CN1323203C

CN1323203C - Weft contact part and weft detecting method

Info

Publication number: CN1323203C
Application number: CNB031083323A
Authority: CN
Inventors: 木滑敏博; 本乡真一
Original assignee: Hokuryo Denko Co Ltd; Tsudakoma Industrial Co Ltd
Current assignee: Tsudakoma Corp; Hokuryo Denko Co Ltd
Priority date: 2002-05-16
Filing date: 2003-03-25
Publication date: 2007-06-27
Anticipated expiration: 2023-03-25
Also published as: TWI220677B; JP2003336147A; KR100502848B1; CN1459524A; TW200307070A; JP3881278B2; KR20030089412A

Abstract

The present invention discloses a weft feeler, which has a slit allowing passage of weft accompanied by beating motion, especially a method capable of precisely detecting the weft. Within the weft feeler, which has guide parts extended within an area at least comprising a territory closer to an entrance of the weft than a light axle of a slit formed onto a feeler body along an extension direction of the slit, and disposed with space left in a weft entering direction overlapped towards the slit, a method of weft detection is characterized in that accompanied by the beating motion, the entered weft is detected by being passed through the slit while being engaged by the guides.

Description

Parallel touches part and parallel detection method

Technical field

The parallel that the present invention relates to have in the shuttleless loom as the jet room touches part and parallel detection method.

Background technology

Up to now, use laminal so-called cloth strip parallel (flat yarn also is a lenticular wire), when producing the weaving cotton cloth of cloth strip (base cloth), using the sword belt type loom more.But the sword belt type loom has its restriction on the productivity that raising is weaved cotton cloth.At present, Weft insertion nozzle or parallel have been touched picking member such as part and improved, weaved cotton cloth and can utilize water-jet loom to knit system cloth strip gradually.

Parallel as the parallel of detectable jet loom touches in the part, having a kind of parallel to touch part is will (beat up along with denting with the mode of press water to be detained the part picking, beating) slit (slit) that makes parallel be able to pass through, be located at and touch the part main body, and touch at this and to be formed with the optical axis of surveying the light that parallel uses in part main body, this light is able to towards upper and lower to by slit (special public clear 57-13653 number).

According to the prior art, when parallel passes through the slit, survey the light path of using light by the parallel that passes in the slit, make light produce the light quantity variation, and whether have or not parallel to pass through according to this light quantity change detection towards light-receiving module.

But, according to above-mentioned prior art, when the parallel of cloth strip is translucent parallel, this parallel will become the water white transparency shape once immersion, even its result will cause parallel by the slit, the light quantity (light income) that also can't obtain light-receiving module changes, and can't survey parallel.

In addition, aspect water jet looms, enter technical in the slit with injection water, touch part (for example, spy open flat 6-184880 number, spy open flat 10-168712 number) though proposed various parallels for avoiding making picking.No matter but above-mentioned which kind of prior art all reckons without the detection of cloth strip parallel.

Summary of the invention

Purpose of the present invention, be a kind of parallel of invention with slit touch part can make the parallel of following denting be able to by, particularly can survey the method for parallel really.

Parallel related to the present invention touches part, is to comprise: what have the slit touches the part main body, and this slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And parallel guiding device with guide surface, this guide surface be configured in this touch part main body side and in order to the guiding parallel, aforementioned guide surface, be the angle of passing through with the tolerable parallel, extend in the direction of intersecting near the position of above-below direction in aforementioned slit towards bearing of trend with aforementioned slit.

At this, " gap position near ", even be that the parallel that comprises by the slit contacts with the guide surface of guiding elements, this guide surface can not hinder the position of the above-below direction in the slit that parallel passes through yet.

Touch in the part at above-mentioned parallel, parallel is to be advanced by the guide surface guiding in by the way, slit, whereby with the change state, and the state of the parallel part in the change slit.Whereby, parallel is that the one side afterturn arranges the moisture that is trapped in simultaneously by inside, slit in the slit in, therefore compared with prior art, can the water in the slit in bigger the rocking of generation.

According to The above results, parallel of the present invention touches part, with previous now than, can in by the light in slit, occur really changing because of the tangible light quantity that rocking of water produces, and the light income signal that makes light-receiving module produces really and obvious variation, and surveyed parallel really.

Other parallel related to the present invention touches part, is to comprise: what have the slit touches the part main body, and this slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And parallel guiding device with guide surface, this guide surface is disposed at this side of touching the part main body, in order to the guiding parallel, one of them side of aforementioned slit and aforementioned guide surface, be in the above-below direction of aforementioned gap position, and on the end face that extends toward aforementioned slit bearing of trend, have towards upper and lower to a plurality of recesses that are absorbed in and towards upper and lower to outstanding a plurality of protuberances.

Touch in the part at other parallel, parallel is by in the way in slit, advance along the recess or the protuberance of guide surface, and in the vibrative inside, slit of passing through simultaneously.Whereby, with past, can in the water of inside, slit, produce bigger rocking.

According to The above results, other parallel touches part, and to touch part identical with initial parallel, touch part than parallel in the past, can change by producing tangible light quantity in the light in slit really, and the light income signal of light-receiving module is produced really and obvious variation, and surveyed parallel really.

Aforementioned guide surface can pass the height and position zone corresponding with aforementioned slit toward the opposing party's side by either party's side of above-below direction, or also configurable in the more approaching aforementioned parallel entrance side part of more aforementioned at least optical axis.

Aforementioned parallel guiding device is can corresponding aforementioned guide surface and be formed with in order to parallel is given as security the subsidy guide surface into aforementioned guide surface separating with the aforementioned opposition side that touches the part main body.Thus, parallel is moved along guide surface really, and cause the obvious change of rocking of water big.

Aforementioned guide surface also can corresponding aforementionedly touch the part main body and be formed at the guiding elements that is configured in picking direction upstream side.Thus, guiding elements can be brought into play the effect as the splash guard that touches the part main body, and therefore need not make a special trip to a certain place is provided with the waterproof member individually, and is able to simplified construction.

Other parallel of related to the present invention another touches part, is to comprise: what have the slit touches the part main body, and this slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And toward upper and lower to the many wire rods with bendability characteristics of the position of the above-below direction that extends aforementioned slit, aforementioned wire rod is to be configured in aforementioned slit, and is configured in the aforementioned at least one side who touches the member of part main body side.

Touch in the part at another other parallel, parallel, meeting fasten mutually with wire rod in by the way in slit and pass through inside, slit, and changes state by the bendability characteristics of wire rod, and changes the state of the parallel part in the slit.Whereby, with past, with bigger the rocking of water generates that makes in the slit.

According to The above results, another other parallel touches part, to touch part identical with above-mentioned 2 kinds of parallels, touch part than parallel in the past, the tangible light quantity that meeting produces in by the light in slit due to the rocking of water really changes, and the light income signal that makes light-receiving module produces really and obvious variation, and surveyed parallel really.

In addition, another other parallel touches part, still includes the parallel guiding device with guide surface, and this guide surface is to be configured in the aforementioned part main body side of touching in order to the guiding parallel, and aforementioned wire rod also can be formed on the aforementioned guide surface.

Parallel detection method related to the present invention is to include: what have the slit touches the part main body, and this slit is a kind ofly to be detained moisture and parallel is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And parallel guiding device with guide portion, this guide portion is a pair of guide portion that extends to the regional extent that comprises the more approaching aforementioned parallel entrance side of more aforementioned optical axis at least toward the bearing of trend in aforementioned slit, be in the mode overlapping with aforementioned slit, separate towards the picking direction and to be configured in aforementioned side of touching the part main body, this parallel detection method includes: make input cloth strip parallel, under the state that is fastened on aforementioned guide portion along with denting by aforementioned slit between step to survey.

At the parallel detection method, parallel is to form crooked than optical axis near parallel entrance side place contacts with two guide portion and passing through the slit.Whereby, because of parallel produces vibration, and the water generates that is trapped in the slit is rocked, and also change by the light quantity in slit.Its result causes, and the light income signal of light-receiving module produces obvious and certain variation, and is surveyed parallel really.

At least one side at the interval of the lap of the above-below direction of aforementioned two guide portion and aforementioned two direct internal, the scope that can produce vibration in the time of also can being set in parallel and parallel is passed through by aforementioned slit.Thus, because of the parallel vibration becomes big, cause rocking of water also to become big thereupon, and be able to more certain detection parallel.

Aforementioned parallel can according to when this parallel by when survey by the light income signal that aforementioned vibration produced.

Aforementioned two guide portion can the corresponding aforementioned part main body of touching be formed on the guiding elements that is configured in picking direction upstream side.Thus, guiding elements can be brought into play the effect as the splash guard that touches the part main body, and therefore need not make a special trip to a certain place is provided with the waterproof member individually, and is able to simplified construction.

Description of drawings

Fig. 1 possesses the side view of an embodiment who wants portion that parallel related to the present invention touches the loom of part;

Fig. 2 (A), Fig. 2 (B) are the icons that is touched part by the employed parallel of loom of picking direction observation Fig. 1;

Fig. 3 is the calcspar of an embodiment of the parallel electrical circuit that touches part;

Fig. 4 is the oscillogram by the electrical signal that experiment obtained that uses a guiding device;

Fig. 5 is the oscillogram by the electrical signal that experiment obtained that uses other guiding device;

Fig. 6 is the oscillogram by the electrical signal that experiment obtained that uses another guiding device;

Fig. 7 is the 2nd enforcement illustration that parallel touches part;

Fig. 8 is that the parallel of Fig. 7 touches the parallel state change map in the part, (A) is the state D point that be positioned at Fig. 7 on for the state on the B point that is positioned at Fig. 7, (C) for the state on the C point that is positioned at Fig. 7, (D) for the state on the A point that is positioned at Fig. 7, (B);

Fig. 9 is the 3rd enforcement illustration that parallel touches part;

Figure 10 is the 4th enforcement illustration that parallel touches part;

Figure 11 is the 5th enforcement illustration that parallel touches part;

Figure 12 is the 6th enforcement illustration that parallel touches part;

Figure 13 is the 7th enforcement illustration that parallel touches part;

Figure 14 is the 8th enforcement illustration that parallel touches part, (A) is for one of recess is implemented illustration, (C) is other enforcement illustration of recess by the viewed figure of the moving direction of parallel, (B);

Figure 15 (A), Figure 15 (B) are the 9th enforcement illustrations that parallel touches part;

Figure 16 (A), Figure 16 (B) are the 10th enforcement illustrations that parallel touches part.

The specific embodiment

With reference to Fig. 1, parallel touches part 10, is to use the lenticular wire of cloth strip is being used as parallel 12 and warp 14, and also promptly weaves cotton cloth on 16 the water-jet loom in order to the base cloth of knitting system cloth strip (band shape).Also can use with lenticular wire only on the loom as parallel 12 usefulness.

Parallel 12, the press water of using with picking is spouting in the Weft insertion nozzle by no icon simultaneously, and in the opening of warp 14 that with the thickness direction is above-below direction, parallel is squeezed into the place of just having knitted by reed 18 in picking under the state that with the thickness direction is above-below direction, weave cotton cloth 16 to be woven to.

It is to comprise that parallel touches part 10: on the border of base portion and leading section crooked and form the L font during by viewed in plan touch part main body 20; And separate and be assembled in the leading section that touches part main body 20 towards the picking direction by touching part main body 20, a pair of guiding

elements

22,24 that uses as the guiding device of parallel 12.More specifically, touching part main body 20, than knitting end in anti-picking side, is to have search coverage in the picking side, and is arranged to always clamp from upper and lower by the upper and

lower member

34,36 of knitting the distolateral extension of end and weaves cotton cloth.

Parallel touches part 10, becomes upstream side in the picking direction for making guiding

elements

22,24 correspondences touch part main body 20, and is assembled on the temple bar 28 in the mode that can adjust picking direction and above-below direction position by installation component 26 at the base portion that touches part main body 20.

As shown in Figure 2, touch part main body 20, make along with denting the slit 30 that parallel 12 passes through, also have and allow by slit 30 and finish the open space 32 that the parallel 12 of denting is awaited orders except having at leading section.

Slit 30 is the detection path uses as parallel 12, has than open space 32 to be little certain width, and to omit moving direction 58 extensions of parallel mode towards parallel 12.The width in slit 30 (size of above-below direction) is to be set at the part water droplet that is sprayed can enter slit 30 along touching part main body 20 surfaces, and water can often be trapped in the value in the slit 30, for example can be set at several mm.

Open space 32 is to be extended toward leading section by base portion, and is connected with slit 30.Touch its leading section at least of part main body 20, be by the slit 30 and open space 32 be divided into the last

lower member

34,36 that tolerable parallel 12 passes through.

In other words, go up the

member

34 and 36 under reaching, be respectively to guide parallel 12 by the lower surface of the past member 34 of the leading section of

member

34 and 36 and 36 and the mode of upper end guiding, form the guide surface that extends toward the parallel approach axis at leading section, in addition, again by making with certain interval in the lower surface and upper end of

member

34 and 36, connect the 1st zone inducing face towards upper and lower to separately and be and extend in parallel and form slit 30, also by making the 2nd zone that connects the 1st zone, further form open space 32 to the mode of separating and extend in parallel simultaneously toward upper and lower than the 1st zone.

Touch part main body 20, possessing has: will not have the parallel that the light projector assembly of icon produced and survey the optical fiber 38 that guides to slit 30 with light; And reception also guides to this light the optical fiber 40 of the light-receiving module of no icon by the light in slit 30.Whereby, can in slit 30, form the light path and the optical axis thereof of the light that passes through slit 30.

In the icon example, the optical fiber 38 that connects the light projector assembly is configured on the upper member 34, and the optical fiber 40 that will connect light-receiving module is configured on the lower member 36, but the position of two optical fiber concerns and also can turn one's coat up and down, and optical fiber 38 is configured in lower member 36, optical fiber 40 is configured on the upper member 34.

In order to cover slit 30 simultaneously in the picking side, and be formed at anti-picking side (touching part main body 20 sides) in order to make guiding elements 24 corresponding guiding elements 22, and respectively by distance piece shown in Figure 1 42 and 44 and be not shown in screw component among the figure, towards picking direction (in Fig. 2 (A), being the direction vertical with paper) and with the distance of interval D 2 guiding

elements

22 and 24 is assembled in and touches on the part main body 20.

The upper area of the leading section of the lower end area of the leading section of guiding elements 22 and guiding elements 24 is to be positioned at identical height and position with the height and position in the slit 30 of above-below direction, and only overlapping with lap D1 and slit 30.Whereby, the upper area of the leading section of the lower end area of the leading section of guiding elements 22 and guiding elements 24, can bring into play the effect of guide portion respectively as guiding parallel 12, and two guide portion following and above be respectively as the guide surface 46 that extends in parallel with

slit

30 and 48 and play a role.

In order to receive the parallel mobile 12 and it to be guided to pairing guiding

elements

22 and 24 and

member

34 and 36 along with denting, except with guiding

elements

22 and 24 and the front end face of

member

34 and 36 be to form respectively the guide surface of arcuation, and the common respectively

parallel inlet

50 and 52 that forms.

Guiding elements

22,24, common formation and the open space 54 that touches the open space 32 tool same meanings of part main body 20.Open space 54 is to be communicated with the slit of 46,48 of the guide surfaces of guiding

elements

22,24.

During picking, parallel 12 and press water are common spouting in the Weft insertion nozzle of icon not.At this moment, guiding elements the 22, the 24th uses as the splash guard that touches part main body 20.Therefore can stop press water directly to enter among the slit 30, and need not make a special trip to a certain place each member that waterproof is used is set separately, and be simplified the structure that parallel touches part.

The parallel 12 that drops into warp 14 openings is when carrying out denting, and parallel 12 along with denting, can move towards this arrow direction at the height and position of arrow shown in Figure 2.Whereby, parallel 12, earlier can with the arcuation guide surface butt of the front end of the guiding elements 24 of guiding device, just induce the face butt then with the arcuation of the front end of guiding elements 22.Whereby, parallel 12 can enter between the guiding

elements

22,24 and receive inlet 50 from parallel via the guiding of two arcuation guide surfaces.

Then, parallel 12 with the anterior sagittal guide surface butt of the

member

34,36 that touches part main body 20, again via the guiding of two arcuation guide surfaces, and receives the slit 30 that inlet 52 flows between the

member

34,36 from parallel.

Then, parallel 12 moves between guiding

elements

22,24 and in the slit, and moves to open

space

32,54 at last.When parallel is mobile in slit 30, can cover light by slit 30.The light income of light-receiving module is changed, and the light income signal is changed.But when parallel was translucent lenticular wire, this kind parallel because of after picking soaks, can form the water white transparency state, even its result will cause parallel by slit (light path), also can't obtain the variation of light income.

Parallel 12 is overlapping because of the guide portion that forms guide

surface

46,48, therefore when parallel is displaced between the guiding

elements

22,24, general shown in Fig. 2 (A), (B), can be when the guide surface 46 of guiding elements 22 be given as security the guide surface 48 of pressing guiding elements 24, surveying than parallel with the optical axis of light more near parallel 50 sides that enter the mouth, contact with two

guide surfaces

46,48, and be bending and by slit 30.

In other words, parallel 12 forms bending gradually by denting campaign contact two

guide surfaces

46,48, in other words is simultaneously to turn round to smooth out with the fingers one side by two guide surfaces 46,48.Whereby, partly produce bigger vibration, and this vibration also conducts to the parallel part by 30 inside, slit, so make parallel 12 produce bigger vibration at parallel by two guide surfaces 46,48.Its result causes, and is trapped in big the rocking of water generates in the slit 30, and makes the light quantity by slit 30 that significant change also be arranged.Its result causes, and the light income signal of light-receiving module produces obvious and certain variation, and is surveyed parallel 12 really.

The lap D1 of the guide portion of guiding

elements

22,24 and interval D 2 are generation situations that the actual light income signal of light-receiving module is observed on the limit, and the value that work as on suitable limit are set on the limit.Lap D1 and interval D 2 can be set at for example lap D1=0.7mm to 3mm, interval D 2=0.7mm to 2mm according to the kind (particularly width) of parallel 12.

If increase lap D1, or when dwindling interval D 2, will make parallel pass through slit 30, particularly by than optical axis during more near parallel entrance side regional, the vibrations that strengthen parallel.Do not hinder in the scope that parallel passes through but preferably lap D1 and interval D 2 are set in.Particularly, at least one side of lap D1 and interval D 2 can produce vibration and can make in the scope that parallel passes through when preferably being set in parallel by slit 30.

Touch the interval of part main body 20 and guiding elements 24, preferably be set between the two not can occluded water value, be good for example with the value that is set in 2mm to 5mm degree.

With reference to Fig. 3, parallel touches part 10, also includes: as the light projector 60 of light source; Reception is by the light-receiving device 62 of light projector 60 by the light in slit 30; Detection signal in order to amplification light-receiving device 62 also is the ac amplifier circuit 64 of light income signal; Set parallel and survey the threshold setting device 66 that is worth with threshold (critical); Utilize the output signal of amplifier 64 and threshold value to judge the judging circuit that has or not 68 of parallel.

The light that light projector 60 makes parallel survey usefulness points to the optical fiber 38 of Fig. 2, the light that light-receiving device 62 receives from optical fiber 40, and produce the electrical signal (in other words, light income signal) of corresponding light income.

Ac amplifier circuit 64, in example shown in Figure 3, be that coupling capacitor 70 and resistor 72 are connected in series between the minus side input of the output of light-receiving device 62 and operational amplifier 74, be connected in operational amplifier 74 in parallel and will feedback the variable resistance 76 of usefulness, the positive side input of operational amplifier 74 is connected with ground.

In other words, ac amplifier circuit 64, be to constitute inverting amplifier, the detection signal that light-receiving device 62 is exported passes through coupling capacitor 70, and its alternating component is input to operational amplifier 74, after the amplification degree that the signal of alternating component is determined according to variable resistance 76 in operational amplifier 74 is carried out phase determination, the signal of output phase reversing again.

Judging circuit 68, when being the time signal during input has predetermined detection, whether the position standard of judging the light income signal of this moment surpasses the threshold value that threshold setting device 66 sets, when surpassing threshold value is will the silk thread signal be arranged, and is to export no silk thread signal logic to terminal 80 respectively when surpassing threshold value.No silk thread signal can use as the abnormal signal that loom is stopped.

Line is surveyed the time signal of usefulness, be by: utilize closely to connect inductor 86 and detect and be installed on loom main shaft 82, and the dog 84 that can rotate simultaneously with this main shaft 82 and producing.As this kind time signal, can use the anglec of rotation with main shaft 82 be 315 the degree to 345 the degree detections during signal.

That uses shape shown in Figure 2 touches part main body 20 and guiding

elements

22,24, when the lap D1 of

change guiding elements

22,24 and interval D 2, is as Fig. 4 and shown in Figure 5 by the signal waveform of oscillograph gained.

Condition determination

(1) parallel is set at the polyethylene film of thick 0.02mm and wide 4.2mm.

(2) rotation number with loom is set at 600rpm.

What (3) touch part main body 20 and guiding elements 24 is to be set at 3mm at interval.

(4) interval D 2 of guiding

elements

22,24 is to be set at 1mm.

(5) to survey with time signal FT be that the output point A of the detection inductor 86 in Fig. 3 detects to line.No matter be any situation of Fig. 4 or Fig. 5, all have the anglec of rotation and be during 315 ° to 345 ° the detection.

(6) line signal FSIG is to detect in the output point B of the AC amplifier 64 of Fig. 3.

With regard to the lap D1 aspect of guiding

elements

22,24, waveform shown in Figure 4 is 0.5mm, and waveform shown in Figure 5 is 2mm.

Usefulness as a reference, the signal waveform that is occurred when in Fig. 6, showing general parallel picking.In this example, except using the parallel of nylon 50d, and outside the rotation number rotation loom with 650rpm, all the other conditions during all with waveform shown in Figure 4 are identical.

Can know by the waveform of Fig. 4 and to learn, when the lap D1 of guiding

elements

22,24 is very few, translucent parallel one is subjected to water-soaked, to further present the water white transparency state, even between the slit and the guiding elements of guiding device of parallel by touching the part main body, cause the line signal that changed by the light signal because of the parallel vibration in the time of also can't obtaining by the slit.

Relatively, in Fig. 5 example, when parallel passes through between the guiding elements of guiding device, be subjected to the light signal to produce significant change, can obtain bigger line signal really whereby because of the parallel vibration makes.

In addition, learn that the general parallel that is easier to survey even its lap D1 is identical with example shown in Figure 4, is changed obviously by the light signal, therefore is to produce the once accurate bigger line signal in position by knowing in the example shown in Figure 6.The generation period of this line signal, roughly with parallel by denting and identical by the period of the optical axis in the slit.

Relative, in example shown in Figure 5, by increasing lap D1, though its standard example more shown in Figure 6 is low, can be between longer-term in generation line signal.Therefore, the parallel of the wide cut of relevant 4.2mm is surveyed, and can carry out really by example shown in Figure 5.

In frequently the luminous observation parallel of observer pass through state the time, by can confirming in the example shown in Figure 5, the guide surface that passes through guiding

elements

22,24 46,48 o'clock, parallel was to pass through with the state towards the broadside bending.Therefore, according to the example of Fig. 5, the vibration meeting of parallel is producing than under the shakedown, produces the line signal in whereby can be between longer-term.

On the other hand, also can confirm when the width of parallel diminishes, the position standard of line signal also can diminish.For confirm former thereby with above-mentioned equally in frequently the luminous observation parallel of observer pass through state the time, can confirm the less parallel of width, be the

guide surface

46,48 that under unbent state, passes through guiding

elements

22,24.

Then, even at the less parallel of width, also the embodiment at parallel guiding device of the

guide surface

46,48 by guiding

elements

22,24 under the state of broadside bending describes.

With reference to Fig. 7, the lower end area of the leading section of the guiding elements 92 of guiding device, with the upper area of the leading section of guiding elements 94, be with above-below direction in the identical height and position of height and position in slit 30, only be overlapped in slit 30 with lap D1.Whereby, the lower end area of the leading section of guiding elements 22, with the upper area of the leading section of guiding elements 24 are guide portion effects as guiding parallel 12, two guide portion following and above then respectively as

guide surface

96 and 98 and play a role.

The guide surface 96 of guiding elements 92 is the all-moving surface of corresponding parallel 12 or slit 30 and tilt to oblique below towards open space 54 by parallel inlet 50, and becomes the angular guide surfaces of passing the zone corresponding with the height and position in slit 30 in the inclination mode.And the guide surface 98 of guiding elements 94 is the all-moving surface of corresponding parallel 12 or slit 30 and tilt to oblique upper towards open space 54 by parallel inlet 50, and becomes the angular guide surfaces of passing the zone corresponding with the height and position in slit 30 in the inclination mode.No matter be which angular guide surfaces, when observing by horizontal direction, all be with the inclination mode pass the slit and towards upper and lower to extension.

During denting, parallel 12 is along with the height and position of denting in arrow moves toward this arrow direction.Whereby, parallel 12 earlier with the arcuation guide surface butt of the guiding elements 94 of guiding device, again with the arcuation guide surface butt of guiding elements 92.Whereby, parallel 12 is that the arcuation guide surface by guiding

elements

92,94 guides, and enters between the guiding

elements

92,94 and receive inlet 50 by parallel.

Then, parallel 12 with the anterior sagittal face butt of the guiding

elements

94,96 that touches part main body 20, by the guiding of this arcuation guide surface, slowly forms bending and receives inlet 52 slits 30 that enter between the guiding

elements

94,96 by parallel.

Then, parallel 12 between guiding

elements

92,94 and slit 30 is inner moves, moves to open

space

32,54 at last again.During this period, parallel 12 is advanced towards the denting direction with the guide surface 96 of guiding elements 92 and the guide surface 98 both sides' butts and the limit formation curved edges of guiding elements 94.

In other words, guiding elements 92, be corresponding guiding elements 94 and to be spaced apart at the opposition side that touches part main body 20 also be the side of picking side, the guide surface 96 of guiding elements 92 is to use as the subsidy guide surface, in order to parallel 12 is given as security the guide surface 98 of the guiding elements 94 of going into to be located to touch the part side.

Parallel 12 when mobile, can cover the light by slit 30 in slit 30.Whereby, the light income of light-receiving module is changed, and because of the light income signal change so, and whether be able to according to the existence of the change detection parallel 12 of light income signal.

Because parallel 12 is to be given as security to press by the

guide surface

96,98 of inclination to form bending gradually, and moves between guiding

elements

92,94, therefore needs only change state in moving the way, the state of the parallel part in the slit 30 also can change thereupon.Whereby, because parallel is to navigate on 30 inside, slit to arrange the mode that is stranded in the water in the slit 30, so, can in the water in the slit 30, produce bigger rocking on the contrary than in prior art.

Fig. 8 shows parallel 12 state when mobile in guiding

elements

92,94.

Parallel 12, be earlier with the height and position shown in the arrow and guiding elements 94 butts and by this guide surface 98 up push away and with butt above the slit 30, and then below pushing to guiding elements 92 butts and by this guide surface 96 and form bending.

Then, parallel 12 by the overlap action of

guide surface

96,98, when moving to the 8A point of Fig. 7, shown in Fig. 8 (A), further forms bending.

Then, when parallel 12, when moving to the 8B point of Fig. 7, shown in Fig. 8 (B), parallel can be by the action that further up pushes away of guiding elements 94, significantly bending, and further for the line side.

Then, when parallel 12, when moving to the 8C point of Fig. 7 of optical axis 56 positions, shown in Fig. 8 (C), parallel is to bend to inverted status.

Then, when parallel 12, when moving to the 8D point of Fig. 7, shown in Fig. 8 (D), parallel is the action that a subordinate pushes away of advancing by guiding

elements

92, and 30 height and position presses to the below from the slit, and contacts with the following of slit 30.

As above-mentioned, if use: have the angle of passing through with tolerable parallel 12, and towards the slit 30 bearing of trend and extend near the guiding

elements

92,94 o'clock of angular guide surfaces 96,98 of position in the slit 30 of above-below direction with direction that above-below direction intersects, because of parallel 12 can be displaced between the guiding

elements

92,94 by the change state, so also can change the state of the parallel part in the slit 30.

Whereby, parallel 12 can be along with denting campaign one side change state, and one side arranges the water that is stranded in slit 30 and navigates in the slit 30, therefore, than in the past, can produce bigger rocking on the contrary in the water in the slit 30.Its result causes, and than in the past, the light by slit 30 can change because of rocking of water produce tangible light quantity, and then makes the light income signal of light-receiving module produce obvious and certain variation, and is surveyed parallel really.

As shown in Figure 7, be preferably in and have its height and position and be in the guiding elements 92 of guide surface 96 (counter touch part main body 20 sides) of below, form by guide surface 96 and be the outstanding protuberance 100 of arcuation towards the below.Protuberance 100, be formed at slit 30 in the corresponding part in optical axis 56 positions.

This kind protuberance 100 also can form: in the guiding elements 94 with the guide surface 98 of height and position above being in (touching part main body side 20), be the outstanding protuberance 100 of arcuation towards the below by guide surface 98.

When this kind protuberance 100 is formed at guide surface 96 (or 98), at the C of Fig. 7 point, (shown in Fig. 8 (C) general) parallel 12 is the boundary vicinity butts at guide surface 96 and protuberance 100, and is a fulcrum and inverted status is simultaneously crossed protuberance 100 with this abutment.Whereby, because of parallel 12 can produce significantly crookedly, produce bigger rocking and make in the water in the slit 30, and make the light income signal produce obvious and certain variation, and surveyed parallel really.

Except making

guide surface

96,98 more the inclined position of below, also can make the more inclined position of top of

guide surface

96,98 as shown in Figure 9 toward moving direction the place ahead (open space 54 sides) of parallels 12 toward moving direction the place ahead of parallel 12.

Guiding elements the 22, the 24th shown in Figure 2, as shown in figure 10, guiding

elements

92,94 shown in Figure 7 then as shown in figure 11, recess more than 1 102 can be formed at the

guide surface

48,98 of the guiding

elements

24,94 that touches part main body 20 sides, or replace this kind recess 102 and the recess more than 1 102 is formed at the

anti-guide surface

46,96 that touches the guiding

elements

22,92 of part main body 20 sides.

In other words, the recess 102 of the guiding elements 24 of Figure 10 can form the angle of passing through with the tolerable parallel, and towards the slit 30 bearing of trend and extend near the guide surface of the gap position of above-below direction with the direction that above-below direction intersects.By the recess 102 formed guide surfaces of the guiding elements among Figure 11 94, also can form guide surface as hereinbefore in addition.

If be described in further detail precedent, then be the guide surface 46 and the formed guide surface of protuberance of the guiding elements 22 of Figure 10, can bring into play function as the subsidy guide surface of the aforementioned guide surface that parallel 12 is urged to guiding elements 22.

Replace above-mentioned recess 100, general as described above, also the protuberance more than 1 100 can be formed at the

guide surface

48,98 of the guiding

elements

24,94 that touches part main body 20 sides, maybe this kind protuberance 100 be formed at the

anti-guide surface

46,96 that touches the guiding

elements

22,92 of part main body 20 sides.

In addition, as Figure 10 and shown in Figure 11, also protuberance 100 and recess 102 can be formed at the

guide surface

46,96 of the

anti-guiding elements

22,92 that touches part main body 20 sides and the

guide surface

48,98 that touches guiding

elements

24,94 sides of part main body 20 sides respectively, or, protuberance 100 and recess 102 are formed at

guide surface

48,98 and 46,96 respectively also can with on the contrary aforementioned.Under this kind situation, can prevent the reduction or the increase of the tension force that parallel is produced by protuberance 100 and recess 102 time.

Raised part 100 and recess 102 should be formed at least and comprise the position that more receives the scope of inlet 50 sides than optical axis 56 near parallel, especially to be formed near optical axis 56 persons for good.Thus, the rocking of water that parallel 12 was produced by time in the slit 30 can conduct to optical axis really along with parallel moves, and therefore can make the light income signal more really obviously, and be surveyed parallel really.

By forming protuberance 100 or recess 102 at guide surface, because of making 12 one-tenths bendings by a larger margin of parallel, and in the water in slit 30, produce bigger rocking, thus make the certain and obvious variation of light income signal generation, and surveyed parallel really.

Above-mentioned recess 100 and recess 102 not necessarily will be made as the semicircle as the icon example, also can do the suitable shape that tolerable parallels such as engrail, wavy, triangular shape, trapezoidal shape pass through.

As shown in figure 12, the angle of inclination of

guide surface

96,98 can be set at different value, or a side guide surface 98 (or 96) is not tilted, and make the lap of guiding

elements

92,94 be become greater to degree near the parallel moving direction front side shown in the arrow 58.

General as shown in figure 13, slit 30 can be tilted, make its height and position be increased to the degree of open space 54 sides, and optical axis 56 is tilted.In the present embodiment, with respect to the anti-guide surface 46 that touches the guiding elements 22 of part main body 20 sides, be the mode of extending to cross slit 30, extend towards horizontal direction, and touch the guide surface 48 of the guiding elements 24 of part main body 20 sides, then be to become many modes with lap toward open space 54 sides to tilt.

But, the guide surface 48 of the guiding elements 24 that touches part main body 20 sides is extended towards horizontal direction, and make the anti-guide surface 46 that touches the guiding elements 22 of part main body 20 sides, become many modes with past open space 54 sides of the lap of guiding

elements

22,24 and tilt.In addition,, also slit 30 itself can be tilted, make height and position, and optical axis 56 is tilted toward open space 54 side step-downs with respect to aforementioned.

Figure 14, be that guiding elements 24 is disposed at the illustrative examples of touching the more approaching anti-picking side part of part main body 20, be that recess 110 with majority separately is formed at a side guiding elements 24 (or 22) towards the moving direction of parallel, and the concavo-convex moving direction towards parallel of majority separately be formed at a side guiding elements 24 (or 22).

Each recess 110 can generally form semi-circular shape shown in Figure 14 (B), or forms zigzag shown in Figure 14 (C), or also can form other shape.In the embodiment shown in fig. 14, embodiment is general as described above, touches part main body 20 more near the position of picking side as if guiding elements 24 is configured in, and then guiding elements 24, can effectively obtain the waterproof function in corresponding slit 30.

Also can replace recess 110, the protuberance of majority separately is formed at a side guiding elements 24 (or 22) towards the moving direction of parallel, and the concavo-convex moving direction towards parallel of majority separately is formed at a side guiding elements 24 (or 22).

In addition, also can be with the recess or the protuberance of majority, be arranged on the lower surface or the upper end in the formation slit 30 of the upper member 34 that touches part main body 20 or lower member 36.In embodiment so, there are 24 of the guiding elements of the subsidy guide surface that parallel 12 can be given as security really the recess that be depressed into aforementioned majority or protuberance even more ideal if add to possess.

As above-mentioned, under the situation of the guiding elements that the recess (or protuberance) of majority separately is formed at a side towards the moving direction of parallel, parallel can be by in the way in slit, recess or protuberance along guide surface are advanced, to produce vibration and to pass through inside, slit.Whereby, with past, can make bigger the rocking of water generates of inside, slit.Its result causes, and with past, can make the light income signal of light-receiving module produce obvious and certain variation simultaneously, and be surveyed parallel really changing by producing bigger light quantity in the light in slit really.

With reference to Figure 15, in the present embodiment, except line is surveyed with the light path of light, it is rough lumber 112 with the majority of wire rod system, be configured to brush shape, make it to be able to touch in the top and bottom in slit 30 of part main body 20 in formation, be separated from each other and towards upper and lower to the bearing of trend that extends slit 30, and make the height and position of above-below direction overlapping.Rough lumber 112 is not can though can produce bending when using with the parallel butt, but can cause the material of damage to parallel.Nylon wire for example.

Replace rough lumber 112 is disposed at and touch among the part main body 20, also can be as shown in figure 16, rough lumber 112 is installed in the retaining member 114 that is assembled in the member 34 that touches part main body 20 below, or the guiding elements among aforesaid each embodiment 22,24 (or 92,94) is disposed at the side of touching part main body 20, and be installed on the guide surface 46 (or 96).

When using this kind rough lumber 112, parallel can touch mutually with the rough lumber of brushing 112 on the way by slit 30 and pass through 30 inside, slit, and change state by the bendability characteristics of rough lumber 112, also can change the parallel state partly in the slit 30.Whereby, than in look-ahead technique, can produce bigger rocking in the water in the slit 30.Its result than in look-ahead technique, can occur really changing because of the tangible light quantity that rocking of water produces in by the light in slit 30, and the light income signal of light-receiving module is produced really and obvious variation, and be surveyed parallel really.

The present invention is not limited to the foregoing description, as long as in not exceeding the scope of purport, all can change arbitrarily.

The element numbers explanation:

10 parallels touch part

12 parallels

14 warps

16 weave cotton cloth

20 touch the part main body

22, the guiding elements of 24,92,94 guiding devices

30 slits

32,54 open spaces

34, the guiding elements of 36 tactile part main bodys

38,40 optical fiber

46,48,96,98 guide surfaces

50,52 parallels receive entrance

56 optical axises

The moving direction of 58 parallels

100 protuberances

102,110 recesses

The rough lumber of 112 wire rod systems

114 retaining members

Claims

1. a parallel touches part, it is characterized in that, comprising: what have the slit touches the part main body, and described slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And have guiding and the parallel guiding device, described guide surface is to be configured in described side of touching the part main body, in order to the guiding parallel,

Aforementioned guide surface is the angle of passing through with the tolerable parallel, the direction of intersecting towards bearing of trend with aforementioned slit extend aforementioned slit above-below direction the position near.

2. parallel as claimed in claim 1 touches part, it is characterized in that aforementioned guide surface is the height and position zone of being crossed over corresponding aforementioned slit by the either side of above-below direction towards opposite side.

3. parallel as claimed in claim 1 touches part, it is characterized in that aforementioned guide surface is configured in the more approaching aforementioned parallel entrance side part of more aforementioned optical axis at least.

4. touch part as each the described parallel in the claim 1 to 3, it is characterized in that, aforementioned parallel guiding device is a corresponding aforementioned guide surface and having in order to parallel is given as security the subsidy guide surface on the aforementioned guide surface possessing with aforementioned side of touching the opposition side of part main body.

5. parallel as claimed in claim 1 touches part, it is characterized in that, aforementioned guide surface is corresponding aforementionedly touch part and be formed on the guiding elements that is configured in picking direction upstream side.

6. a parallel touches part, it is characterized in that, be to comprise: what have the slit touches the part main body, and described slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And the parallel guiding device with guide surface, described guide surface is to be configured in described side of touching the part main body, in order to the guiding parallel,

One of them side of aforementioned slit and aforementioned guide surface, be to be positioned among the aforementioned gap position of above-below direction, and on the end face that extends toward aforementioned slit bearing of trend, have towards upper and lower to a plurality of recesses that are absorbed in and towards upper and lower to outstanding a plurality of protuberances.

7. parallel as claimed in claim 6 touches part, it is characterized in that aforementioned guide surface is the height and position zone of being crossed over corresponding aforementioned slit by the either side of above-below direction towards opposite side.

8. parallel as claimed in claim 6 touches part, it is characterized in that aforementioned guide surface is configured in the more approaching aforementioned parallel entrance side part of more aforementioned optical axis at least.

9. touch part as each the described parallel in the claim 6 to 8, it is characterized in that, aforementioned parallel guiding device is a corresponding aforementioned guide surface and having in order to parallel is given as security the subsidy guide surface on the aforementioned guide surface possessing with aforementioned side of touching the opposition side of part main body.

10. parallel as claimed in claim 6 touches part, it is characterized in that, aforementioned guide surface is corresponding aforementionedly touch part and be formed on the guiding elements that is configured in picking direction upstream side.

11. a parallel touches part, it is characterized in that, be to comprise: what have the slit touches the part main body, and described slit is that a kind of parallel that makes is surveyed with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And towards the many piece wire rods with bendability characteristics of upper and lower to the position of the above-below direction that extends aforementioned slit,

Aforementioned wire rod is arranged on aforementioned slit, and is configured in the aforementioned at least one side who touches the member of part main body side.

12. parallel detection method, it is characterized in that, be to touch part by parallel to carry out the method that parallel is surveyed, it is to comprise that described parallel touches part: what have the slit touches the part main body, described slit is that a kind of moisture that is detained also can make parallel survey with the slit of light by above-below direction, and at one end is provided with the parallel inlet; And parallel guiding device with guide portion, described guide portion is that the bearing of trend in past aforementioned slit extends to a pair of guide portion in the scope that comprises the more approaching aforementioned parallel entrance side of more aforementioned optical axis zone at least, by the mode overlapping with aforementioned slit, separate towards the picking direction and to be configured in aforementioned side of touching the part main body, described parallel detection method comprises: make input cloth strip parallel under the state that is fastened on aforementioned guide portion along with denting by aforementioned slit between step to survey.

13. parallel detection method as claimed in claim 12, it is characterized in that, the either party at the interval of the lap of the above-below direction of aforementioned two guide portion and aforementioned two guide portion can produce when being set in parallel by aforementioned slit in vibration and the scope passed through of tolerable parallel.

14. parallel detection method as claimed in claim 12 is characterized in that, aforementioned parallel, according to described when parallel by the time the light income signal that aforementioned vibration produced survey.

15. parallel detection method as claimed in claim 12 is characterized in that, aforementioned two guide portion are corresponding aforementionedly touch the part main body and be formed on the guiding elements of the upstream side that is configured in the picking direction.