Sheet cyclic heating device of metal decorating machine

Abstract

A sheet cyclic heating device of a metal decorating machine is connected between a cleaning device and a material pushing mechanism in a positioned mode. The sheet cyclic heating device comprises a drying seat. The drying seat comprises supporting legs and a heating box. A sheet feeding port linked to the cleaning device and a sheet discharging port linked to the material pushing mechanism are formed in the two sides of the heating box in the longitudinal direction. A supporting plate is arranged below the heating box. A centrifugal fan is arranged on the supporting plate. A heat transfer box is arranged on the centrifugal fan. An air outlet of the centrifugal fan is in sealing connection with the heat transfer box. A heating component is arranged in the heat transfer box. A hot air pipe is arranged between the heat transfer box and the heating box. A vent pipe is arranged between the heating box and an exhaust inlet of the centrifugal fan. One side of the heating box is provided with a cross driving mechanism which is arranged between the heating box and the cleaning device in the longitudinal direction. An upper row of hot air pipes with air outlets and a lower row of hot air pipes with air outlets are arranged in the heating box. A row of supporting shafts are arranged between the two rows of hot air pipes. The supporting shafts are sleeved with cushion wheels for sheet conveying in a positioned mode. A coating printed on a metal sheet is firmer, the coating is harder and more durable, the subsequent colored printing ink has higher glossiness, the color is more gorgeous and lasting and does not go bad, and the color adhesive force is high.

Description

technical field [0001] The invention belongs to the technical field of printing equipment, and relates to an iron printing machine, in particular to an iron printing machine sheet circulation heating device. Background technique [0002] In the production of tinplate printing, the drying of coatings and inks is a complex physical and chemical reaction process. Because tinplate is insoluble in water and does not absorb solvents, generally before entering the iron printing machine for ink coating, the surface of the metal sheet is primed and dried with paint, but if the drying effect of the paint surface is not ideal, the surface will appear sticky and incomplete Curing will affect the post-printing effect. If the coating and ink are not dry enough to cause the paint film to be tender, the surface pattern will be easily changed or scratched, especially when it is used as a container material for canned food or beverages. If the food or beverage comes into direct contact with ...

AI Technical Summary

Problems solved by technology

Because tinplate is insoluble in water and does not absorb solvents, generally before entering the iron printing machine for ink coating, the surface of the metal sheet is primed and dried with paint, but if the drying effect of the paint surface is not ideal, the surface will appear sticky and incomplete Curing will affect the post-printing effect. If the coating and ink are not dry enough to cause the paint film to be tender, the surface pattern will be easily changed or scratched, especially when it is used as a container material for canned food or beverages. After the food or beverage comes into direct contact with it, the taste will change before the expiration date, which will affect the health of the body

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