Iron printing machine with sheet preheating function

Abstract

The invention discloses an iron printing machine with the sheet preheating function. The iron printing machine comprises a feeder, a cleaning device and a material pushing mechanism; a sheet preheating device is arranged between the cleaning device and the material pushing mechanism and comprises supporting legs and a drying tank; a feeding hole and a discharge hole are longitudinally formed in the drying tank; rubber rolls are connected between machine body plates on the two sides of the cleaning device; rubber roll end surface gears are arranged on the drive side of the cleaning device; an upper row of hot gas pipes, a lower row of hot gas pipes and a row of supporting shafts are arranged in the drying tank; cushion wheels and upward bias resistant magnetic wheels sleeve each supporting shaft; the bottom surface of a sheet enters the drying tank from the feeding hole of the drying tank, clinging to the top surface of each cushion wheel, and is conveyed onto the material pushing mechanism through the discharge hole after being preheated; a fan is arranged on a supporting plate which is arranged under the drying tank; an air outlet hole of the fan is connected with a heat transfer tank; a hot air pipe is arranged between the heat transfer tank and the drying tank; a ventilation pipe is arranged between the bottom of the drying tank and an air inlet hole of the fan; a supporting shaft synchronous drive mechanism is arranged on the drive side of the drying tank; and a spanning connection drive mechanism which passes between the rubber roll end surface gears and the supporting shaft synchronous drive mechanism is arranged on the drive side of the cleaning device. By adopting the iron printing machine, a coating layer of the sheet is harder and more durable, printing ink at a later stage is more lustrous in color, coloring is gorgeous and durable, and the color adhesion force is strong.

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 with a sheet preheating function. 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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