CN102534896B - Yarn twisting broken end detecting method for spinning machine - Google Patents
Yarn twisting broken end detecting method for spinning machine Download PDFInfo
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- CN102534896B CN102534896B CN201210009964.3A CN201210009964A CN102534896B CN 102534896 B CN102534896 B CN 102534896B CN 201210009964 A CN201210009964 A CN 201210009964A CN 102534896 B CN102534896 B CN 102534896B
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Abstract
The invention relates to a yarn twisting broken end detecting method for a spinning machine. Sensitive components used for detecting corresponding steel wire rings rotating along steel collar runways are arranged on a steel collar plate and acquire rotation change signals of the corresponding steel wire rings to input to a process circuit and supply for a central processing unit or a pulse detecting unit, the central processing unit or pulse detecting unit judges the processed rotation change signals of the steel wire rings, when the processed rotation change signals of the steel wire rings are judged not to be continuous pulse signals by the central processing unit or the pulse detecting unit, yarn breakage signals are output and an alarm is sent through an alarm. The rotation change signals of the steel wire rings are detected without contacts, and the detecting mechanism utilizing the yarn twisting broken end detecting method is reasonable in structure, convenient in mounting, accurate in detecting, fast in detection response, few in interference to the outside, reliable in working and long in service life.
Description
Technical field
The present invention relates to a kind of Yarn twisting broken end detecting method for spinning machine, belong to textile machine ring throstle Yarn break detection technique field.
Background technology
In the yarn process processed of fine spining machine, rove is entered to drafter from hanging to split to deliver to leading reed horn mouth, by the pneumatic apparatus for collecting in drafter in centralizing pipe under negative-pressure air-flow effect, when making fiber strip filoplume along with grid ring rotational conveyance, on air-flow guide groove, gathered, reach the powerful requirement that reduces Yarn filoplume and increase yarn, yarn after gathering enters steel traveler twisting by twizzle, and will on the reel for yarn winding reel after twisting, be shaped.
In the twisting process of spun yarn, the yarn of the front roller output of drafter is through being arranged on the twizzle on thread board, again through being arranged on the steel traveler on rings, in the rotation process of stator by yarn around to being tightly placed on the bobbin of spindle, when spindle revolution, by affecting of yarn tension, steel traveler is turned round along rings, steel traveler drives yarn to return yarn while going around along rings and just obtains a turn, and be arranged on ring rail rings as the rotating track of steel traveler, in twisting process yarn in tow steel traveler on rings, make high speed rotary, in the effect of centrifugal force, the inner arc that makes the interior pin of steel traveler be close to rings is to slide on inner track, conventionally the speed of gyration of steel traveler on rings runway can reach 30m/s～55m/s left and right, and when after the Yarn break of one of them position of splitting, this steel traveler that splits position can not normally turn round.Twist at present the Yarn break detection of a side for fine spining machine, the touring mobile detection mode of a kind of employing, to establish in ring rail front side a runway is installed, a magnetoelectric transducer is arranged on runway, induce the turn signal of a steel traveler that respectively splits by mobile magnetoelectric transducer, and by wire by signal in central processing unit, to detect each ingot position breakage situation.But owing to needing runway to be mounted in the front portion of ring rail, and the existence of runway all drives inconvenience for manual operation and cleaning, especially a magnetoelectric transducer detects the steel traveler of each ingot position in moving process, owing to up to a hundred spindles being installed on a locomotive, therefore magnetoelectric transducer can not be found in time the ingot position of Yarn break and send broken yarn signal.Also has at present a kind of device that each ingot position Yarn break is detected for this reason, while adopting temperature sensor to be arranged on fine spining machine spinning, rub on hot position, be directly installed on the interior of ring rail by temperature sensor or by spring top on rings wall, judge Yarn break by the difference variation of temperature sensor direct-detection rings friction temperature.In time the Yarn break of every ingot position is detected although this structure can solve, and can not affect operation and clean.But rely on the detection rings temperature difference can not accurately judge whether yarn occurs broken end, while driving steel traveler revolution due to spindle in the time turning round, rings can be subject to the impulsive force of steel traveler, and the size of this impulsive force is tens times of summation of all other power that rings bears, so make rings and steel traveler accelerate decline, because rings is in a working cycle process, the friction temperature of rings is not a definite value, involving of fine spining machine is different with the yarn variety of twisting, therefore the requirement difference of Yarn twisting coefficient, therefore adopt the rings temperature difference to judge that the accuracy rate of Yarn break is not high.In addition, due in spinning process, although fine spining machine is provided with dust collection mechanism, the some fibre that still can float in air, and when fiber-covered is on temperature sensor, also can reduce accuracy of detection.
Summary of the invention
The object of this invention is to provide one rational in infrastructure, easy for installation, detect accurately, be swift in response, disturb to external world little induction type fine spining machine Yarn break testing agency
The present invention is that the technical scheme achieving the above object is: a kind of Yarn twisting broken end detecting method for spinning machine, it is characterized in that: on ring rail, have for detection of the edge corresponding each sensing element of the rotating each steel traveler of rings runway separately, each sensing element gathers each self-corresponding steel traveler revolution variable signal and inputs to treatment circuit, and offer CPU or pulse detecting unit, CPU or pulse detecting unit judge steel traveler revolution variable signal after treatment, in the time that CPU or pulse detecting unit judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
The present invention has the sensing element corresponding to each rings on ring rail, gather each self-corresponding steel traveler revolution variable signal by each sensing element, because spindle is to drive yarn cylinder to rotate by certain speed, therefore driving steel traveler by yarn is also to carry out gyration according to certain speed, thereby can relatively change and obtain steel traveler and turn round variable signal with rings by steel traveler, once when yarn is had no progeny, because steel traveler can not be by existing rule revolution and until stop revolution, steel traveler that sensing element detects revolution variable signal also changes thereupon, therefore each sensing element gathers rapidly separately and obtains the signal of telecommunication after the treated processing of circuit of steel traveler revolution variable signal, when this steel traveler revolution variable signal after treatment offers after CPU or pulse detecting unit, whether still CPU or pulse detecting unit can judge the steel traveler revolution variable signal continuous impulse signal receiving, in the time that CPU or pulse detecting unit judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm, can accurately obtain thus broken yarn signal, and the broken yarn situation of the each ingot yarn of timely and effective detection, effectively raise wiring workman's operating efficiency, the waste of the yarn reducing.The each ingot of the present invention has sensing element on position, rational in infrastructure, compact, easy for installation, can not affect normal operating, detect fast response time, due to be contactless detects obtain steel traveler turn round variable signal, reliable operation, long service life, can effectively improve the detection accuracy of Yarn break.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 is the first structural representation of Yarn twisting broken end detecting method for spinning machine of the present invention.
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Fig. 3 is one of electrical schematic diagram of the first structure of the present invention.
Fig. 4 be the first structure of the present invention electrical schematic diagram two.
Fig. 5 is the second structural representation of invention Yarn twisting broken end detecting method for spinning machine.
Fig. 6 is the B-B sectional structure schematic diagram of Fig. 5.
Fig. 7 is the third structural representation of Yarn twisting broken end detecting method for spinning machine of the present invention.
Fig. 8 is the 4th kind of structural representation of Yarn twisting broken end detecting method for spinning machine of the present invention.
Fig. 9 is the electrical schematic diagram of the 4th kind of structure of the present invention.
Figure 10 is the 5th kind of structural representation of Yarn twisting broken end detecting method for spinning machine of the present invention.
Figure 11 is the 6th kind of structural representation of Yarn twisting broken end detecting method for spinning machine of the present invention.
Figure 12 is the electrical schematic diagram of the 6th kind of structure of the present invention.
Wherein: 1-support, 21-capacity plate antenna, 22-luminous tube, 23-photoelectric receiving device, 24-tracheae shower nozzle, 25-pressure sensor, 3-steel traveler, 4-yarn, 5-rings, 6-ring rail.
Detailed description of the invention
See shown in Fig. 1～12, Yarn twisting broken end detecting method for spinning machine of the present invention, on ring rail 6, have for detection of the edge corresponding each sensing element of the rings rotating each steel traveler 3 of 5 runway separately, can on each ingot position, sensing element be installed, each sensing element gathers each self-corresponding steel traveler revolution variable signal and inputs to treatment circuit, treatment circuit offers CPU or the pulse detecting unit signal of telecommunication after this steel traveler revolution variable signal is processed, CPU or pulse detecting unit are to judging steel traveler revolution variable signal after treatment, in the time that CPU or pulse detecting unit judge that steel traveler revolution variable signal is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm, this alarm can adopt photoelectric alarm, audio alarm or other alarm, CPU of the present invention also can record by memory the record of the broken yarn situation of yarn, to formulate effective maintenance project.The present invention also can calculate the signal of telecommunication of the steel traveler revolution variable signal obtaining by CPU, to obtain measured steel traveler gyrofrequency, CPU and given steel traveler gyrofrequency contrast, when steel traveler gyrofrequency is between (5/ π R)～(30/ π R), and R is the diameter of ring of this ingot position, now CPU judges that this spindle skids, and reminds operating personnel equally by alarm, notes the yarn at this ingot position place.
Sensing element of the present invention is photoelectric receiving device 23, for provide the luminous tube 22 of light source to be arranged on ring rail 6 to photoelectric receiving device 23.See shown in Fig. 1,2, the launching centre axis of luminous tube 22 of the present invention and the receiving center crossing point of axes of photoelectric receiving device 23 are positioned at the outer peripheral face of rings 5 runways, detect the variation of light break-make obtain steel traveler revolution variable signal by photoelectric receiving device 23.The present invention utilizes the outer peripheral face of rings 5 runways to can be used as reflecting surface, in the time that steel traveler 3 rotates through luminous tubes 22 and photoelectric receiving device 23 intersection point along rings 5 ways, steel traveler 3 can sponge light, make photoelectric receiving device 23 not receive light, and when steel traveler 3 is not at luminous tube 22 during with photoelectric receiving device 23 intersection point, light can be reflexed on photoelectric receiving device 23 by the reflecting surface of rings 5, therefore photoelectric receiving device 23 can constantly detect constantly reflection and absorption light of steel traveler 3, turn round variable signal and obtain steel traveler, the output of photoelectric receiving device 23 is connected with treatment circuit, as shown in Figure 3, a kind of electrical schematic diagram of the present invention, this luminous tube DS1 is connected to resistance R 1, for emission of light, and photoelectric receiving device Q1 one end ground connection, the other end connects power supply by resistance R 2, this treatment circuit adopts voltage comparator U1, luminous tube 22 will transmit and launch after modulation, photoelectric receiving device 23 receives the signal of modulation and connects the normal phase input end of voltage comparator U1, resistance R 3 connects the negative-phase input of voltage comparator U1, and resistance R 3 is connected between power supply and ground, reference voltage is provided to voltage comparator U1, by voltage comparator U1 output electrical signals, the output termination CPU U2 of voltage comparator U1, when luminous tube 22 and photoelectric receiving device 23 detect steel traveler revolution variable signal through voltage comparator U1 relatively after, steel traveler revolution variable signal after treatment is offered to CPU U2, or as shown in Figure 4, the output termination pulse detecting unit U3 of voltage comparator U1, steel traveler revolution variable signal after treatment is offered to pulse detecting unit U3, by pulse detecting unit U3, steel traveler revolution variable signal after treatment is judged, this pulse detecting unit U3 adopts 74HC74, 74HC273, the D flip-flop such as CC4013 or CC4098, in the time that CPU U2 or pulse detecting unit U3 judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm, alarm is luminescent diode DS2, this light diode DS2 connects power supply by resistance R 4, in the time of Yarn break, send signal by alarm, the present invention also can adopt the alarm such as audio frequency or display.
Sensing element of the present invention is photoelectric receiving device 23, is arranged on ring rail 6 for the luminous tube 22 that light source is provided to photoelectric receiving device.See shown in Fig. 5～7, the launching centre axis of luminous tube 22 and the receiving center dead in line of photoelectric receiving device 23, or the launching centre axis of luminous tube 22 and the receiving center axes intersect of photoelectric receiving device 23, and the angle with respect to the receiving center axis of photoelectric receiving device 23 is less than ± and 5 °, the outer peripheral face of the launching centre axis of luminous tube 22 and the receiving center axle of photoelectric receiving device 23 and rings 5 runways is tangent, or as shown in Figure 7, and the launching centre axis of luminous tube 22 overlaps with the end face of rings runway with the receiving center axle of photoelectric receiving device 23, detect the variation of light break-make by photoelectric receiving device 23 and obtain steel traveler revolution variable signal, luminous tube 22 emits beam, and photoelectric receiving device 23 receives light, between steel traveler 3 rotates through luminous tubes 22 and photoelectric receiving device 23 along rings 5 runways time, steel traveler 3 can block emission of light, make photoelectric receiving device 23 not receive light, and in the time that steel traveler 3 is not between luminous tube 22 and photoelectric receiving device 23, light can be received by photoelectric receiving device 23, because steel traveler 3 is to drive lower regular rotation by yarn 4, therefore detect regular light break-make variation by photoelectric receiving device 23 and obtain steel traveler revolution variable signal.See Fig. 5, shown in 6, when steel traveler revolution once can obtain a steel traveler revolution variable signal, as shown in Figure 7, when steel traveler 3 rev of the present invention, can obtain two steel traveler revolution variable signals, its accuracy of detection is higher, when after yarn 4 broken ends, because the change of steel traveler speed of gyration is until stop the rotation, therefore photoelectric receiving device 23 can constantly detect the light that steel traveler 3 constantly blocks and do not block, turn round variable signal and obtain steel traveler, the output of photoelectric receiving device 23 is connected with treatment circuit, see Fig. 3, shown in 4, treatment circuit of the present invention is voltage comparator U1, when luminous tube, DS1 emits beam, and photoelectric receiving device 23 receives light to detect steel traveler revolution variable signal, the signal of telecommunication is provided to CPU U2 or pulse detecting unit U3 through voltage comparator UI after relatively, CPU U2 or pulse detecting unit U3 judge steel traveler revolution variable signal after treatment, in the time that CPU U2 or pulse detecting unit U3 judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
Sensing element of the present invention is pressure sensor 25, for providing the tracheae shower nozzle 24 of source of the gas to be arranged on ring rail 6, as shown in Figure 8, tracheae shower nozzle 24 of the present invention and pressure sensor 25 are arranged on ring rail 6 and are positioned at the same side of rings 5, the central axis of tracheae shower nozzle 24 is the outer peripheral face to rings 5 runways just, detects stream pressure variation obtain steel traveler revolution variable signal by pressure sensor 25.In the time that tracheae shower nozzle 24 sprays air-flow, pressure sensor 25 detects the size of air-flow, in the time that steel traveler 3 sprays air-flow along rings 5 runway rotations by tracheae shower nozzle 24, because the steel traveler 3 of rotation is under the effect of centrifugal force and when rough air, the stream pressure that pressure sensor 25 is detected diminishes, and in the time of air-flow that steel traveler 3 does not spray by tracheae shower nozzle 24, this air-flow is sprayed onto rings 5 runway outer peripheral faces, air-flow is reflected, make pressure sensor 25 detect that the pressure of air-flow is larger, because steel traveler 3 is by rotating under the regular drive of yarn 4, when after yarn 4 broken ends, steel traveler speed of gyration changes until stop the rotation, therefore pressure sensor 25 detects the stream pressure size variation that tracheae shower nozzle 24 sprays, steel traveler revolution variable signal is also changed thereupon, therefore pressure sensor 25 can detect the variation of stream pressure size and obtain steel traveler revolution variable signal, pressure sensor 25 is by the steel traveler revolution variable signal input processing circuit of the stream pressure size gathering, by treatment circuit, steel traveler revolution variable signal is processed to rear output electrical signals, offer CPU U2 or pulse detecting unit U3.As shown in Figure 9, treatment circuit of the present invention comprises the pressure and voltage conversion circuit and the voltage comparator U1 that are connected, pressure and voltage conversion circuit comprise resistance R 5～R9, transport and placing device U4, U5 and operational amplifier U6 and triode Q2, pressure sensor 25 adopts bridge-type resistance-strain chip structure, be the resistance R b1 that resistance is identical, Rb2, the bridge circuit that Rb3 and Rb4 form, negative supply VEE through 6 points of resistance R 5 and resistance R voltage necessarily connects the normal phase input end of transport and placing device U4, negative supply VEE connects the inverting input of transport and placing device U4 through resistance R 7, output is through triode Q2, the node of resistance R b3 and resistance R b4, the positive input end grounding of transport and placing device U5, the node of anti-phase input terminating resistor Rb1 and Rb3, the node of output connecting resistance Rb1 and Rb2, power supply is input to transport and placing device U4 after resistance R 5 and R6 dividing potential drop, form constant-current source by transport and placing device U4 and triode Q2 and resistance R 7 again, and utilize transport and placing device U5 virtual short characteristic, make transport and placing device U5 output no-voltage, the normal phase input end of bridge circuit input termination operational amplifier U6, the resistance R 8 being connected with ground connects the reverse input end of operational amplifier U6, the normal phase input end of its output termination voltage comparator U1, resistance R 9 is connected on output and the inverting input of operational amplifier U6, when posting resistance R b1, Rb2, when the film of Rb3 and Rb4 is subject to atmospheric pressure deformation, be positioned at the resistance strain gage strain stretch of thin film center and become large, and the resistance strain gage that is positioned at edge should compress and diminish, by the resistance strain gage of constant current source power supply, because changing, resistance sizes produces voltage swing variation, pass through again operational amplifier U6 by multiple certain voltage amplification, air pressure change is converted into voltage change the most at last, resistance R 3 connects the inverting input of voltage comparator U1, and resistance R 3 is connected between power supply and ground, a reference voltage is provided to voltage comparator U1, output termination CPU U2 or the pulse detecting unit U3 of voltage comparator U1, steel traveler revolution variable signal after treatment is offered to CPU U2 or pulse detecting unit U3, CPU U2 or pulse detecting unit U3 judge steel traveler revolution variable signal after treatment, in the time that CPU U2 or pulse detecting unit U3 judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
Sensing element of the present invention is pressure sensor 25, for providing the tracheae shower nozzle 24 of source of the gas to be arranged on ring rail 6, as shown in Figure 10, tracheae shower nozzle 24 is oppositely arranged with pressure sensor 25, tracheae shower nozzle 24 and pressure sensor 25 are arranged on ring rail 6, the outer peripheral face of the central axis of tracheae shower nozzle 24 and rings 5 runways is tangent, or the central axis of tracheae shower nozzle 24 is positioned at the end face of rings 5 runways, detects stream pressure change and obtain steel traveler revolution variable signal by pressure sensor 25.In the time that tracheae shower nozzle 24 sprays air-flow, pressure sensor 25 detects stream pressure size, in the time that steel traveler 3 rotates and sprays air-flow by tracheae shower nozzle 24 along rings 5 runways, because the steel traveler 3 of rotation is under the effect of centrifugal force and rough air, therefore the stream pressure that makes pressure sensor 25 detect diminishes, and in the time of air-flow that steel traveler 3 does not spray by tracheae shower nozzle 24, this air-flow is sprayed onto on pressure sensor 25, pressure sensor 25 detects that stream pressure is larger, because steel traveler 3 is that warp yarn 4 drives and regular rotation, the variation of the stream pressure size that therefore pressure sensor 25 detects and obtain the revolution variable signal of steel traveler 3, when after yarn 4 broken ends, because steel traveler speed of gyration changes until stop the rotation, therefore pressure sensor 25 detects the stream pressure size variation that tracheae shower nozzle 24 sprays, steel traveler revolution variable signal is also changed thereupon, therefore pressure sensor 25 can detect the variation of stream pressure size and obtain steel traveler revolution variable signal, pressure sensor 25 is by the steel traveler revolution variable signal input processing circuit of the stream pressure size gathering, by treatment circuit, steel traveler revolution variable signal is processed and output electrical signals, offer CPU U2 or pulse detecting unit U3, as shown in Figure 9, pressure and voltage conversion circuit comprise resistance R 5～R9, transport and placing device U4, U5 and operational amplifier U6 and triode Q2, treatment circuit of the present invention comprises the pressure and voltage conversion circuit and the voltage comparator U1 that are connected, pressure sensor 25 adopts bridge-type resistance-strain chip structure, when posting resistance R b1, Rb2, when the film of Rb3 and Rb4 is subject to atmospheric pressure deformation, be positioned at the resistance strain gage strain stretch of thin film center and become large, and the resistance strain gage that is positioned at edge should compress and diminish, by the resistance strain gage of constant current source power supply, because changing, resistance sizes produces voltage swing variation, pass through again operational amplifier U6 by multiple certain voltage amplification, air pressure change is converted into voltage change the most at last, resistance R 3 connects the inverting input of voltage comparator U1, and resistance R 3 is connected between power supply and ground, a reference voltage is provided to voltage comparator U1, output termination CPU U2 or the pulse detecting unit U3 of voltage comparator U1, and steel traveler revolution variable signal after treatment is offered to CPU U2 or pulse detecting unit U3, CPU U2 or pulse detecting unit U3 judge steel traveler revolution variable signal after treatment, in the time that CPU U2 or pulse detecting unit U3 judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
Sensing element of the present invention is capacity plate antenna 21, obtains steel traveler revolution variable signal by the capacitance change of capacity plate antenna 21.As shown in Figure 11, capacity plate antenna 21 of the present invention is arranged on ring rail 6 by support 1, and capacity plate antenna 21 is just to rings 5, and the output of capacity plate antenna 21 is connected with treatment circuit.After switching on power, capacity plate antenna 21 detects steel traveler and goes back to variable signal, because steel traveler 3 is as the medium between capacity plate antenna 21, in the time that entering capacity plate antenna 21 as medium, steel traveler 3 enters in detection range, the electric capacity of capacity plate antenna 21 diminishes, and in the time that steel traveler 3 departs from the detection range of capacity plate antenna 21, the electric capacity of capacity plate antenna 21 changes from small to big, therefore detect regular capacitance variations by capacity plate antenna 21 and obtain steel traveler revolution variable signal.As shown in Figure 12, treatment circuit of the present invention comprises the electric capacity and voltage conversion circuit and the voltage comparator U1 that connect successively mutually, this electric capacity and voltage conversion circuit comprise signal generator, operational amplifier U7 and analog multiplier U8 and low pass filter composition, capacity plate antenna CX1 two ends are respectively by capacitor C 1 and capacitor C 2 ground connection, the normal phase input end of operational amplifier U7 and output are connected to capacitor C in parallel 3 and resistance R 10, the reverse inter-input-ing ending grounding of operational amplifier U7, its output termination analog multiplier U8, signal generator is connected between capacity plate antenna CX1 and analog multiplier U8, it is that high frequency sinusoidal signal is through tested capacity plate antenna CX1 that signal generator produces driving source, again by operational amplifier U7 amplifier and analog multiplier U8 and low pass filter output voltage, connect the normal phase input end of voltage comparator U1, resistance R 3 connects the negative-phase input of voltage comparator U1, resistance R 3 is connected between power supply and ground, reference voltage is provided to voltage comparator U1, output termination CPU U2 or the pulse detecting unit U3 of voltage comparator U1, CPU U2 or pulse detecting unit U3 judge steel traveler revolution variable signal after treatment, in the time that CPU U2 or pulse detecting unit U3 judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
Claims (2)
1. a Yarn twisting broken end detecting method for spinning machine, it is characterized in that: on ring rail, have for detection of the edge corresponding each sensing element of the rotating each steel traveler of rings runway separately, described sensing element is pressure sensor, for providing the tracheae shower nozzle of source of the gas to be arranged on ring rail, and tracheae shower nozzle and pressure sensor are positioned at the same side of rings, the central axis of tracheae shower nozzle is the outer peripheral face to rings runway just, detect stream pressure variation by pressure sensor and obtain steel traveler revolution variable signal, each sensing element gathers each self-corresponding steel traveler revolution variable signal and inputs to treatment circuit, and offer CPU or pulse detecting unit, CPU or pulse detecting unit judge steel traveler revolution variable signal after treatment, in the time that CPU or pulse detecting unit judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
2. a Yarn twisting broken end detecting method for spinning machine, it is characterized in that: on ring rail, have for detection of the edge corresponding each sensing element of the rotating each steel traveler of rings runway separately, described sensing element is pressure sensor, for providing the tracheae shower nozzle of source of the gas to be arranged on ring rail, tracheae shower nozzle and pressure sensor are oppositely arranged, and the outer peripheral face of the central axis of tracheae shower nozzle and rings runway is tangent, or the central axis of tracheae shower nozzle is positioned at the end face of rings runway, detect stream pressure variation by pressure sensor and obtain steel traveler revolution variable signal, each sensing element gathers each self-corresponding steel traveler revolution variable signal and inputs to treatment circuit, and offer CPU or pulse detecting unit, CPU or pulse detecting unit judge steel traveler revolution variable signal after treatment, in the time that CPU or pulse detecting unit judge that steel traveler revolution variable signal after treatment is not continuous impulse signal, export broken yarn signal and pass through alarm equipment alarm.
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| CN102995188A (en) * | 2012-11-30 | 2013-03-27 | 宁波瑞能电子科技有限公司 | Broken yarn detection mechanism |
| CN102995186A (en) * | 2012-11-30 | 2013-03-27 | 宁波瑞能电子科技有限公司 | Monitoring system of broken yarn detection system |
| CN106087152B (en) * | 2016-08-24 | 2018-06-19 | 宁夏如意科技时尚产业有限公司 | The detection device and detection method of spun yarn weak twist and broken string |
| CN106939455B (en) * | 2017-05-20 | 2023-10-13 | 杭州电子科技大学 | Yarn breakage detection circuit of ring spinning frame |
| CN108950757B (en) * | 2018-09-06 | 2023-07-07 | 浙江绿洲纺织股份有限公司 | Two-for-one twister |
| CN111926427B (en) * | 2020-08-07 | 2021-12-28 | 苏州汇川技术有限公司 | Single-spindle detection system, control method, device and storage medium |
| CN112834523B (en) * | 2021-01-03 | 2022-10-28 | 福建省万物智联科技有限公司 | Broken yarn detection circuit |
| CN113089141A (en) * | 2021-04-09 | 2021-07-09 | 深圳市嘉友智控科技有限公司 | Photoelectric detection circuit for spindle of spinning frame |
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| CN1688756A (en) * | 2002-08-13 | 2005-10-26 | 里特机械公司 | Sensor system for a ring spinning machine |
| CN1651623A (en) * | 2004-02-04 | 2005-08-10 | 里特机械公司 | Method for mfg. core-yarn |
| CN1952230A (en) * | 2006-10-17 | 2007-04-25 | 沈阳华岳机械有限责任公司 | Automatic centrifugal spinning frame |
| CN102304793A (en) * | 2011-08-24 | 2012-01-04 | 东华大学 | Broken yarn detection device for Sirospun |
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