Discharge device for sliding door

PURPOSE: An assembling device of a linkage type sliding door is provided to install a linkage type sliding door in a desired direction freely and to standardization of sliding doors. CONSTITUTION: An assembling device of a linkage type sliding door comprises a round protrusion(32) and an interlocking roller. The round protrusion is symmetrically formed on both inner walls of a guide rail(30) to guide rolling contact of the interlocking roller. The interlocking roller comprises an upper part(52) having a contact surface(51) contacting the surface of the round protrusion, a lower part(53) installed on a sliding plate, and an assembling unit in which the round protrusion and the contact surface of the upper part are detachably installed.