As the darling of the packaging and printing industry, trademark printing is widely used in products and industries such as daily chemicals, cosmetics, electronic appliances, medicine, daily necessities, food and beverage, supermarket retail, logistics, etc., and has become an indispensable part of the printing field. In recent years, with the wide application of labels and the continuous enrichment of label types, the innovation and development of label printing technology has been promoted, which has led to the development of more advanced and efficient label printing equipment. This article will introduce you to the principle of printing machine. .
The working principle of the printing machine: the film and PS version are closely attached, and then exposed to ultraviolet light. There are two main reasons for the quality of the sounding version: vacuum, the closeness of the film and the PS version. The source of light, the wavelength of the ultraviolet light is within a certain range, as much as possible "pure". The closeness of the original (such as film) and PS version fit.
The printing machine occupies an extremely important position in the prepress equipment, and its performance directly affects the quality of the plate making, and its maintenance plays a decisive role in the printing production process. If the correct selection, proper maintenance and timely maintenance of the required printing machine can not only improve the service life of the printing machine, but also improve the quality of the printing plate. The temperature rise of the working glass surface of the plate printing machine should be no more than 20 °C. Detection method: the exposure light source is placed in the normal working position, and the surface temperature of the working glass is measured by a point thermometer having a division value of not less than 0.5 °C.
The early printing machine control system was a single board machine control system. The parameters were displayed and set to 7-segment LED digital tube and digital buttons. Due to the high failure rate of the single-board machine system, complicated parameter setting, and poor display interface, the PLC is used to redesign the control system. Compared with the original single board machine, the PLC has flexible configuration, simple programming, and supports communication connection with the HMI, which greatly enhances the monitoring function of the device. .
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