| 摘要 |
PURPOSE:To obtain a metal fitting with vents for a mold which enables the manufacture of articles of uniform quality even when the mold is thinned, by providing a metal fitting with air vents and flange-shaped bodies which project toward the outer periphery and whose ends intrude into the inner surface of a fitting hole made in the mold when the fitting is pushed into said fitting hole. CONSTITUTION:An object metal fitting 30 with vents for a mold is prepared by forming the whole of the fitting in the shape of an inverted cup, providing slit-shaped air vents 32 in the upper side of the fitting, forming a plate-shaped projection 34 in the upper end thereof, and further providing a plurality of flange-shaped bodies 36 projecting toward the outer periphery. This metal fitting 30 with vents for a mold is fitted in the following way: the metal fitting is pushed, from the inside, into a fitting hole H of a mold D having a diameter slightly smaller than the diameter of the flange-shaped bodies 36, and it is further pushed forward with the ends of the flange-shaped bodies 36 intruded into the inner surface of the fitting hole H and is fixed. By this method, the fitting is fixed firm enough not to slip off from the mold D even when the mold is thin, and also is prevented from loosening due to the difference in a thermal expansion coefficient the former and the latter, and thus the metal fitting 30 with vents thus formed can be used very suitably for molding foamed styrol etc. |
