The invention discloses an automatic packing unit for an
injection molding machine. The unit comprises a four-axis
robot packing device, a detection device, an
injection molding machine body, a workpiece storage box and an unqualified workpiece storage box, wherein the four-axis
robot packing device is located at the side edge of the
injection molding machine body, the defection device is fixed atthe side edge of a conveying sliding rail, and is parallel to the conveying sliding rail, and the storage box is located below a four-axis
robot, and is used for receiving a working conveyed by the four-axis robot. Compared with the prior art, the automatic packing unit for the injection
molding machine can be fully automatically connected to the injection
molding machine and a product full-automatic
assembly line through the AGV trolley, can scan the workpiece in a packing process, obtain actual data of the workpiece, compare the actual data with preset data, detect a defect of the workpiece, and determine a
quality level of the workpiece, quality inspection and packing processes are organically combined, so that the working efficiency is improved, and by detecting a superior product rate in the workpiece storage box in real time, placement of workpieces with different quality grades is controlled.