Mould structure design for four-way valve with internal thread
The structure of the four-way regulating valve was analyzed,the two-plate injection mould with two cavities was adopted.The orifice where the internal thread was located was ar-ranged in the cavity of the moving half of the mould,and the other three orifices were formed by two half-sliders.The diverting channel was arranged on the opposite side of the two sliders,adopt-ing the shape of horn submarine gate.A set of automatic demoulding structure was designed for in-ternal thread on the product.The"hydraulic motor + worm gear"transmission mechanism was in-stalled on the mould to drive the threaded core to rotate automatically.According to the structure of the plastic,the core of the inner thread pipe mouth was divided into inner and outer layers.The outer core was the threaded core,which could be rotated,while the inner core needs to be fitted with the transverse core pulling,which couldn't be rotated.Also,the through cooling system was designed according to the mould structure.
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