SPRINKLING HEAD AND METHOD FOR SPRINKLING POWDER PATTERNS ON A TRANSPARENT PLATE FOR PREPARING A RELIEF GLASS SUBSTRATE WITH A DURABLE COLOURED PATTERN

摘要

Sprinkling head (2) for sprinkling powder (4) on a glass plate (6). The sprinkling head comprises a frame (8) and one or more delivering devices (16) for delivering a powder to the transparent plate. The one or more delivering devices are mechanically coupled to the frame and comprise:
a container (18) for containing a pigmented powder;
an outlet unit (20) for delivering the power onto the transparent plate, the outlet unit comprising an opening (22) through which the powder is delivered onto the transparent plate;
a vibratable feed channel (26) for feeding the powder from the container to the outlet unit when the feed channel is in a vibrational state, in which state the feed channel vibrates with respect to the frame so that the powder is sprinkled, via the opening, onto the plate, and
an actuator (28) for bringing the feed channel into the vibrational state.