CNC electric servo four-roller plate rolling machine

Plate feed

The side roll of the plate is automatically aligned immediately, and the principle of action is similar to that of the hydraulic ruler. The schematic diagram of the structure is as follows:
The plate is always clamped between the upper and lower rollers in the two plays to ensure consistent and ideal positioning.

Solid fuselage construction

The accuracy of the rolling machine depends on the robustness of the frame and chassis.
The plate rolling machine adopts a box structure design with a heavy metal plate.
The frames are connected via a sturdy box-design chassis that meets torsional moments well, rather than sitting on a simply designed H or U beam.
After the welding operation, the frame and chassis have been relieved of stress. The whole body adopts 5-axis machining
CNC machining centers utilize a fixed single reference point. This allows for the parallelism of all axes
Precise surfaces as well as service life and precision are key characteristics of the machine.

Engineering and production advantages

The mechanical and hydraulic systems on the W12 machines are designed by experienced engineers. These engineers utilize parametric 3D engineering techniques and the implementation of static and institutional analysis to design machines.
All mechanical, hydraulic, and electronic systems are designed and tested by electrical and mechanical engineers. Only after a long period of testing and evaluation is the machine authorized for mass production.

Roll and crown

The most important component of the plate rolling machine is the roll itself. Most machines on the market have smaller diameters, and weaker rolls that deform and form flat points at the edge of the plate during pre-bending.
We designed the rolls with a larger diameter and used high-strength forged steel rolls machined by high-precision CNC lathes. The work surface of the roll is subjected to CNC induction hardening to HRC 54-58 (depth 5-6 mm) and hardness testing is carried out at different points of the roll. A minimum bending diameter of 1.1x upper roll diameter is easily achieved.
The roll is machined with a crown to compensate for the deflection of the roll during pre-bending. Custom crown processing rolls of different materials or thicknesses can be used free of charge upon order.

Optional dynamic roll crown

In some cases, the range of plate thickness may be very wide. In this case, it is necessary to use a dynamic roll crown system to eliminate the crown problem. The system is only used to support rolls of thin plates, while when bending thick plates, the hydraulic crown cylinder applies a negative crown to the rolls from the bottom to eliminate deflection that can occur during pre-bending. This system helps to obtain a smoother pre-bent edge.
W12 Series hydraulic drop end on 4 rollers - easy removal of molded parts.

Coning device

With excellent construction, a large body, and the ability to Angle the bottom and side rollers, you can easily bend wide-angle and small-diameter conical parts.

Electrical system

The driving method is to directly drive the worm gear of the ball screw lifter through a servo motor, and the worm gear drives the nut of the ball screw. The rotation of the nut causes the ball screw to rise and fall, and the ball screw is connected to the side roller seat, so that the side roller moves up and down, and the lower roller also moves in the same way. This method differs from other factories that use servo motors to drive hydraulic pumps, and then control the oil cylinder through proportional valves. The stroke of the oil cylinder is then fed back to the PLC through a displacement sensor. In terms of control, our company's method has a more direct control accuracy, and there is no accumulated error, which is a prerequisite for ensuring high-precision rolling.

Ideal for clamping

In the W12 series of roll bending machines, plate clamping is achieved by moving the strong torsion bar of the lower roll. The torsion bar is driven by 2 hydraulic cylinders to ensure optimal parallel clamping of the sheet.
When the cone is bent, a third hydraulic cylinder on the torsion bar tilts the lower roll.
In the W12 series, the lower rollers are driven by powerful hydraulic cylinders at both ends. It is electronically synchronized with each other, with an error of less than 0.1 mm.

Optional side and top support systems

Optional hydraulic side or top supports help prevent cylinder deformation when bending in large shapes. The side supports have hydraulic double cylinders and are made of heavy steel structure.

Vertical support capacity can be manufactured according to different tonnage and height requirements.

PLC control system (Standard)

PLC electronic balance system ensures synchronous operation of lower and side rollers W12 series machines. The process is provided by a PLC and touch operation panel, which controls 6 axes. In addition, the ability to program up to 5 previously experienced bend value setpoints enables ease of use and time savings.
Machine tool electrical control system based on PLC, equipped with electrical control and hydraulic control, to achieve a variety of machine actions. The main operation buttons are based on the console.

Synchronous digital control of the left and right side rollers and the lower rollers must be in the operating state of the console. Down run control. The number of moves for each action is displayed on the touchscreen interface for easy and intuitive operation. Due to the work of the left and right side rollers and the lower rollers, the work of the tipping frame adopts hydraulic power. Start the oil pump motor before moving.