CN116294833A - Shell-free bird-repellent bomb and assembling method thereof - Google Patents

Abstract

The invention discloses a shell-free bird-expelling bullet and an assembling method thereof, belongs to the field of ammunition, and solves the problem of low ignition reliability of the existing bird-expelling bullet. The technical scheme adopted by the invention is as follows: the utility model provides a no shell drives bird bullet, includes body and bottom of the bullet, and the one end of bottom of the bullet sets up the propellant powder chamber and links to each other with the one end of body, and the other end fixed connection ignition piece of bottom of the bullet, ignition piece include the PCB board, and a face of PCB board sets up positive negative pole contact structure, and another face is fixed to be set up the ignition component, and the bottom in propellant powder chamber sets up the ignition hole, and the ignition component is located the ignition hole, and the propellant powder intracavity is full of propellant powder to the ignition component contacts with the propellant powder. After the positive and negative electrode contact structures are electrified, the ignition element forms an ignition arc to ignite the propellant powder. The assembling method of the shell-free bird-repellent bomb is used for assembling the shell-free bird-repellent bomb. The shell-free bird repellent bomb has the advantages of simple structure, single auxiliary element, easy assembly and production and less residue after being launched.

Description

Shell-free bird-repellent bomb and assembling method thereof

Technical Field

The invention belongs to the field of ammunition, and particularly relates to a shell-free bird-expelling bullet and an assembling method thereof.

Background

The firework-type bird repellent bomb is a civil firework product without hard or massive paper residues after being burnt or exploded in the air. In recent years, various pyrotechnic bird-repellent bullets are developed in China, but a plurality of difficulties still exist in designing a bird-repellent bullet which is easy to produce, suitable for multiple automatic firing and high in safety and reliability.

The patent with the bulletin number of CN112902763A and the bulletin day of 2021.06.04 discloses a bird-repellent bullet, the patent with the bulletin number of CN112902764A and the bulletin day of 2021.06.04 discloses a novel bird-repellent bullet, the bird-repellent bullets disclosed in the two patents comprise a bullet shell and a bullet head, the bullet shell is divided into a bullet bottom and a shell, the bullet structure is complex, and residues such as the shell, a spacer and the like exist after the bullet shell is thrown.

The patent with the bulletin number of CN215639088U and the bulletin day of 2022.01.25 discloses a bird repellent bullet and bird repellent device, the bird repellent bullet comprises a lifting part and a protecting part, a partition is arranged in the protecting part, the inner cavity of the protecting part is divided into an upper cavity and a lower cavity by the partition, the lifting part is arranged in the upper cavity, a gunpowder filling cavity is arranged between the lifting part and the partition, gunpowder is filled in the gunpowder filling cavity, an ignition fuse penetrates through the partition, the top end of the ignition fuse enters the gunpowder in the gunpowder filling cavity, the bottom end of the ignition fuse is positioned in the lower cavity, the top end of the lifting part fuse is connected with the lifting part, and the bottom end of the lifting part fuse enters the gunpowder in the gunpowder filling cavity. The mud separating of the projectile body protecting part can pollute the transmitting device in the transmitting process, and is not suitable for multiple automatic transmitting. The ignition fuse is characterized in that an ignition fuse is positioned between two ignition needles, an electric arc of more than 0.5A is generated between the two ignition needles, meanwhile, iron powder at the bottom of the ignition fuse guides the electric arc to the ignition fuse, and under the combined action of the electric arc and the heating of the iron powder, combustion-supporting powder is ignited, and the combustion-supporting powder ignites the ignition fuse. In addition, because the overall dimension of the bird repellent bullet is very small, the interval between two ignition needles is very small, is difficult to guarantee in the production that ignition fuse is accurate to be located between two ignition needles, for example ignition lead is easy to buckle, leads to the ignition lead not to be located the position between two ignition needles, and then leads to the electric arc unable to guide to on the ignition fuse. The ignition fuse is improved in order to solve the problem that the ignition fuse is difficult to ignite in arc ignition, combustion-supporting powder, iron powder and adhesion are added on the basis of the existing common fuse, but the problems of the ignition fuse in position cannot be solved in the measures, and the problem of low ignition reliability still exists.

Disclosure of Invention

The invention firstly provides a shell-free bird-expelling bullet, which solves the problem of low ignition reliability of the existing bird-expelling bullet.

The technical scheme adopted by the invention is as follows: the shell-free bird-expelling bullet comprises a bullet body and a bullet bottom, wherein one end of the bullet bottom is provided with a powder-transmitting cavity and is connected with one end of the bullet body, the other end of the bullet bottom is fixedly connected with an ignition sheet, the ignition sheet comprises a PCB (printed circuit board), one plate surface of the PCB is provided with an anode-cathode contact structure, and the other plate surface of the PCB is fixedly provided with an ignition element which is used for forming an ignition arc after the anode-cathode contact structure is electrified; the bottom of the propellant powder cavity is provided with an ignition hole, the ignition element is positioned in the ignition hole, the propellant powder cavity is filled with propellant powder, and the ignition element is contacted with the propellant powder.

In order to make the end face of the bullet bottom provided with the ignition sheet smooth, further: the end face of the bullet bottom, which is far away from the bullet body, is provided with a counter bore, the shape of the counter bore is consistent with that of the PCB, the depth of the counter bore is consistent with the thickness of the PCB, and the PCB is fixedly arranged in the counter bore.

Further, it is: the PCB is circular, and the circumference of PCB sets up annular ring utmost point, and the centre of a circle department of PCB board sets up the core utmost point, separates by the insulator between ring utmost point and the core utmost point, and positive negative pole contact structure is constituteed to ring utmost point and core.

To avoid moisture ingress into the elastomer, further: the outside of the projectile body and the joints of the projectile body and the projectile body are all covered by wax seals.

Specific: the ignition element is a carbon film bridge, a metal bridge or a heating wire.

Further is: one end of the bullet bottom is provided with a cylindrical connecting cylinder, the bullet body comprises a cylinder body, a partition is arranged in the cylinder body, a fire transmission lead wire is arranged in the partition in a penetrating mode, the distance from the partition to one end of the cylinder body is consistent with the height of the connecting cylinder, the outer diameter of the connecting cylinder is matched with the inner diameter of the cylinder body, the connecting cylinder is inserted into the cylinder body at one end, and the partition and the bullet bottom enclose a closed powder transmitting cavity.

Further, it is: one side of the partition back to the powder-emitting cavity is sequentially provided with explosive effect powder, sawdust and back cover material, one end of the fire transmission lead is positioned in the explosive effect powder, and the other end of the fire transmission lead is positioned in the powder-emitting cavity.

Specific: the propellant is black powder or single or double-base smokeless propellant.

Specific: the spring bottom is made of paper or plastic, and the cylinder is made of paper.

Specific: the main components of the explosive effect medicine are potassium perchlorate, superfine aluminum powder and sulfur.

Specific: the sawdust is wood dust or pearl cotton.

Specific: the back cover material is self-curing mud or foaming glue.

Specific: the partition is mud.

The invention also provides a shell-free bird-repellent bomb assembling method, which solves the problem of low ignition reliability of the existing bird-repellent bomb. The assembling method of the shell-free bird-repellent bomb is used for assembling the shell-free bird-repellent bomb and comprises the following steps of:

s1, manufacturing a cylinder body by adopting a paper roll process, pressing a partition into the cylinder body by adopting a mud pressing head process, fixing a fire transmission lead wire at the center of the cylinder body, and sequentially filling explosive effect medicines, saw dust and a bottom sealing material into the cylinder body to prepare a projectile body;

s2, welding an ignition element on one plate surface of the PCB to obtain an ignition sheet, fixing the ignition sheet to an injection mold, and then injection molding to obtain an integrally formed ignition sheet and a spring bottom;

s3, loading the propellant powder into a propellant powder cavity at the bottom of the bullet, and connecting the bullet body and the bottom of the bullet in a cold-pressing nesting manner.

Further is: the assembling method of the shell-less bird-repellent bomb further comprises the step S4 of wrapping the bomb body by adopting wax seal, and connecting seams of the bomb body and the bomb bottom.

The beneficial effects of the invention are as follows: after the positive and negative electrode contact structures of the ignition sheet are electrified, the ignition element forms an ignition arc, and the ignition element is directly contacted with the propellant powder, so that the propellant powder can be directly ignited, and the ignition reliability is ensured. The end face of the bullet bottom far away from the bullet body is provided with the counter bore, and the ignition sheet is arranged in the counter bore, so that the end face of the bullet bottom provided with the ignition sheet is smooth, and the integral forming of the ignition sheet and the bullet bottom is facilitated. The positive and negative contact structures of the ignition sheet are composed of ring electrodes and core electrodes, so that the shell-free bird-expelling bullet can be in stable contact with the launching device. The outside of the shell body, the bottom of the shell body and the joint of the shell body are all covered by wax, so that moisture can be prevented from entering the shell body, the tightness of the shell-free bird-repellent shell is improved, and the storable time of the shell-free bird-repellent shell is prolonged. The shell-free bird repellent bomb has the advantages of simple structure, single auxiliary element, easy assembly and production and less residue after being launched.

Drawings

FIG. 1 is a schematic view of the structure of the body and bottom of the caseless bird-repellent projectile of the present invention.

Fig. 2 is a schematic view of the bottom surface of the lower layer of the PCB board in the present invention.

Fig. 3 is a schematic view of the top surface of the lower layer of the PCB board in the present invention.

Fig. 4 is a schematic view of the bottom surface of the upper layer of the PCB board in the present invention.

Fig. 5 is a schematic view of the top surface of the upper layer of the PCB board in the present invention.

Reference numerals: the explosion-proof device comprises a shell 1, a barrel 11, a partition 12, a fire transmission lead 13, an explosion-effect medicine 14, sawdust 15, a back cover material 16, a shell bottom 2, a powder-transmitting cavity 21, an ignition hole 22, a counter bore 23, a connecting barrel 24, a PCB 3, a ring pole 31, a core pole 32, a first conductor 33, a second conductor 34, a first contact 35 and a second contact 36.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the shell-less bird-expelling bullet comprises a bullet body 1 and a bullet bottom 2, wherein one end of the bullet bottom 2 is provided with a propellant powder cavity 21, one end of the bullet bottom 2 provided with the propellant powder cavity 21 is connected with one end of the bullet body 1, a closed propellant powder cavity 21 is formed, and the propellant powder cavity 21 is used for filling propellant powder. The cartridge bottom 2 is fixedly connected with an ignition sheet relative to one end of the propellant powder cavity 21, and the ignition sheet is used for generating an ignition arc so as to ignite propellant powder in the propellant powder cavity 21. The ignition piece includes PCB board 3, and a face of PCB board 3 sets up positive negative pole contact structure, and positive negative pole contact structure is used for cooperating with emitter, and another face of PCB board 3 is fixed to set up the element that fires, fires the element and is used for forming the ignition electric arc after being circular telegram to positive negative pole contact structure, and then realizes the purpose of igniting the propellant powder. The bottom of the propellant cavity 21 is provided with an ignition hole 22, the ignition element is located in the ignition hole 22, the propellant cavity 21 is filled with propellant, and the ignition element is in contact with the propellant.

The projectile body 1 comprises a cylinder body 11, wherein a partition 12 is arranged in the cylinder body 11, and the partition 12 can be made of mud. One end of the bullet bottom 2 is provided with a cylindrical connecting cylinder 24, the outer side of the connecting cylinder 24 and the bullet bottom 2 form an internal corner, and the connecting cylinder 24 is used for being connected with the cylinder 11. In order to improve the tightness of the connecting cylinder 24 after being connected with the cylinder 11, the outer diameter of the connecting cylinder 24 is matched with the inner diameter of the cylinder 11, the distance from the partition 12 to one end of the cylinder 11 is identical with the height of the connecting cylinder 24, the connecting cylinder 24 is inserted into one end of the cylinder 11, the connecting cylinder 24 just contacts with the partition 12, and the end part of the cylinder 11 is positioned at the internal corner of the outer side of the connecting cylinder 24. An adhesive may be applied between the connecting cylinder 24 and the cylinder 11. After the receiving cylinder 24 is connected with the cylinder 11, the partition 12 and the warhead 2 enclose a closed medicine-emitting cavity 21.

In order to enable the end face of the bullet bottom 2, where the ignition piece is arranged, to be smooth, the end face of the bullet bottom 2, far away from the bullet body 1, is provided with a counter bore 23, the shape of the counter bore 23 is consistent with that of the PCB 3, the depth of the counter bore 23 is consistent with the thickness of the PCB 3, the counter bore 23 is an ignition piece installation position, and the PCB 3 is fixedly installed in the counter bore 23. For example, the counter bore 23 is a circular blind hole, and the PCB 3 is circular. For another example, the diameter of the PCB 3 is 5-20 mm and the thickness is 0.4-2.0 mm. The counterbore 23 may be located anywhere on the end face of the sole 2 remote from the body 1, the counterbore 23 being generally centrally located on the end face of the sole 2 remote from the body 1. An ignition hole 22 is arranged at the bottom of the counter bore 23, and the ignition hole 22 is communicated with the counter bore 23 and the powder-transmitting cavity 21. The PCB 3 may be adhered and fixed in the counterbore 23 by an adhesive. In order to avoid water entering the elastomer 1, the outside of the elastomer 1 and the joints between the elastomer bottom 2 and the elastomer 1 are all covered by wax seals.

The size of the PCB 3 is smaller, in order to maximize the distance between the two poles of the positive and negative electrode contact structure, referring to fig. 2, the circumference of the PCB 3 is provided with a ring-shaped ring pole 31, the center of the PCB 3 is provided with a core pole 32, the ring pole 31 and the core pole 32 are separated by an insulator, and the ring pole 31 and the core pole 32 form the positive and negative electrode contact structure. Either one of the ring electrode 31 and the core electrode 32 is a positive electrode, and the other is a negative electrode. The ring pole 31 and the core pole 32 directly or indirectly form two very close mounting positions on the other plate surface of the PCB 3, and an ignition element is fixedly mounted between the two mounting positions. For example, the PCB 3 has an upper and a lower circuit structures, the two circuit structures are integrated on the PCB 3, wherein the lower layer is mainly a ring pole 31 and a core pole 32, the bottom surface of the lower layer is a ring pole 31 with a ring shape, and the core pole 32 is located at the center of the ring and is circular, referring to fig. 2, the bottom surface of the lower layer is used for matching with the transmitting device; the top surface of lower floor is annular ring utmost point 31, and core utmost point 32 sets up outside extension, reserves the clearance between extension and the ring utmost point 31, see fig. 3, the top surface of lower floor cooperates with the bottom surface of upper strata. The upper layer of the PCB 3 mainly comprises a first conductor 33 and a second conductor 34, the bottom surface of the upper layer is provided with two strip-shaped first conductors 33 and second conductors 34, the first conductors 33 are contacted with the ring electrode 31, and the second conductors 34 are contacted with the extending part of the core electrode 32, see fig. 4; the top surface of the upper layer, the first and second conductors 33 and 34, are provided with a first and a second contact 35 and 36, respectively, at a position closest to each other, the first and second contacts 35 and 36 being used for mounting the ignition element. For example, the ignition element is a carbon film bridge, a metal bridge, or a heating wire.

As shown in fig. 1, a partition 12 is provided in the cylinder 11 of the projectile body 1, a fire-transmitting lead 13 is inserted into the partition 12, and the partition 12 plays roles of isolating fire and supporting the fire-transmitting lead 13. The side of the partition 12 facing away from the propellant cavity 21 is sequentially provided with an explosion effect medicine 14, sawdust 15 and a back cover material 16, one end of the fire transmission lead 13 is positioned in the explosion effect medicine 14, and the other end of the fire transmission lead 13 is positioned in the propellant.

The shell-less bird repellent bullet of the present invention is illustrated below. The medicine-related part of the shell-less bird-expelling bullet comprises an explosive effect medicine 14 in the bullet body 1 and a propellant powder in the bullet bottom 2. The cylinder 11 of the elastomer 1 can be manufactured through a paper cylinder rolling process, the thickness of the cylinder 11 is 1mm plus or minus 0.1mm, the inner diameter is 24mm plus or minus 0.1mm, and the height is 40-80 mm. The diameter of the partition 12 is 24.2mm plus or minus 0.2mm, the thickness is 7-20 mm, and the distance from one end of the cylinder 11 connected with the bullet bottom 2 is 4-8 mm. The length of the fire transmission lead 13 is 20-40 mm, the diameter is 2.0-4.5 mm, and the burning speed is 60-120 mm/s. The explosive 14 mainly comprises potassium perchlorate, superfine aluminum powder and sulfur. The sawdust 15 is mainly composed of wood dust or pearl cotton. The back cover material 16 is self-curing mud or foam. The propellant powder adopts single-base propellant powder, the main component is nitrocellulose, the drug loading is 0.8-2.0 g, and the molded structure is granular and modular; the propellant can also be propellant for the No. 2 military nitro for fireworks, which mainly comprises black powder with the loading of 2-6 g. The sabot 2 is made of paper or plastic, for example, the sabot 2 is injection molded, so that the sabot 2 and the ignition pad are integrally molded.

The second subject of the invention is a method for assembling a shell-less bird repellent bomb, which is used for assembling the shell-less bird repellent bomb according to the first subject, and comprises the following steps: s1, manufacturing a cylinder 11 by adopting a paper roll process, pressing a partition 12 into the cylinder 11 by adopting a mud pressing head process, fixing a fire transmission lead 13 at the center of the cylinder 11, and sequentially filling an explosive 14, sawdust 15 and a bottom sealing material 16 into the cylinder 11 to obtain the elastomer 1. S2, welding an ignition element on one plate surface of the PCB 3 to obtain an ignition sheet, fixing the ignition sheet on an injection mold, and then injection molding to obtain the integrally formed ignition sheet and the spring bottom 2. S3, loading the propellant powder into a propellant powder cavity 21 of the bottom 2, and cold-pressing and nesting the projectile body 1 and the bottom 2. In order to enhance the storage performance of the caseless bird-repellent bullet, after the bottom 2 and the body 1 are assembled, the body 1, and the connecting seam of the body 1 and the bottom 2 are covered by a wax seal.

Claims (10)

1. The utility model provides a no shell drives bird bullet, includes body (1) and bottom of a bullet (2), and the one end of bottom of a bullet (2) sets up and launches medicine chamber (21) and links to each other with the one end of body (1), its characterized in that: the other end of the spring bottom (2) is fixedly connected with an ignition sheet, the ignition sheet comprises a PCB (3), one plate surface of the PCB (3) is provided with an anode contact structure, the other plate surface of the PCB (3) is fixedly provided with an ignition element, and the ignition element is used for forming an ignition arc after the anode contact structure is electrified; the bottom of the propellant powder cavity (21) is provided with an ignition hole (22), the ignition element is positioned in the ignition hole (22), the propellant powder cavity (21) is filled with propellant powder, and the ignition element is contacted with the propellant powder.

2. The shell-less bird repellent bomb of claim 1, wherein: the end face of the bullet bottom (2) far away from the bullet body (1) is provided with a counter bore (23), the shape of the counter bore (23) is consistent with that of the PCB (3), the depth of the counter bore (23) is consistent with the thickness of the PCB (3), and the PCB (3) is fixedly arranged in the counter bore (23).

3. The shell-less bird repellent bomb of claim 1, wherein: the PCB (3) is circular, the circumference of the PCB (3) is provided with an annular ring pole (31), the center of the PCB (3) is provided with a core pole (32), the ring pole (31) and the core pole (32) are separated by an insulator, and the ring pole (31) and the core pole (32) form an anode and cathode contact structure.

4. The shell-less bird repellent bomb of claim 1, wherein: the outside of the elastomer (1) and the joint between the elastomer bottom (2) and the elastomer (1) are all covered by wax.

5. The shell-less bird repellent bomb of claim 1, wherein: the ignition element is a carbon film bridge, a metal bridge or a heating wire.

6. A shell-less bird repellent bomb according to any one of claims 1 to 5, wherein: one end of the bullet bottom (2) is provided with a cylindrical connecting cylinder (24), the bullet body (1) comprises a cylinder body (11), a partition (12) is arranged in the cylinder body (11), a fire transmission lead (13) is arranged in the partition (12) in a penetrating mode, the distance from the partition (12) to one end of the cylinder body (11) is consistent with the height of the connecting cylinder (24), the outer diameter of the connecting cylinder (24) is matched with the inner diameter of the cylinder body (11), the connecting cylinder (24) is inserted into one end of the cylinder body (11), and the partition (12) and the bullet bottom (2) enclose into a closed medicine emitting cavity (21).

7. The shell-less bird repellent bomb of claim 6, wherein: one side of the partition (12) back to the powder-emitting cavity (21) is sequentially provided with an explosion-effect medicine (14), sawdust (15) and a back cover material (16), one end of the fire-transmitting lead (13) is positioned in the explosion-effect medicine (14), and the other end of the fire-transmitting lead (13) is positioned in the powder-emitting.

8. The shell-less bird repellent bomb of claim 7, wherein: the shell-less bird repellent bullet at least meets one of the following six items: (1) the propellant is black powder or single or double-base smokeless propellant; (2) the spring bottom (2) is made of paper or plastic, and the cylinder (11) is made of paper; (3) the main components of the explosive effect medicine (14) are potassium perchlorate, superfine aluminum powder and sulfur; (4) the sawdust (15) is wood dust or pearl cotton; (5) the back cover material (16) is self-curing mud or foaming glue; (6) the partition (12) is mud-proof.

9. The assembling method of the shell-free bird-expelling bullet is characterized by comprising the following steps of: a caseless bird repellent bullet for assembling any of the preceding claims 1 to 8, comprising the steps of:

s1, manufacturing a cylinder body (11) by adopting a paper roll process, pressing a partition (12) into the cylinder body (11) through a mud pressing head process, fixing a fire transmission lead (13) at the center of the cylinder body (11), and sequentially filling explosive effect medicines (14), sawdust (15) and a back cover material (16) into the cylinder body (11) to prepare the elastomer (1);

s2, welding an ignition element on one plate surface of the PCB (3) to obtain an ignition sheet, fixing the ignition sheet to an injection mold, and then injection molding to obtain an integrally formed ignition sheet and a spring bottom (2);

s3, loading the propellant powder into a propellant powder cavity (21) of the warhead (2), and cold-pressing and nesting the warhead (2) with the warhead (1).

10. The method of assembling a shell-less bird repellent cartridge of claim 9, wherein: the assembling method of the shell-less bird-repellent bomb further comprises the step S4 of wrapping the bomb body (1) by adopting wax seal, and connecting joints of the bomb body (1) and the bomb bottom (2).

Images