Daily Care Of Plastic Injection Molding

Jan 09, 2026

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Routine maintenance of injection molds is crucial during the production process, as it directly affects the mold's lifespan and product quality. The following are the specific details of routine maintenance for injection molds:

 

Component Inspection: Regularly inspect all components of the mold, including the cavity, core, slide block, core pulling mechanism, and ejection mechanism, for damage, deformation, or looseness. Repair or replace any problematic components promptly. For example, check if ejector pins are bent or broken, and whether the slide block's limit device is functioning properly. Address any issues immediately to avoid production disruptions.

 

Screw and Nut Tightening: Molds are subjected to vibration and pressure during production, which can easily cause screws and nuts to loosen. Regularly use tools such as torque wrenches to check and tighten the mold's screws and nuts to ensure all mold components are securely connected. Pay particular attention to the mold's opening and closing process, observing for abnormal noises or jamming. If this may be due to loose screws, investigate and address it promptly.

 

Water System Inspection: The proper functioning of the cooling system is crucial for mold temperature control. Regularly check the cooling water system for leaks, blockages, or poor water flow. This can be determined by observing for water droplets at the joints of the cooling water pipes and by touching the pipes to check their temperature. If leaks are found, replace the seals or repair the leaking area immediately. For blocked water systems, use a high-pressure water gun or a specialized water system cleaner to clear the blockage.

 

Water Quality Management: Impurities and scale in the cooling water can affect cooling efficiency. Therefore, change the cooling water regularly and use softened water or add an appropriate amount of water quality stabilizer to prevent scale formation. Generally, a complete water change and cleaning of the cooling system should be performed every 1-2 months.

 

Through these comprehensive and meticulous daily maintenance procedures, the service life of injection molds can be effectively extended, production efficiency improved, and product quality stability guaranteed.

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