Two Colour Rotogravure Machine

Two Colour Rotogravure Machine

The two colour rotogravure machine is an efficient model developed specifically for short-run orders and production environments with limited space. While maintaining the exceptional precision of rotogravure technology, its compact integrated design significantly enhances operational flexibility and setup efficiency.

This compact gravure printer is compatible with various substrates including PET, BOPP, PE, CPP, and cellophane. Its core value lies in achieving ±0.10mm longitudinal accuracy through an automatic color tracking system, combined with a closed-loop oven optimized for high-quality, eco-friendly printing.

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Key Parameters
Max. Mechanical Speed 60 m/min
Printing Speed 10–60 m/min
(Actual speed depends on substrate characteristics, plate diameter, ink properties, and operator skill)
Register Precision Longitudinal comprehensive precision of ±0.10 mm (via automatic color tracking system);
Horizontal precision of ±0.20 mm (manual adjustment)
Plate Cylinder Diameter Φ100 mm – Φ300 mm
Max. Plate Cylinder Width 650 mm
Guide Roller Specifications Diameter Φ60 mm, length 630 mm
Internal Machine Width 880 mm
Main Drive Inverter Motor 2.2 kW
Total Power 12 kW
Machine Structure High-quality frame-style cast iron construction
Machine Weight Approx. 2 tons
Dimensions (L×W×H) 2000 × 2100 × 2200 mm
Machine Color Optional
Oven Type Specialized oven for water-based inks
Drying Method Electric heating
Doctor Blade Oscillation ±5 mm
Substrates and Printing Specifications
  • Printing Colors: 2 colors
  • Max. Printing Width: 600 mm
  • Substrate Compatibility:
    1. Cellophane: 15–30 um
    2. PET: 12–60 um
    3. BOPP: 12–60 um
    4. CPP: 15–60 um
    5. PE: 20–80 um
Features
  • Shaftless Plate Mounting: This two colour rotogravure machine discards traditional manual shafts in favor of a pneumatic cylinder-driven shaftless mounting system. This ensures high concentricity and allows for rapid, single-person plate changes.
  • High-Precision Color Tracking: Driven by vector frequency motors and a 360-degree automatic tracking system, the 2 color film printing machine maintains longitudinal errors within ±0.10mm, even during speed transitions.
  • Industrial-Grade Drying & Inking: Each unit is equipped with an independent closed constant-temperature oven and centrifugal fans for instant ink drying. The pneumatic doctor blade with automatic horizontal oscillation ensures uniform ink distribution and extends plate life.
  • Heavy-Duty Stable Structure: The shaftless gravure press features a 60mm thick high-quality cast iron frame with a total weight of approximately 2 tons. This robust build effectively absorbs vibration to maintain precise alignment during high-load operations.
Component Breakdown
Machine Frame
  • Structure: Modular assembly using high-quality cast iron. Frame wallboards feature a width of 400 mm, height of 1600 mm, and thickness of 60 mm. Material protection rollers provide high precision with oxidized surfaces and an outer diameter balance of <5g. Adjustable left/right positioning with aluminum rollers (Φ60mm × 630 mm) installed at corners.
  • Specifications: Transition rollers Φ60mm × 630 mm.
  • Bearings: Harbin bearings used in the gearbox.
Drive System
  • Structure: Utilizes vector inverters to control vector motors. A synchronous wheel on the motor shaft drives the transmission shaft, which in turn drives each gearbox to the printing plate. Flexible connections are used at all gearbox joints.
  • Specifications: Includes one 4 kW main vector frequency motor and one 4 kW vector inverter.
  • Bearings: Harbin bearings used for the gearbox.
Printing Section
  • Shaftless Plate Mounting
    1. Structure: Features a shaftless mounting format to ensure uniform initial positioning of the plate cylinders. Pneumatic cylinders pull the plate cylinder shaft while lateral manual adjustment is handled via screw movement.
    2. Specifications: One Φ80mm × 250 mm cylinder per group. Supports plate widths from 200 mm to 650 mm and plate diameters from 100 mm to 280 mm. Uses Harbin bearings.
  • Impression Unit
    1. Structure: Uses a swing-arm type double cylinder system.
    2. Specifications: Nitrile rubber (NBR) impression rollers measuring Φ120 mm × 600 mm with a Shore hardness of 75°–80°.
  • Doctor Blade Unit
    1. Structure: Features a dual-axis adjustable doctor blade that allows for free adjustment of height and angle. Blade pressure is controlled via a double pneumatic system, and lateral movement is driven by a motor via worm gear rotation.
    2. Features: Extends the lifespan of the plate pattern and ensures uniform ink scraping with a lateral oscillation of ±5 mm.
  • Inking System
    1. Structure: Ink trays can be manually raised or lowered based on the size of the printing plate.
  • Drying System
    1. Structure: Built-in closed oven utilizing centrifugal fans for air blowing and suction to create hot air. Includes intake air pre-heating. Electric heating tubes are distributed at the air outlet of each oven, with temperature regulated by intelligent controllers.
    2. Specifications: One 1.1 kW centrifugal fan per group; six 1 kW electric heating tubes per group; one intelligent temperature controller per group. Total power per drying system group is 6 kW.