Patch type encoder detection machine

The utility model discloses a patch type encoder detection machine comprising an inspection jig fixing frame. The patch type encoder detection machine is further provided with a pressing block; the pressing block is fixed on a fixing frame through a retractable spring; the pressing block is provided with a testing thimble; a product moving rail is arranged above the thimble; a rail cover plate is arranged above the rail; and when the retractable spring is reset, a contact of the thimble is higher than the product moving rail. The pressing block is pressed down until the testing contact of the testing thimble is lower than the product moving rail; an encoder to be tested is pushed to be below the rail cover plate from the outer side of the rail and is loosened to move the pressing block up and down; the pressing block and the testing thimble upward pre-press a product; meanwhile, the contact of the testing thimble is contacted with a metal surface of a plastic surface of the encoder to be in a conducted state;