Printing unit and ink-jet printing machine

Abstract

The invention is suitable for the technical field of printing equipment and provides a printing unit and an ink-jet printing machine. The printing unit comprises a cylindrical printing roller, a hold-down roller matched with the printing roller and used for holding down a printing medium and a controller roller used for controlling the tensile force of the printing medium, wherein the hold-down roller and the control roller are arranged on two opposite sides of the printing roller respectively, and the printing medium passes through the hold-down roller, then fits the outer circumferential surface of the printing roller and bypasses from the other side of the printing roller to the control roller; and all rows of ink-jet heads are arranged above the printing roller in a circling manner in the axial direction of the printing roller at equal row distances, a nozzle of each ink-jet head points to the inner normal direction of the outer circumferential surface of the printing roller, and the distances between the bottom ends of all the ink-jet heads and the outer circumferential surface of the printing roller are equal. Owing to the cylindrical printing roller and the plurality of rows of ink-jet heads uniformly arranged above the printing roller in a circling manner, the printing unit can realize high-speed continuous ink-jet printing of the printing medium.

Description

technical field [0001] The invention belongs to the technical field of printing equipment, and in particular relates to a printing unit and an ink-jet printing machine including the printing unit. Background technique [0002] The inkjet printing machine is to input the pattern into the computer in digital form, edit and process it through the computer printing color separation and drafting system, and then the computer controls the micro piezoelectric inkjet head to spray the special dye solution directly onto the textile to form the desired pattern. Patterns are required, and then different post-treatments are done according to the composition of different fabrics, such as drying and color fixing. [0003] Existing inkjet printing machines, such as attached figure 1 As shown, most of the printing medium 30' is adhered to the printing belt 90' by attaching glue or other types of adhesives on the printing belt 90', and the printing belt 90' is compatible with printing with ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a printing unit and an inkjet printing machine using the printing unit, aiming at solving the problem of slow printing speed of the inkjet printing machine in the prior art and the need to use a printing guide belt to adhere to the printing medium during the printing process. , technical problems of cumbersome printing process and complex structure

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