Extrusion molding machine for producing ceramic molding
US6638051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Nov 15, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/766
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extrusion molding machine for producing a ceramic molding is provided in which a ceramic material which has not been kneaded is efficiently introduced to realize a high molding speed. The machine includes a screw extruder and a material introduction portion through which the material is introduced into the screw extruder. The material introduction portion is provided with a casing having an introduction passage connected to a housing of the screw extruder and an opening through which the material is charged, and right and left introduction screws provided in the introduction passage. The introduction screws are provided with lead portions wound in opposite directions and arranged so that the lead portions are engaged substantially in a non-contact state. The introduction screws are rotated so that the material is moved in a direction opposite to the opening at the engagement portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.