Hot-melting machine with rotatable worktable

A hot-melting machine, comprising:

• a worktable;
• a plurality of carriers located on the worktable and being uniformly spaced apart, each carrier configured for holding a workpiece;
• a heater configured for heating the workpiece;
• at least one cooler configured for cooling the workpiece, the at least one cooler comprising a driving mechanism and a cooling mold disposed at a bottom end of the driving mechanism, the driving mechanism configured to drive the cooling mold to move down and up, and the cooling mold configured to cool the workpiece and comprising a cooling board and a securing board connecting the cooling board to the driving mechanism, the cooling board defining an exit hole running therethrough, the securing board defining an entrance hole, and the entrance hole and the exit hole cooperatively forming a channel;
• and
• a controller configured for driving the worktable to rotate, the heater to move down toward and up away from a corresponding one of the carriers, and the at least one cooler to move down toward and up away from another corresponding one of the carriers, wherein at each of successive stages in operation of the hot-melting machine, one of the carriers is aligned with the heater, another one of the carriers is aligned with the at least one cooler, and a further one of the carriers is positioned such that a workpiece can be unloaded from the further one of the carriers and another workpiece can be loaded on the further one of the carriers.