High speed quarter-folder
First Claim
1. A quarter-folder for folding papers and the like, said quarter-folder including conveyor means for holding a paper to be folded and for moving said paper along a path, a plurality of pairs of folding rolls, each pair of said folding rolls defining a nip located along said path, the axes of all rolls of said plurality of pairs of folding rolls being obliquely oriented with respect to said path such that said axes form an acute angle with an incoming paper held by said conveyor means, means for urging a portion of said paper into said nip of the first pair of said plurality of pairs of folding rolls and means for driving said rolls for urging said paper between said rolls, each pair of rolls subsequent to said first pair of folding rolls of said plurality of pairs of folding rolls being so located as to receive said paper from the preceding pair of folding rolls.
1 Assignment
0 Petitions
Accused Products
Abstract
A quarter-folder operates at high speed by reducing the leading edge to leading edge distance between successive papers, and continuing to move the papers forward while urging the papers down between folding rolls. The folding rolls are obliquely disposed so that a tucking blade urges a portion of the paper between the rolls, and the angular disposition causes the paper to continue. A plurality of pairs of folding rolls receives a paper for complete folding. Retarding brush rollers will slow the folded paper to be received by a conventional creel.
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Citations
15 Claims
- 1. A quarter-folder for folding papers and the like, said quarter-folder including conveyor means for holding a paper to be folded and for moving said paper along a path, a plurality of pairs of folding rolls, each pair of said folding rolls defining a nip located along said path, the axes of all rolls of said plurality of pairs of folding rolls being obliquely oriented with respect to said path such that said axes form an acute angle with an incoming paper held by said conveyor means, means for urging a portion of said paper into said nip of the first pair of said plurality of pairs of folding rolls and means for driving said rolls for urging said paper between said rolls, each pair of rolls subsequent to said first pair of folding rolls of said plurality of pairs of folding rolls being so located as to receive said paper from the preceding pair of folding rolls.
- 10. A method for quarter-folding papers and the like, said method comprising the steps of feeding a paper to be folded in a first direction along a path, engaging said paper with a tucking blade to form a V-fold in said paper, and grasping said V-fold with the nip of a first pair of folding rolls obliquely disposed with respect to said path with the axes of said folding rolls forming an acute angle with the path of a paper passing between said folding rolls, so that said paper is moved downwardly while continuing in said first direction in passing between said pair of folding rolls.
Specification