Double-channel pre-welding machine for square aluminum shell battery

The invention discloses a square aluminum shell battery double-channel pre-welding machine. Comprising a machine table, and a transfer turnover device, a transfer carrying device, a single OK in-shell battery temporary storage device, an NG in-shell battery temporary storage device, two press-fitting transfer devices, two press-fitting devices, two pre-welding transfer devices, a step detection device, a pre-welding device, two resistance measurement transfer devices and two resistance measurement devices which are fixed on the machine table according to a technological process sequence, the device comprises a discharging carrying device, an NG battery temporary storage drawstring and a single OK pre-welding battery temporary storage device. The device is used for pressing the in-shell battery, measuring the step height value of the press-fit battery and judging the qualification, pre-welding the press-fit battery, measuring the resistance value of the pre-welded battery and judging the qualification, and is