I. Main Features:
The structure of the machine is a three roll symmetrical type. The upper roll performs vertical lifting and lowering motion at the symmetrical position of the center of the two lower rolls. The lifting and lowering motion of the upper roll is obtained through the transmission of a screw and worm, and the mutual rotation motion of the two lower rolls is obtained through the meshing of the output gear of the reducer and the lower roll gear, providing torque for the rolled sheet metal. The machine is an integral structure, with the working and main transmission parts installed on a rigid welded base, which facilitates the installation and debugging of the machine.
II. Main structure:
The structure of the machine is a three roll symmetrical type. The upper roll performs vertical lifting and lowering motion at the symmetrical position of the center of the two lower rolls. The lifting and lowering motion of the upper roll is obtained through the transmission of a screw and worm, and the mutual rotation motion of the two lower rolls is obtained through the meshing of the output gear of the reducer and the lower roll gear, providing torque for the rolled sheet metal. The machine is an integral structure, with the working and main transmission parts installed on a rigid welded base, which facilitates the installation and debugging of the machine.
II-1 upper roller device
The upper roller device consists of an upper roller, a bearing seat, SF-2 composite bearings, etc.
(1) Upper roller material and processing method
The lower work rolls are made of high-strength steel and processed through multiple programs such as precision lathe machining (note: the processing program of the rolls may vary according to different user needs); Strictly ensure high contact strength on the surface of the work roll, and ensure that there are no pressure marks on the roll surface during rolling of steel plates, which can meet the requirements for long-term rolling of steel plates. Intermediate frequency quenching on the surface of the upper roller after precision machining: HRC 45-55.
(2) Vertical movement mode of the upper roller
Obtain the upward and downward movement of the upper roller through the transmission of screw and worm gear.
II-2. Lower roller device
The lower roller device consists of a lower roller, a lower roller input gear, SF-2 composite bearings, etc.
(1) Material and processing method of the lower roller
The lower work rollers are made of high-strength roller steel and processed through multiple programs such as precision lathe machining (note: the processing program of the rollers may vary according to different user needs); Strictly ensure high contact strength on the surface of the work roll, and ensure that there are no pressure marks on the roll surface during rolling of steel plates, which can meet the requirements for long-term rolling of steel plates. Intermediate frequency quenching on the surface of the upper roller after precision machining: HRC 45-55.
(2) The rotational motion of the lower roller
The motor meshes with the lower roller gear through the output gear of the reducer to obtain mutual rotational motion between the two lower rollers, providing torque for the rolled sheet.
II-3. Upper roller down-moving device
The upper roller down-moving device consists of a motor, a reducer, a worm gear mechanism, a screw nut lifting mechanism, etc.
II-4. Balance device
The balancing device consists of a support, screw, adjusting nut, etc
II-5. Overturning device
The overturning device consists of a frame, handle, pivot pin, etc.
II-6 Frame and Base
The frame and Base are welded steel plates, and stress is removed by vibration aging after welding.
II-7 main drive device
The main transmission device consists of a main motor, a main reducer, a coupling, an output gear, etc.
III.Electrical control system:
- The electrical control system includes hardware components such as the main electrical cabinet.
- Main technical indicators:
Mean time between failures: ≥ 20000 hours
When the roller lifting displacement is synchronously controlled
This system has advanced design, good operational performance, safe and reliable operation, good fault tolerance, and the following functions.
Soft limit protection function for each moving component;
Security protection function: In case of unexpected situations, operators can easily and promptly shut down equipment and systems to ensure the safety of equipment and personnel.
IV.Rolling process :
