| 摘要 |
A hot melt adhesive applicator comprises an enclosed wheel glue pot (2) the sides (3, 4, 5) of which fit closely to the sides of the applicator wheel (6), a doctor blade (7) preceding the applicator wheel, an anti-stringout wheel (8) following the applicator wheel, a remote tank (9) forming a reservoir for adhesive, a flexible hose (10) from the tank (9) to the glue pot (2), a pump (11) for feeding adhesive from the tank (9) through the hose (10), heating means for the tank and hose and glue pot, passages (12A, 12B, 13-FIGS. 3 and 6) in one side (5) of the glue pot (2) for feeding adhesive from the hose (10) to a pool (14) between the underside of the doctor blade (7) and the periphery of the applicator wheel (6), and switch means (15) for actuating the pump (11), there also being provided a chamber (16) between the hose (10) and the passages (12A, 12B, 13) in the glue pot (6), with an inlet (17) from the hose (10) and an outlet (18) to the passages (12A, 12B, 13) in the glue pot (2), and adhesive level sensing means (19) in the chamber (16) adapted to operate the switch means (15) when the adhesive level (L) in the chamber (16) falls below a predetermined level.
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