BACKGROUND OF THE INVENTION The present invention relates to a glass-forming apparatus for forming a glass-melted drop body having a mandrel (175) with a mandrel (100) in which a mandrel (175) the servomotor (20) of an artificial cylinder (100) is electrically coupled to a positioning unit (220) connected to a position sensor (220) providing a position control signal along the entire length of its path. The invention further relates to a method of forming a hollow glass slit glass droplet in which a glass slime droplet is inserted into a cavity opening, the cavity cavity is closed and a mandrel (175) is formed to form a semiconductor with a mandrel (175). whereby, by actuating the servomotor (200) of the electromechanical roller (100), the mandrel is propelled from an intermediate "filler" position to a second intermediate position by contacting it with a glass melt drop, (175) is driven out of the semiconductor by actuation of the electromechanical belt roller (100) and retracted to a third rear discharge position from which it stops during the crushing of the mandrel (175), its position along the entire path of the mandrel (175) is continuously measured, and finally the glass semifinished is removed from the cavity. ŕ
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