Cutting assembly useful in bag machines

Details Cutting assembly useful in bag machines Cutting assembly useful in bag machines

1978-10-26

1980-10-28

Spruill, R. L.

83831, 83614, B31B 114, B31B 1914

Patent

active

042300290

ABSTRACT:
A bag machine for permitting action on multiple widths of web and capable of high speed operation. A rigidifying beam supports the heat seal bar. The heat seal bar is thermally isolated from the beam and the flange of the beam is protected against heat loss. A belt and sprocket assembly that propels a cutter blade across the web path are aligned in a plane set at an angle to the axis of the beam. The sprockets have diameters comparable to the height of the beam and position the cutter blade adjacent the heat seal bar at the lower edge of the beam. The blade is attached by a plate inserted between teeth of the belt with a corresponding tooth omitted from the sprocket. An insulating heat shield also serves to support a protective curtain and a novel lift arrangement is provided for the entire head assembly and upper nip rolls.

REFERENCES:
patent: 2852048 (1958-09-01), Cox
patent: 3163971 (1965-01-01), Loliger et al.
patent: 3192096 (1965-06-01), Rhine
patent: 3972254 (1976-08-01), Dillinger et al.
patent: 4081009 (1978-03-01), Curlett

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