| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an extrusion molding device with low maintenance frequency and high productivity, that can mold an extrusion molded product having a hollow part and a rib in the inside with excellent dimension accuracy. <P>SOLUTION: The extrusion molding device includes: an extrusion molding die having an outer die for regulating the outer shape of a resin member and a core for regulating the inner shape of the resin member; an extruder for injecting a melted resin to the extrusion molding die; a magnetic sizing core where a through-hole is opened; a sizing outer die surrounding the sizing core; a support rod whose one end side is inserted to the through-hole of the sizing core, and the other end side is fixed to the core of the extrusion molding die; and a stopper for regulating movement in the axial direction of the support rod of the sizing core. To the sizing outer die, a plurality of magnets and a plurality of electromagnets are fixed, the magnetic force of the electromagnets is adjusted, and the position of the sizing core to the sizing outer die is adjusted. <P>COPYRIGHT: (C)2013,JPO&INPIT |
