A bonding device for processing large modules of fragments for staged strike targets.

Abstract

This invention provides a bonding device for processing large fragment modules for staged target engagement. The device includes an outer shell, a cover plate, and a rotating base. Within the outer shell, an inner shell, an inner liner, and an outer liner are coaxially arranged from the inside out. Small-diameter fragments are filled between the inner shell and the inner liner, medium-diameter fragments between the inner liner and the outer liner, and large-diameter fragments between the outer liner and the outer shell. An adhesive is filled within the inner shell. Multiple through holes are provided on the inner shell, inner liner, and outer liner, allowing the adhesive to pass through these holes and sequentially enter the small-diameter fragment loading chamber, the medium-diameter fragment loading chamber, and the large-diameter fragment loading chamber. By using this invention to bond the fragments, the resulting large fragment module can engage the target in stages, maximizing the destructive effect of the fragmentation warhead.

Description

Technical Field

[0001] This invention belongs to the technical field of bonding devices, and relates to a fragment bonding device, particularly a bonding device for processing large modules of fragments for step-by-step impact targets. Background Technology

[0002] The basic components of a fragmentation warhead are explosive and fragments. When the explosive detonates, it imparts high velocity to the fragments. These high-speed fragments directly impact the target and kill it using their kinetic energy. Because fragments possess advantages such as high density, high velocity, and strong armor-piercing capability, they are increasingly widely used as a lethal element in fragmentation munitions. Fragmentation warheads have wide applications in air defense, anti-radiation, and area-effect warfare. The effectiveness of fragments in killing a target is closely related to their arrangement; therefore, fragmentation application technology is a key technology in designing fragmentation warheads.

[0003] Currently, spherical fragments are mainly used in warheads through bonding molding. One reported fragment bonding molding process involves mixing fragments and a binder in a pre-formed mold, followed by sintering in a furnace. The bonded fragment module is then removed from the mold and inserted into the warhead cavity, completing the assembly of the bonded fragment module with the warhead.

[0004] The main drawbacks of the existing technology are as follows: For large fragment modules of the same volume, if the fragment diameter is large, the number of fragments will be fewer, but the fragment velocity decays slowly, resulting in greater fragment kinetic energy; if the fragment diameter is small, the number of fragments will be more, but the fragment velocity decays quickly, resulting in lower fragment kinetic energy. Typically, targets have a relatively hard outer shell to prevent fragment impact. Large-diameter fragments can break through the target's outer shell, but there are not enough fragments to sufficiently impact the target's interior. Small-diameter fragments cannot break through the target's outer shell and therefore cannot cause damage to the target. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a bonding device for processing large modules of fragmented warheads used in step-by-step strikes, thereby solving the technical problem that the destructive effect of fragmented warheads in existing technologies needs to be further improved.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A bonding device for processing large modules of fragments for step-by-step strike targets includes an outer shell, both the top and bottom of which are open. A cover plate is detachably installed on the top of the outer shell, completely closing the top of the outer shell. The bottom of the outer shell is detachably installed on a rotating base, the top surface of which completely closes the bottom of the outer shell.

[0008] The space enclosed by the outer shell, cover plate, and top surface of the rotating base is a centrifuge chamber. Inside the centrifuge chamber, an inner shell, an inner liner, and an outer liner are arranged coaxially from the inside to the outside. The top end of the outer liner is connected to the cover plate, and the bottom end of the outer liner is connected to the top surface of the rotating base. The top end of the inner liner is connected to the cover plate, and the bottom end of the inner liner is connected to the top surface of the rotating base. The top end of the inner shell is connected to the cover plate, and the bottom end of the inner shell is connected to the top surface of the rotating base.

[0009] The space between the inner shell and the inner liner is a small-diameter fragment filling chamber, which is used to fill small-diameter fragments; the space between the inner liner and the outer liner is a medium-diameter fragment filling chamber, which is used to fill medium-diameter fragments; and the space between the outer liner and the outer shell is a large-diameter fragment filling chamber, which is used to fill large-diameter fragments.

[0010] The space enclosed by the top surfaces of the inner shell, the cover plate, and the rotating base is a binder filling chamber, which is used to fill the binder. The inner shell has multiple inner shell through holes along the radial direction, the inner liner has multiple inner liner through holes, and the outer liner has multiple outer liner through holes. The binder can pass through the inner shell through holes, the inner liner through holes, and the outer liner through holes and then enter the small-diameter fragment filling chamber, the medium-diameter fragment filling chamber, and the large-diameter fragment filling chamber in sequence.

[0011] The present invention also includes the following technical features:

[0012] The outer liner has a thickness of 1.6–1.9 mm; the inner liner has a thickness of 1.6–1.9 mm.

[0013] The small-diameter fragments, medium-diameter fragments, and large-diameter fragments are all spherical structures. The small-diameter fragments have a diameter of 3 mm, the medium-diameter fragments have a diameter of 10 mm, and the large-diameter fragments have a diameter of 25 mm.

[0014] The outer shell and the cover plate are connected by bolts; the outer shell and the rotating base are connected by bolts.

[0015] The through holes of the inner shell are evenly distributed circumferentially from top to bottom on the inner shell, and the cross-section of the through holes of the inner shell is circular.

[0016] The inner lining through holes are evenly distributed circumferentially from top to bottom on the inner lining, and the inner lining through holes are circular holes.

[0017] The outer lining through holes are evenly distributed circumferentially from top to bottom on the outer lining, and the outer lining through holes are circular holes.

[0018] The bonding device used for processing large modules of fragments for step-by-step strike targets rotates at a speed of 15 revolutions per second.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] The large fragment module formed by bonding fragments using this invention has a gradually decreasing diameter from the outside in. Larger diameter fragments have a higher velocity and arrive at the target first, cracking its outer shell. Medium-diameter fragments have a moderate velocity, arrive later, and their increased number further impacts the already cracked outer shell, removing it and exposing the internal target. Smallest diameter fragments have the slowest velocity, arrive last, and are the most numerous, providing the most thorough impact to the exposed target. As the above analysis shows, by bonding fragments using this invention, the resulting large fragment module can strike the target in stages, maximizing the destructive effect of the fragmentation warhead. Attached Figure Description

[0021] Figure 1 This is a bonding device used for processing large modules of fragments for step-by-step strike targets.

[0022] The meanings of the labels in the diagram are as follows: 1-outer shell, 2-cover plate, 3-rotating base, 4-inner shell, 5-inner liner, 6-outer liner, 7-small diameter fragment, 8-medium diameter fragment, 9-large diameter fragment, 10-adhesive filling chamber, 11-through hole of inner shell, 12-bolt.

[0023] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, all components and materials in this invention are those known in the art.

[0025] 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. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0026] Example:

[0027] This embodiment provides a bonding device for processing large modules of fragments used in staged strike targets, such as... Figure 1As shown, it includes an outer shell 1, which is a hollow frustum structure and a rotating body. The diameter of the top end of the outer shell 1 is larger than the diameter of the bottom end. Both the top and bottom ends of the outer shell 1 are open. A cover plate 2 is detachably installed on the top end of the outer shell 1, which completely closes the top end of the outer shell 1. The cover plate 2 is a circular plate structure and a rotating body. The axis of rotation of the cover plate 2 coincides with the axis of rotation of the rotating base 3. The bottom end of the outer shell 1 is detachably installed on the rotating base 3. The top surface of the rotating base 3 is a circular plate structure and a rotating body. The main body of the rotating base 3 is a circular boss. The top surface of the rotating base 3 completely closes the bottom end of the outer shell 1.

[0028] like Figure 1 As shown, the space enclosed by the outer shell 1, the cover plate 2, and the top surface of the rotating base 3 is a centrifuge chamber. Inside the centrifuge chamber, from the inside out, are coaxially arranged an inner shell 4, an inner liner 5, and an outer liner 6. The outer liner 6 is a hollow frustum structure and a rotating body; the diameter of the top end of the outer liner 6 is larger than the diameter of the bottom end. The top end of the outer liner 6 is connected to the cover plate 2, and the bottom end of the outer liner 6 is connected to the top surface of the rotating base 3. The inner liner 5 is a hollow frustum structure and a rotating body; the diameter of the top end of the inner liner 5 is larger than the diameter of the bottom end. The top end of the inner liner 5 is connected to the cover plate 2, and the bottom end of the inner liner 5 is connected to the top surface of the rotating base 3. The inner shell 4 is a hollow frustum structure and a rotating body; the diameter of the top end of the inner shell 4 is larger than the diameter of the bottom end. The top end of the inner shell 4 is connected to the cover plate 2, and the bottom end of the inner shell 4 is connected to the top surface of the rotating base 3.

[0029] like Figure 1 As shown, the space between the inner shell 4 and the inner liner 5 is a small-diameter fragment filling chamber, which is used to fill small-diameter fragments 7; the space between the inner liner 5 and the outer liner 6 is a medium-diameter fragment filling chamber, which is used to fill medium-diameter fragments 8; the space between the outer liner 6 and the outer shell 1 is a large-diameter fragment filling chamber, which is used to fill large-diameter fragments 9.

[0030] like Figure 1 As shown, the space enclosed by the top surfaces of the inner shell 4, the cover plate 2, and the rotating base 3 is the adhesive filling chamber 10, which is used to fill the adhesive. The inner shell 4 has multiple inner shell through holes 11 along the radial direction, the inner liner 5 has multiple inner liner through holes, and the outer liner 6 has multiple outer liner through holes. The adhesive can pass through the inner shell through holes 11, the inner liner through holes, and the outer liner through holes and enter the small diameter fragment filling chamber, the medium diameter fragment filling chamber, and the large diameter fragment filling chamber in sequence.

[0031] In this embodiment, the rotating base 3 adopts a conventional rotating base known in the prior art. The axis of rotation of the rotating base 3 is perpendicular to the ground. The circular boss of the rotating base 3 is installed on the rotating platform. The rotating platform can drive the rotating base 3 to rotate around its axis of rotation, thereby driving the outer shell 1, the cover plate 2 and the top surface of the rotating base 3 to rotate as a whole.

[0032] As a specific embodiment, the thickness of both the outer liner 6 and the inner liner 5 is 1.6 mm.

[0033] As one specific solution in this embodiment, such as Figure 1 As shown, the outer shell 1 and the cover plate 2 are connected by bolts 12; the outer shell 1 and the rotating base 3 are connected by bolts 12.

[0034] As a specific embodiment, the through holes 11 of the inner shell are evenly distributed circumferentially from top to bottom on the inner shell 4, and the cross-section of the through holes 11 of the inner shell is circular.

[0035] As a specific embodiment, the inner lining through holes are evenly distributed on the inner lining 5 from top to bottom in a circumferential direction, and the inner lining through holes are circular holes.

[0036] As a specific embodiment, the outer lining through holes are evenly distributed on the outer lining 6 from top to bottom in a circumferential direction, and the outer lining through holes are circular holes.

[0037] As a specific embodiment, the small-diameter fragment 7, the medium-diameter fragment 8, and the large-diameter fragment 9 are all spherical structures. The small-diameter fragment 7 has a diameter of 3 mm, the medium-diameter fragment 8 has a diameter of 10 mm, and the large-diameter fragment 9 has a diameter of 25 mm.

[0038] The method of using the bonding device for processing large modules of fragments for step-by-step impact targets according to the present invention specifically includes the following steps:

[0039] Step 1: Device assembly, fragment loading, and binder filling:

[0040] First, the rotating base 3 and the inner shell 4 are assembled; then the rotating base 3 and the inner liner 5 are assembled, and a small-diameter fragment 7 is inserted between the inner shell 4 and the inner liner 5; next, the rotating base 3 and the outer liner 6 are assembled, and a medium-diameter fragment 8 is inserted between the inner liner 5 and the outer liner 6; then the rotating base 3 and the outer shell 1 are assembled, and a large-diameter fragment 9 is inserted between the outer liner 6 and the outer shell 1; finally, adhesive is filled into the adhesive filling chamber 10 of the inner shell 4, and the cover plate 2 is assembled with the outer shell 1 and the inner shell 4.

[0041] Step 2, Device Operation:

[0042] Install the rotating base 3 onto the rotating platform, start the rotating platform, and rotate at a speed of 15 revolutions per second. Under the action of centrifugal force, the adhesive inside the inner shell 4 tends to move outward. The adhesive passes through the inner shell through hole 11 and enters the small diameter fragment filling chamber. Subsequently, the adhesive passes through the inner lining through hole and enters the medium diameter fragment filling chamber. Finally, the adhesive passes through the outer lining through hole and enters the large diameter fragment filling chamber. After the adhesive solidifies, stop rotating the rotating base 3.

[0043] Step 3, assembly of the fragmentation module and the warhead:

[0044] Remove the rotating base 3, cover plate 2, outer shell 1, and inner shell 4. Then, install the large fragment module, which is made of small-diameter fragments 7, outer liner 6, medium-diameter fragments 8, inner liner 5, and large-diameter fragments 9 bonded together, into the inner cavity of the warhead. This completes the assembly of the large fragment module with the warhead. The large fragment module is capable of striking the target in stages.

[0045] The working principle of the bonding device for processing large modules of fragments from a multi-stage impact target according to the present invention is as follows:

[0046] This invention divides the fragments into three layers from the outside in, with the fragment diameter gradually decreasing from the outside in. This design ensures that the outermost fragments, due to their slow velocity decay and large mass, possess sufficient speed and kinetic energy to powerfully strike and fracture the target's outer shell. The middle fragments, with moderate speed and kinetic energy but greater number, further shatter and remove the fractured target's outer shell. The innermost fragments, with the slowest speed and lowest kinetic energy but the largest number, can still strike the target even with low kinetic energy since the outer shell has been removed, while their greater number ensures a more thorough impact, thus achieving an optimized attack effect. This design allows large, medium, and small fragments to strike the target at different speeds. Compared to fragments of the same size, the total impact time is increased from the largest fragment arriving first to the smallest fragment arriving last, increasing the probability of hitting a moving target. This invention improves the destructive effect of the fragments by striking the target in three steps.

[0047] After the rotating base 3 rotates, it generates a centrifugal force perpendicular to the axis outward. Under the action of centrifugal force, the adhesive sequentially enters the storage space of all fragments, squeezing out the air between the fragments. Then, the fragments are firmly bonded together. Since the fragments are divided into three layers from the outside in, the gaps between each layer are reduced. If the adhesive is poured in from top to bottom as in the past, the gaps are too narrow, which easily leads to poor adhesive flow and air trapped between the fragments, preventing them from being firmly bonded. Therefore, this invention uses centrifugal force to drive the flow of the adhesive.

[0048] If the rotation speed is too low, the centrifugal force is insufficient, and the adhesive cannot completely expel the air between the fragments, resulting in weak adhesion between the fragments and preventing them from being bound together as a single piece. If the rotation speed is too high, the centrifugal force is too great, and the centrifugal force of the fragments will crush the outer liner 6 and the inner liner 5, preventing the fragments from being separated into three layers as designed, thus failing to achieve the desired effect of the invention. Experiments have shown that at a rotation speed of 15 rpm, the outer liner 6 and the inner liner 5 are not deformed by the fragments, and the adhesive can fully enter the fragment storage space, firmly bonding the fragments.

[0049] The outer liner 6 and inner liner 5 separate the fragments, thus achieving the effect of fragment diameter decreasing from the outside to the inside. If the outer liner 6 and inner liner 5 are too thick, they occupy the space for fragment placement, reducing the number of fragments, the number of damaging elements, and the overall impact of the fragments. If the outer liner 6 and inner liner 5 are too thin, their strength and rigidity are insufficient, making them too easily deformed under the compression of the fragments, unable to divide the fragments into three uniformly thick parts. Once the outer liner 6 and inner liner 5 deform, the distribution of fragments from the outside to the inside will be uncontrollable, failing to meet the design requirements. Through some theoretical calculations, a collective discussion with experienced personnel, and by breaking down the above problems and conducting separate experimental evaluations for each module, it was ultimately concluded that when the thickness of both the outer liner 6 and inner liner 5 is 1.6–1.9 mm, all the above problems can be avoided, the design advantages of the invention can be fully realized, the function of the invention can be fully realized, and the problem can be completely solved using the invention.

[0050] Verification of the effect of Example 1:

[0051] This embodiment describes a bonding device for fabricating large modules of fragments for multi-stage target engagement. Following the steps outlined above, spherical fragments are bonded together to form modules, which are then inserted into the warhead casing. Explosives are subsequently loaded, and an explosion experiment is conducted, comparing the results with those using fragments of a single diameter. The fragment modules bonded using this invention, after explosion, demonstrate a greater impact on the target than fragments of any single diameter. These results demonstrate the effectiveness of this invention.

[0052] Example 2:

[0053] This embodiment provides an adhesive device for processing large modules of fragments for step-by-step strike targets. The specific structure of this device is basically the same as that of Embodiment 1, except that in this embodiment, the thickness of both the outer liner 6 and the inner liner 5 is 1.9 mm.

[0054] Verification of the effect of Example 2:

[0055] This embodiment describes a bonding device for fabricating large modules of fragments for multi-stage target engagement. Following the steps outlined above, spherical fragments are bonded together to form modules, which are then inserted into the warhead casing. Explosives are subsequently loaded, and an explosion experiment is conducted, comparing the results with those using fragments of a single diameter. The fragment modules bonded using this invention, after explosion, demonstrate a greater impact on the target than fragments of any single diameter. These results demonstrate the effectiveness of this invention.

Claims

1. A bonding apparatus for processing a stepped strike target fragment large module, characterized by, Includes an outer shell (1), the top and bottom of the outer shell (1) are open, the top of the outer shell (1) is detachably fitted with a cover plate (2), the cover plate (2) completely closes the top of the outer shell (1); the bottom of the outer shell (1) is detachably fitted on a rotating base (3), the top surface of the rotating base (3) completely closes the bottom of the outer shell (1); The space enclosed by the top surfaces of the outer shell (1), the cover plate (2), and the rotating base (3) is a centrifuge chamber. Inside the centrifuge chamber, from the inside out, are arranged coaxially with an inner shell (4), an inner liner (5), and an outer liner (6). The top end of the outer liner (6) is connected to the cover plate (2), and the bottom end of the outer liner (6) is connected to the top surface of the rotating base (3). The top end of the inner liner (5) is connected to the cover plate (2), and the bottom end of the inner liner (5) is connected to the top surface of the rotating base (3). The top end of the inner shell (4) is connected to the cover plate (2), and the bottom end of the inner shell (4) is connected to the top surface of the rotating base (3). The space between the inner shell (4) and the inner liner (5) is a small-diameter fragment filling chamber, which is used to fill small-diameter fragments (7); the space between the inner liner (5) and the outer liner (6) is a medium-diameter fragment filling chamber, which is used to fill medium-diameter fragments (8); the space between the outer liner (6) and the outer shell (1) is a large-diameter fragment filling chamber, which is used to fill large-diameter fragments (9). The space enclosed by the top surfaces of the inner shell (4), the cover plate (2) and the rotating base (3) is the adhesive filling chamber (10), which is used to fill adhesive. The inner shell (4) has multiple inner shell through holes (11) along the radial direction, the inner liner (5) has multiple inner liner through holes, and the outer liner (6) has multiple outer liner through holes. The adhesive can pass through the inner shell through holes (11), the inner liner through holes and the outer liner through holes and enter the small diameter fragment filling chamber, the medium diameter fragment filling chamber and the large diameter fragment filling chamber in sequence.

2. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The outer liner (6) has a thickness of 1.6 to 1.9 mm; the inner liner (5) has a thickness of 1.6 to 1.9 mm.

3. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The small-diameter fragment (7), medium-diameter fragment (8) and large-diameter fragment (9) are all spherical structures. The diameter of the small-diameter fragment (7) is 3 mm, the diameter of the medium-diameter fragment (8) is 10 mm, and the diameter of the large-diameter fragment (9) is 25 mm.

4. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The outer shell (1) and the cover plate (2) are connected by bolts (12); the outer shell (1) and the rotating base (3) are connected by bolts (12).

5. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The inner shell through holes (11) are evenly distributed circumferentially from top to bottom on the inner shell (4), and the cross-section of the inner shell through holes (11) is circular.

6. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The inner lining through holes are evenly distributed circumferentially from top to bottom on the inner lining (5), and the inner lining through holes are circular holes.

7. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The outer lining through holes are evenly distributed circumferentially from top to bottom on the outer lining (6), and the outer lining through holes are circular holes.

8. The bonding device for processing large modules of fragments used in step-by-step target impact as described in claim 1, characterized in that, The bonding device used for processing large modules of fragments for step-by-step strike targets rotates at a speed of 15 revolutions per second.

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