CN202648633U - Photoelectric signal detecting head for detecting textile skew - Google Patents
Photoelectric signal detecting head for detecting textile skew Download PDFInfo
- Publication number
- CN202648633U CN202648633U CN 201220238670 CN201220238670U CN202648633U CN 202648633 U CN202648633 U CN 202648633U CN 201220238670 CN201220238670 CN 201220238670 CN 201220238670 U CN201220238670 U CN 201220238670U CN 202648633 U CN202648633 U CN 202648633U
- Authority
- CN
- China
- Prior art keywords
- bar
- silicon photocell
- detection head
- housing
- optical lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Treatment Of Fiber Materials (AREA)
Abstract
The utility model relates to a photoelectric signal detecting head for detecting textile skew. The photoelectric signal detecting head for detecting the textile skew comprises a light source, a housing, an optical lens, a photoelectric sensor, a stepping motor, a detecting head motor, a lens barrel, a first gear, a second gear, a long rack, etc. The photoelectric sensor uses a micro silicon photoelectric cell as a signal detecting element, and shares the same optical lens for imaging. Under the driving of the stepping motor, the optical lens can move backward and forward through the engagement of the first gear with a rack at a lower end of the lens barrel. Under the driving of the detecting head motor, the whole detecting head can move backward and forward through the engagement of the second gear with the long rack. The micro silicon photoelectric cell used by the utility model is formed by integrating all silicon photoelectric cell bars on a same substrate, the overall size of the micro silicon photoelectric cell is relatively small, the width is close to the thickness of the commonly used fabric weft, and the signal to noise ratio of the signals is high. The same optical system is used, the structure is simplified, the installation is convenient, and the detection precision is high. The magnification times of the optical system can be automatically adjusted through the fabric weft thickness, and is suitable for a wide range of the fabric weft thickness.
Description
Technical field
The utility model relates to a kind of photosignal detection head that detects fabric skew, belongs to the Weaving device technical field.
Background technology
Weft straightener is to correct textile in dyeing and finishing process because the weft yarn that technological factor produces is out of shape indispensable equipment.Its principle of work is to utilize pick-up unit automatically to detect the skew of weft situation of fabric under microcomputer control, passes through the means for correcting abb finishing automatically again.The detection method of using in the existing weft straightener mainly contains fixedly silicon photocell detection method and two kinds of rotation silicon photocell detection methods.Fixedly the silicon photocell detection method is that the picture that the weft yarn of fabric becomes by optical lens is projected on the silicon photocell bar that different angles place respectively, and when the two direction was consistent, electric signal output was maximum, and the silicon photocell inclination angle of output signal maximum is the weft yarn gradient.Rotation silicon photocell detection method is only done 360 o rotation with a slice silicon photocell, and electric signal output is maximum when its direction and weft yarn are consistent through the picture of optical lens one-tenth.The former characteristics are easily (size 2mm * 12mm) of silicon photocell comparison, but because corresponding optical system will be installed in the front of each silicon photocell, the so no matter installation of silicon photocell (guaranteeing that position and angle are correct), or the making of whole system is all very difficult, and non-adjustable to the weft yarn adaptability of different filling densities.The latter's shortcoming be because skew of weft generally all in ± 15o scope, the detection head most time is empty the detection, and little to the weft yarn accommodation of different filling densities, to the slower effect extreme difference of cloth speed.
Summary of the invention
For addressing the above problem, the utility model provides a kind of photosignal detection head that detects fabric skew, this detection head designs simplification, easy for installation, the optical system enlargement factor can be regulated automatically according to weft count, adopt this detection head high to the accuracy of detection of skew of weft, to the density of weft yarn adapt to wider.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of photosignal detection head that detects fabric skew, comprise light source, be positioned at the housing of light source rear end, be fixed in the optical lens of housing front end, be fixed in enclosure interior and the photoelectric sensor relative with the optical lens level, also comprise the image distance mobile device, the object distance mobile device, described optical lens is fixedly connected with the image distance mobile device, front end at described housing is fixedly connected with front shroud, the orienting sleeve that is fixedly connected on front shroud is arranged in described housing, described image distance mobile device activities is connected in orienting sleeve, described object distance mobile device is fixedly connected on the side of housing, and four jiaos all are fixed with roller in the lower end of the side of described housing.Housing is removable by roller under the control of object distance mobile device.
Upper end face and rear surface in described housing inboard have respectively downward protrusion, upper edge protruding upward, lower edge, described upper edge with lower along vertically opposite, on described, be fixed with preamplification board along the side with lower edge, be fixed with photovoltaic cell module along the opposite side with lower edge on described, described photoelectric sensor is fixed on the photovoltaic cell module.
Described image distance mobile device comprises lens drum, be fixedly connected on the stepper motor of housing, be fixed in the gear one of stepper motor output shaft, described lens drum is positioned at orienting sleeve, and lens drum and orienting sleeve can relatively move, in described lens drum lower end tooth bar is arranged, lower end wall at described orienting sleeve has the square tube hole, described gear one passes the square tube hole and is meshed with the tooth bar of lens drum lower end, described optical lens is embedded in the lens drum, and in a side of optical lens the trim ring that is embedded in compression optical lens in the lens drum is arranged.Adopt trim ring to compress optical lens and guarantee that optical lens can not move in lens drum.
On barrel surface, the upper end of described lens drum one elongated slot is arranged, at described orienting sleeve upper end face one anti-turn screw that radially passes orienting sleeve is arranged, the end of described anti-turn screw is positioned at elongated slot.Because of lens drum and orienting sleeve clearance fit, adopt this anti-turn screw can guarantee lens drum can be in orienting sleeve move left and right and can not rotating.
End face is fixedly connected with the window cylinder in the outside of described front shroud, is fixed with the glass pane corresponding with the optical lens level at described window cylinder.
Described object distance mobile device comprise the side of being fixed in housing long tooth bar, detection head motor, with the gear two that the output shaft of detection head motor is fixedly connected with, described gear two is meshed with long tooth bar.
Rear end at described housing is fixedly connected with back shroud, is fixed with edge connector at described back shroud.
Between described fabric and light source, condenser is arranged.This condenser can become directional light with the light of light source, makes the imaging effect of weft yarn better.
Described photoelectric sensor is the micro silicon photocell, described micro silicon photocell be with the n bar each other non-touching silicon photocell bar be integrated on the total substrate of a slice and form, described n is odd number, one that mediates in the non-touching silicon photocell bar each other at described n bar is the reference battery bar, this reference battery bar and horizontal angle are 0 °, all the other n-1 bar silicon photocell bars are symmetrically distributed in the up and down both sides of reference battery bar, and the angle between all the other n-1 bar silicon photocell bars and the reference battery bar is all acute angle.
The physical dimension of described micro silicon photocell is 12mm * 12mm, the number n=13 of the silicon photocell bar on the described micro silicon photocell.
The photosignal detection head that the utility model detects fabric skew adopts photoelectricity transmission-type detection mode, when the directional light that light source sends shines on the fabric, the image of mobile fabric is imaged onto by optical system (optical lens) and produces shading, printing opacity effect on the photoelectric sensor micro silicon photocell, and the micro silicon photocell is that 13 discrete silicon photocell bars are integrated on the total substrate of a slice 12mm * 12mm.Comparatively ideal detection system should be to make the width of the image width of fabric weft yarn and silicon photocell bar basic identical and slightly wide, and the Changing Pattern that obtains like this luminous energy on the silicon photocell bar is the most obvious, and the signal conversion effect is best.When the fabric weft yarn becomes the gradient of the picture to the micro silicon photocell to equate with 13 silicon photocell bars silicon photocell bar wherein or is close by optical lens, the current signal of this silicon photocell bar output is maximum, the current signal of other each silicon photocell bar output is less, output signal the maximum then, its corresponding angle is the size of fabric weft yarn drift angle (skew of weft).
The filling density scope of common fabric weft yarn is 36～120 line/inches, the intermediate density effect is better, and especially little or highdensity effect meeting variation, when even weft count is maximum, every weft yarn picture slightly also is not less than 0.21mm, and the width 0.3mm that the silicon photocell bar is every and weft yarn thickness commonly used approach., for so that the photosignal conversion effect of micro silicon photocell is best, before to the whole latitude of a certain kind fabric weft yarn, should automatically adjust the position of optical lens first for this reason, adapting to the density of this weft yarn, thereby obtain best detection effect.Its course of work is: drive, fabric weft yarn middling speed move ahead (speed of a motor vehicle 5～100m/min gets intermediate value), the image distance mobile device of adjusting optical lens position moves to optical lens first the minimum place of image distance, the object distance mobile device with the photosignal detection head of whole detection fabric skew apart from the descending continuous moving of fabric weft yarn distance, when the current signal on the continuous detecting reference battery bar is maximal value, deposit the one chip microcomputer storer in; The optical lens increase image distance that moves to right
xMm(
xBe natural number), repeat said process, obtain several values, wherein one of maximum is exactly the vertical axle magnification of lens
βThe optimum position, namely the optimum position of optical lens also is the optimum position of micro silicon photocell.Can detect the weft yarn skew of weft after adjusting the position of optical lens and micro silicon photocell, the fabric weft yarn is mobile downward or upward, after the directional light irradiation of being sent by light source, the image of weft yarn is imaged onto on the micro silicon photocell by optical lens, micro silicon photocell continuous output current signal value, the inclination angle of getting a corresponding silicon photocell bar of current signal value of the maximum in the current signal value of this continuous wave output namely obtain the fabric weft yarn and record a little skew of weft at the micro silicon photocell.
The utility model substitutes traditional discrete silicon photocell with the micro silicon photocell, and micro silicon photocell overall dimension is less, and the width of each silicon photocell bar and fabric weft yarn thickness commonly used approach, and Signal-to-Noise is high; Each silicon photocell bar is integrated on the same substrate, uses same optical system, makes designs simplification, and is easy for installation, and accuracy of detection is high; Optical lens position can electronic movement, and the optical system enlargement factor can be regulated automatically according to the fabric weft count, to the density of fabric weft yarn adapt to wider.
Description of drawings
Fig. 1 is the structural representation after the utility model is partly cut open;
Fig. 2 is the plan structure synoptic diagram after the utility model removes power supply, condenser;
Fig. 3 is the structural representation of photoelectric sensor.
Among the figure: edge connector 1, back shroud 2, housing 3, upper along 3-1, lower to 3-2, preamplification board 4, photovoltaic cell module 5, anti-turn screw 6, trim ring 7, lens drum 8, tooth bar 8-1, elongated slot 8-2, orienting sleeve 9, square tube hole 9-1, window cylinder 10, optical lens 11, glass pane 12, front shroud 14, stepper motor 15, stepper motor output shaft 15-1, gear 1, roller 17, long tooth bar 18, gear 2 19, detection head motor 20, the output shaft 20-1 of detection head motor, light source 21, photoelectric sensor 22, reference battery bar 22-1, fabric 23, condenser 24.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1: such as Fig. 1～shown in Figure 3, a kind of photosignal detection head that detects fabric skew comprises light source 21, housing 3, optical lens 11, photoelectric sensor 22, image distance mobile device, object distance mobile device.
Present embodiment photoelectric sensor 22 adopts the micro silicon photocell, the physical dimension 12mm of micro silicon photocell * 12mm, be integrated with 13 each other non-touching silicon photocell bars on it, that wherein be horizontal is reference battery bar 22-1, all the other silicon photocell bars become respectively-6 °～+ 6 ° with reference battery bar 22-1, arrange from top to bottom and correspond to :+6 ° ,+4.5 ° ,+3 ° ,+1.5 ° ,+1 ° ,+0.5 °, 0 ° ,-0.5 ° ,-1 ° ,-1.5 ° ,-3 ° ,-4.5 ° ,-6 °, minimum resolving accuracy is 0.5 °.
The image distance mobile device comprises lens drum 8, stepper motor 15, be fixed in the gear 1 of stepper motor output shaft 15-1, front end at housing 3 is fixedly connected with front shroud 14, the orienting sleeve 9 that is fixedly connected on front shroud 14 by screw is arranged in housing 3, lens drum 8 is positioned at orienting sleeve 9, and lens drum 8 can relatively move with orienting sleeve 9, in lens drum 8 lower ends tooth bar 8-1 is arranged, lower end wall at orienting sleeve 9 has square tube hole 9-1, gear 1 passes square tube hole 9-1 and is meshed with the tooth bar 8-1 of lens drum 8 lower ends, optical lens 11 is embedded in the lens drum 8, and in a side of optical lens 11 trim ring 7 that is embedded in lens drum 8 interior compression optical lenses 11 is arranged.On barrel surface, the upper end of lens drum 8 one elongated slot 8-2 is arranged, at orienting sleeve 9 upper end faces one anti-turn screw 6 that radially passes orienting sleeve 9 is arranged, the end of anti-turn screw 6 is positioned at elongated slot 8-2.Be fixedly connected with fenestrate cylinder 10 at the outside of front shroud 14 end face by screw, be embedded with the glass pane 12 corresponding with optical lens 11 levels at window cylinder 10.
The object distance mobile device comprises the long tooth bar 18, detection head motor 20 of the side of being fixed in housing 3, the gear 2 19 that is fixedly connected with the output shaft 20-1 of detection head motor, and gear 2 19 is meshed with long tooth bar 18.Four jiaos all are fixed with roller 17 in the lower end of the side of housing 3.At the upper end face of housing 3 inboards and rear surface downward protrusion, protruding upward upper along 3-1, lower to 3-2 is arranged respectively, upper along 3-1 and lower vertically opposite along 3-2, be fixed with preamplification board 4 upper along 3-1 and a lower side along 3-2, be fixed with photovoltaic cell module 5 upper along 3-1 and lower opposite side along 3-2, photoelectric sensor 22 is fixed on the photovoltaic cell module 5, in the rear end of housing 3 back shroud 2 is arranged, be fixed with edge connector 1 at back shroud 2, between fabric 23 and light source 21 condenser 24 is arranged, fabric 23 is between housing 3 and condenser 24.
Adopt the photosignal detection head of this detection fabric skew to the step that the weft yarn skew of weft detects to be:
At first, take filling density as 78 lines/cun fabric 23 as example, fabric 23 is descending with 50m/min speed, after the parallel beam of being assembled by the condenser 24 on right side illuminates, see through glass pane 12, be imaged onto (edge connector 1 needs energising, makes photoelectric sensor 22 work) on the photoelectric sensor 22 through optical lens 11.
For the picture that makes fabric 23 weft yarns can cover a silicon photocell bar width at least, then can determine the vertical axle magnification of lens
βBetween 1.2～1.7.Because of the density range of fabric 23 weft yarns generally at 36～120 line/inches, namely distance between centers of tracks is 0.71～0.21, line is slightly between 0.42～0.13.After the thinnest line obtained maximum magnification, 0.13 * 1.7=0.22 surpassed 2/3 of micro silicon photocell, and its shading, translucent effect can identify peak value after the electric current that different micro silicon photocell bars produces amplifies.If further amplify again, then must strengthen maximum image distance, make detection head integral body excessive; And behind the magnification of the thickest line acquisition minimum, 0.42 * 1.2=0.51 is not more than micro silicon photocell spacing 0.6mm, and its shading, translucent effect also can identify peak value after the electric current that different micro silicon photocell bars produces amplifies; If further dwindle again, then must reduce the minimum image distance, namely lengthen lens drum 8 length, finally also make the whole change of detection head large.So vertical axle magnification of lens
βValue is just suitable between 1.2～1.7, the detection head compact overall structure.For obtaining the vertical axle magnification of best lens
βValue, drive, fabric 23 is descending with 50m/min speed, the stepper motor 15 of adjusting optical lens 11 positions moves to the minimum place of image distance with optical lens 11 through gear 1, tooth bar 8-1 first, this example is 64mm, detection head motor 20 through gear 2 19, long tooth bar 18 with housing 3 apart from the descending continuous moving of fabric 23 distances, the current signal on the continuous detecting reference battery bar 22-1, export maximal value 0.009 a μ A, deposit storer in; Stepper motor 15 drives lens drum 8, increases image distance
x=2mm obtains another one maximal value 0.01 μ A.Repeat said process, until image distance is maximum, present embodiment is 86mm, can obtain thus 12 values, gets wherein maximum 0.018 a μ A, is exactly the vertical axle magnification of lens
βThe optimum position,
β=1.36, object distance is 54.33mm, i.e. the optimum position of optical lens 11 and micro silicon photocell.
General automatic weft straightener has 2～4 photosignal detection heads that detect fabric skew, just can obtain skew of weft and the curved value of latitude of fabric after the Comprehensive Assessment, as the correcting value foundation of aligning gear.
Claims (10)
1. photosignal detection head that detects fabric skew, comprise light source, be positioned at the housing of light source rear end, be fixed in the optical lens of housing front end, be fixed in enclosure interior and the photoelectric sensor relative with the optical lens level, it is characterized in that: also comprise the image distance mobile device, the object distance mobile device, described optical lens is fixedly connected with the image distance mobile device, front end at described housing is fixedly connected with front shroud, the orienting sleeve that is fixedly connected on front shroud is arranged in described housing, described image distance mobile device activities is connected in orienting sleeve, described object distance mobile device is fixedly connected on the side of housing, and four jiaos all are fixed with roller in the lower end of the side of described housing.
2. the photosignal detection head of detection fabric skew according to claim 1, it is characterized in that: upper end face and rear surface in described housing inboard have respectively downward protrusion, upper edge protruding upward, lower edge, described upper edge with lower along vertically opposite, on described, be fixed with preamplification board along the side with lower edge, be fixed with photovoltaic cell module along the opposite side with lower edge on described, described photoelectric sensor is fixed on the photovoltaic cell module.
3. the photosignal detection head of detection fabric skew according to claim 1 and 2, it is characterized in that: described image distance mobile device comprises lens drum, be fixedly connected on the stepper motor of housing, be fixed in the gear one of stepper motor output shaft, described lens drum is positioned at orienting sleeve, and lens drum and orienting sleeve can relatively move, in described lens drum lower end tooth bar is arranged, lower end wall at described orienting sleeve has the square tube hole, described gear one passes the square tube hole and is meshed with the tooth bar of lens drum lower end, described optical lens is embedded in the lens drum, and in a side of optical lens the trim ring that is embedded in compression optical lens in the lens drum is arranged.
4. the photosignal detection head of detection fabric skew according to claim 3, it is characterized in that: on barrel surface, the upper end of described lens drum one elongated slot is arranged, at described orienting sleeve upper end face one anti-turn screw that radially passes orienting sleeve is arranged, the end of described anti-turn screw is positioned at elongated slot.
5. the photosignal detection head of detection fabric skew according to claim 3, it is characterized in that: end face is fixedly connected with the window cylinder in the outside of described front shroud, is fixed with the glass pane corresponding with the optical lens level at described window cylinder.
6. the photosignal detection head of detection fabric skew according to claim 3, it is characterized in that: described object distance mobile device comprise the side of being fixed in housing long tooth bar, detection head motor, with the gear two that the output shaft of detection head motor is fixedly connected with, described gear two is meshed with long tooth bar.
7. according to claim 4 or the photosignal detection head of 5 or 6 described detection fabric skews, it is characterized in that: the rear end at described housing is fixedly connected with back shroud, is fixed with edge connector at described back shroud.
8. the photosignal detection head of detection fabric skew according to claim 7 is characterized in that: between described fabric and light source condenser is arranged.
9. the photosignal detection head of detection fabric skew according to claim 7, it is characterized in that: described photoelectric sensor is the micro silicon photocell, described micro silicon photocell be with the n bar each other non-touching silicon photocell bar be integrated on the total substrate of a slice and form, described n is odd number, one that mediates in the non-touching silicon photocell bar each other at described n bar is the reference battery bar, this reference battery bar and horizontal angle are 0 °, all the other n-1 bar silicon photocell bars are symmetrically distributed in the up and down both sides of reference battery bar, and the angle between all the other n-1 bar silicon photocell bars and the reference battery bar is all acute angle.
10. the photosignal detection head of detection fabric skew according to claim 9, it is characterized in that: the physical dimension of described micro silicon photocell is 12mm * 12mm, the number n=13 of the silicon photocell bar on the described micro silicon photocell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238670 CN202648633U (en) | 2012-05-25 | 2012-05-25 | Photoelectric signal detecting head for detecting textile skew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220238670 CN202648633U (en) | 2012-05-25 | 2012-05-25 | Photoelectric signal detecting head for detecting textile skew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648633U true CN202648633U (en) | 2013-01-02 |
Family
ID=47417729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220238670 Expired - Fee Related CN202648633U (en) | 2012-05-25 | 2012-05-25 | Photoelectric signal detecting head for detecting textile skew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660862A (en) * | 2012-05-25 | 2012-09-12 | 常州信息职业技术学院 | Method and device for detecting fabric skewness |
| CN111702325A (en) * | 2020-06-28 | 2020-09-25 | 北京欧普蓝激光科技有限公司 | Laser rotary-pendulum cutting head dimming device and adjusting method |
-
2012
- 2012-05-25 CN CN 201220238670 patent/CN202648633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102660862A (en) * | 2012-05-25 | 2012-09-12 | 常州信息职业技术学院 | Method and device for detecting fabric skewness |
| CN111702325A (en) * | 2020-06-28 | 2020-09-25 | 北京欧普蓝激光科技有限公司 | Laser rotary-pendulum cutting head dimming device and adjusting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102660862A (en) | Method and device for detecting fabric skewness | |
| CN201648816U (en) | Automatic weft straightener based on machine vision | |
| CN202648633U (en) | Photoelectric signal detecting head for detecting textile skew | |
| CN107437923A (en) | A kind of uniaxial tracking bracket with automated cleaning and posture detection function | |
| CN109682310A (en) | Thickness plane degree segment difference detection device, system and method | |
| CN103345263A (en) | Sun position tracking sensor | |
| CN206038990U (en) | Optical filter component | |
| CN102879181A (en) | Device and method for detecting condensation accuracy of solar paraboloid condenser | |
| CN209484207U (en) | A kind of adjustable opto-electronic sensor support | |
| CN116317899A (en) | High-efficiency solar energy collecting device with optical lens and photosensitive function | |
| CN216851856U (en) | Self-interacting photovoltaic support | |
| CN201390840Y (en) | Weft yarn detection device | |
| CN217211354U (en) | Optical module aging monitoring device | |
| CN103308001A (en) | Device and method for measuring underwater AoR (Angle of Repose) of sediment based on optical imaging | |
| CN215449641U (en) | Detection device of photoelectric sensor | |
| CN201413135Y (en) | Cross-shaped light barrier forking sensor | |
| CN204788345U (en) | Wireless digital sun is trailed position and is detected head | |
| CN203519160U (en) | Light detecting device used in solar tracking system | |
| CN209345273U (en) | A kind of self-service express delivery picking camera system | |
| CN113734865A (en) | Horizontal deviation-rectifying storage structure for middle sealing machine | |
| CN206894749U (en) | A kind of slub yarn fabric scanning means | |
| CN220333039U (en) | Photoelectric distance-adjusting structure of packer | |
| CN210075153U (en) | Automatic sun-tracking charging system for solar cell panel | |
| CN216272269U (en) | Intelligent cloth rolling device of circular knitting machine | |
| CN211552694U (en) | Parallelism detection device for junction box of photovoltaic module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20140525 |