| 摘要 |
PURPOSE:To enable magnetic substance to be removed from supply material kneaded and extruded by providing a magnetic field generating member at one place at least of the cylinder, the screw and the mouth piece of an extrusion molding machine. CONSTITUTION:An extruder 10 is composed of a cylinder 11, a screw 12 which presses, transfers and kneads supply material put rotatively into said cylinder 11, the mouth piece 13 installed at the front part of the cylinder 11, the hopper 14 for sending supply material into the cylinder 11 and the driving gear 15 for giving turning effort to the screw 12. A magnet 21, a magnetic field generating member is buried at a section of the internal circumferential surface of the cylinder 11 and the magnet is divided into the upper and the lower part to be opened or closed. |
