TWI768571B - Spinning nozzle and spinning device - Google Patents

Abstract

The spinning nozzle comprises: a supply portion having a first through hole for supplying yarn along the central axis, an entangled portion having a second through hole connected to the first through hole along the central axis and a plurality of flow paths for supplying gas for entanglement of threads from the outside toward the second through hole, and a discharge portion which is connected to the second through hole along the central axis and has a third through hole for discharging the entangled yarn. The entangled portion is arranged at least on the inner peripheral surface side in the circumferential direction of the entangled portion, and is composed of a plurality of first segments in which the side surfaces are in contact with each other.

Description

Spinning Nozzles and Spinning Devices

The present disclosure relates to spinning nozzles and spinning devices for use in Taslan (DuPont, registered trademark) processing of filaments.

Taslan processing is a method that has been widely used in the past to bulk up the silk thread by the power of compressed air, and make it strong and end into a loop. As a nozzle used in such taslan processing, Patent Document 1 proposes a nozzle with a structure including a straight thread passage (4) for introducing a thread from one end and pulling out a textured thread from the other end, and An inclined compressed air hole (15) for supplying the compressed air that feeds the wire in the direction of travel. Patent Document 1 describes that the textured nozzle (nozzle core) is made of ceramic, cemented carbide, or special steel.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3215341

The spinning nozzle of the present disclosure is provided with the following parts: a supply part having a first through hole for supplying the yarn along a central axis; an intersection part having a second through hole connected to the first through hole along the central axis A hole, and a plurality of flow paths for supplying gas for interlacing the wires from the outside toward the second through hole; the discharge portion has a third passage along the central axis, which is connected to the second through hole and discharges the interlaced wire. A hole; wherein, the intersection part is constituted by a plurality of first links which are arranged in the peripheral direction of the intersection part and make the side surfaces abut against each other at least on the inner peripheral surface side.

Furthermore, the flow path of the spinning nozzle of the present disclosure in the intersection portion is inclined from the outer peripheral surface of the intersection portion toward the discharge portion, and the flow path is in the opening edge portion facing the second through hole, at least within the flow path. The opening edge portion of the portion where the angle between the peripheral surface and the inner peripheral surface of the second through hole is the smallest is formed in a chamfered or curved shape.

The spinning device of the present disclosure includes the aforementioned spinning nozzle.

1: Spinning nozzle

2: 1st through hole

2a: truncated cone

2b: Cylindrical part

3: Supply Department

4: 2nd through hole

5: flow path

6: Intersection

7: 3rd through hole

7a: horn

8: discharge part

8a: 1st discharge part

8b: 2nd discharge part

9: Shell part

10: Opening edge

11: Ditch

51: Ditch

61: Session 1

61a: side

91: Session 2

91a: side

FIG. 1A is a front view showing an embodiment of the spinning nozzle of the present disclosure.

FIG. 1B is a cross-sectional view taken along line X-X of FIG. 1A .

Fig. 2 is a schematic perspective view showing an example of the first link.

3 is a schematic cross-sectional view showing a portion where the second through hole and the flow path of the intersection portion intersect in the present disclosure.

FIG. 4 shows another embodiment of the spinning nozzle of the present disclosure, and is a cross-sectional view along the line X-X shown in FIG. 1A .

The embodiment of the present disclosure provides a suitable spinning nozzle that can be easily used according to the material, thickness, and use of the yarns that are interlaced by the Taslan process, and that can be easily exchanged. In addition, the embodiment of the present disclosure also provides a spinning nozzle that is not easily damaged during production or the like.

Hereinafter, a spinning nozzle according to an embodiment of the present disclosure will be described with reference to the drawings. FIG. 1A is a front view showing an embodiment of the spinning nozzle of the present disclosure, and FIG. 1B is an X-X line sectional view thereof.

The spinning nozzle 1 shown in FIGS. 1A and 1B is used in a spinning apparatus for Taslan processing. Taslan processing usually means blowing compressed air to silk threads (filamentous fibers), so that the threads are mixed and intertwined, forming loops or slack on the surface of the silk threads, thereby increasing the bulkiness and processing into a soft touch.

As shown in FIG. 1B , the spinning nozzle 1 is provided with a cylindrical supply part 3 , an entanglement part 6 and a discharge part 8 arranged in this order along the central axis C in the direction indicated by the arrow A.

The supply part 3 has the first through hole 2 for supplying the yarn in the direction indicated by the arrow A. The intersection portion 6 has a second through hole 4 connected to the first through hole 2 along the central axis, and a plurality of flow paths 5 for supplying gas for intersecting the wires toward the second through hole 4 from the outside. The discharge part 8 has a third through-hole 7 which is connected to the second through-hole 4 along the central axis and discharges the intersected wire.

The flow path 5 is inclined toward the discharge portion 8 from the outer peripheral surface of the intersection portion 6 . The inclined angle of the flow path 5 relative to the central axis C is preferably about 40° to 56°, preferably about 43° to 53°.

On the outer peripheral surface side of the supply part 3 , the intersection part 6 and the discharge part 8 , there is provided a casing part 9 for fixing these into one body. That is, the housing portion 9 extends along the central axis C to the supply-side end face of the supply portion 3 and the discharge-side end face of the discharge portion 8 .

The junction portion 6 is constituted by three first links 61 . The first link 61 is shown in FIG. 2 . The section of the first link 61 is fan-shaped, and the angle θ of its expansion is about 120°. Therefore, by arranging the three first links 61 in the peripheral direction of the intersection portion 6 and making the side surfaces 61a of the other adjacent first links 61 abut each other, the cylindrical intersection portion 6 can be formed.

In addition, in this embodiment, although the intersection part 6 consists of three 1st links 61, it is not limited to this, and the number of the 1st links 61 can be selected from the range of 2-6, for example.

The flow path 5 in the intersection part 6 is formed as follows. That is, grooves 51 connecting the outer peripheral surface and the inner peripheral surface of each first link 61 are provided on both side surfaces 61a and 61a of each first link 61, and the grooves 51 have semicircular cross-sections perpendicular to the axial direction. When the side surfaces 61a, 61a of the adjacent first links 61, 61 are in contact with each other, the grooves 51, 51 form the flow path 5 with a circular cross-section. Thereby, even if an abnormality is expected to occur due to the wall surface of the groove 51 forming the flow channel 5, the adhesion causing the abnormality can be easily removed by disassembling the flow channel 5 and observing the wall surface of each first link 61. things etc.

Instead of the flow path 5 having a circular cross section, the flow path 5 having a rectangular cross section can also be formed, and the same effects as those described above can be obtained.

Instead of the groove 51 on the side surface 61a, the flow path 5 connecting the outer peripheral surface and the inner peripheral surface may be formed inside the first link 61. This eliminates the need to align the grooves 51 and 51 with each other, so that the cross-sectional shape of the flow path 5 perpendicular to the axial direction can be made close to a true circle, and turbulence is less likely to occur in the flow path 5 .

The first link 61 is preferably composed of ceramics such as titanium carbide ceramics, titanium carbonitride ceramics, titanium nitride ceramics, alumina ceramics, zirconia ceramics, and composite ceramics of alumina and zirconia. Thereby, there is an advantage that the mechanical properties and wear resistance of the first link 61 can be improved.

Regarding the mechanical properties of the ceramics, for example, the Vickers hardness according to JIS R 1610: 2003 is 10 GPa or more, and the 3-point bending strength according to JIS R 1601: 2008 is 310 MPa or more.

If the wear resistance of the first link 61 is increased, even if the wall surface forming the second through hole 4 is in contact and travels for a long time, it is not easy to wear.

If the above-mentioned ceramics constituting the first link 61 are, for example, titanium carbide ceramics, among the total 100 mass % of the components constituting the first link 61, titanium carbide is the ceramic that occupies 70 mass % or more. Regarding the titanium carbonitride ceramics , Titanium nitride ceramics, alumina ceramics and zirconia ceramics are the same. The composite ceramic of alumina and zirconia means that each of the alumina and zirconia contains at least 10% by mass or more of the total 100% by mass of the components constituting the first stage 61, and the total content is 70% by mass. The above ceramics.

The supply part 3 and the discharge part 8 are also made of the above-mentioned ceramics such as titanium carbide ceramics, titanium carbonitride ceramics, titanium nitride ceramics, alumina ceramics, zirconia ceramics, and composite ceramics of alumina and zirconia. Composition is good.

Here, the components constituting the ceramic can be identified from the measurement results obtained by an X-ray diffraction apparatus using CuKα rays, and the content of each component can be determined by, for example, an ICP (Inductively Coupled Plasma) emission spectrometer or a fluorescent X-ray. obtained by the line analyzer.

In the wall surface forming the flow path 5, it represents the difference between the cut-off height (level) at 25% load length ratio in the roughness curve and the cut-off height at 75% load length ratio in the aforementioned roughness curve, that is, the aforementioned roughness. The cutting height difference (Rδc) in the degree curve is preferably 0.3 μm or less.

Moreover, it is preferable that the arithmetic mean roughness Ra in the roughness curve of the wall surface which forms the flow path 5 is 0.2 micrometer or less.

When the cutting height difference (Rδc) is 0.3 μm or less or the arithmetic mean roughness Ra is 0.2 μm or less, since the unevenness of the surface properties of the wall surface is reduced, turbulent flow is less likely to occur in the flow path 5 . In addition, since the water repellency of the wall surface is increased, it becomes difficult for dirt to adhere to the wall surface, so that the wall surface can be easily cleaned, or the number of cleanings can be reduced.

The cutting height difference (Rδc) and the arithmetic mean roughness (Ra) can be measured according to JIS B 0601:2001 using a shape analysis laser microscope (Keans Co., Ltd., VK-X1100 or its successor). The measurement conditions were set to 240x magnification, coaxial epi-illumination, no cut-off value λs, cut-off value λc set to 0.08 mm, no cut-off value λf, and correction for the final effect. The measurement method is to set the measurement range of each place from the wall surface as the measurement object to, for example, 1425 μm × 1067 μm, and each respective measurement range is drawn along the longitudinal direction, and four lines are drawn at approximately equal intervals as measurement. line of objects. Next, the line roughness measurement may be performed on a total of 8 lines as measurement objects within the measurement range at two locations. The length of each line to be measured was 1280 μm.

As shown in FIGS. 1A and 1B , the case portion 9 is constituted by two second links 91 and 91 . These second links 91 and 91 are made of metals or plastics such as stainless steel (SUS304, etc.), carbon steel (S35C, S45C, etc.), rolled steel for general construction (SS400, etc.). Next, the side surfaces 91 a of the second links 91 and 91 are made to abut each other to form a cylindrical shape so as to surround the supply part 3 , the intersection part 6 and the discharge part 8 . Thereby, even if the spinning nozzle 1 is dropped due to an error, since the housing portion 9 protects the supply portion 3, the junction portion 6, and the discharge portion 8, the fear of being damaged can be reduced.

In particular, when the second links 91 and 91 are made of carbon steel (S35C, S45C, etc.) or rolled steel for general construction (SS400, etc.), since these metals have high thermal conductivity, even if the wire is formed in the first 2. The wall surfaces of the through-holes 4 are in contact for a long time to generate heat in the junction 6, and the heat can also be rapidly dissipated through the second links 91 and 91.

When the second links 91 and 91 are made of plastic, since the specific gravity of the plastic is small, the entire spinning nozzle 1 can be made lighter.

A groove 11 extending from the outer peripheral surface side to the inner peripheral surface side is formed on the side surface 91 a of the second link 91 . The groove 11 is formed as a circular through hole in a state in which the side surfaces 91a of the two second links 91 are in contact with each other, and is configured to communicate with the branch channel 5 on the inner peripheral surface side. Thereby, gas such as compressed air can be sent into the second passage 4 .

The through-holes formed by making the side surfaces 91a of the two second links 91 abut against each other are preferably larger in diameter than the flow path 5 . Thereby, the assembly and disassembly of the intersection part 6 and the shell part 9 formed by the first link 61 and the second link 91 can be facilitated.

In addition, in the present embodiment, the housing portion 9 surrounds the supply portion 3 , the intersection portion 6 and the discharge portion 8 , but it may be set to surround at least the intersection portion 6 and protect the intersection portion 6 . In addition, the number of the second links 91 is not limited to two, and can be selected from a range of two to six.

As described above, the second links 91 and 91 are in contact with each other by their side surfaces, and in a state of surrounding the supply part 3 , the intersection part 6 and the discharge part 8 , by moving the supply part 3 and the discharge part 8 from the outer peripheral side toward the central axis, respectively An associative structural member (not shown in the drawing) such as an O-ring to be locked is fixed to form a casing portion 9 . Thereby, the assembly and disassembly of the intersection part 6 and the shell part 9 formed by the first link 61 and the second link 91 can be facilitated.

The discharge part 8 is composed of two members arranged along the central axis C, that is, a first discharge part 8a and a second discharge part 8b. Thereby, as described above, assembly and disassembly are facilitated. In addition, the first discharge portion 8a and the second discharge portion 8b may be constituted by a plurality of links, and It is arrange|positioned in the peripheral direction of the discharge part 8, and let the side surfaces contact each other. Thereby, assembly and disassembly are further facilitated.

FIG. 4 shows another embodiment of the spinning nozzle of the present disclosure, and is a cross-sectional view taken along the line X-X shown in FIG. 1A . As shown in FIG. 4, the first through hole 2 has a truncated cone-shaped portion 2a whose diameter is reduced from the side where the wire is supplied toward the second through-hole 4, and a cylindrical portion 2b connected to the truncated cone-shaped portion 2a. The vertex angle α of the platform portion 2a is preferably 13° or more and 19° or less.

When the vertex angle α is 13° or more, since the opening area on the side where the yarn is supplied becomes large, the supply of the yarn becomes easy. When the apex angle α is 19° or less, since the thickness of the periphery of the end face on the side where the yarn is supplied can be sufficiently ensured, chips and defects caused by the supply portion 3 are less likely to be generated.

As shown in FIG. 1B and FIG. 4 , the third through hole 7 has a horn-shaped portion 7 a whose diameter is enlarged toward the side of the discharge wire, and the radius of curvature R of the inner peripheral surface forming the horn-shaped portion 7 a may also be the second through hole 7 a. The diameter of hole 4 is more than 4 times.

The horn-shaped portion 7a has the function of forming a loop or relaxation of the wire-like surface. At the same time, since the supersonic flow is generated in the horn-shaped portion 7a, an air velocity of, for example, above 450 m/s can be obtained. The discharge speed is increased and the production efficiency is improved.

When the radius of curvature R of the inner peripheral surface forming the horn-shaped portion 7a is four times or more the diameter of the second through hole 4, the entanglement of the wires is further efficiently performed.

For example, the diameter of the second through hole 4 is 1 mm or more and 1.4 mm or less, and the curvature radius R of the inner peripheral surface is 5 mm or more and 7 mm or less.

At least any one of the inner peripheral surface of the first through hole 2, the second through hole 4 and the third through hole 7 is formed, and it represents the cutting height and the roughness curve at the load length ratio of 25% in the roughness curve. The difference in cutting height at 75% load length ratio in the wire, that is, the cutting height difference (Rδc) in the roughness curve may be 0.3 μm or less (but 0 μm is not included).

Since the oiliness of the inner peripheral surface is improved, the oil and the like adhering to the surface of the thread become difficult to adhere, and the production efficiency of Taslan processing can be maintained for a long time.

At least any one of the inner peripheral surfaces of the first through hole 2 , the second through hole 4 , and the third through hole 7 may have an arithmetic mean roughness (Ra) in the roughness curve of 0.2 μm or less.

When the arithmetic mean roughness (Ra) of the inner peripheral surface is 0.2 μm or less, even if the thread is slid on the inner peripheral surface, the thread is not easily cut, and threshing is not easily generated from the inner peripheral surface, so it is used for a long time. .

The cutting height difference (Rδc) and the arithmetic mean roughness (Ra) of the inner peripheral surface of the first through hole 2, the second through hole 4 and the third through hole 7 are also determined by the cut height difference ( Rδc) and arithmetic mean roughness (Ra) can be measured by the same method.

The cross-sectional shape of any one of the first through hole 2 , the second through hole 4 , and the third through hole 7 perpendicular to the central axis C is circular. The diameter of the second through hole 4 is preferably equal to or larger than the diameter of the side of the first through hole 2 connected to the second through hole 4 . In particular, when the diameter of the second through hole 4 is larger than the diameter of the first through hole 2, it is easy to align the positions of the supply portion 3 and the intersection portion 6 when the spinning nozzle 1 is assembled.

Furthermore, the diameter of the third through hole 7 is preferably equal to or larger than the diameter of the second through hole 4 . In particular, when the diameter of the connection side of the third through-hole 7 with the second through-hole 4 is larger than the diameter of the second through-hole 4, when the spinning nozzle 1 is assembled, the connection between the supply part 3 and the junction part 6 can be easily made. position alignment.

As shown in FIG. 3 , the flow path 5 in the intersection portion 6 is inclined toward the discharge portion from the outer peripheral surface of the intersection portion 6 , and opens on the inner peripheral surface of the intersection portion 6 . The central axis C1 of the flow path 5 intersects the central axis C of the second through hole 4 . Among the opening edges of the flow channel 5 facing the second through hole 4, at least the opening edge 10 of the position where the angle between the inner peripheral surface of the flow channel 5 and the inner peripheral surface of the second through hole 4 is the smallest is formed as Chamfered or curved. Thereby, the defect of the opening edge part 10 can be suppressed especially at the time of manufacture. In addition, the opening edge portion 10 may have a chamfered shape in addition to the curved shape. When the opening edge portion 10 is curved, the radius of the curved surface connecting the inner peripheral surface of the flow path 5 and the inner peripheral surface of the second through hole 4 in the opening edge portion 10 is, for example, 0.03 mm to 0.25 mm.

When the opening edge 10 is in a chamfered shape, the size of the chamfer can be, for example, 0.03 mm to 0.25 mm. When the radius of the curved surface or the size of the chamfer is 0.03 mm or more, the defects of the opening edge portion 10 can be suppressed more significantly, and when it is 0.25 mm or less, the fear of turbulent flow can be reduced. In particular, the radius or chamfer size of the curved surface is preferably 0.05 mm to 0.2 mm.

Here, when the chamfer is vertical with respect to the inner peripheral surface of the second through hole 4 , the size of the chamfer is the height of the second through hole 4 in the normal direction of the inner peripheral surface.

In addition, a chamfered or curved shape may be formed on the entire periphery of the opening edge portion 10 .

As described above, the spinning nozzle 1 of the present disclosure is used in a spinning device for spinning Taslan processing yarns. At this time, the spinning nozzle 1 of the present disclosure can be disassembled as a whole including the casing portion 9. Therefore, when it is necessary to change the diameter of the second through hole 4 or the flow path 5 according to the material, thickness, and application of the intertwined yarn , as long as the junction 6 is exchanged. Furthermore, since the intersection part 6 is constituted by arranging a plurality of first links 61 in the surrounding direction, the first links 61 can be disassembled and exchanged with new first links 61 easily. Furthermore, even if the entanglement of the threads is overlapped and the entanglement portion 6 is damaged, it is only necessary to exchange the first link 61 at the damaged position, so that the amount of waste can be reduced.

Furthermore, according to the present disclosure, since the opening edge portion 10 at the position where the angle between the inner peripheral surface of the inclined flow path 5 and the inner peripheral surface of the second through hole 4 is the smallest is formed into a chamfered or curved shape, In particular, defects of the opening edge portion 10 can be suppressed during manufacture.

The embodiments of the present disclosure have been described above, but the present disclosure is not limited to the above embodiments, and various changes and improvements can be made within the scope of the claims. For example, in the above-described embodiment, although the casing portion 9 is constituted by a plurality of second links 91, the casing portion 9 may be constituted by a single cylindrical body, and the supply portion 3, the junction portion 6, and the discharge portion 8 may be accommodated therein. .

1: Spinning nozzle

2: 1st through hole

3: Supply Department

4: 2nd through hole

5: flow path

6: Intersection

7: 3rd through hole

7a: horn

8: discharge part

8a: 1st discharge part

8b: 2nd discharge part

9: Shell part

11: Ditch

51: Ditch

61: Session 1

91: Session 2

Claims (14)

A spinning nozzle is composed of the following parts: a supply part, which has a first through hole for supplying yarn along a central axis; an intersection part, which has a connection with the first through hole along the central axis A second through hole, and three flow paths for supplying gas for interlacing the wires from the outside toward the second through hole, and a discharge portion having a connection to the second through hole along the center axis and to The third through hole through which the filaments are discharged after the entanglement; wherein, the entanglement portion is composed of at least the inner peripheral surface side, which is arranged in the peripheral direction of the entanglement portion so that the side surfaces are in contact with each other. The first link has a groove on each side surface that connects the outer peripheral surface and the inner peripheral surface of the first link, and the groove on each side surface in a state where the side surfaces of the adjacent first links are in contact with each other is the flow. road. The spinning nozzle according to claim 1 has a casing portion at least on the outer peripheral surface side of the intersection portion, and the casing portion is composed of a plurality of second links surrounding the intersection portion with side surfaces abutting each other. The spinning nozzle according to claim 2, wherein the first stage is made of ceramics, and the second stage is made of metal or plastic. The spinning nozzle according to claim 2 or 3, wherein the second ring extends along the central axis to the supply-side end face of the supply portion and the discharge-side end face of the discharge portion, and is formed from the outer peripheral side. The associative structural member that is locked toward the central axis is fixed to form the housing portion. The spinning nozzle according to any one of claims 1 to 3, wherein the wall surface forming the flow path has a cut height at 25% load length ratio in the roughness curve and a cutoff height of 75% in the roughness curve. The difference between the cutting heights of the % load length ratio, that is, the cutting height difference (Rδc) in the aforementioned roughness curve is 0.3 μm or less. The spinning nozzle according to any one of claims 1 to 3, wherein the wall surface forming the flow path has an arithmetic mean roughness Ra of 0.2 μm or less in the roughness curve. The spinning nozzle according to any one of claims 1 to 3, wherein the flow path in the intersection portion is inclined from the outer peripheral surface of the intersection portion toward the discharge portion, and the flow path faces the second through hole Among the opening edge portions, at least the opening edge portion of the portion where the angle between the inner peripheral surface of the flow path and the inner peripheral surface of the second through hole is the smallest is formed in a chamfered or curved shape. The spinning nozzle according to any one of claims 1 to 3, wherein the first through hole has a truncated cone-shaped portion whose diameter is reduced from the side where the yarn is supplied toward the second through hole, and the For the cylindrical portion connected by the truncated cone-shaped portion, the vertex angle of the aforementioned truncated cone-shaped portion is 13° or more and 19° or less. The spinning nozzle according to any one of claims 1 to 3, wherein the third through hole has a horn-shaped portion whose diameter is enlarged toward the side where the yarn is discharged, and the discharge portion that forms the horn-shaped portion has a horn-shaped portion. The radius of curvature of the inner peripheral surface is more than 4 times the diameter of the second through hole. The spinning nozzle according to any one of claims 1 to 3, wherein at least any one of the inner peripheral surfaces of the first through hole, the second through hole, and the third through hole is formed, and it shows roughness. The cutting height at 25% load length rate in the roughness curve and the roughness curve above The difference in cutting height at 75% load length ratio, that is, the cutting height difference (Rδc) in the aforementioned roughness curve is 0.3 μm or less, but 0 μm is not included. The spinning nozzle according to any one of claims 1 to 3, wherein at least any one of the inner peripheral surfaces of the first through hole, the second through hole, and the third through hole has a roughness The arithmetic mean roughness Ra in the curve is 0.2 μm or less. The spinning nozzle according to any one of claims 1 to 3, wherein any one of the first through hole and the second through hole has a circular cross-sectional shape perpendicular to the central axis, and the second through hole is circular. The diameter is equal to or larger than the diameter of the side of the first through hole connecting with the second through hole. The spinning nozzle according to any one of claims 1 to 3, wherein any one of the second through hole and the third through hole has a circular cross-sectional shape perpendicular to the center axis, and the third through hole is circular. The diameter of the side connected to the second through hole is equal to or larger than the diameter of the second through hole. A spinning device including the spinning nozzle according to any one of claims 1 to 13.

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