Apparatus for folding paper

Details Apparatus for folding paper Apparatus for folding paper

1999-03-19

2000-07-18

Vo, Peter

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493441, 493448, 493966, 493941, B31F 100

Patent

active

060900326

ABSTRACT:
An apparatus for sequentially forming folds in a sheet of paper which is continuously moving substantially in a single plane. A first fold is formed in the center of the continuously-moving sheet of paper and subsequent pairs of folds are sequentially formed, one on each side of the previously-formed folds, until the entire continuously-moving sheet is folded. Guide wires retain each folded section until the entire sheet is folded by the cyclic upward movement of a continuous flexible wire loop held for free movement on a pair of spaced apart pulley assemblies. Each pulley assembly includes a plurality of evenly spaced pulleys each of which are held for free rotation on a support frame. Each support frame is driven in rotation about a central axis of rotation. Each individual pulley includes a freely rotatable ring surrounding the periphery of the pulley around which the flexible wire loop is held.

REFERENCES:
patent: 3973770 (1976-08-01), Montenbruck
patent: 4310326 (1982-01-01), Bellanca
patent: 5655866 (1997-08-01), Bellanca

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