CN101135080A - Pick-blowing nozzle for fluid jet loom - Google Patents
Pick-blowing nozzle for fluid jet loom Download PDFInfo
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- CN101135080A CN101135080A CNA2007101268722A CN200710126872A CN101135080A CN 101135080 A CN101135080 A CN 101135080A CN A2007101268722 A CNA2007101268722 A CN A2007101268722A CN 200710126872 A CN200710126872 A CN 200710126872A CN 101135080 A CN101135080 A CN 101135080A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3006—Construction of the nozzles
- D03D47/3013—Main nozzles
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Abstract
The invention provides a wefting nozzle for preventing weft yarn with strong retractility separating from the nozzle. A guiding piece (50) is arranged a holding portion (52) of a yarn carrier (14) of the wefting nozzle (10), which has a conical surface (57) and a downstream side opposite surface (58), wherein, the conical surface (57) is reduced in the radial direction gradually from the upstream side to the downstream side, the inside diameters (d1, d2) of the downstream side end portion (61) are the smallest inside diameters of the guiding hole (55) and smaller than that of the upstream side end portion (66) of the guiding portions (53, 54), the downstream side opposite surface (58) is continuous from a downstream side inner circumferential end (61) of the conical surface (57) to a downstream side cirumferential end (62) of the guiding piece.
Description
Technical field
The present invention relates to the Weft insertion nozzle of fluid jet loom, in more detail, relate to the technology of the weft yarn disengaging nozzle that prevents that the strong weft yarn of retractility from taking place when weaving.
Background technology
Weft yarn is sprayed in the fluid jet loom utilization in Warp opening Weft insertion nozzle carries out picking.Weft yarn is passed Weft insertion nozzle in advance, when the picking that forms Warp opening and reach regulation begins regularly, weft yarn is penetrated along with the injection fluid from the Weft insertion nozzle ejection and carry out picking.And, near the injection of end injection fluid when weft yarn reaches the head end of the opposite side of picking, warp thread becomes closure state then, utilizes the reed that advances that weft yarn is squeezed in the fell simultaneously.Afterwards, by being configured near the action the head end, the weft yarn that is connected on Weft insertion nozzle and the fabric is cut off from fabric for the line cutting knife.Then,, carry out the injection of Weft insertion nozzle repeatedly and beat up for carrying out when picking forms Warp opening next time at loom, thereby carry out the continuous running of weaving.
In recent years, the object of weaving as fluid jet loom, sometimes use the strong weft yarns of retractility such as wool type yarn or cladded yarn, when using such weft yarn, when utilizing in the back of beating up, because the elastic force that weft yarn self has makes the weft yarn termination that has cut off move to upstream one side, its result for line cutting knife cut-out weft yarn, sometimes weft yarn just breaks away from from Weft insertion nozzle, therefore has the problem that can't turn round continuously and so on.
As the technology that prevents this class problem, can consider for example by when not carrying out picking, also spraying the fluid (continuing to spray) of low pressure continuously, to prevent above-mentioned weft yarn disengaging nozzle from Weft insertion nozzle.But owing to the pressure of the strong more needed sustained firing of weft yarn of retractility is big more, thereby amount of fluid consumed is also big more, is bad from the such viewpoint of fluid energy waste.In addition, in stopped status or for polychrome picking loom, owing to making weft yarn keep nonselection mode weft yarn is in the fluid of sustained firing for a long time, its result can cause damage to weft yarn.When picking thereafter, can the front end of weft yarn be breaked end owing to the high-pressure injection fluid that sprays, thereby the unfavorable condition of continuous running being brought obstacle and so on is still arranged.
In addition, as the other method of not using sustained firing, the technology of patent documentation 1 record is arranged.In patent documentation 1, two kinds of technology are disclosed, the first, by will with predetermined timing energetically the weft yarn handle sturcture of driven opening be configured in the leading section of Weft insertion nozzle, carry out the driving of controlling of weft yarn with predetermined timing, thereby prevent that weft yarn breaks away from nozzle.But the problem that this technology exists is that structure becomes complicated owing to have positive driving mechanism.In addition, as patent documentation 1 disclosed another kind of technology be, by wire-like members such as many tags or wire being embedded in of spray-hole it is also being gathered on every side by downstream one side than the place of burying underground at Weft insertion nozzle, thereby even the withdrawal of weft yarn when cutting off, weft yarn has taken place, and weft yarn is also controlled by the above-mentioned wire-like members of gathering and is prevented to break away from nozzle.But the problem that this technology exists is, because wire-like members always contact with weft yarn, thereby makes the picking instability that becomes, and perhaps weft yarn caused damage etc.
In addition, keep the technology of weft yarn with air-flow as not using sustained firing, the technology of patent documentation 2 records is arranged.In patent documentation 2, weft yarn handle sturcture in the one side end configuration using aerojet of the upstream of Weft insertion nozzle, this weft yarn handle sturcture relatively disposes air jet hole and weft yarn handle part with a plurality of through holes in the mode in the path that clips weft yarn, and with predetermined timing from the air jet hole injection air, thereby weft yarn be pressed on the weft yarn handle part and controlled.But the problem of its existence is because of mechanism's structure that must have control aerojet becomes complicated, in addition, to lead in the air with loss of function if flyings etc. are trapped in, thereby must regularly remove.
Patent documentation 1: Japan's utility model discloses clear 51-124159 communique
Patent documentation 2: the flat 11-200193 communique of Japan's patent disclosure
Summary of the invention
The problem that the present invention exists in view of above-mentioned prior art and proposing, its purpose is to provide a kind of structure simpler, and can prevent that weft yarn weft yarn when cutting off breaks away from the technology of nozzle; And providing a kind of can not waste fluid energy and weft yarn is caused damage as existing apparatus, and need not the technology of periodic maintenance operation.
The Weft insertion nozzle of the present inventor exploitation, the structure of the impact energy (kinetic energy of yarn) in the time of when weft yarn cuts off, absorbing weft yarn and move to upstream one side by the weft yarn entrance hole of Weft insertion nozzle is made, thus can realize the foregoing invention purpose.Weft insertion nozzle as fluid jet loom of the present invention, its prerequisite is to possess: possess the nozzle body with patchhole and be inserted into the above-mentioned thread-carrier that inserts in the hole, above-mentioned thread-carrier possesses: entrance hole and one end and the chimeric large-diameter portion of above-mentioned patchhole with perforation; Be formed on the minor diameter of more leaning on downstream one side than above-mentioned large-diameter portion; And, compressed fluid is supplied in the space between the above-mentioned patchhole of the minor diameter of thread-carrier and nozzle body and the weft yarn ejaculation that will pass entrance hole more interval along with the needle-like portion that its external diameter dwindles gradually and link to each other with downstream one side front end that advances of a side downstream by the part of downstream one side than above-mentioned minor diameter.
And, main points as the structure of feature of the present invention are, the above-mentioned entrance hole of thread-carrier is formed with the accommodation section of swimming side insertion guiding piece from it and is located at the internal diameter leading-out portion littler than the internal diameter of above-mentioned accommodation section that more leans on downstream one side and its upstream one side end than above-mentioned accommodation section, the guiding piece that will have the pilot hole of perforation is inserted in the above-mentioned accommodation section of thread-carrier, be formed with on the pilot hole of above-mentioned guiding piece: the conical surface, form along with one side advances to downstream one side and radially dwindling gradually and the internal diameter of downstream one side end is the minimum diameter of this pilot hole from the upstream, and the internal diameter of downstream one side end is littler than the internal diameter of upstream one side end of above-mentioned leading-out portion; And downstream one side opposite face, the downstream one side outer circumference end of the above-mentioned guiding piece of Zhou Duanxiang is continuous in downstream one side of the above-mentioned conical surface.
According to above-mentioned main points, the guiding piece that constitutes the above-mentioned conical surface and downstream one side opposite face is inserted in the accommodation section of thread-carrier, constitute the thread guide eyelet of Weft insertion nozzle by the leading-out portion of the conical surface of the accommodation section of thread-carrier, guiding piece and thread-carrier, and, because the internal diameter that will be formed at downstream one side end of the conical surface on the guiding piece is set as littler than the internal diameter of upstream one side end of the leading-out portion of thread-carrier, thereby, be exposed to the thread guide eyelet of Weft insertion nozzle by the continuous downstream one side opposite face of the downstream one side outer circumference end of the above-mentioned guiding piece of Zhou Duanxiang in downstream one side of the conical surface.Axially radially and around weft path extending continuously of the relative Weft insertion nozzle of this downstream one side opposite face.Therefore, when after the end of beating up, carrying out the weft yarn cut-out, because the elastic force effect of weft yarn, even the weft yarn that is inserted in the entrance hole moves to upstream one side, because weft yarn collides on the downstream one side opposite face that is formed at weft path above-mentioned guiding piece on every side, it moves energy and is absorbed, thereby can move it slack-offly, thereby can prevent over the weft yarn that the takes place disengaging nozzle when cutting off.
According to above-mentioned main points, to compare with the existing apparatus that drives the weft yarn handle sturcture energetically, it is simple in structure, and also can not produce as the existing apparatus that makes the thread-like member contact, the problem of damage weft yarn or picking instability and so on when picking.In addition, according to the present invention, because weft yarn contacts with the conical surface of guiding piece when picking, and weft yarn contacts with the downstream one side opposite face of guiding piece when cutting off, thereby when carrying out picking, clean by the weft yarn that passes (young pilose antler etc.) in the thread guide eyelet at every turn, therefore, also need not as making the air-flow body produce do the cleaning of removing flyings etc. the prior art that keeps weft yarn continually in order to push.
As preferably, it is littler than the angle θ 2 that above-mentioned downstream one side opposite face forms to axial that above-mentioned guiding piece forms the angle θ 1 that the above-mentioned conical surface forms to axial.Thus, the weft yarn that moves to upstream one side when weft yarn is cut off collides on the end face of above-mentioned formation more effectively, can move it slack-off more effectively.As further preferred angle θ 2, be more than 90 ° below 150 °.Thus, because the end face that is formed on the guiding piece forms obtuse angle more than 90 ° with respect to axis, thereby when the weft yarn that moves to upstream one side collided on the end face, weft yarn was owing to formed angle is in so-called case of bending.Its result, be arranged to compare with angle θ 2, can absorb the weft yarn energy of a side shifting upstream better less than 90 ° situation, thereby, can shorten when weft yarn cuts off moving to the amount of movement of the weft yarn of upstream one side, thereby can prevent the disengaging nozzle of weft yarn effectively.
As further preferred, in above-mentioned accommodation section, dispose a plurality of guiding pieces.Thus, because of having set up guiding piece, the downstream one side opposite face of weft yarn termination institute butt also increases during the weft yarn withdrawal, thereby the chance of weft yarn termination and downstream one side opposite face butt also correspondingly increases therewith, therefore, can absorb the impact of bounce-back when being accompanied by weft yarn and cutting off better, thus the disengaging nozzle can prevent more effectively that weft yarn from cutting off the time.
As further preferred, in a plurality of above-mentioned guiding piece of configuration, form the above-mentioned guiding piece of upstream one side less than the mode of the inner diameter d 1 of the terminal of downstream one side guides with the value of the inner diameter d 2 of the terminal of upstream one side guides.Thus, the downstream one side opposite face of comparing upstream one side guides with the downstream one side opposite face of downstream one side guides can be provided with widelyer, and is better because weft yarn collides easily more effectively when weft yarn cuts off.
More specifically, form above-mentioned guiding piece, make to form length L 1 between the axial area of the conical surface of guiding piece, L2 inner diameter d 1, d2 greater than downstream one lateral terminal of guiding piece.Thus, because of forming the slow conical surface that tilts, the chance that weft yarn contacts with the conical surface in the time of can reducing picking.Therefore, weft yarn reduces from the resistance that nozzle is subjected to during picking, and is correspondingly more favourable to picking therewith.
Description of drawings
Fig. 1 is the cutaway view of Weft insertion nozzle of the present invention and the figure that represents peripheral part of Weft insertion nozzle.
Fig. 2 is the enlarged drawing of the cutaway view of Weft insertion nozzle of the present invention.
Fig. 3 is the enlarged drawing that constitutes the guiding piece of Weft insertion nozzle of the present invention, and what Fig. 3 (a) represented is axial cutaway view, and that Fig. 3 (b) represents is the figure that sees from axial downstream direction.
Fig. 4 is the axial cutaway view of formation and the difform guiding piece of Fig. 3.
Fig. 5 is the axial cutaway view that is identically formed difform guiding piece with Fig. 4.
Fig. 6 is the axial cutaway view that is identically formed difform guiding piece with Fig. 4.
Fig. 7 is the axial cutaway view that is identically formed difform guiding piece with Fig. 4.
Fig. 8 is the axial cutaway view of the thread-carrier of another embodiment of the present invention.
Among the figure:
The 10-Weft insertion nozzle, 12-picking main body, 14-thread-carrier, the 16-yarn-feeding port, 18-throttle part, 20-patchhole (first patchhole), 21-second patchhole, 22-pipe, the inside guide surface of 23-, the 24-hollow part, the outside guide surface of 25-, 30-entrance hole, the 32-base end part, 33-large-diameter portion, 34-minor diameter, 35-needle-like portion, 36-outer screw section, 37-negative thread portion, all end faces in the 38-, 39-spigot surface, 40-rectification fin, the 41-annular runner, 42-throttling runner, 43-rectification runner, the 44-ejiction opening, 45-runner, 47-air supply hole, the 48-connector, 49-pipeline, 50, (50a, 50b)-guiding piece, the 52-accommodation section, 53-first leading-out portion, 54-second leading-out portion, the 55-pilot hole, 56-bottom, the 57-conical surface (spigot surface), 58-downstream one side opposite face, 58a～58m-end face, 59-seat portion, 60-upstream one side end, 61-downstream one side end, 62-downstream one side peripheral end, 63～65-tie point, 66-upstream one side end, 69-pilot hole, the 70-weft yarn, 72-warp thread, 73-reed, the 74-fabric, 75-is for yarn cutting knife, 76, the 77-inner peripheral surface, the 78-guiding piece, the 79-tapering, θ 1-angle, θ 2-angle, D0, D1, D2, the D3-internal diameter, d1, the d2-internal diameter.
The specific embodiment
As can specifically implementing Weft insertion nozzle 10 of the present invention, as an example, below describe with Fig. 1～Fig. 2 with the employed main burner of air-jet loom machine.With reference to Fig. 1～Fig. 2, Weft insertion nozzle 10 mainly comprises: for example its external diameter forms the nozzle body 12 of the patchhole 20 cylindric, that its center has perforation; And have the entrance hole 30 of perforation and be inserted into thread-carrier 14 in the patchhole 20 of said nozzle main body 12 coaxially.
Nozzle body 12 has at one end first patchhole 20 of (rear end) side opening coaxially and is communicated with first patchhole 20 and at second patchhole 21 of the other end (front end) side opening.First patchhole 20 and second patchhole 21 all have circular cross sectional shape, and the former diameter is greater than the latter.
Thread-carrier 14 has with its axle center, and to be the center penetrate into the entrance hole 30 of the other end (front end) side from an end (rear end) side, and have successively from an end (rear end) side in its periphery: base end part 32; Diameter than base end part 32 little and with the essentially identical large-diameter portion 33 of internal diameter of first patchhole 20 of said nozzle main body 12; The minor diameter 34 that diameter is littler than large-diameter portion 33; And has diameter along with advancing to than minor diameter 34 also by the other end (front end) side and diminishing outside guide surface 25 and extending to the needle-like portion 35 of the other end (front end) side.In addition, on thread-carrier 14, be provided with outer screw section 36 in one of large-diameter portion 33 on distolateral, relative with it, be provided with negative thread portion 37 at one of first patchhole 20 of nozzle body 12 on distolateral, thread-carrier 14 is by from the inside of distolateral first patchhole 20 that is inserted into nozzle body 12 and be contained in wherein and make outer screw section 36 threaded engagement to be installed on the nozzle body 12 in above-mentioned negative thread portion 37.Thus, thread-carrier 14 and nozzle body 12 are more becoming airtight conditions by the position of upstream one side than large-diameter portion 33.
On the other hand, periphery at thread-carrier 14, between one lateral areas, downstream of minor diameter 34, be provided with a plurality of rectification fins 40 side by side circumferentially being separated with the compartment of terrain, constitute mobile rectification part of carrying out rectification compressed fluid (compressed air) with the spigot surface 39 that radially extends from the peripheral end face 38 of minor diameter 34.Therefore, the space that surrounds at first patchhole 20 by the large-diameter portion 33 of thread-carrier 14 and rectification fin 40 and nozzle body 12 constitutes annular runner 41, and, the space that is surrounded by the inside guide surface 23 and first patchhole 20 of rectification fin 40, needle-like portion 35, throttle part 18 constitutes the throttling runner 42 of ring-type, and these two runners are interconnected by a plurality of rectification runners 43 that are formed between the above-mentioned rectification fin that is arranged side by side 40,40.
In addition, on nozzle body 12, be provided with communicatively and be used to supply with compressed-air actuated air supply hole 47 with annular runner 41.Be connected with the connector 48 that is used for connecting pipe 49 on the air supply hole 47 of nozzle body 12, runner and air supply hole 47 in the pipeline 49 interconnect airtightly.And, be connected with by switch electromagnetic switch valve etc. in the upstream of pipeline 49 side and will supply with the not shown air control circuit of downstream one side from the compressed air of compressed fluid source.Thus, when reaching the picking timing of regulation, by not shown air control circuit compressed air is supplied to the air supply hole 47 of Weft insertion nozzle 10 in during regulation, this compressed air is through annular runner 41, rectification fin 40, throttling runner 42, from ring-type ejiction opening 44 ejections that are formed at thread-carrier 14 front ends.This air-flow is flowed through in the runner 45 of pipe 22 again, and the weft yarn that passes thread guide eyelet is also transported by this air-flow, the result, weft yarn 70 just with compressed air by ejiction opening 46 ejections of pipe 22 and penetrate.
In addition, the light material of nozzle body 12 operating weights is aluminium for example, be contained in pipe 22, throttle part 18, thread-carrier 14 in the nozzle body 12 in addition, be inserted into guiding piece 50a, 50b in the thread-carrier 14 in addition and all use material stainless steel for example with ABRASION RESISTANCE.The periphery of these each parts or interior week process by machining or line electrode spark machined etc.In addition, be inserted into pipe 22 in second patchhole 21 of nozzle body 12 by being bonded and fixed on it, relative with it, the throttle part 18 that is inserted in first patchhole 20 is fixed thereon by being pressed into.
The entrance hole 30 of thread-carrier 14 comprises following a few part: having the internal diameter that can hold guiding piece 50 from an end (rear end) side is the accommodation section 52 of D2; Link to each other with above-mentioned accommodation section 52 and along with advancing to diminishing first leading-out portion 53 of another distolateral its internal diameter; And link to each other with first leading-out portion 53 and extend to second leading-out portion 54 of front.In illustrated embodiment, form the accommodation section 52 of thread-carrier 14, make and keep its inside diameter D 2 basic identical with the outer circumference diameter of guiding piece 50 in its axial interval, and first leading-out portion 53 forms: the internal diameter of its upstream one side end j1 becomes the inside diameter D 1 littler than above-mentioned inside diameter D 2, become the inside diameter D 0 littler than its internal diameter that more is positioned at axial downstream one side end j2 than above-mentioned inside diameter D 1, and along with one side end j1 advances to downstream one side end j2 from the upstream, its internal diameter narrows down to inside diameter D 0 from inside diameter D 1 gradually.In addition, second leading-out portion 54 forms the leading section j3 until thread-carrier 14, and its internal diameter all keeps above-mentioned inside diameter D 0.Thus, constitute a part by the inner peripheral surface of the inner peripheral surface of first leading-out portion 53 and second leading-out portion 54 to the spigot surface of weft yarn guiding.In addition, first leading-out portion 53 becomes the inside diameter D 1 littler than the inside diameter D 2 of accommodation section 52 by the internal diameter with its upstream one side end, thereby 52 downstream one side end forms accommodation section 52 and first leading-out portion 53 are radially being extended and along the bottom 56 of circumferentially extending with coupling together in the accommodation section.Therefore, the guiding piece described later that inserted 50 is by 52 inserting and dispose with 56 butt ground, bottom from the accommodation section, can realize with its with respect to thread-carrier 14 in axial location.
Two guiding piece 50a, 50b being provided with the pilot hole 55 of perforation are inserted into the entrance hole 30 that as above is provided with successively from an end (upstream one side).In more detail, the guiding piece 50a of downstream one side is to insert with the mode of bottom 56 butts of accommodation section 52, and be bonded and fixed on bottom 56 and the accommodation section 52, and, the guiding piece 50b of upstream one side to be inserting with the mode of the upstream one side end face butt of downstream one side guides 50a, and is bonded and fixed on this one side end face, upstream and the accommodation section 52.The detailed structure of relevant guiding piece 50a, 50b is used Fig. 3 explanation.Fig. 3 (a) is the axial cutaway view of guiding piece 50a, 50b, and that Fig. 3 (b) represents is the figure of the guiding piece 50a that one side is seen from the downstream.
The pilot hole 55 of downstream one side guides 50a forms the conical surface 57, the internal diameter that this conical surface 57 is made its downstream one side end is an inner diameter d 1, and one side end dwindles to internal diameter d1 at axial its internal diameter one side end gradually to the downstream from the upstream, has the minimum diameter of this pilot hole 55 at the internal diameter of so-called downstream this pilot hole 55 of one side end.The viewpoint definition that such conical surface 57 will form to axial is θ 1, and as being used for the spigot surface that weft yarn leads is played a role.In addition, on guiding piece 50a, constituted the downstream one side opposite face 58a of the downstream one side peripheral end of downstream one side end that connects the conical surface 57 and guiding piece 50a.The downstream one side opposite face 58a of Xing Chenging like this, when definition itself and axial viewpoint definition θ 2, illustrated embodiment then becomes and 90 ° at the so-called right angle of axial quadrature, with regard to so-called guiding piece 50a, is acute angle with respect to the conical surface 57 with the angle θ 1 that axially forms, downstream one side opposite face 58a and the angle θ 2 that axially forms are the right angle, and in other words, angle θ 2 forms bigger than angle θ 1.In addition, also make essentially identical form for upstream one side guides 50b with downstream one side guides 50a.
So, the above-mentioned inner diameter d 1 of guiding piece 50a is the internal diameter littler than the inside diameter D 1 of upstream one side end of first leading-out portion 53 of thread-carrier 14, and downstream one side opposite face 58a form with axial direction of intersecting on and axis be weft yarn around extend continuously, and be arranged in the entrance hole 30 outstanding.In addition, the inner diameter d 2 of downstream one side end 61 of upstream one side guides 50b is the internal diameter littler than the inner diameter d 3 of upstream one side end 60 of downstream one side guides 50a, downstream one side opposite face 58b form with axial direction of intersecting on and axis be weft yarn around extend continuously, and be arranged in the entrance hole 30 outstanding.
Illustrated embodiment is to insert the example of two guiding piece 50a, 50b as guiding piece 50, is made of downstream one side guides 50a and two of upstream one side guides 50b.Two guiding pieces all have essentially identical shape.But guiding piece both can have been made internal diameter or apart from the mutual different structure of equidimension, also can make different shapes, perhaps also can insert one or three with on constitute guiding piece 50.
On the other hand, on the base end part 32 of thread-carrier 14, dispose yarn-feeding port 16, this yarn-feeding port 16 have with the internal diameter be that D3 connects, its introduction part form cross section be semi-circular shape and towards the upstream pilot hole of one side opening, and, yarn-feeding port 16 is installed from an end (upstream) side of thread-carrier 14, makes the center of pilot hole 69 of yarn-feeding port 16 consistent with the axis of the accommodation section 52 of thread-carrier 14.End (rear side) portion at the base end part 32 of thread-carrier 14 is provided with the seat portion 59 that can hold yarn-feeding port 16 that forms, in the also fixing present portion 59 of yarn-feeding port 16 bondings.In addition, the inside diameter D 3 of pilot hole 69 forms the inside diameter D 2 less than the entrance hole 30 of thread-carrier 14.
Such Weft insertion nozzle 10 is installed on the not shown slay that reed 73 installed by installing component etc., and Weft insertion nozzle 10 relative fabrics 74 are configured in the position of picking upstream one side.Weft yarn 70 passes the entrance hole 30 of the Weft insertion nozzle 10 of such formation, and in particular, promptly each pilot hole 55, first leading-out portion 53 and second leading-out portion 54 by accommodation section 52, guiding piece 50a, 50b passes.As shown in Figure 1, the entrance hole 30 that weft yarn 70 passes pilot hole 69, constitute in thread-carrier 14, and pass the runner 45 of pipe 22.Like this, when passing weft yarn 70,, and carry out aerojet, utilize the axial suction fluids that time strategic point is flow through in the entrance hole 30 that weft yarn is passed by the spray-hole 46 of Weft insertion nozzle 10 with the compressed air air supply supply hole 47 of low pressure.Also having, is that the conical surface 57 forms along with advancing to downstream one side diameter and dwindles gradually owing to will constitute the spigot surface of guiding piece 50a, 50b of the part of entrance hole 30, thereby passes Shi Buhui at weft yarn and tangle the operation that can weft yarn be passed.In addition, owing to be axial length L 2, the L1 of guiding piece 50a, 50b littler than its diameter D2, can not apply frictional force to weft yarn, thereby, successfully carrying out the operation of passing of above-mentioned weft yarn, the tension force rising this respect of the weft yarn when perhaps not causing picking is favourable.
And, in loom running, after many warp thread 72 are in open state, from the picking of regulation regularly Compressed Gas from the spray-hole ejection of Weft insertion nozzle 10, weft yarn 70 just picking in Warp opening.Then, arrive the head end of picking direction downstream one side when the front end of weft yarn 70 after, reed 73 is driven to the place ahead by not shown slay, the weft yarn 70 of picking is squeezed in the fell and is formed fabric 74.Then, if reed 73 retreats,, weft yarn 70 is cut off from fabric 74 by being located at the action for yarn cutting knife 75 of more leaning on downstream one side position than Weft insertion nozzle 10.Carrying out such weft yarn when cutting off, particularly when using the strong weft yarn of retractilities such as wool type yarn or cladded yarn, because the bounce-back when cutting off causes cut weft yarn termination how much to be withdrawn into upstream one side.Corresponding therewith, protrude in downstream one side opposite face 58 in the entrance hole 30 owing in the entrance hole that inside constituted 30 of thread-carrier 14, be provided with guiding piece 50a, 50b that utilization inserts, thereby, cause the weft yarn 70 that is in free state after the above-mentioned cut-out to move to while crawling in the process of upstream one side bearing bounce, the young pilose antler that weft yarn 70 itself or weft yarn 70 have etc. just with any one butt at least of above-mentioned two downstreams, one side opposite face 58a, 58b, absorbed the kinetic energy that acts on the weft yarn.Like this, the amount of movement that reduces weft yarn along with the kinetic energy of weft yarn correspondingly reduces, and its result can prevent the disengaging nozzle of so-called weft yarn.It is favourable that such downstream one side opposite face is arranged on aspect the kinetic energy of downstream one side left from the upstream one side (is distolateral) of thread-carrier 14 weft yarn when reducing weft yarn and cut off.
Can followingly design for the design size that constitutes guiding piece 50a, 50b shown in Figure 3.
(1) magnitude relationship of the inside diameter D 3 of the pilot hole 69 of the inside diameter D 2 of the internal diameter (inside diameter D 0 of inside diameter D 1, the second leading-out portion 54 of upstream one side end of first leading-out portion 53 specifically) of the each several part of the entrance hole 30 of formation thread-carrier 14, accommodation section 52, yarn-feeding port 16 is:
The magnitude relationship of the inner diameter d 1 of the inside diameter D 1 of upstream one side end of (2) first leading-out portions 53 and downstream one side end of the conical surface 57 is:
The magnitude relationship of the internal diameter (d1, d2) of downstream one side end of the conical surface of (3) two guiding piece 50a, 50b is:
(4) inner diameter d 1 of downstream one side end of axial length L 1, L2 and the conical surface of guiding piece, the magnitude relationship of d2 are:
In addition, the magnitude relationship of the angle θ 2 that angle θ 1 that forms about the conical surface 57 and the axis of guiding piece 50a, 50b and downstream one side opposite face 58 and axis form is as long as make angle θ 1＜angle θ 2.In order to absorb the kinetic energy of weft yarn better, angle θ 2 big persons are good, and angle θ 2 is more preferably more than 90 ° below 150 °.Example shown below is to make this angle carry out the example of various changes.
In addition, all distortion can be arranged, use a description of drawings part wherein below for being arranged at the conical surface 57 on guiding piece 50a, the 50b and the form of downstream one side opposite face 58.Example shown in Figure 4 is that downstream one side end 61 of the conical surface 57 is located at the axial example that more leans on downstream one side with respect to example shown in Figure 3.And be an example as described below, formation from the downstream one side peripheral end 62 of guiding piece 50 to two faces that link to each other downstream one side end 61 of the conical surface 57, the end face 58c that promptly one side peripheral end 62 extends to the center of radius direction from the downstream and the end face 58d that extends to the downstream of the conical surface 57 side end 61 from this inner, and end face 58d constitutes from the inner peripheral surface of first leading-out portion 53 and exposes (giving prominence to), thereby plays a role as so-called downstream one side opposite face.Its result, the end face 58d that constitutes downstream one side opposite face forms the obtuse angle with the angle θ 2 that axially forms.
In addition, example shown in Figure 5 is that downstream one side end 61 of the conical surface 57 is not in as shown in Figure 4 downstream one side but further be arranged on more example by upstream one side.And, form the inner peripheral surface 76 that extends abreast to the tie point 64 of axial downstream one side from downstream one side end 61 of the conical surface 57.It is an example as described below, the end face 58e and the end face 58f that links to each other with this end face 58e and extend to the tie point 64 of above-mentioned inner peripheral surface 76 that are connected to the tie point 63 of radial direction from the downstream one side peripheral end 62 of guiding piece 50 have been formed, and the part of end face 58e and end face 58f constitute from the inner peripheral surface of first leading-out portion 53 and expose (giving prominence to), and play a role as so-called downstream one side opposite face.Its result, it is an example as described below, the angle θ 2 that the relative axis direction of end face 58f that constitutes downstream one side opposite face is formed forms acute angle, and the angle θ 3 that the relative axis direction of end face 58e is formed forms the right angle, and unspecified angle θ 2～θ 3 is arranged to bigger than the angle θ 1 of the conical surface 57 relative axis directions formation.
In addition, example shown in Figure 6 is an example as described below, though as shown in Figure 4, downstream one side end 61 of the conical surface 57 is arranged on downstream one side, but, further more forming the inner peripheral surface 77 that extends to tie point 64 and axially parallel ground by downstream one side than this downstream one side end 61.So, it is an example as described below, formed from two faces linking to each other between the downstream one side peripheral end 62 of guiding piece 50 and the inner peripheral surface 77, end face 58g that promptly one side peripheral end 62 extends to the center of radius direction from the downstream and the end face 58h that extends to the tie point 64 of above-mentioned inner peripheral surface 77 by the inner of end face 58g, end face 58h constitutes from the inner peripheral surface of first leading-out portion 53 and exposes (giving prominence to), and plays a role as so-called downstream one side opposite face.Its result, the angle θ 2 that the end face 58h of formation downstream one side opposite face forms to axial is identical with the occasion of Fig. 4, forms the obtuse angle.
In addition, as shown in Figure 4, also downstream one side opposite face can be arranged to be trapped in the territory, one lateral areas, upstream to replace protruding in the territory, one lateral areas, downstream of first leading-out portion 53.More specifically as shown in Figure 7, be an example as described below, downstream one side opposite face be by from the downstream one side peripheral end 62 of guiding piece to the inboard end face 58i that extends of radial direction, be trapped in the end face 58m that more forms than this end face 58i and be essentially the continuous interior all end face 58j of same diameter and constitute from upstream one side of the interior Zhou Duanxiang end face 58k of end face 58i by the end face 58k of axial upstream one side, in the mode of downstream one side end 61 that is connected to the conical surface 57 from end face 58k.Its result, the angle θ 2 that the end face 58m of formation downstream one side opposite face forms to axial forms the obtuse angle same with the occasion of Fig. 4.
Can carry out following distortion for the foregoing description.In the Weft insertion nozzle 10 of above-mentioned Fig. 1～shown in Figure 2, form from inside diameter D 1 and dwindle gradually though be formed in the internal diameter of first leading-out portion 53 on the thread-carrier 14 to internal diameter D0 diameter, also can constitute diameter and not dwindle.Under this occasion, because the coupling part at first leading-out portion 53 and second leading-out portion 54 produces step, weft yarn might be tangled by this step when passing weft yarn, thereby, be more preferably first leading-out portion 53 and second leading-out portion 54 are made identical inside diameter D 1, in other words, also can form along with not dwindling at the axial advancement diameter.
The foregoing description is guiding piece 50a, 50b with respect to the position of thread-carrier 14 is to be in than axial center more by the example of upstream one side.But, guiding piece 50a, 50b were configured in compare axial more by upstream one side with illustrative example, also can be configured on the contrary with illustrative example and compare more by downstream one side.In other words, guiding piece 50a, 50b can be configured on the axial optional position except that thread-carrier 14 both ends.
About first leading-out portion 53 of thread-carrier 14, also can constitute by parts with thread-carrier 14 splits.More specifically as shown in Figure 8, the accommodation section 52 of thread-carrier 14 is configured to receive the guiding piece 78 with through hole 79, and, will form identical along with advancing to the diminishing tapering 79 of one side diameter, downstream with the angle of the conical surface of first leading-out portion 53 of the foregoing description as the through hole 79 of guiding piece 78.Such guiding piece 78 is at first inserted in the accommodation section 52, constitute Weft insertion nozzle 10 by inserting subsequently by the order of above-mentioned guiding piece 50a, 50b.In addition, also can be with continuous constituting with a body component more than two among guiding piece 50a, the 50b, 78.
Though the foregoing description as an example, also can be applicable to for example Weft insertion nozzle of weaving machine with water spraying with the main burner of jet loom.
Claims (6)
1. the Weft insertion nozzle of a fluid jet loom, possess have patchhole (20) nozzle body (12) and be inserted into thread-carrier (14) in the above-mentioned patchhole (20), above-mentioned thread-carrier (14) possesses: entrance hole (30) and one end and the chimeric large-diameter portion (33) of above-mentioned patchhole (20) with perforation; Be formed on the minor diameter (34) of more leaning on downstream one side than above-mentioned large-diameter portion (33); And more interval along with the needle-like portion (35) that its external diameter dwindles gradually and link to each other with downstream one side front end that advances of a side downstream by the part of downstream one side than above-mentioned minor diameter (34), the weft yarn (70) that compressed fluid is supplied in the space between the above-mentioned patchhole (20) of the minor diameter (34) of thread-carrier (14) and nozzle body (12) and will pass entrance hole (30) penetrates, it is characterized in that
The above-mentioned entrance hole (30) of thread-carrier (14) is formed with the accommodation section (52) of swimming side insertion guiding piece from it and is located at internal diameter (D1) leading-out portion (53,54) littler than the internal diameter of above-mentioned accommodation section (52) that more leans on downstream one side and its upstream one side end than above-mentioned accommodation section (52)
The guiding piece (50) that will have the pilot hole (55) of perforation is inserted in the above-mentioned accommodation section (52) of thread-carrier (14),
Be formed with on the pilot hole of above-mentioned guiding piece (50): the conical surface (57), form along with one side advances to downstream one side and radially dwindling gradually and the internal diameter (d1, d2) of downstream one side end is the minimum diameter of this pilot hole (55) from the upstream, and the internal diameter of downstream one side end (61) (d1, d2) is littler than the internal diameter (D1) of upstream one side end (66) of above-mentioned leading-out portion (53,54); And downstream one side opposite face (58), interior Zhou Duan (61) is continuous to the downstream of above-mentioned guiding piece one side outer circumference end (62) from downstream one side of the above-mentioned conical surface (57).
2. the Weft insertion nozzle of fluid jet loom according to claim 1 is characterized in that,
It is littler than the angle (θ 2) that above-mentioned downstream one side opposite face (58,58a, 58b, 58d, 58f, 58h, 58m) forms to axial that above-mentioned guiding piece (50) forms angle (θ 1) that the above-mentioned conical surface (57) forms to axial.
3. the Weft insertion nozzle of fluid jet loom according to claim 2 is characterized in that,
It is more than 90 ° below 150 ° that above-mentioned guiding piece (50) forms above-mentioned angle (θ 2).
4. according to the Weft insertion nozzle of any one described fluid jet loom in the claim 1～3, it is characterized in that,
In above-mentioned accommodation section (52), dispose a plurality of above-mentioned guiding pieces (50a, 50b).
5. the Weft insertion nozzle of fluid jet loom according to claim 4 is characterized in that,
In above-mentioned a plurality of guiding piece (50a, 50b), the internal diameter (d2) of downstream one side end of the above-mentioned conical surface (57) of upstream one side guides (50b) forms the internal diameter (d1) less than the pilot hole of downstream one side end of the above-mentioned conical surface (57) of downstream one side guides (50a).
6. according to the Weft insertion nozzle of any one described fluid jet loom in the claim 1～5, it is characterized in that,
The formed axial siding-to-siding block length of the above-mentioned conical surface (57) (L1, L2) that this guiding piece forms above-mentioned guiding piece (50a, 50b) is bigger than the internal diameter (d1, d2) of downstream one side end of this guiding piece.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-234900 | 2006-08-31 | ||
| JP2006234900 | 2006-08-31 | ||
| JP2006234900A JP2008057070A (en) | 2006-08-31 | 2006-08-31 | Weft-inserting nozzle of fluid jet loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101135080A true CN101135080A (en) | 2008-03-05 |
| CN101135080B CN101135080B (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101268722A Expired - Fee Related CN101135080B (en) | 2006-08-31 | 2007-06-29 | Pick-blowing nozzle for fluid jet loom |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008057070A (en) |
| CN (1) | CN101135080B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194846A (en) * | 2013-04-16 | 2013-07-10 | 苏州大学 | Master nozzle structure of jet-type textile machine and mounting method thereof |
| CN105304223A (en) * | 2015-12-03 | 2016-02-03 | 浙江正导光电股份有限公司 | Fine copper wire mold penetrating guiding device |
| CN108291337A (en) * | 2015-06-18 | 2018-07-17 | 凯文·克雷梅耶 | Promote the oriented energy deposition of high-speed applications |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5771445A (en) * | 1980-10-15 | 1982-05-04 | Nissan Motor | Wefting nozzle of air jet type loom |
| US4494888A (en) * | 1981-07-27 | 1985-01-22 | Seisakusho Kabushiki Kaisha Toyoda Jidoshokki | Weft inserting method and apparatus for an air jet loom |
| DE8903512U1 (en) * | 1989-03-21 | 1990-04-19 | Lindauer Dornier Gmbh, 8990 Lindau, De | |
| IT1266636B1 (en) * | 1993-10-27 | 1997-01-09 | Nuovo Pignone Spa | MAIN NOZZLE PERFECTED FOR AIR TEXTILE FRAME |
| JP4461650B2 (en) * | 2001-07-11 | 2010-05-12 | 株式会社豊田自動織機 | Weft yarn transfer nozzle in air jet loom |
| JP2004156162A (en) * | 2002-11-05 | 2004-06-03 | Tsudakoma Corp | Picking nozzle of air jet loom and pipe used therefor |
| JP2004270080A (en) * | 2003-03-10 | 2004-09-30 | Toyota Industries Corp | Device for preventing falling-out of thread in jet loom |
-
2006
- 2006-08-31 JP JP2006234900A patent/JP2008057070A/en active Pending
-
2007
- 2007-06-29 CN CN2007101268722A patent/CN101135080B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194846A (en) * | 2013-04-16 | 2013-07-10 | 苏州大学 | Master nozzle structure of jet-type textile machine and mounting method thereof |
| CN103194846B (en) * | 2013-04-16 | 2014-07-09 | 苏州大学 | Master nozzle structure of jet-type textile machine and mounting method thereof |
| CN108291337A (en) * | 2015-06-18 | 2018-07-17 | 凯文·克雷梅耶 | Promote the oriented energy deposition of high-speed applications |
| CN108291337B (en) * | 2015-06-18 | 2021-06-01 | 凯文·克雷梅耶 | Directed energy deposition to facilitate high speed applications |
| CN105304223A (en) * | 2015-12-03 | 2016-02-03 | 浙江正导光电股份有限公司 | Fine copper wire mold penetrating guiding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101135080B (en) | 2011-01-12 |
| JP2008057070A (en) | 2008-03-13 |
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