PURPOSE: To always accurately obtain a pellet having a predetermined shape by providing a control means increasing and decreasing the granulation speed of a pelletizer corresponding to the increase and decrease of the supply amt. of a supply mechanism.
CONSTITUTION: When the amt. of the molten resin A supplied to a hopper 6 changes and the level in the hopper 6 changes, this change is detected by a sensor 17 and a control signal is sent to a supply mechanism 3 and a pelletizer 2 from a control box 18. That is, when the level in the hopper 6 lowers, the rotational speed of the motor 15 of a supply mechanism 3 is lowered to reduce the supply amt. of the resin to return the resin level in the hopper 6 to a predetermined amt. At the same time, the rotational speed of the motor 16 of the pelletizer 2 is lowered to alter a granulation speed in proportion to the reduction of the supply amt. When the resin level is raised, the reverse operation is performed.
NAGAMI NOBUKI
IKEDA OSAMU
YAMAZAKI NOBUHIRO
KUWANO HIROYUKI
NAGAOKA TATSUTO
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