CN112962183A - Negative pressure energy-saving control device for cotton suction air pipe of spinning frame - Google Patents
Negative pressure energy-saving control device for cotton suction air pipe of spinning frame Download PDFInfo
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- CN112962183A CN112962183A CN202110354209.8A CN202110354209A CN112962183A CN 112962183 A CN112962183 A CN 112962183A CN 202110354209 A CN202110354209 A CN 202110354209A CN 112962183 A CN112962183 A CN 112962183A
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- negative pressure
- spinning frame
- cotton suction
- air pipe
- output end
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
- D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
- D01H13/1691—Thread breakage detector means associated with pneumatic cleaning devices, e.g. suction of broken end of yarn
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention relates to a cotton suction negative pressure system of a spinning frame, in particular to a negative pressure energy-saving control device of a cotton suction air pipe of the spinning frame. The device comprises a cotton suction fan and an air pipe, wherein the cotton suction fan is connected with one end of the air pipe, and the device is characterized by further comprising a spinning frame broken line detection device, a negative pressure sensor, a human-computer interface controller, a programmable controller and a frequency converter, wherein the output end of the negative pressure sensor, the output end of the spinning frame broken line detection device and the output end of the human-computer interface controller are respectively connected with the first input end, the second input end and the third input end of the programmable controller, the output end of the programmable controller is connected with the control end of the frequency converter, and the output end of the frequency converter is connected with the control end of the cotton suction fan. The negative pressure energy-saving control device of the cotton suction air pipe of the spinning frame can automatically adjust the negative pressure according to actual needs. Compared with the prior art, the device has the advantages of low energy consumption, easy adjustment of negative pressure, high automation degree and the like.
Description
Technical Field
The invention relates to a cotton suction negative pressure system of a spinning frame, in particular to a negative pressure energy-saving control device of a cotton suction air pipe of the spinning frame.
Background
The spinning frame cotton suction negative pressure system is an indispensable component of the spinning frame and plays an important role in the spinning process. The main function is that when the spinning frame breaks the yarn of a single spindle, the negative pressure system sucks the strand continuously output by the front roller to prevent the fiber from winding the roller. The negative pressure system has the following defects at present:
firstly, the energy consumption is very large. No matter the spinning frame has yarn broken ends or not, the cotton suction fan in the whole negative pressure system always operates in an open loop mode, and energy consumption is very large.
Secondly, the negative pressure can not be adjusted, and the adaptability is insufficient. In the spinning process, the actually required negative pressure is different along with the different varieties and counts of the matched fibers, for example, the negative pressure for spinning chemical fibers is high, particularly, after the varieties of the yarns are diversified, a cotton suction negative pressure system of a spinning frame cannot well match the requirements of a spinning process, and the adaptability is obviously insufficient.
Thirdly, the noise is very serious, and the influence on the working environment of a workshop is very large. As dozens of spinning machines in a spinning machine workshop are arranged, the cotton suction fans operate continuously, the noise generated by the accumulated work of the plurality of cotton suction fans reaches 106dBA, and the physical and psychological health of textile workers is seriously harmed.
Disclosure of Invention
The invention aims to design a negative pressure energy-saving control device of a cotton suction duct of a spinning frame, which can automatically adjust the negative pressure according to actual needs.
In order to achieve the purpose, the invention adopts the following technical scheme: a negative pressure energy-saving control device for a cotton suction air pipe of a spinning frame comprises a cotton suction fan and the air pipe, wherein the cotton suction fan is connected with one end of the air pipe, it is characterized in that the device is also provided with a spinning frame broken thread detection device, a negative pressure sensor, a human-computer interface controller, a programmable controller and a frequency converter, the broken thread detection device of the spinning frame is arranged on each single spindle of the spinning frame, the negative pressure sensor is arranged on the air pipe, the output end of the negative pressure sensor and the output end of the spinning frame broken thread detection device are respectively connected with the first input end and the second input end of the programmable controller, the output end of the human-computer interface controller is connected with the third input end of the programmable controller, the output end of the programmable controller is connected with the control end of the frequency converter, and the output end of the frequency converter is connected with the control end of the cotton suction fan.
In order to facilitate installation and accurately detect the negative pressure in the air duct, the technical scheme is further provided with: the tail of the air pipe is provided with an air tap, and the negative pressure sensor is arranged on the air tap.
In order to quickly and accurately obtain a yarn broken end signal, the technical scheme is further provided with: the broken yarn detection device of the spinning frame comprises a ring arranged on a ring plate, a traveller arranged on a ring runway and a detection head, wherein the detection head is arranged on the corresponding outer side of the ring runway.
Drawings
Fig. 1 is a schematic perspective view of a negative pressure control device of a cotton suction duct for a six-spindle spinning frame according to the present embodiment.
Fig. 2 is a schematic view of the control principle of the cotton suction fan in the embodiment.
Fig. 3 is a schematic diagram of the single spindle broken thread detection device of the spinning frame in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and fig. 2, the present embodiment includes a cotton suction fan 1, an air duct 6, a broken thread detection device of a spinning frame, a negative pressure sensor 3, a human-computer interface controller, a programmable controller 5, and a frequency converter 4, wherein:
the cotton suction fan 1 is arranged at one end of the air pipe 6, an air faucet 2 is arranged at the tail of the air pipe 6, the negative pressure sensor 3 is installed on the air faucet 2, the broken yarn detection device of the spinning frame is arranged on each single spindle of the spinning frame, the output end of the negative pressure sensor 3 and the output end of the broken yarn detection device of the spinning frame are respectively connected with the first input end and the second input end of the programmable controller 5, the output end of the human-computer interface controller is connected with the third input end of the programmable controller 5, the output end of the programmable controller 5 is connected with the control end of the frequency converter 4, and the output end of the frequency converter 4 is connected with the control end of the cotton suction fan 1.
As shown in fig. 3, the broken yarn detection device of the spinning frame comprises a ring 13 mounted on a ring plate 12, a traveller 11 arranged on a ring runway 14, and a detection head 10, wherein the detection head 10 is arranged at the corresponding outer side of the ring runway 14.
The drafted yarn 15 enters the traveler 11 through the yarn guide hook to be twisted, and the twisted yarn 15 is wound on the bobbin 16. In the twisting process, the yarn 15 drags the steel wire ring 11 to rotate on the steel collar 13 at a high speed, and the detection head 10 can detect a regular alternating voltage signal to obtain a steel wire ring rotation change signal. When the spinning frame breaks the yarn on a single spindle, the steel wire ring can not rotate at the previous speed until the rotation is stopped, and the alternating voltage signal detected by the detection head 10 changes, so that the yarn breaking signal can be accurately obtained and then sent to the programmable controller.
During operation, the programmable controller 5 reads in the yarn breakage signal sent by the yarn breakage detecting device on each single spindle of the spinning frame, the signal negative pressure value of the negative pressure sensor 3 and the relevant set value output by the human-computer interface controller in sequence in a communication mode, and stores the signals into the corresponding mapping register in the programmable controller 5, wherein the input mapping register in the programmable controller 5 is refreshed.
After the input sampling is finished, the programmable controller 5 starts the user program execution phase. The programmable controller 5 executes comprehensive logic operation according to a program set by a user, and performs convergence calculation on the number of yarn breaks; secondly, comparing the signal negative pressure value with a set negative pressure value, and determining that the signal negative pressure value is higher than or lower than the set negative pressure value; thirdly, PID control operation is carried out on the frequency converter according to the result parameters of the operation in the two steps.
After the user program is executed, the programmable controller enters an output refresh stage. The programmable controller 5 outputs corresponding control signals according to the result of the comprehensive logic operation of each period, so that the frequency converter 4 is controlled to output an alternating current power supply with corresponding frequency or voltage, the rotating speed of the cotton suction fan is adjusted, and the adjustment of the negative pressure in the air pipe 6 is realized.
When the programmable controller 5 does not scan the yarn broken ends, the programmable controller 5 outputs corresponding control signals to enable the cotton suction fan to operate according to the reference frequency, so that the cotton suction fan in the negative pressure system can operate at a lower frequency when the spinning frame has no yarn broken ends in each single spindle, and the working energy consumption is greatly reduced.
Meanwhile, if the air pipe signal negative pressure scanned and detected by the programmable controller is lower than the set negative pressure value, the programmable controller 5 also outputs a corresponding control signal, correspondingly increases the power frequency output by the frequency converter 4, thereby properly increasing the rotating speed of the cotton suction fan and gradually increasing the air pipe negative pressure until the negative pressure sensor 3 detects that the air pipe negative pressure reaches the set value.
In summary, compared with the prior art, the invention has the following advantages:
1. the power consumption of the cotton suction fan is greatly reduced. Because the invention adjusts and controls the rotating speed of the cotton suction fan according to the different yarn breakage quantity, when the spinning frame does not generate yarn breakage, the cotton suction fan in the negative pressure system only needs to operate at a lower frequency, the energy consumption is very small, simultaneously, the noise can be greatly reduced, and the working environment is greatly improved.
2. The cotton suction negative pressure system is easy to realize negative pressure adjustment. The invention has the functions of negative pressure detection and cotton suction fan speed regulation, and can utilize the negative pressure sensor to detect the actual condition of negative pressure according to the negative pressure requirements required by different yarn varieties spinning processes, thereby realizing accurate adjustment of the negative pressure.
3. The yarn broken ends and the cotton suction negative pressure adjusting work are synchronous. As the yarn breakage detection device of the spinning machine is arranged, the yarn breakage negative pressure system is correspondingly started when the yarn breakage occurs, and the working synchronism is strong.
4. The automation degree is high. Because the closed-loop control mode that the broken thread detection and the negative pressure detection of the spinning frame are matched with each other is arranged, the degree of automation is high.
5. The negative pressure detection is accurate, and the installation is convenient.
Claims (3)
1. A negative pressure energy-saving control device of a cotton suction air pipe of a spinning frame comprises a cotton suction fan (1) and an air pipe (6), wherein the cotton suction fan (1) is arranged at one end of the air pipe (6), and is characterized by further comprising a spinning frame broken yarn detection device, a negative pressure sensor (3), a human-computer interface controller, a programmable controller (5) and a frequency converter (4), the spinning frame broken yarn detection device is arranged on each single spindle of the spinning frame, the negative pressure sensor (3) is arranged on the air pipe (6), the output end of the negative pressure sensor (3) and the output end of the spinning frame broken yarn detection device are respectively connected with a first input end and a second input end of the programmable controller, the output end of the human-computer interface controller is connected with a third input end of the programmable controller (5), the output end of the programmable controller (5) is connected with the control end of the frequency converter (4), the output end of the frequency converter (4) is connected with the input end of the cotton suction fan (1).
2. The negative pressure energy-saving control device of the cotton suction duct of the spinning frame as claimed in claim 1, wherein the air nozzle (2) is arranged at the tail of the air duct (6), and the negative pressure sensor (3) is mounted on the air nozzle (2).
3. The negative pressure energy-saving control device of the cotton suction duct of the spinning frame according to claim 2, wherein the thread breakage detection device of the spinning frame comprises a ring (13) mounted on a ring plate (12), a traveller (11) arranged on a ring track (14) and a detection head (10), and the detection head (10) is arranged on the corresponding outer side of the ring track (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354209.8A CN112962183A (en) | 2021-03-23 | 2021-03-23 | Negative pressure energy-saving control device for cotton suction air pipe of spinning frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110354209.8A CN112962183A (en) | 2021-03-23 | 2021-03-23 | Negative pressure energy-saving control device for cotton suction air pipe of spinning frame |
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| Publication Number | Publication Date |
|---|---|
| CN112962183A true CN112962183A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110354209.8A Pending CN112962183A (en) | 2021-03-23 | 2021-03-23 | Negative pressure energy-saving control device for cotton suction air pipe of spinning frame |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326574A (en) * | 2021-12-25 | 2022-04-12 | 常州纺织服装职业技术学院 | Automatic control method and system for spun yarn broken end cotton suction and network side server |
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2021
- 2021-03-23 CN CN202110354209.8A patent/CN112962183A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326574A (en) * | 2021-12-25 | 2022-04-12 | 常州纺织服装职业技术学院 | Automatic control method and system for spun yarn broken end cotton suction and network side server |
| CN114326574B (en) * | 2021-12-25 | 2024-04-12 | 常州纺织服装职业技术学院 | Spun yarn broken end cotton suction automatic control method and system and network side server |
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