Package making – Methods – Applying a partial cover
Patent
1997-06-13
1999-06-29
Johnson, Linda
Package making
Methods
Applying a partial cover
53399, 53141, 53228, 533894, 53466, 53586, B65B 1108, B65B 2708, B65B 4116
Patent
active
059161094
ABSTRACT:
Bottom wrap/three-quarter wrap apparatus having an automatic web feeder for safely advancing a web fed from a supply roll to a main web feeder. The web free end is inserted between a pair of rollers, one being driven by a motor and the other being free-wheelingly mounted. The free-wheeling roller swings about a pivot shaft. A cylinder normally maintains the free-wheeling roller displaced from the drive roller. The insertion of the web past the nip formed by the initial feed rollers is detected by a proximity sensor to pull the free-wheeling roller toward the motor-driven roller pinching the web therebetween. A small motor drives the driven roller, moving the web upwardly and into a nip formed by a main feed roller pair. The small motor is then turned off and the main feed rollers advance one length of the web and a cutter cuts the advanced length, completing one cycle of operation, after which the bottom wrap/three-quarter wrap apparatus is placed under control of a bundle feeder. The main feed roller pair are displaced from one another when the web passes between creasing rollers. When a predetermined length of web has been advanced to the creasing rollers a cutter cylinder moves a blade mounting plate in the cutting direction.
REFERENCES:
patent: 3540182 (1970-11-01), Price
patent: 3710533 (1973-01-01), Burns
patent: 3967767 (1976-07-01), Seragnoli
patent: 4914891 (1990-04-01), Suolahti
patent: 5009055 (1991-04-01), Simmons
patent: 5103617 (1992-04-01), Sjogren et al.
Johnson Linda
Quipp Systems, Inc.
Weinstein Louis
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