JP4848354B2 - 筬 in the air jet loom - Google Patents

Description

  The present invention relates to a bag in an air jet loom.

In the air jet loom, the weft yarn is measured and stored in the weft length measuring and storing device, and the stored weft yarn is pulled out from the weft measuring and storing device by the air injection action of the main nozzle for weft insertion. The weft injected from the main nozzle for weft insertion flies through a weft guide passage formed on the front surface of the deformed kite (see, for example, Patent Document 1). The deformed kite is configured by arranging a large number of kite wings having guide holes in the weft insertion direction, and the weft guide passage is formed by a plurality of rows of guide holes. The tip of the weft insertion auxiliary nozzle (tip having the air injection hole) is moved up and down to scrape the warp forming the opening and enter the warp opening. The tip of the auxiliary nozzle for weft insertion is arranged in the vicinity of the weft guide passage, and the weft in the weft guide passage in the opening of the warp is the air injected from the air injection hole of the auxiliary nozzle for weft insertion. It is pulled by the injection action and inserted.
Japanese Patent Laid-Open No. 10-204753 JP 2001-295155 A

  When the weft insertion auxiliary nozzle scrapes the warp yarn and enters the warp opening, the tip of the weft insertion auxiliary nozzle comes into contact with the warp yarn. When the impact due to this contact is large, when a filament yarn is used for the warp, the filament yarn may be broken and fluff may occur. Further, since the pitch of the wings (interval between the thickness centers of the wings) is smaller than the thickness of the auxiliary nozzle for weft insertion in the weft insertion direction, at the time of lashing after the weft insertion is completed, the lashing direction ( In the direction perpendicular to the weft insertion direction), the warp passing through both sides of the wings facing the weft insertion auxiliary nozzle is bent between the wings and the weft insertion auxiliary nozzle. The smaller the pitch of the wings in comparison with the thickness of the auxiliary nozzle for weft insertion, the larger the bending, and the warp passing through both sides of the wings facing the auxiliary nozzle for weft insertion Single yarn breakage (fluff generation) is likely to occur with the weft insertion auxiliary nozzle.

  Such fluff impairs the air tightness of an air bag (occupant protection component in an automobile) that requires high air tightness. Therefore, it is required to prevent the occurrence of fluff, particularly when weaving a woven fabric for an air bag.

  Patent Document 2 discloses a weaving method for suppressing the generation of fluff due to warp warp of a cocoon. In paragraph [0009], a description that is not directly related to the invention of Patent Document 2 “thickening the thickness of the cocoon wing. (Reducing the porosity). However, in this description, since the thickness of all the wings is increased and the porosity is remarkably reduced, a plurality of warps are passed through the narrowed gap between adjacent wings. In the warp opening formation in such a state, entanglement of the warp yarns, which is a poor warp opening formation, easily occurs, and the poor warp opening formation causes a weft insertion error of the weft yarn. When a weft insertion error occurs, the loom is stopped due to a weft insertion error detected by the weft insertion error detection means.

  An object of this invention is to provide the wrinkle in an air jet loom excellent in suppression of fluff generation.

  In the present invention, a plurality of wings having guide holes are arranged in the weft insertion direction, and a weft guide passage is formed by a plurality of rows of the guide holes, and the wefts in the weft guide passage are in warp openings. In the air jet loom that is pulled by the air injection action of the auxiliary nozzle for weft insertion that can enter into the air jet, the auxiliary nozzle for weft insertion in the hitting direction of the reed The adjacent path expanding portion is provided on the rear side of the nozzle-corresponding wings disposed at a position corresponding to the nozzle-corresponding wings so as not to be displaced relative to the nozzle-corresponding wings. Has a thickened portion having a thickness larger than the thickness of the nozzle corresponding wing, and at least a part of the thickened portion is in a height position range in contact with the warp below the guide hole. is there.

  In the state where the weft insertion auxiliary nozzle is separating the warp yarn, the lower warp forming the warp opening corresponding to the weft insertion auxiliary nozzle corresponds to the nozzle arranged to correspond to the weft insertion auxiliary nozzle. It passes between the wings and the adjacent wings adjacent to the nozzle-compatible wings. The lower warp threaded by the weft insertion auxiliary nozzle passing between the adjacent wings adjacent to the nozzle-compatible wings and the nozzle-compatible wings passes through both sides of the thickened portion of the adjacent path expanding portion. Yes. Therefore, the impact when the tip of the weft insertion auxiliary nozzle that enters the warp opening comes into contact with the warp passing through both sides of the nozzle-corresponding wing is smaller than when there is no adjacent path expanding portion. This contributes to suppression of fluff generation.

In a preferred example, the thickened portion is also in a height position range in contact with the upper warp forming the warp opening.
Sliding with respect to the adjacent path expanding portion is smoothly performed when the warp contacting the adjacent path expanding portion moves up and down to form the opening.

In a preferred example, the guide hole is formed of an upper wall surface, a lower wall surface, and a back wall surface, and the thickened portion is provided so as to contact a lower warp on the lower side from the lower wall surface. Yes.
The lower warp and the weft insertion auxiliary nozzle are in contact with each other in the state where the lower warp is positioned below the lower wall surface of the guide hole. If there is a thickened portion, the effect of suppressing the occurrence of fluff can be obtained.

In a preferred example, the thickened portion is provided in a height position range that comes into contact only with the warp yarn on the lower side from the lower wall surface.
The portion of the adjacent path expanding portion that comes into contact with the warp passing through the upper height position range from the upper wall surface is not a thickened portion, so the adjacent path expanding portion can be reduced in weight, and the driving force of the beating drive can be reduced. Can be reduced.

In a preferred example, the adjacent path expanding portion is integrally formed with the nozzle corresponding wing so as to continue to the rear end of the nozzle corresponding wing.
A dedicated support mechanism for supporting the adjacent path expanding portion is not required.

  In a preferred example, the adjacent path expanding portion is disposed at a position spaced rearward from the nozzle corresponding wing, and the adjacent path expanding portion passes through both sides of the nozzle corresponding wing. Is in a height position range including the vertical movement position range of the warp so that it always comes into contact.

In the adjacent path expanding portion that is separate from the nozzle-corresponding wings, the degree of freedom in selecting a shape suitable for warping is increased.
In a preferred example, the thickness of the thickened portion is greater than or equal to the size of the gap between a pair of adjacent wings adjacent to the nozzle-compatible wings.

  A configuration in which the thickness of the thickened portion is equal to or larger than the gap between the pair of adjacent wings is particularly preferable for suppressing the occurrence of fluff.

  INDUSTRIAL APPLICATION This invention has the outstanding effect that the wrinkle in an air jet loom excellent in suppression of fluff generation can be provided.

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1A, the air injected from the weft insertion main nozzle 11 is directed to the weft guide passage 131 formed in the deformed rod 13 on the slay 12. The weft Y is ejected from the main nozzle 11 for weft insertion toward the weft guide passage 131 in the opening formed by the upper warp T1 and the lower warp T2.

  As shown in FIGS. 2B and 3, an air injection hole 142 is provided at the tip 141 of the weft insertion auxiliary nozzle 14, and the compressed air supplied to the weft insertion auxiliary nozzle 14 is air Jetted from the injection hole 142 into the weft guide passage 131. The weft Y in the weft guide passage 131 is pulled by the relay injection of air ejected from a plurality of rod-like weft insertion auxiliary nozzles 14. The weft Y that has been wefted is beaten to the woven cloth W1 of the woven fabric W by the deformed kite 13.

  As shown in FIG. 2 (a), the deformed kite 13 includes a lower holding frame 15, an upper holding frame 16, parent wings 17 and 18 at both left and right ends, and a plurality of flat plate shaped wings 19, 19A, 19B, 19C. The gaps between adjacent wings 19, between adjacent wings 19 and 19 B, between adjacent wings 19 and 19 C, between adjacent wings 19 A and 19 B, and between adjacent wings 19 A and 19 C are the same. It is. Warps T1, T2 [see FIG. 1 (a)] are between adjacent wings 19, between adjacent wings 19, 19B, between adjacent wings 19, 19C, between adjacent wings 19A, 19B, and adjacent A plurality of wings are passed between the wings 19A and 19C. As shown in FIG. 1 (a), a concave guide hole 20 is provided in the wing 19B constituting the deformed ridge 13. Similarly, as shown in FIG. 3, a concave guide hole 20 is provided in 19A constituting the deformed reed 13, and similar guide holes 20 are provided in the other reed wings 19 and 19C. ing. The guide hole 20 is formed by an upper wall surface 201, a back wall surface 202, and a lower wall surface 203. The guide holes 20 of the respective wings 19, 19 A, 19 B, 19 C have the same shape and the same size, and a row of these guide holes 20 forms a weft guide passage 131.

  As shown in FIGS. 1 (b) and 2 (b), the reed wing 19A has a weft insertion auxiliary nozzle 14 when viewed in a striking direction perpendicular to the direction of the weft guide passage 131 (weft insertion direction). (A position corresponding to the weft insertion auxiliary nozzle 14 in the scissor strike direction). Hereinafter, the wing 19A is referred to as a nozzle-compatible wing 19A.

  As shown in FIGS. 3 and 4 (a), the rear end 190 of the nozzle corresponding wing 19A [the left side in FIG. 3 is the front side of the loom, the right side is the rear side of the loom, and the lower side in FIG. 4 (a). The adjacent path expanding portion 21 is integrally formed on the front side of the loom and the upper side is the rear side of the loom. That is, the adjacent path expanding part 21 cannot be displaced relative to the nozzle corresponding wing 19A.

  As shown in FIG. 4A, the adjacent path expanding portion 21 includes a wedge-shaped portion 22 that increases in thickness from the front end (rear end 190 of the nozzle corresponding wing 19A) toward the rear side, and the wedge-shaped portion. And a flat plate-shaped thickened portion 23 that is continuous with 22. The side surfaces 221 and 222 of the wedge-shaped portion 22 and the side surfaces 231 and 232 of the thickened portion 23 are connected at an obtuse angle close to 180 °. The thickness D of the thickened portion 23 (the distance between the side surfaces 231 and 232 of the thickened portion 23) D is greater than the thickness d of the nozzle corresponding wing 19A. Further, the thickness D of the thickened portion 23 is determined by the gap between the pair of wings 19B and 19C adjacent to the nozzle corresponding wing 19A (the side surface 191 in the thickness direction of the pair of wings 19B and 19C adjacent to the nozzle corresponding wing 19A. , 192)) is larger than G. Hereinafter, the pair of wings 19B and 19C adjacent to the nozzle corresponding wing 19A will be referred to as adjacent wings 19B and 19C.

  As shown in FIG. 2B, the side surface 231 of the thickened portion 23 is formed on the nozzle-corresponding wing 19A when viewed in a beating direction perpendicular to the direction of the weft guide passage 131 (the weft insertion direction). The side surface 232 of the thickened portion 23 overlaps with the other adjacent wing 19C adjacent to the nozzle corresponding wing 19B.

  The position of the upper warp T1 indicated by the solid line in FIG. 3 is a position where the maximum opening of the warp is formed, and the position of the lower warp T2 indicated by the solid line is the position where the maximum opening of the warp is formed. The adjacent path expanding portion 21 is in a height position range H that always contacts both the upper warp T1 and the lower warp T2. That is, the vertical movement range of the warps T1, T2 is within the height position range H. The warp in the range between the upper warp T1 indicated by the chain line and the lower warp T2 indicated by the chain line is in contact with the side surfaces 231 and 232 of the thickened portion 23 (see FIG. 4A), and the auxiliary nozzle for weft insertion 14 end portions 141 are in a range between an upper warp T1 indicated by a chain line and a lower warp T2 indicated by a chain line. The leading edge 141 of the weft insertion auxiliary nozzle 14 scrapes the lower warp T2 and enters the warp opening when the lower warp T2 is in contact with the side surfaces 231 and 232 of the thickening portion 23.

  Chain lines S1 and S2 shown in FIG. 4A schematically show the path of the lower warp T2. FIG. 4B shows a conventional deformed kite constructed by arranging only a plurality of kites 19 at equal intervals. The chain lines U1 and U2 shown in FIG. 4B schematically show the path of the lower warp T2 that is scraped by the weft insertion auxiliary nozzle 14.

In the first embodiment, the following effects can be obtained.
(1) The weft insertion auxiliary nozzle 14 enters the openings of the warps T1 and T2 so as to separate the lower warps T2 forming the openings of the warps T1 and T2. The lower warp T2 that is scraped by the weft insertion auxiliary nozzle 14 includes a nozzle corresponding wing 19A arranged to correspond to the weft insertion auxiliary nozzle 14, and an adjacent wing 19B adjacent to the wing 19A. Pass between 19C. The lower warp T2 that is scraped by the weft insertion auxiliary nozzle 14 passing between the adjacent wings 19B and 19C adjacent to the nozzle corresponding wing 19A and the nozzle corresponding wing 19A is It passes through both sides of the thickened portion 23, and the thickness D of the thickened portion 23 is larger than the gap G between the adjacent wings 19B and 19C. Therefore, the interval between the lower warp T2 passing between the nozzle corresponding wing 19A and the adjacent wing 19B and the lower warp T2 passing between the nozzle corresponding wing 19A and the adjacent wing 19C is shown in FIG. It is expanded as indicated by chain lines S1 and S2 in a). The interval between the lower warp T2 expanded as indicated by chain lines S1 and S2 is larger than the warp interval indicated by chain lines U1 and U2 in FIG. Accordingly, the impact when the tip 141 of the weft insertion auxiliary nozzle 14 entering the openings of the warps T1, T2 comes into contact with the lower warp T2 passing through both sides of the nozzle-corresponding wing 19A is caused by the adjacent path expanding portion 21. It is smaller than the case of the conventional kite without. This contributes to suppression of fluff generation.

  (2) The adjacent path expanding portion 21 is in the height position range H that always contacts the upper warp T1 and the lower warp T2 that form the warp opening. Therefore, the warps T1 and T2 that come into contact with the side surfaces 221, 222, 231, and 232 of the adjacent path expanding portion 21 when moving up and down to form an opening slide smoothly with respect to the adjacent path expanding portion 21. To do.

  (3) Since the adjacent path expanding portion 21 is integrally formed with the nozzle corresponding wing 19A so as to be continuous with the rear end 190 of the nozzle corresponding wing 19A, a dedicated path for supporting the adjacent path expanding portion 21 is used. No support mechanism is required.

  (4) It is the thickening portion 23 in the adjacent path expanding portion 21 that widens the interval between the adjacent paths of the warp yarns passing through both sides of the nozzle corresponding wing 19A, and the thickness from the rear end 190 of the nozzle corresponding wing 19A is increased. The separation position of the portion 23 influences the bending state of the warp between the thickening portion 23 and the rear end 190 of the nozzle corresponding wing 19A, and the interval between the adjacent paths between the adjacent wings 19B and 19C. If the separation distance of the thickened portion 23 from the rear end 190 of the nozzle corresponding wing 19A is too large, the interval between adjacent paths between the adjacent wings 19B and 19C cannot be increased. On the contrary, if the separation distance of the thickened portion 23 from the rear end 190 of the nozzle corresponding wing 19A is too small, the warp warpage between the thickened portion 23 and the rear end 190 of the nozzle corresponding wing 19A increases. It is not preferable.

  In order to properly set the separation position of the thickened portion 23 from the rear end 190 of the nozzle corresponding wing 19A, the length of the wedge-shaped portion 22 in the lashing direction may be set appropriately. The configuration in which the wedge-shaped portion 22 is interposed between the thickened portion 23 and the rear end 190 of the nozzle corresponding wing 19A is to increase the interval between adjacent paths of the warp passing through both sides of the nozzle corresponding wing 19A. Is preferable.

Next, a second embodiment shown in FIGS. 5A and 5B will be described. The same reference numerals are used for the same components as those in the first embodiment, and detailed description thereof is omitted.
A bar-shaped adjacent path expanding portion 24 is erected at a position spaced rearward from the nozzle corresponding wing 19A. A wedge member 25 is fixed to the lower end portion of the adjacent path expanding portion 24. The wedge member 25 is fitted in the mounting recess 121 so as to be joined to the lower holding frame 15 of the deformed rod 13 in the mounting recess 121 on the sley 12. A screw 26 passed from the lower surface of the sley 12 is screwed into the wedge member 25, and the wedge member 25 is fixed in the mounting recess 121 by tightening the screw 26. That is, the adjacent path expanding portion 24 is fixed to the slay 12 by tightening the screw 26, and the adjacent path expanding portion 24 cannot be displaced relative to the nozzle corresponding wing 19A. The cross-sectional shape of the adjacent path expanding portion 24 is an elliptical shape.

  The maximum thickness D1 in the weft insertion direction of the adjacent path expanding portion 24 (the length of the minor axis of the cross-sectional elliptical shape of the adjacent path expanding portion 24) is larger than the gap G between the adjacent wings 19B and 19C. . The warps T1 and T2 shown in FIG. 6 are at positions where the maximum opening of the warp is formed. The height position range H of the adjacent path expanding portion 24 extends over the height position range including the vertical movement position range of the warps T1 and T2, and the warps T1 and T2 passing through both sides of the nozzle corresponding wings 19A are adjacent path expanded. It is always in contact with the peripheral surface of the portion 24.

  In the second embodiment, the same effect as the items (1) and (2) in the first embodiment can be obtained. Further, since the adjacent path expanding portion 24 is a separate body from the nozzle-corresponding wings 19A, there is a high degree of freedom in selecting a shape suitable for the warp.

Next, a third embodiment of FIG. 6 will be described. The apparatus configuration is the same as that of the first embodiment, the same reference numerals are used for the same components as those of the first embodiment, and detailed description thereof is omitted.
The thickened portion 23 of the adjacent path expanding portion 21A is in contact with only the lower warp T2 below the lower wall surface 203 of the guide hole 20, and the adjacent path expanding portion 21A is intermittent with the upper warp T1. It is provided in the height position range H1 in contact.

  In the third embodiment, the same effects as the items (1), (3), and (4) in the first embodiment can be obtained. Furthermore, compared with the first embodiment, the adjacent path expanding portion 21A becomes lighter, so that it is possible to reduce the load of the driving force.

Next, a fourth embodiment shown in FIGS. 7A and 7B will be described. The same reference numerals are used for the same components as those in the second embodiment, and detailed description thereof is omitted.
The rod-like adjacent path expanding portion 24 is attached to the nozzle corresponding wing 19 </ b> A using a pair of attachment fittings 27. The mounting bracket 27 includes a ring portion 271 fitted and fixed to the adjacent path expanding portion 24 and a bifurcated insertion portion 274 having a pair of insertion pieces 272 and 273. The insertion piece 272 is inserted between the nozzle corresponding wing 19A and the adjacent wing 19B, and the insertion piece 273 is inserted between the nozzle corresponding wing 19A and the adjacent wing 19C. As a result, the adjacent path expanding portion 24 cannot be displaced relative to the nozzle corresponding wing 19A.

In the fourth embodiment, the same effect as in the second embodiment can be obtained.
In the present invention, the following embodiments are also possible.
In the first embodiment, the adjacent path expanding portion 21 may be formed separately from the nozzle corresponding wing 19A.

In the first embodiment, the thickness D of the thickening portion 23 may be larger than the thickness d of the nozzle corresponding wing 19A and not more than the size of the gap G between the adjacent wings 19B and 19C.
In the third embodiment, the thickened portion 23 of the adjacent path expanding portion 21 </ b> A may be configured to contact the lower warp T <b> 2 above the lower wall surface 203 of the guide hole 20.

1 shows a first embodiment, and (a) is a partially omitted perspective view. FIG. (B) is a partial enlarged perspective view. (A) is a partially omitted front view of the deformed rod. (B) is a partial enlarged front view. FIG. (A) is the AA expanded sectional view of FIG. (B) is the elements on larger scale of the conventional deformed bag. A 2nd embodiment is shown and (a) is a sectional side view. (B) is the BB expanded sectional view of Fig.5 (a). The fragmentary sectional side view which shows 3rd Embodiment. A 4th embodiment is shown and (a) is a fragmentary sectional side view. (B) is the CC sectional view taken on the line of FIG. 7 (a).

Explanation of symbols

  13 ... Deformation. 131 ... Weft guide passage. 14 ... Auxiliary nozzle for weft insertion. 19 ... Tsubasa. 19A: Nowaba compatible nozzle. 19B, 19C. 191,192 ... Thickened part. 190: Rear end. 20 ... Guide hole. 201 ... Upper wall surface. 202 ... The back wall surface. 203 ... Lower wall surface. 21, 21 </ b> A, 24. 23 ... Thickened part. Y ... Weft. T1, T2 ... Warp. D, D1... Thickness. d: Thickness. G ... Gap. H, H1... Height position range.

Claims (7)

A plurality of rows of wings having guide holes are provided in the weft insertion direction, and a plurality of the guide hole rows form a weft guide passage, and the wefts in the weft guide passage can enter the warp opening. In the ridge in the air jet loom that is pulled by the air injection action of the weft insertion auxiliary nozzle,
An adjacent path expanding portion is provided on the rear side of the nozzle corresponding wings disposed at a position corresponding to the weft insertion auxiliary nozzle in the lashing direction of the ridges so as not to be displaced relative to the nozzle corresponding wings. The adjacent path expanding portion has a thickened portion having a thickness in the weft insertion direction larger than the thickness of the nozzle-corresponding wing, and at least a part of the thickened portion is more than the guide hole. Wrinkles in an air jet loom in the height position range that contacts the lower warp.   The wrinkle in the air jet loom according to claim 1, wherein the thickened portion is also in a height position range in contact with an upper warp forming the warp opening.   The said guide hole is formed from the upper wall surface, the lower wall surface, and the back wall surface, The said thickening part is provided so that the lower warp which exists in the lower side from the said lower wall surface may be contacted.筬 in the air jet loom described.   The said thickening part is a ridge in the air jet loom of Claim 3 provided in the height position range which contacts only the warp yarn below from the said lower wall surface.   5. The air jet loom according to claim 1, wherein the adjacent path expanding portion is integrally formed with the nozzle corresponding wing so as to be continuous with a rear end of the nozzle corresponding wing. 6.筬.   The adjacent path expanding portion is disposed at a position spaced rearward from the nozzle-corresponding wings, and the adjacent path expanding portion is always in contact with the warp passing through both sides of the nozzle-corresponding wings. The wrinkle in the air jet loom according to any one of claims 1 to 4, which is in a height position range including a vertical movement position range of the warp.   The ridge in the air jet loom according to any one of claims 1 to 6, wherein a thickness of the thickened portion is equal to or larger than a size of a gap between a pair of adjacent ridges adjacent to the nozzle corresponding ridge.

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