Sucking device for screening chip resistors

The invention relates to the field of chip resistor processing, and discloses a suction device for chip resistor screening, which comprises a protection plate, a first conveyor belt is mounted in the protection plate, the inner wall of the protection plate is fixedly connected with a sorting track, and a second conveyor belt is mounted on the front side of the protection plate. A displacement rod is slidably connected to the top of the protection plate, a bearing block is slidably connected to the top of the displacement rod, a negative pressure device body is fixedly connected to the top of the bearing block, storage batteries are installed on the two sides of the top of the bearing block, and a butt joint block is fixedly connected to the bottom of the bearing block; the inner wall of the butt joint block is slidably connected with a plurality of quick release blocks, the bottoms of the quick release blocks are fixedly connected with a suction disc, and the bottom of the suction disc is fixedly connected wi