Friction device for manufacturing liquid crystal display screen

The invention discloses a friction device for manufacturing a liquid crystal display screen, and belongs to the technical field of manufacturing of liquid crystal displays, the friction device comprises a workbench, and a conveying mechanism for conveying substrate glass and a friction mechanism for rubbing and orienting the substrate glass are movably arranged on the upper surface of the workbench; the friction mechanism comprises a portal frame fixed to the workbench, a lifting air cylinder is arranged on the portal frame, a friction roller is arranged at the output shaft end of the lifting air cylinder, and the friction roller is connected with a guide piece arranged in a sliding mode relative to the portal frame. And a deflection angle theta less than or equal to 30 degrees is formed between the central axis of the friction roller and the vertical line of the moving direction. The method is used for solving the problems that when a liquid crystal display screen is manufactured, a friction roller moves up