CN102002799B - Weft yarn detector for a jet loom - Google Patents
Weft yarn detector for a jet loom Download PDFInfo
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- CN102002799B CN102002799B CN2010102640201A CN201010264020A CN102002799B CN 102002799 B CN102002799 B CN 102002799B CN 2010102640201 A CN2010102640201 A CN 2010102640201A CN 201010264020 A CN201010264020 A CN 201010264020A CN 102002799 B CN102002799 B CN 102002799B
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- connecting pipe
- optical fiber
- glass fibre
- reed
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/34—Weft stop motions
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Abstract
The invention relates to a weft yarn detector for a jet loom, comprising a support shell (20) and optical fibers (21,22,43,44). The support shell (20) moves into and out in a shuttle path between two lines of warp yarns (T) and comprises fiber pipes (29,30,31) for housing the optical fibers (21,22,43,44). The support shell (20) comprises a first side surface facing a reed (141) and a second side surface apart from the first side surface and facing the cloth fell (W1). At least one faucet (32) of the fiber pipes (29,30,31) is opened in the first, second side surfaces.
Description
Technical field
The present invention relates to be used for the finding lost pick device of jet loom, this jet loom sprays fluid and impacts the weft yarn that (battens) is pushed to promote weft yarn through warp thread and with the reed on the slay.
Background technology
The japanese publication announces that No.5-71046 has described a kind of finding lost pick device, it weft yarn that comprises that light projection optical fiber and light-receiving optical fiber influence the cloth quality widely with supervision state that shuttles back and forth.Light projection optical fiber and light-receiving optical fiber are disposed in the FDDI FDM Fiber Duct that extends through support component (support housing), and said support component moves into and shift out the race that is formed between the warp thread in a row.(passage shuttles back and forth when passing the weft yarn guiding channel; When the distal portions of weft yarn flying passage) got into the projection scope of light projection optical fiber, the light that throws distal surface (light projection surface) projection of optical fiber from light received by the reflection of the distal portions of weft yarn and by the distal surface of light-receiving optical fiber (optical receiving surface).
As above-mentioned disclosed shown in Figure 7,, must make the distally (weft yarn guiding channel side) of light projection optical fiber crooked to guide light projection optical fiber towards the weft yarn guiding channel in order illumination to be penetrated pass the weft yarn of weft yarn guiding channel.In addition, in order suitably to receive reverberation, must make the distally (weft yarn guiding channel side) of light-receiving optical fiber crooked to guide light-receiving optical fiber towards the weft yarn guiding channel from weft yarn.
By this way, FDDI FDM Fiber Duct must be crooked in the distally of support component.When inserting optical fiber in the FDDI FDM Fiber Duct, the optical fiber that inserts from the basic side of FDDI FDM Fiber Duct must be bent to the adaptation FDDI FDM Fiber Duct.Yet, be difficult to when just inserting optical fiber, make its bending.
Being arranged in the optical fiber that moves into and shift out in the support component that is formed on the race between the warp thread maybe be owing to wearing and tearing with the friction of warp thread.Can be with glass fibre as optical fiber with excellent wear resistance.Yet glass fibre is difficult to bending, especially in the time must when being inserted into, making it crooked.
Therefore, support component can be formed by two sections, and each section has pit.Through two sections are engaged, pit forms FDDI FDM Fiber Duct between two sections.This class formation is easy to be inserted into FDDI FDM Fiber Duct with the optical fiber that allows to prebend into adaptation FDDI FDM Fiber Duct shape.
Can use adhesive to adhere to and engage two sections.Yet adhesive possibly spread out between the composition surface of two sections.When the adhesive that spread out solidifies, the adhesive that warp thread possibly rub and solidify.This possibly cut off warp thread.
For the wearing and tearing that prevent to cause owing to friction with warp thread, expectation be to move into and shift out the support component that is formed on the race between the warp thread in a row and be made of metal.In addition, for fear of the problem that causes owing to the frictional adhesion agent, preferably two metal sections are welded together.Can prevent by the rub cut-out of the yarn that warp thread causes of support component through the face of weld of after welding, polishing.
Yet, when after between two sections, arranging optical fiber, it being welded together, possibly make fibre strain owing to welding the heat that produces.This possibly reduce the transmittancy of optical fiber.
Summary of the invention
The objective of the invention is under the situation that does not reduce the optical fiber transmittancy, optical fiber to be inserted support housing, this support housing moves into and shifts out the race that is formed between the warp thread in a row.
One side of the present invention is a kind of finding lost pick device that is used for jet loom, and this jet loom comprises reed and the slay that keeps this reed, and this reed impacts the weft yarn that is pushed race by the injection fluid, and this race is formed between two row's warp thread.Said finding lost pick device provides and comprises fiber conduit and be arranged in the support housing on the said slay.Said support housing can move into and shift out race through the gap that forms between the warp thread in a row of two row's warp thread.Said support housing has first side surface that faces said reed and away from first side surface and face second side surface of fell.For any the optical fiber at least in light projection optical fiber and the light-receiving optical fiber is disposed in the fiber conduit, thereby face the passage that shuttles back and forth of the weft yarn that forms by reed.Fiber conduit comprises in the distal face of support housing towards the distal openings of the passage that shuttles back and forth, in the basic side of support housing and be used to insert the socket of optical fiber and the crooked pipeline that between said socket and said distal openings, extends.Said socket opening in any at least in first side surface and second side surface.
Through the following detailed description that the accompanying drawing that combines to illustrate for example the principle of the invention carries out, it is obvious that others of the present invention and advantage will become.
Description of drawings
Through with reference to the at present following explanation and the accompanying drawing of preferred embodiment, be appreciated that the present invention, with and purpose and advantage, in the accompanying drawings:
Fig. 1 is a perspective view, shows the jet loom that comprises according to the finding lost pick device of first embodiment of the invention;
Fig. 2 A is the cross sectional side view that the support component of Fig. 1 is shown;
Fig. 2 B is the cross sectional side view that the weft yarn promotion pilot jet of Fig. 1 is shown;
Fig. 3 A is the cross sectional side view that the support component of Fig. 2 A is shown;
Fig. 3 B is the cross sectional side view that the support housing of Fig. 3 A is shown;
Fig. 4 A is the cross sectional side view that the support component of Fig. 2 A is shown;
Fig. 4 B is the partial enlarged drawing of Fig. 4 A;
Fig. 5 A is the cutaway view of the line 5A-5A intercepting in Fig. 3 A;
Fig. 5 B is the cutaway view of the line 5B-5B intercepting in Fig. 3 A;
Fig. 5 C is the cutaway view of the line 5C-5C intercepting in Fig. 3 A;
Fig. 5 D is the cutaway view of the line 5D-5D intercepting in Fig. 3 A;
Fig. 6 A is the schematic plan view of Fig. 1;
Fig. 6 B is the partial cut away side views of Fig. 3 A;
Fig. 7 A to 7F is the diagram that the program that is used to insert glass fibre is shown;
Fig. 8 is the cutaway view that another embodiment is shown;
Fig. 9 is the cutaway view that another embodiment is shown; And
Figure 10 is the cutaway view that another embodiment is shown.
The specific embodiment
To the first embodiment of the present invention be discussed referring to figs. 1 through 7 now.
With reference to Fig. 1, slay 11 has injection air (fluid) and promotes main burner 12 to promote weft yarn Y through the weft yarn that is formed on the race between two row's warp thread T.A plurality of weft yarns promote pilot jet 13 and aim at along the installation surface 111 that the front surface slay 11 limits.Pilot jet 13 each from spray-hole 131 injection airs (with reference to Fig. 2 B and 6A), so that the transmission of branch journey has been pushed into the weft yarn Y in the race of warp thread T.As a result, weft yarn Y passes the passage 142 that shuttles back and forth, and this passage 142 that shuttles back and forth extends through the reed 141 of press strip (batten) 14.
After promoting the weft yarn Y of predetermined length through race, the reed 141 of the press strip of integrally swinging with slay 11 14 is pressed onto weft yarn Y the fell W1 of the W that weaves cotton cloth.
Shown in Fig. 2 A and 2B, brace groove 16 is passed through installation surface 111 along the longitudinal extension of slay 11.Brace groove 16 comprises the narrow part of opening to installation surface 111 161, the wide part 162 and the step 163 that below narrow part 161, form.Step 163 between narrow part 161 and the wide part 162 is parallel to installation surface 111 and extends.
With reference to Fig. 2 A, a plurality of back-up blocks 17 are coupled to installation surface 111.Each back-up block 17 is admitted two bolts 18.Each bolt 18 has threaded portion 181, and it comprises the distal portions that highlights from back-up block 17.Locking nut 19 is secured to the ledge of bolt 18.Bolt 18 has the turret head 182 that is accommodated in the wide part 162.
Thereby 182 turning abuts against the wall surface of wide part 162 and allows fastening locking nut 19.Locking nut 19 fastening forces 182 to be fixed in slay 11 against step 163 and with back-up block 17.The position that couples of back-up block 17 can be along vertical change of slay 11.
With reference to Fig. 2 B, the back-up block 15 that supports pilot jet 13 is couple to slay 11 by means of the device identical with the device that back-up block 17 is couple to slay 11 (being bolt 18 and locking nut 19).Each pilot jet 13 has the distal portions that moves into and shift out race along with the swing of slay 11 through the gap that between warp thread T, forms.
With reference to Fig. 3 A and 4A, tubular retainer 26 is fixed in each back-up block 17.Retainer 26 comprises upside that limits narrow tube 27 and the downside that limits large diameter pipe 28.Large diameter pipe 28 has the diameter bigger than the diameter of narrow tube 27.Narrow tube 27 has the cavity of admitting metallic rod shaped support housing 20.
Shown in Fig. 2 A, support housing 20 has distal portions 23, and its swing along with slay 11 moves into and shift out race through the gap that between warp thread T, forms.Retainer 26 and support housing 20 form the support component that can move into and shift out race from the gap that between warp thread T, forms.
To 5D, form housing 20 with reference to Fig. 5 A through engaging two sections 24 and 25.Shown in Fig. 5 B, section 24 has the basic side that limits maintenance cavity 291, and section 25 has the basic side that limits maintenance cavity 292.In addition, section 24 has the distally that comprise two connection cavitys 301 and 311, and section 25 has the distally that comprise two connection cavitys 302 and 312.
With reference to Fig. 3 B, be communicated with cavity 301 with 311 and maintenance cavity 291 continue.Being communicated with cavity 301 and 311 is the straight-line grooves that extend in parallel to each other.Keep cavity 291 to be included in and crooked cavity part 341 that is communicated with near the bending of part that cavity 301 and 311 continues and the straight cavity part 351 that continues with crooked cavity part 341.Keep cavity 291 to have opening 321, it is opened in the base portion of section 24 and in the rear portion that faces reed 141 of section 24.
With reference to Fig. 4 A, be communicated with cavity 302 with 312 and maintenance cavity 292 continue.Being communicated with cavity 302 and 312 is the straight-line grooves that extend in parallel to each other.Keep cavity 292 to be included in and crooked cavity part 342 that is communicated with near the bending of part that cavity 302 and 312 continues and the straight cavity part 352 that continues with crooked cavity part 342.Keep cavity 292 to have opening 322, it is opened in the base portion of section 25 and in the rear portion that faces reed 141 of section 25.
Shown in Fig. 5 A, the composition surface 241 and 251 in section 24 and 25 is engaged with under the state together, keeps cavity 291 and 292 to form and keeps pipeline 29.In addition, form the straight cavity part 351 of a part that keeps cavity 291 and 292 and the straight pipeline 35 that 352 formation conducts keep the part of pipeline 29.
Shown in Fig. 5 B, the composition surface 241 and 251 in section 24 and 25 is engaged with under the state together, is communicated with cavity 301 and 302 and forms and first connecting pipe 30 that keeps pipeline 29 to be communicated with.In addition, the composition surface 241 and 251 in section 24 and 25 is engaged with under the state together, is communicated with cavity 311 and 312 and forms and second connecting pipe 31 that keeps pipeline 29 to be communicated with.
Shown in Fig. 3 A and 4A, first connecting pipe 30 and second connecting pipe 31 extend along the direction that warp thread T extends abreast.First connecting pipe 30 has the light projection opening 303 that faces the passage 142 that shuttles back and forth, and second connecting pipe 31 has the light-receiving opening 313 that faces the passage 142 that shuttles back and forth.The light projection opening 303 that serves as distal openings is spaced apart with the light-receiving opening 313 that also serves as distal openings.
First connecting pipe 30 is formed for inserting first fiber conduit that light throws glass fibre 21 with maintenance pipeline 29, and light projection glass fibre 21 is an optical fiber.Second connecting pipe 31 and maintenance pipeline 29 are formed for inserting second fiber conduit of light-receiving glass fibre 22, and light-receiving glass fibre 22 is an optical fiber.
Shown in Fig. 5 B, the composition surface 241 and 251 in section 24 and 25 is engaged with under the state together, and opening 321 and 322 forms socket 32.Shown in Fig. 5 C, crooked cavity part 341 and 342 forms crooked pipeline 34, and curved section surface 331 and 332 forms the curved guide surface 33 of serving as guiding surface.
Shown in Fig. 3 A and 4A, socket 32 comprises the opening 36 opened towards reed 141 and extends to the opening 37 that the direction of basic side is opened along the distally from support housing 20.Curved guide surface 33 from socket 32 towards distal openings near pipeline form wall with more near the relative wall surface of the wall surface of reed 141.
With reference to Fig. 5 B, thereby the composition surface 241 and 251 of section 24 and 25 has the outward flange 242 and 252 that is soldered and forms welding portion 201 respectively.Polished in the surface of welding portion 201.
Shown in Fig. 3 A and 4A, light projection glass fibre 21 is inserted into light-receiving glass fibre 22 and keeps in the pipeline 29.Light projection glass fibre 21 is inserted in first connecting pipe 30, and light-receiving glass fibre 22 is inserted in second connecting pipe 31.Opening 36 is along the longitudinal tensile strain of the maintenance pipeline 29 that forms first and second fiber conduits.
Light projection glass fibre 21 forms in being inserted into first and second fiber conduits and corresponding shape shown in Fig. 3 A and the 4A with light-receiving glass fibre 22 before.Light projection glass fibre 21 comprises base section 211, the straight part 212 of far-end and the sweep 213 that connects base section 211 and the straight part 212 of far-end.Light-receiving glass fibre 22 comprises base section 221, the straight part 222 of far-end and the sweep 223 that connects base section 221 and the straight part 222 of far-end.
Curved guide surface 33 has along the radius of curvature of the planar interception that is parallel to composition surface 241 and 251, and this radius of curvature is less than the minimum profile curvature radius along the sweep 223 of same supposition planar interception.
With reference to Fig. 5 A, have and the diameter of light projection glass fibre 21 and the identical throat width H1 of diameter of light-receiving glass fibre 22 along the socket 32 (with reference to Fig. 5 B) of direction of the passage 142 that shuttles back and forth.In addition, except the part relative (being positioned at the sweep of the side of the W that more approaches to weave cotton cloth), have the duct width H2 identical along the maintenance pipeline 29 of the direction of the passage 142 that shuttles back and forth with throat width H1 with socket 32.In addition, first connecting pipe 30 has and the identical pipe diameter of duct width H2 that keeps pipeline 29 with second connecting pipe 31.Keep pipeline 29 to have along the duct width H3 of warp thread T bearing of trend, it is than the big twice of duct width H2.
Shown in Fig. 4 B, the metal coupler 38A that is used for light projection glass fibre 21 is maintained at large diameter pipe 28 with the metal coupler 38B that is used for light-receiving glass fibre 22.Coupler 38A comprises along first match-drill 39 of the longitudinal extension of large diameter pipe 28 and second match-drill 41.Coupler 38B comprises along first match-drill 40 of the longitudinal extension of large diameter pipe 28 and second match-drill 42.
The base section of light projection glass fibre 21 (end relative with the passage 142 of shuttling back and forth) is fitted in first match-drill 39 of coupler 38A.The base section of light-receiving glass fibre 22 is fitted in first match-drill 40 of coupler 38B.The distal portions of light projection plastic optical fibre 43 (more approaching the end of light projection glass fibre 21) is fitted in second match-drill 41 of coupler 38A.The distal portions of light-receiving plastic optical fibre 44 (more approaching the end of light-receiving glass fibre 22) is fitted in second match-drill 42 of coupler 38B.
The distal face 431 of the cardinal extremity face 215 of light projection glass fibre 21 and light projection plastic optical fibre 43 couples with the mode of plane contact each other.The cardinal extremity face 225 of light-receiving glass fibre 22 and the distal face 441 of light-receiving plastic optical fibre 44 couple with the mode of plane contact each other.
Light projection glass fibre 21 is the many glass fibres that form through a plurality of glass fibre elements 210 of boundling.Light-receiving glass fibre 22 is the many glass fibres that form through a plurality of glass fibre elements 220 of boundling.Light projection plastic optical fibre 43 is the many plastic optical fibres that form through a plurality of plastic optical fibre elements 430 of boundling.Light-receiving plastic optical fibre 44 is the many plastic optical fibres that form through a plurality of plastic optical fibre elements 440 of boundling.Plastic optical fibre element 430 and 440 is the plastic optical fibres with superior light transmitting property, such as acrylic resin or Merlon.
Light projection plastic optical fibre 43 is connected to light projecting unit (for example, light emitting diode), and the light projecting unit is attached to the stationary part of loom.Light-receiving plastic optical fibre 44 is connected to photoelectric conversion unit, and photoelectric conversion unit also is attached to the stationary part of loom.
Shown in Fig. 6 A and 6B, light projection glass fibre 21 has the distal face 214 that exposes from the light projection opening 303 of first connecting pipe 30 (with reference to Fig. 4 A) end face of passage 142 (more approach shuttle back and forth).Light-receiving glass fibre 22 has the distal face 224 that exposes from the light-receiving opening of second connecting pipe 31 (with reference to Fig. 4 A) 313 end face of passage 142 (more approach shuttle back and forth).Pass the distal face 214 that light projection plastic optical fibre 43 throws glass fibre 21 with light and arrives light projection glass fibre 21 from the light of light projecting unit emission.The light that passes light projection glass fibre 21 throws towards the passage 142 that shuttles back and forth from distal face 214.
Shown in Fig. 6 A, light projection glass fibre 21 forms light projection area X in the passage 142 that shuttles back and forth.In addition, the distal face 224 of light-receiving glass fibre 22 is arranged to and faces the light projection area X that in the part of passage 142 of shuttling back and forth, forms.
When the distal portions of the weft yarn Y that is pushed through the passage 142 that shuttles back and forth arrives light projection area X, penetrate the distal portions of weft yarn Y from the illumination of light projection glass fibre 21 projections, the distal portions of weft yarn Y reflects light.Light by the reflection of the distal portions of weft yarn Y is received by the distal face 224 of light-receiving glass fibre 22.
Light-receiving glass fibre 22 is sent to optical-electrical converter via light-receiving glass fibre 22 and the light that light-receiving plastic optical fibre 44 will have been received by distal face 224.According to the amount of the light that receives, optical-electrical converter generates the signal of telecommunication that is sent to the control module (not shown).Control module uses this signal of telecommunication to confirm the arrival opportunity of far-end X to the light projection area of weft yarn Y.Promote with the weft yarn that carry out subsequently with injection cycle the injection opportunity that machine information is used to for example to control pilot jet 13 during the arrival of far-end of the weft yarn Y of identification by this way, and the control weft yarn is braked.
Fig. 3 A is illustrated in the maximum state of race that forms between the warp thread T.In this state, the top of socket 32 is arranged in the race of warp thread T.
Now discussion is used to form support housing 20 and light is throwed the program that glass fibre 21 and light-receiving glass fibre 22 insert support housings 20.
With reference to Fig. 7 A, composition surface 241 and 251 applying adhesive (not shown) to the section that separates 24 and 25.With reference to Fig. 7 B, composition surface 241 and 251 is bonded together so that adhesive is temporarily bonding with section 24 and 25 then.
With reference to Fig. 7 C, after adhesive solidifies,, thereby form welding portion 201 by the outward flange 242 of the composition surface 241 in the section 24 and 25 of temporary adhesion and 251 and 252 experience LASER BEAM WELDING.This has accomplished support housing 20.
Shown in the dotted line among Fig. 7 D, from opening 36 light is throwed glass fibre 21 and insert the socket 32.Then, shown in the solid line among Fig. 7 D, the far-end that light is throwed glass fibre 21 inserts in first connecting pipe 30.In this state, the far-end of light projection glass fibre 21 is projected into outside first connecting pipe 30 from light projection opening 303.The straight part 212 of light projection glass fibre 21 is fitted in first connecting pipe 30 of first fiber conduit, and the sweep 213 of light projection glass fibre 21 is fitted in the crooked pipeline 34 that keeps pipeline 29.The base section 211 of light projection glass fibre 21 is fitted in the straight pipeline 35 that keeps pipeline 29.
Shown in the solid line among Fig. 7 D, after opening 36 inserts light-receiving glass fibre 22 sockets 32, shown in the solid line among Fig. 7 D, the far-end of light-receiving glass fibre 22 is inserted in second connecting pipe 31.In the sweep 223 of the distal side that keeps light-receiving glass fibre 22 and straight part 222 insertions second connecting pipe 31 with light-receiving glass fibre 22 when curved guide surface 33 contacts.The far-end of light-receiving glass fibre 22 is inserted in second connecting pipe 31, till it is projected into outside the light-receiving opening 313 (with reference to Fig. 7 C).The straight part 222 of light-receiving glass fibre 22 is fitted in second connecting pipe 31 of second fiber conduit, and the sweep 223 of light-receiving glass fibre 22 is fitted in the crooked pipeline 34 of second FDDI FDM Fiber Duct.The base section 221 of light-receiving glass fibre 22 is fitted in the straight pipeline 35 that keeps pipeline 29.
After inserting light-receiving glass fibre 22 in second connecting pipe 31, to keeping pipeline 29 filling adhesives 47 (with reference to Fig. 7 F).Preferably, for example use epoxy resin as adhesive 45 and 47.
After adhesive 47 solidifies, the surface of polishing support housing 20.Also the polish far-end of welding portion 201, light projection glass fibre 21 and the far-end of light-receiving glass fibre 22.Therefore, the distal face 224 of the distal face 214 of light projection glass fibre 21 and light-receiving glass fibre 22 is formed and has curved surface.When polishing formed the edge of opening 361 and 362 (with reference to Fig. 5 A) of opening 36 of socket 32, the outer surface 471 (with reference to Fig. 5 A) of the adhesive 47 that comes out from opening 36 distributions was also polished.
First embodiment has following advantage.
(1) opens towards reed 141 as the opening 36 of the part of socket 32.In addition, opening 36 is along the longitudinal tensile strain as the maintenance pipeline 29 of the part of fiber conduit.This type of shaped aperture 36 helps that light is throwed glass fibre 21 and is inserted in first fiber conduit between two sections 24 and 25 that are soldered and are bonded together.After light projection glass fibre 21 was inserted in first connecting pipe 30, light-receiving glass fibre 22 was inserted in second connecting pipe 31.The part that faces reed 141 of the rear side of socket 32 or socket 32 is used to insert in second connecting pipe 31 to major general's light-receiving glass fibre 22.Socket 32 helps light-receiving glass fibre 22 is inserted in second fiber conduit between two sections that are soldered and engage 24 and 25.Therefore, can after engaging metal section 24 and 25 with formation support housing 20, insert optical fiber through welding.Therefore, do not reduce the transmittancy of optical fiber at the heat of welding section 24 and generation in 25 o'clock.
(2) when the straight part 22 of light-receiving glass fibre 22 is inserted in second connecting pipe 31, the sweep 223 of curved guide surface 33 guiding light-receiving glass fibres 22.Curved guide surface 33 helps in second connecting pipe 31 of light-receiving glass fibre 22 insertions as the part of second fiber conduit.
(3) along the radius of curvature of the curved guide surface 33 on the supposition plane that is parallel to composition surface 241 and 251 less than minimum profile curvature radius along the sweep 223 on this supposition plane.Therefore, when inserting light-receiving glass fibre 22 in second connecting pipe 31, between the sweep 223 of light-receiving glass fibre 22 and curved guide surface 33, produce clearance.This type of clearance makes the insertion in light-receiving glass fibre 22 to second connecting pipes 31 smooth-going.
(4) following structure helps that light is throwed glass fibre 21 and inserts with light-receiving glass fibre 22 and keep in the pipelines 29: the shuttle back and forth A/F H1 of socket 32 of passage 142 directions of edge is identical with the diameter of optical fiber.
(5) the first straight connecting pipe 30 has the identical pipe diameter of diameter that throws glass fibre 21 with light, and the directive property that this first straight connecting pipe 30 increases light projection glass fibres 21 is also improved the finding lost pick accuracy.Likewise, the second straight connecting pipe 31 has the pipe diameter identical with the diameter of light-receiving glass fibre 22, and this second straight connecting pipe 31 increases the directive property of light-receiving glass fibre 22 and improves the finding lost pick accuracy.
(6) before welding, temporarily two sections 24 and 25 are mutually combined with adhesive.Through temporarily two sections 24 and 25 being combined the welding that helps carrying out subsequently with adhesive in advance.
(7) the finding lost pick accuracy becomes complanation more along with the distal face of light projection glass fibre 21 and light-receiving glass fibre 22 and increases.The distal face of light projection glass fibre 21 and light-receiving glass fibre 22 is polished into curved surface.Therefore, in the glass fibre 21 and 22 of many glass structures of the glass fibre element 210 that had boundling respectively and 220, each glass fibre element 210 and 220 distal face are actually the plane.This increases the finding lost pick accuracy.
(8) light projection glass fibre 21 is aimed at along the direction that warp thread T extends with light-receiving glass fibre 22 each other.In addition, keep pipeline 29 to have along the section shape of the direction elongation of warp thread T extension.Therefore, even there is not socket 32, light projection glass fibre 21 also can insert in first connecting pipe 30.Yet,, do not have rim space (marginal space) in case light projection glass fibre 21 is inserted in first fiber conduit.Therefore, can not be only light-receiving glass fibre 22 be inserted and keep the pipelines 29 from the opening 37 of socket 32.For the application of the structure of aiming at each other along the bearing of trend of weft yarn T for the projection of light wherein glass fibre 21 and light-receiving glass fibre 22, the socket 32 with opening 36 of opening towards reed 141 is preferred.
(9) support housing 20 has cylinder shape distance end part and base section; This cylinder shape distance end partly comprises first connecting pipe 30 and second connecting pipe 31, the socket 32 that this base section is arranged in the basic side of this distal portions and comprises straight pipeline 35 and open in the side that is facing reed 141 of support housing 20.The gap that between weft yarn T, is formed by cylinder shape distance end part is greater than the width H1 (with reference to Fig. 5 A) of socket 32.Therefore, the edge of socket 32 does not contact with weft yarn T.This prevents that weft yarn T is cut off.In addition, far-end 141 bendings of light projection glass fibre 21 and light-receiving glass fibre 22 from straight pipeline 35 towards reed.Therefore, through the socket 32 in the side that faces reed 141 of opening support housing 20, make light projection glass fibre 21 more smooth-going to the insertion in the fiber conduit of support housing 20 with light-receiving glass fibre 22.
The present invention can come practical implementation through following form.
As shown in Figure 8, can cut sth. askew to the edge of opening 361A and the 362A of the opening 36 that forms socket 32 (formation fillet).This will prevent the friction sawing warp thread T with edge of opening 361A and 362A.In addition, through the outer surface 471 of adhesive 47 is spaced apart with edge of opening 361 and 362, with the outer surface 471 of the adhesive 47 of need not polishing.
As substituting of curved guide surface 33, as shown in Figure 9, can form inclined surface 48, it is along being straight when the supposition plane of composition surface 241 and 251 (with reference to Fig. 5 A) intercepting of section 24 and 25 is seen.
Shown in figure 10, the longitudinally length of opening 36 along fiber conduit can be set, when maximum, socket 32 is located at the outside of the race that forms between the warp thread T with convenient race.This will be avoided contacting of edge of opening 361 and 362 (with reference to Fig. 5 A) and warp thread T and avoided owing to edge of opening 361 and 362 and the damage of the warp thread T that causes of the friction of warp thread T.
Can be only on the outward flange 242 and 252 at distal portions 23 places of support housing 20, carry out welding.
Under the situation of adhesive of no use, can the outward flange 242 and 252 of section 24 and 25 be welded together two sections 24 and 25 temporary transient combinations.
Light projection glass fibre 21 and light-receiving glass fibre 22 can each monofilament of optical fiber naturally.
Can be in discrete and adjacent support component arranged light projection glass fibre 21 and light-receiving glass fibre 22 discretely.
Can integrally form support housing 20 through modes such as castings.Even in this case, as long as support housing 20 comprises socket 32, just can support housing 20 with the optical fiber inserted mode system in.This transmittancy that prevents optical fiber is owing to heat, distortion etc. reduces.
Claims (7)
1. finding lost pick device that is used for jet loom; Said jet loom comprises reed (141) and keeps the slay (11) of said reed (141); Said reed (141) impacts the weft yarn (Y) that is pushed race by the injection fluid, and said race is formed between two row's warp thread (T), and said finding lost pick device comprises:
Support housing (20); It comprises fiber conduit (29,30,31) and is disposed on the said slay (11); Wherein, Said support housing (20) can move into through the gap that forms between the warp thread (T) in a row of said two row's warp thread (T) and shift out said race, and said support housing (20) has first side surface that faces reed (141) and away from said first side surface and towards second side surface of fell (W1); And
Optical fiber (21,22,43,44); Its in light projection optical fiber (21,43) and the light-receiving optical fiber (22,44) at least any; Be disposed in the said fiber conduit (29,30,31), thereby face the passage that shuttles back and forth (142) of the weft yarn (Y) that forms by reed (141);
It is characterized in that; Said fiber conduit (29,30,31) comprises that the distal face that is positioned at said support housing (20) is towards the distal openings (303,313) of the said passage that shuttles back and forth (142), the crooked pipeline (34) that is positioned at the basic side of said support housing (20) and is used to insert the socket (32) of said optical fiber (21,22,43,44) and between said socket (32) and said distal openings (303,313), extends; Wherein, said socket (32) opening in any at least in said first side surface and said second side surface.
2. finding lost pick device as claimed in claim 1 is characterized in that:
Pipeline forms wall; It forms said crooked pipeline (34) and comprises first wall surface of more approaching said reed (141) and second wall surface that faces said first wall surface; Wherein, Said first wall surface comprises towards the crooked guiding surface (33) of said reed (141), and said guiding surface (33) from said socket (32) towards said distal openings (303,313) near said second wall surface at least till the centre position before arriving far-end.
3. finding lost pick device as claimed in claim 1; It is characterized in that; Said socket (32) has along the A/F (H1) of the said passage that shuttles back and forth (142) bearing of trend, and said optical fiber (21,22,43,44) has and the identical diameter of said A/F (H1).
4. finding lost pick device as claimed in claim 1 is characterized in that, said fiber conduit (29,30,31) comprises the connecting pipe (30,31) that continues with distal openings (303,313), and wherein, said connecting pipe (30,31) is a straight pipeline.
5. finding lost pick device as claimed in claim 1; It is characterized in that; Said support housing (20) comprises second connecting pipe (31) that keeps pipeline (29), first connecting pipe (30) that is communicated with maintenance pipeline (29) and be communicated with maintenance pipeline (29); Wherein, Said light projection optical fiber (21,43) and said light-receiving optical fiber (22,44) are remained in the said maintenance pipeline (29) abreast, and said light projection optical fiber (21,43) is inserted in said first connecting pipe (30), and said light-receiving optical fiber (22,44) is inserted in said second connecting pipe (31); Said first connecting pipe (30) and said second connecting pipe (31) are aimed at along the swaying direction of said reed (141), and said socket (32) is formed in the said maintenance pipeline (29).
6. finding lost pick device as claimed in claim 5; It is characterized in that; Said first connecting pipe (30) comprises the light projection opening (303) that faces the said passage that shuttles back and forth (142); Said second connecting pipe (31) comprises the light-receiving opening (313) that faces the said passage that shuttles back and forth (142), and said light projection opening (303) is spaced apart with said light-receiving opening (313).
7. like each described finding lost pick device in the claim 1 to 6, it is characterized in that said optical fiber (21,22,43,44) forms through a plurality of fibre elements of boundling (210,220).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-196814 | 2009-08-27 | ||
| JP2009196814A JP5218340B2 (en) | 2009-08-27 | 2009-08-27 | Weft detection device in jet loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102002799A CN102002799A (en) | 2011-04-06 |
| CN102002799B true CN102002799B (en) | 2012-03-21 |
Family
ID=43810492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102640201A Expired - Fee Related CN102002799B (en) | 2009-08-27 | 2010-08-25 | Weft yarn detector for a jet loom |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5218340B2 (en) |
| CN (1) | CN102002799B (en) |
| BE (1) | BE1019756A3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102346251A (en) * | 2011-11-01 | 2012-02-08 | 江苏万工科技集团有限公司 | Weft yarn floatation characteristic measurement device |
| JP5999136B2 (en) * | 2014-05-13 | 2016-09-28 | 株式会社豊田自動織機 | Weft detection device in air jet loom |
| JP6372229B2 (en) * | 2014-08-04 | 2018-08-15 | 株式会社豊田自動織機 | Weft detection device in jet loom |
| JP6367784B2 (en) * | 2015-03-27 | 2018-08-01 | 株式会社豊田自動織機 | Weft detection device for air jet loom |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471816A (en) * | 1981-09-25 | 1984-09-18 | Nissan Motor Company, Limited | Optical weft sensor for a loom |
| US6244305B1 (en) * | 1997-11-24 | 2001-06-12 | Eltex Of Sweden Ab | Reflected light type weft monitoring device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252344A (en) * | 1985-04-25 | 1986-11-10 | 株式会社豊田自動織機製作所 | Weft yarn detector in jet loom |
| EP0204093B1 (en) * | 1985-04-05 | 1989-08-02 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | A method and an apparatus for detecting the weft yarn in a jet loom |
| JPH0571046A (en) * | 1991-06-01 | 1993-03-23 | Toyota Autom Loom Works Ltd | Weft yarn sensor in fluid jetting type loom |
| JP2649468B2 (en) * | 1992-12-28 | 1997-09-03 | 一吉 木田 | Weft detector |
| JP2003149504A (en) * | 2001-11-14 | 2003-05-21 | Auto Network Gijutsu Kenkyusho:Kk | Optical connector |
| JP2006328591A (en) * | 2005-05-26 | 2006-12-07 | Toyota Industries Corp | Apparatus for detecting weft in jet loom |
-
2009
- 2009-08-27 JP JP2009196814A patent/JP5218340B2/en not_active Expired - Fee Related
-
2010
- 2010-08-25 CN CN2010102640201A patent/CN102002799B/en not_active Expired - Fee Related
- 2010-08-25 BE BE2010/0504A patent/BE1019756A3/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4471816A (en) * | 1981-09-25 | 1984-09-18 | Nissan Motor Company, Limited | Optical weft sensor for a loom |
| US6244305B1 (en) * | 1997-11-24 | 2001-06-12 | Eltex Of Sweden Ab | Reflected light type weft monitoring device |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2006-328591A 2006.12.07 |
| JP特开平5-71046A 1993.03.23 |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1019756A3 (en) | 2012-12-04 |
| CN102002799A (en) | 2011-04-06 |
| JP2011047078A (en) | 2011-03-10 |
| JP5218340B2 (en) | 2013-06-26 |
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