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The Difference Between 3-Roller Plate Rolling Machine and 4-Roller Plate Rolling Machine
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The Difference Between 3-Roller Plate Rolling Machine and 4-Roller Plate Rolling Machine

Views: 189     Author: Site Editor     Publish Time: 2022-02-24      Origin: Site Inquire

Rolling machine is a kind of non-metal plate bending roll into a cone, spherical body, cylinder or other shape of a public forging machinery and equipment. This performance is a large number of used in the manufacture of goods, boiler steam, chemical industry, non-metal structure and machine building and other businesses. Coiling machine due to the use of different fields. The types are also different, since the number of rolls is divided into three rolls of plate rolling machine and four rolls of plate rolling machine. Many people feel that three rollers and four rollers rolling machine is just more than a roll of difference, other in fact, there is no difference, so some people in the purchase, holding more than a roll on the idea of more than one efficacy to buy four rollers rolling machine, but in fact, this idea is wrong, because the two have a big difference.

Shape Appearance


Three rollers have three rollers and four rollers have four rollers. In addition to this most obvious feature, the appearance of the three-roller rolling machine is relatively more simple, to simple and practical; four-roller rolling machine because of the hydraulic CNC, so the appearance is also more exquisite and beautiful, the details are also more in place, in the processing accuracy and use of comfort are required.

rolling machine

rolling machine

Machine Structure


The mechanical three-roller coiling machine is also divided into a three-roller symmetrical coiling machine and three-roller asymmetrical coiling machine. three-roller symmetrical coiling machine is above a roller. The following two rollers are symmetrical; three-roller asymmetrical coiling machine is one side of two rollers, one side roller, a roller, is asymmetrical. The difference with the four-roller plate rolling machine is a four-roller plate rolling machine on the main drive, through the reducer, cross-slider coupling and the upper rollers are connected, for the rolled plate to provide torque; lower rollers for vertical lifting movement, through the reducer worm gear (bevel gear) to pay the filament filament and get, in order to clamp the plate, for mechanical transmission; in the lower rollers on both sides with side rollers and along the rack rail for inclined movement, through the filament filament worm worm gear (or bevel gear) drive; four-roller plate rolling machine is up and down respectively two rollers, four work rollers all using dynamic bearings. But the difference between this one roll, resulting in a three-roller rolling machine and four-roller rolling machine step mechanism differences.

rolling machine

rolling machine

Type of Processing


Three rollers plate rolling machine can be rolled into a round, curved metal plate, its roll in the two lower rollers central symmetrical position for vertical lifting movement, through the silk rod filament worm drive to obtain two lower rollers for rotary movement, driven by the motor. Through the output gear of the reducer and the lower roller, gear mesh, to provide torque for the rolled plate, the plate end needs to be pre-bent with the help of other equipment. The four-roller plate rolling machine is suitable for bending and forming of metal plates, and can roll round, curved and conical workpieces within a certain range, and has a plate end pre-bending function, with small remaining straight edges, and can roughly level the metal plates.

rolling machine

Degree of Automation


The three-roller rolling machine is simply controlled by buttons, the four-roller rolling machine has a touch screen and the CNC system can be programmed. Digital control, one roll forming, touch screen support for visual input, editing of work steps, storage of 500 groups of data. Electronic balancing system with EPS to keep the roll movement parallel within 0.15 mm. Support human-machine dialogue, fault self-diagnosis, intelligent judgement of operating errors, drum-shaped rollers, good roll roundness and high straightness. All movements are driven by hydraulic pressure. Both sides of the rolls make straight line movements within the guide rails, smaller centre distance between the two sides of the rolls for precise rolling accuracy, thick overall stand to meet the needs of medium and large rolls. The frame is annealed as a whole to eliminate stress and never deform. The rolls are forged whole, tempered and hardened by a hardening process, compatible with both manual and automatic modes.

rolling machine

rolling machine

Unloading Method


The three rollers are manually unloaded, requiring manual unloading of the machined workpiece. The four rollers are controlled by push buttons, which makes unloading easy and fast, compared to the three rollers.

rolling machine

rolling machine

Roll Movement Form


Three rollers asymmetric type plate rolling machine. The upper roller is the main drive, the lower roller vertical lifting movement in order to clamp the plate, and through the lower roller gear and the upper roller gear mesh, while as the main drive; side roller for tilt lifting movement, with pre-bending and roll round double function. Three rollers symmetrical plate rolling machine, the upper rollers in the two lower rollers centre symmetrical position for vertical lifting movement, through the screw master worm drive and get, two lower rollers for rotary movement, through the output gear of the reducer and the lower roller gear mesh, for rolling plate to provide torque. They work on the same principle, the use of three points of the fixed circle principle for a different radius roll system. However, the four-roller plate rolling machine can pre-bend the straight edge and the roundness of the calibration circle is better than the three-roller plate rolling machine.

rolling machine

rolling machine

Power Mode


Most of the three-roller rolling machines for mechanical rolling machines, of course. There are also hydraulic type rolling machines, but all the four-roller rolling machines are hydraulic rolling machines. Mechanical three-roller symmetrical plate rolling machine structure form for three rollers symmetrical type. The upper roller in the two lower rollers central symmetrical position through the bevel gear transmission action vertical lifting movement, through the main reducer of the un stage gear drive, two lower rollers gear mesh rotational movement, for rolling plate to provide torque. Specification flat plastic metal plate through the three working rollers (two lower rollers, one upper roller) between the rollers, with the upper rollers of the downward pressure and the lower rollers of the rotational movement, so that the metal plate, after multiple continuous bending, produce permanent plastic deformation, rolled into the required cylinder, cone or part of them. The disadvantage of the mechanical three-roller plate rolling machine is that the end of the plate needs to be pre-bent with the help of other equipment. Hydraulic three-roller symmetrical plate rolling machine structure form for three rollers symmetrical type, the upper roller in the two lower rollers central symmetrical position through the hydraulic cylinder hydraulic oil action in the piston for vertical lifting movement, through the main reducer of the final gear drive two lower rollers gear mesh rotational movement, for rolling plate to provide torque. Specification flat plastic metal plate through the three working rollers (two lower rollers, one upper roller) between the rollers, with the upper rollers of the downward pressure and the lower rollers of the rotational movement, so that the metal plate, after multiple continuous bending, produce permanent plastic deformation, rolled into the required cylinder, cone or part of them. The disadvantage of the hydraulic three-roller symmetrical rolling machine is that the end of the plate needs to be pre-bent with the help of other equipment. The hydraulic three-roller symmetrical plate rolling machine is suitable for rolling plate thickness of more than 50 mm. large plate rolling machine. Two lower rollers increased a row of fixed rollers, shortening the two lower rollers span distance, so as to improve the rolled workpiece accuracy and overall performance of the machine. Four-roller plate rolling machine is a hydraulic type plate rolling machine. The upper roller is the main drive, through the output gear of the reducer and the upper roller gear mesh, for rolling plate to provide torque; the lower roller, for vertical lifting movement, through the hydraulic cylinder hydraulic oil acting on the piston and get, in order to clamping plate, for hydraulic transmission; in the lower roller on both sides of the side roller and along the rack rail for tilting movement, through the filament master worm gear transmission; the advantages of the machine is Plate end pre-bending and rounding can be carried out on the same machine.

rolling machine

rolling machine

Work Efficiency


Three rollers plate rolling machine because most of the mechanical plate rolling machine, motor processing efficiency is also lower, and many processes need manual cooperation, so the work efficiency will be lower. Four-roller rolling machine, because of the hydraulic rolling machine and CNC control, motor processing efficiency is high, so the overall work efficiency is also much higher. The workpiece output rate is also much higher than the three-roller rolling machine.

rolling machine

rolling machine

Processing Accuracy


The processing accuracy of the three-roller scrolling machine is general and can meet the basic needs of most factories; the processing accuracy of the four-roller scrolling machine is higher and can also be processed out of cones and other special shapes of workpieces.

rolling machine

rolling machine

Price Comparison


Under the same model, the price of a three-roller rolling machine is inevitably lower than a four-roller rolling machine, because the precision and efficiency of a three-roller rolling machine are lower than a four-roller rolling machine. If the frequency of use of the machine is not high, the precision requirements of the workpiece are not high, you can choose the lower price of the three-roller scrolling machine; but if the product requirements are high, more recommended cost-effective four-roller scrolling machine.

rolling machine

rolling machine

Rolling machines have many models. The structure of each product performance is quite different. want to buy the user of the rolling machine, must fully understand the difference between the various models, do not hold the wrong cognition to buy, or buy the rolling machine, not only does not meet their own work needs, can not give full play to its effectiveness, more will add to their work many problems.

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