Positioning mechanism of core tube

The utility model relates to the technical field of cast iron production, in particular to a positioning mechanism of a core tube. The core tube positioning mechanism comprises a wire feeder body, an adjusting mechanism, a limiting and orienting mechanism and a base, a supporting seat is fixedly mounted at the bottom end of the wire feeder body, mounting pads are fixedly mounted at four corners of the top surface of the wire feeder body, lifting rings are fixedly mounted at the top ends of the four mounting pads, and the lifting rings are fixedly mounted at the top ends of the lifting rings. The adjusting mechanism is fixedly installed at one end of the wire feeder body, the limiting orientation mechanism is arranged above the adjusting mechanism, the limiting orientation mechanism is fixedly installed at one end of the wire feeder body, and the output end of the limiting orientation mechanism is in transmission fit with the adjusting mechanism. The positioning mechanism of the core tube is simple in structur