Mold maintenance and repair
With the development of the industry, the use of mold is more and more extensive, the following on the understanding of mold maintenance and maintenance.
In injection molding machine, mold under normal operation, all kinds of mold test performance, and after molding plastic parts dimension 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.
Spring and other elastic parts are easy to damage during the process of use.The method adopted is to replace. In the process of replacement, we must pay attention to the spring's specification and model. The spring's specification and model are confirmed by three colors, outer diameter and length.
The punch is prone to break, bend and gnaw in the process of using the mould.The damage of punch and punching sleeve is usually replaced with parts of the same specification.The parameters of punch mainly include working dimension, installation dimension and length dimension.
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;
Tighten the parts, check whether the fastening parts are loose, damage, the method is to find the same specification of parts for replacement.
Pressure parts such as the pressure plate, such as plastic, such as unloading parts such as strip, such as pneumatic roof.During the maintenance, check the parts of the accessories and whether there is any damage, repair the damaged part, check the air leakage phenomenon with the pneumatic roof, and take measures for the specific situation.Replace if the air pipe is damaged.
After the completion of a production cycle, professional anti-rust oil should be applied to the mold's working surface, movement and guiding parts, and special attention should be paid to the protection of the elastic strength of the bearing part and the spring mold with gear and rack, to ensure that it is always in a good working state.With the continuous production time, the cooling channel is easy to deposit scale, rust, silt and algae, etc., so that the cooling channel section becomes smaller and the cooling channel becomes narrower, which greatly reduces the heat exchange rate between the cooling liquid and the mold and increases the production cost of the enterprise. Therefore, attention should be paid to the cleaning of the flow channel.