the idea came out in brain sroming session :
- suction cup to uplift the cement bag
- rubber cover for existing arm
- rope gantry crane
- roller convey arm
- tilting the arm
- Teflon coating on the existing arm
- change the existing arm
- change the stocking system
- lengthwise stocking
- wheel drive roller
- lifting multiple bag and tilting
- side conveyer like heat sealing machine
- put an arm under the bag and tilt.
- sliding the suction conveyor.
- self-rotating suction conveyer
- roller / soft tooth jaw
- the suction cup on sideways
- special arm/scissor mechanism / soft jaw
