CN105040199B - A kind of online weak twist detection device of spinning frame and detection method - Google Patents
A kind of online weak twist detection device of spinning frame and detection method Download PDFInfo
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- CN105040199B CN105040199B CN201510581199.6A CN201510581199A CN105040199B CN 105040199 B CN105040199 B CN 105040199B CN 201510581199 A CN201510581199 A CN 201510581199A CN 105040199 B CN105040199 B CN 105040199B
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Abstract
The invention discloses a kind of online weak twist detection device of spinning frame and detection methods, belong to textile technology field；A kind of online weak twist detection device of spinning frame of the present invention, including thread board, the thread board are equipped with yarn；It further include the spool being used cooperatively with thread board, the spool is equipped with air ring；The thread board, yarn, air ring and spool are one group；Weak twist detection device is equipped in above-mentioned one group of outside.The present invention using the gyrofrequency of the Strength Changes measurement air ring of reflective optoelectronic, calculates the size of the twist by realizing that online weak twist is detected in setting infra-red ray detection device, may be implemented to detect automatically and on-line checking, to lay the foundation for automation control.
Description
Technical field
Present invention relates particularly to a kind of online weak twist detection device of spinning frame and detection methods, belong to textile technology field.
Background technique
Spun yarn weak twist refers to twirl lower than normal value, and the strength of spinning end breaking rear yarn is insufficient, and connector is difficult, shape class short-movie section yarn
In small twist state, it is commonly called as weak twist.Weak twist be exactly on 10CM yarn turn (rotation) less than the number of twists in normal yarn, phase
It is there is certain turn, therefore the number of twists of soft twist yarn is in the number of twists of normal yarn and the number of twists of zero twisted yarn for zero twisted yarn
Centre.Will cause following harm: single thread force when number of twists deficiency to the means that Yarn twisting is raising yarn fastness
Decline, since contrast yarn fabric produced generates yellowish-white shelves after inhaling color, spun yarn production process repeats broken end and increases, and is easy to produce
Raw mill steel ring yarn is knitted woven upper machine broken end and increases, and weak twist is easy to produce filoplume, and weak twist has been easy cotton balls (cotton knot), weak with having
The yarn of twirl makees warp thread, more due to inhaling color, then can generate through the color to elongated property through occurring.Therefore necessary in the actual production process
Avoid the formation of soft twist yarn.
It is taken on operational administrative from many aspects such as maintenance of equipment, auxillaries, technology, running operations at present
Measure prevents the generation of weak twist.However, there are many factor for generating soft twist yarn, spindle band is partially long, and spindle band is gone at wharve major diameter, ingot
Gallbladder damage causes spindle to turn round failure, and spindle band straining pulley weight graduation position is less than normal, so that straining pulley tension is too small, spool is not
It is good, it generates and jumps pipe, the adherency of spindle band flyings is excessive, and spindle band has greasy dirt, has greasy dirt on rolling disk.Therefore occur managing in actual production process
Manage difficult situation.
Retrieval discovery, there are many device about test weaving weak twist, " the anti-weak twist devices of spinning frame " at present
(201420670418.9) propose a kind of anti-weak twist device, the device can only by testing the degrees of offset of the position of spindle band, and
It is returned to original position, to eliminate weak twist.However there are many reason of generating weak twist, for example tengential belt skids, tengential belt folder is spent, because
This only check tengential belt whether in defined position on be incomplete." spinning dynamic tensile, twist non-contact measuring device and
Measurement method " (01106403.X) changes the image that CCD camera acquisition air ring is utilized in method, and true by the shape of air ring
To determine the tension of air ring, and detects the twist of detection yarn by stroboscopic light source, although this method can detecte the weak twist of spun yarn, but
Automanual method is used when being the measurement twist, i.e., its frequency one with air ring is made using the frequency of manual adjustment stroboscopic light source
It causes, to obtain the gyrofrequency of air ring, calculates the size of the twist." a kind of yarn twist testing device " (201110186652.5)
A kind of method for proposing yarn twist test, but this method is used only for the test of finished product, it is impossible to be used in on-line checking.
Summary of the invention
It is an object of the invention to: in view of the above-mentioned problems of the prior art, proposing a kind of online weak twist inspection of spinning frame
Survey device, which is arranged infra-red ray detection device and realizes that online weak twist detects by being formed by the outside of air ring in yarn,
Using reflective optoelectronic Strength Changes measurement air ring gyrofrequency, calculate the size of the twist, may be implemented automatically detect with
Line detection, to lay the foundation for automation control.
It is another object of the present invention to: propose that a kind of detection method of online weak twist of spinning frame, the detection method are logical
Given threshold is crossed, the analog signal with Strength Changes is converted into digital output signal, and yarn is calculated according to its mechanical periodicity
The gyrofrequency of thread balloon；The frequency can be discriminated whether that there are weak twists compared with setpoint frequency by infrared ray circuit board.
Technical solution of the present invention is as follows: a kind of online weak twist detection device of spinning frame of the present invention, a kind of spinning frame are weak online
Twist detection device, which is characterized in that including at least one guide unit；The guide unit includes thread board and cooperates with it
The spool used；The spool is arranged on spool plate；The thread board is equipped with yarn, and the yarn is wrapped in shape on spool
At air ring；It further include the weak twist detection device for measuring air ring gyrofrequency, the weak twist detection device is apart from air ring 1-
150mm。
Further, there are two the guide units, the yarn is respectively wound around shape on two spools there are two corresponding to
At two air rings, the weak twist detection device is arranged between two air rings, described equal two air rings of distance of weak twist detection device
1-150mm。
Further, the weak twist detection device is apart from air ring 15mm.
Further, the weak twist detection device is apart from air ring 70mm.
Further, the weak twist detection device carries out the adjusting of horizontal and vertical position by regulating device；The tune
Regulating device installation is in orbit；The track is arranged on spool plate；The regulating device includes main support, on the main support
Equipped with the article carrying platform for placing weak twist detection device；The lower section of the article carrying platform is equipped with adjusting nut, the adjusting spiral shell
Mother is equipped with adjusting rod；The lower section of the adjusting nut is equipped with fixture nut.
Further, the spool is movably disposed on cross track.
Further, the weak twist detection device is infra-red ray detection device, ultraviolet detecting apparatus or ultrasound examination
Device.
Further, the infra-red ray detection device includes parameter setting apparatus, infrared emission tube, infrared receiver
Pipe, infra red treatment circuit board and indicating lamp module；The parameter setting apparatus, infrared emission tube, infrared receiver tube and
Indicating lamp module is connect with infra red treatment circuit board.
Further, the indicating lamp module includes blue indicator light and red indicating light.
A kind of detection method of the online weak twist of spinning frame of the present invention, includes the following steps:
Step 1: starting weak twist detection device, infrared emission tube and infrared receiver tube generate yam surface anti-
The power for penetrating light generates periodic change information and is sent to infrared ray circuit board；
Step 2: infrared ray circuit board is analyzed and processed, and by given threshold, this simulation with Strength Changes is believed
Digital output signal number is converted to, and calculates the gyrofrequency of ballooning of yarn according to its mechanical periodicity；
Step 3: the frequency can be discriminated whether that there are weak twists compared with setpoint frequency by infrared ray circuit board；
Step 4: infrared ray circuit board can be by the information of normal condition and there are the signals of weak twist situation to be sent to indicator light
Module carrys out lighting and extinguishing for control instructions lamp.
Further, in the step 2, the algorithm of threshold value includes that simple threshold values calculate, i.e., instantaneous voltage is more than certain setting
Being set to when value VH has digital signal output, output valve 1；It is defeated that instantaneous voltage is set to nil signal when being lower than certain setting value VL
Out, output valve 0；It is set as unstable state when between VH and VL, is realized in circuit using partial pressure comparison circuit
Function is stated, i.e., is connected to power supply after three resistance being connected, standard of the voltage at the tie point of resistance as comparison voltage.
Further, in the step 2, the algorithm of the threshold value further includes the function of dynamic threshold, that is, works as input signal
Voltage when being persistently higher than setting value or lower than setting value when, it is assumed that the voltage is direct current signal, is needed in signal processing
Direct current signal is filtered out, AC signal is retained, this function is completed using the capacitor of a blocking circulation exchange in circuit.This function
It can filter out due to ambient noise bring direct current signal, it is unstable in simple threshold values calculating using that can be reduced after this circuit
The range of state keeps the judgement of circuit more accurate.
Weak twist inspection is arranged by being formed by the outside of air ring in yarn in a kind of online weak twist detection device of spinning frame of the present invention
Device is surveyed to realize online weak twist detection, the present invention uses infra-red ray detection device, by becoming using the intensity of reflective optoelectronic
The gyrofrequency for changing measurement air ring, calculates the size of the twist, and detection and on-line checking automatically may be implemented, thus for automation control
System lays the foundation.
A kind of online weak twist detection device of spinning frame of the present invention, wherein weak twist detection device can also use UV detection
Device or ultrasonic detection device, to reduce energy consumption or detect the yarn of more refinement.
UV detection: with the raising of the fineness of yarn, reflective light intensity gradually weakens by the way of infrared emission, because
This needs to increase the electric current of infrared transmitting tube, to improve the luminous intensity of transmitting tube.However this method will increase power consumption, simultaneously
Shorten the service life of the related component such as luminous tube.To solve the above problems, using the detection means of ultraviolet light.Ultraviolet light is equally examined
Survey the method that the size of the rotational speed of spinning air ring judges whether there is weak twist.It is tested according to USTER HVI large capacity fiber
System is using known to the principle of the fluorescence (UV) of purple light detection raw cotton: ultraviolet light irradiates the fluorescence reaction color state of different fibers
It is differentiated with intensity, and it is more sensitive to the chemical fibre especially chemical silk containing brightening agent, to improve reflection
The intensity of light.
Ultrasound examination: ultrasonic wave refers to sound wave of the frequency in particular range.The more close yarn of Surface Structures,
Ultrasonic wave can not be by that can be detected by reflection, and ultrasonic wave cannot diffuse, but also can obtain difference through surface imperfection object plane
The reflection of angle.Since the spread speed of ultrasonic wave is well below the light velocity, the precision of transmitting is lower, thinner in yarn
In the case of, available wider square-wave signal, therefore be conducive to detect the yarn of yarn count higher (fineness is thinner).
A kind of detection method of the online weak twist of spinning frame of the present invention, the detection method will have intensity by given threshold
The analog signal of variation is converted to digital output signal, and the gyrofrequency of ballooning of yarn is calculated according to its mechanical periodicity；It is infrared
The frequency can be discriminated whether that there are weak twists compared with setpoint frequency by line circuit board.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is structure schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of regulating device of the present invention.
Fig. 3 is the structural schematic diagram of infra-red ray detection device of the present invention.
In figure: 1- yarn；2- thread board；3- air ring；4- spool；5- weak twist detection device；6- regulating device；The main branch of 61-
Frame；62- article carrying platform；63- adjusting nut；64- adjusting rod；65- fixture nut；7- track；71- long rails；72- transverse rails
Road.8- spool plate；9- parameter setting apparatus；10- shell；11- indicating lamp module；12- infrared emission tube；13- infrared ray connects
Closed tube；The infrared optical processing circuit plate of 14-.
Specific embodiment
Embodiment one
A kind of online weak twist detection device of spinning frame of the present invention, including at least one guide unit；There are two the present embodiment
Guide unit；The guide unit includes thread board 2 and spool used in conjunction with 4；The spool 4 is arranged in spool plate
On 8；The thread board 2 is equipped with yarn 1, and the yarn 1 is wrapped in formation air ring 3 on spool 4；It further include for measuring air ring
The weak twist detection device 5 of 3 gyrofrequencies, the weak twist detection device 5 is apart from air ring 10mm.
There are two guide units of the present invention, and the yarn 1 is respectively wound around shape on two spools 4 there are two corresponding to
At two air rings 3, the weak twist detection device 5 is arranged between two air rings 3, the 5 equal distance two of weak twist detection device
Air ring 10mm.The weak twist detection device 5 carries out the adjusting of horizontal and vertical position by regulating device 6；The regulating device 5
It is mounted on track 7；The track 7 is arranged on spool plate 8, including is in criss-cross long rails 71 and cross track 72；
The spool 4 is movably disposed on cross track 72.
The regulating device 6 includes main support 61, and the main support 61 is equipped with the load for placing weak twist detection device 5
Object platform 62；The lower section of the article carrying platform 62 is equipped with adjusting nut 63, and the adjusting nut 63 is equipped with adjusting rod 64；It is described
The lower section of adjusting nut 63 is equipped with fixture nut 65.The weak twist detection device 5 is the inspection of infrared ray described in infra-red ray detection device
Surveying device includes parameter setting apparatus 9, infrared ray transmitting 12, infrared receiver tube 13, infra red treatment circuit board 14 and instruction
Lamp module；The parameter setting apparatus 9, infrared emission tube 12, infrared receiver tube 13 and indicating lamp module are and infrared ray
Processing circuit plate 14 connects.The indicating lamp module includes blue indicator light and red indicating light.
A kind of detection method of the online weak twist of spinning frame of the present invention, includes the following steps:
Step 1: starting weak twist detection device, infrared emission tube and infrared receiver tube generate yam surface anti-
The power for penetrating light generates periodic change information and is sent to infrared ray circuit board；
Step 2: infrared ray circuit board is analyzed and processed, and by given threshold, this simulation with Strength Changes is believed
Digital output signal number is converted to, and calculates the gyrofrequency of ballooning of yarn according to its mechanical periodicity；
Step 3: the frequency can be discriminated whether that there are weak twists compared with setpoint frequency by infrared ray circuit board；
Step 4: infrared ray circuit board can be by the information of normal condition and there are the signals of weak twist situation to be sent to indicator light
Module carrys out lighting and extinguishing for control instructions lamp.
In step 2 of the present invention, the algorithm of threshold value includes two kinds of algorithms, the first is that simple threshold values calculate, i.e., instantaneously
Voltage is set to when being more than certain setting value VH digital signal output, output valve 1；Instantaneous voltage is set to when being lower than certain setting value VL
The output of nil signal, output valve 0；It is set as unstable state when between VH and VL, uses intrinsic standoff ratio in circuit
Above-mentioned function is realized compared with circuit, i.e., is connected to power supply after three resistance being connected, and the voltage at the tie point of resistance, which is used as, to be compared
The standard of voltage.
Second algorithm is exactly the function that dynamic threshold is increased on the basis of the first, i.e., when the voltage of input signal
When persistently higher than setting value or when being lower than setting value, it is assumed that the voltage is direct current signal, needs to filter out in signal processing
Direct current signal retains AC signal, completes this function using the capacitor of a blocking circulation exchange in circuit.This function can be with
Filter out due to ambient noise bring direct current signal, using can be reduced after this circuit simple threshold values calculate in unstable state
Range keeps the judgement of circuit more accurate.
Infrared transmitting tube can use more in the present invention, guarantee the intensity of the signal of infrared receiving tube or constitute differential electricity
Road etc..Its function is to be analyzed the variation of the electric signal of infrared receiving tube, be converted to digital signal, is having yarn by leading
Signal " 1 " is issued when in front of yarn plate；Signal " 0 " is issued when no yarn；If signal is continuously within the set time " 0 ", drive
Dynamic indicator light, and the signal is sent into subsequent conditioning circuit.The probe of 1 or 1 or more spindle position is installed on one block of plate,
A kind of online weak twist detection device of spinning frame of the present invention, by the way that weak twist detection device is arranged between adjacent yarn
To realize online weak twist detection, the present invention uses infra-red ray detection device, by being measured using the Strength Changes of reflective optoelectronic
The gyrofrequency of air ring calculates the size of the twist, detection and on-line checking automatically may be implemented, to establish for automation control
Basis.A kind of detection method of the online weak twist of spinning frame of the present invention, the detection method will have Strength Changes by given threshold
Analog signal be converted to digital output signal, and the gyrofrequency of ballooning of yarn is calculated according to its mechanical periodicity；Infrared ray electric
The frequency can be discriminated whether that there are weak twists compared with setpoint frequency by road plate.
When there is spun yarn weak twist it is an object of the invention to the ring spinning frame production process for textile industry, do not have
This problem of the method quickly found proposes that the size of the rotational speed using infrared detection spinning air ring judges whether there is
The method of weak twist.When there is yarn by front of infrared emission tube, it is stronger that yam surface generates reflected light；On the contrary when no yarn
When line is by front of infrared emission tube, it is weaker that yam surface generates reflected light.Therefore, infrared ray transmitting illumination is mapped to yarn and returns
Behind the surface for turning air ring, due to the yarn cycle in air ring pass through the front of infrared transmitting tube, the air ring institute of yarn
The strong and weak of the reflected light of generation generates periodically variation.And the change of the presence or absence of the periodic reacting condition of reflected light yarn
Change, the period is consistent with the gyrofrequency of air ring.By given threshold, this analog signal with Strength Changes is converted into number
Word output signal, and according to its mechanical periodicity calculate ballooning of yarn gyrofrequency, and by the frequency compared with setpoint frequency from
And discriminate whether that there are weak twists.By above-mentioned function mounting on existing spinning frame,
Embodiment two
A kind of online weak twist detection device of spinning frame of the present invention, including at least one guide unit；There are two the present embodiment
Guide unit；The guide unit includes thread board 2 and spool used in conjunction with 4；The spool 4 is arranged in spool plate
On 8；The thread board 2 is equipped with yarn 1, and the yarn 1 is wrapped in formation air ring 3 on spool 4；It further include for measuring air ring
The weak twist detection device 5 of 3 gyrofrequencies, the weak twist detection device 5 is apart from air ring 15mm.
There are two guide units of the present invention, and the yarn 1 is respectively wound around shape on two spools 4 there are two corresponding to
At two air rings 3, the weak twist detection device 5 is arranged between two air rings 3, the 5 equal distance two of weak twist detection device
Air ring 15mm.The weak twist detection device 5 carries out the adjusting of horizontal and vertical position by regulating device 6；The regulating device 5
It is mounted on track 7；The track 7 is arranged on spool plate 8, including is in criss-cross long rails 71 and cross track 72；
The spool 4 is movably disposed on cross track 72.
The regulating device 6 includes main support 61, and the main support 61 is equipped with the load for placing weak twist detection device 5
Object platform 62；The lower section of the article carrying platform 62 is equipped with adjusting nut 63, and the adjusting nut 63 is equipped with adjusting rod 64；It is described
The lower section of adjusting nut 63 is equipped with fixture nut 65.The weak twist detection device 5 is the inspection of infrared ray described in infra-red ray detection device
Surveying device includes parameter setting apparatus 9, infrared ray transmitting 12, infrared receiver tube 13, infra red treatment circuit board 14 and instruction
Lamp module；The parameter setting apparatus 9, infrared emission tube 12, infrared receiver tube 13 and indicating lamp module are and infrared ray
Processing circuit plate 14 connects.The indicating lamp module includes blue indicator light and red indicating light.
A kind of detection method of the online weak twist of spinning frame of the present invention, includes the following steps:
Step 1: starting weak twist detection device, infrared emission tube and infrared receiver tube generate yam surface anti-
The power for penetrating light generates periodic change information and is sent to infrared ray circuit board；
Step 2: infrared ray circuit board is analyzed and processed, and by given threshold, this simulation with Strength Changes is believed
Digital output signal number is converted to, and calculates the gyrofrequency of ballooning of yarn according to its mechanical periodicity；
Step 3: the frequency can be discriminated whether that there are weak twists compared with setpoint frequency by infrared ray circuit board；
Step 4: infrared ray circuit board can be by the information of normal condition and there are the signals of weak twist situation to be sent to indicator light
Module carrys out lighting and extinguishing for control instructions lamp.
In step 2 of the present invention, the algorithm of threshold value includes two kinds of algorithms, the first is that simple threshold values calculate, i.e., instantaneously
Voltage is set to when being more than certain setting value VH digital signal output, output valve 1；Instantaneous voltage is set to when being lower than certain setting value VL
The output of nil signal, output valve 0；It is set as unstable state when between VH and VL, uses intrinsic standoff ratio in circuit
Above-mentioned function is realized compared with circuit, i.e., is connected to power supply after three resistance being connected, and the voltage at the tie point of resistance, which is used as, to be compared
The standard of voltage.
Second algorithm is exactly the function that dynamic threshold is increased on the basis of the first, i.e., when the voltage of input signal
When persistently higher than a certain value or when being lower than a certain value, it is assumed that the voltage is direct current signal, needs to filter out in signal processing
Direct current signal retains AC signal, completes this function using the capacitor of a blocking circulation exchange in circuit.This function can be with
Filter out due to ambient noise bring direct current signal, using can be reduced after this circuit simple threshold values calculate in unstable state
Range keeps the judgement of circuit more accurate.
Infrared transmitting tube can use more in the present invention, guarantee the intensity of the signal of infrared receiving tube or constitute differential electricity
Road etc..Its function is to be analyzed the variation of the electric signal of infrared receiving tube, be converted to digital signal, is having yarn by leading
Signal " 1 " is issued when in front of yarn plate；Signal " 0 " is issued when no yarn；If signal is continuously within the set time " 0 ", drive
Dynamic indicator light, and the signal is sent into subsequent conditioning circuit.The probe of 1 or 1 or more spindle position is installed on one block of plate,
A kind of online weak twist detection device of spinning frame of the present invention, by the way that weak twist detection device is arranged between adjacent yarn
To realize online weak twist detection, the present invention uses infra-red ray detection device, by being measured using the Strength Changes of reflective optoelectronic
The gyrofrequency of air ring calculates the size of the twist, detection and on-line checking automatically may be implemented, to establish for automation control
Basis.A kind of detection method of the online weak twist of spinning frame of the present invention, the detection method will have Strength Changes by given threshold
Analog signal be converted to digital output signal, and the gyrofrequency of ballooning of yarn is calculated according to its mechanical periodicity；Infrared ray electric
The frequency can be discriminated whether that there are weak twists compared with setpoint frequency by road plate.
When there is spun yarn weak twist it is an object of the invention to the ring spinning frame production process for textile industry, do not have
This problem of the method quickly found proposes that the size of the rotational speed using infrared detection spinning air ring judges whether there is
The method of weak twist.When there is yarn by front of infrared emission tube, it is stronger that yam surface generates reflected light；On the contrary when no yarn
When line is by front of infrared emission tube, it is weaker that yam surface generates reflected light.Therefore, infrared ray transmitting illumination is mapped to yarn and returns
Behind the surface for turning air ring, due to the yarn cycle in air ring pass through the front of infrared transmitting tube, the air ring institute of yarn
The strong and weak of the reflected light of generation generates periodically variation.And the change of the presence or absence of the periodic reacting condition of reflected light yarn
Change, the period is consistent with the gyrofrequency of air ring.By given threshold, this analog signal with Strength Changes is converted into number
Word output signal, and according to its mechanical periodicity calculate ballooning of yarn gyrofrequency, and by the frequency compared with setpoint frequency from
And discriminate whether that there are weak twists.By above-mentioned function mounting on existing spinning frame,
Embodiment three
A kind of online weak twist detection device of spinning frame of the present invention, including at least one guide unit；The guide unit packet
Include thread board 2 and spool used in conjunction with 4；The spool 4 is arranged on spool plate 8；The thread board 2 is equipped with yarn
Line 1, the yarn 1 are wrapped in formation air ring 3 on spool 4；It further include the weak twist detection device for measuring 3 gyrofrequency of air ring
5, the weak twist detection device 5 is apart from air ring 70mm.
There are two guide units of the present invention, and the yarn 1 is respectively wound around shape on two spools 4 there are two corresponding to
At two air rings 3, the weak twist detection device 5 is arranged between two air rings 3, the 5 equal distance two of weak twist detection device
Air ring 70mm.The weak twist detection device 5 carries out the adjusting of horizontal and vertical position by regulating device 6；The regulating device 5
It is mounted on track 7；The track 7 is arranged on spool plate 8；The track 7 is arranged on spool plate 8, including is in cross
Long rails 71 and cross track 72；The spool 4 is movably disposed on cross track 72.
The regulating device 6 includes main support 61, and the main support 61 is equipped with the load for placing weak twist detection device 5
Object platform 62；The lower section of the article carrying platform 62 is equipped with adjusting nut 63, and the adjusting nut 63 is equipped with adjusting rod 64；It is described
The lower section of adjusting nut 63 is equipped with fixture nut 65.The weak twist detection device 5 is ultraviolet detecting apparatus.
UV detection: with the raising of the fineness of yarn, reflective light intensity gradually weakens by the way of infrared emission, because
This needs to increase the electric current of infrared transmitting tube, to improve the luminous intensity of transmitting tube.However this method will increase power consumption, simultaneously
Shorten the service life of the related component such as luminous tube.To solve the above problems, using the detection means of ultraviolet light.Ultraviolet light is equally examined
Survey the method that the size of the rotational speed of spinning air ring judges whether there is weak twist.It is tested according to USTER HVI large capacity fiber
System is using known to the principle of the fluorescence (UV) of purple light detection raw cotton: ultraviolet light irradiates the fluorescence reaction color state of different fibers
It is differentiated with intensity, and it is more sensitive to the chemical fibre especially chemical silk containing brightening agent, to improve reflection
The intensity of light.
Example IV
A kind of online weak twist detection device of spinning frame of the present invention, including at least one guide unit；The guide unit packet
Include thread board 2 and spool used in conjunction with 4；The spool 4 is arranged on spool plate 8；The thread board 2 is equipped with yarn
Line 1, the yarn 1 are wrapped in formation air ring 3 on spool 4；It further include the weak twist detection device for measuring 3 gyrofrequency of air ring
5, the weak twist detection device 5 is apart from air ring 150mm.
There are two guide units of the present invention, and the yarn 1 is respectively wound around shape on two spools 4 there are two corresponding to
At two air rings 3, the weak twist detection device 5 is arranged between two air rings 3, the 5 equal distance two of weak twist detection device
Air ring 150mm.The weak twist detection device 5 carries out the adjusting of horizontal and vertical position by regulating device 6；The regulating device
5 are mounted on track 7；The track 7 is arranged on spool plate 8；The track 7 is arranged on spool plate 8, including is in cross
Long rails 71 and cross track 72；The spool 4 is movably disposed on cross track 72.
The regulating device 6 includes main support 61, and the main support 61 is equipped with the load for placing weak twist detection device 5
Object platform 62；The lower section of the article carrying platform 62 is equipped with adjusting nut 63, and the adjusting nut 63 is equipped with adjusting rod 64；It is described
The lower section of adjusting nut 63 is equipped with fixture nut 65.The weak twist detection device 5 is ultrasonic detection device.
Ultrasound examination: ultrasonic wave refers to sound wave of the frequency in particular range.The more close yarn of Surface Structures,
Ultrasonic wave can not be by that can be detected by reflection, and ultrasonic wave cannot diffuse, but also can obtain difference through surface imperfection object plane
The reflection of angle.Since the spread speed of ultrasonic wave is well below the light velocity, the precision of transmitting is lower, thinner in yarn
In the case of, available wider square-wave signal, therefore be conducive to detect the yarn of yarn count higher (fineness is thinner).
The present invention device, which had both been applicable in, is also applied for the other industries such as wool spinning, bast fibre spinning, color spinning with the spinning frame of textile industry
Spinning frame.The device can be generalized to the rove section of the similar fly frame with spinning section, equally applicable and cotton spinning, hair
The industries such as spinning, bast fibre spinning, color spinning.
The present invention can use combining form, and infra-red ray detection device, ultraviolet detecting apparatus or ultrasound examination are filled
It sets and is used in combination, improve operating accuracy.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (4)
1. a kind of online weak twist detection device of spinning frame, it is characterised in that: including guide unit；The guide unit includes guide
Plate (2) and spool used in conjunction with (4)；The spool (4) is arranged on spool plate (8)；It is set on the thread board (2)
Have yarn (1), the yarn (1), which is wrapped on spool (4), forms air ring (3)；It further include for measuring air ring (3) gyrofrequency
Weak twist detection device (5), there are two the guide units, there are two the yarn (1) is corresponding, is respectively wound around two spools
(4) two air rings (3) are formed on, the weak twist detection device (5) is arranged between two air rings (3), the weak twist detection dress
Set (5) two air ring (3) 1-150mm of distance；The weak twist detection device (5) is carried out horizontal and vertical by regulating device (6)
The adjusting of straight position；The regulating device is mounted on track (7)；The track (7) is arranged on spool plate (8), including is in
Criss-cross long rails (71) and cross track (72)；The regulating device (6) includes main support (61), the main support
(61) it is equipped with the article carrying platform (62) for placing weak twist detection device (5)；The lower section of the article carrying platform (62), which is equipped with, adjusts
It saves nut (63), the adjusting nut (63) is equipped with adjusting rod (64)；The lower section of the adjusting nut (63) is equipped with fixed spiral shell
Female (65)；The spool (4) is movably disposed on cross track (72)；The weak twist detection device (5) is infrared ray inspection
Survey device, ultraviolet detecting apparatus or ultrasonic detection device；The infra-red ray detection device include parameter setting apparatus (9),
Infrared emission tube (12), infrared receiver tube (13), infra red treatment circuit board (14) and indicating lamp module；The parameter is set
Determine device (9), infrared emission tube (12), infrared receiver tube (13) and indicating lamp module with infra red treatment circuit board
(14) it connects；The indicating lamp module includes blue indicator light and red indicating light.
2. a kind of detection method of the online weak twist detection device of spinning frame described in claim 1, includes the following steps: step
One: adjusting the distance between two one thread of weak twist detection device distance, distance is set within 150mm, and when experiment is set as
15mm；Step 2: starting weak twist detection device, the reflected light that infrared emission tube and infrared receiver tube generate yam surface
Power generate periodic change information and be sent to infra red treatment circuit board；Step 3: infra red treatment circuit board carries out
Analysis processing, by given threshold, is converted to digital output signal for this analog signal with Strength Changes, and according to its week
Phase variation calculates the gyrofrequency of ballooning of yarn；Step 4: infra red treatment circuit board can be by the frequency compared with setpoint frequency
To discriminate whether that there are weak twists；Step 5: infra red treatment circuit board can be by the information of normal condition and there are weak twist situations
Signal be sent to indicating lamp module and carry out lighting and extinguishing for control instructions lamp；In the step 3, the algorithm of threshold value includes letter
Single threshold calculates, i.e. when instantaneous voltage Vs > setting value Vh, representative has digital signal output, output valve 1；Instantaneous voltage Vs <
When setting value Vl, the output of nil signal, output valve 0 are represented；When instantaneous voltage is between Vh and Vl, represent unstable
State；The infra red treatment circuit board is connected to power supply after three resistance are connected using partial pressure comparison circuit, resistance
Standard of the voltage as comparison voltage at tie point；In the step 3, the algorithm of the threshold value further includes dynamic threshold
Function, i.e., when the voltage of input signal is persistently higher than setting value or when being lower than setting value, it is assumed that the voltage is direct current signal,
It needs to filter out direct current signal in signal processing, retains AC signal, in circuit using the electricity of a blocking circulation exchange
Hold and completes this function；This function can be filtered out due to ambient noise bring direct current signal, using can reduce letter after this circuit
The range of unstable state, keeps the judgement of circuit more accurate in single threshold calculating.
3. the online weak twist detection device of a kind of spinning frame according to claim 1, it is characterised in that: the weak twist detection dress
(5) are set apart from air ring (3) 15mm.
4. the online weak twist detection device of a kind of spinning frame according to claim 1, it is characterised in that: the weak twist detection dress
(5) are set apart from air ring (3) 70mm.
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| CN106646503A (en) * | 2016-08-26 | 2017-05-10 | 浙江赛安电气科技有限公司 | Yarn speed measurement device, yarn covering and twisting equipment and yarn rotating speed measurement method |
| CN107651404B (en) * | 2017-09-13 | 2020-03-17 | 安徽信陆电子科技有限公司 | Uninterrupted automatic induction method |
| CN109191463A (en) * | 2018-10-31 | 2019-01-11 | 中原工学院 | Yarn twist detection device and yarn twist detection method |
| CN111876863B (en) * | 2020-08-13 | 2021-09-21 | 东台远欣机械有限公司 | Electric control isolation wire device for twisting machine |
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