Waste plastic bottle sorting system and sorting method thereof

Abstract

The invention relates to a waste plastic bottle sorting system comprising a detecting unit, a system control unit, a mechanical sorting unit and a conveying unit. The conveying unit sequentially feedswaste plastic bottles into the detecting unit and the mechanical sorting unit, and the system control unit is respectively connected with the detecting unit, the mechanical sorting unit and the conveying unit; the detecting unit comprises a visual detecting module, a material detecting module and a light source; and the visual detecting module performs information collection on color information,shape information and position information of the waste plastic bottles on the conveying unit based on a camera imaging principle. The waste plastic bottle sorting system has the advantage that visual color analysis and infrared material analysis are effectively combined, the information of the plastic bottles is accurately and quickly processed and transported to the mechanical sorting unit, andthe mechanical sorting unit can accurately conduct sorting operation on the plastic bottles on the conveying unit.

Description

technical field [0001] The invention relates to the technical field of waste product recycling, in particular to a waste product plastic bottle sorting system and a sorting method thereof. Background technique [0002] With the development of industry, the application of plastic products has spread all over the fields of industry, agriculture and daily life. The waste plastic waste generated every day in the world cannot be estimated, but it is obvious that it has a great pressure on the environment. In order to deal with these plastics Garbage, the current method is generally landfill, incineration and so on. However, due to the long natural degradation time of ordinary plastic waste, which generally takes a hundred years to degrade, and a large amount of methane and other harmful substances will be produced during the degradation process, the landfill method has been criticized by many experts; while the incineration method produces Harmful gases, smoke, etc. directly aff...

AI Technical Summary

Problems solved by technology

The current equipment has basically realized the fully automatic production operation mode, but the detection and sorting part has not yet reached a high processing efficiency. At present, in the original bottle sorting part, through photoelectric detection and compressed air blowing, some colored bottles are processed. Blowing out, but because the start-up method cannot achieve accurate blowing out, the sorting accuracy rate is less than 80%, and transparent bottles will be brought out, so some manual sorting and picking of bottles is required in the later stage; after the primary selection of the original bottle, manual After picking the bottles, the remaining bottles on the production line are all colorless and transparent bottles. At this time, the bottles need to be sorted out according to the different material properties, so as to facilitate the later sorting and recycling. The current operation method is that the original bottle is broken and cleaned. , through the material screening machine, the non-PET material is blown out by a pneumatic nozzle in the material screening machine. In the same way, before being used to enter the material sorting machine, the bottle has been broken to a size of only 1cm. During the process, the misselection rate is as high as 1:8. Therefore, in order to ensure high-purity bottle flakes, it is often necessary to add two material sorting machines, resulting in very high production and processing costs.

[0005] In addition, such as a plastic bottle sorting method disclosed in patent document CN106964563, it uses an image recognition system to identify materials, mainly through industrial cameras and industrial computers for image recognition, and after recognition, divides the sorting area through baffles, but Different materials may fall at the same time, and the baffles cannot effectively sort and screen, which leads to the low sorting efficiency of the sorting system and cannot meet the requirements of the enterprise

[0006] In addition, as disclosed in the patent document CN 108582580 A, the near-infrared technology-based plastic online sorting device and its sorting method only use infrared material analysis, and cannot quickly and accurately collect other data and feed it back to the manipulator for sorting.

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