Injection moulding machine and moulding method

Abstract

An injection moulding machine includes a mould unit (B) and an injection unit (A) for injecting a plasticated resin into the mould unit (B) through an injection nozzle (11), the mould unit (B) including a mould opening-closing means (36), a first mould (31) which is driven to be opened or closed by the mould opening-closing means (36), a second mould (30) which is operated together with the first mould (31) to define a cavity between them and be brought into contact with the injection nozzle (11), a first guiding means (39) for guiding the second mould (30) in such a manner that the second mould can be moved in the mould opening-closing direction, a stroke-regulating means (40) for regulating the length of stroke in the mould opening-closing direction of the second mould (30), and a first energizing means (41) for energizing the second mould (30) in the including of the first mould (31), and the injection unit (A) comprising a second guiding means (8) for guiding the injection nozzle (11) in such a manner that the injection nozzle (11) can be moved in the mould opening-closing direction, a stopper means (10) for defining a limit position of the injection nozzle (11) at which the movement of the injection nozzle (11) in the direction of the second mould (30) is limited, and a second energizing means (9) for energizing the injection nozzle in the direction of the second mould (30), wherein the length of stroke S1 of the second mould caused by the stroke regulating means (40) is set to be equal to or larger than the gap S2 between the second mould (30) and the injection nozzle (11) defined when the moulds (30, 31) are in the open state.

Dependencies are inferred from the claim text.