Injection molding system and method for controlling injection molding system

An injection molding system comprising:

• a first injection molding section that has a wall section and that is configured to mold a workpiece;
• a second injection molding section that has a wall section, that is disposed aligned in a horizontal direction with the first injection molding section, and that is configured to mold a molded article by using the workpiece;
• a robot that is disposed between the first injection molding section and the second injection molding section and that is configured to carry the workpiece from the first injection molding section to the second injection molding section;
• and
• a robot wall section disposed between the first injection molding section and the second injection molding section and extending in the direction in which the first injection molding section and the second injection molding section are aligned, wherein
• the first injection molding section includes a first placement section on which the workpiece is placed,
• the second injection molding section includes a second placement section on which the workpiece used for molding is placed,
• the robot includes
• a base,
• a first arm coupled to the base via a first joint, and
• a second arm coupled to the base via a second joint with a rotation axis parallel to a rotation axis of the first joint,
• as viewed in a vertical direction,
• a first distance, which is the distance between the first joint and the first placement section, a second distance, which is the distance between the first joint and the second placement section, and a third distance, which is the distance between the first joint and the robot wall section, are smaller than a fourth distance, which is the distance between the first joint and a tip end of the second arm when the first arm and the second arm are on a co-linear straight line, and
• in an angular range centered on the first joint from one of the first placement section and the second placement section to the robot wall section, the distance between the first joint and at least a part of the wall section is larger than the fourth distance.