Heating type pressure chamber structure of cold-chamber die casting machine

The invention relates to a compressing rood used in cold-room casting machine. Wherein, it can keep the temperature of compressing room, effectively compensate the lost heat of metal liquid, and keep high temperature of liquid or semi-solid metal; the color alloy liquid via compressing room interface 4' enters into compressing room 4, to keep temperature via heating system and temperature keeping system, to be punched by punching head; the upper and lower sliding blocks 1, 2 are mounted at one end of compressing room 4; the upper and lower sliding blocks 1, 2 and compressing room 4 are mounted inside the casting machine mould fixing plate 3; the compressing room 4 along circumference has round hole 4'' used to arrange heating rod that heating the compressing room 4; and one end of compressing room 4 at the end cover 7 has compressing room interface 4'; the punching head 5 is mounted at one end of compressing room 4 that opposite to the upper and lower sliding blocks; the end surface of compressing room 4 that near the punching head 5 is mounted with end cover 7 that sealed by sealing ring 8; and the end surface near the compressing room 4 has gas hole 6.