method and device for metering a viscous fluids, in particular one or mehrkomponentengemisches

摘要

A method and a device for proportioning in particular a high-viscosity mixture with one or more components is described, having at least one piston/cylinder unit for each component, into which unit a feed pump feeds the respective component and the pistons of which are actuated by a pressure source. The method and the device according to the invention are distinguished by the fact that, for controlling the quantity of material discharged per unit of time, the displacement speed of at least one piston of the piston/cylinder unit is detected by means of a sensor (12) and can be controlled to a predeterminable value, and that, to compensate for the pressure variations occurring for example due to the controlling of the displacement speed, a pressure control loop (8) is provided, which has a pressure sensor and a proportional valve (10), which is arranged ahead of a discharge die. IMAGE