Paint supply system and paint supply method

A paint supply system connected to an application part which moves relative to a coated object and applies paint on the coated object and supplying the paint to the application part, the paint supply system comprising:

• a first cylinder device moving together with the application part, adapted to supply the paint stored therein to the application part, and arranged in the vicinity of the application part;
• a second cylinder device adapted to temporarily store next applied paint in a state of being disconnected from the first cylinder device during an application of the paint by the application part, and to supply the next applied paint to the first cylinder device in a state of being connected to the first cylinder device after the application of the paint by the application part;
• a supply valve part connected to the second cylinder device, at least during the application of the paint by the application part, to selectively supply paint and cleaning fluid to the second cylinder device;
• a first connection part which is connected to the first cylinder device and which is movable together with the application part;
• and
• a second connection part which is connected to the second cylinder device, and is adapted to be connected to the first connection part, the second connection part being movable in a vertical direction by a second actuator,
• wherein the first cylinder device and the first connection part are movable via a first actuator,
• wherein when the application of the paint by the application part is being performed, the second connection part is disconnected from the first connection part by moving the second connection part upward in the vertical direction by the second actuator, and
• wherein when the next applied paint is supplied from the second cylinder device to the first cylinder device after the application of the paint by the application part, the first connection part is moved by the first actuator to a predetermined position that is downward of the second connection part and upward of the supply valve part in the vertical direction, and the second connection part is connected to the first connection part bar moving the second connection part downward in the vertical direction by the second actuator.