The invention relates to a washing
machine upper frame mold for moulding of a washing
machine upper frame. Gate inserts are employed for two connection (point gates and
submarine gates) switching andthrottle valves are added, each
throttle valve can ensure smooth cavity filling and balanced
dissolution flow through adjustment, and the product can be free of
mottle. Ejector blocks adopting ejectorpins are added with
polyurethane elastomer cushions, during mold closing, the ejector blocks and parting surfaces cooperate consistently, during mold opening, the ejector blocks and a shrinkage product cooperate consistently under the action of the
polyurethane elastomer cushions, therefore the problem of product
surface stress mark can be well solved. Compared with the prior art, through point gate and
submarine gate switching, the mold provided by the invention can solve the problem of accelerated
solution flow in the mold so as to shorten the product moulding cycle and better achieve saturation pressure, improve the product
injection moulding stability and reduce the follow-up de-gating process, and by improving the ejection
system, the previous process of heating treatment with a hairdryer can be reduced subsequently, the produce quality is guaranteed, and the appearance can satisfy customers.