Patent ID: 9180611
Filing Date: 2015-11-10
Classification: B29B,B29C

Abstract:
1. A compression-forming system comprising an expansion unit equipped with holding portions for holding molten resin masses, a compression-forming machine equipped with female molds which are conveyed on a circular track, a single temperature sensor and a control unit, wherein said single temperature sensor measures the temperature of a periphery on an outer side of a forming hole of the female mold in a radial direction of rotation of the female mold obliquely from above the female mold in the direction of the rotation, said single temperature sensor measures the temperature of a portion on the outer side of an allowable range in which the molten resin masses are fed to the female molds, said control unit carries out judgment of the presence of the molten resin masses on said portion on the outer side of an allowable range by the temperature of said portion to detect that the molten resin masses are defectively handed over, carries out expansion control of said expansion unit and carries out operation control of said compression-forming machine, and said control unit discontinues the extrusion of the molten resin from the extrusion port to the holding portions and the control unit works to contract the expansion unit if it is decided that the molten resin mass is on the outer side of the allowable range, and brings the compression-forming system to a halt after the molten resin masses still remaining in the holding portions are all handed over to the female molds and formed into a predetermined shape.