Aluminum insert rubber coating injection mold

Abstract

The utility model provides an aluminum insert rubber coating injection mold, and belongs to the technical field of injection molding. The main insert hole communicated with the fixed die cavity is formed in the fixed die with the fixed die cavity, the cavity insert with the secondary insert hole is arranged in the main insert hole in a sliding manner, and the elastic ejection insert with the ejection spring is arranged in the secondary insert hole in a sliding manner, so that the structure of the fixed die pressing aluminum insert is a splicing structure of the cavity insert and the elastic ejection insert; when the aluminum insert is pressed, linear exhaust is achieved, an exhaust structure does not need to be designed additionally in a targeted mode, meanwhile, the device can adapt to aluminum inserts with different actual thicknesses through the sliding dynamic state of the cavity insert and the elastic ejection insert, dynamic adjustment is achieved, adaptability is better, in addition, a product can be ejected out through the elastic ejection insert, the accidental adhesion problem is prevented, and the production efficiency is improved. And in addition, the whole structure is simple, the manufacturing cost is low, the machining efficiency is improved, and the large-scale production requirement of products is met.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an aluminum insert overmolding injection mold. Background Technology

[0002] With the development and popularization of new energy vehicle technology, the demand for its power batteries has increased significantly, leading to a corresponding increase in the demand for positive and negative electrode coating components. At this time, the positive and negative electrode coating components for power batteries are as follows: Figure 1 As shown, attached Figure 1 The positive and negative electrode coating components for a new energy power battery have an aluminum insert 3. The outer edge and sidewall of one side of the aluminum insert 3 are wrapped with a coating layer 31, achieving integral injection molding of the coating layer 31 onto the aluminum insert 3. In addition, a through hole 32 is opened in the center of the aluminum insert 3, and a groove 33 is also formed around the outer edge of the aluminum insert 3 wrapped with the coating layer 31 outside the hole 32.

[0003] Currently, molds used for injection molding the positive and negative electrode overlay components of the aforementioned power batteries typically include an upper mold and a lower mold. Each mold has a cavity on an opposite side. When the upper and lower molds are closed, the two cavities connect to form a molded cavity. The aluminum insert is first placed in the lower mold cavity. Then, after the upper and lower molds are closed, the overlay is injected into the cavity. After the overlay has cured, the upper and lower molds are opened, and the product is removed from the cavity, completing the unloading process. Furthermore, to improve the stability of the aluminum insert after placement in the lower mold cavity, a positioning protrusion is usually provided within the lower mold cavity. The insert's sleeve hole fits onto the positioning protrusion, limiting the insert's position and preventing positional movement during injection molding that could affect processing accuracy. While the aforementioned structure meets the injection molding requirements for the positive and negative electrode coating components of power batteries, it leaves grooves in the areas not covered by the injection molding. Furthermore, to ensure the coating fills the entire cavity during injection molding, a specially designed venting structure is needed, resulting in a complex mold structure and higher manufacturing costs. Additionally, after injection molding, the product tends to stick to the mold, requiring workers to use tools to remove it from the cavity, which is inconvenient, affects processing efficiency, and hinders large-scale manufacturing. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention aims to provide an aluminum insert overmolding injection mold, which includes a fixed mold and a movable mold that moves relative to the fixed mold. A fixed mold cavity and a movable mold cavity are respectively formed on opposite sides of the fixed mold and the movable mold. After mold closing, the fixed mold cavity and the movable mold cavity form a cavity. A positioning insert is provided in the movable mold cavity to restrict the aluminum insert, and a cavity insert is provided in the fixed mold. Simultaneously, a spring-loaded insert is provided within the cavity insert. The cavity insert and the spring-loaded insert press the aluminum insert together, achieving an interlocking design at the contact point between the cavity and the aluminum insert. This design not only enables venting but also allows for automatic height adjustment based on the thickness of the aluminum insert, achieving dynamic pressing. Furthermore, the elastic insert can eject the product from the cavity, preventing the product from sticking to the mold, facilitating material unloading, improving processing efficiency, and benefiting large-scale product manufacturing.

[0005] The specific technical solution is as follows:

[0006] An aluminum insert overmolding injection mold includes a fixed mold and a movable mold that moves relative to the fixed mold. A fixed mold cavity and a movable mold cavity are respectively provided on opposite sides of the fixed mold and the movable mold. When the fixed mold and the movable mold are closed, the fixed mold cavity and the movable mold cavity form a molded cavity, in which the aluminum insert is placed. The mold also includes a cavity insert and a spring-loaded insert. A main insert hole communicating with the bottom of the fixed mold cavity is provided in the fixed mold. The cavity insert is slidably disposed within the main insert hole. Simultaneously, a secondary insert hole arranged in the same direction as the main insert hole is provided on the cavity insert. The spring-loaded insert is slidably disposed within the secondary insert hole. Furthermore, anti-detachment limiting structures are provided between the cavity insert and the main insert hole, and between the spring-loaded insert and the secondary insert hole. Additionally, an ejection spring is provided between the end of the spring-loaded insert facing away from the fixed mold cavity and the fixed mold.

[0007] In the aforementioned aluminum insert overmolded injection mold, the joint between one end of the cavity insert located within the fixed mold cavity and the other end of the ejector insert located within the fixed mold cavity is within the groove range of the aluminum insert.

[0008] In the aforementioned aluminum insert overmolding injection mold, the anti-detachment limiting structure includes a limiting notch and a limiting protrusion. Limiting notches are provided on the inner sidewalls of both the main insert and the secondary insert, each located at an end away from the fixed mold cavity. The limiting notch on the main insert communicates with the main insert, and the limiting notch on the secondary insert communicates with the secondary insert. Laterally protruding limiting protrusions are provided on the outer sidewalls of both the cavity insert and the ejector insert, each located at an end away from the fixed mold cavity. The limiting protrusion of the cavity insert is slidably disposed within the limiting notch of the main insert, and the limiting protrusion of the ejector insert is slidably disposed within the limiting notch of the secondary insert.

[0009] In the aforementioned aluminum insert overmolding injection mold, an assembly hole is provided at the center of the end of the ejector insert away from the fixed mold cavity, and one end of the ejector spring is inserted into the assembly hole and abuts against the bottom of the assembly hole.

[0010] The above-mentioned aluminum insert overmolding injection mold further includes a positioning insert, one end of which is fixed to the moving mold and the other end extends into the moving mold cavity, and the sleeve hole of the aluminum insert is fitted outside the positioning insert.

[0011] In the aforementioned aluminum insert overmolding injection mold, the end of the spring insert facing away from the ejector spring is provided with a mating hole, and when the mold is closed, one end of the positioning insert is inserted into the mating hole.

[0012] In the aforementioned aluminum insert overmolding injection mold, the edge of the end face of the positioning insert extending into the moving mold cavity is provided with a guide slope.

[0013] The aforementioned aluminum insert overmolding injection mold further includes an ejector assembly disposed on a moving mold. The ejector assembly includes an ejector rod and an ejector block. A sliding hole communicating with the moving mold cavity is provided on the moving mold along its moving direction. The ejector block is slidably disposed in the sliding hole. At the same time, a telescopic hole extending in the same direction is provided on the side of the sliding hole away from the moving mold cavity. The ejector rod is slidably disposed in the telescopic hole, and one end of the ejector rod is connected to the ejector block. The end face of the ejector block away from the ejector rod coincides with the most protruding surface of the aluminum insert on the bottom side of the moving mold cavity.

[0014] In the above-mentioned aluminum insert overmolding injection mold, a clearance hole is provided on the top block, and the positioning insert is slidably disposed in the clearance hole.

[0015] In the above-mentioned aluminum insert overmolding injection mold, the opening edge of the fixed mold cavity is arranged with a chamfer to form a fixed mold chamfer surface. A runner is provided on the fixed mold, one end of which is connected to the fixed mold cavity and forms a gate. The gate overlaps on the fixed mold chamfer surface and is located within the range of the fixed mold chamfer surface.

[0016] The positive effects of the above technical solution are:

[0017] The aforementioned aluminum insert overmolding injection mold, by setting a fixed mold with a fixed cavity and a moving mold with a moving cavity, forms an injection cavity when the mold is closed. The fixed mold has a main insert hole that communicates with the fixed cavity, and a cavity insert is slidably placed in the main insert hole. At the same time, a secondary insert hole is set on the cavity insert, which is arranged in the same direction as the main insert hole and communicates with the fixed mold cavity. A spring insert is slidably placed in the secondary insert hole. Meanwhile, an ejector spring is set between the end of the spring insert away from the fixed cavity and the fixed mold. The structure of the fixed mold for pressing the aluminum insert in the cavity is formed by the cavity insert and the spring insert. This not only achieves venting without setting a separate venting structure, but also automatically adjusts the height according to the thickness of the aluminum insert, improving adaptability. In addition, the spring insert can eject the product from the cavity after the mold is opened, preventing sticking and facilitating material unloading. It not only has a simple structure and low manufacturing cost, but also improves processing efficiency and is conducive to large-scale manufacturing of products. Attached Figure Description

[0018] Figure 1 For the positive and negative electrode coating components of power batteries for new energy sources;

[0019] Figure 2 This is a structural diagram of an embodiment of an aluminum insert overmolding injection mold according to the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the cavity insert, the spring insert, and the ejector spring on the fixed mold according to a preferred embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the cavity insert and spring insert from another perspective, representing a preferred embodiment of the present invention.

[0022] Figure 5 for Figure 2 Enlarged view of section A;

[0023] Figure 6 for Figure 2 Larger image in section B.

[0024] In the attached diagram: 1. Fixed mold; 11. Fixed mold cavity; 12. Main insert hole; 13. Limiting notch; 111. Fixed mold chamfered surface; 2. Moving mold; 21. Moving mold cavity; 22. Sliding hole; 3. Aluminum insert; 31. Rubber coating layer; 32. Sleeve hole; 33. Groove; 311. Product chamfered surface; 4. Cavity insert; 41. Secondary insert hole; 42. Limiting protrusion; 5. Spring insert; 51. Assembly hole; 52. Butt hole; 6. Ejector spring; 7. Positioning insert; 71. Guide slope; 8. Ejector block; 81. Clearance hole; 9. Runner; 91. Gate. Detailed Implementation

[0025] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following embodiments are provided in conjunction with the appendix. Figure 2 To be continued Figure 6 The technical solution provided by this utility model is described in detail, but the following content is not intended to limit this utility model.

[0026] Figure 2 This is a structural diagram of an embodiment of an aluminum insert overmolding injection mold according to the present invention; Figure 3 This is a schematic diagram illustrating the installation of the cavity insert, the spring insert, and the ejector spring on the fixed mold according to a preferred embodiment of this utility model. Figure 2 , Figure 3As shown, the aluminum insert overmolding injection mold provided in this embodiment includes: a fixed mold 1 and a movable mold 2 that moves relative to the fixed mold 1. The fixed mold 1 and the movable mold 2 are respectively provided with a fixed mold cavity 11 and a movable mold cavity 21 on opposite sides. When the fixed mold 1 and the movable mold 2 are closed, the fixed mold cavity 11 and the movable mold cavity 21 combine to form a cavity. The aluminum insert 3 of the positive and negative electrode overmolding parts of the new energy power battery to be injected is placed in the cavity. After the injection molding is completed and the mold is opened, the obtained positive and negative electrode overmolding parts of the new energy power battery are ejected from the cavity to achieve material unloading, thus completing one injection molding process.

[0027] Figure 4 This is a schematic diagram of the cavity insert and spring insert from another perspective, representing a preferred embodiment of the present invention. Figures 2 to 4 As shown, a main insert hole 12 is formed in the fixed mold 1, connecting to the bottom of the fixed mold cavity 11. A cavity insert 4 is slidably disposed within the main insert hole 12, allowing the cavity insert 4 to slide within the main insert hole 12. This provides the conditions for subsequently adjusting its height adaptively according to the actual thickness of the aluminum insert 3. Simultaneously, a secondary insert hole 41, arranged in the same direction as the main insert hole 12, is formed on the cavity insert 4. A spring-loaded insert 5 is slidably disposed within the secondary insert hole 41, ensuring that the movement directions of the spring-loaded insert 5 and the cavity insert 4 are aligned. This provides the conditions for the spring-loaded insert 5 to eject the product and prevent sticking. Furthermore, an anti-detachment limiting structure is provided between the cavity insert 4 and the main insert hole 12. Similarly, an anti-detachment limiting structure is also provided between the spring-loaded insert 5 and the secondary insert hole 41. These anti-detachment limiting structures prevent the cavity insert 4 from accidentally detaching from the main insert hole 12 and also prevent the elastic insert from accidentally detaching from the secondary insert hole 41, maintaining structural reliability. Furthermore, this design allows the spring-loaded insert 5 to act on the cavity insert 4, providing a stable abutment between the cavity insert 4 and the aluminum insert 3 during subsequent injection molding, thus limiting the overmolding area. Additionally, the structure of the ejector mold abutting the aluminum insert 3 is a combination of the cavity insert 4 and the spring-loaded insert 5. This satisfies both the pressure requirements on the aluminum insert 3 and the need to limit the overmolding, while also allowing for venting without a dedicated venting structure. The structure is simple and has lower manufacturing costs. Simultaneously, an ejector spring 6 is installed between the end of the spring-loaded insert 5 facing away from the fixed mold cavity 11 and the fixed mold 1. The ejector spring 6 provides the thrust for the elastic insert to eject the product from the fixed mold cavity 11, preventing product sticking and difficulty in unloading, improving unloading convenience, increasing processing efficiency, and facilitating large-scale production. In addition, since the cavity insert 4 and the spring insert 5 are interlocking structures and can slide in the main insert hole 12 and the secondary insert hole 41 respectively, the height of both extending into the fixed mold cavity 11 can be adaptively adjusted according to the actual thickness of the aluminum insert 3, so as to meet the requirements of adaptive clamping. The structure is more flexible and adaptable.

[0028] More specifically, after the mold is closed, when the cavity insert 4 and the ejector insert 5 press against the aluminum insert in the cavity, the joint between the end of the cavity insert 4 located in the fixed mold cavity 11 and the end of the ejector insert 5 located in the fixed mold cavity 11 is within the groove 33 of the aluminum insert 3. This makes full use of the space of the groove 33 to connect with the joint of the cavity insert 4 and the ejector insert 5, so that there is no structural obstruction at the joint of the two, the venting is smoother, and the venting effect is improved.

[0029] More specifically, the anti-detachment limiting structures between the main insert 12 and the cavity insert 4, and between the secondary insert 41 and the ejector insert 5, both include limiting notches 13 and limiting protrusions 42. At this time, limiting notches 13 are provided on the inner walls of the main insert 12 and the secondary insert 41, both located at the end opposite to the fixed mold cavity 11. The limiting notches 13 on the main insert 12 are connected to the main insert 12, and the limiting notches 13 on the secondary insert 41 are connected to the secondary insert 41, facilitating direct engagement between the cavity insert 4 installed in the main insert 12 and the ejector insert 5 installed in the secondary insert 41 and the corresponding limiting notches 13 in the main insert 12 and secondary insert 41. Simultaneously, laterally protruding limiting protrusions 42 are provided on the outer walls of the cavity insert 4 and the ejector insert 5, both located at the end opposite to the fixed mold cavity 11. During assembly, the limiting protrusion 42 of the cavity insert 4 is slidably positioned within the limiting notch 13 of the main insert hole 12, and the limiting protrusion 42 of the spring insert 5 is slidably positioned within the limiting notch 13 of the secondary insert hole 41. The height adjustment requirements of the cavity insert 4 and the spring insert 5 are met by the sliding of the limiting protrusion 42 within the corresponding limiting notch 13. At the same time, the cavity insert is prevented from accidentally falling out of the main insert hole 12 and the spring insert 5 is prevented from accidentally falling out of the secondary insert hole 41 by the abutment of the walls of the limiting protrusion 42 and the limiting notch 13. The structural design is more reasonable.

[0030] More specifically, an assembly hole 51 is provided at the center of the end of the spring insert 5 away from the fixed mold cavity 11. At the same time, one end of the ejector spring 6 is inserted into the assembly hole 51 and abuts against the bottom of the assembly hole 51. That is, the assembly hole 51 realizes the stable installation of the ejector spring 6 on the spring insert 5, preventing the ejector spring 6 from shifting during use and causing uneven force on the elastic insert, thereby ensuring that the elastic insert can stably eject the product.

[0031] Figure 5 for Figure 2 An enlarged view of part A in the image. (See image below.) Figure 2 and Figure 5As shown, the moving mold 2 is also provided with a positioning insert 7. At this time, one end of the positioning insert 7 is fixed on the moving mold 2 and the other end extends into the moving mold cavity 21, so that when the aluminum insert 3 is placed in the cavity, the sleeve hole 32 of the aluminum insert 3 can be fitted outside the positioning insert 7, so as to realize the accurate positioning of the aluminum insert 3 in the cavity, maintain the stability of the aluminum insert 3 in the injection molding process, and ensure product quality.

[0032] More specifically, a mating hole 52 is provided at the end of the spring insert 5 away from the ejector spring 6. That is, a mating hole 52 is provided on the end face of the elastic insert at one end of the fixed mold cavity 11. When the moving mold 2 and the fixed mold 1 are closed, one end of the positioning insert 7 is inserted into the mating hole 52, realizing the mating of the positioning insert 7 and the spring insert 5. This allows the aluminum insert 3 located in the cavity to be limited in multiple directions through the positioning insert 7 and the spring insert 5, further ensuring the stability of the aluminum insert 3 during the overmolding process.

[0033] More specifically, the outer edge of the end face of the positioning insert 7 extending into the moving mold cavity 21 is arranged in a bevel to form a guide bevel 71, so that when the positioning insert 7 is inserted into the mating hole 52 of the elastic insert, it can be quickly guided and fitted by the guide bevel 71, ensuring that the positioning insert 7 can be accurately inserted into the mating hole 52.

[0034] More specifically, the moving mold 2 is also equipped with an ejector assembly, which ejects the product from the moving mold cavity 21, facilitating the unloading operation. Combined with the above-mentioned ejector insert 5 that can eject the product from the fixed mold cavity 11, it ensures that the product will not stick to the moving mold 2 or the fixed mold 1 after the mold is opened, making it easier for the staff to unload the product. At this time, the ejection assembly includes an ejector rod and an ejector block 8. The moving mold 2 has a sliding hole 22 that connects to the moving mold cavity 21 along its moving direction. During assembly, the ejector block 8 is slidably disposed in the sliding hole 22. At the same time, a telescopic hole extending in the same direction is provided on the side of the sliding hole 22 away from the moving mold cavity 21, and the ejector rod is slidably disposed in the telescopic hole. One end of the ejector rod is connected to the ejector block 8, so that the ejector rod can push the ejector block 8 to slide in the sliding hole 22. During injection molding, the end face of the ejector block 8 away from the end connected to the ejector rod forms the bottom of the moving mold cavity 21. When it is necessary to unload the material after injection molding, the ejector rod can push the ejector block 8 to move, and the ejector block 8 can eject the product located in the moving mold cavity 21, which makes it convenient for the staff to perform the unloading operation, making the operation more convenient and efficient. In addition, the end face of the ejector block 8 away from the ejector rod is aligned with the most protruding surface of the aluminum insert 3 on the bottom side of the moving mold cavity 21, so that the end face of the ejector block 8 can completely fit the most protruding surface of the aluminum insert 3, and the two are the same size, achieving full contact between the two. This allows the most protruding surface of the aluminum insert 3 to bear the force as a whole, avoiding the problem of indentation caused by the force being concentrated on a small area of ​​the aluminum insert 3. This ensures that the product is ejected and easy to unload, while also ensuring product quality.

[0035] More specifically, a clearance hole 81 is also provided on the top block 8. During assembly, the positioning insert 7 is slidably set in the clearance hole 81. That is, the clearance hole 81 provides a condition for the positioning insert 7 to extend into the moving mold cavity 21 after passing through the top block 8. At the same time, it also provides a condition for the product to be ejected after the positioning insert 7 is fixed and the top block 8 moves relative to the positioning insert 7. While satisfying the limitation of the aluminum insert 3, it can also prevent interference with the movement of the top block 8, and the structural design is more reasonable.

[0036] Figure 6 for Figure 2 A magnified view of section B. (See image below.) Figure 2 and Figure 6 As shown, the opening edge of the fixed mold cavity 11 is chamfered to form a fixed mold chamfer surface 111, thereby forming a product chamfer surface 311 on the outer edge of the overmolded product 31, eliminating the need for subsequent chamfering operations. Furthermore, a runner 9 is provided on the fixed mold 1, with one end of the runner 9 connected to the fixed mold cavity 11 to form a gate 91. This allows liquid overmolded material to enter the cavity through the runner 9 and gate 91 and wrap around the aluminum insert 3, thus forming an overmolded layer 31 on the outside of the aluminum insert 3. At this point, the gate 91 overlaps with the chamfered surface 111 of the fixed mold and is located within the area of ​​the chamfered surface 111, making the gate 91 obliquely connected to the fixed mold cavity 11. This allows for an increase in the flow cross-section, improved flow rate, and prevention of clogging while maintaining the height of the gate 91. In other words, the height of the gate 91 can be effectively reduced while ensuring flow rate and preventing clogging, so that the gate 91 can be completely within the area of ​​the chamfered surface of the top mold. This ensures that when the gate 91 is broken, any residue from the gate 91 can break along the formed chamfered surface 311 of the product, effectively reducing residue. In addition, it ensures that any residue is completely within the chamfered surface 311 of the product and does not protrude above the large surface of the product, so that the residue will not interfere with the installation and use of the product, resulting in a more reasonable structural design.

[0037] The aluminum insert overmolding injection mold provided in this embodiment includes a fixed mold 1 and a moving mold 2. By opening a main insert hole 12 communicating with the fixed mold cavity 11 on the fixed mold 1, a cavity insert 4 with a secondary insert hole 41 is slidably arranged in the main insert hole 12, and a spring insert 5 with an ejection spring 6 is slidably arranged in the secondary insert hole 41. This allows the structure of the fixed mold 1 pressing the aluminum insert 3 to be a combination of the cavity insert 4 and the spring insert 5. While satisfying the pressing of the aluminum insert 3, it also achieves venting in a straight line without the need for a separate venting structure. At the same time, the sliding of the cavity insert 4 and the spring insert 5 can dynamically adapt to aluminum inserts 3 with different actual thicknesses, achieving dynamic adjustment and better adaptability. In addition, the spring insert 5 can eject the product to prevent accidental adhesion problems, facilitate material unloading, and the overall structure is simple, with low manufacturing cost, improving processing efficiency and meeting the needs of large-scale product production.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An injection mold for overmolding an aluminum insert, comprising a fixed mold and a movable mold relative to the fixed mold, wherein a fixed mold cavity and a movable mold cavity are respectively provided on opposite sides of the fixed mold and the movable mold, and when the fixed mold and the movable mold are closed, the fixed mold cavity and the movable mold cavity form a mold cavity, and the aluminum insert is placed in the mold cavity, characterized in that, It also includes a cavity insert and a spring ejector insert. The fixed mold has a main insert hole that connects to the bottom of the fixed mold cavity. The cavity insert is slidably disposed in the main insert hole. At the same time, a secondary insert hole arranged in the same direction as the main insert hole is formed on the cavity insert. The spring ejector insert is slidably disposed in the secondary insert hole. Furthermore, anti-detachment limiting structures are provided between the cavity insert and the main insert hole, and between the spring ejector insert and the secondary insert hole. Additionally, an ejection spring is provided between the end of the spring ejector insert facing away from the fixed mold cavity and the fixed mold.

2. The aluminum insert overmolding injection mold according to claim 1, characterized in that, The joint between one end of the cavity insert located within the fixed mold cavity and the other end of the spring insert located within the fixed mold cavity is within the groove range of the aluminum insert.

3. The aluminum insert overmolding injection mold according to claim 1, characterized in that, The anti-detachment limiting structure includes a limiting notch and a limiting protrusion. A limiting notch is provided on the inner wall of both the main insert and the secondary insert, at the end opposite to the fixed mold cavity. The limiting notch on the main insert communicates with the main insert, and the limiting notch on the secondary insert communicates with the secondary insert. Laterally protruding limiting protrusions are provided on the outer walls of both the cavity insert and the ejector insert, at the end opposite to the fixed mold cavity. The limiting protrusion of the cavity insert is slidably disposed within the limiting notch of the main insert, and the limiting protrusion of the ejector insert is slidably disposed within the limiting notch of the secondary insert.

4. The aluminum insert overmolding injection mold according to claim 1, characterized in that, The ejector insert has a mounting hole at the center of the end opposite to the fixed mold cavity, and one end of the ejector spring is inserted into the mounting hole and abuts against the bottom of the mounting hole.

5. The aluminum insert overmolding injection mold according to claim 1, characterized in that, It also includes a positioning insert, one end of which is fixed to the moving mold and the other end extends into the moving mold cavity, and the sleeve hole of the aluminum insert is fitted outside the positioning insert.

6. The aluminum insert overmolding injection mold according to claim 5, characterized in that, The end of the spring insert opposite to the ejector spring has a mating hole, and when the mold is closed, one end of the positioning insert is inserted into the mating hole.

7. The aluminum insert overmolding injection mold according to claim 6, characterized in that, The edge of the end face of the positioning insert extending into the moving mold cavity is provided with a guide slope.

8. The aluminum insert overmolding injection mold according to any one of claims 5-7, characterized in that, It also includes an ejector assembly disposed on the moving mold. The ejector assembly includes an ejector rod and an ejector block. A sliding hole communicating with the moving mold cavity is provided on the moving mold along its moving direction. The ejector block is slidably disposed in the sliding hole. At the same time, a telescopic hole extending in the same direction is provided on the side of the sliding hole away from the moving mold cavity. The ejector rod is slidably disposed in the telescopic hole, and one end of the ejector rod is connected to the ejector block. The end face of the ejector block away from the ejector rod coincides with the most protruding surface of the aluminum insert on the bottom side of the moving mold cavity.

9. The aluminum insert overmolding injection mold according to claim 8, characterized in that, The top block has a clearance hole, and the positioning insert is slidably disposed in the clearance hole.

10. The aluminum insert overmolding injection mold according to claim 1, characterized in that, The opening edge of the fixed mold cavity is arranged with a chamfer to form a fixed mold chamfer surface. A runner is provided on the fixed mold. One end of the runner is connected to the fixed mold cavity and forms a gate. The gate overlaps the fixed mold chamfer surface and is located within the range of the fixed mold chamfer surface.

Images