Customer Case: ESTUN 4-Axis Depalletizing Machine, Robotic Arm Debagging Equipment for 35KG Bagged Plastic Pellets

Posted on by spinrobotech

We customized an ESTUN 4-axis depalletizing and debagging machine with a silo for a client. The client needs to open plastic pellet packaging bags on their production line. The existing product packaging and line information are as follows:

Product name: Plastic pellets

Packaging form: PP bags

Specification: 35 kg per bag

Bag dimensions: 550×400×200 mm

Pallet dimensions: 1200×1000 mm

Stacking pattern: 5 pieces per layer, 6 layers in total

Total depalletizing height: 1300 mm

Based on the above basic information and the required production line feeding speed, we recommended and customized the ER-180 robotic depalletizing and debagging machine for the client, equipped with a custom gripper and a silo. The machine parameters are as follows:

Arm span 2400mm
Repeat positioning accuracy +0.04mm
Maximum load 120kg
Installation method Ground
Degree of protection IP54
Number of axles 4 AXIS
RANGE OF MOTION 1 AXIS  +180°
2 AXIS  -40°~+85°
3 AXIS  -20°~+110°
4 AXIS  +360°
MAXIMUM SPEED 1 AXIS  105°/s
2 AXIS  110°/s
3 AXIS  110°/s
4 AXIS  290°/s
Power supply/Power AC 380V±/5%  three-phase four-wire
Pneumatic Requirements Grippers/Fixtures: 0.8 MPa, 0.3 m³/min

Total air reservoir capacity >600 L
Dimensions Overall height 3m, rotation coverage radius 2.8m, footprint 6×6 m²
Efficiency 115 bags/hour

4-Axis Robotic Arm, Custom ESTUN Articulated Axis Robotic Arm Depalletizing Bag Emptying Machine, High-speed Debagging Machine Equipped with Specialized End-of-Arm Tooling (EOAT) and Material Silo, can be CE Certificated. ESTUN 4-Axis Robotic Arm, Equipped with Specialized End-of-Arm Tooling (EOAT). Articulated Axis Robotic Arm Depalletizing Bag Emptying Machine with Customized Gripper for Bagged Products, High-speed Debagging Machine Equipped with Material Silo, can be CE Certificated.

The 4-axis depalletizing machine has passed acceptance inspection.

We Spin supply three mainstream palletizing robots: cartesian coordinate robots, column-type palletizer, and articulated robotic arms. For detailed information on the three palletizing machine types, click here: Automated Palletizing Solutions: A Complete Guide to Cartesian, Column-Type, and Articulated Robots

Articulated Robotic Arm: The Flexible and Intelligent Solution

Professional Design:
Mimicking the human arm, it is a multi‑joint, multi‑degree‑of‑freedom serial robot. Mainstream configurations include 4 axes (base rotation, upper arm swing, forearm swing, wrist rotation) and 6 axes (adding wrist pitch and yaw to the 4‑axis design). Some models specifically optimized for palletizing adopt a 5‑axis high‑rigidity design to simplify the structure and improve stability.

Motion Trajectory:
The working envelope is spherical, and the trajectory is extremely flexible and diverse. Through complex kinematics and trajectory planning algorithms (e.g., inverse kinematics solution), it can achieve arbitrary curved paths in space and adjust the end‑effector’s orientation. Modern systems also integrate AI vision for dynamic path planning.

Applicable and Common Scenarios:
Offering the highest flexibility, it is the first choice for handling multiple varieties and variable batch sizes of materials. It is especially suitable for industries such as e‑commerce logistics, home appliances, 3C electronics, and automotive parts. It can easily accomplish complex tasks like “mixed‑SKU depalletizing/palletizing” and, when equipped with collaborative systems, enables human‑robot collaboration.

SPIN – Professional Palletizing & Depalletizing Robots Solution Provider

We provide one-stop service from selection and planning to after-sales support. Contact me for a customized solution based on your materials and site!