Method for assembling front backboard of large-screen display

The invention discloses a method for assembling a front back plate of a large-screen display. The method comprises the following steps: S1, preparing a plastic frame and a hardware back plate, wherein the plastic frame and the hardware back plate are respectively manufactured and formed by respective templates; s2, assembling and buckling are conducted, specifically, the hardware back plate is installed in the plastic frame, a buckling cover is attached to a positioning block, and a hot melting point on the positioning block extends out of a through hole; s3, heating and hot melting are conducted, specifically, a hot melting tool is used for heating and melting a hot melting point and pressing is conducted downwards to form a mushroom head shape, so that the hardware back plate and the plastic frame are fixed, and at the moment, reverse buckling grooves are formed in one pair of edges of the plastic frame; and S4, fitting installation: inserting the light guide plate and the reflecting film into the inverted