Excessive glue scraping equipment and glue scraping method for processing and pasting touch screen

Abstract

The invention discloses excessive glue scraping equipment and a glue scraping method for processing and pasting a touch screen. The equipment comprises a sealed operation room, an operation table, a first vertical fixing plate, a guide rail, a guide rod, a handle, a first sliding block, a second sliding block, a third sliding block, a fourth sliding block, a first dust collector, a second dust collector, a first scraper, a second scraper, a first connecting rod, a second connecting rod and an air heater. According to the equipment, glue can be well softened, so that the glue scraping effect isguaranteed, during glue scraping, the first connecting rod and the second connecting rod have certain rigidity so that the glue scraping direction and stress stability can be guaranteed, the glue scraping effect can be guaranteed, the glass surface is not prone to being damaged, and moreover, the equipment scrapes the glue in a closed environment, can suck away glue dust generated by glue scraping, so that the influence on subsequent film pasting of the touch screen is avoided, and the yield of the touch screen is improved.

Description

technical field [0001] The invention relates to the field of touch screen processing and manufacturing, in particular, to a touch screen processing and bonding overflow glue scraping equipment and a glue scraping method. Background technique [0002] Touch screen is an important part of modern electronic products. The existing production and processing technology of touch screen is roughly coating-etching-silk-screen-assembly; in the assembly process, the upper glass or patch needs to be bonded with the lower glass. The bonding method is: use a spot gluing laminating machine to point glue on the upper surface of the lower glass, then attach the lower surface of the upper glass to the upper surface of the lower glass, and then squeeze to make the glue fully level, and then perform UV after leveling. Curing, because it is necessary to ensure that the glue between the two pieces of glass is fully and evenly covered between the two pieces of glass, therefore, the amount of glue ...

AI Technical Summary

Problems solved by technology

[0005] The first technical problem is: in the prior art CN108672220A, the squeegee unit is used to squeegee the touch screen to be squeegee; it uses an electric trolley to drive the blade through a corrugated hose to squeegee, and the force or stress of the squeegee comes from the corrugated soft The magnetic force between the tube and the electromagnet, that is, the force-generating part of the rubber scraper. The overall stiffness of the corrugated hose is determined by the stiffness of the corrugated hose itself and the magnetic force between the electromagnet, but the corrugated hose itself is bendable and deformable. The rigidity of the hose does not meet the needs of scraping off relatively hard glue after curing, and the magnetic force between the electromagnets is not stable. It is affected by the current size, the magnet material, and the distance between the two electromagnets. Or when the electromagnet shakes or the corrugated hose is deformed by force, the magnetic force between the electromagnets will change, which will lead to a change in the overall stiffness of the corrugated hose, which will not meet the purpose of removing the cured glue

[0006] The second technical problem is: the glue is hard after UV curing, and it is difficult to scrape the glue. The solution of the prior art CN108672220A is to install a heating element in the cutter head to heat the cutter head, and then the heated cutter head can remove the glue. Heating, so that the glue softens and is easy to scrape off, but in actual situations, the knife head of the glue scraper is usually small in size, it is difficult to install the heating element and wiring processing in the knife head, and the processing accuracy is very high, which is not easy to achieve , leading to an increase in cost, and the cutter head is easily damaged, and the cost of damage is higher

[0007] The third technical problem is: in the prior art CN108672220A, the heated cutter head is used to soften the glue and then scrape the glue, but when using the cutter head to scrape the glue, the contact time between the cutter head and the glue is short, and the softening effect of the glue is general, making the scraping The effect of the glue is not ideal

[0008] The 4th technical problem is: when using the squeegee device in the prior art CN108672220A to squeegee, the squeegee is easy to produce pulverized glue, and the squeegee is easy to produce solid colloidal dust or particles, and the colloidal dust will float in the air, be suspended in the air and Floating in the production workshop, and the follow-up process of the touch screen after scraping the glue is to stick the film. The glue dust suspended in the air will cause white spots or white spots on the glass surface when the film is pasted, resulting in the generation of unqualified touch screens.

[0009] The fifth technical problem is: after dispensing and extruding, the glue will overflow from between the two sheets of glass, that is, overflow from the junction of the lower surface side of the upper glass and the upper surface side of the lower glass, while the prior art CN108672220A When the middle squeegee device is squeegeeing, it can only squeegee on one side, and cannot squeegee on the two sides at the same time, resulting in residual glue on one side, and the squeegee effect is not ideal

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