Auxiliary device for separating cartridge case from primer cap

Abstract

The utility model discloses an auxiliary device for separating a cartridge case from a primer cap, which comprises a base, a groove body is arranged on the upper surface of the base, a bottom plate sheet is arranged in the groove body, a fixed plate sheet is arranged on the upper surface of the base, a horizontally arranged U-shaped groove penetrates through a convex table, and an opening of the U-shaped groove penetrates through the side wall of any width of the fixed plate sheet; the tool further comprises a hammering nail and a limiting seat, the limiting seat is detachably connected to an opening in the small end of the cartridge case to be disassembled, and the hammering nail is slidably arranged on the inner side of the limiting seat in a sleeving mode. The device has the beneficial effects that the device is simple in overall structure and convenient to carry, the whole device can be disassembled and assembled, parts can be conveniently replaced according to requirements, and use is more flexible; different knocking devices can be selected according to actual conditions to assist an operator to disassemble the primer cap, so that the labor intensity of the operator is reduced, the danger of disassembly work is reduced, and the defect of insufficient experience of the operator can be effectively overcome.

Description

Technical Field

[0001] The utility model relates to the field of military equipment, in particular to an auxiliary device for separating a bullet shell and a primer cap. Background Art

[0002] In the process of investigating gun-related cases, through the inspection of bullet traces, shooting residue inspection and analysis of the explosive composition in the primer, it is possible to identify the gun involved in the case and provide guidance for solving the case. However, there are limited domestic manufacturers capable of producing primers and filling them with high explosives. As long as the composition of the high explosive in the primer can be determined, the manufacturer and production site of the guns and bullets involved can be accurately identified, providing strong clues for solving the case. Turning the concept of "identifying the gun by the bullet and finding the person by the gun" into reality, there are many types of domestic standard gun and bullet primers, which can be mainly divided into three categories: fulminate-containing firing powder, fulminate-free wet firing powder and non-corrosive firing powder. The most common firing powder in gun-related cases is fulminate-containing firing powder, but sometimes non-corrosive firing powder is also encountered; in order to observe and inspect the trace evidence left inside the primer, a device is needed to manually disassemble the primer at the bottom of the shell.

[0003] When separating the cartridge case and the primer cap of existing guns, a plurality of pliers are usually used to clamp the open end of the cartridge case and the primer cap to be disassembled respectively, and the operator uses his own strength to pull them toward both sides to separate the cartridge case and the primer cap. In actual operation, the pliers are inconvenient to use, the primer cap is difficult to separate, and the disassembly work is dangerous.

[0004] Therefore, it is a problem worth studying to provide a device for separating a cartridge case and a primer cap which has a simple structure and is easy to operate. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the utility model is to simplify the overall structure of the device, facilitate carrying, be more flexible in use, and reduce the danger of disassembly work.

[0006] The purpose of the utility model is achieved in this way:

[0007] The auxiliary device for separating a cartridge case from a primer cap comprises a base, a groove body is provided on the upper surface of the base, a bottom plate is provided in the groove body, a fixing plate with a convex platform extending upward at the width midline is provided on the upper surface of the base, a horizontally arranged U-shaped groove is penetrated on the convex platform, and the opening of the U-shaped groove penetrates any width side wall of the fixing plate to clamp the groove between the bottom end of the cartridge case to be disassembled and the primer cap;

[0008] It also includes a hammer nail and a limiting seat, wherein the limiting seat is detachably connected to the opening of the small end of the cartridge case to be removed, and the hammer nail is slidably sleeved on the inner side of the limiting seat.

[0009] As a preferred solution, there is an arc transition between the convex platform and the fixed plate.

[0010] As a preferred solution, the fixing plate is fixedly connected to the base by bolts or screws, and holes for passing the bolts or screws are provided on both sides of the length of the fixing plate.

[0011] As a preferred solution, holes are provided on both sides of the bottom plate, the inner walls of the holes are fully or partially circular, and the holes correspond to the holes on the fixed plate.

[0012] As a preferred solution, a circular hole corresponding to the inner end of the U-shaped groove is provided on the surface of the bottom plate.

[0013] As a preferred solution, the upper surface of the bottom plate is provided with supporting protrusions located on both sides of the bottom plate to form support for the fixed plate.

[0014] As a preferred solution, a retaining ring corresponding to the opening of the small end of the shell is provided at the opening of the limit seat.

[0015] As a preferred solution, the retaining ring is a structure that rotates in a circle along the axis of the limiting seat, and its cross section is a rectangular or right-angled structure.

[0016] As a preferred solution, the limit seat is made of a flexible material, and the inner wall of the limit seat is provided with a metal tube that matches the clearance of the hammer nail.

[0017] As a preferred solution, a storage groove for accommodating the hammer nail and the limiting seat is provided on the base.

[0018] Positive beneficial effects:

[0019] The overall structure of the device is simple, easy to carry, and can be disassembled and assembled as a whole, so that the bottom plate, fixed plate, hammer nail or limit seat can be replaced according to needs, which is more flexible in use;

[0020] The primer cap can be fixed, and different striking devices can be selected according to actual conditions to assist operators in removing the primer cap, thus reducing the labor intensity of operators;

[0021] The primer still remains between the base plate and the convex platform after disassembly, which avoids the primer splashing out, reduces the danger of disassembly work, and can effectively make up for the lack of experience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the top view of the bottom plate in the third embodiment;

[0024] Figure 3 This is a schematic diagram of a top view of the bottom plate of another implementation method in the third embodiment;

[0025] Figure 4 It is a structural schematic diagram of the fixed plate in the utility model;

[0026] Figure 5 This is a schematic diagram of the internal structure of the limit seat in the third embodiment;

[0027] Figure 6 This is a schematic diagram of the internal structure of a limit seat in another implementation method of the third embodiment;

[0028] The figure shows: base 1, tank body 101, storage tank 102, bottom plate 2, concave hole 201, round hole 202, supporting convex 203, fixing plate 3, U-shaped groove 301, convex platform 302, hammer nail 4, limit seat 5, retaining ring 501, metal cylinder 502; DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] First embodiment

[0031] See also Figure 1 - Figure 6 As shown, the utility model provides an auxiliary device for separating a cartridge case from a primer cap, comprising a base 1, the base 1 having a rectangular parallelepiped structure, a groove 101 being provided on the upper surface of the base 1, a bottom plate 2 being provided in the groove 101, a fixed plate 3 having a convex platform 302 extending upward at the width midline being provided on the upper surface of the base 1, a circular arc transition being formed between the convex platform 302 and the fixed plate 3, the convex platform 302 being a convex structure higher than the fixed plate 3, the convex platform 302 being integrally formed with the fixed plate 3, the convex platform 302 being able to extend as a whole along the width midline of the fixed plate 3, and the convex platform 302 being able to extend along the width midline of the fixed plate 3 as a part of the fixed plate 3, and the convex platform 302 being able to extend along the width midline of the fixed plate 3 to the side of the fixed plate 3 Wall, refer to the attached drawings of the specification, the convex platform 302 is a side wall that partially extends to the fixed plate 3, and a horizontally arranged U-shaped groove 301 is penetrated on the convex platform 302, and the opening of the U-shaped groove 301 penetrates any width side wall of the fixed plate 3, and is used to clamp the groove between the bottom end of the cartridge case to be removed and the primer cap, and the distance between the bottom surface of the convex platform 302 and the bottom surface of the fixed plate 3 is not less than the outer wall thickness of the primer cap. In this way, when the bullet cartridge case is installed, the groove between the bottom end of the cartridge case to be removed and the primer cap is plugged into the U-shaped groove 301 correspondingly, and the bottom end of the cartridge case can be directly fixed on the outside of the U-shaped groove 301, and there is still a gap between the primer cap and the bottom plate 2;

[0032] The hammering nail 4 and the limiting seat 5 are also included. The limiting seat 5 is detachably connected to the opening of the small end of the cartridge case to be disassembled. The hammering nail 4 is slidably sleeved on the inner side of the limiting seat 5. When the primer cap is disassembled and separated, the limiting seat 5 is installed at the opening of the upper small end of the cartridge case, and the hammering nail 4 is slid into the inside of the limiting seat 5. The high end of the hammering nail 4 is struck by a striking tool, and the hammering nail 4 slides inside the limiting seat 5 to strike the primer cap, thereby assisting the separation of the primer cap from the cartridge case. The separated primer cap is located between the convex platform 302 and the bottom plate 2, which is convenient for taking. The striking tool can be a manual striking tool or an electric or pneumatic striking tool, which is not limited again.

[0033] Furthermore, a storage groove 102 for limiting the position of the hammer nail 4 and the limit seat 5 is provided on the outer wall of the base 1. When not in use, the hammer nail 4 and the limit seat 5 are separated from the base 1 as a whole to avoid the loss of the hammer nail 4 and the limit seat 5. The hammer nail 4 and the limit seat 5 can be stored in the storage groove 102, which is convenient for carrying the device and more practical.

[0034] The overall structure of the device is simple and easy to carry, and the device can be disassembled and assembled as a whole, so that the bottom plate 2, the fixed plate 3, the hammer nail 4 or the limit seat 5 can be replaced according to needs. It is more flexible in use and can fix the primer cap. Different knocking devices can be selected according to actual conditions to assist the operator in disassembling the primer cap, thereby reducing the labor intensity of the operator. The primer cap still remains between the bottom plate 2 and the convex platform 302 after disassembly, which avoids the primer cap from splashing out, reduces the danger of disassembly work, and can effectively make up for the operator's lack of experience.

[0035] The second embodiment is different from the first embodiment in that:

[0036] The fixing plate 3 is fixedly connected to the base 1 by bolts or screws. Holes for passing the bolts or screws are provided on both sides of the length of the fixing plate 3. The bolts are threadedly connected to the base 1. The holes can be threaded holes or through holes, preferably threaded holes. The fixing effect of the fixing plate 3 by bolts is good.

[0037] The bottom plate 2 is provided with concave holes 201 on both sides, and the inner wall of the concave holes 201 is a full or partial circular surface. The concave holes 201 correspond to the holes on the fixed plate 3. When the fixed plate 3 is fixed, the bolts or screws on the fixed plate 3 can pass through the concave holes 201, which also indirectly realizes the compression and limit of the bottom plate 2. Especially for the case where the gap between the tank body 101 and the bottom plate 2 is large, when the concave holes 201 are partially circular, that is, when the concave holes 201 are semicircular structures, when the fixed plate 3 is fixed, the compression and limit fixation of the bottom plate 2 is also realized, which is also convenient for the disassembly operation of the bottom plate 2;

[0038] When the bottom plate 2 and the base 1 are in a clearance fit state, the concave hole 201 can be set according to the actual situation, or it can be not set, and the clearance fit between the bottom plate 2 and the groove body 101 is directly used to limit the bottom plate 2. After the fixed plate 3 is installed on the surface of the base 1, the bottom surface of the fixed plate 3 contacts the surface of the bottom plate 2, and the pressing operation of the bottom plate 2 is also realized;

[0039] Furthermore, a circular hole 202 corresponding to the inner end of the U-shaped groove 301 is provided on the surface of the bottom plate 2. The radius of the arc at the inner end of the U-shaped groove 301 on the surface of the fixed plate 3 is 5 mm for the limit seat. The diameter of the circular hole 202 is less than or equal to mm. When the limit seat 5 is struck, the cartridge case will vibrate slightly. The position of the circular hole 202 corresponds to the position of the primer. The circular hole 202 can be used to reduce the rebound of the primer on the circular hole 202 when it is struck, thereby increasing the service life of the bottom plate 2. Furthermore, in the case where the base 1 has been fixedly installed on other work surfaces and the base 1 cannot be flipped over, the circular hole 202 can be used to facilitate the removal of the bottom plate 2 from the inside of the groove body 101 for replacement, which is more convenient.

[0040] See the instruction manual Figure 3 As shown, in the structure of the bottom plate 2, the upper surface of the bottom plate 2 is provided with support protrusions 203 located on both sides of the bottom plate 2 to support the fixed plate 3. The support protrusions 203 are integrally formed with the floor plate 2, and the upper surface of the support protrusions 203 is in contact with the bottom surface of the fixed plate 3.

[0041] In addition, the support protrusion 203 is made of rubber, and is bonded to the floor sheet 2 . The support protrusion 203 is used to support the fixed plate 3 , and the elasticity of the support protrusion 203 can play a buffering role.

[0042] The third embodiment is different from the first embodiment in that:

[0043] See the instruction manual Figure 1 , Figure 5 , Figure 6 As shown, a retaining ring 501 corresponding to the opening of the small end of the cartridge case is provided at the opening of the limit seat 5. The retaining ring 501 can limit the limit seat 5 when the limit seat 5 is installed at the opening of the small end of the cartridge case. The hammer nail 4 slides inside the limit seat 5, and the limit seat 5 can guide the hammer nail 4. Specifically, the retaining ring 501 is a circular rotating structure along the axis of the limit seat 5, and its cross section is a rectangular or right-angled structure. When the retaining ring 501 is a circular rotating structure along the axis of the limit seat 5, the retaining ring 501 is a toroidal structure as a whole, and the toroidal surface is used to limit the limit seat 5 when it is installed at the opening of the small end of the cartridge case.

[0044] When the retaining ring 501 is a right-angled cross-section structure that rotates along the axis of the limiting seat 5, its horizontal end surface forms a horizontal annular surface, and its vertical end surface forms a vertically extending annular surface with a gap between the limiting seat 5. By utilizing the gap between the vertical annular surface and the limiting seat 5, when the limiting seat 5 is installed, the retaining ring 501 is used to wrap the opening of the small end of the cartridge case, so that the fixation is more secure.

[0045] Furthermore, the limit seat 5 is made of a flexible material, which can be a rubber material, a silicone material or other flexible material. The inner wall of the limit seat 5 is provided with a metal tube 502 which is gap-matched with the hammer nail 4. The metal tube 502 can play a supporting role. When the limit seat 5 is installed at the opening of the small end of the cartridge case, the deformation of the limit seat 5 can make the connection between the limit seat 5 and the small end of the cartridge case tighter, and the retaining ring 501 can be used to wrap the small end of the cartridge case. During processing, the limit seat 5 and the retaining ring 501 are integrally formed and reinforced. When the work is on the outside of the metal tube 502, the overall connection effect of the limit seat 5, the retaining ring 501 and the metal tube 502 is better. When in use, it is necessary to knock the hammer nail 4, and the hammer nail 4 will slide up and down and vibrate inside the metal tube 502. By utilizing the elasticity of the metal tube 502, it is possible to effectively avoid the limit seat 5 from being greatly displaced with the vibration of the hammer nail 4, thereby achieving the limiting condition of the limit seat 5 and the metal tube 502, which is convenient for continuous knocking of the hammer nail 4 and assisting the disassembly between the bullet casing and the primer cap.

Claims

1. A device for assisting the separation of a cartridge case and a primer cap, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a groove body (101), the groove body (101) is provided with a bottom plate (2), the upper surface of the base (1) is provided with a fixing plate (3) with a convex platform (302) extending upward at the width midline, the convex platform (302) is penetrated by a horizontally arranged U-shaped groove (301), the opening of the U-shaped groove (301) penetrates through any width side wall of the fixing plate (3), and is used to clamp the groove between the bottom end of the shell to be disassembled and the primer cap; it also includes a hammer nail (4) and a limit seat (5), the limit seat (5) is detachably connected to the opening of the small end of the shell to be disassembled, and the hammer nail (4) is slidably sleeved on the inner side of the limit seat (5).

2. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: There is an arc transition between the convex platform (302) and the fixed plate (3).

3. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: The fixing plate (3) is fixedly connected to the base (1) by means of bolts or screws, and holes are provided on both sides of the length of the fixing plate (3) for the bolts or screws to pass through.

4. The auxiliary device for separating a cartridge case from a primer cap according to claim 3, characterized in that: Concave holes (201) are provided on both sides of the bottom plate (2), the inner walls of the concave holes (201) are fully or partially circular, and the concave holes (201) correspond to the holes on the fixed plate (3).

5. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: The surface of the bottom plate (2) is provided with a circular hole (202) corresponding to the inner end of the U-shaped groove (301).

6. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: The upper surface of the bottom plate (2) is provided with supporting protrusions (203) located on both sides of the bottom plate (2) to support the fixed plate (3).

7. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: The upper opening of the limit seat (5) is provided with a retaining ring (501) corresponding to the opening of the small end of the cartridge case.

8. The auxiliary device for separating a cartridge case from a primer cap according to claim 7, characterized in that: The retaining ring (501) is a structure that is circumferentially rotated along the axis of the limiting seat (5), and its cross section is a rectangular or right-angled structure.

9. The auxiliary device for separating a cartridge case from a primer cap according to claim 8, characterized in that: The limiting seat (5) is made of a flexible material, and the inner wall of the limiting seat (5) is provided with a metal cylinder (502) which is clearance-matched with the hammer nail (4).

10. The auxiliary device for separating a cartridge case from a primer cap according to claim 1, characterized in that: The base (1) is provided with a receiving groove (102) for receiving the hammer nail (4) and the limiting seat (5).

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