in that: The position determination module includes: A feature acquisition unit is used to obtain the mold inlet shape, runner shape, cavity shape and cooling system shape, as well as the mold inlet size, runner length, cavity surface area and cooling system size based on the structural features of the die-casting mold; an object determination unit, configured to set an initial number of temperature sensors based on the mold inlet size, runner length, cavity surface area, and cooling system size, and to obtain temperature monitoring objects for the mold inlet, runner, cavity, and cooling system; a weight determination unit, configured to determine a first influence weight based on a stable temperature range of the temperature monitoring object, determine a second influence weight based on an influence of the temperature monitoring object on process quality, and determine a comprehensive influence weight on the temperature monitoring object based on the first influence weight and the second influence weight; a quantity determination unit, configured to perform weighted processing on an initial quantity of temperature sensors based on a difference between the comprehensive impact weight and the standard impact weight to obtain a target quantity; a position determination unit, configured to determine key positions of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to distribute the positions of the temperature sensors based on the key positions and the target number to obtain the installation positions of the temperature sensors; The installation unit is used to determine an installation method based on structural characteristics of the installation location, and install the temperature sensor at the installation location according to the installation method.

3. A die-casting mold temperature control device according to claim 2, characterized in that: The position determination unit includes: a position acquisition unit, configured to determine the center position of the mold inlet, runner, cavity, and cooling system based on the mold inlet shape, runner shape, cavity shape, and cooling system shape, and to search based on the center position based on the processing features of the mold inlet, runner, cavity, and cooling system to obtain a key position; The parameter acquisition unit is used to determine the position, direction and distance based on the mold inlet shape, runner shape, cavity shape and cooling system shape, combined with the target quantity, and obtain the installation position of the temperature sensor based on the position, direction and distance, and the key position as a reference.

4. The die-casting mold temperature control device according to claim 1, characterized in that: The temperature acquisition module includes: A range determination unit for setting a temperature range for each temperature sensor based on its installation location in the mold inlet, runner, cavity, and cooling system; An acquisition unit, used to acquire the temperature of various positions of the die-casting mold based on a temperature sensor to obtain temperature data; The comparison unit is used to compare the temperature data with the temperature range, obtain an abnormal temperature value corresponding to the temperature data not within the temperature range, and determine an installation position corresponding to the abnormal temperature value based on the temperature sensor of the abnormal temperature value.

5. The die-casting mold temperature control device according to claim 1, characterized in that: The mode selection unit includes: a temperature reduction determination unit, configured to determine that the temperature control operation is a temperature reduction operation when the abnormal temperature value is greater than the temperature range; The temperature increase determining unit is configured to determine that the temperature control operation is a temperature increase operation when the abnormal temperature value is less than the temperature range.

6. The die-casting mold temperature control device according to claim 1, characterized in that: The temperature control module comprises: a value determination unit, configured to determine a control parameter type based on a target temperature control mode, select a data table corresponding to the target temperature control mode, and obtain a control value corresponding to the temperature difference and the control parameter type from the data table; a parameter determination unit, configured to obtain a control parameter based on a control value corresponding to a control parameter type; The control unit is used to determine a control instruction for controlling the temperature of the die-casting mold based on the control parameters, and to control the temperature of the die-casting mold according to the control instruction.

7. The die-casting mold temperature control device according to claim 6, characterized in that: Also included is a data monitoring module for monitoring the temperature control process; The data monitoring module includes: A data acquisition unit is used to obtain the temperature change value of the temperature sensor during the temperature control process; A data comparison unit, configured to compare the temperature change value with a theoretical change trend to obtain a change difference; The parameter adjustment unit is used to determine whether the change difference is greater than a preset difference. If so, it is determined that the control parameter is adjusted; otherwise, it is determined that the temperature control process is normal.

8. The die-casting mold temperature control device according to claim 7, characterized in that: The parameter adjustment unit includes: an adjusting unit, configured to determine an initial adjustment range based on a value of the change difference, and determine a latest control parameter of the control parameter adjusted according to the initial adjustment range; The safety judgment unit is used to perform temperature control according to the latest control parameters when the latest control parameters meet the safety requirements; otherwise, perform a secondary adjustment on the latest control parameters.

9. The control method of a die-casting mold temperature control device according to claim 1, characterized in that: include: S1: Based on the structural characteristics of the die-casting mold, determine the installation position of the temperature sensor on the die-casting mold, and install the temperature sensor at the installation position; S2: Based on the installation location, determine the temperature range of each temperature sensor, collect temperature data of the temperature sensor, compare it with the temperature range, and obtain abnormal temperature values ​​and their corresponding installation locations; S3: Based on the abnormal temperature value and its corresponding installation position, a target temperature control method that meets the process requirements is selected from the temperature control method library; S4: Based on the target temperature control method and combined with the temperature difference, the control parameters are determined, and the temperature of the die-casting mold is controlled according to the control parameters.

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