【New】Introduction to the characteristics of the foam forming machine The working principle of the foam machine

In the articles of EPE foam machine, manufacturers, manufacturers, etc., let everyone know some unknown knowledge, but the 'features of foam molding machine introduces the working principle of foam machinery' is still relatively unfamiliar to many people. Today we will take a look: 　1. The foam molding machine computer adopts imported PLC computer host chip, plus LCD screen, software fault self-diagnosis system and error correction system, which makes the operation more convenient. Its control program is designed in a fool style. Simple and convenient, no professional training is required for on-the-job operation.　　2. The full hydraulic drive of the foam molding machine, with domestic hydraulic frequency modulation technology, solves the adaptability of the foam molding machine to various materials, improves the compactness of the materials, and shortens the molding cycle. The working principle of the 　　 foam molding machine is similar to that of an injector. It is the process of injecting the plasticized and molten plastic into the mold cavity with the help of the thrust of the screw, and the product is obtained after solidification and shaping. The injection molding is a cyclic process, a cycle mainly includes: quantitative feeding-melt plasticization-pressure injection-mold filling and cooling-mold opening and taking parts. After the product is taken out, the foam is closed again, and the characteristics of the foam molding machine are introduced to proceed to the next cycle. You may like this article better: a certain amount of foaming agent and water vapor are retained in the pre-expanded beads of the foam machinery and equipment. When they are out of the machine, they will condense into a liquid, and the liquid foaming agent will dissolve into the polystyrene. The pressure in the bubble is quickly reduced, negative pressure (partial vacuum) appears in the bubble, and the beads are very soft and easily deformed. Therefore, when air is sent, try not to make the wind pressure too large. The inner wall of the duct should be as smooth as possible, and the bending radius should be as large as possible (to reduce collision resistance). The pipeline should be a good conductor of electricity, and the entire line must be grounded to avoid static electricity. For ignition, the transmission speed should not exceed 8m/s to avoid damage to the beads. A certain amount of foaming agent and water vapor are retained in the pre-expanded beads of the foam machinery and equipment. When they are discharged from the machine, they will condense into a liquid, and the liquid foaming agent will dissolve into the polystyrene to quickly reduce the pressure in the bubbles. , There is negative pressure (partial vacuum) in the bubble, and the beads are very soft and easily deformed. Therefore, when air is sent, try not to make the wind pressure too large. The inner wall of the air pipe should be as smooth as possible, and the bending radius should be as large as possible (to reduce collision resistance). The working principle of the forming tube foam machine should be a good conductor of electricity. The circuit is grounded to avoid electrostatic ignition, and the transmission speed should not exceed 8m/s to avoid damage to the beads. The beads of the foam mechanical pre-expander just out of the machine are all moist. After being released from the pre-expander, it absorbs air and suddenly encounters cold, causing the foaming agent in the honeycomb cells to condense to form a negative pressure in the cells, so the beads are in It must be placed for a period of time after pre-expansion. On the one hand, it is dried, and on the other hand, it is allowed to infiltrate air to eliminate negative pressure, so that the internal pressure and external pressure in the cells can be balanced to prevent the cells from collapsing and make the beads elastic. The process of drying, cooling and stabilizing the cell pressure of the EPS beads just out of the pre-expander is called maturation. Maturation improves the further expansion of the pre-expanded beads during the molding process, the sinterability between beads and the elasticity of the beads, which is beneficial to improve the quality of EPS products. 'Introduction to the characteristics of the foam molding machine and the working principle of the foam machine' is carefully prepared by our editor for everyone. Remember what we said in the previous article? These may be some incomplete places, we will explain them one by one in future articles! Keywords of this article: foam molding process foaming agent pressure
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