Coating scraper with automatic abrasion alarming switch

Abstract

The invention discloses a coating scraper with an automatic abrasion alarming switch, and particularly relates to a contact type coating scraper or blade for scraping ornament of a solution on a roller in a gravure coating / printing, and relief block coating / printing technology. The coating scraper is provided with a micro hole which is a straight blind hole; the bottom of the straight blind hole reaches the critical line of the blade abrasion loss when the scraper is scraped; the opening part of the micro hole is provided with an alarming switch lead connected with the automatic alarming switch. When the scraper blade is abraded to the critical line, the bottom of the blind hole is worn to form a through hole; after the solution enters the through hole, the solution is in contact with the alarming switch lead, and the automatic alarming switch is triggered.

Description

technical field

[0001] The invention relates to a coating scraper, in particular to a coating scraper with an automatic wear alarm switch. Background technique

[0002] Coating blades or blades are widely used in the traditional paper industry for coating, and in recent years have also been widely used in emerging fields, such as the coating of organic thin film materials, including optical films, organic solar cells, organic light-emitting materials, lithium ion electrodes, etc. . In most cases, the function of the coating blade is to scrape off the coating solution on the roll (grooved, convex or smooth), or on the substrate. The direct contact friction and corrosion between the scraper and the roller, the scraper and the substrate will cause the wear of the scraper blade. The worn scraper has a great impact on the coated film, directly reducing the controllability of the film thickness and the uniformity of the film surface. At present, in actual industrial production,...

Images