In-mold decorating apparatus and method for manufacturing in-mold decorated molded product

An in-mold decorating apparatus for obtaining a resin molded product and, simultaneously, bonding a decorative sheet to a surface of the resin molded product to decorate the surface of the resin molded product,

• the in-mold decorating apparatus comprising:
• a mold assembly that includes a movable mold having a first cavity formation surface on which a first cavity is formed, and a fixed mold having a second cavity formation surface on which a second cavity is formed;
• a decorative sheet supply device for guiding the decorative sheet in a decorative sheet supplying direction to supply the decorative sheet to between the movable mold and the fixed mold;
• and
• an injection molding machine that includes a movable platen for supporting the movable mold at a first platen surface and a fixed platen for supporting the fixed mold at a second platen surface which faces the first platen surface to be parallel with the first platen surface, wherein the injection molding machine shifts the movable platen toward the fixed platen in a state that the decorative sheet is supplied to between the movable mold and the fixed mold, so that the decorative sheet is placed on the first or second cavity, the injection molding machine closes the movable mold and the fixed mold, and then injects molten resin into a cavity space formed by the first and second cavities to obtain the resin molded product,
• wherein the first and second cavity formation surfaces are tilted relative to the first or second platen surface in a direction parallel with the decorative sheet supplying direction,
• wherein the decorative sheet supply device comprises:
• a decorative sheet feed roll having a rotation shaft around which the decorative sheet is wound;
• and
• a guide roller for guiding the decorative sheet fed by rotation of the decorative sheet feed roll in the decorative sheet supplying direction, wherein the guide roller has a rotation shaft arranged in parallel with the rotation shaft of the decorative sheet feed roll, and
• wherein the rotation shaft of the guide roller is tilted relative to the first platen surface at an angle parallel with the first cavity formation surface.