Embossing device for packaging bag production

The invention relates to the technical field of packaging bag production, in particular to a packaging bag production embossing device which comprises a rack, a shell and a tensioning roller. The front side face and the rear side face of the rack are each fixedly connected with a shell. A plurality of tensioning rollers are rotationally connected to the inner side of the rack; the device further comprises conveying rollers, a first motor and the like. The upper left portion and the upper right portion of the rack are each rotationally connected with a conveying roller. A first motor is arranged on the front portion of each conveying roller, and an output shaft of each first motor is fixedly connected with the corresponding conveying roller. According to the knurling device for packaging bag production obtained through the design, the knurling roller made of a metal material is heated through heat conduction oil continuously flowing in the hollow disc and the hollow pipe, compared with electric heating, the ph