Ngk Insulators, Inc.

Takashi Matsukubo

Kenji Yamada

Takao Saito

Seiichiro Hayashi

Keiji Matsumoto

A die for forming the honeycomb structure includes: a plate-like die main body including an introducing portion provided on the side of one surface thereof and having a plurality of back holes and a forming portion provided on the side of the other surface thereof and having slits; and a back plate detachably attached to the surface of the introducing portion and having a plurality of through holes connected to the back holes of the introducing portion. Through hole opening portions of the through holes formed in the back plate in the one surface of the die main body have such an enlarging shape as to enlarge toward the one surface of the die main body. The die for forming the honeycomb structure can decrease the resistance of a forming material during extrusion.

Die for forming honeycomb structure

A die for extrusion molding of a honeycomb which comprises a structure provided with a groovy slit () formed by cell blocks () on a front face thereof, and additionally provided with a puddle inlet, on a back face thereof, communicatively connected with the slit (), wherein each cell block () has a soft film () on a hard film () formed on outermost surfaces of the slit () and puddle inlet fabricated in a cell-block body (). According to the die for extrusion molding of a honeycomb, a dimensional error of the die is possible to be eliminated, a stable force of extrusion friction is possible to be maintained, both extrusion moldability and abrasion resistance are possible to be excellent, and additionally an adjustment of the die at the time of extrusion molding can be performed easily.

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Ogaki, Japan

Takashi Matsukubo