Injection mold and injection apparatus

Abstract

This utility model relates to the field of injection mold technology and discloses an injection mold and injection molding equipment, including a fixed mold (01) and a core insert (02). The fixed mold (01) is used to form a cavity for product molding, and the core insert (02) is disposed in the cavity to assist in product molding. The invention is characterized by further comprising: a first air passage (03) opened within the fixed mold (01), one end of which is opened on the surface of the fixed mold (01); a second air passage (04) opened within the core insert (02), with the other end of the first air passage (03) connected to one end of the second air passage (04); and a third air passage (05) opened within the fixed mold (01), one end of which is connected to the other end of the second air passage (04), and the other end of the third air passage (05) opened on the surface of the fixed mold (01). This design significantly reduces the mold production cycle and improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold and injection equipment. Background Technology

[0002] With the sustained prosperity of the national economy, the plastics industry is booming, and consumer market demand is strong. Injection molding, as an efficient and flexible manufacturing process, has widely penetrated all aspects of life. In recent years, with the continuous improvement of people's living standards, the pace of product replacement for injection molded products has accelerated significantly, and market demand has also increased daily. Against this backdrop, industry competition is becoming increasingly fierce, and enterprises urgently need to improve production efficiency and shorten manufacturing cycles through technological innovation to meet the growing market demand.

[0003] Traditional injection mold structures, when producing multi-pin insert plastic products, often suffer from excessively long production cycles when it's impossible to add sealing devices such as cooling channels and heat pipes to the mold structure to assist in mold cooling. This not only limits production efficiency but also fails to meet the urgent needs of enterprises for high-efficiency production. Therefore, developing an injection mold for multi-pin inserts that can effectively shorten cooling time and improve production efficiency has become a pressing technical challenge in the industry. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of existing multi-pin hole insert injection molds, where the pin hole inserts are small and cannot increase water channels and heat conduction cooling. This invention provides an injection mold and injection equipment that, through structural optimization and cooling system optimization, reduces the production cycle time and improves production efficiency.

[0005] To achieve the above objectives, this utility model provides an injection mold, including a fixed mold and a core insert. The fixed mold is used to form a cavity for product molding, and the core insert is disposed within the cavity to assist in product molding. The invention is characterized by further comprising: The first air passage is located inside the fixed mold, with one end of the first air passage located on the surface of the fixed mold. The second air passage is located inside the core insert, and the other end of the first air passage is connected to one end of the second air passage. The third air passage is located inside the fixed mold. One end of the third air passage is connected to the other end of the second air passage, and the other end of the third air passage is located on the surface of the fixed mold.

[0006] Optionally, the other end of the first air passage and one end of the third air passage are symmetrically arranged with respect to the core insert.

[0007] Optionally, the core insert includes: The base, the bottom surface of which is used to connect with the inner wall of the fixed mold; PIN hole insert, located on the top surface of the base; Both ends of the second air passage are located on the side of the base, and the second air passage is located in the base and the PIN hole insert.

[0008] Optionally, there are multiple second air passages disposed in the PIN hole insert, and each second air passage disposed in the PIN hole insert is connected to a second air passage disposed in the base.

[0009] Optionally, a groove is provided inside the cavity to fix the core insert; The other end of the first air passage and one end of the third air passage are both opened on the side wall of the groove to connect with the second air passage.

[0010] On the other hand, this utility model also provides an injection molding equipment, characterized in that it includes an injection molding machine base and an injection mold, wherein the injection mold includes: Fixed mold, used to form the cavity for product molding; Core inserts are placed inside the mold cavity to assist in product molding; The first air passage is located inside the fixed mold, with one end of the first air passage located on the surface of the fixed mold. The second air passage is located inside the core insert, and the other end of the first air passage is connected to one end of the second air passage. The third air passage is located inside the fixed mold. One end of the third air passage is connected to the other end of the second air passage, and the other end of the third air passage is located on the surface of the fixed mold.

[0011] Optionally, the other end of the first air passage and one end of the third air passage are symmetrically arranged with respect to the core insert.

[0012] Optionally, the core insert includes: The base, the bottom surface of which is used to connect with the inner wall of the fixed mold; PIN hole insert, located on the top surface of the base; Both ends of the second air passage are located on the side of the base, and the second air passage is located in the base and the PIN hole insert.

[0013] Optionally, there are multiple second air passages disposed in the PIN hole insert, and each second air passage disposed in the PIN hole insert is connected to a second air passage disposed in the base.

[0014] Optionally, a groove is provided inside the cavity to fix the core insert; The other end of the first air passage and one end of the third air passage are both opened on the side wall of the groove to connect with the second air passage.

[0015] Through the above technical solution, this utility model provides an injection mold and injection molding equipment. By optimizing the injection mold design after conventional injection mold design, air passages are added to the fixed mold and core insert. Cooling gas is introduced into the air passages, and a cooling gas channel formed by the combination of the first, second, and third air passages runs through the entire fixed mold and core insert, achieving rapid cooling of multi-pin insert type injection molds. This technical solution overcomes the problems of small pin inserts and inability to add water channels and heat conduction cooling in multi-pin insert type injection molds, significantly reducing the mold production cycle and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a gas cooling structure for a fixed mold of an injection mold according to one embodiment of the present invention; Figure 2 This is a schematic diagram of a gas cooling structure for a core insert in a fixed mold of an injection mold, according to one embodiment of the present invention. Figure 3 This is a schematic diagram of a gas cooling structure for a core insert of a moving mold in an injection mold, according to one embodiment of the present invention. Explanation of reference numerals in the attached figures Detailed Implementation

[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0018] In Figure 1 , Figure 2 and Figure 3 The injection mold may include a fixed mold 01, a core insert 02, a first air passage 03, a second air passage 04, a third air passage 05, and a moving mold 06. The core insert 02 may include a base 21 and a pin hole insert 22.

[0019] Specifically, the injection mold may include a fixed mold 01 and a core insert 02. The fixed mold 01 can be used to form a cavity for product molding, and the core insert 02 can be disposed in the cavity to assist in product molding.

[0020] The first air passage 03 can be formed within the fixed mold 01, and one end of the first air passage 03 can be formed on the surface of the fixed mold 01. Specifically, as shown... Figure 1As shown, the first air passage 03 is divided into three parts along the airflow direction. The first part is one end close to the surface of the fixed mold 01, and its horizontal distance must meet the requirement of extending from the surface of the fixed mold 01 to one end of the groove where the core insert 02 is placed. One end of the second part is sealed to the other end of the first part, and extends vertically along the side wall of the groove, with its vertical distance meeting the requirement of extending from the first part to the opening in the side wall of the groove. The third part is sealed to the other end of the second part, and passes through the opening in the side wall of the groove to connect to one end of the second air passage 04 inside the core insert 02.

[0021] The second air passage 04 is located within the core insert 02, and the other end of the first air passage 03 is connected to one end of the second air passage 04. For example... Figure 2 As shown, in one example of this utility model, considering that the PIN hole insert 22 of the core insert 02 inside the fixed mold 01 is relatively small, directly drilling through the PIN hole insert to form a complete circular air passage combination to form the second air passage 04 is difficult to process. Therefore, the second air passage 04 in the PIN hole insert 22 penetrating the fixed mold 01 can be formed by merging the semi-circular air passage holes processed on the surface of the PIN hole insert 22. For example... Figure 3 As shown, in one example of this utility model, considering that the PIN hole insert 22 of the core insert 02 inside the moving mold 06 is relatively large and easy to process, the second air passage 04 penetrating the PIN hole insert 22 of the moving mold 06 can be formed by a linear arrangement of air passage holes directly drilled on the PIN hole. However, the specific formation method of the second air passage 04 inside the PIN hole insert 22 can be designed according to the specific types of PIN hole inserts 22 of various mold inserts known to those skilled in the art.

[0022] The third air passage 05 is located within the fixed mold 01. One end of the third air passage 05 is connected to the other end of the second air passage 04, and the other end of the third air passage 05 is located on the surface of the fixed mold 01. The structure of the third air passage 05 is completely identical to that of the first air passage 03. The cooling gas channel formed by the combination of the first air passage 03, the second air passage 04, and the third air passage 05 runs through the entire fixed mold 01 and the core insert 02.

[0023] Specifically, the other end of the first air passage 03 and the other end of the third air passage 05 can be symmetrically arranged relative to the core insert 02 to form a complete air passage channel, realizing the entry and exit of cooling gas.

[0024] Specifically, the core insert 02 may include a base 21 and a pin hole insert 22. The bottom surface of the base 21 can be used to connect with the inner wall of the fixed mold 01, and the pin hole insert 22 can be disposed on the top surface of the base 21. However, the number of pin hole inserts 22 is relatively large, their diameter is small, and they cannot meet the requirements of conventional water channel configurations. One end and the other end of the second air passage 04 can both be opened on the side of the base 21, and the second air passage 04 can be disposed in the base 21 and the pin hole insert 22.

[0025] Specifically, there can be multiple second air passages 04 disposed in the PIN hole insert 22, and each second air passage 04 disposed in the PIN hole insert 22 can be connected to the second air passage 04 disposed in the base 21.

[0026] Specifically, a groove is provided inside the cavity to fix the core insert 02. The other end of the first air passage 03 and one end of the third air passage 05 can both be opened on the side wall of the groove to connect with the second air passage 04.

[0027] On the other hand, this utility model also provides an injection molding device, including an injection molding machine and an injection mold. The injection mold may include: a fixed mold 01 for forming a cavity for product molding; and a core insert 02, which can be disposed within the cavity to assist in product molding.

[0028] The first air passage 03 can be formed within the fixed mold 01, and one end of the first air passage 03 can be formed on the surface of the fixed mold 01. Specifically, as shown... Figure 1 As shown, the first air passage 03 is divided into three parts along the airflow direction. The first part is one end close to the surface of the fixed mold 01, and its horizontal distance must meet the requirement of extending from the surface of the fixed mold 01 to one end of the groove where the core insert 02 is placed. One end of the second part is sealed to the other end of the first part, and extends vertically along the side wall of the groove, with its vertical distance meeting the requirement of extending from the first part to the opening in the side wall of the groove. The third part is sealed to the other end of the second part, and passes through the opening in the side wall of the groove to connect to one end of the second air passage 04 inside the core insert 02.

[0029] The second air passage 04 is located within the core insert 02, and the other end of the first air passage 03 is connected to one end of the second air passage 04. For example... Figure 2 As shown, in one example of this utility model, considering that the PIN hole insert 22 of the core insert 02 inside the fixed mold 01 is relatively small, directly drilling through the PIN hole insert 22 to form a complete circular air passage combination to form the second air passage 04 is difficult to process. Therefore, the second air passage 04 in the PIN hole insert 22 penetrating the fixed mold 01 can be formed by merging the semi-circular arc-shaped air passage holes processed on the surface of the PIN hole insert 22. For example... Figure 3 As shown, in one example of this utility model, considering that the PIN hole insert 22 of the core insert 02 inside the moving mold 06 is relatively large and easy to process, the second air passage 04 penetrating the PIN hole insert 22 of the moving mold 06 can be formed by a linear arrangement of circular air passage holes directly drilled on the PIN hole insert 22. However, the specific formation method of the second air passage 04 inside the PIN hole insert 22 can be designed according to the specific types of PIN hole inserts 22 of various mold inserts known to those skilled in the art.

[0030] The third air passage 05 is located within the fixed mold 01. One end of the third air passage 05 is connected to the other end of the second air passage 04, and the other end of the third air passage 05 is located on the surface of the fixed mold 01. The structure of the third air passage 05 is completely identical to that of the first air passage 03. The cooling gas channel formed by the combination of the first air passage 03, the second air passage 04, and the third air passage 05 runs through the entire fixed mold 01 and the core insert 02.

[0031] Specifically, the other end of the first air passage 03 and the other end of the third air passage 05 can be symmetrically arranged relative to the core insert 02 to form a complete air passage channel, realizing the entry and exit of cooling gas.

[0032] Specifically, the core insert 02 may include a base 21 and a pin hole insert 22. The bottom surface of the base 21 can be used to connect with the inner wall of the fixed mold 01, and the pin hole insert 22 can be disposed on the top surface of the base 21. However, the number of pin hole inserts 22 is relatively large, their diameter is small, and they cannot meet the requirements of conventional water channel configurations. One end and the other end of the second air passage 04 can both be opened on the side of the base 21, and the second air passage 04 can be disposed in the base 21 and the pin hole insert 22.

[0033] Specifically, there can be multiple second air passages 04 disposed in the PIN hole insert 22, and each second air passage 04 disposed in the PIN hole insert 22 can be connected to the second air passage 04 disposed in the base 21.

[0034] Specifically, a groove is provided inside the cavity to fix the core insert 02. The other end of the first air passage 03 and one end of the third air passage 05 can both be opened on the side wall of the groove to connect with the second air passage 04.

[0035] In this embodiment, after the injection molding holding pressure is completed, cooling gas is introduced into one end of the first air passage 03. The combination of the first air passage 03, the second air passage 04, and the third air passage 05, along with the cooling gas, reduces the temperature of the insert, shortens the cooling time, and improves production efficiency. Before the injection process of the next mold begins, the air supply must be stopped and the cooling gas in the air passage structure must be discharged to ensure that the cooling gas does not interfere with the flow and filling of the injection molding material during injection, and also to avoid the potential impact of gas leakage on product quality.

[0036] Through the above embodiments, this utility model provides a gas cooling structure for injection mold inserts. This structure overcomes the problems of small pin hole inserts and inability to add water channels and heat conduction cooling in multi-pin hole insert injection molds in the prior art by adding multiple sets of air passage structures to the front and rear molds after conventional mold design. This significantly reduces the mold production cycle and improves production efficiency.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. An injection mold, comprising a fixed mold (01) and a core insert (02), wherein the fixed mold (01) is used to form a cavity for product molding, and the core insert (02) is disposed within the cavity to assist in product molding, characterized in that, Also includes: The first air passage (03) is opened in the fixed mold (01), and one end of the first air passage (03) is opened on the surface of the fixed mold (01); The second air passage (04) is opened in the core insert (02), and the other end of the first air passage (03) is connected to one end of the second air passage (04); The third air passage (05) is located inside the fixed mold (01). One end of the third air passage (05) is connected to the other end of the second air passage (04), and the other end of the third air passage (05) is located on the surface of the fixed mold (01).

2. The injection mold according to claim 1, characterized in that, The other end of the first air passage (03) and one end of the third air passage (05) are symmetrically arranged relative to the core insert (02).

3. The injection mold according to claim 1, characterized in that, The core insert (02) includes: The base (21) has a bottom surface for connecting with the inner wall of the fixed mold (01); A PIN hole insert (22) is disposed on the top surface of the base (21); One end and the other end of the second air passage (04) are both opened on the side of the base (21), and the second air passage (04) is disposed in the base (21) and the PIN hole insert (22).

4. The injection mold according to claim 3, characterized in that, There are multiple second air passages (04) provided in the PIN hole insert (22), and each second air passage (04) provided in the PIN hole insert (22) is connected to the second air passage (04) provided in the base (21).

5. The injection mold according to claim 4, characterized in that, The cavity is provided with a groove to fix the core insert (02). The other end of the first air passage (03) and one end of the third air passage (05) are both opened on the side wall of the groove to connect with the second air passage (04).

6. An injection molding machine, characterized in that, It includes an injection molding machine and an injection mold, wherein the injection mold includes: Fixed mold (01), used to form the cavity for product molding; A core insert (02) is disposed within the cavity to assist in product molding; The first air passage (03) is opened in the fixed mold (01), and one end of the first air passage (03) is opened on the surface of the fixed mold (01); The second air passage (04) is opened in the core insert (02), and the other end of the first air passage (03) is connected to one end of the second air passage (04); The third air passage (05) is located inside the fixed mold (01). One end of the third air passage (05) is connected to the other end of the second air passage (04), and the other end of the third air passage (05) is located on the surface of the fixed mold (01).

7. The injection molding equipment according to claim 6, characterized in that, The other end of the first air passage (03) and one end of the third air passage (05) are symmetrically arranged relative to the core insert (02).

8. The injection molding equipment according to claim 6, characterized in that, The core insert (02) includes: The base (21) has a bottom surface for connecting with the inner wall of the fixed mold (01); A PIN hole insert (22) is disposed on the top surface of the base (21); One end and the other end of the second air passage (04) are both opened on the side of the base (21), and the second air passage (04) is disposed in the base (21) and the PIN hole insert (22).

9. The injection molding equipment according to claim 8, characterized in that, There are multiple second air passages (04) provided in the PIN hole insert (22), and each second air passage (04) provided in the PIN hole insert (22) is connected to the second air passage (04) provided in the base (21).

10. The injection molding equipment according to claim 9, characterized in that, The cavity is provided with a groove to fix the core insert (02). The other end of the first air passage (03) and one end of the third air passage (05) are both opened on the side wall of the groove to connect with the second air passage (04).

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