METHOD OF POSTFORMING OF GLASS TUBES OR RODS AND DEVICE FOR REALIZATION OF THIS METHOD

摘要

Method of postforming of glass tubes or rods with nonrotating external and/or internal surface to decorative external or internal spiral is realized so, that on external surface of glass tube (1) or rod is touchable affected by perpendicular forces to longitudinal axis of glass tube (1) or rod. With the profit is this force developed by winding-up of longitudinal axis of drawing rolls (3) in the angle equal dimension and in the range to 45 degrees with regard to axis perpendicular to longitudinal axis of glass tube (1) or rod device for realization of this method has at least one couple of rotating drawing rolls (3), in which there is at least one drawing roll (3) forced turned. All drawing rolls (3) are in their longitudinal axis adjustable with regard to axis perpendicular to the direction of drawing of glass tube (1) or rod in the range of the angle up to 45 degrees.