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• Posted By: xiu umin
• Posted On: May 30, 2019
• Views: 1
• Likes: 1
• Category: Real Estate
• Description: 1. Improper use of the release agent. The purpose of using an Air Cooler Mould(FURNITUREMOULD) https://www.furnituremould.com/ is to reduce the adhesion between the surface of the plastic part and the surface of the cavity, preventing the two from sticking to each other, thereby shortening the moulding cycle and improving the surface quality. Plastic parts. However, since the release effect of the release agent is affected by the chemical action, the physical conditions, and the moulding materials and processing conditions, the optimum variety and amount of the release agent must be determined according to the specific conditions. 2. Process conditions are not properly controlled. If the size of the injection moulding machine is large, the screw speed is too high, the injection pressure is too large, and the injection pressure is maintained for too long, overfilling may occur, so that the moulding shrinkage rate is less than expected, and demolding is difficult. In addition, the nozzle temperature is too low, the cooling time is too short and the spray is broken, which causes deformation. Therefore, beyond the failure of the mould clamping and mould release, the injection pressure, injection time, cylinder and melting temperature should be lowered, the cooling time should be prolonged, and liquid flow should be prevented. 3. Plastic overflow When the injection pressure is too large, the shrinkage rate is less than expected, and it becomes difficult to remove the air cooler mould. If the injection pressure is lowered, the injection time is reduced, the molten material and the mould temperature are lowered, and it becomes easy to remove the mould. In this case, it is more effective to reduce the friction between the plastic and the mould. It is also effective to improve light treatment, remove sidewalls, grind and add ejector pins. When forming deeper parts, it is more helpful to blow compressed air into the mould and parts (see "Cracking, Cracks, Microcracks and Whitening"). 4. Glue the pieces to the air cooler mould. To avoid this, the air cooler mould should be installed correctly. The reason for the large release resistance is due to the low finish or unevenness of the side walls. At this time, a z-shaped pull rod should be placed on the side of the dynamic mould to pull the production. In the mould design, it is necessary to fully consider this phenomenon. It is also effective to set the temperature difference between the two sides. Click Furniture Mould https://www.furnituremould.com/ to learn about more information.