ONK Servo Application on Screw Presses
Servo System Control The screw press is a revolutionary upgrade product of the screw press industry. Its performance can absolutely meet the requirements of the refractory manufacturer and surpass its expected goal. The economic and social benefits resulting from energy-saving and emission reduction, reduction of staff and efficiency, and improvement of the overall quality of refractories are enormous and have far-reaching implications.
First, introduce:
A screw press is a general term for a pressure machine in which pressure is generated by rotating a group of more than one outer bolt and an inner bolt in a frame. Divided into two types according to structure:
One is the method of generating static pressure by applying torque to the bolts. It is also called a screw press. One is to generate energy through the rotation of the flywheel fixed on the bolts, and the energy is released once to generate a pressure. It is also called a friction press.
The development history of screw presses are: human-driven screw presses, friction presses, switched reluctance motor-driven screw presses, and servo-driven screw presses.
Screw presses are used in the processing of high, medium and low-grade refractory products; various metal materials are widely used in the cold forging, hot forging and casting industries.
The servo-driven screw press is used to drive the upper and lower displacements of the slider to produce pressure through the rotation of the servo-driven bolt structure. It is a kind of screw press, and it is the upgrading product of the friction press and switch reluctance press.
Second, servo control screw press composition, features:
The whole machine can be roughly divided into control execution system; mechanical part; lubrication and cooling part. Among them, the control part selects the touch screen as parameter setting, order management, and system monitoring. PLC as a logic control; the implementation of the use of ONK intelligent servo drive plus AC permanent magnet synchronous servo motor. The entire system is intelligent, efficient, optimized, and simple.
1, which ONK intelligent driver has the following characteristics:
1) AC 380V direct input, power up to 280KW, suitable for all kinds of high torque direct drive applications.
2) 8KHz pulse sampling rate, high dynamic response speed, to meet the requirements of various equipment response speed.
3) European-style design concept, with 22 I/O programmable digital inputs and outputs, powerful functions, and flexible combination of multiple control modes.
4) It can drive AC permanent magnet synchronous servo motor, AC asynchronous servo motor and common squirrel cage motor, and the system is more convenient and economical.
2. AC permanent magnet synchronous servo motor has the following features:
1) The inertia is moderate, so that it has a very high dynamic response speed, rapid start and stop, and precision.
2) 0-speed output rated torque, low-frequency torque characteristics, a wide range of constant torque.
3) Strong overload capacity, generally up to 1.5-3 times.
4) Full-closed-loop vector control ensures stable speed and accurate positioning.
5) The stator heat dissipation design ensures stable operation and long service life.
6) Maintenance-free design reduces post-maintenance costs.
3. Based on the characteristics of ONK intelligent drive and the characteristics of AC permanent magnet servo motor, the full range of servo controlled screw press has the following features:
1) A little movement, work pattern design, easy to adjust mold, try mold, make samples, etc.
2) Parameters such as speed, number of strikes, strike strength, and strike time may be set.
3) The system has password protection to prevent misoperation.
4) The system has an introduction to the use of machinery and operating instructions. The requirements for operators are simple.
5) The system has fault records and processing methods to facilitate maintenance.
6) It has a variety of protection functions such as grating detection, motor braking, and mechanical braking.
7) Optional automatic feeding, automatic brick out.
Third, after the direct use of refractory materials plant after the comparison feedback, servo-driven screw press and the current switch reluctance motor control screw press has the following advantages:
1. The servo control can precisely control the striking strength, and can strike the raw materials lightly and heavily (first exhaust and then hit the molding) to make the quality of refractory molding products high.
2. The servo control strike position is more accurate, so that the same batch of product process parameters are consistent, ensure that the product volume, density, size is consistent, the product consistency is good, and the product pass rate is extremely high.
3. The CNC system intelligently controls the entire production process, making the molding process programmable, reducing labor, reducing the labor intensity of workers, reducing skilled requirements for operators, and increasing production efficiency by 35%.
4, according to the product process automatic control system operation, product molding system operation, feeding, brick, clean the mold when the system stops, coupled with the servo motor effective power, so that compared to the switch reluctance motor drive energy-saving 55%.
5, simple structure, fewer wearing parts, reduce maintenance costs.
6. More stable operation, lower noise, safer and more reliable.
Metal USB flash drive adopts fashionable metal housing design, waterproof, shockproof effect that can resist external pressure, easy to carry, compact appearance, convenient for users to safely carry it together with other devices. No driver, plug and play, compatible with most USB devices, mobile phones, computers.
To avoid data loss or mechanical damage, do not power down your computer or unplug flash disk during transfer.
Please do not remove your USB flash drive when it is being used otherwise your data may loss.
After using USB flash drive, it is better to remove it from device as soon as possible. That will helps to extend its storage lifetime.
Please do not format your USB flash drive frequently, otherwise the USB will be damaged easily.
USB flash disk,Memory stick ,Metal Usb Flash Drive,Metal Usb Housing,USB Stick, Pen Drive,USB,Pen disk
MICROBITS TECHNOLOGY LIMITED , http://www.microbitstrade.com