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 support roller 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 coater suitable for coating chemical coatings used in the metallurgical industry. Background technique [0002] The shape of the substrate is very important to the quality of the coating. The defects of the board are mainly wave edges, buckling and sickle bends. In ZL200420057820.6, a vertical roller coater is disclosed. Because the two coating heads are not at the same height, the force of the two coating heads on the steel strip is not in a straight line when coating, because the surface of the steel strip The above-mentioned defects will cause the coating head to not be in close contact with the surface of the steel strip, which will affect the quality of the steel plate coating. However, the winding roller coater using vertex-to-vertex coating method introduced on page P173 of "Color Coated Steel Plate Production Process and Equipment Technology" edited by Li Hongbo, Li Qiping and Han Zhiyong is often caused by the sick...

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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