A hand-held hot melt glue gun having a melt chamber 8, a needle 12 and a nozzle 14 that is movable with respect to the needle to open or close a discharge port 26 in fluid communication with the melt chamber 8. A spring closure 30 urges the needle 12 and nozzle 14 toward relative positions to close the discharge port 26. An opening element 34 moves the nozzle 14 with respect to the needle 12 to open the discharge port 26, and a trigger mechanism 40, 50, 52 is provided for advancing solid glue 6 into the melt chamber 8 and for operating the opening element 34. A time delay mechanism 53, 56 provides a time delay between the opening of the discharge port 26 and advancement of glue 6 into the melt chamber 8.
展开▼
