Paper outlet device, corrugated board die-cutting machine and corrugated board production line thereof

The utility model discloses a paper discharging device, a corrugated board die-cutting machine and a corrugated board production line thereof. The paper discharging device is installed on a die-cutting machine of a corrugated board and comprises a material storage cavity, a paper twisting mechanism and a driving mechanism. According to the paperboard conveying device, the paperboard at the top isfirstly conveyed out, and compared with a traditional paperboard conveying-out mode at the bottom, friction force needed by paperboard conveying-out is smaller, namely, the pressure of the rubber roller on the paperboard is smaller, the number of layers of the paperboard is larger, the difference value between the friction force of the traditional mode and the friction force of the paperboard conveying device is larger, and the paperboard conveying effect is better. The friction force of the mode provided by the invention is fixed, which means that the conveying speed of the paperboards is fixed and controllable, so t