| 摘要 |
PROBLEM TO BE SOLVED: To prevent moldings from becoming curved and improve the flatness of a joint interface between ceramic layers constituting moldings when molding the laminated moldings of ceramics by extrusion. SOLUTION: Each of bodies 15A, 15B for green moldings is stored in each of cylinder parts 14A, 14B. Each of the bodies 15A, 15B is extruded into a mouthpiece molding part with the help of extrusion mechanisms 13A, 13B. Each of the extrusion mechanisms 13A, 13B is driven by hydraulic cylinders 6A, 6B. Oil is supplied to and drain from each of the hydraulic cylinders 6A, 6B using a hydraulic pumping mechanism 3. The position of each of the extrusion mechanisms 13A, 13B is measures. Oil quantity control mechanisms 2A, 2B are interposed between spaces 10A, 10B on the forward sides of the interior of the hydraulic cylinders 6A, 6B and the hydraulic pumping mechanism 3. The quantity of an oil drained to the hydraulic pumping mechanism 3 from the spaces 10A, 10B on the forward sides in the hydraulic cylinders 6A, 6B is controlled by an oil quantity control mechanism 2 in accordance with the measurement position of each of the extrusion mechanisms 13A, 13B. |
