| 摘要 |
A machine (10) that takes screws (39) out of a hopper (32) and delivers them to a screw driving station where they are driven by motor operated screw driver members (24) to secure a hinge to a door and a jamb. Inside the hopper (32), a screw lifting member (36) engages, lifts, aligns and delivers individual screws (39) to a hopper discharge station (39b). Pressurized air blows the screws (39) from their respective discharge stations (39b) onto tracks (35), there being one track (35) associated with each discharge station (39b). Elongate transfer tubes (34) positioned at the discharge end of the tracks (35) deliver the screws (39) to a movable head member (21) which upon receiving a charge of screw members (39) moves downwardly and inwardly to a fixed position screw driving station where a door and jamb are positioned. Screw driver members (24) are brought into driving relation to associated screws (39) by horizontally inward movement of a motor (26) that rotates the screw driver members (24). The downward and inward stroke separates the head member (21) from the transfer tubes (34) and a subsequent return stroke returns the head member (21) to the discharge end of the transfer tubes (34) so that another set of screw members (39) may be charged into the head member (21). Accordingly, the transfer tubes (34) do not move during machine operation. |
