| 摘要 |
The present invention is a system for feeding portions of material to an injection molding machine including a feeding means that can be a screw feeder (12), an external container (10), a material hopper (11) with inclined and parallel walls located inside the container, a load cell (16) that is coupled to the material hopper (11) and a controller (13). The system dispenses portions of material in a given time and for given duration. The system dispenses accurate weight portions. The system controls the portion weight by weighing a number of dispensed portions using loss-in-weight of the hopper, divides the weight to the number of portion and when it need, control the spin of the screw feeder motor (14).
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