Intelligent liquid spraying cooling system for die in die-casting process

Abstract

The invention provides an intelligent liquid spraying cooling system for a die in a die-casting process. The intelligent liquid spraying cooling system comprises a hardware unit, an operation control unit and a cooling method. The hardware unit comprises a movement mechanism, an imaging device, a fixing device connected with the movement mechanism, and a temperature detection device, a spraying and blowing device and a lens cleaning and protecting device which are arranged on the fixing device. The operation control unit comprises a thermal imaging recognition program, a temperature numerical value calculation program, a movement track calculation and driving program of the movement mechanism, an opening and closing control program of the spraying and blowing device, a gas-liquid external spraying amount control program, a data information external display driving program, a control parameter adjustment program and a cooling effect detection program. The cooling method comprises the steps of S1, temperature measurement, S2, calculation, S3, liquid spraying, S4, secondary temperature measurement, S5, visual verification and S6, blowing and air drying. The cooling system controls the liquid spraying amount of different temperature areas in a point-to-point liquid spraying mode according to different temperature values in the cooling liquid spraying cooling process so as to achieve uniform cooling.

Description

Technical Field

[0001] The technology of the present invention belongs to the field of die-casting of metal products, and relates to the cooling of the mold and the molded product in the die-casting process of the die-casting machine, and specifically to a method and device for cooling the mold using an integrated intelligent liquid injection mold. Background Art

[0002] Die casting is a metal casting process, which is characterized by applying high pressure to the molten metal in the mold cavity. The mold is usually made of a higher strength alloy. During die casting production, the mold surface and its internal deformation are mutually involved, resulting in repeated cycles of thermal stress. During the die casting process, the mold will be constantly impacted by high-temperature molten metal and repeatedly subjected to the effects of cold and hot shocks. If the temperature is not reduced in time, the mold surface temperature will be too high, and problems such as mold deformation and cracking will often occur, and even the finish of the mold surface will be affected, thereby affecting the quality of the die-cast product.

[0003] Chinese Patent Publication No. CN114871410A discloses an invention patent application entitled, A die-casting mold cooling device and its use method. The method for using the die-casting mold cooling device disclosed in the invention patent application includes the following steps: S1 The staff places the overheated die-casting mold on the cooling device, and the die-casting mold enters the coolant through the lifting and lowering of the electric push rod for cooling. S2 The staff adjusts the placement time according to the required temperature of the die-casting mold, and monitors the temperature of the die-casting mold in real time through the infrared temperature sensing device, which is convenient for the staff to extract the die-casting mold. S3 After the die-casting mold is cooled, the staff can load the die-casting mold at the desired position and continue the die-casting operation.

[0004] Although the technical solution disclosed in this invention patent application can also solve the problem of mold cooling during the die-casting process of the die-casting machine, the following technical defects and new derivative problems will also occur in the specific mold cooling link.

[0005] 1) After the die casting process of the die casting machine, the overheated die casting mold needs to be manually removed from the die casting machine and placed in the coolant for cooling. After the cooling is completed, the die casting mold is manually loaded at the required position to continue the die casting operation. The die casting efficiency of the product is not only affected by the continuous disassembly and cooling of the die casting machine, but also shortens the service life of the die and the die base plate of the die casting machine, and also accelerates the damage rate of the metal structure at the connection end of the two.

[0006] 2) During the die-casting process of metal products, the forming mold needs to be preheated to about 1 / 3 of the pouring temperature of the metal solution. If the forming mold temperature is preheated too high or too low, it will affect the quality of the die-casting and the service life of the mold. The die-casting mold as a whole enters the coolant for cooling treatment. During the whole process, it is difficult to accurately control the temperature of the die-casting mold after cooling. If the temperature of the mold is too low after installation, it needs to be preheated again. Summary of the invention

[0007] In order to solve the above problems existing in the prior art, the present invention provides an intelligent liquid spray cooling system for molds in a die-casting process, which includes a hardware unit and an operation control unit. The cooling method adopts a point spray cooling mode, and the system simultaneously detects different temperature values ​​in the surface area of ​​the front mold and the rear mold of the die-casting machine by infrared thermal sensing. During the cooling process of the cooling liquid spray, the amount of liquid sprayed in different temperature areas is controlled by point-to-point liquid spraying according to different temperature values, so as to achieve uniform cooling of different temperature areas on the surface of the front mold and the rear mold of the die-casting machine.

[0008] Specifically, the intelligent liquid spray cooling and temperature reduction system for the mold in the die-casting process of the present invention includes a hardware unit and an operation control unit; its hardware unit includes a motion mechanism, an imaging device, a fixing device connected to the motion mechanism and a temperature detection device arranged on the fixing device, a spray blowing device, and a lens cleaning device.

[0009] The moving mechanism is arranged on the die-casting machine. The fixing device, the temperature detection device, the spray blowing device and the lens cleaning device move between the top of the die-casting machine and the mold under the drive of the moving mechanism. The temperature detection device is an infrared thermal imaging lens arranged on the left and right sides of the fixing device. The lens cleaning device is used for protecting and cleaning the infrared thermal imaging lens.

[0010] The spraying and blowing device is a liquid spray head I and an air spray head arranged on the left and right sides of the fixing device. The liquid spray head I and the air spray head are connected to the air source and liquid source of the die-casting machine through an air pipe and a liquid pipe. A control valve is arranged on the liquid spray head I.

[0011] Specifically, the intelligent liquid spray cooling system for molds in the die-casting process of the present invention includes a hardware unit and an operation control unit. The operation control unit includes a thermal imaging recognition program, a temperature numerical calculation program, a movement trajectory calculation and drive program of the motion mechanism, an opening and closing control program of the spray blowing device, a gas-liquid external spray volume control program, a data information external display driver, a control parameter adjustment program and a cooling effect detection program.

[0012] Furthermore, the intelligent liquid spray cooling system for the mold in the die-casting process of the present invention also includes a cooling method of the following steps.

[0013] S1 temperature measurement;

[0014] After the die-casting machine opens the mold, the system drives the hardware unit to move between the front mold and the rear mold of the die-casting machine. The infrared thermal imaging lens on the hardware unit simultaneously detects the temperature difference distribution of the surface areas of the front mold and the rear mold and forms a heat map. The system receives the infrared heat signal recognized by the lens and calculates the temperature values ​​of the temperature difference of the surface areas of the front mold and the rear mold in the heat map.

[0015] S2 calculation;

[0016] When some or all of the temperature values ​​in the temperature difference thermal map of the front and rear mold surface areas exceed the mold preheating threshold, the system calculates the amount of spray required for different temperature values ​​to cool to the preheating threshold based on the temperature values ​​of the thermal map of the front and rear mold surface areas.

[0017] S3 spray;

[0018] The system drives the hardware unit to spray liquid to the areas with different surface temperatures of the front mold and the rear mold at the same time according to the spray volume calculated by S2. The spray volume required for each area with different temperatures is controlled by a number of spray heads I arranged on the hardware unit.

[0019] S4 secondary temperature measurement;

[0020] Mode 1: After the system completes the S3 liquid spraying procedure, the infrared thermal imaging lens once again simultaneously detects the temperature difference distribution of the surface areas of the front mold and the rear mold and calculates the temperature value of the temperature difference in each area. When all temperature values ​​are close to the preheating threshold, the secondary temperature measurement is completed.

[0021] Mode 2: After the system completes the S3 liquid spraying procedure, the infrared thermal imaging lens once again simultaneously detects the temperature difference distribution of the surface areas of the front mold and the rear mold and calculates the temperature value of the temperature difference in each area. When some or all of the temperature values ​​still exceed the preheating threshold, the system drives the hardware unit to restart the S3 liquid spraying process and repeats the S4 secondary temperature measurement step once.

[0022] S5 Visual verification;

[0023] After completing the S4 secondary temperature measurement process, the infrared thermal signals and regional temperature differences on the surfaces of the front and rear molds after cooling, identified by the infrared thermal imaging lens, are manually verified visually using a thermal imaging device.

[0024] S6 blow dry;

[0025] After completing the S5 visual verification process, the system drives the air nozzle on the hardware unit to blow away the cooling liquid remaining on the surface area of ​​the front mold and the rear mold. The cooling step is completed after the surface area of ​​the front mold and the rear mold is dry and free of liquid.

[0026] Furthermore, in the intelligent liquid spraying cooling system for the mold in the die-casting process described in the present invention, the cooling method also includes a spraying release agent program.

[0027] As an optional procedure, in one of the release agent spraying procedures, in the S3 liquid spraying process, the liquid spray head I sprays the release agent mixture to cool the mold while completing the spraying of the release agent.

[0028] As an optional procedure, in the second step of spraying the release agent, in the S3 liquid spraying process, the liquid spray head I sprays cooling water to cool the mold, and after the S6 air blowing and air drying process is completed, the liquid spray head II sprays the release agent to complete the spraying of the release agent on the mold.

[0029] Furthermore, in the intelligent liquid spraying and cooling system for molds in the die-casting process described in the present invention, the hardware units in the S3 liquid spraying and / or S6 air blowing and drying steps are in a stationary state, and the liquid spraying amount or air blowing amount required for each area on the surface of the front mold and the rear mold are controlled separately by a plurality of liquid spray heads I or air spray heads arranged on the system driving hardware unit.

[0030] Furthermore, in the intelligent liquid spray cooling and temperature reduction system for molds in the die-casting process described in the present invention, the hardware units in the S3 liquid spraying and / or S5 air blowing and drying steps are in a parallel or vertical linear motion state, and the amount of liquid spray required for cooling each area on the surface of the front mold and the rear mold is controlled by the liquid spray head I or the air spray head of the system-driven hardware unit by staying in each area on the surface of the front mold and the rear mold for different lengths of time during movement.

[0031] Furthermore, in the intelligent liquid spray cooling system for molds in the die-casting process described in the present invention, in the S1 temperature measurement and / or S4 secondary temperature measurement steps, when the height difference between the front mold and the rear mold surfaces is large, the infrared thermal imaging lens is axially swung perpendicular to the surface areas of the front mold and the rear mold to detect the temperature difference distribution of the surface difference section of the front mold and the rear mold surfaces. The system receives the infrared heat signal recognized by the lens and calculates the temperature values ​​of the temperature difference of the surface difference section of the front mold and the rear mold surfaces.

[0032] Furthermore, in the mold intelligent liquid spray cooling system in the die-casting process of the present invention, the S1 temperature measurement step also includes a distance measurement program. When the hardware unit moves between the front mold and the rear mold of the die-casting machine, the infrared rangefinder on the hardware unit measures the distance between it and the front mold and the rear mold. The system drives the hardware unit to move to a precise position between the front mold and the rear mold through the measured distance.

[0033] Furthermore, in the intelligent liquid spraying cooling system for molds in the die-casting process described in the present invention, in the S3 liquid spraying step, when the height difference between the front and rear mold surfaces is large, the liquid spray head I arranged on the hardware unit is arranged alternately and retracted forward and backward under the control of the system along with the height difference between the front and rear mold surfaces, and the liquid spray head I simultaneously sprays liquid and cools the front and rear mold surfaces with convex and concave drop differences at equal intervals.

[0034] Furthermore, in the intelligent liquid spraying cooling system for molds in the die-casting process described in the present invention, in the S3 liquid spraying step, when the height difference between the front mold and the rear mold surfaces is large, the liquid spray head I arranged on the hardware unit moves along the shape of the surface difference between the front mold and the rear mold to spray liquid for cooling under the control of the system.

[0035] Furthermore, in the die-casting process of the present invention, the intelligent liquid spray cooling system for the mold, in the S1 temperature measurement step, when part of the temperature value of the temperature difference between the surface area of ​​the front mold and the rear mold exceeds a multiple of the preheating threshold, in the S4 secondary temperature measurement step, the system drives the infrared thermal imaging lens to continuously track and monitor the area where the surface temperature of the front mold and the rear mold exceeds the multiple of the preheating threshold.

[0036] The hardware unit of the intelligent liquid spray cooling system for molds in the die-casting process of the present invention includes the following specific structure.

[0037] The liquid spraying hardware unit is arranged on one side of the die casting machine, and includes a motion mechanism, a spray blowing device arranged at the front end of the motion mechanism, and an imaging device electrically connected to the system. The spray blowing device moves through the motion mechanism under the drive of the system.

[0038] Specifically, the intelligent liquid spray cooling system for molds in the die-casting process of the present invention includes a spray blowing device including a fixing device and infrared thermal imaging lenses, a liquid spray head I, and an air spray head respectively arranged on the left and right sides of the fixing device. The liquid spray head I and the air spray head are arranged in an array on the left and right sides of the fixing device and are connected to the air source and liquid source of the die-casting machine through an air pipe and a liquid pipe. A control valve is provided on the liquid spray head I. The system converts the infrared heat signals on the surfaces of the front and rear molds and the temperature values ​​of the regional temperature difference recognized by the receiving lens into images and graphics that can be distinguished by human vision and displayed externally by the imaging device.

[0039] Furthermore, in the die-casting process intelligent liquid spray cooling system of the present invention, the spray blowing device also includes an infrared rangefinder and a liquid spray head II respectively arranged on the left and right sides of the fixing device, and the liquid spray head II is provided with a control valve. The liquid spray head I is provided with a telescopic component that drives it to move forward and backward, and the infrared thermal imaging lens is provided with a rotating component that drives it to swing axially at the connection end with the fixing device.

[0040] The beneficial effects of the present invention are:

[0041] 1. The intelligent liquid spray cooling system for molds in the die-casting process provided by the present invention does not need to remove the overheated die-casting mold from the die-casting machine and put it into the coolant for cooling after the die-casting process of the die-casting machine. The hardware unit moves between the front mold and the rear mold of the die-casting mold under the drive of the motion mechanism, and the liquid spray heads I arranged on the left and right sides spray liquid to cool the front mold and the rear mold at the same time, which not only prolongs the service life of the mold, but also shortens the process time of the die-casting process and reduces production costs.

[0042] 2 The intelligent liquid spray cooling system for molds in the die-casting process provided by the present invention uses an infrared thermal imaging lens to sense the infrared radiation signals emitted by the surfaces of the front mold and the rear mold. The different temperature differences of the radiation signals can accurately calculate the amount of liquid spray required for cooling the front mold and the rear mold to the mold preheating temperature, so that the front mold and the rear mold of the die-casting mold can be accurately cooled to the mold preheating temperature at the same time, avoiding the need for secondary heating and preheating due to excessive cooling of the mold.

[0043] 3 The intelligent liquid spray cooling system for the mold in the die-casting process provided by the present invention adopts a multi-point liquid spray driven cooling mode. The system concentrates liquid spray cooling on the high-temperature areas of the front mold and the rear mold. The multi-point differential liquid spray mode can quickly cool the entire area of ​​the die-casting mold to the initial preheating temperature at the same time.

[0044] The beneficial effects of the present invention are not limited to this description. For better understanding, a more detailed description is given in the specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 Schematic diagram of the three-dimensional structure of the intelligent liquid spray cooling system for the mold in the die-casting process of the present invention connected with the die-casting machine (I)

[0047] Figure 2 Schematic diagram of the three-dimensional structure of the intelligent liquid spray cooling system for the mold in the die-casting process of the present invention connected with the die-casting machine (I)

[0048] Figure 3 This is a three-dimensional structural diagram of the infrared thermal imaging lens and the liquid spray head I component of the intelligent liquid spray cooling system for the mold in the die-casting process of the present invention.

[0049] Figure 4 This is a schematic diagram of the position of the mold intelligent liquid spray cooling system in the die casting process of the present invention, its spray blowing device and the front and rear molds of the die casting machine

[0050] Figure 5 This is a flow chart of the cooling method steps of the intelligent liquid spray cooling system for the mold in the die casting process of the present invention

[0051] Figure 6 It is a two-dimensional simulation of the infrared temperature of the front mold or the rear mold in the mold intelligent liquid spray cooling system in the die casting process of the present invention.

[0052] Figure 7 This is a schematic diagram of the position of the spray blowing device and the front mold and the rear mold in the static cooling mode of the mold intelligent liquid spray cooling system in the die casting process of the present invention.

[0053] Figure 8 This is a schematic diagram of the position of the mold intelligent liquid spray cooling system in the die casting process of the present invention, and its motion cooling mode is in the spray blowing device and the front mold and the rear mold DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0055] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The intelligent liquid spray cooling system for molds in the die casting process of the present invention comprises a cooling method and a hardware unit. The specific mechanism and components of the hardware unit of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0057] The intelligent liquid spray cooling system for molds in the die casting process of the present invention includes a hardware unit and an operation control unit. Figure 1 and Figure 2 As shown, the hardware unit A is arranged on one side of the die-casting machine B (this embodiment takes the upper end of the die-casting machine as an example). The hardware unit A includes a motion mechanism 1, an imaging device 2, a fixing device 3, a temperature detection device 4, a spraying and blowing device 5, and a lens cleaning device. The fixing device 3 is connected to one side of the motion mechanism 1, and the temperature detection device 4, the spraying and blowing device 5, and the lens cleaning device 6 are arranged on the fixing device 3. The imaging device 2 is electrically connected to the system, and the hardware unit A moves in the die working area of ​​the die-casting machine B through the motion mechanism 1 under the drive of the system.

[0058] refer to Figure 1 and Figure 2As shown, the motion mechanism 1 is arranged on the die-casting machine B, and the imaging device 2 is a display screen arranged on one side of the die-casting machine B. The fixing device 3, the temperature detection device 4, the spray blowing device 5 and the lens cleaning device move between the top of the die-casting machine B and the front mold B1 and the rear mold B2 of the mold under the drive of the motion mechanism 1. The temperature detection device 4 is an infrared thermal imaging lens 4a arranged on the left and right sides of the fixing device 3. The lens cleaning device is a water wiper and a water spray head arranged in front of the infrared thermal imaging lens 4a, which are used for the protection and cleaning of the infrared thermal imaging lens 4a (not drawn in the figure). When water stains appear on the infrared thermal imaging lens 4a, the system drives the water wiper to clean the water stains on the infrared thermal imaging lens 4a. When there is dirt on the infrared thermal imaging lens 4a, the system drives the water spray head to spray water on the infrared thermal imaging lens 4a and then drives the water wiper to clean it.

[0059] refer to Figure 1 and Figure 2 As shown, the spray blowing device 5 is a liquid spray head Ⅰ5a and an air spray head 5b arranged on the left and right sides of the fixing device 3. The liquid spray head Ⅰ5a and the air spray head 5b are connected to the air source and liquid source of the die-casting machine B through the air pipe 5y and the liquid pipe 5z. Figure 3 As shown, a control valve 51 is provided on the liquid ejecting head Ⅰ5a.

[0060] Figure 2 As shown, the infrared thermal imaging lens 4a arranged on the right side of the fixing device 3 is used for detecting the temperature of the front mold B1 of the die casting mold, the liquid spray head Ⅰ5a is used for spraying liquid to cool the front mold B1 of the die casting mold, and the air spray head 5b is used for blowing and drying the front mold B1 of the die casting mold. Figure 1 As shown, the infrared thermal imaging lens 4a arranged on the left side of the fixing device 3 is used for detecting the temperature of the rear mold B2 of the die casting mold, the liquid spray head Ⅰ5a is used for cooling the rear mold B2 of the die casting mold by spraying liquid, and the air spray head 5c is used for blowing and air-drying the rear mold B2 of the die casting mold. The liquid spray heads Ⅰ5a and air spray heads 5b arranged in arrays on the left and right sides of the fixing device 3 are connected to the air source and liquid source of the die casting machine B through the air pipe head 5z and the liquid pipe head 5y. A control valve 2k is provided on the liquid spray head Ⅰ51, and the amount of liquid spray required for cooling the front mold B1 and the rear mold B2 of the die casting mold is controlled by the control valve 51 provided on the liquid spray head Ⅰ5a (refer to Figure 3 shown).

[0061] The operation control unit includes a thermal imaging recognition program, a temperature value calculation program, a movement trajectory calculation and driving program of the motion mechanism, an opening and closing control program of the spray blowing device, a gas-liquid external spray volume control program, a data information external display driving program, a control parameter adjustment program and a cooling effect detection program.

[0062] The thermal imaging recognition program is used to drive the infrared thermal imaging lens to identify the temperature difference between the front and rear mold surface areas of the die-casting mold. The temperature value calculation program is used to calculate the specific temperature value between the temperature difference between the front and rear mold surface areas of the die-casting mold. The movement trajectory calculation and driver program is used to calculate the movement trajectory of the fixing device and the temperature detection device set on the fixing device, the spray blowing device and the movement of the driving motion mechanism. The opening and closing control program is used to control the closing of the spray blowing device during the spraying gas and liquid process. The gas-liquid external spray volume control program is used to control the spray blowing device during the spraying gas and liquid spray volume control. The display driver program is used to drive the imaging device to display the heat map image and value of the die-casting mold surface temperature identified by the infrared thermal imaging lens. The control parameter adjustment program is used to adjust the upper and lower thresholds of the mold surface cooling target temperature. The cooling effect detection program is the system's driver for the die-casting mold cooling effect detection program.

[0063] The intelligent liquid spray cooling system for the mold in the die casting process of the present invention is referred to Figure 1 and Figure 2 As shown, the spraying and blowing device 5 of the hardware unit also includes a liquid spray head II 5c. The liquid spray head II 5c is respectively arranged on the left and right sides of the fixing device 3. Figure 3 As shown, the spray head II5c is provided with a control valve 51. The spray head II5c is used to spray the mold release agent into the product position Ba cavity of the die casting front mold B1 and the die casting back mold B2. The mold release agent spray amount required by the die casting front mold B1 and the back mold B2 is controlled by the control valve 51 (refer to Figure 3 shown).

[0064] refer to Figure 1 and Figure 2 As shown, the liquid spray head Ⅰ5a sprays the release agent mixture to cool down the front mold B1 and the back mold B2 of the mold while completing the spraying of the release agent.

[0065] refer to Figure 1 and Figure 2 As shown, the liquid spray head Ⅰ5a sprays cooling water to cool down the front mold B1 and the rear mold B2 of the mold, and the liquid spray head Ⅱ5c sprays the release agent to complete the spraying of the release agent on the front mold B1 and the rear mold B2 of the mold.

[0066] The intelligent liquid spray cooling system for the mold in the die casting process of the present invention is referred to Figure 3 As shown, the liquid jet head I5a and the liquid jet head II5c of the hardware unit are provided with a telescopic component 52, which is arranged on the fixing device 3, and the liquid jet head I5a and the liquid jet head II5c are arranged on the left and right sides of the fixing device 3 through the telescopic component 52. The telescopic component 52 drives the liquid jet head I5a and the liquid jet head II5c to telescopically move forward and backward outside the fixing device 3.

[0067] The intelligent liquid spray cooling system for the mold in the die casting process of the present invention is referred to Figure 3 As shown, the infrared thermal imaging lens 4a is provided with a rotating component 53, which is arranged on the fixing device 3, and the infrared thermal imaging lens 4a is arranged on the left and right sides of the fixing device 3 through the rotating component 53. The rotating component 53 drives the infrared thermal imaging lens 4a to swing axially on the fixing device 3.

[0068] The intelligent liquid spray cooling and temperature reduction system for the mold in the die-casting process of the present invention, wherein the motion mechanism is either a servo spray machine drive mechanism or a six-axis freedom robot.

[0069] Specific Figure 1 and Figure 2 As shown, the motion mechanism 1 of the hardware unit A is a five-axis manipulator, and the fixing device 3 is suspended at the forearm end of the five-axis manipulator. The fixing device 3, infrared thermal imaging lens 4a, liquid spray head Ⅰ5a, air spray head 5b and liquid spray head Ⅱ5c of the hardware unit A reciprocate between the top of the die-casting machine B and the die-casting front mold B1 / die-casting rear mold B2 through the five-axis manipulator.

[0070] Specific Figure 1 and Figure 2 As shown, the imaging device 2 of the hardware unit A is a liquid crystal display screen. The system converts the infrared heat signals and temperature values ​​of the regional temperature difference on the surfaces of the front mold B1 and the back mold B2 of the die-casting machine B recognized by the infrared thermal imaging lens 4a into images and graphics that can be distinguished by human vision and displayed externally by the imaging device 2.

[0071] Further Figure 1 Figure 2 As shown, in the mold intelligent liquid spray cooling system in the die casting process of the present invention, the spray blowing device 5 also includes an infrared rangefinder 5d, and the infrared rangefinder 5d is arranged on the left and right sides of the fixture 3. The infrared rangefinder 5d on the left side of the fixture 3 is used to monitor the distance between the hardware unit A and the die casting mold and its rear mold B2, and the infrared rangefinder 5d on the right side of the fixture 3 is used to monitor the distance between the hardware unit A and the die casting mold and its front mold B1.

[0072] The cooling method of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0073] The intelligent liquid spraying cooling and temperature reduction system for a mold in a die-casting process of the present invention comprises the following steps.

[0074] The first step is to measure the temperature of the front and rear mold bodies of the die-casting mold after completing a die-casting product molding cycle ( Figure 4As shown). The motion trajectory calculation and driver drive the motion mechanism to move the fixture and the temperature detection device and the spray blowing device on the fixture to between the front mold and the rear mold of the mold. The system divides the front mold and the rear mold of the mold into a number of area units in a matrix according to the surface area size. The infrared thermal imaging lens on the hardware unit detects the temperature difference distribution of the area units on the surface of the front mold and the rear mold under the drive of the thermal imaging recognition program and forms a heat map. The system receives the infrared heat signal recognized by the lens and calculates the temperature values ​​of the corresponding area units on the surface of the front mold and the rear mold.

[0075] Specifically, the die-casting machine injects liquid metal into the mold cavity of the mold, and the molten metal is cooled and formed in the mold cavity. After the die-casting machine opens the mold, the formed metal die-casting is taken out of the mold cavity. Figure 5 As shown, the system drives the fixture 3 of the hardware unit A to move between the front mold B1 and the rear mold B2 of the die-casting machine, and simultaneously detects the temperature difference distribution of the surface areas of the front mold B1 and the rear mold B2 through the infrared thermal imaging lens 2b on the fixture 3. The system receives the infrared heat signal recognized by the infrared thermal imaging lens 2b and calculates the temperature values ​​of the temperature difference of the surface areas of the front mold B1 and the rear mold B2.

[0076] In the above-mentioned first step of measuring the die casting mold procedure, Figure 6 As shown, the infrared thermal imaging lens 2b senses the infrared radiation signals emitted by the surface of the front mold B1 and the back mold B2 of the object, and its built-in thermal imaging recognition program maps the areas with different temperature differences on the surface of the front mold B1 and the back mold B2 to different colors and forms a heat map. The higher the temperature in the heat map, the darker and brighter the color is, and vice versa. The processor in the system calculates the temperature values ​​of the temperature difference heat map of the surface area of ​​the front mold B1 and the back mold B2 of the die-casting mold through the color and brightness in the heat map.

[0077] The second step is to calculate the amount of coolant required to cool each temperature value of the temperature difference thermal map of the front and rear mold surfaces of the die-casting mold to the initial preheating temperature threshold of the mold ( Figure 4 When part or all of the temperature values ​​of the surface area unit of the front mold and the rear mold exceed the mold target temperature threshold, the system intelligently calculates the spraying time and spraying amount required for the measured temperature in the surface area unit of the front mold and the rear mold to drop to the target temperature based on the difference between the actual measured data of the mold and the target temperature data plus the time coefficient.

[0078] refer to Figure 5 Figure 6As shown, the temperature numerical calculation program in the system is set with the target temperature (threshold) required for the initial preheating of the front mold B1 and the rear mold B2 of the die-casting mold. When part or all of the temperature values ​​(actual measurement) of the temperature difference heat map of the surface area of ​​the front mold B1 or the rear mold B2 exceed the threshold preset by the system, the system calculates the amount of liquid sprayed when cooling to the threshold according to the area where the temperature of the front mold B1 and the rear mold B2 exceeds the threshold. The spraying parameters (spraying time and spraying amount) in the unit are calculated based on the difference between the measured data and the target temperature data in the actual production of the mold plus the time coefficient (the time coefficient 1 of the spraying amount and the spraying time to the mold temperature drop). After the calculation parameters are implemented, the re-measured temperature data is compared with the expected temperature data, and the corresponding time coefficient 1 is adjusted according to the data difference. The area where the temperature of the surface area of ​​the front mold B1 and the rear mold B2 exceeds the threshold temperature has a larger amount of liquid sprayed, and conversely, the area where the temperature of the surface area is lower than the threshold does not need to be sprayed.

[0079] The third step is to spray liquid. The nozzles set on the hardware unit spray liquid on the surfaces of the front mold and the back mold ( Figure 4 The mold is divided into unit areas in a matrix format, and the up and down and left and right control of the nozzles can be realized based on the matrix to match the number of nozzles with the unit area.

[0080] refer to Figure 5 Figure 6 As shown, the fixture 3 of the hardware unit is provided with a plurality of liquid spray heads Ⅰ5a, which correspond to different surface temperature areas of the front mold B1 and the rear mold B2 respectively. The system drives the liquid spray heads Ⅰ5a to spray liquid on the surfaces of the front mold B1 and the rear mold B2 at the same time according to the liquid spray amount calculated in the second step, and the liquid spray amount required for each area on the surface of the front mold B1 and the rear mold B2 of the die-casting mold is controlled by the liquid spray heads Ⅰ5a, and the areas of the front mold B1 and the rear mold B2 that are higher than the initial preheating temperature are cooled by the cooling liquid sprayed on their surfaces.

[0081] In the above-mentioned third liquid spraying step of the intelligent liquid spraying cooling system for molds in the die-casting process of the present invention, the gas-liquid external spraying volume control program drives the liquid spraying head I to control the liquid spraying volume, and there are the following two modes.

[0082] 1) The amount of liquid sprayed is controlled by the duration of liquid spraying. All liquid spray heads Ⅰ spray liquid to the areas with different temperatures on the surfaces of the front mold and the rear mold at the same time and at the same flow rate. The cooling speed of the front mold and the rear mold of the die-casting mold is controlled by the length of the liquid spraying time of different liquid spray heads, so that the temperatures of the front mold and the rear mold of the die-casting mold drop to the initial preheating temperature at the same time. The nozzle with relatively high temperature in different areas of the surfaces of the front mold and the rear mold starts spraying first, and the nozzle with relatively low temperature in different areas of the surfaces of the front mold and the rear mold starts spraying later. After both stop spraying at the same time, the temperature of all areas of the surfaces of the front mold and the rear mold of the die-casting mold drops evenly to the initial preheating temperature. During the entire liquid spraying process, the liquid spraying time of the liquid spraying head with relatively low temperature in different areas of the surfaces of the front mold and the rear mold is shorter, and the liquid spraying time of the liquid spraying head with relatively high temperature in different areas of the surfaces of the front mold and the rear mold is longer.

[0083] 2) The amount of liquid sprayed is controlled by the difference in liquid spray flow rate. All liquid spray heads Ⅰ spray liquid at different temperature areas on the front and rear mold surfaces at the same time and at different flow rates. The cooling speed of the front and rear molds of the die-casting mold is controlled by the flow rate of the liquid sprayed by different liquid spray heads, so that the temperature of the front and rear molds of the die-casting mold drops to the initial preheating temperature at the same time. All the liquid spray heads located in different temperature areas on the front and rear mold surfaces spray liquid at the same time. The flow rate of the liquid spray heads with relatively low temperatures is low, and the flow rate of the liquid spray heads with relatively high temperatures in different areas on the front and rear mold surfaces is high. After both stop spraying liquid at the same time, the temperature of all areas on the front and rear mold surfaces of the die-casting mold drops evenly to the initial preheating temperature.

[0084] The fourth step is secondary temperature measurement. After completing the third step of the liquid spraying program, the system drives the infrared thermal imaging lens to detect the temperature values ​​of the front and rear mold surface areas again through the cooling effect detection program ( Figure 4 shown).

[0085] refer to Figure 5 Figure 6 As shown, after the system completes the third step of the liquid spraying procedure according to the liquid spraying amount calculated in the second step, the infrared thermal imaging lens 4a detects the temperature difference distribution of the surface areas of the front mold B1 and the back mold B2 again and calculates the temperature values ​​of the temperature difference of each area. When all the temperature values ​​are close to the threshold value preset by the system, the secondary temperature measurement is completed. Or when some or all of the temperature values ​​still exceed the threshold value preset by the system, the system drives the hardware unit to restart the third step of the liquid spraying process and repeats the third step of the secondary temperature measurement step once.

[0086] The fifth step is visual verification. The surface temperature of the front and rear molds after cooling is manually observed by a thermal imaging device ( Figure 4 shown).

[0087] refer to Figure 1 Figure 2As shown, after completing the fourth step of the secondary temperature measurement process, the infrared heat signals and regional temperature differences on the surfaces of the front mold B1 and the back mold B2 after cooling down, which are identified by the infrared thermal imaging lens 4a, are manually verified by the thermal imaging device 2. The system drives the imaging device 2 to display the thermal image of the surface of the front mold B1 and the back mold B2 through the display driver, and the color and brightness of the surface area of ​​the front mold B1 and the back mold B2 of the die-casting mold in the thermal image are manually observed by naked eyes to see whether they are consistent with the color and brightness of the thermal image of the initial preheating temperature preset by the system.

[0088] The sixth step is to blow air to dry the surface of the front and rear molds. Figure 4 shown).

[0089] refer to Figure 5 As shown, after the fifth step of visual verification, the system drives the air nozzle 5b of the spray blowing device 5 on the hardware unit to blow away the cooling liquid remaining on the surface area of ​​the front mold B1 and the rear mold B2, and the cooling step is completed after the surface area of ​​the front mold B1 and the rear mold B2 is dry and free of liquid.

[0090] In the above-mentioned liquid spraying step of the intelligent liquid spraying cooling and temperature reduction system for molds in the die-casting process of the present invention, the cooling method also includes a step of spraying a release agent. The role of the release agent is to smoothly separate the cooled and formed die-casting product from the die-casting mold, thereby obtaining a smooth and flat die-casting product and ensuring that the mold can be used multiple times. The step of spraying a release agent has the following two implementation methods.

[0091] Embodiment 1 Figure 4 As shown, in the third step of the liquid spraying process, the system drives the liquid spray head Ⅰ of the spray blowing device to spray the release agent mixture through the spray volume control program. The release agent mixture completes the spraying of the release agent while cooling the mold.

[0092] Embodiment 2 Figure 4 As shown, after the sixth step of the air blowing and drying process is completed, the system drives the spray head II5c set on the spray blowing device 5 of the hardware unit through the spray volume control program to spray the mold release agent on the product position Ba area of ​​the front mold B1 and the back mold B2. The spray blowing device 5 is provided with a plurality of spray heads II5c. The system sets the corresponding spray heads II5c according to the different shapes of the product positions Ba of the front mold B1 and the back mold B2 to spray the mold release agent thereon. The system can pre-set the amount of spray release agent according to the requirements of different temperatures and materials.

[0093] In the above-mentioned liquid spraying step of the intelligent liquid spraying cooling system for molds in the die-casting process of the present invention, the hardware unit has the following two states during the liquid spraying cooling process driven by the system.

[0094] 1) Figure 7In the static state shown, the area sprayed by the multiple spray heads Ⅰ5a arranged on the hardware unit spray blowing device 5 is larger than the surface areas of the front mold B1 and the rear mold B2 of the die-casting mold. The spray blowing device 5 is in a static state between the front mold B1 and the rear mold B2 in the third spraying step. The amount of spray required for cooling the surface areas of the front mold B1 and the rear mold B2 is controlled separately by the system driving the multiple spray heads Ⅰ5a arranged on the spray blowing device 2.

[0095] 2) Figure 8 In the motion state shown, the area where the liquid is sprayed by the multiple liquid spraying heads Ⅰ5a set on the hardware unit spraying and blowing device 5 cannot cover the various areas of the front mold B1 and the rear mold B2 surface of the die-casting mold, and the hardware unit is in a parallel or vertical linear motion state between the front mold B1 and the rear mold B2 in the third liquid spraying step. The amount of liquid sprayed required for cooling the various areas on the surface of the front mold B1 and the rear mold B2 is controlled by the liquid spraying head Ⅰ5a of the system driving the spraying and blowing device 5 during the movement by staying in the various areas on the surface of the front mold B1 and the rear mold B2.

[0096] According to the needs of different specifications and sizes of die-cast products, the thickness of the front and rear mold frames and mold cores of the die-casting mold are different, and the concave depth of the front mold cavity and the convex height of the rear mold core are different. When the hardware unit cools down the front mold and the rear mold at the same time, it is necessary to manually pre-set the distance parameters between the front mold and the rear mold in the system to ensure that the hardware unit moves to the accurate position between the front and rear molds. The hardware unit of the intelligent liquid spray cooling system for molds in the die-casting process described in the present invention also has a distance measurement function.

[0097] Specific Figure 5 Figure 7 Figure 8 As shown, the first temperature measurement step also includes a distance measurement program. When the hardware unit moves between the front mold and the rear mold of the die-casting machine, the infrared rangefinder 5d on the spray blowing device 5 of the hardware unit measures the distance between it and the front mold B1 and the rear mold B2. The system drives the spray blowing device 5 to move to the accurate position between the front mold B1 and the rear mold B2 according to the measured distance, so as to ensure that the infrared thermal imaging lens 4a and the liquid spray head Ⅰ5a on the front and rear sides of the spray blowing device 5 of the hardware unit are at the same distance from the front mold B1 and the rear mold B2.

[0098] When the volume of the die-cast product is large, the front model cavity of the molding die-casting mold is deeper and the rear model core is higher. The infrared thermal imaging lens is almost parallel to the concave side walls of the cavity and the convex side walls of the core. The infrared thermal imaging lens sometimes cannot identify the infrared heat signals of the concave side walls of the model cavity and the convex side walls of the model core.

[0099] To solve the above problems, in the third liquid spraying step of the intelligent liquid spraying cooling system for the mold in the die-casting process of the present invention, the concave side walls of the front mold model cavity of the die-casting mold and the convex side walls of the rear mold model core are swung by an infrared thermal imaging lens to identify the temperature difference distribution.

[0100] Specific references Figure 3 Figure 8 As shown, in the first temperature measurement step and / or the fourth secondary temperature measurement step of the cooling method, when the height difference between the concave side wall of the front mold B1 model cavity product position Ba and the convex side wall of the rear mold model cavity product position Ba is large, the infrared thermal imaging lens 4a swings axially in the front mold B1 and the rear mold surface B2 area, and the infrared thermal imaging lens 4a forms a certain angle with the concave side wall of the front mold B1 model cavity product position Ba and the convex side wall of the rear mold B2 model cavity product position Ba. By continuously adjusting the angle between the external thermal imaging lens 2b and the concave side wall of the cavity product position Ba and the convex side wall of the cavity product position Ba, the infrared thermal imaging lens 4a can detect the temperature difference distribution of the drop section of the concave side wall of the front mold B1 model cavity product position Ba and the convex side wall of the rear mold B2 model cavity product position Ba. The system receives the infrared heat signal recognized by the infrared thermal imaging lens 4a and calculates the temperature values ​​of the temperature difference between the concave side wall of the cavity product position Ba and the convex side wall of the cavity product position Ba.

[0101] When the volume of the die-cast product is large, the front model cavity of the molding die-casting mold is deeper and the rear model core is higher. The height difference between the front and rear mold surfaces is large. The distance between the spray head I and the highest and lowest points of the product position in the model cavity is greatly different. The coolant sprayed by the spray head I cannot directly contact the concave side walls, inner bottom wall and raised side walls of the model core of the model cavity.

[0102] To solve the above problems, in the third liquid spraying step of the intelligent liquid spraying cooling system for the mold in the die-casting process of the present invention, the liquid spray head I sprays liquid at equal distances according to the shape of the convex and concave surface of the front and rear molds of the corresponding die-casting mold.

[0103] Specific implementation method 1;

[0104] Specific references Figure 3 Figure 7As shown, the spray head Ⅰ5a arranged on the spray blowing device 5 of the hardware unit has a telescopic function. Under the control of the system, the spray head Ⅰ5a is arranged alternately and telescopically forward and backward along with the convex and concave drop of the product position Ba on the surface of the front mold B1 and the back mold B2. The spray head Ⅰ5a corresponding to the concave product position Ba of the front mold B1 extends longer from the spray blowing device 5, and the spray head Ⅰ5a corresponding to the convex product position Ba of the back mold B2 extends shorter from the spray blowing device 5. The spray head Ⅰ5a and its corresponding shape of the convex and concave drop surface of the product position Ba of the front mold B1 and the back mold B2 of the die-casting mold are equidistant for spraying and cooling.

[0105] Specific implementation method 2:

[0106] Specific references Figure 3 Figure 8 As shown, the spraying and blowing device 5 of the hardware unit moves along the convex and concave product position Ba surfaces of the front mold B1 and the back mold B2 of the die-casting mold in the XYZ three-axis direction under the drive of the system. The liquid spray head Ⅰ5a arranged on the spraying and blowing device moves to spray liquid and cool down according to the shape of the concave and convex drop surface of the front mold B1 product position Ba and the convex drop surface of the back mold B2 product position Ba according to the fixed distance between it and the concave and convex drop surface of the front mold B1 product position Ba and the convex drop surface of the back mold B2 product position Ba. Furthermore, the liquid spray head Ⅰ5a moves along the concave and convex drop surface of the front mold B1 product position Ba and the convex drop surface of the back mold B2 product position Ba.

[0107] During the process of producing die-cast products by a die-casting machine, high temperature often accumulates in the core part of the die-casting mold. In order to promote the overall uniform cooling of the front mold / rear mold of the die-casting mold to the initial preheating temperature, the intelligent liquid spray cooling system for the mold in the die-casting process described in the present invention includes a continuous heat tracking step.

[0108] Specifically, in the first temperature measurement step of the cooling system and its cooling method, when some temperature values ​​of the temperature difference of the front mold / rear mold surface area exceed multiples of the system threshold, in the third secondary temperature measurement step after the third step of liquid spraying is completed, the system drives the infrared thermal imaging lens to focus on and continuously track and monitor the areas where the surface temperatures of the front mold and the rear mold exceed the multiples of the threshold.

[0109] The above is a detailed introduction to the intelligent liquid spray cooling system for molds in the die casting process provided by the embodiment of the present invention. For those skilled in the art, according to the idea of ​​the embodiment of the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the present invention, and any changes made according to the design idea of ​​the present invention are within the scope of protection of the present invention.

Claims

1. Intelligent liquid spray cooling system for molds in die-casting process, including hardware unit and operation control unit; The hardware unit includes a motion mechanism, an imaging device, a fixing device connected to the motion mechanism, a temperature detection device arranged on the fixing device, a spraying and blowing device, and a lens cleaning device; The moving mechanism is arranged on the die-casting machine, and the fixing device, the temperature detection device, the spray blowing device and the lens cleaning device move between the top of the die-casting machine and the mold under the drive of the moving mechanism. The temperature detection device is an infrared thermal imaging lens arranged on the left and right sides of the fixing device, and the lens cleaning device is used for protecting and cleaning the infrared thermal imaging lens; The spraying and blowing device is a liquid spray head I and an air spray head arranged on the left and right sides of the fixing device. The liquid spray head I and the air spray head are connected to the air source and liquid source of the die-casting machine through an air pipe and a liquid pipe. A control valve is provided on the liquid spray head I. The operation control unit includes a thermal imaging recognition program, a temperature value calculation program, a movement trajectory calculation and driving program of the motion mechanism, an opening and closing control program of the spray blowing device, a gas-liquid external spray volume control program, a data information external display driving program, a control parameter adjustment program and a cooling effect detection program.

2. The intelligent liquid spray cooling system for molds in the die casting process according to claim 1 is characterized in that: The spraying and blowing device also includes a liquid spray head II respectively arranged on the left and right sides of the fixing device, and a control valve is arranged on the liquid spray head II; The liquid spray head I sprays the release agent mixture to cool the mold and complete the spraying of the release agent at the same time; or The liquid spray head I sprays cooling water to cool the mold, and the liquid spray head II sprays the release agent to complete the spraying of the release agent on the mold.

3. The intelligent liquid spray cooling system for molds in the die casting process according to claim 1 is characterized in that: The liquid jet head I and the liquid jet head II are provided with a telescopic component for driving them to move forward and backward, and the connection end of the infrared thermal imaging lens and the fixing device is provided with a rotating component for driving it to swing axially; The motion mechanism is either a servo sprayer drive mechanism or a six-axis freedom robot.

4. The intelligent liquid spray cooling system for molds in the die casting process according to claim 1, characterized in that: A cooling method also includes the following steps: S1 Temperature measurement - After the die-casting machine opens the mold, the system drives the hardware unit to move between the front mold and the rear mold of the die-casting machine. The system divides the mold into several area units in a matrix according to the surface area size. The infrared thermal imaging lens on the hardware unit simultaneously detects the temperature difference distribution of the area units on the surface of the front mold and the rear mold and forms a heat map. The system receives the infrared heat signal recognized by the lens and calculates the temperature values ​​of the corresponding area units on the surface of the front mold and the rear mold; S2 calculation: When part or all of the temperature values ​​of the surface area unit of the front mold and the rear mold exceed the mold target temperature threshold, the system intelligently calculates the spraying time and spraying amount required for the measured temperature in the surface area unit of the front mold and the rear mold to drop to the target temperature based on the difference between the actual measured data of the mold and the target temperature data plus the time coefficient; S3 spraying: the system drives the hardware unit to spray liquid to the areas with different surface temperatures of the front mold and the rear mold at the same time according to the spraying amount calculated by S2. The spraying amount required for each area with different temperatures is controlled by a number of spray heads I set on the hardware unit; S4 Secondary temperature measurement: After the system completes the S3 liquid spraying procedure, the infrared thermal imaging lens will once again simultaneously detect the temperature difference distribution of the front mold and rear mold surface areas and calculate the temperature value of the temperature difference in each area. When all temperature values ​​are close to the preheating threshold, the secondary temperature measurement is completed; or When some or all of the temperature values ​​still exceed the preheating threshold, the system drives the hardware unit to restart the S3 liquid spraying process and then repeat the S4 secondary temperature measurement step once; S5 Visual Verification: After completing the S4 secondary temperature measurement process, the infrared heat signals and regional temperature differences on the surfaces of the front and rear molds after cooling down, identified by the infrared thermal imaging lens, are manually verified by the thermal imaging device; S6 Air Blowing and Drying - After completing the S5 visual verification process, the system drives the air nozzle on the hardware unit to blow away the cooling liquid remaining on the surface area of ​​the front mold and the rear mold. The cooling step is completed after the surface area of ​​the front mold and the rear mold is dry and free of liquid.

5. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, characterized in that: The cooling method also includes a procedure of spraying a release agent; In the liquid spraying step S3, the liquid spraying head I sprays the mold release agent mixture to cool the mold and complete the spraying of the release agent at the same time; or In the S3 liquid spraying process, the liquid spray head I sprays cooling water to cool the mold. After the S6 air blowing and air drying process is completed, the liquid spray head II sprays the release agent to complete the spraying of the release agent on the mold.

6. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, characterized in that: The hardware unit in the liquid spraying S3 is in a stationary state, and the liquid spraying amount required for each area on the surface of the front mold and the rear mold is controlled by a plurality of liquid spraying heads I arranged on the system driving hardware unit; or The hardware unit in the S3 liquid spraying step is in a parallel or vertical linear motion state, and the amount of liquid sprayed required for cooling each area on the surface of the front mold and the rear mold is controlled by the liquid spray head I of the system-driven hardware unit by staying in each area on the surface of the front mold and the rear mold for different lengths of time during movement.

7. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, characterized in that: In the S1 temperature measurement and / or S4 secondary temperature measurement steps, when the height difference between the front mold and the rear mold surfaces is large, the infrared thermal imaging lens is swung axially perpendicular to the surface areas of the front mold and the rear mold to detect the temperature difference distribution of the surface difference section of the front mold and the rear mold. The system receives the infrared heat signal recognized by the lens and calculates the temperature values ​​of the temperature difference of the surface difference section of the front mold and the rear mold.

8. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, characterized in that: The S1 temperature measurement step also includes a distance measurement procedure; When the hardware unit moves between the front die and the rear die of the die-casting machine, the infrared rangefinder on the hardware unit measures the distance between it and the front die and the rear die. The system drives the hardware unit to move to the precise position between the front die and the rear die based on the measured distance.

9. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, characterized in that: In the S3 liquid spraying step, when the height difference between the front mold and the rear mold surface is large; The liquid spray head I arranged on the hardware unit is arranged alternately and retracted forward and backward according to the convex and concave drop difference between the front mold and the rear mold under the control of the system, and the liquid spray head I simultaneously sprays liquid to cool down the convex and concave drop difference surfaces of the front mold and the rear mold at equal intervals; or The liquid spray head I arranged on the hardware unit moves along the shape of the drop surface of the front mold and the rear mold to spray liquid for cooling under the control of the system.

10. The intelligent liquid spray cooling system for molds in the die casting process according to claim 4, It is characterized in that In the S1 temperature measurement step, when some temperature values ​​of the temperature difference between the surface areas of the front mold and the rear mold exceed multiples of the preheating threshold, in the S4 secondary temperature measurement step, the system drives the infrared thermal imaging lens to continuously track and monitor the areas where the surface temperatures of the front mold and the rear mold exceed multiples of the preheating threshold.

Images