Method and device for the manufacture of cleaving tiles and cleaving tile obtained

摘要

Manufacture of cleaving-tiles by extrusion of a ceramic mass into a continuous column, which is cut into mouldings of the desired tile length, which mouldings are subsequently cleft after hardening. The continuous extruded column (2) is passed between forming rollers (9, 10) which provide at least all the side edges of the column with a relief and is next provided at both sides what will be the exposed tile faces, at tile-length intervals and normal to the transport direction with an additional relief, by means of impression instruments (11, 12), and is severed at the place of this additional relief.;Severing of the extruded column at tile length and the application of the additional relief can be effected independently of each other at intervals equal to n x the desired wet-tile length, whereby by preference n is equal to 1.;The column stands preferably on edge and is cut means of two vertical parallel cutting devices (13, 14), disposed at either side of what will be the exposed tile faces, and moving synchronously towards each other.;For the purpose of obtaining mouldings of the correct constant length, the periodic movement of the cutting instruments (13, 14) is coordinated with the travelling speed of the extruded column (2), while, moreover, the actuation mechanisms of the cutting instruments and the impression instruments run synchronously.