Plastic Injection Mold, Injection Mold Maker, Mold Parts, JinHong Plastic Mold Factory

    Guide pillars and guide bush are a common type of mold parts in our mold production work. They form the guide device of the mold and play a role in ensuring the smooth opening and closing of the movable mold and the fixed mold.

    Guide posts and guide bushes are used very frequently in the mold industry, and sometimes it is inevitable that there will be problems such as straining. On the surface, it seems that this is just a small problem of mold parts, but it is not. If this problem occurs frequently, it will be aggravated not only by the economic cost caused by the consumption of mold parts, but also by the economic loss caused by the low production efficiency caused by frequent replacement of parts. Difficulties in mold opening mainly include the following points:

    One is that the guide pillars of the mold are not vertical or have offset phenomena, which makes it difficult to separate the front and rear molds, and it is more difficult to open the mold due to the heat generated during production. If this is the case, the guide pillars will be strained and seized.

    The second is because the front and rear molds have too many insert cores and the fit is too tight or even inserted, which will also cause difficulty in mold opening.

    In addition, the gap between the guide post and guide sleeve is too small, and the uneven cooling and heat caused by improper cooling water between the front and rear molds also makes it difficult to open the mold.

    For molds with sliders, if the slider fits too tightly or the slider bites, it will also cause difficulty in opening the mold and so on.