Cement bag printing has traditionally used manual printing, ink roll printing, etc., and they have the disadvantages of unclear digital, short storage time, and being easily erased during handling. In recent years, with the development of science and technology, there are now suitable for cement packaging bag coding technology, which has been widely used in large-scale cement plants.
The printer system consists of two parts, a control system and an air supply ink system.
The control system consists of a host computer control system, which mainly includes a CPU central processor, an EPROM memory, a keyboard, and a programmer. The photoelectric sensor receives the product movement signal and controls the micro-electromagnetic valve nozzles to carry out non-contact printing on the products. The air-supply ink system has two methods: external supply and self-supply. Is from the gas source - ink bucket - nozzle; self-supply gas path is formed by the ink tank - micro-pump - nozzle. Different products have different air-supplying ink systems. Some products use external air supply methods, followed by compressed air; some products use self-contained air supply; some products use two air supply methods.
The principle of the printing work is that the nozzle is composed of 7 Solenoid Valve-type orifices, and the dot-character character information is ejected through the switch of the master control valve. The digital information can be time, frequency, number of printing, and can be automatically increased. .
When the printer is installed, it must provide a good power supply (220 V ± 5%, 50 Hz) and a reliable ground wire.
If you use an external air supply, you must provide clean, dry, oil-free compressed air to the ink system and install the regulator.
The baffle design must meet the technical requirements of the printer's work. Generally, when the vertical distance between the print head and the product's printing surface is less than 6 mm, the printing effect is the best; the vertical distance should be less than 20 mm at maximum. Otherwise, it is difficult to ensure the clearness of the printing characters. Beautiful.
The Inkjet Printer is best suited for rotary packaging machines. Because the rotary packaging machine makes the packaging bags evenly, orderly and close to the Conveyor Belt conveyor, the printing rate can reach 100%, that is, for each The bag is sprayed on the code, and the use of the two-mouthed packaging machine is also effective. For the four-nozzle packaging machine, it is recommended that the packaging machine should be designed to keep the distance between the four mouths of the packaging machine slightly longer to prevent the two bags from forming a stack, or the two bags being too close to cause the printer to leak. As for the operation of the current four-nozzle packaging machine, it should be standardized to prevent the above problems from occurring.
In a word, the application of coding technology has reduced the labor intensity of workers, increased labor productivity, provided basis for product classification, batch number, and statistics, which is conducive to quality management. The digital numbers on cement bags are clear and standardized, and can be stored for a long time. The anti-counterfeiting and anti-counterfeiting of cement quality at the factory provided the basis for identification.
