Robotic Palletizing Workstation for Section Steel Rolling Line

Full Technical Solution

Precision, stability, and efficiency are the core competitiveness of modern steel rolling production lines. This article shares a complete robotic palletizing workstation dedicated to section steel, covering design logic, process flow, core configuration, applicable standards, scope of supply, and application value. It is an ideal reference for steel rolling, straightening, and fixed-length finishing lines.

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1. Equipment Overview

This robotic palletizing workstation is installed at the centralized collection station after straightening and fixed-length cutting of section steel, specially used for fast, orderly, and neat stacking of finished section steel.

With a high-payload 6-axis industrial robot as the core execution unit, the system is equipped with buffer conveyors, steel sorting mechanisms, palletizing stations, automatic strapping machines, and an integrated control system. It realizes fully automatic handling and palletizing of finished section steel from feeding, sorting, gripping, stacking, strapping to finished product output.

It greatly reduces labor intensity, minimizes risks in high-temperature and heavy-load working conditions, saves labor costs, and significantly improves the overall economic benefits of the production line.

2. Core Technical Parameters

• Applicable products: Finished section steel (angle steel, channel steel, profile steel, etc.)
• Product length: 6m / 12m
• Length deviation: ≤ ±5mm
• Bending deformation range: ≤5mm
• Material: Carbon steel
• Material temperature at picking station: ≤70℃
• Finished stack width: ≤500mm
• Application environment: Harsh industrial environment of steel rolling workshop (high temperature, dust, heavy load)
• Compatibility: Supports quick changeover for multiple specifications of section steel with multiple preset programs

3. Design Principles

• Modular mechanical design: Standardized modular structure for easy on-site assembly, daily maintenance, and rapid component replacement.
• High-stability operation design: Sturdy frame structure and redundant load capacity ensure long-term, stable, and efficient operation.
• Comprehensive safety design: Complete mechanical protection, electrical interlock, and emergency stop systems to ensure equipment, material, and personnel safety.
• High versatility design: One set of equipment compatible with multiple section steel specifications, reducing changeover time and improving production flexibility.

4. Working Process

1. Before production, adjust the special gripper and call the corresponding palletizing program according to the section steel specification.
2. After straightening, the section steel is conveyed to the receiving area, and the lifting chain transfers materials to the conveyor bed.
3. The conveyor system consists of three sections: buffer chain, counting chain, and output chain, balancing production rhythm and relieving peak palletizing pressure.
4. The counting chain runs at a higher speed to separate materials and complete grouping and accurate counting with auxiliary mechanisms.
5. After counting, materials are sent to the robot picking position and positioned by sorting auxiliary mechanisms.
6. The robot automatically grips and stacks materials at the palletizing station, with alignment and lifting mechanisms for shaping.
7. Finished stacks are conveyed to the strapping station for automatic steel wire strapping.
8. Strapped finished products are transferred to the output area for warehousing, and the whole process runs in cycles.

5. Core Components & Performance

5.1 6-Axis Heavy-Duty Palletizing Robot

• 6-axis articulated industrial robot
• Rated payload: 500KG
• Repeat positioning accuracy: ±0.2mm
• Maximum working radius: 2525mm
• Protection class: IP67, adaptable to harsh workshop environments
• Flexible movement, easy installation and low maintenance cost

5.2 Customized Special Gripper

• Patented structure with strong versatility and high adaptability
• Working mode: Electromagnetic
• Applicable workpiece temperature: ≤80℃
• Stable clamping without damaging materials or collapsing stacks
• Low failure rate for long-term continuous operation

5.3 Conveying & Sorting System

• Palletizing input roller conveyor (variable frequency drive)
• Lifting chain bed (pneumatic lifting)
• Buffer input chain for temporary material storage
• Steel sorting chain (speed difference for material separation)
• Steel sorting & counting unit (servo + pneumatic drive)
• Sorting auxiliary mechanism for equal spacing and end alignment

5.4 Palletizing Station Roller Conveyor

• Stable stacking platform with side alignment and lifting mechanisms
• Reduces waiting time and greatly improves palletizing efficiency
• Smooth conveying without stack collapse or deformation

5.5 Automatic Strapping Machine

• Strapping material: Special steel wire
• Single strapping cycle: ≤19S
• Bundle weight: approx. 2–5T
• Control modes: Remote auto, local auto, local manual
• Core control: High-performance PLC for stable operation

5.6 Integrated Control System

• Main controller: High-performance mainstream PLC
• HMI: 10-inch touch screen for intuitive operation
• Functions: Product selection, recipe call, production statistics, fault monitoring
• International brand low-voltage components for stability and expandability
• Supports signal docking with upstream and downstream equipment for full-line linkage

6. Scope of Supply & Interface Division

Scope of Supply

• Complete palletizing and conveying machinery (rollers, chains, sorting mechanisms, alignment mechanisms, etc.)
• Heavy-duty 6-axis palletizing robot and customized gripper
• Automatic strapping system
• Complete electrical control system, HMI, sensors, and pneumatic components
• Full set of technical documents: layout drawings, foundation drawings, operation manuals, certificates, inspection reports

Interface Division Between Buyer and Seller

• Sensors: Supplier provides sensors and proximity switches; Buyer completes wiring.
• Compressed air: Supplier provides pneumatic units and solenoid valves; Buyer provides air source and pipelines.
• Equipment foundation: Buyer undertakes construction; Supplier provides drawings and specifications.
• Power supply: Buyer provides three-phase five-wire power and connects the ground wire to the control cabinet.
• Foundation fasteners (anchor bolts, anchor plates, etc.) are prepared by the Buyer.

7. Applicable Standards

The complete set of equipment is designed, manufactured, inspected, and accepted in strict accordance with relevant national and industrial standards, including:

• Geometric tolerances and surface roughness standards
• Heavy machinery general specifications (inspection, welding, casting, forging, assembly, coating, packaging)
• Electrical equipment safety design guidelines
• Mechanical and electrical installation & acceptance codes
• Steel structure and crane design standards

8. Application Value

• Realizes fully automatic unmanned palletizing in the steel finishing area
• Improves stacking accuracy and finished product appearance quality
• Stable capacity for 24-hour continuous production
• Reduces labor costs, management costs, and safety risks
• Strong compatibility for quick specification changeover
• High stability and easy maintenance, with outstanding long-term benefits

This solution is widely used in the automation upgrade of various section steel rolling lines, helping steel enterprises move efficiently toward intelligent manufacturing.