Supporting and adsorbing jig for PCB

The invention discloses a supporting and adsorbing jig for a PCB, which comprises a rectangular base, and is characterized in that a plurality of ejector pins capable of penetrating the rectangular base are arranged on the rectangular base; a movable board is connected to the bottoms of the ejector pins; the bottom of the movable board is connected with the cylinder rod of a cylinder; three adsorbing nozzles are arranged on the movable board; through holes are formed in the rectangular base in corresponding positions; the adsorbing nozzles can penetrate the through holes; the lengths of the adsorbing nozzles are shorter than those of the ejector pins; the adsorb nozzles are connected with a vacuum generator through pipelines. The conventional supporting and adsorbing jig for the PCB only can arrange the PCB in one height position, and the vertical position of the PCB cannot be adjusted, so that the application range is greatly limited; when the PCB is supported by the conventional supporting and adsorbing jig, the PCB can move during a machining process, so that the machining precision of the PCB is greatly impacted. The supporting and adsorbing jig provided by the invention has the advantages that the problems of the conventional supporting and adsorbing jig are solved; the structure is simple; the supporting height can be adjusted; the right position of the PCB can be kept.