Manufacturing device of square battery

The utility model discloses a manufacturing device of a square battery, the square battery comprises a shell, a positive plate, a negative plate, a diversion strip and a collector plate, the positive plate and the negative plate are arranged in the shell, the positive plate and the negative plate are mutually overlapped through a diaphragm to form a pole group, each of the positive plate and the negative plate comprises a base body and a tab, one side of the tab is connected with the base body, and the other side of the tab is connected with the collector plate. The other sides of at least two adjacent tabs are tightly attached to each other to form a welding surface, a flow guide strip is stacked between two adjacent welding surfaces, and the flow guide strip is tightly attached to the welding surfaces and is welded together with the welding surfaces through a collector plate; the manufacturing device comprises an adjusting assembly arranged on the side face of the pole group and used for uniformly adjusting