A circulating cooling injection molding die

Abstract

This invention belongs to the field of injection molding mold technology, and in particular to a circulating cooling injection molding mold, including a base plate with a water tank fixedly connected to the top of the base plate. This invention uses a pump to draw coolant from the water tank and delivers it through an outlet pipe to a branch pipe, which then delivers it to the serpentine tubes in both the stationary and moving molds. After entering the serpentine tubes, the coolant absorbs the heat generated by the mold during injection, lowering the mold temperature. The cooled coolant then flows out of the mold through the serpentine tubes, through a flexible hose and another branch pipe into a cooler for further cooling, and then flows back to the water tank through a return pipe, completing one complete cooling cycle. This cycle is repeated continuously to cool both the stationary and moving molds, ensuring that the molds remain within a suitable temperature range during injection. This achieves efficient and simultaneous circulating cooling of both the stationary and moving molds, effectively reducing water consumption and improving cooling efficiency and injection molding quality.

Description

Technical Field

[0001] This utility model relates to the field of injection molding mold technology, specifically a circulating cooling injection molding mold. Background Technology

[0002] In today's booming manufacturing landscape, injection molding, with its significant advantages such as high efficiency, precision, and large-scale production capability, has become an indispensable core manufacturing technology for many industries. From the casings of everyday electronic products, such as the delicate shells of mobile phones and tablets, to the complex internal parts of automobiles, such as dashboards and interior components, and to the precision components of various medical devices, injection molds are ubiquitous. They are like the "magic paintbrush" of manufacturing, precisely shaping plastic raw materials into products of various shapes and sizes to meet the diverse and high-quality demands of different industries. In the injection molding process, the mold cooling stage plays a crucial role in product quality, production efficiency, and mold lifespan. Injection molding is the process of heating and melting thermoplastic or thermosetting plastics, injecting them into a mold cavity, and then cooling and solidifying them to obtain the desired product.

[0003] Current injection molds have significant shortcomings in their cooling design. Molds typically rely on simple cooling channels inside the mold, with cooling water flowing in from one end, absorbing heat from the mold, and then flowing out from the other end. However, this non-circulating cooling requires a continuous supply of large amounts of low-temperature cooling water, increasing water consumption. Furthermore, current injection molds struggle to cool both the upper and lower molds simultaneously, resulting in poor cooling performance. Therefore, we propose a circulating cooling injection mold to address these issues. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a circulating cooling injection molding die, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A circulating cooling injection molding die includes a base plate, a water tank fixedly connected to the top of the base plate, two side plates fixedly connected to the top of the water tank, a fixed mold fixedly connected to the top of the two side plates, a moving mold above the fixed mold, cavities formed in both the fixed mold and the moving mold, a serpentine tube fixedly connected to the inner wall of one side of each cavity, a delivery pump fixedly connected to the top of the base plate, an inlet pipe of the delivery pump extending into the water tank, a cooler fixedly connected to the top of the base plate, a branch pipe connected and fixed to the outlet pipe of the delivery pump and the inlet pipe of the cooler, a return pipe connected and fixed to one side of the cooler, the return pipe connected and fixed to the water tank, one end of one of the serpentine tubes extending to the outside of the moving mold and connected and fixed to a flexible tube, the end of the flexible tube connected and fixed to the corresponding branch pipe, and the other end of the serpentine tube extending to the outside of the fixed mold and connected and fixed to the branch pipe.

[0009] Furthermore, four guide posts are welded to the top of the base plate, and the top of the four guide posts are welded to the same top plate.

[0010] Furthermore, a hydraulic cylinder is fixedly connected to the top plate, and the output end of the hydraulic cylinder is fixedly connected to the top of the moving mold.

[0011] Furthermore, the top of the water tank is connected to and fixed with a water inlet.

[0012] Furthermore, the right side of the moving mold is connected to and fixed with an injection port.

[0013] Furthermore, the water tank is made of a transparent material.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a circulating cooling injection molding die, which has the following beneficial effects:

[0016] This invention utilizes a pump to draw coolant from a water tank. The coolant is then delivered through an outlet pipe to a branch pipe, which in turn delivers it to the serpentine tubes in both the stationary and moving molds. As the coolant flows through the serpentine tubes, it absorbs the heat generated during injection molding, thus lowering the mold temperature. The cooled coolant then exits the mold through the serpentine tubes and enters a chiller via a flexible hose and another branch pipe. The chiller cools the heated coolant. The cooled coolant then flows back to the water tank through a return pipe, completing one full cooling cycle. This cycle is repeated continuously to cool both the stationary and moving molds, ensuring they remain within a suitable temperature range during injection molding. This efficient, simultaneous cooling of both molds effectively reduces water consumption and improves cooling efficiency and injection molding quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the moving mold of this utility model.

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the mold cutting part of this utility model.

[0021] In the diagram: 1. Base plate; 2. Water tank; 3. Side plate; 4. Fixed mold; 5. Moving mold; 6. Cavity; 7. Serpentine tube; 8. Delivery pump; 9. Refrigerator; 10. Branch pipe; 11. Hose; 12. Return pipe; 13. Guide column; 14. Top plate; 15. Hydraulic cylinder; 16. Water inlet; 17. Injection port. Detailed Implementation

[0022] 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.

[0023] Example

[0024] like Figure 1-4 As shown, an embodiment of this utility model discloses a circulating cooling injection molding die, including a base plate 1, a water tank 2 fixedly connected to the top of the base plate 1, two side plates 3 fixedly connected to the top of the water tank 2, a fixed mold 4 fixedly connected to the top of the two side plates 3, a movable mold 5 provided above the fixed mold 4, cavities 6 provided on both the fixed mold 4 and the movable mold 5, a serpentine tube 7 fixedly connected to the inner wall of one side of the cavity 6, a delivery pump 8 fixedly connected to the top of the base plate 1, and the inlet pipe of the delivery pump 8 extending into the water tank 2. A cooler 9 is fixedly connected. The outlet pipe of the delivery pump 8 and the inlet pipe of the cooler 9 are connected and fixed with a branch pipe 10. A return pipe 12 is connected and fixed to one side of the cooler 9. The return pipe 12 is connected and fixed to the water tank 2. Both ends of one of the two serpentine pipes 7 extend to the outside of the moving mold 5 and are connected and fixed with a hose 11. The end of the hose 11 is connected and fixed to the corresponding branch pipe 10. Both ends of the other serpentine pipe 7 extend to the outside of the fixed mold 4 and are connected and fixed to the branch pipe 10.

[0025] During use, the coolant is connected to the water tank 2, the delivery pump 8, and the serpentine tube 7 to form a closed-loop cooling system. During injection molding, the delivery pump 8 draws coolant from the water tank 2 and distributes it through the branch pipe 10 to the serpentine tube 7 of the moving mold 4 and the moving mold 5 to circulate and fully absorb the heat of the mold. The heated coolant flows back to the coolant 9 to cool down quickly and then returns to the water tank 2 through the return pipe 12, achieving continuous and efficient circulating cooling.

[0026] In use, the cooler 9, model BCY-05A, adds injection material to the moving mold 5 and the fixed mold 4 through the injection port 17 for injection molding. When cooling is required, the delivery pump 8 starts, and its inlet pipe draws coolant from the water tank 2. The coolant is then delivered to a branch pipe 10 through the outlet pipe. The branch pipe 10 divides the coolant and delivers it to the serpentine tubes 7 in the fixed mold 4 and the moving mold 5 respectively. After entering the serpentine tubes 7, the coolant flows inside. Because the serpentine tubes 7 are distributed in a specific shape within the cavities 6 of the fixed mold 4 and the moving mold 5, they can fully contact the molds and absorb the heat generated by the molds during the injection molding process. As the coolant flows within the serpentine tubes 7... Heat is continuously transferred from the mold to the coolant, lowering the mold temperature. The coolant, having absorbed the heat, flows out of the mold through the serpentine pipe 7, then through a flexible hose 11 and another branch pipe 10 into the cooler 9. The cooler 9 cools the heated coolant. After being cooled by the cooler 9, the coolant flows back to the water tank 2 through the return pipe 12, completing one complete cooling cycle. This cycle repeats continuously, cooling both the stationary mold 4 and the moving mold 5, ensuring that the mold remains within a suitable temperature range during injection molding. This achieves efficient and simultaneous circulating cooling of both the stationary mold 4 and the moving mold 5, effectively reducing water consumption and improving cooling efficiency and injection molding quality.

[0027] like Figure 1 As shown, in some embodiments, four guide pillars 13 are welded to the top of the base plate 1, and the top of the four guide pillars 13 are welded to the same top plate 14. A hydraulic cylinder 15 is fixedly connected to the top plate 14, and the output end of the hydraulic cylinder 15 is fixedly connected to the top of the moving mold 5.

[0028] After injection molding, when it is necessary to open the mold, the hydraulic cylinder 15 is activated. The hydraulic cylinder 15 drives the moving mold 5 to move upward, so that the moving mold 5 separates from the fixed mold 4, and then the molded product is taken out.

[0029] like Figure 1 As shown, in some embodiments, the top of the water tank 2 is connected to and fixed with a water inlet 16.

[0030] Coolant can be added to water tank 2 through water inlet 16.

[0031] like Figure 3As shown, in some embodiments, the right side of the moving mold 5 is connected to and fixed with an injection port 17.

[0032] like Figure 1 As shown, in some embodiments, the water tank 2 is made of a transparent material.

[0033] During mold operation, coolant consumption is a continuous process. The transparent water tank 2 allows operators to visually see the remaining amount of coolant in the water tank 2 without opening it or using additional measuring tools.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A circulating cooling injection molding die, comprising a base plate (1), characterized in that: A water tank (2) is fixedly connected to the top of the base plate (1). Two side plates (3) are fixedly connected to the top of the water tank (2). A fixed mold (4) is fixedly connected to the top of the two side plates (3). A moving mold (5) is provided above the fixed mold (4). A cavity (6) is provided on both the fixed mold (4) and the moving mold (5). A serpentine tube (7) is fixedly connected to the inner wall of one side of the cavity (6). A delivery pump (8) is fixedly connected to the top of the base plate (1). The inlet pipe of the delivery pump (8) extends into the water tank (2). A cooler (9) is fixedly connected to the top of the base plate (1). The outlet pipe of the delivery pump (8) and the inlet pipe of the cooler (9) are connected and fixed with branch pipes (10). One side of the cooler (9) is connected and fixed with a return pipe (12). The return pipe (12) is connected and fixed with the water tank (2). Both ends of one of the two serpentine pipes (7) extend to the outside of the moving mold (5) and are connected and fixed with a hose (11). The end of the hose (11) is connected and fixed with the corresponding branch pipe (10). Both ends of the other serpentine pipe (7) extend to the outside of the fixed mold (4) and are connected and fixed with the branch pipe (10).

2. The circulating cooling injection molding die according to claim 1, characterized in that: Four guide posts (13) are welded to the top of the base plate (1), and the top of the four guide posts (13) is welded to the same top plate (14).

3. The circulating cooling injection molding die according to claim 2, characterized in that: A hydraulic cylinder (15) is fixedly connected to the top plate (14), and the output end of the hydraulic cylinder (15) is fixedly connected to the top of the moving mold (5).

4. A circulating cooling injection molding die according to claim 3, characterized in that: The top of the water tank (2) is connected to and fixed with a water inlet (16).

5. A circulating cooling injection molding die according to claim 4, characterized in that: The right side of the moving mold (5) is connected to and fixed with an injection port (17).

6. A circulating cooling injection molding die according to claim 5, characterized in that: The water tank (2) is made of transparent material.

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