1. After the mold is used for a long time, the cutting edge must be ground. After the grinding, the cutting edge must be demagnetized, and the cutting edge surface must be demagnetized. Mould using the enterprise to do detailed records, statistics of its use, care, lubrication, cleaning, rust and damage, which can be found on the basis of parts, components, has been damaged, the wear degree of size, to find and solve the problem of information data, and the mould molding process parameters, the materials used for the product, so as to shorten the test time of mould, improve production efficiency. Should be in injection molding machine, mold under normal operation, all kinds of mold test performance, and finally forming parts size measured, through which information can determine the existing state of mould, find out the cavity, core, cooling system and parting surface damage, according to the information provided by the plastic, can judge the mold damage status and maintenance measures.

2: spring and other elastic parts in the use of the spring is the most vulnerable to damage, usually appear fracture and deformation. The way to take is to replace, in the process of replacement must pay attention to the specification and model of the spring, the specification and model of the spring through the color, outside diameter and length of three items to confirm, only in the case of three items are the same can be replaced. Spring to import quality is good.

3: in the process of using the die, the punch is easy to break, bend and gnaw the phenomenon, the punch sleeve is generally gnaw. Punches and punches are generally damaged with the same specification of parts for replacement. The parameters of punch mainly include working part size, installation part size, length size, etc.

4: fastening parts, check whether the fastening parts are loose, damage phenomenon, the way to take is to find the same specification of parts for replacement.

5: pressing parts such as pressing board, plastic, unloading parts such as stripper board, pneumatic top material, etc. When maintenance, check the relationship between parts and whether there is damage, repair the damaged parts, pneumatic jacking check whether there is leakage, and take measures for the specific situation. Replace the air pipe if it is damaged. To to track: focus on several important parts mould ejection, guiding role is to ensure that the mold opening and closing movement and plastic ejection, if any of these parts stuck due to injury, will lead to production, so often should keep the mould thimble, guide post lubrication (should choose the most suitable lubricant), and regularly check whether thimble, guide pin, etc the distortion and surface damage, once found, will change in time; After the completion of a production cycle, to mold working surface, movement, guide parts coated with professional anti-rust oil, especially should pay attention to the gear, rack mold bearing parts and spring mold elastic strength protection, to ensure that it is always in the best working state; With the continuous production time, the cooling channel is prone to deposit scale, rust, silt and algae, which makes the cooling channel section smaller and the cooling channel narrower, which greatly reduces the heat exchange rate between the coolant and the mold and increases the production cost of the enterprise. For hot runner die, the maintenance of heating and control system is very important to prevent production failure.