The mould press prebending adopts involutes types mould and simultaneously fold bending the two edges of plate by steps.
模压式预弯采用渐开线式模具，分步对钢板的两边同时进行折弯。
2
In order to adjust the bending Angle, the T-type slide seat and bendingpressplate were used.
模具采用T形滑座与弯曲角两边的压板调节，从而达到在一定范围内调节弯曲角度的目的。
3
In order to adjust the bending Angle, the t type slide seat and bendingpressplate were used. The adjusting of bending radius was implemented by replacing the adjusting axis of bending radius.