Cooling device for injection mold

Abstract

The cooling device comprises a lower mold, an upper mold and a water pool, a mold cavity is formed in the upper end of the lower mold, a water cooling cavity is formed in the lower mold, one side of the lower mold is provided with a connecting valve nozzle, the connecting valve nozzle is communicated with the water cooling cavity, and the water cooling cavity is communicated with the water cooling cavity. A pump body is arranged on one side of the water pool, a water inlet pipe is arranged between one connecting valve nozzle and the pump body, an electromagnetic valve is arranged on the water inlet pipe, a water outlet pipe is arranged between the other connecting valve nozzle and the water pool, a one-way valve is arranged on the water outlet pipe, and at least six heat conduction blocks are arranged in the water cooling cavity. The water cooling cavity is formed in the injection mold and surrounds the mold cavity, cold water is injected into the water cooling cavity, heat of the mold is absorbed and transferred through water, the temperature of the water injected into the water cooling cavity is controlled, the heat absorption capacity is ensured, and the injection mold is cooled more quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a cooling device for an injection mold. Background Technique

[0002] An injection mold is a tool for producing plastic products; it is also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some parts with complex shapes. Specifically, it means injecting the heat-melted plastic into the mold cavity under high pressure by an injection molding machine, and after cooling and solidifying, a formed product is obtained.

[0003] Chinese Patent Publication No. CN215750592U, with the authorization announcement date of February 8, 2022, a cooling device for an injection mold, includes: a top plate, a fixing hole, a mold top, an inlet mold groove, a stop bar, an air-cooling component, a water inlet, a sealing ring, a cooling plate, a water-cooling pipe, a direct current pipe, a partition plate, a shell, a connecting groove, an air duct, a frame, a retaining frame, a fan blade, a rotating column, a knob, a water-cooling component, a ventilation port, a ventilation slot, a side ventilation hole, and a mold body. A fixing hole is opened inside the top plate, a mold top is installed on the upper end surface at the middle position of the top plate, a connecting groove is opened on the upper end surface of the shell, an air duct is opened inside the shell, a sealing ring is installed on the right end surface of the water inlet, and a direct current pipe is installed on the right end surface of the water inlet. Compared with the prior art, the utility model has the following beneficial effects: by using the mold top and the inlet mold groove, the injection mold can be quickly demolded, and through the air-cooling component and the water-cooling component, the mold can be effectively cooled quickly, improving the cooling effect of the utility model.

[0004] The existing injection mold cooling uses air cooling in cooperation with setting copper pipes in the mold to achieve heat dissipation. The liquid circulates in the copper pipes to take out the heat. The liquid is recycled and the temperature gradually rises, and the heat absorption capacity decreases, reducing the cooling speed of the injection mold and not meeting the use requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cooling device for an injection mold to solve the problem raised in the above background technique that the existing injection mold cooling uses air cooling in cooperation with setting copper pipes in the mold to achieve heat dissipation. The liquid circulates in the copper pipes to take out the heat. The liquid is recycled and the temperature gradually rises, and the heat absorption capacity decreases, reducing the cooling speed of the injection mold and not meeting the use requirements.

[0006] To achieve the above object, the present utility model provides the following technical solution: A cooling device for an injection mold, comprising a lower mold, an upper mold, and a water tank. An internal cavity is provided inside the upper end of the lower mold. A water cooling cavity is provided inside the lower mold, and the water cooling cavity is arranged outside the internal cavity. Two connecting nozzles are provided on one side of the lower mold, and the connecting nozzles are integrally connected to the lower mold. The connecting nozzles are communicated with the water cooling cavity. A pump body is provided on one side of the water tank, and the pump body is integrally connected to the water tank. A water inlet pipe is provided between one of the connecting nozzles and the pump body, and an electromagnetic valve is provided on the water inlet pipe, and the electromagnetic valve is integrally connected to the water inlet pipe. A water outlet pipe is provided between the other connecting nozzle and the water tank, and a check valve is provided on the water outlet pipe, and the check valve is integrally connected to the water outlet pipe. At least six heat conduction blocks are provided inside the water cooling cavity, and the heat conduction blocks are integrally connected to the lower mold. The lower mold is communicated with the internal cavity, and the heat conduction blocks are arranged equidistantly along the internal cavity.

[0007] Preferably, the cross-section of the heat conduction block is in the shape of an isosceles trapezoid.

[0008] Preferably, at least four heat dissipation grooves are provided on the side wall of the lower mold, and the heat dissipation grooves are horizontally arranged equidistantly on the side wall of the lower mold. At least four heat dissipation holes are provided inside the lower mold, and the heat dissipation holes are vertically arranged equidistantly outside the water cooling cavity.

[0009] Preferably, an air cooling frame is provided on one side of the lower mold, and the air cooling frame is fixedly connected to the lower mold. A fan assembly is provided on one side of the air cooling frame, and the fan assembly is connected to the air cooling frame by screws. The fan assembly is arranged on one side of the heat dissipation grooves and the heat dissipation holes.

[0010] Preferably, a cooling component is provided inside the water tank, and the cooling component is integrally connected to the water tank.

[0011] Preferably, a temperature sensor is provided on one side of the water tank, and the temperature sensor is integrally connected to the water tank.

[0012] Preferably, a filter screen plate is provided above the water tank, and the filter screen plate is connected to the water tank by screws. A filter disc is provided inside the water tank, and the filter disc is attached to the water tank. The filter disc is arranged on one side of the pump body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. In this utility model device, through the settings of a water tank, a cooling component, a pump body, a connecting valve nozzle, a water cooling cavity, a heat conducting block, a water inlet pipe and a water outlet pipe, water is added to the water tank, and the pump body pumps the water in the water tank through the water inlet pipe and the connecting valve nozzle and injects it into the water cooling cavity. The water in the water cooling cavity absorbs the heat on the mold, and then the water in the water cooling cavity flows into the water tank through the connecting valve nozzle and the water outlet pipe. The heat conducting block is made of copper, and it has a very good heat conducting effect. It can quickly absorb the heat on the mold and transfer it to the water in the water cooling cavity, accelerating the cooling of the mold. The cooling component cools the water in the water tank, reducing the water temperature. The cold water can better absorb heat, improving the mold cooling efficiency;

[0015] 2. In this utility model device, through the settings of heat dissipation grooves, heat dissipation holes and a fan component, the heat dissipation grooves and heat dissipation holes accelerate the air flow on both sides of the mold. The fan component generates a high-speed air flow from one side of the mold, and the high-speed air flow flows through the heat dissipation grooves and heat dissipation holes, using the rapidly flowing air to accelerate the heat dissipation of the mold, further improving the mold cooling efficiency. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a cross-sectional view of the lower mold of this utility model;

[0018] Figure 3 is a connection relationship diagram of the water inlet pipe and the water outlet pipe of this utility model with the water tank;

[0019] Figure 4 is of this utility model Figure 1 partial enlarged view of area A.

[0020] In the figure: 1, lower mold; 2, upper mold; 3, air cooling frame; 4, heat dissipation groove; 5, heat dissipation hole; 6, water tank; 7, filter plate; 8, cooling component; 9, temperature sensor; 10, pump body; 11, connecting valve nozzle; 12, mold cavity; 13, water cooling cavity; 14, heat conducting block; 15, water inlet pipe; 16, solenoid valve; 17, filter disc; 18, water outlet pipe; 19, check valve; 20, fan component. Detailed Description of the Preferred Embodiments

[0021] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments.

[0022] Please refer to Figures 1-4, an embodiment provided by the present utility model: a cooling device for an injection mold, including a lower mold 1, an upper mold 2, and a water tank 6. Inside the upper end of the lower mold 1, there is a mold cavity 12. Inside the lower mold 1, there is a water cooling cavity 13, and the water cooling cavity 13 is arranged outside the mold cavity 12. On one side of the lower mold 1, there are two connecting nozzles 11, and the connecting nozzles 11 are integrally connected with the lower mold 1. The connecting nozzles 11 are communicated with the water cooling cavity 13. On one side of the water tank 6, there is a pump body 10, and the pump body 10 is integrally connected with the water tank 6. Between one connecting nozzle 11 and the pump body 10, there is a water inlet pipe 15. An electromagnetic valve 16 is arranged on the water inlet pipe 15, and the electromagnetic valve 16 is integrally connected with the water inlet pipe 15. Between the other connecting nozzle 11 and the water tank 6, there is a water outlet pipe 18. A check valve 19 is arranged on the water outlet pipe 18, and the check valve 19 is integrally connected with the water outlet pipe 18. Inside the water cooling cavity 13, there are at least six heat conducting blocks 14, and the heat conducting blocks 14 are integrally arranged with the lower mold 1. The lower mold 1 is communicated with the mold cavity 12, and the heat conducting blocks 14 are arranged equidistantly along the mold cavity 12. The cross-section of the heat conducting block 14 is in the shape of an isosceles trapezoid.

[0023] During use: Add water to the water tank 6. Open the electromagnetic valve 16 and turn on the pump body 10 to pump the water in the water tank 6 through the water inlet pipe 15 and the connecting nozzle 11 into the water cooling cavity 13. Use the water in the water cooling cavity 13 to absorb the heat on the mold. Open the check valve 19, and then the water in the water cooling cavity 13 flows into the water tank 6 through the connecting nozzle 11 and the water outlet pipe 18. The heat conducting block 14 is made of copper, and the heat conducting effect of the heat conducting block 14 is very good. It can quickly absorb the heat on the mold and transfer it to the water in the water cooling cavity 13, accelerating the cooling of the mold.

[0024] Please refer to Figure 1 and Figure 4 , on the side wall of the lower mold 1, there are at least four heat dissipation grooves 4, and the heat dissipation grooves 4 are horizontally arranged equidistantly on the side wall of the lower mold 1. Inside the lower mold 1, there are at least four heat dissipation holes 5, and the heat dissipation holes 5 are vertically arranged equidistantly outside the water cooling cavity 13. On one side of the lower mold 1, there is an air cooling frame 3, and the air cooling frame 3 is fixedly connected with the lower mold 1. On one side of the air cooling frame 3, there is a fan assembly 20, and the fan assembly 20 is connected to the air cooling frame 3 by screws. The fan assembly 20 is arranged on one side of the heat dissipation grooves 4 and the heat dissipation holes 5. The heat dissipation grooves 4 and the heat dissipation holes 5 accelerate the air flow on both sides of the mold. The fan assembly 20 generates a high-speed air flow from one side of the mold, and the high-speed air flow flows through the heat dissipation grooves 4 and the heat dissipation holes 5. Use the rapidly flowing air to accelerate the heat dissipation of the mold, further improving the cooling efficiency of the mold.

[0025] Please refer to Figure 1 and Figure 3, a cooling component 8 is arranged inside the water tank 6, and the cooling component 8 is integrally connected to the water tank 6. A temperature sensor 9 is arranged on one side of the water tank 6, and the temperature sensor 9 is integrally connected to the water tank 6. A filter plate 7 is arranged above the water tank 6, and the filter plate 7 is connected to the water tank 6 by screws. A filter disk 17 is arranged inside the water tank 6, and the filter disk 17 is in fit connection with the water tank 6. The filter disk 17 is arranged on one side of the pump body 10. The cooling component 8 cools the water in the water tank 6 to reduce the water temperature. The temperature sensor 9 measures the temperature of the water in the water tank 6 to control the water temperature. The cold water can better absorb heat and improve the mold cooling efficiency.

[0026] Working principle: Add water into the water tank 6, open the solenoid valve 16 and turn on the pump body 10 to pump the water in the water tank 6 through the water inlet pipe 15 and the connecting nozzle 11 into the water cooling cavity 13. Use the water in the water cooling cavity 13 to absorb the heat on the mold. Open the check valve 19, and then the water in the water cooling cavity 13 flows into the water tank 6 through the connecting nozzle 11 and the water outlet pipe 18. The heat conducting block 14 is made of copper, and the heat conducting block 14 has a good heat conducting effect and can quickly absorb the heat on the mold and transfer it to the water in the water cooling cavity 13 to accelerate the mold cooling. The heat dissipation grooves 4 and the heat dissipation holes 5 accelerate the air flow on both sides of the mold. The fan assembly 20 generates a high-speed air flow from one side of the mold, and the high-speed air flow flows through the heat dissipation grooves 4 and the heat dissipation holes 5. Use the rapidly flowing air to accelerate the mold heat dissipation; The cooling component 8 cools the water in the water tank 6 to reduce the water temperature. The temperature sensor 9 measures the temperature of the water in the water tank 6 to control the water temperature. The cold water can better absorb heat and improve the mold cooling efficiency.

[0027] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for an injection mold, comprising a lower mold (1), an upper mold (2) and a water tank (6), characterized in that: Inside the upper end of the lower mold (1), there is a mold cavity (12). Inside the lower mold (1), there is a water cooling cavity (13), and the water cooling cavity (13) is arranged outside the mold cavity (12). On one side of the lower mold (1), there are two connecting nozzles (11), and the connecting nozzles (11) are integrally connected to the lower mold (1). The connecting nozzles (11) are communicated with the water cooling cavity (13). On one side of the water tank (6), there is a pump body (10), and the pump body (10) is integrally connected to the water tank (6). Between one of the connecting nozzles (11) and the pump body (10), there is a water inlet pipe (15). An electromagnetic valve (16) is arranged on the water inlet pipe (15), and the electromagnetic valve (16) is integrally connected to the water inlet pipe (15). Between the other connecting nozzle (11) and the water tank (6), there is a water outlet pipe (18). A check valve (19) is arranged on the water outlet pipe (18), and the check valve (19) is integrally connected to the water outlet pipe (18). Inside the water cooling cavity (13), there are at least six heat conducting blocks (14), and the heat conducting blocks (14) are integrally connected to the lower mold (1). The lower mold (1) is communicated with the mold cavity (12), and the heat conducting blocks (14) are arranged equidistantly along the mold cavity (12).

2. The cooling device for an injection mold according to claim 1, wherein: The cross-section of the heat conducting block (14) is in the shape of an isosceles trapezoid.

3. The cooling device for an injection mold according to claim 1, characterized in that: On the side wall of the lower mold (1), there are at least four heat dissipation grooves (4), and the heat dissipation grooves (4) are horizontally and equidistantly arranged on the side wall of the lower mold (1). Inside the lower mold (1), there are at least four heat dissipation holes (5), and the heat dissipation holes (5) are vertically and equidistantly arranged outside the water cooling cavity (13).

4. The cooling device for an injection mold according to claim 3, characterized in that: On one side of the lower mold (1), there is an air cooling frame (3), and the air cooling frame (3) is fixedly connected to the lower mold (1). On one side of the air cooling frame (3), there is a fan assembly (20), and the fan assembly (20) is connected to the air cooling frame (3) by screws. The fan assembly (20) is arranged on one side of the heat dissipation grooves (4) and the heat dissipation holes (5).

5. The cooling device for an injection mold according to claim 1, characterized in that: Inside the water tank (6), there is a cooling assembly (8), and the cooling assembly (8) is integrally connected to the water tank (6).

6. The cooling device for an injection mold according to claim 1, wherein: On one side of the water tank (6), there is a temperature sensor (9), and the temperature sensor (9) is integrally connected to the water tank (6).

7. The cooling device for an injection mold according to claim 1, characterized in that: Above the water tank (6), there is a filter plate (7), and the filter plate (7) is connected to the water tank (6) by screws. Inside the water tank (6), there is a filter disc (17), and the filter disc (17) is in fit connection with the water tank (6). The filter disc (17) is arranged on one side of the pump body (10).

Images