Injection molding unit

Details Injection molding unit Injection molding unit

B - Operations, Transporting

29

C

18/680

B29C 45/54 (2006.01) B29C 45/17 (2006.01)

Patent

CA 1254013

ABSTRACT OF THE DISCLOSURE An injection molding machine includes an injection mold assembly, an injection molding unit, and a drive for inserting the injection molding unit on and withdrawing it from the injection mold assembly. The injection molding unit includes a carrier block, a plasticizing cylinder projecting into a central longitudinal bore of the carrier block, a feed screw coaxially received in the plasticizing cylinder, and a coupling for releasably axially immobilizing the plasticizing cylinder in the carrier block. The coupling has a plurality of locking bolts radially slidably supported on radial guide faces of the carrier block. The locking bolts have a locking position in which they project into a circumferential locking groove of the plasticizing cylinder and an unlocking position in which the locking bolts are, by a drive, radially withdrawn from the circumferential locking groove. A drive is operatively connected to the plasticizing cylinder for moving it out of the carrier block in the course of an axial releasing stroke. There is further provided a stationarily held support component supporting the plasticizing cylinder after removal thereof from the carrier block during the releasing stroke, and a stationarily supported stopping device arranged to be brought into an abutting engagement with the plasticizing cylinder externally of the carrier block for stopping the plasticizing cylinder when it is withdrawn from the injection mold assembly. - 1 -

506693

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