How to maintain the surface of the injection mold?

2022/11/04

How to maintain the surface of the injection mold? In order to determine the damage and repair methods of the injection mold. Processing enterprises should test various properties of the mold under the normal working conditions of the injection molding machine and mold, and measure the size of the final molded plastic part. With this information, the current state of the mold can be confirmed and cavities, cores and cooling can be found.

Damage to the system and parting surfaces. At the same time, it is necessary to focus on tracking and detection of several important parts of the mold: ejector parts and guide parts are used to ensure the opening and closing movement of the mold and the ejection of plastic parts. If any part of the mold is stuck due to damage, it will cause production to stop, so always keep the mold ejector pins and guide posts lubricated (a very suitable lubricant should be selected), and regularly check whether the ejector pins, guide pins, etc. are deformed or damaged.

Once found, replace it in time; after completing a production cycle, the working surface, motion and guiding parts of the mold are coated with professional anti-rust oil, and special attention should be paid to maintaining the elastic strength of the gear and rack mold bearing parts and the spring mold to ensure Make sure they are always in good working order. Plastic mold opening

With the extension of production time, the cooling channel is prone to scale, rust, sludge and algae deposition, which reduces the cross-section of the cooling channel and narrows the cooling channel, which greatly reduces the heat exchange rate between the coolant and the mold, and increases the company's production cost. Therefore, attention should be paid to the finishing of the runner; for hot runner molds, the maintenance of heating and control systems helps prevent production failures, so it is especially important.

Therefore, after each production cycle, an ohmmeter should be used to measure ribbon heaters, rod heaters, heating probes and thermocouples on the mold. If it is damaged, it should be replaced in time and checked with the mold resume. Compare and record so that you can take action when problems are identified.

Precision Plastic Mould Factory


The appearance and maintenance of the mold cannot be ignored either. It directly affects the appearance quality of the product. The focus is on preventing corrosion.

Therefore, it is particularly important to choose a suitable, high-quality, professional anti-rust oil. After the mold completes the production task, the remaining injection-molded products should be carefully removed by different methods according to different injection molding. Residual injection molding and other deposits can be removed from molds with copper rods, copper wire, and a professional mold cleaner, and then air-dried.

It is strictly forbidden to arrange hard objects such as iron wires and steel bars to avoid scratching the surface. If there are rust spots caused by corrosive injection molding, grind and polish with a grinder, spray professional anti-rust oil, and then store the mold in a dry, cool, and dust-free place.


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