Roller coater

Abstract

The invention provides a roller machine suitable for coating chemical coating, which is characterized in that the roller machine comprises two sets of coating mechanism arranged top to top, a supportroller mechanism, a turning roller component, a frame, a synchronous mechanism, a shower, a back-coated lifting device and a transmission mechanism. Back coating frames of a coating roller device, a reclaiming roller device and a regulating roller device fitted with specially made polyurethane material are driven by an oil cylinder and synchronous lifting at both sides is assured by the synchronous mechanism in the coating mechanism; clearance among the coating roller device, the reclaiming roller device and the regulating roller device is regulated by the regulating mechanism to regulate coating thickness. The shower line is in a lacquer tray of a front coating mechanism and a flat mouth shower with a valve is arranged on the shower line; flow rate of the paint is controlled and coating thickness is adjusted by regulating the valve. Jet tube mode is adopted in the lacquer tray of a bottom roller in the back coating mechanism; paint is agitated to prevent from deposition. The roller machine has the advantages that double-roller coating structure is adopted and one is used and the other is standby, maintenance and exchanging color are carried out online, time is saved and productivity is improved.

Description

technical field [0001] The invention belongs to a roller coating machine suitable for coating chemical coating used in the metallurgical industry. Background technique [0002] The shape of the base material is crucial to the coating quality, and the most common defects of the plate are wavy edge, scoop and camber. In ZL200420057820.6, a vertical roller coater is disclosed. Since its two coating heads are not at the same height, the forces acting on the steel strip by the two coating heads are not in a straight line when coating. The above-mentioned defects that exist will cause the coating head and the surface of the steel strip to not be in close contact, which will affect the quality of the steel plate coating. On page P173 of "Color-Coated Steel Sheet Production Process and Equipment Technology" edited by Li Hongbo, Li Qiping, and Han Zhiyong, the winding roller coating machine that adopts the vertex-to-vertex coating method often suffers from sickle bending when the pr...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the impact of plate shape defects on roller coating, and the effect of online maintenance and color change cannot be realized by a single pair of coating heads, the present invention adopts a horizontal double-roller coating structure, and all four coating heads are equipped with a three-roller type; coating The roller is made of special polyurethane material, and the rubber layer has good elasticity. When the coating head is pressed together, the elastic rubber layer compensates for the defects of the substrate

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