Injection mold base capable of being rapidly cooled

Abstract

The utility model discloses a quick cooling injection mold base in the field of injection mold bases, which comprises a mold bottom plate, a first mold plate and a second mold plate are arranged on the surface of the mold bottom plate, a forming plate is arranged on the mold bottom plate, and a plurality of air inlet pipes with hollow structures are arranged on the side surfaces of the first mold plate and the second mold plate. One end of each air inlet pipe extends to the forming plate, the adjacent air inlet pipes are symmetrically arranged, and a plurality of first mold plates and second mold plates penetrating through the mold bottom plate are arranged at the bottom of the mold bottom plate; according to the injection mold base capable of being rapidly cooled, the hollow air inlet pipes on the side faces of the first mold plate and the second mold plate accelerate flowing of air in the forming plate through the symmetrically-distributed air flow channels, rapid heat dissipation of the surface of the forming plate is achieved, water flow can be directly introduced through the water inlet pipes, and the cooling efficiency is improved through a double cooling mechanism of liquid and air. And by arranging a plurality of ejector rods, demolding can be conveniently carried out, and the demolding efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold blanks, specifically to injection mold blanks with rapid cooling. Background Technology

[0002] The mold blank is the core supporting structure in an injection mold, typically composed of a mold base plate, template, and guiding mechanism. Its core functions include: support and fixation: bearing the core, cavity, ejection mechanism, and other components to ensure the mold maintains structural stability during high-pressure injection molding; molding control: defining the product shape through the mold cavity on the molding plate and controlling the filling and solidification process of the molten plastic; cooling and demolding: integrating a cooling system to accelerate plastic solidification and achieving rapid demolding of the product through the ejection mechanism.

[0003] Existing injection mold blanks have the following drawbacks: During operation, the common method involves fitting the upper and lower molds together to form the internal structure of the injection mold. After forming, a certain cooling time is required. Cooling is often achieved by separating the upper and lower mold blanks into two parts, thus achieving a cooling effect. However, this cooling time is relatively long, which can affect the quality of the formed product inside the injection mold blank, hindering subsequent processing. Directly separating the mold blanks for cooling results in a slow cooling rate, reducing product quality. Furthermore, after molding, workers need to remove the shaped part, usually manually or using tools. Because there is a force between the molded part and the injection mold blank, demolding is relatively difficult. Excessive external force during demolding often deforms the molded part, affecting its normal use. Demolding is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a rapidly cooling injection mold blank, which can effectively solve the technical problems of slow cooling speed and inconvenience of demolding of existing injection mold blanks.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a rapidly cooling injection mold blank, including a mold base plate, a first template and a second template are provided on the surface of the mold base plate, a forming plate is provided on the mold base plate, a plurality of hollow air inlet pipes are provided on the sides of the first template and the second template, one end of the air inlet pipe extends to the forming plate, and adjacent air inlet pipes are symmetrically arranged, a plurality of movable push rods passing through the first template and the second template are provided at the bottom of the mold base plate, adjacent push rods are symmetrically arranged, the push rods extend into the interior of the forming plate, a liquid inlet plate is provided on the first template and the second template respectively, and a plurality of conductive water inlet pipes are provided on the liquid inlet plate, one end of the water inlet pipes extends to the forming plate.

[0006] Furthermore, the mold base plate is provided with several positioning rods around its four edges, and the adjacent positioning rods are symmetrically arranged.

[0007] Furthermore, the surface of the second template is provided with injection molding pipes that extend above the molding plate.

[0008] Furthermore, the surface of the molding plate is recessed inward to form a mold cavity.

[0009] Furthermore, the bottom of the mold base plate is provided with two movable templates, and the four edges of the movable templates are provided with several movable rods that penetrate the mold base plate. The adjacent movable rods are symmetrically arranged, and the movable rods are provided with return springs.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The injection mold blank of this utility model with rapid cooling has hollow air inlet pipes on the sides of the first and second templates, which accelerate the flow of gas inside the molding plate through symmetrically distributed airflow channels, thereby achieving rapid heat dissipation on the surface of the molding plate. Water can be directly introduced by setting water inlet pipes. Through the dual cooling mechanism of liquid and gas, the temperature of the molding plate and mold cavity can be rapidly reduced, thereby achieving rapid cooling. Demolding can be easily carried out by setting several ejector pins, which greatly improves demolding efficiency. Attached Figure Description

[0011] Figure 1 This is a perspective view of the upper end of the injection mold blank for rapid cooling according to this utility model;

[0012] Figure 2 This is a three-dimensional view of the interior of the injection mold blank for rapid cooling according to this utility model;

[0013] Figure 3 This is a perspective view of the lower end of the injection mold blank for rapid cooling according to this utility model.

[0014] Numbering on the map:

[0015] 1-Mold base plate; 2-First template; 3-Second template; 4-Injection pipe; 5-Positioning rod; 6-Moving template; 7-Moving rod; 8-Reset spring; 9-Inlet plate; 10-Water inlet pipe; 11-Air inlet pipe; 12-Ejector rod; 13-Molding plate; 14-Mold cavity. Detailed Implementation

[0016] 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.

[0017] The following is combined Figures 1-3 A detailed description of this utility model is provided below:

[0018] The rapidly cooling injection mold base includes a mold base plate 1, which is made of aluminum alloy with high thermal conductivity. The surface is precision-machined to ensure flatness. The mold base plate 1 is fixed to the injection molding machine's worktable with screws, providing a stable foundation for the entire mold base. Several positioning rods 5 are symmetrically distributed around the perimeter of the mold base plate 1. These positioning rods 5 are used to precisely position the first template 2 and the second template 3 during installation, ensuring accurate alignment of the first template 2 and the second template 3. The surface of the mold base plate 1 is provided with the first template 2 and the second template 3. The mold base plate 1 is also provided with a forming plate 13. The sides of the first template 2 and the second template 3 are provided with… The mold base plate 1 has several hollow air inlet pipes 11, one end of which extends to the molding plate 13. Adjacent air inlet pipes 11 are symmetrically arranged. The bottom of the mold base plate 1 has several movable push rods 12 that pass through the first template 2 and the second template 3. Adjacent push rods 12 are symmetrically arranged. The push rods 12 extend into the interior of the molding plate 13. The first template 2 and the second template 3 each have a liquid inlet plate 9. The liquid inlet plate 9 has several conductive water inlet pipes 10, one end of which extends to the molding plate 13. The mold base plate 1 has several positioning rods 5 along its four edges, symmetrically arranged. The second template 3 has an injection pipe 4 on its surface, which extends above the molding plate 13. The surface of the molding plate 13 is recessed inward to form a mold cavity 14. Two movable templates 6 are provided at the bottom of the mold base plate 1. Several movable rods 7 are provided around the perimeter of the movable templates 6, penetrating the mold base plate 1. Adjacent movable rods 7 are symmetrically arranged. Each movable rod 7 is equipped with a return spring 8. At the bottom of the mold base plate 1, two movable templates 6 are provided, with several movable rods 7 installed around their perimeter. These movable rods 7 penetrate the mold base plate 1 and are connected to an external drive mechanism, such as a cylinder or hydraulic cylinder. A return spring 8 is provided on the moving rod 7 to automatically reset the moving template 6 after the drive mechanism is disconnected. The air inlet pipe 11 is a hollow structure, through which cooling gas, such as compressed air or nitrogen, is introduced. After the gas flows through the air inlet pipe 11, it accelerates the heat dissipation of the surface of the forming plate 13 by blowing air. This design not only improves the cooling efficiency, but also avoids the product deformation problem caused by excessive local temperature. The water inlet pipe 10 introduces cooling water, which carries away the heat of the forming plate 13 and the mold cavity 14 through liquid circulation. It can directly spray cooling water to cool the forming plate 13. Through the dual cooling mechanism of gas and liquid working together, the cooling time is significantly shortened and the production efficiency is improved.

[0019] The molding plate 13, located between the first mold plate 2 and the second mold plate 3, has an inwardly recessed surface forming a mold cavity 14 for injection molding. A hollow air inlet pipe 11 allows air to be circulated into it via an external air cooler, cooling the surface of the molding plate 13. Several ejector rods 12 pass through the first mold plate 2 and the second mold plate 3 and are movably mounted at the bottom of the mold base plate 1. These ejector rods 12 extend into the interior of the molding plate 13 to eject the molded product after injection molding, facilitating demolding. Rapid ejection of the molded product can be achieved by connecting cylinders or other equipment to the bottom of the ejector rods 12. In addition, a liquid inlet plate 9 is installed on the first template 2 and the second template 3 respectively. Several water inlet pipes 10 are distributed inside the liquid inlet plate 9. One end of these water inlet pipes 10 extends into the interior of the molding plate 13, and the other end is connected to the external cooling water circulation system. The shape of the mold cavity 14 matches the shape of the product to be injected to ensure accurate molding during the injection molding process. The molding plate 13 is made of a high thermal conductivity material, such as copper alloy, to accelerate the transfer and dissipation of heat. The air inlet pipe 11 and the water inlet pipe 10 extend into the interior of the molding plate 13 and achieve rapid cooling of the molding plate 13 and the mold cavity 14 through gas and liquid cooling methods respectively.

[0020] In this embodiment, the rapidly cooling injection mold blank has hollow air inlet pipes 11 on the sides of the first template 2 and the second template 3, which accelerate the flow of gas inside the molding plate 13 through symmetrically distributed airflow channels, thereby achieving rapid heat dissipation from the surface of the molding plate 13. Water can be directly introduced through the water inlet pipe 10. Through the dual cooling mechanism of liquid and gas, the temperature of the molding plate 13 and the mold cavity 14 can drop rapidly, achieving rapid cooling. Demolding can be easily carried out by setting several ejector pins 12, which greatly improves demolding efficiency.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rapidly cooling injection mold blank, comprising a mold base plate, wherein a first template and a second template are disposed on the surface of the mold base plate, and a forming plate is disposed on the mold base plate, characterized in that: The first and second templates are provided with several hollow air inlet pipes on their sides. One end of each air inlet pipe extends to the forming plate. Adjacent air inlet pipes are symmetrically arranged. The bottom of the mold base plate is provided with several movable push rods that pass through the first and second templates. Adjacent push rods are symmetrically arranged. The push rods extend into the interior of the forming plate. The first and second templates are each provided with a liquid inlet plate. The liquid inlet plate is provided with several interconnected water inlet pipes. One end of each water inlet pipe extends to the forming plate.

2. The rapidly cooling injection mold blank according to claim 1, characterized in that: The mold base plate has several positioning rods around its four edges, and the adjacent positioning rods are symmetrically arranged.

3. The rapidly cooling injection mold blank according to claim 1, characterized in that: The surface of the second template is provided with injection pipes, which extend to the top of the molding plate.

4. The rapidly cooling injection mold blank according to claim 1, characterized in that: The surface of the molding plate is recessed inward to form a mold cavity.

5. The rapidly cooling injection mold blank according to any one of claims 1-4, characterized in that: The bottom of the mold base plate is provided with two movable templates. Several movable rods penetrating the mold base plate are provided around the perimeter of the movable templates. Adjacent movable rods are symmetrically arranged, and each movable rod is provided with a return spring.

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