Special positioning device for liquid crystal module assembling machine

Abstract

The invention discloses a special positioning device for a liquid crystal module assembling machine, which comprises a turntable mechanism, an air supply path and a backlight four-side mechanical positioning mechanism, wherein the turntable mechanism is provided with a turntable power motor, and a power output shaft of the turntable power motor is connected with an input shaft of a turntable power transmission speed reducer; an output shaft of the turntable power transmission speed reducer is connected with an input shaft of a 90-degree operation cam indexer, the 90-degree operation cam indexer is installed on the turntable mechanism installation base, a four-station turntable is installed on an output shaft of the 90-degree operation cam indexer, four stations are evenly distributed on the four-station turntable, and each station is provided with a negative pressure workbench. According to the mechanism, perfect matching among backlight mechanical positioning, a backlight film tearing and fitting process and backlight material circulation is achieved, the positioning function is separated from stations, the defect that deviation exists in four mechanical positioning due to the fact that the positioning mechanism moves along with the stations is overcome, and the consistency of mechanical positioning on a single station can be guaranteed.

Description

technical field [0001] The invention relates to the field of electronic communication technology LED liquid crystal panel display manufacturing, in particular to a special positioning device for a liquid crystal module assembly machine. Background technique [0002] In the field of LED liquid crystal panel display manufacturing, liquid crystal glass is a display glass that uses liquid crystal control light transmittance technology to achieve color. The backlight is the backplane that reflects behind the liquid crystal glass and provides a light source for lighting. LED LCD display screen is a combination of the two. Liquid crystal module assembly machine is the key equipment for manufacturing liquid crystal display modules. It adopts image alignment system, precision motion control and other technologies, and realizes backlight through technological processes such as glass tear film, backlight tear film, and glass backlight lamination assembly. Electrical and mechanical co...

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Problems solved by technology

[0003] In the prior art, the backlight positioning and station circulation in the liquid crystal module assembly machine mainly have the following methods and disadvantages: (1) the backlight positioning adopts the image system for positioning, and the station material circulation adopts the layout of the turntable station. Firstly, the imaging system is expensive, and at the same time, in order to obtain a clear image quality, the precision of the mechanical parts and the light transmittance of the material are higher. If mechanical positioning is used, the mechanical positioning cannot be separated from the turntable, so that the mechanical positioning will follow the turntable. Movement, there are errors in the mechanical positioning of the four stations, and the consistency of each positioning at a single position cannot be guaranteed; (2) The backlight positioning adopts the mechanical positioning method, and the material circulation of the stations adopts the linear station layout method. In this method, because the mechanical positioning cannot be overlapped with the film tearing and bonding process stations, it is necessary to go to the process station to perform film tearing and bonding after the positioning is completed, resulting in a waste of space and efficiency. At the same time, it is impossible to realize multi-station simultaneous operation. Function

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