SK5214Y1 - Cartridge case for non-toxic shot cartridge - Google Patents

Abstract

The cartridge consists of a tubular body (1) formed multi-component injection molding technology whose bottom is sprayed with the same technology at least one other layer of plastic is a smooth cartridge case (2). The body (1) has an outer surface grooved and the inner surface is smooth and formed at the bottom thereof space for propellant dust filling and in its day created a hole connecting the space to the match (3) with the space for propellant dust charge, with both axial and diameter a matching match hole is also formed in the smooth foot (2). The opening at the bottom of the cartridge body (1) consists of three cylindrical adjacent spaces with different radii: the lower cylindrical space on the match (3) intended to insert a non-toxic primer, followed by a flammable primer the opening (5) and the space above it to the ignition amplifier the cartridge (4) and the diameter of the cylindrical match space (3) differs according to the size of the non-toxic match for different caliber weapons.

Description

The technical solution relates to a full plastic cartridge for non-toxic shotgun cartridge, for all known calibers, which cartridge is made by multi-component injection molding technology.

BACKGROUND OF THE INVENTION

All-plastic cartridges are known, for example GB 1161422 or RU 11882, which discloses a plastic cartridge in the form of a thin-walled cylinder with a hole for a match in the bottom of the cartridge. The device for their production consists of an injection mold and a manifold block with flow holes. The Czech application PV 2003-233 describes a plastic cartridge and a device for its production. The essence of this solution is also a plastic cartridge in the form of a thin-walled cylinder with a wall tapering from the heel to the other end of the cartridge and with a hole in the bottom for the match. This opening inside the cartridge case is covered by an orifice separating the match space from the dust compartment. Slovak utility model SK 2171 also solves all-plastic cartridge, whose essence is that the thickness of its heel is dependent on the caliber of the weapon.

A disadvantage of the all-plastic cartridges used hitherto is the lack of strength in the heel region. All-plastic casings are thin-walled tubes which, although having a varying thickness decreasing away from the heel, are related to manufacturing technology - in particular, to facilitate removal of the cast casing from the mold. The Slovak utility model SK 2171 solves the problem of strength so that the thickness of the shoe is dependent on the caliber of the weapon. This solution also has disadvantages. In the case of a larger thickness of the plastic casting, the mass is unevenly cooled and thus unevenly shrinks. The resulting surface, but also below, appears to have sunken spots, bubbles and bulges, which does not contribute to the strength at this exposed area. In addition, according to this utility model, cartridges cannot be produced in series, because it is necessary to change the material each time the caliber is changed.

These disadvantages are eliminated by the method of production of the cartridge by multi-component injection molding of plastics according to the Czech PV 2007-75 and the all-plastic cartridge for bracket charges according to the utility model CZ 16912 of the author of the technical solution. This completely recyclable cartridge has a body formed by multi-component injection molding and has a smooth shoe, at least one additional layer of plastic, sprayed on its bottom. The shoe has a match opening at the bottom axially coinciding with a match opening in the bottom of the body. The shoe may advantageously be formed by at least one more solid plastic layer than that of the cartridge body.

Multiple layers of plastic are gradually sprayed onto exposed areas of the cartridge body, i. j. on the heel, especially if other layers of harder plastic not only increase the strength of the cartridge body several times, both against bursting in the shot and twisting or other deformation caused by external conditions, handling or storage, but also prevents the formation of casting errors, bubbles and recesses in shake it as it cools, because they are thin layers that cool evenly.

This technology is more cost-effective, for mass production and for all calibers. Cartridges are very easy to recycle because they contain a minimum of metal. After the cartridge has been crushed, the remainder of the match is separated by means of the separates only and the plastic is reused.

The disadvantage of this solution is that it is not always completely ecological, because it uses primers with a toxic filling, mainly containing lead, which dissolves in nature and pollutes groundwater and water resources.

The essence of the technical solution

This disadvantage is overcome by a plastic casing for non-toxic charge, produced by multi-component injection molding, which is completely recyclable and uses a non-toxic primer. However, non-toxic matches, such as Boxer matches, are too small, they do not develop a fire enough to safely ignite the dust in the burst charge. This problem is solved by the proposed technical solution by using an intensifying ignition charge, of course equally nontoxic when no toxic gases are produced after the firing. This design is adapted to the construction of a full plastic cartridge, which according to the technical solution has a hole in the bottom, connecting the match with the propellant dust filling, which consists of three cylindrical adjacent areas of different radius. The lower cylindrical space is intended to accommodate a nontoxic match, in this case a Boxer match, followed by an ignition hole and above it is a recess for a spark-enhancing fill, for example in the form of a capsule.

The main advantages of the cartridge for the non-toxic shotgun cartridge according to the technical solution are its complete ecological cleanliness, recyclability and low production costs.

SK 5214-1

BRIEF DESCRIPTION OF THE DRAWINGS

The drawing shows, in longitudinal axial section, an exemplary embodiment of a cartridge for a non-toxic brakka charge according to the invention.

List of reference marks:

- casing body

- cartridge foot

- space for match

- space for positive-ignition charge

- ignition hole

- space for propellant dust

- space for collective or uniform shot

Example of technical solution

The cartridge body 1 formed by the multi-component injection molding technology is grooved on the outer surface and smooth on the inner surface. The wall thickness of the cartridge body 1 is variable so that it decreases in steps from the bottom. This measure is necessary to easily remove the cartridge body 1 from the mold. At its bottom is a multi-component plastic injection molded foot 2 cartridge. The space 7 at the top of the cartridge body 1 serves for receiving a bullet or a uniform bullet. The space 6 in the lower part of the cartridge body 1 is designed for a propellant powder charge. A hole is formed in the bottom of the cartridge body 1 in the direction of its longitudinal axis, connecting the match to the space for the propellant dust 6. The hole consists of three cylindrical, mutually adjacent spaces of different radius. From these compartments, the lower compartment is intended for insertion of a non-toxic match 3, in this case a Boxer match, followed by an ignition opening 5 and above it is a space for the ignition boost 4. The diameter of the cylindrical space for according to the caliber of the weapon used. An axially identical diameter hole for the match will also be formed in the smooth shoe 2 of the cartridge, which is formed on the cartridge body 1.

PROTECTION REQUIREMENTS

Claims (2)

An all-plastic casing for a non-toxic braked charge comprising a tubular body (1) formed by multi-component injection molding, the lower part of which is sprayed with at least one further layer of plastic by a smooth bead (2), the body (1) having an outer surface. grooved and inner surface smooth and at its bottom is created space for the propellant dust and in its bottom is created hole connecting the match box (3) with space for the propellant powder filling, where the axially and diameter matched hole for the match is created (1) Smooth shoe (2), characterized in that the opening in the bottom of the body consists of three cylindrical adjoining spaces of different radius: a lower cylindrical match space (3) intended to receive a nontoxic match, followed by an ignition opening (5) and the space above it for the ignition boost (4). Full plastic cartridge for non-toxic brakka charge according to claim 1, characterized in that the diameter of the cylindrical space for the match (3) differs according to the size of the non-toxic match for different caliber weapons. 1 drawing