| 摘要 |
A sheet is moved into a tray. The height of a bundle is determined as it moves along a conveyor. A belt drive is activated to pinch the delivered sheet and advance it to a swingable applicator whose outfeed end is movable to a position just above the top of the bundle. Information is printed upon the sheet prior to entering the applicator assembly. The sheet is advanced through the applicator assembly at a speed synchronized with bundle speed. The applicator lays the sheet upon the bundle which is then moved to a wrapper. The outlet end of the applicator assembly is moved so that it is positioned just above the bundle receiving the sheet under control of a height sensor. The timing of sheet delivery is a function of bundle speed and bundle height. A microprocessor responsive to a detector sensing the feeding of the sheet to the applicator assembly and responsive to bundle height controls the initiation of advancement of the sheet from the tray. An AC synchronous motor drives the applicator asembly to the desired outfeed height and an encoder detects the height of the applicator outfeed end for feedback control. Preprinting of additional data may be provided off-line and such data may be read prior to insertion of the preprinted sheet into the receiving tray to control the formation of bundles. In order to synchronize the mating of the preprinted sheet with the desired bundle, the sheets containing data relating to such bundles may be temporarily stored through the use of a queuing roller assembly.
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