CN1056318A - Improvement on the interlacing apparatus - Google Patents

Abstract

A kind of combined type interlacing nozzle aggregate of more excellent type, the structure of its nozzle member all is oval-shaped.

Description

Improvement on the interlacing apparatus

The present invention relates to be used for the improvement on the interlacing apparatus of plurality of fibers multifilament, more particularly, is exactly the architecture advances in yarn path, an interlacing nozzle place.

Entwining of polyfilament yarn at first is by Bunting and Nelson, just at United States Patent (USP) the 2nd, 985, and 995 and 3,115, No. 691 last propositions.Entwine and be common in the high-speed spinning process at present.To entwine that the effective utilization of interlacing apparatus of " nozzle " improves be very desirable for being used to be commonly referred to as for it.

In practical operation, the effect of entwining generally be by with the fluid air flow of several bursts of high speeds along a planar guide, obtain thereby form continuous fluid whirl, then with yarn axially between the two fluid streams stream by and be parallel to this plane, disclosed as Bunting and Nelson.This technology is up to still using basically at present.The plane that high-velocity fluid stream is directed to so-called " baffle plate ".Because usually always the tow spinning be wound on the independent position of spinning machine, therefore a plurality of nozzles are installed on the independent unit, the relation that just forms " combination " is more convenient, as Christini etc. at United States Patent (USP) the 3rd, 936, No. 577 and second edition patent 29, scheme shown in X1 and the X11 in No. 285, and the patent application serial number 07/267 that waits simultaneously batch, 061, shown in the 12nd of the Fig. 1 of (apply on November 4th, 1988 by Harris, authorize at present), like this, the baffle plate that makes the back side of one of them nozzle just can be used as adjacent nozzles is used.Therefore, the cross-sectional configuration of these nozzle members all is shown in rectangular, the as described above accompanying drawing.In this aggregate, the yarn path between per two adjacent nozzles thereby all be the slit that has parallel edges, the size that is to say slit is consistent.The 12nd has shown a present existing nozzle aggregate among Fig. 1 of Harris, our used just this aggregate before the present invention.

We find, if when the blocking surface of this combined pipe formula nozzle is not the convex surface of planar shaped but a mitigation, and the limited big improvement of its efficient.It is the parallel structure in west basically that the nozzle that we adopt the yarn path to expand outwardly has replaced.Occur on the both sides of yarn path in the time of preferably this expanding outwardly, during as the oval-shaped nozzle member of application as shown in this paper Fig. 1, this and foregoing be that rectangular existing nozzle member is different basically, the yarn path that it limited has two parallel edges.

Therefore, the invention provides a kind of follow-on interlacing nozzle, it comprises that a blocking surface and one comprise at least one injection catheter duct wall, this duct wall is used for above-mentioned relatively blocking surface and ejects one high pressure draught, between described duct wall and described blocking surface, form the passage of a yarns, the passage two ends dispose a yarn import and a yarn outlet respectively, it is improved to be characterised in that described blocking surface is the convex surface of a mitigation, thereby the import of described yarn path and outlet, the position that is injected into described blocking surface with respect to described fluid air flow expands outwardly.Preferably duct wall and blocking surface both are convex surfaces.In a combined pipe formula nozzle aggregate, between the adjacent nozzles part, form many yarn paths at an easy rate, its wall all is a convex surface, one side the yarn path a blocking surface is provided, include a conduit or nozzle on the another side at least.

Like this, a preferable modified combined pipe formula interlacing nozzle aggregate comprises many nozzle members, its duct wall connects together and constitute many yarn paths between the duct wall of adjacent two nozzle members, above-mentioned duct wall is comprising fluid conduit systems, each conduit can the relative tube wall of adjacent nozzle spare ejects one high-pressure fluid air-flow on the another side of described yarn path towards being positioned at, its improved lower end that is characterised in that described yarn path is located at described conduit place at least expands outwardly, and preferably upper and lower side all expands outwardly certainly.These duct walls preferably all be curved surface to form the yarn path that these expand outwardly.

Therefore, according to the present invention, the interlacing nozzle aggregate of a combined pipe formula includes many nozzle members, its duct wall connects together and constitute many yarn paths between adjacent two nozzle member tube wall, described nozzle member, its cross section is oval-shaped basically, and includes fluid conduit systems, and this fluid conduit systems is positioned at one side of described yarn path and ejects flow of high-pressure fluid in order to the relative duct wall towards the adjacent nozzle of the another side that is positioned at described yarn path.

The most handy pressing plate of nozzle member is fixed, and the surface of pressing plate is being a convex surface near yarn path place at least, so that fluid can be flowed out smoothly from the yarn path and try one's best the deposition of minimizing on the pressing plate of vicinity, yarn path.For example, finishing stain deposition.

Fig. 1 shows the plane of the interlacing nozzle aggregate that the present invention is preferable.

Fig. 2 shows the front view of (part is represented with section) of aggregate among Fig. 1.

Fig. 3 shows that aggregate demonstrates an aggregate that is installed in the valve jacket and an one thread that therefrom passes along the view of 3-3 ' line among Fig. 2.

Referring to Fig. 1,2 and 3, a preferable nozzle aggregate comprises a series of nozzle members 11 that have duct wall 12, it is the plurality of stepped serrations shape basically that duct wall has one, this can be very clearly as seen from Figure 1, nozzle member is loaded on the rectangle base 13, and the width of rectangle base 13 (W) so just can form the passage 14 of yarn greater than the minor axis (M) of oval pipeline wall 12 between adjacent two duct walls 12.Demonstrate five such nozzle members 11 that come together among the figure, thereby form four yarn paths 14 between adjacent two duct walls 12.Nozzle member 11 is fixed together by the longitudinal screw 15 in the bracing frame 16, the end of track 18 is enclosed within the bracing frame 16, bracing frame 16 is positioned on the spinning manifold 17 by pin 26, and pressing plate 24 is fixed on base 13 on the casing 17, and pressing plate itself is fixing by screw 25.A limit of this yarn path 14 is limited by a duct wall spare.This wall spare includes two longitudinal separations that are used for pressure fluid, tilt opposed conduit or nozzles 19, and the another side of yarn path is then as the blocking surface 20 of the fluid that goes out by these nozzle ejection.Nozzle 19 communicates with the passage 21 of a sky at nozzle member 11 and base 13 inside, and communicates with a perforate 22 successively, and perforate 22 communicates with a fluid intake 23 that is connected to the air supply source (not shown) again successively.

Fig. 3 shows that an one thread 35 passes a nozzle aggregate from one for silk source (not shown), and this confession silk source just may be a spinneret orifice in the situation of spinning machine.Can see that in the drawings this nozzle aggregate is encased by an optional case 31,32 and yarn outlets 33 of a yarn inlet are equipped with on the case, also be equipped with a fluid discharge outlet 34, will separate and respectively with its discharge from the unnecessary fluid at the yarn place that penetrates.For this purpose, the place, top and bottom that is preferably in pressing plate 24 is equipped with curved surface, so that fluid is successfully led out near yarn path 14.

Already mentioned existing nozzle aggregate includes a series of rectangle nozzle members that have duct wall, the width of nozzle member base is greater than the width of wall body, so that form the slit of parallel edges betwixt, as the yarn path, a limit of these wall spares is as a baffle plate and another side includes fluid tip.

The 12nd among Fig. 1 of Fig. 1 and Harris is compared, just can find out its tangible difference.The rectangle configuration of oval-shaped configuration and Harris forms contrast among Fig. 1.Yarn path 14 expands outwardly as can be seen, and its duct wall has the convex surface of mitigation, the yarn path that limited of the rectangle part of Harris in contrast, and width therebetween is consistent along whole passage basically.As can be seen from Figure 1, cross-sectional configuration also might not be how much ellipses.In fact, in these " stenosis " (nozzle and baffle plate zone of living in), two faces can be straight substantially, just are parallel basically, so that be controlled at the size at this position more accurately.The curvature (big radius just) of a mitigation is preferably arranged,, less deposition is arranged on the yarn path just because the curved surface of a mitigation is considered to better self-cleaning function can be provided.For nozzle of the present invention, its effect will report in this article, be about 1 inch in the subsequent corrosion of each curved surface on these " stenosis " both sides, and then two faces outwards open more sharp towards two ends, thereby form desired ellipse.

Same material and size can be used for each different parts of interlacing nozzle device, and other parts were then basically as in the past used, for example, described as document about nozzle, comprise mentioned above and as an example, the United States Patent (USP) the 3rd of Clendening, 261, No. 071.Prior art documents of mentioning before these particularly including in this paper as a reference, comprising the patent application of awaiting the reply of Harris, sequence number 07/267,061.

Table 1 has shown that the nozzle of the present invention (ellipse) in the application drawing 1 compares the remarkable improvement on entwining that is obtained with other existing nozzle (rectangle), wherein provide the uniformity coefficient of entwining (representing) with RPC, be on the number of times of measuring (representing), to average to calculate with N, and standard deviation (representing with SD).This test is that entwining of gained of 3 kinds of polyester yarns (showing with the total DENIER numerical table of fiber usually) made comparisons, these yarns are the speed with about 400mpm, spin under the essentially identical situation of other comparison condition except the interlacing nozzle difference, the air pressure during operation is with gauge pressure (pound/inch ²) expression.

Table 1

Yarn 150-68 75-34 75-50

Pressure 75 70 47

RPC SD N RPC SD N RPC SD N

Rectangle 5.74 0.89 338 5.48 0.51 2,311 6.30 0.81 304

Oval 4.51 0.44 128 5.08 0.47 776 5.04 0.56 290

As can be seen from Table 1, oval nozzle of the present invention provides preferably entwine (according to lower RPC and SD value representation) all the time.Lower records of values demonstrates the uniformity of entwining preferably.This point particular importance because even the high value of the RPC of a chance show that the length of entwining between the tubercle is bigger, this can cause the technologic fault in following road of yarn.The importance of evenly entwining can be as seen from Table 2, demonstrate the location parameter of entwining of spun yarn on three kinds of spinning machines in the table, except the difference of interlacing nozzle mode, other condition is similar substantially, and (rectangle) nozzle and the nozzle of the present invention (ellipse) that are used in the common usefulness of two kinds of spinning machines are made comparisons.

Table 2

Though because the RPC value is lower, and itself has had profound meaning the improvement of its irregularity of entwining, otherwise improvement meaning is bigger to oval nozzle of the present invention.The standard deviation (SD) of better (lower) of oval nozzle and the coefficient of variation (VAR) demonstrate the improvement on the uniformity.The improvement of this respect from the maximum of measuring entwine degree (MAX) value in the RPC value above 6.5(＞6.5), the RPC value surpasses 7(＞7) and the RPC value above 7.5(＞7.5) time the mensuration number, the percentage that its numerical value accounts for total mensuration number all hangs down, and then more it is obvious.Yarn any intermittence section as having than the desired higher irregularity of entwining, may also can cause the problem of next procedure really, particularly the tow fracture of wire phenomenon in the knitting stage.Through long test phase, using oval nozzle has improved more than 50% than improving with rectangle nozzle deviation, the tightness of entwining approximately improves 15%, and this has had very big improvement with regard to making knitting usefulness, and the numerical value at lacquer/fracture of wire approximately increases by 20% after measured.

Table 3 demonstrates uses oval nozzle, even less air pressure also can obtain satisfied interweaving.A very important saving can be provided like this.These mensuration are a kind of 50-34 polyester fibers to be add up to each root yarn of 576 make.

Table 3

RPC nozzle exit pressure (pound/inch ²)

Rectangle 6.26 57

Oval 5.50 52

When degree is entwined in improvement, can reduce by 10% air pressure again important and a unexpected improvement have been described aspect efficient.Also find more advantage in practice, comprise easier repiece of yarn and easier maintenance, for example easier finding with the deposition of cleaning yarn passage removal as finishing stain.This deposition is mentioned as Harris, easily in the inside of nozzle and formation on every side.These deposits depend primarily on used special material and composition thereof, and this sedimental minimizing has very big importance for practical operation.Use oval nozzle than using the rectangle nozzle, formed deposit is wanted much less.This is meaning the above-mentioned real advantage of using oval nozzle of relatively having underestimated, because two types are all passed through cleaning at the identical all after dates of operation.Sedimental minimizing and easily near the yarn path so that cleaning nozzle is the present invention surpasses two big significant advantage of previous used rectangle aggregate, thereby in fact the present invention provides better (with more calculable) to the yarn of producing from nozzle to nozzle, and the uniformity interweaves.

In No. the 3rd, 290,932, the United States Patent (USP) of Hitt, a kind of method of entwining on the device that is determined at has fast been described.This method is used to measure herein all the entwining as RPC.According to explanation, any uniformity coefficient of entwining all is according to being measured in the distance of entwining between the tubercle.This device converts these to PRC with distance between the tubercle of cm calculating, just converts the 10log10 of this numerical value to.

Claims (7)

1, a kind of follow-on interlacing nozzle, it comprises a blocking surface and a duct wall that comprises at least one conduit, the fluid that this injection catheter is used to eject one pressurization flow to described blocking surface, between described wall body and described blocking surface, form the passage of a yarns, the passage two ends dispose a yarn import and a yarn outlet respectively, it is improved to be characterised in that described blocking surface is the convex surface of a mitigation, thereby the import of described yarn path and outlet, the position that is injected into described blocking surface with respect to described fluid stream expands outwardly.

2,, it is characterized in that duct wall and stop that the both is protruding open surface according to the interlacing nozzle of claim 1.

3, according to the interlacing nozzle of claim 2, it is characterized in that many such nozzle members fit together side by side, thereby form a plurality of yarn paths between adjacent two nozzle members, the duct wall of nozzle member all is a convex surface, a blocking surface is provided on a limit, has included a described injection catheter on the another side at least.

4, the interlacing nozzle aggregate of a combined pipe formula, it is characterized in that including many nozzle members, its wall connects together and just forms many yarn paths between adjacent two nozzle member tube walls, its cross section of described nozzle member is oval-shaped basically, and include fluid conduit systems, this fluid conduit systems is positioned at one side of described yarn path, and is used for ejecting towards the relative tube wall of the adjacent nozzle that is positioned at described yarn path another side the fluid stream of pressurization.

5, a kind of improved combined pipe formula interlacing nozzle aggregate includes many nozzle members, its duct wall connects together and just forms many yarn paths between adjacent two nozzle member tube walls, described duct wall includes a plurality of fluid conduit systems, each conduit ejects one flow of pressurized fluid towards the opposite tube wall of the adjacent nozzle spare that is positioned at described yarn path another side, and it is improved to be characterised in that described yarn path expands outwardly in the lower end from described conduit at least.

6,, it is characterized in that described duct wall is a curved surface shaped, thereby described yarn path expands outwardly according to the aggregate of claim 5.

7, according to each aggregate in the claim 1 to 6, it is characterized in that described nozzle member is fixing by pressing plate, the face of pressing plate is convex-shaped surface at the contiguous place of yarn path at least.

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