<cite id="6sw0k"></cite>
  • <strike id="6sw0k"></strike>
    <fieldset id="6sw0k"><table id="6sw0k"></table></fieldset>
      <tfoot id="6sw0k"></tfoot>
      <fieldset id="6sw0k"></fieldset>
    • <ul id="6sw0k"><sup id="6sw0k"></sup></ul>

      23898.cn-亚洲精品国产专区91在线,亚洲色偷拍另类无码专区,亚洲啪啪AV无码片,久久69无码一区二区三区

      Welcome to hongqing!

      Service hotline:0769-83342081     Email:sales@www.23898.cn

      Influence factors of plastic mould making

              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.

              

      国产一级a毛一级a看免费视频| 无人区一码卡二卡三乱码| 国产成人亚洲精品图片| zσzσzσ女人极品另类| 一本大道色卡1卡2卡3| 欧美 亚洲 中文 国产 综合| 特级西西人体444www高清大胆| 樱花动漫官网官方进入网页版| 国产成人精品AA毛片| 国产精品99|