Hot melting machine

The utility model discloses a hot melting machine which is simple in structure and can realize the operation of mechanically hot-melting and mounting a filter screen sleeve on an original part on which the filter screen sleeve is to be hot-melted and mounted. According to the technical scheme, the hot melting machine comprises a conveying mechanism used for conveying original parts, a filter screen sleeve feeding mechanism used for conveying filter screen sleeves and a jacking hot melting mechanism, and the jacking hot melting mechanism comprises a jacking air cylinder provided with a vertically-arranged jacking shaft and a heat conduction block arranged on the upper portion of the jacking shaft and provided with an electric heating bar. A first clamping groove matched with the filter screen sleeve is formed in the upper portion of the heat conduction block, the conveying mechanism comprises two parallel conveying belts arranged in a spaced mode, a hot melting welding station is arranged at one end of each co