Quality verification system for measurement of raw materials in continuous metering processes using calibration weights

A system for measurement quality verification that forms part of an installation located at a site that manufactures rubber mixtures, the system allowing raw materials to be metered, the system comprising:

• a weighing platform comprising a scale for determining a weight loss of the raw materials, the weighing platform comprising an upper surface, an opposite lower surface and a perimeter;
• a metering device comprising:
• a metering hopper that receives enough of the raw materials that is required for performing one or more rubber mixing processes;
• and
• a metering means that meters the raw materials into the metering hopper in real time;
• a system for applying and removing one or more calibration weights that allows application and removal of the one or more calibration weights relative to the upper surface of the weighing platform, such that each of the one or more calibration weights moves in a reciprocating vertical manner between an applied position, in which the one or more calibration weights are placed on the upper surface of the weighing platform, and a removed position, in which the one or more calibration weights are removed from the weighing platform;
• and
• a motion system that performs reciprocating vertical movement of the metering device, the motion system comprising at least one lift cylinder for raising the metering device from a lowered position, in which the metering device is disposed on the weighing platform, to a raised position, in which the metering device is no longer disposed on the weighing platform.