CN102021723A - Weft detection device for water-jetting type weaving machine - Google Patents
Weft detection device for water-jetting type weaving machine Download PDFInfo
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- CN102021723A CN102021723A CN2010102737086A CN201010273708A CN102021723A CN 102021723 A CN102021723 A CN 102021723A CN 2010102737086 A CN2010102737086 A CN 2010102737086A CN 201010273708 A CN201010273708 A CN 201010273708A CN 102021723 A CN102021723 A CN 102021723A
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Abstract
The invention provides a weft detection device, through which an optical axis of a light projecting part can be easily consistent to the optical axis of a light accepting part when a split type probe of a water-jetting type weaving machine is recombined after being detached. The probe (2) of the device is provided with the light projecting part (4) and the light accepting part (5) which are arranged oppositely with a slit (3) therebetween, wherein the probe (2) is provided with a first head part (7) having the light projecting part (4), a second head part (8) having the light accepting part (5), and a support part (9) for supporting the first and second head parts (7, 8). At least one of the first and second head parts (7, 8) is mounted on the support part (9) through a positioning mechanism (10) which is opposite to the position of support part (9) and limits the first and second head parts (7, 8) along two directions vertical to the optical axis (6).
Description
Technical field
The present invention relates to be used for the weft detector of water jet loom.
Background technology
As a kind of weft detector that is used for water jet loom, have to be formed with and accept to be accompanied by beating-up by the probe of the slit of the parallel of carrying towards fell, by light-projecting portion and light accepting part across described slit subtend, detect described parallel, judge the success or not of wefting insertion through described slit.
As described probe, generally form slit (hereinafter referred to as " monolithic devices ") for cut out otch by machining on single part, a pair of parts that separate leave ground, space (hereinafter referred to as " separation type ") (for example: with reference to patent documentation 1,2) to always forming slit by making up and down but also have.
The probe of monolithic devices, because light-projecting portion and light accepting part are fixed in single parts, therefore have as long as in case make light-projecting portion consistent,, the advantage of optical axis deviation just can not take place then as long as parts do not deform etc. with the optical axis (following also only be called " optical axis ") of light accepting part.But generally also have the gap of the slit narrow situation of (2mm following) therefore has the shortcoming of the state that can't use Visual Confirmation detection faces (light projector face and sensitive surface).Especially, in water jet loom, since parallel with the ratio of hundreds of times (they being more than 1000 times under many situations) in a minute by between the slit, therefore can be attached with on the detection faces of light-projecting portion and light accepting part because of the finish of parallel etc. cause dirty, produce phenomenon such as abrasion, it is dirty, wear away and will cause bad influence to the detection of parallel sometimes.Thereby the detection faces state confirmation difficulty of the probe of monolithic devices, the difficult shortcoming of cleaning, just become to realizing that stable parallel detects the problem in the required maintenance of carrying out.
To this, as what disclosed in the patent documentation 1,2, the probe of separation type can be divided into parts (upper-part, (on) support of the slit upside that comprises light-projecting portion) and comprise the parts (lower member, (descending) support) of the slit downside of light accepting part, each parts constitutes on the support component (carriage) that is supported in removably with these parts splits up and down.Therefore, have the following advantages: can to carry out upkeep operations such as Visual Confirmation and cleaning also convenient and easy by a side of the parts of the parts of described upside and downside or both sides are taken off state to detection faces from support component.
In the formation that patent documentation 1 is put down in writing, the parts of upside and the parts of downside are together tightened by shared screwed part (bolt) with support component and are fixed on the support component.In addition, in the formation that patent documentation 2 is put down in writing, the parts of upside and the parts of downside are installed in support component by screwed part (screw) respectively.But, in the formation of patent documentation 2, its hole that is interspersed with screwed part of the parts of upside and the parts of downside is formed slotted hole, just becomes and can regulate with respect to the position of the fore-and-aft direction (perpendicular to the direction of optical axis and parallel) of each parts of the upside of support component and downside.
But the probe of described separation type has following shortcoming.Just, in described existing technology constitutes, in order to carry out upkeep operation, the parts of upside and/or the parts of downside to be taken off from the carriage as support component, when carrying out assembling with respect to carriage again afterwards Deng upkeep operation, the location of these parts can't accurately be carried out, and the optical axis of light-projecting portion and the optical axis of light accepting part just depart from, thereby exist following problem: can't keep the light-projecting portion of upkeep operation front and back and the subtend precision between the light accepting part.
Bright specifically, for example under the situation of the formation of patent documentation 1, though the position fixedly is to be undertaken by the fastening of bolt, but because generally at external screw thread with twist with it between the screw thread of the internal thread close and have neutral gear (gap), therefore in the rundown process of bolt, position deviation on the fore-and-aft direction will take place in the parts of upside and the parts of downside in the scope of described neutral gear, the possibility of optical axis deviation is just arranged.
In addition, in the formation of patent documentation 2, as previously mentioned, the parts of upside and the parts of downside can be regulated with respect to carriage position on fore-and-aft direction, can light-projecting portion and light accepting part assembled finishing under the state that departs from the fore-and-aft direction, the possibility that optical axis departs from take place because of operating personnel's assemble method problem.
As mentioned above, in the formation of patent documentation 1,2, the subtend precision between light-projecting portion and the light accepting part depends on operating personnel's assembling operation, in order to make between light-projecting portion and the light accepting part subtend exactly, it is quite numerous and diverse that operation has to become, and makes upkeep operation become not only time-consuming but also require great effort.
In addition, because in case variation has taken place in the subtend state between light-projecting portion and the light accepting part, the incident light quantity that enters light accepting part will change, therefore can't make that detection sensitivity remains on the certain value before and after upkeep operation, must carry out the adjusting of amount of gain etc. at every turn when carrying out upkeep operation, just can't detect parallel exactly regulating under the condition of poor.
[patent documentation 1] spy opens clear 58-208445 communique
[patent documentation 2] spy opens clear 51-58566 communique
Summary of the invention
Therefore, problem of the present invention is to provide a kind of weft detector that is used for water jet loom, the weft detector that particularly has the probe of separation type, in order to carry out upkeep operation when re-assemblying after probe is decomposed, can make the optical axis of light-projecting portion and the consistent weft detector of optical axis of light accepting part simply.
In order to reach the purpose of described problem, the present invention is used for the weft detector 1 following formation of water jet loom.That is: weft detector 1 of the present invention has the opposition side that is arranged on the line sending side, is formed with the probe 2 of the slit 3 of accepting to be accompanied by the parallel 20 that beating-up moves, described probe 2 has across described slit 3, makes the light-projecting portion 4 and the light accepting part 5 of the subtend of optical axis 6 unanimities, detection has or not parallel 20 to pass through from described optical axis 6, and judges the success or not of wefting insertion.
Described probe 2 possesses first head member 7 with described light-projecting portion 4, second head member 8 with described light accepting part 5, supports the support component 9 of described first and second head members 7,8, described first and second head members 7,8 of restriction at least one with respect to this support component 9, at detent mechanism 10 perpendicular to the position on the direction of described optical axis 6.
In addition, described detent mechanism 10 comprises: the first restriction face 7a of the described position of restriction on the first direction vertical with described optical axis 6,8a and first touches face 94a, perpendicular to described optical axis 6, and at the second restriction face 75a that is different from the described position of restriction on the second direction of first direction, 85a and second touches face 94b, is used to keep the described second restriction face 75a, and 85a and second touches the fixed part 13 of the state that touches of face 94b.
The described first restriction face 7a, 8a be described first and second head members 7,8 one of at least on, with two faces that form towards rightabout form mutually, be to be with respect to described first direction to intersect the face of ground formation.Described first touches face 94a for being formed on the described support component 9, with this first restriction face 7a, two faces that 8a touches respectively.The described second restriction face 75a, 85a are formed at and are formed with the described first restriction face 7a, on described first head member 7 and/or described second head member 8 of 8a, for be the face that forms with respect to described second direction with intersecting.Described second touches face 94b for being formed on the described support component 9, with this second restriction face 75a, the face that 85a touches mutually.
As perpendicular to the first direction of optical axis 6 and the example of second direction, can be the length direction and the width of head member, or the warp direction of loom and knit width of cloth direction etc.First direction and second direction out of plumb also can.
In addition, with the described first restriction face 7a on the described detent mechanism 10,8a and described first touches face 94a and forms on its length direction parallelly with described optical axis 6, also can touch face 94a with described first and form on the size of its length direction than the described first restriction face 7a, and 8a is long.
And then, described detent mechanism 10 also can constitute: the described first restriction face 7a, 8a and described first touches one of them of face 94a, two sides for the convex guide rail 11 that forms abreast with described optical axis 6, the described first restriction face 7a, 8a and described first touches the opposing party of face 94a, parallel for being formed with described optical axis 6, and embed the two sides of the Baltimore groove 12 of described convex guide rail 11, described fixed part 13 will be for being formed with described first head member 7 of this Baltimore groove 12, one of at least the parts that are fixed in any position on the described convex guide rail 11 of described second head member 8 and described support component 9.
The probe 2 of weft detector 1 constituted comprise first head member 7 with described light-projecting portion 4, second head member 8 with described light accepting part 5, support described first and second head members 7,8 support component 9, because at least one of first head member 7 and second head member 8 is positioned on the both direction perpendicular to optical axis 6 by detent mechanism 10, and be installed on the support component 9 by fixed part 13 with the form that remains on the state that is positioned, therefore can make by visual, to dirty affirmation attached to the detection faces of light-projecting portion 4 and light accepting part 5, and the upkeep operation of the cleaning of detection faces etc. becomes and is easy to simultaneously, in order to carry out re-assemblying after upkeep operation decomposes probe 2, the optical axis of the optical axis of light-projecting portion 4 and light accepting part 5 can easily reach consistent.Therefore, can there is no need after upkeep operation carries out, again optical axis and amount of gain etc. to be regulated so that the subtend state of light-projecting portion 4 and light accepting part 5 easily keeps identical in the front and back that upkeep operation carries out.
In addition, owing to pass through detent mechanism 10 with first and second head members 7,8 one of at least, when the optical axis 6 that makes light-projecting portion 4 and light accepting part 5 is consistent, be installed on the optical axis direction with can move freely, therefore can under the situation that makes optical axis 6 unanimities, regulate the slit amplitude according to parallel with respect to described support component 9.Therefore, be fixing probe with respect to the slit amplitude, the kind of the line that it can detect is limited situation, and probe 2 of the present invention is by regulating the slit amplitude corresponding to various lines, thereby can detect the parallel of different thicknesses line.Specifically, under the situation that detects fine rule, the slit amplitude can be turned down the raising accuracy of detection, otherwise, under the situation that detects thick line, as long as allow thick line can pass through slit greatly slit amplitude accent.
Description of drawings
Fig. 1 is the expression weft detector in one embodiment of the invention and the perspective view of its summary of constructing on every side.
Fig. 2 is the decomposition diagram of the probe of weft detector in one embodiment of the invention.
Fig. 3 is the partial cross section side view (a) and the slit part enlarged cross section figure (b) on every side of the probe of weft detector in one embodiment of the invention.
Fig. 4 is the A-A sectional view among Fig. 3 (a).
Fig. 5 is a part of enlarged cross section figure of each embodiment of expression detent mechanism 10.
Fig. 6 is a part of enlarged cross section figure of other embodiments of expression detent mechanism 10.
Fig. 7 is a part of enlarged cross section figure of other embodiments of expression detent mechanism 10.
Symbol description
1 weft detector
2 probes
3 slits
4 light-projecting portion 4a optical fiber 4b light projector faces
5 light accepting part 5a optical fiber 5b sensitive surfaces
6 optical axises
7 first head members
7a restriction face 71 curved portions 72 slit jaws
73 optic fibre patchhole 73a wire guides, 74 recesses
75 installation portion 75a restriction face, 76 through holes
8 second head members
83 optic fibre patchhole 83a wire guides, 84 recesses
85 installation portion 85a restriction face, 86 through holes
9 support components
91 installing holes, 92 bracket part, 93 optical fiber lead divisions
94 head member support portion 94a touch face 94b and touch face
95 otch, 96 leads are installed slotted hole with hole 97
98 inwalls
10 detent mechanisms
11 convex guide rails
12 Baltimore groove 12a Baltimore groove 12b Baltimore grooves
13 fixed part 13a set bolt 13b keep packing ring 13c nut
14 optical cable 14a connector portions
15 guide parts
20 parallels
21 warps
22 fells
23 Weft insertion nozzles
24 reeds
25 reed wire 25a resigning holes
26 wrap wires
27 weave cotton cloth
30 amplifier units
31 signal processing circuits
32 alignment pins
111 convex guide rails
112 Baltimore grooves
211 convex guide rails
212 Baltimore grooves
311 convex guide rails
312 Baltimore grooves
The specific embodiment
Fig. 1 shows an embodiment of the weft detector of the present invention 1 that is installed on water jet loom.The opposition side of line sending side that will extend in the reed of knitting width of cloth direction 24 grades of loom in Fig. 1 has carried out amplifying and has illustrated, and weft detector 1 is configured in the opposition side of the line sending side of loom, on the extended line of fell 22 knit end near.
The weft detector 1 of present embodiment has the signal processing circuit 31 of output signal of amplifier unit 30, the process amplifier unit 30 of the probe 2 of the optical fiber that is used for projection and accepted light that is built-in with the optical fiber type photoelectric inductor, described inductor.Probe 2 comprises first head member 7, second head member 8, supports the support component 9 of first and second head members 7,8, and first, second head member 7,8 has at interval, and fixing by fixed part 13 with respect to support component 9, reed 24 side places are formed with the slit 3 of opening.The width of slit 3 is greater than the line footpath of parallel 20, and parallel 20 passes between the slit 30.Fixed part 13 specifically is made of set bolt 13a, maintenance packing ring 13b and nut (not marking among the figure), by set bolt 13a is unscrewed, just can easily first head member 7 and second head member 8 be taken off from support component 9.
Though amplifier unit 30 is not marked in the drawings, it comprises: as the light emitting diode of light-projecting component, drive the light projector circuit of light-projecting component, as the phototransistor of photo detector, amplify amplifying circuit from the output of photo detector, according to the output of amplifying circuit, produce the output circuit etc. of the output signal of light inlet and two values of shading.The light that amplifier unit 30 causes by optical fiber 4a, to slit 3 light projectors, is incident to the front end (light accepting part 5) of optical fiber 5a from the front end (light-projecting portion 4) of optical fiber 4a, forms optical axis 6 between slit 3.So, the weft detector 1 of present embodiment is used as the photoelectric sensor of light-transmission type and constitutes, and weft detector 1 blocks optical axis 6 by parallel 20 and carries out the detection of parallel 20.
The signal processing circuit 31 of the output signal of process amplifier unit 30, in the preset time after wefting insertion optical axis 6 because of parallel 20 by under the situation of shading, judge that wefting insertion is normal.On the contrary, if after wefting insertion, passed through preset time do not occur yet optical axis 6 because of parallel 20 by the situation of shading, it is undesired then to be judged as wefting insertion.
Taking advantage of the injection stream of the Weft insertion nozzle 23 that is located at the line sending side to be entered the parallel 20 of the opening of warp 21 by wefting insertion, the beating-up that is accompanied by reed 24 transports and is beaten up towards fell 22.At this moment, the fore-end of parallel 20 is transported by the slit 3 towards the probe 2 of checkout gear 1 by the reed wire that shakes with reed 24 25.
On the reed wire 25, be formed with resigning hole 25a in position with probe 2 subtends, reed wire 25 by beating-up when the fell side is advanced, probe 2 is threaded into resigning hole 25a.Therefore, normally carried out at wefting insertion, the fore-end of parallel 20 surmounts the knitting end of opposition side of line sending side and arrives under the situation of preposition, the fore-end of parallel 20 is pressed into reed wire 25 and slit 3 by probe 2 in the process of beating-up, block the optical axis 6 that light-projecting portion 4 and light accepting part 5 form.The signal processing circuit 31 that has detected the weft detector 1 of parallel 20 judges that wefting insertion has normally been carried out, and proceeds to weave according to this main control unit (not marking among the figure) of judging loom.
On the contrary, because the fore-end of some reason parallel 20 does not arrive under the situation of knitting end of opposition side of line sending side, the fore-end of the process equator 20 of beating-up is not just by slit 3, and optical axis 6 just is not blocked, and weft detector 1 just detects less than parallel 20.Signal processing circuit 31 signal that wefting insertion is bad that does not detect the weft detector 1 of parallel 20 sends to the main control unit (not marking among the figure) of loom, and the main control unit of loom quits work loom.
The normal wefting insertion of quilt, the parallel 20 that beats up, its fore-end is kept by many wrap wires 26.Thereafter, the fore-end of parallel 20 in suitable, by be arranged at weave cotton cloth 27 and probe 2 between blade (not marking among the figure), together downcut with wrap wire 26 on 27 from weaving cotton cloth.
Marked the concrete condition of probe 2 of the weft detector 1 of present embodiment among Fig. 2 and Fig. 3.In Fig. 2, omitted optical fiber 4a, 5a, the part of support component 9 is represented with section form in addition.In addition, for convenience of explanation, define direction as shown in Figure 2.As previously mentioned, probe 2 comprises first head member 7, second head member 8 and the support component 9 as critical piece.And, in these parts, be provided with that the installation site with respect to support component 9 with first head member 7 and second head member 8 positions, as the convex guide rail 11 of detent mechanism 10, Baltimore groove 12 etc.Below each parts are elaborated.
First head member 7 and second head member 8 all are the parts of plate shape, and the material that employing brass etc. is difficult for getting rusty is made.First head member 7 and second head member 8 have the shape of mirror image symmetry, are built-in with the optical fiber 4a of the light projector side of photoelectric sensor among the former, are built-in with the optical fiber 5a of the sensitive side of photoelectric sensor among the latter.
In addition, to be that the center illustrates with first head member 7 among first head member 7 and second head member 8 in the following description, as previously mentioned, because have the shape of mirror image symmetry between first head member 7 and second head member 8, therefore only otherwise add special instruction, the explanation of first head member 7 is suitable for too to second head member 8.
One end place of first head member 7 of length direction is formed with curved portions 71.Curved portions 81 subtends of the curved portions 71 and second head member 8 are formed on the reed side opening, lead to the guide part 15 of slit 3.Guide part 15 has following function: will be by beating-up by the fore-end of the parallel 20 that transports towards fell guide slit 3 exactly.
Be formed with slit jaw 72 in location with curved portions 71 adjacency.Slit jaw 72 forms slit 3 by detent mechanism 10 described later with the slit jaw 82 parallel subtend ground that are formed at second head member 8.Shown in Fig. 3 (b),, vertically be processed with the optic fibre patchhole 73 of the front end that is used for fixing optical fiber 4a with respect to slit jaw 72 in the centre of slit 72.And the front end that is fixed in the optical fiber 4a of this optic fibre patchhole 73 plays a part light-projecting portion 4.In addition, the front end of optical fiber 5a that is fixed in the optic fibre patchhole 83 of second head member 8 plays a part light accepting part 5.
Across slit jaw 72, be formed with recess 74 with the part place of curved portions 71 opposition sides.Recess 84 subtends of the recess 74 and second head member 8 form the space of width greater than slit 3.The fore-end of parallel 20 slit 3, after detecting is accepted in this space, and be used for preventing to hang in probe 2 from the fore-end of 27 parallels 20 that downcut of weaving cotton cloth, make the fore-end of cut parallel 20 promptly to break away from from probe 2 by described blade (figure does not mark).
With the other end of the opposition side of curved portions 71, be formed with the installation portion 75 that is used for first head member 7 is installed on support component 9.On installation portion 75, be formed with the restriction face 75a with support component 9 subtends, the effect of this restriction face 75a is equivalent to the second restriction face of one of inscape for detent mechanism 10.
In addition, be formed with and the Baltimore groove 12a that is formed at convex guide rail 11 tablings on the support component 9 on the restriction face 75a.This Baltimore groove 12a forms and described optic fibre patchhole 73, and is just parallel with optical axis 6.Constitute the effect of restriction face 7a of the two sides of groove, be equivalent to two first restriction faces of one of inscape for detent mechanism 10.
Further, on installing hole 75,, be formed with through hole 76 in across the opposite sides of Baltimore groove 12 curved portions 71.On this through hole 76, be interspersed with the set bolt 13a that is used for first head member 7 is installed on support component 9.To put off until some time later bright set bolt 13a in the back, it also is one of inscape of detent mechanism 10.
Optical fiber lead division 93 is shown in Fig. 3 (a), and from the beginning the top of parts support portion 94 is outstanding towards oblique upper, is provided with the otch 95 of the 14a of connector portion that fastens optical cable 14.In addition, on the end face of the front end of optical fiber lead division 93, be provided with optical fiber 4a, the lead that 5a passes through runs through optical fiber lead division 93 with hole 96 and is communicated with head member described later support portion 94 with a side's in hole 96 peristome, lead.
Head member support portion 94, at the state (with reference to Fig. 1) that probe 2 is installed on loom, have from the opposition side of line sending side and seem 93 that subside, be similar to the foursquare face 94b that touches than bracket part 92 and optical fiber lead division, touch the effect of face 94b, be equivalent to for detent mechanism 10 one of inscape second touch face.Touch and be formed with installation slotted hole 97 that is interspersed with set bolt 13a and the convex guide rail 11 that embeds Baltimore groove 12 on the face 94b.Constitute the effect of the face that touches 94a of the two sides of convex guide rail 11, two first of one of inscape that are equivalent to for detent mechanism 10 touch face.
Though in illustrated example, convex guide rail 11 is by integrated with head member support portion 94, also can be that plate-shaped member with other monomers is installed on the head member support portion 94 with this as convex guide rail 11.At inwall 98 places adjacent, be provided with the peristome of lead with the opposing party in hole 96 with the optical fiber lead division 93 of head member support portion 94.
Next limit the explanation with respect to the detent mechanism 10 of the position of support component 9 of first head member 7 and second head member 8.Detent mechanism 10 in the present embodiment by the convex guide rail 11 of being located at support component 9, be formed at first, second head member 7,8, embed the Baltimore groove 12a of convex guide rail 11,12b and set bolt 13a, the maintenance packing ring 13b and the nut 13c formation that first, second head member 7,8 are fixed in any position on the convex guide rail 11 as fixed part 13.The detent mechanism 10 of present embodiment constitutes: as and the fore-and-aft direction of the perpendicular first direction of optical axis direction and as with the width of the perpendicular second direction of optical axis direction on, when the position with respect to support component 9 of first head member 7 and second head member 8 is limited, allow it to move toward optical axis direction.
The position limit of fore-and-aft direction is by the convex guide rail 11 of support component 9 and the Baltimore groove 12a of first, second head member 7,8, and 12b realizes.Convex guide rail 11 and Baltimore groove 12a, 12b is processed into that to produce thump degree ground precision not chimeric well, they are chimeric by making, adopt set bolt 13a with first, second head member 7,8 are installed on support component 9, the position with respect to the fore-and-aft direction of support component 9 with this first, second head member 7,8 is limited.
Just, at convex guide rail 11 and Baltimore groove 12a, under the state of 12b tabling, since be formed mutually to towards, with respect to two the first restriction face 7as of fore-and-aft direction for intersecting, 8a be formed mutually towards rightabout, touch mutually for two first of intersecting touch face 94a with respect to fore-and-aft direction, so first, second head member 7,8 with respect to support component 9 moving towards fore-and-aft direction are not taken place, in addition, not crooked on the plane that comprises optical axis direction and fore-and-aft direction with respect to support component 9 yet.Therefore, by detent mechanism 10, relevant for fore-and-aft direction, can be with first, second head member 7,8 always assemble in same position with respect to support component 9, and the slit jaw 82 that can make the slit jaw 72 of first head member 7 and second head member 8 subtend abreast always.
On the other hand, the position limit of width is by the restriction face 75a of the installation portion 75,85 of first, second head member 7,8, and the face that the touches 94b of the head member support portion 94 of 85a and support component 9 realizes.Touch face 75a, the face of 85a and head member support portion 94 is processed into the plane well by precision, by limiting face 75a, 85a fits in the face that touches 94b, the employing set bolt 13a of head member support portion 94 with first, second head member 7,8 are fixed on the support component 9, limited with this position with respect to the width of first, second head member 7,8 of support component 9.
That is to say, adopting set bolt 13a with first, second head member 7, under 8 states that are fixed on the support component 9, the second restriction face 75a with respect to the width intersection, 85a touches mutually with the face 94b of touching, and, owing to adopt set bolt 13a with first, second head member 7,8 push on head member support portion 94 so that the above-mentioned state of touching is kept, so first, second head member 7,8 can not take place towards the moving of width with respect to support component 9, in addition, crooked with respect to support component 9 can not take place on the plane that comprises width and fore-and-aft direction yet.Therefore, by detent mechanism 10, relevant for width, can be with first, second head member 7,8 always assemble in same position with respect to support component 9, and first head member 7 and second head member 8 are disposed on the same plane that comprises optical axis direction and fore-and-aft direction.In addition, make the depth d of the height h of convex guide rail 11 dimensionally less than Baltimore groove 12a, 12b so that the second restriction face 75a, 85a with touch face 94b and touch reliably.
As previously mentioned, first, second head member 7,8 is the mirror image symmetric construction, and from Baltimore groove 12a, 12b is to the distance of the fore-and-aft direction of optical axis 6 (optic fibre patchhole 73,83) and from restriction face 75a, and 85a equates to the distance of the width of optical axis 6.And because Baltimore groove 12a, 12b forms parallel with optical axis 6, therefore, by detent mechanism 10 with first, second head member 7,8 are installed on support component 9, always are in the state that make optical axis 6 consistent exactly subtends as the front end of the optical fiber 4a of light-projecting portion 4 with front end as the optical fiber 5a of light accepting part 5 with this.
Therefore, words according to illustrated formation, after first head member 7 and/or second head member 8 taken off from support component 9, when installing once more, as long as make convex guide rail 11 and Baltimore groove 12a, the 12b tabling, will limit face 75a, 85a fits on the face that the touches 94b of head member support portion 94, adopt set bolt 13a to fix, just can make the optical axis of light-projecting portion 4 consistent easily, can make the subtend state of light projector face 4b after reinstalling and sensitive surface 5b be same as state before taking off with the optical axis of light accepting part 5.
Further, in the present embodiment, because being formed at the size of optical axis direction (length direction) of the face that touches 94a (first touches face) of the convex guide rail 11 of support component 9 is formed than first, second head member 7,8 restriction face 7a, it is big that the total of the size of the optical axis direction of 8a (the first restriction face) is wanted, and, on the direction that is parallel to convex guide rail 11, be large-sized slotted hole because slotted hole 97 is installed, therefore can first head member 7 and second head member 8 be fixed in any position on the convex guide rail 11 by set bolt 13a.By this structure, can install within the scope of slotted hole 97 and will regulate with respect to the position of the optical axis direction of first, second head member 7,8 of support component 9.With this, can be to slit jaw 72 under the situation of the optical axis of the optical axis of the light-projecting portion 4 that do not stagger and light accepting part 5, interval between 82, just the width of slit 3 is regulated, and can change easily by the width to slit 3 corresponding to the kind of the parallel 20 that uses in the loom.
In addition, in illustrated embodiment, have across first, second head member 7,8, be positioned at the maintenance packing ring 13b of the opposition side of support component 9.Set bolt 13a runs through the installation slotted hole 97 that keeps packing ring 13b, first, second head member 7,8 and support component 9, as shown in Figure 4, in its front end place threaded engagement nut 13c is arranged.With this, first, second head member 7,8 and support component 9 are with the state that is held packing ring 13b and nut 13c and seizes on both sides by the arms and be able to fastening.
More than be to be illustrated, but example of the present invention is not limited only to the content shown in Fig. 1 ~ 4 with reference to Fig. 1 ~ 4 pair one embodiment of the present of invention.
In the embodiment shown in Fig. 1 ~ 4, though shown in Fig. 5 (a), at first, second head member 7,8 side places form the Baltimore groove 12 as the first restriction face, form the convex guide rail 11 that touches face as first at support component 9 side places, still, also can be shown in Fig. 5 (b), form convex guide rail 111 at first, second head member 7,8 side places, form the Baltimore groove 112 that touches face as first at support component 9 side places as the first restriction face.
In addition, though in the various embodiments described above, adopted the square-section as Baltimore groove and convex guide rail, also can be shown in Fig. 5 (c), with Baltimore groove 212 as dovetail groove, with convex guide rail 211 as dovetail.In this case, as the Baltimore groove 212 and the convex guide rail 211 of detent mechanism 10, also can play certain position limit effect on external width to the fore-and-aft direction position limit.In addition,, also can make Baltimore groove become T word groove, make convex guide rail become T word guide rail though do not mark among the figure.
In the embodiment shown in Fig. 1 ~ 5, touching face (convex guide rail and Baltimore groove) by the first restriction face and first limits the position of fore-and-aft direction, adopt two faces of such a subtend to limit the words of the position of the direction of intersecting therewith, not only can limit the position of fore-and-aft direction, be applicable to the position of Max. Clearance _M. direction too.For example, as shown in Figure 6, intersect, just can limit position with respect to the width of first, second head member 7,8 of support component 9 as long as the two sides of the two sides of convex guide rail and Baltimore groove are formed with width.In this case, width becomes first direction, and fore-and-aft direction becomes second direction.
Though in the embodiment shown in Fig. 1 ~ 6, first, second head member 7,8 and support component 9 be complicated variant and form, two head members are installed on the support component 9 removably by detent mechanism 10, because for detection faces (light projector face 4b to light-projecting portion 4 and light accepting part 5, sensitive surface 5b) state is confirmed and is cleaned, as long as a side head member is taken off from support component 9, so it is dismantled and assembled that a side head member is formed, the opposing party's head member forms with support component 9 and is integral.
In addition, adjusting about the width of slit 3, just about position adjustments with respect to the above-below direction (optical axis direction) of each head member of support component 9, as long as just can regulate to the width of slit 3 because either party's head member is changed at the enterprising line position of above-below direction, so the head member that also can be configured to make a side only can adjusting position on above-below direction with respect to support component 9, and the opposing party's head member is can not displacement ground on above-below direction with respect to support component 9 assembled.
Further, in the present invention, because the position adjustments of the above-below direction of each head member is not necessary, so it is can not displacement ground assembled also can be configured to make two head members to be on above-below direction with respect to support component 9.By the way, as can not displacement on above-below direction the assembled structure in ground, for example, with regard to the situation of the embodiment shown in Fig. 1 ~ 4, can not be made as elongated hole with being formed at installing hole 97 support component 9, that be used for fixing bolt 13a, as long as it is just passable to change circular hole into.
As for detent mechanism 10, be not limited to the structure of described embodiment, as long as it can limit with respect to the fore-and-aft direction of first, second head member 7,8 of support component 9 and the position of width, also can be other structures.For example, as shown in Figure 7, can be by adopting alignment pin 32 support component 9 and two head members to be assembled the restriction of the position of carrying out fore-and-aft direction, also can be that a plurality of pins that will be formed at the either party of support component 9 and two head members insert in corresponding with described pin, as the to be formed at other party hole, so that the restriction of the position of fore-and-aft direction is carried out in both assemblings, convex guide rail 11 and Baltimore groove 12 are set with replacement.
In these cases, by (location) pin and hole the position of the fore-and-aft direction of two head members is limited, fixed by fixed part 13 by two head members are fitted on the support component 9, formed the detent mechanism 10 of the position of the width that limits two head members with this.In addition, also can adopt a plurality of reamer bolts as substituting that sell described (location), with respect to support component 9 that two head members assemblings are fixing.
Claims (3)
1. weft detector (1) that is used for water jet loom, wherein, be arranged on the opposition side of line sending side and be formed with the probe (2) of the slit (3) of accepting to be accompanied by the parallel (20) that beating-up moves, have across described slit (3) and make optical axis (6) the consistent also light-projecting portion (4) and the light accepting part (5) of subtend, detection have or not parallel (20) from described optical axis (6) by judging the success or not of wefting insertion, it is characterized in that:
Described probe (2) possesses: at least one with first head member (7) of described light-projecting portion (4), second head member (8), the support component (9) that supports described first and second head members (7,8), described first and second head members of restriction (7,8) with described light accepting part (5) with respect to this support component (9) at detent mechanism (10) perpendicular to the position on the direction of described optical axis (6)
Described detent mechanism (10) comprising:
Described first and second head members (7,8) one of at least on, with two first restriction faces forming towards rightabout form mutually (7a, 8a), the described first restriction face forms across with respect to the first direction vertical with described optical axis (6);
Be formed at described support component (9) and (7a, two first that 8a) touch respectively touch face (94a) with this first restriction face
Be formed at and be formed with the described first restriction face (7a, on 8a) described first head member (7) and/or described second head member (8), with respect to perpendicular to described optical axis (6) and be different from the second restriction face that the second direction of first direction forms across (75a, 85a);
Be formed at described support component (9) and with this second restriction face (75a, what 85a) touch second touches face (94b);
Be used to keep the described second restriction face (75a, 85a) and second fixed part (13) that touches the state that touches of face (94b).
2. the weft detector (1) that is used for water jet loom according to claim 1, wherein, the described first restriction face (7a in the described detent mechanism (10), 8a) touch face (94a) and form parallel with described optical axis (6) in the longitudinal direction with described first, described first touches the size that face (94a) forms on the length direction is longer than the described first restriction face (7a, 8a) size in the longitudinal direction.
3. the weft detector (1) that is used for water jet loom according to claim 2, wherein, the described first restriction face (7a, 8a) and described first one of them that touches face (94a) be the two sides of the convex guide rail (11) that forms abreast with described optical axis (6)
The described first restriction face (7a is the two sides that form and embed the Baltimore groove (12) of described convex guide rail (11) with described optical axis (6) abreast with described first the opposing party who touches face (94a) 8a),
Described fixed part (13) is the parts that are fixed in one of at least any position on the described convex guide rail (11) of described first head member (7), described second head member (8) and the described support component (9) that will be formed with this Baltimore groove (12).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009214031A JP5530686B2 (en) | 2009-09-16 | 2009-09-16 | Weft detection device for water jet loom |
| JP2009-214031 | 2009-09-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102021723A true CN102021723A (en) | 2011-04-20 |
| CN102021723B CN102021723B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102737086A Active CN102021723B (en) | 2009-09-16 | 2010-09-03 | Weft detection device for water-jetting type weaving machine |
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| JP (1) | JP5530686B2 (en) |
| CN (1) | CN102021723B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201800006835A1 (en) * | 2018-06-29 | 2019-12-29 | OPTICAL DEVICE FOR DETECTION OF SHORT WEFT IN A TEXTILE FRAME | |
| JP7290983B2 (en) * | 2019-04-04 | 2023-06-14 | 津田駒工業株式会社 | Tuck-in head for pneumatic tuck-in equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4723770B2 (en) * | 2001-09-25 | 2011-07-13 | 津田駒工業株式会社 | Weft detection method and apparatus for loom |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2011063897A (en) | 2011-03-31 |
| CN102021723B (en) | 2013-12-04 |
| JP5530686B2 (en) | 2014-06-25 |
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