Bulletproof helmet non-cutting stretching die

Abstract

The utility model belongs to the technical field of dies, and relates to a non-cutting stretching die for a bulletproof helmet. The device comprises a helmet forming lower die and a helmet forming upper die, a lifting part is arranged above the helmet forming upper die, a helmet ear body one-time forming insert is arranged in the helmet forming lower die, a helmet forming concave part and a helmet inner positioning part forming part are arranged in the helmet forming upper die, and the helmet ear body one-time forming insert is arranged in the helmet forming lower die. The helmet ear body one-time forming insert corresponds to the helmet forming concave part in position and is matched with the helmet forming concave part in shape, and an upper mold fixing part and a leakage-proof sealing part are arranged between the helmet forming lower mold and the helmet forming upper mold. In the use process, by arranging the helmet ear body one-time forming insert, forming of the helmet body part and the helmet ear part of the helmet can be synchronously completed in the mold forming process, the step-by-step forming and later connecting procedures of the helmet body part and the helmet ear part in the traditional technology are avoided, and the production period is effectively shortened.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a bulletproof helmet stretching mold without cutting. Background Technology

[0002] In the manufacturing process of bulletproof helmets, traditional manufacturing processes typically require step-by-step processing of different parts of the helmet. For example, the helmet body and earpieces are often molded separately and then assembled together through subsequent connection processes; the connecting shafts inside the helmet used to fix the buffer layer are also usually installed after the helmet body is formed. This step-by-step processing and secondary processing method results in cumbersome production processes, increasing production time and keeping production costs high. Furthermore, the connection precision between components is difficult to guarantee during step-by-step processing and secondary processing, which may affect the overall protective performance and wearing comfort of the bulletproof helmet. Therefore, there is an urgent need for a bulletproof helmet no-cutting stretching mold that can achieve simultaneous molding of multiple parts of the helmet and reduce secondary processing, in order to improve production efficiency, reduce costs, and ensure product quality.

[0003] To overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, Chinese patent discloses a helmet mold [application number: 202120807136.9], which includes: a main mold body for assembling the mold; a secondary mold body on one side of the main mold body; a mold cavity opened inside the main mold body near the secondary mold body, with one side of the mold cavity extending into the interior of the secondary mold body; positioning grooves opened on one side of the bottom of both the main mold body and the secondary mold body; snap-fit ​​mechanisms uniformly fixed on the outer wall of the bottom of the main mold body near the secondary mold body; snap-fit ​​grooves on one side of the snap-fit ​​mechanisms inside the secondary mold body; venting grooves on the outer side of the mold cavity inside the main mold body; and connecting grooves inside the main mold body on the side of the main mold body near the snap-fit ​​mechanisms. However, in the helmet molding process of this solution, the earpiece and the connecting shaft used to fix the buffer layer still need secondary processing, resulting in a long production cycle and high cost. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a bulletproof helmet stretching mold without cutting.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bulletproof helmet stretching mold without cutting includes a lower helmet forming mold and an upper helmet forming mold. A lifting and pulling member is provided above the upper helmet forming mold. A helmet earpiece one-time forming insert is provided inside the lower helmet forming mold. A helmet forming recess and an inner positioning part forming member are provided inside the upper helmet forming mold. The position of the helmet earpiece one-time forming insert corresponds to the helmet forming recess and the shape is matched. An upper mold fixing member and a leak-proof sealing part are provided between the lower helmet forming mold and the upper helmet forming mold.

[0007] In the aforementioned bulletproof helmet non-cutting stretching mold, the helmet ear body one-time forming insert includes an insert disposed in the lower helmet forming mold, the top of the insert is provided with a helmet forming protrusion, and the two ends of the helmet forming protrusion are provided with helmet ear forming parts.

[0008] In the aforementioned bulletproof helmet non-cutting stretching mold, the lug forming part includes lug forming protrusions disposed at both ends of the helmet forming protrusion, and the two lug forming protrusions are symmetrically arranged along the center line of the helmet forming protrusion.

[0009] In the aforementioned bulletproof helmet non-cutting stretching mold, the bottom of the insert is provided with a lower mold plate, and the lower mold plate is fixed to the helmet forming lower mold by a number of bolts.

[0010] In the aforementioned bulletproof helmet non-cutting stretching mold, the helmet forming recess includes a forming cavity disposed in the upper helmet forming mold, the forming cavity corresponding to the position of the helmet forming protrusion and matching its shape.

[0011] In the aforementioned bulletproof helmet non-cutting stretching mold, the helmet internal positioning part includes a positioning connecting shaft forming rod disposed in the forming cavity, and the positioning connecting shaft forming rod is disposed opposite to the helmet forming protrusion.

[0012] In the aforementioned bulletproof helmet non-cutting stretching mold, the lifting and pulling component includes a lifting plate disposed above the helmet forming upper mold, and the cross-sectional area of ​​the lifting plate is larger than the cross-sectional area of ​​the helmet forming upper mold.

[0013] In the aforementioned bulletproof helmet non-cutting stretching mold, a connecting plate is provided between the lifting plate and the helmet forming upper mold, and the lifting plate, the helmet forming upper mold, and the connecting plate are fixed together by bolts.

[0014] In the aforementioned bulletproof helmet non-cutting stretching mold, the upper mold fixing component includes an upper mold fixing plate disposed between the lower helmet forming mold and the upper helmet forming mold, and the upper mold fixing plate is fixed to the upper helmet forming mold by bolts.

[0015] In the aforementioned bulletproof helmet uncut stretching mold, the leak-proof sealing part includes a sealing plate disposed between the lower helmet forming mold and the upper helmet forming mold, and the helmet forming protrusion passes through the sealing plate.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. In use, this utility model, by setting a one-time molding insert for the helmet earpiece, can simultaneously complete the molding of the helmet body and the earpiece during the mold forming process, avoiding the step-by-step molding and subsequent connection process of the helmet body and earpiece in the traditional process, and effectively shortening the production cycle.

[0018] 2. The helmet positioning part of this utility model can be formed simultaneously during the mold forming process to form the connecting shaft for fixing the inner buffer layer of the helmet, without the need for subsequent secondary processing. This further simplifies the production process, reduces the error risk that may be caused by secondary processing, and improves the stability of product quality.

[0019] 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

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a partial structural schematic diagram of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of another aspect of this utility model.

[0023] Figure 4 This is a partial structural schematic diagram of another aspect of this utility model.

[0024] In the diagram: 1. Lower helmet forming mold; 2. Upper helmet forming mold; 3. Lifting and pulling component; 4. Helmet earpiece one-time forming insert; 5. Helmet forming recess; 6. Helmet inner positioning part forming component; 7. Upper mold fixing component; 8. Leak-proof sealing part; 9. Helmet forming protrusion; 10. Helmet ear forming part; 11. Helmet ear forming protrusion; 12. Lower mold insert plate; 13. Forming cavity; 14. Positioning connecting shaft forming rod; 15. Lifting plate; 16. Connecting plate; 17. Upper mold fixing plate; 18. Sealing plate; 19. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-4As shown, a bulletproof helmet stretching mold without cutting includes a lower helmet forming mold 1 and an upper helmet forming mold 2. A lifting and pulling member 3 is provided above the upper helmet forming mold 2. A helmet earpiece one-time forming insert 4 is provided inside the lower helmet forming mold 1. A helmet forming recess 5 and an inner positioning part forming member 6 are provided inside the upper helmet forming mold 2. The position of the helmet earpiece one-time forming insert 4 corresponds to the helmet forming recess 5 and the shape is matched. An upper mold fixing member 7 and a leak-proof sealing part 8 are provided between the lower helmet forming mold 1 and the upper helmet forming mold 2.

[0027] In this embodiment, during use, when the upper helmet forming mold 2 and the lower helmet forming mold 1 are closed, the helmet forming recess 5 and the helmet earpiece one-time forming insert 4 cooperate with each other, so that in the one-time forming process, not only can the main body shape of the helmet be formed, but the earpiece can also be formed simultaneously. There is no need to process the earpiece separately and connect it later, which greatly improves production efficiency, ensures the connection accuracy and overall strength between the earpiece and the helmet body, and the leak-proof sealing part 8 can prevent material leakage and has a good sealing effect.

[0028] Combination Figure 1-4 As shown, the helmet ear body one-piece molding insert 4 includes an insert 9 disposed in the helmet molding lower mold 1, the top of the insert 9 is provided with a helmet molding protrusion 10, and the two ends of the helmet molding protrusion 10 are provided with helmet ear molding portions 11.

[0029] Specifically, the one-piece molded insert 4 for the helmet earpiece consists of an insert 9, a helmet-forming protrusion 10, and an earpiece forming part 11. The bottom of the insert 9 is fixedly connected to the lower helmet-forming mold 1 via a lower mold insert plate 13. The helmet-forming protrusion 10 is located at the center of the top of the insert 9, and its outline is consistent with the shape of the bottom of the helmet body. The earpiece forming parts 11 are symmetrically distributed at both ends of the helmet-forming protrusion 10, including earpiece forming protrusions 12. When the mold is closed, the helmet-forming protrusion 10 is embedded into the forming cavity 14 of the upper helmet-forming mold 2. At the same time, the earpiece forming protrusion 12 cooperates with the ear cavities on both sides of the forming cavity 14, so that the material is filled at the same time to form the helmet body and earpiece structure. The design of the one-piece molded insert realizes the synchronous manufacturing of the helmet body and earpiece, avoids the weakness caused by traditional welding or bonding processes, and improves the overall structural strength of the helmet. Moreover, the detachable design of the insert makes it easy to replace molds of different specifications to meet diverse production needs.

[0030] The lug forming part 11 includes lug forming protrusions 12 disposed at both ends of the helmet forming protrusion 10, and the two lug forming protrusions 12 are symmetrically arranged along the center line of the helmet forming protrusion 10.

[0031] In this embodiment, the ear-forming protrusion 12 of the ear-forming part 11 is arc-shaped, and its curvature matches the contour of the human ear. The two ear-forming protrusions 12 are distributed symmetrically about the center line of the helmet-forming protrusion 10. When the mold is closed, the ear-forming protrusions 12 on both sides fit tightly with the corresponding ear grooves in the upper helmet-forming mold 2, ensuring that the ear shape is accurate and the size is uniform after forming. It can also effectively disperse external impact force and improve protective performance. The symmetrical design ensures the consistency of the structure on both sides of the helmet and improves wearing comfort. At the same time, the precise ear shape forming reduces the subsequent grinding and finishing process, further improving production efficiency.

[0032] Combination Figure 1 , Figure 3 As shown, the bottom of the insert 9 is provided with a lower mold insert plate 13, and the lower mold insert plate 13 is fixed to the helmet forming lower mold 1 by a number of bolts.

[0033] In this embodiment, the lower mold plate 13 at the bottom of the insert 9 is a metal plate with multiple threaded holes on its surface. It is fixedly connected to the pre-set threaded holes of the helmet forming lower mold 1 by high-strength bolts. This connection method not only ensures that the insert maintains a stable position during high-pressure forming, but also facilitates quick disassembly and replacement of the insert to meet the production needs of different helmet models.

[0034] The helmet forming recess 5 includes a forming cavity 14 disposed in the upper helmet forming mold 2, the forming cavity 14 being positioned and shaped to correspond with the helmet forming protrusion 10.

[0035] In this embodiment, the molding cavity 14 of the helmet molding recess 5 is an inverted helmet-shaped groove. Its depth and curvature are perfectly matched with the helmet molding protrusion 10 in the lower helmet molding mold 1. When the mold is closed, the molding cavity 14 and the helmet molding protrusion 10 form a closed helmet-shaped cavity. The material fills the cavity under pressure and is finally formed into a complete helmet body.

[0036] Combination Figure 4 As shown, the helmet internal positioning part 6 includes a positioning connecting shaft forming rod 15 disposed in the forming cavity 14, and the positioning connecting shaft forming rod 15 is disposed opposite to the helmet forming protrusion 10.

[0037] In this embodiment, the positioning connecting shaft forming rod 15 of the helmet inner positioning part forming component 6 is vertically arranged at the top center of the forming cavity 14. Its length and diameter are consistent with the designed connecting shaft. During the mold closing and material filling process, the positioning connecting shaft forming rod 15 cooperates with the mold to form a connecting shaft that penetrates the helmet body, which is used for the subsequent installation and fixing of the buffer layer.

[0038] The lifting and pulling component 3 includes a lifting plate 16 disposed above the helmet forming upper mold 2, and the cross-sectional area of ​​the lifting plate 16 is larger than the cross-sectional area of ​​the helmet forming upper mold 2.

[0039] In this embodiment, the lifting plate 16 of the lifting and pulling component 3 is a rectangular metal plate, with a length and width larger than the helmet forming upper mold 2, providing a larger force-bearing area. The lifting plate 16 is connected to the helmet forming upper mold 2 via a connecting plate 17, which is an L-shaped metal bracket. It is fixed to the lifting plate 16 and the upper mold with bolts. External lifting equipment can smoothly drive the upper mold to move up and down by connecting to the lifting plate 16.

[0040] Combination Figure 1-4 As shown, a connecting plate 17 is provided between the lifting plate 16 and the helmet forming upper mold 2, and the lifting plate 16, the helmet forming upper mold 2 and the connecting plate 17 are fixed together by bolts.

[0041] In this embodiment, the lifting plate 16, the helmet forming upper mold 2, and the connecting plate 17 are fixed together with high-strength bolts. During installation, the connecting plate 17 is first fixed to the side of the helmet forming upper mold 2 with bolts, and then the lifting plate 16 and the connecting plate 17 are fastened together with another set of bolts to form a stable triangular support structure.

[0042] Combination Figure 1-4 As shown, the upper mold fixing component 7 includes an upper mold fixing plate 18 disposed between the lower helmet forming mold 1 and the upper helmet forming mold 2, and the upper mold fixing plate 18 is fixed to the upper helmet forming mold 2 by bolts.

[0043] In this embodiment, the upper mold fixing plate 18 is connected to the corresponding screw holes of the helmet forming lower mold 1 by multiple sets of bolts, which firmly fixes the upper mold when the mold is closed, preventing it from displacing under pressure.

[0044] Combination Figure 1-4 As shown, the leak-proof sealing part 8 includes a sealing plate 19 disposed between the lower helmet forming mold 1 and the upper helmet forming mold 2, and the helmet forming protrusion 10 passes through the sealing plate 19.

[0045] In this embodiment,

[0046] The sealing plate 19 of the leak-proof sealing part 8 is a high-temperature resistant rubber plate with a through hole in the middle that matches the shape of the helmet forming protrusion 10. When the mold is closed, the sealing plate 19 is sandwiched between the lower helmet forming mold 1 and the upper helmet forming mold 2. The helmet forming protrusion 10 passes through the through hole. Under pressure, the rubber sealing plate is pressed tightly against the mold surface to form a sealing layer and prevent material from overflowing.

[0047] The working principle of this utility model is as follows:

[0048] When using this bulletproof helmet non-cutting stretching mold, first place the material to be formed on the lower helmet forming mold 1, ensuring uniform material distribution. Then, control the lifting plate 16 through external lifting equipment to slowly lower the upper helmet forming mold 2, gradually closing the upper helmet forming mold 2 and the lower helmet forming mold 1. During the closing process, the helmet forming recess 5 and the helmet ear one-time forming insert 4 cooperate with each other, wherein the helmet forming protrusion 10 fits tightly with the forming cavity 14, and the ear forming protrusion 12 cooperates with the corresponding position of the forming cavity 14, so that the material is filled and formed according to the shape and space of the mold under pressure, simultaneously forming the helmet body and ear parts. At the same time, the material around the positioning connecting shaft forming rod 15 is also formed around it under pressure, simultaneously forming the connecting shaft used to fix the inner buffer layer of the helmet. During the mold closing process, the upper mold fixing part 7 stably fixes the upper helmet forming mold 2, ensuring the positional accuracy of the mold during the forming process; the sealing plate 19 prevents material leakage and ensures the smooth progress of the forming process. Once the molding process is complete, the upper helmet molding mold 2 is lifted again by the lifting plate 16, the mold is opened, and the formed bulletproof helmet blank can be taken out. Only simple trimming and processing are required afterward, without the need for complicated secondary processing procedures, which greatly improves production efficiency and reduces production costs.

[0049] 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.

[0050] Although this document frequently uses terms such as helmet forming lower mold 1, helmet forming upper mold 2, lifting and pulling component 3, helmet earpiece one-time forming insert 4, helmet forming recess 5, helmet internal positioning part forming component 6, upper mold fixing component 7, leak-proof sealing part 8, insert 9, helmet forming protrusion 10, earpiece forming part 11, earpiece forming protrusion 12, lower mold insert plate 13, forming cavity 14, positioning connecting shaft forming rod 15, lifting plate 16, connecting plate 17, upper mold fixing plate 18, and sealing plate 19, 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 non-cutting stretching mold, comprising a lower helmet forming mold (1) and an upper helmet forming mold (2), characterized in that, The upper helmet forming mold (2) is provided with a lifting and pulling component (3), the lower helmet forming mold (1) is provided with a helmet ear body one-time forming insert (4), the upper helmet forming mold (2) is provided with a helmet forming recess (5) and a helmet inner positioning part forming component (6), the position of the helmet ear body one-time forming insert (4) corresponds to the position of the helmet forming recess (5) and the shape is matched, and an upper mold fixing component (7) and a leak-proof sealing part (8) are provided between the lower helmet forming mold (1) and the upper helmet forming mold (2).

2. The bulletproof helmet stretching die according to claim 1, characterized in that, The helmet earpiece insert (4) includes an insert (9) disposed in the lower helmet molding mold (1), the top of the insert (9) is provided with a helmet molding protrusion (10), and the two ends of the helmet molding protrusion (10) are provided with earpiece molding portions (11).

3. The bulletproof helmet non-cutting stretching mold according to claim 2, characterized in that, The lug forming part (11) includes lug forming protrusions (12) disposed at both ends of the helmet forming protrusion (10), and the two lug forming protrusions (12) are symmetrically arranged along the center line of the helmet forming protrusion (10).

4. The bulletproof helmet non-cutting stretching mold according to claim 3, characterized in that, The bottom of the insert (9) is provided with a lower mold insert plate (13), and the lower mold insert plate (13) is fixed to the helmet forming lower mold (1) by a number of bolts.

5. The bulletproof helmet non-cutting stretching mold according to claim 2, characterized in that, The helmet forming recess (5) includes a forming cavity (14) disposed in the upper helmet forming mold (2), and the forming cavity (14) corresponds to the position of the helmet forming protrusion (10) and the shape is compatible.

6. The bulletproof helmet non-cutting stretching mold according to claim 5, characterized in that, The helmet internal positioning part (6) includes a positioning connecting shaft forming rod (15) disposed in the forming cavity (14), and the positioning connecting shaft forming rod (15) is disposed opposite to the helmet forming protrusion (10).

7. The bulletproof helmet stretching die according to any one of claims 1-6, characterized in that, The lifting and pulling component (3) includes a lifting plate (16) disposed above the helmet forming upper mold (2), the cross-sectional area of ​​the lifting plate (16) being larger than the cross-sectional area of ​​the helmet forming upper mold (2).

8. The bulletproof helmet stretching die according to claim 7, characterized in that, A connecting plate (17) is provided between the lifting plate (16) and the helmet forming upper mold (2), and the lifting plate (16), the helmet forming upper mold (2) and the connecting plate (17) are fixed together by bolts.

9. The bulletproof helmet stretching die according to any one of claims 1-6, characterized in that, The upper mold fixing component (7) includes an upper mold fixing plate (18) disposed between the helmet forming lower mold (1) and the helmet forming upper mold (2), and the upper mold fixing plate (18) is fixed to the helmet forming upper mold (2) by bolts.

10. The bulletproof helmet non-cutting stretching mold according to claim 2, characterized in that, The leak-proof sealing part (8) includes a sealing plate (19) disposed between the lower helmet forming mold (1) and the upper helmet forming mold (2), and the helmet forming protrusion (10) passes through the sealing plate (19).

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