Injection mold with rapid cooling structure

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with a rapid cooling structure, which comprises a frame, a lower mold base is fixedly mounted on the upper surface of the bottom of the frame, an injection molding cavity is fixedly mounted on the upper surface of the lower mold base, and a guide column is fixedly mounted on the surface of the lower mold base. A first hydraulic cylinder is fixedly mounted on the lower surface of the top of the frame, an upper die base is fixedly mounted at the output end of the first hydraulic cylinder, and a positioning hole is formed in the upper die base. According to the utility model, through the arrangement of the cold flow pipe, the water inlet pipe, the water outlet pipe, the radiator and the water pump structure, the water pump feeds cooling liquid into the cold flow pipe, the rapid cooling of the injection molding cavity is realized, and the design of the cold flow pipe enables the cooling liquid to uniformly flow through the inner wall of the injection molding cavity and more uniformly absorb heat, so that the heat dissipation is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with a rapid cooling structure. Background Technology

[0002] Injection molds are tools used for plastic molding. Publication number CN221249657U discloses a cooling structure for an injection mold, including an injection mold body. A cooling pipe is fixedly connected inside the injection mold body, and a transmission box is fixedly connected to the surface of the cooling pipe. The left side of the transmission box is fixedly connected to the right side of the injection mold body. A partition is fixedly connected to the bottom of the inner wall of the transmission box, and a motor is fixedly connected to the rear side of the inner wall of the transmission box. The output end of the motor passes through the partition and is fixedly connected to a turntable. A transmission column is fixedly connected to the front of the turntable, and a transmission plate is slidably connected to the surface of the transmission column. A transmission rod is fixedly connected to the right side of the transmission plate, and a push block is fixedly connected to the right side of the transmission rod. This utility model enhances the functionality of quick and easy operation and occupies a small area, enabling rapid control of the injection mold cooling components and preventing the cumbersome nature of traditional injection mold cooling systems. In practical applications, it has some shortcomings. The right-angle design of the corners inside the injection cavity leads to uneven inner wall thickness, which makes it easy for heat to accumulate in the corners and reduces heat dissipation efficiency. The cooling channels are arranged in straight lines or simple curves, which limits the contact area between the coolant and the inner wall of the injection cavity, resulting in low heat conduction efficiency and long cooling time. Improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] This utility model adopts the following technical solution: an injection mold with a rapid cooling structure, including a frame, a lower mold base fixedly installed on the bottom upper surface of the frame, an injection cavity fixedly installed on the upper surface of the lower mold base, guide pillars fixedly installed on the surface of the lower mold base, a first hydraulic cylinder fixedly installed on the top lower surface of the frame, an upper mold base fixedly installed at the output end of the first hydraulic cylinder, a positioning hole opened inside the upper mold base, a cold flow pipe opened on the inner wall of the injection cavity, the cold flow pipe connecting an inlet pipe and an outlet pipe, one end of the outlet pipe connecting to a radiator, one end of the inlet pipe connecting to a water pump, and a flexible hose connecting the water pump and the radiator.

[0005] Preferably, the guide post is located directly below the positioning hole. Here, the use of guide posts and positioning holes improves the mold's closing accuracy, reduces product defects caused by misalignment, and extends the mold's service life.

[0006] Preferably, the cold flow tubes are arranged in a zigzag pattern, closer to the inner wall of the injection cavity. Heat pipes are installed where the cold flow tubes are not directly connected, and the heat pipes are made of a material with good thermal conductivity. Here, the zigzag arrangement of the cold flow tubes increases the contact area between the coolant and the inner wall of the injection cavity, and the heat pipes further enhance heat conduction efficiency, improve cooling efficiency, ensure that heat in the injection cavity can be dissipated quickly and evenly, reduce cooling time, and improve production efficiency.

[0007] Preferably, all internal corners of the injection cavity are rounded. Here, uneven thickness at the corners of the injection cavity wall can cause a large amount of heat to accumulate, reducing heat dissipation efficiency. Rounded corners make the inner wall thickness more uniform, thus improving heat dissipation efficiency.

[0008] Preferably, a heat dissipation fin is fixedly mounted on the surface of the radiator. Here, the heat dissipation fin increases the surface area of ​​the radiator, improves heat dissipation efficiency, allows the coolant to cool down more quickly, enhances the heat dissipation effect, ensures that the cooling system can work continuously and efficiently, and avoids a decrease in cooling efficiency due to insufficient heat dissipation.

[0009] Preferably, a ventilation hole is provided at the bottom of the injection cavity, the ventilation hole is connected to an empty cavity, and the ventilation hole has a structure that is smaller at the top and larger at the bottom. A plug is slidably connected inside the ventilation hole. Here, the design of the ventilation hole allows air to circulate within the injection cavity, while the structure of being smaller at the top and larger at the bottom facilitates the rapid expulsion of air and prevents liquid material from flowing into the ventilation hole. The sliding connection of the plug allows the ventilation hole to be opened or closed as needed, improving the airflow within the injection cavity and further accelerating the cooling process. The design of the plug allows the mold to flexibly adjust the ventilation state according to different production needs, enhancing the adaptability of the mold.

[0010] Preferably, a movable plate is fixedly installed at the bottom of the blocking block, and the movable plate is slidably connected inside the cavity. The output end of a second hydraulic cylinder is fixedly installed at the bottom of the movable plate, and the cavity is connected to a blower. Here, controlled by the second hydraulic cylinder, the movable plate can drive the blocking block to slide within the ventilation hole, thereby opening or closing the ventilation hole. The addition of the blower further enhances the air circulation effect, improves the automation level of the mold, and makes the opening and closing of the ventilation hole more flexible and precise. The addition of the blower further enhances the cooling effect, ensuring that the heat in the injection cavity can be quickly dissipated. At the same time, the high-speed airflow of the blower also facilitates demolding.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, by setting up a cold flow pipe, an inlet pipe, an outlet pipe, a radiator and a water pump structure, the water pump sends the coolant into the cold flow pipe, realizing rapid cooling of the injection cavity. The design of the cold flow pipe allows the coolant to flow evenly through the inner wall of the injection cavity, absorbing heat more evenly, thereby accelerating the dissipation of heat.

[0013] 2. In this utility model, by setting a movable plate, a blocking block, a ventilation hole, a blower and a cavity structure, the No. 2 hydraulic cylinder drives the movable plate to move so that the blocking block can open and close the ventilation hole, thereby realizing the use of flowing air to cool the mold and making demolding more convenient. Attached Figure Description

[0014] Figure 1 A schematic diagram of an injection mold with a rapid cooling structure is provided for this utility model;

[0015] Figure 2 A schematic diagram of the back of an injection mold with a rapid cooling structure is provided for this utility model.

[0016] Figure 3 A cross-sectional view of an injection mold with a rapid cooling structure is provided for this utility model;

[0017] Figure 4 This utility model provides a schematic diagram of the upper mold base of an injection mold with a rapid cooling structure;

[0018] Figure 5 This utility model presents a schematic diagram of a cooling structure for an injection mold with a rapid cooling structure.

[0019] Legend:

[0020] 1. Frame; 2. Lower mold base; 3. Injection cavity; 4. Guide pillar; 5. Hydraulic cylinder No. 1; 6. Upper mold base; 7. Positioning hole; 8. Cold runner pipe; 9. Water inlet pipe; 10. Water outlet pipe; 11. Radiator; 12. Water pump; 13. Hose; 14. Ventilation hole; 15. Cavity; 16. Block; 17. Moving plate; 18. Hydraulic cylinder No. 2; 19. Blower. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1

[0024] Please see Figure 1-4 This utility model provides a technical solution: an injection mold with a rapid cooling structure, including a frame 1, a lower mold base 2 fixedly mounted on the bottom upper surface of the frame 1, and an injection cavity 3 fixedly mounted on the upper surface of the lower mold base 2. The internal corners of the injection cavity 3 are rounded. Uneven thickness at the corners of the inner wall of the injection cavity 3 can cause a large amount of heat to accumulate, reducing heat dissipation efficiency. The rounded corners make the inner wall thickness more uniform, improving heat dissipation efficiency. A guide post 4 is fixedly mounted on the surface of the lower mold base 2. A hydraulic cylinder 5 is fixedly mounted on the top lower surface of the frame 1. An upper mold base 6 is fixedly mounted on the output end of the hydraulic cylinder. A positioning hole 7 is opened inside the upper mold base 6. The guide post 4 is located directly below the positioning hole 7. The use of the guide post 4 and the positioning hole 7 improves the mold closing accuracy, reduces product defects caused by misalignment, and extends the service life of the mold. A cold flow pipe 8 is provided on the inner wall, arranged in a zigzag pattern. The cold flow pipe 8 is closer to the inner wall of the injection cavity 3. A heat pipe is provided at the non-direct connection point of the cold flow pipe 8. The heat pipe is made of a material with good thermal conductivity. The zigzag arrangement of the cold flow pipe 8 increases the contact area between the coolant and the inner wall of the injection cavity 3. The setting of the heat pipe further enhances the heat conduction efficiency, improves the cooling efficiency, and ensures that the heat in the injection cavity 3 can be dissipated quickly and evenly, reducing the cooling time and improving production efficiency. The cold flow pipe 8 is connected to an inlet pipe 9 and an outlet pipe 10. One end of the outlet pipe 10 is connected to a radiator 11. A heat dissipation fin is fixedly installed on the surface of the radiator 11. The heat dissipation fin increases the surface area of ​​the radiator 11, improves the heat dissipation efficiency, and allows the coolant to cool down faster, enhancing the heat dissipation effect and ensuring that the cooling system can work continuously and efficiently, avoiding the decrease in cooling efficiency due to insufficient heat dissipation. One end of the inlet pipe 9 is connected to a water pump 12. A flexible hose 13 connects the water pump 12 and the radiator 11.

[0025] Example 2

[0026] Please see Figure 5A ventilation hole 14 is provided at the bottom of the injection cavity 3, and the ventilation hole 14 is connected to a cavity 15. The ventilation hole 14 has a structure that is smaller at the top and larger at the bottom. A block 16 is slidably connected inside the ventilation hole 14. The design of the ventilation hole 14 allows air to circulate within the injection cavity 3, and the structure that is smaller at the top and larger at the bottom helps the air to be discharged quickly, while also preventing liquid material from flowing into the ventilation hole 14. The sliding connection of the block 16 allows the ventilation hole 14 to be opened or closed as needed, improving the airflow within the injection cavity 3 and helping to further accelerate the cooling process. The design of the block 16 allows the mold to flexibly adjust the ventilation state according to different production needs, enhancing the adaptability of the mold. The bottom of the block 16 is fixed. A movable plate 17 is fixedly installed inside the cavity 15. The output end of the second hydraulic cylinder 18 is fixedly installed at the bottom of the movable plate 17. The cavity 15 is connected to a blower 19. Under the control of the second hydraulic cylinder 18, the movable plate 17 can drive the block 16 to slide in the ventilation hole 14, thereby opening or closing the ventilation hole 14. The setting of the blower 19 further enhances the air circulation effect, improves the automation level of the mold, and makes the opening and closing of the ventilation hole 14 more flexible and precise. The addition of the blower 19 further enhances the cooling effect, ensuring that the heat in the injection cavity 3 can be quickly dissipated. At the same time, the high-speed airflow of the blower 19 also facilitates demolding.

[0027] Working Principle: First, the frame 1 serves as a supporting structure, with a lower mold base 2 fixedly installed at the bottom. The lower mold base 2 has an injection cavity 3 to accommodate the injection material. The upper mold base 6 is driven by a hydraulic cylinder 5 to move up and down along the guide post 4 and the positioning hole 7, realizing the mold closing and opening. During the injection process, the cold flow pipes 8 on the inner wall of the injection cavity 3 are connected to the water pump 12 and the radiator 11 through the inlet pipe 9 and the outlet pipe 10, forming a cooling circulation system. The cold flow pipes 8 are arranged in a zigzag pattern, close to the inner wall of the injection cavity 3, to ensure uniform and efficient cooling. The coolant enters the cold flow pipes 8 through the inlet pipe 9 via the water pump 12, absorbs the heat in the injection cavity 3, and then flows into the radiator 11 through the outlet pipe 10 for heat dissipation. The heat dissipation fins on the surface of the radiator 11 further enhance the heat dissipation effect. The cooled liquid returns to the water pump 12 through the hose 13, forming a closed loop. The bottom of the injection cavity 3 is provided with a ventilation hole 14, which is connected to the cavity 15. A block 16 is provided in the cavity 15. The block 16 is driven by the second hydraulic cylinder 18 to move the moving plate 17 up and down, controlling the opening and closing of the ventilation hole 14. When it is necessary to accelerate cooling and demolding, the blower 19 blows cold air into the injection cavity 3 through the cavity 15 and the ventilation hole 14 to demold and cool the material.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An injection mold with a rapid cooling structure, comprising a frame (1), characterized in that: A lower mold base (2) is fixedly installed on the bottom upper surface of the frame (1). An injection cavity (3) is fixedly installed on the upper surface of the lower mold base (2). A guide post (4) is fixedly installed on the surface of the lower mold base (2). A first hydraulic cylinder (5) is fixedly installed on the top lower surface of the frame (1). An upper mold base (6) is fixedly installed at the output end of the first hydraulic cylinder. A positioning hole (7) is opened inside the upper mold base (6). A cold flow pipe (8) is opened on the inner wall of the injection cavity (3). The cold flow pipe (8) is connected to an inlet pipe (9) and an outlet pipe (10). One end of the outlet pipe (10) is connected to a radiator (11). One end of the inlet pipe (9) is connected to a water pump (12). A flexible hose is connected between the water pump (12) and the radiator (11). 13) The cold flow pipes (8) are arranged in a zigzag pattern. The cold flow pipes (8) are closer to the inner wall of the injection cavity (3). A heat pipe is provided at the part where the cold flow pipes (8) are not directly connected. The heat pipe is made of a material with good thermal conductivity. A ventilation hole (14) is provided at the bottom of the injection cavity (3). The ventilation hole (14) is connected to a cavity (15). The ventilation hole (14) has a structure that is smaller at the top and larger at the bottom. A block (16) is slidably connected inside the ventilation hole (14). A moving plate (17) is fixedly installed at the bottom of the block (16). The moving plate (17) is slidably connected inside the cavity (15). The output end of the second hydraulic cylinder (18) is fixedly installed at the bottom of the moving plate (17). A blower (19) is connected to the cavity (15).

2. The injection mold with a rapid cooling structure according to claim 1, characterized in that: The guide post (4) is located directly below the positioning hole (7).

3. The injection mold with a rapid cooling structure according to claim 1, characterized in that: The internal corners of the injection cavity (3) are all rounded.

4. The injection mold with a rapid cooling structure according to claim 1, characterized in that: The surface of the radiator (11) is fixedly equipped with heat dissipation fins.

Images