EXTRUSION FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To change wall thicknesses and dimensions (outside and inside dimensions) of a hollow member of framework by changing a configuration of an extrusion forming mouth. SOLUTION: An extrusion forming apparatus 10 comprises a No.1 die 12 wherein No.1-No.4 opening sections 18a-18d are formed and a No.2 die 14 wherein No.5-No.8 opening sections 70a-70d are formed. No.1 dies 30a-30d consisting of No.1 down dies 32a-32d and No.1 up dies 34a-34d are provided at each position in the No.1-No.4 opening sections 18a-18d and No.2 dies 80a-80d consisting of No.2 down dies 82a-82d and No.2 up dies 84a-84d are provided at each position in the No.5-No.8 opening sections 70a-70d. No.1 extrusion forming mouths 46a-46d are defined by No.1 down dies 32a-32d and No.1 dies 34a-34d and No.2 extrusion forming mouths 94a-94d are defined by No.2 down dies 82a-82d and No.2 up dies 84a-84d.