| 摘要 |
An applicator gun for pinch fasteners of the type resembling a large-headed nail used for securing thick, soft slabs of insulation material to sheet metal, the shank of said fastener being adapted to pierce said insulation slab to abut the underlying sheet metal, and being specially formed to pinch and permanently grip said sheet metal responsively to hammer blows delivered to the head of said fastener, said applicator gun consisting of a carriage movable on a rail above a table supporting said sheet metal and insulation panels, a pneumatic hammer carried by the carriage with its head normally retracted above said panels, a feed mechanism carried by said carriage and operable to deliver fasteners one at a time to said hammer head while in its retracted position, said fastener being retained magnetically on said hammer head, hammer control mechanism carried by said carriage and operable to advance said hammer to cause the shank of said fastener to pierce said insulation and abut said sheet metal, and then to actuate said hammer to deliver hammer blows to the head of said fastener, a single lever operable to control both said feed mechanism and said hammer control mechanism, and an interlock operable to prevent any possible interference between said feed mechanism and said hammer.
|
