In recent years, with the continuous development of science and technology and the continuous improvement of industrialization, industrial control systems have gradually put forward higher requirements for automation control. From the previous electrified control systems to the current automation, intelligence, and remote control systems, control requirements have gradually increased. As an important process equipment for printing and packaging machinery, the slitting machine occupies a very important position in the entire production process. At the same time, the slitting machine plays a crucial role in the quality of printing machine products and slitting control.

  

01 Introduction to slitting machine

A slitting machine is a mechanical equipment that cuts wide paper, mica tape, or thin film into multiple narrow materials. It is commonly used in papermaking machinery, wire and cable mica tape, and printing and packaging machinery. The slitting machine is mainly used for cutting non-woven fabrics, mica tapes, paper, insulation materials, and various thin film materials, especially suitable for cutting narrow bands (non-woven fabrics, paper, insulation materials, mica tapes, thin films, etc.).

 

 

02 Working structure of slitting machine

● Unwind

Pneumatic or magnetic powder unwinding shaft, providing a certain braking torque for unwinding materials;

● main engine

Adopting FVC control mode to pull and drive the unwinded materials;

● Knife cutting

Cut the material transmitted through the cutting tool installed on the slitting machine;

 

● A/B winding

Using FVC control mode, roll up the sliced thin film products;

● Slitting machine control system

The perfect combination of PLC linkage control and frequency converter achieves constant linear speed (constant tension) operation of the entire equipment;

The system receives the encoder speed pulse signal collected by the frequency converter, and realizes the calculation of meter, coil, line speed, and constant line speed of the host/winding machine.

 

 

03 Technical requirements for variable frequency control of slitting machines

 

● Ensure constant tension, synchronized speed, and fast response of materials in each section

● The start and stop should be stable without impact, the winding material should not wrinkle, and the edges should be neat

● System linkage, precise speed control, constant linear speed, and uniform material collection

 

● Strong compatibility with equipment technology, with the ability to switch speed/torque freely

04 Advantages of Cumark ES series product slitting machine application

● High speed stability and accuracy

Excellent closed-loop vector control (FVC) performance with high speed stability accuracy;

 

● Quick response

Fast torque response (<5MS), significantly reducing tension change time (the winding shaft can respond quickly after a given torque);

● High accuracy and coherence

High torque linearity (repeatability accuracy of 1%) ensures the accuracy and continuity of equipment curling;

 

● Adapt to harsh environments such as high temperature and dust

High protection level and independent air duct design better adapt to harsh environments such as high temperature and dust on site;

● Debugging and maintenance are fast and simple

Standard Chinese and English LCD smart keyboard, user-friendly human-machine interface, quick and easy debugging and maintenance.

 

 

-Dongguan slitting machine application site-

 

-Application site of Jiangyin slitting machine-

 

 

CUMARK - The Most Valuable Industrial Automation Integration Product and Solution Customization Expert

Q：What is the on-site application effect of the Cumark ES series high-performance low-voltage frequency converter?

A：Before using our products, there were issues such as poor control effect of the slitting machine, rough control technology, and low accuracy. Therefore, Cumark proposed a design of an automatic control system for slitting machines based on PLC technology.

    Practice has proven that the Cumark ES series automatic control system and solutions designed for the problems encountered in the application of slitting machines have high accuracy, fast response, excellent control performance and effectiveness, and have achieved stable operation of the slitting machine automatic control system, which has good industry application value.