Infrared heating lamps are used in injection molding machines
1. Improve heating efficiency
Rapid heating: Infrared heating lamps can quickly generate heat, allowing the barrel of the injection molding machine to quickly heat up. This is crucial to shortening the injection molding cycle. For example, in the preheating stage of the machine, the use of infrared heating lamps can save 30% – 50% of the preheating time compared to traditional heating methods, thereby entering the production state faster. Its rapid heating characteristics are also reflected in the temperature adjustment during the production process. When it is necessary to change the injection molding material or adjust the process parameters, it can respond quickly so that the barrel temperature quickly reaches the new set value.
Efficient heat transfer: The infrared rays emitted by infrared heating lamps can directly penetrate the gaps between plastic particles and transfer heat to the plastic material. This direct heat transfer method avoids the process in which heat is transferred to the plastic through the barrel wall in the traditional heating method, reduces heat loss, and improves heat transfer efficiency. According to statistics, the heat transfer efficiency of infrared heating methods can be increased by about 20% – 30% compared to traditional heating methods.
2. Accurate temperature control
Sensitive temperature regulation: Infrared heating lamps are sensitive to the temperature control system. During the injection molding process, different plastic materials and product shapes have precise and different temperature requirements. Infrared heating lamps can accurately adjust the output power according to the temperature control instructions of the injection molding machine to achieve precise control of the barrel temperature. For example, when injecting high-precision plastic parts, the temperature control accuracy can reach within ±3℃, ensuring that the plastic is injected at the appropriate temperature and improving product quality.
Stable temperature output: During the continuous injection molding production process, infrared heating lamps can maintain stable temperature output. It will not experience temperature fluctuations due to aging of heating elements or environmental factors like some traditional heating methods. This stable temperature environment helps to ensure the uniformity and fluidity of the plastic melt, making the quality of the injection molded products more stable, such as the dimensional accuracy and appearance quality of the product can be effectively guaranteed.
3. Improve product quality
Uniform heating of plastic melt: The infrared heating lamp has good heating uniformity. It can make the plastic particles in the barrel evenly heated to form a uniform plastic melt. During the injection molding process, uniform melt can better fill the mold cavity and avoid product defects caused by uneven melt temperature, such as short shots, flow marks, shrinkage marks, etc. For example, when injecting a large plastic shell, it can ensure that the wall thickness of each part of the shell is uniform and the appearance quality is good.