New Generation Digital Tobacco Processing Equipment

SQ3B Series
Horizontal Rotary Tobacco Cutter

The ideal model for technical transformation and equipment renewal in cigarette factories. Featuring high-performance PLC & S120 Servo Controllers.
Adaptable to production lines from 500kg/h to 6400kg/h, achieving full digital precise control of cut width.

Digital Control
S120 Servo
Wedge Compaction
Cylindrical Grinding
SQ31B - SQ38B Full Series High/Medium/Low Capacity Models
SQ31B - SQ38B Full Series High/Medium/Low Capacity Models

Core Technology & Features

Precision mechanical structure based on digital control technology ensures continuous and uniform material processing.

Digital Control of Cut Width

With the cutter drum motor as the master and the chain motor as the slave, the PLC performs high-speed calculations via preset formulas to precisely regulate the speed ratio. The system automatically tracks operation within the specified cut width settings without requiring mechanical adjustments.

S120 Servo Drive System

Adopting advanced bus technology, the servo controller collects resolver signals and feeds them back to the PLC, achieving extremely high-precision closed-loop speed control to ensure the stability of cutting accuracy.

⌀600mm Precision Cutter Drum

Configured with a 600mm diameter cutting cylinder installing 8 (or 4) blades. Features continuous quantitative feeding functionality; knife feed frequency can be freely set (not fixed), feeding approximately 0.03mm per step, with real-time blade life monitoring via the touchscreen.

Pneumatic Control System

Controls the lifting of the mouthpiece and drives the upper chain mechanism to compact the material. Pneumatic components are available in SMC or FESTO options. It also provides precise control for mouthpiece cylinders, oscillating cylinders, and pneumatic clutches (leaf cutters), etc.

Cylindrical Grinding Device

Uses a rack-and-pinion reciprocating mechanism to improve blade grinding quality. It reduces blade and grinding wheel wear and ensures linear contact between the grinding wheel surface and the knife edge, enhancing sharpness and flatness. Wheel dressing ensures a constant cutting circumference, guaranteeing uniform cut width.

HMI Industrial Computer

Suspended control box equipped with a large-screen touch industrial PC. Provides six main screens including Operation, Parameter Setting, Maintenance, Alarm, and Trend Charts, supporting fault self-diagnosis and real-time data display.

Technical Specifications

Available in 8 configurations from low to high capacity (SQ31B - SQ38B)

Parameters SQ31B/32B (Low) SQ33B/34B (Med) SQ35B/36B (High) SQ37B/38B (Ultra)
Applicable Material Lamina / Stem Lamina / Stem Lamina / Stem Lamina / Stem
Rated Capacity (kg/h) 1600 / 500 2400 / 750 4000 / 1250 6400 / 1600
Cut Width (mm) 0.5~1.5 / 0.1~0.5 0.5~1.5 / 0.1~0.5 0.5~1.5 / 0.1~0.5 0.5~1.5 / 0.1~0.5
Mouthpiece Width (mm) 410
Mouthpiece Height (mm) 60-135
Drum Speed (r/min) 200-650
Total Power (kw) 30.3 / 28.67

* Note: Odd-numbered models are Leaf Cutters (Vertical Feed), and even-numbered models are Stem Cutters (Horizontal Feed). The SQ37B is mainly used for 6400kg/h lamina lines, and the SQ38B for 1600kg/h stem lines.

Mechanical Structure & Principles

SQ31B - SQ38B Main Drive & Chain System
Main Drive & Chain System

01 Main Drive & Chain Mechanism

The chain reduction motor drives the upper and lower chains to rotate synchronously in the same direction via sprockets. The upper chain assembly adopts a parallelogram linkage mechanism, using cylinders to compact the material.

  • Synchronous Conveying: Material is transported and squeezed by the upper and lower chains within the wedge-shaped channel, gradually compressing loose material into a structured "tobacco cake."
  • Constant Gap: The trajectory of the upper chain matches the arc of the cutter drum's circumference, ensuring a constant gap between the upper mouthpiece and the cutting circle, stabilizing cutting quality.
  • Fast Reverse: By reversing the chain motor, synchronized fast reversing of the upper and lower chains is achieved, facilitating easy material clearing.
SQ31B - SQ38B Cutter Drum & Feed Mechanism
Cutter Drum & Feed Mechanism

02 Cutter Drum & Feed System

The core cutting component, supporting both curved blade (stem cutting) and straight blade (lamina cutting) configurations. Solid cutter drum fully machined for extremely high debugging precision.

  • Differential Feed: Enclosed differential gear train feed drive unit; simple, reliable structure, and resistant to wear.
  • Cylindrical Grinding: Ensures linear contact between the grinding wheel surface and the knife edge, improving sharpness and flatness.
  • Safety Protection: Features automatic detection and stop functions for worn-out blades or grinding wheels, and automatic power cut-off when the head cover is opened.