Preparation method of bulletproof helmet

A bulletproof helmet and helmet body technology, which is applied in the direction of protective equipment, protective equipment, chemical instruments and methods, etc., can solve problems such as uncomfortable wearing, limited elastic modulus and tensile strength, and poor bullet impact effect of the helmet

Active Publication Date: 2017-09-08
SHENYANG JIHUA 3547 SPECIAL TYPE ARMAMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bulletproof helmets on the market include two types, metal and non-metal: metal bulletproof helmets are cheap, but the shell is heavy and uncomfortable to wear; non-metal bulletproof helmets are mainly made of aramid Ⅱ, although the bulletproof made of aramid Ⅱ The helmet solves the shortcomings of the metal helmet, but due to the limited elastic modulus and tensile strength of the aramid fiber II, the impact effect of the helmet is not very good under certain conditions, and the impact depression of the helmet is large, which cannot meet the standard Requirements: In the past molding method, the aramid fabric should first be spread into the die, and the materials should be rotated and overlapped. In this way, the material needs to be larger than the size of the helmet shell, that is, part of the material must be outside the mold to ensure the helmet shell Dimensions and ease of ejection

Method used

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  • Preparation method of bulletproof helmet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The technological process of making bulletproof helmets is as follows:

[0036] 1. Cutting:

[0037] According to the requirements, use a pencil to draw lines on the aramid cloth according to the template, a total of 16 specifications, and then use an automatic sharpening and cutting machine to cut according to the lines. No. 1-8 is aramid fiber II, and No. 9-16 is aramid fiber III. Finally, use a band saw cutting machine to cut and trim No. 1-16.

[0038] technical standard:

[0039] (1) Typesetting and cutting according to the requirements.

[0040] (2) Mark the number of layers of the blank according to the specified requirements.

[0041] Process requirements:

[0042] (1) When spreading the cloth, the edge of the cloth should be aligned with one side, and the order of cutting should be based on the small piece first.

[0043] (2) When cutting, it should be cut strictly according to the line to prevent cutting and uneven secant lines.

[0044] (3) Mark and com...

Embodiment 2

[0147] The ballistic results of the ballistic helmet described in Example 1 made by mixing aramid fiber II and aramid fiber III are as follows:

[0148] Ministry of Public Security Level 2, Type 51 7.62mm pistol bullet (lead core)

[0149] serial number Impact part Bullet speed (m / s) Wear or not Depression (mm) 1 Front part 454.143 Defend 24.8 2 the left 453.892 Defend 7.4 3 rear 436.015 Defend 10.4 4 right part 439.560 Defend 7.4 5 top 444.543 Defend 8.4

[0150] The ballistic results of bulletproof helmets made of aramid Ⅱ on the market are as follows:

[0151] Ministry of Public Security Level 2, Type 51 7.62mm pistol bullet (lead core)

[0152] serial number Impact part Bullet speed (m / s) Wear or not Depression (mm) 1 Front part 450.143 Defend 32 2 the left 453.9 Defend 20 3 rear 436.0 Defend 17 4 right part 439.6 Defend 18 5 top 443.235...

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Abstract

The invention discloses a preparation method of a bulletproof helmet. The preparation method mainly comprises steps as follows: cutting, pasting forming, prepressing, edge cutting, forming, edge trimming, drilling, bonding of edge sealing rubber strips, surface treatment, paint spraying of the inner surface, bonding of a cap lining, paint spraying of the outer surface, inspecting and packaging. The method has the advantages that a shell of the bulletproof helmet is made of aramid II/III, so that bulletproof performance of the helmet is improved, and mass of the helmet is reduced.

Description

technical field [0001] The invention belongs to the technical field of bulletproof protective equipment materials, and relates to a preparation method of a bulletproof helmet. Background technique [0002] In recent years, terrorist attacks have continued to occur in various countries, and personnel from various countries have stepped up research and development in the field of security protection. With the development of society and economy in our country, people's awareness of safety protection has increased, and the demand for safety protection equipment has increased. The country also clearly stated in the "Twelfth Five-Year Plan" that it will increase support for the field of public safety. In order to effectively prevent the occurrence of terrorist incidents, serious crimes must be severely cracked down. In view of the particularity of these vicious terrorist incidents, it is necessary to strengthen the protection of our public security officers and security personnel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H1/04B32B37/10B32B37/06
CPCB32B37/06B32B37/10B32B2262/0269B32B2571/02F41H1/04
Inventor 张巾玲龙钦生王宝刚马兴海吴丽丽李响刘英环周晶毕书桂
Owner SHENYANG JIHUA 3547 SPECIAL TYPE ARMAMENT
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