Injection molding machine (referred to as injection machine or injection molding machine) is the main forming equipment of the thermoplastic plastic or thermosetomic materials to make the plastic products with various shapes of plastic products.
The injection molding machine and mold are achieved. Although there are many types of injection molding machines, no matter the type of injection molding machine, there are two basic functions:
1. Heating plastic to make it melt;
2. Apply a high pressure on the melting plastic to make it ejaculate and fill the mold cavity.
So what will the injection molding machine continue to operate? SUDA explains what will happen to the injection molding machine screw in continuous work.
The injection screw is working in high temperature, high pressure, high mechanical torque and high friction environment for a long time. The first few factors are required by process conditions, and the loss caused by friction is inevitable. General screws have been treated on the surface to improve the surface hardness, that is, to improve the anti -wear ability. However, if the cause of wear is ignored, it will not try to reduce the wear as much as possible, which will inevitably greatly reduce the work life of the screw.
1. Each plastic has an ideal plasticized processing temperature range. The processing temperature of the tube should be controlled to get close to this temperature range. The granular plastic will first reach the feed section from the grinned bucket, and dry friction will inevitably occur in the feed section. When these plastics are insufficient, when the melting is not melted, it is easy to cause the inner wall and screw surface of the barrel to increase. Similarly, in the compression segment and average section, if the melting state of the plastic is uneven, the wear will also increase.
2. The speed should be adjusted. Because some plastic plus enhanced agents, such as glass fiber, minerals, or other reclamation. The friction of these substances on metal materials is often much larger than melting plastic. When injecting these plastics, if you use a high speed, you will also increase the cutting of the plastic, which will also enhance the corresponding real estate to produce more fragmented fibers. Great increase. When inorganic minerals are at high speed on the metal surface, their scraping effect is not small. Therefore, the speed should not be tuned too high.
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Precautions for injection molding machine
