Tank type online defoaming machine and defoaming process thereof

Abstract

The invention discloses a tank type online defoaming machine and a defoaming process thereof. The tank type online defoaming machine comprises a material loading mechanical arm, a material pick-up anddischarging mechanical arm, defoaming tanks, pick-up and transport mechanisms and an unloading mechanical arm; two defoaming tanks are adopted; the two defoaming tanks are arranged side by side on amachine table; the material pick-up and discharging mechanical arm linearly spans over the two defoaming tanks; two pick-up and transport mechanisms are adopted and are arranged before the defoaming tanks; the material loading mechanical arm is arranged at one side of the two defoaming tanks; and the unloading mechanical arm is arranged at the other side of the two defoaming tanks. According to the tank type online defoaming machine and the defoaming process thereof of the invention, a double-defoaming tank parallel design structure is adopted; the double-defoaming tank parallel design structure is adopted and can be effectively closely connected with an automatic production line of liquid crystal module sets; the two defoaming tanks can work alternately, so that the problem of the stagnation of the production line can be well solved; hot gas introduced into the tanks can be effectively, uniformly and rapidly centrifuged so as to be dissipated, and therefore, the problem of the displacement of a partial glass sheet can be solved, heat exchange efficiency in the tanks can be simultaneously improved, gas pressure increase speed in the tanks is increased, and defoaming time is effectively shortened.

Description

technical field [0001] The invention relates to the field of automatic manufacturing, in particular to a tank-type online defoaming machine and a defoaming process thereof. Background technique [0002] In the production process of liquid crystal modules, there are usually air bubbles between the polarizer and the LCD glass sheet. In order to eliminate the air bubbles, after the polarizer film and the LCD glass sheet are bonded, a defoaming process is required. It is to extrude the remaining air bubbles between the bonded glass sheet and the film material by external force to improve the quality of the bonded screen. Degassing of glass sheets is generally done by a degassing machine, such as a high-pressure degassing machine that appears on the market, which uses pressure and temperature to remove air bubbles generated during the lamination of polarizers. The automatic integration of the entire line of liquid crystal modules is the development trend of the liquid crystal ma...

AI Technical Summary

Problems solved by technology

The automatic integration of the entire line of liquid crystal modules is the development trend of the liquid crystal manufacturing industry in recent years and in the future. The defoaming process is an indispensable link in the automatic processing process of the entire liquid crystal module line. There are still the following technical bottlenecks in the process that need to be broken through: 1. Most of the existing defoaming machines adopt a stand-alone structure. When it comes to the process of loading, defoaming, and unloading after the completion of degassing of glass sheets, the time required for complete loading and unloading takes 20-30 minutes, and the time required for degassing after loading is completed is 15-20 minutes; therefore , leading to the discontinuity of feeding, defoaming and unloading of the defoaming machine in the process of connecting with the automatic production line. The upstream and downstream workstations are idle for 15-20 minutes; after the defoaming is completed, the upstream workstation is idle for 20-30 minutes when the material is unloaded; the production line is stagnant for too long, which restricts the entire line The key factor for the improvement of production capacity; 2. The degassing machine can continuously introduce gas to make the glass sheet to be degassed under high pressure environment, so that the air inside the bubble can be squeezed out by the external air pressure; in the actual degassing process, the gas When introduced into the degassing tank, the glass sheet close to the gas inlet is easily subjected to a large gas blowing force, which may cause the position of the glass sheet to shift or warp, which will affect the quality of degassing; in addition, in order to speed up the air pressure, The gas introduced is generally hot gas. Similarly, the temperature rise rate of the glass sheet near the inlet is higher than that of the glass sheet at other positions, and its air pressure rises faster than other positions, which also provides outward pressure to a certain extent. Glass position offset

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