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Vacuum coating technique of external surface coating and coating device

A technology of vacuum coating and process method, which is applied in the direction of surface coating liquid device, coating, pretreatment surface, etc., which can solve the problems of not being able to coat thickly at one time, increased processing costs, and local corrosion of metals, and achieve reduction Waste of manpower and materials, increased contact area, and high-quality production effects

Inactive Publication Date: 2008-10-22
邓立
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for efficient and effective coatings on metal surfaces that are difficult to achieve without generating excessive foam when applying them due to factors like temperature changes over time (temperature affecting how well they stick) or other environmental variables such as humidity. By controllably increasing atmospheric pressure at different points along an axis within specific ranges, these techniques help create consistently strong films while minimizing any unwanted side reactions caused by airborne particles. Additionally, this technique helps maintain uniform film properties across multiple parts being treated simultaneously. Overall, this new technology provides technical benefits including improved productivity rates, reduced labor costs, enhanced accuracy, and better control over layer thicknesses achieved throughout manufacturing processes.

Problems solved by technology

The technical problem addressed in this patents relates to improving coatings on surfaces that require high-viscous materials like paints due to their slow evaporation during production. This can lead to poor quality results with increased risk of defects caused from unwanted particles called “smears". Current methods involve removing excessive amounts of liquid before applying these layers, leading to decreased productivity and higher cost associated therewith.

Method used

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  • Vacuum coating technique of external surface coating and coating device

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In order to solve the problem of insufficient adhesion and subsidence of the scraping putty before spraying the primer on the fiberboard in the wood-based panel, which leads to the need for multiple scraping, this device is used to implement as follows:

[0025] (1) The workpiece processed by the MDF is smoothed with sandpaper or abrasive belt, the burrs are removed, and the surface is cleaned with a vacuum cleaner, and the pretreatment is completed.

[0026] (2) Start the vacuum pump 9, the vacuum aspirator 2 is connected with the vacuum pressure tank 10 (pressure-0.09MPa), the MDF is a porous non-completely airtight material, and the vacuum aspirator 2 is divided into two suction ports, which can be adjusted independently Vacuum pressure, the size of the front suction port is large (pressure -0.06~-0.07MPa), which is convenient for rapid suction and degassing, and the rear suction port is narrow (pressure -0.07~-0.08MPa), so as to ensure the elasticity of the tail of t...

Embodiment 2

[0034] A curved plastic panel was originally sprayed with a special PU primer, and then re-sprayed with a PU high-gloss topcoat. The utilization rate is 50%. The paint mist and solvent volatilization lead to poor working environment, and long-term operation is easy to cause occupational diseases. Now use this process and special equipment to process as follows:

[0035] (1) The surface of the curved plastic plate needs to be painted with 200-mesh silica sand, then washed with deionized water and dried.

[0036] (2) Start the vacuum pump 9, the vacuum aspirator 2 is connected with the vacuum pressure tank 10 (pressure-0.03MPa), the plastic part is a completely airtight material, the vacuum aspirator is divided into 1 suction port, and the vacuum pressure is adjusted- 0.02~-0.01MPa; the elastic seal 6 is made of 3mm thick silicone film, and the elastic seal 6 is also processed into an arc according to the arc of the board, and can be naturally and tightly pressed on the board u...

Embodiment 3

[0044] The surface of a steel metal ceiling needs to be coated with colored solid-color acrylic paint. The focus is on the adhesion and anti-corrosion protection of the paint film, and the fullness of the paint film is not high. Agent = 1: 0.5: 0.7, now adopt this process and device as follows:

[0045] (1) After sandblasting, alkali washing, pickling, and phosphating, the plates are washed with deionized water and dried.

[0046] (2) Start the vacuum pump 9, the vacuum aspirator 2 is connected with the vacuum pressure tank 10 (pressure-0.06MPa), the vacuum aspirator 2 is a suction port, adjust the vacuum pressure -0.04~-0.05MPa; the elastic seal 6 It is made of 3mm thick silicone film, which can be naturally and tightly pressed on the plate under the action of vacuum negative pressure; the elastic sealing spacer 7 is made of 10mm thick silicone film.

[0047] (3) The paint formula is adopted as paint: curing agent: diluent=1: 0.5: 0.2, the paint is filled in the feed storage...

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Abstract

The invention discloses a vacuum coating process method for an external surface coating and a coating device, belonging to the technical field of surface coating. The technical key point of the method sequentially comprises surface disposal, surface vacuuming, coating, and coating thickness-setting; the technical key point of the device comprises a workpiece delivery device; wherein, the delivery device is sequentially provided with a vacuum aspirator, a coater and a coating thickness-setting machine along the delivery direction; the vacuum aspirator is connected with a vacuum source; the coater is connected with a material supply storage tank of the coating material; the coating thickness-settiing machine is arranged at the rear end part of the coater; the surface contact part between the vacuum aspirator, coater and the workpiece is provided with an elastic sealing part; an elastic sealing separation body is also arranged between the vacuum aspirator and the coater. The method and the device of the invention have the advantages of high utilization ratio of the coating material, strong adhesion of the coating, reduced settlement of the coating, high coating process efficiency, and the like, and are used for the external surface coating disposal of the workpiece.

Description

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Claims

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Application Information

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Owner 邓立
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