Steel cage automatic winding equipment: the core automation equipment for processing pile foundation steel bars
The automatic winding equipment for steel cages (mainly CNC steel cage rolling welding machine/winding machine) is a specialized automation equipment for processing steel cages in cast-in-place piles in bridge, high-speed rail, building and other engineering projects. It can achieve the integration of main reinforcement positioning, spiral winding of hoop reinforcement, and automatic welding/binding operations, completely replacing traditional manual binding, significantly improving production efficiency, processing accuracy and engineering quality. It is the core standard equipment of modern steel processing plants.

Core Definition and Working Principle
This type of equipment is based on PLC+servo/frequency conversion control, and completes winding through the coordinated action of “rotation+linear feed”:
Main reinforcement positioning: Manually assist in inserting the main reinforcement into the fixed rotating disc and the movable rotating disc template holes and fixing them, forming a cage skeleton.
Winding drive: The rubber roller/friction roller drives the skeleton to rotate, and the small car carrying the winding ribs travels at a constant speed along the track, completing spiral winding at a set distance.
Forming welding: synchronous welding during winding (such as CO ₂ protective welding) or uniform welding/binding after rapid winding, ultimately forming a high-precision circular steel cage.
Core control: The touch screen sets parameters such as diameter, longueur, and spacing between stirrups, which are automatically stored and executed by the system. It supports remote control (≤ 50m).
Equipment structure composition (modular design, easy to disassemble and transport)
Function Description of Module Core Components
The main frame is welded with a base, power rollers, and transmission system to support the cage and provide rotational power, suitable for different diameters and weights
The wire winding trolley is equipped with a wire reel, straightener, and walking mechanism for storing wire reels, straightening and feeding wires. It feeds at a constant speed according to the program, and the spacing is infinitely adjustable
Electronic control system PLC, touch screen, frequency converter, servo motor parameter programming, real-time monitoring, precise control of speed and feed rate
Auxiliary mechanism automatic feeding rack, support ring device, welding robot arm main reinforcement automatic feeding, anti deformation support, soudage automatique (optional)
The unloading device can open and close the material rack, and the hydraulic ejection mechanism can quickly unload finished products, suitable for long cage (≤ 24m) transport
Key technical parameters (reference for mainstream models, such as SGH22-12, RKGH series)
Typical Range of Parameter Items, Accuracy Index, Remarks
Suitable for cage diameter of Φ 600- Φ 2500mm, with a diameter error of ≤± 5mm, adjustable in full size, suitable for pile foundations, bridge piers, etc
Processing length 3-24m (customizable for longer) with a length error of ≤± 10mm for single or multiple joint production
Reinforcement specifications: Φ 5- Φ 14mm, spacing error: ≤± 3mm, spacing: 0-300mm, infinitely adjustable
Main reinforcement specification: Φ 12- Φ 40mm. Concentricity deviation: ≤± 2mm. The number of main reinforcements can be adjusted as needed
Production efficiency of 12m/section/20-30 sections/day (6-8 personnes) is 3-5 times higher than manual labor, replacing the manual workload of 10-15 personnes
The total power output is about 15-25kW, and the energy consumption is reduced by about 40% compared to traditional processes. Servo drive is more energy-efficient and precise
Core advantages (compared to traditional handicrafts)
Efficiency Doubling: Automated operations significantly reduce manual labor, significantly increase single shift production capacity, and shorten project timelines.
Controllable accuracy: The spacing between the stirrups is uniform (with an error of ≤± 3mm), the concentricity of the cage is high, and the diameter is consistent, which meets the requirements of the national standard and avoids quality hazards caused by manual errors.
Cost optimization: Reduce labor costs (single person operation), lower material loss (≤ 2%), lower maintenance costs, and high long-term ROI.
Stable Quality: Tight wrapping, minimal deformation, firm welding, improving pile foundation bearing capacity and structural safety.
User friendly: modular design, convenient transition; Parameter storage, quick changeover, and reduced dependence on worker skills.
Applicable scenarios and typical applications
Transportation infrastructure: Mass processing of steel cages for high-speed rail/highway bridges, cross sea bridges, and tunnel pile foundations.
Building construction: Construction of cast-in-place piles for high-rise buildings, basements, pipe galleries, etc.
Water conservancy engineering: production of steel cages for deep foundations such as dams, ports, and docks.
Prefabricated components: standardized steel cage production for PC factories and pipe pile factories.
Cas: A high-speed bridge project used SGH22-12 roller welding machine, with a 6-person team processing 22 sections of 12m long cages per day, saving 60% of labor compared to manual labor. The spacing error of the stirrups was controlled within ± 2mm, and the pass rate of the first acceptance was 100%.
Key points of operation and maintenance
Operating standards:
Run without load for 15 minutes before starting up, check the rollers, wiring, and welding system.
Trial process 1-2 pieces, confirm the size and spacing, and then mass produce.
Long cage processing requires auxiliary support to prevent sagging and deformation in the middle.
Maintenance and upkeep:
Clean the iron filings daily, check the lubrication of the rollers and walking tracks.
Check fasteners and welding joints weekly, and replace gearbox grease monthly.
The electrical system should be moisture-proof and dust-proof. If it is not used for a long time, the power should be cut off and covered for protection.
Selection and Development Trends
Selection suggestion: Select the machine type according to the cage diameter, longueur, and output of the project, and prioritize modular and expandable equipment with automatic welding function, suitable for multi scenario reuse.
Technological Trends:
Intelligent upgrade: Introducing visual inspection to monitor welding quality and dimensional deviations in real-time.
Integrated integration: linked with sawing, threading, and polishing lines to achieve unmanned steel processing throughout the entire process.
Green energy saving: servo system optimizes energy consumption, welding smoke purification improves environmental protection level.
This equipment promotes the processing of steel bars from “manual rough” to “CNC fine” through automation and precise control, providing dual guarantees for engineering quality and efficiency. Pour les entreprises de construction, investing in adaptive steel cage automatic winding equipment is a key measure to reduce costs, increase efficiency, and enhance core competitiveness.