Automatic press-polishing machine for gold bracelet

The invention discloses an automatic press-polishing machine for a gold bracelet, and belongs to the field of automatic jewelry machining devices. The automatic press-polishing machine is composed of a base, a guide rail, lateral supporting plates, a swinging shifting fork, a first direct-current motor, a bracelet supporting body, a press-polishing needle, swinging pieces, a lead screw stepping motor, middle clamps, a second direct-current motor, a flywheel, a transmission shifting shaft and the like. The guide rail, the lateral supporting plates, the first direct-current motor, the lead screw stepping motor and vertical plates are installed on the upper portion of the base, the swinging shifting fork is installed on a sliding block, the upper portion of the swinging shifting fork is connected with the bracelet supporting body through the transmission shifting shaft, and the press-polishing needle is fixed to the swinging pieces through the middle clamps. The up-and-down positions of the middle clamps in the swinging pieces are adjusted to enable the press-polishing needle to be in contact with the bracelet, and the second direct-current motor drives the swinging pieces to perform swinging movement through the flywheel. Front-and-back movement is converted into arc-shaped movement of the bracelet through a swinging shifting-fork structure, front-and-back swinging of the bracelet is achieved, and the cambered surface of the bracelet is completely machined; the bracelet supporting body is of a handle cam structure, the bracelet can be effectively prevented from loosening, and the bracelet can be assembled and disassembled in real time.