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Filling station for boxes with integrated scale

Task: Removal and packaging and weighing of injection moulded parts in cartons

Various technical parts with a large number of cavities are produced on a fast-running injection moulding machine.
In the first step, the parts have to be transported away parallelly to the machine axis.
The products have to be packed into cartons after a certain cooling period, whereby the quantity has to be determined via a weighing process.
The machine should store a maximum of four empty cartons and four filled cartons (plus one carton in the filling position).
The available space at the machine is quite narrow.

Solution: Slim conveyor belt combination with container receptacles, scales and buffer roller conveyor

Machine discharge by means of an angled conveyor belt type NL-special with feeding hopper, increased lateral guidance as well as transfer chute mounted at the outlet for parts transfer to a succeeding conveyor.
Deposit onto a straight conveyor belt type GL, controlled via a frequency converter, in order to be able to cool down the components in a controlled manner and to enable fine dosing at the belt outlet.
The straight conveyor belt is mounted above a feed roller conveyor for empty cartons.
The feeding roller conveyor is equipped with pneumatic stop and separation cylinders to transfer the cartons individually to a scale conveyor.
Scale conveyor picks up one carton in the filling position. Each carton is tared after reaching the filling position and the filling process is started via the straight cooling conveyor.
When a certain percentage total fill is reached, the cooling belt switches to a lower speed to allow fine dosing. Once the target number of pieces is reached, the cooling belt stops and goes backwards for a short distance to prevent parts from falling unintentionally.
Then, the filled carton is transported on to the buffer roller conveyor.
Above the roller conveyor with the filled cartons, there is a label printer holder provided by the customer.