CROSSHEAD FOR EXTRUDER

PROBLEM TO BE SOLVED: To provide a crosshead for an extruder capable of clamping a cartridge and a crosshead body more rapidly. SOLUTION: The crosshead 1 for the extruder is constituted so that a key projection 7c is provided on the inner peripheral surface 7b of an annular clamping fixture 7 and a key groove 51h, which has the guide groove part 51i into which the key projection 7c of the annular clamping fixture 7 is introduced when the annular clamping fixture 7 is fitted in a fixture attaching part 51b and a lock groove part 51j extending in the almost peripheral direction of the fixture attaching part 51b from the guide groove part 51i to guide the key projection 7c of the annular clamping fixture 7 so that the annular clamping fixture 7 is clamped toward the crosshead body 3 when the annular clamping fixture 7 is fitted in the fixture attaching part 51b to be rotated centering around the fixture attaching part 51b, is provided on the outer peripheral surface of the fixture attaching part 51b of the cartridge 5. COPYRIGHT: (C)2005,JPO&NCIPI