Special mold for vacuum heat transfer printing machine for transferring concave ceramic tray by using film

The invention belongs to the technical field of vacuum heat transfer printing, and provides a mold special for a vacuum heat transfer printing machine for transferring a concave ceramic tray by using a film heat transfer printing film. The mold comprises a flange type metal clamping piece component used for fixing a transfer printing film, a silica gel outer disc support used for bearing a clamping piece, a fixing disc and a bottom support supporting metal component used for connecting other components, and all the components are arranged and assembled into a whole set of mold after being fixed through screws. The film has good stretching and high-temperature-resistant characteristics, the film heat transfer printing film can be fixed through the clamping piece, the tray support and other devices, under the vacuum effect, the film is pressed downwards to the bent part of the tray face, and a picture is completely transferred to the concave ceramic tray through the high-temperature and high-pressure effect; th