High-speed foil feeding device of bronzing machine

The invention relates to a bronzing machine, belonging to printing machinery, in particular to a digital high-speed foil feeding device of a bronzing machine. The digital high-speed foil feeding device comprises a main driving system and a base plate of the foil feeding device, wherein the base plate of the foil feeding device is provided with a transverse linear guide rail body, the transverse linear guide rail body is provided with a composite slider, both sides of the composite slider are provided with a left bearing plate and a right bearing plate, the output end of the main driving system is a fixed-length roller, both ends of the fixed-length roller are respectively arranged in the middle parts of the left bearing plate and the right bearing plate, both the left bearing plate and the right bearing plate are provided with a longitudinal linear guide rail, each longitudinal linear guide rail is provided with a composite slider, the composite slider arranged on the left bearing plate is provided with a first servo driving system and a second servo driving system, the output ends of the first servo driving system and the second servo driving system are respectively provided witha first rolling mandrel assembly and a second rolling mandrel assembly, and both the left bearing plate and the right bearing plate are provided with a foil uncoiling and tensioning cylinder and a foil coiling and tensioning cylinder. The invention has the advantages of simple structure and self-synchronous foil uncoiling and foil coiling.