Rapid cooling device for die-casting die

Abstract

The utility model discloses a die-casting die rapid cooling device which comprises a water supply station assembly, a die, a water return tank, a water supply valve assembly, a water return valve assembly and a high-speed cooling station assembly. The water supply station assembly comprises a cooling water tank, a cavity cooling pipeline and a pouring gate, a water inlet of the sprue spreader cooling pipeline is connected with a cooling water source through a water supply valve assembly, a water outlet is connected with a water return tank through a water return valve assembly, and a water outlet of the cooling water tank is connected with the pouring gate and a water inlet of the sprue spreader cooling pipeline; the high-speed cooling station assembly comprises a plurality of vacuum tanks, air inlets of the vacuum tanks are provided with exhaust pipes and water inlet pipes respectively, the other ends of the water inlet pipes are connected with water outlets of the pouring gate and the sprue spreader cooling pipeline through water return valve assemblies, and water drainage pipes are arranged on water drainage ports of the vacuum tanks. According to the utility model, the die can be efficiently cooled in an energy-saving manner, the cooling process is controllable, safe, reliable and quick in response, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold cooling, in particular to a rapid cooling device for die-casting molds. Background Art

[0002] In the prior art, the cooling methods for molds are usually direct use of circulating water cooling and use of a mold cooler for pressurized cooling. However, the above cooling methods all have the following problems:

[0003] 1. The cooling water uses circulating cooling water, and the cooling capacity of the mold runner is insufficient, the dwell time is relatively long, and spraying is still required to enhance cooling after mold opening, resulting in poor cooling capacity and long die-casting cycle time.

[0004] 2. Using the same dwell time in summer makes the dwell time in winter production too long, resulting in low production efficiency in winter.

[0005] 3. The actual temperature state of the mold cannot be detected, and there is no detection of abnormal water flow in the cooling water, resulting in risks of mold damage and safety risks.

[0006] In addition, for the method of using a mold cooler for pressurized cooling, although the water pump pressure is increased and the cold water flow rate is increased, the water supply volume is large, the energy consumption during long-term operation is relatively high, and the temperature of the mold is high during production, and the sealing performance of the sealing material of the cooling pipeline decreases. In this case, too high cooling water pressure will increase the risk of mold leakage.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a rapid cooling device for die-casting molds, which can cool the mold efficiently and energy-savingly, and the cooling process is controllable, safe, reliable and has a fast response, greatly improving the production efficiency. Summary of the Utility Model

[0008] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0009] A rapid cooling device for die-casting molds includes a water supply station assembly, a mold, a return water tank, a water supply valve assembly, a return water valve assembly and a high-speed cooling station assembly. It is characterized in that a cavity cooling pipeline, a runner and a sprue cooling pipeline are arranged in the mold;

[0010] The water supply station assembly includes a cooling water tank connected to a cooling water source. The water inlets of the cavity cooling pipeline, the runner and the sprue cooling pipeline are connected to the cooling water source through the water supply valve assembly, and the water outlets are connected to the return water tank through the return water valve assembly. The water outlet of the cooling water tank is connected to the water inlets of the runner and the sprue cooling pipeline;

[0011] The high-speed cooling station assembly includes a vacuum tank. There are two or more vacuum tanks. The air inlets of the vacuum tanks are respectively provided with an exhaust pipe and a water inlet pipe. A vacuum pump and an exhaust valve are arranged on the exhaust pipe. A water inlet valve is arranged on the water inlet pipe. The other end of the water inlet pipe is connected to the water outlet of the runner and the split cone cooling pipeline through a return water valve assembly. A drain port connected to a drain pipe is arranged on the vacuum tank. A drain valve and a drain pump are arranged on the drain pipe;

[0012] The return water valve assembly is used to control the on-off between the runner, the split cone cooling pipeline and the return water tank. The water supply valve assembly is used to control the on-off between the cavity cooling pipeline, the runner and the split cone cooling pipeline and the cooling water source respectively.

[0013] Preferably, it further includes a control module electrically connected to the water supply station assembly, the return water tank, the water supply valve assembly, the return water valve assembly and the high-speed cooling station assembly.

[0014] Preferably, it further includes a temperature detection assembly connected to the mold. The temperature detection assembly is electrically connected to the water supply valve assembly, the return water valve assembly and the high-speed cooling station assembly. The temperature detection assembly includes a cavity temperature sensor and a runner temperature sensor.

[0015] Preferably, the return water valve assembly includes a runner low-speed cooling return water valve and a flow sensor. The water outlets of the cavity cooling pipeline, the runner and the split cone cooling pipeline are respectively connected to the return water tank through return water branch pipes. Flow sensors are arranged on the return water branch pipes;

[0016] The return water branch pipe connected to the runner and the split cone cooling pipeline is connected to the return water tank through a return water main pipe. A runner low-speed cooling return water valve is arranged on the return water main pipe. The connection point between the water inlet pipe and the return water main pipe is located at one end of the runner low-speed cooling return water valve close to the return water branch pipe.

[0017] Preferably, it further includes a barrel and a shot rod connected to the mold. A barrel cooling pipeline and a shot rod cooling pipeline are respectively arranged on the barrel and the shot rod. The water inlets of the barrel cooling pipeline and the shot rod cooling pipeline are connected to the cooling water source or the cooling water tank through the water supply valve assembly. The water outlets are connected to the water inlet pipe or the return water tank through the return water valve assembly.

[0018] Preferably, the water supply valve assembly includes a runner low-speed cooling valve and a cavity low-speed cooling valve;

[0019] Both ends of the cavity low-speed cooling valve are respectively connected to the cavity cooling pipeline and the cooling water source; One end of the runner low-speed cooling valve is respectively connected to the runner, the split cone cooling pipeline and the high-speed cooling water supply main pipe, and the other end is connected to the cooling water source. The other end of the high-speed cooling water supply main pipe is connected to the cooling water tank. A check valve is arranged on the high-speed cooling water supply main pipe.

[0020] Preferably, a pressure sensor and a first liquid level sensor are provided on the vacuum tank. The pressure sensor is electrically connected to the exhaust valve and the drain valve, and the first liquid level sensor is electrically connected to the drain valve.

[0021] Preferably, a second liquid level sensor is provided on the cooling water tank, and a water filling valve electrically connected to the second liquid level sensor is provided at the water inlet of the cooling water tank.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] This utility model can efficiently and energy - savingly cool the mold. The cooling process is controllable, safe, reliable and has a fast response, greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the present utility model;

[0025] Wherein: water supply station assembly 1, mold 2, return water tank 3, water supply valve assembly 4, return water valve assembly 5, high - speed cooling station assembly 6, cooling water source 7, control module 8, temperature detection assembly 9, cooling water tank 11, cavity cooling pipeline 21, runner, runner and sub - gate cooling pipeline 22, runner low - speed cooling valve 41, cavity low - speed cooling valve 42, runner low - speed cooling return water valve 51, flow sensor 52, vacuum tank 61, cavity temperature sensor 91, runner temperature sensor 92, exhaust pipe 10, water inlet pipe 20, vacuum pump 30, exhaust valve 40, water inlet valve 50, drain pipe 60, drain valve 70, drain pump 80, return water branch pipe 90, return water main pipe 100, barrel 110, injection rod 120, high - speed cooling water supply main pipe 130, pressure sensor 140, first liquid level sensor 150, second liquid level sensor 160, water filling valve 170, barrel cooling pipeline 110a, injection rod cooling pipeline 120a. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the understanding of the disclosure of the present utility model is more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "front", "rear", "left", "right", "upper", "lower" and similar expressions used herein are only for the purpose of illustration.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used herein in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] Next, in conjunction with the accompanying drawings and specific embodiments, this utility model will be further described:

[0030] As Figure 1 shown, a rapid cooling device for a die-casting mold 2 includes a water supply station assembly 1, a mold 2, a water return tank 3, a water supply valve assembly 4, a water return valve assembly 5, and a high-speed cooling station assembly 6. A cavity cooling pipeline 21 and a runner and a sub-gate cooling pipeline 22 are arranged in the mold 2;

[0031] The water supply station assembly 1 includes a cooling water tank 11 connected to a cooling water source 7. The water inlets of the cavity cooling pipeline 21 and the runner and the sub-gate cooling pipeline 22 are connected to the cooling water source 7 through the water supply valve assembly 4, and the water outlets are connected to the water return tank 3 through the water return valve assembly 5. The water outlet of the cooling water tank 11 is connected to the water inlet of the runner and the sub-gate cooling pipeline 22;

[0032] The high-speed cooling station assembly 6 includes a vacuum tank 61. There are two or more vacuum tanks 61. Exhaust pipes 10 and water inlet pipes 20 are respectively arranged at the air inlets of the vacuum tanks 61. A vacuum pump 30 and an exhaust valve 40 are arranged on the exhaust pipe 10. A water inlet valve 50 is arranged on the water inlet pipe 20. The other end of the water inlet pipe 20 is connected to the water outlet of the runner and the sub-gate cooling pipeline 22 through the water return valve assembly 5. A drain port connected to a drain pipe 60 is arranged on the vacuum tank 61. A drain valve 70 and a drain pump 80 are arranged on the drain pipe 60;

[0033] The water return valve assembly 5 is used to control the on-off of the runner and the sub-gate cooling pipeline 22 and the water return tank 3, and the water supply valve assembly 4 is used to respectively control the on-off of the cavity cooling pipeline 21 and the runner and the sub-gate cooling pipeline 22 and the cooling water source 7.

[0034] In this embodiment, when the vacuum tank 61 is evacuated, the drain valve 70 and the water inlet valve 50 are closed, the exhaust valve 40 is opened, and the vacuum pump 30 operates. After the evacuation is completed, the exhaust valve 40 is closed to keep the vacuum tank 61 in a vacuum state. When rapid cooling is required, the water inlet valve 50 is opened. Under the action of the vacuum pressure, the vacuum negative pressure water diversion method is adopted to enable the cooling hot water that has absorbed heat through the runner, the flow splitting cone cooling pipeline 22 to quickly enter the vacuum tank 61. The process response is fast, realizing the rapid and efficient cooling of the runner and the flow splitting cone cooling pipeline 22.

[0035] When one of the vacuum tanks 61 is filled with cooling hot water, the system switches to another vacuum tank 61 to achieve continuous rapid cooling. During the process, under the action of the drain valve 70, the drain pump 80, the vacuum pump 30, and the exhaust valve 40, the vacuum tank 61 filled with cooling hot water can be drained and then evacuated for standby.

[0036] In this embodiment, when both the cavity cooling pipeline 21 and the runner and the flow splitting cone cooling pipeline 22 are in the low-speed cooling mode, under the control of the water supply valve assembly 4 and the return water valve assembly 5, the water inlets of the cavity cooling pipeline 21 and the runner and the flow splitting cone cooling pipeline 22 are both connected to the cooling water source 7, and the water outlets are connected to the return water tank 3. When the runner and the flow splitting cone cooling pipeline 22 are in the high-speed cooling mode, under the control of the water supply valve assembly 4 and the return water valve assembly 5, the water inlets of the runner and the flow splitting cone cooling pipeline 22 are both connected to the cooling water tank 11 and disconnected from the cooling water source 7, and the water outlets are both connected to the water inlet pipe 20 and disconnected from the return water tank 3.

[0037] In the above structure, by cooling the cavity and the runner of the mold 2 in a partitioned manner, the cavity cooling pipeline 21 with a small cooling requirement in the casting is configured with positive pressure low-speed cooling, and the runner and the flow splitting cone cooling pipeline 22 with a large cooling requirement in the casting are configured with positive pressure low-speed cooling and vacuum negative pressure rapid cooling, enabling the runner and the flow splitting cone cooling pipeline 22 to start rapid cooling during the mold retention stage, thus realizing the efficient and rapid cooling of the mold 2 with a fast response.

[0038] In addition, in this embodiment, by adopting the vacuum negative pressure water diversion method to cool the runner and the flow splitting cone cooling pipeline 22 during the mold retention stage, compared with the positive pressure water supply method, it can prevent the impact of the high pressure of the positive pressure water supply on the sealing elements of the cooling pipeline, effectively reducing the risk of water leakage in the mold 2.

[0039] In addition, in this embodiment, for the high-speed cooling station assembly 6, a drain pump 80 with a power of 1.5 Kw and a vacuum pump 30 with a power of 1.5 Kw are adopted. With such a configuration and structure, while enhancing the cooling capacity of the runner and the flow splitting cone cooling pipeline 22, compared with the existing mold cooling machine pressurized cooling method (high-pressure water supply pump 7.5 Kw), the energy consumption is reduced by 40% - 60%, effectively reducing the production energy consumption.

[0040] Further, as Figure 1 shown, in order to achieve automatic and controllable cooling of the mold 2, it further includes a control module 8 electrically connected to the water supply station assembly 1, the water return tank 3, the water supply valve assembly 4, the water return valve assembly 5, and the high-speed cooling station assembly 6.

[0041] Further, as Figure 1 shown, it further includes a temperature detection component connected to the mold 2. The temperature detection component is electrically connected to the water supply valve assembly 4, the water return valve assembly 5, and the high-speed cooling station assembly 6. The temperature detection component includes a cavity temperature sensor 91 and a bypass temperature sensor 92.

[0042] In this embodiment, the cavity temperature sensor 91 is used to detect the fixed mold cavity temperature and the moving mold cavity temperature of the mold 2, and the bypass temperature sensor 92 is used to detect the temperatures of the fixed mold bypass, the moving mold bypass, and the moving mold manifold cone.

[0043] The above structure can monitor and reflect the cooling condition of the casting runner in real time, and adjust the mold retention time according to the cooling capacity of the cooling water. That is, the opening or closing of the high-speed cooling of the runner and the manifold cone cooling pipeline 22 can be controlled according to the temperature of the bypass, so as to shorten the mold retention time in winter production and improve production efficiency.

[0044] In this embodiment, when the temperature of the mold 2 runner is close to the temperature of the mold 2 cavity and reaches the set value, the runner cooling pipeline is switched to low-speed cooling, so as to shorten the mold retention time (the mold retention time is reduced by 4 - 6 s). Moreover, no spraying is required for enhanced cooling after mold opening. Compared with directly using circulating water cooling, the die-casting cycle is reduced by 8 - 10 s, and compared with using a mold cooler for pressurized cooling, the die-casting cycle is reduced by 4 - 6 s.

[0045] In addition, when the cooling water is flowing normally, when the temperature detected by the bypass temperature sensor 92 is too high and exceeds the set value, the mold retention time will be automatically increased, and it is also possible to judge whether the casting runner is completely solidified according to the temperature, so as to prevent "explosion" of the casting runner and reduce the risk of damage to the mold 2.

[0046] Further, as Figure 1 shown, the water return valve assembly 5 includes a runner low-speed cooling water return valve 51 and a flow sensor 52. The water outlets of the cavity cooling pipeline 21 and the runner and manifold cone cooling pipeline 22 are respectively connected to the water return tank 3 through water return branch pipes 90, and flow sensors 52 are arranged on the water return branch pipes 90;

[0047] The return water branch pipe 90 connected to the runner and the diverter cone cooling pipeline 22 is connected to the return water tank 3 through the return water main pipe 100. A runner low-speed cooling return water valve 51 is provided on the return water main pipe 100. The connection point of the water inlet pipe 20 and the return water main pipe 100 is located at one end of the runner low-speed cooling return water valve 51 close to the return water branch pipe 90.

[0048] In this embodiment, when both the cavity cooling pipeline 21 and the runner and diverter cone cooling pipeline 22 are in the low-speed cooling mode, the runner low-speed cooling return water valve 51 is opened, and the cooling hot water flows into the return water tank 3; when both the runner and diverter cone cooling pipeline 22 are in the high-speed cooling mode, the runner low-speed cooling return water valve 51 is closed, and the corresponding cooling hot water is introduced into the vacuum tank 61 through the water inlet pipe 20.

[0049] In this embodiment, by configuring a flow sensor 52 for detecting the return water flow of each group of cooling pipelines, an alarm will be issued when the cooling is abnormal, reducing the risk of damage to the mold 2 and improving safety.

[0050] Further, as Figure 1 shown, in order to improve the cooling effect of the barrel 110 and the injection rod 120; it further includes a barrel 110 and an injection rod 120 connected to the mold 2. A barrel cooling pipeline 110a and an injection rod cooling pipeline 120a are respectively provided on the barrel 110 and the injection rod 120. The water inlets of the barrel cooling pipeline 110a and the injection rod cooling pipeline 120a are connected to the cooling water source 7 or the cooling water tank 11 through the water supply valve assembly 4, and the water outlets are connected to the water inlet pipe 20 or the return water tank 3 through the return water valve assembly 5.

[0051] In the above structure, by configuring the barrel cooling pipeline 110a and the injection rod cooling pipeline 120a with the same positive-pressure low-speed cooling and vacuum negative-pressure rapid cooling as the runner and diverter cone cooling pipelines, the barrel cooling pipeline 110a and the injection rod cooling pipeline 120a are enabled to start rapid cooling following the runner and diverter cone cooling pipeline 22 during the mold retention stage.

[0052] Further, as Figure 1 shown, in order to achieve zonal cooling of the cavity and runner of the mold 2 and effectively control the low-speed cooling water and the high-speed cooling water from entering the runner and diverter cone cooling pipelines in the low-speed cooling mode and the high-speed cooling mode respectively; the water supply valve assembly 4 includes a runner low-speed cooling valve 41 and a cavity low-speed cooling valve 42. The two ends of the cavity low-speed cooling valve 42 are respectively connected to the cavity cooling pipeline 21 and the cooling water source 7; one end of the runner low-speed cooling valve 41 is respectively connected to the runner and diverter cone cooling pipeline 22 and the high-speed cooling water supply main pipe 130, and the other end is connected to the cooling water source 7. The other end of the high-speed cooling water supply main pipe 130 is connected to the cooling water tank 11, and a check valve is provided on the high-speed cooling water supply main pipe 130.

[0053] Specifically, when the bypass and the shunt cone cooling pipelines start the low-speed cooling mode, both the runner low-speed cooling valve 41 and the cavity low-speed cooling valve 42 are opened. When switching to the high-speed cooling mode, the runner low-speed cooling valve 41 is closed, and the cavity low-speed cooling valve 42 is opened. At this time, the cooling water in the cooling water tank 11 serves as high-speed cooling water and quickly enters and flows out of the bypass and the shunt cone cooling pipelines under the action of vacuum negative pressure.

[0054] Furthermore, as Figure 1 shown, a pressure sensor 140 and a first liquid level sensor 150 are provided on the vacuum tank 61. The pressure sensor 140 is electrically connected to the exhaust valve 40 and the drain valve 70, and the first liquid level sensor 150 is electrically connected to the drain valve 70.

[0055] In this embodiment, during the vacuum pumping process, when the pressure value of the pressure sensor 140 reaches the set vacuum pressure value, the exhaust valve 40 is controlled to close, and the vacuum pump 30 stops working to complete the vacuum pumping.

[0056] During high-speed cooling, the water inlet valve 50 of one of the vacuum tanks 61 is opened, and the cooling hot water enters the vacuum tank 61. When the pressure value of the pressure sensor 140 reaches the set drain pressure value, the drain valve 70 is controlled to open, and the drain pump 80 works. When the first liquid level sensor 150 detects that the vacuum tank 61 is in a liquidless state, the drain valve 70 is controlled to close, and the drain pump 80 stops working.

[0057] When one of the vacuum tanks 61 is draining, negative pressure water diversion is carried out through the other vacuum tank 61 during high-speed cooling. When one of the vacuum tanks 61 finishes draining, it immediately enters the vacuum pumping state. Thus, through the alternating operation of the two vacuum tanks 61, vacuum negative pressure water diversion is achieved in the bypass and the shunt cone cooling pipelines during the high-speed cooling mode, with fast, efficient, and responsive cooling.

[0058] Furthermore, as Figure 1 shown, in order to achieve automatic water replenishment of the cooling water in the cooling water tank 11 and ensure the effective progress of high-speed cooling; a second liquid level sensor 160 is provided on the cooling water tank 11, and a water filling valve 170 electrically connected to the second liquid level sensor 160 is provided at the water inlet of the cooling water tank 11.

[0059] For those skilled in the art, various corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all such changes and deformations should fall within the protection scope of the claims of the utility model patent.

Claims

1. A rapid cooling device for a die-casting mold, comprising a water supply station assembly, a mold, a water return tank, a water supply valve assembly, a water return valve assembly and a high-speed cooling station assembly, characterized in that A cavity cooling pipeline, a runner, and a sprue bushing cooling pipeline are arranged inside the mold. The water supply station assembly includes a cooling water tank connected to a cooling water source. The inlets of the cavity cooling pipeline, the runner, and the sprue bushing cooling pipeline are connected to the cooling water source through a water supply valve assembly, and the outlets are connected to a return water tank through a return water valve assembly. The outlet of the cooling water tank is connected to the inlets of the runner and the sprue bushing cooling pipeline. The high-speed cooling station assembly includes vacuum tanks. There are two or more vacuum tanks. Exhaust pipes and water inlet pipes are respectively arranged at the air inlets of the vacuum tanks. A vacuum pump and an exhaust valve are arranged on the exhaust pipe. A water inlet valve is arranged on the water inlet pipe. The other end of the water inlet pipe is connected to the outlets of the runner and the sprue bushing cooling pipeline through a return water valve assembly. A drain port connected to a drain pipe is arranged on the vacuum tank. A drain valve and a drain pump are arranged on the drain pipe. The return water valve assembly is used to control the on-off of the runner and the sprue bushing cooling pipeline and the return water tank. The water supply valve assembly is used to respectively control the on-off of the cavity cooling pipeline, the runner, and the sprue bushing cooling pipeline and the cooling water source.

2. The rapid cooling device for a die-casting mold according to claim 1, characterized in that, It further includes a control module electrically connected to the water supply station assembly, the return water tank, the water supply valve assembly, the return water valve assembly, and the high-speed cooling station assembly.

3. A rapid cooling device for a die-casting mold according to claim 1, characterized in that, It further includes a temperature detection assembly connected to the mold. The temperature detection assembly is electrically connected to the water supply valve assembly, the return water valve assembly, and the high-speed cooling station assembly. The temperature detection assembly includes a cavity temperature sensor and a runner temperature sensor.

4. A rapid cooling device for a die-casting mold according to claim 1, characterized in that, The return water valve assembly includes a runner low-speed cooling return water valve and a flow sensor. The outlets of the cavity cooling pipeline, the runner, and the sprue bushing cooling pipeline are respectively connected to the return water tank through return water branch pipes. Flow sensors are arranged on all the return water branch pipes. The return water branch pipe connected to the runner and the sprue bushing cooling pipeline is connected to the return water tank through a return water main pipe. A runner low-speed cooling return water valve is arranged on the return water main pipe. The connection point of the water inlet pipe and the return water main pipe is located at one end of the runner low-speed cooling return water valve close to the return water branch pipe.

5. A rapid cooling device for a die-casting mold according to claim 1, characterized in that, It further includes a barrel and a shot rod connected to the mold. A barrel cooling pipeline and a shot rod cooling pipeline are respectively arranged on the barrel and the shot rod. The inlets of the barrel cooling pipeline and the shot rod cooling pipeline are connected to the cooling water source or the cooling water tank through a water supply valve assembly, and the outlets are connected to the water inlet pipe or the return water tank through a return water valve assembly.

6. The rapid cooling device for a die-casting mold according to claim 1, characterized in that, The water supply valve assembly includes a runner low-speed cooling valve and a cavity low-speed cooling valve. Both ends of the cavity low-speed cooling valve are respectively connected to the cavity cooling pipeline and the cooling water source. One end of the runner low-speed cooling valve is respectively connected to the runner, the sprue bushing cooling pipeline, and a high-speed cooling water supply main pipe, and the other end is connected to the cooling water source. The other end of the high-speed cooling water supply main pipe is connected to the cooling water tank. A check valve is arranged on the high-speed cooling water supply main pipe.

7. A rapid cooling device for a die-casting mold according to claim 1, characterized in that, A pressure sensor and a first liquid level sensor are arranged on the vacuum tank. The pressure sensor is electrically connected to the exhaust valve and the drain valve. The first liquid level sensor is electrically connected to the drain valve.

8. A rapid cooling device for a die-casting mold according to claim 6, characterized in that, A second liquid level sensor is arranged on the cooling water tank. A water filling valve electrically connected to the second liquid level sensor is arranged at the water inlet of the cooling water tank.

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