Nissei Plastic Industrial Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Teichiku Co., Ltd.

Kaoru Yanagisawa

Nobuyuki Nakamura

Haruo Okada

Suinobu Kubota

Yoshiharu Yanagimachi

Masaaki Sunohara

Masaaki Miyahara

Shoji Omiya

Yoshiharu Shima

Tokihalu Nakagawa

Junnosuke Yamawaki

Seiji Inagaki

Apparatus for automatically exchanging a stamper unit with another one for an injection molding machine which is operated for injection-molding a disc or the like includes a case conveyance section and a stamper unit infeed/outfeed section wherein the case conveyance section includes a slide table adapted to move in the longitudinal direction with the aid of a driving unit mounted on a housing, a pair of inside and outside conveyance platforms each adapted to be raised and lowered and a vertically postioned preheating member arranged sidward of the inside conveyance platform. The stamper unit infeed/outfeed section includes an infeed/outfeed path arranged at the fore end part of a driving unit mounted on a platform at the upper part of a frame upwardly extending from a housing and an infeed/outfeed unit arranged behind a suspension unit for provisionally suspending a unit case, the suspension unit being located at the rear part of the infeed/outfeed path. The apparatus is operated to alternately raise and lower the inside and outside conveyance platforms in the conveyance section, temporarily holding each unit case in the infeed/outfeed section and displacing the infeed/outfeed unit in the forward/rearward direction so as to allow a used stamper unit to be exchanged with a new preheated stamper unit.

Apparatus for automatically exchanging a stamper unit with another one

A method for automatically exchanging a stamper unit with another one for an injection molding machine which is operated for injection-molding a disc or the like. The automatic exchanging apparatus substantially includes a case conveyance section and a stamper unit infeed/outfeed section wherein the case conveyance section includes a slide table adapted to move in the longitudinal direction with the aid of a driving unit mounted on a housing, a pair of inside and outside conveyance platforms each adapted to be raised and lowered and a preheating member arranged sidward of the inside conveyance platform with the vertical attitude, while the stamper unit infeed/outfeed section includes an infeed/outfeed path arranged at the fore end part of a driving unit mounted on a platform at the upper part of a frame upwardly extending from a housing and an infeed/outfeed unit arranged behind a suspension unit for provisionally suspending a unit case, the suspension unit being located at the rear part of the infeed/outfeed path. The automatic exchanging method is practiced by way of steps of alternately raising up and lowering the inside and outside conveyance platforms in the conveyance section, temporarily holding each unit case in the infeed/outfeed section and displacing the infeed/outfeed unit in the forward/rearward direction so as to allow a used stamper unit to be exchanged with a new preheated stamper unit.

Method for automatically exchanging a stamper unit with another one

The present invention provides a mold clamp apparatus having a novel construction wherein, though the advance of the movable platen is blocked, it is possible to perform a powerful mold clamping operation as in case of a direct compression operation, and it is also possible to make a support of the movable platen accurate by connecting the tie bar to the fixed platen, and further it is also possible to perform a high-speed mold-closing operation and a powerful mold-clamping operation continuously.

Mold clamp apparatus for molding machine

An upright injection-compression pressing machine for the manufacture of information carrier discs, such as photograph records and video discs, has a mold clamper assembly including a pair of stamper bearing molds movable relative to each other in a vertical direction towards and away from each other, and an injector assembly mounted on the clamper assembly in alignment with the direction of the relative movement of the molds.

Upright injection-compression pressing machine for the manufacture of

Growing community of inventors

Sakaki, Japan

Kaoru Yanagisawa