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    • 2. 发明公开
    • SCHLIESSVORRICHTUNG FÜR EINE SPRITZGIESSMASCHINE
    • 封山育林的注塑成型机
    • EP2670575A1
    • 2013-12-11
    • EP12701002.3
    • 2012-01-25
    • KraussMaffei Technologies GmbH
    • PIHAN, VolkerKRABICHLER, GeorgAMMER, Daniel
    • B29C45/67
    • B29C45/6728
    • The invention relates to a closing device for an injection molding machine, comprising a stationary mold platen and a movable mold platen, comprising driving means for moving the movable mold platen relative to the stationary mold platen, comprising columns between the two mold platens, and comprising pressure pads for generating a closing force, each said pressure pad having a cylinder and a piston which can be moved in said cylinder and which is connected to a column. The aim of the invention is to allow a simple disassembly of a column without having to disassemble the corresponding pressure pad as well and remove same from the platen. According to the invention, this is achieved in that the cylinder (5) of one or more of the pressure pads (4) has an opening on each cylinder base (8a, 8b), the diameter of said opening being greater than the diameter of the column (3) associated with said pressure pad (4). An annular gap (9a, 9b) is formed between the column (3) and the cylinder (5) in the region of each cylinder base (8a, 8b). A sleeve (7) is provided through which the column (3) can be passed, said sleeve (7) being connectable to the column in a removable manner. The sleeve (7) has a portion (A) that forms the piston, and the sleeve (7) has an end portion (B, C) at each end of the piston, said end portion extending into one of the annular gaps (9a, 9b).