June 10, 2020

Reasons for the guide pillar and guide bush to be easily engaged after disassembling and installing a large mold

The lifting of larger molds often needs to be hoisted by cranes. Because of the need for mold repair in the production process, only half of the molds need to be disassembled. When the repair is completed and the half of the mold is hoisted and installed, the single side mold is often Too tight (after closing with the other half), and the molder is often undetectable.

After that, due to the excessive tightness of the one-sided lifting, the friction between the guide pillar and the guide bush will become very large. Over time, the friction between the two will cause the mold to fail to open.

In addition, if the hoisting is too loose, because the mold is too heavy, the friction between the guide pillar and the guide bush will increase, and the friction between the guide pillar and the guide bush will also occur.

Therefore, it is reasonable to lift a whole set of molds every time a large mold is lifted. Even in the case of a set of molds, there will still be unbalances, so compared to small molds, large molds are more prone to friction and wear of the guide posts. Therefore, even if you install a complete set of molds, you must pay attention to the balance between the moving and fixed molds. You must tighten the mold screws, and often check whether the surface of the guide pillar maintains good lubrication, and add grease in time to reduce friction and wear phenomenon.

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Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts
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