The invention discloses a die-
casting box cover trimming die, which relates to the technical field of die-
casting trimming, and is characterized in that after a hydraulic
machine is started, a pre-pressing plate firstly contacts with the top surface of a box cover plate, then a compression spring is compressed, a top pre-pressure is applied to the box cover plate, and the stability during trimming is ensured; and then the pre-pressing plate continues to move downwards to drive the four edge
cutting knife blocks to carry out transverse one-time edge
cutting treatment on the pouring gate and the
cinder ladle, so that the rapid edge
cutting effect can be achieved, and the problem that a product is lack of meat due to the fact that a material
handle is manually knocked is not likely to be caused. The device has the characteristics that the pre-pressing plate firstly makes contact with the top face of the box cover plate, and then a compression spring is compressed; the pre-pressing plate moves downwards to apply a top pre-pressure to the box cover plate to ensure the stability during edge cutting, and then the pre-pressing plate continues to move downwards to drive the four edge cutting knife blocks to perform transverse edge cutting treatment on a pouring gate and a
cinder ladle, so that the effect of rapid edge cutting can be achieved, and the problem that a product is lack of meat due to manual knocking of a material
handle is not easily caused.