CN-224223813-U - Nail shooting bullet with sealing device

Abstract

The utility model belongs to the technical field of nail shooting fastening, and discloses a nail shooting bullet with a sealing device, which comprises a bullet shell, wherein one axial end of the bullet shell is a firing end, one end, far away from the firing end, of the bullet shell is a transmitting end, the firing end is connected with an end cover, the end cover is connected with a firing mechanism, the transmitting end is provided with a transmitting port, the inner wall of the transmitting port is connected with a rupture disk, the bullet shell is filled with propellant powder, the bullet shell is connected with a sealing ring, and the sealing ring is provided with a plurality of groups. The utility model can be tightly attached to the inner wall of the gun barrel of the nail gun, and avoid the gas flowing in the gap between the cartridge case and the gun barrel, so that the energy generated by combustion acts on the nail-shooting propelling process more intensively, the emission efficiency is improved, and the abnormal sound and vibration caused by gas leakage are reduced.

Inventors

• ZENG DAYE
• WU BO

Assignees

• 广元创纪紧固器材有限公司

Dates

Publication Date

20260512

Application Date

20250610

Claims (6)

1. 1. The nail shooting bullet with the sealing device is characterized by comprising a bullet shell (1), wherein one axial end of the bullet shell (1) is a firing end (2), one end, far away from the firing end (2), of the bullet shell (1) is a firing end (9), the firing end (2) is connected with an end cover (3), the end cover (3) is connected with a firing mechanism, the firing end (9) is provided with a firing port (6), the inner wall of the firing port (6) is connected with a rupture disk (8), the bullet shell (1) is filled with a propellant powder (5), the bullet shell (1) is connected with a sealing ring (10), and the sealing ring (10) is provided with a plurality of groups.
2. 2. A nail-shooting pot with sealing means according to claim 1, characterized in that the sealing ring (10) is made of a thermally expansive material.
3. 3. A nail-shooting pot with sealing device according to claim 1, characterized in that the rupture disc (8) is provided with a conical groove (7).
4. 4. A nail-shooting pot with a sealing device according to claim 1, characterized in that the propellant powder (5) is nitrocotton.
5. 5. The nail shooting pot with sealing device of claim 4, wherein the firing mechanism comprises a conical block (12), the end cover (3) is provided with a firing opening (11), the conical block (12) is slidably connected with the inner wall of the firing opening (11), the inner wall of the firing opening (11) is provided with a sliding groove (14), the conical block (12) is connected with a sliding block (13), the sliding block (13) is slidably connected with the sliding groove (14), the inner wall of the sliding groove (14) is connected with a spring (15), and the other end of the spring (15) is connected with the sliding block (13).
6. 6. A nail-shooting pot with sealing means according to claim 5, characterized in that the shell (1) is connected with a moisture-proof membrane (4).

Description

Nail shooting bullet with sealing device Technical Field The utility model relates to the technical field of nail shooting fastening, in particular to a nail shooting bullet with a sealing device. Background The gunpowder nail-shooting fastening equipment comprises three series products of a nail shooting bullet, a nail shooting device and a nail shooting. The basic principle is that the shooting gun is used for striking the bottom of the shooting nail to ignite the propellant powder in the shooting nail, so as to generate strong driving force to drive the shooting nail into the matrix, thereby realizing the purpose of fixing the nail. The novel fastening device has the advantages of convenience in use, good fastening effect and the like, and is widely applied to the fields of building construction, decoration and fitment, smelting chemical industry, underwater operation and the like. The Chinese patent (publication No. CN 221677073U) discloses a nitrocotton type nail shooting bullet which comprises a shell, nitrocotton, a firing part, a transmitting through hole and a sealing element. The shell is of an integrated integral structure, can be realized through a stamping process, does not need to adopt a closing-in process, saves working procedures and processing cost, and is beneficial to rapid processing and forming of the nitrocotton type nail shooting bullet. However, the practical application finds that the technical scheme still has at least the following defects: After the nail gun is filled with the nail gun, a gap is formed between the front side of the nail gun and the inner cavity of the nail gun, so that after the nail gun is fired, internal gas flows in the gap, turbulence is generated after the flowing speed exceeds a certain threshold value, and gas molecules are subjected to severe collision and vibration by the turbulence, so that noise is generated. Disclosure of utility model The present utility model is intended to provide a nail shooting cartridge with a sealing device to solve the problems set forth in the background art. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a nail shooting bullet with sealing device, includes the shell case, the axial one end of shell case is the firing end, the shell case is kept away from firing end one end and is the transmitting end, the firing end is connected with the end cover, the end cover is connected with firing mechanism, the transmitting port has been seted up to the transmitting end, transmitting port inner wall connection has the rupture disk, the shell case is filled with the propellant powder, the shell case is connected with the sealing ring, the sealing ring is equipped with a plurality of groups. Preferably, the sealing ring is made of a thermally expansive material. Preferably, the rupture disc is provided with a conical groove. Preferably, the propellant is nitrocotton. Preferably, the firing mechanism comprises a conical block, the end cover is provided with a firing opening, the conical block is in sliding connection with the inner wall of the firing opening, the inner wall of the firing opening is provided with a sliding groove, the conical block is connected with a sliding block, the sliding block is in sliding connection with the sliding groove, the inner wall of the sliding groove is connected with a spring, and the other end of the spring is connected with the sliding block. Preferably, a moisture barrier is attached to the cartridge case. Compared with the prior art, the technical scheme has the beneficial effects that: (1) This technical scheme can closely laminate the nail gun barrel inner wall through setting up a plurality of sealing rings, avoids gas to flow in the space between shell case and barrel, produces the noise. And the elastic deformation capability of the sealing ring can compensate the machining tolerance of the cartridge case and the gun barrel, even if slight dimensional deviation exists, the tight fit can be realized through extrusion deformation, and the adaptability of the product to different equipment is improved. In addition, the multiple sealing design can delay the gas escape speed, so that the energy generated by combustion acts on the nail-shooting propelling process more intensively, and the penetrating capability of the nail-shooting is ensured to be stable. (2) By arranging the sealing ring made of the thermal expansion material, the nail shooting bullet can be rapidly expanded at the moment of firing due to high temperature generated by the combustion of the propellant, and the micro gap between the bullet shell and the gun barrel is tightly filled after the volume expansion of the sealing ring, so that a sealing structure which is tighter than that at normal temperature is formed. (3) Through setting up the awl shape groove, the pointed end in awl shape groove forms stress concentration point towards the prope