Circuit board fixed establishment , transfer system and surface mounting production line

The utility model discloses a circuit board fixed establishment, transfer system and surface mounting production line, wherein circuit board fixed structure for the fixed circuit board is provided with first locating hole on the circuit board, include: the carrier of vacuum base and bearer circuit board, be provided with the second locating hole of inhaling the hole and mating with first locatinghole on the carrier, the second locating hole is the through -hole, slides in the second locating hole and has installed the reference column, and the reference column below is connected with the elastic component, and the elastic component sets firmly on the carrier, be provided with on the base of vacuum and inhale the vacuum slot that hole and second locating hole match, wherein, when the carrier was not adsorbed by the vacuum base, the reference column stretched out first locating hole outward and puts the circuit board with the card, when the carrier was put on the base of vacuum, the vacuum slot adsorbed referen