Device for withdrawing and opening cases made of sheet material

Manufacturing container or tube from paper; or other manufacturi – Container or tube erecting – opening – or collapsing – Including overfolding or reverse bending

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Details

493312, 493317, 53566, 53579, B31B 180

Patent

active

055625819

ABSTRACT:
The device has a rotating member including pulleys that and joined to a belt conveyor along which flat folded cases advance. Suction cups are mounted on shafts situated along the periphery of the rotary member and a coaxial drum, rotating in synchrony with the pulleys, carries the shafts which are made to oscillate by crank means. The drum also supports rocking levers which are in engagement with a cam and cause cranks to rotate. Further suction cups, situated at the outlet of the feeding line, are moved in phase relation with the previous suction cups between a gripping position, in which the suction cups grip a flat folded case on opposite sides, and a position in which adjacent wall panels of the case are opened. Belt conveyors receive the opened case and trail it along a packaging line.

REFERENCES:
patent: 2671385 (1954-03-01), Johenning et al.
patent: 3066579 (1962-01-01), Brush
patent: 3599541 (1971-08-01), Allen
patent: 3783752 (1974-01-01), Langen et al.
patent: 3937131 (1976-02-01), Kellogg
patent: 4211153 (1980-07-01), Walter et al.
patent: 4331436 (1982-05-01), Kuttenbaum et al.
patent: 4871348 (1989-10-01), Konaka
patent: 5067937 (1991-11-01), Aschaber et al.
patent: 5207630 (1993-05-01), Decker et al.
The European Search Report dated Jun. 19, 1995.

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