The semi-automatic tool comprises a supporting
assembly, the upper portion of the supporting
assembly is connected with a fixing block, a fixing block through hole is formed in the middle of the fixing block, a fixing block groove is formed in the circumferential edge of the fixing block through hole, the fixing block groove is used for containing a sealing
gasket, and the sealing
gasket is matched with the fixing block groove. A plurality of exhaust holes are evenly distributed in the bottom of the fixing block groove, the exhaust holes are connected with a vacuum generator, a shell profiling block is slidably connected into the fixing block through hole, the shell profiling block is used for containing an automobile
lamp shell, the shell profiling block is connected with a lifting
assembly, and the shell profiling block can do lifting motion in the fixing block through hole. According to the tool, when the sealing
gasket is pasted to the circumferential face, to be pasted, of the automobile
lamp shell, the pasting quality is guaranteed, the sealing performance and the assembling quality of the sealing gasket are guaranteed, time and labor are saved, the assembling efficiency is improved, and semi-
automation of installation of the automobile lamp sealing gasket is achieved.