>>> News> Back Print Schneider plc in the application of compact spinning spinning frame> 1 Introduction
yarn spinning process is the final steps, is the rovings 30 to 50 times further drafting and twisting, spinning into a certain number of features to meet the relevant quality standards of yarn for twisting, use of woven or knitted . Textile production is based on the size of the total number of spindles that the spinning frame; spun yarn production process is to determine the number of basis; level of quality yarn, raw material consumption and other indicators, such as labor productivity is the embodiment of technical and management level, so , in the textile spinning process occupies an important position.
traditional spinning and roving frame drawing is basically the same principle, and winding and twisting the wire from the ring and ring to complete, so called ring spinning machine. Conventional ring spinning and roving machines, as by a motor drive, through the various agencies need to change gear box speed. Various components in the ring spinning frame, the drafting system is reflected in the yarn spinning performance and quality of the most critical factor, and the new compact spinning technology by drawing part of the creative transformation of the drawing area and a collection of separation zone in the ring between the roller drafting and twisting fibers to be superimposed on the rally or gathering of the pneumatic technology, increasing the need of the tightness, hairiness reduced by about 20% strength is increased by about 10%, while evenness, machine efficiency, there are different degrees of increase, not only can reduce processing costs, while reducing post-processing procedures. Another advantage of compact spinning spinning frame is fully consistent with the original, only more than a pair of rollers gather, in the original ring spinning frame can also be modified, and has broad market prospects.
compact spinning spinning control system much more complicated than ring spinning machine, the first former Houluo La strict synchronization, multiple stretch and twist to achieve precision control, high-count yarn to ensure yarn quality; followed by cancel the ring gear plate, advanced servo control technology to achieve the electronic roll forming technology, enabling organizations to simplify the mechanical, the production rate of increase, and the yarn count and yarn forming tube automatic adjustment.
2, the control system program
In compact spinning spinning control system, we used three sets of Schneider Electrics twin line series servo drive system and brushless servo motors, each controlling the former, Houluo La and steel br> 3, control system for
micro series plc is a company of Schneider Electric has introduced a greater processing power and storage space for small and medium plc (i / o points up to 256 points), a flexible modular design, compact, to require sophisticated functions (pid regulation, high-speed counting, precise positioning, man-machine dialogue, etc.) provided the complex machine economical solution. micro plc built a variety of communication interfaces and human-machine interface expansion interface, easy to implement Connect with other equipment; high-density applications (64 i / o modules, etc.) to make the most compact micro plc controller.
micro plc programming software is compatible with premium plc, has the same communication medium plc statement, pid adjustment statement, statement of operations and other functions designed to function, and on-line modification and other high-performance Debug Diagnostics tool, which greatly enriched the micro plc range of applications, reducing system design time.
twin ; line series is Schneider Electric has introduced a wide range of servo drive and brushless servo motor products with integrated advanced and optimized for brushless motor control technology, and with iec 61131-3 standard programming features and a variety of open interfaces by pulse / direction, i / o control or field bus, etc., motor power range of 0.3 ~ 13.8 nm, the speed range of 4500 ~ 12000 rpm, the flexibility to meet a variety of real-time application requirements, economic, intelligent of application solutions.
through micro plc accurate operation and high precision analog output, twin line series servo control system, can achieve the required close before spinning frame, Houluo La precise synchronization, and steel electronic collar plate forming; micro plc memory extensions for compact spinning spinning frame control data storage capacity needed to provide a strong protection area.
atv31 series inverter is the latest, atv28 series inverter upgrades, power range from 0.18 ~ 15 kw, has six logic inputs, three analog inputs, a logic / analog output and 2 relay outputs. atv31 series inverter with high reliability, the structure compact, easy to use features, built-in a class emc filter, integrated modbus and canopen two industrial field bus, providing motor and drive protection, acceleration / deceleration ramp, 16 preset speed, bipolar (?± 10v ) signal given, pi regulator, brake sequence, and traverse control (traverse function) and many other functions, can satisfy the application requirements of various machinery.
4, spinning electron forming control
spun yarn tube as shown, in charge of the top, tube and pipe at the end of three body parts, use the form of conical cross-wound winding form (also known as a short way down the winding action), with a layer of winding yarn around different diameters, in order to achieve unwinding yarn from the top tube when the tube is not turning out to meet the purpose of high-speed unwinding.
winding movement by forming a combination of two movements: <br > * circular motion: the motor through the spindle bobbin with constant rotation
?· drag axial movement: a short ring plate moving way down the winding surface of the yarn guide movement evenly distributed
which:
?· winding speed (nw) = spindle speed - bead speed? v / (pdx) (v: front roller speed, dx: bobbin winding diameter)
?· ring plate lifting speed (vr) == d * nw (d: winding pitch)
Thus, in forming spinning electronic control, the use of servo ring system control board short range move down movement, according to the front roller of the qualifying degree of speed and set the thickness of yarn winding and forming a high pitch, to calculate the yarn in the winding pipe body and pipe at the end of the required ring plate lifting speed; by the encoder detects the position of ring plate by plc output speed signal corresponding to the servo system to achieve the spinning electronic forming.
5, Conclusion <br