| 摘要 |
1420138 Sheet ordering apparatus; feeding sheets J BOBST & FILS SA 19 Feb 1973 [7 March 1972] 8093/73 Heading B8R General.-Interconnected box blanks are separated into individual blanks by a bursting apparatus comprising an input conveyer and a more rapidly moving bursting conveyer, the separated blanks then being directed into a series of stacks by a plurality of diverters. Busrsting apparatus.-Sheets of interconnected box blanks formed in a platen press 7, Fig. 2a, are forwarded from a slower moving conveyer 10 (where they are held in contact with the conveyer by a pressing device 13) to a more rapidly moving conveyer 15 upon which the blanks are held by co-operating belts 21. Transverse rows of blanks are thus separated from the sheets and the individual blanks are then separated laterally by the diverging runs of belts 15 and 21. Directing to alternative outlets.-Longitudinal rows of blanks are forwarded into diverter assembly 26 between a plurality of roller pairs 29, 30 and 31, 62 until one blank is above each of a plurality of accumulator chambers 32, Figs. 3 and 9. The rollers 31 are then simultaneously pivoted, Fig. 10a, to direct blanks beneath the guides 64 and into the chambers 32. The pivoting of the rollers 31 is controlled from photocells 28. Forming distinguishable batches.-When a predetermined number of blanks has been accumulated in each of the chambers 32 (as determined by a stack-height detecting photocell) the bottom of each chamber is withdrawn and the small stacks are added to the main stacks on a descending table 34. Between each delivery of small stacks a separating sheet 37 is applied across all the main stacks by a conveyer mechanism 36 which mechanism comprises a conveyer belt 41, Figs. 7 and 8, carried on reciprocable racks 40. The racks are moved to a position overlying the main stacks with a separating sheet carried on the upper run of conveyer 41 and are then returned to their initial position over a supply pile 80 whilst the conveyer 41 is advanced to discharge the sheet. Feeding sheets.-Sheets are separated from the pile 80 by a suction cup 50 which is raised and lowered by a cam surface 49 on one of the racks 40. |
