FIELD: manufacture of parts from plastics provided with external undercutting by direct compression molding method.
SUBSTANCE: proposed device has at least one direct compression molding unit which consists of upper mold half-punch and lower mold half-die, units for motion of these mold halves between open position when portion of plastic is loaded into mold half-die and closed position when molding is carried out. Mold half-punch has plunger and pusher connected with plunger for removal of molded article. Device is also provided with bush which is located on the outside coaxially relative to plunger, many sectors for molding the embossed parts and undercutting of external surface of article. Sectors are engageable with bush in axial direction and may be opened relative to plunger. Provision is also made for units for motion of sectors between position which ensures conjugation with plunger required for direct compression molding and molding of embossed parts and undercutting and open position when molded articles is withdrawn from plunger.
EFFECT: easy removal of molded articles with undercutting on external surface keeping it intact.
7 cl, 10 dwg
