Printing machine using infrared heating tube working principle:A working principleInfrared characteristicsInfrared heating tube is to use the thermal effect of infrared light to work. Infrared is a kind of invisible light, located in a specific band of the electromagnetic spectrum. The infrared radiation emitted by the infrared heating tube in the printing machine can be absorbed by the printing material (such as fabrics, etc.), which makes the molecules of the object to produce intense resonance, thus causing the molecular movement inside the object to intensify, and achieve the purpose of heating.Heating processWhen the printing machine starts the infrared heating tube, the heating wire (usually tungsten wire, etc.) inside the heating tube is energised and heats up. The heat generated by the heating wire emits infrared radiation through the shell made of quartz glass and other materials. The surface of the printing material absorbs the infrared radiation and converts it into heat energy, raising the temperature of the printing material, which helps the ink drying, pigment curing and other operations during the printing process.II. AdvantagesHighly efficient heatingInfrared heating tubes have a high thermal conversion efficiency. Compared with traditional heating methods, such as heat conduction heating, infrared heating can directly transfer energy to the heated object, reducing the loss of energy in the transfer process. For example, in a printing machine, it can quickly dry the printing ink and improve printing productivity.Uniform heatingInfrared heating tubes can provide relatively uniform heating distribution. Through reasonable layout and design, the infrared radiation can evenly cover the surface of the printing material in the working area of the printing machine, ensuring that the entire printing pattern is heated evenly during the drying or curing process, thus improving the quality of printing and avoiding localised uneven drying or incomplete curing of pigments.Energy saving and environmental protectionDue to its high thermal conversion efficiency, the infrared heating tube consumes relatively little electricity during the working process. Compared with some traditional heating methods, it can reduce the waste of energy, lower the running cost of the printing machine, and also meet the requirements of environmental protection and energy saving.Precise controlThe infrared heating tube in the printing machine can precisely control the heating temperature by adjusting the power and working time of the heating tube and other parameters. This is very important for the processing of different types of printing materials (such as different fabrics, different formulations of printing ink), according to the specific requirements of the printing process to achieve accurate temperature control.Third, the main points of selectionPower selectionAccording to the working scale of the printing machine and printing speed requirements to select the appropriate power of the infrared heating tube. If the printing machine’s working width is large, printing speed is faster, you need to choose a larger power of the heating tube to ensure that the printing material can be timely and effective heating. For example, large industrial printers may require several kilowatts of infrared heating tubes per metre of working width.Wavelength selectionDifferent printing materials have different preferences for the wavelength of infrared absorption. Generally speaking, infrared heating tubes with appropriate wavelengths should be selected according to the characteristics of the printing materials. For example, some fabrics may absorb short-wave infrared rays better, while some printing inks containing special pigments may absorb medium-wave infrared rays more effectively. The common wavelengths of infrared heating tubes are short-wave (1 – 3\u03bcm), medium-wave (3 – 5\u03bcm) and so on.Size and ShapeThe size and shape of the infrared heater should match the internal structure of the printer. The layout of the heating area of the printer may have different shape and size requirements, and the heater needs to be able to be easily mounted in the intended position and effectively cover the area to be heated. For example, some small desktop printers may require small, elongated heating tubes, while large industrial printers may require long, thick heating tubes or special shapes (e.g., curved shapes) to accommodate complex heating layouts.Maintenance and PrecautionsCleaningClean the surface of the infrared heating tube regularly. As the printing process may be ink, dust and other impurities attached to the surface of the heating tube, which will affect the efficiency of infrared emission. Use a soft cleaning tool (such as a clean cloth) to gently wipe the surface of the heating tube to avoid scratching the quartz glass housing and other components. Temperature control monitoringThe operating temperature of the heating tube should be monitored and controlled. If the temperature is too high, it may lead to over-drying of the print material, scorching, or damage to the heating tube itself. By installing temperature sensors and other equipment to monitor the heating temperature in real time and combining it with the control system of the printing machine, precise control of the heating tube temperature can be achieved.

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