Spline shaft suction nozzle module and mounting head

The invention provides a spline shaft suction nozzle module and a mounting head, and belongs to the field of chip mounters, and the spline shaft suction nozzle module comprises a top Z-axis switching assembly, a sliding spline module and a quick-change suction nozzle module; the suction nozzle branch ventilation module sleeves the lower part of the sliding spline module; the top Z-axis adapter assembly is connected with an externally connected Z-axis driving mechanism above the top Z-axis adapter assembly; a synchronous gear is further arranged on the sliding spline module and is in driving connection with an external rotary driving mechanism; the mounting head comprises a Z-axis driving module, a side edge rotation driving module, a head fixing base, a Z-axis fixing bottom plate and a plurality of spline shaft suction nozzle modules. According to the spline shaft suction nozzle module, the circumferential rotation precision can be guaranteed, stable deviation correction of the suction nozzle is achieved, the