Printing system

A printing system comprising:

• a first robot being movable;
• a second robot located in a side of the first robot in a first direction and being movable;
• a connecting portion connecting the first robot and the second robot;
• a printing portion connected to the connecting portion and configured to perform 3D printing;
• a supply portion configured to supply a material to the printing portion;
• and
• a controller electrically connected to at least one of the first robot, the second robot, the connecting portion, and the printing portion, and configured to control an operation of the at least one of the first robot, the second robot, the connecting portion, and the printing portion,
• wherein the printing portion includes:
• a discharge member connected to the supply portion and configured to discharge the material;
• an upward and downward movement member configured to move the discharge member in a second direction;
• and
• a leftward and rightward movement member engaged to the upward and downward movement member and configured to move the upward and downward movement member in the first direction,
• wherein the supply portion includes a storage member configured to store the material, and
• wherein the storage member located on an upper side of any one of the first robot and the second robot is coupled to the supply portion,
• wherein the controller is located on an upper side of another one of the first robot and the second robot,
• wherein lengths of the storage member and the controller along the second direction correspond to each other, and
• wherein one end portion of the connecting portion is connected to the controller, and an opposite end portion of the connecting portion is connected to the storage member.