METHOD FOR CUTTING RUNNING GATE OFF OF INJECTION-MOLDED PART

摘要

Disclosed is a method for cutting a running gate (3) off of an injection-molded part. The method comprises determining a position of connection of the injection-molded part with the running gate (3); and performing laser cutting at the position of connection by means of a laser light source (5) outside the injection-molded part, the laser being obliquely directed at the position of connection at a predetermined angle. During the laser cutting, the external laser light (5) cuts along the interface of the injection-molded part and the running gate (3), thus cutting the running gate (3) off of the injection-molded part at the position of connection. In the method, the laser light source (5) cuts in an oblique direction instead of in a vertical direction as in the prior art. In this way, the external laser light source (5) can cut along the interface of the injection-molded part and the running gate (3) to completely cut the running gate (3) off of the injection-molded part, thus avoiding leaving a residual running gate piece (6) on the injection-molded part.