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Coating scraper with automatic abrasion alarming switch

An automatic alarm and alarm switch technology, which is applied to the device and coating of the surface coating liquid, can solve the scraper blade wear, unfavorable product stability, product quality consistency, and reduce the controllability of the film layer thickness. Uniformity and other issues to achieve the effect of improving stable production

Active Publication Date: 2015-05-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The friction and corrosion of the direct contact 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, most scraper replacements rely on production technicians to manually judge the amount of scraper blade wear based on visual inspection or use time, which leads to randomness and uncertainty in scraper replacement, which is not conducive to product quality. Stable production and consistency of product quality

Method used

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  • Coating scraper with automatic abrasion alarming switch
  • Coating scraper with automatic abrasion alarming switch
  • Coating scraper with automatic abrasion alarming switch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, a coating scraper with an automatic wear alarm switch, especially a contact coating scraper or blade for scraping and modifying the solution on the roller 1 in the gravure coating / printing, letterpress coating / printing process, The coating scraper has a microhole 2, the microhole 2 is a straight blind hole, the bottom of the straight blind hole reaches the critical line 8 of the blade wear amount of 10 when the scraper is scrapped, and an alarm switch lead is set at the opening of the microhole 3. The bottom of the microhole is provided with a liquid-absorbing core 7, and the alarm switch lead wire 3 is connected to the automatic alarm switch 4. When the blade of the scraper is worn to the critical line 8, the worn area 9 of the scraper has been removed, and the bottom of the blind hole is worn through It is a through hole, and after the solution 12 enters the through hole, it contacts with the lead wire of the alarm switch to trigger the automat...

Embodiment 2

[0039] like image 3 As shown, a coating scraper with an automatic wear and tear alarm switch, the scraper is a thin-layer scraper 13, and there are two micropores placed in the thin-layer scraper body, which are respectively the first micropore 16 and the second micropore. Hole 17 is a straight blind hole. The bottom of the blind hole reaches the critical line of 2mm blade wear when the scraper is scrapped. The cross-sectional shape of the micro-hole is circular, and the minimum circumscribed circle diameter of the cross-sectional shape is 0.9mm. The micro-hole is a cylindrical hole. The length of the coating blade is 1000mm, and the two micro-holes are located on both sides of the center line of the blade, such as Image 6 As shown, the adjacent distance between two micropores is 200mm, the alarm switch lead wire 3 exposes the insulating through hole plug 5 to be 1.2mm, and the distance between the alarm switch lead wire and the liquid-absorbing core is 1.5mm, and other feat...

Embodiment 3

[0041] like Figure 4 As shown, a coating scraper with an automatic wear alarm switch, the scraper is an arc scraper 14, the arc scraper body is provided with micro-holes, specifically, the micro-holes are straight blind holes, and the bottom of the blind holes reaches The critical line of blade wear amount 1.5mm when the scraper is scrapped; the angle θ formed between the microhole axis 15 and the blade 11 is 90°.

[0042] The micropores placed in the scraper body have a circular cross-sectional shape. The minimum circumscribed circle diameter Φ of the cross-sectional shape is 0.5 mm. The micropore is a cylindrical hole, the thickness H of the arc scraper is 1 mm, the end of the alarm switch lead wire exposed the insulating through hole plug 5 is 2 mm, the distance between the alarm switch lead wire and the liquid-absorbing core is 1.5 mm, and other features are the same as in Embodiment 1 .

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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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C11/04
Inventor 李宇吉汤勇李宗涛余树东余彬海
Owner SOUTH CHINA UNIV OF TECH
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