Detection device and packaging machine

The utility model relates to the field of detection, in particular to a detection device and a packaging machine. The detection device is used for the packaging machine, the packaging machine comprises a first conveying mechanism, the first conveying mechanism is used for conveying packaging materials, a plurality of sub-packaging materials are arranged in the packaging materials, the detection device comprises a first detector, a detector assembly and a controller, and in the packaging material conveying process of the first conveying mechanism, if the first detector detects the packaging materials, the controller controls the first detector to detect the sub-packaging materials. The detector assembly obtains the position information of the sub-package in the package, and when the sub-package is lacked in the package, the detector assembly sends an error signal to the controller. According to the detection device and the packaging machine, the problem that in an existing packaging machine, after the sub-pack