Web product cutting and screening machine and method

摘要

A web product cutting and screening machine includes a first conveying unit having a first movable roller set, a second conveying unit having a second movable roller set movable relative to the first movable roller set and defining with the first movable roller set a first gap therebetween, and a cutter movable across the first gap to cut off a web product, producing a head cut piece, normal cut pieces and a tail cut piece. During screening operation, the second movable roller set can be moved away from the first movable roller set to screen the heat cut piece and the first movable roller set can be moved away from the second movable roller set to screen the tail cut piece, and therefore the web product cutting and screening efficiency is improved.

主权项

1. A web product cutting and screening method, comprising the steps of:
moving a first movable roller set and a second movable roller set to a conveying position and enabling a web product to be delivered by said first movable roller set onto said second movable roller set over a first gap between said first movable roller set and said second movable roller set; cutting off said web product in said first gap to produce a first cut piece; moving said second movable roller set from said conveying position to a non-conveying position far from said first movable roller set for enabling said first cut piece to fall through said first gap; moving said second movable roller set back to said conveying position and keeping said first movable roller set in said conveying position for enabling said web product to be delivered by said first movable roller set over said first gap onto said second conveying unit; cutting off said web product in said first gap during delivery of said web product by said first movable roller set over said first gap onto said second movable roller set to produce at least one second cut piece and a third cut piece; and moving said first movable roller set from said conveying position to a non-conveying position far from said second movable roller set for enabling said third cut piece to fall through said first gap.