Multi-component injection moulding machine

A multi-component injection moulding machine (1), comprising a machine bed, at least two mould mounting plates (2) that can be moved relative to each other by means of a closing unit, an injection unit (3), and an extruder unit (4), wherein

• the injection unit (3) can be moved relative to the adjacent plate (2) and comprises a nozzle (7) with a nozzle head (8), and the extruder unit (4) can be adjusted between a first position in which a nozzle support (19) of the extruder unit (4) is in contact with the nozzle head (8), and a second position in which the injection unit (3) is released for possible contact of its nozzle head (8) with a tool clamped on the adjacent mould mounting plate (2),
• wherein the first position the extruder unit (4) and the injection unit (3) can be coupled directly to each other by means of a coupling device (30) in that the extruder unit (4) comprises a coupling unit (17) which has at least one second clamping element (22) cooperating, by mechanical interlock, with at least one first clamping element (11) provided on the injection unit (3), such that the coupling device (30) provides a pressing force of the nozzle head (8) on the nozzle support (19).