Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof

Abstract

Provided is a method for manufacturing a hollow molding article, a hollow molding article and a manufacturing apparatus thereof, capable of melting the neighborhood of a combining end-face surface only instantly, molding with a higher dimensional precision, and obtaining a sufficient bond strength. By means of a movable mold (3) and a fixed mold (1), a first and a second semi-molding articles (A, B) are molded with combining end-faces (a, b), the movable mold (3) is moved under a residual state of the second semi-molding article (B) to match each combining end-face (a, b), in the interim a heater (41) formed by a halogen heater or a carbon heater is inserted to melt the combining end-face, the heater is fetched back after melting the combining end-face, the molds is closed to fuse the combining end-face.

Description

technical field [0001] The present invention relates to a molding method of a hollow molded product, a hollow molded product obtained by carrying out the molding method, and a manufacturing device thereof, wherein, in one molding, a movable mold and a fixed mold that can be closed are used to make a pair of The half-molded product is integrally molded with joint end faces, and in a state where one half-molded product remains on the fixed die and the other half-molded product remains on the movable die, the movable die is moved relative to the fixed die, and the paired The semi-formed products face each other with the joint end faces separated, insert a heating body between them, melt the joint end faces, retract the above-mentioned heating body, close the mold, fuse the joint end faces, and obtain hollow molding from the paired semi-formed products Taste. Background technique [0002] A molding method using an injection molding machine is known as one of methods for manufac...

AI Technical Summary

Problems solved by technology

Also, melting takes time, so the resin is heated for a long time and the quality may suffer

Furthermore, the influence of heat conduction also becomes larger

That is, when the heating time is long, the air around the heating body is also heated, and the heated air heats the resin in a wide range, so there is a problem that the quality of the resin is further deteriorated.

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