Injection mold for plastic shell assembly of industrial control element

Abstract

The utility model discloses an injection mold for a plastic shell component of an industrial control element, which mainly comprises an injection mold main body, an upper mold, a lower mold, an inner mold, a mold core and the like, and is characterized in that a plurality of structural designs are optimized, and an outer plate and an inner plate are provided with a water inlet, a water outlet and a cooling pipe in a matched manner to form an efficient cooling system, so that the mold can be uniformly cooled; the heat insulation plate and the heat conduction plate are reasonably arranged, the energy utilization efficiency is improved, the exhaust groove is formed in the top of the inner mold, injection molding gas is effectively exhausted, the defects of bubbles and the like of the product are avoided, the filter layer and the sealing ring are arranged at the injection molding opening, it is guaranteed that raw materials are pure, and leakage is prevented; and on the whole, the injection mold effectively improves the quality and the production efficiency of plastic products through a series of structural improvements.

Description

Technical Field

[0001] This utility model belongs to the technical field of injection molds, specifically relating to an injection mold for a plastic housing assembly of an industrial control component. Background Technology

[0002] Injection molds for industrial control component plastic housing assemblies are specialized molds used to manufacture these assemblies. Specifically, they are molds designed and manufactured based on the injection molding process. Their structure typically consists of two main parts: a moving mold and a fixed mold. High-temperature molten plastic raw material is injected into a closed mold cavity. Using the pressure provided by the injection molding machine, the molten plastic fills specific areas of the cavity. After the molten plastic cools and solidifies, the mold is opened, and the product is removed, yielding a plastic product that meets the shape, size, and precision requirements of the industrial control component housing assembly. These molds often require precise design and manufacturing based on the specific shape, functional requirements, and installation dimensions of the industrial control component's plastic housing assembly. This ensures that the produced housing assembly meets the stringent requirements of the industrial control field in terms of structural strength, sealing, and appearance quality, playing a crucial role in the manufacturing process of industrial control components.

[0003] However, the existing dedicated mold cooling pipes used for manufacturing plastic housing components for industrial control components consist of only one pipe, resulting in uneven mold cooling, inconsistent cooling rates of plastic products, and defects such as deformation and low dimensional accuracy, which affect product quality. Utility Model Content

[0004] The purpose of this utility model is to provide an injection mold for plastic housing components of industrial control components, so as to solve the problem mentioned in the background art that the existing special molds used to manufacture plastic housing components of industrial control components have only one cooling pipe, which leads to uneven mold cooling, inconsistent cooling speed of plastic products, and defects such as deformation and low dimensional accuracy, which affect product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for a plastic housing assembly of an industrial control component, comprising an injection mold body;

[0006] An upper mold is provided at the top of the injection mold body, a lower mold is provided at the bottom of the injection mold body, positioning holes are provided inside the upper and lower molds, an inner mold is provided inside the injection mold body, and a mold core is provided in the middle of the inner mold.

[0007] An outer plate is provided on the outer side of the upper and lower molds, an inner plate is provided on the inner side of the outer plate, a water inlet is provided on the front side of the outer plate, and a water outlet is provided on the right side of the water inlet.

[0008] Preferably, a branch pipe is provided at the rear side of the water inlet and outlet, and connecting pipes are arranged in an array inside the branch pipe.

[0009] Preferably, a cooling pipe is provided inside the inner plate, and the cooling pipe is connected to the branch pipe through a connecting pipe.

[0010] Preferably, a heat insulation plate is provided inside the outer panel, and a heat-conducting plate is provided inside the inner panel.

[0011] Preferably, a pressure valve is installed inside the connecting pipe of the branch pipe behind the water inlet, the cooling pipe has a U-shaped structure, and the cooling pipes are independent of each other.

[0012] Preferably, an venting groove is provided at the top of the inner mold, and a side plate is provided at the outer side of the inner mold.

[0013] Preferably, positioning blocks are provided at the front and rear sides of the inner mold, and the inner mold is nested with the lower mold through the positioning blocks. Grooves are provided at the left and right sides of the inner mold, and the side plates are nested with the inner mold through the grooves.

[0014] Preferably, a mounting plate is provided at the top of the upper mold, an injection port is provided at the top of the mounting plate, a filter layer is provided inside the injection port, and a sealing ring is provided at the middle position between the injection port and the mounting plate.

[0015] Compared with the prior art, this utility model provides an injection mold for plastic housing components of industrial control elements, which has the following advantages:

[0016] 1. Through the arrangement of branch pipes, connecting pipes, cooling pipes, heat insulation plates, heat conduction plates, and pressure valves, the cooling pipes have a loop-shaped structure and are independent of each other. This design allows the cooling medium, such as water, to uniformly cool all parts of the mold when flowing through the cooling pipes. The independent cooling pipes prevent short circuits or uneven flow of the cooling medium, ensuring that the temperature difference between different areas within the mold is minimized. This effectively reduces problems such as deformation and dimensional deviations in plastic products caused by uneven cooling, significantly improving product quality and dimensional accuracy. A pressure valve is installed inside the connecting pipe of the branch pipe behind the inlet. The pressure valve can precisely control the pressure and flow rate of the cooling medium entering each cooling pipe. According to the difference in heat generated in different parts of the mold during injection molding, the cooling effect can be further optimized by adjusting the pressure valve to ensure the stability of the quality of plastic products. A heat conduction plate is installed inside the inner plate. The heat-conducting plate has excellent thermal conductivity, which can quickly transfer the heat generated by the mold body to the surrounding cooling pipes, allowing the cooling medium to absorb heat more effectively and accelerate the cooling speed. At the same time, a heat insulation plate is set inside the outer plate, which can effectively prevent the heat inside the mold from dissipating outward, reducing heat loss, improving energy utilization efficiency, and reducing energy consumption costs in the injection molding process. Branch pipes are set behind the inlet and outlet, and connecting pipes are arrayed inside the branch pipes. The cooling pipes are connected to the branch pipes through the connecting pipes. This structure creates a reliable and efficient cooling circulation system. The cooling medium flows in from the inlet, is evenly distributed to each cooling pipe through the branch pipes and connecting pipes, and after absorbing the heat from the mold, it flows out from the outlet through the connecting pipes and branch pipes on the other side, forming a stable circulation flow, ensuring the continuous and stable cooling process, and providing reliable cooling guarantee for injection molding production.

[0017] 2. Through the design of venting grooves, side plates, positioning blocks, and recesses, the venting groove at the top of the inner mold plays a crucial role in the injection molding process. During injection, air and gases generated by the volatilization of raw materials within the mold cavity need to be expelled. The venting groove can effectively and promptly expel these gases from the cavity, preventing defects such as bubbles and voids inside the plastic product caused by residual gas. This ensures the appearance quality and internal structural integrity of the plastic product, improving the product yield. Recesses are provided on the left and right sides of the inner mold, and the side plates are nested with the inner mold through these recesses. This connection method allows the side plates to fit tightly against the outside of the inner mold, reinforcing the inner mold and enhancing its strength. The stability of the entire mold cavity structure effectively prevents displacement or deformation of the inner mold during injection molding, especially under high pressure from the injection material. This ensures the dimensional accuracy and molding quality of the plastic products. Positioning blocks are installed on both the front and rear sides of the inner mold, which is nested with the lower mold through these blocks. The positioning blocks provide a precise positioning reference for the installation of the inner mold, ensuring accurate relative positioning between the inner mold and the lower mold in the front-rear direction. This precise positioning and assembly method not only improves the efficiency of mold assembly but also ensures the consistency of the mold cavity during each injection, which helps improve the production accuracy and stability of plastic products and reduces product quality problems caused by mold assembly errors. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the inner mold in this utility model.

[0020] Figure 3 This is a schematic diagram of the injection port structure in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the outer plate in this utility model.

[0022] Figure 5 This is a schematic diagram of the inner plate in this utility model.

[0023] In the diagram: 1. Injection mold body; 2. Upper mold; 3. Lower mold; 4. Inlet; 5. Outlet; 6. Mounting plate; 7. Injection port; 8. Positioning hole; 9. Side plate; 10. Venting groove; 11. Inner mold; 12. Positioning block; 13. Insert groove; 14. Mold core; 15. Sealing ring; 16. Filter layer; 17. Outer plate; 18. Heat insulation plate; 19. Branch pipe; 20. Connecting pipe; 21. Pressure valve; 22. Inner plate; 23. Cooling pipe; 24. Heat conduction plate. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figure 1-5 The injection mold shown is for a plastic housing assembly of an industrial control component, including an injection mold body 1;

[0026] An upper mold 2 is provided at the top of the injection mold body 1, a lower mold 3 is provided at the bottom of the injection mold body 1, a positioning hole 8 is provided inside the upper mold 2 and the lower mold 3, an inner mold 11 is provided inside the injection mold body 1, and a mold core 14 is provided in the middle of the inner mold 11.

[0027] An outer plate 17 is provided on the outer side of the upper mold 2 and the lower mold 3, an inner plate 22 is provided on the inner side of the outer plate 17, a water inlet 4 is provided on the front side of the outer plate 17, and a water outlet 5 is provided on the right side of the water inlet 4.

[0028] A branch pipe 19 is installed at the rear of the inlet 4 and the outlet 5, and a connecting pipe 20 is arranged in an array inside the branch pipe 19.

[0029] A cooling pipe 23 is provided inside the inner plate 22, and the cooling pipe 23 is connected to the branch pipe 19 through a connecting pipe 20.

[0030] A heat insulation plate 18 is provided inside the outer panel 17, and a heat conduction plate 24 is provided inside the inner panel 22.

[0031] A pressure valve 21 is installed inside the connecting pipe 20 of the branch pipe 19 behind the water inlet 4. The cooling pipe 23 has a U-shaped structure and the cooling pipes 23 are independent of each other.

[0032] An venting groove 10 is provided at the top of the inner mold 11, and a side plate 9 is provided at the outer side of the inner mold 11.

[0033] Positioning blocks 12 are provided on the front and rear sides of the inner mold 11. The inner mold 11 is nested and connected to the lower mold 3 through the positioning blocks 12. Insert grooves 13 are provided on the left and right sides of the inner mold 11. The side plate 9 is nested and connected to the inner mold 11 through the insert grooves 13.

[0034] An installation plate 6 is provided at the top of the upper mold 2, an injection port 7 is provided at the top of the installation plate 6, a filter layer 16 is provided inside the injection port 7, and a sealing ring 15 is provided between the injection port 7 and the installation plate 6.

[0035] In this embodiment, the specific implementation steps of an injection mold for a plastic housing assembly of an industrial control component are as follows: The injection mold body 1 is placed in a suitable position on the injection molding machine. Precise positioning and installation are achieved using positioning pins and other tools through the positioning holes 8 inside the upper mold 2 and lower mold 3, ensuring the accurate relative positions of the upper mold 2 and lower mold 3 on the injection molding machine. This guarantees the mold closing accuracy during subsequent injection molding. The mounting plate 6 on the top of the upper mold 2 is connected to the injection molding device of the injection molding machine, ensuring a secure connection. The injection port 7 is aligned with the discharge port of the injection molding machine. Simultaneously, the process is checked... Check whether the filter layer 16 inside the injection port 7 is properly installed, and whether the sealing ring 15 between the injection port 7 and the mounting plate 6 has good sealing performance to prevent material leakage during injection. Connect the external cooling water source through the inlet 4 and the cooling return water pipe through the outlet 5. Ensure that the pressure valve 21 inside the connecting pipe 20 of the branch pipe 19 behind the inlet 4 is in normal working condition. The pressure valve 21 can be adjusted according to the actual needs of the mold to control the flow and pressure of the cooling medium. Turn on the cooling system to allow the cooling medium, such as water, to flow in from the inlet 4. Branch pipe 19 and connecting pipe 20 enter the loop-shaped cooling pipe 23 inside the inner plate 22. Since the cooling pipes 23 are independent of each other, the cooling medium can evenly cool all parts of the mold. After cooling is complete, the cooling medium flows from the cooling pipe 23 into the branch pipe 19 on the other side, and finally flows out from the outlet 5, forming a complete cooling cycle. Simultaneously, the heat insulation plate 18 inside the outer plate 17 reduces heat loss from the mold, and the heat-conducting plate 24 inside the inner plate 22 helps to better transfer heat from the mold to the cooling medium in the cooling pipe 23, thus cooling the inner plate 22. The inner mold 11 is nested with the lower mold 3 through the positioning blocks 12 on the front and rear sides, ensuring that the position of the inner mold 11 is accurately fixed in the front and rear direction. Then, the side plate 9 is nested with the inner mold 11 through the grooves 13 on the left and right sides of the inner mold 11, completing the overall installation and positioning of the inner mold 11. This ensures the assembly accuracy between the inner mold 11, the lower mold 3, and the side plate 9, providing a stable cavity structure for injection molding. When the plastic product cools to a certain degree, the injection molding machine controls the upper mold 2 to move upward to open the mold, and a complete injection molding production process ends.

[0036] like Figure 1 and Figure 4-5 As shown, a branch pipe 19 is provided at the rear of the water inlet 4 and the water outlet 5. A connecting pipe 20 is arranged in an array inside the branch pipe 19. A cooling pipe 23 is provided inside the inner plate 22. The cooling pipe 23 is connected to the branch pipe 19 through the connecting pipe 20. A heat insulation plate 18 is provided inside the outer plate 17. A heat conduction plate 24 is provided inside the inner plate 22. A pressure valve 21 is provided inside the connecting pipe 20 of the branch pipe 19 behind the water inlet 4. The cooling pipe 23 has a U-shaped structure and the cooling pipes 23 are independent of each other.

[0037] Preferably, the cooling pipes 23 have a loop-shaped structure and are independent of each other. This design allows the cooling medium, such as water, to uniformly cool all parts of the mold when flowing through the cooling pipes 23. The independent cooling pipes 23 can avoid short circuits or uneven flow of the cooling medium, ensuring that the temperature difference between different areas of the mold is minimized. This effectively reduces problems such as deformation and dimensional deviations of plastic products caused by uneven cooling, and significantly improves the quality and dimensional accuracy of the products. A pressure valve 21 is installed inside the connecting pipe 20 of the branch pipe 19 behind the inlet 4. The pressure valve 21 can precisely control the pressure and flow of the cooling medium entering each cooling pipe 23. According to the difference in heat generated in different parts of the mold during the injection molding process, the cooling effect can be further optimized by adjusting the pressure valve 21 to ensure the stability of the quality of the plastic products. A heat-conducting plate 24 is installed inside the inner plate 22. The heat-conducting plate 24 has good thermal conductivity and can quickly cool the mold. The cooling medium quickly transfers the heat generated by the mold body to the surrounding area of ​​the cooling pipe 23, allowing the cooling medium to absorb heat more effectively and accelerate the cooling speed. At the same time, a heat insulation plate 18 is provided inside the outer plate 17, which can effectively prevent the heat inside the mold from dissipating outward, reduce heat loss, improve energy utilization efficiency, and reduce energy consumption costs in the injection molding process. A branch pipe 19 is provided at the rear side of the inlet 4 and the outlet 5, and a connecting pipe 20 is arranged in an array inside the branch pipe 19. The cooling pipe 23 is connected to the branch pipe 19 through the connecting pipe 20. This structure creates a reliable and efficient cooling circulation system. The cooling medium flows in from the inlet 4, is evenly distributed to each cooling pipe 23 through the branch pipe 19 and the connecting pipe 20, and after absorbing the heat from the mold, it flows out from the outlet 5 through the connecting pipe 20 and the branch pipe 19 on the other side, forming a stable circulation flow to ensure the continuous and stable cooling process and provide reliable cooling guarantee for injection molding production.

[0038] like Figure 1 and Figure 2 As shown, an venting groove 10 is provided at the top of the inner mold 11, a side plate 9 is provided at the outer side of the inner mold 11, and positioning blocks 12 are provided at the front and rear sides of the inner mold 11. The inner mold 11 is nested and connected to the lower mold 3 through the positioning blocks 12. An insert groove 13 is provided at the left and right sides of the inner mold 11, and the side plate 9 is nested and connected to the inner mold 11 through the insert groove 13.

[0039] Preferably, the venting groove 10 located at the top of the inner mold 11 plays a crucial role in the injection molding process. During injection molding, air in the mold cavity and gases generated by the volatilization of raw materials need to be expelled. The venting groove 10 can effectively and promptly expel these gases from the cavity, preventing defects such as bubbles and voids inside the plastic product caused by residual gas. This ensures the appearance quality and internal structural integrity of the plastic product, improving the product yield. The inner mold 11 also has insert grooves 13 on its left and right sides. The side plates 9 are nested and connected to the inner mold 11 through these insert grooves 13. This connection method allows the side plates 9 to fit tightly against the outside of the inner mold 11, reinforcing the inner mold 11 and strengthening the entire mold cavity structure. The stability of the inner mold 11 is ensured during injection molding, effectively preventing displacement or deformation of the inner mold 11 in the face of high-pressure injection raw materials, thus ensuring the dimensional accuracy and molding quality of the plastic products. Positioning blocks 12 are set at the front and rear sides of the inner mold 11, and the inner mold 11 is nested and connected to the lower mold 3 through the positioning blocks 12. The positioning blocks 12 can provide a precise positioning reference for the installation of the inner mold 11, ensuring that the relative position of the inner mold 11 and the lower mold 3 in the front-rear direction is accurate. This precise positioning and assembly method not only improves the efficiency of mold assembly, but also ensures the consistency of the mold cavity during each injection, which is conducive to improving the production accuracy and stability of plastic products and reducing product quality problems caused by mold assembly errors.

[0040] like Figure 1 and Figure 3 As shown, an installation plate 6 is provided at the top of the upper mold 2, an injection port 7 is provided at the top of the installation plate 6, a filter layer 16 is provided inside the injection port 7, and a sealing ring 15 is provided between the injection port 7 and the installation plate 6.

[0041] Optionally, a filter layer 16 is provided inside the injection port 7 to effectively filter impurities in the injection molding material. A sealing ring 15 is provided between the injection port 7 and the mounting plate 6 to provide a good seal. The sealing ring 15 can prevent the material from leaking from the connection between the injection port 7 and the mounting plate 6, avoiding material leakage from polluting the equipment and working environment. It also ensures the normal delivery of the material and the stability of the injection pressure during the injection molding process, which is conducive to improving the efficiency and quality of injection molding.

[0042] 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. An injection mold for a plastic housing assembly of an industrial control component, comprising an injection mold body (1); An upper mold (2) is provided above the main body (1) of the injection mold, a lower mold (3) is provided below the main body (1), positioning holes (8) are provided inside the upper mold (2) and the lower mold (3), an inner mold (11) is provided inside the main body (1), and a mold core (14) is provided in the middle of the inner mold (11). Its features are: An outer plate (17) is provided on the outer side of the upper mold (2) and the lower mold (3), an inner plate (22) is provided on the inner side of the outer plate (17), a water inlet (4) is provided on the front side of the outer plate (17), and a water outlet (5) is provided on the right side of the water inlet (4).

2. The injection mold for a plastic housing assembly of an industrial control component according to claim 1, characterized in that: A branch pipe (19) is provided at the rear side of the water inlet (4) and the water outlet (5), and a connecting pipe (20) is arranged in an array inside the branch pipe (19).

3. The injection mold for a plastic housing assembly of an industrial control component according to claim 2, characterized in that: A cooling pipe (23) is provided inside the inner plate (22), and the cooling pipe (23) is connected to the branch pipe (19) through a connecting pipe (20).

4. The injection mold for a plastic housing assembly of an industrial control component according to claim 3, characterized in that: A heat insulation plate (18) is provided inside the outer plate (17), and a heat conduction plate (24) is provided inside the inner plate (22).

5. The injection mold for a plastic housing assembly of an industrial control component according to claim 4, characterized in that: A pressure valve (21) is installed inside the connecting pipe (20) of the branch pipe (19) behind the water inlet (4). The cooling pipe (23) has a U-shaped structure and the cooling pipes (23) are independent of each other.

6. The injection mold for a plastic housing assembly of an industrial control component according to claim 1, characterized in that: An exhaust groove (10) is provided at the top of the inner mold (11), and a side plate (9) is provided at the outer side of the inner mold (11).

7. The injection mold for a plastic housing assembly of an industrial control component according to claim 6, characterized in that: Positioning blocks (12) are provided on the front and rear sides of the inner mold (11). The inner mold (11) is nested with the lower mold (3) through the positioning blocks (12). Slots (13) are provided on the left and right sides of the inner mold (11). The side plate (9) is nested with the inner mold (11) through the slots (13).

8. The injection mold for a plastic housing assembly of an industrial control component according to claim 1, characterized in that: An installation plate (6) is provided at the top of the upper mold (2), an injection port (7) is provided at the top of the installation plate (6), a filter layer (16) is provided inside the injection port (7), and a sealing ring (15) is provided between the injection port (7) and the installation plate (6).

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