Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1984-09-28
1986-06-24
Husar, Francis S.
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493167, 493176, B31B 1126, B31B 144, B31B 128, B31B 152
Patent
active
045965420
ABSTRACT:
A mandrel has its face formed to define a negative impression of reinforcing elements to be formed into the walls of a Bliss box. The reinforcing elements may comprise tubular corner posts and/or intermediate hollow ribs or posts. The mandrel is mounted in a machine frame for reciprocation along its axis so that upon full extension of the mandrel it is disposed within a die cavity in which the Bliss body panel is formed around a pair of upstanding end panels. When fully retracted, the mandrel is positioned beneath and adjacent to a pair of magazines for holding supplies of flat end panel blanks, positioned on opposite sides of a superstructure frame of the mandrel. The superstructure is fitted with spaced pairs of feed pawls, a first set of which strips the flat end panels out of the supply magazines to deliver them to an arrested position, corresponding to the retracted position of the mandrel, as a result of extension of the mandrel. Concurrently, the flaps of each end panel are partially shoed inwardly. Upon subsequent full retraction of the mandrel, the partially folded flaps of the end panels are folded into and have portions formed by post defining impressions of the mandrel face. Upon a subsequent extension of the mandrel, a pair of thus fully formed end panels are fed into the die cavity along with a pre-glued body blank which is erected thereby.
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Husar Francis S.
Mueller Frederick E.
Terrell William E.
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