| 摘要 |
A double-barreled gun adapted to inject a two component epoxy bonding agent into a hole to anchor a hardware element therein. The base resin and hardener components of the epoxy are stored in seperate foil packs received in parallel barrels of the gun. The gun includes a removable manifold having a pair of end caps which fit into the leading ends of the barrels and are joined to a manifold pipe to whose outlet is attachable a mixing nozzle. Mounted at the rear of each cap across a port therein is a cutting element. Slidable in each barrel behind the pack is a piston whose rod extends from the trailing end of the barrel. A manually or pneumatically driven operating mechanism effects concurrent advance of the pistons to an extent determined by the operating mode of the gun. In an injection mode of gun operation, the advancing pistons force the front ends of the packs against the cutting elements to slit open the packs, the pistons then acting to extrude the components from the packs into the manifold from which the components pass into the mixing nozzle from which the epoxy is discharged. In this mode, the pistons advance short of the cutting elements, the packs then being in a crushed state. In an ejection mode, the manifold is removed to expose the leading ends of the barrels to permit the pistons to advance to a greater extent and thereby eject the crushed packs from the barrels.
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