A coating device for light box cloth

Abstract

The invention provides a coating device for lamp box cloth. Intervals between scrapers and coating rollers are adjustable, so that improvement of product quality is facilitated. The coating device comprises a rack, a first coating roller, a second coating roller and two coating mechanisms, the first coating roller and the second coating roller are adjacently arranged on the upper portion of the rack and synchronously driven by a motor, and the coating mechanisms are arranged on the outer sides of the first coating roller and the second coating roller respectively; each coating mechanism comprises a retaining plate, one scraper and a mounting seat, each retaining plate is obliquely mounted on the outer side of the corresponding coating roller, each scraper is mounted at the bottom of the corresponding retaining plate and fitted with the surface of the corresponding coating roller, each mounting seat is provided with a mounting plane for supporting the corresponding retaining plate, inclination angle of each mounting plane is consistent with that of the corresponding retaining plate, each retaining plate and the corresponding mounting plane are movably connected through a connecting structure, movable direction of each retaining plate is inclination direction of the corresponding mounting plane, and the lower end of each mounting seat is connected with the rack.

Description

Technical field [0001] The invention belongs to the technical field of light box cloth production equipment, and specifically relates to a light box cloth coating device. Background technique [0002] Tarpaulin or light box cloth is a kind of industrial composite cloth with large usage and wide application range. Its typical composite structure is composed of two layers of PVC film and a layer of high-strength base cloth. [0003] The general processing steps of the existing PVC film tarpaulin or light box cloth are sizing, drying, heating and bonding, and cooling and winding. At present, two sizing methods are generally used: one is immersion sizing, the base fabric is completely immersed in the slurry slurry. This method is easy to solidify by itself due to the short opening time of the slurry, and it is easy to waste the slurry and cause environmental pollution. And it needs a long drying time, and the products produced by this method have high hardness, easy aging, and low ten...

AI Technical Summary

Problems solved by technology

At present, two methods of sizing are generally used: one is immersion sizing, and the base fabric is completely immersed in the slurry slurry. This method is easy to solidify by itself because of the short opening time of the slurry, which is easy to waste the slurry and cause environmental pollution. And it needs a long drying time, and the products produced by this method have high hardness, easy aging, and low tensile strength; the second is the scraping method, which uses a metal or non-metallic scraper to remove the viscous A method of slurry coating on the base cloth, the surface of the product obtained in this way is rough, and the physical strength between the base cloth and the coating is low

[0004] As far as the scraping method is concerned, in the actual sizing process, since the distance between the scraper and the coating roller is generally fixed, this leads to certain problems when processing base fabrics of different thicknesses: When coating a thinner base fabric, the slurry coated on the base fabric is too thick, resulting in a waste of slurry and an increase in production costs. When processing a thicker base fabric, the amount of slurry applied is too small , affect the follow-up processing, the above-mentioned problems will have an impact on the quality of the processed light box cloth, therefore, the applicant takes this as the direction of improvement

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