A cooling device for an automobile part hot forming die

Abstract

The application relates to the technical field of hot forming die, and particularly discloses a cooling device for an automobile part hot forming die, which comprises a lower die and a water tank, the water tank is installed on one side of the lower die, a cavity is formed on the lower die, a die core mounting position is arranged on the lower die, the die core mounting position is installed in the cavity, a water inlet pipe is communicated with one side of the water tank, one end of the water inlet pipe away from the water tank is communicated with the cavity, a water outlet pipe is communicated with the other side of the water tank, one end of the water outlet pipe away from the water tank is communicated with the cavity, and a heating component for heating water is arranged in the water tank. The application has the effect of improving the stamping efficiency of the die.

Description

Technical Field

[0001] This application relates to the field of thermoforming mold technology, and in particular to a cooling device for thermoforming molds of automotive parts. Background Technology

[0002] In the thermoforming process of automotive parts using molds, sheet metal is heated and then pressed into the desired automotive part using a mold. After being pressed, the automotive parts typically need to be cooled to improve the structural strength of the parts within the mold.

[0003] In related technologies, one conventional cooling method is to drill holes in the mold and allow water to flow through to cool the sheet metal. Another method is to use a hot bath for product cooling. The hot bath involves installing heating rods in the lower mold and injecting water into it. The heating rods heat the water to approximately 90 degrees Celsius. The heated sheet metal is then placed in the water and pressed down by the upper mold, simultaneously cooling the sheet metal and achieving a high-strength part through mold hardening. Because the hot bath involves immersion molding in water, the sheet metal comes into contact with water before molding. To prevent the austenite from transforming into martensite before molding, the water temperature is maintained at 90 degrees Celsius to prevent the sheet metal from cooling too quickly.

[0004] In actual use, it was found that each time the mold needs to be mounted on the machine before stamping the sheet metal, the heating rod needs to be connected to electricity, and then water needs to be injected into the mold to raise the temperature. The process takes a long time and the processing efficiency of the mold stamping is low. Utility Model Content

[0005] In order to improve the efficiency of die stamping, this application provides a cooling device for thermoforming dies for automotive parts, which has the effect of improving the efficiency of die stamping.

[0006] The cooling device for thermoforming dies of automotive parts provided in this application adopts the following technical solution: A cooling device for a thermoforming mold for automotive parts includes a lower mold and a water tank. The water tank is installed on one side of the lower mold. The lower mold has a cavity and a mold core mounting position, which is installed inside the cavity. One side of the water tank is connected to a water inlet pipe, and the end of the water inlet pipe away from the water tank is connected to the cavity. The other side of the water tank is connected to a water outlet pipe, and the end of the water outlet pipe away from the water tank is connected to the cavity. A heating element for heating water is installed inside the water tank.

[0007] By adopting the above technical solution, the heating component in the water tank preheats the water in the tank to about 90 degrees Celsius, and then injects the preheated hot water into the mold cavity through the water inlet pipe. After the cavity is filled with water, the water in the cavity flows into the water tank through the water outlet pipe. This allows the plate on the mold core to cool down while also carrying impurities in the cavity into the water tank through the water outlet pipe, forming a stable water circulation. The water in the tank is preheated before the mold is installed on the machine. After the mold is installed, the water pipe is directly connected for stamping, eliminating the waiting time for water injection and heating after the mold is installed on the machine, thus effectively improving the efficiency of plate stamping.

[0008] Optionally, the heating element includes heating rods, and multiple heating rods are provided.

[0009] By adopting the above technical solution, multiple heating rods can be started simultaneously, which facilitates rapid and uniform heating of the water in the tank and improves the efficiency of water heating.

[0010] Optionally, multiple heating rods are spaced apart and evenly distributed on both sides of the water tank, and are staggered.

[0011] By adopting the above technical solution, multiple heating rods are arranged at intervals and staggered, which facilitates the installation and adjustment of the heating rod positions.

[0012] Optionally, a filter screen is provided inside the water tank, and the interface between the water tank and the water outlet pipe is above the filter screen.

[0013] By adopting the above technical solution, while the sheet is cooling, impurities in the cavity enter the water tank from the water outlet pipe with the water flow. The filter screen can intercept the impurities, reducing the situation where impurities re-enter the cavity from the water inlet pipe, which helps to maintain the cleanliness of the sheet molding.

[0014] Optionally, the lower mold sidewall is provided with a drain pipe, which is connected to the cavity.

[0015] By adopting the above technical solution, excess water in the mold cavity can be drained through the drain pipe, making it easier to control the water level in the mold cavity.

[0016] Optionally, both the inlet pipe and the outlet pipe are made of rubber.

[0017] By adopting the above technical solution, the rubber material has good flexibility, the inlet and outlet pipes are easy to install in the water tank and mold, and the rubber tube is also easy to disassemble and bend, making maintenance more convenient.

[0018] Optionally, a first control valve is provided on the water inlet pipe, and a second control valve is provided on the water outlet pipe.

[0019] By adopting the above technical solution, when water is injected into the cavity, the first control valve facilitates the control of the flow and cut-off of water in the inlet pipe, and the second control valve facilitates the control of the flow and cut-off of water in the outlet pipe, preventing the water level in the cavity from being too high or too low, and facilitating adjustment.

[0020] Optionally, a pump body is provided on the water inlet pipe, and the pump body transports water from the water tank to the cavity through the water inlet pipe.

[0021] By adopting the above technical solution, the pump body generates pressure after starting, which draws the preheated hot water in the water tank into the inlet pipe, and then transports it from the inlet pipe into the cavity to provide power for water circulation.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The heating element inside the water tank preheats the water in the tank to about 90 degrees Celsius, and then injects the preheated hot water into the mold cavity through the water inlet pipe. After the cavity is filled with water, the water in the cavity flows back into the water tank through the water outlet pipe, forming a stable water circulation. The water in the tank is preheated before the mold is installed on the machine. After the mold is installed, the water pipe is directly connected to start the stamping work, eliminating the waiting time for water injection and heating after the mold is installed on the machine, thus effectively improving the efficiency of sheet metal stamping. 2. Water circulation can carry impurities from the mold cavity to the water tank. The filter screen in the water tank can filter out impurities. Regularly replacing the filter screen can clean the impurities, which helps maintain the cleanliness of the water. 3. The heating rod requires a high voltage to operate. When the heating rod is installed in the mold, the mold needs to be connected and disconnected from the power supply every time it is put on and taken off the machine. In addition, there is water in the mold, and some of the water will be carried out during the movement of the mold. Therefore, there is a risk of leakage and electric shock during the power connection and disconnection process. The constant temperature water tank separates the heating rod from the mold, and the constant temperature water tank does not need to be moved. The heating rod does not need to be disconnected frequently. The power supply to the heating rod is controlled by a switch, which effectively reduces the risk of leakage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the cooling device for the thermoforming mold of automotive parts used in this application; Figure 2 This is a schematic diagram of the cooling device for a thermoforming mold of automotive parts, showing the water outlet pipe and the second control valve.

[0024] Reference numerals: 1. Lower mold; 2. Water tank; 3. Cavity; 4. Mold core mounting position; 5. Water inlet pipe; 6. Water outlet pipe; 7. Heating component; 71. Heating rod; 8. Filter screen; 9. Drain pipe; 10. First control valve; 11. Second control valve; 12. Pump body. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0026] This application discloses a cooling device for a thermoforming mold of automotive parts, referring to... Figure 1 The system includes a lower mold 1 and a water tank 2, with the water tank 2 installed on one side of the lower mold 1. A mold core mounting position 4 is installed on the lower mold 1, which is used to install the mold core. In this embodiment, multiple mold core mounting positions 4 are provided. A cavity 3 is opened on the lower mold 1, and the mold core mounting position 4 is installed in the cavity 3.

[0027] Reference Figure 1 A water inlet pipe 5 is connected to one side of the water tank 2. The end of the water inlet pipe 5 away from the water tank 2 is connected to the cavity 3. A pump body 12 is fixedly installed on the water inlet pipe 5 for drawing hot water from the water tank 2. A water outlet pipe 6 is connected to the other side of the water tank 2. The end of the water outlet pipe 6 away from the water tank 2 is also connected to the cavity 3. A heating element 7 is installed inside the water tank 2 for heating the water temperature in the cavity 3. The water in the water tank 2 can be heated before the lower mold 1 is pressed. After the lower mold 1 is pressed, it can be directly connected to the water inlet pipe 5 and the water outlet pipe 6 for water injection and pressing, which takes less time and effectively improves the pressing efficiency of the lower mold 1.

[0028] Reference Figure 1 and Figure 2 Both the inlet pipe 5 and the outlet pipe 6 are made of rubber material, which has a certain degree of flexibility and water resistance, enabling it to adapt to the movement of the lower mold 1 and prevent water leakage. The inlet pipe 5 is equipped with a first control valve 10, which controls the opening and closing of the inlet pipe 5 and the water flow rate. The outlet pipe 6 is equipped with a second control valve 11, which controls the opening and closing of the outlet pipe 6 and the water flow rate.

[0029] Reference Figure 1 The heating component 7 includes heating rods 71. In this embodiment, multiple heating rods 71 ​​are provided, and the multiple heating rods 71 ​​are spaced apart and evenly distributed on both sides of the water tank 2 and staggered. The multiple heating rods 71 ​​can make the water in the water tank 2 heat evenly, reducing the occurrence of local water temperature that is too high or too low. The staggered arrangement of the multiple heating rods 71 ​​facilitates installation and adjustment.

[0030] Reference Figure 1 A filter screen 8 is welded and fixed inside the water tank 2. The filter screen 8 is made of stainless steel or nylon and has good filtration performance and corrosion resistance. The filter screen 8 is installed at the end of the water tank 2 near the water outlet pipe 6. The water in the cavity 3 is circulated to carry impurities in the cavity from the water outlet pipe 6 to the water tank 2. The impurities in the water are intercepted by the filter screen 8, while the clean water flows back to the cavity 3 through the water inlet pipe 5, thus achieving the filtration of impurities. Impurities can be cleaned by replacing the filter screen regularly.

[0031] Reference Figure 1 A drain pipe 9 is installed at the bottom of the side wall of the lower mold 1. The drain pipe 9 is connected to the cavity 3, so that excess water in the cavity 3 can be drained when the lower mold 1 does not need water.

[0032] The implementation principle of a cooling device for a thermoforming mold of automotive parts disclosed in this application is as follows: First, the water in the water tank 2 is heated to about 90 degrees Celsius by the heating rod 71. Then, the first control valve 10 and the pump body 12 are opened, and the water in the water tank 2 is introduced into the cavity 3 of the lower mold 1 through the water inlet pipe 5. When the cavity 3 is full of water, the second control valve 11 on the water outlet pipe 6 is opened, and water continues to be injected into the cavity 3. The water in the cavity 3 flows out into the water tank 2, so that the water in the cavity 3 and the water in the water tank 2 form a water circulation. While cooling the sheet metal, the water in the cavity 3 also carries impurities in the water into the water tank 2. The water in the water tank 2 can be heated during the stamping of the lower mold 1, so that the lower mold 1 can be stamped through the water inlet pipe 5 and the water outlet pipe 6 before the upper press, thereby effectively reducing the stamping time and improving the stamping efficiency of the lower mold 1.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cooling device for a thermoforming mold of automotive parts, characterized in that: The device includes a lower mold (1) and a water tank (2). The water tank (2) is installed on one side of the lower mold (1). The lower mold (1) has a cavity (3) and a mold core mounting position (4) is provided on the lower mold (1). The mold core mounting position (4) is installed in the cavity (3). One side of the water tank (2) is connected to a water inlet pipe (5). The end of the water inlet pipe (5) away from the water tank (2) is connected to the cavity (3). The other side of the water tank (2) is connected to a water outlet pipe (6). The end of the water outlet pipe (6) away from the water tank (2) is connected to the cavity (3). A heating element (7) for heating water is provided inside the water tank (2).

2. The cooling device for automotive parts thermoforming molds according to claim 1, characterized in that, The heating component (7) includes heating rods (71), and multiple heating rods (71) are provided.

3. The cooling device for thermoforming molds of automotive parts according to claim 2, characterized in that, Multiple heating rods (71) are spaced apart and evenly distributed on both sides of the water tank (2), and are arranged in an alternating manner.

4. The cooling device for thermoforming molds of automotive parts according to claim 1, characterized in that, The water tank (2) is equipped with a filter screen (8), which is installed at one end of the water tank (2) near the outlet pipe (6).

5. The cooling device for a thermoforming mold for automotive parts according to claim 1, characterized in that, The lower mold (1) is provided with a drain pipe (9) on its side wall, and the drain pipe (9) is connected to the cavity (3).

6. The cooling device for a thermoforming mold of automotive parts according to claim 1, characterized in that, Both the inlet pipe (5) and the outlet pipe (6) are made of rubber.

7. The cooling device for a thermoforming mold for automotive parts according to claim 1, characterized in that, The inlet pipe (5) is equipped with a first control valve (10), and the outlet pipe (6) is equipped with a second control valve (11).

8. The cooling device for a thermoforming mold for automotive parts according to claim 1, characterized in that, A pump body (12) is provided on the water inlet pipe (5), and the pump body (12) transports the water in the water tank (2) to the cavity (3) through the water inlet pipe (5).

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