●The working principle of the rolling machine
The upper roller of the symmetrical plate rolling machine is at the symmetrical position of the two lower rollers through the hydraulic oil in the hydraulic cylinder acting on the piston for vertical lifting movement, and the final gear of the main reducer drives the gears of the two lower rollers to mesh for rotational movement, which is the rolling motion provide torque. The flat plastic metal plate of the bending machine passes between the three working rolls (two lower rolls and one upper roll) of the bending machine. With the help of the lower pressure of the upper roll and the rotation of the lower roll, the metal plate is passed through multiple passes. Continuous bending (the inner layer is compressed and deformed, the middle layer is unchanged, and the outer layer is stretched and deformed) to produce permanent plastic deformation and roll into the required cylinder, cone, or part of them. The disadvantage of this hydraulic three-roller bending machine is that the end of the plate needs to be pre-bent with the help of other equipment. This rolling machine is suitable for large rolling machines with a thickness of more than 50mm. A row of fixed idlers is added under the two lower rollers to shorten the span between the two lower rollers, thereby improving the precision of the rolled workpiece and the overall performance of the machine.
●The structural characteristics of the rolling machine
The automatic feeding equipment of the rolling machine is mainly composed of a sheet trolley, an actuator, a sheet transfer mechanism, and an auxiliary mechanism. The sheet trolley is used to place the sheets to be rolled. The main function of the actuator is to transport the plate to be rolled on the plate trolley to the feeding platform. The plate handling operation is mainly applied to the rectangular coordinate manipulator and the vacuum suction cup picking device. In industrial automation systems, it is often necessary to pick up and transport workpieces, and vacuum suction cups are widely used as suction cup manipulators.
The transmission methods of Cartesian coordinate manipulators mainly include mechanical transmission (rack and pinion transmission, synchronous belt transmission, ball screw transmission), linear motor transmission, and pneumatic transmission. The sheet material transfer mechanism is mainly used to transfer the sheet to be rolled, and there are common roller shaft transfers and universal ball transfer. The main function of the auxiliary mechanism is to improve the precision of sheet rolling. Common auxiliary mechanisms include a sheet center alignment device, push device, and displacement detection device.