Liquid crystal display screen stress detection equipment based on clamping type limiting

Abstract

The invention relates to the technical field of liquid crystal display screens, and in particular relates to liquid crystal display screen pressure detection equipment based on clamping type limiting. The equipment comprises a workbench, baffles are symmetrically installed on the surface of the workbench, a transverse plate is arranged on the surface of one baffle, and an air cylinder is connected to the surface of the transverse plate; a limiting piece at least comprises a lead screw rotationally connected to the two baffles, one side of the lead screw penetrates through the baffles, one end of the lead screw is connected with a motor, the surface of the lead screw is in threaded connection with a lead screw nut, a limiting plate is installed on one side of the lead screw nut, a push rod is installed on the bottom face of the limiting plate, one side of the push rod is movably connected with a supporting rod, a concave cavity is formed in the surface of the workbench, and the supporting rod slides in the concave cavity. The limiting plate approaches and extrudes the liquid crystal display screen, the supporting rod slides down along the concave cavity, the supporting rod is attached to the liquid crystal display screen all the time, the side face of the liquid crystal display screen is limited through the limiting plate, inclination and deviation are avoided, meanwhile, the liquid crystal display screen is kept horizontal, and pressure testing is facilitated.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display screens, in particular to a pressure detection device for liquid crystal display screens based on clip-type position-limiting. Background technique [0002] Liquid crystal display is a kind of flat-panel display, which is used for the screen display of televisions and computers. The advantages of the display are low power consumption, small size and low radiation. [0003] After the current liquid crystal display is produced, it needs to pass the pressure testing equipment to test the pressure of the liquid crystal display to determine whether it is qualified. The current pressure testing equipment is composed of a cylinder and a limiter. The cylinder is used as a pressure drive and a limiter. Limit the side position of the liquid crystal display to ensure that the liquid crystal display has good accuracy when performing pressure detection. Among them, the current limiter in the pr...

AI Technical Summary

Problems solved by technology

[0003] After the current liquid crystal display is produced, it needs to pass the pressure testing equipment to test the pressure of the liquid crystal display to determine whether it is qualified. The current pressure testing equipment is composed of a cylinder and a limiter. The cylinder is used as a pressure drive and a limiter. Limit the side position of the liquid crystal display to ensure that the liquid crystal display has good accuracy when performing pressure detection. Among them, the current limiter in the pressure detection equipment is only squeezed by two opposite baffles on the liquid crystal display Due to the current liquid crystal display is easy to install on the wall, the back of the liquid crystal display is in a gradually raised arc structure. When the liquid crystal display is placed on the workbench, the arc-shaped back and the worktable Fitting, it will cause tilt and offset after placement, and there will be problems when the limiter clamps and limits the LCD screen. When the pressure test is performed under the tilted condition, the force formed by the cylinder on the LCD screen will disperse the components. And it affects the accuracy of the pressure test of the LCD screen; secondly, if a fixed contact plate is used, it cannot be in contact with the curved surface of the LCD screen of different sizes.

Images