In order to realize pinch during the production of the continuous casting battery grid, using the link and floating mechanism a pinch machine is designed which can automatically adjust the roll gap and pinch tension. First the structure of the grid pinch machine is introduced ,in which adopts the dual drive roller to achieve the upper and lower pinch roll and pinch roll to rotate in accordance with the same speed, but in the opposite direction. The pinch force generates by the fiction force between the grid plate and the upper and lower pinch roller. By means of the shifting bearing and spring the position of the upper pinch roller is controlled and the roll gap adjustment mechanism adopts the link and floating gear mechanism which results in structure simplification , high reliability, Low cost, stable, long life and low noise. Finally, according to the design principle of the pinch machine, using the theoretical mechanics and the Euler formula the pinch roller tension, tension roller tension and pinch pressure are calculated. The pinch machine has made it possible to achieve the manufacturing system of continuous casting battery grid.