Device for the quick splicing of paper webs

A device for the quick splicing of two webs, for use with a wrapping machine, comprising conveying means including a pair of rollers (4, 104) both driven at the same peripheral speed for feeding both webs in overlapping relationship at the same speed, with the webs being pressed between said rollers;

• severing means for simultaneously severing both overlapping and running webs, said severing means comprising a blade (10) carried on rotary supporting means and a counterblade (11);
• discarding means (13,14) arranged downstream of the said severing means, for removing a severed portion of one of the webs;
• splicing means (5) for applying adhesive tape onto the cut trailing end of one web and the cut leading end of the other web;
• drawing means (17, 18) comprising a pair of cooperating rollers at least one of which is a driving roller, for drawing the web being spliced at substantially the same speed as the conveying means, with the web being pressed between said rollers, a substantially trough shaped suction groove positioned on the rotary supporting means adjacent to and after the blade (10) in the direction of rotation, said suction groove (52) extending longitudinally along substantially the whole width of the blade and having a depth capable of curling the cut leading end of one web for positive detaching action of the overlapping webs;
• and means for selectively connecting said suction groove (52) with a source of suction to effect web detaching action.