Application of FGI FD300 series low voltage frequency inverter in plate rolling machine

1.overview

Plate rolling machine is a device that uses work rolls to bend and form plates. It can form various shapes such as cylindrical parts, conical parts, etc. It is a very important processing equipment.Its working principle is to use hydraulic, mechanical and other external forces to drive the work roller to move, and bend or bend the sheet material.

By changing the rotation and position of the working rolls of various shapes, the machining of various types of workpieces such as ellipse, arc and cylinder can be realized.

According to different applications, the type of plate rolling machine is not the same. According to the number of rolls divided into three rolls, four rolls.Three rollers are divided into symmetrical three-roll coiling machine, horizontal down-adjusting three-stick coiling machine, arc down-adjusting coiling machine, upper roller universal three-roll coiling machine, hydraulic numerical control coiling machine, etc.

FGI inverter has been well used in the winding machine industry, especially the three-roll winding machine. Now the FGIFD300 series frequency converter is applied in the three-roll winding machine.

2.equipment introduction

The three-roll winding machine mainly includes an upper roller and two lower rollers, the upper roller is set in the center of the two lower rollers, and the hydraulic oil in the hydraulic cylinder carries on the vertical lifting of the piston, the two lower rollers are driven by the main motor, and the final gear of the reducer drives the two lower rollers to rotate, providing torque for the winding plate.

The flat metal sheet is transmitted to one side of the three work rollers of the winder by the feeder, under the lower pressure of the upper roller and the rotation of the lower roller, the metal sheet is continuously bent for several times (the inner layer is compressed, the middle layer remains unchanged, and the external tension is tightened), to achieve permanent plastic deformation, and then rolled into the required cylinder, cone or part of it.

A set of guide rollers is added under the lower roller to reduce the distance between the upper and lower rollers, improve the accuracy of the take-up parts and the overall performance of the whole machine.

3. system configuration

In the control system of the plate rolling machine, the man-machine interface + PLC+FD300 frequency inverter is used to drive part of the lower roll, the lower roll translation, and the hydraulic oil pump. In the idler station, each FD300 frequency inverter (equipped with brake unit and brake resistance) performs vector control of the idler station, and together with the external mechanical brake, it can achieve fast and accurate start and stop.

Users only need to set the required product parameters on the touch screen, and they can operate the equipment through the operating platform or wireless remote control device.

4.Application advantage

The driving parts of the device are all controlled by FD300 high performance frequency inverter, which ensures the synchronous and stable work of the whole system, makes the operation of the system more convenient, reduces the maintenance cost, and extends the service life of the machine.

FD300 series frequency inverter adopts advanced vector control algorithm, at low speed, can carry out large torque output, which makes the whole system start and stop are very smooth and accurate, can make the system fast response, thereby improving the efficiency of the equipment.

FD300 frequency inverter has perfect protection measures such as overcurrent protection, overvoltage protection, undervoltage protection and overload protection, which ensures the safe and reliable work of the whole system.