SU1440972A1 - Apparatus for monitoring the process of winding continuous material into package - Google Patents

Abstract

The invention relates to automatic devices for controlling the winding process of lengthy material and can be used in weaving preparation departments on warping machines. The aim of the invention is to improve the accuracy of control when winding packages of non-standard

Description

The invention relates to automatic devices for controlling the winding process of lengthy material and can be used in weaving preparation sections on warping machines.

The aim of the invention is to improve the accuracy of control when winding packages of irregular shape.

The drawing shows a block diagram of the device.

The device contains a pulse converter 1 for moving the base (material) 2 wound on a warping roller 3 (package), a pulse counter 4, the input of which is connected to the pulse converter 1 for moving the base, and the output is connected to the first input of the comparator 5, the length setting device 6 connected to the second input to the mapatopa 5, reset circuit 7, the output of which is connected to the reset input of the counter 4 pulses, and the input connected to the output of the comparator 5, buffer registers 8 and 9, block 10 in the winding parameters, pulse counter 11 , generator 12 etal pulses, information reading control unit 13 and block 14 sampling unit angle 14.

The information reading control unit 13 includes a JK-trigger 15, a driver of 16 pulses, a counting

trigger 17 and driver 18 pulses.

The package rotation angle sampling unit 14 includes a pulse rotation converter 19 of the package rotation angle, a frequency division unit 20 and a division factor set 21. The first and second inputs of the frequency dividing unit 20 are connected to the outputs of the pulse angle converter 19, respectively, of the angle of rotation of the package and the setting unit 21 of the division factor. The output of the generator 12 reference pulses is associated with the counting input of the JK-flip-flop 15 and with the counting input of the counter 11 pulses. The outputs of the buffer registers 8 and 9 are connected to the corresponding information inputs of the winding parameter calculation unit 10, whose input has been connected to the output of the G-flip-flop 15, the input of the pulse driver 16 and the enabling inputs of the buffer registers B and 9. The output of the frequency division unit 20 is connected to the counting the input of the counting trigger 17 and the K-inputs of the JK-trigger 15. The output of the imaging unit 18 pulses is connected to the counting input of the counter 11 pulses. The output of the pulse driver 16 is associated with the R-input of the counting trigger 17, the spin of which is connected to the input of the pulse driver 18 and the J-input of the JK-trigger 15.

314

The device works as follows.

In advance, they give a measurement base in the form of a fixed angle of rotation of the package in the range. From Zil radians to the limiting angle of rotation (f g, and during regular winding the boundary angle tf 1 is taken to be

gr 21Г (1)

N

where N is the number of reels in the rate; H is the length of the generatrix of the warp

roller

O - linear layout density

main threads (1 m). The measurement base is set in block 14 of the discretization of the rotation angle of the package (warp roller) by setting the frequency division factor K of the unit setting 21 of the division factor:

TO

where q) 5d is the basic measurement angle; - quantization step of the package rotation angle.

During rotation of the warp package at the output of the pulse converter 19 of the angle of rotation of the package, a sequence of pulses is formed, which arrive at the input of the frequency division unit 20, and a pulse is formed at its output along the decay of each K-th input pulse.

Thus, at the output of the package angle sampling unit 14, a sequence of pulses is formed, each of which occurs at the time of the package rotation by an angle equal to the measurement base.

In the initial state, the counters 4 and 11 pulses are reset to zero, the information inputs and outputs of the buffer registers 8 and 9 are in the high impedance state.

During the operation of the warping machine, the movement of the warp 2, which is wound on the warping roller 3, leads to the appearance at the output of the pulse converter 1 of moving the warp of the pulse sequence, which are continuously counted by the pulse counter 4, and the code K generated at its output goes to the information input of the buffer register eight.

0

five

0

0

The counting input of the pulse counter 11 receives a sequence of pulses from the generator output of 12 reference pulses, which is started when the machine is started and turned off when the machine is stopped based on a signal from the control unit (not shown) of the warmer.

When the pulse information information is received at the second input of the control unit 13 by reading out the code of the sampling angle block 14, the counter trigger 17 is switched and its output is set to 4tl

with signal with level

and 4 tt

, wherein

Level 1 is set at the inputs J and K of the trigger 15. At the moment when the first front of the read information control unit receives the falling front of the next pulse. From the generator output 12 of the reference pulses, the JK trigger 15 switches to the first output of the block 13 control of reading information, a signal with level 1 appears, which then goes on to enable the inputs of the buffer registers 8 and 9 and to the input of the interrupt unit of the calculation unit Yu, while reading the K codes,

and K. from the outputs of counters 4 and 11

h; them

pulses. On the decline of the follower and generator of the 12 reference pulses, the JK-flip-flop 15 overlaps, and a signal with a level O appears at its output and at the first output of the information read control unit 13.

The decline of the pulse at the first output of the control information reading unit 13 reads the codes K. and KT-. stops, and the driver 16 of the pulse generates a signal that is fed to the reset input of the counting trigger 17, switching the latter to the output, while

condition O

0

five

pulse generator 18 at the back of the signal at the output of counting trigger 17 generates a pulse reset pulse counter 11, which is zeroed, and the pulse counting cycle of the pulse generator of 12 reference pulses begins.

Thus, reading codes K. and. occurs cyclically at each turn of the warp roll; base angle, with the read interval always equal to the period

1D40972

following the generator pulses 12 reference and myco. Since the frequency of the generator 12 reference pulses is always higher than the pulse repetition frequency of the base-displacement transducer 1 and the package rotation sampling unit 14, the described control algorithm provides minimal information loss.

The calculation of the current winding length L in the block 10 for calculating the winding parameters is calculated by the formula

6

ggj

2-

where b is the perimeter of the warp shaft. Thus, the volume of the winding body is determined by the formula

V; Nb (A2 - DI,

and in block 10 of the winding parameters calculation, the winding density Vj is calculated by the formula

L;

TO,

(L where Aj is the quantization step of the linear

moving the base. The control length is determined by

one; L; - L

one-

and by

one; ,

- W.)

L,. |

The duration T of the control dlny is defined as

t;

one

TO,

and, accordingly, the linear warping rate is calculated by the formula

bu

 to

l ;-(

Kg;

u. f

g

where f J. is the pulse repetition rate of the generator 12 reference pulses.

The jf-winding density is determined by the mass ratio M | body winding to his. volume

V, m;

yy, - vT

moreover, the mass is defined as M; N-T-L ;,

where T is the linear density of the filaments new (tex),

and the volume is determined by the square of the load L of the current control length 1; to initial control length

(KL; - KU.-M)

/ F

J-0

H

the initial control length is determined by the length of the arc of the circumference of the warp shaft at the base angle of the package

KI;

(KU; - K

L; -I

Kl

- one

Where

20

47-N-T: A (H-b

five

five

0

five

0

five

If the ratio of the limiting angle of rotation to the received base of measurement

Oh gr

Z

5 3

PK-5 then the winding density is determined as a recurrent average of a series of current values of the winding density and calculated in block 10 using the 0 formula

V -1 V V

a- 2.2 flj

i-z

During the operation of the warping machine, the comparator 5 continuously compares the number of pulses counted by the counter of 4 pulses with the number pre-set in unit 5 of the base length. At the moment when the predetermined length of the base 2 is accumulated, these numbers are compared and at the output of the comparator 5 a signal appears that goes to the control unit (not shown) of the warping machine to stop it. The cycle of formation of the warp, roller 3 ends.

In the cycle of forming the warp roller 3, operatively calculated current values of the parameters of the warping process are given to the indication for production personnel and transferred to the upper level of the process control system, and can also be used to form and correct control actions on the actuators of the local regulators of the warping machine ( for example, regulators of warp speed, yarn tension, winding density). The ratio To the current and initial control lengths can be used to correct the starting and stopping modes of the warping machine by taking into account the increment of the moment of inertia of the winding body in the warping roller formation cycle.

Claims (3)

1. A device for controlling the process of winding a long material into a package containing a pulse converter for moving material connected to the counter input of the pulses, the reset input of which is connected to the comparator output through a reset circuit, and the output connected to the first comparator input to the second input of which is connected unit length, pulse shapers and parameter calculation unit on cht b, in order to increase the accuracy of control when winding packages of irregular shape, it is equipped with a package rotation sampling unit, a control unit for reading information, a generator of reference pulses, buffer registers and an additional pulse counter; the reference pulse generator's stroke is connected with the first input of the information read control block and the counting input of the additional pulse counter, the outputs of the buffer registers are connected to the corresponding information inputs of the winding parameters calculation block, the first output of the information read control block is connected with the enable inputs of the buffer registers and the interrupt input of the block calculation of the winding parameters, with the second input of the control unit reading the information The output is connected to the reset input of an additional 1-pulse counter, the output of which is connected to the information input of the second buffer register, g the output of the pulse counter is connected to the information input of the first buffer register. 2. A device according to Claim 1, characterized in that the package rotation discretization unit consists of a pulsed rotation angle converter of the package, a frequency division unit and a dividing ratio setting device, the first and second inputs of the frequency division unit being connected to the outputs of the angle rotation converter and unit of the division factor, and its output is the output of the package rotation sampling unit. 3. A device according to claim 1, characterized in that the information reading control unit includes a counting trigger, a JK trigger and pulse shapers, the counting input of the JK trigger is the first input of the information read control block, the counting input of the counting trigger is the second input information read control unit and connected to the K-input of the JK-flip-flop, the output of which is the first output of the information-read control unit and connected via the first pulse shaper to the reset input of the counting flip-flop , the input of the second pulse generator is connected with the output of the counting trigger and the J input of the JK flip-flop, and its output is the second output of the read control and formation control unit.