Compared with other molds, injection molds have a more complex and precise structure, and higher requirements for operation and maintenance of products. Therefore, in the entire production process, correct use and careful maintenance are essential for maintaining normal production and improving the enterprise. Benefit is of great significance.
1. Choose appropriate molding equipment and determine reasonable process conditions. If the injection molding machine is too small, it will not meet the requirements. If the injection molding machine is too large, it will be a waste of energy. It will also damage the mold or template due to inappropriate adjustment of the clamping force. Reduce efficiency. When selecting the injection machine, it should be based on the maximum injection volume, effective distance of the tie rod, mold installation size on the template, maximum mold thickness, minimum mold thickness, template stroke, ejection method, ejection stroke, injection pressure, mold clamping force, etc. Check and use it only after meeting the requirements. Reasonable determination of the process conditions is also one of the contents of the correct use of the mold. Too much clamping force, too high injection pressure, too fast injection rate, too high mold temperature, etc. will damage the service life of the mold.
2. After the mold is installed on the injection machine, the empty mold must be run first. Observe whether the movement of each part is flexible, whether there is any abnormal phenomenon, whether the ejection stroke and opening stroke are 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, keep the normal temperature and work at the normal temperature to prolong the service life of the mold.
4.the sliding parts on the mold, such as guide posts, back pins, push rods, cores, etc., should be observed at any time, checked regularly, scrubbed and filled with lubricating grease at the right time, especially in the summer when the temperature is high, at least two per shift Secondary oil to ensure flexible movement of these sliding parts and prevent tight seizures.
5. Before each mold clamping, pay attention to whether the cavity is cleaned, and absolutely no residual products or any other foreign objects are allowed. It is strictly forbidden to use hard tools during cleaning to prevent damage to the surface of the cavity.
6. Molds with special requirements on the surface of the cavity. The surface roughness Ra is less than or equal to 0.2cm. Never wipe it by hand or cotton silk. Use compressed air to blow, or use high-grade napkins and high-grade absorbent cotton dipped in alcohol to gently wipe wipe.
7. The surface of the cavity should be cleaned regularly. During the molding process, the injection mold will often decompose low-molecular compounds to corrode the mold cavity, making the bright cavity surface gradually become dull and degrading the quality of the product, so it needs to be scrubbed regularly. Scrubbing can use alcohol or ketone preparations and then blow dry in time.
Post time: Oct-20-2021