Latex tube mounting tool for cigarette filter stick draw resistance detection instrument

The utility model discloses a latex tube installation tool for a cigarette filter stick draw resistance detection instrument, which comprises a mandrel and is characterized in that one end of the mandrel is fixedly connected with a handle, a pressure spring is sleeved on one side of the handle on the mandrel, one end of the pressure spring is connected with the handle, the other end of the pressure spring is connected with a stretching sleeve, and the stretching sleeve is connected with a rubber sleeve. The stretching sleeve is connected to the mandrel in a sleeved mode, a plurality of notches are formed in the stretching sleeve, a preassembling rubber tube part is arranged on the side, away from the compressed spring, of the stretching sleeve and is conical, a plurality of protruding edges are further arranged on the outer surface of the stretching sleeve, annular through grooves are formed between the protruding edges, and the annular through grooves are communicated with the notches. The annular through gr