Author: MULAN -Plastic Molding Manufacturer
All plastic mold opening factories know that after the mold is processed, it is necessary to prepare for mold testing, so how much do you know about mold testing? Guosheng Weiye believes that the main steps are as follows: 1. Check whether the plastic in the barrel is correct, and whether it is baked according to the rules (if different materials are used for mold testing and production, different results may be obtained). 2. The feeding tube must be cleaned thoroughly to prevent bad rubber or miscellaneous materials from being injected into the mold. The mold may be stuck due to poorly decomposed rubber and miscellaneous materials.
Check whether the temperature of the barrel and the temperature of the mold are suitable for the material to be processed. 3. Adjust the pressure and injection volume in order to produce products with satisfactory appearance. But you can't run the burr, especially when there are some mold cavity products that have not been completely solidified.
Before adjusting various control conditions, it should be considered that a slight change in the filling rate may cause a large change in the filling rate. 4. Be patient and wait until the conditions of the machine and mold stabilize, even medium-sized machines may have to wait for more than 30 minutes. This time can be used to check for possible problems with the product.
5. The driving time of the screw should not be shorter than the solidification time of the gate plastic, otherwise, the weight of the product will decrease and the performance of the product will be damaged. And when the mold is heated, the travel time of the screw also needs to be lengthened appropriately in order to compact the product. 6. Reasonably adjust to reduce the total processing cycle.
7. Work the newly transferred conditions for at least 30 minutes to make them stable, and then produce at least a dozen full-mode samples continuously, mark the date and quantity on the containers, and place them separately according to the mold cavities, so as to test the stability of their work. Sexuality and reasonable control tolerance (especially valuable for multi-cavity molds). 8. Measure and record the important dimensions of successive samples (should be measured when the sample is cooled to room temperature).