What is the difference between four-roller plate rolling machine and three-roller plate rolling machine？

In the metal processing industry, plate rolling machine is one of the indispensable equipment. According to the different structural design, plate rolling machine is mainly divided into two categories: three-roller plate rolling machine and four-roller plate rolling machine. Although they are both used for metal plate bending and forming, there are many differences in structural configuration, processing capacity, ease of operation and application areas. Below, will take you to explore in detail the main differences between the four-roller plate rolling machine and three-roller plate rolling machine.

1. Structure differences 

Four-roller plate rolling machine consists of two pairs of rollers, one of which is the work roller, the other pair of support rollers. The work rollers mainly complete the bending and rolling of the plate, while the support rollers play the role of support and positioning. Unlike it, the three-roller plate rolling machine has only one set of work rollers and two sets of support rollers, which need to be adjusted by the contour curve to adjust the roll gap in the process, so as to achieve the effect of rolling. The structure of the three-roller plate rolling machine is relatively simple, easy to operate.

2. Processing performance 

Three-roller plate rolling machine can roll the metal plate into round, arc, its roll in the two lower rollers in the central symmetrical position for vertical lifting and lowering movement, obtained through the screw mother worm gear transmission, the two lower rollers for rotary movement, driven by the motor. Through the output gear of the reducer and the lower roller gear meshing, to provide torque for the rolled sheet, the end of the sheet needs to be pre-bent with the help of other equipment.　　
Four-roller plate rolling machine is suitable for metal plate bending and forming work, can roll round, arc and a certain range of conical workpiece, and plate end pre-bending function, the remaining straight edge is small, and can be rough leveling of metal plates.

3. Convenience of operation 

Four-roller plate rolling machine has a greater advantage in intelligent control, equipped with CNC system, to achieve automated feeding, positioning and rolling. Although the initial operation may be slightly cumbersome, once mastered the correct operation method, four-roller plate rolling machine can also achieve efficient and stable operation. The three-roller plate rolling machine has a relatively simple structure and fewer parts, so it is more convenient to operate. Whether it is to adjust the roller spacing or replace the plate, three-roller plate rolling machine can be completed in a short time.

4.Applicable Scenarios 

Four-roll plate rolling machine is widely used in the processing of large-scale metal structural parts such as ships, bridges, buildings and so on because of its strong processing capacity and high precision. While the three-roller plate rolling machine is more suitable for small and medium-sized metal processing enterprises and some of the processing precision requirements are not high.

5. Maintenance and maintenance 

four-roller plate rolling machine due to its complex structure, for the maintenance and maintenance requirements are relatively high. Need to regularly check the equipment, cleaning and lubrication to ensure its normal operation and extend the service life. Although the three-roller plate rolling machine is relatively simple to maintain, but you can not ignore the daily maintenance work. Only by doing a good job of maintenance and repair of the equipment can ensure stable operation and prolong the service life of the equipment.

In summary, four-roller plate rolling machine and three-roller plate rolling machine have their own advantages and applicable scenes. When you choose the equipment, you should make comprehensive consideration according to your own processing needs, production scale and budget and other factors. For example, if the enterprise needs to deal with a large number of plates and has high requirements for processing accuracy and efficiency, then the four-roller plate rolling machine is undoubtedly a better choice. If the enterprise budget is limited or only need to deal with a small number of plates and processing precision requirements are not high, then three-roller coiler may be a more economical and practical choice. At the same time, no matter which type of plate rolling machine to choose, should pay attention to the daily maintenance and repair of the equipment to ensure stable operation and prolong the service life of the equipment.

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