Roller guiding and positioning mechanism

The utility model provides an idler wheel guiding and positioning mechanism which comprises an upper base and a lower base, the lower end face of the upper base is fixedly connected with a transverse guiding idler wheel assembly and a longitudinal guiding idler wheel assembly, and the transverse guiding idler wheel assembly and the longitudinal guiding idler wheel assembly are both provided with guiding rollers. The upper end face of the lower base is fixedly connected with a transverse guide roller positioning plate and a longitudinal guide roller positioning plate which are in one-to-one correspondence with the transverse guide roller assemblies and the longitudinal guide roller assemblies, and the transverse guide roller positioning plate and the longitudinal guide roller positioning plate are each provided with a guide groove. The guide rollers can move up and down along the guide grooves to limit the upper base and the lower base in the horizontal direction. When the upper base and the lower base are con