How to choose a suitable chiller for injection molding machine
In the process of production, the injection molding machine needs to cool the mold to cool the plastic quickly, improve product quality, and improve production efficiency. Here, the supplement of the cold water machine is indispensable. The cold water machine is used in the injection molding machine to achieve rapid coagulation of the plastic through the four steps of extrusion molding, bottle blowing, thermoplastic, and hydraulic systems. This shows the importance of chillers for injection molding machines. So how to choose a suitable chiller, today I will give you some reference suggestions.
How to choose a suitable chiller for injection molding machine
- What factors should be paid attention to in the selection of chillers
In the production of injection molding machines, more than 80% of the molding cycle of plastic products is used for cooling molding, so shortening the cooling time is the key to increasing production and enhancing benefits. However, shortening the cooling time depends on the amount of ice water energy. Too much ice water energy will lead to excessive energy consumption and waste, and too little ice water energy will not achieve the best cooling effect. In mold cooling, the choice of ice water energy depends on its specific heat capacity with the molding material, the temperature and weight of the sol and the temperature of the product when it is demolded.
In mold cooling, the ice water pressure is generally 0.1-0.2Mpa. When it exceeds 0.2Mpa, a chiller with greater strength is needed to meet such pressure requirements.
Second, the relationship between the chiller ice water temperature difference and the flow rate
The cooling temperature of different plastic products is not the same, so that the temperature difference of ice water required for cooling will be formed. The temperature difference of ice water is generally 3 ° C-5 ° C, but sometimes 1 ° C-2 ° C may occur. As far as the temperature difference is concerned, the smaller the temperature difference, the greater the flow of ice water is required to take away the same amount of heat, otherwise the smaller the flow of ice water required. This is what you need to know when choosing a chiller.
- The effect of ice water quality on the use of chillers
In the use of chillers, we must pay attention to soften the water, and pay attention to monitoring the PH value of the water at the same time, so as to avoid corrosion of the PH value greater than 7 and damage the mold. Therefore, you can consider installing an electronic softener to avoid damage to the machine caused by hard water quality.
- Reference selection of conventional injection molding machine and chiller
If the condensing temperature of the cooling water of the water-cooled chiller is below 35 ° C, and the injection molding machine is used under normal ambient temperature, there are several ways to match:
1hp water-cooled chiller can be equipped with 80 tons of clamping force injection molding machine, the temperature is controlled at 5-10 degrees;
1hp water-cooled chiller can be equipped with 100 tons of clamping force injection molding machine, the temperature is controlled at 10-15 degrees;
1hp water-cooled chiller can be equipped with 120 tons of clamping force injection molding machine, the temperature is controlled at 15-20 degrees
In addition, 1HP water-cooled chiller can be equipped with a single injection volume of 10 QZ injection molding machine temperature control at 5-10 degrees. (Injection volume 1QZ = 28.5g)
The chiller plays a vital role in the production of injection molding machines, so choosing a suitable chiller can better improve production efficiency.
Geson chiller product range covers Industrial Refrigeration and Commercial Central air-conditioning, including Water-cooled chillers, Air-cooled chillers, Screw chillers, Scroll chillers, Centrifugal chillers, Water(ground) source heat pumps, Air source heat pumps and etc., Capacity from 2tons~4000tons, and temperature from -160℃~30℃, complete full product series for customers.
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