SU691223A1 - Tension control device of a reeler in a small-section mill - Google Patents

Description

one

A device for adjusting tension on a coiler relates to the field of metal forming, in particular, can be used in the manufacture of wire.

A device for adjusting tension on a coiler is known, which contains a tension sensor and special contours of tension control ij. The presence of these elements leads to a condition of the device and a decrease in the accuracy of adjustment,

It is also known to adjust the njis tensioning device. On the coiler, there is a winder drive motor that is driven by a converter with a series-connected current controller, a speed controller, and a current limiting winding cell during winding of the last mill stand, a reference voltage source of mill 2

This device has a very tight tension control system that does not provide the required accuracy in maintaining tension when the rolling speed is changed.

The aim of the invention is to increase the accuracy of adjustments to the tension.

This goal is achieved by the fact that the device is equipped with a unit for obtaining a derivative of speed and a programmable multivibrator, the output of which is connected to the input of a current limiting unit at Winding, the input is connected with the output of the unit for obtaining a derivative of

 discrete automatic systems

 controls, V5dsod kotbryugyu podklIochek k k incrementalnogo speed sensor after the stand of the mill ... The drawing shows a block diagram

devices for adjusting tension; n.a.

The device contains a motor 1, driving a drum 2 of a winder and connecting to the output of a controlled converter 3, the control system of which consists of a current regulator 4, a speed regulator 5 and a current limiting unit 6 during winding. A source 7 of the reference mill voltage is connected to the input of the speed controller. The input of the coil current limiting unit is connected to the output of a programmable multivibrator 8, the input of which is connected to the output of unit 9 to derive a derivative in discrete automatic control systems, the input of which is connected to the output of the incremental speed sensor 10 of the last stand of wall 11 located on the shaft of the program engine 12 nourishing. Hg converter. 13 with a control system, the output of which is also connected to the source output; ka 7: This is the tension of the mill. On: in: 5: 6d source. reference chip / p groom; The mill voltage is applied to the rolling speed of the hue. ;.:; ; -; : V The device works as follows. ,;.: - / V, - :: v. ;.,; - .., -.; / ..; h--; ;:. ,, 11, changing the speed of the last cnististaia in the Qucccc winding, it will change the percentage of% of the pulleys co-in. Output. ikrShertalnogo.Datdaa, .10, mounted on the engine shaft .T1l the next stand. This is a change in the fsssier block to produce a derivative. in: dis1 retni1: X these things. ema aetol atychoj synapse.B.JieHira: H in the case of a positive meaning and, N-.,. -:, - ..; :. , at the output of the unit to receive. a .h. :-......- .four . ..-.-:., .--. -: about a one-way bioframe in individual categories of temahs, bu.det k.od, v, ate, “a man; who is propped it and the magnitude of the prow, one of the speed of the last stand ... ./-..-. ../ G.: ... Programm1fu1g11gl aaaaaaaaaatoyr at the input KbTOporpi pos / tuples the code from the output of the block; a: 9 received one prism from one into dib crete, these topics convert it: to HW pulse, the duration of which is also the right, the command propoion; al. Magnitude on the pattern 11r. devices. to take the derivative after each c-cycla differential-i. Impulse output-P13ogrammyraemym multichibrator 8 ,. arriving at the control input of the current limiting unit 6 during winding turns it off from the speed controller 5 of the drive control system, the winder, thereby closing the speed control system. The speed of the winder motor increases to the initial winding speed. The acceleration time, and thus the magnitude of the drive speed of the winder, depends on the pulse duration of the programmable multivibrator 8. At the end of the pulse, the current limiting unit 6 during winding is again connected to the speed regulator 5 and the winder control system again starts to maintain the current constant load. Thus, every time the speed of rotation of the last stand increases (i.e., the winding up), the reel is subdivided to select this slack and to restore the former tension, and the substructure is directly proportional to the derivative of the speed of the next. ... This device differs favorably from those known in that its execution is simplified, and the accuracy of adjustment is enhanced by the use of discrete methods. ... . The use of this device will allow 1. to increase the accuracy of regulation and reduce the time of transition processes, which will lead to an increase in grade -proKat and improve its homogeneity along the entire length of the riot. F o rm y l. Inventions. A device for adjusting the tensioning pulley of a small-section mill containing the drive motor of the drum. Utility of the converter With a series of connected topoN current regulators, a speed regulator and a coil current limiting unit during winding, an incremental speed sensor of the last mill stand, a reference source, a mill voltage, which is so that, in order to increase the accuracy of the regulation of tension, it is equipped with a unit for obtaining the derivative of the speed and a graphical multivibrator, the output of which is connected to the input of the current limit during winding,. the input is connected with the output of the unit for the derivative in discrete automatic control systems, the input of which is connected to an experimental speed sensor on the last stand of the mill. Sources of information taken into account during the examination. 1, USSR Author's Certificate No. 463491, cl. B 21 C 47/00, 1973. 2. USSR author's certificate No. 463492, cl. B 21- C 47/00, 1973 (prototype).

691223