摘要:
A method and an apparatus for forming a plurality of types of cases which differ in the position of the identification holes, or the like, is provided. The invention can curb equipment costs and help reduce production costs as a result of minimizing the types of molds to be prepared by making shared used of the molds, and can greatly reduce the work required to change the type of case to be molded. The insertion/removal, fixing, or positioning adjustment of the bush pin which forms the identification hole by projecting into the interior of the cavity of the mold forming the case is conducted by a fixing member which passes through the bush pin and screws into the mold, and which can be manipulated from the parting face side of the mold when the cavity is opened.
摘要:
A photo film cassette includes a spool core, on which the photo film is wound in a form of roll. A cassette shell contains the spool core in rotatable fashion. First and second flanges are respectively secured to ends of the spool core, for regulating positions of sides of the photo film roll. A first ring-like lip is formed integrally with a periphery of the first flange, is projected toward the roll, is contacted on one edge of an outermost turn of the roll, and prevent the roll from being loosened. The first and second flanges are formed from resin in accordance with injection molding. The resin has temperature of thermal deformation being 80° C. or higher under 18.6 kg/cm2, modulus in elasticity in flexure being 13,000-30,000 kg/cm2, surface hardness being 80 or more in Rockwell R-scale, and high fluidity in molds for the injection molding. The first and second flanges have an outer diameter of 15 mm or more, thickness of 0.3 mm or less, and a maximum projected area of 100 mm2 or more as measured with a contour thereof kept substantially circular.
摘要翻译:摄影胶片盒包括卷轴芯,照相胶片以卷的形式卷绕在其上。 盒式壳体以可旋转的方式包含卷轴芯。 第一和第二凸缘分别固定到卷轴芯的端部,用于调节摄影胶卷的侧面的位置。 与第一凸缘的周边一体形成的第一环形唇部朝向辊子突出,在辊的最外侧的一个边缘处接触,并且防止卷筒松动。 第一和第二凸缘根据注射成型由树脂形成。 该树脂的热变形温度为80℃以上,18.6kg / cm 2以下,弯曲弹性模量为13,000〜30,000kg / cm 2,洛氏R级表面硬度为80以上,模具中流动性高 用于注射成型。 第一和第二凸缘的外径为15mm以上,厚度为0.3mm以下,最大投影面积为100mm 2以上,其轮廓保持大致圆形。
摘要:
A photo film cassette includes a spool core, on which the photo film is wound in a form of roll. A cassette shell contains the spool core in rotatable fashion. First and second flanges are respectively secured to ends of the spool core, for regulating positions of sides of the photo film roll. A first ring-like lip is formed integrally with a periphery of the first flange, is projected toward the roll, is contacted on one edge of an outermost turn of the roll, and prevent the roll from being loosened. The first and second flanges are formed from resin in accordance with injection molding. The resin has temperature of thermal deformation being 80.degree. C. or higher under 18.6 kg/cm.sup.2, modulus in elasticity in flexure being 13,000-30,000 kg/cm.sup.2, surface hardness being 80 or more in Rockwell R-scale, and high fluidity in molds for the injection molding. The first and second flanges have an outer diameter of 15 mm or more, thickness of 0.3 mm or less, and a maximum projected area of 100 mm.sup.2 or more as measured with a contour thereof kept substantially circular.