(57) The magazine (8) for the cardboard blanks (C) is located in the input part of the
said machine, in line, and outside any higher external profile, and in this magazine
the blanks are stacked on edge, with their greatest dimensions in a vertical plane
and with their flat faces positioned transversely with respect to the direction of
discharge and feed of the said blanks. Means (12-27) cyclically draw the leading blank
from the magazine and deposit the said blank on an inclined ascending conveyor (20)
located under the path along which the products are stored (1) and grouped (2), the
conveyor being provided with pairs of teeth (120) which push the blank from behind
and being connected to programmable driving means, to ensure that, when the format
of the blanks changes, a predetermined part (S) of each blank is always brought into
alignment with the front edge of the group of products (P') formed by the said grouping
line. The product storage line is designed for lateral connection to a line (5, 5')
for feeding the said products (P) which thus do not interfere with the said blank
feed magazine. Downstream from the product grouping line (2), a folder arm (29) carries
out the first raising of the rear panel (C4) of a packaging blank which is already
carrying a group of products, and then the raising of the front panels (C1, C2) of
the following blank, to prepare these panels for the final raising by other means
and to prevent the said panels from interfering with each other, while providing a
reduced interval between the advancing groups of products and having the consequent
objective of increasing the output of the machine.
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