Mitsubishi Heavy Industries Plastic Technology Co., Ltd.

Honda Motor Co., Ltd.

Hiroto Matsushita

Toshihiko Kariya

Naoki Kato

Yasuo Okochi

Yasuaki Ozeki

Masamitsu Saji

Koji Kubota

Satoshi Miyagawa

Hiroshi Terayama

Naoki Katoh

Ayumi Sakamoto

Shinji Yasuda

Sadao Mori

It is an object to prevent dies from interfering with each other when the dies are closed and effectively prevent overshoot of cavity temperature while efficiently performing heating of the dies. In an injection molding machine for two-material molding including two sets of a first injecting unit and a second injecting unit that respectively plasticize different resin materials and inject and fill the resin materials, prior to performing injection molding on the first injecting unit side on a secondary side, after injection molding on the second injecting unit side on a primary side, heating of the dies is started before 180-degree rotation of a rotary die plate is completed. After the start of heating, until the 180-degree rotation of the rotary die plate is completed, i.e., die closing is performed, die temperatures are maintained within a temperature range set higher than die temperatures during the heating start and lower than die temperatures during injection.

Injection molding machine for two-material molding

In an injection molding machine for two-material molding including two sets of injection unitsthat plasticize different resin materials and injection-fill the materials, a mold clamping unit is a hydraulic mold clamping unit that mold-clamps three sets of die platessimultaneously, a movable die plate opening and closing unitis a movable die plate opening and closing unit driven by an electric motor, a rotational die plate opening and closing unitis a rotational die plate opening and closing unitdriven by an electric motor, and a rotating unit for the rotational die plateis a rotation driving unit driven by an electric motor attached to a reversal pedestal

Injection molding machine for two-material molding and method of controlling the same

Provided is a mold clamping apparatus of a mold having a side wall portion of cantilever shape, by which deformation of the mold side wall portion can be efficiently suppressed. An injection molding machine and injection molding method both using the mold clamping apparatus are also provided. Thereby, molded articles with high quality having no flash generation can be obtained. The mold clamping apparatus comprises a side pusher comprising a pair of supports respectively arranged between adjacent two tie bars out of a plurality of tie bars at positions symmetrical to each other and slidably supported to the tie bars, a moving and positioning means linking the supports to a fixed platen or movable platen and moving the supports to be positioned at a predetermined position and a lateral clamping means provided on each of the pair of supports to push a side face of a fixed mold or movable mold.

Mold clamping apparatus, injection molding machine and injection molding method

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Nagoya, Japan

Hiroto Matsushita