The positioning mesh production line is specialized equipment that integrates multiple processes-including steel bar straightening, fixed-length cutting, precise material arrangement, resistance welding, and finished product collection-through collaborative automated operation. It is mainly used to manufacture steel bar positioning mesh sheets required for construction, transportation, and other projects.
This structural component is formed by vertically crossing longitudinal and transverse steel bars and connecting them through resistance welding. It is a key material for ensuring uniform force distribution in concrete components and preventing cracking.
Its core value lies in completely replacing the traditional manual binding and decentralized processing methods, addressing problems such as loose weld points, large spacing deviations, and low efficiency in manual mesh fabrication, while greatly improving the qualification rate of mesh processing.
Key Structural Composition
Pre-Treatment Unit:
Composed of multiple coil material racks and precision straightening and cutting mechanisms, this unit can simultaneously handle coiled or straight bars with diameters ranging from Φ4 to Φ16 mm. Driven by servo motors, it achieves straightening and fixed-length cutting with a length accuracy of ±2 mm, providing standardized raw materials for subsequent material arrangement.
Core Processing Unit:
It adopts an integrated design combining "automatic material arrangement + resistance welding." The material arrangement system, controlled by a PLC, precisely positions longitudinal and transverse reinforcing bars at preset intervals, with a positioning error of no more than 1 mm. The welding system is equipped with multi-head resistance welding torches and utilizes medium-frequency inverter technology for instant welding. The welding current is adjustable from 1000 to 5000 A, ensuring that the shear strength of each weld point exceeds 85% of the yield strength of the reinforcing bar.
Post-Processing and Conveying Unit:
This includes a mesh straightening device, an automatic cutting and separation mechanism, and a segmented conveying roller track. Some production lines are also equipped with a hook-forming module, capable of processing 90°–135° hooks at the mesh edges. The finished product conveying system supports the classification and stacking of multi-specification mesh sheets, and combined with the automatic counting function, enables batch discharge.
Intelligent Control System:
Integrating an industrial-grade PLC and an MES production execution system, it provides visual parameter programming via a touch screen and can store more than 200 mesh specification parameters.
Core Technological Advantages
Ultra-High Precision Forming:
Through mechanical positioning and closed-loop welding control, the spacing error of steel bars in the mesh is ≤ ±3 mm, and the diagonal deviation is ≤ 5 mm per 10 m-far superior to the ±20 mm error typical of manual binding-and fully compliant with the standard requirements for cold-rolled ribbed steel bar welded mesh.
Wide Adaptability to Multiple Scenarios:
The production line can process various types of steel bars, including cold-rolled ribbed and hot-rolled smooth round bars. Mesh thickness ranges from 3–16 mm, and sizes can be adjusted from 1 m × 2 m up to 32 m × 10 m. It supports the production of unidirectional and bidirectional mesh sheets, meeting the requirements of diverse fields such as construction, bridges, and tunnels.