The Overhead Corrugator Bridge is a vital section of the corrugated board production line, responsible for transferring single-faced corrugated web from the single facer to the double backer. It ensures stable web movement, maintains proper wave shape, and helps regulate paper tension and alignment. Designed for durability and precision, this unit supports medium to high-speed corrugator operations.

Structural Composition:

The overhead bridge system typically consists of the following main components:

Bridge Frame Structure: Heavy-duty steel structure supporting the entire unit, designed for stability and ease of maintenance access, often including walkways and safety railings.
Lifting Mechanism: Driven by an independent frequency-controlled motor, enabling smooth vertical adjustment of the bridge height for web path optimization.
PVC Conveyor Belt System:High-strength, wear-resistant PVC belt conveys the single-faced board while maintaining consistent wave shape and position.
Roller Assembly: All guiding rollers are precision-ground and chrome-plated, providing low-friction support and long service life.
Vacuum Tension Control System: Equipped with a 5-inch suction pipe and adjustable damper valve, enabling stepless airflow control to maintain web tension and minimize fluttering.
Web Alignment (Edge Control) System: Includes two motorized web guiding units, each with screw-driven positioning and dual-guide pillar design. This ensures fast, accurate edge correction and smooth web tracking.

Characteristics of the Overhead Corrugator Bridge：

Independent VFD lifting motor for flexible height adjustment.
PVC belt for stable and uniform single-faced web conveyance.
Chrome-plated rollers for enhanced durability.
Vacuum suction system for adjustable tension control.
Dual electric web alignment units for precise edge correction.
Modular design for easy integration into existing corrugator lines.

This overhead bridge plays a key role in maintaining production continuity, ensuring consistent board quality, and minimizing paper waste due to misalignment or web instability.

Technical parameter of the overhead corrugator bridge：

Item	Specification
Applicable Web Type	Single-faced corrugated board (flute A, B, C, E, F)
Max. Web Width	1800–2500 mm (customizable)
Conveying Method	High-strength PVC belt
Drive System	Independent frequency-controlled motor (VFD)
Tension Control	Vacuum suction tension control with 5-inch air pipe and stepless adjustable damper
Roller Surface	Precision ground and hard chrome-plated
Alignment System	2 sets of electric web guide units with double-guide pillars and screw drive positioning
Alignment Range	±75 mm (typical)
Max. Conveying Speed	150–250 m/min (depending on line configuration)
Bridge Structure Height	Typically 2.5–4 meters above ground (adjustable)
Safety Access	Walkway with anti-slip grating and handrails
Control Mode	Integrated with main corrugator PLC / touch screen optional
Installation Type	Floor-mounted steel frame with anchor bolts
Optional Features	Web break detection, splice detection, web storage loop