Maintenance of Injection Mould
Four matters needing attention of maintenance of injection mould:
Plastic injection moulding processing companies should have resume cards for each mould machine, which for write up and calculate the information of usage, maintenance (lubrication,cleaning and rust-proof) and damage. So we can find out the damaged parts and components, and degree of wear(abrasion), which providing the information and data of finding and solving matters, as well as moulding process parameters of this mould, and product material to shorten the test time of mould and improve the production efficiency.
Plastic injection moulding processing companies should test all kinds of performance of mould under normal action of injection moulding machine and mould, and measure the size of final shaped plastic moulded parts. After this, we can confirm the existing situation of mould,and find out the damage point of mould cavity, mould core,cooling system and parting line.According to the shown information by plastic moulded parts,we can know and judge the damaged situation of mould,and confirm the maintenance measures.
The key parts of mould must be tracked and tested.:The function of the ejector and guide part is to ensure the mold opening and closing movement and the knock-out of plastic moulded parts . If there's any location get stuck caused by damage,which will caused halt in production.Therefore, it is necessary to maintain the lubrication of the ejector pin of mould and guiding post often(choose most suitable lubrication),and weekly check whether the ejector pin and guiding post is out of shape and have surface damage.Once found, should be replaced in time.After completing one production cycle,painting the professional anti-rust oil to the mould working surface,moving and guiding parts,especially pay attention to the protection of mould bearing parts which have gear and rack,and protection of intensity of spring mould to ensure it keeps best working condition.With continuous of production time, cooling runner easily produce limescale,rusting,silt and algae etc,which making the cooling runner section smaller and the cooling channel narrows to greatly reduce the heat exchange rate between coolant and mould,and increase the production cost of company.Therefore,it is very important to clean the cooling runner.As for hot runner mould,the maintenance of heating and control system will avoid producing the malfunction of production.Therefore,the band heater,rod heater,heater probe and thermocouple etc of mould should be tested by ohm.If damaged,replace it in time and compare it with the mold's resume,make a good record, so as to find out the problems in time and take countermeasures.
Pay attention to the surface maintenance of the mold.Because that it directly affects the surface quality of the product, and the emphasis is to prevent corrosion.Therefore, it is particularly important to choose a kind of suitable,high-quality and professional anti-rust oil When the mold production is finished, the residual injection should be carefully cleaned according to different injection molding.It can use copper wire and professional mold cleaning agent to remove residual injection molding and other sediment.Disables hard objects such as wire rods to clean,which to avoid scratching the surface.If there's corrosive injection caused by rust spot, using the grinding machine to grind and polish, and spray the professional anti-rust oil, and then place the mold in dry, cool and dust-free to store.
