Punching die device with overload detection function

The invention discloses a stamping die device with an overload detection function. The stamping die device comprises a core punch (1), a punch handle of the core punch (1) is inserted into an inner hole in the front portion of the installation rod (2), and the nut (3) is locked at the front end of the installation rod (2) to prevent the core punch handle from moving forwards. A spring (6) sleeved on a spring guide column (7) is filled in an inner pipe of the mounting rod (2), the tail end of the spring (6) extends out of the inner pipe of the mounting rod and is connected with a spring adjusting gasket (8) attached to the cavity wall of the main sliding block, and the top end of the spring guide column (7) presses and props against a punching handle of the core punch (1); the installation rod (2) is provided with a proximity switch (9), and the measuring end of the proximity switch (9) right faces the cylindrical face of a punching handle of the core punch (1). The stamping device has the technical effects th