Die for extrusion forming of honeycomb formed body, and method of forming honeycomb formed body

摘要

Provided is a die for extrusion forming for extrusion forming of a honeycomb formed body comprising a honeycomb forming die having a structure that there is provided at a surface a groove-like slit in a form of a cell block as well as there is provided at a backside a clay introduction hole in communication with the slit, and a frame-shaped presser plate that is disposed at an outer peripheral portion of the honeycomb forming die and that regulates a shape and dimension of a honeycomb formed body. Among the cell blocks, in an extrusion direction of forming clay, a cell block which end face is positioned to be overlapped with an inner circumferential surface of the presser plate is formed to be shorter than the other cell blocks resided inside the inner circumferential surface of the presser plate.

主权项

1. A die for extrusion forming of a honeycomb formed body comprising a honeycomb forming die having a structure that there is provided at a surface a groove-like slit in a form of a cell block as well as there is provided at a backside a clay introduction hole in communication with said slit; and a frame-shaped presser plate that is disposed at an outer peripheral portion of the honeycomb forming die and that regulates a shape and dimension of a honeycomb formed body,
wherein among said cell blocks, in an extrusion direction of forming clay, a cell block whose end face is positioned to be overlapped with an inner circumferential surface of said presser plate is formed to be shorter than the other cell blocks resided outside the inner circumferential surface of said presser plate as well as positioned immediately adjacent to the cell block whose end face is positioned to be overlapped with said inner circumferential surface of said presser plate, and an end face of a cell block positioned to be completely overlapped with said presser plate is provided with a tapered incline, whereby a space is formed between the presser plate and the cell block.