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When the manufacture begins, the guide pillar will pull the axis to move back. Through the transmission of bevel gears and spur gears, the threaded core would rotate together with the sprue pillar. Therefore, mould products and aggregate of gating system would be stripped off the machine at the same time.
The threaded core and sprue pillar rotate in completely different direction of rotation. Thus, the thread on them should also have different rotary direction, with the same pitches.