GUIDE POSITION ADJUSTMENT DEVICE, FOLDER GLUER AND BOX MAKING MACHINE, AND FOLDING GUIDE POSITION ADJUSTMENT METHOD

The purpose of the present invention is to provide a guide position adjustment device capable of ensuring folding accuracy even for a corrugated cardboard sheet with a deep box depth (including apparent box depth). This guide position adjustment device comprises upstream side guide members (10) and downstream side guide members (13) arranged in order starting from the upstream side in the sheet traveling direction. Each of the upstream side guide members (10) and the downstream side guide members (13) are mounted in pairs on the right and left sides of a folder gluer. The guide position adjustment device comprises an outlet side guide moving mechanism (50). The outlet side guide moving mechanism (50) is mounted on a folding guide device provided with a frame moving mechanism (46) for translating, by a first actuator, a supporting frame (5) that supports the upstream side guide members (10) and the downstream- side guide members (13), in the device width direction perpendicular to the sheet traveling direction. The outlet side guide moving mechanism (50) moves, by a second actuator (51), an outlet side tip end regulation part of the upstream side guide members (10) relative to the supporting frame (5) in the device width direction within the range on the inner side from the position of an inlet side tip end regulation part in the device width direction.