An apparatus for manufacturing a stress relief zone for a press charged grain

Abstract

The application discloses a device for manufacturing stress release area of pressed charge column, and proposes a theory of "integration and multi-module" for the pressed charge column, namely, the pressed charge column is integrated as a whole, but the interior of the pressed charge column is uniform two modules, each module has adjacent boundary, and when temperature changes sharply, the stress generated in the interior of the pressed charge column due to temperature change can be released at the weak position of the module boundary. The space in the die barrel is evenly divided into two parts by a charge dividing baffle, so that the volumes of the charge powders poured into the two sides of the die barrel are the same; in this way, when the pressed charge column is formed, the pressed charge column is also a complete whole, so that the assembly is facilitated, and when the warhead is subjected to temperature change, even if the pressed charge column is cracked, the pressed charge column is also broken into uniform several equal parts from the prefabricated position, so that the center of mass and the state of the warhead are not affected, and the effect similar to that of a turned and milled charge column is achieved. In addition, the wax invasion charge dividing pad plays a role in blocking adhesion of the pressed charge column in the interior of the pressed charge column, so that the safety is further ensured.

Description

Technical Field

[0001] This invention belongs to the field of warhead loading technology, and specifically relates to an apparatus for manufacturing stress relief zones in press-loaded propellant columns. Background Technology

[0002] Due to their uniform density, high detonation velocity, high overpressure, and ease of assembly, press-loaded propellant charges are widely used in various warheads. As modern warfare demands, warhead propellant charges are increasing in size and weight, making the production process more difficult and leading to more problems. Because the storage and operating conditions of warheads are extremely demanding, press-loaded propellant charges must ensure absolute stability, preventing combustion and explosion, and also preventing cracking due to temperature changes. Otherwise, it would seriously affect the stability of missile flight and even threaten the lives of personnel.

[0003] Existing press-load propellant loading devices cannot completely prevent changes in external temperature. Due to thermal expansion and contraction, the propellant is at risk of cracking. If the temperature changes drastically, the accumulation of internal stress significantly increases the probability of cracking, and the severity and unpredictability of the cracking will also increase. This can seriously affect the center of gravity of the entire warhead and severely impact flight performance. Therefore, solving the problem of propellant cracking due to temperature changes and avoiding safety hazards has become an important and unavoidable issue that must be properly addressed. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus for manufacturing a stress relief zone for press-loaded propellant columns, so as to solve the problem that propellant columns manufactured by existing press-loaded propellant column devices are prone to cracking due to temperature changes, leading to safety hazards.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An apparatus for manufacturing a stress relief zone for press-filled propellant cartridges includes a propellant cartridge mold barrel, wherein a central column is vertically arranged at the center of the interior of the propellant cartridge mold barrel; and a dispensing device is arranged inside the propellant cartridge mold barrel.

[0007] The dispensing device includes four rectangular dispensing baffles vertically arranged inside the medicine column mold barrel. The dispensing baffles are arranged in pairs on opposite sides of the central column, dividing the inside of the medicine column mold barrel into two parts of equal volume. The upper part of the dispensing baffles is not higher than or extends beyond the upper end of the medicine column mold barrel, and the height of the dispensing baffles is at least a multiple of the required height of the formed medicine column.

[0008] There is a gap between the two parallel dispensing baffles, which can accommodate two layers of wax-impregnated dispensing pads. Each of the two parallel dispensing baffles has a layer of wax-impregnated dispensing pad on the side closest to it.

[0009] The dispensing baffles located on opposite sides of the central column are fixed together by a connecting device.

[0010] The present invention also has the following features:

[0011] Furthermore, the drug cartridge mold includes a mold base;

[0012] The mold base has an installation groove in the middle, and the central column is installed inside the installation groove; the mold base is coaxially connected to the mold body, and the upper part of the mold body is coaxially connected to a guide cylinder with the same inner diameter.

[0013] Furthermore, the front of all the aforementioned dispensing baffles serves as the working surface for connecting the wax-impregnated dispensing pad, while the back serves as the connecting surface for connecting the connecting device.

[0014] The connecting device includes two upper connecting rods and two lower connecting rods, both of which are semi-circular; the upper and lower parts of the back of all the dispensing baffles are respectively provided with upper connecting plates and lower connecting plates corresponding to the upper and lower connecting rods.

[0015] Bolt holes are provided at both ends of the upper connecting rod and the lower connecting rod, and at corresponding positions on the upper connecting plate and the lower connecting plate;

[0016] The upper connecting rod can simultaneously screw onto two dispensing baffles located on the opposite side of the central column; the lower connecting rod can simultaneously screw onto two dispensing baffles located on the opposite side of the central column.

[0017] Furthermore, when any of the aforementioned upper or lower connecting rods is screwed to its corresponding upper or lower connecting plate, the connecting bolts do not protrude from the front of the corresponding dispensing baffle.

[0018] Furthermore, the upper connecting rod and the lower connecting rod have the same shape and specifications, and their radii are both equal to half the inner diameter of the drug cartridge mold barrel.

[0019] Furthermore, each of the lower connecting rods is connected to at least one support rod on its lower wall, and the length of the support rod is equal to the distance from the lower wall of the lower connecting rod to the base of the mold barrel.

[0020] Furthermore, each of the aforementioned dispensing baffles is connected to at least one handle on its upper part, and the surface of all the handles is provided with a textured structure that can increase friction.

[0021] Furthermore, the lower connecting rod and the support rod are connected by a screw connection;

[0022] The dispensing baffle and the handle are connected by screws.

[0023] Furthermore, all of the aforementioned dispensing baffles are provided with baffle gap fixing clips on their sidewalls, and these baffle gap fixing clips protrude toward the working surface of the dispensing baffle.

[0024] The gap fixing clips of two adjacent baffles can be spliced ​​together and fixedly connected, so that a gap can be created between the two dispensing baffles on the same side to clamp the wax-impregnated dispensing pad.

[0025] Furthermore, the gap between the two dispensing baffles 3 is 2mm;

[0026] The dispensing baffle 3 has a height of 300mm and a width of 179mm;

[0027] The length of the support rod 503 is 75-95mm;

[0028] The outer diameter of the central column 2 is 40mm, and the inner diameter of the drug cartridge mold 1 is 400mm;

[0029] The upper connecting plate 301 is located 20mm above the corresponding dispensing baffle 3.

[0030] Compared with the prior art, the present invention has the following technical effects:

[0031] (I) The apparatus of the present invention for manufacturing stress relief zones of press-loaded propellant columns proposes a theory of "integrated, multi-module" press-loaded propellant columns. This means the propellant column is pressed into a single unit, but internally consists of two uniform modules, each with adjacent boundaries. When temperature changes drastically, the stress generated within the propellant column due to temperature variations can be released at the weak points of the module boundaries. A distribution baffle evenly divides the space within the mold barrel in two, ensuring that the volume of powder poured into both sides of the mold barrel is the same. In this way, the propellant column is also a complete unit during pressing, which not only facilitates assembly but also ensures that even if the propellant column cracks due to temperature changes in the warhead, it will break into several uniform parts from the pre-formed location, without affecting the warhead's center of gravity and state, achieving an effect similar to milling and turning propellant columns. Furthermore, the wax-impregnated distribution pad inside the propellant column prevents adhesion, further ensuring safety.

[0032] (II) The apparatus of the present invention for manufacturing stress relief zones of press-filled propellant columns has connecting rods installed on the upper and lower parts of the dispensing baffle. The connecting rods connect the dispensing baffles on the same side into a whole, enhancing the overall stability of the apparatus. The lower baffle connecting rod is connected to a support rod by screwing. The support rod supports the entire fixture to ensure that the dispensing baffle does not tilt to the sides, further enhancing stability and making it suitable for large-scale industrial use and promotion. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view of the apparatus for manufacturing the stress relief zone of a press-loaded propellant column according to the present invention;

[0034] Figure 2 This is a top view of the apparatus for manufacturing the stress relief zone of a press-loaded propellant column according to the present invention;

[0035] Figure 3 This is a schematic diagram of the dispensing baffle structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the upper connecting rod structure of the present invention;

[0037] Figure 5 This is a CT image of a drug column in one embodiment of the present invention.

[0038] Figure 6 This is a schematic diagram of the baffle gap fixing clip structure of the present invention.

[0039] The meanings of the labels in the diagram are as follows:

[0040] 1. Drug cartridge mold; 2. Central column; 3. Drug dispensing baffle; 4. Wax-impregnated drug dispensing pad; 5. Connecting device; 6. Handle;

[0041] 101. Mold base; 102. Mold body; 103. Guide tube; 301. Upper connecting plate; 302. Lower connecting plate; 501. Upper connecting rod; 502. Lower connecting rod; 503. Support rod. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, all components in this invention are known in the prior art. For example, the handle uses a commonly known handle.

[0043] 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.

[0044] like Figure 1 and Figure 2 As shown, an apparatus for manufacturing a stress relief zone for press-filled propellant cartridges includes a propellant cartridge mold 1, with a central column 2 vertically arranged at the center of the interior of the propellant cartridge mold 1; and a dispensing device is arranged inside the propellant cartridge mold 1.

[0045] The dispensing device includes four rectangular vertical dispensing baffles 3 arranged inside the medicine column mold barrel 1. The dispensing baffles 3 are arranged in pairs on opposite sides of the central column 2, dividing the inside of the medicine column mold barrel 1 into two parts of equal volume. The upper part of the dispensing baffles 3 does not extend outside the medicine column mold barrel 1, and the height of the dispensing baffles 3 is at least 3 times the height of the formed medicine column.

[0046] A gap is left between the two parallel drug dispensing baffles 3, which can accommodate two layers of wax-impregnated drug dispensing pads 4. A layer of wax-impregnated drug dispensing pad 4 is provided on the side of the two parallel drug dispensing baffles 3 that are close to each other.

[0047] The dispensing baffles 3 located on opposite sides of the central column 2 are fixed together by a connecting device 5.

[0048] The device for manufacturing stress relief zones in press-loaded propellant columns of this invention proposes a "one-piece, multi-module" theory for press-loaded propellant columns. This means the propellant column is pressed into a single unit, but internally consists of two uniform modules. Each module has adjacent boundaries, allowing stress generated by temperature changes within the propellant column to be released at the weak points of the module boundaries. A distribution baffle 3 evenly divides the space within the propellant column mold 1 in two, ensuring that the volume of powder poured into both sides of the mold 1 is the same. This results in a complete unit during propellant column pressing, facilitating assembly. Furthermore, even if the propellant column cracks due to temperature changes in the warhead, it will break into several uniform parts from the pre-formed location, without affecting the warhead's center of gravity or state, achieving an effect similar to milling and turning propellant columns. In addition, a wax-impregnated distribution pad 4 prevents propellant column adhesion within the column, further ensuring safety. This device is simple in principle, robust in structure, easy to assemble and disassemble, reusable, highly practical, and has high production efficiency.

[0049] As a preferred embodiment, the drug cartridge mold 1 includes a mold base 101;

[0050] The mold base 101 has an installation groove in the middle, and the central column 2 is installed inside the installation groove; the mold base 101 is coaxially connected to the mold body 102, and the upper part of the mold body 102 is coaxially connected to the guide cylinder 103 with the same inner diameter.

[0051] This design of the guide cylinder 103 serves a guiding function, which is beneficial for the correct formation of the propellant. The mold base 101, the mold body 102, and the guide cylinder 103 are detachably connected, which facilitates loading and unloading. At the same time, it allows for the replacement of mold bodies 102 of different heights according to the required propellant height, thereby enhancing the applicability of this device.

[0052] As a preferred option, such as Figure 3 As shown, the front of all the dispensing baffles 3 serves as the working surface for connecting the wax-impregnated dispensing pads 4, and the back serves as the connecting surface for connecting the connecting device. According to conventional selection, the dispensing baffles 3 have chamfers on both sides.

[0053] As a preferred option, such as Figure 4As shown, the connecting device includes two upper connecting rods 501 and two lower connecting rods 502. The upper connecting rods 501 and the lower connecting rods 502 are both semi-circular in shape and specification. The upper and lower parts of the back of all dispensing baffles 3 are provided with upper connecting plates 301 and lower connecting plates 302 corresponding to the upper connecting rods 501 and lower connecting rods 502.

[0054] Bolt holes are provided at both ends of the upper connecting rod 501 and the lower connecting rod 502, and at corresponding positions of the upper connecting plate 301 and the lower connecting plate 302; each upper connecting rod 501 can simultaneously screw onto two dispensing baffles 3 located on the same side; each lower connecting rod 502 can simultaneously screw onto two dispensing baffles 3 located on the same side.

[0055] Furthermore, when any upper connecting rod 501 or lower connecting rod 502 is screwed to its corresponding upper connecting plate 301 or lower connecting plate 302, the connecting bolts do not protrude from the front of the corresponding dispensing baffle 3, ensuring that the wax-impregnated dispensing pad 4 is not damaged, thereby ensuring the quality of the medicine column.

[0056] Specifically, the upper connecting rod 501 and the lower connecting rod 502 have the same shape and specifications, and their radii are both equal to half the inner diameter of the medicine column mold barrel 1.

[0057] As a preferred embodiment, each lower connecting rod 502 is connected to at least one support rod 503 on its lower wall. The length of the support rod is equal to the distance from the lower wall of the lower connecting rod 502 to the base 101 of the mold barrel, thereby enhancing the stability of the dispensing baffle 3 within the medicine column mold barrel 1.

[0058] As a preferred embodiment, each dispensing baffle 3 is connected to at least one handle 6 on its upper part, and all handles 6 have a textured structure on their surface to increase friction.

[0059] Specifically, the lower connecting rod 502 and the support rod 503 are connected by screws;

[0060] The dispensing baffle 3 and the handle 6 are connected by screws.

[0061] According to conventional choices in the field, when the number of support rods 503 or handles 6 is greater than 1, they are evenly distributed on the corresponding dispensing baffles 3 or lower connecting rods 502.

[0062] As a preferred embodiment, all dispensing baffles 3 are provided with baffle gap fixing clips on their side walls, and the baffle gap fixing clips protrude toward the working surface of the dispensing baffles 3;

[0063] The gap fixing clips of two adjacent baffles can be spliced ​​together and fixedly connected, so that a gap is created between the two dispensing baffles 3 on the same side, which can clamp the wax-impregnated dispensing pad 4.

[0064] As one specific implementation method, the structure of the baffle gap fixing clip is as follows: Figure 6 As shown, the dispensing baffle 3 has multiple mounting slots for installing baffle gap fixing clips. It should be noted that, according to conventional selection in the art, the mounting slots are evenly distributed on the sidewalls of the dispensing baffle 3. The baffle gap fixing clip is a concave-shaped stretchable structure made of stainless steel, with a protrusion at its center that can be embedded between two dispensing baffles 3. This design not only maintains the gap between the two opposing dispensing baffles 3 at 2mm, but also prevents the wax-impregnated dispensing pad 4 from sliding out or shifting from either side of the gap between the dispensing baffles 3.

[0065] Furthermore, the baffle gap fixing clip can be detachably connected to the dispensing baffle 3 by means of screwing.

[0066] Specifically, the gap between the two dispensing baffles 3 is 2mm;

[0067] The dispensing baffle 3 is 300mm high and 179mm wide;

[0068] The length of the support rod 503 is 75–95 mm;

[0069] The outer diameter of the central column 2 is 40mm, and the inner diameter of the drug cartridge mold 1 is 400mm;

[0070] The upper connecting plate 301 is located 20mm above the corresponding dispensing baffle 3.

[0071] In practice, the height of the compressed drug column is usually 100mm, the inner diameter is 40mm, and the outer diameter is 400mm. Considering that the height of the loose drug powder is more than 2.5 times the height of the formed drug column, the baffle is designed to be 3 times the height of the drug column, that is, h = 300mm. The width of the baffle is (400-40) / 2-1 = 179mm, that is, the width of the baffle is 1mm narrower than the width of the drug ring.

[0072] The device for manufacturing stress relief zones of press-loaded propellant columns of the present invention first prepares two dispensing baffles 3 and an upper connecting rod 501 during installation. The upper connecting rod 501 is connected to the corresponding two upper connecting plates 301 and fixed with bolts. Then, a lower connecting rod 502 is taken and connected to the corresponding two lower connecting plates 302 according to the above operation steps and fixed with bolts.

[0073] After the connection is completed, a semi-circular baffle connection device is formed. Repeat the above steps to install the remaining connecting rods, and connect at least one support rod to the lower part of the lower connecting rod 502 as needed, and connect a handle 6 to the upper part of the dispensing baffle 3. Finally, one or two additional handles can be installed on the upper connecting rod 501 as needed, and the circular dispensing device is assembled.

[0074] Using the baffle gap fixing clip, fasten the two dispensing baffles 3 together, and ensure that there is a 2mm gap between the two dispensing baffles 3 on the same side.

[0075] In use, first assemble the mold base 101, mold 102, and guide barrel 103. Before placing the entire dispensing device into the pressing mold, take four wax-impregnated dispensing pads 4 as wax-impregnated dispensing pads 4. To prevent the powder from being carried out of the wax-impregnated dispensing pads 4 due to excessive friction when removing the device, the design length of the wax-impregnated dispensing pads 4 is slightly longer than the length of the dispensing baffle 3 by 10mm. Place two of the wax-impregnated dispensing pads 4 into the gap of the dispensing baffle 3 and place them against the working surfaces of the two dispensing baffles 3 respectively until the upper end of the wax-impregnated dispensing pads 4 is flush with the upper end of the dispensing baffle 3. At this time, the lower end of the two wax-impregnated dispensing pads 4 extends about 10mm beyond the lower end of the dispensing baffle. Immediately fold the excess part along the edge of the dispensing baffle 3 so that the excess part is attached to the lower end of the dispensing baffle 3. After placement, place two more wax-impregnated dispensing pads 4 into the gap of the other dispensing baffle 3, as described above.

[0076] After placing four wax-impregnated dispensing pads 4 in the gap between the baffles, carefully place the entire device into the pressing mold, using the weight of the dispensing baffle 3 to hold down the four wax-impregnated dispensing pads 4. When the dispensing device is removed after the powder is poured in, a cavity will form at the bottom of the dispensing baffle 3 at the moment the device is lifted. Due to the weight of the powder and the internal compression, the powder will quickly flow into the cavity, pressing down the folded part of the wax-impregnated dispensing pad 4. This prevents the wax-impregnated dispensing pad 4 from being pulled out when the device is lifted. After the dispensing device is in place, weigh the powder of the required pressing column in half, pour each portion of powder into both sides of the dispensing baffle 3, and then use a copper rod to level the powder in the mold. Finally, two people need to operate simultaneously. Each person holds the handle on the dispensing baffle 3 and the handle on the upper connecting rod with both hands, and simultaneously exerts force and slightly shakes to slowly lift the dispensing device upwards, ensuring that the wax-impregnated dispensing pads 4 are not pulled out, and then quickly pull out the dispensing device. After the device is removed, the injection punch can be inserted to begin compressing the pharmaceutical column.

[0077] The apparatus of the present invention for manufacturing stress relief zones in press-loaded propellant charges has been put into use in a certain enterprise, such as... Figure 5 As shown in the figure, a CT slice of a 600kg-class warhead with a stress relief zone, which was tested using the present invention, is shown. It can be clearly seen from the figure that there is a vertical boundary that runs through the axis at the center of each of the two warhead sections, which proves that the device of the present invention can effectively release the stress of the warhead and ensure the safety of the warhead in the later transportation and use.

Claims

1. An apparatus for manufacturing a stress-relief zone in a press-loaded propellant column, characterized in that, It includes a medicine column mold (1), and a central column (2) is vertically arranged at the center of the inside of the medicine column mold (1); a medicine dispensing device is arranged inside the medicine column mold (1); The dispensing device includes four rectangular dispensing baffles (3) vertically arranged inside the medicine column mold (1). The dispensing baffles (3) are arranged in pairs on opposite sides of the central column (2), dividing the inside of the medicine column mold (1) into two parts of equal volume. The upper part of the dispensing baffles (3) does not extend beyond the upper end of the medicine column mold (1), and the height of the dispensing baffles (3) is at least 3 times the height of the required formed medicine column. There is a gap between the two parallel drug dispensing baffles (3), which can accommodate two layers of wax-impregnated drug dispensing pads (4). A layer of wax-impregnated drug dispensing pads (4) is provided on the side of the two parallel drug dispensing baffles (3) that are close to each other. The dispensing baffles (3) located on the opposite side of the central column (2) are fixed together by a connecting device (5).

2. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 1, characterized in that, The aforementioned drug column mold (1) includes a mold base (101); The mold base (101) has an installation groove in the middle, and the central column (2) is installed inside the installation groove; the mold base (101) is coaxially connected to the mold body (102), and the upper part of the mold body (102) is coaxially connected to the guide cylinder (103) with the same inner diameter.

3. The apparatus for manufacturing a stress-relief zone in a press-loaded propellant column as described in claim 2, characterized in that, The front of all the dispensing baffles (3) is used as the working surface for connecting the wax-impregnated dispensing pad (4), and the back is used as the connecting surface for connecting the connecting device (5). The connecting device includes two upper connecting rods (501) and two lower connecting rods (502), both of which are semi-circular; the upper and lower parts of the back of all the dispensing baffles (3) are respectively provided with an upper connecting plate (301) and a lower connecting plate (302) corresponding to the upper connecting rods (501) and the lower connecting rods (502); Bolt holes are provided at both ends of the upper connecting rod (501) and the lower connecting rod (502), and at corresponding positions of the upper connecting plate (301) and the lower connecting plate (302); The upper connecting rod (501) can simultaneously screw onto two dispensing baffles (3) located on the opposite side of the central column (2); the lower connecting rod (502) can simultaneously screw onto two dispensing baffles (3) located on the opposite side of the central column (2).

4. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 3, characterized in that, When any of the upper connecting rods (501) or lower connecting rods (502) are screwed to their corresponding upper connecting plate (301) or lower connecting plate (302), the connecting bolts do not protrude from the front of the corresponding dispensing baffle (3).

5. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 3, characterized in that, The upper connecting rod (501) and the lower connecting rod (502) have the same shape and specifications, and their radii are both equal to half the inner diameter of the drug column mold barrel (1).

6. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 4, characterized in that, Each of the lower connecting rods (502) is connected to at least one support rod (503) on its lower wall. The length of the support rod is equal to the distance from the lower wall of the lower connecting rod (502) to the base of the mold barrel (101).

7. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 6, characterized in that, Each of the aforementioned dispensing baffles (3) is connected to at least one handle (6) on its upper part, and the surface of all the aforementioned handles (6) is provided with a textured structure that can increase friction.

8. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 7, characterized in that, The lower connecting rod (502) and the support rod (503) are connected by screws; The dispensing baffle (3) and the handle (6) are connected by screws.

9. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 1, characterized in that, All of the aforementioned dispensing baffles (3) are provided with baffle gap fixing clips on their side walls, and the baffle gap fixing clips protrude toward the working surface of the dispensing baffles (3); The gap fixing clips of two adjacent baffles can be spliced ​​together and fixedly connected, so that a gap is created between the two dispensing baffles (3) on the same side, which can clamp the wax-impregnated dispensing pad (4).

10. The apparatus for manufacturing a stress relief zone for a press-loaded propellant column as described in claim 6, characterized in that, The gap between the two dispensing baffles (3) is 2 mm; The dispensing baffle (3) is 300mm high and 179mm wide; The length of the support rod (503) is 75-95mm; The outer diameter of the central column (2) is 40mm, and the inner diameter of the drug cartridge mold (1) is 400mm; The upper connecting plate (301) is located 20mm above the corresponding dispensing baffle (3).

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