Welding spot detection device for PCB production

The utility model relates to a welding spot detection device used for PCB production, comprising a workbench used for placing a PCB, a front end portion of the workbench is provided with a feeding device used for moving the PCB to the workbench, a rear end portion of the workbench is provided with a first rectangular coordinate type mechanical arm, a hand portion of the first rectangular coordinate type mechanical arm is provided with a laser two-dimensional sensor, and the laser two-dimensional sensor is connected with the workbench. Two first laser displacement sensors are arranged on the upper surface of the rear portion of the workbench in a spaced mode, the distance between the two first laser displacement sensors is not larger than the width of a PCB, a control circuit board integrated with a communication module is arranged at the right end of the workbench, and the communication module is in communication connection with a control terminal. The feeding device, the first rectangular coordinate type mec