A soft leather roller coater

Abstract

The invention provides a roller coater with the high soft leather passing rate. The roller coater comprises a roller coater body, a leather conveyor and a conveying belt. The roller coater body comprises a rack, and the rack is provided with a roller changing mechanism, coating rollers, a pressure roller and a small carrier roller. The rack further comprises a lifting mechanism. The distance between the upper surface of the part, at the pressure roller, of the conveying belt and the coating rollers is adjusted through the lifting mechanism. When leather arrives at or leaves the coating rollers, the lifting mechanism is started, and then the leather is clamped or loosened. Meanwhile, the included angle between the inner tangent line of the small carrier roller and the pressure roller and the horizontal direction is adjusted, and the supporting angle of the part, close to the leather outlet side of the pressure roller, of the conveying belt is adjusted accordingly. By means of reasonable configuration of the included angle and the linear velocity ratio of the coating rollers to the conveying belt, the soft leather passing rate of the reverse coating technology is achieved, the roller coater is applied to leather flaw repairing, and the roller coating quality and efficiency of the roller coater are improved.

Description

technical field [0001] The invention relates to the technical field of roller coating equipment, in particular to a soft leather roller coating machine. Background technique [0002] The finishing process in leather production is to disperse film-forming agents, colorants, additives, etc. in water or organic solvents to form a slurry mixture (finishing agent), which is applied to dry blanks by scraping, spraying or roller coating. The surface of the hide is dried to form a uniform film on the surface of the hide; the finishing process can improve the performance of the hide, and can also repair the damage of the hide with defects (such as insect pits, broken defects, etc.) to improve the grade of the hide . [0003] At present, most of the existing finishing processes use manual scraping to repair the damage of the skin. Due to many uncontrollable factors in the manual operation, there are problems such as large amount of spray paste, uneven scraping on the surface of the s...

AI Technical Summary

Problems solved by technology

At present, the roller coating process is mainly based on the reverse coating process. The reverse coating process can coat nearly 100% of the paint on the leather sheet. In the reverse coating process, because the movement direction of the finishing roller and the leather sheet is opposite to the movement direction of the leather sheet, the finishing roller There will be a thrust opposite to the direction of the hides on the hides. Relatively thin and soft hides cannot pass through, and the pass rate of soft hides is extremely low. In view of this, the reverse coating process has not been used to replace manual scraping on hides at this stage. repair injury

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