The visual positioning system consists of a CCD camera and a driving camera, a driving system for the manipulator, a walking motor, and a display screen for displaying the camera image in the control system. When you use a visual dispenser, you should talk about it. At the beginning of the manipulator, the position of the needle is adjusted to a set coordinate position, and then CCD camera is used to confirm the position and coordinate of the dispensing head to feedback the real coordinate position, so as to adjust the position of the dispensing head. Then, the laser height detection system is used to measure the actual height of the needle by laser, so as to realize the confirmation of the three axis position of the dispensing needle and locate the needle. When the dispensing head moves, the position must be constantly recognized until the end of the dispensing position. The height distance between the rubber head and the product must be appropriate, and no deviation can be observed.