To ensure the quality, the mold loading and unloading operations of plastic processing equipment must be carried out according to the process
For a plastic processing equipment with excellent quality, the required workflow must meet the standards when working, so as to ensure that the finished products are free of defects. For example, the loading and unloading process of plastic processing equipment must be smooth when the equipment is working. In fact, the mold loading and unloading process of plastic processing equipment also has a corresponding process.
To install the mold, first open the door of the plastic processing equipment, lift the mold with a crane, visually check the height of the mold higher than the plastic processing equipment, slowly place the mold between the two templates of the plastic processing equipment and slowly lower it. Then visually check that the center of the mold gate sleeve is consistent with the positioning hole of the injection molding machine, then move the traveling crane to make the mold positioning ring coincide with the positioning hole of the machine tool, push the mold by hand to make it close to the machine tool, slowly operate the machine tool and mold keys until the mold of the injection molding machine tool completely presses the mold, and press the pressure to lock the mold after confirmation. Third, fix the mold with the press plate screw of the machine tool, slowly open the mold, and then move quickly to confirm the opening stroke. Slowly close the mold, and confirm that the mold has no abnormal sound. Close the mold for test.
When unloading the mold, first confirm that the mold is normal and can be opened normally, then press the mold, fix the mold with the lifting ring, hoist the mold with the crane, tighten a little force, loosen the pressing plate screw, slowly move the mold of the injection molding machine, and confirm that the mold will not fall. After quickly opening the equipment mold plate, use the nozzle of the plastic processing equipment to slightly force the gate sleeve of the mold, Separate it from the plastic processing equipment, then move the crane to make the mold in the center of the plastic processing equipment, slowly lift it, place the mold in a safe area at a height higher than the machine tool, and then unload the mold.
The impact of time on the product quality of plastic processing equipment mainly includes three aspects:
1. Too long injection time is easy to cause the product to pass the better molding temperature, resulting in poor molding.
2. The injection molding time is too short to completely fill the mold, affecting the product quality.
3. The shorter the injection time, the higher the shear strain rate in the melt, the greater the shear heating, and the less heat lost due to heat conduction. Therefore, the higher the temperature of the melt, the lower the viscosity, and the lower the injection pressure required to fill the cavity.
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