The service life of plastic molds is closely related to correct maintenance. In reality, there are too many cases of mold scrapping due to improper maintenance. After making molds for twenty or thirty years, I can’t remember how many such accidents occurred. It is a pity that the development of the mold is more than 100,000 yuan, and there are not many products. The following summarizes some basic knowledge of correct maintenance of plastic molds for customers' plastic adjusters to develop basic maintenance habits, thereby extending the service life of molds:
1. Maintenance of molds before production
A. It is necessary to clean the oil stain and rust on the surface of the mold, and check whether there are foreign objects in the cooling water holes of the casting mold, and whether there is a waterway blocked.
B. It is necessary to check whether the arc in the rubber mouth sleeve of the mold is damaged and whether there is any residual foreign matter. Whether the moving parts are abnormal and whether the movement is smooth.
2. Maintenance of molds in production
1. Check all the guide pillars of the mold every day, whether the guide sleeve is damaged, including the mold guide pillars, positions and other components, regularly refuel and maintain them, and maintain them twice a day on and off work.
2. Clean the foreign matter glue, foreign matter, oil, etc. on the parting surface of the mold and the exhaust groove, and check whether the ejector pin of the mold is abnormal and oil it regularly. The parting surface and the runner surface are cleaned twice a day. The oiling of the guide tip, bushing, and position determines the tip once a day.
3. Regularly check whether the waterway of the mold is smooth, and fasten all the fastening screws.
4. Check whether the limit switch of the mold is abnormal, whether the inclined pin and the inclined top are abnormal.
3. Maintenance of the shutdown mold
1. Before shutting down, the cooling water circuit must be closed, the remaining water in the water circuit in the mold must be blown out, and the surface of the mold must be checked for residual rubber threads, foreign objects, etc. After cleaning, spray the anti-rust agent evenly, and fill in the relevant records accurately.