A metal straightener machine, also known as a leveler, is a type of equipment used to straighten metal sheets or plates. It is commonly used in the manufacturing industry, especially in the production of metal products such as automotive parts, household appliances, and electronic gadgets.

The metal straightener machine works by applying pressure to the metal plate. The plate is passed between a series of rollers or leveling dies, each of which exerts a certain amount of force to gradually flatten and straighten the material. The machine typically has a conveyor system that feeds the metal plate into the straightening rollers automatically.

The metal straightening process can correct distortions or waves in the material, which can be caused by previous manufacturing processes or handling. The final result is a flat, uniform sheet or plate that is suitable for use in further production processes.

Metal straightener machines come in various configurations and sizes depending on the type and thickness of the material being straightened. The machine can be operated manually or automatically, and may feature digital displays and control systems to ensure precision and accuracy during the straightening process.