Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof
A molding method and technology of molded products, applied in the field of molding of hollow molded products, hollow molded products and their manufacturing equipment, which can solve the problems of time-consuming melting, increased influence of heat conduction, and damage to resin quality, and achieve good control responsiveness , Miniaturization of the driving device and easy adjustment
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[0018] The manufacturing apparatus of a hollow molded product according to this embodiment is composed of a mold and a heating device. First, the mold according to this embodiment will be described. figure 1 (A) shows the state of the mold clamping related to the present embodiment, and the mold roughly includes: a fixed mold 1; a movable mold 2 that opens and closes relative to the fixed mold; A movable mold 3 driven to slide up and down in the center; and a driving device for driving the movable mold 3, for example, constituted by a piston cylinder unit 4, and the like.
[0019] exist figure 1 In (A), at the upper position of the fixed die 1 , a recess 11 of a predetermined size drawn inward from the parting surface P is formed. The concave portion 11 is used to shape the outer surface of the first semi-molded product A as described below. exist figure 1 In (A), a hemispherical core 12 protrudes from the parting surface P at a position below the fixed die 1 . This core ...
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