Device for manufacturing electrode foil with resin frame

A manufacturing device (1) for welding a resin frame (12) to an edge portion (11a) of an electrode foil (11) is provided with: a pair of holding portions (2A, 2B) which are connected to each other via a rotation axis (L) extending along the edge portion (11a) of the electrode foil (11) and which hold the resin frame (12); and one or more welding parts (3) provided in each of the pair of holding parts (2A, 2B), each of the pair of holding parts (2A, 2B) being capable of shifting between a receiving posture (PR) in which the resin frame (12) can be received from an external supply device, and a welding posture (PW) in which the resin frame (12) can be welded from the external supply device by rotation of the rotation axis (L) around the axis. The welding posture (PW) is a posture in which the resin frame (12) is welded to the edge portion of the electrode foil (11) by the welding portion (3), and when one of the pair of holding portions (2A, 2B) is in the welding posture (PW), the other of the pair of holding p