Cutter/clamping means for bottom wrap 3/4 wrap apparatus

Details Cutter/clamping means for bottom wrap 3/4 wrap apparatus Cutter/clamping means for bottom wrap 3/4 wrap apparatus

1997-06-13

1999-08-03

Johnson, Linda

Package making

With fugitive preconditioning of cover material

53176, 533893, 533894, 53580, 53586, 83175, 83282, B65B 1108, B65B 2708, B65B 4116

Patent

active

059309750

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 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. A resilient clamping assembly arranged on the mounting plate momentarily clamps the web between the mounting plate and a web guide just prior to severing of the web by the blade, maintaining the web taut during cutting. The cutting blade is rapidly moved back to a position displaced from the web in preparation for a subsequent cutting operation.

REFERENCES:
patent: 3881297 (1975-05-01), Rushforth
patent: 3967767 (1976-07-01), Seragnoli
patent: 3996728 (1976-12-01), Gentili
patent: 4014233 (1977-03-01), Wolfinger et al.
patent: 4620467 (1986-11-01), Margraf et al.
patent: 5009055 (1991-04-01), Simmons
patent: 5103617 (1992-04-01), Sjogren et al.
patent: 5295343 (1994-03-01), Ueda et al.

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