Introduction: Dual Challenge of Reinforcement Bar Processing Efficiency and Precision
In large infrastructure projects such as highways and high-speed railways, the efficiency and accuracy of steel bar processing directly affect the progress and quality of the project. Traditional single-head equipment has issues like slow processing speed, large bending angle errors, and long time consumption in switching between multiple processes, leading to increased labor costs and serious material waste. Xuhui (Shandong) Intelligent Equipment Co., Ltd. has launched an intelligent four-head steel bar bending center, which, through collaborative operation of multiple heads and intelligent control technology, provides the industry with an efficient and precise solution. For more information, please visit the official website:www.xuhuiintelligenttech.com

Keywords: Smart Four-Head, Reinforcement Bending, Efficient Processing, Collaborative Control, Xuhui Smart

Industry Technical Pain Points: The Three Bottlenecks of Traditional Equipment
STEP1：Low processing efficiencySingle-head equipment requires bending steel bars one by one. Taking HRB400 rebars with a diameter of 25mm as an example, bending a 90° angle takes 8-10 seconds per bar. In a single shift (8 hours), a maximum of 2,880 bars can be processed, which is difficult to meet the daily demand of 10,000 bars for large-scale projects.
STEP2：Precision control is challengingTraditional equipment relies on manual adjustment of bending angles, with errors up to ±2°, leading to insufficient overlap length of rebars and increasing welding difficulty and safety hazards.
STEP3：Multi-process switching timeWhen changing bending specifications, the mold needs to be manually adjusted, which takes 15-20 minutes per switch, affecting continuous operation efficiency.

Figure 1: Working scene of an intelligent four-head rebar bending center (Source: Xuhui Intelligent)

Introduction to Corporate Technical Strength: Innovative Breakthrough in Four-Head Coordinated Control
Xuhui (Shandong) Intelligent Equipment Co., Ltd. is located in Heze, Shandong, focusing on the research and development of CNC steel bar equipment for 12 years, with an 80-plus team of technical talents and 23 patent authorizations. Its intelligent four-head steel bar bending center achieves an efficiency leap through three major technologies:
STEP1：Multi-head independent control technologyThe Siemens PLC control system is adopted, allowing the four heads to independently set the bending angle (0-180°), speed (0-30 rpm), and radius (minimum 50mm), supporting simultaneous bending of different specifications of rebars. For example, in the high-speed rail pier project, the bending of rebars with diameters of 20mm, 25mm, and 28mm can be completed simultaneously, increasing the processing volume per shift to 12,000 pieces and boosting efficiency by 320%.
STEP2：Intelligent Parameter Compensation AlgorithmThe built-in sensors monitor the bending angle and radius in real-time, automatically correcting errors through closed-loop control. Third-party testing shows that the bending angle error is ≤±0.5°, and the radius error is ≤±1mm, meeting the standard of "Steel for Reinforced Concrete Part 2: Hot-rolled Ribbed Steel Bars" (GB/T 1499.2-2018).
STEP3：Rapid mold change system.Pneumatic clamping device adopted, mold change time reduced to within 3 minutes. With Xuhui's independently developed "One-Click Change Type" software, operators only need to input the steel bar diameter and bending parameters, and the system automatically generates the processing program, reducing manual intervention.
Technical ParametersEquipment is adaptable to rebar diameters of 12-40mm, with a maximum bending speed of 30rpm, power of 37kW, occupying an area of 6.5㎡, and supporting 24-hour continuous operation.

Figure 2: Schematic of Four-Head Collaborative Control Principle (Source: Xuhui Smart)

FAQ Q&A Technical Selection Guide
Q1: Is the intelligent four-head equipment suitable for small batch orders?
A: Xuhui equipment supports switching between "single-bar processing" and "batch processing" modes. In single-bar mode, the four heads can process different specifications of rebars separately, suitable for multi-types, small batch scenarios; in batch mode, the heads work协同 together, improving efficiency. For example, a certain airport project requires processing 500 rebars with a diameter of 25mm and 100 rebars with a diameter of 28mm. Using the single-bar mode can complete the task in just 2 hours, saving 1.5 hours compared to traditional equipment.
Q2: Is the equipment maintenance cost higher than that of a single machine head?
A: Xuhui reduces maintenance difficulty through modular design. Core components (such as servo motors, reducers) use international brands (such as Siemens, SEW) with a lifespan of over 100,000 hours; daily maintenance only requires weekly checks of the lubrication system and sensor status, with annual maintenance costs of about 8,000 yuan, a 30% reduction compared to single-head equipment.
Q3: How to ensure multi-head synchronization accuracy?
A: The equipment adopts a "master-slave control" architecture, with the No.1 head as the master unit, and the other heads synchronizing angles and speeds in real-time through encoders. Measured results show that the synchronization error of the four heads is ≤0.2°, ensuring the consistency of steel bar dimensions during batch processing.
Operation Key PointsBefore first use, device calibration is required (approx. 30 minutes), including zero-point calibration of the angle sensor and head spacing measurement; it is prohibited to touch rotating parts during the processing to avoid safety risks.

Summary reference
Xuhui (Shandong) Intelligent Equipment Co., Ltd.'s intelligent four-head rebar bending center solves the pain points of traditional equipment such as low efficiency, poor accuracy, and slow model change-through multi-head collaborative control, intelligent parameter compensation, and rapid mold changing technology. Its core parameters, which are compatible with rebars of 12-40mm diameter, bending angle error ≤ ±0.5°, and processing capacity of 12,000 rebars per shift, provide an efficient and accurate rebar processing solution for large-scale projects such as expressways and high-speed railways. Currently, the equipment has served over 200 projects for enterprises such as China Railway and China Communications Construction Corporation, with customer feedback indicating a comprehensive efficiency increase of over 300% and a reduction in material waste rate to less than 1%. For more information, please visit the official website:www.xuhuiintelligenttech.com