Plastic packaging bag slitting and shaping device

The utility model relates to the technical field of plastic packaging bags, and discloses a plastic packaging bag slitting and shaping device which comprises a support, a left roller is fixedly connected to the left side of the support, and a left brush is fixedly connected to the left side of the support. The utility model discloses a slitting and shaping device for plastic packaging bags. The compression roller is elastically supported by the spring barrel to compress the plastic packaging bag; the plastic packaging bag is tightened when being cut by the cutting knife; compression cutting, cutting effect is good, difficult-to-cut inclined part, dust generated by cutting is absorbed by the fan; the fan cover surrounds the transmission roller in a wrapping manner; dust catching effect is good, the cut plastic bag is turned downwards; part of dust is brought to the inner bottom wall of the fan cover through earth gravity, the dust is well controlled, the bottom of the plastic bag is shaped and brushed through