US Patent 7847217 Hot-melting method with simultaneous heating and cooling of workpieces

An exemplary hot-melting method includes the following steps. A hot-melting machine (20) is provided. The hot-melting machine includes a rotatable worktable (23), a heater (25), at least one cooler (26), and a plurality of carriers located on the worktable and being uniformly spaced apart. A first workpiece loaded on a first one of the carriers is cooled using the at least one cooler. Simultaneously, a second workpiece loaded on a second one of the carriers is heated using the heater.