DEVICE TO CUT TIRES Russian patent published in 2010 - IPC B29B17/00 B29B11/02 

FIELD: process engineering.

SUBSTANCE: device to cut tires along one or simultaneously several cutting lines comprises metal cylinder with recesses and sharpened disk-type metal disk blades arranged in compliance with said recesses, blade thickness notably exceeding cylinder recess width. Metal blades are fitted on rotary shaft with the help of bearings and eccentrics. Said rotary shaft can turn through 180° and be locked in this position, as well as move blades till full contact with side faces of circular recesses and back from the cylinders to make a gap there between. Note hear that gap size and centering error amount are selected from the following relationships: Z≥H and where Z is the width of gap between cylinder outer surface and blade cutting edges.; H is maximum thickness of material being cut; a is centering error, r is recess width; β is the angle between generatrixes of the blade conical surfaces.

EFFECT: complete cutting of both band-type and closed circular articles, reduced load on cylinder shaft and disk blades during initial period when blades penetrate into walls of reinforced material.

3 dwg