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        怎么來確定注塑模具澆口截面的大小呢?

        來源:http://www.lasagnafarm.com/ 日期:2022-04-04

          今天小編為大家帶來的一個相關知識便是怎么來確定注塑模具澆口截面的大小,希望能夠讓您更加了解注塑模具,以便以后更好的使用工作。
          Today xiaobian for you to bring a related knowledge is how to determine the size of the injection mold gate section, I hope to let you know more about the injection mold, so that the future better use of work.
          按照山東模具制造廠家的常規,澆口的截面尺寸要小,不能大。在確定澆口尺寸時,應先變小,然后在試模過程中,根據型腔的填充情況進行修正,特別是對于一模有多個型腔的模具,通過修正,每一個同時可以均勻地填充型腔。
          According to the general practice of Shandong mold manufacturers, the section size of the gate should be small, not large. In the determination of gate size, should be smaller first, and then in the mold test process, according to the cavity filling situation for correction, especially for a mold with multiple cavities, through correction, each can fill the cavity evenly at the same time.
          為防止應力引起變形,一般澆口要??;為了防止縮痕,澆口要厚;如果充填不足,則要寬,在模具允許范圍內,澆口和流道的長度要短。曲折少為好;影響注塑件外觀的澆口盡量?。簩τ谫|量大、形狀大、收縮率大的產品,澆口盡量大。
          In order to prevent deformation caused by stress, the gate should be generally thin. In order to prevent shrinkage marks, the gate should be thick; If the filling is insufficient, it should be wide and the length of the gate and runner should be short as the mold allows. Less twists and turns is better; The gate that affects the appearance of injection parts should be as small as possible: for products with large quality, large shape and large shrinkage rate, the gate should be as large as possible.
          小澆口可以增加熔體的流速,增加熔體的摩擦力,提高熔體的溫度。結果熔體的粘度降低,有利于充模。但由于小澆口阻力大,注射壓力損失大,不利于熔體的充填,尤其是遠射部分的薄結構。有些制品的澆口不宜過小,如一些厚壁制品,在注射過程中要進行兩次以上的附加壓力,才能滿足塑料制品的要求。
          The small gate can increase the flow rate of melt, increase the friction force of melt and raise the temperature of melt. Results The viscosity of melt decreased, which was beneficial to mold filling. However, because of the large resistance of the small gate and the large loss of injection pressure, it is not conducive to melt filling, especially for the thin structure of the far-shot part. Some products of the gate should not be too small, such as some thick wall products, in the process of injection to carry out more than two additional pressure, to meet the requirements of plastic products.
          總之,澆口的形式和截面尺寸會影響注塑件的變形,不同形狀的注塑件應采用不同的澆口形狀和斷面尺寸。所以在使用時一定要多加注意吧!
          In short, the form and section size of the gate will affect the deformation of the injection molded parts, and different shapes of the injection molded parts should use different gate shape and section size. So in use must pay more attention to it!

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