How Fully Auto Packaging Machine Works & Compatible Bottle Types

At Dongguan Xinzheng Machinery, our fully auto packaging machine completes automatic bottle grouping, bagging and bundling instead of manual operation, greatly reducing labor cost for plastic bottle manufacturers.

• Working Principle of Fully Auto Packaging Machine

Empty bottles coming from the upstream conveyor flow into the packaging machine station continuously. The whole process runs automatically with PLC and servo control.

1. Bottle grouping & counting

Bottles are conveyed into the grouping area. Sensors count bottles and arrange them into preset groups according to required quantity per bag, such as 12 pcs, 24 pcs or 36 pcs.

2. Bag feeding preparation

The machine automatically feeds plastic packaging bags to the bag-opening station. The bag mouth is opened by mechanical suction cups and kept ready for bottle loading.

3. Pushing bottles into bag

The grouped bottles are pushed forward by the push-bottle cylinder into the pre-opened bag. Position-limit sensors ensure bottles are fully seated inside the bag.

4. Bag closing & discharging

After bottles are in place, the bag opening is closed. The finished bagged bundle is discharged onto the outgoing conveyor and delivered to the downstream bag stacker or palletizer.

The machine reserves IO handshake signals. When the packaging station is full or a fault occurs, it sends a pause signal to upstream equipment to avoid bottle accumulation on the conveyor.

• Compatible Bottle Types

Our fully auto packaging machine supports multiple bottle materials and shapes for blow-molding industries.

1. Material

• PE bottles: HDPE / LDPE extrusion-blown bottles, jerrycans, chemical containers, oil bottles.

• PET bottles: Mineral-water bottles, beverage bottles, cosmetic empty containers.

• IBM injection-blown bottles: Small-size pharmaceutical bottles, cosmetic bottles.

2. Bottle shape

Round bottles are the most-common compatible type. Custom modification is available for slightly oval bottles.

Special-shaped bottles require customized guiding and grouping accessories.

3. Bottle dimension range

• Bottle height: 50 mm‑450 mm

The above figures are standard range. Customized structure can be adjusted for oversized or mini bottles.

• Practical Notes for Line Integration

1. The actual running capacity of the fully auto packaging machine shall be 10-20 % higher than the output of the upstream blow-molding host, reserving production buffer.

2. Match the incoming-conveyor height with the blow-molding machine outlet height.

3. For hot bottles directly from EBM blow-molding machine, slow-down adjustment is needed to prevent bottle deformation by extrusion.