Laminated work production apparatus and production method

A laminated work production apparatus for producing a laminated work by punching a plate-like metal material into a plate-like work of a predetermined shape and stacking a plurality of the plate-like works, comprising:

• a mold for punching the metal material;
• a stacking jig moving mechanism for moving a first stacking jig to a stacking position where the plate-like works are stacked;
• a retention mechanism for retaining the punched plate-like works at a retaining position different from the stacking position until a preset number is reached;
• a knockout mechanism for knocking out a plurality of plate-like works in a punching direction and stacking the plate-like works on the first stacking jig arranged at the stacking position when the preset number of plate-like works are retained in the retention mechanism;
• a conveying device for conveying the first stacking jig, on which the plate-like works are stacked, to the outside of the mold;
• and
• a transfer device for transferring the plate-like works from the first stacking jig to a second stacking jig outside the mold;
• wherein the transfer device rotates the second stacking jig by a predetermined angle about a stacking direction every time the plate-like work is transferred.

A laminated work production method for producing a laminated work by punching a plate-like metal material into a plate-like work of a predetermined shape and stacking a plurality of the plate-like works, comprising the steps of:

• causing the punched plate-like works to be retained;
• knocking out a plurality of plate-like works in a punching direction and successively stacking the plate-like works on a first stacking jig arranged at a stacking position on an extension of the punching direction of the mold when a preset number of plate-like works are retained;
• moving the first stacking jig, on which a predetermined number of plate-like works are stacked, to a loading/unloading position distant from the stacking position in the punching direction and moving the stacking jig to a position away from the punching direction;
• subsequently introducing an empty first stacking jig to the loading/unloading position and moving the empty stacking jig to the stacking position along the punching direction of the plate-like works;
• and
• unloading the first stacking jig moved to the position away from the punching direction to the outside of the mold, transferring the plate-like works from the first stacking jig to a second stacking jig outside the mold, and transferring the plate-like work to the second stacking jig while rotationally stacking the plate-like work every time the plate-like work is transferred.