Warhead explosive pressing tool

Abstract

The utility model provides a warhead explosive pressing tool which is used for solving the problems that in the prior art, explosive easily enters a gap between a punch and a body, and air cannot be exhausted. The explosive pressing tool comprises a barrel-shaped warhead shell, counter bores are formed in the two ends of the warhead shell, a connecting screw is fixed in the counter bore in the left end in a threaded connection mode, a guide sleeve is fixed in the counter bore in the right end in a threaded connection mode, the end face of the connecting screw abuts against the plane of the counter bore in the left end through a gasket, and the end face of the guide sleeve abuts against the plane of the counter bore in the right end. The connecting screw and the guide sleeve are matched to form a powder pressing cavity in the warhead shell, a pressing punch slides on the guide sleeve through the guide hole, and a powder discharging hole penetrates through the pressing punch. Air and redundant explosive are discharged in the pressing process through the explosive discharging holes, bubbles and gaps in the explosive column are reduced, the quality of the explosive column is further improved, and the explosive is effectively prevented from leaking to the connecting position of the connecting screw, the guide sleeve and the shell through cooperation of the gasket and the step face.

Description

Technical Field

[0001] The utility model relates to the field of pressing tooling for shaped charge warheads, in particular to a warhead pressing tooling. Background Art

[0002] In the manufacturing process of military equipment and weapon systems, the manufacturing of the charge column is a key link to ensure the filling quality, stability and safety of explosives. In the actual pressing process, the pressing tooling is related to the quality and production safety of the charge column. The existing Chinese utility model patent with the application number 202221065761.1 discloses a two-way pressing die for explosive charge columns, which presses the explosives through the upper punch and the lower punch sliding at both ends of the body. The above scheme has the following defects: during the pressing process, the explosives will enter the gaps between the body and the upper punch and the lower punch. When the upper punch and the lower punch move, it is very easy for the explosives to be frictionally heated to form sparks, thereby causing an explosion. Moreover, the upper punch, the lower punch and the body will form a closed cavity during the pressing process and prevent air from being discharged, resulting in many pores on the pressed charge column, which greatly affects the consistency of the charge column. Summary of the Utility Model

[0003] The utility model provides a warhead pressing tooling, which solves the problems that the explosives easily enter the gaps between the punches and the body and the air cannot be discharged in the prior art.

[0004] The technical solution of the utility model is realized as follows:

[0005] A warhead pressing tooling includes a warhead shell that is integrally cylindrical. Counterbore holes are provided at both ends of the warhead shell. A connecting screw is screwed and fixed in the counterbore hole at the left end, and a guide sleeve is screwed and fixed in the counterbore hole at the right end. The end face of the connecting screw abuts against the plane of the counterbore hole at the left end through a gasket, and the end face of the guide sleeve abuts against the plane of the counterbore hole at the right end. The connecting screw and the guide sleeve cooperate to form a pressing cavity in the warhead shell. A pressing punch slides through a guiding hole in the guide sleeve, and a medicine discharging hole runs through the pressing punch.

[0006] Furthermore, the warhead shell between the guide sleeve and the connecting screw is composed of two semi-circular arc plates spliced together. One end of one arc plate is respectively connected to the connecting screw and the guide sleeve. A clamping device is provided outside the warhead shell, and the clamping device makes the two arc plates abut and seal. The easy-to-open shell design also facilitates inspection and cleaning work, reduces the maintenance difficulty, and improves the service life of the equipment.

[0007] Furthermore, the guide sleeve, the pressing punch, the connecting screw, and the gasket are all made of non-ferrous metals. The use of non-ferrous metals reduces the sparks generated by friction or impact, and reduces the risk of the explosives catching fire during the pressing process.

[0008] Further, the end face of the punching die away from the propellant chamber is connected to the medicine discharging hole through a tapered counterbore, and the small end of the tapered counterbore is communicated with the medicine discharging hole. The tapered counterbore makes it easier for the explosive to slide under the action of gravity, reduces the accumulation and blockage of the explosive near the medicine discharging hole, simplifies the cleaning process of the tooling, and reduces the labor intensity of manual cleaning.

[0009] Further, wrench holes are provided on the sides of the connecting screw, the guide sleeve and the punching die. The wrench holes make the disassembly of the components more rapid, thus accelerating the maintenance and repair speed of the equipment.

[0010] Further, a heating chamber is provided on one side of the warhead shell. The heating chamber can accommodate the assembled warhead shell and the explosive, and the heating chamber can heat the warhead shell to 65 - 75 degrees. Preheating can increase the plasticity of the explosive, reduce the formation of internal stress and defects, and contribute to improving the accuracy and consistency of explosive forming.

[0011] Further, an asphalt varnish layer is provided on the inner side wall of the propellant chamber. The asphalt varnish layer has good sealing performance, can fill the tiny pores or unevenness on the surface of the side wall of the propellant chamber, and effectively prevents the gunpowder or other fillers from leaking during transportation, storage or use.

[0012] Further, the clamping device is specifically a hoop.

[0013] Beneficial effects that can be produced by this technical solution.

[0014] The medicine discharging hole of the present utility model enables air and excess explosive to be discharged during the pressing process, reduces the bubbles and voids inside the medicine column, further improves the quality of the medicine column, and can also collect the discharged explosive, reducing material waste. The cooperation between the gasket and the stepped surface effectively prevents the leakage of the explosive to the connection between the connecting screw, the guide sleeve and the shell, reducing the leakage risk during the operation. The counterbored hole design of the warhead shell and the screwed fixing method of the connecting screw and the guide sleeve make the tooling assembly easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0016] Figure 1 It is a cross-sectional view of the present utility model;

[0017] Figure 2 It is a top view of the present utility model;

[0018] Figure 3 This is a three-dimensional structural schematic diagram of the warhead shell and the heating chamber of the present utility model;

[0019] Figure 4 This is a three-dimensional structural schematic diagram of the warhead shell of the present utility model.

[0020] Wherein: 1. Warhead shell, 2. Countersunk hole, 3. Connecting screw, 4. Guide sleeve, 5. Gasket, 6. Pressing chamber, 7. Punch, 8. Drug discharging hole, 9. Arc plate, 10. Clamping device, 11. Tapered countersunk hole, 12. Wrench hole, 13. Heating chamber, 14. Asphalt varnish layer. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figures 1-4 shown, an embodiment of the present utility model provides a warhead pressing tooling, including a warhead shell 1 that is integrally cylindrical. Countersunk holes 2 are provided at both ends of the warhead shell 1. A connecting screw 3 is screwed and fixed in the countersunk hole 2 at the left end, and a guide sleeve 4 is screwed and fixed in the countersunk hole 2 at the right end. The end face of the connecting screw 3 abuts against the plane of the countersunk hole 2 at the left end through a gasket 5, and the end face of the guide sleeve 4 abuts against the plane of the countersunk hole 2 at the right end. The connecting screw 3 and the guide sleeve 4 cooperate to form a pressing chamber 6 in the warhead shell 1. A punch 7 slides through a guiding hole in the guide sleeve 4, and a drug discharging hole 8 penetrates through the punch 7.

[0023] During use, the guide sleeve 4 and the connecting screw 3 are fixed at both ends of the warhead shell 1. The explosive is injected into the warhead shell 1 through the guiding hole for the punch 7 to slide in the guide sleeve 4. After the drug fills the pressing chamber 6, a certain pressure is applied to the explosive through the punch 7 to form a drug column, and the excess explosive can be discharged through the drug discharging hole 8. Through the cooperation of the guiding hole of the guide sleeve 4 and the punch 7, it can ensure that the explosive is evenly filled into the warhead shell 1, and the end face of the drug column is made flat by the pressure applied by the punch 7, which helps to improve the accuracy and consistency of the charging. Through the gasket 5, it can prevent the explosive from being extruded into the gap between the connecting screw 3 and the warhead shell 1 during the pressing process. Through the setting of the stepped surface, it can further prevent the explosive from entering the connecting screw 3 or the side wall of the guide sleeve 4 screwed with the warhead shell 1. When the pressing of the explosive is completed, the drug column in the shell can be taken out by disassembling the tooling. After the drug column is taken out, the surface of the drug column can be trimmed by a brass blade to further eliminate surface defects and improve the overall quality of the drug column.

[0024] like Figures 2-4 As shown, the warhead shell 1 between the guide sleeve 4 and the connecting screw 3 is formed by splicing two semicircular arc plates 9, wherein the two ends of one arc plate 9 are respectively connected to the connecting screw 3 and the guide sleeve 4, and a clamping device 10 is provided outside the warhead shell 1, and the clamping device 10 makes the two arc plates 9 abut against each other and seal. The warhead shell 1 is cut along the dotted line by wire cutting to form two arc plates 9. The axial cutting position should be at the center of the warhead shell 1, and the radial cutting position should be staggered from the outer surface of the drug column and the threaded connection. By avoiding the position of the outer surface of the drug column during wire cutting and cutting, it can be ensured that the outer surface of the drug column remains relatively intact after being taken out, reducing the workload of subsequent correction of the drug surface using tools such as brass blades. After the drug column is pressed, it is usually difficult to remove the traditional integral warhead shell 1, and it is easy to damage the drug column or the shell. By splicing the semicircular arc plates 9 and combining the clamping device 10, the shell can be opened conveniently and the explosive column can be taken out quickly and without damage. The clamping device 10 ensures that the arc plates 9 can be tightly abutted after splicing to form a sealed explosive pressing chamber 6. This sealing not only prevents leakage of explosives during the pressing process, but also helps to reduce the influence of the external environment on the explosive column, such as changes in the performance of the explosive column caused by factors such as humidity and temperature.

[0025] The guide sleeve 4, punch 7, connecting screw 3 and gasket 5 are all non-ferrous metals. The use of non-ferrous metals can reduce sparks caused by friction or impact, thereby reducing the risk of fire of explosives during the pressing process. For example, the guide sleeve 4 and the connecting screw 3 can be made of aluminum, the punch 7 can be made of brass, and the gasket 5 can be made of copper. In an environment sensitive to static electricity, non-ferrous metals can better conduct and dissipate static electricity, reducing potential dangers caused by static electricity accumulation. Non-ferrous metals are usually easier to process, and can be easily manufactured in precise sizes and shapes, thereby improving the accuracy of tooling.

[0026] like Figure 1 As shown, the end face of the punch 7 away from the medicine pressing chamber 6 is connected to the medicine discharging hole 8 through a conical countersunk hole 11, and the small end of the conical countersunk hole 11 is connected to the medicine discharging hole 8. When the explosive is discharged from the medicine discharging hole 8, the conical countersunk hole 11 allows the explosive to be affected by gravity during discharge, and naturally slides down, which speeds up the powder discharge speed, thereby improving the cleaning efficiency. By providing the conical countersunk hole 11, the overall length of the medicine discharging hole 8 can be shortened, which is convenient for the discharge of explosives. The timely discharge of explosives avoids the accumulation of excessive pressure in the medicine pressing chamber 6, and reduces the risk of safety accidents caused by excessive pressure.

[0027] like Figure 1As shown, wrench holes 12 are provided on the sides of the connecting screw 3, the guide sleeve 4, and the punching press 7. During the disassembly process, using special tools such as wrenches can apply force more stably and safely, reducing the risk of accidental injuries caused by improper manual operations. The wrench holes 12 enable the operator to quickly disassemble the components using tools such as wrenches, improving the convenience of the operation.

[0028] As Figure 3 shown, a heating chamber 13 is provided on one side of the warhead shell 1. The heating chamber 13 can accommodate the assembled warhead shell 1 and explosives, and the heating chamber 13 can heat the warhead shell 1 to 65 - 75 degrees. The heating chamber 13 is an existing heating and insulation device. Through the heating chamber 13, the tooling and explosives can be preheated. After preheating, the plasticity of the explosives increases, reducing the pressure required during the pressing process, thereby reducing the pressure requirement for the pressing machine and making the pressed explosive column have better weight and volume consistency. Preheating can also remove the moisture in the gunpowder, thereby improving the stability of the explosives.

[0029] An asphalt varnish layer 14 is provided on the inner side wall of the pressing chamber 6. Since the particles of the gunpowder are small, they are likely to enter the gaps of the mold during pressing, which will not only affect the height dimension of the explosive column and cannot guarantee the quality of the finished product, but also may pose an explosion risk. Therefore, by spraying asphalt varnish, it can effectively prevent the gunpowder from entering the gaps of the mold, improving the safety of the pressing process, and at the same time helping to keep the mold clean and extend the service life of the mold.

[0030] The clamping device 10 is specifically a hoop. The hoop is an existing technology. The hoop slides into the end of the warhead shell 1, and then the bolts are tightened so that the arc-shaped plates 9 are in contact with each other to form a sealed pressing chamber 6. By forming a sealed pressing chamber 6, it can ensure a tight fit between the hoop and the warhead shell 1, thereby improving the sealing performance. Since the installation and disassembly of the hoop are simple and fast, it reduces the dependence on professional skilled personnel and lowers the labor cost. The use of the hoop simplifies the assembly process of the warhead shell 1, contributing to improving the overall production efficiency.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A warhead charge pressing tool, characterized in that: The invention comprises a warhead shell (1) which is cylindrical in shape as a whole. Countersunk holes (2) are provided at both ends of the warhead shell (1). A connecting screw (3) is screwed and fixed in the countersunk hole (2) at the left end. A guide sleeve (4) is screwed and fixed in the countersunk hole (2) at the right end. The end face of the connecting screw (3) abuts against the plane of the countersunk hole (2) at the left end through a gasket (5). The end face of the guide sleeve (4) abuts against the plane of the countersunk hole (2) at the right end. The connecting screw (3) and the guide sleeve (4) cooperate to form a charge pressing chamber (6) in the warhead shell (1). A pressing punch (7) slides through the guide hole. A charge discharge hole (8) is penetrated through the pressing punch (7).

2. A warhead charge pressing tool according to claim 1, characterized in that: The warhead housing (1) between the guide sleeve (4) and the connecting screw (3) is formed by splicing two semicircular arc plates (9), wherein two ends of one of the arc plates (9) are respectively connected to the connecting screw (3) and the guide sleeve (4), and a clamping device (10) is provided outside the warhead housing (1), and the clamping device (10) causes the two arc plates (9) to abut against each other and seal.

3. The warhead charge pressing tool according to claim 1, characterized in that: The end surface of the pressing punch (7) away from the medicine pressing cavity (6) is connected to the medicine discharge hole (8) through a conical countersunk hole (11), and the small end of the conical countersunk hole (11) is connected to the medicine discharge hole (8).

4. The warhead charge pressing tool according to claim 1, characterized in that: The sides of the connecting screw (3), the guide sleeve (4) and the punch (7) are all provided with a spanner hole (12).

5. The warhead charge pressing tool according to claim 1, characterized in that: A heating chamber (13) is provided on one side of the warhead shell (1), and the heating chamber (13) can accommodate the assembled warhead shell (1) and explosives. The heating chamber (13) can heat the warhead shell (1) to 65-75 degrees.

6. The warhead charge pressing tool according to claim 1, characterized in that: The guide sleeve (4), the punch (7), the connecting screw (3) and the gasket (5) are all made of non-ferrous metals.

7. The warhead charge pressing tool according to claim 1, characterized in that: The inner side wall of the medicine pressing chamber (6) is provided with an asphalt varnish layer (14).

8. The warhead charge pressing tool according to claim 2, characterized in that: The clamping device (10) is specifically a hoop.

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