Method for automatically exchanging a stamper unit with another one

摘要

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.