B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
93/40, 93/45
B31B 3/00 (2006.01) B31B 3/46 (2006.01) B31B 5/00 (2006.01)
Patent
CA 1194719
MECHANISM AND METHOD FOR ASSEMBLING TAPERED, NESTABLE CONTAINERS ABSTRACT OF THE INVENTION Apparatus for forming a tapered, nestable leakproof container having a bottom wall integral with front and back panels and side panels and a triangular connecting panel between additional panels extending from the front and back panels and the side panels, wherein the apparatus comprises a die and a tapered mandrel for forcing a blank through the die. The con- tainer blank is positioned on a support immediately above the die and held in position by guides on the support. Before the tapered mandrel engages the blank, glue is applied to the outer edges of the side panels of the rear wall of the container at the inner surfaces adjacent the outer edges of side panels connected to the rear panel and at the inner surface adjacent the outer edges of the side panels. The blank is forced into the die by the tapered mandrel. Appropriate pressure rollers resist the entry of the mandrel and move outwardly as the mandrel moves into the die moving the blank into the die. These pressure rollers engage firmly against the outer surfaces of the sections of the blank to which the glue has been applied and provide resilient pressure in order to squeeze and spread the glue and to press the glue into formation. The die is thus not a rigid die, but one which may yield to and follow the tapered form of the mandrel. Additional pressure rollers may be provided for the portions of the die engaging the front and back walls of the blank in order to provide firm guidance for the blank. The blank, after being pushed through the die, drops down and is delivered to the user's conveyor.
409781
Marks & Clerk
Sprinter System Incorporated
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