Seiko Epson Corporation

Juri Yamaguchi

Seiichiro Yamashita

Shohei Onodera

Kenta Anegawa

Hidenobu Maruyama

Masayuki Takahashi

Mitsutoshi Kato

Takayuki Sasaki

Masashi Fuchii

Kana Horiuchi

A material discharge device includes: a drive motor; a screw having a groove formation surface and configured to rotate; a barrel having a facing surface and formed with a communication hole through which a plasticized material flows; a heating unit configured to heat the material; a nozzle from which the material is injected to an outside; and a plurality of measurement units configured to measure a pressure or a temperature of the material. The measurement units are disposed at an outer periphery of a nozzle channel wall, and a thickness of the nozzle channel wall satisfies the following (1) or (2): (1) when the nozzle channel wall is made of a material containing iron as a main component, the thickness of the nozzle channel wall is 0.2 mm or more and 2.5 mm or less; and (2) when the nozzle channel wall is made of a material containing aluminum as a main component, the thickness of the nozzle channel wall is 0.2 mm or more and 4 mm or less.

Material discharge device, nozzle, and plasticizing device

A plasticizing device includes: a flat screw that has a groove forming surface on which a spiral first groove is formed, and that rotates; a barrel that has a facing surface facing the groove forming surface and that includes a communication hole through which a plasticizing material flows; a heater that heats resin pellets; and a screw case that accommodates the flat screw and that includes a passage port through which the resin pellets pass toward the flat screw, in which the flat screw has a first side surface on which a first supply port for supplying the resin pellets to the first groove is formed and a second side surface formed on a side farther from the barrel than the first side surface, and a first distance, which is a shortest distance between the first side surface and the screw case, is larger than a second distance, which is a shortest distance between the second side surface and the screw case.

Plasticizing device, three-dimensional shaping device, and injection molding device

An injection molding apparatus includes: a first upstream mold formed with a first gate opening into which a first molding material flows; a second upstream mold formed with a second gate opening into which a second molding material flows; a first injection unit configured to inject the first molding material; a second injection unit configured to inject the second molding material; and a downstream mold configured to be clamped to each of the first upstream mold and the second upstream mold. The first injection unit includes a plasticizing mechanism that plasticizes at least a part of a thermoplastic material containing a thermoplastic resin to generate the first molding material. The second injection unit includes a mechanism that mixes a resin and a curing agent to generate the second molding material that is a thermosetting mixture.

Injection molding apparatus

Growing community of inventors

Matsumoto, Japan

Juri Yamaguchi