CN202390001U - Tension control device - Google Patents

Abstract

The utility model relates to a tension control device. The tension control device comprises: a control device, an unwinding roller, a winding roller, a card slot, a tension roller, and a roll diameter detection device; the unwinding roller and the winding roller are composed of Driven by a motor, the two ends of the tension roller are located in the card slot and can float up and down; wherein, the control device includes: an information input unit; a data calculation unit, which is used to comprehensively input the diameter information of the unwinding roller and the winding roller. The unwinding roller and the rewinding roller coil winding L are interpolated from the position rotated by the motor to ensure that the winding line speed is consistent; the information output unit; the control device is electrically connected to the unwinding roller motor and the rewinding roller motor respectively , the coil diameter detection device is electrically connected with the control device, and the tape wound on the unwinding roller is wound on the winding roller through the tension roller. The device has the beneficial effects of simple control mode, easy realization, high control precision and good system operation stability.

Description

A kind of tenslator

Technical field

The utility model relates to the control technology field, particularly relates to a kind of control setup of tension force.

Background technology

Tension 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 through 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 through 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 is high, spare part is difficult.

3, variable frequency control, service precision is higher, but it is a speed control; The variables 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 permanent tension force in the error limit through test of many times.

4, at present each Tension Control to be mostly that let off roll and wind-up roll are all cylindrical, can not tackle multiple situation in the practical application, certain limitation is arranged.

Summary of the invention

For overcoming the above problems, the utility model provides a kind of tenslator,

Said tenslator comprises:

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

Said volume footpath detecting device is used for the detection to let off roll and/or wind-up roll volume footpath;

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

Said control setup comprises:

Information input unit is used to import required computing information;

The data computation unit, the let off roll and the wind-up roll volume footpath 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 rotated, unreel consistent with the rolling linear velocity in the winding process;

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

Said control setup is electrically connected with let off roll motor and wind-up roll motor respectively, and said volume footpath 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 through jockey pulley.

Further said motor is servomotor or stepping motor.

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

Further said 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, is used for the output of reporting to the police of unusual tension information.

Further said L value can be passed through the information input unit setting.

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

Further said let off roll and wind-up roll motor also have coder; And be electrically connected with control setup; Be used for detecting immediately the motor position of rotation; And immediate feedback should reach the position with said data computation unit through the rotation of interpolation operation transmission location information rear motor and compare analysis, thereby further adjust the motor rotary position information to control setup.

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

The control method of said 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 volume footpath 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 through information output unit through interpolation operation, controls the operation of two motors.

Wherein the volume of let off roll and wind-up roll footpath can draw through measurement and calculation mode, thereby realizes the tension force accuracy control.

The utility model also provides a kind of tension control method.

Said tension control method comprises the steps:

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

Step 2, obtain let off roll and wind-up roll original volume footpath;

Step 3, obtain time dependent instant volume footpath 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 carries 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 through information output unit then;

Step 5, let off roll motor and wind-up roll motor turn round according to the information of being exported 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 an elliptical cylinder-shape.

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

Time dependent instant volume footpath can measure respectively through 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 volume footpath and winding THICKNESS CALCULATION before time dependent instant volume footpath can begin to twine through 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 comprehensive analyses and the deviation calculation to the jockey pulley change in location information of position detecting device feedback; Wherein position detecting device is electrically connected with warning device, the alarm message when exportable tension force is unusual.

L value in the further said step 4 can be provided with.

Interpolation operation described in the further step 4 comprises that also through 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.

The beneficial effect of the utility model is:

1, mode is simple, realizes that easily, control accuracy is high;

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 following:

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 representes the distance that unreels set;

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

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

Can know by following formula, in winding process, twine L distance time dependent radian separately, can draw let off roll and wind-up roll and twine the required pulse number that L rotates apart from motor as long as draw let off roll and wind-up roll.

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

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

Have for ellipse:

If oval last 2 P (x ₁, y ₁) and Q (x ₂, y ₂) cooresponding eccentric angle is respectively α, β, major axis is a, minor axis is b, and P point substitution elliptic equation is had: $\left\{\begin{array}{c}{x}_1=a\mathrm{Cos}\mathrm{\α}\\ y_1=b\mathrm{Sin}\mathrm{\α}\end{array}\right.$

So the eccentric angle that P is ordered is: $\mathrm{\α}=\mathrm{Acc}\mathrm{Cos}\frac{x_1}{a}$

In like manner can obtain the eccentric angle that Q is ordered: $\mathrm{\β}=\mathrm{Arccos}\frac{x_2}{a}$

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

And the definition of oval eccentricity: $e=\frac{c}{a}(0<e<1),$ E is an eccentricity

Can get:

$L_{\mathrm{PQ}}=a{\&Integral;}_{\mathrm{\&beta;}}^{\mathrm{\&alpha;}}\sqrt{1-e^2{\sin }^2\mathrm{\&theta;}}\mathrm{d\&theta;}=a{\&Integral;}_{\arcsin \frac{X_2}{a}}^{\arcsin \frac{X_1}{a}}\sqrt{1-e^2{\sin }^2\mathrm{\&theta;}}\mathrm{d\&theta;}$

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

Can know that known definite arc length can calculate circle and oval corresponding radian.

For overcoming the above problems, the utility model provides a kind of tenslator,

Said tenslator comprises:

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

Said volume footpath detecting device is used for the detection to let off roll and/or wind-up roll volume footpath;

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

Said control setup comprises:

Information input unit is used to import required computing information;

The data computation unit, the let off roll and the wind-up roll volume footpath 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 rotated, unreel consistent with the rolling linear velocity in the winding process;

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

Said control setup is electrically connected with let off roll motor and wind-up roll motor respectively, and said volume footpath 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 through jockey pulley.

Further said motor is servomotor or stepping motor.

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

Further said 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, is used for the output of reporting to the police of unusual tension information.

Further said L value can be passed through the information input unit setting.

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

Further said let off roll and wind-up roll motor also have coder; And be electrically connected with control setup; Be used for detecting immediately the motor position of rotation; And immediate feedback should reach the position with said data computation unit through the rotation of interpolation operation transmission location information rear motor and compare analysis, thereby further adjust the motor rotary position information to control setup.

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

The control method of said 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 volume footpath 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 through information output unit through interpolation operation, controls the operation of two motors.

Wherein the volume of let off roll and wind-up roll footpath can draw through measurement and calculation mode, thereby realizes the tension force accuracy control.

The utility model also provides a kind of tension control method.

Said tension control method comprises the steps:

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

Step 2, obtain let off roll and wind-up roll original volume footpath;

Step 3, obtain time dependent instant volume footpath 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 carries 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 through information output unit then;

Step 5, let off roll motor and wind-up roll motor turn round according to the information of being exported 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 an elliptical cylinder-shape.

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

Time dependent instant volume footpath can measure respectively through 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 volume footpath and winding THICKNESS CALCULATION before time dependent instant volume footpath can begin to twine through 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 comprehensive analyses and the deviation calculation to the jockey pulley change in location information of position detecting device feedback; Wherein position detecting device is electrically connected with warning device, the alarm message when exportable tension force is unusual.

L value in the further said step 4 can be provided with.

Interpolation operation described in the further step 4 comprises that also through 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

At let off roll and wind-up roll all is under the situation of cylinder; The measurement of film reel diameter device is installed in the outside at let off roll and wind-up roll; Can measure the instant volume footpath changing value of let off roll and wind-up roll immediately; And send the data computation unit to through information input unit; The data computation unit through 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 through information output unit, and then realize the accuracy control of tension force through the position relation.

Embodiment two.

At let off roll is cylindrical; 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 volume footpath changing value of let off roll and wind-up roll immediately; And send the data computation unit to through information input unit, the data computation unit through 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 through information output unit, and then realize the accuracy control of tension force through the position relation.

Embodiment three,

The initial volume footpath and the winding thickness of known let off roll and wind-up roll; Through calculating the volume footpath changing value that to learn let off roll and wind-up roll; And send the data computation unit to through information input unit; The data computation unit through 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 through information output unit, and then realize the accuracy control of tension force through 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 calculation, and then pulse count is sent to let off roll motor and wind-up roll motor through information output unit, and then realize the accuracy control of tension force through the position relation.

Embodiment five

On let off roll and wind-up roll motor, coder is installed, is used for detecting the motor rotation position immediately, and feeds back to control setup, send the required position of pulse by said data computation unit and said 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.

Like Fig. 1, Fig. 2, tenslator of the present invention and tension control method can be used for but be not limited to the Tension Control in the lithium cell manufacturing.

Although reference implementation example and accompanying drawing; A kind of tenslator and tension control method to the utility model are illustrated; But above-mentioned disclosed content only is in order better to understand the utility model; Rather than limit the scope of claim by any way, so all according to the described structure of the utility model patent claim, characteristic and principle do etc. change or modify, include protection domain in the utility model.

Claims (10)

1. A tension control device, characterized in that the tension control device comprises: The tension control device includes: Control device, unwinding roller, winding roller, card slot, tension roller, roll diameter detection device; The coil diameter detecting device is used for detecting the coil diameter of the unwinding roller and the winding roller; The unwinding roller and winding roller are driven by motors respectively, and the two ends of the tension roller are located in the slot and can float up and down; The control device includes: An information input unit for inputting required calculation information; The data calculation unit is used to interpolate the position of the unwinding roller and the rewinding roller, the fixed L-distance motor rotation position and the winding line speed of the tape, based on the input diameter information of the unwinding roller and the rewinding roller. During the winding process, the unwinding and winding line speeds are consistent; The information output unit is used to output the motor rotation information obtained by interpolating the data calculation unit to the unwinding roller motor and the winding roller motor respectively; The control device is electrically connected to the motor of the unwinding roller and the motor of the winding roller respectively, the roll diameter detection device is electrically connected to the control device, and the tape wound on the unwinding roller is wound on the winding roller through the tension roller. 2. The tension control device according to claim 1, wherein the motor is a servo motor or a stepping motor. 3. The tension control device according to claim 1, characterized in that: the data calculation unit is a motion control card or a motion controller or an interpolator or a bus controller. 4. The tension control device according to claim 1, 2 or 3, characterized in that: the tension control device also includes a position detection device for detecting the floating position of the tension roller; and is electrically connected with the control device, It is used to feed back the position change information to the control device; wherein the position detection device is connected to an alarm device, and is used to output an alarm for abnormal tension information. 5. The tension control device according to claim 1, 2 or 3, characterized in that: the fixed L value can be set through an information input unit. 6. The tension control device according to claim 1, 2 or 3, characterized in that: the unwinding roller is cylindrical, and the winding roller is elliptical cylindrical. 7. The tension control device according to claim 1, 2 or 3, characterized in that: the unwinding roller and the unwinding roller are cylindrical. 8 . The tension control device according to claim 6 , wherein the coil diameter detecting device is used for measuring the major axis and the minor axis of the ellipse when measuring the coil diameter of the winding roll. 9. The tension control device as claimed in claim 1, 2 or 3, characterized in that: the motors of the unwinding roller and winding roller also have encoders, and are electrically connected to the control device for instant detection of motor rotation position, and feed back to the control device in real time, and compare and analyze with the position information that the motor should reach after the data calculation unit sends the position information through interpolation calculation, so as to further adjust the position information of the motor rotation. 10. The tension control device according to claim 1, 2 or 3, characterized in that the tension control device is used for tension control in the manufacture of lithium batteries.

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