Injection molding machine adjustment method

Introduction The adjustment method of the injection molding machine depends on the type of product it is. Generally, for simple products, the first stage pressure is set at around 100, the speed is around 80, and the second stage pressure is set. at around 70.

Injection molding machine adjustment method

Let's take a look at the type of products that beer offers. Generally, for simple products, the pressure in the first stage is set at around 100 and the speed is around 80. In the second stage, the pressure is set at around 100.70 and the speed is around 65. Ordinary products can be injection molded in two steps. If the material is not a high temperature material, the temperature in the first to fifth stage is probably 200, 185, 150, 130, 50, 30, which is about the same. Products with smaller melt materials generally melt at 110. Wait until the second stage is at 100, pull back at 10, and the injection time is 3-6 seconds. Cold glue time is adjusted from 7 to 12 seconds. depending on the mold and the product. For simple products, it should go according to the adjustment above. For more difficult products, you must adjust the back pressure, temperatureture, injection pressure, injection time, cold glue time, adjust the tightness. the mold, etc.

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The characteristics of plastics are :

< p>1. Most plastics are chemically lightweight and do not rust;

2. Good impact resistance;

3.

4. Good insulation and low thermal conductivity;

5. Generally good formability and colorability, low processing cost

6. rate, easy to burn;

7. Poor dimensional stability and easy to deform;

8. Most plastics have poor low temperature resistance, become brittle and age easily;

9. Some plastics are easily soluble in solvents.

Advantages of plastic

Light specific gravity. The density of plastic is generally between 0.9 and 2.3. Comcompared to metals, its weight is only half that of aluminum, a fifth of that of steel and an eighth of that of lead. If it is a porous foam, its density is much lighter.

The characteristic of light density is closely related to the performance and use of the product. Light density plastic products are light and beautiful. They are not only easy to use and carry, but also easy to transport and store. They are suitable for the use requirements of daily plastic products.

Good chemical stability. Plastics, generally speaking, have excellent chemical stability and have no chemical interaction with acids, salts, solvents, steam, exhaust gases, etc., and are suitable for the manufacture of various plastic products for industrial, agricultural and civil use. For example, polyethylene film has been widely used as packaging bagfor various foods and medicines. Polyvinyl chloride film has been widely used as a packaging container for fertilizers.

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