CN101563489B - Electro-optical yarn sensor - Google Patents
Electro-optical yarn sensor Download PDFInfo
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- CN101563489B CN101563489B CN2007800417770A CN200780041777A CN101563489B CN 101563489 B CN101563489 B CN 101563489B CN 2007800417770 A CN2007800417770 A CN 2007800417770A CN 200780041777 A CN200780041777 A CN 200780041777A CN 101563489 B CN101563489 B CN 101563489B
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- light
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- feeding device
- light source
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
- D03D47/367—Monitoring yarn quantity on the drum
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Treatment Of Fiber Materials (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Light Receiving Elements (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Facsimile Heads (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A yarn feeding device F comprises at least one electro-optical yarn sensor S having at least one combination of a light source E and a physically closely adjacent receiver R. In the light path betweenthe light source/receiver combination and a reflective scanning zone 12 on a storage body of the yarn feeding device a transparent optical spreading body B is provided which spreads a substantially r ound light spot 17 into a longitudinal light strip in the reflective yarn scanning zone 12, the transparent spreading body B being arranged such that the longitudinal axis of the light strip is oriented substantially parallel to the axes of the windings of a yarn Y carried by the storage body periphery.
Description
Technical field
The present invention relates to a kind ofly, and relate to a kind of as claim 16 electro-optical yarn sensor as described in the preamble as claim 1 yarn feeding device as described in the preamble.
Background technology
DE-A-19612953 discloses the electro-optical yarn sensor in a kind of yarn feeding device, and described Yarn senser comprises the zone of reflections of similar fence shape, and the described zone of reflections is by bar hole or laterally disposed bore region restriction.Only the part light of light source is used to scan yarn.
The electro-optical yarn sensor of the yarn feeding device of WO 00/48934 A has LED or the laser diode as light source, laser diode, be so-called VCSEL (vertical cavity surface emitting laser), it can produce the straight narrow cone-shaped beam that faces toward the reflective yarn scanning area of storage member.This light beam produces very round hot spot on scanning area, i.e. ring-type and little hot spot.This scanning area is retroeflection, promptly to be mapped to the identical direction reflected light in this photoscanning district with light.This reflective yarn scanning area is along the circumferencial direction convex curved of this storage member, thus feasible when hot spot is reflected to receiver, roughly spreading in the vertical or oval light belt.Hot spot the yarn winding entrained by this storage body periphery axially on scatter.Above-mentionedly openly mention a kind of embodiment that lens or hole are set on light path, promptly at light emitting diode as light source to obtain at the reflective yarn scanning area under as far as possible little and situation hot spot clearly of hot spot.Since from the reflective yarn scanning area of the reflected light of concentrating small light spot by projection along the circumferencial direction of storage member only by the fact of scattering a little, need high relatively precision suitably to locate and align light source and receiver.Inevitably make and build-up tolerance has destroyed the reading quality of receiver, and in a series of yarn feeding devices that have been equipped with identical in theory Yarn senser, cause serious scanning fluctuation.
Task of the present invention provides a kind of yarn feeding device and a kind of above-mentioned electro-optical yarn sensor, has improved the reading quality of the receiver of electro-optical yarn sensor, and it more has been not easy to make and build-up tolerance than device of the prior art.
Summary of the invention
Purpose of the present invention by claim 1 feature or the feature by claim 16 realize.
The transparent expansion body that provides in the light path has shockingly improved the reading quality of receiver, and has compensated inevitable manufacturing and build-up tolerance better.And the operation of Yarn senser is responsive not at all to the inevitable relative motion that appears between the reflective yarn scanning area on hard-wired light source/receiver combination and the storage member.
Suppose that this improvement is owing to the following fact produces: the transparent expansion body will be by having scattered long relatively on the reflective yarn scanning area and light belt clearly from the substantial linear on the expanded body that light beam produced of light source ground at the small light spot on the circumferencial direction of storage member, and the longitudinal axis of light belt is arranged essentially parallel to yarn winding axle entrained on this storage member.Thereby the high high concentration degree that also causes reflexing to the light on the receiver of the light concentration degree on the light belt.Then receiver receives the light that quilt that the transparent expansion body weight newly is sent to receiver is concentrated, and therefore, responds this reflected light reliably, and not pipe manufacturer and build-up tolerance, also no matter the inevitable relative motion of storage member.Yarn winding one arrives the position of the light belt of reflective yarn scanning area, and any reflection from this light belt is just sharply interrupted, so that receiver responds the final height modulation that forms between full exposure and shade situation reliably.Output signal from receiver is very strong, does not therefore need remarkable amplification.This transparent solid expanded body has spread to little and concentrated hot spot in the light belt clearly away from the reflective yarn scanning area, thereby makes this light belt narrow relatively but long relatively on the reflective yarn scanning area.Reflected light by the collection of transparent expansion body and converted to once more very round, the flare of ring-type for example, light arrives receiver from flare.Light belt on the scanning area is long more, and reflected light can be received the good more of device evaluation and processing.
Provide the obvious transparent expanded body to allow to improve the Yarn senser performance to obtain should cost.This Yarn senser not only may be implemented in the yarn feeding device, and can be used for utilizing in other yarn scanning application operating of light reflective operation.
This transparent expansion body is constructed such that preferably its two light directions along the optical axis of Yarn senser carry out similar operations.A large amount of light that vertical light belt from scanning area reflects are gathered by the transparent expansion body, and convert very round light beam to, and this light beam is directed to light source/receiver combined location with the excitation receiver.The reflected light of being gathered is launched from hot spot, and this hot spot is circle or ring-type basically, and has and guarantee receiver to be reflected reliably light is mapped to and the size of pipe manufacturer and build-up tolerance not.
In favourable embodiment, light source is a LASER Light Source, is used to launch the laser beam of tapered a little circle and/or ring-type, preferred infrared light.Because LASER Light Source is strong beam and low relatively power consumption, therefore especially have superiority.
Particularly advantageous is to adopt vertical cavity surface-emitting laser diode (VCSEL) as LASER Light Source.But the VCSEL cost reasonably is used for different size, has permanent serviceable life, and is able to take operating conditions abominable in the yarn feeding device and does not go wrong.
Replacedly, light source can be a light emitting diode, the infrared beam that preferred emission is tapered a little.
Verified, because reflective object sensor comprises light source (infrarede emitting diode or VCSEL) and receiver (NPN silicon phototransistor), for example according to the Plane Installation technology, the two is arranged side by side on the parallel shafts in the compact plastic casing that is easy to be installed on the printed circuit board, therefore from the available what is called " emission object diode " of the OPTEK technology company of the Texas 75006 of USA, model is OPB 609, OPB 609V, preferably is implemented in the yarn feeding device.Causing especially with the transparent expansion body in conjunction with these reflective object sensor types, the Yarn senser in yarn feeding device obtains optimal performance.Distance between light source and the receiver is preferably less than 1.0mm.
Advantageously, the transparent expansion body is arranged in the about middle position between light source/receiver combination and the scanning area.This layout guarantees to have similar optical condition under two light directions.Especially, the distance between transparent expansion body and the reflective scan district causes amplification effect, thereby makes the light clearly that is formed by the hot spot that light source produced on the receding side of transparent expansion body form light belt long relatively and that the division is clearly demarcated at scanning area.
Advantageously, the transparent expansion body is formed by the plastic material injection molding with optimised optical properties.Alternatively, the transparent expansion body also can be made by glass.The surface portion of transparent expansion body is not used in and receives or emission light, and the overlay film of available extinction or other type covers.
In a kind of simple embodiment, the transparent expansion body is a solid cylinder, and this cylinder axis is perpendicular to the storage member axle and be parallel to the tangent line of storage body periphery.Simple solid cylinder always will be justified hot spot and convert linear light or light belt along a direction to, and gather reflected light and convert the reflected light of being gathered to very round hot spot and the light beam that the division is clearly demarcated sends in the receiver.
If the transparent expansion body is solid, and have two direct relative and separated raised cylinder surf zones, these two surf zones have identical at least in fact radius-of-curvature and straight parallel bus, and then this Yarn senser can obtain more performance.In this case, radius-of-curvature is equal to or greater than along the ultimate range between two surf zones of the optical axis of Yarn senser.The radius-of-curvature that is configured as each periphery zone is greater than the light of handling along " being extruded " right cylinder of the distance between the surf zone of optical axis along both direction, thereby makes light be focused on well to a certain extent.
In the favourable embodiment of another kind, the reflective scan surface is made up of the reverberator that is inserted into storage body periphery, perhaps is made up of storage body periphery itself, for example, under latter event, realizes by mirror sections is provided in storage body periphery.Advantageously, the reverberator that inserted of location, thereby make when the yarn winding when storage body periphery is forwarded, its outer surface is inswept by the yarn winding.This has realized the automatically cleaning effect of expectation.
Along with the inevitable relative motion between light source/receiver combination and reflective scan district occurs, mainly along the storage member circumferencial direction, this relative motion may cause light vibration to occur from flat scanning district reflex time, described scanning area is preferably along the circumferencial direction convex curved of storage member, and has the straight edge line that is arranged essentially parallel to the storage member axle.The convex curvature in reflective scan district preferably is similar to the curvature of storage body periphery.
In order to improve the reflection characteristic in this reflective scan district, in another embodiment, the reflective scan district is retroeflection.Retroeflection means that a large amount of light is to be mapped to the identical direction reflection of scanning area with it.
Description of drawings
To be described embodiments of the invention by means of accompanying drawing.In the accompanying drawings:
Fig. 1 is the side schematic view that has been equipped with the yarn feeding device of two electro-optical yarn sensors;
Fig. 2 is the side schematic view that the part of the Yarn senser seen along the circumferencial direction of storage member has been made sectional view;
Fig. 3 is the view of the Yarn senser of storage member on axially;
Fig. 4 is the view that is similar to Fig. 2, shows the light path of the light that goes out from light emitted;
Fig. 5 is the view in the reflective scan district on the optical axis direction of Yarn senser;
Fig. 6 is the view of the Yarn senser of storage member on axially, shows the light path of Figure 4 and 5;
The view of the Yarn senser on Fig. 7 storage member is axial shows catoptrical light path, and
Fig. 8 is the floor map of the light source that is used for the embodiment of Fig. 1 to 7/receiver combination.
Embodiment
Yarn feeding device F among Fig. 1, for example the feed tip of feeding weft device or knitting machine of loom is knitted yarn feeding device, comprises housing 1, and this housing 1 comprises electro-motor 2 and drum type storage storage member 3.Store up storage member 3 and rotatably be supported on the unshowned driving shaft, yet the magnet 3 ' obstruction of being cooperated jointly is to rotate with driving shaft (fixing storage storage yarn drum).In a kind of unshowned replaceable mode, this yarn feeding device alternately is equipped with rotatable storage member.Drive shaft winding element 4, the yarns Y that winding element 4 will be inserted into the yarn feeding device F from the left side is wound up on the outer contiguous winding of placing of storage member 3.Then unwinding the top winding of yarn from storage member 3, and randomly axially by withdrawing from hole 6.Described housing has shell holder 5, in shown embodiment, wherein two electro-optical yarn sensor S fixed installations, directly facing to reflective scan district 12, described reflective scan district 12 for example is made up of the reverberator M that inserts in the storage member 3 described two electro-optical yarn sensor S from the outside.Yarn senser S transmits with the control module C signal of electro-motor 2 and is connected.Control module C for example relies on from the signal of Yarn senser S to quicken, to slow down or to stop electro-motor, carries out the control to electro-motor 2, just drives winding element 4, thereby makes and exist the winding of predetermined quantity for use in storage body periphery.The winding of the predetermined quantity on the storage member or yarn warehouse size are scanned according to traditional approach by Yarn senser S.
Each Yarn senser S comprises at least one light source E and a receiver R.Light source E launches tapered a little light beam to reverberator M; Receiver R receives the reflected light from reverberator M.Described emitted light beams for example produces light belt on reverberator M, when the decent out-of-date light belt crested of yarn winding.Receiver R responds covering of light belt or occurs, and produces the control signal of representing the yarn winding to exist or do not exist or pass through respectively.
The example Yarn senser S that is positioned at the left side as shown in Figure 1 can scan the position of edge foremost in the yarn warehouse on the storage member 3.The Yarn senser S that is positioned at the right side among Fig. 1 can scan the process of the yarn winding of the full-size in yarn warehouse or each unwinding.Described yarn feeding device can only be equipped with single Yarn senser, perhaps is equipped with the Yarn senser more than two.The other Yarn senser of same type can be used for detecting yarn breakage.Yarn senser S even can be installed in the zone in unwinding hole 6.
Light source E or light emitting diode (preferred infrared light), or LASER Light Source L, preferred VCSEL (vertical cavity surface emitting laser).Receiver R is photodiode or phototransistor.What be particularly useful is that product type is OPB 609, OPB 609V from the available what is called " reflective object sensor " of the OPTEK technology company of the Texas 75006 of USA.This reflective object sensor is shown in Figure 8, and be one light source/receiver combination 8, described light source/receiver combination 8 is by constituting as the infrarede emitting diode of IR transmitter or VCSEL and NPN silicon phototransistor 24, and described IR transmitter and described NPN silicon phototransistor 24 are installed on the parallel shafts in the plastic casing 22 side by side.The peripheral dimension of housing 22 is the about 3.2mm of f=, and the about 2.7mm of e=this means that distance between light source E and the receiver R is less than 1.0mm.
The part of each Yarn senser S is transparent expansion body B, and described transparent expansion body B is made by plastic material with optimised optical properties or glass.Advantageously, this transparent expansion body is the plastic components that injection molding forms.This transparent expansion body B is installed in the about central position between light source in the light path of Yarn senser S or the optical axis/receiver combination 8 and the reverberator M, and just this transparent expansion body B makes up 8 and also separate (yarn passes through the gap) from the reflective scan district 12 of storage member 3 from light source/receiver.On light source/receiver combination 8 printed circuit boards 7 that for example are installed in the shell holder 5.Transparent expansion body B also can be for example mode by retaining element 10 and pad 11 be installed on the circuit board 7.For the ease of transparent expansion body B, expanded body B and mounting lug 9 global formations are installed.
In a kind of unshowned embodiment, transparent expansion body B can be real solid cylinder and utilize cylinder axis to be installed in the optical axis of Yarn senser, thereby makes cylinder axis perpendicular to the storage member axle and be parallel to tangent line on the storage body periphery.
In the embodiment shown in Fig. 2 to 7, yet, transparent expansion body B is " being extruded " cylindrical shape, has directly relative protruding column surf zone 13,14, the two has identical in fact radius-of-curvature X and straight edge line, and described straight edge line extends perpendicular to the storage member axle and is parallel to the tangent line of storage body periphery.Radius-of-curvature X is equal to or greater than the maximum gauge distance between (as shown in the figure) two surf zones 13,14.Therefore, transparent expansion body B is approximately identical with radius-of-curvature X along the thickness of the optical axis direction of Yarn senser S, even less than.
Reflective yarn scanning area 12 is conventional, promptly or by the minute surface on the storage body periphery forms, and perhaps is made up of the insertion reverberator M that illustrates.Outside surface in the scanning area 12 preferably flushes with contiguous storage member 3 peripheries, thus make the yarn winding inswept should the surface to keep its cleaning.But be not used in the surface 15 shown in the surface portion image pattern 3 of transparent expansion body B of printing opacity and equally carry out overlay film or coating.
The light beam 16 (Fig. 4) of light source E emission tapered a little (about 20 °), this light beam is mapped to surf zone 13 and produces circle or ring-type hot spot 17.Transparent expansion body B for example constructs by its geometric configuration, thereby make its with hot spot 17 along cylinder axis to being dispersed on the lower surface area 14 and forming (Fig. 6) axial ray 17 ', light beam shown in 19 from as described in axial ray 17 ' move on and be mapped to scanning area 12.In scanning area 12, produce vertically light belt 18 (Fig. 5) clearly, the longitudinal extension of light belt 18 is more much bigger than the size of hot spot 17.The longitudinal axis of light belt 18 along the circumferential direction extends, and promptly is parallel to each yarn winding axle in fact, and described winding is transmitted in the direction of yarn feeding device run duration at reflective yarn scanning area 12 upper edge arrows 25.The longitudinal extension L of light belt 18 for example can be the same long with the length of transparent expansion body B, even longer.
Fig. 3 shows that light source E and receiver R are arranged to closer to each other in light source/receiver combination 8.The two is all towards transparent expansion body B.
The reflective yarn scanning area 12 preferably circumferencial direction projection ground along storage member 3 is crooked, preferably has the radius X1 identical with storage body periphery.For the vibration (Fig. 7) in the reflected light that suppresses to be caused by inevitable relative motion, the bending of scanning area 12 is favourable, and described inevitable relative motion occurs between storage member 3 and the shell holder 5 the in service of yarn feeding device.Reflective scan district 12 can carry out polishing or minute surface, even can be made into retroeflection.Retroeflection means that light edge and its are mapped to reflective scan district 12 identical directions and reflect.
It is how to reflect back into transparent expansion body B from light belt 18 that Fig. 7 has described light 20, is mapped on the following periphery zone 14 at this light.Transparent expansion body B is constructed such that transparent expansion body B gathers reflected light 20 and form hot spot (circle or ring-type) on last periphery zone 13, and this hot spot is similar to hot spot 17, but can be more bigger.From this hot spot, reflected light 21 is directed to the position of receiver R.In other words, receiver R can find clearly circle or ring-type hot spot or aperture on periphery zone 13 on the transparent expansion body B.
Yarn senser S is configured to respond reflected light 20,21, promptly at the yarn winding not during the position at light belt 18 or when the yarn winding appears at the position of light belt 18, perhaps when the decent out-of-date output signal of winding.
Transparent expansion body B needn't be necessary for the shown shape of Fig. 2 to 7.Alternately, can use the transparent expansion body B that has above-mentioned characteristic arbitrarily, for example prism-like transparent body etc.
The division is clearly demarcated and long relatively light belt 18 because transparent expansion body B produces on reflective yarn scanning area 12, and because reflected light is brought back among the receiver R reliably, therefore geometric relationship between light source/receiver combination 8, transparent expansion body B and reflective yarn scanning area 12 or the inevitable manufacturing in the optical link and build-up tolerance can not destroy the scan characteristic or the performance of Yarn senser.
In addition, because light belt 18 that the division is clearly demarcated in the reflective scan district 12 and grow and transparent expansion body B are retransmitted to reflected light the characteristic in the receiver reliably rightly, between full exposure condition and shade condition (when the yarn winding covers light belt 18), obtain highly modulation, even this means some pollutants in light path, to occur, also can obtain strong output signal as velveteen.Described strong output signal does not need significantly to amplify measure.Transparent expansion body B is as the rational assembly of the cost of VCSEL, this means that this Yarn senser manufacturing cost is reasonable, and is reliable and have permanent serviceable life.
Even can the photoelectric sensor of having implemented be improved for the performance of improving Yarn senser.
In the embodiment of another unshowned hypothesis,, can a more than expanded body in series be installed along light path in order to obtain identical function even high-performance more.
Claims (18)
1. yarn feeding device (F), the electro-optical yarn sensor (S) that comprises housing (1) and be fixed to the outside of storage member (3), this housing comprises electro-motor (2), electro-motor control device (C), described electro-motor is used for producing relative rotation between storage member (3) and winding element (4), this winding element is used for carrying out continuous reeling on the yarn winding of storage member (3) periphery, described electro-optical yarn sensor (S) has light source (E) and physically closely is adjacent to the combination of the receiver (R) of light source (E), described light source with narrow beam from outside direct projection to storage member yarn winding reflective scan district (12), described receiver (R) uses the signal of described controller for motor (C) to respond from the light (20 of described reflective scan district (12) reflection at least, 21), it is characterized in that
Transparent optical expanded body (B) is arranged in the light path between the combination of light source/receiver and reflective scan district (12), and constructing described transparent optical expanded body (B) becomes to make it to go up the very round hot spot (17) that produces in transparent optical expanded body (B) by light beam (16) to scatter into vertical light belt (18) clearly in the described reflective scan district (12), light belt (18) in the described reflective scan district (12) is more much bigger than the extension of the hot spot (17) on the transparent optical expanded body (B) along the extension (L) of its longitudinal axis, and transparent optical expanded body (B) is arranged such that the longitudinal axis of the light belt (18) in the reflective scan district (12) of storage member (3) is parallel to the axle of the winding of the yarn (Y) that carries on the described storage body periphery.
2. according to the yarn feeding device of claim 1, it is characterized in that, described transparent optical expanded body (B) is constructed such that a large amount of light (20) of random reflected the light belt (18) on reflective scan district (12) convert round light beam (21) in described transparent optical expanded body (B), and the light beam of this circle is launched to be got back on described light source/receiver combined location.
3. according to the yarn feeding device of claim 1, it is characterized in that light source (E) is a LASER Light Source, be used to launch the infrared light laser beam (16) of tapered a little circle or ring-type.
4. according to the yarn feeding device of claim 3, it is characterized in that described LASER Light Source is a vertical cavity surface emitting laser.
5. according to the yarn feeding device of claim 1, it is characterized in that described light source (E) is a light emitting diode, be used to launch tapered a little infrared light light beam (16).
6. according to the described yarn feeding device of aforementioned any one claim, it is characterized in that, described light source/receiver combination is electronic module (8), described electronic module (8) is by constituting as the infrarede emitting diode of IR transmitter (E) or vertical cavity surface emitting laser and as the phototransistor (24) of IR receiver (R), the two all is installed on the parallel shafts in the housing (22) side by side, and distance is less than 1.0mm each other.
7. according to the yarn feeding device of claim 1, it is characterized in that described transparent optical expanded body (B) is arranged in the about centre position between light source/receiver combination and the described reflective scan district (12).
8. according to the yarn feeding device of claim 1, it is characterized in that described transparent optical expanded body (B) is formed by the plastic material injection molding with optimised optical properties.
9. according to the yarn feeding device of claim 1, it is characterized in that described transparent optical expanded body (B) is made up of the glass material with optimised optical properties.
10. according to the yarn feeding device of claim 1, it is characterized in that described transparent optical expanded body (B) is a solid cylinder, described cylinder axis is perpendicular to described storage member axle and be parallel to the tangent line of described storage body periphery.
11. yarn feeding device according to claim 1, it is characterized in that, described transparent optical expanded body (B) is solid, and have two direct relative and separated raised cylinder surf zones (13,14), described two surf zones have identical radius-of-curvature (x) and straight parallel bus, described radius-of-curvature (x) is equal to or greater than the ultimate range between two surf zones (13,14).
12. the yarn feeding device according to claim 1 is characterized in that, described transparent optical expanded body (B) has integrated mounting lug (9).
13. the yarn feeding device according to claim 1 is characterized in that, described reflective scan district (12) is formed or is made up of described storage member itself by the reverberator (M) that is inserted in the described storage body periphery.
14. the yarn feeding device according to claim 13 is characterized in that, described reflective scan district (12) is along the circumferencial direction convex curved of described storage member (3), and has the straight edge line that is parallel to described storage member axle.
15. the yarn feeding device according to claim 1 is characterized in that, described reflective scan district is retroeflection.
16. be used for the electro-optical yarn sensor of yarn feeding device (F), described electro-optical yarn sensor (S) comprises the combination of light source (E) and receiver (R), described receiver (R) is positioned at and described light source (E) place that is closely related, described light source (E) arrives narrow beam (16) direct projection in the separated reflective scan district (12) along light path, described receiver (R) is by the light (21) of signal response from described reflective scan district (12) reflection, it is characterized in that, solid transparent optics expanded body (B) is arranged in the light path of described light source/receiver combination, and described transparent optical expanded body (B) is constructed such that it will be scattered into the vertical clearly light belt (18) in the described reflective scan district (12) by the hot spot (17) of light beam (16) circle of generation on transparent optical expanded body (B), light belt (18) is along the extension (L) of its longitudinal axis extension greater than the hot spot (17) on the transparent optical expanded body (B), and transparent optical expanded body (B) is arranged such that the longitudinal axis of going up the light belt (18) that produces in described reflective scan district (12) is parallel to the axle of yarn (Y) winding that carries on the described storage body periphery.
17. the electro-optical yarn sensor that is used for yarn feeding device (F) according to claim 16, it is characterized in that, described light source/receiver combination is electronic module (8), described electronic module (8) is by constituting as the infrarede emitting diode of IR transmitter or vertical cavity surface emitting laser and as the phototransistor (24) of IR receiver, the two is installed on the parallel shafts in the plastic casing (22) side by side, has the distance less than 1.0mm between the two.
18. the electro-optical yarn sensor that is used for yarn feeding device (F) according to claim 16, it is characterized in that, described transparent optical expanded body (B) has two direct relative and separated raised cylinder surf zones (13,14), described two surf zones (13,14) have identical radius-of-curvature (x) and straight parallel bus basically, and described radius-of-curvature (x) is equal to or greater than the ultimate range between two surf zones (13,14).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0602412 | 2006-11-10 | ||
| SE06024129 | 2006-11-10 | ||
| SE0602412-9 | 2006-11-10 | ||
| PCT/EP2007/008767 WO2008055571A1 (en) | 2006-11-10 | 2007-10-09 | Electro-optical yarn sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101563489A CN101563489A (en) | 2009-10-21 |
| CN101563489B true CN101563489B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800417770A Expired - Fee Related CN101563489B (en) | 2006-11-10 | 2007-10-09 | Electro-optical yarn sensor |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2082085B1 (en) |
| CN (1) | CN101563489B (en) |
| AT (1) | ATE491834T1 (en) |
| DE (1) | DE602007011311D1 (en) |
| TW (1) | TW200844285A (en) |
| WO (1) | WO2008055571A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20100390U1 (en) * | 2010-12-23 | 2011-03-24 | Roj Srl | GROUP OF OPTICAL SENSORS RELAXING IN A PORGITRAMA FOR TEXTILE FRAMES. |
| EP2497734B1 (en) * | 2011-03-10 | 2015-05-13 | SSM Schärer Schweiter Mettler AG | Method for investigating the quality of the yarn winding density on a yarn bobbin |
| ITMI20112369A1 (en) * | 2011-12-23 | 2013-06-24 | Btsr Int Spa | YARN ACCUMULATION METHOD AND DEVICE TO POWER A THREAD WITHOUT CREATING TORSIONS OF THE SAME |
| JP2015148035A (en) * | 2014-02-10 | 2015-08-20 | 村田機械株式会社 | Yarn capture device and yarn winder |
| EP2907907B1 (en) * | 2014-02-13 | 2017-05-03 | L.G.L. Electronics S.p.A. | Storage yarn feeder with rotary drum and yarn-unwinding sensor |
| CN104006812B (en) * | 2014-06-13 | 2016-08-24 | 苏州艾吉威机器人有限公司 | Optical navigation sensor |
| ITMI20150031U1 (en) | 2015-02-12 | 2016-08-12 | Btsr Int Spa | WIRE FEEDER, OF THE ROTARY DRUM TYPE WITH DENSITY DETECTION DETECTED ON IT |
| CN105937084B (en) * | 2016-06-23 | 2017-12-08 | 苏州汇川技术有限公司 | Weft accumulator back yarn control system and method |
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| CN1215476A (en) * | 1996-04-01 | 1999-04-28 | Iro有限公司 | Opto-electronic device |
| CN2685826Y (en) * | 2002-08-07 | 2005-03-16 | 欧姆龙株式会社 | Photoelectrical sensor |
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2007
- 2007-10-09 WO PCT/EP2007/008767 patent/WO2008055571A1/en active Application Filing
- 2007-10-09 DE DE602007011311T patent/DE602007011311D1/en active Active
- 2007-10-09 CN CN2007800417770A patent/CN101563489B/en not_active Expired - Fee Related
- 2007-10-09 AT AT07818840T patent/ATE491834T1/en not_active IP Right Cessation
- 2007-10-09 EP EP07818840A patent/EP2082085B1/en not_active Not-in-force
- 2007-10-25 TW TW096140078A patent/TW200844285A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215476A (en) * | 1996-04-01 | 1999-04-28 | Iro有限公司 | Opto-electronic device |
| CN2685826Y (en) * | 2002-08-07 | 2005-03-16 | 欧姆龙株式会社 | Photoelectrical sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2082085B1 (en) | 2010-12-15 |
| TW200844285A (en) | 2008-11-16 |
| DE602007011311D1 (en) | 2011-01-27 |
| WO2008055571A1 (en) | 2008-05-15 |
| EP2082085A1 (en) | 2009-07-29 |
| CN101563489A (en) | 2009-10-21 |
| ATE491834T1 (en) | 2011-01-15 |
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