Sheet material conveyance device

A sheet material conveyance device comprising:

• a plurality of first holding heads each having a curved first holding surface for holding a sheet material;
• a first drum structured to hold the plurality of first holding heads at predetermined intervals in a circumferential direction in such a manner that each first holding surface faces an external side, and rotate in a first direction to revolve the plurality of first holding heads;
• a plurality of second holding heads each having a planar second holding surface for holding the sheet material;
• a second drum structured to hold the plurality of second holding heads at predetermined intervals in a circumferential direction in such a manner that each second holding surface faces an external side, and rotate in a second direction opposite to the first direction to revolve the plurality of second holding heads;
• a tilt adjustment mechanism structured to adjust a tilt of the second holding surface with respect to a radius direction of the second drum;
• and
• a speed adjustment mechanism structured to adjust a relative movement speed of one set of the first holding head and the second holding head that perform exchange of the sheet material,
• wherein the first holding head and the second holding head, one of which holds the sheet material, and another one of which does not hold the sheet material, move to a delivery position at which the first holding surface and the second holding surface face each other, by rotation of respective drums, and deliver the sheet material between the first holding surface and the second holding surface in a situation in which the tilt and the relative movement speed are adjusted by the tilt adjustment mechanism and the speed adjustment mechanism.