CN101358405B - Weft insertion nozzle and weft-fall-out preventing component used in weft insertion nozzle - Google Patents
Weft insertion nozzle and weft-fall-out preventing component used in weft insertion nozzle Download PDFInfo
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- CN101358405B CN101358405B CN2008101306288A CN200810130628A CN101358405B CN 101358405 B CN101358405 B CN 101358405B CN 2008101306288 A CN2008101306288 A CN 2008101306288A CN 200810130628 A CN200810130628 A CN 200810130628A CN 101358405 B CN101358405 B CN 101358405B
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- thread
- carrier
- cartridge
- weft yarn
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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 weft insertion nozzle and a weft-fall-out preventing component used in weft insertion nozzle, characterized in that a tubular component (51a) having a through hole (50a) and a cylindrical section (55a) is fitted within or around a thread guide (3), the cylindrical section (55a) at least having a tubular shape at one end in an axial direction thereof. Of the tubular component (51a) and the thread guide (3), the one whose inner periphery surface substantially serves as a weft guiding path (5) has a downstream end in a weft-insertion direction that is provided with a plurality of projections (11) arranged in a circumferential direction, each projection (11) being tapered from a base end (15) towards a tip thereof.
Description
Technical area
The present invention relates to a kind of Weft insertion nozzle of fluid jet type weaving machine, more specifically, the technology of the bad phenomenon (so-called nozzle comes off) that the bounce-back when relating to prevent weft yarn because of the cut-out weft yarn comes off from Weft insertion nozzle.
Background technology
Utility model discloses clear 51-124159 communique (to call patent documentation 1 in the following text), the flat 11-200193 communique of patent disclosure (to call patent documentation 2 in the following text) discloses at fluid jet type weaving machine the method that the weft yarn after preventing to beat up comes off from nozzle.
More specifically, the technology of patent documentation 1 is by thread-like member such as a plurality of nylon wires or metal wire are embedded in Weft insertion nozzle in the mode that the downstream at the flow direction of compressed fluid converges at the jet periphery of Weft insertion nozzle, and be made as the state that weft yarn often contacts thread-like member, even the bounce-back of the weft yarn that cuts off from weaving cotton cloth during because of the cut-out weft yarn after beating up to be back to wefting insertion side in the opposite direction, also be hung in thread-like member, prevent returning of weft yarn with this.
Yet, according to the technology of patent documentation 1, exist, so wefting insertion becomes unstable because weft yarn often contacts thread-like member, or problem such as damage weft yarn.
On the other hand, the technology of patent documentation 2 is in the inside of Weft insertion nozzle, more is positioned at upstream side than thread-carrier and is provided with weft yarn handle sturcture according to aerojet.This weft yarn handle sturcture is located at the matrix that connects guide and nozzle body, position between above-mentioned guide and said nozzle main body has, be configured to clamp the air jet hole of weft path relatively, weft yarn handle part with the through hole of the internal face that is provided with the above-mentioned matrix of a plurality of perforations, with official hour air is sprayed from air jet, weft yarn pushed remain on the weft yarn handle part, weft yarn returns when preventing to cut off weft yarn with this.
Yet, according to the technology of patent documentation 2, must possess the mechanism of control aerojet, constitute complicatedly, in addition, control and become inoperative if dust is stuck in the through hole weft yarn, therefore there is problems such as needing cleaning regularly.
[patent documentation 1] utility model discloses clear 51-124159 communique
The flat 11-200193 communique of [patent documentation 2] patent disclosure
Summary of the invention
Thereby problem of the present invention is, in being used in the Weft insertion nozzle of fluid jet type weaving machine, even use the strong weft yarn of retractility, also do not damage stability, the weft yarn quality of wefting insertion, available simple mechanism, and weft yarn comes off from nozzle when preventing to cut off weft yarn.
On the basis of above-mentioned problem, the invention of claim 1, dispose in the inboard that is entrenched in above-mentioned thread-carrier (3) and the either party's in the outside mode and to have through hole (50a, 50b, 50c, 50d, 50e), and possess an axial at least distolateral cylindric (55a who is set as tubular, 55b, 55c, 55d, cartridge (51a 55e), 51b, 51c, 51d, 51e), dispose above-mentioned cartridge (51a, 51b, 51c, 51d, in zone 51e), at above-mentioned cartridge (51a, 51b, 51c, 51d, inner peripheral surface constitutes the wefting insertion direction downstream front end of the parts of weft yarn guiding pipeline (5) in fact 51e) and in the thread-carrier (3), is provided with a plurality of being set as along with from cardinal extremity (15) distolateral advancing and be the projection (11) of tapered forward in circumferencial direction.
Thereby, during the weft yarn after cut-out is beaten up (9), even the elasticity that the weft yarn (9) of the Weft insertion nozzle side that is cut off has because of self moves to retracting direction towards the upstream side of Weft insertion nozzle (1), weft yarn (9) positively hangs at least one ditch portion (41) of being delimited by above-mentioned a plurality of projections (11), promptly by the sidepiece (16) of the projection (11) of adjacency and cardinal extremity (15) delimitation and along with before base end side and then be the ditch portion (41) of tapered, thereby can stop further moving of weft yarn (9), the so-called weft yarn (9) that prevents comes off from nozzle.And, it or not technology as patent documentation 1, be used to stop the parts that retract to protrude in weft yarn traveling pathway side and often contact with weft yarn (9), the formation that the conduct of this claim invention stops weft yarn (9) to retract, above-mentioned a plurality of projection (11) is configured to the front (axially) of thread-carrier (3) outstanding, so when wefting insertion,, can not damage weft yarn (9) for derivative weft yarn (9) does not produce resistance by fluid jet.
About the described Weft insertion nozzle of claim 1 (1), particularly, by disposing above-mentioned cartridge (51a, 51e) with the inboard of the leading section (10) that is entrenched in above-mentioned thread-carrier (3) and the mode of the either party in the outside, and the leading section (10) of thread-carrier (3) is made as dual structure in radial direction, in the leading section (10) of above-mentioned thread-carrier (3) and above-mentioned cartridge (51a, 51e),, be provided with a plurality of above-mentioned projections (11) in circumferencial direction in the wefting insertion direction downstream front end of the parts of inboard.(invention of claim 2)
Thereby, during the weft yarn after cut-out is beaten up (9), even the elasticity that the weft yarn that cuts off from weaving cotton cloth (9) has because of weft yarn self moves to retracting direction towards the upstream side of Weft insertion nozzle (1), the weft yarn of mobile status (9) hangs over the projection (11) of the front end that is located at thread-carrier (3), with this, can make mobile the stopping of weft yarn (9), and can prevent that weft yarn (9) from coming off from nozzle.
About the described Weft insertion nozzle of claim 2 (1), it is also passable that the cardinal extremity (15) that makes above-mentioned projection (11) more is positioned at upstream side than the end face (52) in the wefting insertion direction downstream of the parts in the outside in the leading section (10) of thread-carrier (3) and the cartridge (51a, 51e).(invention of claim 3)
Thereby, reduce for the degree of exposing of the orifice runner (40) that is formed on the ditch portion (41) between a plurality of projections (11).Thus, suppressed to let out to the inboard air current flow of weft yarn guiding pipeline (5) by ditch portion (41), its result, flowing of the fluid of wefting insertion direction is more stable, has realized good wefting insertion and stable loom operation.Therefore, can suppress reduction as the weft yarn carrying capacity of in the past Weft insertion nozzle (1).
About claim 2 or 3 described Weft insertion nozzles (1), form end difference (56a, 56e) and when constituting thinner wall section, it is also passable that above-mentioned cartridge (51a, 51e) is configured to be entrenched in above-mentioned end difference (56a, 56e) at the leading section (10) of above-mentioned thread-carrier (3).(invention of claim 4)
Thereby, can delimit the axial location of cartridge (51a, 51e) for thread-carrier (3), and the inhomogeneous disappearance of the axial location of the cartridge (51a, 51e) when making thread-carrier (3) and the fraction defective of Weft insertion nozzle (1) reduce, and so-called yield rate improves.
In addition, about the described Weft insertion nozzle of claim 1 (1), particularly, mode with the inboard that is entrenched in thread-carrier (3) disposes above-mentioned cartridge (51b, 51c, 51d), at the wefting insertion direction downstream of above-mentioned cartridge (51b, 51c, 51d) front end, a plurality of above-mentioned projections (11) are set in circumferencial direction.(invention of claim 5)
Thereby, during the weft yarn after cut-out is beaten up (9), even the weft yarn (9) of the Weft insertion nozzle side that cuts off from weaving cotton cloth moves to retracting direction because of elasticity that self the had upstream side towards Weft insertion nozzle (1), the weft yarn of mobile status (9) hangs over the projection (11) of the front end that is located at thread-carrier (3), with this, can make mobile the stopping of weft yarn (9), and can prevent that weft yarn (9) from coming off from nozzle.
About claim 2 or 5 described Weft insertion nozzles (1), above-mentioned cartridge (51a, 51b, 51c, 51d) is formed profile cylindric that has the through hole (50a, 50b, 50c, 50d) of same internal diameter and same external diameter across axial total length.(invention of claim 6)
Thereby the processing and fabricating of cartridge (51a, 51b, 51c, 51d) is easy, helps a large amount of productions.
About the described Weft insertion nozzle of claim 5 (1), form than above-mentioned cylindric (55c, 55d) at above-mentioned cartridge (51c, 51d) and more to be positioned at wefting insertion direction upstream side and to be connected in the flange part (57c, 57d) of above-mentioned cylindric (55c, 55d), be located at bottom surface (54c, 54d) above-mentioned thread-carrier (3), that extend to the radial direction outside, it is also passable to dispose above-mentioned cartridge (51c, 51d) in the mode of the end face in the wefting insertion direction downstream that contacts above-mentioned flange part (57c, 57d).(invention of claim 7)
Thereby, above-mentioned cartridge (51c, 51d) easily can be positioned the assigned position in the weft yarn guiding pipeline (5) of above-mentioned thread-carrier (3) and dispose, the inhomogeneous disappearance of the axial location of the cartridge (51c, 51d) when making thread-carrier (3) and the fraction defective of Weft insertion nozzle (1) reduce, and so-called yield rate improves.
The invention of claim 8, to dispose the nozzle fall-out preventing component (53) of use as cartridge (51a in the mode of the inboard of the thread-carrier (3) that is entrenched in Weft insertion nozzle (1), 51b, 51c, 51d) constitute, more specifically, above-mentioned cartridge (51a, 51b, 51c, 51d) has the through hole (50a that connects axially, 50b, 50c, 50d) with an axial at least distolateral cylindric (55a at axial same external diameter, 55b, 55c, 55d), at cylindric (55a, 55b, 55c, front end 55d) is provided with a plurality of being set as along with from cardinal extremity (15) distolateral advancing and be the projection (11) of tapered forward in circumferencial direction.
Thereby,, can make thread-carrier (3) in the past also hold the function that prevents that weft yarn from coming off from nozzle by nozzle fall-out preventing component (53) being installed at thread-carrier (3) in the past.
Description of drawings
Fig. 1 is the profile of the Weft insertion nozzle periphery of expression air-jet loom.
Fig. 2 is the amplification profile of the Weft insertion nozzle periphery of air-jet loom.
Fig. 3 is the oblique view and the profile of leading section 10 of the thread-carrier 3 of embodiments of the invention.
Fig. 4 is the expanded view along the A-A ' of Fig. 3.
Fig. 5 is the expanded view of variation of the shape of expression projection 11.
Fig. 6 is the expanded view of variation of the shape of expression projection 11.
Fig. 7 is the expanded view of variation of the shape of expression projection 11.
Fig. 8 is the expanded view of variation of the shape of expression projection 11.
Fig. 9 is the profile of leading section 10 of the thread-carrier 3 of embodiments of the invention.
Figure 10 is the amplification profile of the Weft insertion nozzle periphery of air-jet loom.
Among the figure:
The 1-Weft insertion nozzle, 2-nozzle body, 3-thread-carrier, the 4-patchhole, 5-weft yarn guiding pipeline, 6-large-diameter portion, the 7-minor diameter part, 8-knitting needle portion, the export-oriented guide face of 8a-, the 9-weft yarn, 10-leading section, 11-projection, 12-orifice parts, 12a-is interior to guide face, the 13-conduit, the 14-guide eye, 15-cardinal extremity, 16-sidepiece, the 17-top, 20-warp thread, 21-opening, the 22-reed, the 23-cutter, 24-weaves cotton cloth, the 25-pipeline, 26-connector, 27-annular runner, 28-rectification runner, 29-straightener(stator) blade, 30-ejiction opening, the 31-internal thread part, 32-external thread part, 33-the 1st patchhole, 34-the 2nd patchhole, 40-orifice runner, 41-ditch portion, the 42-outer peripheral face, 43-inner peripheral surface, 50a-through hole, the 50b-through hole, 50c-through hole, 50d-through hole, the 50e-through hole, 51a-cartridge, 51b-cartridge, the 51c-cartridge, 51d-cartridge, 51e-cartridge, the 52-end face, 53-weft yarn nozzle fall-out preventing component, 54a-bottom surface, the 54b-bottom surface, 54c-bottom surface, 54d-bottom surface, the 54e-bottom surface, the cylindric portion of 55a-, the cylindric portion of 55b-, the cylindric portion of 55c-, the cylindric portion of 55d-, the cylindric portion of 55e-, 56a-end difference, the 56b-end difference, the 56c-end difference, 56d-end difference, 56e-end difference, the 57c-flange part, the 57d-flange part
The specific embodiment
Weft insertion nozzle 1 of the present invention is applicable to fluid jet type weaving machine.And Weft insertion nozzle 1 of the present invention can roughly be divided into two kinds according to the installation site as the cartridge of weft yarn nozzle fall-out preventing component 53 (claims 8) of characteristic of the present invention.That is, cartridge is installed in the thing ( cartridge 51a, 51e) of the leading section 10 of thread-carrier 3 and cartridge is installed in two kinds of the things ( cartridge 51b, 51c, 51d) of optional position of the weft yarn guiding pipeline 5 of thread-carrier 3 inside.Below, the example that at first just cartridge 51a, 51e is installed in the leading section 10 of thread-carrier 3 describes that (Fig. 1～Fig. 9), the example of optional position that just cartridge 51b, 51c, 51d is installed in the weft yarn guiding pipeline 5 of thread-carrier 3 inside afterwards describes (Figure 10).
Fig. 1 and Fig. 2 represent to be suitable in the fluid jet type weaving machine of the present invention, the periphery of the Weft insertion nozzle of air-jet loom (main burner).
Weft insertion nozzle 1 comprises as critical piece: has the nozzle body 2 of patchhole 4 and is inserted into the thread-carrier 3 of above-mentioned patchhole 4 and quickens orifice parts 12 as the air of compressed fluid, and the conduit 13 with the hollow bulb at weft yarn 9 and air interflow.At this, patchhole 4 forms that the 1st patchhole 33 that is inserted with orifice parts 12 and the 2nd patchhole 34 that conduit 13 is installed are connected on coaxial and the so-called through hole that forms, in addition, near the interior week the ditch portion of the 1st patchhole 33, be provided with to the internal thread part 31 of thread-carrier 3 is installed.
In addition, the material of each parts though use for example metal material, also can be the material of tool abrasion performance such as pottery, and as long as each parts is with known method manufacturings such as machining, discharge processing or shapings.In the example shown here, nozzle body 2 has adopted aluminium, and thread-carrier 3, orifice parts 12 and conduit 13 have adopted stainless steel.
Thread-carrier 3, within it portion have the internal diameter of being formed along with near enter the mouth before axial central portion and then reduced, afterwards, internal diameter is maintained with the footpath, and to the weft yarn guiding pipeline 5 of the weft yarn 9 of axial perforation.In addition, in the outside, from near the above-mentioned inlet to axially comprising: the large-diameter portion 6 with external thread part 32 of the internal thread part 31 that is embedded in above-mentioned patchhole 4, with the minor diameter part 7 that is formed at wefting insertion direction downstream than this, with its external diameter more interval along with before the side downstream and then be connected in the knitting needle portion 8 of downstream front end in reduced than the part in this downstream, and, between minor diameter part 7 and knitting needle portion 8, be formed with a plurality of straightener(stator) blades 29 with radial extension, between two straightener(stator) blades 29 of adjacency, be formed with rectification runner 28 towards the radial direction outside.
Thread-carrier 3 is inserted into the 1st patchhole 33, the screwing togather by internal thread part 31 and external thread part 32 of nozzle body 2, be installed to be and keep airtight conditions, constitute annular runner 27 in the space that is surrounded by the patchhole 4 of minor diameter part 7 and knitting needle portion 8 and nozzle body 2 (the 1st patchhole 33).In addition,, the connector 26 that is used for connecting line 25 is installed, and is provided with the not shown runner that never illustrated pressure fluid source communicates with pipeline 25 and annular runner 27 at nozzle body 2.In addition, pipeline 25 is connected on the output of not shown solenoid electric valve of the not shown fluid from pressure fluid source of control, if to the wefting insertion of stipulating during the time, compressed air (air) flows into annular runner 27 by connector 26 from pipeline 25, afterwards, after straightener(stator) blade 29 rectifications of compressed air (air) by rectification runner 28, be accelerated by interior orifice runner 40 of delimiting, be ejected from ejiction opening 30 to guide face 12a by the export-oriented guide face 8a of knitting needle portion 8, the 1st patchhole 33, orifice parts 12.
On the other hand, insert the weft yarns 9 that lead in weft yarn guiding pipeline 5 from guide eye 14, drawn from thread-carrier 3 by the negative pressure of the air that is ejected from jet 30, with the air interflow of the hollow bulb of the conduit 13 of flowing through, the ditch portion from conduit 13 is penetrated with air.By weft yarn 9 wefting insertion that penetrated opening 21, after beating up, 24 separate from weaving cotton cloth by cutter 23 by reed 22 to warp thread 20.In addition, be located at the guide eye 14 of inlet of the weft yarn guiding pipeline 5 of thread-carrier 3, have the guide face of also wanting path than the internal diameter of the inlet portion of weft yarn guiding pipeline 5, for example the material that has an antifriction consumption by mailglass etc. is made.
And the leading section 10 in the downstream of thread-carrier 3 embed the cartridge 51a of promising characteristic of the present invention, and the front end of cartridge 51a is provided with a plurality of projections 11 in circumferencial direction.In addition, in Fig. 2, expression embeds cartridge 51a the inboard of the leading section 10 of thread-carrier 3, the leading section 10 of thread-carrier 3 is made as the example of dual structure in radial direction, but shown in also can Fig. 9 described as follows (c), cartridge 51e is embedded the outside of the leading section 10 of thread-carrier 3, the leading section 10 of thread-carrier 3 is made as dual structure in radial direction.Under any circumstance, in the leading section 10 of above-mentioned cartridge 51a, 51e and thread-carrier 3 in the parts of inboard, be the wefting insertion direction downstream front end that inner peripheral surface constitutes the parts of weft yarn guiding pipeline 5 in fact in above-mentioned cartridge 51a, 51e and the thread-carrier 3, be provided with a plurality of above-mentioned projections (11) in circumferencial direction
(a) of Fig. 3 reaches the inboard of (b) representing cartridge 51a is embedded in the leading section 10 of thread-carrier 3, and the example of projection 11 is set at the front end of cartridge 51a.Cartridge 51a forms across axial total length, has the through hole 50a of same internal diameter and the drum of cylindric 55a of the profile with same external diameter.In addition, at the wefting insertion direction downstream of cartridge 51a front end, be provided with a plurality of being set as along with from cardinal extremity 15 distolateral advancing and be the projection 11 of tapered forward in circumferencial direction.These a plurality of projections 11 are equipped on circumferencial direction at certain intervals according to following condition, are formed with ditch portion 41 between the contiguous projection 11.The weft yarn 9 that is drawn back into upstream side during weft yarn after cut-out is beaten up hangs at least one this ditch portion 41 and is captured.A plurality of projections 11 pass through to wait with discharge processing the wefting insertion direction downstream front end of known method machining cartridge 51a, and are made as one with cartridge 51a.
On the other hand,, end difference 56a is set in the inboard forms thinner wall section, form the stage shape that has with downstream opposed bottom surface 54a at the leading section 10 of thread-carrier 3.And cartridge 51a has the external diameter in week in the thinner wall section that is entrenched in thread-carrier 3, and cartridge 51a is configured to make the end face of wefting insertion direction upstream side to be contacted with bottom surface 54a, is entrenched in the end difference 56a of thread-carrier 3 inboards.Be located at the internal diameter of weft yarn guiding pipeline 5 of leading section 10 of the internal diameter of through hole 50a of cartridge 51a and thread-carrier 3 when identical, 2 inner peripheral surfaces are continuous, thus do not produce opposing when drawing weft yarn 9, so desirable.Yet if the section difference is little, the opposing during wefting insertion is little, does not have much affect.In addition, the inner peripheral surface of the through hole 50a of cartridge 51a is communicated with the weft yarn of thread-carrier 3 guiding pipeline 5, in the leading section 10 of thread-carrier 3, constitutes weft yarn guiding pipeline 5 in fact.
In addition, cartridge 51a is with respect to thread-carrier 3, and the cardinal extremity 15 that is configured to projection 11 more is positioned at upstream side than the end face 52 in the wefting insertion direction downstream of the leading section 10 of thread-carrier 3.Thus, can suppress the degree of exposing more for the ditch portion 41 of orifice runner 40.Thereby, in the air-flow that can suppress to quicken because of orifice runner 40, let out flowing from the ditch portion 41 between a plurality of projections 11 of being formed to the air-flow of weft yarn guiding pipeline 5 inboards, therefore, stably form to wefting insertion direction airflow flowing, realize stable wefting insertion, and can prevent the reduction of the weft yarn carrying capacity of Weft insertion nozzle 1.
Then, describe in detail if be conceived to one of projection 11, projection 11 waits known method according to discharge processing, processes from front end to length H at the wefting insertion direction downstream front end that axially digs cartridge 51a.At this moment, the bottom surface that is formed at circumferencial direction as cardinal extremity 15, is processed as along with from cardinal extremity 15 distolateral advancing and outstanding and be that the top 17 of front end face has length a at circumferencial direction with tapered at circumferencial direction forward.Shape about projection 11, more specifically, by the sidepiece 16 that is connected in as two faces of the cardinal extremity 15 of bottom surface, with the plane top 17 that is connected in its front end, with the inner peripheral surface of the through hole 50a that extends from wefting insertion direction upstream side continuously and the outer peripheral face of cylindric 55a, and the inner peripheral surface 43 and the outer peripheral face 42 that are connected in above-mentioned sidepiece 16 and top 17 form, and in the space of being divided by relative sidepiece 16 and cardinal extremity 15, form the ditch portion 41 that communicates with weft yarn guiding pipeline 5.And projection 11 configurations preferably tangle the structure of weft yarn 9 more than 4 as optimum, serve as to be configured at interval at circumferencial direction with 6～30 quantity.The interval of the front end of the projection 11 that will adjoin at this moment, is made as and makes employed weft yarn 9 can enter the interval of being located at the ditch portion 41 between the projection 11 of adjoining.
The size of the front end of actual cartridge 51a, inner radius r1 is 1～2mm, preferably guides the internal diameter of pipeline 5 identical with the weft yarn of thread-carrier 3.In addition, thickness t 1 is below the thickness of thread-carrier 3, particularly, is 0.2～0.5mm.And, the spacing P of the number of projection 11, projection 11, in length a, height (distances that top 17 and cardinal extremity the are 15) H of projection 11 of the circumferencial direction at the top 17 of projection 11, by the rugosity equivalence of the inner radius r1 of cartridge 51a, thickness t 1, employed weft yarn, the decision optimum tangles the numerical value of weft yarn 9.But,, satisfy the following condition that obtains by experience in order fully to obtain effect of the present invention.
(1) the length a of the circumferencial direction of projection 11 is made as the thickness t of front end of above-mentioned cartridge 51a below 1.Thus, when cutting off the weft yarn after beating up, when weft yarn 9 is pulled upstream side, because of can more positively entering at least one ditch portion 41, so can prevent positively that so-called nozzle from coming off.In addition, if establish the length a of circumferencial direction littler, can prevent also that then the weft yarn 9 that is pulled from 17 being rebounded at the top.
(2) height H of projection 11 is established also littler than the inner radius r1 of the front end of cartridge 51a.In addition, bigger than thickness t 1 as if height H is made as, the then above-mentioned weft yarn that is pulled 9 can more positively hang at least one ditch portion 41, so desirable.
When (3) thickness t 1 of the spacing P of projection 11 and the front end of cartridge 51a is roughly the same or bigger than it, on experience, better on effect of the present invention.
Take all factors into consideration these conditions, determine the result of length a, height H, spacing P, recognize in the present invention, the quantity of projection 11 is decided to be 6～30 for suitably.If be decided to be below 5, then the interval of projection 11 (that is, ditch portion 41) is wide, and weft yarn 9 can come off, and can not fully obtain effect of the present invention.In addition, then narrow if be decided to be more than 31 because of the interval of projection 11, therefore, but be difficult to tangle at the weft yarn 9 of present fluid jet type weaving machine wefting insertion, can not fully obtain effect of the present invention.But the quantity of projection 11 can change to a certain extent according to size of employed weft yarn kind or thread-carrier 3 etc.
In addition, in this embodiment, be connected in the outer peripheral face 42 and the inner peripheral surface 43 of sidepiece 16, extend to top 17 from cardinal extremity 15 sides with same thickness, still, for preventing the at random of air-flow, its thickness also can form along with before the forward end and then attenuation.In addition, the relative sidepiece 16 angulation α of two projections 11 of adjacency, though, be preferably in usually (so-called acute angle, preferred below 45 °) below 90 ° by the kind of employed weft yarn 9, the size of leading section 10 (r1, t1), above-mentioned condition (1)～(3) decision.
Fig. 4 is the expanded view of the shape of projection 11 among the A-A ' of presentation graphs 3.Fig. 5～Fig. 8 represents the variation of the shape of projection 11.Fig. 5 is made as pointed (a=0) with triangular wave shape projected front ends portion, and base end part (bottom) is formed the plane.If be made as this kind shape, (Fig. 4) compares during for the plane with top 17, and the weft yarn 9 that returns can not collide in the top 17 planar portions, easier weft yarn 9 imported base end parts.Fig. 6 forms V word ditch (so-called bottom is a linearity) with respect to the projection 11 of Fig. 5 with base end part.If be made as this kind shape, can expect to clamp and the effect of the weft yarn 9 that keeps returning in V word ditch portion, can prevent further that nozzle from coming off.Fig. 7 is made as saw waveform shape with projection 11, has the above-mentioned advantage of the shape of Fig. 5, Fig. 6 in the lump.Fig. 8 is by by forming pointed projection 11 across the next door of being carved the U word ditch setting establish.
Fig. 9 represents cartridge is embedded in other examples of the present invention of the leading section 10 of thread-carrier 3.Fig. 9 (a) is not made as the stage shape with the inboard of the leading section 10 of thread-carrier 3 but is made as straight shape (cylindric), and cartridge 51a is embedded wherein example.For the weft yarn 9 that does not damage the state of flying away, preferably with wefting insertion direction upstream side end face top rake of cartridge 51a etc.
(b) of Fig. 9 is the top 17 of projection 11 of being located at the front end of cartridge 51a more is positioned at wefting insertion direction upstream side than the end face 52 of thread-carrier 3 example.In this embodiment, dual structure, the parts (this example middle yarn guider 3) in the outside cover projection 11 fully from the outside, therefore, projection 11 (ditch portion 41) is not exposed at orifice runner 40.Thus, can suppress fully to let out to the air current flow of the inboard of weft yarn guiding pipeline 5 from ditch portion 41, so, its result, flowing of the fluid of wefting insertion direction is more stable, and wefting insertion is stable, can prevent the reduction of the weft yarn carrying capacity of Weft insertion nozzle 1, realize that latitude stops few, more stable operation.In addition, for the side-play amount t3 of the end face 52 at top 17 for number mm about, particularly, below the preferred above 5mm of 0.1mm.In addition, do not make top 17 and end face 52 skews, can expect same effect yet and be located on the same plane.
(c) of Fig. 9 is embedded in cartridge 51e the leading section 10 of thread-carrier 3, and the leading section 10 of thread-carrier 3 is made as the example of dual structure in radial direction.In this embodiment, be provided with projection 11 in conduct in the front end of the thread-carrier 3 of the parts of dual structure inboard.In addition, form end difference 56e and constitute thinner wall section in the outside of the leading section 10 of thread-carrier 3, cartridge 51e has the internal diameter of the above-mentioned end difference 56e that is entrenched in the outside.And, cartridge 51e is by being made as the roughly the same external diameter of external diameter before the upstream side that has with the above-mentioned end difference 56e of thread-carrier 3, and cartridge 51e is worked as the leading section 10 of thread-carrier 3 in fact, even reach the zone that is provided with cartridge 51e, can not upset the air-flow that quickens by orifice runner 40 than its upstream side, on the stabilisation face of wefting insertion, better.In addition, cartridge 51e is configured to the cardinal extremity 15 of projection 11 with respect to thread-carrier 3, more is positioned at upstream side than the end face 52 in the wefting insertion direction downstream of cartridge 51e.And, in this embodiment,, or be located on the same plane if make the top 17 of the projection 11 of the front end of being located at thread-carrier 3 more be positioned at wefting insertion direction upstream side than the end face 52 of cartridge 51e, then can expect the identical effect of example with Fig. 9 (b).
In addition, cartridge 51a, cylinder part 51e are installed at the leading section 10 of thread-carrier 3, can consider by be pressed into, the installation of bonding, screw etc.For example, if in cartridge 51a threading portion, in the leading section 10 machining internal thread portions of thread-carrier 3, and be made as the axial relative position of the leading section 10 that can regulate cartridge 51a and thread-carrier 3, then can regulate the axial location of projection 11 according to shape of yarn kind, yarn etc.
It more than is the example that cartridge is installed in the leading section 10 of thread-carrier 3.Then, the example that just cartridge is installed in thread-carrier 3 inside describes.
In Figure 10, three kinds of cartridge 51b, 51c, 51d are configured to be entrenched in thread-carrier 3 inboards respectively, (more specifically, following each cylindric 55b, 55c, 55d) wefting insertion direction downstream front end is provided with a plurality of projections 11 in circumferencial direction at above-mentioned cartridge 51b, 51c, 51d.In addition, in Figure 10, three kinds of cartridges all are installed in thread-carrier 3, but also can install arbitrary cartridge or appropriate combination those more than two kinds.In addition, cartridge is installed in the optional position in the zone that is provided with weft yarn guiding pipeline 5.The length a of the circumferencial direction at the top 17 of the spacing P of the number of projection 11, projection 11, projection 11, the height of projection 11 (distance between top 17 and the cardinal extremity 15) H, same with the example of the leading section 10 that cartridge is installed in thread-carrier 3, by the rugosity equivalence of the inner radius r1 of cartridge 51b, 51c, 51d, thickness t 1, employed weft yarn, the decision optimum tangles the numerical value of weft yarn 9.
At first, the cartridge 51b of the 1st embodiment is configured to be entrenched in the weft yarn guiding pipeline 5 of thread-carrier 3 inboards in the zone of the minor diameter part 7 that is provided with thread-carrier 3.Cartridge 51b is formed has wefting insertion direction upstream side for the conical bore in big footpath be positioned at the wefting insertion direction downstream of conical bore and at the through hole 50b of axial same internal diameter, across axial total length and the drum of cylindric 55b of the profile of same external diameter is arranged.
On the other hand, in the zone of the minor diameter part 7 that is provided with thread-carrier 3, its inboard weft yarn guiding pipeline 5 is formed with and has inside diameter D 2 and axially keeping the inner peripheral surface in footpath together, be connected in this and with respect to the stage 56b of shape portion of the bottom surface 54b of entrance side with having, simultaneously, the weft yarn guiding pipeline 5 that more is positioned at its downstream is set as and almost keeps than inside diameter D 2 inside diameter D 1 of path more.Cartridge 51b with the state configuration of the end face (top 17 of projection 11) that is contacted with wefting insertion direction downstream at bottom surface 54b and for axial location.Cartridge 51b has the external diameter of the inner peripheral surface of the inside diameter D 2 that is entrenched in the stage 56b of shape portion, on the other hand, have than the inside diameter D 1 of weft yarn guiding pipeline 5 more the inner diameter d 1 of path through hole 50b and almost be set as drum.In addition, at cartridge 51b, be used to guide weft yarn 9 to be provided with along with from the inlet portion footpath d1 taper seat of undergauge gradually before the side and then inwardly downstream, its end is set as the inner peripheral surface (weft yarn guiding pipeline 5) that connects inner diameter d 1.
Then, the cartridge 51c of the 2nd embodiment is configured to be entrenched in the inboard weft yarn guiding pipeline 5 in zone of the large-diameter portion 6 that is provided with thread-carrier 3.Cartridge 51c, by wefting insertion direction upstream side be set as big footpath, along with the conical bore of footpath d2 undergauge before the side downstream and then inwardly, with the wefting insertion direction downstream that is positioned at conical bore, at the through hole 50c of axial same inner diameter d 2, with the profile with same external diameter and in circumferencial direction have a plurality of from the distolateral forward projection 11 of extending with tapered of base end part 15 cylindric 55c and more be positioned at wefting insertion direction upstream side and be set as than cylindric the bigger footpath of 55c, be connected in the flange part 57c of above-mentioned cylindric 55c and constitute than above-mentioned cylindric 55c.
On the other hand, the weft yarn inboard in the zone of the large-diameter portion 6 that is provided with thread-carrier 3 guides pipeline 5, has the bottom surface 54c that extends to the radial direction outside, be formed with and be set as the stage 56c of shape portion that keeps same internal diameter than its upstream side from inlet portion, more be positioned at the place, downstream than the zone that is provided with bottom surface 54c, be formed with than its path and along with before the side downstream and then through the coniform weft yarn guiding pipeline 5 of undergauge of inside diameter D 2 ' gradually more, the flange part 57c of cartridge 51c disposes the end face contact in wefting insertion direction downstream and for axial location at bottom surface 54c.The inner peripheral surface of the through hole 50c of cartridge 51c and the weft yarn of thread-carrier 3 guiding pipeline 5 is communicated with, and is interval in the part of the large-diameter portion 6 of thread-carrier 3, constitutes weft yarn in fact and guides pipeline 5.
In addition, from cylindric the 55c of flange part 57c to the extension of wefting insertion direction downstream, have the external diameter of the path of inside diameter D 2 than weft yarn guiding pipeline 5 ' more and inner diameter d 2 and towards downstream side to extend with the footpath, at the base end part 15 of its front end, be provided with in circumferencial direction and a plurality ofly more be the projection 11 of tapered towards front end than it.Therefore, relation from above-mentioned internal diameter, be configured to expose in weft yarn guiding pipeline 5 inboards in circumferencial direction integral body by a plurality of projections 11, the ditch 41 that in other words is provided with by the projection 11 of adjacency, thus, weft yarn 9 can enter the ditch 41 between the projection 11 of adjacency when cutting off weft yarn.
Then, the cartridge 51d of the 3rd embodiment is configured to be entrenched in the peristome of wefting insertion direction upstream side of the weft yarn guiding pipeline 5 of thread-carrier 3.In this embodiment, cartridge 51d comes off the function except that having the weft yarn of preventing nozzle, also has the function as the guide eye 14 that weft yarn is guided to weft yarn guiding pipeline 5 centers.Cartridge 51d, has through hole 50d at the angle circle of the peristome of the wefting insertion direction upstream side of axial same internal diameter, with have the external diameter that is entrenched in to the inner peripheral surface of the inside diameter D 3 of thread-carrier, in circumferencial direction have a plurality of base end parts 15 from its front end downstream the side tapered projection 11 of extending cylindric 55d and more be positioned at wefting insertion direction upstream side and be connected the flange part 57d of above-mentioned cylindric 55d than above-mentioned cylindric 55d.
On the other hand, guide the end of the wefting insertion direction upstream side of pipeline 5 at the weft yarn of thread-carrier 3, be provided with the stage shape portion with the bottom surface 54d that extends to the radial direction outside, cartridge 51d contacts the end face in the wefting insertion direction downstream of above-mentioned flange part 57d at bottom surface 54d and for axial location.The through hole 50d of cartridge 51d is provided with as the inner peripheral surface of same inner diameter d 3, simultaneously, is communicated with the weft yarn guiding pipeline 5 of thread-carrier 3, and the peristome at the large-diameter portion 6 of thread-carrier 3 constitutes weft yarn in fact and guides pipeline 5.Cylindric the 55d of cartridge 51d, its external diameter is set as than the inside diameter D 3 of weft yarn guiding pipeline 5 path more, expose in weft yarn guiding pipeline 5 inboards in circumferencial direction integral body by a plurality of projections 11, the ditch 41 that in other words is provided with by the projection 11 of adjacency, therefore, weft yarn 9 can enter ditch 41 between the projection 11 of adjacency when cutting off weft yarn.
In addition, the wefting insertion direction downstream weft yarn before that disposes the zone of cartridge 51b, 51c, 51d guides inside diameter D 1, D2 ', the D3 of pipeline 5, is set to bigger than through hole 50b, 50c, the inner diameter d 1 of 50d, d2, the d3 of above-mentioned cartridge 51b, 51c, 51d respectively.According to the relation of above-mentioned internal diameter (D1＞d1, D2 '＞d2, D3＞d3), the projection 11 of cartridge 51b, 51c, 51d (top 17, ditch portion 41) is exposed at weft yarn guiding pipeline 5, therefore, even weft yarn 9 moves to wefting insertion direction upstream side, also positively hang at least one the ditch portion 41 between the projection 11 of adjacency, and can prevent positively that the nozzle of weft yarn 9 from coming off.
In addition, if inner diameter d 1, the d2 of through hole 50b, the 50c of cartridge 51b, 51c is made as in the minimum diameter of the weft yarn guiding pipeline 5 of thread-carrier 3, the probability that the weft yarn 9 of then desiring to return hangs over projection 11 (ditch portion 41) is higher and favourable.
The present invention is not limited to the Weft insertion nozzle as air-jet loom, is installed as one, weft yarn is penetrated main burner to the Warp opening with slay.For example, also applicable to also be located at upstream side than it, side is given the auxiliary main burner with weft yarn downstream.In addition, also applicable to the Weft insertion nozzle of water jet loom.
Claims (7)
1. a Weft insertion nozzle (1), it is the Weft insertion nozzle (1) of fluid jet type weaving machine, comprise have patchhole (4) nozzle body (2) and be inserted into the thread-carrier (3) of above-mentioned patchhole (4), above-mentioned thread-carrier (3) has the weft yarn guiding pipeline (5) of perforation, on the other hand, an end that is set as above-mentioned thread-carrier is entrenched in above-mentioned patchhole (4), simultaneously, be provided with its external diameter in wefting insertion direction downstream along with before the side downstream and then the knitting needle portion (8) that dwindles, compressed fluid is supplied with in space between the above-mentioned patchhole (4) of the knitting needle portion (8) of thread-carrier (3) and nozzle body (2), penetrate and inserted the weft yarn (9) that leads in weft yarn guiding pipeline (5), it is characterized in that
Have through hole (50a, 50b, 50c, 50d, 50e) and possess an axial at least distolateral cartridge (51a, 51b, 51c, 51d, 51e) that is set as cylindric (55a, 55b, 55c, 55d, 55e) of tubular, be configured to be entrenched in the inboard of above-mentioned thread-carrier (3) and the either party in the outside, simultaneously
Dispose in the zone of above-mentioned cartridge (51a, 51b, 51c, 51d, 51e), inner peripheral surface constitutes the parts of weft yarn guiding pipeline (5) in fact in above-mentioned cartridge (51a, 51b, 51c, 51d, 51e) and thread-carrier (3), at wefting insertion direction downstream front end, be provided with a plurality of being set as along with from cardinal extremity (15) distolateral advancing and be the projection (11) of tapered forward in circumferencial direction.
2. Weft insertion nozzle according to claim 1 (1) is characterized in that,
By disposing above-mentioned cartridge (51a, 51e) with the inboard of the leading section (10) that is entrenched in above-mentioned thread-carrier (3) and the mode of the either party in the outside, and the leading section (10) of thread-carrier (3) is made as dual structure in radial direction, in the leading section (10) of above-mentioned thread-carrier (3) and above-mentioned cartridge (51a, 51e),, be provided with a plurality of above-mentioned projections (11) in circumferencial direction in the wefting insertion direction downstream front end of the parts of inboard.
3. Weft insertion nozzle according to claim 2 (1) is characterized in that,
The cardinal extremity (15) of above-mentioned projection (11) more is positioned at upstream side than the end face (52) in the wefting insertion direction downstream of the parts in the outside in the leading section (10) of thread-carrier (3) and the cartridge (51a, 51e).
4. according to claim 2 or 3 described Weft insertion nozzles (1), it is characterized in that,
Leading section (10) in above-mentioned thread-carrier (3) forms end difference (56a, 56e) and constitutes thinner wall section, simultaneously, disposes above-mentioned cartridge (51a, 51e) in the mode that is entrenched in above-mentioned end difference (56a, 56e).
5. Weft insertion nozzle according to claim 1 (1) is characterized in that,
Mode with the inboard that is entrenched in thread-carrier (3) disposes above-mentioned cartridge (51b, 51c, 51d), at the wefting insertion direction downstream of above-mentioned cartridge (51b, 51c, 51d) front end, is provided with a plurality of above-mentioned projections (11) in circumferencial direction.
6. according to claim 2 or 5 described Weft insertion nozzles (1), it is characterized in that,
Above-mentioned cartridge (51a, 51b, 51c, 51d) forms across axial total length, profile cylindric with the through hole (50a, 50b, 50c, 50d) of same internal diameter and same external diameter, simultaneously, above-mentioned cartridge (51a, 51b, 51c, 51d) is configured in the inboard of above-mentioned thread-carrier (3).
7. Weft insertion nozzle according to claim 5 (1) is characterized in that,
At above-mentioned cartridge (51c, 51d), be formed with than above-mentioned cylindric (55c, 55d) and more be positioned at wefting insertion direction upstream side and be connected in the flange part (57c, 57d) of above-mentioned cylindric (55c, 55d), simultaneously, above-mentioned cartridge (51c, 51d) is in the mode of the end face in the wefting insertion direction downstream that contacts above-mentioned flange part (57c, 57d), be configured in the weft yarn guiding pipeline (5) of being located at above-mentioned thread-carrier (3), to bottom surface (54c, 54d) that radial direction extends.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-169149 | 2007-06-27 | ||
| JP2007169149A JP2009007694A (en) | 2007-06-27 | 2007-06-27 | Weft-insertion nozzle and nozzle slip-out prevention member for weft used for weft-insertion nozzle |
| JP2007169149 | 2007-06-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358405A CN101358405A (en) | 2009-02-04 |
| CN101358405B true CN101358405B (en) | 2011-04-27 |
Family
ID=39760787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101306288A Expired - Fee Related CN101358405B (en) | 2007-06-27 | 2008-06-25 | Weft insertion nozzle and weft-fall-out preventing component used in weft insertion nozzle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2014808B1 (en) |
| JP (1) | JP2009007694A (en) |
| CN (1) | CN101358405B (en) |
| DE (1) | DE602008006131D1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20090336A1 (en) * | 2009-03-06 | 2010-09-07 | Promatech Spa | LAUNCHING NOZZLE WITH WEAVING CHECKS FOR A TEXTILE FRAME WITH AIR. |
| JP6024536B2 (en) * | 2013-03-15 | 2016-11-16 | 株式会社豊田自動織機 | Main nozzle of air jet loom |
| CN104389089B (en) * | 2014-10-30 | 2016-04-06 | 东华大学 | For the production of main nozzle of jet loom structure and the Weft insertion method thereof of elastic force jean |
| JP6137133B2 (en) * | 2014-11-18 | 2017-05-31 | 株式会社豊田自動織機 | Main nozzle of air jet loom |
| CN112553752B (en) * | 2020-12-17 | 2022-04-26 | 苏州新东南纺织科技有限公司 | Jet loom nozzle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697405A (en) * | 1995-03-29 | 1997-12-16 | Lindauer Dornier Gesellschaft Mbh | Weft thread insertion nozzle |
| CN1400347A (en) * | 2001-08-01 | 2003-03-05 | 津田驹工业株式会社 | Picking nozzle for fluid jetting loom |
| CN1530481A (en) * | 2003-03-10 | 2004-09-22 | 株式会社丰田自动织机 | Anti-needle-off device of jet loom |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51124159U (en) * | 1975-03-20 | 1976-10-07 | ||
| DE2965070D1 (en) * | 1979-08-08 | 1983-04-28 | Sulzer Ag | Nozzle arrangement for a jet loom |
| JPS5752579U (en) * | 1980-09-10 | 1982-03-26 | ||
| JP4057124B2 (en) * | 1998-01-20 | 2008-03-05 | 株式会社豊田自動織機 | Weft thread gripping device in jet loom |
-
2007
- 2007-06-27 JP JP2007169149A patent/JP2009007694A/en active Pending
-
2008
- 2008-06-12 EP EP20080010745 patent/EP2014808B1/en not_active Not-in-force
- 2008-06-12 DE DE200860006131 patent/DE602008006131D1/en active Active
- 2008-06-25 CN CN2008101306288A patent/CN101358405B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697405A (en) * | 1995-03-29 | 1997-12-16 | Lindauer Dornier Gesellschaft Mbh | Weft thread insertion nozzle |
| CN1400347A (en) * | 2001-08-01 | 2003-03-05 | 津田驹工业株式会社 | Picking nozzle for fluid jetting loom |
| CN1530481A (en) * | 2003-03-10 | 2004-09-22 | 株式会社丰田自动织机 | Anti-needle-off device of jet loom |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平11-200193A 1999.07.27 |
| JP特开平8-260295A 1996.10.08 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2014808B1 (en) | 2011-04-13 |
| JP2009007694A (en) | 2009-01-15 |
| EP2014808A2 (en) | 2009-01-14 |
| CN101358405A (en) | 2009-02-04 |
| EP2014808A3 (en) | 2009-12-30 |
| DE602008006131D1 (en) | 2011-05-26 |
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