Split-type precision plastic molding mold

Abstract

This utility model relates to the field of plastic molding technology and discloses a split-type precision plastic molding mold, including a main body. A limiting component is provided on the outer wall of the main body. A platform is fixedly connected to the bottom of the main body, and a heat dissipation component is provided on the top of the platform. An electric push rod is fixedly connected to the top of the main body, and a moving mold is fixedly connected to the output end of the electric push rod. A fixed frame is fixedly connected to the inner wall of the main body, and a fixed mold is fixedly connected to the top of the fixed frame. The heat dissipation component includes a water tank, the bottom of which is fixedly connected to the top of the platform. A cooling component is provided inside the water tank. In this utility model, coolant is transported to the cooling pipe through an outlet pipe, and then to the water tank through a water pipe, achieving rapid cooling of the moving mold. This avoids the mold temperature from continuously rising due to insufficient heat dissipation, which can lead to a decrease in the mold material properties, thereby improving the dimensional accuracy and stability of the product.

Description

Technical Field

[0001] This utility model relates to the field of plastic molding technology, and in particular to a split-type precision mold for plastic molding. Background Technology

[0002] In the manufacturing of plastic products, the application of split-type precision plastic molding molds is extremely widespread, and they are widely used in many fields such as electronics, automobiles, and aerospace. As modern industry continues to demand higher precision, complexity, and production efficiency from plastic products, technological innovation in split-type precision plastic molding molds is becoming increasingly crucial. These molds are divided into moving and fixed molds, achieving precise fit during injection molding to complete the molding of plastic materials.

[0003] Currently, air cooling technology is widely used in the cooling of precision molds for split-type plastic molding. An air cooling system mainly consists of components such as a fan and air ducts. Its working principle is to use the airflow generated by the fan to blow across the mold surface, accelerating the dissipation of heat from the mold surface to the surrounding environment through forced convection. When the fan starts, the air is guided by the air ducts to quickly sweep across the mold surface, and the heat from the mold is transferred to the air through heat conduction, and then carried away by the flowing air.

[0004] However, air cooling has a significant drawback: its cooling rate is relatively slow. This is because air has a low specific heat capacity, limiting its ability to absorb heat, and its poor thermal conductivity also results in low heat transfer efficiency. In actual production, even with increased fan power and optimized air duct design, the air cooling system struggles to lower the mold temperature to a suitable range quickly. Prolonged exposure to high temperatures degrades mold material properties, accelerates mold wear and aging, and significantly shortens mold lifespan. Furthermore, excessively high mold temperatures can cause plastic products to deform, exhibit dimensional instability, and develop warping and other defects. This makes it difficult to meet the high-precision, high-quality production requirements of modern industry for plastic products, severely impacting product yield and production efficiency, and hindering the further development of the plastic products manufacturing industry. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a split-type precision mold for plastic molding, which aims to improve the problem of slow cooling in plastic molding in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A split-type precision plastic molding die includes a main body, a limiting component on the outer wall of the main body, a platform fixedly connected to the bottom of the main body, a heat dissipation component on the top of the platform, an electric push rod fixedly connected to the top of the main body, a moving mold fixedly connected to the output end of the electric push rod, a fixed frame fixedly connected to the inner wall of the main body, and a fixed mold fixedly connected to the top of the fixed frame.

[0008] The heat dissipation assembly includes a water tank, the bottom of which is fixedly connected to the top of the platform. A cooling component is installed inside the water tank, and heat dissipation holes are opened inside the water tank. A water pump is fixedly connected to the outer wall of the water tank. The input end of the water pump is fixedly connected to the outer wall of the water tank, and the output end of the water pump is fixedly connected to a water outlet pipe. A cold pipe is installed inside the moving mold, and the other end of the water outlet pipe is fixedly connected to one end of the cold pipe. A water pipe is fixedly connected to the outer wall of the water tank, and the other end of the water pipe is fixedly connected to the other end of the cold pipe.

[0009] As a further description of the above technical solution:

[0010] The cooling assembly includes a condenser plate, the outer wall of which is fixedly connected to the inner wall of the water tank. A fan is fixedly connected to the top of the inner wall of the water tank. A condenser is provided on the outer wall of the water tank. The bottom of the condenser is fixedly connected to the top of the platform. A refrigerant inlet / outlet pipe is fixedly connected to the output end of the condenser. The outer wall of the refrigerant inlet / outlet pipe is slidably connected to the inner wall of the water tank. The other end of the refrigerant inlet / outlet pipe is fixedly connected to the outer wall of the condenser plate.

[0011] As a further description of the above technical solution:

[0012] The limiting component includes a retaining ball, the outer wall of which is disposed on the inner wall of the main body, and a limiting groove is formed inside the main body;

[0013] As a further description of the above technical solution:

[0014] The outer wall of the ball slides on the inner wall of the limiting groove, and a T-shaped slider is slidably connected to the inner wall of the main body.

[0015] As a further description of the above technical solution:

[0016] A spring is provided inside the T-shaped slider. One end of the spring is fixedly connected to the outer wall of the ball, and the other end of the spring is fixedly connected to the inner wall of the T-shaped slider.

[0017] As a further description of the above technical solution:

[0018] A connecting block is fixedly connected to the outer wall of the T-shaped slider, and the inner wall of the connecting block is fixedly connected to the outer wall of the water outlet pipe.

[0019] As a further description of the above technical solution:

[0020] A connecting arm is fixedly connected to the outer wall of the connecting block, and another connecting block is fixedly connected to the other end of the connecting arm. The inner wall of the other connecting block is fixedly connected to the outer wall of the water pipe.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this invention, coolant is supplied to the cooling pipe through the outlet pipe, and then the cool air emitted by the condenser plate is blown into the water tank by a fan. This achieves the effect of cooling the moving mold and rapidly cooling the water flow simultaneously. It avoids the situation where, during the plastic molding process, molten plastic material releases a large amount of heat when injected into the mold cavity. If heat is not dissipated in time, the mold temperature will continue to rise. Excessive temperature will lead to a decline in the performance of the mold material, affecting the service life of the mold, and causing quality problems such as deformation and dimensional instability in plastic products. Therefore, this invention improves the dimensional accuracy and stability of the products and reduces deformation and warping.

[0023] 2. In this utility model, the water outlet pipe and the water pipe are connected by a connecting arm for relative movement, and then moved into the limiting groove by a retaining ball, achieving the effect of limiting the water outlet pipe and the water pipe. This prevents the water pipe from being squeezed or collided during the mold closing process when it enters the mold, which could lead to the water pipe breaking or deforming and causing cooling water leakage. This would not only damage the mold structure but also cause the precision parts of the mold to rust and corrode, affecting the mold's accuracy and service life. Therefore, this invention ensures that the mold can open and close normally, and that each component can operate accurately according to design requirements, maintaining the stability and reliability of the mold. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the split-type precision plastic molding die proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the water tank of the split-type plastic molding precision mold proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the condensation plate of the split-type precision plastic molding die proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the moving mold of the split-type precision plastic molding die proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the connecting arm of the split-type precision plastic molding die proposed in this utility model.

[0029] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Main body; 2. Tabletop; 3. Electric push rod; 4. Moving mold; 5. Fixing frame; 6. Fixed mold; 7. Water tank; 8. Heat dissipation holes; 9. Condenser; 10. Refrigerant inlet / outlet pipe; 11. Condensation plate; 12. Water pump; 13. Water outlet pipe; 14. Water pipe; 15. Cold pipe; 16. Ball clamp; 17. Limiting groove; 18. T-shaped slider; 19. Connecting block; 20. Spring; 21. Connecting arm; 22. Fan. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1-4This utility model provides an embodiment of a split-type precision plastic molding mold, including a main body 1. The main body 1 provides stable support for the entire mold, fixing the internal components and ensuring the normal operation of the internal structure, thus ensuring the stability of the mold during injection molding. Limiting components are provided on the outer wall of the main body 1. A platform 2 is fixedly connected to the bottom of the main body 1, bearing the main weight of the mold and providing a stable working plane to prevent shaking or displacement during operation, ensuring smooth injection molding. A heat dissipation component is provided on the top of the platform 2. An electric push rod 3 is fixedly connected to the top of the main body 1, with a moving mold 4 fixedly connected to the output end of the electric push rod 3. The electric push rod 3 drives the moving mold 4 to open and close. During injection molding, the electric push rod 3, through precise control, enables the moving mold 4 to open and close quickly and smoothly, ensuring smooth injection molding. A fixing frame 5 is fixedly connected to the inner wall of the main body 1. The unit is fixedly connected to a fixed mold 6. A fixing frame 5 is used to support and fix the fixed mold 6, ensuring the positional accuracy and stability of the fixed mold 6 during the injection molding process and preventing the fixed mold 6 from shaking during opening and closing. The heat dissipation component includes a water tank 7. The bottom of the water tank 7 is fixedly connected to the top of the table 2. The water tank 7 is equipped with a cooling component. The water tank 7 is used to store coolant and cool the moving mold 4 through the internal cooling component and the external connecting pipe. The water tank 7 is provided with heat dissipation holes 8. The heat dissipation holes 8 can increase the contact area between the coolant inside the water tank 7 and the air, accelerate the heat dissipation speed of the coolant, and improve the heat dissipation efficiency. A water pump 12 is fixedly connected to the outer wall of the water tank 7. The input end of the water pump 12 is fixedly connected to the outer wall of the water tank 7, and the output end of the water pump 12 is fixedly connected to a water outlet pipe 13. A cold pipe 15 is provided inside the moving mold 4. The other end of the water outlet pipe 13 is fixedly connected to one end of the cold pipe 15. A water pipe 14 is fixedly connected to the outer wall of the water tank 7. The other end of the water pipe 14 is fixedly connected to the other end of the cold pipe 15.

[0034] Reference Figure 1 , Figure 5 and Figure 6The cooling assembly includes a condenser plate 11, whose outer wall is fixedly connected to the inner wall of the water tank 7. A fan 22 is fixedly connected to the top of the inner wall of the water tank 7. The fan 22, in conjunction with the condenser plate 11, blows cold air onto the coolant, achieving rapid cooling of the coolant inside the water tank 7. This prevents the coolant temperature from becoming too high, thus avoiding insufficient cooling of the moving mold 4, accelerating cooling efficiency, and improving working efficiency. A condenser 9 is installed on the outer wall of the water tank 7. The bottom of the condenser 9 is fixedly connected to the top of the platform 2, and a refrigerant inlet / outlet pipe 10 is fixedly connected to the output end of the condenser 9. The condenser 9 is used to cool the condenser plate 11, reducing its temperature and thus cooling the coolant. The outer wall of the refrigerant inlet / outlet pipe 10 is slidably connected to the inner wall of the water tank 7, and the other end of the refrigerant inlet / outlet pipe 10 is fixedly connected to the outer wall of the condenser plate 11. The limiting component includes a retaining ball 16, the outer wall of which is set on the inner wall of the main body 1. A limiting groove 17 is formed inside the main body 1, and the outer wall of the retaining ball 16 slides on the inner wall of the limiting groove 17. The retaining ball 16, in conjunction with the limiting groove 17, limits the range of motion of the T-shaped slider 18, preventing the connecting arm 21 from interfering with the water outlet pipe. Excessive stretching of water pipes 13 and 14 increases their service life. A T-shaped slider 18 is slidably connected to the inner wall of the main body 1. A spring 20 is installed inside the T-shaped slider 18. One end of the spring 20 is fixedly connected to the outer wall of the retaining ball 16, and the other end is fixedly connected to the inner wall of the T-shaped slider 18. The spring 20 is used to drive the retaining ball 16 to reset, ensuring that the retaining ball 16 is always within the limiting groove 17. This achieves the limiting of water pipes 13 and 14 during opening and closing, preventing excessive stretching from affecting their service life. A connecting block 19 is fixedly connected to the outer wall of block 18. The inner wall of the connecting block 19 is fixedly connected to the outer wall of the water outlet pipe 13. A connecting arm 21 is fixedly connected to the outer wall of the connecting block 19. Another connecting block 19 is fixedly connected to the other end of the connecting arm 21. The inner wall of the other connecting block 19 is fixedly connected to the outer wall of the water pipe 14. The connecting arm 21 moves relative to the connecting block 19, thereby driving the water outlet pipe 13 and the water pipe 14 to move, preventing the water outlet pipe 13 and the water pipe 14 from entering the interior of the main body 1, thus achieving the effect of restricting the water outlet pipe 13 and the water pipe 14 to the outer wall of the main body 1.

[0035] Working principle: During operation, the water pump 12 is first started, which transports the coolant from the water tank 7 to the outlet pipe 13. The coolant is then transported to the moving mold 4 through the outlet pipe 13. Next, the cooled coolant is discharged through the cooling pipe 15 to the water pipe 14, and then transported back to the water tank 7 through the water pipe 14. Then, the condenser 9 is started, which transports the coolant to the coolant inlet / outlet pipe 10. The coolant is then transported to the condenser plate 11 through the coolant inlet / outlet pipe 10. Next, the fan 22 is started, which blows the cold air generated by the condenser plate 11 onto the coolant to cool it down. Excess heat is then discharged through the heat dissipation holes 8. This prevents the mold temperature from rising continuously if the molten plastic material is not dissipated in time when it is injected into the mold cavity during the plastic molding process.

[0036] During the movement of the moving mold 4, the water outlet pipe 13 and water pipe 14 are first moved by the moving mold 4. Then, the movement of the water outlet pipe 13 and water pipe 14 drives the connecting block 19 to move. The movement of the connecting block 19 drives the connecting arm 21 to move. The movement of the connecting arm 21 causes the water outlet pipe 13 and water pipe 14 to move in a relatively linear motion. Then, the movement of the connecting block 19 drives the T-shaped slider 18. Next, the movement of the T-shaped slider 18 drives the retaining ball 16 to move. Then, the retaining ball 16 moves out of the limiting groove 17 to compress the spring 20, thereby releasing the limitation on the water outlet pipe 13 and water pipe 14. Then, when the moving mold 4 stops moving, the rebound of the spring 20 drives the retaining ball 16 to move into the limiting groove 17 to prevent the water outlet pipe 13 and water pipe 14 from being squeezed and collided during the mold closing process when they enter the mold, which would cause them to break or deform and thus leak coolant.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Split plastic forming precision mold comprising a main body (1), characterized in that: The outer wall of the main body (1) is provided with a limiting component, the bottom of the main body (1) is fixedly connected to a table (2), the top of the table (2) is provided with a heat dissipation component, the top of the main body (1) is fixedly connected to an electric push rod (3), the output end of the electric push rod (3) is fixedly connected to a moving mold (4), the inner wall of the main body (1) is fixedly connected to a fixed frame (5), and the top of the fixed frame (5) is fixedly connected to a fixed mold (6). The heat dissipation assembly includes a water tank (7), the bottom of which is fixedly connected to the top of the platform (2). A cooling assembly is provided inside the water tank (7), and heat dissipation holes (8) are provided inside the water tank (7). A water pump (12) is fixedly connected to the outer wall of the water tank (7). The input end of the water pump (12) is fixedly connected to the outer wall of the water tank (7), and the output end of the water pump (12) is fixedly connected to a water outlet pipe (13). A cold pipe (15) is provided inside the moving mold (4). The other end of the water outlet pipe (13) is fixedly connected to one end of the cold pipe (15). A water pipe (14) is fixedly connected to the outer wall of the water tank (7), and the other end of the water pipe (14) is fixedly connected to the other end of the cold pipe (15).

2. The split plastic molding precision mold according to claim 1, wherein: The cooling assembly includes a condenser plate (11), the outer wall of which is fixedly connected to the inner wall of the water tank (7), a fan (22) is fixedly connected to the top of the inner wall of the water tank (7), a condenser (9) is provided on the outer wall of the water tank (7), the bottom of which is fixedly connected to the top of the table (2), a refrigerant inlet / outlet pipe (10) is fixedly connected to the output end of the condenser (9), the outer wall of the refrigerant inlet / outlet pipe (10) is slidably connected to the inner wall of the water tank (7), and the other end of the refrigerant inlet / outlet pipe (10) is fixedly connected to the outer wall of the condenser plate (11).

3. The split-type precision plastic molding mold according to claim 2, characterized in that: The limiting component includes a retaining ball (16), the outer wall of which is disposed on the inner wall of the main body (1), and a limiting groove (17) is formed inside the main body (1).

4. The split plastic molding precision mold according to claim 3, wherein: The outer wall of the ball (16) slides on the inner wall of the limiting groove (17), and the inner wall of the main body (1) is slidably connected to a T-shaped slider (18).

5. The split plastic molding precision mold according to claim 4, wherein: A spring (20) is provided inside the T-shaped slider (18). One end of the spring (20) is fixedly connected to the outer wall of the ball (16), and the other end of the spring (20) is fixedly connected to the inner wall of the T-shaped slider (18).

6. The split plastic molding precision mold according to claim 5, wherein: The outer wall of the T-shaped slider (18) is fixedly connected to a connecting block (19), and the inner wall of the connecting block (19) is fixedly connected to the outer wall of the water outlet pipe (13).

7. The split plastic molding precision mold according to claim 6, wherein: The outer wall of the connecting block (19) is fixedly connected to a connecting arm (21), and the other end of the connecting arm (21) is fixedly connected to another connecting block (19). The inner wall of the other connecting block (19) is fixedly connected to the outer wall of the water pipe (14).

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