Xiamen Gachn International Co., Ltd. presents a practical integration guide for plants that already run a bagging line and are now adding an automatic truck loading machine. Most projects are approved on the loader's rated speed alone, but the number that actually sets daily shipment is the fit between three things: the outlet of the packing line, the loading head inside the truck, and the dispatch bay outside the gate. This guide works through that fit with reference figures from Gachn's intelligent automatic bagged cement palletizing and loading machine — 95–120 t/h, bag breakage below 0.1%, a 40–60 cm drop height and a 3D compartment scan completed in under 50 seconds — and shows where a plant gains or loses throughput after the machine is installed.
The loading machine moves a 40-ton truck in 20–25 minutes. That figure is achieved when the truck is in position and bags are available at the infeed. In practice three interfaces decide the result: the transfer from the packing line outlet to the loader infeed, the loading head inside the compartment, and the truck movement between the bay, the weighbridge and the gate. A loader rated at 110 t/h cannot deliver 110 t/h if any of the three stalls.
Plants that measure only the machine's rated speed usually discover the real constraint in the first peak week, when trucks queue outside while the packing line waits for a free bay.
A loading machine does not need to match the packing line one to one, and it should not. It needs enough headroom to clear a truck quickly and to catch up after a line stoppage.
A practical rule is that loader capacity should be at least 1.2 times the peak hourly output of the line it serves. The worked check is simple: take peak daily shipment, divide by usable loading hours, and compare with the machine's range.
2,000 t/day over 16 usable hours requires 125 t/h on average.
One automatic bagged cement palletizing and loading machine at 95–120 t/h covers 1,520–1,920 t in those 16 hours.
Above that tonnage, the choice is a second bay or a longer loading window, not a bigger single machine.
That comparison is the reason a plant shipping 1,200 t/day and a plant shipping 2,200 t/day often buy the same model but operate different bay counts.
The buffer between the packing line and the loader is the most frequently underestimated item. It does not need to hold a whole truck. It needs to hold the output produced while one truck leaves and the next is positioned.
Truck interchange — departure, approach, positioning, 3D scan and head entry — typically takes 5–8 minutes. On an 80 t/h line that is 6.7–10.7 tons, which equals 267–427 bags at 25 kg or 133–213 bags at 50 kg. A buffer sized around ten tons of line output therefore covers a normal interchange without stopping the packers.
Undersizing the buffer transfers the stoppage to the packing line. Oversizing it adds capital cost and increases the time bags spend under load. The buffer should also run first-in-first-out, so that bags do not sit in one lane while older bags are loaded from another.
Loading time is only part of the cycle. Positioning, the compartment scan, sealing and the exit through the weighbridge all consume bay time or gate time:
Loading: 20–25 minutes for 40 tons at 95–120 t/h.
Positioning and scan: under a minute for the scan itself, plus driver approach.
Sealing and documentation: plant-dependent.
Weighbridge: three minutes per truck is 2.5 hours per day across 50 trucks.
At 110 t/h a single bay clears 2.4–2.75 forty-ton trucks per hour. Fifty trucks a day, the equivalent of 2,000 tons, therefore needs about 21 hours of bay time. That is why a two-bay layout, or a dispatch window longer than one shift, is the normal answer at that volume.
A buffer only works if bags arrive undamaged and square. The in-cargo design places the loading head inside the compartment and drops bags from 40–60 cm, which is what keeps breakage below 0.1% instead of the 1–2% typical of manual loading. Placement accuracy is held within ±5 mm, and the system selects from more than 100 stacking patterns for horizontal, vertical and mixed arrangement.
Bag range covers 25–50 kg filled weight and 300–1,200 mm bag length, in both valve sacks and open-mouth bags. On the vehicle side, the 3D radar scan models the compartment in under 50 seconds and reads length, width and side-wall height, so high-sided trucks, flatbeds, containers and customized agricultural vehicles can share one bay without a fixed fleet standard.
The machine is a fully enclosed dust-proof structure with integrated pulse dust collection, holding ambient dust below 0.5 mg/m³. Core electrical components including the Schneider PLC and Panasonic sensors support continuous 7×24 operation from −20 °C to 60 °C, with an MTBF above 8,000 hours.
Three layout items are settled at the drawing stage: a hardened, level approach lane long enough for the longest vehicle in the fleet; power and compressed air positions; and the control cabinet location. A 360° laser safety system stops the machine within 0.3 seconds of detecting personnel intrusion, and 12 safety interlocks cover overload, unbalanced load, emergency stop and fault self-diagnosis.
Peak daily tonnage and usable loading hours per day
Peak hourly output of each packing line feeding the bay
Truck interchange time measured at the gate, not estimated
Buffer length and accumulation capacity available between line and loader
Bag dimensions, filled weight, valve sack or open-mouth
Longest, highest and most unusual vehicle in the fleet
Weighbridge capacity and gate documentation time
Number of bays, shifts and annual operating days
Turnkey plant layout design and export customs guidance
On-site installation and commissioning within 30 days of arrival
Multilingual illustrated manuals; operators productive after 1–2 days of training
Spare parts warehouses in India, Indonesia, Saudi Arabia and Nigeria
12-month full-machine warranty, 3-year free control system software upgrade, 24-hour technical response
A loading machine is only as fast as the interface around it. Plants that size the machine against peak hourly line output, build a buffer for the truck interchange rather than for a whole truck, and count the full cycle including the weighbridge, reach the rated 95–120 t/h in daily operation instead of only on the specification sheet. With more than 300 installations and a 98% customer satisfaction record, Gachn's automatic bagged cement palletizing and loading machine manufacturer team supports that integration from layout drawing to the first loaded truck.
Do I need a second loading machine if my packing line already runs at 120 t/h?
Not automatically. Compare peak daily tonnage with usable loading hours. One machine covers 1,520–1,920 tons across 16 usable hours; a second bay is justified when peak tonnage exceeds that or when the dispatch window is shorter than the shift.
How large should the buffer between the packing line and the loader be?
Size it for the truck interchange, normally 5–8 minutes of line output. On an 80 t/h line that is 6.7–10.7 tons, or 267–427 bags of 25 kg.
How long does a 40-ton truck take to load?
Loading itself takes 20–25 minutes at 95–120 t/h. Positioning, the under-50-second compartment scan, sealing and the weighbridge are additional and should be counted in the bay cycle.
Can the machine handle trucks it has never loaded before?
Yes. The 3D radar system builds a compartment model in under 50 seconds and adapts the stacking strategy to the measured geometry, covering high-sided trucks, flatbeds, containers and customized agricultural vehicles.
What happens to bags if a truck arrives late?
The loader pauses and the packing line continues into the accumulation section, so bags stay in the buffer rather than on the floor. Loading resumes when the vehicle is in position.
Is the AI adaptive loading module required?
No. The base machine performs unattended loading; the AI module is an optional upgrade configured to the plant's quality-control requirements.
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