Three-section dynamic weighing leading-in device

The utility model relates to a three-section dynamic weighing and leading-in device, and provides a three-section weighing and leading-in unit comprising a coding section assembly, a dynamic weighing assembly and an uploading section assembly, so as to dynamically complete weighing and information acquisition before automatic conveying and reaching a sorting machine loop line. Therefore, the follow-up piece feeding accuracy and sorting efficiency are improved in a targeted mode, and pieces are supplied to the maximum degree so that the loop line operation efficiency of the sorting machine can be guaranteed. The three-section dynamic weighing leading-in device comprises a coding section assembly, a dynamic weighing assembly and an uploading section assembly which are connected in the conveying direction. Wherein the bottoms of the coding section assembly, the dynamic weighing assembly and the uploading section assembly are provided and connected with the profile frame assembly; a size measuring device assembly