TONGLI yellow assisted lifting manipulator in a manufacturing workshop

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At TONGLI, we design and manufacture handling manipulators, palletizing robots and automation equipment for factories, warehouses and production lines. Tailored to your load, materials and workspace, our solutions help reduce manual effort, improve handling efficiency and support dependable daily operation.

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Suction Cup Pneumatic Manipulator for Cardboard Boxes

Overview

The Suction Cup Pneumatic Manipulator is a “handling marvel” in modern warehousing and automated production lines. It uses the principle of vacuum negative pressure to grip cartons, and with the help of a pneumatic balancing system, it makes cartons weighing tens of kilograms feel like a feather in the operator’s hands.

Core Working Principle

This manipulator arm mainly consists of two parts: a pneumatic balancing hanger and a vacuum gripping fixture.

Vacuum Grip: Negative pressure is generated by a vacuum generator or fan, causing the suction cups to firmly adhere to the surface of the cardboard box.

Pneumatic Balancing: Employing “zero-gravity” balancing technology, the system automatically senses the load weight and compensates for gravity with air pressure, keeping the cardboard box in a suspended state.

Key Product Features

1. Protects Outer Boxes, Damage-Free Handling
Compared to traditional gripping robots, suction cup handling avoids squeezing the sides of cartons. This is crucial for products containing fragile items or requiring high-quality packaging (such as home appliances and high-end food).

2. “Zero-Gravity” Operation Experience
Operators only need to apply a few kilograms of force to easily lift, lower, or rotate heavy objects. The system has a self-balancing function; the load will remain at its current height after release, preventing it from falling.

3. Diverse Suction Cup Configurations

  • Single Suction Cup: Suitable for small, lightweight, square cartons.
  • Multi-head Suction Cup: Suitable for large cartons or cartons with loose seals or uneven surfaces, providing stronger gripping stability.
  • Sponge Suction Cup: Offers better sealing for corrugated cartons with rough surfaces or leaks.

4. High Safety

  • Air Supply Interruption Protection: In the event of a sudden air supply interruption, the one-way valve maintains the vacuum level within the suction cup and, in conjunction with a mechanical limit switch, prevents the cardboard box from falling instantly.
  • Low Pressure Alarm: A visual or audible warning will be issued when the air pressure is insufficient.

Application Scenarios

Palletizing and Depalletizing: Stacking cartons at the end of the production line.

Loading Logistics: Cargo handling in express sorting centers.

Production Line Feeding: Moving raw material cartons to the carton erector.

Technical parameters

Performance indicatorsCommon Range
Rated Load10kg – 150kg (higher loads available upon customization)
Working Radius2000mm – 4000mm
Lifting Height1500mm – 2500mm
Power Source0.5 – 0.7 MPa clean compressed air
Rotation AngleArm 360°, Grab 90°/180° Tilting

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TONGLI Automation Solutions

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From ergonomic lifting and vacuum handling to palletizing, machine tending and fully automated production lines, TONGLI provides reliable automation equipment for factories, warehouses and production environments.

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Professional Handling Manipulators & Palletizing Robots By TONGLI