CN102556766B - Tension control device - Google Patents

Abstract

The invention relates to a tension control device, which comprises a control device, an unwinding roll, a winding roll, a fastening slot, a tension roll and a roll diameter detecting device. The unwinding roll and the winding roll are respectively driven by a motor, and two ends of the tension roll are arranged in the fastening slot and capable of floating vertically. The control device comprises an information input unit, a data computing unit and an information output unit, wherein the data computing unit is used for integrating input roll diameter information of the unwinding roll and the winding roll and performing interpolation computing to rotating positions of motors when strip rolls of the unwinding roll and the winding roll are wound by the distance L each time to guarantee winding linear speed to be identical. The control device is respectively connected with an unwinding roll motor and a winding roll motor electrically, the roll diameter detecting device is connected with the control device electrically, and the strip rolls wound on the unwinding roll are wound on the winding roll through the tension roll. The tension control device has the advantages of simplicity in control manner, easiness in realizing, high control accuracy and fine system running stability.

Description

A kind of tenslator

Technical field

The present invention relates to the control technology field, particularly relate to a kind of control setup of tension force.

Background technology

Tension force control is widely used in the production reality of all trades and professions, generally adopts in the prior art:

1, DC control (DC speed regulation, DC injection braking), characteristics are to come adjustment of tonicity output by the braking amount that adjusting unreels motor.Shortcoming is that direct current mechanical drive net synchronization capability is undesirable, can't realize permanent linear speed, permanent tension force, and is especially outstanding to the large package situation.

2, fluid control (Hydraulic Station, flow proportion valve), characteristics are to come adjustment of tonicity output by the flow proportion valve that adjusting unreels motor.Existing problems one are homemade hydraulic part sealing property, poor reliability.The 2nd, though the reliable in quality of import, price height, spare part difficulty.

3, variable frequency control, service precision is higher, but it is speed control, the variable factor of considering is more, especially in the acceleration and deceleration operational process owing to increased physical quantitys such as angular acceleration, inertia, and be nonlinearities change, increased the control difficulty of system, need monitor in real time system's acceleration and moderating process, the revised theory parameter just can be implemented in the interior permanent tension force of error limit through test of many times.

4, each tension force control at present mostly is let off roll and wind-up roll and is all cylindrically, can not tackle multiple situation in the practical application, and certain limitation is arranged.

Summary of the invention

For overcoming the above problems, the invention provides a kind of tenslator,

Described tenslator comprises:

Control setup, let off roll, wind-up roll, draw-in groove, jockey pulley, coil diameter detecting device;

Described coil diameter detecting device is used for the detection to let off roll and/or wind-up roll coil diameter;

Described let off roll and wind-up roll are by the difference motor-driven, and described jockey pulley two ends are positioned at draw-in groove and can fluctuate;

Described control setup comprises:

Information input unit is used for the required computing information of input;

The data computation unit, the let off roll and the wind-up roll coil diameter information that are used for comprehensive input are carried out interpolation operation to let off roll and wind-up roll roll coil of strip winding L apart from position and winding wrap wire speed that motor rotates, unreel consistent with the rolling linear velocity in the winding process;

Information output unit is exported to let off roll motor and wind-up roll motor respectively for the location information of the data computation unit being carried out the rotation of interpolation operation gained motor;

Described control setup is electrically connected with let off roll motor and wind-up roll motor respectively, and described coil diameter detecting device is electrically connected with control setup, and the winding of twining on the let off roll is wound on the wind-up roll by jockey pulley.

Further described motor is servomotor or stepping motor.

Further described data computation unit can be motion control card or motion controller or interpolator or bus controller.

Further described tenslator also comprises position detecting device, is used for the position probing that fluctuates to jockey pulley; And be electrically connected with control setup, be used for giving control setup with the change in location message feedback; Wherein said position detecting device connects warning device, for output that unusual tension information is reported to the police.

Further described L value can be by the information input unit setting.

Further described let off roll is cylindrical, and wind-up roll is elliptical cylinder-shape or cylindrical.

Further described let off roll and wind-up roll motor also have coder, and be electrically connected with control setup, be used for the instant motor position of rotation that detects, and control setup is given in immediate feedback, should reach the position with described data computation unit by the rotation of interpolation operation transmission location information rear motor and compare analysis, thereby further adjust the motor rotary position information.

Further described tenslator can be integral structure or split-type structural.

The control method of described tenslator is:

The winding of twining on the let off roll is wrapped on the wind-up roll through jockey pulley, jockey pulley is positioned on the ribbon, information input unit receives the coil diameter data of let off roll and/or wind-up roll, send to the data computation unit, the data computation unit draws the position of the required rotation of belt length L motor that is fastened and sends to let off roll and wind-up roll motor respectively by information output unit by interpolation operation, controls the operation of two motors.

Wherein the coil diameter of let off roll and wind-up roll can draw by measurement and calculation mode, thereby realization tension force is accurately controlled.

The present invention also provides a kind of tension control method.

Described tension control method comprises the steps:

Step 1, winding unreel through let off roll, by jockey pulley, after be wound on the wind-up roll;

Step 2, obtain let off roll and the original coil diameter of wind-up roll;

Step 3, obtain time dependent instant coil diameter in let off roll and/or the wind-up roll winding winding process;

Input information in step 4, comprehensive step 2 and the step 3 is carried out interpolation operation, calculate respectively the every winding of winding L apart from the time let off roll and wind-up roll motor position of rotation and the linear velocity that unreels in the winding process with rolling is consistent; Export to let off roll motor and wind-up roll motor respectively by information output unit then;

Step 5, let off roll motor and wind-up roll motor turn round according to the information of exporting in the step 4.

Let off roll motor described in the further step 5 and wind-up roll motor are stepping motor and servomotor.

Let off roll described in the further step 2 is cylindrical, and wind-up roll is elliptical cylinder-shape.

Let off roll described in the further step 2 and wind-up roll all are cylindrical.

Time dependent instant coil diameter can measure respectively by position detecting device in let off roll described in the further step 3 and the wind-up roll winding winding process.

Interpolation operation described in the further step 4 is that interpolator carries out motor rotation required pulse calculating or bus controller carries out motor swing circle position calculation.

Original coil diameter and winding THICKNESS CALCULATION before time dependent instant coil diameter can begin to twine by known let off roll and wind-up roll in let off roll described in the further step 3 and the wind-up roll winding winding process are learnt.

Interpolation operation described in the further step 4 also comprises the comprehensive analyses of the jockey pulley change in location information of position detecting device feedback and deviation calculating; Wherein position detecting device is electrically connected with warning device, the alarm message when exportable tension force is unusual.

L value in the further described step 4 can arrange.

Interpolation operation described in the further step 4 comprises that also by coder the position probing data of let off roll and wind-up roll motor and former interpolation operation being sent the required position of location information rear motor compares.

Beneficial effect of the present invention is:

1, mode is simple, realizes easily the control accuracy height;

2, system's good operation stability.

Description of drawings

Fig. 1 is the structural representation of tenslator;

Fig. 2 is the draw-in groove structural representation.

Among the figure: 1, do not twine winding let off roll 2, be tied with the let off roll of winding

3, be not tied with winding wind-up roll 4, be tied with the wind-up roll of winding

5, jockey pulley 6, draw-in groove 7, position transduser 8, measurement of film reel diameter device

The specific embodiment

The control principle of tenslator and tension control method is as follows:

ω ₁The expression let off roll unreels the radian that L length motor turns over constantly;

ω ₂The radian that expression wind-up roll rolling constantly L length motor turns over;

P ₁The expression let off roll motor required pulse sum that sends that rotates a circle,

The expression let off roll unreels L apart from the required given pulse count of motor;

P ₂The expression wind-up roll motor required pulse sum that sends that rotates a circle,

The required given pulse count of expression wind-up roll rolling L distance;

L represents the distance that unreels set;

$\frac{{\mathrm{\ω}}_1}{2\mathrm{\π}}=\frac{P_1^{/}}{P_1}$

$\frac{{\mathrm{\ω}}_2}{2\mathrm{\π}}=\frac{P_2^{/}}{P_2}$

By following formula as can be known, in winding process, twine L distance time dependent radian separately as long as draw let off roll and wind-up roll, can draw let off roll and wind-up roll and twine L apart from the required pulse number of motor rotation.

And for circle and oval known L arc length, below corresponding angular relationship is:

Have for circle: L=ω R, R are radius of circle, and ω is radian

Have for ellipse:

If oval last 2 P (x ₁, y ₁) and Q (x ₂, y ₂) corresponding eccentric angle is respectively α, β, major axis is a, minor axis is b,

P point substitution elliptic equation is had: $\left\{\begin{array}{c}{x}_1=a\cos \mathrm{\α}\\ y_1=b\sin \mathrm{\α}\end{array}\right.$

So the eccentric angle that P is ordered is:

In like manner can obtain the eccentric angle that Q is ordered:

Character according to ellipse: a ²-b ²=c ²,

And the definition of oval eccentricity:

E is eccentricity

Can get:

$L_{\mathrm{PQ}}=a{\∫}_{\mathrm{\β}}^{\mathrm{\α}}\sqrt{1-e^2{\sin }^2\mathrm{\θ}}\mathrm{d\θ}=a{\∫}_{\arcsin \frac{X_2}{a}}^{\arcsin \frac{X_1}{a}}\sqrt{1-e^2{\sin }^2\mathrm{\θ}}\mathrm{d\θ}$

$=a[E(e,\arcsin \frac{X_1}{a})-E(e,\arcsin \frac{X_2}{a})]$

Known definite arc length can calculate circle and oval corresponding radian as can be known.

For overcoming the above problems, the invention provides a kind of tenslator,

Described tenslator comprises:

Control setup, let off roll, wind-up roll, draw-in groove, jockey pulley, coil diameter detecting device;

Described coil diameter detecting device is used for the detection to let off roll and/or wind-up roll coil diameter;

Described let off roll and wind-up roll are by the difference motor-driven, and described jockey pulley two ends are positioned at draw-in groove and can fluctuate;

Described control setup comprises:

Information input unit is used for the required computing information of input;

The data computation unit, the let off roll and the wind-up roll coil diameter information that are used for comprehensive input are carried out interpolation operation to let off roll and wind-up roll roll coil of strip winding L apart from position and winding wrap wire speed that motor rotates, unreel consistent with the rolling linear velocity in the winding process;

Information output unit is exported to let off roll motor and wind-up roll motor respectively for the location information of the data computation unit being carried out the rotation of interpolation operation gained motor;

Described control setup is electrically connected with let off roll motor and wind-up roll motor respectively, and described coil diameter detecting device is electrically connected with control setup, and the winding of twining on the let off roll is wound on the wind-up roll by jockey pulley.

Further described motor is servomotor or stepping motor.

Further described data computation unit can be motion control card or motion controller or interpolator or bus controller.

Further described tenslator also comprises position detecting device, is used for the position probing that fluctuates to jockey pulley; And be electrically connected with control setup, be used for giving control setup with the change in location message feedback; Wherein said position detecting device connects warning device, for output that unusual tension information is reported to the police.

Further described L value can be by the information input unit setting.

Further described let off roll is cylindrical, and wind-up roll is elliptical cylinder-shape or cylindrical.

Further described let off roll and wind-up roll motor also have coder, and be electrically connected with control setup, be used for the instant motor position of rotation that detects, and control setup is given in immediate feedback, should reach the position with described data computation unit by the rotation of interpolation operation transmission location information rear motor and compare analysis, thereby further adjust the motor rotary position information.

Further described tenslator can be integral structure or split-type structural.

The control method of described tenslator is:

The winding of twining on the let off roll is wrapped on the wind-up roll through jockey pulley, jockey pulley is positioned on the ribbon, information input unit receives the coil diameter data of let off roll and/or wind-up roll, send to the data computation unit, the data computation unit draws the position of the required rotation of belt length L motor that is fastened and sends to let off roll and wind-up roll motor respectively by information output unit by interpolation operation, controls the operation of two motors.

Wherein the coil diameter of let off roll and wind-up roll can draw by measurement and calculation mode, thereby realization tension force is accurately controlled.

The present invention also provides a kind of tension control method.

Described tension control method comprises the steps:

Step 1, winding unreel through let off roll, by jockey pulley, after be wound on the wind-up roll;

Step 2, obtain let off roll and the original coil diameter of wind-up roll;

Step 3, obtain time dependent instant coil diameter in let off roll and/or the wind-up roll winding winding process;

Input information in step 4, comprehensive step 2 and the step 3 is carried out interpolation operation, calculate respectively the every winding of winding L apart from the time let off roll and wind-up roll motor position of rotation and the linear velocity that unreels in the winding process with rolling is consistent; Export to let off roll motor and wind-up roll motor respectively by information output unit then;

Step 5, let off roll motor and wind-up roll motor turn round according to the information of exporting in the step 4.

Let off roll motor described in the further step 5 and wind-up roll motor are stepping motor and servomotor.

Let off roll described in the further step 2 is cylindrical, and wind-up roll is elliptical cylinder-shape.

Let off roll described in the further step 2 and wind-up roll all are cylindrical.

Time dependent instant coil diameter can measure respectively by position detecting device in let off roll described in the further step 3 and the wind-up roll winding winding process.

Interpolation operation described in the further step 4 is that interpolator carries out motor rotation required pulse calculating or bus controller carries out motor swing circle position calculation.

Original coil diameter and winding THICKNESS CALCULATION before time dependent instant coil diameter can begin to twine by known let off roll and wind-up roll in let off roll described in the further step 3 and the wind-up roll winding winding process are learnt.

Interpolation operation described in the further step 4 also comprises the comprehensive analyses of the jockey pulley change in location information of position detecting device feedback and deviation calculating; Wherein position detecting device is electrically connected with warning device, the alarm message when exportable tension force is unusual.

L value in the further described step 4 can arrange.

Interpolation operation described in the further step 4 comprises that also by coder the position probing data of let off roll and wind-up roll motor and former interpolation operation being sent the required position of location information rear motor compares.

Embodiment one

All be under the situation of cylinder at let off roll and wind-up roll, the measurement of film reel diameter device is installed in the outside at let off roll and wind-up roll, can measure the instant coil diameter changing value of let off roll and wind-up roll immediately, and send the data computation unit to by information input unit, the data computation unit by interpolation operation draw let off roll and wind-up roll whenever be fastened L apart from the time required pulse count

And then send to let off roll motor and wind-up roll motor by information output unit, and then realize the accurate control of tension force by the position relation.

Embodiment two.

Be cylindrical at let off roll, wind-up roll is under the cylindroid situation, wind-up roll starts by fixing position, the measurement of film reel diameter device is installed in the outside at let off roll, at the transverse of wind-up roll and the outside of minor axis the measurement of film reel diameter device is installed, can measure the instant coil diameter changing value of let off roll and wind-up roll immediately, and send the data computation unit to by information input unit, the data computation unit by interpolation operation draw let off roll and wind-up roll whenever be fastened L apart from the time required pulse count

And then send to let off roll motor and wind-up roll motor by information output unit, and then realize the accurate control of tension force by the position relation.

Embodiment three,

The initial coil diameter of known let off roll and wind-up roll and winding thickness, by calculating the coil diameter changing value that to learn let off roll and wind-up roll, and send the data computation unit to by information input unit, the data computation unit by interpolation operation draw let off roll and wind-up roll whenever be fastened L apart from the time required pulse count

And then send to let off roll motor and wind-up roll motor by information output unit, and then realize the accurate control of tension force by the position relation.

Embodiment four

Installation site sensor on jockey pulley, instant variation of calculating tension force, and feed back to information input unit and be transferred to the data computation unit, and then respectively the interpolation operation data among embodiment one or embodiment two or the embodiment three are compared and deviation calculating, and then pulse count sent to let off roll motor and wind-up roll motor by information output unit, and then realize the accurate control of tension force by the position relation.

Embodiment five

At let off roll and wind-up roll motor coder is installed, is used for instant detection motor rotation position, and feeds back to control setup, send the required position of pulse by described data computation unit and described interpolation operation and compare analysis, thereby further adjust pulse count.

Embodiment six

Interpolation operation in embodiment one, embodiment two, embodiment three, embodiment four, embodiment five also can be for being calculated the motor position of rotation of let off roll and the every winding of wind-up roll motor winding L distance by the bus controller process, and this location information directly sent to let off roll motor and wind-up roll motor, thereby the running of control motor.

As Fig. 1, Fig. 2, tenslator of the present invention and tension control method can be used for but be not limited to the tension force control of lithium cell in making.

Although reference example and accompanying drawing; a kind of tenslator of the present invention and tension control method are illustrated; but above-mentioned disclosed content only is in order better to understand the present invention; rather than limit the scope of claim by any way; so all according to the described structure of patent claim of the present invention, feature and principle do etc. change or modify, be included in protection scope of the present invention.

Claims (10)

1. a tenslator is characterized in that, described tenslator comprises:

Control setup, let off roll, wind-up roll, draw-in groove, jockey pulley, coil diameter detecting device;

Described coil diameter detecting device is used for the detection to let off roll and wind-up roll coil diameter;

Described let off roll and wind-up roll are by the difference motor-driven, and described jockey pulley two ends are positioned at draw-in groove and can fluctuate;

Described control setup comprises:

Information input unit is used for the required computing information of input;

The data computation unit, be used for the let off roll of comprehensive input and wind-up roll coil diameter information let off roll and the wind-up roll winding L that whenever is fastened is carried out interpolation operation apart from position and winding wrap wire speed that motor rotates, unreel consistent with the rolling linear velocity in the winding process;

Information output unit is used for that the data computation unit is carried out interpolation operation gained motor rotation information and exports to let off roll motor and wind-up roll motor respectively;

Described control setup is electrically connected with let off roll motor and wind-up roll motor respectively, and described coil diameter detecting device is electrically connected with control setup, and the winding of twining on the let off roll is wound on the wind-up roll by jockey pulley.

2. tenslator as claimed in claim 1, it is characterized in that: described motor is servomotor or stepping motor.

3. tenslator as claimed in claim 1, it is characterized in that: described data computation unit is motion control card or motion controller or interpolator or bus controller.

4. as claim 1,2 or 3 described tenslators, it is characterized in that: described tenslator also comprises position detecting device, is used for the position probing that fluctuates to jockey pulley; And be electrically connected with control setup, be used for giving control setup with the change in location message feedback; Wherein said position detecting device connects warning device, for output that unusual tension information is reported to the police.

5. as claim 1,2 or 3 described tenslators, it is characterized in that: described L value can be by the information input unit setting.

6. as claim 1,2 or 3 described tenslators, it is characterized in that: described let off roll is cylindrical, and wind-up roll is elliptical cylinder-shape.

7. as claim 1,2 or 3 described tenslators, it is characterized in that: described let off roll and let off roll are cylindrical.

8. tenslator as claimed in claim 6 is characterized in that: described coil diameter detecting device is used for the measurement to transverse and minor axis when measuring the wind-up roll coil diameter.

9. as claim 1,2 or 3 described tenslators, it is characterized in that: described let off roll and wind-up roll motor also have coder, and be electrically connected with control setup, be used for the instant motor position of rotation that detects, and control setup is given in immediate feedback, should reach the position with described data computation unit by the rotation of interpolation operation transmission location information rear motor and compare analysis, thereby further adjust the motor rotary position information.

10. as claim 1,2 or 3 described tenslators, it is characterized in that described tenslator is used for the tension force control that lithium cell is made.

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