The invention discloses a compound hard
paperboard production line with automatic overturning and paper collecting functions. The compound hard
paperboard production line comprises a compound
machine, a paper
cutting machine, a paper feeding platform and a paper collecting table, and is characterized in that a
paperboard overturning mechanism is arranged between the paper
cutting machine and the paper feeding platform and comprises a paperboard overturning and conveying
assembly, the paperboard overturning and conveying
assembly comprises an overturning rack, an upper conveying belt, a lower conveying belt and a paper stop board, the overturning rack can perform 180-degree reciprocating overturning motion, the overturning of the overturning rack is pushed by an overturning pushing part, the upper conveying belt is arranged at the upper part of the overturning rack, the lower conveying belt is arranged at the lower part of the overturning rack, a material passing channel allowing stacked paperboards to pass is reserved between the upper conveying belt and the lower conveying belt, the paper stop board is movably arranged at an outlet of the material passing channel, and when the overturning rack performs forward
turning action, the paper stop board blocks the outlet of the material passing channel. According to the compound hard paperboard
production line with the automatic overturning and paper collecting functions, not only is automatic production of compound hard paperboards realized, but also the hard paperboards are automatically and flatly stacked and collected with high quality, the flatly stacked and collected hard paperboards can directly meet requirements of mechanical packaging, and the labor intensity of a worker is greatly reduced.