Bulletproof helmet plastic edge covering injection molding mold
By employing precise matching between inserts and recesses and anti-loosening abutment in the injection molding mold for plastic edge binding of bulletproof helmets, the problems of insert position displacement and uneven injection flow channels inside the mold were solved, achieving high-precision and high-quality edge binding molding and improving the production efficiency and quality of bulletproof helmets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 台州市黄岩天勤模塑有限公司
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional injection molding dies for plastic edging of bulletproof helmets suffer from problems such as misalignment of internal inserts, unreasonable injection runner design, and difficulty in meeting the production requirements of high-precision, high-quality plastic edging, resulting in high defect rates and low production efficiency.
The precise fit between the edge-sealing insert and the molding recess, the stable engagement of the insert anti-loosening abutment, and the uniform delivery design of the injection molding diverter ensure the stability and precision of the edge-sealing process.
This improved the fit between the edging and the helmet body, reduced the defect rate, and increased production efficiency and product quality.
Smart Images
Figure CN224197189U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mold technology and relates to an injection molding mold for plastic edging of bulletproof helmets. Background Technology
[0002] In the manufacturing process of bulletproof helmets, the injection molding of plastic edging is a crucial step in ensuring the helmet's protective performance and appearance quality. Currently, traditional injection molding molds for bulletproof helmet plastic edging generally suffer from several technical defects. First, the inserts used to form the edging structure inside the mold lack effective fixing measures during injection molding, making them prone to displacement or movement under the impact of high-temperature, high-pressure molten plastic. This results in insufficient dimensional accuracy of the final edging, poor fit with the helmet body, and even affects the overall protective performance of the helmet. Second, unreasonable injection runner design prevents the molten plastic from evenly filling the mold cavity, causing uneven thickness in different parts of the edging, increasing the defect rate and reducing production efficiency. Furthermore, traditional molds fail to fully consider key factors in the edging molding process in their structural design, making it difficult to meet the stringent production requirements of modern bulletproof helmets for high-precision, high-quality plastic edging. Therefore, there is an urgent need for an injection molding mold for bulletproof helmet plastic edging that can solve the above problems. Summary of the Invention
[0003] The purpose of this invention is to address the above-mentioned problems by providing a plastic edging injection molding mold for bulletproof helmets.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A plastic edging injection molding mold for bulletproof helmets includes a lower mold and an upper mold. The lower mold contains an edging insert, and the upper mold contains an edging recess. The edging insert and the recess are positioned and shaped accordingly. An injection manifold is positioned above the upper mold, corresponding to the recess. An insert anti-loosening abutment extends into the edging insert and abuts against it.
[0006] In the aforementioned injection molding mold for plastic edging of bulletproof helmets, the edging molding insert includes a helmet-shaped insert disposed in the lower mold of the helmet plastic edging molding. The top of the helmet-shaped insert is provided with a lower edging molding surface, and the lower edging molding surface is directly opposite the edging molding recess.
[0007] In the aforementioned injection molding mold for the plastic edging of bulletproof helmets, a cavity for insert placement is provided in the lower mold of the helmet plastic edging molding, and the shape of the cavity for insert placement is adapted to the shape of the helmet-shaped insert.
[0008] In the aforementioned injection molding mold for plastic edging of bulletproof helmets, the insert is placed in a cavity with an insert support portion, which abuts against the helmet-shaped insert.
[0009] In the aforementioned injection molding mold for plastic edging of bulletproof helmets, the insert support portion includes a support edge wall disposed within the insert placement cavity, the support edge wall abutting against the helmet-shaped insert.
[0010] In the aforementioned injection molding mold for plastic edging of bulletproof helmets, the edging forming recess includes an upper edging forming surface disposed within the upper mold for plastic edging of helmets. The upper edging forming surface and the lower edging forming surface are positioned correspondingly and matched in shape.
[0011] In the aforementioned injection molding mold for plastic edging of bulletproof helmets, the insert anti-loosening abutment includes an insert abutment inner post disposed in the upper mold for molding the plastic edging of helmets. The helmet-shaped insert has a concave cavity, and the bottom of the insert abutment inner post abuts against the inner wall of the concave cavity.
[0012] In the aforementioned injection molding mold for the plastic edging of bulletproof helmets, the insert abutting inner post is connected to the upper mold for forming the plastic edging of the helmet by bolts.
[0013] In the aforementioned injection molding mold for the plastic edging of a bulletproof helmet, the injection diversion component includes an injection main board disposed above the upper mold for forming the plastic edging of the helmet, and the injection main board is provided with an injection main pipe.
[0014] In the aforementioned injection molding mold for the plastic edging of a bulletproof helmet, an injection tube positioning plate is provided between the main injection molding plate and the upper mold for forming the plastic edging of the helmet. The main injection tube passes through the injection tube positioning plate and is engaged with the injection tube positioning plate.
[0015] Compared with existing technologies, the advantages of this utility model are:
[0016] This invention, through the precise matching of the edge-forming insert and the edge-forming recess, can strictly control the shape and size of the plastic edge of the bulletproof helmet, ensuring a perfect fit between the edge and the helmet body. This effectively improves the helmet's protective performance and appearance quality. Furthermore, the insert anti-loosening abutment provides stable support to the edge-forming insert during injection molding, eliminating the risk of insert wobbling and ensuring the stability and consistency of the edge forming process. This significantly reduces the defect rate and improves production efficiency.
[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a partial structural schematic diagram of the present invention.
[0020] Figure 3 This is a partial structural schematic diagram of another aspect of this utility model.
[0021] Figure 4 This is a schematic diagram of the lower mold for forming the plastic edging of a helmet.
[0022] Figure 5 This is a schematic diagram of the upper mold for forming the plastic edging of a helmet.
[0023] In the diagram: 1. Lower mold for helmet plastic edging; 2. Upper mold for helmet plastic edging; 3. Edging insert; 4. Edging recess; 5. Injection flow divider; 6. Insert anti-loosening abutment; 7. Helmet-shaped insert; 8. Lower edging molding surface; 9. Insert placement cavity; 10. Insert support; 11. Support along the wall; 12. Upper edging molding surface; 13. Insert abutment inner post; 14. Cavity; 15. Bolt; 16. Injection main board; 17. Injection main pipe; 18. Injection pipe positioning plate. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings.
[0025] like Figure 1-5 As shown, a bulletproof helmet plastic edging injection molding mold includes a lower mold 1 and an upper mold 2 for forming the helmet plastic edging. The lower mold 1 has an edging insert 3, and the upper mold 2 has an edging recess 4. The edging insert 3 and the edging recess 4 are positioned and matched in shape. An injection flow divider 5 is provided above the upper mold 2, and the injection flow divider 5 is positioned and matched in shape with the edging recess 4. The upper mold 2 has an insert anti-loosening abutment 6 extending into the edging insert 3, and the insert anti-loosening abutment 6 abuts against the edging insert 3.
[0026] In this embodiment, when the mold is closed, the edge-binding insert 3 and the edge-binding recess 4 fit tightly together to form the edge-binding forming space; the injection molding distributor 5 delivers the molten plastic to the edge-binding recess 4, allowing the molten material to fill the forming cavity; the insert anti-loosening abutment 6 abuts and fixes the edge-binding insert 3 from above, ensuring that the edge-binding insert 3 remains stable under injection pressure. Through the cooperation between the edge-binding insert 3 and the edge-binding recess 4, the shape and size of the edge can be precisely controlled, ensuring the fit between the edge and the helmet body; the injection molding distributor 5 achieves uniform distribution of molten material, improving the forming quality of the edge; the setting of the insert anti-loosening abutment 6 effectively solves the problem of the insert shaking during the injection process, improving the precision and stability of the edge-binding forming, thereby improving the product qualification rate and production efficiency.
[0027] Combination Figure 1-5 As shown, the edge-wrapping molding insert 3 includes a helmet-shaped insert 7 disposed in the lower mold 1 for molding the plastic edge of the helmet. The top of the helmet-shaped insert 7 is provided with an edge-wrapping lower molding surface 8, and the edge-wrapping lower molding surface 8 is disposed opposite to the edge-wrapping molding recess 4.
[0028] Specifically, during the mold closing process, the lower forming surface 8 of the edge trim and the corresponding forming surface in the edge trim forming recess 4 cooperate to jointly determine the shape and size of the plastic edge trim. The two fit tightly together to form a complete edge trim forming space, allowing the injected molten plastic to be formed into an edge trim structure that meets the design requirements. The design of the helmet-shaped insert 7 can accurately fit the shape of the bulletproof helmet, ensuring the fit between the edge trim and the helmet body. The cooperation between the lower forming surface 8 of the edge trim and the edge trim forming recess 4 ensures the accuracy of the edge trim shape and size, improving the quality and consistency of the product.
[0029] Combination Figure 3 , Figure 4 As shown, the lower mold 1 for forming the plastic edging of the helmet has an insert placement cavity 9, which is adapted to the shape of the helmet-shaped insert 7.
[0030] In this embodiment, when the helmet-shaped insert 7 is installed in the insert placement cavity 9, the close fit between the two can effectively restrict the movement of the helmet-shaped insert 7 in the horizontal direction, so that it maintains a stable position in the mold and provides a reliable foundation for the subsequent injection molding process.
[0031] The insert placement cavity 9 has an insert support portion 10, which abuts against the helmet-shaped insert 7.
[0032] In this embodiment, the insert support 10 and the helmet-shaped insert 7 abut against each other to ensure that the helmet-shaped insert 7 remains stable in the vertical direction, maintains its correct installation height in the mold, and thus ensures the dimensional accuracy of the edge forming.
[0033] Combination Figure 4 As shown, the insert support portion 10 includes a support side wall 11 disposed in the insert placement cavity 9, and the support side wall 11 abuts against the helmet-shaped insert 7.
[0034] In this embodiment, during the injection molding process, the supporting wall 11 can effectively disperse the pressure on the helmet-shaped insert 7, preventing it from tilting or shifting, and ensuring that the helmet-shaped insert 7 remains stable in the mold, thereby ensuring the accuracy and quality of the edge-binding. The surrounding design of the supporting wall 11 enhances the support effect on the helmet-shaped insert 7, improves the stability of the helmet-shaped insert 7 in the mold, effectively avoids edge-binding defects caused by uneven support, and improves the product qualification rate.
[0035] The edge-wrapping forming recess 4 includes an upper edge-wrapping forming surface 12 disposed in the upper mold 2 for forming the plastic edge of the helmet. The upper edge-wrapping forming surface 12 and the lower edge-wrapping forming surface 8 are positioned correspondingly and matched in shape.
[0036] In this embodiment, under injection pressure, the molten plastic fills the molding cavity formed by the upper molding surface 12 and the lower molding surface 8 of the edging. After cooling and solidification, a plastic edging for a bulletproof helmet that meets design requirements is formed. The precise shape fit and positional correspondence between the two ensure the dimensional accuracy of the edging molding cavity, thereby guaranteeing that the shape and size of the edging meet the standards.
[0037] The insert anti-loosening abutment 6 includes an insert abutment inner post 13 disposed in the upper mold 2 for forming the plastic edge of the helmet. The helmet-shaped insert 7 has a concave cavity 14, and the bottom of the insert abutment inner post 13 abuts against the inner wall of the concave cavity 14.
[0038] In this embodiment, the helmet-shaped insert 7 is limited from multiple directions by the contact between the insert and the inner post 13 and the inner wall of the cavity 14. This effectively prevents the helmet-shaped insert 7 from shaking or shifting due to the pressure of the molten plastic during injection molding, ensuring that the helmet-shaped insert 7 maintains a stable position in the mold, thereby guaranteeing the accuracy of the edge-wrapping process. The cooperation between the insert and the inner post 13 and the cavity 14 achieves a stable fixation of the helmet-shaped insert 7, solving the problem of the insert shaking during injection molding, improving the stability and accuracy of the edge-wrapping process, reducing the defect rate, and improving product quality.
[0039] Combination Figure 3 As shown, the insert abutting inner post 13 is connected to the upper mold 2 for forming the plastic edge of the helmet by bolts 15.
[0040] In this embodiment, the insert abutting inner post 13 is connected to the helmet plastic edge forming upper mold 2 by bolts 15. This connection method makes the installation and removal of the insert abutting inner post 13 simple and easy. During the mold assembly process, the insert abutting inner post 13 can be easily installed into the helmet plastic edge forming upper mold 2 and fixed by tightening the bolts 15; it can also be easily disassembled when the mold is maintained or the insert abutting inner post 13 is replaced.
[0041] Combination Figure 1 As shown, the injection molding diversion component 5 includes an injection molding main plate 16 disposed above the upper mold 2 for forming the plastic edge of the helmet, and an injection molding main pipe 17 is provided inside the injection molding main plate 16.
[0042] In this embodiment, during the injection molding process, the molten plastic material enters the mold through the injection main tube 17. The injection main plate 16 ensures the stability of the position of the injection main tube 17, so that the molten material can flow accurately into the edge forming recess 4 along the predetermined path, avoiding the displacement or leakage of the molten material during the flow process, and ensuring that the molten material can uniformly fill the edge forming cavity.
[0043] Combination Figure 1-2 As shown, an injection tube positioning plate 18 is provided between the injection molding main board 16 and the upper mold 2 for forming the plastic edge of the helmet. The injection molding main pipe 17 passes through the injection tube positioning plate 18 and is engaged with the injection tube positioning plate 18.
[0044] In this embodiment, the injection tube positioning plate 18 further precisely defines the position of the injection tube 17, and firmly fixes the injection tube 17 in the predetermined position by snap-fitting. The snap-fitting cooperation between the injection tube positioning plate 18 and the injection tube 17 enhances the installation stability of the injection tube 17, ensures the accuracy and uniformity of the molten material delivery, improves the precision and quality of edge-wrapping molding, and reduces product defects caused by uneven molten material distribution.
[0045] The working principle of this utility model is as follows:
[0046] Before injection molding the plastic edging of the bulletproof helmet, the helmet-shaped insert 7 is first placed in the insert placement cavity 9 of the lower mold 1 for molding the helmet plastic edging. Since the shape of the insert placement cavity 9 matches that of the helmet-shaped insert 7, the helmet-shaped insert 7 can be accurately embedded in it. At the same time, the support wall 11 in the insert placement cavity 9 abuts and supports the bottom edge of the helmet-shaped insert 7, ensuring that the helmet-shaped insert 7 maintains a stable position in both the vertical and horizontal directions.
[0047] Subsequently, the upper mold 2 and lower mold 1 of the helmet plastic edge forming are closed. During the mold closing process, the lower forming surface 8 of the edge forming insert 3 and the upper forming surface 12 of the edge forming recess 4 gradually approach and fit tightly together, forming a complete plastic edge forming cavity for the bulletproof helmet. At the same time, as the upper mold 2 descends, the insert abutting inner post 13 extends into the recess 14 of the helmet-shaped insert 7. The bottom of the insert abutting inner post 13 abuts against the inner wall of the recess 14, providing multi-directional restraint for the helmet-shaped insert 7 and preventing it from shaking or shifting during injection molding.
[0048] After mold closing, molten plastic enters the injection main pipe 17 from the outside. The injection main pipe 17 passes through the injection main plate 16 and the injection tube positioning plate 18. Under the fixing and guiding action of the injection main plate 16 and the injection tube positioning plate 18, the molten plastic flows accurately into the edge-sealing molding recess 4 along the injection main pipe 17. Due to the reasonable design of the injection diversion component 5, the molten plastic can evenly fill the entire edge-sealing molding cavity.
[0049] Under the action of injection pressure, the molten plastic fills the edge forming cavity and fully contacts the forming surfaces of the edge forming insert 3 and the edge forming recess 4. After a period of cooling and solidification, the molten plastic gradually forms the plastic edge of the bulletproof helmet. During the injection process, the insert abuts against the inner post 13 and always firmly abuts against the helmet-shaped insert 7, ensuring the stability of the position of the helmet-shaped insert 7, thereby ensuring the accuracy and quality of the edge forming. Finally, after cooling and solidification, the mold is opened and the formed bulletproof helmet is taken out of the mold, thus completing a complete injection molding process for the plastic edge of the bulletproof helmet.
[0050] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.
[0051] Although this document frequently uses terms such as helmet plastic edging molding lower mold 1, helmet plastic edging molding upper mold 2, edging molding insert 3, edging molding recess 4, injection molding flow divider 5, insert anti-loosening abutment 6, helmet-shaped insert 7, lower edging molding surface 8, insert placement cavity 9, insert support 10, support along the wall 11, upper edging molding surface 12, insert abutment inner post 13, recessed chamber 14, bolt 15, injection molding main plate 16, injection molding main pipe 17, injection molding pipe positioning plate 18, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.
Claims
1. A bulletproof helmet plastic edging injection molding mold, comprising a lower mold (1) for forming the helmet plastic edging and an upper mold (2) for forming the helmet plastic edging, characterized in that, The lower mold (1) for forming the plastic edge of the helmet is provided with an edge forming insert (3), and the upper mold (2) for forming the plastic edge of the helmet is provided with an edge forming recess (4). The edge forming insert (3) and the edge forming recess (4) are positioned and matched in shape. An injection molding diverter (5) is provided above the upper mold (2) for forming the plastic edge of the helmet. The injection molding diverter (5) and the edge forming recess (4) are positioned. An insert anti-loosening abutment (6) is provided in the upper mold (2) for forming the plastic edge of the helmet, extending into the edge forming insert (3). The insert anti-loosening abutment (6) abuts against the edge forming insert (3).
2. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 1, characterized in that, The edge-wrapping molding insert (3) includes a helmet-shaped insert (7) disposed in the lower mold (1) for molding the plastic edge of the helmet. The top of the helmet-shaped insert (7) is provided with an edge-wrapping lower molding surface (8), which is directly opposite to the edge-wrapping molding recess (4).
3. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 2, characterized in that, The lower mold (1) for forming the plastic edge of the helmet has an insert placement cavity (9) that matches the shape of the helmet-shaped insert (7).
4. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 3, characterized in that, The insert placement cavity (9) has an insert support part (10) that abuts against the helmet-shaped insert (7).
5. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 4, characterized in that, The insert support portion (10) includes a support side wall (11) disposed in the insert placement cavity (9), the support side wall (11) abutting against the helmet-shaped insert (7).
6. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 2, characterized in that, The edge-forming recess (4) includes an upper edge-forming surface (12) disposed in the upper mold (2) for forming the plastic edge of the helmet. The upper edge-forming surface (12) and the lower edge-forming surface (8) are positioned correspondingly and have matching shapes.
7. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 2, characterized in that, The insert anti-loosening abutment (6) includes an insert abutment inner post (13) disposed in the upper mold (2) for forming the plastic edge of the helmet. The helmet-shaped insert (7) has a concave cavity (14). The bottom of the insert abutment inner post (13) abuts against the inner wall of the concave cavity (14).
8. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 7, characterized in that, The insert abutting inner post (13) is connected to the upper mold (2) for forming the plastic edge of the helmet by bolts (15).
9. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 1, characterized in that, The injection molding diversion component (5) includes an injection molding main plate (16) disposed above the upper mold (2) for molding the plastic edge of the helmet, and the injection molding main plate (16) is provided with an injection molding main pipe (17).
10. The injection molding mold for the plastic edging of a bulletproof helmet according to claim 9, characterized in that, An injection molding tube positioning plate (18) is provided between the injection molding main board (16) and the upper mold (2) for forming the plastic edge of the helmet. The injection molding main tube (17) passes through the injection molding tube positioning plate (18) and is engaged with the injection molding tube positioning plate (18).