Automatic Manipulator

Automatic Bag Depalletizer for powder and plastic granule

Automatic Bag Depalletizer is an all-in-one automation cell that takes a full pallet of raw materials and converts it into a controlled flow of bulk powder or granules.

It eliminates the entire manual process of lifting, cutting, and dumping bags, which is often the dirtiest and most physically demanding job in a factory.

The Core Workflow: From Pallet to Powder

Intelligent Picking

3D Vision Scanning: Since bags shift and deform during transit, a 3D camera scans the pallet to find the precise height and angle of the top bag.
Robotic Grip: A robot equipped with a needle gripper (for woven bags) or a vacuum head (for paper/plastic) picks the bag and moves it toward the emptying station.

Precision Cutting

The “Clean Cut”: The robot moves the bag over a set of high-speed rotating blades.
Minimizing Contamination: Advanced systems use a “U-cut” or “X-cut” on the bottom of the bag to ensure no plastic or paper shards fall into the material hopper.

Total Emptying (Discharge)

Vibratory Sifting: Once cut, the bag is held over a hopper and subjected to high-frequency vibration or a mechanical “shaker” to ensure 99.9% of the material is released.
Dust Containment: This entire process happens inside a negative-pressure enclosure with an integrated dust collector to prevent fine particles from escaping into the factory.
Phase 4: Waste Management
Empty Bag Compactor: The robot drops the empty, flat bag into a screw compactor or baler. This reduces the waste volume by up to 90% and keeps the workspace clean.

Why Choose an Integrated System?

Health & Environmental Safety

Manual bag dumping is a major source of occupational lung disease and back injuries. An integrated system keeps the operator behind a safety fence and keeps the dust inside the machine.

Cost Recovery (Low Residue)

In industries like pharmaceuticals or specialty chemicals, the raw material is expensive. If an operator leaves 100g of powder in every bag, it adds up to thousands of dollars in waste per month. A robot’s consistent vibration ensures every gram is used.

Space Efficiency

Instead of having a separate depalletizing area and a separate dumping station connected by long conveyors, the integrated unit performs both tasks in a single compact footprint.

Typical Applications

  • Battery Manufacturing: Handling toxic lithium or cobalt powders.
  • Food & Beverage: Emptying large volumes of sugar, flour, or spice bags into mixers.
  • Chemical Industry: Processing carbon black, pigments, or plastic resins.
  • Water Treatment: Automated dosing of lime or polymer bags.
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Company Work Process

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EASY TRANSFER
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ACCURATE CONTROL
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STRONG APPLICABILITY
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EASY TO OPERATE
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MULTI DIRECTIONAL OPERATION
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SAFE AND EFFICIENT
How It’s Work

SERVICE PROCESS

Free Program

Based on the product information, usage conditions, installation site environment, and layout provided by the customer, we provide customized solutions for free.

Site investigation

For complex on-site conditions or special workpieces, Tongli can provide on-site investigation and measurement services to make appropriate solutions.

Professional production

All accessories have passed factory testing and meet specifications, enabling continuous and unobstructed operation.

On site installation

Having a professional equipment installation team, with excellent skills and tools, we provide fast and reliable robotic arm installation services.

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Factory Info

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