Corazza WFT Motion Weight Filler

Experience and technological innovation for high precision dosing.

15/05/06 The new continuos motion weight filler Corazza WFT for spreadable and drinkable dairy products incorporates the latest technology in product supply. By means of an Automatic Taring System each container is automatically tared and recorded as it enters the filling carousel and filled to an exact net weight, regardless of container variations. All of the weighing stations are executed with an electronic scale (load cell) connected to the machine integrated microprocessor, which controls the weight based filling operations of each of the weighing stations. Each of the weighing stations works independently and continuously transfers the weight data to the microprocessor during the filling cycle. The filling control phases are:

* Selection of the required filling program on the operator panel. The filling recipes can either be pre-installed or can easily be added at any time.

* Automatic recalibration of each of the weighing stations during each of the machine revolutions. The system, during each of the machine revolutions, and for each of the individual weighing stations, verifies the actual mechanical and electronic status of each load cell and automatically updates the values.

* Empty container control weight (Tara). To achieve a precise net weight of the product to be filled it is required that the exact weight of each of the individual empty containers is checked and recorded prior to filling. If the Tara (empty container weight) is detected to be not within the pre-set acceptable values, the filling sequence is not started and the out-of-spec container is rejected as it exits the filling carousel.

* Controls during the filling phase. To achieve a precise dosing of product, the system optimises the filling curve whilst continuously monitoring the load cell, and generates a signal to interrupt the filling phase by closing the filling valve or to emit a signal to reject a specific container when anomalies during the filling phase are being detected.

* Final check of the final net weight. After the filling, the system performs a final weight control of the filled container. Container net weight (Tare value) and actual value are compared and in case the net weight (filled product weight) is found to be out of the pre-set tolerances a signal to automatically reject the container is emitted.