Structural Composition

1. Bag clamping cylinder: Drives opening closing of clamping swing arms, solenoid valve controlled; working air pressure 0.5 0.7 MPa. Magnetic switch fitted to feed clamp open / clamp closed feedback signals to PLC for interlock protection logic.

2. Clamping swing arms: Lever hinge construction; cylinder actuation drives swing arms for opening / clamping motion.

3. Rubber clamping pads: Mounted on inner side of swing arms, providing cushioning and anti slip function. Protects bag mouths and seals gaps to stop starch dust blow out during filling; rubber pads are consumable wear parts.

4. Discharge nozzle: Reference seating position for bag mounting; material flows into packaging bags through this spout.

5. Mounting bracket: Secures full bag clamping assembly onto scale frame.

6. Detecting photoelectric sensor: Verifies correct bag fitting; disables feeding when no bag is present to avoid powder spray out and material loss.

Working Principle

After manual bag fitting is completed, photoelectric sensor confirms bag in place status. PLC outputs signal to extend bag clamping cylinder, pulling two swing arms inward. Rubber pads press bag mouth tightly against outer surface of discharge nozzle. The equipment then executes fast  & slow feed weighing filling cycles. Once metering finishes, cylinder retracts, swing arms open and release bag mouth. Finished bag falls onto conveyor belt and proceeds to bag sewing station for next operation.

Main Functions

1. Firmly holds packaging bags to prevent bag mouth detachment during filling.

2. Seals bag mouth gaps to suppress modified starch dust fugitive emission and improve workshop working environment.

3. Cooperates with photoelectric detection to realise no bag no feed logic and prevent material blow out loss.

4. Auto releases bags upon filling completion to enable smooth automatic process hand over for packaging workflows.