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Product Description

Working rolls of plate rolling machine

The working rolls are easy to maintain and have a long service life. Moreover, the main drive has high efficiency and saves power consumption.

Classification and Usage Scenarios

  • Hollow roller (for thinner materials): Recommended to buy hollow rolls for materials below 6 thick, offering a more affordable price.
  • Solid roller (for thicker materials): Designed for heavy-duty rolling operations.
Plate rolling machine screw structure As shown in the figure, the screw on the plate rolling machine mainly plays the role of connection and fixation.

Key Components & Systems

Siemens Component
Brand: Siemens
Hydraulic Component
High-performance System
Japan NOK seals
Stand-alone system, easy maintenance (For hydraulic plate rolling machines) Brand: Japan NOK

The Working Principle of the Plate Rolling Machine

The plate rolling machine is a kind of equipment that uses work rolls to bend and form the sheet metal. It can form parts of different shapes such as cylindrical parts and conical parts. It is a very important processing equipment.

The working principle of the plate rolling machine is to move the work roll through the action of hydraulic pressure, mechanical force and other external forces, so that the plate is bent or rolled into shape. According to the rotation movement and position changes of the work rolls of different shapes, oval parts, arc parts, cylindrical parts and other parts can be processed.

Rolling Machine Classification

  • According to the number of rolls: It can be divided into three-roll plate rolling machine and four-roll plate rolling machine. The three-roll plate rolling machine can be further divided into symmetrical three-roll plate rolling machine (mechanical), upper roll universal plate rolling machine (hydraulic type), and hydraulic CNC plate rolling machine. The four-roller plate rolling machine is only available in hydraulic type.
  • According to the transmission mode: It can be divided into mechanical type and hydraulic type. Only the hydraulic type has an operating system, and the mechanical plate rolling machine does not have an operating system.

Applicable Materials

Carbon Steel Stainless Steel Aluminum Copper High Carbon Steel Other Metals

What is a Universal Rolling Machine?

Its three rollers are all solid forged rollers, and have been tempered and quenched. The upper roller can move horizontally and up and down, and the plate can be rolled down by vertically moving up and down of the hydraulic cylinder. It can also be rolled horizontally. Move, pre-bend the straight edge of the sheet to achieve a better rounding effect. The middle of the upper roller is in the shape of a drum, and a set of supporting rollers at the front and rear of the lower roller jointly solve the problem of bulging in the middle of the reel.

The lower roller is the main rotating roller, and the lower roller is driven to rotate by the motor reducer. Equipped with hydraulic tipping, the tipping cylinder can be tilted down to take the workpiece more convenient and labor-saving. The machine is equipped with plc programmable display control, and the digital operation is easy to learn. The upper roll universal plate rolling machine is the most advanced model in the three-roll plate rolling machine. It is very suitable for rolling thick plates, and can be 120mm, 140mm, 160mm.

What is a Four Roll Plate Rolling Machine?

  • The upper roller is lifted up and down by the oil cylinder, and the main structure is welded by H-shaped steel on both sides.
  • The side rollers are powered by two sets of oil cylinders, and the roller frames on the brackets are determined according to different commonly used diameters.
  • Internal components: The hydraulic motor is connected to the reducer, the hydraulic valve group is below, the main motor is next to it, and the electrical cabinet is behind.

Universal Plate Rolling Machine VS Mechanical Plate Rolling Machine

Universal Plate Rolling Machine

The upper roller universal plate rolling machine has dual functions of pre-bending and rolling, and there is an extra lower drag roller, driven by hydraulic drive.

Mechanical Plate Rolling Machine

The mechanical plate rolling machine has no pre-bending function, the drive is a motor-driven gearbox, and the gearbox drives the lower roll.

Three Roll Plate Rolling Machine vs Four Roll Plate Rolling Machine

Three Roll Plate Bending Machine

Manual unloading method, which requires manual unloading of the processed workpiece.

Four Roll Plate Rolling Machine

Controlled by buttons, which is convenient and quick to unload, and it is much safer than the three-roll plate rolling machine.

Upper Roll Universal Plate Rolling Machine vs Four Roll Plate Rolling Machine

Pre-bending method

Upper Roll Universal

Pre-bent by the upper roller, and the upper roller can be pressed down or moved horizontally. Its disadvantage is that translation takes a certain amount of time, and the efficiency is slightly lower.

Four Roll Machine

Pre-bent by lifting the side rolls, and the speed is very fast, especially the advantage of pressing the plate below 20 mm is more obvious.

Control method

Upper Roll Universal

The lower roller is fixed, and it lacks a positioning ruler when rolling and feeding, and requires manual measurement and calibration, so it cannot realize numerical control, and can only be called digital display or simple numerical control.

Four Roll Machine

When feeding, the side roller is used as a guide, the system is controlled and the positioning is accurate, which makes it realize the numerical control and has the function of one-key rolling.

Key Specifications Required for Selection

  • 1. The texture of the material you use?
  • 2. Material thickness and width?
  • 3. Minimum roll diameter (inner diameter)?

Rolling Machine Product Advantages

  • Our three rolls are all made of superior forged circles, which are rough processed, quenched and tempered, finished, and quenched. The material is durable and has high surface hardness. Compared with ordinary round steel or even hollow rolls used in other areas, it is superior in quality.
  • The chassis and wall panels of our plate rolling machine are processed as a whole after welding and forming. The materials are abundant and high-precision, and the welding process of loose parts is not used.
  • As for accessories, the motors and reducers of our plate rolling machine are all locally produced high-quality products, and the electrical appliances are Siemens, with stable overall performance, low failure rate and long service life.
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Frequently Asked Questions

What is the difference between hollow and solid rollers?

Hollow rollers are recommended for thinner materials (below 6mm thick) as they are more affordable. Solid rollers are designed for thicker and heavy-duty materials to ensure durability and prevent deformation under load.

What are the main advantages of a four-roll plate rolling machine over a three-roll machine?

A four-roll machine features button-controlled automatic unloading which is convenient and quick, whereas three-roll machines require manual unloading. Additionally, four-roll machines offer precise guide positioning for true CNC and one-key rolling capability.

Which materials can be processed using these rolling machines?

These plate rolling machines are highly versatile and can process carbon steel, stainless steel, aluminum, copper, high carbon steel, and various other industrial metals.

How does pre-bending work on an upper roll universal machine compared to a four-roll machine?

The upper roll universal machine pre-bends by moving the upper roller down or horizontally, which takes slightly longer. The four-roll machine pre-bends quickly by lifting the side rolls, offering a clear speed advantage especially for plates under 20mm.

What information is needed to choose the right plate rolling machine?

To select the correct machine model, you need to know the specific material texture (e.g., stainless steel, carbon steel), the thickness and width of the sheets you intend to roll, and the minimum inner roll diameter required for your finished products.

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