It is a kind of equipment that uses work rolls to bend sheet metal. It can form parts of different shapes such as cylindrical parts and cones. It is a very important processing equipment.
1.1 Working principle
The working principle of the steel plate rolling machine is that the upper roller is at the center of the two lower rollers at a symmetrical position through the hydraulic oil in the hydraulic cylinder to act on the piston to move vertically. And the final gear of the main reducer drives the gears of the two lower rollers to mesh for rotational movement.
The rolled sheet provides torque. The metal plate with flat specifications passes between the three working rolls (two lower rolls and one upper roll) of the plate rolling machine. With the help of the pressing of the upper roller and the rotating movement of the lower roller, the metal plate undergoes multiple continuous rolls to produce permanent plastic deformation, rolled into the required cylinder, cone, or part of them.
1.2 Types
Due to different fields of usage, the types of metal sheet plate rolling machines are also different. From the number of rollers, it is divided into three-roller and four-roller metal sheet rolling machines.
The three-roller is divided into a symmetry three-roller sheet rolling machine, a level-down three-roller sheet rolling machine, an asymmetry three-roller sheet rolling machine, and an upper roller universal three-roller sheet rolling machine. The Shenchong 4-roll hydraulic steel plate rolling machines and asymmetry 3-roll steel plate rolling machines are mostly exporting models, which are sold abroad.
From the transmission mode, it is divided into mechanical and hydraulic. The following describes the characteristics of different types in detail from these two aspects.
Mainly three-roller plate bending machine includes symmetrical and asymmetrical.
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.
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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.
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.
In general, the specific model depends on your specific rolling requirements, and always be welcome to have a visit or consult with Shenchong to get one customized proposal at any time.
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