Mannesmann Aktiengesellschaft

Mannesmann Demag Kunststofftechnik Zweigniederlassung Der Mannesmann

Hans Bluml

Ernst Wurl

Gerhard Schmidt

Peter Klein

A device for precisely aligning, mating and clamping two injection mold plates, in which device, a first mold plate is rigidly attached to a support table and a second mold plate is slidably guided on parallel guide bars into contact with the first mold plate by at least two symmetrically placed, parallel ball spindles which are driven synchronously by a hydraulic motor.

Injection molding machine having a precision clamping unit

A method and an apparatus for measuring the closing and holding force on the moulding die or tool (6, 7) of a pressure diecasting or injection moulding machine of which the closing device comprises a toggle lever mechanism. Measurement of the closing and holding force takes place by way of measuring a deformation of that end plate (4) on which the bars (1) and the toggle lever mechanism (10) are supported. The bars (1) and the toggle lever mechanism (10) transmit to the end plate (4) forces which produce a bending moment. The bending moment leads to a comparatively large deformation which is therefore readily measured by a measuring device (14, 24) associated with the end plate. By arranging the measuring device (14, 24) at the end plate (4), one also avoids damage to the measuring device (14, 24) by the movable parts of the closing device and access to the pressure diecasting or injection moulding machine by the operator is not impeded (FIG. 1).

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Burgthann, Germany

Hans Bluml