| 摘要 |
<p>A pneumatically actuatable dispenser for a two-part adhesive, as provided in a cartridge (12) having two chambers (14) and having a mixing nozzle (16) mounted to a first end, each chamber having a plunger accessible from a second end. A front frame (30) holds the cartridge (12). A piston is arranged to be selectively driven within a cylinder (52) in a forward or reverse direction. A pair of piston rods (7) operate in tandem to drive the plungers toward the nozzle (16), when driven conjointly with the piston in the forward direction. A first valve, when actuated, delivers pressurized air driving the piston in the forward direction. A second valve, when actuated, delivers pressurized air driving the piston oppositely. A third valve, when actuated while the first valve is actuated, vents pressurized air from the cylinder (52). A first control rod, which moves conjointly with the piston, and a second control rod (114) may be selectively linked to each other for conjoint movement or unlinked from each other, via a linking lever (140) and a cam (150). An actuator (118), which is positionable adjustably along the second control rod, actuates the third valve after conjoint movement of both control rods and the actuator, along with the piston, by a distance correlating to a controlled dose of the mixed parts of the adhesive. A valve (86) can be manually actuated to divert pressurized air, via a hose, to a nozzle for blowing water or debris from a hole to receive the adhesive.</p> |
