Compared with other molds, the plastic injection mold is more complicated and precise, and the requirements for operation and maintenance of the product are higher. Therefore, in the whole production process, correct operation and meticulous maintenance have great significance to normal production of the enterprise and enterprise profit improving.
1. We need choose the appropriate injection machine and determine the reasonable process conditions. If the injection molding machine is too small, it can not meet the requirements. If too much, it is a waste of energy, and it will damage the mold or template due to improper adjustment of the clamping force, and at the same time reduce efficiency.
When selecting the injection machine, we need check all conditions, such as the maximum injection volumn, the effective distance of the tie rod, the mold mounting size on the template, the maximum mold thickness, the minimum mold thickness, the template stroke, the ejection way, the ejection stroke, the injection pressure, the clamping force, etc. It can only be used after sufficient requirements. Reasonable determination of the process conditions is also one of the contents of the correct use of the mold, such as too large of clamping force, too high of injection pressure, too fast of injection rate, too high of mold temperature etc., All of them will cause damage to the lifetime of the mold.
2. After the mold on the injection machine, the mold must be operated without material first. Observe whether the operation of each part is flexible, whether there is abnormal phenomenon and the ejection stroke, whether the opening stroke is in place, whether the parting surface is tightly matched when the mold is closed, and whether the pressure plate screw is tightened.
3. When the mold is used, it is necessary to maintain normal temperature and if work under normal temperature, it will extend the lifetime of the mold.
4. The sliding parts on the mold, such as the guide pin, the return pin, the push rod, the core, etc., should be observed at any time, regular inspection, timely scrubbing and filling grease, especially when the summer temperature is high. It must be at least two per shift secondary oil to ensure that these slides are flexible and prevent tight seizures.
5. Before each mold clamping, it should be noted that whether the cavity is cleaned or not, no residual products or any other objects are allowed. It is strictly forbidden to use hard tools during cleaning to prevent the surface of the cavity from being damaged.