JP3167941U - New Shotgun Cushion Wads - Google Patents

Abstract

Disclosed is a new shotgun cushion wadding suitable for continuous production of shotgun loading. A cushion gun for a shotgun according to the present invention is a shotgun cushion wad comprising a cup part for storing a shot, a cushion part, and a gunpowder partition part. And a fragile connecting portion in the vicinity of the opening end of the slit. Further, the shotgun cushion wad according to the present invention has a depth of 0.3 to 0.7 mm and a width of 0.1 to 0.1 which communicates between the cushion part and the explosive by gas on the outer periphery of the explosive partition part. It has one or a plurality of longitudinal grooves of 1.0 mm. [Selection] Figure 2

Description

  The present invention relates to a shotgun cushion wad suitable for continuous high-speed production of shotgun loading.

  In a general shotgun mounting, a member called cushion wads is loaded in a cartridge case in order to inject shots at a uniform pressure and speed. This shotgun cushion wad is usually composed of a cup portion for storing shots, an explosive partition portion for sealing explosive combustion gas, and a cushion portion interposed between the cup portion and the explosive partition portion. ing.

  The cup portion of the shotgun cushion wad has an opening in the cup portion so that the side wall of the cup portion can be opened laterally in the shape of a petal when bullets are fired out of the muzzle of the shotgun. A plurality of vertical slits extending from the end to the vicinity of the bottom. When the side wall of the cup part opens laterally in the shape of a petal after the bullet is fired, the cushion wad is decelerated due to air resistance, and the shot in the cup part separates from the cushion wad and flies. Here, if the side wall of the cup portion is opened early after the bullet is fired, the dispersion degree of the shot is increased, and if it is opened late, the dispersion degree of the shot is reduced.

  The cushion part of the shotgun cushion wad is provided to alleviate the impact when the shot is fired, and to transmit energy to the shot with a moderate pressure and speed.

  The gunpowder partition part of the shotgun cushion wad is provided to receive the pressure of the combustion gas at the time of firing the shot, which is generated as a result of the detonator being struck by the shooter of the shotgun and burning the gunpowder in the shell. Therefore, normally, from the viewpoint of improving the performance of the shell, the clearance between the outer peripheral edge of the gunpowder partition and the shell (cylindrical casing) is made small in order to reduce the leakage of gas generated when the shell is fired. .

  Various types of conventional cushion guns for shotguns are known, and generally include a cup part for storing a shot as described above, a gunpowder partition part for sealing gunpowder combustion gas, the cup part and the gunpowder. It is comprised from the cushion part interposed between partition parts (refer patent documents 1-4 below).

However, there are the following problems when shotgun mounting is manufactured continuously at a high speed by an automatic manufacturing apparatus using the conventional cushionguns for shotguns.
As described above, the cup part of the conventional cushion guns for shotguns has a plurality of slits in the vertical direction from the opening end of the cup part to the vicinity of the bottom part. That is, since the slit is provided at the opening end of the cup portion so as to separate the side wall portion of the cup portion, it is used for a shotgun in a cartridge case (cylindrical casing) as a part of the automatic manufacturing apparatus. In the bucket that accommodates the bulk of the cushion wad in the process of continuously supplying the cushion wad to insert the cushion wad, the cup portion of the other cushion wad is placed in the slit provided in the cup portion of one cushion wad The side wall portion separated by the slits may be sandwiched, and the one cushion wad and the other cushion wad may be loosely coupled. As a result of such coupling, the cushion wad cannot be continuously supplied in alignment with the state in which the explosive partition part of another cushion wad is placed on the cup part of one cushion wad. In simple terms, the slits between the cushion wads may bite and the continuous supply of the cushion wads may stop. If the continuous supply of cushion wads is stopped, shotgun ammunition cannot be continuously manufactured at high speed by an automatic manufacturing apparatus.

  Further, as described above, from the viewpoint of improving the performance of the bullet, in order to reduce the leakage of the gas generated when the bullet is fired, the gap between the outer peripheral edge of the explosive partition portion of the cushion wad and the cartridge case (tubular casing) Although the clearance is reduced, if this clearance is too small, the automatic manufacturing device will not allow the gas at the bottom of the cartridge to escape when the cushion guns for the shotgun are inserted at high speed into the cartridge (cylindrical casing). Compressed gas pressure between the gunpowder partition and the lower part of the cartridge case may cause the cushion wad inserted from the cartridge case to pop out after the cushion wad is inserted and before the shot is filled (stored). is there.

JP-A-52-55300 Japanese Utility Model Publication No. 63-44715 Japanese Patent Laid-Open No. 10-19500 JP 2003-130598 A

  The problem to be solved by the present invention is that, in view of the above-mentioned problems of the conventional cushion guns for shotguns, the shotguns are loaded continuously at high speed using an automatic manufacturing apparatus using the conventional cushion guns for shotguns. It is to solve the problem that the continuous supply of cushion wads when manufacturing and the problem that the cushion wad inserted from the cartridge case pops out after the cushion wad is inserted.

  As a result of earnest research on the structure of the shotgun cushion wads in order to solve the above-mentioned problems, the present inventors have provided a fragile connecting part in the vicinity of the opening end of the slit of the cup part of the shotgun cushion wads, And it discovered that the said subject was achieved by providing in the explosive partition part the some groove | channel or hole which connects between a cushion part and an explosive by gas, and came to complete this invention.

Specifically, the present invention is as follows:
[1] A shotgun cushion wad composed of a cup part for storing shots, a cushion part, and a gunpowder partition part, the cup part having a plurality of slits extending from the open end to the vicinity of the bottom, and In the vicinity of the opening end portion of the slit, there is a fragile connecting portion whose depth is 50 to 90% with respect to the thickness of the side wall of the cup portion, and the cushion portion on the outer peripheral edge of the explosive partition portion The above-mentioned shotgun cushion wads, comprising a plurality of longitudinal grooves having a depth of 0.3 to 0.7 mm and a width of 0.1 to 1.0 mm communicating with each other by gas.

  By using the cushion guns for the shotgun according to the present invention, the problem that the continuous supply of the cushion wads stops when the shotgun shots are continuously manufactured at high speed by the automatic manufacturing apparatus, and the cushion wads After insertion, the problem that the cushion wad inserted from the cartridge case pops out is solved.

FIG. 1 is a longitudinal sectional view of a shotgun mounting according to the present invention. FIG. 2 is a longitudinal sectional view of a cushion gun for a shotgun according to the present invention. 3 is a cross-sectional view taken along the line I-I 'of FIG. 4 is a cross-sectional view taken along the line II-II 'of FIG.

The present invention will be described below with reference to embodiments shown in the drawings.
FIG. 1 is a vertical cross-sectional view of a shotgun mounting according to the present invention, FIG. 2 is a vertical cross-sectional view of a shotgun cushion wad according to the present invention, and FIG. 3 is a cross-sectional view taken along the line II ′ of FIG. 4 is a cross-sectional view taken along the line II-II ′ of FIG.

1 and 2, reference numeral 1 denotes a shotgun mounting. Normally, one end of a cylindrical casing 5 made of a material such as paper or polyethylene is inserted into the base metal 2, and a base wad 3 made of a material such as polyethylene is fitted inside the cylindrical casing. Yes. The material of the base metal 2 can be iron plated with copper, nickel, brass or the like. A detonator 4 is packed inside the base wads 3. The detonator 4 ignites when it is hit with a shotgun firing pin. Gunpowder 6 is filled between the gunpowder partition portion 8 of the base wad 3 and the shotgun cushion wad 7. The explosive 6 is ignited by the ignition of the detonator 4 and starts to burn. The shotgun cushion wad 7 can be integrally formed as a material comprising the explosive partition 8, the cushion 10 and the cup 11 using polyethylene or the like as a material. A shot 15 is housed inside the cup 10 of the shotgun cushion wad 7. The shot 15 can be a metal sphere such as lead or iron. The other end of the cylindrical casing is normally closed by a crimp 16 after the shot 15 is accommodated.
The size of the shotgun mounting 1 is generally about 20 mm in diameter and 60 mm in length.

  2 to 4, a plurality of slits extending from the opening end portion to the vicinity of the bottom portion provided in the cup portion of the shotgun cushion wads according to the present invention, and the weakness provided in the vicinity of the opening end portion of the slit. A depth of 0.1 to 1.0 mm and a width of 0 to communicate between the cushion part and the explosive provided on the outer peripheral edge of the gunpowder partition part of the shotgun cushion wads according to the present invention by gas A description will be given of vertical grooves of 1 to 1.0 mm and holes communicating with the cushion portion and the explosive by gas.

In the cup part of the shotgun cushion wads according to the present invention, when the bullet is fired outside the shotgun muzzle, the side wall of the cup part can be opened in a lateral manner in a petal shape. A plurality of vertical slits extending from the open end of the cup portion to the vicinity of the bottom portion are provided. The number of slits is preferably four. In the conventional cushion guns for shotgun cushions, the slits are provided so as to separate the side walls of the cup part. However, in the cushion wads according to the present invention, adjacent side walls separated by the slits 12 Are connected by a fragile connecting portion 13 in the vicinity of the opening end. In FIG. 3, the fragile connecting portion is formed as a part of the uppermost peripheral edge of the opening end of the cup, that is, as a fixed length longitudinal groove provided inside the side wall portion. The connecting part may be a groove provided on the outer side of the peripheral part, not in the uppermost part of the opening end but in the vicinity thereof.
The length of the fragile connecting portion is preferably 1 mm to 3 mm, more preferably about 2 mm. Further, the depth of the vertical groove is preferably 50 to 90%, more preferably about 70%, with respect to the thickness of the side wall of the cup portion.

Shotgun shells are usually manufactured continuously at high speed using automated manufacturing equipment, as described below.
In the specification of the present application, “high speed” means that the production speed of shot ammunition is 150 pieces / minute or more. The normal production rate is approximately less than 100 pieces / minute.
First, a case with a cylindrical casing, base wads, and detonator attached to a base metal is prepared. The gunpowder is filled from the upper opening of the cylindrical casing of the shell while moving this by the moving means. On the explosive, a shotgun cushion wad is inserted into the cylindrical casing. The insertion speed of the shotgun cushion wad is about 20 to 72 cm / sec, preferably about 30 to 48 cm / sec, for example, about 36 cm / sec when the shotgun is fast. In the case of a high speed, the supply speed of the shotgun cushion wad to be inserted must be equal to or more than 150 shots / minute which is the production speed of the shotgun. Next, the shot is filled into the cup portion of the cushion guns for the shotgun. Finally, the upper portion of the cylindrical casing is crimped to seal the cartridge case, and a shotgun shell is manufactured. Then, printing etc. are given to the surface of a cylindrical casing, and the manufactured bullet is boxed.

  The shotgun cushion wads according to the present invention have the above-described weak coupling portion, and as a part of the automatic manufacturing apparatus, when the shotgun bullets are continuously manufactured at high speed by the automatic manufacturing apparatus, Since the side wall portion of the cup portion is not deformed in the bucket that accommodates the bulk of the cushion wad in the process of continuously supplying the cushion wad for inserting the shotgun cushion wad into the cartridge case (tubular casing), 1 When the side wall portion separated by the slit of the cup portion of the other cushion wad is sandwiched in the slit provided in the cup portion of the other cushion wad, the one cushion wad and the other cushion wad are loosely coupled Align the cushion partition of one cushion wad so that it faces the cup of the other cushion wad Problem can not be supplied continuously does not occur. Briefly speaking, when the shotgun cushion wad according to the present invention is used, there is no problem that the slits between the cushion wads bite and the continuous supply of the cushion wad stops. In other words, if the shotgun cushion wads according to the present invention are used, the continuous supply of the cushion wads will not stop, so that shotgun shots can be manufactured continuously at high speed with an automatic manufacturing apparatus. Become.

  On the other hand, when the shotgun is used, the detonator 4 is ignited when it is struck by the shooter of the shotgun, and the gunpowder 6 is ignited by the ignition of the detonator 4 and starts to burn. Pressure is applied to the bottom of the gunpowder partition 8 and the shotgun cushion wadding 7 pushes open the crimp 16 at the end of the cylindrical casing 5 with the shot 15 in the cup 11 and pops out. Advancing while sliding inside the gun cavity at high speed while withstanding the compression between, and exiting from the muzzle. At this time, the fragile coupling portion 12 provided in the slit 11 of the cup portion 11 of the shotgun cushion wad 7 is formed by the pressure difference between the pressure in the gun cavity and the atmospheric pressure and / or the tip provided in the muzzle. The side wall portion that is broken by contact with the taper (choke) of the constriction and is completely separated by the slit 12 of the cup portion 11 opens laterally in a petal shape. As a result, the cushion wad 7 is decelerated by air resistance. The shot 16 in the cup portion 11 then detaches from the cushion wad 7 and flies. Therefore, since the fragile connecting portion 13 provided in the shotgun cushion wad according to the present invention is broken when the shotgun is fired, it does not adversely affect the performance when using the shotgun. .

  On the outer peripheral edge of the gunpowder partition 8 of the shotgun cushion wads 7 according to the present invention, a depth of 0.1 to 1.0 mm and a width of 0.1 to 1 communicate between the cushion 10 and the gunpowder 6 by gas. One or more longitudinal grooves 9 of 0.0 mm are provided. Such longitudinal grooves are not provided in the conventional cushion guns for shotguns. The number of longitudinal grooves 9 is preferably four. In addition, the gunpowder partition part may have one or a plurality of through holes 14 that communicate between the cushion part and the gunpowder by gas.

  As described above, from the viewpoint of improving the performance of the shell, in order to reduce the leakage of gas generated by the combustion of the gunpowder 6 at the time of launching the bullet, the outer peripheral edge of the gunpowder partition portion 8 of the cushion wad 7 and the cartridge case (tubular shape) The clearance between the casing 5) and the casing 5) is preferably small. However, if this clearance is too small, when the shotgun cushion wad 7 is inserted into the casing (cylindrical casing 5) at high speed in the automatic manufacturing apparatus, The gas at the lower part of the gas is not easily removed, and the cushion 15 is inserted by the compressed gas pressure existing between the gunpowder partition 8 and the gunpowder lower part (powder 6), and then the shot 15 is filled (stored). Before, the cushion wad 7 inserted from the case (tubular casing 5) may pop out.

In order to prevent this, on the outer peripheral edge of the gunpowder partition 8 of the shotgun cushion wads 7 according to the present invention, a depth of 0.1 to 1.0 mm is communicated between the cushion 10 and the gunpowder 6 by gas. In addition, one or a plurality of vertical grooves 9 having a width of 0.1 to 1.0 mm are provided. Since the vertical groove 9 communicates between the cushion portion 10 and the explosive 6 by gas, in the automatic manufacturing apparatus, when the shotgun cushion wad 7 is inserted into the cartridge case (tubular casing 5) at high speed. The cushion wad 7 does not pop out due to the pressure of the compressed gas existing between the gunpowder partition 8 and the lower part of the gunpowder (powder 6). If four longitudinal grooves 9 having a depth of 0.1 to 1.0 mm and a width of 0.1 to 1.0 mm are provided, an automatic manufacturing apparatus for a shotgun mounting 1 having a diameter of approximately 20 mm and a length of 60 mm is provided. In the case of continuous production at a high speed, the cushion wad 7 does not pop out even when the insertion speed of the shotgun cushion wad is 20 cm / second or more.
The depth of the longitudinal groove 9 is preferably 0.3 to 0.7 mm, more preferably about 0.5 mm. The width of the longitudinal groove 9 is preferably about 0.15 to 0.25 mm, more preferably about 0.2 mm.

On the other hand, when the shotgun is used, the detonator 4 is ignited when it is struck by the shooter of the shotgun, and the gunpowder 6 is ignited by the ignition of the detonator 4 and starts to burn. Pressure is applied to the bottom of the gunpowder partition 8 and the shotgun cushion wadding 7 pushes open the crimp 16 at the end of the cylindrical casing 5 with the shot 15 in the cup 11 and pops out. Advancing while sliding inside the gun cavity at high speed while withstanding the compression between, and exiting from the muzzle. At this time, the pressure applied to the bottom of the gunpowder partition 8 of the shotgun cushion wads 7 is normally about 600 to 700 kg / cm ² , and this pressure is scattered in the cartridge case (tubular casing 5) in the automatic manufacturing apparatus. Since the pressure of the compressed gas existing between the gunpowder partition part 8 and the lower part of the gunpowder (powder 6) when the gun cushion wads 7 are inserted at high speed, the cushion part 10 and the gunpowder 6 are significantly higher. Even when four vertical grooves 9 having a depth of 0.1 to 1.0 mm and a width of 0.1 to 1.0 mm that communicate with each other by gas are provided, the performance at the time of use of the shot ammunition is improved. There is no adverse effect. The action of the plurality of through holes 14 that communicate between the cushion part and the explosive that can be provided in the explosive partition part by gas is the same as that of the longitudinal groove 9, and the size thereof can be selected as appropriate. it can.

DESCRIPTION OF SYMBOLS 1 Shotgun loading 2 Base metal 3 Base wad 4 Detonator 5 Tubular casing 6 Gunpowder 7 Shotgun cushion wad 8 Gunpowder partition part 9 Vertical groove of peripheral part of gunpowder partition part 10 Cushion part 11 Cup part 12 Cup part slit 13 Weak connection 14 Cup through hole 15 Shot (metal ball)
16 Crimp

Claims (1)

  A shotgun cushion wad composed of a cup portion for storing shots, a cushion portion, and an explosive partitioning portion, the cup portion having a plurality of slits extending from the opening end portion to the vicinity of the bottom portion, and the opening of the slit In the vicinity of the end portion, there is a fragile connecting portion whose depth is 50 to 90% with respect to the thickness of the side wall of the cup portion, and the cushion portion and the explosive are provided on the outer peripheral edge of the explosive partition portion. The shotgun cushion wad characterized by having a plurality of longitudinal grooves having a depth of 0.3 to 0.7 mm and a width of 0.1 to 1.0 mm communicating with each other by gas.

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