| 摘要 |
PURPOSE: A system is provided a conveyor system with a convenient lifting mechanism that need not be repositioned for differently sized work-pieces, while lifting so that the circuit board bows upwardly and a mechanism for stripping a circuit board from support stops that have positioning pins. CONSTITUTION: A liquid dispensing system(10) has a pair of elongated parallel rails(12,14), and a pair of elongated conveyors(16,18), such as a circuit board, along a direction of travel(22). Rails(12,14) are mounted on a support plate(24) in channels that run transverse to the direction of travel to allow the spacing between the rails to be adjusted. Mounted over the top of the rail are one or more stop plates(40) that serve as edge clamps for workpiece(20) when the conveyors(16,18) are raised. Workpiece(20) is thus pinched between conveyors(16,18) and stop plate(40). certain openings and pockets are formed in the rails for holding components and to provide openings for components such as studs, to pass through. The lifting mechanism has a lifting plate(50) and a camming plate(52), both of which are elongated parallel to rail(12) and to direction of travel(22). A pneumatically activated cylinder(54) is connected to camming plate(52). Cylinder(54) moves camming plate(52) parallel to the direction of travel, and camming plate(52) transfers this side-to-side movement into transverse up-and-down vertical movement by lifting plate(50). The stripping bar is preferably driven in a manner generally similar to that described above, i.e., with a pneumatically operated cylinder that moves a camming plate along the direction of travel, with the camming plate transfers that motion into motion by the stripping bar in a direction transverse to the direction of travel.
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