Gateless molding method of thermoplastic resin product and molding device thereof

摘要

1. The present invention relates to a gateless molding method of a thermoplastic resin product by ultrasonic energy. The present invention also relates to an apparatus for molding a gateless product of a thermoplastic resin product in which ultrasonic vibration means are constituted.;2. Conventionally, when a high-precision resin product, a complicated shape, or a shape having a significant unevenness is laid, it is necessary to increase the rigidity and machining degree of the mold, to require a high degree of skill in determining the position of the gate , Which is an unnecessary part at the time of molding, and there is a problem that the material is lost. The present invention seeks to solve the above problems.;3. The present invention relates to a method for manufacturing a synthetic resin molding, which comprises applying ultrasound energy to a thermoplastic resin as a molding material placed in a mold for molding a synthetic resin, melting or softening the molding material directly in the mold by the ultrasonic energy, Wherein the softened molding material is solidified to be subjected to gateless molding, characterized in that a cavity is formed between the male mold and the female mold, and the male mold and the female mold Characterized in that an ultrasonic vacuum means is provided on at least one side of the mold so as to perform the gateless molding by the ultrasonic vibration means. The apparatus for molding a gateless product of a thermoplastic resin product further comprises a cavity And one side of the cavity is formed into a horn which is vibrated by ultrasonic waves, By installing a vibration means, by means of ultrasonic vibration, to a gate-less molding apparatus of the thermoplastic resin product, characterized in that the so that the gate-less molding.;4. According to the present invention, the molding means is remarkably simplified, and a finished thermoplastic resin product can be stably obtained. The mold structure is remarkably simplified, the production of the mold is remarkably laborious, and the molding machine and the like are also simplified, which is optimal for reducing the cost of the resin product.