A shaped charge preformed fragment loading tool

Abstract

This invention discloses a pre-fragmented loading fixture for irregularly shaped warheads, comprising an outer fragment mold and an inner fragment mold. The inner fragment mold is fitted inside the outer fragment mold. The space formed by the inner surface of the outer fragment mold and the outer surface of the inner fragment mold constitutes a pre-fragmented loading chamber for loading pre-fragments. The outer fragment mold includes a semi-shell, with a first semi-circular end plate and a second semi-circular end plate of identical structure respectively disposed on the two axial end faces of the semi-shell. The distance from the inner wall of the first semi-circular end plate to the inner wall of the top of the semi-shell is 4-5 mm, and the distance from the outer wall of the first semi-circular end plate to the outer wall of the top of the semi-shell is 8-10 mm. This invention uses the inner fragment mold to compress and arrange the pre-fragments, utilizing compression and gravity to achieve the densest arrangement of pre-fragments in batches, greatly reducing the amount of fragment arrangement work and eliminating the irrelevant mass introduced by glue bonding, thus avoiding the loss of the warhead's destructive capability.

Description

Technical Field

[0001] This invention belongs to the field of missile warhead technology, specifically relating to a pre-fragmentation loading tool for irregularly shaped warheads. Background Technology

[0002] High-explosive fragmentation warheads are a common type of warhead used in air defense and anti-missile weapons. They work by detonating explosive charges to disperse fragments, creating a high-density fragment cloud to kill targets. Due to varying target characteristics in the air, irregularly shaped warheads, such as the drum-shaped fragmentation warhead and the concave focusing warhead, are designed to meet specific damage requirements. These warheads achieve a unique detonation energy release process through special explosive shapes, allowing fragments to disperse according to specific needs, thus enhancing the warhead's destructive capability.

[0003] For irregularly shaped warheads employing pre-fragmented components, the arrangement of these fragments is crucial for achieving destructive effectiveness. The small size and large number of pre-fragmented components make it difficult to form connections that facilitate assembly. Current production and assembly of irregularly shaped warheads face the following main problems: the stress balance of spherical fragments is unstable, resulting in low production efficiency due to manual fragment pasting; the lack of connections between fragments leads to misalignment during transportation, causing fragment "flow" and reducing the warhead's destructive effectiveness; and the use of adhesive to paste fragments introduces excessive irrelevant mass, affecting the overall center of mass of the warhead and negatively impacting the detonation and destruction process, necessitating improvement. Summary of the Invention

[0004] In view of the defects and deficiencies of the existing technology, the purpose of this invention is to provide a pre-fragment loading tool for irregular warheads, so as to solve the technical problems of the inability of fragments to be tightly arranged and the low production efficiency of warheads in the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A pre-fragmented loading tool for an irregularly shaped warhead includes an outer fragment mold and an inner fragment mold. The inner fragment mold is fitted inside the outer fragment mold. The space formed by the inner surface of the outer fragment mold and the outer surface of the inner fragment mold is a pre-fragmented loading chamber, which is used to load pre-fragmented fragments. The outer mold for the fragment includes a semi-shell, and a first semi-circular end plate and a second semi-circular end plate with the same structure are respectively provided on the two axial end faces of the semi-shell. The distance from the inner wall of the first semi-circular end plate to the inner wall of the top of the semi-shell is 4~5mm, and the distance from the outer wall of the first semi-circular end plate to the outer wall of the top of the semi-shell is 8~10mm.

[0006] The present invention also has the following technical features: Specifically, a two-dimensional coordinate system is established with the center of the first semi-circular end plate as the origin, the axial direction of the first semi-circular end plate as the X-axis, and the radial direction of the first circular end plate as the Y-axis. The coordinates of any point on the semi-shell satisfy the following equation: Y=1.011 10 -7 X 4 -3.704 10 -5 X 3 +5.4399 10 -3 X 2 -0.43011X+56.47 .

[0007] Furthermore, side baffles are provided on both circumferential side walls of the semi-shell. The distance between the end face of the side baffle near the inner wall of the semi-shell and the inner wall of the semi-shell is 4~5mm and not less than half the diameter of the pre-made fragment.

[0008] Furthermore, the pre-formed fragments are spherical pre-formed fragments, and the diameter of the spherical pre-formed fragments is 6~8mm.

[0009] Furthermore, the outer and inner molds for the fragments are made of Q235A steel.

[0010] Furthermore, the distance from the inner wall of the first semi-circular end plate to the inner wall of the top of the semi-shell is not less than half the diameter of the pre-made fragment.

[0011] Furthermore, the axial length of the semi-shell is 182~186mm.

[0012] Furthermore, both the first and second semi-circular end plates are provided with multiple threaded holes spaced apart circumferentially.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention, through structural design, forms a pre-fragmented loading fixture for irregularly shaped warheads. The end plates and side baffles restrict the fragment arrangement. By employing an internal mold to compress the pre-fragmented material, the fixture utilizes compression and gravity to achieve the densest possible arrangement of pre-fragmented fragments in batches. This significantly reduces the amount of fragment arrangement work and eliminates the unwanted mass introduced by adhesive bonding, thus preventing the loss of the warhead's destructive capability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the system of the present invention; Figure 2 This is a schematic diagram of the loading application of the system of the present invention.

[0015] The labels in the diagram represent: 1-Outer mold for fragments, 2-Inner mold for fragments, 3-Fragment filling chamber, 4-Pre-made fragments; 11-Half shell, first semi-circular end plate, 13-Second semi-circular end plate, 14-Side baffle.

[0016] The specific content of the present invention will be further explained in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0017] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0018] The terms “upper,” “lower,” “front,” “rear,” “top,” and “bottom” used in this invention refer to orientations or positional relationships only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. “Inner” and “outer” refer to the inner and outer contours of the corresponding components, and the above terms should not be construed as limitations on the invention.

[0019] In this invention, unless otherwise stated, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] Example 1 This embodiment discloses a pre-fragmented loading tool for an irregular warhead, including an outer fragment mold 1 and an inner fragment mold 2. The inner fragment mold 2 is fitted inside the outer fragment mold 1. The space formed by the inner surface of the outer fragment mold 1 and the outer surface of the inner fragment mold 2 is a pre-fragmented loading chamber 3. The fragment loading chamber 3 is used to load pre-fragmented fragments 4. The inner contour of the inner fragment mold 2 matches the warhead charge, and its cross-sectional dimension is half that of the warhead charge. The outer contour of the inner fragment mold 2 can fit with the inner contour of the outer fragment mold 1, compressing the pre-fragmented fragments 4 into the pre-fragmented fragment loading chamber 3, so that the pre-fragmented fragments 4 are evenly distributed in the pre-fragmented fragment loading chamber 3.

[0021] The outer mold for the fragments includes a semi-shell 11, and a first semi-circular end plate 12 and a second semi-circular end plate 13 with the same structure are respectively provided on the two axial end faces of the semi-shell 11. The distance from the inner wall of the first semi-circular end plate 12 to the top inner wall of the semi-shell 11 is 4mm, and the distance from the outer wall of the first semi-circular end plate 12 to the top outer wall of the semi-shell 11 is 8mm.

[0022] The distance from the inner wall of the first semi-circular end plate 13 to the top inner wall of the semi-shell 11 is 4mm, and the distance from the outer wall of the first semi-circular end plate 13 to the top outer wall of the semi-shell 11 is 8mm.

[0023] As a preferred embodiment, a two-dimensional coordinate system is established with the center of the first semi-circular end plate as the origin, the axial direction of the first semi-circular end plate as the X-axis, and the radial direction of the first circular end plate as the Y-axis. The coordinates of any point on the semi-shell satisfy the following equation: Y=1.011 10 -7 X 4 -3.704 10 -5 X 3 +5.4399 10 -3 X 2 -0.43011X+56.47 .

[0024] As a preferred embodiment, the pre-formed fragment 4 is a spherical pre-formed fragment, and the diameter of the spherical pre-formed fragment 4 is 8mm.

[0025] As a preferred embodiment, side baffles 14 are provided on both circumferential sidewalls of the semi-shell 11. The distance between the end face of the side baffle 14 near the inner wall of the semi-shell 11 and the inner wall surface of the semi-shell 11 is 4mm, which is half the diameter of the pre-made fragment, to ensure that the pre-made fragment is blocked and cannot overflow the inner edge.

[0026] As a preferred embodiment, the outer fragment mold 1 and the inner fragment mold 2 are made of Q235A steel. As a preferred embodiment, the distance from the inner wall of the first semi-circular end plate 12 to the top inner wall of the semi-shell 11 is not less than half the diameter of the pre-made fragment 4.

[0027] As a preferred embodiment, the axial length of the semi-shell 11 is 182~186mm.

[0028] As a preferred embodiment, the first semi-circular end plate 12 and the second semi-circular end plate 13 are provided with multiple threaded holes spaced apart along the circumference. With the help of the threaded holes and connecting bolts, two fragment filling fixtures filled with pre-made fragments 4 can be connected together.

[0029] When using this invention: When loading the fragments, the pre-made fragments 4 are loaded into the fragment loading chamber 3, pressure is applied by the fragment inner mold 2, the fragment inner mold 2 is lifted and the pre-made fragments 4 are added to the gaps on both sides, resulting in a fragment loading fixture containing the pre-made fragments 4 closely arranged.

[0030] When assembling the warhead, place two fragmentation loading fixtures filled with pre-formed fragments 4 upwards, and horizontally insert the warhead charge into the inner cavity of one of the fragmentation loading fixtures, ensuring no gaps. Then flip it over so that the other side of the warhead charge is horizontally inserted into the inner cavity of the other fragmentation loading fixture, completing the docking of the two fragmentation loading fixtures, thus completing the assembly.

[0031] The specific technical features described in the above embodiments can be combined in any suitable manner without contradiction, as long as they do not violate the spirit of the present invention, and should also be regarded as the content disclosed by the present invention.

Claims

1. A pre-fragmented loading fixture for an irregularly shaped warhead, comprising an outer fragment mold (1) and an inner fragment mold (2), wherein the inner fragment mold (2) is fitted inside the outer fragment mold (1), characterized in that, The space formed by the inner surface of the outer mold (1) and the outer surface of the inner mold (2) is a pre-made fragment filling chamber (3), which is used to fill pre-made fragments (4). The outer mold (1) for the fragment includes a semi-shell (11), and a first semi-circular end plate (12) and a second semi-circular end plate (13) with the same structure are respectively provided on the two axial end faces of the semi-shell (11). The distance from the inner wall of the first semi-circular end plate (12) to the top inner wall of the semi-shell (11) is 4~5mm, and the distance from the outer wall of the first semi-circular end plate (12) to the top outer wall of the semi-shell (11) is 8~10mm.

2. The pre-fragmentation loading tooling for the irregularly shaped warhead as described in claim 1, characterized in that, With the center of the first semi-circular end plate as the origin, and the axial direction of the first semi-circular end plate as the X-axis and the radial direction of the first circular end plate as the Y-axis, a two-dimensional coordinate system is established. The coordinates of any point on the semi-shell satisfy the following equation: Y=1.011 10 -7 X 4 -3.704 10 -5 X 3 +5.4399 10 -3 X 2 -0.43011X+56.47 。 3. The pre-fragmentation loading tooling for the shaped warhead as described in claim 1, characterized in that, Side baffles (14) are provided on both circumferential side walls of the semi-shell (11). The distance between the end face of the side baffle (14) near the inner wall of the semi-shell (11) and the inner wall of the semi-shell (11) is 4~5mm and not less than half the diameter of the pre-made fragment.

4. The pre-fragmented loading tooling for the shaped warhead as described in claim 1, characterized in that, The pre-formed fragment (4) is a spherical pre-formed fragment, and the diameter of the spherical pre-formed fragment (4) is 6~8mm.

5. The pre-fragmentation loading tooling for the irregularly shaped warhead as described in claim 1, characterized in that, The outer mold (1) and inner mold (2) of the fragment are made of Q235A steel.

6. The pre-fragmentation loading tooling for the shaped warhead as described in claim 1, characterized in that, The distance from the inner wall of the first semi-circular end plate (12) to the inner wall of the top of the semi-shell (11) is not less than half the diameter of the pre-made fragment (4).

7. The pre-fragmentation loading tooling for the shaped warhead as described in claim 1, characterized in that, The axial length of the semi-shell (11) is 182~186mm.

8. The pre-fragmentation loading tooling for the shaped warhead as described in claim 1, characterized in that, Both the first semi-circular end plate (12) and the second semi-circular end plate (13) are provided with multiple threaded holes spaced apart along the circumference.

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