i designed total 3 working mechanisms and have prepared the sketch too.
1st design is fully powered by gravity, no use of electricity. only we need to put the empty bag by hand,machine fills up the given weight in bag and then filled up bag is taken out by hand.
2nd design is semi automatic. we need to place empty bags in between bag holders on bag delivery line, machine fills up desired weight of grain, sews the filled bag and then bag reaches the extraction point through conveyor belt.
3rd design is fully automatic. it picks up the empty bags from stack, fills it ,sews it and delivers to extraction point with conveyor belt.
i can produce the detailed sketch of 1st design. while 2nd and 3rd design are little complex so i would better produce its CATIA design.