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How to maintain the plastic mold to effectively extend its service life

update:20-11-2020
abstract:

Plastic molds are tools that are matched with plastic m […]

Plastic molds are tools that are matched with plastic molding machines in the plastic processing industry and can give plastic products a complete configuration and accurate size. Due to the wide variety of plastics and processing methods, and the complex and simple structures of plastic molding machines and plastic products, the types and structures of plastic molds are also diverse. The cost of plastic molds is not low, so how do we maintain plastic molds to effectively extend its service life?
1. First, each pair of plastic molds should be equipped with a resume card to record and count its use, care (lubrication, cleaning, rust prevention) and damage in detail. Based on this, you can find out which parts and components have been damaged and the degree of wear to provide Information materials for finding and solving problems to shorten the trial run time of plastic molds and improve production efficiency.

2. Under the normal operation of the plastic mold, test various properties of the mold, and measure the dimensions of the final molded plastic part. Through this information, the current state of the mold can be determined, and the cavity, core, cooling system and According to the information provided by the plastic part, the damage of the parting surface, etc. can be used to determine the damage state of the mold and the repair measures.

3. Focus on tracking and testing several important parts of plastic molds. After each production cycle, the band heaters, rod heaters, heating probes and thermocouples on the mold should be measured with an ohmmeter. If they are damaged, they should be replaced in time and compared with the mold resume. Keep records so that problems can be discovered in time and countermeasures can be taken.

4. Pay attention to the surface maintenance of plastic molds. Surface maintenance directly affects the surface quality of the product, and the focus is on preventing rust. Therefore, it is particularly important to choose a suitable, high-quality and professional anti-rust oil. When the mold completes the production task, different methods should be used to carefully clean the residual injection molding according to different injection molding. Copper rods, copper wires and professional mold cleaning agents can be used to clean the residual injection molding and other deposits in the mold, and then air dry. It is forbidden to clean up hard objects such as iron wires and steel bars to avoid scratching the surface. If there are rust spots caused by corrosive injection molding, use a grinder to grind and polish, and spray professional anti-rust oil, and then store the mold in a dry, cool, and dust-free place.