Intermediate blank connection system for hot-rolled strip headless rolling and connection method

An intermediate blank connection system for hot-rolled strip headless rolling, characterized by comprising an upper cutting device I, a lower cutting device I, an upper cutting device II and a lower cutting device II;

• the upper cutting device II and the lower cutting device II are located behind the upper cutting device I and the lower cutting device I;
• the upper cutting device I comprises an upper knife stand I, an upper cutting edge I arranged on the upper knife stand I, an upper pressing mechanism I for driving the upper knife stand I to make up and down motion, and an upper translation mechanism I for driving the upper knife stand I to make forward and backward translational motion;
• the lower cutting device I is mainly comprised of a lower knife stand I and a lower cutting edge I arranged on the lower knife stand I;
• the upper cutting device II comprises an upper knife stand II, an upper cutting edge II arranged on the upper knife stand II, and an upper pressing mechanism II for driving the upper knife stand II to make up and down motion;
• the lower cutting device II comprises a lower knife stand II, a lower cutting edge II arranged on the lower knife stand II, and a lifting mechanism for driving the lower knife stand II to make up and down motion;
• the upper cutting edge I is arranged above the lower cutting edge I and the upper cutting edge I has a same cutting edge structure as the lower cutting edge I;
• the upper cutting edge II is arranged directly above the lower cutting edge II and the upper cutting edge II has a same cutting edge structure as the lower cutting edge II;
• the cutting edge structures of the upper cutting edge I and the lower cutting edge II are interlaced with each other to cut a front slab under cooperation, and the cutting edge structures of the lower cutting edge I and the upper cutting edge II are interlaced with each other to cut a rear slab under cooperation;
• and the upper pressing mechanism II is provided with a press quantity detection device for controlling the cutting amount of the upper cutting edge II and the lower cutting edge II.