45°分模的“0”型橡胶圈具有分模痕迹与使用部位不相重合,在一些重要的机器制造业机件上密封、活动封严的优点得到广泛应用。 这种橡胶圈(图1)的特点除了要求在45°分模和尺寸比较严格外,还要求有很好的表面质量:光洁、圆滑,无刀具加工痕迹,错过不得大于0.1MM。 由于压制胶圈的型槽开设在90°的圆锥面上,它的模具制造技术性比平面分模“0”型胶模要强得多,其中尤以模具错模系数显 The 45 ° parting “0” type rubber ring has the advantage that the parting marks are not coincident with the used parts and is sealed on some important machine manufacturing machinery parts, and the active seal is widely used. This rubber ring (Figure 1) in addition to the characteristics required in the 45 ° parting and size is more stringent, but also requires a good surface quality: smooth, sleek, no tool marks, not to be less than 0.1MM. As the press apron groove opened in the 90 ° conical surface, its mold manufacturing technology than the plane parting mold “0” is much stronger, in particular,