SU1285369A1 - Device for monitoring stiffness of material being wound - Google Patents

Description

tc

00 SP

00

12 P JS

112

The invention relates to the textile industry, and more specifically to means of controlling the rigidity of textile materials when they are wound.

The purpose of the invention is to increase the accuracy of control by taking into account the speed and thickness of the material being wound.

The drawing shows a block diagram of the device.

The device consists of block 1 for calculating the tangential elasticity of the package, sensor 2 for the package radius, unit 3 for calculating the rigidity of filling the material, sensor 4 for compactness of the package, recorder 5, and calculator 6 for the stiffness of the material being wound, sensors 7 and 8 for the movement speed and thickness of the material and block 9 determine the stiffness of drive gears.

The block contains a quad 10, a functional converter 11 connected to the corresponding input of a division block 12, a functional converter 13, multiplication blocks 14 and 15, a division block 16, an integrator 17, a multiplication block 18, a functional converter 19 and a multiplication block 20.

The outputs of blocks 3, 18 and 9 through the calculator 6 are connected to the inputs of the recorder 5 and the block 16 divisions. The inputs of block 3 are connected to the outputs of sensors 7 and 2, the outputs of sensor 2 through quad torus iO are connected to the inputs of converter 11 and multiplication unit 18, and through converter 13 to the input of block 12. Sensor outputs 7 and block 12 are connected to block 14 the input of the multiplication unit 15., the other input of which is connected to the output of the multiplication unit 20, and the output is connected with the corresponding input of the division unit 16. the stroke of the block 16 through the integrator 17 is connected to the input of the multiplication unit 18; Sensor 4 is connected via a converter 19 to one input of the unit 20, the other input of which is connected to the output of the sensor 8..

The device works as follows.

Sensor output 2 and 7

arrive at the input of block 3, in which 55 pass through converters 11, 13

Cg is calculated - stiffness 19 and entering the corresponding

refueling material. Dependence inter-inputs of blocks multiplying, dividing and

Up to the twisting angle f and the radius of the integrator 17, it is processed in the packing with the corresponding expression (4). At vf M f dr J

(one)

where is the torque; F - twisting force; b is the width of the package; G - material shear modulus

packages;

Gd - the radius of the mandrel. The transition from integration over r to integration over time t and taking into account that 7 () hVdt,

about ,

where h is the current value of the thickness of one coil of material and package; V - material movement speed

Wdt

2tr we get

M (hVdt

  .

(2)

7 I ГГГТОг believed in the general case (d).

By definition, the tangential elasticity of a package is

ff dF

Considering that, we get

Thickness (k), where K is compactness, h is the thickness of the material being wound. It was experimentally proved that f (k) is close to a hyperbola.

On the other hand, G ctKC / ,, where ei is the coefficient of proportionality, and C. is the rigidity of the material being wound.

With that said, we have

lb

r hMF (K) Vdt r h;, F (K) odt 2 ;; ТТгТс г 4ы7

ffKl °

where F (K) for this device is C,

(five)

defined by the expression

CM T- -f,

  at

Cjr с, where Сд - stiffness of drive gears

Information from the output of sensor 2, after passing through the square 10. is fed to the input of block 18 (we have g). Information from the outputs of sensors 2, 4 and 7,

during block 18, the signal is proportional to the current value calculated by expression (4).

The calculation of C is performed in calculator 6 in accordance with expression (5). The value of C is recorded in the registrar 6.

Claims (2)

Invention Formula 2. The device according to p. I, about tl and the fact that the calculating unit of the package elasticity of the package consists of a quad, functional transducers, division and multiplication units and an integrator, while the output of the package radius sensor is connected With the inputs of the quad and the first functional square transforming the bodies, the output of the quad is connected to 1. A device for monitoring the stiffness of the winding material, containing a package radius sensor, output -Connected to the first input of the tangential elas-calculator; 5; the first input of the first package multiplicity, the second input of the junction and the second functional Converter - with the first input of the first division block, the second input a package with the output of the compactness sensor and the output of the computer connected to the first input of which is connected to the output of the first of the wound material, the second functional transducer, and The entrance is connected with the output of the block for calculating the rigidity of filling the material, and the output is connected with the recorder, while the output of the package radius sensor is connected with the first input of the block for calculating the rigidity of filling the material, characterized in that, of the material being wound and the drive gear stiffness, it is equipped with the sensors of the movement speed and material thickness and the unit for determining the stiffness of the drive gears, and the output of the speed sensor of the Material is nen to a second input of the calculating stiffness filling material and to a third input of the calculating tangential elasticity package, the fourth input of which is connected to sensor k v1hodu thicker) material and a fifth - to the output of the hardness calculator of the wrapped material, the third input of which is connected to the output of the drive stiffness determination unit. 2. The device according to p. I, about tl and - the fact that the computation module taiga1Dialnogo elasticity package consists of a quad, functional transducers, division and multiplication units and an integrator, while the output of the package radius sensor is connected With the inputs of the quad and the first functional transform bodies, the output of the quad is connected to 5; the first input of the first block is multiplied and through the second functional which is connected to the output of the first the output is with the first input of the second multiplication unit, the second input of the material speed sensor connected to the output, and the output with the SIM input of the third multiplication unit, with the output of the compactness sensor of the package through the third functional converter connected to the first input of the fourth uoisation unit, the second input of the material thickness gauge connected with the output and the output with the second input of the third multiplication unit, the output of which is connected to the first input of the second dividing unit, the second input of the coiled material stiffness associated with the output, and the output through the integrator the second input of the first multiplication unit, the output connected to the first input of the hardness calculator of the material being wound.