2. Mechanical rolling machine
2.1 Mechanical symmetry 3-roll steel plate rolling machine
The structure of the machine is 3-roller symmetrical type. The upper roller moves vertically at the symmetrical position of the two lower rollers. It is obtained by the transmission of the screw and screw nut. The two lower rollers rotate through the output gear of the reducer and the lower roller.
The gears mesh to provide torque for the rolled sheet. The disadvantage of this machine is that the end of the plate needs to be pre-bent with other equipment.
2.2 Mechanical asymmetric 3-roll steel plate rolling machine
The structure of the machine is a 3-roller asymmetrical type. The upper roller is the main drive, and the lower roller moves vertically to clamp the plate.
The lower roller gear meshes with the upper roller gear and serves as the main drive at the same time; the side rollers are tilted and lifted. With dual functions of pre-bending and rolling. Compact structure, convenient operation and maintenance.
3. Hydraulic steel plate rolling machine
Includes three-roller and four-roller
3.1 CNC Hydraulic three-roller symmetrical series
The upper roller can be vertically lifted, and the vertical lifting hydraulic transmission is obtained by the hydraulic oil in the hydraulic cylinder acting on the piston rod; the lower roller is driven by rotation, and the output gear meshes through the reducer.
To provide torque for the coil, there is an idler under the lower roller, which can be adjusted. The upper roller is in the shape of a drum, which improves the straightness of the product and is suitable for ultra-long tanks with various cross-sectional shapes.
3.2 CNC Hydraulic four-roller symmetrical series
The position of the upper roller is fixed, and the lower roller moves upward linearly to clamp the steel plate. The rollers on both sides move in a straight line or arc to move closer to the roller to adjust the radius of curvature of the roll.
The four-roller and three-roller rolling machines have different roller motion forms, but the working principle is the same, they both use the principle of three-point fixed circle to carry out different radii. However, the pre-bending straight edge and roundness of the four-roller bending machine are better than those of the three-roller.