Double-endless-belt conveyor, turnover module incorporating such a conveyor and folding package production line incorporating such a module

A folding package turnover module that can be incorporated in a folding package production line, comprising:

• a frame having first and second vertical pillars;
• and
• a rotary turnover structure arranged horizontally between the vertical pillars,
• wherein the rotary turnover structure comprises at least one double-belt conveyor comprising:
• first and second single-transport-belt conveyor subassemblies arranged facing each other symmetrically relative to a pinching plane of the double-belt conveyor;
• and
• first and second sets of rollers incorporated respectively in the first and second single-transport-belt conveyor subassemblies and distributed on either side of the pinching plane over a length of transport of the double-belt conveyor, the first set of rollers guiding a first belt of the first single-transport-belt conveyor subassembly and the second set of rollers guiding a second belt of the second single-transport-belt conveyor subassembly,
• wherein the first and second conveyor subassemblies respectively comprise first and second sets of vertically arranged jacks, the first and second sets of vertically arranged jacks being associated respectively with the first and second sets of rollers, each roller of the first and second sets of rollers being mounted on a dedicated respective jack, the at least one double-belt conveyor being arranged vertically, and
• wherein the rotary turnover structure further comprises a horizontal axis of rotation defined between the first and second vertical pillars, the horizontal axis of rotation passing through the pinching plane of the first and second single-transport-belt conveyor subassemblies of the rotary turnover structure, the horizontal axis of rotation being at right angles to vertical planes of the first and second single-transport-belt conveyor subassemblies and to a direction of transport of the folding package.