EP2628830A1 - Yarn processing device - Google Patents
Yarn processing device Download PDFInfo
- Publication number
- EP2628830A1 EP2628830A1 EP11832363.3A EP11832363A EP2628830A1 EP 2628830 A1 EP2628830 A1 EP 2628830A1 EP 11832363 A EP11832363 A EP 11832363A EP 2628830 A1 EP2628830 A1 EP 2628830A1
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- EP
- European Patent Office
- Prior art keywords
- yarn
- nozzle
- collision body
- processing device
- collision
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
Definitions
- the present invention relates to a yarn processing device that imparts loftiness to yarns by ejecting fluid onto the yarns and forming entanglements, loops, or the like.
- a known yarn processing device imparts loftiness to a yarn constituted by filaments made of synthetic resin or the like by ejecting fluid onto the yarn and forming entanglements, loops or the like on the filaments.
- Patent Literatures 1 and 2 discloses a yarn processing device including a yarn path having a yarn introducing part and a yarn ejecting part, a nozzle having an air injection hole that ejects compressed air into the yarn path, and a spherical collision body arranged to oppose a yarn ejecting part of the nozzle.
- a yarn is introduced from the yarn introducing part, passes through the yarn path to which air is ejected, and is discharged from the yarn ejecting part.
- the air ejected from the yarn ejecting part collides the spherical collision body and flows along the surface thereof.
- the yarn is ejected through a gap between the yarn ejecting part and the collision body.
- loops, entanglements or the like are formed on the filaments by the airflow in the yarn ejecting part, with the result that loftiness is imparted to the yarn.
- An object of the present invention is to provide a yarn processing device with high yarn processing capability.
- a yarn processing device includes: a nozzle including a yarn path constituted by a yarn introducing part and a yarn ejecting part and a fluid injection hole configured to eject fluid into the yarn path; and a collision body having a surface which opposes, over a gap, a leading end face of the yarn ejecting part on which face an outlet is formed, on the surface of the collision body which surface opposes the leading end face of the yarn ejecting part, an opposing part opposing the outlet being formed to have a concave shape.
- the opposing part of the collision body opposing the outlet of the nozzle has a concave shape
- a large space is formed between the yarn ejecting part of the nozzle and the collision body, and this facilitates the generation of turbulence of the flow of the fluid in the space.
- the yarn processing capability is improved.
- the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved.
- the yarn processing device of the first aspect is arranged so that an inner surface of the concave opposing part of the collision body is formed by a curved surface.
- the fluid ejected from the yarn ejecting part together with the yarn flows along the inner surface of the inner space of the opposing part. This restrains the fluid from being locally stagnant, and hence the generation of loops and entanglements in the filaments is further facilitated and the yarn processing capability is improved.
- the yarn processing device of the first or second aspect is arranged so that the opposing part of the collision body is formed to be deepest at a central part.
- the yarn ejected from the yarn ejecting part converges on and collides the deepest part of the concave portion. Because the yarn intensively collides a part of the collision body, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved.
- the yarn processing device of the first is arranged so that the opposing part of the collision body is circular-arc-shaped or partial-elliptical-shaped in cross section.
- the inner surface of the opposing part is curved and deepest at the central part thereof. Therefore, as described in the second and third aspects, the fluid is hardly locally stagnant and the generation of loops and entanglements in the filaments is further facilitated and stably done, with the result that the yarn processing capability is further improved.
- the yarn processing device of any one of the first to fourth aspects is arranged so that, on the opposing part of the collision body, a concave portion and a flat portion, which is in parallel to the leading end face of the yarn ejecting part including the outlet and surrounds the concave portion, are formed.
- the periphery of the part is sharp.
- processing variation of the shape of the periphery of the collision body is not negligible and small cracks may be formed at the periphery, and the yarn processing is significantly influenced.
- variations in the tension of the yarn and the occurrence of fluffs are caused.
- the opposing part of the collision body has the concave portion and the flat portion surrounding the concave portion, processing variation of the shape of the periphery of the collision body is small and cracks hardly occur, with the result that the yarn processing is stably done.
- the yarn processing device further includes a nozzle holder that holds the nozzle, the collision body being attached to the nozzle holder, and the nozzle holder being provided with a yarn guide which is configured to guide a yarn having passed through a gap between the yarn ejecting part of the nozzle and the collision body.
- a yarn guide is preferably provided on the downstream of the nozzle.
- the tension of the yarn varies in accordance with the position of the nozzle with respect to the yarn guide, when a yarn guide is provided independently of the yarn processing device, it is necessary to conduct a tiresome operation to suitably adjust the tension of the yarn, that is, an operation to adjust the position of the yarn guide with respect to the yarn processing device (i.e., the nozzle) after the yarn processing device is installed.
- the nozzle holder including the nozzle and the collision body further includes the yarn guide and hence the nozzle, the collision body, and the yarn guide are integrated, the position of the yarn guide is automatically determined when the yarn processing device is installed at a predetermined position, and it is therefore unnecessary to adjust the position of the yarn guide.
- the opposing part of the collision body opposing the outlet of the nozzle has a concave shape
- a large space is provided between the yarn ejecting part of the nozzle and the collision body, and the turbulence of the flow of the fluid in the space is facilitated.
- the turbulence of the flow of the fluid in the space facilitates the formation of loops and entanglements in the filaments ejected from the yarn ejecting part, and the yarn processing capability is improved.
- the yarn processing capability is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved.
- FIG. 1 is a front elevation of a yarn processing device of the present embodiment
- FIG. 2 is a left side view of the yarn processing device
- FIG. 3 is a cross section of a part of the yarn processing device shown in FIG. 1
- FIG. 4(a) is an enlarged view of the nozzle and the collision body shown in FIG. 3
- FIG. 4 (b) is a right side view of the collision body shown in FIG. 4(a) .
- the directions, i.e., upward, downward, leftward, and rightward in FIG. 1 and FIG. 3 are used throughout the descriptions below.
- the yarn processing device 1 includes a nozzle 2, a nozzle holder 3 holding the nozzle 2, and a collision body 4 provided at the nozzle holder 3.
- the nozzle 2 is a cylindrical component made of a hard material such as metal and ceramics, and is provided with, at one end, a flange portion 2a protruding in radial directions. Inside the nozzle 2 is provided a yarn path 10 that extends in an axial direction of the cylindrical nozzle 2.
- the yarn path 10 includes a yarn introducing part 11 formed on the flange portion 2a side (i.e., right side) of the nozzle 2, a yarn ejecting part 12 formed on the side opposite to the flange portions 2a (i.e., left side) of the nozzle 2, and an air introducing part 13 connecting the yarn introducing part 11 with the yarn ejecting part 12.
- an inlet 11a is formed to introduce a yarn 31.
- the yarn introducing part 11 is formed such that the internal diameter thereof reduces from the inlet 11a side to the leading end side (i.e., to the left side in the figure).
- an outlet 12a is formed at the left end face of the nozzle 2 on the side opposite to the flange portion 2a to eject the yarn 31 having been introduced into the yarn path 10.
- the yarn ejecting part 12 is formed so that the internal diameter thereof increases toward the outlet 12a.
- the diameter-decreasing yarn introducing part 11 and the diameter-increasing yarn ejecting part 12 are, for example, tapered in shape or horn-shaped such that the degree of widening (curvature) at the peripheral part is larger than that of the tapered shape.
- the yarn introducing part 11 is horn-shaped whereas the yarn ejecting part 12 is tapered.
- an air injection hole 14 (fluid injection hole) which is open to an air introducing part 13 of the yarn path 10. While FIG. 4(a) shows only one air injection hole 14, in reality a plurality of (three for example) air injection holes 14 are provided at equal intervals along the circumference of the nozzle 2.
- the air injection hole 14 extends to incline toward the leading end side (left side) of the yarn path 10 with respect to the radial directions of the nozzle 2 (i.e., the directions orthogonal to the yarn path 10), with the result that strong leftward airflow is generated when air is ejected into the yarn path 10.
- the nozzle holder 3 will be described. As shown in FIG. 1 to FIG. 3 , the nozzle holder 3 is rectangular parallele piped and slightly long in the vertical direction. In the upper part of this nozzle holder 3, an attaching hole 20 is formed to horizontally penetrate the nozzle holder 3. To this attaching hole 20, the above-described nozzle 2 is inserted. In this regard, the diameter of the attaching hole 20 is arranged to be smaller than the outer diameter of the flange portion 2a of the nozzle 2.
- the flange portion 2a provided at the right end portion of the nozzle 2 contacts the right side of the nozzle holder 3 without being inserted into the attaching hole 20, with the result that the nozzle 2 is positioned with respect to the nozzle holder 3. Furthermore, as shown in FIG. 1 , to the nozzle holder 3 is attached a regulator 22 that prevents the nozzle 2 inserted into the attaching hole 20 from jutting out rightward.
- a vertically-extending air supply hole 21 Inside the nozzle holder 3 is formed a vertically-extending air supply hole 21. This air supply hole 21 is connected to an unillustrated air supply source.
- the air injection hole 14 formed in the nozzle 2 is connected to the air supply hole 21 and the air supplied from the air supply hole 21 is ejected from the air injection hole 14 to the yarn path 10.
- the collision body 4 is a substantially disc-shaped member and is made of a hard material such as metal and ceramics. This collision body 4 opposes, over a small gap, the left end face of the nozzle 2 attached to the nozzle holder 3 (i,e., the leading end face of the yarn ejecting part 12 on which face the outlet 12a is formed).
- a concave portion 4a is formed at a central part to oppose the outlet 12a.
- the inner surface of this concave portion 4a is arranged to be circular-arc-shaped in a cross section taken at the plane including the central axis of the nozzle 2. Furthermore, the concave portion 4a is surrounded by a flat portion 4b which has a flat surface in parallel to the leading end face of the yarn ejecting part 12.
- an attaching base member 23 is fixed to the lower left side of the nozzle holder 3 by a bolt or the like, and a lower part of a block-shaped holder 24 is connected to the attaching base member 23 to be rotatable along the vertical surface. Furthermore, to the holder 24 is fixed an end of a connection rod 25, whereas the other end of the connection rod 25 is fixed to the collision body 4. According to this arrangement, as indicated by two-dot chain lines in FIG.
- the collision body 4 when the holder 24 is rotated with respect to the attaching base member 23, the collision body 4 is rotated together with the holder 24.
- the collision body 4 is movable between the position where the collision body 4 opposes the outlet 12a of the nozzle holder (i.e., the position indicated by the full lines) and the retracted position where the collision body 4 is distant from the outlet 12a (i.e., the position indicated by the two-dot chain lines). With this, the yarn is easily introduced into the nozzle 2 by moving the collision body 4 to the retracted position.
- a yarn guide is preferably provided on the downstream of the nozzle 2.
- the tension of the yarn on the nozzle downstream side is varied in accordance with the position of the yarn guide with respect to the nozzle 2.
- the present embodiment is arranged so that a yarn guide 26 for guiding the yarn ejected from the nozzle 2 is attached to the attaching base member 23 fixed to the nozzle holder 3, via an attaching member 27. That is to say, the yarn guide 26 is further attached to the nozzle holder 3 having the nozzle 2 and the collision body 4, and the nozzle 2, the collision body 4, and the yarn guide 26 are integrated.
- the yarn introduced into the nozzle 2 from the right side in FIG. 1 and ejected from the yarn ejecting part 12 passes through the yarn guide on the viewer side in FIG. 1 (on the right side in FIG. 2 ) and is then guided upward.
- the position of the yarn guide 26 is automatically determined when the yarn processing device 1 is installed at a predetermined position, and it is therefore unnecessary to adjust the position of the yarn guide 26 with respect to the nozzle 2.
- the air ejected into the air introducing part 13 is discharged from the yarn ejecting part 12, and collides the collision body 4 which is provided to oppose the outlet 12a.
- the yarn 31 is ejected through the gap between the collision body 4 and the yarn ejecting part 12.
- the filaments constituting the yarn 31 are unwound on account of strong airflow in the yarn ejecting part 12, and loops and entanglements are formed as each filament severely vibrates. As such, loftiness is imparted to the yarn 31.
- the concave portion 4a is formed on the surface of the collision body 4 which surface opposes the outlet 12a. For this reason, a large space is provided between the yarn ejecting part 12 of the nozzle 2 and the collision body 4, and this facilitates the generation of turbulence of airflow. Because the generation of loops and entanglements in the filaments ejected from the yarn ejecting part 12 is accelerated on account of the turbulence of airflow, the yarn processing capability is improved. When the processing capability of the yarn processing device 1 is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved and an amount of air required to produce a unit length of yarn is reduced.
- the concave portion 4a of the collision body 4 is formed to have a curved surface which is circular-arc-shaped in cross section.
- the concave portion 4a has such a curved surface, the air ejected from the yarn ejecting part 12 along with the yarn flows in the space in the concave portion 4a along the inner surface thereof. This restrains the air from being locally stagnant, and the formation of loops and entanglements on the filaments is further facilitated.
- the concave portion 4a which is circular-arc-shaped in cross section is deepest at the central part (where the central axis of the nozzle 2 passes through), and the yarn ejected from the yarn ejecting part 12 converges on and collides the deepest part of the concave portion 4a. Because the yarn intensively collides a part of the collision body 4, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved.
- the concave portion 4a and the flat portion 4b surrounding the concave portion are formed at the opposing part of the collision body 4 which part opposes the outlet 12a.
- the yarn processing is stable in this case, because, as compared to a case where the entirety of the opposing part of the collision body 4 is formed to have a concave shape and the edge (outer periphery) is sharp (as in a later-described modification shown in FIG. 5(e) ), processing variation of the shape of the edge (outer periphery) of the opposing part of the collision body 4 is restrained, and the formation of cracks is restrained.
- the outer diameter of the collision body 4 is D
- the diameter of the concave portion 4a is d
- the width of the flat portion 4b is t
- the width t of the flat portion 4b preferably falls within the range of 0 ⁇ t ⁇ 5(mm).
- the concave part of the collision body 4 opposing the outlet 12a of the nozzle 2 may not be circular-arc-shaped in cross section as in the embodiment above.
- the cross section of the concave portion 4a may be (a) partial elliptical, (b) U-shaped, (c) trapezoidal, or (d) conical, for example.
- the partial elliptical concave portion 4a shown in FIG. 5(a) is, in the same manner as the circular-arc-shaped concave portion of the embodiment above (see FIG. 4 ), has a curved inner surface.
- the air flows along the inner surface and hardly locally stagnant, and hence the formation of loops and entanglements on the filaments is facilitated.
- the yarn intensively collides the deepest part of the collision body 4, and hence the subsequent yarn processing is stably carried out.
- the concave portion 4a is formed only at a part of the surface of the collision body 4 which surface is on the outlet 12a side and the concave portion 4a is surrounded by the flat portion 4b
- the entirety of the surface of the collision body 4 on the outlet 12a side may be a concave portion 4a as shown in FIG. 5(e) .
- the nozzle 2 may be shaped differently from the shape of the embodiment above shown in FIG. 4 (a) .
- the yarn introducing part 11 is tapered whereas the yarn ejecting part 12 is horn-shaped.
- the yarn introducing part 11 may have a straight shape with constant diameter.
- the collision body 4 While in the embodiment above the collision body 4 is arranged to be movable (rotatable) with respect to the nozzle holder 3, the collision body 4 may be fixed with respect to the nozzle holder 3.
- the nozzle No.1 and the nozzle No.2 in Table 1 are nozzles shown in the left column (1) in FIG. 7 .
- the nozzle No.3 and the nozzle No.4 in Table 2 are nozzles shown in the right column (2) in FIG. 7 .
- the nozzle No.1 is different from the nozzle No.2 in the diameter of the air injection hole, i.e., they are slightly different from each other in the thickness range of the yarn (the nozzle No.1 is for narrow yarns whereas the nozzle No.2 is for thick yarns).
- the nozzle No.3 and the nozzle No.4 are slightly different from each other in the thickness range of the yarn.
- Table 7 the result of measurement of the yarn tension on the discharging side when the thickness of nylon yarn (PA6) was 140 denier is shown in Table 7.
- Table 3 to Table 7 a nozzle suitable for the thickness of the yarn was appropriately selected from the four types of nozzles shown in Table 1.
- the yarn processing capability is typically improved when the yarn speed is low, because the yarn tension on the discharging side is high.
- the yarn speed must be decreased to achieve a certain level of processing quality (i.e., a certain level of yarn tension) .
- the concave collision body of the present invention when used, yarns having the same or improved quality as those produced by spherical or planer collision bodies are produced at a higher yarn speed, and hence the productivity is improved.
- the yarn processing capabilities of the concave collision body were examined with different concave portion diameters (d in FIG. 7 ).
- three types of collision bodies with the diameters of the concave portions of 11mm, 20mm, and 24mm shown in Table 2 and the planar collision body of the comparative example were used, and the thickness of the yarn were changed.
- the yarn tensions of yarns that were made of PET and were 150 denier, 300 denier, and 600 denier in thickness were measured on the discharging side. The results are shown in Table 8 to Table 10.
- the yarn tension was high as compared to the case of the planar collision body when the diameter of the concave portion fell within the range of 11mm to 24mm, and the processing capability was improved.
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Abstract
Description
- The present invention relates to a yarn processing device that imparts loftiness to yarns by ejecting fluid onto the yarns and forming entanglements, loops, or the like.
- A known yarn processing device imparts loftiness to a yarn constituted by filaments made of synthetic resin or the like by ejecting fluid onto the yarn and forming entanglements, loops or the like on the filaments.
- Each of
Patent Literatures - In the yarn processing devices of
Patent Literatures -
- Patent Literature 1: PCT application entering national phase in Japan No.
2000-514509 FIG. 5 ,FIG. 6 , and FIG. 8) - Patent Literature 2: Japanese unexamined patent publication No.
2000-303280 - However, there is still a room for improvement in the conventional yarn processing device including the spherical collision body, because occasionally the loftiness-imparting process is improper. The inventors diligently studied to solve the problem above, and have consequently found that the shape of the collision body significantly influences on the processing capability of the yarn processing device, and the processing capability is improved by modifying the shape of the collision body.
- An object of the present invention is to provide a yarn processing device with high yarn processing capability. Solution to Problem
- A yarn processing device according to the first aspect of the invention includes: a nozzle including a yarn path constituted by a yarn introducing part and a yarn ejecting part and a fluid injection hole configured to eject fluid into the yarn path; and a collision body having a surface which opposes, over a gap, a leading end face of the yarn ejecting part on which face an outlet is formed, on the surface of the collision body which surface opposes the leading end face of the yarn ejecting part, an opposing part opposing the outlet being formed to have a concave shape.
- According to the present invention, because the opposing part of the collision body opposing the outlet of the nozzle has a concave shape, a large space is formed between the yarn ejecting part of the nozzle and the collision body, and this facilitates the generation of turbulence of the flow of the fluid in the space. With this, because the generation of loops and entanglements in the filaments ejected from the yarn ejecting part is facilitated by the turbulence of the flow of the fluid in the space, the yarn processing capability is improved. When the yarn processing capability is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved.
- According to the second aspect, the yarn processing device of the first aspect is arranged so that an inner surface of the concave opposing part of the collision body is formed by a curved surface.
- When the inner surface of the concave opposing part of the collision body is formed by a curved surface, the fluid ejected from the yarn ejecting part together with the yarn flows along the inner surface of the inner space of the opposing part. This restrains the fluid from being locally stagnant, and hence the generation of loops and entanglements in the filaments is further facilitated and the yarn processing capability is improved.
- According to the third aspect, the yarn processing device of the first or second aspect is arranged so that the opposing part of the collision body is formed to be deepest at a central part.
- When the opposing part of the collision body is deepest at its central part, the yarn ejected from the yarn ejecting part converges on and collides the deepest part of the concave portion. Because the yarn intensively collides a part of the collision body, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved.
- According to the fourth aspect, the yarn processing device of the first is arranged so that the opposing part of the collision body is circular-arc-shaped or partial-elliptical-shaped in cross section.
- When the opposing part of the collision body is circular-arc-shaped or partial-elliptical-shaped in cross section, the inner surface of the opposing part is curved and deepest at the central part thereof. Therefore, as described in the second and third aspects, the fluid is hardly locally stagnant and the generation of loops and entanglements in the filaments is further facilitated and stably done, with the result that the yarn processing capability is further improved.
- According to the fifth aspect, the yarn processing device of any one of the first to fourth aspects is arranged so that, on the opposing part of the collision body, a concave portion and a flat portion, which is in parallel to the leading end face of the yarn ejecting part including the outlet and surrounds the concave portion, are formed.
- When the entirety of the opposing part of the collision body opposing the outlet has a concave shape, the periphery of the part is sharp. In such a case, processing variation of the shape of the periphery of the collision body is not negligible and small cracks may be formed at the periphery, and the yarn processing is significantly influenced. Furthermore, variations in the tension of the yarn and the occurrence of fluffs are caused. In this regard, because in the present invention the opposing part of the collision body has the concave portion and the flat portion surrounding the concave portion, processing variation of the shape of the periphery of the collision body is small and cracks hardly occur, with the result that the yarn processing is stably done.
- According to the sixth aspect, the yarn processing device according to any one of first to fifth aspects further includes a nozzle holder that holds the nozzle, the collision body being attached to the nozzle holder, and the nozzle holder being provided with a yarn guide which is configured to guide a yarn having passed through a gap between the yarn ejecting part of the nozzle and the collision body.
- To stabilize the running of the yarn ejected from the yarn ejecting part of the nozzle, a yarn guide is preferably provided on the downstream of the nozzle. In this regard, because the tension of the yarn varies in accordance with the position of the nozzle with respect to the yarn guide, when a yarn guide is provided independently of the yarn processing device, it is necessary to conduct a tiresome operation to suitably adjust the tension of the yarn, that is, an operation to adjust the position of the yarn guide with respect to the yarn processing device (i.e., the nozzle) after the yarn processing device is installed. Because in the present invention the nozzle holder including the nozzle and the collision body further includes the yarn guide and hence the nozzle, the collision body, and the yarn guide are integrated, the position of the yarn guide is automatically determined when the yarn processing device is installed at a predetermined position, and it is therefore unnecessary to adjust the position of the yarn guide.
- According to the present invention, because the opposing part of the collision body opposing the outlet of the nozzle has a concave shape, a large space is provided between the yarn ejecting part of the nozzle and the collision body, and the turbulence of the flow of the fluid in the space is facilitated. For this reason, the turbulence of the flow of the fluid in the space facilitates the formation of loops and entanglements in the filaments ejected from the yarn ejecting part, and the yarn processing capability is improved. When the yarn processing capability is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved. Brief Description of Drawings
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FIG. 1 is a front elevation of a yarn processing device according to an embodiment of the present invention. -
FIG. 2 is a left side view of the yarn processing device shown inFIG. 1 . -
FIG. 3 is a cross section of a part of the yarn processing device shown inFIG. 1 . -
FIG. 4(a) is an enlarged view of the nozzle and the collision body shown inFIG. 3 , whereasFIG. 4(b) is a right side view of the collision body shown inFIG. 4(a) . -
FIG. 5 is a cross section of collision bodies of a modification. -
FIG. 6 is a cross section of nozzles and collision bodies of another modification. -
FIG. 7 is a cross section of nozzles and collision bodies in examples and comparative examples. - Now, an embodiment of the present invention will be described.
FIG. 1 is a front elevation of a yarn processing device of the present embodiment,FIG. 2 is a left side view of the yarn processing device, andFIG. 3 is a cross section of a part of the yarn processing device shown inFIG. 1 .FIG. 4(a) is an enlarged view of the nozzle and the collision body shown inFIG. 3 , whereasFIG. 4 (b) is a right side view of the collision body shown inFIG. 4(a) . Note that, hereinafter, the directions, i.e., upward, downward, leftward, and rightward inFIG. 1 andFIG. 3 are used throughout the descriptions below. As shown inFIG. 1 to FIG. 3 , theyarn processing device 1 includes anozzle 2, anozzle holder 3 holding thenozzle 2, and acollision body 4 provided at thenozzle holder 3. - First of all, the
nozzle 2 will be described. As shown inFIG. 3 andFIG. 4 (a), thenozzle 2 is a cylindrical component made of a hard material such as metal and ceramics, and is provided with, at one end, aflange portion 2a protruding in radial directions. Inside thenozzle 2 is provided ayarn path 10 that extends in an axial direction of thecylindrical nozzle 2. Theyarn path 10 includes ayarn introducing part 11 formed on theflange portion 2a side (i.e., right side) of thenozzle 2, ayarn ejecting part 12 formed on the side opposite to theflange portions 2a (i.e., left side) of thenozzle 2, and anair introducing part 13 connecting theyarn introducing part 11 with theyarn ejecting part 12. - At the end face of the
flange portion 2a at the right end of thenozzle 2, aninlet 11a is formed to introduce ayarn 31. Theyarn introducing part 11 is formed such that the internal diameter thereof reduces from theinlet 11a side to the leading end side (i.e., to the left side in the figure). On the other hand, at the left end face of thenozzle 2 on the side opposite to theflange portion 2a, anoutlet 12a is formed to eject theyarn 31 having been introduced into theyarn path 10. Theyarn ejecting part 12 is formed so that the internal diameter thereof increases toward theoutlet 12a. The diameter-decreasingyarn introducing part 11 and the diameter-increasingyarn ejecting part 12 are, for example, tapered in shape or horn-shaped such that the degree of widening (curvature) at the peripheral part is larger than that of the tapered shape. For example, in the present embodiment, theyarn introducing part 11 is horn-shaped whereas theyarn ejecting part 12 is tapered. - At an axially central part of the
nozzle 2 is formed an air injection hole 14 (fluid injection hole) which is open to anair introducing part 13 of theyarn path 10. WhileFIG. 4(a) shows only oneair injection hole 14, in reality a plurality of (three for example) air injection holes 14 are provided at equal intervals along the circumference of thenozzle 2. Theair injection hole 14 extends to incline toward the leading end side (left side) of theyarn path 10 with respect to the radial directions of the nozzle 2 (i.e., the directions orthogonal to the yarn path 10), with the result that strong leftward airflow is generated when air is ejected into theyarn path 10. - Now, the
nozzle holder 3 will be described. As shown inFIG. 1 to FIG. 3 , thenozzle holder 3 is rectangular parallele piped and slightly long in the vertical direction. In the upper part of thisnozzle holder 3, an attachinghole 20 is formed to horizontally penetrate thenozzle holder 3. To this attachinghole 20, the above-describednozzle 2 is inserted. In this regard, the diameter of the attachinghole 20 is arranged to be smaller than the outer diameter of theflange portion 2a of thenozzle 2. With this arrangement, while the left end portion of thenozzle 2 is inserted into and attached to the attachinghole 20 from the right opening, theflange portion 2a provided at the right end portion of thenozzle 2 contacts the right side of thenozzle holder 3 without being inserted into the attachinghole 20, with the result that thenozzle 2 is positioned with respect to thenozzle holder 3. Furthermore, as shown inFIG. 1 , to thenozzle holder 3 is attached aregulator 22 that prevents thenozzle 2 inserted into the attachinghole 20 from jutting out rightward. - Inside the
nozzle holder 3 is formed a vertically-extendingair supply hole 21. Thisair supply hole 21 is connected to an unillustrated air supply source. When thenozzle 2 is attached to the attachinghole 20 of thenozzle holder 3, theair injection hole 14 formed in thenozzle 2 is connected to theair supply hole 21 and the air supplied from theair supply hole 21 is ejected from theair injection hole 14 to theyarn path 10. - Now, the
collision body 4 will be described. As shown inFIG. 3 andFIG. 4 , thecollision body 4 is a substantially disc-shaped member and is made of a hard material such as metal and ceramics. Thiscollision body 4 opposes, over a small gap, the left end face of thenozzle 2 attached to the nozzle holder 3 (i,e., the leading end face of theyarn ejecting part 12 on which face theoutlet 12a is formed). - In the right face of the
collision body 4 which face opposes the left end face of thenozzle 2, aconcave portion 4a is formed at a central part to oppose theoutlet 12a. The inner surface of thisconcave portion 4a is arranged to be circular-arc-shaped in a cross section taken at the plane including the central axis of thenozzle 2. Furthermore, theconcave portion 4a is surrounded by aflat portion 4b which has a flat surface in parallel to the leading end face of theyarn ejecting part 12. - While the arrangement to support the
collision body 4 to oppose theoutlet 12a of thenozzle 2 is not limited to any particular arrangement, the present embodiment employs the following arrangement as an example. First of all, as shown inFIG. 1 , an attachingbase member 23 is fixed to the lower left side of thenozzle holder 3 by a bolt or the like, and a lower part of a block-shapedholder 24 is connected to the attachingbase member 23 to be rotatable along the vertical surface. Furthermore, to theholder 24 is fixed an end of aconnection rod 25, whereas the other end of theconnection rod 25 is fixed to thecollision body 4. According to this arrangement, as indicated by two-dot chain lines inFIG. 3 , when theholder 24 is rotated with respect to the attachingbase member 23, thecollision body 4 is rotated together with theholder 24. Thecollision body 4 is movable between the position where thecollision body 4 opposes theoutlet 12a of the nozzle holder (i.e., the position indicated by the full lines) and the retracted position where thecollision body 4 is distant from theoutlet 12a (i.e., the position indicated by the two-dot chain lines). With this, the yarn is easily introduced into thenozzle 2 by moving thecollision body 4 to the retracted position. - To stabilize the running of the
yarn 31 after being ejected from theyarn ejecting part 12 of thenozzle 2, a yarn guide is preferably provided on the downstream of thenozzle 2. In this regard, the tension of the yarn on the nozzle downstream side is varied in accordance with the position of the yarn guide with respect to thenozzle 2. For this reason, when a yarn guide is provided independently of theyarn processing device 1, it is necessary to conduct a tiresome operation to suitably adjust the tension of the yarn, that is, an operation to adjust the position of the yarn guide with respect to the yarn processing device 1 (i.e., the nozzle 2) after the yarn processing device is installed. - In consideration of this point, as shown in
FIG. 1 andFIG. 2 , the present embodiment is arranged so that ayarn guide 26 for guiding the yarn ejected from thenozzle 2 is attached to the attachingbase member 23 fixed to thenozzle holder 3, via an attachingmember 27. That is to say, theyarn guide 26 is further attached to thenozzle holder 3 having thenozzle 2 and thecollision body 4, and thenozzle 2, thecollision body 4, and theyarn guide 26 are integrated. The yarn introduced into thenozzle 2 from the right side inFIG. 1 and ejected from theyarn ejecting part 12 passes through the yarn guide on the viewer side inFIG. 1 (on the right side inFIG. 2 ) and is then guided upward. Because theyarn guide 26 is integrated with thenozzle holder 3 as described above, the position of theyarn guide 26 is automatically determined when theyarn processing device 1 is installed at a predetermined position, and it is therefore unnecessary to adjust the position of theyarn guide 26 with respect to thenozzle 2. - Now, effects of the
yarn processing device 1 of the present embodiment in the loftiness-imparting process will be described. To begin with, as shown inFIG. 1 to FIG. 3 , through theinlet 11a of theyarn introducing part 11 of thenozzle 2, ayarn 31 constituted by filaments made of synthetic resin or the like is introduced, and theyarn 31 is guided to theair introducing part 13. In the meanwhile, to theair introducing part 13, air supplied from an unillustrated air supply source is ejected from theair injection hole 14. - The air ejected into the
air introducing part 13 is discharged from theyarn ejecting part 12, and collides thecollision body 4 which is provided to oppose theoutlet 12a. By this airflow, theyarn 31 is ejected through the gap between thecollision body 4 and theyarn ejecting part 12. At this stage, the filaments constituting theyarn 31 are unwound on account of strong airflow in theyarn ejecting part 12, and loops and entanglements are formed as each filament severely vibrates. As such, loftiness is imparted to theyarn 31. - In connection with the above, as discussed earlier, in the
yarn processing device 1 of the present embodiment theconcave portion 4a is formed on the surface of thecollision body 4 which surface opposes theoutlet 12a. For this reason, a large space is provided between theyarn ejecting part 12 of thenozzle 2 and thecollision body 4, and this facilitates the generation of turbulence of airflow. Because the generation of loops and entanglements in the filaments ejected from theyarn ejecting part 12 is accelerated on account of the turbulence of airflow, the yarn processing capability is improved. When the processing capability of theyarn processing device 1 is improved, the quality of produced yarns is unchanged or improved even if the processing is conducted at a higher yarn speed, and hence the productivity is improved and an amount of air required to produce a unit length of yarn is reduced. - According to the present embodiment, the
concave portion 4a of thecollision body 4 is formed to have a curved surface which is circular-arc-shaped in cross section. As theconcave portion 4a has such a curved surface, the air ejected from theyarn ejecting part 12 along with the yarn flows in the space in theconcave portion 4a along the inner surface thereof. This restrains the air from being locally stagnant, and the formation of loops and entanglements on the filaments is further facilitated. Theconcave portion 4a which is circular-arc-shaped in cross section is deepest at the central part (where the central axis of thenozzle 2 passes through), and the yarn ejected from theyarn ejecting part 12 converges on and collides the deepest part of theconcave portion 4a. Because the yarn intensively collides a part of thecollision body 4, the subsequent yarn processing (the formation of loops and entanglements) is stably carried out, and hence the yarn processing capability is improved. - In addition to the above, according to the present embodiment, the
concave portion 4a and theflat portion 4b surrounding the concave portion are formed at the opposing part of thecollision body 4 which part opposes theoutlet 12a. The yarn processing is stable in this case, because, as compared to a case where the entirety of the opposing part of thecollision body 4 is formed to have a concave shape and the edge (outer periphery) is sharp (as in a later-described modification shown inFIG. 5(e) ), processing variation of the shape of the edge (outer periphery) of the opposing part of thecollision body 4 is restrained, and the formation of cracks is restrained. Provided that the outer diameter of thecollision body 4 is D, the diameter of theconcave portion 4a is d, and the width of theflat portion 4b is t, the equation D=d+2t holds true. In this regard, the width t of theflat portion 4b preferably falls within the range of 0≤t≤5(mm). - As illustrated by examples below, it will be evident that many modifications may be made to the embodiment described, while remaining within the scope of the invention.
- 1] The concave part of the
collision body 4 opposing theoutlet 12a of thenozzle 2 may not be circular-arc-shaped in cross section as in the embodiment above. For example, as shown inFIG. 5 , the cross section of theconcave portion 4a may be (a) partial elliptical, (b) U-shaped, (c) trapezoidal, or (d) conical, for example. - In
FIGs. 5 (a) to 5(d) , the partial ellipticalconcave portion 4a shown inFIG. 5(a) is, in the same manner as the circular-arc-shaped concave portion of the embodiment above (seeFIG. 4 ), has a curved inner surface. The air flows along the inner surface and hardly locally stagnant, and hence the formation of loops and entanglements on the filaments is facilitated. Furthermore, in cases of the partial elliptical shape inFIG. 5(a) and the conical shape inFIG. 5(d) , because the central part is the deepest part, the yarn intensively collides the deepest part of thecollision body 4, and hence the subsequent yarn processing is stably carried out. - In addition to the above, while the embodiment above is arranged so that, as shown in
FIG. 4 , theconcave portion 4a is formed only at a part of the surface of thecollision body 4 which surface is on theoutlet 12a side and theconcave portion 4a is surrounded by theflat portion 4b, the entirety of the surface of thecollision body 4 on theoutlet 12a side may be aconcave portion 4a as shown inFIG. 5(e) . - 2] The
nozzle 2 may be shaped differently from the shape of the embodiment above shown inFIG. 4 (a) . For example, as shown inFIG. 6 (a) , theyarn introducing part 11 is tapered whereas theyarn ejecting part 12 is horn-shaped. Alternatively, as shown inFIG. 6 (b) , theyarn introducing part 11 may have a straight shape with constant diameter. - 3] While in the embodiment above the
collision body 4 is arranged to be movable (rotatable) with respect to thenozzle holder 3, thecollision body 4 may be fixed with respect to thenozzle holder 3. - Now, specific examples of the present invention will be illustrated in comparison with comparative examples.
- The specifications of four types of nozzles used in examples and comparative examples are shown in Table 1, whereas the specifications of six types of collision bodies used in examples and comparative examples are shown in Table 2. Combinations of these nozzles and collision bodies are shown in
FIG. 7 . -
[Table 1] NOZZLE NUMBER NOZZLE SHAPE DIAMETER OF OUTLET K (mm) AIR INJECTION HOLE (mm) YARN INTRODUCING PART YARN EJECTING PART NO.1 HORN-SHAPED TAPERED 6 0.5 NO.2 HORN-SHAPED TAPERED 6 0.6 NO.3 TAPERED HORN-SHAPED 13 0.6 NO.4 TAPERED HORN-SHAPED 13 0.75 -
[Table 2] NAME OF COLLISION BODY SHAPE DETAILS Cup(11mm) CONCAVE DIAMETER OF CONCAVE PORTION(d) = 11mm, DEPTH OF CONCAVE PORTION(h) = 0.8mm Cup(20mm) CONCAVE DIAMETER OF CONCAVE PORTION(d) = 20mm, DEPTH OF CONCAVE PORTION(h) = 3.0mm Cup(24mm) CONCAVE DIAMETER OF CONCAVE PORTION(d) = 24mm, DEPTH OF CONCAVE PORTION(h) = 4.5mm Ball(6mm) SPHERICAL DIAMETER 6mm Ball(13mm) SPHERICAL DIAMETER 13mm Plate PLANAR - - The nozzle No.1 and the nozzle No.2 in Table 1 are nozzles shown in the left column (1) in
FIG. 7 . On the other hand, the nozzle No.3 and the nozzle No.4 in Table 2 are nozzles shown in the right column (2) inFIG. 7 . In this connection, as shown in Table 1, the nozzle No.1 is different from the nozzle No.2 in the diameter of the air injection hole, i.e., they are slightly different from each other in the thickness range of the yarn (the nozzle No.1 is for narrow yarns whereas the nozzle No.2 is for thick yarns). The same applies to the nozzle No.3 and the nozzle No.4. - In addition to the above, as shown in Table 2, there are six types of collision bodies in total, i.e., three types of collision bodies (Cups) in each of which the part of the nozzle opposing the outlet is arranged to be concave are used in the examples corresponding to the present invention, whereas two types of spherical collision bodies (Balls) and a single type of a planar collision body (Plate) are used in comparative examples. In
FIG. 7, (a) and (e) are spherical collision bodies 13mm in diameter, (b) and (f) are spherical collision bodies 6mm in diameter, (c) and (g) are planar collision bodies, and (d) and (h) are concave collision bodies of the present invention. All of the six types of the collision bodies are made of ceramics. - How the processing capability of the yarn processing device varies when the shape of the collision body is different was examined. That is to say, the nozzles in Table 1 were combined with the collision bodies of Table 2, and experiments were conducted with different materials of the yarn and different thickness of the yarn, and the yarn tension on the nozzle downstream side (discharging side) was measured in each case.
- It is noted that the experiments were done by core-and effect processing in which a core yarn and an effect yarn were supplied to a nozzle at different supply rates and processed. Furthermore, the yarn speed (discharging side yarn speed) on the nozzle downstream side were changed in four stages, and the yarn tension (in units of gr) was measured on the premise that the overfeed amount (the excess percentage of the amount of yarn supplied to the nozzle (i.e., supply side yarn speed) as compared to the amount of discharge yarn (discharging side yarn speed)) of each of the core yarn and the effect yarn was constant. The results of measurement of the yarn tensions on the discharging side when the thickness of polyester yarn (PET) was 150 denier, 300 denier, 600 denier, and 750 denier are shown in Table 3 to Table 6. Furthermore, the result of measurement of the yarn tension on the discharging side when the thickness of nylon yarn (PA6) was 140 denier is shown in Table 7. In Table 3 to Table 7, a nozzle suitable for the thickness of the yarn was appropriately selected from the four types of nozzles shown in Table 1.
-
[Table 3] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:75d/72f × 2=150d (a) NOZZLE NUMBER.1 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 7.2 7 6.8 6.8 Ball(6mm) 7 6.8 6.2 6 Ball(13mm) 6 5.2 5 4.8 Plate 7 7 6.6 6.2 (b) NOZZLE NUMBER.2 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 9 8.8 8.2 8 Ball(6mm) 7.8 7.6 7.5 7.2 Ball(13mm) 7.6 7.5 7.2 7 Plate 8.5 8.2 8 7.6 (c) NOZZLE NUMBER.3 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 8 7.6 7.5 7.5 Ball(6mm) 7 6.8 6.5 6.2 Ball(13mm) 7.8 7.2 7 6.8 Plate 7.8 7.4 7 6.8 -
[Table 4] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:150d/48f × 2=300d (a) NOZZLE NUMBER.1 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 9 8.3 7.7 7.2 Ball(6mm) 8.2 8 6.5 6 Ball(13mm) 7.6 7 6.2 6 Plate 8 7.8 7.2 6.6 (b) NOZZLE NUMBER.2 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 12.2 11.6 11 10.2 Ball(6mm) 8 7 6 5.2 Ball(13mm) 7.2 6.2 5.6 5 Plate 10 9 8.2 7.2 (c) NOZZLE NUMBER.3 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 10 10 9.5 8.7 Ball(6mm) 9 8.2 8 7.8 Ball(13mm) 9.6 8.5 8 7.2 Plate 9.2 8.4 8 7.6 -
[Table 5] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:150d/48f × 4=600d (a) NOZZLE NUMBER.2 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 16.2 15.1 13.2 12 Ball(6mm) 11 10 9 8 Ball(13mm) 10 8 7 6.5 Plate 16.1 15.1 13 11 (b) NOZZLE NUMBER.4 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 15 14.5 14 13 Ball(6mm) 10 9 8 7 Ball(13mm) 10.5 10 9 8 Plate 11 10 9.5 9 -
[Table 6] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:150d/48f × 5=750d (a) NOZZLE NUMBER.2 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 13 12 11.5 11 Ball(6mm) 12 11 10 9 Ball(13mm) 11.5 11 9.5 8.5 Plate 12 11 10 9 (b) NOZZLE NUMBER.4 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 350 400 450 500 Cup(11mm) 18.5 18 17.5 17 Ball(6mm) 12 11 10 9 Ball(13mm) 12.5 12 11 10 Plate 12.5 12 10.5 10 -
[Table 7] (YARN TYPE)MATERIAL:PA6, YARN THICKNESS:70d/48f × 2=140d (a) NOZZLE NUMBER.2 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 300 350 400 450 500 Cup(11mm) 6.5 6.4 6.3 6 5.8 Ball(6mm) 5.5 5.4 5.3 5.2 5 Ball(13mm) 5 4.9 4.8 4.6 4.4 Plate 6 5.8 5.3 5.2 5 (b) NOZZLE NUMBER.3 (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) 300 350 400 450 500 Cup(11mm) 6.3 6.2 6 5.8 5.5 Ball(6mm) 5 4.8 4.4 4.2 4 Ball(13mm) 5.1 5.1 5 4.9 4.8 Plate 6 5.8 5.2 5 4.9 - It has been known that the formation of entanglements on a yarn is typically enhanced as the yarn tension on the discharging side is increased. In other words, the quality of processing is improved as the yarn tension on the discharging side is increased. In this regard, as shown in Table 3 to Table 7, irrespective of the material of the yarn, the thickness of the yarn, and the type of the nozzle, the yarn tension on the discharging side was high in case where a concave collision body (Cup) of the present invention was used, as compared to the cases (comparative examples) where spherical collision bodies (Balls) and a planer collision body (Plate) were used. In short, when a concave collision body was used, the yarn processing capability of the yarn processing device was significantly improved.
- Furthermore, as shown in Table 3 to Table 7, the yarn processing capability is typically improved when the yarn speed is low, because the yarn tension on the discharging side is high. In this regard, when a spherical or planar collision body is used, the yarn speed must be decreased to achieve a certain level of processing quality (i.e., a certain level of yarn tension) . On the other hand, when the concave collision body of the present invention is used, yarns having the same or improved quality as those produced by spherical or planer collision bodies are produced at a higher yarn speed, and hence the productivity is improved.
- For example, according to Table 5, while in the spherical collision bodies (Balls) and the planer collision body (Plate) the tension of 11g was achieved only after the yarn speed was decreased to low 350m/min, in the concave collision body (Cup) the tension was still higher than 11g even if the yarn speed was increased to 500m/min, and hence the quality in the case of the concave collision body was as good as or higher than the quality achieved by the low-speed processing by using the spherical and planar collision bodies.
- The yarn processing capabilities of the concave collision body were examined with different concave portion diameters (d in
FIG. 7 ). In the experiments, three types of collision bodies with the diameters of the concave portions of 11mm, 20mm, and 24mm shown in Table 2 and the planar collision body of the comparative example were used, and the thickness of the yarn were changed. The yarn tensions of yarns that were made of PET and were 150 denier, 300 denier, and 600 denier in thickness were measured on the discharging side. The results are shown in Table 8 to Table 10. -
[Table 8] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:75d/72f × 2=150d (a) NOZZLE NUMBER.1 (K=6mm) (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) RATIO ε (=K/d) 350 400 450 500 Cup(11mm) 7.2 7 6.8 6.8 0.55 Cup(20mm) 8 7.6 7 7 0.3 Cup(24mm) 7.8 7.2 6.6 6.5 0.25 Plate 7 7 6.6 6.2 - (b) NOZZLE NUMBER.2(K=6mm) (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) RATIO ε (=K/d) 350 400 450 500 Cup(11mm) 9 8.8 8.2 8 0.55 Cup(20mm) 9 9 8.9 8.3 0.3 Cup(24mm) 8.5 8.5 8.2 8 0.25 Plate 8.5 8.2 8 7.6 - -
[Table 9] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:150d/48f × 2=300d (a) NOZZLE NUMBER.2(K=6mm) (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) RATIO ε (=K/d) 350 400 450 500 Cup(11mm) 12.2 11.6 11 10.2 0.55 Cup(20mm) 12.3 11.8 11 10.3 0.3 Cup(24mm) 12.4 11.8 11.1 10.3 0.25 Plate 10 9 8.2 7.1 - -
[Table 10] (YARN TYPE)MATERIAL:PET, YARN THICKNESS:150d/48f × 4=600d (a) NOZZLE NUMBER.2(K=6mm) (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) RATIO ε (=K/d) 350 400 450 500 Cup(11mm) 16.2 15.1 13.2 12 0.55 Cup(20mm) 16.5 15.3 14.2 13.1 0.3 Cup(24mm) 16.9 15.3 14.5 13.1 0.25 Plate 16.1 15.1 13 11 - (b) NOZZLE NUMBER.3(K=13mm) (gr) TYPE OF COLLISION BODY DISCHARGING SIDE YARN SPEED(m/min) RATIO ε (=K/d) 350 400 450 500 Cup(11mm) 15.2 13.3 12 11 1.18 Cup(20mm) 15.2 14.1 13 11.7 0.65 Cup(24mm) 15.1 14.1 12 11 0.54 Plate 13.2 12.2 10.4 9.2 - - As shown in Table 8 to Table 10, irrespective of the thickness of the yarn and the type of the nozzle, the yarn tension was high as compared to the case of the planar collision body when the diameter of the concave portion fell within the range of 11mm to 24mm, and the processing capability was improved.
- It is noted that the improvement in the processing capability seems not conspicuous when the concave portion of the collision body is extremely larger than or smaller than the diameter of the opposing outlet. In this regard, Table 8 to Table 10 show non-dimensional parameters each of which is the ratio between the diameter of the outlet of the nozzle (K) and the diameter of the concave portion of the collision body (d) (ε=K/d). This indicates that the processing capability is good at least when ε is between 0.25 and 1.18.
-
- 1 YARN PROCESSING DEVICE
- 2 NOZZLE
- 3 NOZZLE HOLDER
- 4 COLLISION BODY
- 4a CONCAVE PORTION
- 4b FLAT PORTION
- 10 YARN PATH
- 11a INLET
- 12 YARN EJECTING PART
- 12a OUTLET
- 14 AIR INJECTION HOLE
- 26 YARN GUIDE
- 31 YARN
Claims (6)
- A yarn processing device comprising:a nozzle including a yarn path constituted by a yarn introducing part and a yarn ejecting part and a fluid injection hole configured to eject fluid into the yarn path; anda collision body having a surface which opposes, over a gap,a leading end face of the yarn ejecting part on which face an outlet is formed,on the surface of the collision body which surface opposes the leading end face of the yarn ejecting part, an opposing part opposing the outlet being formed to have a concave shape.
- The yarn processing device according to claim 1, wherein, an inner surface of the concave opposing part of the collision body is formed by a curved surface.
- The yarn processing device according to claim 1 or 2, wherein, the opposing part of the collision body is formed to be deepest at a central part.
- The yarn processing device according to claim 1, wherein, the opposing part of the collision body is circular-arc-shaped or partial-elliptical-shaped in cross section.
- The yarn processing device according to any one of claims 1 to 4, wherein, on the opposing part of the collision body, a concave portion and a flat portion, which is in parallel to the leading end face of the yarn ejecting part including the outlet and surrounds the concave portion, are formed.
- The yarn processing device according to any one of claims 1 to 5, further comprising:a nozzle holder that holds the nozzle,the collision body being attached to the nozzle holder, andthe nozzle holder being provided with a yarn guide which is configured to guide a yarn having passed through a gap between the yarn ejecting part of the nozzle and the collision body.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010232624 | 2010-10-15 | ||
PCT/JP2011/070376 WO2012049924A1 (en) | 2010-10-15 | 2011-09-07 | Yarn processing device |
Publications (3)
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EP2628830A1 true EP2628830A1 (en) | 2013-08-21 |
EP2628830A4 EP2628830A4 (en) | 2014-04-02 |
EP2628830B1 EP2628830B1 (en) | 2015-07-01 |
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ID=45938158
Family Applications (1)
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EP11832363.3A Not-in-force EP2628830B1 (en) | 2010-10-15 | 2011-09-07 | Yarn processing device |
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EP (1) | EP2628830B1 (en) |
JP (1) | JP5754817B2 (en) |
KR (1) | KR101606376B1 (en) |
TW (1) | TWI586859B (en) |
WO (1) | WO2012049924A1 (en) |
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EP3697952A1 (en) * | 2017-10-16 | 2020-08-26 | Heberlein AG | Interlacing nozzle or texturing nozzle and device for treating a yarn |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1530252A (en) * | 1976-07-29 | 1978-10-25 | Heberlein Maschf Ag | Texturing of synthetic filaments |
Family Cites Families (4)
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DE19605675C5 (en) * | 1996-02-15 | 2010-06-17 | Oerlikon Heberlein Temco Wattwil Ag | Process for aerodynamic texturing and texturing nozzle |
JP2001140137A (en) * | 1999-11-12 | 2001-05-22 | Unitika Ltd | Fluid jetting device having yarn collision unit |
KR200296972Y1 (en) * | 2002-08-26 | 2002-12-05 | 이화공업주식회사 | A yarn protecting guide tension device of the interlacer nozzle |
CN2591054Y (en) * | 2002-12-19 | 2003-12-10 | 陈家寿 | Air deformation spray nozzle |
-
2011
- 2011-09-07 JP JP2012538606A patent/JP5754817B2/en not_active Expired - Fee Related
- 2011-09-07 KR KR1020137012256A patent/KR101606376B1/en active IP Right Grant
- 2011-09-07 EP EP11832363.3A patent/EP2628830B1/en not_active Not-in-force
- 2011-09-07 WO PCT/JP2011/070376 patent/WO2012049924A1/en active Application Filing
- 2011-10-04 TW TW100135914A patent/TWI586859B/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1530252A (en) * | 1976-07-29 | 1978-10-25 | Heberlein Maschf Ag | Texturing of synthetic filaments |
Non-Patent Citations (1)
Title |
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See also references of WO2012049924A1 * |
Also Published As
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WO2012049924A1 (en) | 2012-04-19 |
JP5754817B2 (en) | 2015-07-29 |
KR101606376B1 (en) | 2016-03-25 |
EP2628830B1 (en) | 2015-07-01 |
TW201229342A (en) | 2012-07-16 |
JPWO2012049924A1 (en) | 2014-02-24 |
KR20140010365A (en) | 2014-01-24 |
TWI586859B (en) | 2017-06-11 |
EP2628830A4 (en) | 2014-04-02 |
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