US Patent No. 10,716,249

COMPONENT MOUNTING MACHINE


Patent No. 10,716,249
Issue Date July 14, 2020
Title Component Mounting Machine
Inventorship Yoshiyuki Fukaya, Chiryu (JP)
Assignee FUJI CORPORATION, Chiryu-shi (JP)

Claim of US Patent No. 10,716,249

1. A component mounting machine configured to mount a component on a board, the machine comprising:a suction nozzle that has a nozzle suction surface to which a component is suctioned;
a camera that is disposed on a lateral side of the suction nozzle and is configured to acquire nozzle imaged data of a tip end of the suction nozzle; and
a control device configured to determine a quality of the nozzle suction surface of the suction nozzle,
wherein the nozzle imaged data includes a nozzle region in which the tip end of the suction nozzle is captured, and a background region in which a background below the tip end of the suction nozzle is captured, and
wherein the control device is configured to calculate a lowermost end position that includes
scanning a plurality of first inspection lines in a vertical direction or a horizontal direction of the nozzle imaged data, and
calculating a lowermost end position of the nozzle suction surface or foreign matter adhered to the nozzle suction surface from a plurality of items of positional information obtained by sensing the nozzle suction surface or foreign matter adhered to the nozzle suction surface by using the plurality of first inspection lines,
calculate a difference that includes
calculating, on the basis of the plurality of items of positional information, a first height, which is a position in the vertical direction of the nozzle suction surface or foreign matter adhered to the nozzle suction surface at a first position that is separated from the lowermost end position by a first set distance or more on one side in the horizontal direction,
calculating, on the basis of the plurality of position information, a second height, which is a position in the vertical direction of the nozzle suction surface or foreign matter adhered to the nozzle suction surface at a second position that is separated from the lowermost end position by a second set distance or more on the other side in the horizontal direction, and
calculating a first difference between the first height and a height of the lowermost end position and a second difference between the second height and the height of the lowermost end position, and
determine the quality of the nozzle suction surface on the basis of the smaller difference of the first difference and the second difference.