Manufacturing device and manufacturing method for heat exchanger and transport carriage used for manufacturing device

A manufacturing device for manufacturing a heat exchanger including a flat tube and a fin that is formed in an elongated plate shape and that includes a fin slit formed by notching the fin in a direction orthogonal to a longitudinal direction of the fin, the manufacturing device comprising:

• a transport carriage configured to transport the flat tube to a predetermined delivery position while the flat tube maintains an upright posture;
• and
• an insertion head configured to move up and down in order to receive the flat tube from the transport carriage and then insert the flat tube into the fin slit from above the fin,
• the transport carriage including a first mechanism having a groove configured to receive the flat tube, the first mechanism being configured to change the flat tube from an inclined posture to an upright posture by narrowing a groove width of the groove after the groove receives the flat tube.