无码视频一区二区三区,亚洲精品乱码久久久久久,欧美高清性色生活片免费观看,韩国19禁无遮挡啪啪无码网站,国产午夜亚洲精品不卡

        Factors influencing plastic mold making:

        1. Parting surface

        When the die is closed, the die and the punch are combined.

        2. Structural parts

        They are the sliding block, sloping top block and straight top block of the complex mould.

        3. Mold accuracy

        Including avoiding card, fine positioning, guide post, positioning pin, etc.

        4. Casting system

        It is between the nozzle of injection molding machine and the cavity, which is composed of the main channel, the shunt channel, the gate and the cold material hole.

        5, other

        The shrinkage rate of plastics and the factors affecting the dimensional accuracy of the products, such as mold manufacturing and assembly error, mold wear and so on. In addition, the design of the die and injection mold, should also consider the molding machine process and structural parameters of the match.