Assembling method and device of packaged air conditioner rear board assembly

The invention discloses an assembling method and device of a packaged air conditioner rear board assembly. The assembling method includes the following steps: placing riveted or welded parts into corresponding positioning holes formed in a small material positioning plate, conveying the riveted or welded parts into a riveting device or a welding device and detecting in-place signals of the small material positioning plate through a first sensor; conveying rear boards to the riveting device or the welding device through a conveying device and detecting the in-place signals of the rear boards through a second sensor; starting the riveting device or the welding device through a controller and connecting the riveted or welded parts on the rear boards; conveying the rear boards to the riveting device or the welding device at the next station through the conveying device after operation of the riveting device or the welding device is completed so as to complete connection of other parts with the rear boards. By adopting the assembling method and device of the packaged air conditioner rear board assembly to assemble the rear board assembly, the automatic degree is high, labor intensity is reduced, and production efficiency and product quality are improved.