Electric motorcycle front storage box mold irregular angled ejector mechanism

By designing an irregularly shaped inclined ejector demolding mechanism for the front storage box mold of an electric motorcycle, and utilizing the forming contact block and undercut connection part of the inclined ejector demolding component, the influence of the inward folding opening at the front end of the outer contour during the demolding process of the front storage box is solved, thus ensuring smooth demolding and product integrity.

CN224426361UActive Publication Date: 2026-06-30ZHEJIANG 234 MOLDING CO LTD
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Patent Information

Application Number
CN202521585707.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-28
Publication Date
2026-06-30
Estimated Expiration
2035-07-28

AI Technical Summary

Technical Problem

In the existing technology, the inner fold opening at the front end of the outer contour of the front storage box is easily affected during the demolding process, leading to instability in the mold opening process and affecting the integrity of the product.

Method used

An irregularly shaped inclined ejector demolding mechanism for the front storage box mold of an electric motorcycle is adopted, including a mold base plate and an inclined ejector demolding assembly. The inclined ejector demolding assembly consists of multiple inclined ejector seats and inclined ejector rods. The inclined ejector rods are equipped with forming contact blocks and undercut connecting parts. The inclined ejector rods move along the inclined direction under the action of the guide blocks to complete the side core pulling and ejection actions, reducing the number of mold components and optimizing the demolding process.

Benefits of technology

It effectively protects the inner opening at the front of the outer contour of the front storage box, ensuring a smooth mold opening process, reducing wear, and improving product integrity and demolding efficiency.

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Abstract

This utility model provides an irregularly shaped inclined ejector demolding mechanism for a front storage box mold of an electric motorcycle, including a mold base plate and a front storage box component. An inclined ejector demolding assembly is provided between the mold base plate and the front storage box component. The inclined ejector demolding assembly includes two first inclined ejector seats, two second inclined ejector seats, two first inclined ejector rods, and two second inclined ejector rods. The two first inclined ejector seats and the two second inclined ejector seats are all installed on one side of the top of the mold base plate. The two first inclined ejector rods and the two second inclined ejector rods are respectively installed on the inner sides of the two first inclined ejector seats and the two second inclined ejector seats. This utility model can make contact with the inwardly folded opening at the front end of the outer contour of the front storage box, which can protect the operation during the mold opening process, reduce the impact of the mold opening process on this part, make the mold opening operation smooth, and ensure the integrity of the front storage box.
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Description

Technical Field

[0001] This utility model belongs to the technical field of demolding mechanisms, and relates to a special-shaped inclined top demolding mechanism for the front storage box mold of an electric motorcycle. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product. For some irregularly shaped injection molded parts, such as front storage boxes, ejector pins are used for straight ejection or angled ejection.

[0003] For example, a slanted ejection demolding mechanism disclosed in patent number CN201920090675.8 includes a mounting plate, a support plate, a mold core plate, a top plate, a lifting cylinder, and ejector pins. The mounting plate and the mold core plate are arranged parallel to each other at intervals. An injection cavity is provided on the mold core plate. The support plate is installed between the mounting plate and the mold core plate. A pad is installed on the mounting plate. The lower end of the pad is fixed to the mounting plate, and the upper surface of the pad is a horizontally inclined slope. The top plate is installed on the pad. A guide post is connected between the pad and the mold core plate. A lifting cylinder is installed on the mold core plate. The lifting cylinder is connected to the top plate and drives the top plate to move along the guide post. Multiple ejector pins perpendicular to the top plate are installed on the top plate. This solution is suitable for slanted ejection of irregularly shaped injection molded parts, facilitating smooth demolding of irregularly shaped injection molded parts, improving demolding efficiency, avoiding ejection damage to irregularly shaped injection molded parts, and ensuring product quality.

[0004] However, when demolding the front storage box, the large outer contour of the front storage box, along with the inward folding opening at the front end, can easily affect the integrity of the front storage box during demolding. Therefore, we designed an irregularly shaped inclined ejector demolding mechanism for the front storage box mold of electric motorcycles. Summary of the Invention

[0005] The purpose of this utility model is to provide an irregularly shaped inclined ejector mechanism for the front storage box mold of an electric motorcycle, so as to solve the problems mentioned in the background art.

[0006] The purpose of this utility model can be achieved through the following technical solution: an irregularly shaped inclined ejector demolding mechanism for the front storage box mold of an electric motorcycle, including a mold base plate and a front storage box component, wherein an inclined ejector demolding component is provided between the mold base plate and the front storage box component;

[0007] The inclined ejector assembly includes two first inclined ejector seats, two second inclined ejector seats, two first inclined ejector rods and two second inclined ejector rods, with the two first inclined ejector rods located between the two second inclined ejector rods; the two first inclined ejector seats and the two second inclined ejector seats are all installed on one side of the top of the mold base plate, and the two first inclined ejector rods and the two second inclined ejector rods are respectively installed on the inner side of the two first inclined ejector seats and the two second inclined ejector seats;

[0008] Each of the two inclined top rods has a shaped contact block at one end, a shaped surface at one end of each shaped contact block, an undercut connection at the top of each shaped contact block, and an undercut component at the top of each undercut connection.

[0009] In the aforementioned irregular angled ejector demolding mechanism for the front storage box mold of an electric motorcycle, two third angled ejector seats are installed on the other side of the top of the mold base plate. An angled ejector sliding block is slidably disposed inside each of the two third angled ejector seats, and a circular angled ejector rod is installed at one end of each of the two angled ejector sliding blocks. A front storage box forming seat is installed at one end of each of the two circular angled ejector rods, and a core insert is provided at the end of each of the two front storage box forming seats. This design aims to solve the demolding problem of lateral undercuts or side holes in the front storage box, allowing for more complex designs of the front storage box while also providing lateral core pulling and ejection functions. During mold opening, the angled ejector rods move along the inclined direction under the action of the guide block, simultaneously completing the lateral core pulling to resolve undercuts and ejection actions, reducing the number of mold components and optimizing the demolding process.

[0010] In the aforementioned irregularly shaped inclined ejector demolding mechanism for the front storage box mold of an electric motorcycle, multiple fourth inclined ejector seats are provided at the center of the top of the mold base plate. Each fourth inclined ejector seat has a ejector rod installed at one end, and each ejector rod makes inverted contact with the bottom end of the front storage box component. This design aims to further ensure the convenience and stability of demolding the front storage box and reduce surface wear during the demolding process.

[0011] In the aforementioned irregularly shaped inclined ejector demolding mechanism for the front storage box mold of an electric motorcycle, one end of each of the two inclined ejector rods is provided with an arc-shaped contact surface, and one side of each arc-shaped contact surface is provided with an undercut connecting block. The purpose of this arrangement is to better contact the edge of the inner folded opening at the front end of the outer contour of the front storage box, achieving a perfect fit with the edge and ensuring the flatness and smoothness of the edge.

[0012] Compared with the prior art, the advantages of the irregular inclined ejector demolding mechanism of the electric motorcycle front storage box mold of this utility model are as follows: by setting the inclined ejector demolding assembly including two first inclined ejector seats, two second inclined ejector seats, two inclined ejector rods one and two inclined ejector rods two, one end of each inclined ejector rod two is provided with a forming contact block, one end of each forming contact block is provided with a forming surface, the top of each forming contact block is provided with an undercut connection part, and the top of each undercut connection part is provided with an undercut component, which can make contact with the front inward folded opening of the outer contour of the front storage box, and can protect the operation during the mold opening process, reduce the impact of the mold opening process on this part, make the mold opening operation smooth, and ensure the integrity of the front storage box. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the irregular inclined ejection mechanism of the front storage box mold for electric motorcycles according to this utility model.

[0014] Figure 2 This is a three-dimensional structural diagram of the inclined top rod body one and inclined top rod body two of the irregular inclined top demolding mechanism for the front storage box mold of the electric motorcycle of this utility model.

[0015] Figure 3 This is a schematic diagram of the planar structure of the inclined ejector rod body one and the inclined ejector rod body two of the irregular inclined ejector ejector mechanism for the front storage box mold of the electric motorcycle of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the circular inclined ejector rod of the irregular inclined ejector mechanism for the front storage box mold of the electric motorcycle of this utility model.

[0017] Figure 5 This utility model relates to an irregularly shaped inclined ejection mechanism for the front storage box mold of an electric motorcycle. Figure 1 A schematic diagram of the front structure.

[0018] Figure 6 This utility model relates to an irregularly shaped inclined ejection mechanism for the front storage box mold of an electric motorcycle. Figure 1 A schematic diagram of the side structure.

[0019] In the diagram, 1. Mold base plate; 2. Front storage box component; 3. First inclined ejector seat; 4. Second inclined ejector seat; 5. First inclined ejector rod; 6. Second inclined ejector rod; 7. Third inclined ejector seat; 8. Circular inclined ejector rod; 9. Fourth inclined ejector seat; 10. Ejector rod part; 11. Forming contact block; 12. Forming surface; 13. Undercut connection part; 14. Undercut component; 15. Arc-shaped contact surface; 16. Undercut connection block; 17. Inclined ejector sliding block; 18. Front storage box forming seat; 19. Core insert. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this utility model relates to an irregularly shaped inclined ejection mechanism for the front storage box mold of an electric motorcycle.

[0022] Example 1: The irregular angled ejector demolding mechanism includes a mold base plate 1 and a front storage box 2, and an angled ejector assembly is provided between the mold base plate 1 and the front storage box 2;

[0023] like Figure 2 and Figure 3 As shown, the inclined ejector assembly includes two first inclined ejector seats 3, two second inclined ejector seats 4, two first inclined ejector rods 5 and two second inclined ejector rods 6, with the first two inclined ejector rods 5 located between the second two inclined ejector rods 6; the two first inclined ejector seats 3 and the two second inclined ejector seats 4 are all installed on one side of the top of the mold base plate 1, and the first two inclined ejector rods 5 and the second two inclined ejector rods 6 are respectively installed on the inner sides of the two first inclined ejector seats 3 and the two second inclined ejector seats 4;

[0024] Each of the two inclined rod bodies 6 has a forming contact block 11 at one end, a forming surface 12 at one end of each forming contact block 11, an undercut connection part 13 at the top of each forming contact block 11, and an undercut part 14 at the top of each undercut connection part 13.

[0025] This solution can make contact with the inwardly folded opening at the front of the outer contour of the front storage box, which can protect the operation during the mold opening process, reduce the impact of the mold opening process on this part, make the mold opening operation smooth, and ensure the integrity of the front storage box.

[0026] Furthermore, based on Embodiment 1, in order to better fit the edge of the inner folded opening at the front end of the outer contour and ensure the flatness and smoothness of the edge, one end of each of the two inclined top rods 5 is provided with an arc-shaped contact surface 15, and one side of each arc-shaped contact surface 15 is provided with an undercut connecting block 16.

[0027] Example 2: Based on the example, the same structure will not be described again, such as... Figure 1 and Figure 4As shown, two third inclined ejector seats 7 are installed on the other side of the top of the mold base plate 1. An inclined ejector sliding block 17 is slidably arranged inside the two third inclined ejector seats 7. A circular inclined ejector rod 8 is installed at one end of each of the two inclined ejector sliding blocks 17. A front box forming seat 18 is installed at one end of each of the two circular inclined ejector rods 8. A core insert 19 is provided at the end of each of the two front box forming seats 18.

[0028] This solution addresses the demolding issues of side buckles or side holes in front storage boxes, enabling more complex designs for these products while also providing side core pulling and ejection functions. During mold opening, the angled ejector rod moves along the inclined direction under the action of the guide block, simultaneously completing the side core pulling to resolve buckles and ejection actions, reducing the number of mold components and optimizing the demolding process.

[0029] Furthermore, in order to increase the complexity of the front storage box outline, multiple fourth inclined top seats 9 are provided in the middle of the top of the mold base plate 1. Each fourth inclined top seat 9 has a top rod 10 installed at one end, and each top rod 10 is in contact with the bottom of the front storage box 2 undercut.

[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A special-shaped inclined ejection mechanism of a front storage box mold for an electric motorcycle, comprising a mold bottom plate (1) and a front storage box part (2), characterized in that, An inclined ejector assembly is provided between the mold base plate (1) and the front storage box (2); the inclined ejector assembly includes two first inclined ejector seats (3), two second inclined ejector seats (4), two inclined ejector rods (5) and two inclined ejector rods (6). The two first inclined ejector seats (3) and the two second inclined ejector seats (4) are installed on one side of the top of the mold base plate (1). The two inclined ejector rods (5) and the two inclined ejector rods (6) are installed on the inner side of the two first inclined ejector seats (3) and the two second inclined ejector seats (4), respectively. One end of the two inclined ejector rods (6) is provided with a forming contact block (11). One end of each forming contact block (11) is provided with a forming surface (12). The top of each forming contact block (11) is provided with an undercut connection part (13). The top of each undercut connection part (13) is provided with an undercut part (14).

2. The irregularly shaped inclined ejector mechanism for the front storage box mold of an electric motorcycle according to claim 1, characterized in that, Two third inclined top seats (7) are installed on the other side of the top of the mold base plate (1). An inclined top sliding block (17) is slidably arranged inside the two third inclined top seats (7). A circular inclined top rod (8) is installed at one end of each of the two inclined top sliding blocks (17).

3. The irregular angled ejector mechanism for the front storage box mold of an electric motorcycle according to claim 2, characterized in that, One end of each of the two circular inclined top rods (8) is equipped with a front storage box forming seat (18), and the ends of the two front storage box forming seats (18) are each provided with a core insert (19).

4. The irregularly shaped inclined ejector mechanism for the front storage box mold of an electric motorcycle according to claim 1, characterized in that, The mold base plate (1) has a plurality of fourth inclined top seats (9) at the middle of the top. Each of the fourth inclined top seats (9) has a top rod (10) installed at one end. Each top rod (10) is in contact with the bottom of the front box (2) by inverted molding.

5. The irregular angled ejector mechanism for the front storage box mold of an electric motorcycle according to claim 1, characterized in that, One end of each of the two inclined rods (5) is provided with an arc-shaped contact surface (15), and one side of each arc-shaped contact surface (15) is provided with an undercut connecting block (16).

6. The irregular angled ejector mechanism for the front storage box mold of an electric motorcycle according to claim 1, characterized in that, The two inclined rods one (5) are located between the two inclined rods two (6).

Citation Information

Patent Citations

  • Inclined ejection demoulding mechanism

    CN209666168U