Roller type adjustable multi-size positioning workbench

The utility model provides a roller type adjustable multi-size positioning workbench which comprises a feeding bed and a positioning device which are arranged on the two sides of a sawing machine respectively, the feeding bed comprises a supporting beam, a limiting device, a plurality of rollers and a plurality of first supporting assemblies, and the supporting beam is of a frame structure and located on one side of the sawing machine; the first supporting assemblies are arranged in parallel, the upper end of each first supporting assembly is fixedly connected to the lower end of the supporting beam, the rollers are arranged in parallel, the two ends of each roller are fixedly connected to the upper end of the supporting beam, a workpiece is perpendicular to the rollers, and the peripheries of the rollers are in contact connection with the periphery of the workpiece. A limiting device is installed at the upper end of the supporting beam. According to the roller type adjustable multi-size positioning workbench