Compressed air nail-shooting gun

Abstract

The invention discloses a compressed air nail-shooting gun comprising a compressed air inlet device, a gun head, a gun body which is internally provided with a piston assembly and a balance valve, a safety device and a control device, wherein the safety device is respectively connected with the gun head and a trigger to be used for controlling the trigger to move; the control device comprises the trigger and a valve; the balance valve is internally provided with an air exhausting channel; one side of the balance valve is matched with a piston and the other side of the balance valve is provided with a control cavity; when the trigger is not triggered, an air returning cabin is communicated with an air cylinder body, an air storage chamber is communicated with an air inlet channel, the control cavity is communicated with the air inlet channel through the valve, and the air exhausting channel is communicated with the atmosphere; and when the trigger is triggered, the valve and the trigger are matched to control the air exhausting channel to be communicated with the air storage chamber; the air exhausting channel is not communicated with the atmosphere; the control cavity is communicated with the atmosphere; and the control cavity is not communicated with the air inlet channel. The compressed air nail-shooting gun disclosed by the invention can be used for instantly striking a nail into a wooden base body and can also be used for striking the nail into a hard base body such as steel, concrete or rocks.

Description

technical field [0001] The invention relates to a nail gun, in particular to a nail gun using compressed air as a power source, which is mainly used for directly driving nails into hard substrates such as steel, concrete, brick masonry or rocks . Background technique [0002] The nail gun is a commonly used tool in construction and decoration industries. It can instantly inject nails into the matrix. Compared with traditional expansion bolts, using a nail gun to shoot nails has the advantages of saving time, effort and high construction efficiency. . Generally, nail guns are divided into the following two categories according to different power sources: [0003] The first category: combustible gas is used as the power source; the combustible gas in the internal combustion chamber is mainly exploded through the ignition device, and the high pressure generated by the explosion pushes the piston to drive the nail out. As Chinese Patent No. "200320118911.1" discloses a nail g...

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Problems solved by technology

[0005] However, the prior art represented by the above-mentioned patent documents still has the following defects in actual use: one, the amount of gas in the internal combustion chamber is not easy to control, and when the combustible gas in the internal combustion chamber is less, the driving force produced is insufficient To drive the nails into the substrate, and when there are many combustible gases in the internal combustion chamber, the power of the explosion is relatively large, and the nail gun is easily destroyed, and the combustible gas in the internal combustion chamber is easy to leak, thereby causing a fire, and its safety is poor; 1. Using flammable gas as a power source will not only waste energy, but also produce a large amount of exhaust gas when the flammable gas explodes, polluting the environment and is not conducive to environmental protection; 3. The nail gun has no safety device, which is easy to cause injury to people when it is used, and has low safety ;4. The nailing function is single. After each nail is driven out, the nail needs to be filled manually. The nailing efficiency cannot be continuous, and the nailing efficiency is low. At the same time, the process of loading and unloading the nail is complicated, and the nail is easy to fall off; The gun is mainly used to drive nails into wooden substrates, and cannot be used to directly drive nails into hard substrates such as steel, concrete, brick masonry or rocks, and its scope of application is narrow; If nails with matching specifications of the nail gun need to be hit with nails of different specifications, another nail gun of the corresponding specification needs to be used, and the utilization rate of the nail gun is low.

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