| 摘要 |
An air actuated plastic compound dispensing gun comprised of detachable cylindrical housing and interlocking body member. The housing has two open ends, the forward one of which is circumferentially inwardly flanged. The body member may have one open end and one closed end, the open end of the member being provided with interlocking engagement means to receive and secure therein the cylindrical housing. A cylindrical disposable type plastic filled cartridge is placed in the housing with its forward end protruding through the flanged end of the housing. The cartridge has a forward end dispensing nozzle and a rear end inner wall which wall, with the closed end of the body member, defines a chamber. The body member may be axially orificed through the rear closed end to such chamber, and transversely orificed into said axial orifice. The transverse orifice is connected by means of an adaptive inlet element, to a detachable flexible base supplying pressurized air from an outside source. Disposed in the axial orifice may be a plunger type valve urged to a first rearward position, in which the valve is held open to exhaust to the atmosphere any air pressure in the chamber. When the plunger type valve is pressed forward into said chamber to a second position, the exhaust passage is thereby closed and the pressurized air is conducted to the chamber. Thereupon the pressurized air forces the after end cartridge wall constituting a piston, down the cartridge barrel to extrude the viscous material from the opposite nozzle end.
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