GB1258499A - - Google Patents

Abstract

1,258,499. Slitting. HENRY SIMON Ltd. 2 June, 1970 [10 June, 1969], No. 29208/69. Heading B4B. [Also in Division B6] A slitter/scorer, e.g. for use in producing cases from corrugated board, comprises sets of pairs of slitter/scorer heads lockable in slidably adjustable positions on a head frame 21, which is movable to bring one set of heads 22 into operative position, while the or at least one other set 23 is in a setting up position and a carriage frame 26 supporting carriages 38 for engaging the heads 21 in setting-up position to adjust their spacing in accordance with stored data. Two sets of heads 22 may be provided, one acting on a feed web 25 while the other is being set up for a subsequent process, the frame 21 being pivotable through about 120 degrees between the two positions. For setting, the heads 23 are pneumatically unlocked from their shaft 36, 37 via a line (44) from a pre-programmed control system, Figs. 4-5 (not shown), and respective carriages 38 are coupled to a lead screw 28 by electrically controlled clutches 30, engagement of each clutch for a respective time interval governed by the control system positioning the heads as required as the carriages slide on a guide shaft 29. The heads 23 are then pneumatically relocked before swinging into operative position, the frame 26 being laterally shifted to receive the other head set 22. Setting may be fully automatically controlled by a punched tape (41), or a manual input (42) may be operated.