Automatic detection mechanism for unqualified metal joint products

The utility model discloses a metal joint unqualified product automatic detection mechanism which comprises a fixing plate, a material storage box, a lifting assembly, a material blocking assembly and a measuring assembly, the material storage box is arranged on a machine table, the fixing plate is arranged at the discharging end of the material storage box, and the material storage box is provided with an installation support for installing the material blocking assembly and the measuring assembly; a detection part is formed between the material blocking assembly and the fixing plate, and the joints in the material storage box are fed into the detection part one by one through the lifting assembly; the measuring assembly is used for detecting the length of the joint; and after the detection is completed, the material blocking assembly is opened to discharge the joints on the detection part. According to the utility model, the structure is simple, automatic detection of the length of the joint is realized, a