Width positioning and detecting device for coated pole piece

The utility model provides a coated pole piece width positioning detection device, which belongs to the technical field of detection and comprises a fixing frame and an adjusting frame, the adjusting frame is mounted on one side of the fixing frame and positioned above a coating machine main shaft, a sliding rail is arranged on the adjusting frame along the length direction of the coating machine main shaft, a light emitting component is arranged on the sliding rail, and the light emitting component is connected with the fixing frame. The light emitting assembly emits light to one side of the coating machine main shaft and slides in the length direction of the sliding rail so as to be aligned with the edge of the coated pole piece. When the coated pole piece width positioning and detecting device provided by the utility model is used, the light emitting component slides along the sliding rail, and the main shaft of the coating machine is adjusted at a place where the light is not overlapped with the edge of t