Four Rolls Plate Rolling Machine

Four Rolls Plate Rolling Machine

1. Four Rolls Plate Rolling Machine Preface

The four rolls plate rolling machine can pre-bend the ends of plate, feed steel plate just one time, and then to pre-bend the ends of plate, roll the workspace to drums shape, don’t need to return. The working up roller is the main drive roller, the down rollers and side roller use hydraulic drive to do elevate movement. And move controlled by computer, horizontal adjust automatic, show by screen, the synchromesh accuracy attached ±0.2mm. Turnover and resume of flip-bearing used hydraulic to drive. Installed balance system on the ends of up roller, so it’s easy to unload work piece. Adopt mobile independence operator table, so can operator at any time and any place, the machine has safety interlock device. For a world it has high technology, overall function, high accuracy and easy to operator. So it’s the model rolling machine, it’s the first choice in energy, transport, fossil oil, chemical, shipbuilding, steel and some other industries.
This machine composed of four working rollers, left and right rack of machine, base board, rolling rhombus tube function, turnover part, device part, sensor part, hydraulic system, electrical system and so on.

2. Four Rolls Plate Rolling Machine Electrical System
(1) Structure
Electrical system display by touch screen and adopts OMRON product(includes input and output models. this system has some advantages as the example high ability to prevent interference, long life, prevent shock, work  steady and so on.
Sensor adopts high accuracy optical encoder to ensure position accuracy and monitor the position of all rollers. The main components of high voltage part adopt SIMENS products or some foreign products. So it’s has some advantages like as long life, no breakdown time long.
(2) Function of Control System
A. Automatic control working rollers do synchronization movement
Control the down roller elevating synchronization, the accuracy attached ±0.2mm.
Control two sides rollers elevating synchronization, the accuracy attached ±0.2mm
B. Show data and the plate information at actual time
Two ends absolutely position show at real time of down roll
Two ends absolutely position show at real time of sides’ rollers
The ends gradient show at real time of down roller
The ends gradient show at real time of sides rollers
C. Control system provide alarm message, its help to do some cooperate and maintain.

3. Four Rolls Plate Rolling Machine Advantages

(1) The side rolls are positioned to the right and left of the bottom roll and are on their own axes. The independent axis of each roll helps make a perfect bend. The “back” side roll (at the far side of the feeding point) also functions as a back gauge to square the plate for proper alignment. This eliminates the need for someone to assist the operator.
(2) The plate is kept square without slipping during both pre-bending and rolling because of the constant secure clamping of the top and bottom rolls.
(3) Four roll machines do not require the operator to remove, flip, and then try to square and reposition the plate a second time after first pre-bending, as is the case with three roll initial pinch machines. Keeping the material in the machine makes four rolls 50% more efficient than three roll initial pinch machines, and allows a cylinderical shapes to be rolled to the required diameter immediately following pre-bending.
(4) Bending the back edge takes place after the rolling process, for a one direction and single pass operation. This process provides less working area.

4. Main Components of Four Rolls Plate Rolling Machine

Number	Component Name	Model	Manufacturer
1	Work roller	Up, bottom, side rollers	South steel
2	Ends roller of roller	Roller bearing
3	Main motor	YZR series motor	Jiangsu
4	Hydraulic valve		Taiwan
5	Seal washer of oil vat	YX series seal washer	Shenyang
6	High voltage soft pipe		Kaifeng
7	PLC	C200HE－CPU	ORMON
8	Touch screen	NT20－ST	ORMON
9	photoelectric encoder		Chengdu