Patent ID: 8240181

Claim:
An extrusion die device comprising: a first die including input and output sides, with the first die further including a shaping hole extending from the input side to the output side; and a second die including a central axis and first and second sides spaced along the central axis, with the second die further including a plurality of guiding holes each extending from the first side to the second side, a plurality of bridges each formed between two of the guiding holes adjacent to each other and extending from an inner periphery of the second die to the central axis for the bridges to meet each other, and a plurality of tongues each having an input end face contiguous to one of the bridges and an output end face, with a projection of the output end face of each of the tongues on the surface of one of the bridges where the input end face disposed having a first angular shift relative to the input end face of the tongue, wherein the second side of the second die is coupled to the input side of the first die, the plurality of tongues is received in the shaping hole, and a passage is formed between each of the tongues and an inner periphery of the shaping hole.