KR100427221B1 - Hand grenade for nature friendly practice and the manufacture method - Google Patents

Abstract

PURPOSE: An environment-friendly hand grenade for training and a manufacturing method thereof are provided to improve efficiency of explosion, to prevent injury of a user, and to train a great number of persons for a short time by manufacturing the hand grenade with mineral naturally decomposed. CONSTITUTION: A cartridge(15) embedding a detonator(14) is installed in the lower part of an environment-friendly hand grenade, and a fuse body(12) made from biodegradable plastic resin is filled with a retarder(13). The hand grenade body is thread-connected to the fuse body, and composed of mineral compound including barite of 80 to 90 wt%, tungsten of 5 to 10 wt%, silica of 0.1 to 0.5 wt% and loess of 2 to 3 wt%. A thread groove is formed in the outer periphery of the fuse body to combine the hand grenade body. A safety link(17), a safety clip(19) and a safety grip(20) are formed in the fuse body.

Description

Eco-friendly practice grenade and its manufacturing method {HAND GRENADE FOR NATURE FRIENDLY PRACTICE AND THE MANUFACTURE METHOD}

The present invention relates to a practice grenade, and more particularly, to an eco-friendly practice grenade and a method for manufacturing the grenade body that is not contaminated by the residue even if it is not collected after use by producing a natural degradable eco-friendly material. will be.

In general, a grenade is a small bomb for melee combat to kill or destroy an enemy or weapon in close combat with an enemy. The grenade is made relatively light so that a person can pick it up by hand and the grenade contains a large explosive charge. It consists of a fuse to ignite the explosives charged in the body, and the fuse consists of a safety loop, a safety creep, and a safety handle.

The types of grenades are classified into subdivision grenades for personnel killing, attack grenades for weapon destruction, gas grenades for lowering enemy power, smoke grenades for signaling, and such grenades. It is necessary to learn enough usage and safety rules in advance as it can damage itself and allies by carelessness of the user.

Therefore, when training is not a real combat situation, the training grenade is trained with a relatively small explosive grenade, and the grenade is made of a metallic material with a body and fuse, and the grenade is collected and reused after use.

1 is a cross-sectional view of the conventional grenade for practice, and when looking at its configuration, the fuse body 2 is screwed onto the upper portion of the body 1 forming the lower body with synthetic rubber material, and the retarder is disposed at the bottom of the fuse body 2. (3) and the detonator tube 4 are sequentially formed, and the filling body 5 made of iron and various inorganic materials is filled in the coal body 1 so as to match the weight with the actual grenades. Reference numeral 6 is a ball, 7 is a safety pin, and 8 is an ignition primer.

However, if the practice grenade is not recovered after use, the body and fuse are leaked to the outside to be converted into a similar explosive, and if it is not recovered, there is a problem of contaminating the natural environment because it is not easily decomposed. .

In addition, the terrain of the training site is diverse, and other objects or weeds require considerable time and manpower to recover the grenade body and fuse after training, and the training bottle is always burdened with the need to recover the training grenade, thereby reducing the training effect. There was a problem that there is a fear of loss of the used hand grenade.

In addition, there is a problem that the workability is lowered by filling the filling inside the production of the carcass forming the appearance.

The present invention has been proposed to improve the above problems in the prior art, by producing a grenade with a natural degradable environmentally friendly material, there is no need to recover the residue after the grenade practice to shorten the training time and pollute the natural environment The purpose is not to let it.

In addition, another object of the present invention is to improve the work efficiency by making the grenade body into an integral structure without dividing the body and the filler.

Figure 1 is a conventional general practice grenade cross-sectional structure diagram.

Figure 2 is a cross-sectional structural view of the present invention grenade.

Figure 3 is an exploded perspective view of the present invention grenade.

Figure 4 is a manufacturing process grenade for the present invention practice.

<Explanation of symbols for the main parts of the drawings>

10: grenades body 11: screw groove

12: fuse body 13: retarder

14: detonator tube 15: cartridge

17: safety ring 18: screw groove

19: safety creep 20: safety handle

The object is that the grenade body screwed to the upper body of the fuse body made of biodegradable resin forms an integral structure without a separate filling space therein, the grenade body is barite and barite, so as to enable natural decomposition; It can be achieved through environmentally friendly practice grenade and its manufacturing method, characterized in that made of minerals including silica sand, loess.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

First, looking at the structure of the environmentally friendly practice hand grenade according to this embodiment through FIGS. 2 and 3, the cartridge 15 with the detonation tube 14 is mounted on the bottom, and the retardant 13 is filled therein. The fuse body 12 is made of a biodegradable plastic resin material, the grenades body 10 is screwed to the fuse body 12 is a space to be filled with a separate filler as shown in the cross-sectional view of FIG. It has an integral cross-sectional structure that it does not have.

In particular, the grenade body 10 of the present invention is made of a mixture of minerals such as barite and barite, silica sand, loess, etc., the amount of mixing between each raw material is 80 to 90% by weight of barite, 5 to 10% by weight of barite, It is preferably mixed at a ratio of 0.1 to 0.5% by weight, 2 to 3% by weight ocher. Among the mixed raw materials, in particular barite and barite have a specific gravity of 4 or more, which is much higher than the specific gravity of the average stone powder (average 1.45), thereby achieving a weight similar to the actual grenade without increasing the size of the body 10.

On the other hand, the fuse body 12 is a known density of densified by adding inorganic materials such as talc to a material mixed with polycaprolactone (PCL) or polybutylene succinate (PBS) and biodegradable starch (corn starch or potato starch). Made by technology, the screw groove 18 is formed along the outer circumference of the grenade for assembly with the grenade body 10, the safety ring 17, the safety creep 19 is installed on the upper side, safety to one side The handle 20 is configured.

The manufacturing method for the eco-friendly practice hand grenade which is the present invention having such a configuration will be described with reference to FIG. 4.

First, in the raw material supply step (ST 1), powdered barite, barite, silica, and loess are supplied into the stirrer at a predetermined ratio through a feed hopper, and the supplied raw materials are evenly mixed by the stirring operation in the stirrer. The stirring step is to be carried out. (ST 2)

The grenade body 10 of the grenade body 10 in which the agitation cartridge 15 is inserted into the mixed raw material in which the stirring is performed is additionally added in the processing step (ST 3), and then the insertion hole into which the fuse cartridge 15 is inserted is formed upward. A machining step ST 3 for shaping the shape is performed in the molding machine. In this case, while forming the outer shape of the body and the screw groove 11 for coupling the fuse body 12 is formed, the adhesive is added to the raw material in a ratio of 5 to 8% by weight relative to the total weight of the mixed raw material. It is preferably added, and CMC (carboxymethylcellulose) is used as the adhesive type.

Then, the grenade body 10 is formed is subjected to a heat treatment step (ST 4) to be given rigidity in the heating furnace, the internal temperature is maintained at approximately 80 ~ 120 ℃ by increasing the explosion strength of the product Damage during assembly and normal distribution and storage is prevented.

In addition, the grenade body 10 having a certain strength by the heat treatment step (ST 4) and the screw groove 11 is formed in each of the fuse body 12 made of a biodegradable plastic material made in a separate process Corresponding to 18), the fuse body assembly step (ST 5) for the screw assembly for the upper and lower structures in the rolling device is to be carried out continuously.

In this way, the grenade body 10 is assembled with the fuse body 12 is completed after the post-process, such as painting work in a specific color, the product is completed through the packaging step (ST 6) for storage and movement, Among them, the selected grenade is tested and delivered to the user.

The practice grenade produced by such a manufacturing method, since the grenade body 10 is made of the main material as a main component, it is not only easy to obtain the material, but also contains a large amount of barite and barite which are relatively high specific gravity materials. By doing so, the weight and shape are the same as the actual grenades made of the existing metal, so the training can be performed under the same conditions as in the actual practice.

In addition, since the material of the practice grenade 10 is composed of a body 12 of a biodegradable mineral body and a fuse 20 of biodegradable starch material, it can be used without the need to recover the practice grenade after use.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the environmentally friendly practice grenade structure and manufacturing method of the present invention may be variously modified and implemented by those skilled in the art.

As an example, in the embodiment of the present invention, the body is made of minerals, which are a mixture of barite, barite, silica and loess, and the fuse is made of biodegradable starch, but the fuse body is other natural decomposition and nature friendly. It can be applied to make a material.

Therefore, these modified embodiments should not be understood individually from the technical spirit or prospect of the present invention, the modified embodiments should fall within the appended claims of the present invention.

As described above, the practice grenade of the present invention does not need to collect debris after the grenade throwing training because the grenade body is made of a mineral which can be quickly decomposed naturally, thereby enabling training of a large number of personnel in a short time. Effect.

In addition, the use of environment-friendly materials can be used without the concern of environmental pollution. Also, since the material is a mineral material, it has an excellent effect of explosion and explosion when exploding, and can minimize user injury due to debris during use. It works.

In addition, even if an integral structure is not filled with a separate filling inside, it is possible to meet the same weight as the actual grenades, thereby reducing the production process, thereby improving productivity and significantly lowering the manufacturing price of the practice grenades accordingly. It shows the advantage that the use cost is low.

Claims (3)

The grenade body, in which a fuse body made of biodegradable resin is screwed on the upper part, forms a unitary structure without a separate filling space therein, and the grenade body is formed of barite, barite, silica sand and loess so as to be naturally decomposed. Eco-friendly practice grenade, characterized in that consisting of a mineral containing. The method according to claim 1, The grenade body is an eco-friendly practice grenade, characterized in that the barite is 80 to 90% by weight, barite 5 to 10% by weight, silica sand 0.1 to 0.5% by weight, ocher 2 to 3% by weight. In manufacturing a practice grenade consisting of a grenade body and a fuse body, A raw material supply step of supplying barite, barite, silica and loess to manufacture a grenade body (ST 1); A stirring step (ST 2) for evenly mixing the raw materials supplied by the raw material supply step (ST 1); Processing step (ST 3) for forming the shape of the screw coupling for the fuse in the upper center while forming the shape of the grenade body by adding the adhesive and water to the mixed raw material stirred by the stirring step (ST 2); A heat treatment step (ST 4) for providing rigidity to the grenade body produced by the processing step (ST 3); Fuse body assembly step for screwing the fuse body made of biodegradable resin in the grenades body having a certain strength by the heat treatment step (ST 4) (ST 5); Eco-friendly practice grenade manufacturing method characterized in that the production is made, including; packing step (ST 6) for wrapping the practice grenade assembled by the fuse body assembly step (ST 5).