| 摘要 |
PROBLEM TO BE SOLVED: To provide an extruder which can eliminate the rotation habit of a molding while suppressing a conveyance load when a raw material is extruded. SOLUTION: The extruder has an extrusion chamber 21 having an extrusion screw conveyer 24 conveying the raw material containing clay as a main component, a nozzle 41 having a discharge opening 42a for the raw material, a cylindrical rotator 30 set rotatably between the extrusion chamber 21 and the nozzle 41, a driving means 35 rotating the rotator 30, and auxiliary conveyance means 110 which are arranged in the rotator 30 and make the raw material flow toward the nozzle 41 while revolving it by being rotated integrally with the screw conveyer 24. The rotator 30 has revolving flow means 100 which make the raw material flow toward the nozzle 41 while revolving it by being rotated oppositely to the rotational direction of the screw conveyer 24 by the driving means 35. The revolving flow means 100 are arranged at intervals along the axis of the rotator 30. The auxiliary conveyance means 110 are arranged between the adjacent revolving flow means 100. COPYRIGHT: (C)2006,JPO&NCIPI
|
