INJECTION PRESS MACHINE AND ITS MOLDING METHOD

摘要

Injection press machine and its moulding method which effect a compression stroke after injection when the compression stroke of a movable mould is effected with respect to a fixed mould. More partic a compression start position is determined by mechanical positioning means, this position is adjustable and the position of the movable mould is detected during the compression stroke so that the stroke displacement for compression can be adjusted and a horizontal alignment between both mould can be always kept. Accordingly, parallelism of the moulds can be held stably even the pressure by injection is applied to them and horizontal alignment of the moulds can be kept during the compression stroke. Since the behaviour of a molten resin inside a cavity at the time of injection becomes always constant, resin moulded articles having stable quality can be obtd. @(30pp Dwg.No.0/15).