Quantitative packing device for powder ampoule packing machine

The utility model relates to a quantitative distributing device for a screw rod powder injection distributing machine suitable for quantitative distributing medicaments, belonging to the field of a pharmaceutical machinery. In order to adapt the clinical need to the dosage of an injection, the existing straight cylinder shape screw rod is changed into a cone shape screw rod. The utility model comprises a power device, a driving suspender shaft 1, a powder box cover 3, a powder bucket 4, a powder mouth 5, a powder bucket bracket 6 and a bracketfixing link 7. The utility model has the technical proposal that the upper part of the cone shape screw rod 2 for connecting the driving suspender shaft 1 is of a cylinder shape, and the lower part is of a cone shape; the conicity of an inner wall at the lower part of the powder bucket 4 is in anastomosis with the conicity of a screw tooth superincumbent arranged on the cone shape screw rod 2. The utility model has the advantages of accurate distributing quantity and convenient operation.