CN103950771A - Tension control unit and control method thereof in thin film production - Google Patents
Tension control unit and control method thereof in thin film production Download PDFInfo
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- CN103950771A CN103950771A CN201410186489.6A CN201410186489A CN103950771A CN 103950771 A CN103950771 A CN 103950771A CN 201410186489 A CN201410186489 A CN 201410186489A CN 103950771 A CN103950771 A CN 103950771A
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Abstract
The invention relates to a tension control unit and a control method thereof in thin film production. At present, the existing tension control product in the market is high in cost and complicated in functions, and cannot aim to the particular field, or cannot feed back control to an execution component, and cannot ensure the control accuracy. According to the invention, an ultrasonic testing module with a temperature compensation function is adopted to detect variation of radius of a thin film material coil in real time; a tension controller generates control signals according to change of the radius of the thin film material coil, controls current output by a controllable constant flow source to control a magnetic powder brake to correspondingly change torque of output, in order to ensure that a thin film keeps constant tension. The tension control unit disclosed by the invention controls the execution component to form a closed loop system with the raw material coil diameter, so as to realize real-time tension control; a microcontroller, the magnetic powder brake and an ultrasonic ranging module are utilized and a tension sensor is not required, so that the cost is low.
Description
Technical field
The invention belongs to the soft medium production and processing such as film, cloth field, relate in particular to control method and the corresponding device of memberane stress in a kind of film production manufacture field, in the reelability raw material material retractable processes such as industrial film, silk, line, sheet steel, its tensile force is controlled, avoided raw material because of overtension or the too small equipment generation fault that causes.
Background technology
Tension force control refers to can control lastingly on material strip and licks in retractable the ability that keeps constant-tension in journey all kinds of reelability materials such as metallic film, textile, steel plate, electric wire, in the process of machine acceleration, deceleration and uniform movement, all keep constant tension force, it is component part important in commercial production, and the in the situation that of machine emergency braking, tension control assembly also can guarantee can not damage material strip.Especially in industrial film cutting field, for making cutting knife complete smoothly cutting, blowing is crossed range request and is kept constant tensile force.The lax cutting processing that cannot realize of the too small film of tensile force, overtension can cause again film fracture.
In conventional films production and the course of processing, tension force control basic skills is as follows:
1. manually tension force control: in the process of rewinding or blowing, in the time that material coil diameter size changes to a certain degree, by the control setup of operator's manual regulation electromagnetic power brake, thereby reach the object of tension force control, this method precision is very low, cannot adapt to the needs that modern industry is produced.
2. material coil diameter detects the control of formula tension force.Refer to that approach switch is arranged on spool place, detect the rotating speed of spool, by the spool initial value that sets and the thickness of membraneous material, calculate the diameter of current material volume, according to the variation output control signal of material volume, to control the moment of torsion of material retractable volume, thus the tension force of Indirect method material strip.This mode can realize stable tension force control, still, due to transmission torque, the impact of the factors such as mechanical wear and linear change, this control linearity is poor.
3. tension pick-up mode: refer to directly use tension pick-up to carry out Real-Time Monitoring to tension force, common two sensors use simultaneously, is arranged on the end axle that detects deflector roll both sides.Material strip is exerted pressure by deflector roll, thereby tension pick-up detects the actual tension of film, and sends surveyed tension data to tension control assembly, thereby realizes the closed loop control of tensile force.Shortcoming is that system can not be made a response in time to stronger interference, and when the tension variation of material strip is larger, control system cannot reach state of equilibrium in time, and price is higher.
Above-mentioned technology is the important application engineering in this area, but respectively has in practice merits and faults.In the actual production of film cutting, need one to there is operability, high stable and persistent tension control method.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, tenslator and control method thereof in a kind of film production.
For achieving the above object, the present invention is achieved through the following technical solutions:
Tension control method in a kind of film production, employing detects the variable quantity of film material volume radius size in real time with the ultrasonic testing module of temperature compensating, tension control assembly produces control signal according to the variation of material volume radius size, by controlling the electric current of controlled constant current source output, to control the moment of torsion of the corresponding change output of electromagnetic power brake, to guarantee that film keeps constant tension force.
A kind of tenslator, mainly comprise tension control assembly, electromagnetic power brake, controlled constant current source and ultrasonic testing module, ultrasonic testing module detects the variable quantity of film material coil diameter in real time, the very little variable quantity of material tape measure that the ultrasonic testing module that receives tension control assembly detects, produce control signal, controlled constant current source receives described control signal, and drives electromagnetic power brake to change output torque, guarantees that film keeps constant tension force.
Described ultrasonic testing module is made up of signal processing module and ultrasonic transduter, and signal processing module has temperature sensor, selects ultrasonic velocity parameter according to place ambient temperature, and when installation, ultrasonic transduter is aimed at material spool line of centers; Accurately measure the distance X of ultrasonic transduter apart from material volume line of centers, the distance that ultrasonic testing module detects is Y, radius R=the X-Y of material volume.
Described tension control assembly is connected with ultrasonic testing module by serial ports, Real-time Obtaining material volume radius size data, and adopt PID track algorithm, give controlled constant current source by its DA port output control signal, drive the corresponding change output torque of electromagnetic power brake, ensure that film keeps constant tension force.
The input end of controlled constant current source is control signal, and mouth is the constant current linear with input control signal; Controlled constant current source current output terminal is connected with electromagnetic power brake.
The present invention can whole-process automatic complete raw material tension adjustment and control, reduces human cost, enhances productivity.Its advantage is: 1. the control to execution unit and raw material coil diameter form closed loop system, can realize real-time tension force control; 2. without tension pick-up, use microcontroller, electromagnetic power brake and ultrasonic distance measuring module, cost is low; 3. product is for the production and processing field taking industrial film as the main soft medium raw material of all kinds of reelabilitys, with strong points.
Brief description of the drawings
Fig. 1 is control schematic diagram of the present invention.
Fig. 2 is a kind of constant-tension control setup embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
The soft medium constant-tension control methods such as a kind of film, the system being mainly made up of ultrasonic testing module, tension control assembly, human-computer interaction interface, controlled constant current source and electromagnetic power brake realizes the control of tension force.Described ultrasonic testing module is made up of ultrasonic transduter and signal processing module, and signal processing module has environment temperature sensor, can testing environment temperature, and select suitable ultrasonic velocity parameter, to improve the accuracy of detection of ultrasonic testing module.Described tension control assembly is connected with ultrasonic testing module by serial ports, can Real-time Obtaining film etc. the radius size of soft medium material volume, and according to the parameter such as dielectric thickness, Tensity size setting, give controlled constant current source by tension control assembly D/A translation interface output control signal.Described human-computer interaction interface is mainly made up of communication interfaces such as the Man Machine Interface such as keyboard, read-out and serial ports, operating personal is set the parameters such as the thickness of the needed tension force of soft medium such as film, medium by Man Machine Interface, or automatically sets needed parameter by other controller by communication interfaces such as serial ports.Described controlled constant current source is mainly electromagnetic power brake provides constant drive current, and its input port is to control voltage signal, outgoing current, and output constant current and input voltage signal are linearly proportional.Described electromagnetic power brake is according to the size output moment of torsion of correspondence with it of received current.
Fig. 1 is technical scheme that the present invention adopts: adopt the ultrasonic testing module with temperature compensating, when installation, ultrasonic transduter is aimed at the line of centers of material volume, in real time the variation of processed material coil diameter size is detected, tension control assembly is according to the thickness d of the tension parameters setting and the soft medium of processing, according to " tension force (F)=moment of torsion (S)/(coil diameter (R)-thickness (d)/2) ", adopt PID track algorithm, calculate electromagnetic power brake and need output torque, by its D/A port output torque control voltage signal, therefore controlled constant current source is according to size control to electromagnetic power brake output torque with realization of the magnitude of voltage adjustment output exciting current of input, owing to there is linear relationship one to one in electromagnetic power brake received current and output torque, therefore, in the situation that material volume radius size constantly changes, tension control assembly is adjusted control voltage signal in real time, can make the soft media such as film keep constant tension force (F).
In an embodiment of the present invention, the ultrasonic distance measuring module of employing with temperature compensating, detect in real time the variable quantity of film material volume radius, and the dimensional data detecting is sent to tension control assembly by serial ports, tension control assembly is according to the parameter such as tension parameters and film thickness of setting in advance, calculate moment of torsion control parameter, control voltage signal to controlled constant current source by its DA port output, controlled constant current source is according to the value output constant current of correspondence with it of input voltage, therefore the moment of torsion of electromagnetic power brake output and the linear ratio of its received current, can guarantee that thus film keeps constant tension force.
Fig. 2 is a kind of constant-tension control setup embodiment in the present embodiment, mainly comprises: ultrasonic detection sensor 101, signal processing module 102, tension control assembly 103, human-computer interaction interface 104, adjustable constant-flow source 105 and electromagnetic power brake 106.Described ultrasonic detection sensor installation direction is rolled up 107 line of centerss with film material and is alignd, and is connected with the I/O of signal processing module 101 middle controllers; Described signal processing module has temperature detection sensor, can select suitable super sonic parameter (c=331.4* according to the temperature of surrounding environment
(m/s)), provide driving signal to ultrasonic transduter, and the signal of ultrasonic transduter receiving end is processed, realize the very little measurement of material tape measure; Described tension control assembly is connected with signal processing module by serial ports, receive the dimensional data Y of ultrasonic measurement, roll up center line detecting apart from size X according to prior Measurement accuracy ultrasonic transduter and material, can calculate the radius R=X-Y of discharging volume, then according to the predefined tension parameters of human-computer interaction interface 104 and film thickness size, adopt output torque that pid algorithm makes electromagnetic power brake with the diminishing and reduce of material volume radius, thereby guarantee that film has constant tension force; Described adjustable constant-flow source input end is connected with the D/A port of tension control assembly, mouth is connected with electromagnetic power brake, adjustable constant-flow source receives the voltage control signal of tension control assembly output, exports linear with it constant current, to drive electromagnetic power brake to export corresponding moment of torsion.
In embodiments of the invention, tension control assembly adopts ARM Series Controller to carry out the sampling and processing of signal, operating personal can be undertaken mutual or can be carried out by other controller the setting of parameter by serial ports by touch-screen and keyboard and tension control assembly, simple to operate, workable, and there is high stability, greatly improve the product design of film production processing, and improved the degree of automation of film production processing.
The present invention is in the method for film production machine tensions control, in thin-film production system, increase the ultrasonic testing module with temperature compensating, the variation of Real-Time Monitoring film material volume radius, and fed back to tension control assembly, the closed loop control of the tension force of indirectly having realized.Method of the present invention, simple in structure, reaction in time, has the advantages such as workable, stability height and persistence
In sum, the specific embodiment that this specification sheets is mentioned can reach good detection effect.Obtain technical scheme according to design of the present invention by logic analysis, reasoning or limited experiment in the art, all should belong to claim protection domain of the present invention.
Claims (5)
1. tension control method in a film production, it is characterized in that: adopt the variable quantity that detects in real time film material volume radius size with the ultrasonic testing module of temperature compensating, tension control assembly produces control signal according to the variation of material volume radius size, by controlling the electric current of controlled constant current source output, to control the moment of torsion of the corresponding change output of electromagnetic power brake, to guarantee that film keeps constant tension force.
2. a tenslator, mainly comprise tension control assembly, electromagnetic power brake, controlled constant current source and ultrasonic testing module, it is characterized in that: ultrasonic testing module detects the variable quantity of film material coil diameter in real time, the very little variable quantity of material tape measure that the ultrasonic testing module that receives tension control assembly detects, produce control signal, controlled constant current source receives described control signal, and drives electromagnetic power brake to change output torque, guarantees that film keeps constant tension force.
3. tenslator as claimed in claim 2, it is characterized in that: described ultrasonic testing module is made up of signal processing module and ultrasonic transduter, signal processing module has temperature sensor, select ultrasonic velocity parameter according to place ambient temperature, when installation, ultrasonic transduter is aimed at material spool line of centers; Accurately measure the distance X of ultrasonic transduter apart from material volume line of centers, the distance that ultrasonic testing module detects is Y, radius R=the X-Y of material volume.
4. tenslator as claimed in claim 2, it is characterized in that: described tension control assembly is connected with ultrasonic testing module by serial ports, Real-time Obtaining material volume radius size data, and adopt PID track algorithm, give controlled constant current source by its DA port output control signal, drive the corresponding change output torque of electromagnetic power brake, ensure that film keeps constant tension force.
5. tenslator as claimed in claim 2, is characterized in that: the input end of controlled constant current source is control signal, mouth is the constant current linear with input control signal; Controlled constant current source current output terminal is connected with electromagnetic power brake.
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| CN104760845A (en) * | 2015-04-17 | 2015-07-08 | 广东溢达纺织有限公司 | Fabric winding tension adjusting system and method for adjusting fabric winding tension |
| CN104925561A (en) * | 2015-04-30 | 2015-09-23 | 江苏海大印染机械有限公司 | Tension control system based on single-chip microcomputer for coiling machine |
| CN106219278A (en) * | 2016-08-31 | 2016-12-14 | 苏州迈硕自动化设备有限公司 | RO film automatic film rolling machine put film encapsulating unit |
| CN106339010A (en) * | 2016-11-18 | 2017-01-18 | 威科达（东莞）智能控制有限公司 | High-precision tension control system and control method |
| CN107032160A (en) * | 2017-05-17 | 2017-08-11 | 上海泽平机械设备有限公司 | Production is die cut winding device to automatic conversion at high speed |
| CN107253633A (en) * | 2017-06-09 | 2017-10-17 | 华中科技大学 | A kind of constant stress winding control system and its method towards variable cross-section flexible electronic |
| CN108044822A (en) * | 2018-01-01 | 2018-05-18 | 宁波钜德精工机械有限公司 | The constant-tension control method of Buddha's warrior attendant wire cutting machine |
| CN108059024A (en) * | 2017-12-22 | 2018-05-22 | 温州市华龙印刷机械有限公司 | A kind of unwinding tension automatic control structure |
| CN108423469A (en) * | 2017-06-23 | 2018-08-21 | 泉州精镁机械有限公司 | A kind of fine needle of band overload regulating mechanism is away from circular disc knitting machine |
| CN108502594A (en) * | 2018-03-30 | 2018-09-07 | 萨驰华辰机械(苏州)有限公司 | A kind of material unwinding equipment and material lead out speed adjusting method |
| CN108621554A (en) * | 2017-03-21 | 2018-10-09 | 精工爱普生株式会社 | Printing equipment and carrying method |
| CN108689327A (en) * | 2018-03-22 | 2018-10-23 | 武汉船用机械有限责任公司 | A kind of winch hawser constant-tension control method and device |
| CN109179088A (en) * | 2018-10-30 | 2019-01-11 | 国网山东省电力公司平阴县供电公司 | A kind of drawing cable and collator |
| CN109230743A (en) * | 2018-10-12 | 2019-01-18 | 常州市新创智能科技有限公司 | It is a kind of softness cloth unreel structure and control method |
| CN109292510A (en) * | 2018-09-21 | 2019-02-01 | 航宸石家庄新材料科技有限公司 | A kind of broadening carbon fiber braider constant tension coiling device |
| CN112010091A (en) * | 2020-09-25 | 2020-12-01 | 浙江营益金属材料科技有限公司 | Method for processing laminated iron with double-sided pattern alignment |
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| CN112794144A (en) * | 2021-03-31 | 2021-05-14 | 山东国维复合材料科技有限公司 | Thermoplastic film production and processing device and method |
| CN113381160A (en) * | 2021-06-18 | 2021-09-10 | 上海航天测控通信研究所 | Film antenna tensile force active adjusting mechanism |
| CN114314136A (en) * | 2021-12-30 | 2022-04-12 | 厦门艾美森新材料科技股份有限公司 | Damping control method and system for film winding support rod and inflatable heat sealing machine |
| CN114472589A (en) * | 2022-01-29 | 2022-05-13 | 燕山大学 | Online measuring method and system for diameter of hot rolled steel coil |
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| CN104760845A (en) * | 2015-04-17 | 2015-07-08 | 广东溢达纺织有限公司 | Fabric winding tension adjusting system and method for adjusting fabric winding tension |
| CN104925561A (en) * | 2015-04-30 | 2015-09-23 | 江苏海大印染机械有限公司 | Tension control system based on single-chip microcomputer for coiling machine |
| CN106219278A (en) * | 2016-08-31 | 2016-12-14 | 苏州迈硕自动化设备有限公司 | RO film automatic film rolling machine put film encapsulating unit |
| CN106339010A (en) * | 2016-11-18 | 2017-01-18 | 威科达（东莞）智能控制有限公司 | High-precision tension control system and control method |
| CN108621554A (en) * | 2017-03-21 | 2018-10-09 | 精工爱普生株式会社 | Printing equipment and carrying method |
| CN107032160A (en) * | 2017-05-17 | 2017-08-11 | 上海泽平机械设备有限公司 | Production is die cut winding device to automatic conversion at high speed |
| CN107253633A (en) * | 2017-06-09 | 2017-10-17 | 华中科技大学 | A kind of constant stress winding control system and its method towards variable cross-section flexible electronic |
| CN108423469A (en) * | 2017-06-23 | 2018-08-21 | 泉州精镁机械有限公司 | A kind of fine needle of band overload regulating mechanism is away from circular disc knitting machine |
| CN108059024A (en) * | 2017-12-22 | 2018-05-22 | 温州市华龙印刷机械有限公司 | A kind of unwinding tension automatic control structure |
| CN108044822A (en) * | 2018-01-01 | 2018-05-18 | 宁波钜德精工机械有限公司 | The constant-tension control method of Buddha's warrior attendant wire cutting machine |
| CN108044822B (en) * | 2018-01-01 | 2019-07-26 | 宁波钜德精工机械有限公司 | The constant-tension control method of Buddha's warrior attendant wire cutting machine |
| CN108689327A (en) * | 2018-03-22 | 2018-10-23 | 武汉船用机械有限责任公司 | A kind of winch hawser constant-tension control method and device |
| CN108502594A (en) * | 2018-03-30 | 2018-09-07 | 萨驰华辰机械(苏州)有限公司 | A kind of material unwinding equipment and material lead out speed adjusting method |
| CN108502594B (en) * | 2018-03-30 | 2020-02-11 | 萨驰华辰机械(苏州)有限公司 | Material unwinding device and material unwinding speed adjusting method |
| CN112236365A (en) * | 2018-05-28 | 2021-01-15 | 埃特纳集团股份公司 | Machine for testing stretchable plastic films for packaging |
| CN109292510A (en) * | 2018-09-21 | 2019-02-01 | 航宸石家庄新材料科技有限公司 | A kind of broadening carbon fiber braider constant tension coiling device |
| CN109230743A (en) * | 2018-10-12 | 2019-01-18 | 常州市新创智能科技有限公司 | It is a kind of softness cloth unreel structure and control method |
| CN109179088A (en) * | 2018-10-30 | 2019-01-11 | 国网山东省电力公司平阴县供电公司 | A kind of drawing cable and collator |
| CN112008796A (en) * | 2019-05-30 | 2020-12-01 | 维嘉数控科技（苏州）有限公司 | Automatic replacing device and method for base plate for numerical control drilling |
| CN112010091A (en) * | 2020-09-25 | 2020-12-01 | 浙江营益金属材料科技有限公司 | Method for processing laminated iron with double-sided pattern alignment |
| CN112591526A (en) * | 2020-11-24 | 2021-04-02 | 浙江熔聚装备科技有限公司 | Non-woven fabric collection method, control device and non-woven fabric manufacturing equipment |
| CN112591526B (en) * | 2020-11-24 | 2023-03-10 | 浙江熔聚装备科技有限公司 | Non-woven fabric collection method, control device and non-woven fabric manufacturing equipment |
| CN112794144A (en) * | 2021-03-31 | 2021-05-14 | 山东国维复合材料科技有限公司 | Thermoplastic film production and processing device and method |
| CN113381160A (en) * | 2021-06-18 | 2021-09-10 | 上海航天测控通信研究所 | Film antenna tensile force active adjusting mechanism |
| CN114314136A (en) * | 2021-12-30 | 2022-04-12 | 厦门艾美森新材料科技股份有限公司 | Damping control method and system for film winding support rod and inflatable heat sealing machine |
| CN114472589A (en) * | 2022-01-29 | 2022-05-13 | 燕山大学 | Online measuring method and system for diameter of hot rolled steel coil |
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Application publication date: 20140730 |