Ball checking mould for bearing assembly line

The invention discloses a ball checking mould for a bearing assembly line, comprising a bottom mould for installing the mould on a frame; the upper part of the bottom mould is provided with a sliding end which horizontally slides in a bearing conveying chute; the upper part of the sliding end is provided with a circular mould core; circular stepped blind holes are arranged in the bottom mould and the sliding end vertically; seven ball sockets for containing bearing balls are uniformly distributed on the mould core in a circular shape; exhaust holes are arranged at the bottom of the ball sockets; and the exhaust holes are communicated with the circular stepped blind holes. When bearings are arranged on the mould core, the bearing balls are arranged in the ball sockets; matched with pressure moulds at the upper parts of the bearings, a vacuum generator which is arranged on the frame vacuumizes the inside of the bearings through the exhaust holes; a control system sets the pressure value when the bearings do not