LY3500 Industrial-Grade High-Capacity Reinforced Multi-Station Two-Piece Folder Gluer Production Line

Description

Large-format, heavy-duty cartons need equipment that can keep pace without sacrificing precision. The LY-3500 multi-station two-piece semi-automatic folder gluer machine delivers that balance, combining automated feeding, gluing, and splicing with a multi-operator finishing setup built for high-volume output.

Engineered for large-scale, structurally demanding cartons, this heavy-duty machine combines a reinforced 6-ton frame with an 11000 × 4500 × 1600 mm footprint, supporting substrates up to 1750 × 1700 mm, with a minimum feeding size of 350 × 200 mm and a maximum paper stack height of 450 mm. Powered by a 3 kW main motor and a total system power of 12.5 kW, the LY-3500 delivers a stable foundation for high-speed operation by integrating automated splicing with multi-operator workflow efficiency.

Multi-Station Teamwork for Multiplied Output

Unlike traditional single-station machines operated by one person, the LY-3500 adopts a multi-station discharge system that enables multiple operators to work simultaneously at the finishing end. While the machine completes high-speed feeding, alignment, and gluing automatically, folding and squaring are distributed across several workers positioned along the discharge line. This parallel workflow ensures manual output matches machine speed, eliminating the downstream bottlenecks that typically limit single-operator folder gluers.

Semi-Automatic Advantage: Manual Folding and Squaring

The design intentionally removes rigid, fully automatic folding and squaring units, replacing them with flexible manual stations that enhance overall adaptability. The machine handles servo feeding, hot/cold hybrid gluing, and precise splicing automatically. Once blanks are merged and discharged, operators complete folding and squaring by hand, allowing fine adjustments that automated tooling often cannot accommodate.

This semi-automatic structure is particularly well suited for irregular cartons, extra-thick boards, and heavy corrugated materials — box types that fully automatic systems often struggle to process reliably. By keeping the finishing stage in human hands, the LY-3500 maintains consistent quality even as carton specifications change from one production run to the next.

Core Workflow & Technical Highlights

Feeder Section — Large-Format Dual Feeding: The LY-3500 supports a maximum stack height of 450 mm across a size range from 1750 × 1700 mm down to 350 × 200 mm. Independent servo-driven dual feeding systems, combined with vortex suction control, ensure stable, jam-free operation while reducing board surface damage — an important factor when handling large, delicate, or heavily printed sheets.

Gluing Section — Cold & Hot Hybrid Bonding: An automated roller system applies cold glue and hot melt adhesive simultaneously, ensuring both instant tack for immediate handling and long-term bonding strength for finished cartons. Dual glue cylinders paired with secondary micro-alignment work together to eliminate millisecond-level positioning errors before splicing, keeping joints clean and accurate.

Splicing Section — Servo Merging & Compression: Four 50 mm belt lines driven by dual servo motors, combined with photoelectric sensors, ensure precise seam alignment on every cycle. Steel pressing balls with protective covers enhance bonding strength, prevent delamination at the joint, and reduce operational noise during continuous production.

Strategic Operational Advantages

Parallel Multi-Operator Efficiency: The discharge layout supports multiple operators working in parallel, significantly increasing effective throughput compared to single-operator systems. This makes the LY-3500 especially valuable for manufacturers managing large order volumes or tight delivery schedules.

Heavy-Duty Structural Integrity: The reinforced frame and motor system are engineered for stable high-speed operation, sustained accuracy, and reduced mechanical wear over time. This structural rigidity supports long-term reliability even under continuous, heavy-load production conditions.

High Versatility & Low Waste: Manual folding improves adaptability for complex or oversized carton shapes, while precise photoelectric tracking throughout the feeding and splicing stages reduces misalignment and scrap rate. Together, these features improve material efficiency and support stronger production profitability.

Applications

The LY-3500 is well suited for manufacturers producing large-format two-piece cartons, heavy-duty corrugated packaging, and structurally complex box designs that require both automated precision and hands-on finishing control. It performs especially well in production environments where board thickness, carton shape, or order specifications vary frequently, and where a fully automated line would be too rigid or too costly to justify.

The LY-3500 offers a strategic balance between automation and manual control — delivering the speed and bonding precision of automated feeding, gluing, and splicing, combined with the adaptability of manual finishing for large and irregular carton formats.