Chaifu Case packing robots

Case-packing robots are core equipment in end-of-line packaging automation. They consist of an industrial robotic arm, a vision system, an end-effector, a conveyor line, and a control system. These robots automatically pick up and arrange products from the production line, pack them into cardboard boxes or reusable containers, and replace manual labor in repetitive case-packing tasks. They can be integrated with box-opening, box-sealing, and palletizing equipment to form a complete packaging production line.

I. Main Components

Robot Chassis

Six-axis articulated robot: Highly versatile, capable of handling products of all sizes—large, medium, and small—and the most widely used

Delta parallel robot: High-speed, light-load design, suitable for rapid packing of food and small items

Collaborative robot: Requires no safety fencing; enables human-robot collaboration; suitable for flexible production lines with small to medium batch sizes

End-effectors (Grippers)

Vacuum Suction Cups: For paper boxes, packaging bags, and flat boxes; prevents product damage

Mechanical Grippers: For bottles, rigid boxes, and heavier workpieces

Flexible Soft Grippers: For easily deformable or fragile products; prevents pinching injuries

Vision System

2D/3D vision identifies product position and orientation; capable of grasping products even when randomly placed; supports mixed-size production lines.

Control System

PLC + robot controller; capable of storing multiple packing schemes; switching between products requires only a program call; integrates with the production line’s MES system.

II. Workflow

Sensing → Gripping → Arranging into Boxes → Output

The conveyor belt transports products and empty cartons to the packing station; the vision system detects product positions and empty spaces in the cartons;

The robotic arm drives the gripper to pick up the products;

Products are neatly placed into the carton according to preset arrangement rules, with controlled placement force to prevent crushing or bumping;

Once packing is complete, the carton is discharged and proceeds to the sealing process; it can be linked with a downstream palletizing robot.

Schematic Diagram of the Case-Packing System

III. Key Advantages

High Flexibility: By changing grippers and loading programs, the system can quickly adapt to a wide variety of products and box types, making it ideal for multi-product production. Compared to traditional mechanical case packers, the cost of retooling is significantly lower.

Stable Efficiency: Capable of 24-hour continuous operation with a consistent cycle time, unaffected by operator performance.

Reduced Waste: Precise positioning minimizes damage from drops or crushing, ensuring high packaging consistency.

Cost Savings and Safety: Replaces repetitive and physically demanding manual labor, reducing the risk of workplace injuries; particularly suitable for harsh working conditions such as dusty or humid environments.

Easy Integration: Seamlessly interfaces with case openers, case sealers, and palletizers to achieve a fully automated, unmanned packaging line.

IV. Application Industries

Food and Beverage: Bottled beverages, snacks, canned goods, and packaged noodles

Pharmaceuticals: Medicine boxes, medicine bottles, and case packing in cleanroom environments

Personal Care: Laundry detergent, skincare products, and personal care items

3C Electronics: Case packing of chargers and small appliance components

Grains, Oils, and Chemicals: Bagged materials, hardware components, etc.

V. Selection Criteria

Payload: Total weight of product plus gripper, with a safety margin;

Working Range: Confirm that the robot can reach all areas required for case packing;

Cycle Time: Must match the speed of the upstream production line;

Product Characteristics: Prioritize flexible grippers for fragile or soft products; vision systems are required for irregularly shaped incoming materials;

Workspace: Standard industrial robots require safety fencing; collaborative robots are an option for confined spaces.

Additional Distinction: Case-packing robots place products into boxes; palletizing robots stack packed boxes onto pallets; production lines often use both in conjunction.