Roller frame, also known as turnover frame and displacement frame, refers to the equipment that drives cylindrical (or conical, polygon) welds to rotate through the active roller rotation to complete the welding of welds in the ring weld, in which the rotation speed can be adjusted by adjusting the roller rotation speed of the roller frame, and the horizontal position of the inner and outer ring joints and inner and outer longitudinal joints of the workpiece can be welded by manual welding or automatic welding. It is widely used in shipbuilding, wind power generation rack production, and various circular tank manufacturing industries. FGI inverters have many years of proven experience in the roller frame industry. Next, we will demonstrate the advantages of FD200 series low voltage frequency inverters in the roller frame application.

1.Working Principle

The roller frame is composed of an active drive frame and a driven drive frame. The driving frame and the driven frame are composed of four rollers, which are made of inner iron core and outer rubber. The main transmission part is driven by the inverter motor rotation, the motor drives the reducer to drive the active roller, the use of the friction between the active roller and the cylinder type workpiece to drive the workpiece rotation to achieve displacement, in which the active and driven roller remain on the same axis, so that the workpiece is not easy to deform and slip when rotating.

2.System Configuration

According to the weight of the production workpiece, the user can choose 20 tons to 150 tons of negative weight roller frame. The roller frame of different tonnage is equipped with a FGI FD200 series low voltage frequency inverter of 1.5KW~15KW, and its operation mode can be divided into wired external handle operation box control and wireless remote operation box control. The frequency converter is controlled by the terminal, and connected by the more than 10 meters extension cable or wireless remote control. It can realize the functions of fast start and stop of positive and negative rotation, potentiometer speed regulation, real-time speed LCD display, fault alarm and reset on the operation box, which brings convenient, reliable and efficient control performance while realizing remote control for users.

3.FGI FD200 series low voltage frequency inverter application advantages

FGI FD200 series low voltage frequency inverter  is applied in the roller frame, the starting torque is large, can achieve fast response, the acceleration and deceleration process is smooth and accurate, effectively improve the working efficiency of the equipment, and ensure the reliable and stable operation of the system.

Using vector control mode, effectively improve the operation efficiency of the whole system, more energy saving and environmental protection.

The FD200 series low voltage frequency inverter has accurate lock signal output, which can smoothly release the lock during the fast forward and reverse rotation start and stop process.

Strong anti-interference ability, even in the environment of strong electromagnetic interference such as argon arc welding machine can be used normally, will not cause alarm interference and failure, no need to add input power filter.