CN104495473A - Machine large package tension control system - Google Patents

Abstract

The invention relates to the technical field of textile machinery control, in particular to a machine large package tension control system comprising a tension sensor used for detecting the textile tension in real time when the textile is coiled through a coiling roller. The tension sensor converts the detected textile tension into an analog signal and transmits to a controller through a moving average filter, and the controller adjusts the rotating torques of a coiling roller, main coiling roller and auxiliary coiling roller according to the coiling diameter of the coiling roller and adjusts the tension value to a set value in real time. In the coiling process of the coiling roller, the coiling diameter is increased, the corresponded torque compensation is performed in different operation processes, different torque compensations are performed during the start moment, acceleration, deceleration and stopping, different torque compensations are performed according to different coiling diameters, the unstable tension is avoided, and the whole coiling process can be stable.

Description

The outer large package tension control system of machine

Technical field

The present invention relates to textile machine control technology field, be specifically related to the outer large package tension control system of a kind of machine.

Background technology

Tension force is most important in textile industry, the tension force of cloth cover directly has influence on the quality of cloth, overtension can cause cloth facial disfigurement, door width to shrink, the too little meeting of tension force causes cloth cover wrinkling, unsightly, rolling is in textile industry, last procedure from raw material to finished product, hold this last pass together, also more and more higher to the requirement of wrap-up.

General wrap-up, only have simple friction or center winding, coil diameter requires to be no more than 50CM, to tension force control less demanding, when fabric coil diameter reaches 100CM even more than 100CM, and during the product that rolling hardness degree concordant with trimming is had high requirements, just quite harsh to tension force control overflow.

Summary of the invention

For the problems referred to above, the object of this invention is to provide the outer large package tension control system of a kind of machine, it can in wrapup procedure, coil diameter with rolling is ascending, wind-up roll difference volume through time carry out different torque and compensate, would not occur that tension force is suddenly big or suddenly small like this, the whole process of rolling can be made very stable.

Realize technical scheme of the present invention as follows:

The outer large package tension control system of machine, comprise the wind-up roll by center motor-driven rotation, fabric being carried out to rolling, the rolling home roll of the cooperation and wind-up roll rolls by home roll motor-driven rotation, rotation is driven and the auxiliary roller of rolling coordinated that rolls with wind-up roll by auxiliary roller motor, and for promoting the lift system of wind-up roll up-and-down movement, wherein, gear transmission is adopted between motor roller corresponding thereto;

Also comprise the tension pick-up for detecting fabric tension in wind-up roll rolling fabric process in real time, tension pick-up will detect that the tension force of fabric is converted into analog signals and is transferred to a controller through mobile mean filter, the tension value of the real-time strain value received and setting compares by this controller, if tension value has deviation, controller then adjusts the driving torque of wind-up roll, rolling home roll, the auxiliary roller of rolling according to wind-up roll coil diameter, real-time strain value is adjusted to setting value.

Have employed such scheme, wind-up roll carries out rolling to fabric, and in wrapup procedure, along with the coil diameter of wind-up roll increases, lift system constantly promotes wind-up roll; Tension pick-up detects in real time to the fabric in wrapup procedure, and the real-time strain value of detection is transferred to controller, compare with the tension value arranged in the controller, if there is deviation between real-time strain value and setting tension value, controller then adjusts the driving torque of wind-up roll, rolling home roll, the auxiliary roller of rolling according to wind-up roll coil diameter, real-time strain value is adjusted to setting value.In the wrapup procedure of wind-up roll, the ascending change of coil diameter of rolling, in order to the tension force ensureing identical tension or diminish a little, require the output torque also ascending change of home roll motor, simultaneously in different operating process, corresponding torque compensation be carried out, carry out different torques when the moment namely started, acceleration, deceleration, parking to compensate, carry out different torques to compensate when different coil diameter, would not occur that tension force is suddenly big or suddenly small like this, the whole process of rolling can be made very stable.

Further, the coil diameter of described wind-up roll is calculated according to under type by controller:

Wind-up roll rotates a circle can produce an impulse singla to controller, and in the circle that wind-up roll rotates, the pulse count being used as to produce the metering coder that wind-up roll rolling fabric length carries out metering is P; The individual pen pulse count of metering coder own rotation is P1, and the metering pressure roller girth be coaxially connected with metering coder is C, then coil diameter D1=C × (the P/P1)/π of wind-up roll.

Further, the coil diameter of described wind-up roll is calculated according to under type by controller:

When initial condition, the wind-up roll center of circle is equal to the distance in the rolling home roll center of circle and the rolling auxiliary roller center of circle, the rolling home roll center of circle is denoted as L to the distance of center-point between rolling home roll and the auxiliary roller of rolling, the radius of rolling home roll is denoted as R, the initial coil diameter of wind-up roll is denoted as r1, the wind-up roll center of circle is denoted as a to the distance of center-point between rolling home roll and the auxiliary roller of rolling, can be obtained by Pythagorean theorem:

Lift system the hoisting depth of wind-up roll is denoted as y1, y2 ... yn, can draw promote after corresponding wind-up roll coil diameter r2, r3 ... rn,

$r2=\sqrt{{(a+y1)}^2+L^2}-R,$

$r3=\sqrt{{(a+y2)}^2+L^2}-R,$

……

$\mathrm{rn}=\sqrt{{(a+\mathrm{yn})}^2+L^2}-R,$

The coil diameter of wind-up roll $D2=2\×\mathrm{rn}=2\×(\sqrt{{(a+\mathrm{yn})}^2+L^2}-R).$

Accurate in order to the wind-up roll coil diameter that ensures to calculate, can calculate the mean number of D1, D2, i.e. coil diameter D=(D1+D2)/2 by controller.

Further, described tension pick-up is the tension pick-up of 0-300kg, the analog voltage of corresponding 0-10V.

Accompanying drawing explanation

Fig. 1 is the rolling schematic diagram of the outer large package of machine of the present invention;

Fig. 2 is the functional block diagram of control system of the present invention;

Fig. 3 is roll diameter compute schematic diagram in the present invention.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is further described.

As Fig. 1, 2, the outer large package tension control system of machine, comprise and drive by middle electrocardiograph 1 wind-up roll 3 rotating and fabric 2 is carried out to rolling, driven by home roll motor 4 and rotate the rolling home roll 5 coordinated and wind-up roll rolls, rotation is driven and the auxiliary roller 7 of rolling coordinated that rolls with wind-up roll by auxiliary roller motor 6, and for promoting the lift system of wind-up roll up-and-down movement, the support for supporting wind-up roll that lift system can adopt lifting motor and be promoted by lifting motor, lift system can rotate the number of turns according to its lifting motor to the hoisting depth of wind-up roll to be known, this technology those skilled in the art can realize, certainly can also adopt the lift system of other structures in concrete enforcement, wherein, middle electrocardiograph, home roll motor, between auxiliary roller motor with roller corresponding separately, adopt gear transmission.

Also comprise the tension pick-up 8 for detecting fabric tension in wind-up roll rolling fabric process in real time, tension pick-up will detect that the tension force of fabric is converted into analog signals and is transferred to a controller 9 through mobile mean filter, controller adopts the tension force of PID mode to tension pick-up to regulate, the tension value of the real-time strain value received and setting compares by this controller, if tension value has deviation, controller then adjusts the driving torque of wind-up roll, rolling home roll, the auxiliary roller of rolling according to wind-up roll coil diameter, real-time strain value is adjusted to setting value.

In center winding, middle electrocardiograph needs to perform according to gear ratio and coil diameter to export great moment of torsion and speed, gear ratio is known, coil diameter has little of large real-time change, the real-time update function of coil diameter must be realized in system, like this, the moment of torsion of middle electrocardiograph and speed tension of engagement change could make correct adjustment.Adopt two kinds of methods to obtain coil diameter size in native system, controller is to after two result treatment, and get the effective value of aviation value as instantaneous coil diameter of two kinds of results, middle electrocardiograph, according to instantaneous coil diameter and gear ratio, performs corresponding moment of torsion and speed.

The coil diameter of wind-up roll is calculated according to following a kind of mode by controller:

Wind-up roll rotates a circle can produce an impulse singla to controller, and in the circle that wind-up roll rotates, the pulse count being used as to produce the metering coder that wind-up roll rolling fabric length carries out metering is P; The individual pen pulse count of metering coder own rotation is P1, and the metering pressure roller girth be coaxially connected with metering coder is C, then coil diameter D1=C × (the P/P1)/π of wind-up roll.

See Fig. 3, the coil diameter of wind-up roll is also calculated according to following another kind of mode by controller:

When initial condition, the wind-up roll center of circle is equal to the distance in the rolling home roll center of circle and the rolling auxiliary roller center of circle, the rolling home roll center of circle is denoted as L to the distance of center-point between rolling home roll and the auxiliary roller of rolling, the radius of rolling home roll is denoted as R, the initial coil diameter of wind-up roll is denoted as r1, the wind-up roll center of circle is denoted as a to the distance of center-point between rolling home roll and the auxiliary roller of rolling, can be obtained by Pythagorean theorem:

Lift system the hoisting depth of wind-up roll is denoted as y1, y2 ... yn, can draw promote after corresponding wind-up roll coil diameter r2, r3 ... rn,

$r2=\sqrt{{(a+y1)}^2+L^2}-R,$

$r3=\sqrt{{(a+y2)}^2+L^2}-R,$

……

$\mathrm{rn}=\sqrt{{(a+\mathrm{yn})}^2+L^2}-R,$

The coil diameter of wind-up roll $D2=2\×\mathrm{rn}=2\×(\sqrt{{(a+\mathrm{yn})}^2+L^2}-R).$

Accurate in order to the wind-up roll coil diameter that ensures to calculate, can calculate the mean number of D1, D2, i.e. coil diameter D=(D1+D2)/2 by controller.

Carry out checking below in conjunction with concrete data to two kinds of account forms in the present invention to illustrate:

According to the first algorithm, wind-up roll rotates the pulse count P=3792 that a circle metering coder produces under the drive of middle electrocardiograph, and namely wind-up roll rotates the pulse count of a circle and the generation of rolling fabric length; The pulse count P1=1024 that metering coder own rotation one circle produces, with the metering pressure roller girth C=191.7mm of metering coder coaxial rotation; Then coil diameter D1=C × (P/P1)/π=191.7 × (the 3792/1024)/3.1415=225.9mm of now wind-up roll.

According to second algorithm, a=140mm, yn=60mm, L=200mm, R=170mm,

$r=\sqrt{{(140+60)}^2+{200}^2}-170=112.8$ D2＝2×r＝225.6mm。

Final coil diameter D=(D1+D2)/2=(225.9+225.6)/2=225.75 is drawn according to two kinds of algorithms.

This tension control system is made up of control unit controller, performance element center winding motor, main friction winding motor, auxiliary friction winding motor and feedback unit tension pick-up, controls to carry out closed-loop vector control tension force.In wrapup procedure, the ascending change of coil diameter of rolling, in order to the tension force ensureing identical tension or diminish a little, requires the output torque also ascending change of motor.Simultaneously in different operating process, carry out corresponding torque compensation, carry out different torque when the moment namely started, acceleration, deceleration, parking and compensate, difference volume through time carry out different torques and compensate, would not occur that tension force is suddenly big or suddenly small like this, the whole process of rolling can be made very stable.

The tension force of native system controls to be different from the tension system formed by general front and back velocity contrast, but by tension pick-up, the PID of tension force is regulated, the analog voltage of the corresponding 0-10V of tension pick-up 0-300kg, the size of system simulation amount load module Real-time Obtaining tension force, controller compares the preset value of tension force in mobile mean filter and system obtained, as found that there is deviation, controller is by EthernetPower Link bus communication at a high speed, center winding, main friction rolling, auxiliary friction rolling is according to the mutual coordination of deviation, center winding is according to wind-up roll coil diameter and gear ratio, main friction rolling and auxiliary friction rolling and export corresponding moment of torsion according to gear ratio and friction roller diameter, fast real-time tension adjustment to predetermined value.

Claims (4)

1. the outer large package tension control system of machine, it is characterized in that: comprise the wind-up roll by center motor-driven rotation, fabric being carried out to rolling, the rolling home roll of the cooperation and wind-up roll rolls by home roll motor-driven rotation, rotation is driven and the auxiliary roller of rolling coordinated that rolls with wind-up roll by auxiliary roller motor, and for promoting the lift system of wind-up roll up-and-down movement, wherein, gear transmission is adopted between motor roller corresponding thereto;

Also comprise the tension pick-up for detecting fabric tension in wind-up roll rolling fabric process in real time, tension pick-up will detect that the tension force of fabric is converted into analog signals and is transferred to a controller through mobile mean filter, the tension value of the real-time strain value received and setting compares by this controller, if tension value has deviation, controller then adjusts the driving torque of wind-up roll, rolling home roll, the auxiliary roller of rolling according to wind-up roll coil diameter, real-time strain value is adjusted to setting value.

2. the outer large package tension control system of machine according to claim 1, it is characterized in that, the coil diameter of described wind-up roll is calculated according to under type by controller:

Wind-up roll rotates a circle can produce an impulse singla to controller, and in the circle that wind-up roll rotates, the pulse count being used as to produce the metering coder that wind-up roll rolling fabric length carries out metering is P; The individual pen pulse count of metering coder own rotation is P1, and the metering pressure roller girth be coaxially connected with metering coder is C, then coil diameter D1=C × (the P/P1)/π of wind-up roll.

3. the outer large package tension control system of machine according to claim 1 and 2, it is characterized in that, the coil diameter of described wind-up roll is calculated according to under type by controller:

When initial condition, the wind-up roll center of circle is equal to the distance in the rolling home roll center of circle and the rolling auxiliary roller center of circle, the rolling home roll center of circle is denoted as L to the distance of center-point between rolling home roll and the auxiliary roller of rolling, the radius of rolling home roll is denoted as R, the initial coil diameter of wind-up roll is denoted as r1, the wind-up roll center of circle is denoted as a to the distance of center-point between rolling home roll and the auxiliary roller of rolling, can be obtained by Pythagorean theorem:

Lift system the hoisting depth of wind-up roll is denoted as y1, y2 ... yn, can draw promote after corresponding wind-up roll coil diameter r2, r3 ... rn,

$r2=\sqrt{{(a+y1)}^2+L^2}-R,$

$r3=\sqrt{{(a+y2)}^2+L^2}-R,$

……

$\mathrm{rn}=\sqrt{{(a+\mathrm{yn})}^2+L^2}-R,$

The coil diameter of wind-up roll $D2=2\×\mathrm{rn}=2\×(\sqrt{{(a+\mathrm{yn})}^2+L^2}-R).$

4. the outer large package tension control system of machine according to claim 1, it is characterized in that, described tension pick-up is the tension pick-up of 0-300kg, the analog voltage of corresponding 0-10V.