CN109629107A - A kind of yarn detection method and knitting machine - Google Patents
A kind of yarn detection method and knitting machine Download PDFInfo
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- CN109629107A CN109629107A CN201910007625.3A CN201910007625A CN109629107A CN 109629107 A CN109629107 A CN 109629107A CN 201910007625 A CN201910007625 A CN 201910007625A CN 109629107 A CN109629107 A CN 109629107A
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000009940 knitting Methods 0.000 title claims description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 91
- 239000004753 textile Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims description 37
- 239000007924 injection Substances 0.000 claims description 37
- 230000005236 sound signal Effects 0.000 claims description 24
- 238000012545 processing Methods 0.000 claims description 16
- 238000009954 braiding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000009987 spinning Methods 0.000 description 10
- 230000009245 menopause Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
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Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
- D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
- D04B35/14—Indicating, warning, or safety devices, e.g. stop motions responsive to thread breakage
Abstract
The invention discloses a kind of yarn detection methods, for detecting the yarn on-off on textile machine and tensioning situation, comprising: inject special frequency channel sound wave to the yarn in yarn mechanism or yarn guide mechanism to textile machine；Pick up sound wave entrained when the yarn path pick-up point；The special frequency channel acoustic wave energy being previously implanted is extracted from the sound wave；Tension or the on off operating mode of the yarn are judged according to the special frequency channel acoustic wave energy.The state that yarn will be pulled off can be accurately predicted by above-mentioned yarn detection method, so that alarm avoids breaking in advance, can be significantly reduced the operation movement of operator, the activity duration reduces the qualification of labour skill to improve the labor efficiency of operator.
Description
Technical field
The present invention relates to textile technology field more particularly to a kind of yarn detection method and corresponding knitting machines.
Background technique
Knitting machine is exactly the raw material such as yarn to be processed into the machinery that knitted fabric is woven into after silk thread.Textile technology stream at all times
The development of journey and equipment is designed in response to textile raw material, and yarn is usually all wrapped in spool, is worked as in textile manufacturing
Will lead to when meeting obstructions yarn bear pulling force it is excessive and theres is a phenomenon where break, at this point, for prevent excessively unqualified knitted fabric
Output, textile manufacturing should be stopped in time after disconnecting, however, since the stability of monitoring device performance is poor, thus nothing
Method timely feeds back disconnection information to the producer.
In the prior art, Chinese patent " broken yarn detection device " (publication number CN202744106U) discloses a kind of packet
The broken yarn detection device of tension seat, menopause tablet, infrared probe, hole and card slot is included, the principle is as follows: tension seat in equipment
It is equipped with menopause tablet, infrared probe is placed in the lower section of menopause tablet, and is equipped on menopause tablet and is worn for yarn obtained by spinning
The hole (or slot) crossed.During spinning, the yarn of output can be by the hole on menopause tablet, when the yarn of output is unexpected
When being interrupted, menopause tablet meeting free-falling, and then infrared probe will detect that menopause tablet falls.Believe when infrared detector issues
Number when, illustrate that the yarn across the menopause tablet has broken.However the technology can only could be sent out when yarn has occurred and that broken string
Alarm signal out, and can not detect overtension will face the yarn of fracture, so that knitting machine stops because yarn breaks
When, often partial disconnection is to form unqualified knitted fabric into knitting mechanism.
Other in the prior art, also by using piezoelectric transducer detect yarn its pressure signal is judged
What whether yarn disconnected.This method needs every yarn to pass through the aperture equipped with piezoelectric transducer, and yarn is in tension
In the case of can have certain pressure to sensor, pressure signal is converted to electric signal and sends CPU control platform to by sensor,
The operation of CPU control machine.This method realization principle is relatively simple, and research and development and use cost are lower, but every line has
It is more troublesome across aperture, is taken a long time and unfavorable when wiring there is still a need for line is passed through aperture in the case where if it happens breaking
In the continuity for improving production.Usually yarn has shake simultaneously, so yarn is not very steady to the pressure of sensor
It is fixed, it is easy to which that the case where generating erroneous judgement, fluency and production efficiency to production all have a great impact.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides a kind of yarn detection method, for detecting textile machine
Yarn on-off and tensioning situation, specifically include:
Special frequency channel sound wave is injected to the yarn in yarn mechanism or yarn guide mechanism to textile machine；
Pick up sound wave entrained when the yarn path pick-up point；
The special frequency channel acoustic wave energy being previously implanted is extracted from the sound wave；
Tension or the on off operating mode of the yarn are judged according to the special frequency channel acoustic wave energy.
Preferably, the step judges tension or the on off operating mode of the yarn according to the special frequency channel acoustic wave energy,
Specifically include: when the special frequency channel acoustic wave energy is lower than first threshold, then the detected yarn is off-state.
Preferably, the step judges tension or the on off operating mode of the yarn according to the special frequency channel acoustic wave energy,
Specifically include: when the special frequency channel acoustic wave energy is higher than second threshold, then the detected yarn, which is in, bears pulling force mistake
Big tension.
Preferably, the yarn detection method further include:
What is respectively connected to more different yarns respectively has different spies to injection in yarn mechanism or yarn guide mechanism
Determine the sound wave of frequency range；Pick up sound wave entrained when the every yarn path pick-up point；Respectively entrained by every one thread
It is extracted in sound wave and corresponding is previously implanted special frequency channel acoustic wave energy；According to the attenuation degree and frequency range of special frequency channel acoustic wave energy
Information is in one or more yarn of broken string or tension to confirm.
Preferably, the yarn detection method further include:
There are different special frequency channels to multiple positions injection in yarn mechanism or yarn guide mechanism to yarn respectively
Sound wave, or sound wave entrained when the multiple pick-up points of the yarn path is picked up respectively；It extracts and is previously implanted from the sound wave
Special frequency channel acoustic wave energy；Tension or the on-off shape of the yarn multiple portions are judged according to the special frequency channel acoustic wave energy
State.
Preferably, the yarn detection method further include: the ambient noise around the pick-up point of the yarn path is obtained,
And the ambient noise is rejected from the sound wave of pickup.
The invention also discloses a kind of knitting machines, including give yarn mechanism, yarn guide mechanism and knitting mechanism, described to give yarn
Mechanism unwinds yarn from tube and warp yarn guiding mechanism is sent into knitting mechanism, further include: sound wave injection device,
For injecting special frequency channel sound wave to the yarn in yarn mechanism or yarn guide mechanism；Sound pick up equipment, for pick up pass through through
The sound wave of yarn transmitting；Apparatus for processing audio, for extracting special frequency channel acoustic wave energy from the sound wave of pickup, and according to described
Special frequency channel acoustic wave energy judges tension or the on off operating mode of the yarn.
Preferably, the sound wave injection device includes audio-frequency generator and loudspeaker, and the loudspeaker is placed in the yarn
Cylinder lower section, the audio-frequency generator are used to generate the audio signal of default frequency range and convert the audio signal to by loudspeaker
It is injected after special frequency channel sound wave on the yarn of the tube.
Preferably, the sound wave injection device is used to inject special frequency channel sound to the yarn by part yarn guide mechanism
Wave.
Preferably, the sound pick up equipment is installed on the yarn end of incoming cables of the knitting mechanism, reaches the yarn for obtaining
Sound wave entrained by the yarn of line end of incoming cables.
The present invention monitors the special frequency channel sound wave on the yarn by injecting special frequency channel sound wave on yarn
Conduction condition shows that monitored yarn has been broken when the special frequency channel acoustic wave energy is lower than predetermined low level, when specific frequency
Section acoustic wave energy illustrates that monitored yarn is in tensioning state when being higher than default high level, can find at the first time through the above way
The broken string situation of yarn, and can accurately predict the state that yarn will be pulled off, so that alarm avoids breaking in advance.By and
Shi Faxian broken string will break, and can be significantly reduced the operation movement of operator, activity duration, to improve the labor of operator
Efficiency of movement reduces the qualification of labour skill.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow diagram of yarn detection method disclosed in one embodiment of the invention.
Fig. 2 is the flow diagram of yarn detection method disclosed in another embodiment of the present invention.
Fig. 3 is the flow diagram of yarn detection method disclosed in another embodiment of the present invention.
Fig. 4 is the flow diagram of yarn detection method disclosed in another embodiment of the present invention.
Fig. 5 is the structural schematic diagram of knitting machine disclosed in one embodiment of the invention.
Fig. 6 is the structural schematic diagram of sound wave injection device disclosed in one embodiment of the invention.
Fig. 7 is the structural schematic diagram of sound wave injection device disclosed in another embodiment of the present invention.
Fig. 8 is the schematic illustration of the broken string prior-warning device of yarn disclosed in one embodiment of the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, ordinary skill
Personnel's every other embodiment obtained under the premise of being not necessarily to creative work, shall fall within the protection scope of the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Unless otherwise defined, the technical term or scientific term used herein should be in fields of the present invention and has
The ordinary meaning that the personage of general technical ability is understood.Used in present patent application specification and claims " the
One ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different
Component part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
Attached drawing 1 is a kind of flow diagram of yarn detection method disclosed in an embodiment, for detecting knitting machine, weaving
Yarn on all kinds of textile machines such as machine, spinning machine or spin on-off or tensioning situation in machine running process, lead below
It will be to be specifically included on knitting machine to the application of the yarn detection method:
S101 injects special frequency channel sound wave to the yarn in yarn mechanism or yarn guide mechanism to textile machine.
Start to emit preset special frequency channel sound in the first time sound wave source starting that the yarn of knitting machine is drawn out tube
Wave, certain sound wave source can also be constantly in starting state, by tensing for first of the knitting machine or guiding mechanism,
Sound wave injects yarn.And on the textile machine, then it is to pass through the spinning in the first time starting sound wave source for being drawn out spindle that spins
First of loom tenses or guiding mechanism, and sound wave injection is spinned.Due in all kinds of other weaving looms such as spinning machine, Weaving-machine
Testing principle on tool is similar on knitting machine, is described for the subsequent yarn detection being mainly based on knitting machine.
Controller is by control sound wave injection device, to being connected with sending to yarn mechanism or tension/guiding mechanism etc. for yarn
Yarn on yarn or transmitting yarn device is infused in special frequency channel sound wave rare in its working environment, in solids due to sound wave
Transmission efficiency is high, which can quickly transmit along the yarn.
S102 picks up sound wave entrained when the yarn path pick-up point.
By the way that sound pick up equipment is mounted on last one of tension/guiding mechanism before yarn enters the knitting mechanism of knitting machine
Or at the yarn input terminal of knitting mechanism, last one of tension/guiding mechanism before connecting the approach knitting mechanism is picked up
Or sound wave entrained by the yarn at the yarn input terminal of knitting mechanism, and the sound wave to be detected picked up is converted into audio
Electric signal.
S103 extracts the special frequency channel acoustic wave energy being previously implanted from the sound wave.
To collected acoustic signals inlet wire filter, eliminate corresponding environmental background noise, extract be previously implanted it is specific
Frequency range acoustic wave energy.
S104 judges tension or the on off operating mode of the yarn according to the special frequency channel acoustic wave energy.
Specifically, illustrating that propagates not over yarn is somebody's turn to do when the special frequency channel acoustic wave energy is lower than first threshold
Special frequency channel sound wave has been in an off state for transmitting the yarn of the sound wave, issue yarn immediately and lack alarm.When obtaining
When the special frequency channel acoustic wave energy taken is higher than second threshold, illustrate have than normal condition yarn for the yarn for transmitting the sound wave
Line has better acoustic transmissions energy, i.e., the described detected yarn, which is in, bears the excessive tension of pulling force, issues yarn immediately
Line tensioning alarm.When the special frequency channel acoustic wave energy of acquisition is between first threshold and second threshold, explanation is used for
The yarn for transmitting the sound wave is in normal condition.Wherein the first threshold and second threshold are according on knitting machine
It is preset acquired by the similar frequency bands acoustic wave energy that tested yarn is transmitted under normal tensioning state when running on knitting machine
Value, certain preset first threshold and second threshold can also need to be adjusted according to actually detected early warning.
The yarn detection method of the present embodiment monitors the special frequency channel sound by injecting special frequency channel sound wave on yarn
Conduction condition of the wave on the yarn has shown monitored yarn when the special frequency channel acoustic wave energy is lower than predetermined low level
Through being broken, illustrates that monitored yarn is in tensioning state when special frequency channel acoustic wave energy is higher than default high level, pass through above-mentioned side
Formula can find the broken string situation of yarn at the first time, and the state that accurately prediction yarn will be pulled off, to alarm in advance
It avoids breaking.Discovery in time breaks or will break, and can be significantly reduced the operation movement of operator, activity duration, to mention
The labor efficiency of high operator reduces the qualification of labour skill.
Attached drawing 2 is the flow diagram of another yarn detection method disclosed by the embodiments of the present invention, for detecting knitting
Yarn on all kinds of textile machines such as machine, Weaving-machine, spinning machine or spin on-off or tensioning situation in machine running process,
It specifically includes:
S201, what is respectively connected to more different yarns respectively has not to injection in yarn mechanism or yarn guide mechanism
With the sound wave of special frequency channel.
Start to emit preset special frequency channel sound in the first time sound wave source starting that the yarn of knitting machine is drawn out tube
Wave, certain sound wave source can also be constantly in starting state, by tensing for first of the knitting machine or guiding mechanism,
Sound wave injects yarn.It tenses or is oriented to specifically, can be given respectively by multiple sound wave injection devices first of multiple yarns
Sound wave decanting point injection in mechanism has the special frequency channel sound wave of different frequency range, so that follow audio processing unit is receiving respectively
Can be judged according to band information after the sound wave of sound pick-up be which yarn sonic data.The sound wave frequency range wherein injected needs
It is different from the background sound source in working environment.
S202 picks up sound wave entrained when the every yarn path pick-up point.
Before multiple sound pick up equipments to be separately mounted to the knitting mechanism of detected the entered knitting machine of multiple yarns
Last one of tension/guiding mechanism or knitting mechanism yarn input terminal at, pick up before connecting the approach knitting mechanism
Last one of tension/guiding mechanism or knitting mechanism yarn input terminal at yarn entrained by sound wave, and will be picked up
The sound wave that each yarn to be detected obtained carries is converted to audio electrical signal.
S203 is extracted from sound wave entrained by every one thread corresponding be previously implanted special frequency channel acoustic wave energy respectively.
The acoustic signals carried to collected each yarn are filtered, and eliminate corresponding environmental background noise, are extracted
Each special frequency channel acoustic wave energy being previously implanted.
S204 is confirmed according to the attenuation degree of special frequency channel acoustic wave energy and band information in broken string or tension
One or more yarn.
Specifically, verifying each special frequency channel sound picked up from each yarn according to each sound wave frequency band list injected to each yarn
Wave information, when some described special frequency channel acoustic wave energy is lower than the preset frequency range minimum or to be not received by this specific
When frequency range acoustic wave energy, illustrate the special frequency channel sound wave propagated not over the yarn, i.e., for transmitting the frequency range sound wave
Yarn has been in an off state, and is issued yarn immediately and is lacked alarm, also the exportable alarm for indicating to have the yarn identification information
Signal.When some special frequency channel acoustic wave energy of acquisition is higher than the preset frequency range peak, illustrate for transmitting the frequency range
The yarn of sound wave has acoustic transmissions energy more better than normal condition yarn, i.e., the described corresponding yarn of the frequency range, which is in, to be born to draw
The excessive tension of power, issuing yarn tensioning alarm or output instruction immediately has the alarm signal of the yarn identification information.When
When between the minimum and peak of all each corresponding frequency band of each frequency range acoustic wave energy obtained, illustrate the yarn for transmitting each sound wave
Line is all in normal condition.Wherein the minimum and peak of each sound wave frequency range are according to described each on knitting machine
It is detected pre- determined by the corresponding frequency band acoustic wave energy that yarn is transmitted under normal tensioning state when running on knitting machine
If value, certain preset minimum and peak can also need to be adjusted according to actually detected early warning.
To need the yarn for detecting monitoring to be injected separately into different specific by each for the yarn detection method of the present embodiment
Frequency range sound wave, and conduction condition of each special frequency channel sound wave on the yarn is monitored, when a certain frequency range sound wave energy picked up
Amount can position rapidly tension or the on off operating mode of corresponding yarn when not being located in corresponding normal range (NR), realize to textile machine
The real time monitoring early warning of interior a large amount of yarns, discovery broken string or the yarn that will break in time, reduction operator operation intensity.
Attached drawing 3 is the flow diagram of another yarn detection method disclosed by the embodiments of the present invention, for detecting knitting
Yarn on all kinds of textile machines such as machine, Weaving-machine, spinning machine or spin on-off or tensioning situation in machine running process,
It specifically includes:
S301 has different specific frequencies to multiple positions injection in yarn mechanism or yarn guide mechanism to yarn respectively
The sound wave of section.
Multiple sound wave injection devices are respectively to the other of the subsequent approach of first of guiding mechanism and yarn of the knitting machine
The sound wave of multiple guiding mechanism injection different frequency ranges.It is described successively to carry upper each frequency range sound when passing through these guiding mechanisms
Wave.Certainly each sound wave frequency range injected needs different from the background sound source in working environment.By on multiple guiding mechanisms
Acoustic signals are injected, the detected yarn is divided into multiple monitoring sections.
S302 picks up sound wave entrained when the yarn path pick-up point.
It last is drawn together by be mounted on sound pick up equipment before the knitting mechanism of the entered knitting machine of detected yarn
At the yarn input terminal of tightly/guiding mechanism or knitting mechanism, pick up by the last drawing together before the approach knitting mechanism
Sound wave entrained by yarn at the yarn input terminal of tightly/guiding mechanism or knitting mechanism, and each yarn picked up is taken
The sound wave of band is converted to audio electrical signal.
S303 extracts the special frequency channel acoustic wave energy being previously implanted from the sound wave.
The acoustic signals carried to collected yarn are filtered, and eliminate corresponding environmental background noise, are extracted preparatory
Each special frequency channel acoustic wave energy of injection.
S304 judges tension or the on off operating mode of the yarn multiple portions according to the special frequency channel acoustic wave energy.Tool
Body includes:
When any special frequency channel acoustic wave energy described in the sound wave of pickup is lower than the preset frequency range minimum or do not have
When receiving the special frequency channel acoustic wave energy, which is that off-state occurs.
And each spy picked up from the yarn is verified according to the sound wave frequency band list injected to each sound wave decanting point of yarn
Determine frequency range information of acoustic wave, when certain special frequency channel acoustic wave energies are higher than the preset frequency range peak, is higher than from these
The sound wherein injected the latest to yarn by injection sound wave frequency band list is obtained in special frequency channel when the preset frequency range peak
Wave frequency section, this injects the corresponding decanting point of sound wave frequency range the latest and has as located to the thread segment between its latter sound wave decanting point
In the thread segment for bearing the excessive tension of pulling force, can also issue yarn tensioning alarm or output instruction immediately has the yarn
The alarm signal of the identification information at position.
Wherein the minimum and peak of each sound wave frequency range are according to the detected yarn on knitting machine
It is preset determined by the corresponding frequency band acoustic wave energy that various pieces are transmitted under normal tensioning state when running on knitting machine
Value, certain preset minimum and peak can also need to be adjusted according to actually detected early warning.
Same yarn is divided into each monitoring section using multiple sound wave decanting points by the yarn detection method of the present embodiment,
By being injected separately into different special frequency channel sound waves to each monitoring section of same yarn, and monitors each special frequency channel sound wave and exist
Conduction condition on the yarn realizes that the tension situation of each section of the yarn on textile machine monitors early warning in real time, and
The thread segment that Shi Faxian breaks or will break, reduces the operation intensity of operator, while can also be according to the accumulative drawing of yarn
Tight situation goes in discovery textile machine the excessive machine station of yarn pulling force often easily occur, facilitates the subsequent adjustment to machine.
Attached drawing 4 is the flow diagram of another yarn detection method disclosed by the embodiments of the present invention, for detecting knitting
Yarn on all kinds of textile machines such as machine, Weaving-machine, spinning machine or spin on-off or tensioning situation in machine running process,
It specifically includes:
S401, to yarn to the sound wave for injecting special frequency channel in yarn mechanism or yarn guide mechanism.
S402 picks up sound wave entrained when the multiple pick-up points of the yarn path respectively.
By the way that sound pick up equipment to be mounted on to multiple guiding mechanisms of detected yarn and the yarn end of incoming cables of knitting mechanism
At son, the monitored yarn is divided into multiple monitoring sections, picks up sound wave entrained by the yarn by each pick-up point.
S403 extracts the special frequency channel acoustic wave energy being previously implanted from the sound wave.
The acoustic signals obtained to each pick-up point are filtered, and eliminate corresponding environmental background noise, extraction is previously implanted
Special frequency channel acoustic wave energy and pass to controller together with each pick-up point identity information.
S404 judges tension or the on off operating mode of the yarn multiple portions according to the special frequency channel acoustic wave energy.Tool
Body includes:
When the frequency range acoustic wave energy that each pickup point obtains is lower than the preset frequency range minimum or it is not received by this
When special frequency channel acoustic wave energy, which is that off-state occurs.
It is picked up from the yarn according to the sound wave frequency band list verification to each sound wave pickup dot picking of yarn each specific
Frequency range information of acoustic wave,
The special frequency channel acoustic wave energy acquired in one or more of pick-up points is higher than frequency at the preset pick-up point
When section peak, obtain wherein in pick-up point when being higher than the preset position frequency range peak from these along yarn movement direction
The pick-up point of forefront, the pick-up point of the forefront have as been in the thread segment between its previous pick-up point and have born pulling force
The thread segment of excessive tension, can also issue yarn tensioning alarm or output instruction immediately has the identification at the yarn position
The alarm signal of information.
Wherein the minimum and peak of sound wave frequency range are according to described tested on knitting machine at each pick-up point
Survey yarn under normal tensioning state on knitting machine run when be transmitted at the pick-up point position to corresponding band sound wave
Preset value determined by energy, certain preset minimum and peak can also be adjusted according to actually detected early warning
It is whole.
Same yarn is divided into each monitoring section using the multiple pick-up points of setting by the yarn detection method of the present embodiment,
The special frequency channel sound wave received by monitoring each monitoring section, realizes the tension feelings of each section of the yarn on textile machine
Condition monitors early warning in real time, and the thread segment that discovery breaks or will break in time reduces the operation intensity of operator, while can also
Go in discovery textile machine the excessive machine station of yarn pulling force often easily occur according to the accumulative tension situation of yarn, after convenient
The continuous adjustment to machine.
In further embodiments, the yarn detection method further comprises the steps of: the pick-up point for obtaining the yarn path
The ambient noise of surrounding, and the ambient noise is rejected from the sound wave to be detected of pickup.By same with each pick-up point
When obtain the ambient noise on the monitoring pick-up point periphery, and the ambient noise is inputted into the monitoring pick-up point subsequent controllers or sound
Frequency processor, by the ambient noise, obtain includes in the detection sound wave of special frequency channel sound wave from the monitoring pick-up point
It rejects, improves the accuracy of subsequent detection.
Attached drawing 5 is a kind of knitting machine structure chart disclosed in one embodiment of the invention, described in practicable foregoing embodiments
Yarn detection method, the knitting machine are woven into knitted fabric for the raw material such as yarn to be processed into after silk thread, such as socks etc.,
Including giving yarn mechanism 1, yarn guide mechanism 2, knitting mechanism 3 and Yarn break checkout gear etc., wherein described give yarn mechanism 1 by yarn
It is unwound from tube and warp yarn guiding mechanism 2 is sent into knitting mechanism 3, the knitting mechanism 3 is again by the yarn of all kinds of feedings
Line is woven into the knitted fabrics such as corresponding socks, and the yarn guide mechanism includes multiple yarn guides for being equipped with guide eyelit.It is described
Yarn break checkout gear includes sound wave injection device 4, sound pick up equipment 5 and apparatus for processing audio 6, and the sound wave injection device 4 is used for
Special frequency channel sound wave is injected to the yarn for not being sent into knitting mechanism also, the sound pick up equipment 5 is transmitted for picking up by warp yarn
Sound wave；The apparatus for processing audio 6 is used to extract special frequency channel acoustic wave energy from the sound wave of pickup, and according to described specific
Frequency range acoustic wave energy judges tension or the on off operating mode of the yarn.In this embodiment, the sound wave injection device passes through
Yarn on the device for sending yarn or transmitting yarn to yarn mechanism or yarn guide mechanism etc. for being connected with yarn injects specific frequency
Duan Shengbo, since transmission efficiency is high in solids for sound wave, which can quickly transmit along the yarn, and be connected to
The sound pick up equipment of the yarn end can obtain rapidly the special frequency channel sound wave, and apparatus for processing audio is extracted from sound pick up equipment should
The special frequency channel acoustic wave energy being previously implanted illustrates when the special frequency channel acoustic wave energy is lower than predetermined low level not over yarn
The sound wave that line is propagated has been broken for transmitting the yarn of the sound wave.When special frequency channel acoustic wave energy is higher than default high level,
Illustrate that the yarn for transmitting the sound wave has to have than default normal condition yarn and preferably lead acoustic performance, i.e., the yarn is in tensioning
State.Therefore the state that the knitting machine can will be pulled off with correctly predicted yarn is sent out in time so that alarm avoids breaking in advance
Now break or will break, the operation movement of operator, activity duration can be significantly reduced, to improve the labour effect of operator
Rate reduces the qualification of labour skill.
In some embodiments, the sound wave injection device passes through the yarn note to the tube of yarn mechanism on tube
Enter special frequency channel sound wave.Specifically, the sound wave injection device may include audio-frequency generator 42 and raise as shown in attached drawing 6 and 8
Sound device 41, the loudspeaker 42 are placed in below the tube, and the sound wave direction of the launch is towards tube.The audio-frequency generator is used for
It generates the audio signal of default frequency range and converts the audio signal to after special frequency channel sound wave by loudspeaker and inject the yarn
On the yarn of cylinder.Wherein in some knitting machines, the tube is mounted in the tube installation pedestal to yarn mechanism, the loudspeaking
Device can be installed below tube installation pedestal, and the loudspeaker sound wave direction of the launch issues specific towards installation pedestal, loudspeaker
Frequency range sound wave can pass to placement and the tube above it by tube installation pedestal, and then pass to along tube around thereon
Yarn.In further embodiments, the loudspeaker can also be directly mounted inside or above tube installation pedestal, so that
The loudspeaker can directly be contacted with tube, so that the special frequency channel sound wave for more effectively issuing loudspeaker passes through tube and yarn
Cylinder ambient air passes to yarn.Wherein, the specific frequency in need for being sent to loudspeaker can be stored in the audio-frequency generator
Section audio signal, or preset special frequency channel audio signal can also be stored in other peripheral control units or audio processing dress
6 are set, if preset special frequency channel audio signal is stored in apparatus for processing audio 6, the apparatus for processing audio is available
Corresponding different special frequency channel audio signals are selected and obtained from its internal storage in the identity information according to each tube, and
Apparatus for processing audio is sent it to control sound wave of the loudspeaker to yarn transmission corresponding band, so as to according to sound wave
The difference of frequency range is broken judging which road yarn or tension.
In further embodiments, the knitting machine includes multiple yarn guides for being equipped with guide eyelit, the sound wave injection
Device is used to inject special frequency channel sound wave to the yarn by part yarn guide mechanism.As shown in Fig. 7, specifically, it is described
The loudspeaker 41 of sound wave injection device can also be by the part yarn guide 21 of yarn guide mechanism to the yarn by the yarn guide
Special frequency channel sound wave is injected, the yarn guide can choose close to the yarn guide to yarn mechanism side, so that tested yarn model
Enclosing can be bigger.Specifically, the sound wave injection device includes audio-frequency generator and loudspeaker, the loudspeaker is mountable to
On the yarn guide 21, the 41 sound wave direction of the launch of loudspeaker can be towards yarn guide, and the audio-frequency generator is for generating default frequency
The audio signal is simultaneously injected into yarn guide described in approach on the yarn of guide eyelit by the audio signal of section by loudspeaker.Audio
Processing unit can judge drawing of the yarn from the yarn guide to from sound pick up equipment in this segment limit according to the audio signal received
Tight or on off operating mode so that the state of yarn judge it is more accurate.
In some embodiments, as shown in Fig. 8, the sound pick up equipment 5 includes be electrically connected with apparatus for processing audio 6
One sound pick-up 51, first sound pick-up 51 are installed at the yarn input terminal of the knitting mechanism, reach institute for obtaining
It states sound wave entrained by the yarn at yarn input terminal and is converted into the first audio signal.Certain first sound pick-up can also
Part is installed on the yarn guide of knitting mechanism side, entrained by the yarn for guide eyelit in yarn guide described in acquiring way
Sound wave and be converted into detection audio signal.It, can be to yarn by the way that the pick-up point of sound wave decanting point or sound wave is flexibly arranged
It is monitored in the tension of each fragment position part or on off operating mode.
In some embodiments, the sound pick up equipment 5 may also include the second sound pick-up being electrically connected with apparatus for processing audio
52, second sound pick-up 52 is for obtaining the ambient noise near first sound pick-up and being converted into background audio signals.
The apparatus for processing audio receives the detection audio signal and background audio signals, and according to background audio signals are eliminated after
Detection audio signal judge tension or the on off operating mode of the yarn.By the ambient noise for obtaining sound pick up equipment present position
And will be rejected in its special frequency channel acoustic signals from acquisition, it can mitigate brought by the noisy background sound wave of working environment accidentally
Difference improves the accuracy of detection.
In another embodiment, the knitting machine includes a kind of yarn broken string prior-warning device, and yarn broken string is pre-
Alarm device specifically includes: environmental noise monitoring device, sound wave injection device, sound pick up equipment, buzzer, apparatus for processing audio.Its
Described in apparatus for processing audio can select 80C51 type single-chip microcontroller, the environmental noise monitoring device i.e. the second sound pick-up and pick up
The miniature sound pick-up of DC-80 of peak thermoelectricity can be selected in mixer, and other MEMS microphones, such as 2718 type of Lou Shi also can be selected
Number MEMS microphone.6509 loudspeaker of Piao Hui can be selected in the sound wave injection device, and the single-chip microcontroller is used to fill noise monitoring
It sets or the Digital Circuit Signal of sound pick up equipment generation is parsed and generates the instruction of respective audio generation and buzzer alarm.?
In these embodiments, the implementation of yarn broken string prior-warning device are as follows: by the bottom of the horn mouth of sound wave injection device and spinning ingot
Seat fits.MEMS microphone and yarn guide or this body side surface for choosing needle threading structure are fitted.Open environment noise monitoring
Device collects the noise information of weaving loom ambient enviroment, the noise information being collected into is converted to analog circuit signal and is transmitted
To converter, above-mentioned analog circuit signal is converted into Digital Circuit Signal using converter and by the Digital Circuit Signal
It is transferred to single-chip microcontroller.Single-chip microcontroller parses above-mentioned Digital Circuit Signal, reads the spectrum information of ambient noise present, foundation
The spectrum information chooses the rare special frequency channel audio of one section of current environment and generates audio and instructs, and above-metioned instruction is transmitted
To audio-frequency generator.After audio-frequency generator receives above-metioned instruction, automatically generates one section of corresponding audio signal and be transferred to sound
Wave injection device.After sound wave injection device receives audio signal, power amplification is carried out to audio signal and is propagated from horn mouth
Acoustic signals out.Above-mentioned acoustic signals travel to the yarn being wrapped on spindle via the pedestal of spinning ingot, and pass along yarn
It is multicast to yarn guide or chooses needle threading structure.When MEMS microphone senses yarn guide or chooses the vibration of needle threading structure, i.e., it can incite somebody to action
The vibration information is converted to the analog circuit signal for having audio-frequency information and the analog circuit signal is transferred to power amplifier.
The analog circuit signal received is carried out power amplification and is transferred to converter by power amplifier, and converter is put above-mentioned
Analog circuit signal after big is converted to Digital Circuit Signal and is transferred to single-chip microcontroller.Single-chip microcontroller receives above-mentioned digital circuit letter
After number, the current acoustic wave energy value of the special frequency channel audio signal of this detection injection is isolated, according to this energy value, single-chip microcontroller
May determine that it is to send yarn tensioning alarm signal or yarn breakage alert signal to buzzer or do not send.Buzzer is according to connecing
The alarm signal of receipts, sounds an alarm buzzer.Certainly, in other frame structures, the horn mouth of above-mentioned sound wave injection device or
MEMS microphone can also be mounted on the device that other wire installations or similar installable yarn pass through, above-mentioned to detect
The tensioning situation of the yarn passed through between the horn mouth and MEMS microphone of sound wave injection device.
It should be noted that foregoing individual embodiments are described in a progressive manner in this specification, each embodiment weight
Point explanation is the difference from other embodiments, and the same or similar parts in each embodiment may refer to each other.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (10)
1. a kind of yarn detection method, for detecting the yarn on-off on textile machine and tensioning situation, which is characterized in that packet
It includes:
Special frequency channel sound wave is injected to the yarn in yarn mechanism or yarn guide mechanism to textile machine；
Pick up sound wave entrained when the yarn path pick-up point；
The special frequency channel acoustic wave energy being previously implanted is extracted from the sound wave；
Tension or the on off operating mode of the yarn are judged according to the special frequency channel acoustic wave energy.
2. yarn detection method according to claim 1, which is characterized in that the step is according to the special frequency channel sound wave
Energy judges tension or the on off operating mode of the yarn, specifically includes:
When the special frequency channel acoustic wave energy is lower than first threshold, then the detected yarn is off-state.
3. yarn detection method according to claim 1, which is characterized in that the step is according to the special frequency channel sound wave
Energy judges tension or the on off operating mode of the yarn, specifically includes:
When the special frequency channel acoustic wave energy is higher than second threshold, then the detected yarn, which is in, bears the excessive drawing of pulling force
Tight state.
4. yarn detection method according to claim 1 to 3, it is characterised in that:
What is respectively connected to more different yarns respectively has different specific frequencies to injection in yarn mechanism or yarn guide mechanism
The sound wave of section；
Pick up sound wave entrained when the every yarn path pick-up point；
It is extracted from sound wave entrained by every one thread respectively and corresponding is previously implanted special frequency channel acoustic wave energy；
Confirmed according to the attenuation degree of special frequency channel acoustic wave energy and band information in broken string or one of tension or
Threads.
5. yarn detection method according to claim 1 to 3, it is characterised in that:
The sound wave with different special frequency channels is injected to multiple positions in yarn mechanism or yarn guide mechanism to yarn respectively,
Or sound wave entrained when the multiple pick-up points of the yarn path is picked up respectively；
The special frequency channel acoustic wave energy being previously implanted is extracted from the sound wave；
Tension or the on off operating mode of the yarn multiple portions are judged according to the special frequency channel acoustic wave energy.
6. -6 any yarn detection method according to claim 1, which is characterized in that further include:
The ambient noise around the pick-up point of the yarn path is obtained, and by the ambient noise from the sound wave of pickup
It rejects.
7. a kind of knitting machine, including give yarn mechanism, yarn guide mechanism and knitting mechanism, it is described to yarn mechanism by yarn from tube
The upper simultaneously warp yarn guiding mechanism that unwinds is sent into knitting mechanism, which is characterized in that further include:
Sound wave injection device, for injecting special frequency channel sound wave to the yarn in yarn mechanism or yarn guide mechanism；
Sound pick up equipment, for picking up the sound wave transmitted by warp yarn；
Apparatus for processing audio, for extracting special frequency channel acoustic wave energy from the sound wave of pickup, and according to the special frequency channel sound
Wave energy judges tension or the on off operating mode of the yarn.
8. knitting machine according to claim 7, it is characterised in that:
The sound wave injection device includes audio-frequency generator and loudspeaker, and the loudspeaker is placed in below the tube, described
Audio-frequency generator is used to generate the audio signal of default frequency range and converts special frequency channel sound by loudspeaker for the audio signal
It is injected after wave on the yarn of the tube.
9. knitting machine according to claim 7 or 8, it is characterised in that: the sound wave injection device is used for by part
The yarn of yarn guide mechanism injects special frequency channel sound wave.
10. according to any knitting machine of claim 7-9, it is characterised in that: the sound pick up equipment is installed on the braiding
The yarn end of incoming cables of mechanism reaches sound wave entrained by the yarn of the yarn end of incoming cables for obtaining.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153504A (en) * | 1995-04-28 | 1997-07-02 | 东丽工程株式会社 | Method of taking up thread and take-up device therefor |
| CN1238450A (en) * | 1998-03-14 | 1999-12-15 | 梅明格-Iro股份有限公司 | Yarn tension sensor with repeated calibration |
| CN1299959A (en) * | 2001-01-01 | 2001-06-20 | 武汉科技学院 | Non-contact measuring device and method for dynamic tension and twist of yarn |
| KR100308718B1 (en) * | 1992-06-30 | 2001-09-26 | 데이비드 엠 모이어 | Micropore medium |
| CN1316378A (en) * | 2001-05-08 | 2001-10-10 | 河北太行机械厂 | Method for controlling rove tension |
| CN1606692A (en) * | 2001-12-11 | 2005-04-13 | 利特英络纺织机械制造股份公司 | Use of microwaves in the spinning industry |
| CN102745551A (en) * | 2012-07-17 | 2012-10-24 | 绍兴文理学院 | Yarn tension measurement and control system with yarn breaking alarm function |
| CN103757784A (en) * | 2014-01-22 | 2014-04-30 | 东华大学 | Device for spreading large-tow carbon fibers through combination of sound wave method and mechanical multi-roller method |
| CN203729004U (en) * | 2014-01-22 | 2014-07-23 | 东华大学 | Large tow carbon fiber unwinding device combining sound wave method and mechanical multiple-roller method |
| CN210287715U (en) * | 2019-01-04 | 2020-04-10 | 杭州兆图科技有限公司 | Knitting machine |
-
2019
- 2019-01-04 CN CN201910007625.3A patent/CN109629107A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100308718B1 (en) * | 1992-06-30 | 2001-09-26 | 데이비드 엠 모이어 | Micropore medium |
| CN1153504A (en) * | 1995-04-28 | 1997-07-02 | 东丽工程株式会社 | Method of taking up thread and take-up device therefor |
| CN1238450A (en) * | 1998-03-14 | 1999-12-15 | 梅明格-Iro股份有限公司 | Yarn tension sensor with repeated calibration |
| CN1299959A (en) * | 2001-01-01 | 2001-06-20 | 武汉科技学院 | Non-contact measuring device and method for dynamic tension and twist of yarn |
| CN1316378A (en) * | 2001-05-08 | 2001-10-10 | 河北太行机械厂 | Method for controlling rove tension |
| CN1606692A (en) * | 2001-12-11 | 2005-04-13 | 利特英络纺织机械制造股份公司 | Use of microwaves in the spinning industry |
| CN102745551A (en) * | 2012-07-17 | 2012-10-24 | 绍兴文理学院 | Yarn tension measurement and control system with yarn breaking alarm function |
| CN103757784A (en) * | 2014-01-22 | 2014-04-30 | 东华大学 | Device for spreading large-tow carbon fibers through combination of sound wave method and mechanical multi-roller method |
| CN203729004U (en) * | 2014-01-22 | 2014-07-23 | 东华大学 | Large tow carbon fiber unwinding device combining sound wave method and mechanical multiple-roller method |
| CN210287715U (en) * | 2019-01-04 | 2020-04-10 | 杭州兆图科技有限公司 | Knitting machine |
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