Bending machines vary in type depending on the field of use. From the number of rolls, it is divided into a three-roller and a four-roller. Three-roller and symmetrical three-roller bending machine, horizontal down-regulating three-roller bending machine, arc-down type coiling machine, upper-roller universal three-roller bending machine, hydraulic CNC rolling machine. Mechanical and hydraulic from the transmission. From the development of the coiling machine, the upper roller type is relatively backward, the horizontal down mode is slightly advanced, and the arc down mode is relatively new.
Three-roller bending machine has 1, mechanical and 2 hydraulic
1. Mechanical three-roll bending machine is divided into symmetrical and asymmetrical.
Mechanical three-roller symmetry
Mechanical three-roller symmetrical bending machine performance characteristics: The structure of the machine is three-roller symmetrical type, the upper roller is vertically lifted and moved in the central symmetrical position of the two lower rollers, which is obtained by screw-threaded worm drive, and the two lower rollers are used. Rotating motion, the output gear of the reducer meshes with the lower roller gear to provide torque for the rolled sheet. The disadvantage of this machine is that the end of the plate needs to be pre-bent by means of other equipment.
Mechanical three-roller asymmetric
Main features of the mechanical three-roller asymmetric bending machine: the structure of the machine is a three-roller asymmetric type, the upper roller is the main drive, and the lower roller is vertically moved up and down to clamp the plate and mesh with the upper roller gear through the lower roller gear. At the same time, as the main drive; the side rollers are used for tilting and lifting movements, and have the dual functions of pre-bending and rolling. Compact structure and easy operation and maintenance.
2, hydraulic
The main features of the hydraulic three-roller symmetrical bending machine: the upper roller of the machine can be vertically lifted, and the hydraulic transmission of vertical lifting 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. Torque is provided for the coil, and the lower roller has a roller at the lower part and is adjustable. The upper roller is in the shape of a drum, which improves the straightness of the product and is suitable for cans of various cross-section shapes of ultra-long specifications.
For the up-regulating symmetrical three-roll bending machine, the metal sheet can be rolled into a circular, curved and conical workpiece within a certain range. The two lower rollers of the machine are active rollers, and the upper roller is a driven roller. It is widely used in shipbuilding, boiler, aviation, hydropower, chemical, metal structure and machinery manufacturing industries.
It is suitable for the bending deformation of sheet metal. It can be rolled into a circular shape, curved shape and a certain range of tapered workpieces. It has the function of pre-bending at the end of the plate. The two lower rollers of this model are movable rollers that can move horizontally. The roller is a driven roller that can move up and down. The moving mode is mechanical and hydraulic, and the transmission shaft is connected by a universal coupling.
