Laminating Machine Solutions

Overview

The laminating machine is an important equipment in the packaging and printing industry. The so-called laminating refers to the lamination of two or more materials through a certain process to form a new integrated material. The composited material keeps the original The advantages of materials, on the other hand, can make up for each other's shortcomings.

Generally, the unwinding part of the compound machine adopts a magnetic powder clutch and a tension controller for tension control. The magnetic powder clutch relies on the binding force of the magnetic particles and the friction between the magnetic particles and the working surface to transmit torque. During high-speed operation, the magnetic powder rubs at high speed, generating high temperatures, causing the magnetic powder clutch to heat up and shorten its life. At the same time, the magnetic powder acts as an abrasive and produces fine powder that leaks through the rotor seal to bearings or other gaps, polluting the process. With the development of electronic technology, the control accuracy of the frequency converter is getting higher and higher. The frequency converter can already replace the magnetic powder clutch in many occasions to achieve precise control of the tension.

Application requirements

Take a machine manufacturer in Dongguan as an example. The unwinding material of the equipment is thin paper with a thickness of 0.08mm and a width of 900 to 1200mm.

Unwinding speed is stable

The unwinding speed is 20 ～ 200m / min, which can start and stop smoothly.

Tension is balanced and adjustable

According to the set tension, keep the minimum fluctuation range to ensure the tightness of the paper unwinding. At the same time, the set tension can be easily adjusted according to the width of the material and the maximum curling diameter.

Unwinding roller torque direction can be switched

When the glue surface on the paper is different, it needs to be turned over and the torque direction must be changed.

Megmeet Industry Solutions

1、Overview of MV600T inverter

MV600T is a special tension control frequency converter developed by Megmeet Drive Technology Co., Ltd. It can automatically control the output torque or automatically adjust the speed of the controlled traction machine, so that the tension on the belt (wire) material is kept constant, suitable for papermaking , Paper processing, printing and dyeing, packaging, wire and cable, adhesive tape, textile, leather, metal foil processing, fiber, rubber and other industries. For the control of winding and unwinding, the inverter's internal winding diameter calculation module can automatically calculate the change in the diameter of the reel, making the tension control more accurate. Using the MV600T inverter can completely replace the torque motor, DC motor, tension controller, etc. to form a tension control system independently. Compared with the traditional tension controller plus inverter control scheme, using this inverter can make the system more concise and reduce costs , Easy to maintain and obtain more stable control effect.

2、System solutions

The Megmeet MV600T special tensioner for unwinding inverters has a power of 11kw. Use open loop tension and torque control mode, passive unwinding, and add encoder to do closed loop vector control to ensure the stability of torque. The production speed is given by the original system main drive inverter Siemens G120. The following figure is the schematic diagram of the system configuration.

3、Transformation effect

Megmeet MV600T is a tension-type special frequency converter, which has a good control accuracy of tension. The tension control effect is good at the line speed of 200m / min of the customer's compound machine production line, which replaces the customer's original Mitsubishi magnetic powder clutch plus Mitsubishi. The solution of the tension controller saves the cost for the customer and solves the problem of severe heating of the magnetic powder clutch when the line speed is high.