CN102758277B - Cotton carding automatic adjusting homogenizing device and its control method - Google Patents
Cotton carding automatic adjusting homogenizing device and its control method Download PDFInfo
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- CN102758277B CN102758277B CN201210227682.0A CN201210227682A CN102758277B CN 102758277 B CN102758277 B CN 102758277B CN 201210227682 A CN201210227682 A CN 201210227682A CN 102758277 B CN102758277 B CN 102758277B
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Abstract
The invention discloses a kind of cotton carding automatic adjusting homogenizing device and its control methods, the neat and well spaced instrument includes programmable controller, frequency converter, hopper air pressure detection circuit, temperature sensing circuit, Rotating speed measring circuit and motor, further includes weighing sensor, signal processing circuit, touch screen and hand push button.The method is as follows：Using heavy cotton measures weight signal, little differential pressure sensor detects to obtain air pressure in hopper on the weighing sensor detection scale pan and temperature sensor detects to obtain that ambient temperature signal goes out cotton roller tach signal with doffing speed signal, hopper after the amplification of signal processing circuit and digitized processing and photosignal is exported to programmable controller, calculate inverter control signal, inverter control signal passes through Frequency Converter Control motor speed, and then controls the cotton feeding amount of cotton feeding roller.The present invention greatly reduces on-site installation work amount, and convenient repair and maintenance in the future using the method weighed.
Description
Technical field
The present invention relates to a kind of carding machine electrical apparatus control equipments and control method in a kind of cotton spinning weaving process, more particularly to
A kind of cotton carding automatic adjusting homogenizing device and its control method.
Background technology
Existing cotton carding automatic adjusting homogenizing device is electrically divided into two parts, and part control hopper is for cotton, another part control comb
Cotton machine cotton feeding roller is separately mounted in two electrical cabinets, and the electrical connection between such two parts becomes very complicated, line mistake
More, it is extremely inconvenient to cause to install and overhaul；Electrically control frequency converter output frequency is controlled using analog input simultaneously, due to
The analog input performance parameter of frequency converter has discrete type, and every has difference, and control in this way can cause board
Between have differences, even if same analog signal input different platform frequency converter output frequency if it is different.
The operation principle of cotton carding automatic adjusting homogenizing device：Detect carding machine cotton feeding roller at cotton amount number, control feed cotton
The rotating speed of roller keeps the unit interval interior constant by the cotton amount of cotton feeding roller, finally makes the sliver item that carding machine exports dry uniform.
The detection method of cotton amount is detected to cotton layer thickness by displacement sensor at existing cotton feeding roller, according to change in displacement
The rotating speed of amount control cotton feeding roller, uniform purpose is done to reach carding machine output sliver item.This control operation principle is
Establish what the under conditions of assumed at one set up, the reason is as follows that：
1, identical cotton amount, cotton layer thickness is related with pressure above cotton is pressed on, and the bigger cotton layer thickness of pressure is more
Thin, the smaller cotton layer thickness of pressure is thicker；
2, the cotton characteristic of different cultivars is different, and density is different, therefore the practical cotton amount of same thickness may also
It is different；
3, humiture influence cotton in moisture number, and then influence cotton weight, but can not pass through detect cotton thickness
The method of degree detected；
In conclusion cotton layer thickness and cotton amount number be relationship that neither one determines and can quantify, therefore lead to
It is unscientific that detection cotton layer thickness, which is crossed, come the cotton carding automatic adjusting homogenizing device controlled, will necessarily cause carding machine final output
Sliver quality index is undesirable.
In practice, the sliver evenness quality of the cotton carding automatic adjusting homogenizing device control designed with existing detection technique is not
Stablize, the evenness quality between different platform differs greatly, and humiture is affected to what sliver item was done, to being produced in production process
The control of quality causes serious influence.
Invention content
Purpose of the present invention is to provide a kind of cotton carding automatic adjusting homogenizing device and its control method in view of the defects existing in the prior art.
The present invention to achieve the above object, adopts the following technical scheme that：
Cotton carding automatic adjusting homogenizing device of the present invention, including programmable controller, frequency converter, doffing speed detection circuit, hopper go out
Cotton roller Rotating speed measring circuit, temperature sensing circuit, air pressure detection circuit, photoelectric sensor, hopper wind turbine, hopper hired roughneck's motor
And motor, it is characterised in that further include weighing sensor, signal processing circuit and hand push button, frequency converter includes hopper
Into cotton roller frequency converter and carding machine cotton feeding roller frequency converter, motor includes that hopper feeds cotton into cotton roller motor and carding machine
Roller motor, wherein weighing sensor are placed in below the scale pan for detecting the cotton weight on the scale pan, weighing sensor it is defeated
The output of outlet, the output end of hopper air pressure detection circuit, temperature sensing circuit is connected to the input of signal processing circuit
End, the output end of signal processing circuit, the output end of photoelectric sensor, the output end of doffing speed detection circuit, hopper
The output for going out cotton roller Rotating speed measring circuit is connected to the input terminal of programmable controller, the output end difference of programmable controller
Connect hopper wind turbine, hopper hired roughneck motor, hopper into cotton roller frequency converter and carding machine cotton feeding roller Frequency Converter Control end input
The output at end, hopper into cotton roller frequency converter terminates hopper into the input terminal of cotton roller motor, carding machine cotton feeding roller frequency conversion
The input terminal of the output termination carding machine cotton feeding roller motor of device.
Preferably, touch screen is also set up on the cotton carding automatic adjusting homogenizing device.
Preferably, the programmable controller is communicated by ModBus communication protocols with frequency converter.
The control method of cotton carding automatic adjusting homogenizing device is as follows：Using the cotton weight on the weighing sensor detection scale pan, by institute
Detect the temperature signal that obtained weight signal and temperature sensing circuit detect, hopper air pressure detection circuit detects
Pressure signal after the amplification of signal processing circuit and digitized processing with sliver dry weight setting value, doffing speed
The doffing speed signal and hopper that detection circuit detects go out the tach signal one that cotton roller Rotating speed measring circuit detects
And export to programmable controller, inverter control signal is calculated, inverter control signal passes through Frequency Converter Control motor
Rotating speed, and then control the cotton feeding amount of cotton feeding roller.
The present invention has the advantages that：
1, detected value and cotton amount are proportional, without supposed premise；
2, detected value and humidity are not related；
3, the kind of detected value and cotton is not related；
Only detected value most really reflect practical cotton amount number, cotton carding automatic adjusting homogenizing device could be accurate according to detected value
Control carding machine cotton feeding roller rotating speed, to keep the sliver item that carding machine exports dry uniform.Detection side using the present invention
It is not related with humiture and cotton variety that method measures cotton amount, therefore, is controlled according to the cotton carding automatic adjusting homogenizing device of this principle design
Sliver evenness quality stablize, well solved at present encountered in production sliver unstable quality the problem of.
Description of the drawings
Fig. 1：The neat and well spaced instrument structure chart of the present invention.
Fig. 2：The neat and well spaced instrument electrical schematic diagram of the present invention.
Fig. 3：Control method schematic diagram of the present invention.
Specific implementation mode
As shown in Figure 1 to Figure 2, cotton carding automatic adjusting homogenizing device of the present invention, including programmable controller 1, frequency converter, doffing speed
Detection circuit 2, hopper go out cotton roller Rotating speed measring circuit 3, temperature sensing circuit 4, air pressure detection circuit 5, photoelectric sensor 6,
Hopper wind turbine 7, hopper hired roughneck motor 8 and motor, it is characterised in that further include weighing sensor 9, signal processing circuit
10 and hand push button 11, frequency converter includes hopper into cotton roller frequency converter 12 and carding machine cotton feeding roller frequency converter 13, motor
Including hopper into cotton roller motor 14 and carding machine cotton feeding roller motor 15, wherein weighing sensor is placed in 16 lower section of the scale pan
For detecting the cotton weight on the scale pan, the output end of weighing sensor, the output end of hopper air pressure detection circuit, temperature detection
The output of circuit is connected to the input terminal of signal processing circuit, output end, the photoelectric sensor of signal processing circuit
Output end, doffing speed detection circuit output end, hopper go out cotton roller Rotating speed measring circuit output be connected to it is programmable
The input terminal of controller, the output end of programmable controller connect hopper wind turbine, hopper hired roughneck motor, hopper and become into cotton roller respectively
The output of the input terminal of frequency device and carding machine cotton feeding roller Frequency Converter Control end, hopper into cotton roller frequency converter terminates hopper into cotton
The input terminal of roller motor, the input of the output termination carding machine cotton feeding roller motor of carding machine cotton feeding roller frequency converter
End.
Preferably, touch screen 18 is also set up on the cotton carding automatic adjusting homogenizing device.
Preferably, the programmable controller is communicated by ModBus communication protocols with frequency converter.
Preferably, the frequency converter includes hopper into cotton roller frequency converter and carding machine cotton feeding roller frequency converter.
As shown in figure 3, the control method of cotton carding automatic adjusting homogenizing device is as follows：Using cotton on the weighing sensor detection scale pan
Weight, the temperature signal that the weight signal detected and temperature sensing circuit are detected, hopper air pressure detection circuit
Detect obtained pressure signal and be delivered to signal processing circuit together, after amplification and digitized processing with doffing speed
Doffing speed signal, the hopper that detection circuit detects go out tach signal, the optical telecommunications that cotton roller speed circuit detects
Number output to programmable controller, calculate inverter control signal, inverter control signal is through Frequency Converter Control motor
Rotating speed, and then control the cotton feeding amount of cotton feeding roller 17.
The present invention detects signal and abandons the original detection method to cotton amount, uses the method weighed instead and is examined to cotton
It surveys.The electric part of control hopper and the electric part of control carding machine cotton feeding roller are combined into one, are installed to one electrically
Inside cabinet, greatly reduce on-site installation work amount, and convenient repair and maintenance in the future.Frequency converter output frequency is controlled to use
The ModBus means of communication control, and are transmitted to frequency converter by the direct output frequency instructions of PLC, ensure the frequency and reason of frequency converter output
By upper consistent.
No matter the signal output form of differential pressure transmitter is current mode or voltage-type, can all be directly connected to electrical
On plate.Using touch screen operation, all data inputs all operate on the touchscreen, simple and convenient；All output informations are all being touched
It touches and is reflected on screen, it is visual and clear.
Claims (2)
1. a kind of cotton carding automatic adjusting homogenizing device, including programmable controller, frequency converter, doffing speed detection circuit, hopper go out cotton sieve
Draw Rotating speed measring circuit, temperature sensing circuit, air pressure detection circuit, photoelectric sensor, hopper wind turbine, hopper hired roughneck motor and electricity
Motivation, it is characterised in that further include weighing sensor, signal processing circuit and hand push button, frequency converter includes hopper into cotton
Roller frequency converter and carding machine cotton feeding roller frequency converter, motor include hopper into cotton roller motor and carding machine cotton feeding roller
Motor, wherein weighing sensor, which are placed in below the scale pan, is used to detect the cotton weight on the scale pan, the output end of weighing sensor,
The output of the output end, temperature sensing circuit of hopper air pressure detection circuit is connected to the input terminal of signal processing circuit, letter
Number output end of amplification treatment circuit, the output end of photoelectric sensor, doffing speed detection circuit output end, hopper go out cotton sieve
The output of Rotating speed measring circuit is drawn to be connected to the input terminal of programmable controller, the output end of programmable controller connects hopper respectively
Wind turbine, hopper hired roughneck motor, hopper are into the input terminal of cotton roller frequency converter and carding machine cotton feeding roller Frequency Converter Control end, hopper
Output into cotton roller frequency converter terminates hopper into the input terminal of cotton roller motor, the output of carding machine cotton feeding roller frequency converter
Terminate the input terminal of carding machine cotton feeding roller motor；The cotton carding automatic adjusting homogenizing device also sets up touch screen；It is characterized in that institute
Programmable controller is stated to communicate with frequency converter by ModBus communication protocols.
2. a kind of control method based on cotton carding automatic adjusting homogenizing device described in claim 1, it is characterised in that the method is as follows：
Using cotton feeding amount on the weighing sensor detection scale pan, the weight signal detected and hopper pressure detection circuit are detected
To pressure signal, the temperature signal that detects of temperature sensing circuit be transported to signal processing circuit, by amplification and
After digitized processing and doffing speed signal that doffing speed detection circuit detects, hopper go out cotton roller Rotating speed measring electricity
The output signal of tach signal and photoelectric sensor that road is detected is exported to programmable controller, and frequency converter control is calculated
Signal processed, inverter control signal passes through Frequency Converter Control motor speed, and then controls the cotton feeding amount of cotton feeding roller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210227682.0A CN102758277B (en) | 2012-07-02 | 2012-07-02 | Cotton carding automatic adjusting homogenizing device and its control method |
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| CN201210227682.0A CN102758277B (en) | 2012-07-02 | 2012-07-02 | Cotton carding automatic adjusting homogenizing device and its control method |
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| CN102758277B true CN102758277B (en) | 2018-09-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108255786B (en) * | 2017-11-28 | 2021-07-16 | 中南大学 | Method and system for calculating interference compensation of weighing result |
| CN112558544A (en) * | 2020-12-23 | 2021-03-26 | 聊城大学高新技术产业总公司 | Long stapled cotton foreign fiber fine separator |
| CN116022587A (en) * | 2023-02-09 | 2023-04-28 | 山东日发纺织机械有限公司 | Conveying speed control method, controller and production line |
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| ATE249537T1 (en) * | 2000-02-09 | 2003-09-15 | Jossi Holding Ag | METHOD AND DEVICE FOR CONTROLLING A TREATMENT SYSTEM FOR TEXTILE FIBERS, IN PARTICULAR COTTON FIBERS |
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Effective date of registration: 20180802 Address after: 438700 122 Wenquan Road, Wenquan Town, Yingshan County, Hubei Applicant after: Hubei Jin Yuan hemp textile technology Co., Ltd. Address before: 214000 1-N house, Jinxi private economic zone, Dongting Town, Wuxi, Jiangsu Applicant before: Wuxi Lingte Electronic Instrument Equipment Co., Ltd. |
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