Equipment and method for controlling temperature balance of die-casting die

Abstract

The embodiment of the invention belongs to the technical field of die-casting die temperature balance. The invention relates to equipment and a method for controlling temperature balance of a die-casting die. The equipment for controlling the temperature balance of the die-casting die comprises a rack and a split box, a temperature adjusting part is arranged in the rack, a control cabinet is arranged on the front face of the rack, a control system is arranged in the control cabinet, and the control system is used for controlling the output temperature of the temperature adjusting part; the control system comprises a PLC module installed in a control cabinet, and a first communication interface connected with the PLC module is installed on one side of the control cabinet. By means of the arranged control system, accurate control over the temperature adjusting part is achieved, various problems caused by too high or too low mold temperature are avoided, in addition, temperature monitoring and feedback of the mold are achieved through the temperature sensor, it is ensured that the mold temperature is always kept within the optimal range, and the qualified rate and production efficiency of products are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature balance of die casting dies, and more specifically, to a device and method for controlling the temperature balance of a die casting dies. Background Art

[0002] In the die-casting process, the thermal balance control of the die-casting mold is crucial to improving the quality of die-casting parts and ensuring continuous production. However, the traditional die-casting mold temperature control method has obvious defects. When the mold temperature is too high, it will not only cause the mold to burn and crack prematurely, but also cause serious wear of the slider and ejector and other active mechanisms, seriously affecting the service life of the mold. At the same time, the mold in a high temperature state will also cause unstable casting quality, deformation, dimensional deviation, pores and bubbles and other defects, reducing the qualified rate of the product. On the other hand, when the mold temperature is too low, the die-casting will have problems such as incomplete filling, uneven shrinkage, cold shut, poor surface finish, etc., which also affect the appearance and performance of the product.

[0003] In the prior art, the mold temperature is usually controlled by heating and cooling the mold with an oil temperature machine. The oil temperature machine heats the medium (heat transfer oil) to a set temperature, and then uses a magnetic pump to supply the heated heat transfer oil to the mold to heat the mold. When the mold needs to be cooled, the heat transfer oil returns to the oil temperature machine after completing the heat exchange with the mold, and the temperature is lowered by the cooling system and recycled again. Although this method can control the temperature of the mold to a certain extent, during the production process, the temperature of the output medium of the traditional oil temperature machine is a fixed temperature and the flow rate is a fixed flow rate, which cannot meet the current situation of temperature changes during the mold production process; when adjusting the parameters, the traditional oil temperature machine requires the process personnel to manually measure the mold temperature and set the output temperature in combination with the product molding situation. Therefore, we have made improvements on this and proposed a device and method for controlling the temperature balance of the die-casting mold. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is that the temperature of the output medium of the traditional oil temperature machine is a fixed temperature and the flow rate is a fixed flow rate, which cannot meet the current situation of temperature changes during mold production; when adjusting parameters, the traditional oil temperature machine requires process personnel to manually measure the mold temperature and set the output temperature based on the product molding situation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A device for controlling the temperature balance of a die-casting mold, comprising: a frame and a split box, wherein a temperature regulating unit is arranged in the frame, a control cabinet is arranged on the front of the frame, a control system is arranged in the control cabinet, and the control system is used to control the output temperature of the temperature regulating unit; the control system comprises a PLC module installed in the control cabinet, and a first communication interface connected to the PLC module is installed on one side of the control cabinet;

[0007] A temperature acquisition module and a communication module are provided in the split box. A second communication interface and several sensor interfaces are also provided on the split box. The several sensor interfaces are all connected to temperature sensors. The temperature acquisition module and the sensor interface are both connected to the second communication interface. The second communication interface is used to connect to the first communication interface to achieve communication. The temperature sensor is used to be arranged in the mold to detect the temperature of the mold.

[0008] As an improved mode of the present invention, the control system further comprises a relay module, a switch, a thermostat, a thyristor, a contactor and a frequency converter installed in a control cabinet, a touch screen is also installed on the front of the control cabinet, and an alarm is installed on the top of the rack;

[0009] Relay modules, switches, thermostats, thyristors, contactors, frequency converters, touch screens and alarms are all connected to the PLC module.

[0010] As an improved manner of the present invention, a plurality of protective plates are provided on the frame, and movable casters are installed at the bottom of the frame.

[0011] As an improved manner of the present invention, the temperature regulating unit includes an oil tank installed in the frame, the oil tank is connected to a refueling pipe, the refueling pipe passes through the protective plate and is fixedly connected to a refueling box.

[0012] As an improved manner of the present invention, two groups of temperature regulating components are arranged below the oil tank, and the two groups of temperature regulating components are respectively used to transport heat-conducting medium to the two molds.

[0013] As an improvement of the present invention, the temperature regulating component includes a return pipe, one end of the return pipe passes through the protective plate, and the other end of the return pipe is connected to a heating cylinder located below the oil tank. There are two heating cylinders, and the two heating cylinders are connected. Heating pipes are arranged in the two heating cylinders, and a first temperature sensing line is arranged on the outer surface of the heating cylinder.

[0014] As an improvement of the present invention, the temperature regulating member also includes two cooling cylinders connected to each other, and one of the cooling cylinders is connected to one of the heating cylinders. Cooling pipes are provided in both cooling cylinders, and the cooling pipes in the two cooling cylinders are connected by pipes.

[0015] As an improvement of the present invention, the lowest cooling cylinder is connected to a high-temperature magnetic pump through a pipeline, and a second temperature sensing line is arranged in the pipeline between the cooling cylinder and the high-temperature magnetic pump, and the output end of the high-temperature magnetic pump is connected to an output pipe, one end of the output pipe passes through a protective plate and is fixedly connected to a flow meter; the outer surfaces of the heating cylinder and the cooling cylinder are covered with thermal insulation cotton.

[0016] As an improved embodiment of the present invention, the input end of the high-temperature magnetic pump is further connected to a control valve, the control valve is connected to a discharge pipe and a first exhaust pipe, the discharge pipe is connected to the oil tank, the first exhaust pipe is connected to an exhaust valve, and a second exhaust pipe is connected between the exhaust valve and the oil tank;

[0017] The protective plate is also connected to a water inlet tee and a drainage tee, wherein both ends of the drainage tee are connected to the two top cooling pipes through pipes, and both ends of the water inlet tee are connected to cooling valves, and both cooling valves are connected to connecting pipes, and the two connecting pipes are respectively connected to the two cooling pipes located at the bottom.

[0018] A method for controlling the temperature balance of a die casting mold, using an apparatus for controlling the temperature balance of a die casting mold, comprising:

[0019] Before starting the machine, add an appropriate amount of heat transfer oil into the oil tank through the oil box and the oil pipe. The oil tank is equipped with visual and electronic dual liquid level gauges to prevent over- or under-filling. After filling, the high-temperature magnetic pump pumps the heat transfer oil to the entire system. The heat transfer oil enters the mold from the output pipe, and the flow rate is monitored by a flow meter. The heat transfer oil returns to the internal pipeline of the equipment from the return pipe to complete the cycle. When the system pressure is too high, the exhaust valve opens to release the pressure through the first exhaust pipe and the second exhaust pipe;

[0020] The temperature sensor installed inside the mold monitors the temperature inside the mold and near the parting surface. After the data is collected by the split box, it is transmitted through the sensor interface and the first communication interface. The upper and lower limit alarms are set for the mold temperature. When it exceeds the automatic adjustment range, an alarm is issued to prompt manual intervention at the production site;

[0021] Adjust the medium temperature, start the heating pipe or cooling pipe, the PLC module program has built-in PID temperature regulation, and starts heating or cooling at the right time until the mold temperature feedback is normal, so as to realize automatic temperature control; adjust the medium flow, the inverter changes the frequency according to the PLC module data model, changes the speed of the high-temperature magnetic pump, adjusts the medium flow, the flow meter monitors the system flow, and feeds back to the PLC module, and the PLC module determines whether the flow meets the standard.

[0022] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0023] In order to solve the problem that the temperature of the output medium of the traditional oil temperature machine is a fixed temperature and the flow rate is a fixed flow rate, which cannot meet the current situation of temperature changes in the mold production process; when adjusting the parameters, the traditional oil temperature machine requires process personnel to manually measure the mold temperature and set the output temperature based on the product molding situation. The present application realizes precise control of the temperature adjustment part through the control system set up to avoid various problems caused by excessively high or low mold temperature. In addition, the present invention also uses a temperature sensor to realize temperature monitoring and feedback of the mold to ensure that the mold temperature is always maintained within the optimal range, thereby improving the product qualification rate and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the device for controlling the temperature balance of the die-casting mold provided in this application;

[0025] Figure 2 A schematic diagram of the rear view structure of the device for controlling the temperature balance of the die-casting mold provided in the present application;

[0026] Figure 3 A schematic diagram of the front view of the device for controlling the temperature balance of a die-casting mold provided in the present application;

[0027] Figure 4 A schematic diagram of the structure of the oil tank of the device for controlling the temperature balance of the die-casting mold provided by the present application;

[0028] Figure 5 A schematic diagram of the structure of a cooling cylinder of a device for controlling the temperature balance of a die-casting mold provided in the present application;

[0029] Figure 6 A schematic diagram of the structure of a temperature regulating part of a device for controlling the temperature balance of a die-casting mold provided in the present application;

[0030] Figure 7 A schematic diagram of the structure of a temperature regulating part of a device for controlling the temperature balance of a die-casting mold provided in the present application;

[0031] Figure 8 A schematic diagram of the structure of a heating tube for controlling the temperature balance of a die-casting mold provided in the present application;

[0032] Fig. 9 A schematic diagram of the structure of a cooling pipe for controlling the temperature balance of a die-casting mold provided in the present application;

[0033] Fig.10 A schematic diagram of the structure of a split box for controlling the temperature balance of a die-casting mold provided in the present application;

[0034] Fig.11 A three-dimensional model diagram of the equipment for controlling the temperature balance of the die-casting mold provided in this application.

[0035] Indicated in the figure:

[0036] 11. Rack; 12. Fuel tank; 121. Refueling pipe; 122. Refueling box; 13. Control cabinet; 14. Protective plate; 15. Mobile casters; 16. First communication interface; 2. Return pipe; 201. Heating pipe; 202. Heating cylinder; 205. Insulation cotton; 301. Cooling pipe; 302. Cooling cylinder; 303. Cooling valve; 305. Connecting pipe; 306. Water inlet tee pipe; 307. Drainage tee pipe; 308. Output pipe; 309. Flow meter; 401. High-temperature magnetic pump; 404. Control valve ; 405, exhaust valve; 406, first exhaust pipe; 407, exhaust pipe; 410, second exhaust pipe; 501, PLC module; 502, relay module; 503, switch; 504, thermostat; 505, thyristor; 506, contactor; 507, inverter; 508, touch screen; 510, alarm; 601, split box; 602, temperature sensor; 603, temperature acquisition module; 604, communication module; 605, second communication interface; 606, sensor interface; 7, exhaust pipe. DETAILED DESCRIPTION

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit the present invention. Reference to "embodiments" herein means that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] Example 1, please refer to Figure 1-Figure 11The device for controlling the temperature balance of a die-casting mold of the present invention comprises: a frame 11 and a split box 601, wherein a temperature regulating part is arranged in the frame 11, a control cabinet 13 is arranged on the front of the frame 11, and a control system is arranged in the control cabinet 13, wherein the control system is used to control the output temperature of the temperature regulating part; the control system comprises a PLC module 501 installed in the control cabinet 13, and a first communication interface 16 connected to the PLC module 501 is installed on one side of the control cabinet 13;

[0042] The split box 601 is provided with a temperature acquisition module 603 and a communication module 604. The split box 601 is also provided with a second communication interface 605 and several sensor interfaces 606. The several sensor interfaces 606 are all connected to the temperature sensor 602. The temperature acquisition module 603 and the sensor interface 606 are both connected to the second communication interface 605. The second communication interface 605 is used to connect with the first communication interface 16 to achieve communication. The temperature sensor 602 is used to be set in the mold to detect the temperature of the mold. The present application realizes precise control of the temperature adjustment part through the control system set up to avoid various problems caused by the mold temperature being too high or too low. In addition, the present invention also uses the temperature sensor 602 to realize the temperature monitoring and feedback of the mold to ensure that the mold temperature is always kept within the optimal range, thereby improving the product qualification rate and production efficiency.

[0043] Further, such as Figure 3 As shown, the control system further includes a relay module 502, a switch 503, a thermostat 504, a thyristor 505, a contactor 506 and a frequency converter 507 installed in the control cabinet 13. A touch screen 508 is also installed on the front of the control cabinet 13, and an alarm 510 is installed on the top of the rack 11.

[0044] The relay module 502 , the switch 503 , the thermostat 504 , the thyristor 505 , the contactor 506 , the frequency converter 507 , the touch screen 508 and the alarm 510 are all connected to the PLC module 501 .

[0045] Further, such as Figure 1 As shown, a plurality of protective plates 14 are provided on the frame 11, and movable casters 15 are installed at the bottom of the frame 11. The movable casters 15 are provided to facilitate the movement of the whole frame.

[0046] It should be noted that for the convenience of description, Fig.11 A three-dimensional model diagram is used to assist understanding. The colors in the diagram make it easier to distinguish the structures, so they are retained.

[0047] Embodiment 2, the device for controlling the temperature balance of the die casting mold provided in embodiment 1 is further optimized, such as Figure 4-Figure 7As shown, the temperature regulating unit includes an oil tank 12 installed in the frame 11, and the oil tank 12 is connected to a refueling pipe 121, and the refueling pipe 121 passes through the protective plate 14 and is fixedly connected to a refueling box 122. The oil tank 12 is also connected to an exhaust pipe 7, and the exhaust pipe 7 is used to maintain the air pressure in the oil tank 12.

[0048] Furthermore, two groups of temperature regulating components are provided below the oil tank 12, and the two groups of temperature regulating components are respectively used to transport heat-conducting medium to the two molds to meet the use requirements.

[0049] Further, as shown in Figure Figure 4-Figure 8 As shown, the temperature regulating component includes a return pipe 2, one end of the return pipe 2 passes through the protective plate 14, and the other end of the return pipe 2 is connected to a heating cylinder 202 located below the oil tank 12. The number of the heating cylinders 202 is two, and the two heating cylinders 202 are connected. A heating pipe 201 is arranged in each of the two heating cylinders 202, and a first temperature sensing line is arranged on the outer surface of the heating cylinder 202, and the first temperature sensing line detects the temperature of the heating cylinder 202.

[0050] Further, as shown in Figure Figure 4-Figure 9 As shown, the temperature regulating member also includes two cooling cylinders 302 connected to each other, and one of the cooling cylinders 302 is connected to one of the heating cylinders 202. Cooling pipes 301 are provided in both cooling cylinders 302, and the cooling pipes 301 in the two cooling cylinders 302 are connected by pipelines.

[0051] Further, such as Figure 2 , Figure 4-Figure 6 as well as Figure 7 As shown, the lowermost cooling cylinder 302 is connected to the high-temperature magnetic pump 401 through a pipeline, and a second temperature-sensitive line is arranged in the pipeline between the cooling cylinder 302 and the high-temperature magnetic pump 401, and the output end of the high-temperature magnetic pump 401 is connected to the output pipe 308, and a pressure sensor is arranged in the output pipe 308, one end of the output pipe 308 passes through the protective plate 14 and is fixedly connected to a flow meter 309; the outer surfaces of the heating cylinder 202 and the cooling cylinder 302 are coated with thermal insulation cotton 205, and the heat-conducting oil enters the heating cylinder 202 through the return pipe 2 and contacts with the heating pipe 201. If the temperature is too low, it is heated by the heating pipe 201, and the heat-conducting oil in the heating cylinder 202 enters the cooling cylinder 302. If the temperature is too high, it is cooled by the cooling pipe 301, and then transported to the high-temperature magnetic pump 401, and then transported to the output pipe 308 through the high-temperature magnetic pump 401.

[0052] Further, such as Figure 4-Figure 7As shown, the input end of the high-temperature magnetic pump 401 is also connected to a control valve 404, the control valve 404 is connected to a discharge pipe 407 and a first exhaust pipe 406, the discharge pipe 407 is connected to the oil tank 12, the first exhaust pipe 406 is connected to an exhaust valve 405, and a second exhaust pipe 410 is connected between the exhaust valve 405 and the oil tank 12. When the pressure is too high, the exhaust valve 405 opens, and the excess oil pressure flows back to the oil tank 12 through the first exhaust pipe 406, the exhaust valve 405 and the second exhaust pipe 410. The discharge pipe 407 can directly discharge the heat transfer oil in the oil tank 12 through the control valve 404 and the high-temperature magnetic pump 401 to achieve the replacement of the heat transfer oil;

[0053] The protective plate 14 is also connected to a water inlet tee 306 and a drainage tee 307, wherein both ends of the drainage tee 307 are connected to the two top cooling pipes 301 through pipes, and both ends of the water inlet tee 306 are connected to cooling valves 303, and both cooling valves 303 are connected to connecting pipes 305, and the two connecting pipes 305 are respectively connected to the two cooling pipes 301 at the bottom, and cold water is transported to the cooling pipes 301 through the water inlet tee 306, the cooling valves 303, and the connecting pipes 305, and then discharged through the drainage tee 307, and the cooling valves 303 control the on-off of the cold water.

[0054] Embodiment 3, a method for controlling the temperature balance of a die-casting mold, using a device for controlling the temperature balance of a die-casting mold, comprising:

[0055] Before starting the machine, add a proper amount of heat transfer oil into the oil tank 12 through the oil box 122 and the oil pipe 121. The oil tank 12 is provided with a visual and electronic dual level gauge to prevent over-filling or under-filling. After filling, the high-temperature magnetic pump 401 pumps the heat transfer oil to the entire system, and the heat transfer oil enters the mold from the output pipe 308. The flow rate is monitored by the flow meter 309. The heat transfer oil returns to the internal pipeline of the equipment from the return pipe 2 to complete the cycle. When the system pressure is too high, the exhaust valve 405 is opened to release the pressure through the first exhaust pipe 406 and the second exhaust pipe 410;

[0056] The temperature sensor 602 installed inside the mold monitors the temperature inside the mold and near the parting surface. After the data is collected by the split box, it is transmitted through the sensor interface 606 and the first communication interface 16. The upper and lower limit alarms are set for the mold temperature. When it exceeds the automatic adjustment range, an alarm is issued to prompt manual intervention at the production site;

[0057] The medium temperature is adjusted, the heating tube 201 or the cooling tube 301 is started, the PLC module 501 program has a built-in PID temperature adjustment, and the heating or cooling is started at the right time until the mold temperature feedback is normal, thus realizing automatic temperature control;

[0058] The medium flow is adjusted. The frequency converter 507 changes the frequency according to the data model of the PLC module 501, changes the speed of the high-temperature magnetic pump 401, adjusts the medium flow, and the flow meter 309 monitors the system flow and feeds back to the PLC module 501. The PLC module 501 determines whether the flow meets the standard.

[0059] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A device for controlling the temperature balance of a die casting mold, characterized in that: include: A frame (11) and a split box (601), wherein a temperature regulating unit is arranged in the frame (11), a control cabinet (13) is arranged on the front of the frame (11), a control system is arranged in the control cabinet (13), and the control system is used to control the output temperature of the temperature regulating unit; the control system comprises a PLC module (501) installed in the control cabinet (13), and a first communication interface (16) connected to the PLC module (501) is installed on one side of the control cabinet (13); The split box (601) is provided with a temperature acquisition module (603) and a communication module (604). The split box (601) is also provided with a second communication interface (605) and a plurality of sensor interfaces (606). The plurality of sensor interfaces (606) are all connected to a temperature sensor (602). The temperature acquisition module (603) and the sensor interface (606) are both connected to the second communication interface (605). The second communication interface (605) is used to connect to the first communication interface (16) to achieve communication. The temperature sensor (602) is used to be arranged in the mold to detect the temperature of the mold.

2. The device for controlling the temperature balance of a die casting mold according to claim 1, characterized in that: The control system further comprises a relay module (502), a switch (503), a temperature controller (504), a thyristor (505), a contactor (506) and a frequency converter (507) installed in a control cabinet (13); a touch screen (508) is also installed on the front of the control cabinet (13); and an alarm (510) is installed on the top of the rack (11); The relay module (502), the switch (503), the temperature controller (504), the thyristor (505), the contactor (506), the frequency converter (507), the touch screen (508) and the alarm (510) are all connected to the PLC module (501).

3. The device for controlling the temperature balance of a die casting mold according to claim 2, characterized in that: A plurality of protective plates (14) are arranged on the frame (11), and movable casters (15) are installed at the bottom of the frame (11).

4. The device for controlling the temperature balance of a die casting mold according to claim 3, characterized in that: The temperature regulating unit comprises an oil tank (12) installed in a frame (11); the oil tank (12) is connected to a refueling pipe (121); the refueling pipe (121) passes through a protective plate (14) and is fixedly connected to a refueling box (122).

5. The device for controlling the temperature balance of a die casting mold according to claim 4, characterized in that: Two groups of temperature regulating components are arranged below the oil tank (12), and the two groups of temperature regulating components are used to transport heat-conducting medium to the two molds respectively.

6. The device for controlling the temperature balance of a die casting mold according to claim 5, characterized in that: The temperature regulating component comprises a return pipe (2), one end of the return pipe (2) passes through a protective plate (14), and the other end of the return pipe (2) is connected to a heating cylinder (202) located below the oil tank (12). There are two heating cylinders (202), and the two heating cylinders (202) are connected to each other. A heating pipe (201) is arranged in each of the two heating cylinders (202), and a first temperature sensing line is arranged on the outer surface of the heating cylinder (202).

7. The device for controlling the temperature balance of a die casting mold according to claim 6, characterized in that: The temperature regulating member further comprises two cooling cylinders (302) which are interconnected, and one of the cooling cylinders (302) is connected to one of the heating cylinders (202). A cooling pipe (301) is provided in each of the two cooling cylinders (302), and the cooling pipes (301) in the two cooling cylinders (302) are connected via a pipeline.

8. The device for controlling the temperature balance of a die casting mold according to claim 7, characterized in that: The lowermost cooling cylinder (302) is connected to a high-temperature magnetic pump (401) via a pipeline, and a second temperature sensing line is provided in the pipeline between the cooling cylinder (302) and the high-temperature magnetic pump (401), and the output end of the high-temperature magnetic pump (401) is connected to an output pipe (308), one end of the output pipe (308) passes through a protective plate (14) and is fixedly connected to a flow meter (309); and thermal insulation cotton (205) is coated between the outer surfaces of the heating cylinder (202) and the cooling cylinder (302).

9. The device for controlling the temperature balance of a die casting mold according to claim 8, characterized in that: The input end of the high-temperature magnetic pump (401) is also connected to a control valve (404), the control valve (404) is connected to a discharge pipe (407) and a first exhaust pipe (406), the discharge pipe (407) is connected to an oil tank (12), the first exhaust pipe (406) is connected to an exhaust valve (405), and a second exhaust pipe (410) is connected between the exhaust valve (405) and the oil tank (12); The protective plate (14) is also connected to a water inlet tee pipe (306) and a water discharge tee pipe (307), wherein two ends of the water discharge tee pipe (307) are respectively connected to the two cooling pipes (301) at the top through pipes, and two ends of the water inlet tee pipe (306) are both connected to cooling valves (303), and the two cooling valves (303) are both connected to connecting pipes (305), and the two connecting pipes (305) are respectively connected to the two cooling pipes (301) at the bottom.

10. A method for controlling the temperature balance of a die casting mold, using the device for controlling the temperature balance of a die casting mold as claimed in claim 9, characterized in that: include: Before starting the machine, add an appropriate amount of heat transfer oil into the oil tank (12) through the oil filling box (122) and the oil filling pipe (121). The oil tank (12) is provided with a visual and electronic dual liquid level gauge to prevent over-filling or under-filling. After filling, the high-temperature magnetic pump (401) pumps the heat transfer oil to the entire system. The heat transfer oil enters the mold from the output pipe (308), and the flow rate is monitored by the flow meter (309). The heat transfer oil returns to the internal pipeline of the equipment from the return pipe (2) to complete the cycle. When the system pressure is too high, the exhaust valve (405) is opened to release the pressure through the first exhaust pipe (406) and the second exhaust pipe (410); The temperature sensor (602) installed inside the mold monitors the temperature inside the mold and near the parting surface. After the data is collected by the split box, it is transmitted through the sensor interface (606) and the first communication interface (16). The upper and lower limit alarms are set for the mold temperature. When it exceeds the automatic adjustment range, an alarm is issued to prompt manual intervention at the production site; The medium temperature is adjusted, the heating pipe (201) or the cooling pipe (301) is started, and the PLC module (501) program has a built-in PID temperature adjustment, and the heating or cooling is started at the right time until the mold temperature feedback is normal, thereby realizing automatic temperature control; The medium flow is adjusted, the frequency converter (507) changes the frequency according to the data model of the PLC module (501), changes the speed of the high-temperature magnetic pump (401), adjusts the medium flow, the flow meter (309) monitors the system flow, and feeds back to the PLC module (501), and the PLC module (501) determines whether the flow meets the standard.

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