Welding fixture for assembling and manufacturing lithium battery cover plate

The utility model discloses a welding fixture for assembling and manufacturing a lithium battery cover plate, which comprises a fixed table, a battery box is placed on the fixed table, clamping plate frames are arranged on the periphery of the battery box, the clamping plate frames abut against the battery box through second buffer components, a lifting frame capable of lifting is arranged on the fixed table, and a transmission gear is arranged on the lifting frame. The top of the transmission gear is in meshed connection with the toothed long rod, the bottom of the transmission gear is in meshed connection with the first buffer assembly, the toothed long rod is slidably mounted on the clamping plate frame, the first buffer assembly is connected with the clamping plate frame, the cover plate is placed on the top of the toothed long rod and located over the battery box, and the clamping plate frame can clamp the cover plate. The four clamping plate frames can move at the same speed, a battery box and a cover p