I 2.4 - GLAZING INNER SURFACES
On certain highly demanding markets, compliance with ever-more stringent aesthetic, functional and hygiene standards is expected to last throughout the working life of the sanitarvware piece. Glazing of the inner parts of a WC bowl are no exception; this can be done manually by filling the bowl w ith glaze and then
expelling it through the outlet by turning the bowl over, or with the aid ol more sophisticated automatic systems:
12.4.1 Siphon glazer
This system allows for complete glazing of" the bowl, the rim (open rims only), the siphon chamber and outlet section. The Gaiotto (Inner*) siphon glazer consists of:
I laudiing system;
Glaze delivery assembly (pump, tank and circuit).
The robot end-hook hitches on the bowl and glaze is applied all along the top of the rim. The excess glaze flows down the sides of the bowl, coaling them. A laser-guided position detector on the robot arm ensures that movements are carried out in the required sequence; the robot replaces the jot-type siphon glazing tool. The bowl is then rotated to a vertical position via a rotary manipulating unit : called 'Stargate') and any excess glaze run-off is collected in a special tank at the siphon outlet before being re-used to minimise consumption and waste. During this phase, the rim glazing tool is returned to the robot to help minimise the overall process time.
Compared to the manual system:
less glaze is required thanks to excess glaze recycling;
excellent glazing repeatability;
outstanding flexibility thanks to special adjustment devices that allow for adaptation to the various model types;
the system is less labour-intensive.
Date: 2015-04-20; view: 822