Cooling device and die-casting die

Abstract

The utility model provides a cooling device which is used for a die-casting die and comprises a water conveying pipe, a temperature monitor and an electromagnetic valve. The water conveying pipe is used for being embedded in the position where a casting thick part is formed in the die-casting die, one end of the water conveying pipeline is used for communicating with a water inlet pipe of the die-casting die, and the other end of the water conveying pipeline is used for communicating with a water outlet pipe of the die-casting die. The electromagnetic valve is arranged at the end, communicated with the water inlet pipe, of the water conveying pipeline. The temperature monitor is installed in the die-casting die and used for monitoring the temperature of the die-casting die. The temperature monitor is connected with the electromagnetic valve, and the electromagnetic valve is started when the temperature monitor monitors that the temperature of the die-casting die reaches a preset temperature value. The cooling device ensures uniform distribution of the temperature of the die-casting die by accurately controlling the flowing time of a cooling medium, and avoids heat accumulation at a thick part, so that the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of die casting technology, in particular to a cooling device and a die casting mold. BACKGROUND

[0002] In the die casting production process, the temperature of the mold is one of the key factors affecting the final forming quality of the product. Generally, the normal production temperature range of aluminum alloy die casting is between 180° and 250°, and if the mold temperature deviates from this temperature range, whether the temperature is too high or too low will affect the product quality. When the temperature is too high, it will cause the mold to burn, resulting in burns or cracks on the product, and even causing the product to be scrapped; and when the temperature is too low, it may cause cold separation flow lines, affecting the appearance quality of the product. Especially for the thick part of the product, because its cooling speed is slow, heat is easy to accumulate, resulting in local temperature being too high, and then causing defects such as mold burning and deformation.

[0003] To solve the above problems, the traditional technology usually sets a cooling waterway in the mold, and removes heat by circulating cooling medium, so as to control the mold temperature in the range of 180° to 250°. However, the traditional cooling method uses continuous water supply, which cannot accurately control the water supply time, resulting in uneven distribution of mold temperature, and it is difficult to effectively solve the problem of heat accumulation in the thick part. CONTENT OF THE INVENTION

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art, and to provide a cooling device and a die casting mold capable of controlling the flow time of cooling medium and ensuring the uniform temperature of the die casting mold.

[0005] The purpose of the present disclosure is achieved by the following technical solutions:

[0006] A cooling device, comprising: a water conveying pipeline, a temperature monitor and an electromagnetic valve;

[0007] The water conveying pipeline is used to be embedded in the position of the die casting mold where the thick part of the casting is formed, one end of the water conveying pipeline is used to communicate with the water inlet pipe of the die casting mold, and the other end of the water conveying pipeline is used to communicate with the water outlet pipe of the die casting mold;

[0008] The electromagnetic valve is arranged at the end of the water conveying pipeline communicating with the water inlet pipe;

[0009] The temperature monitor is installed in the die casting mold, the temperature monitor is used to monitor the temperature of the die casting mold, the temperature monitor is electrically connected with the electromagnetic valve, and the electromagnetic valve is used to be opened when the temperature monitor monitors that the temperature of the die casting mold reaches a preset temperature value.

[0010] In one embodiment, the cooling device further includes a relay, and the solenoid valve and the temperature monitor are both electrically connected to the relay. The relay is used to control the solenoid valve to open or close; the relay is used to control the solenoid valve to open when the temperature monitor detects that the temperature of the die-casting mold has reached a preset temperature value.

[0011] In one embodiment, the preset temperature value is 250°C.

[0012] In one embodiment, the water pipe is provided with a joint.

[0013] In one embodiment, there are two joints, namely a first joint and a second joint; the first joint and the second joint are respectively located at both ends of the water transport pipe, and the end of each joint away from the water transport pipe extends out of the die-casting mold. The water transport pipe is connected to the inlet pipe and the outlet pipe through the two joints respectively.

[0014] In one embodiment, the cooling device further includes a controller, the temperature monitor is electrically connected to the controller, and the relay is electrically connected to the controller.

[0015] This disclosure also provides a die-casting mold comprising: a fixed mold assembly, a moving mold assembly, a water inlet pipe, a water outlet pipe, and a cooling device as described in any of the above embodiments. The fixed mold assembly comprises a fixed mold blank and a fixed mold core, the moving mold assembly comprises a moving mold blank and a moving mold core, and the water pipe is embedded in at least one of the fixed mold core or the moving mold core. One end of the water pipe is connected to the water inlet pipe of the die-casting mold, and the other end of the water pipe is connected to the water outlet pipe of the die-casting mold.

[0016] In one embodiment, at least one of the fixed mold blank or the moving mold blank has a first mounting hole extending into the fixed mold core or the moving mold core, and a temperature monitor is installed in the first mounting hole.

[0017] In one embodiment, the cooling system has two temperature monitors, namely a first temperature monitor and a second temperature monitor; both the fixed mold blank and the moving mold blank have the first mounting hole; the first temperature monitor is installed in the first mounting hole of the fixed mold blank, and the second temperature monitor is installed in the first mounting hole of the moving mold blank.

[0018] In one embodiment, the water pipe is embedded in the fixed mold core, and a second mounting hole and a third mounting hole are respectively opened on both sides of the fixed mold core, with the two ends of the water pipe located at the second mounting hole and the third mounting hole respectively.

[0019] Compared with the prior art, this disclosure has at least the following advantages:

[0020] 1. The cooling device ensures uniform temperature distribution in the die-casting mold by precisely controlling the flow time of the cooling medium, avoiding heat accumulation in thicker areas, thereby improving product quality.

[0021] 2. The cooling system is also equipped with a temperature monitor to monitor the temperature of the die-casting mold in real time. The cooling system controls the opening and closing of the solenoid valve based on the temperature value of the temperature monitor, ensuring that the temperature of the die-casting mold is always maintained between 180℃ and 250℃. This avoids waste caused by continuous flow of cooling medium and excessive cooling of the mold, ensuring stable casting quality, extending the mold's service life, and improving production efficiency.

[0022] 3. The cooling device achieves automated control of the cooling medium flow by electrically connecting the temperature monitor to the solenoid valve, thereby improving production efficiency and reducing the labor intensity of workers. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a cooling device according to one embodiment;

[0025] Figure 2 for Figure 1 A cross-sectional view of the cooling device shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the cooling device from another perspective. Detailed Implementation

[0027] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0031] Please see Figures 1 to 3 This is a cooling device 10 according to an embodiment of the present invention, used for a die-casting mold 20. It includes a water pipe 100, a temperature monitor 200, and a solenoid valve 300. The water pipe 100 is embedded within the die-casting mold 20 at the location where the thick portion of the casting is formed. One end of the water pipe 100 is connected to the water inlet pipe 23 of the die-casting mold 20, and the other end is connected to the water outlet pipe 24 of the die-casting mold 20. The solenoid valve 300 is located at the end of the water pipe 100 connected to the water inlet pipe 23. The temperature monitor 200 is installed inside the die-casting mold 20 and is used to monitor the temperature of the die-casting mold 20. The temperature monitor 200 is electrically connected to the solenoid valve 300, which opens when the temperature of the die-casting mold 20 reaches a preset value as monitored by the temperature monitor 200.

[0032] The normal production temperature for aluminum alloy die casting is 180℃-250℃. In this embodiment, the preset temperature value is set to 250℃. Specifically, when the temperature monitor 200 reading is greater than 250°, the solenoid valve 300 is opened, allowing the cooling medium to flow into the water pipe 100 through the inlet pipe 23 to cool the thicker areas of the casting. When the temperature monitor 200 reading drops below 250°, the solenoid valve 300 is closed, stopping the flow of the cooling medium and thus stopping the cooling process.

[0033] In this embodiment, the cooling device 10 ensures uniform temperature distribution in the die-casting mold 20 by precisely controlling the flow time of the cooling medium, preventing heat accumulation in thicker parts of the casting and thus improving casting quality. Furthermore, the cooling device 10 is equipped with a temperature monitor 200 for real-time monitoring of the temperature of the die-casting mold 20. The cooling device 10 controls the opening and closing of the solenoid valve 300 based on the temperature value from the temperature monitor 200, ensuring the temperature of the die-casting mold 20 is consistently maintained between 180℃ and 250℃. This avoids waste caused by continuous cooling medium flow and mold overcooling, ensuring stable casting quality, extending mold lifespan, and improving production efficiency. Simultaneously, the cooling device 10 achieves automated control of the cooling medium flow by electrically connecting the temperature monitor 200 to the solenoid valve 300, improving production efficiency and reducing worker workload.

[0034] like Figures 1 to 3 As shown, in one embodiment, the cooling device 10 further includes a relay (not shown). The solenoid valve 300 and temperature monitor 200 are both electrically connected to the relay. The relay controls the opening and closing of the solenoid valve 300. The relay controls the solenoid valve 300 to open when the temperature of the die-casting mold 20, as monitored by the temperature relay 200, reaches a preset temperature value. Specifically, in this embodiment, the relay is a time relay. The time relay controls the opening and closing time of the solenoid valve 300 by setting a cycle. When the temperature monitor 200 reading is greater than 250°C, the time relay opens, opening the solenoid valve 300, and the cooling medium begins to flow. When the cycle of the time relay ends, the solenoid valve 300 closes, the cooling medium stops flowing, and cooling stops. This avoids waste and overcooling of the mold caused by continuous cooling medium flow, ensuring stable casting quality, extending the service life of the die-casting mold 20, and improving production efficiency. It should be noted that the cycle of the time relay is obtained through multiple temperature changes and time tests of the temperature monitor 200.

[0035] like Figures 1 to 3 As shown, in one embodiment, the water pipe 100 is provided with a connector 110.

[0036] like Figures 1 to 3 As shown, in one embodiment, there are two connectors 110, namely a first connector 110a and a second connector 110b; the first connector 110a and the second connector 110b are respectively located at both ends of the water transport pipe 100, and the end of each connector 110 away from the water transport pipe 100 extends out of the die-casting mold 20. The water transport pipe 100 is connected to the inlet pipe 23 and the outlet pipe 24 respectively through the two connectors 110.

[0037] Specifically, in this embodiment, the connector 110 is a quick connector, which allows the water pipe 100 to be easily connected to the inlet pipe 23 and the outlet pipe 24. The connector 110 ensures a tight connection between the water pipe 100 and the external pipe, thereby preventing leakage of the cooling medium and improving the stability and safety of the cooling device. In addition, the connector 110 also prevents the pipe from loosening or falling off during operation, ensuring the reliable operation of the cooling device 10, improving cooling efficiency, and facilitating maintenance and replacement.

[0038] like Figures 1 to 3 As shown, in one embodiment, the cooling device 10 further includes a controller (not shown), with the temperature monitor 200 and a relay electrically connected to the controller. It is understood that the controller receives real-time temperature data from the temperature monitor 200 and controls the opening and closing of the solenoid valve 300 via the relay, thereby controlling the flow time of the cooling medium and achieving precise regulation of the cooling process. This avoids excessively high or low mold temperatures, ensuring stable casting quality. Simultaneously, it reduces manual intervention, improves production automation, lowers the risk of operational errors, and further enhances production efficiency and product quality.

[0039] It should be noted that this disclosure only protects the electrical connection relationship between the components. As for the control method, it belongs to the prior art and is not within the scope of protection of this disclosure.

[0040] This disclosure also provides a die-casting mold 20 including a fixed mold assembly 21, a moving mold assembly 22, a water inlet pipe 23, a water outlet pipe 24, and a cooling device 10 of any of the above embodiments. The fixed mold assembly 21 includes a fixed mold core 21a and a fixed mold blank (not shown in the figure), and the moving mold assembly 22 includes a moving mold core 22a and a moving mold blank 22b. The water supply pipe of the cooling device 10 is embedded in at least one of the fixed mold core 21a or the moving mold core 22a. One end of the water supply pipe 100 is connected to the water inlet pipe 23 of the die-casting mold 20, and the other end of the water supply pipe 100 is connected to the water outlet pipe 24 of the die-casting mold 20.

[0041] In this embodiment, the die-casting mold 20 maintains the mold temperature between 180°C and 250°C by embedding a water pipe 100 of a cooling device 10 within the mold and controlling the flow of cooling medium within the water pipe 100 via a relay of the cooling device 10. This prevents mold burning, deformation, and the appearance of cold runout lines, thereby improving product quality. Simultaneously, the temperature monitor 200 of the cooling device 10 can monitor the temperature inside the mold in real time.

[0042] like Figures 1 to 3As shown, in one embodiment, at least one of the fixed mold blanks or moving mold blanks 22b has a first mounting hole 25 extending into the fixed mold core or moving mold core 22a, and the temperature monitor 200 of the cooling device 10 is installed in the first mounting hole 25. Specifically, in this embodiment, the first mounting hole 25 is opened corresponding to the thick part of the casting and the hot spot position. The detection end of the temperature monitor 200 extends into the mold core through the first mounting hole 25 to monitor the real-time temperature of the hot spot and thick area.

[0043] Furthermore, the monitoring point is set on one side of the water outlet pipe 24 to facilitate monitoring of the cooling effect.

[0044] like Figures 1 to 3 As shown, in one embodiment, there are two temperature monitors 200, namely a first temperature monitor 201 and a second temperature monitor 202; both the fixed mold blank and the moving mold blank 22b have first mounting holes 25; the first temperature monitor 201 is installed in the first mounting hole 25 of the fixed mold blank, and the second temperature monitor 202 is installed in the first mounting hole 25 of the moving mold blank 22b. It can be understood that by providing first mounting holes 25 in both the fixed mold blank and the moving mold blank 22b for installing the corresponding temperature monitors 200, the temperature conditions on both the upper and lower sides of the die-casting mold 20 can be monitored simultaneously, ensuring uniform temperature distribution throughout the die-casting process.

[0045] like Figures 1 to 3 As shown, in one embodiment, the water pipe 100 is embedded in the fixed mold core 21a. A second mounting hole (not shown) and a third mounting hole 26 are respectively provided on both sides of the fixed mold core 21a. The two ends of the water pipe 100 are located in the second mounting hole and the third mounting hole 26, respectively. Specifically, in this embodiment, the connector 110 of the cooling pipe is installed in the second mounting hole and the third mounting hole 26. The inlet pipe 23 is connected to the cooling pipe through the connector 110 from the second mounting hole, and the outlet pipe 24 is led out from the third mounting hole 26 through the connector 110, ensuring smooth flow of the cooling medium.

[0046] Compared with the prior art, this disclosure has at least the following advantages:

[0047] 1. The cooling device ensures uniform temperature distribution in the die-casting mold by precisely controlling the flow time of the cooling medium, avoiding heat accumulation in thicker areas, thereby improving product quality.

[0048] 2. The cooling device is also equipped with a temperature monitor to monitor the temperature of the die-casting mold in real time. The cooling device controls the opening and closing of the solenoid valve based on the temperature value of the temperature monitor, ensuring that the temperature of the die-casting mold is always maintained between 180℃ and 250℃, preventing mold burning, deformation, and the formation of cold runout lines, thereby improving the quality of the casting.

[0049] 3. The cooling device achieves automated control of the cooling medium flow by electrically connecting the temperature monitor to the solenoid valve, thereby improving production efficiency and reducing the labor intensity of workers.

[0050] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A cooling device, characterized in that, include: Water pipelines, temperature monitors, and solenoid valves; The water pipe is used to be embedded in the die-casting mold to form the thick part of the casting. One end of the water pipe is used to connect with the water inlet pipe of the die-casting mold, and the other end of the water pipe is used to connect with the water outlet pipe of the die-casting mold. The solenoid valve is located at the end of the water supply pipe that connects to the water inlet pipe; The temperature monitor is installed inside the die-casting mold and is used to monitor the temperature of the die-casting mold. The temperature monitor is electrically connected to the solenoid valve, which is used to open when the temperature monitor detects that the temperature of the die-casting mold has reached a preset temperature value.

2. The cooling device according to claim 1, characterized in that, The preset temperature value is 250℃.

3. The cooling device according to claim 1, characterized in that, The cooling device also includes a relay, and the solenoid valve and the temperature monitor are both electrically connected to the relay. The relay is used to control the solenoid valve to open or close. The relay is used to control the solenoid valve to open when the temperature monitor detects that the temperature of the die-casting mold has reached a preset temperature value.

4. The cooling device according to claim 1, characterized in that, The water pipeline is equipped with a joint.

5. The cooling device according to claim 4, characterized in that, The number of joints is two, namely a first joint and a second joint; the first joint and the second joint are respectively located at both ends of the water transport pipe, and the end of each joint away from the water transport pipe extends out of the die-casting mold. The water transport pipe is connected to the inlet pipe and the outlet pipe respectively through the two joints.

6. The cooling device according to claim 3, characterized in that, The cooling device also includes a controller, and the temperature monitor and the relay are both electrically connected to the controller.

7. A die-casting mold, characterized in that, include: A fixed mold assembly, a moving mold assembly, a water inlet pipe, a water outlet pipe, and a cooling device according to any one of claims 1-6, wherein the fixed mold assembly includes a fixed mold blank and a fixed mold core disposed on the fixed mold blank, the moving mold assembly includes a moving mold blank and a moving mold core disposed on the moving mold blank, and the water supply pipe of the cooling device is embedded in at least one of the fixed mold core or the moving mold core, one end of the water supply pipe is connected to the water inlet pipe of the die casting mold, and the other end of the water supply pipe is connected to the water outlet pipe of the die casting mold.

8. The die-casting mold according to claim 7, characterized in that, At least one of the fixed mold blanks or the moving mold blanks has a first mounting hole, the first mounting hole extending into the fixed mold core or the moving mold core, and the temperature monitor of the cooling device is installed in the first mounting hole.

9. The die-casting mold according to claim 8, characterized in that, The number of temperature monitors is two, namely a first temperature monitor and a second temperature monitor; both the fixed mold blank and the moving mold blank are provided with the first mounting hole; the first temperature monitor is installed in the first mounting hole of the fixed mold blank, and the second temperature monitor is installed in the first mounting hole of the moving mold blank.

10. The die-casting mold according to claim 7, characterized in that, The water pipe is embedded in the fixed mold core; a second mounting hole and a third mounting hole are respectively opened on both sides of the fixed mold core, and the two ends of the water pipe are respectively located in the second mounting hole and the third mounting hole.

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