Ring type elastic fixed extruding pad of aluminum profile extruding machine

The invention relates to a high-efficiency, durable, quick-replacing and automatic ring type elastic fixed extruding pad for thermal extrusion on an aluminum profile. The ring type elastic fixed extruding pad comprises an extruding pad core block and an outer ring type elastic extruding pad ring connected to the outer side of the front end of the fixed extruding pad core block, wherein the front end of the outer ring type elastic extruding pad ring is one end which is in contact with an aluminum blank; an annular groove is formed in the front end of the extruding pad core block; the outer extruding pad ring is filled in the groove; the front end of the extruding pad core block is a conical body with a narrower front part and a wider rear part; the outer extruding pad ring is a ring type elastic ring; the contact surfaces of the outer extruding pad ring and the fixed extruding pad core block have matched tapers; a limiting block is arranged between the outer extruding pad ring and the fixed extruding pad core