Piling machine for flat items

摘要

A stacking machine for stacking flat items including a first stacking table which descends from a position higher than the infeed end to a stacking position, the separation of a constant flow of flat items in consecutive bundles occurring with this movement, and on which table flat items received from an infeed end are subsequently stacked to form bundles, connected to first displacement means which displace it between a stacking position in which the first stacking table receives flat items and an unloading position in which the bundles are transferred to the unloading means; a second stacking table which descends from a position higher than the infeed end to a stacking position, the separation of a constant flow of flat items in consecutive bundles occurring with this movement, and on which table flat items received from the infeed end are subsequently stacked to form bundles, connected to second displacement means which displace it between a stacking position in which the second stacking table receives flat items and an unloading position in which the bundles are transferred to the unloading means, unloading means for transferring the bundles from the first or second stacking table to a fixed unloading table; coupling means for coupling the unloading means alternatively to the first stacking table or to the second stacking table.

主权项

1. Stacking machine for stacking flat items comprising:
an infeed end for flat items; a discharge end for bundles of flat items; stacking means in which flat items successively received from the infeed end are stacked to form successive bundles from stacks of stacked flat items, wherein the stacking means further comprises: a first stacking table and a second stacking table arranged in respective horizontal planes vertically parallel to one another; first displacement means susceptible to displacing the first stacking table in a longitudinal plane and in a vertical plane at least between a stacking position in which the first stacking table receives flat items to successively form first bundles and an unloading position in which the bundles are successively transferred from the first stacking table to unloading means; second displacement means susceptible to displacing the second stacking table in said longitudinal plane and in said vertical plane at least between said stacking position in which the second stacking table receives flat items to successively form second bundles when the first stacking table is not in said stacking position, and said unloading position in which the bundles are successively transferred from the second stacking table to said unloading means; coupling means to alternatively couple the first stacking table and the second stacking table to the unloading means for collecting successive bundles coming from the stacking tables when said stacking tables are in the stacking position with the already finished bundle and which automatically decouple when the stacking tables are in the standby position; and wherein the first and second displacement means respectively comprise: vertical displacement means for lowering the stacking table with which they are associated from a standby position located above the box infeed end position or level 0, to the initial stacking position, to then lower the stacking table continually and proportionally to the growth of the stack caused by each new flat item deposited on the stack to a final stacking position, and to again raise the stacking table from a longitudinally advanced position located below the unloading position, to the vertical level necessary for carrying out the unloading; longitudinal displacement means for advancing the stacking table with which they are associated horizontally from the stacking position towards the advanced position located below said unloading position and to make the stacking table move back from the unloading position towards the standby position; wherein the unloading means comprise a mobile unloading table longitudinally guided by respective side guiding elements and displaceable between an extended position towards the infeed end and an advanced position towards the discharge end of the machine.