Model 1224 High-Speed ​​Leading-Edge Water-Based Printing Rotary Die-Cutter

Functional Configuration and Technical Specifications

Lead Edge Vacuum Feeding Section

This machine features an advanced pressure-free vacuum lead edge feeding system. Paperboard is directly delivered through a front-edge vacuum suction belt, eliminating the need for guide rollers and pinch pressure. The power is transmitted from the main power shaft through timing belts to ensure synchronization of the front-edge feed. The design maintains accurate sheet alignment and stability while ensuring smooth feeding performance.

By using a split-torque transmission structure, both the upper and lower vacuum belts operate with adjustable speed, allowing precise and smooth feeding. This setup minimizes the risk of paper damage, improves operation efficiency, and simplifies adjustments.

A high-efficiency airflow-assisted feed system operates with a 7.5 kW air blower, adjusting air volume according to paper curvature to ensure even and reliable sheet transfer. Equipped with front-position pushers driven by pneumatic cylinders, the system ensures quick, stable feeding and precise positioning even for lightweight cardboard or thin corrugated sheets.

The independent leading-edge feeding system allows finer speed synchronization and reduces friction damage. The unique design removes conventional mechanical rollers, providing a smoother transfer channel. Compared to traditional friction-type feeders, this system improves speed, reduces scratching, and enhances overall feeding reliability.

Overall, this pressure-free vacuum feeding design offers greater automation, less manual adjustment, and reduced maintenance, effectively solving alignment challenges during continuous high-speed production.

---

Control System and Platform

1. Electronic alarm system for machine separation (audible warning ensures operator safety).
2. Pneumatic interlock safety device.
3. Main drive motor and blower use frequency inverter for energy saving, smooth startup, and overload protection.

---

Front-Edge Feeding System

1. Air-assisted feeding using a 7.5 kW blower; adjustable airflow provides stable paper feeding.
2. Pneumatic push feed increases efficiency and reliability.
3. Adjustable baffle board height; front baffle synchronized manually, rear electrically adjusted.
4. Extended feeding auxiliary supports improve precision.
5. Conveyor equipped with wear-resistant belts for durability.
6. Optional continuous chain-feed mode based on production needs.
7. Counting system with display for sheet count, batch number, and positional setting.

---

Dust Removal & Discharge Systems

1. Brush and suction dust removal system eliminates debris and dust on the board surface, enhancing print quality.
2. Pneumatic jogging device ensures accurate positioning and alignment of cardboard, reducing waste.
3. Frequency motor-driven system provides 30% energy savings.
4. Touchscreen-based control for all operations.
5. Automatic zero-return system for accurate color registration.

---

Printing Unit (Available in 1–4 Color Options)

Printing Cylinder:

1. Diameter 395 mm (with plate 410 mm).
2. Chromium-plated steel surface, polished and hardened.
3. Dynamic balancing for smooth, stable rotation.
4. Quick-lock plate shaft for 9 mm thick plates.
5. Pneumatic printing plate lift controlled automatically by a foot switch.

Paper Transfer Rollers:

1. Upper roller diameter φ 99 mm (thick steel tube).
2. Lower roller diameter φ 156 mm (polished steel).
3. Feed clearance adjustable 0–12 mm via motorized control.

Anilox Rollers (4 sets):

1. Diameter φ 215 mm (options: 180–260 mm).
2. Surface engraved and polished.
3. Dynamic balancing ensures even ink transfer.
4. High-precision ceramic coating guarantees uniform ink and easy cleaning.
5. Manual fine-tuning of engraving depth.

Rubber Roller (4 sets):

1. Diameter φ 200 mm.
2. Special wear-resistant printing rubber coating.
3. Polished rubber ensures ink uniformity.
4. Hardness 60–65 shore A.

Phase Adjustment Mechanism:

1. Planetary gear structure, 360° phase adjustment (available in motion or stopped).
2. Precise lateral adjustment ± 10 mm.

Ink Circulation System:

1. Pneumatic diaphragm pump for stable and easy ink supply.
2. Ink filtration screen improves ink quality.

Printing Register Locking:

1. Pneumatic interlock maintains gear alignment.
2. During unit separation, the mechanism preserves original registration accuracy.

Oil Supply System:

1. Mechanical oil pump with continuous circulation flow.
2. Equal oil level maintained across all gear sets.

---

Die-Cutting Section

Lower Die-Cutting Cylinder:

1. Diameter φ 360 mm (excluding die).
2. Chromium-plated alloy steel surface.
3. Dynamic balancing for stable running.
4. Mounting hole 50 × 50 mm.
5. Suitable die height 25.4 mm.
6. Die thickness 16 mm (for 3‑ply) / 13–15 mm (for 5‑ply).

Upper Rubber Cylinder:

1. Diameter φ 388.9 mm.
2. Same alloy steel construction.
3. Motorized clearance adjustment between die and cushion.
4. Rubber pad thickness 10 mm (outer diameter φ 408.9 mm, width 250 mm).

Repair and Resurfacing Device:

1. Mechanical and automatic grinding mechanism with 40 mm stroke — extends cushion life by evenly compensating wear.
2. Electrical polishing function enables 3–4 reuse cycles.
3. Pneumatic separation lowers friction, prolonging rubber life.

Quick Die Exchange & Locking:

1. Quick-change design eliminates the need for size-specific die templates.
2. Die height and cutting system adjustments done via a single‑button control for convenience.

---

Transmission System

1. Made of 40Cr alloy steel, quenched, ground, and hardened.
2. Gears HRC 55–60, treated for minimal noise and wear, ensuring long color registration precision.
3. All shafts and connections adopt clamp-style keyless couplings for high‑speed transmission stability.

---

Technical Specifications