CN114941193A - Interlacing device and yarn winding machine - Google Patents

Abstract

The present invention relates to a thread winding device and a thread winding machine. The efficiency of applying crossovers to the yarn can be improved without increasing the pressure or flow rate of the fluid. The crossing device (30) is provided with a crossing section (32), a limiting guide (33) (limiting section), and a widening guide (50) (widening section). The interlacing unit has a yarn running space (43) for running the yarn (Y) in a predetermined 1 st direction. The yarn winding section has an ejection hole (41a) for ejecting compressed air (fluid) to the yarn running space in the 2 nd direction intersecting the 1 st direction. The restricting guide is disposed at a position separated from the crossing portion in the 1 st direction, and restricts movement of the yarn in the 3 rd direction crossing the 2 nd direction when viewed from the 1 st direction. The widening yarn guide is disposed between the crossing section and the restricting yarn guide in the 1 st direction, and widens the yarn running in the yarn running space in the 3 rd direction.

Description

Interlacing device and yarn winding machine

Technical Field

The present invention relates to a yarn winding device and a yarn winding machine including the yarn winding device.

Background

The spinning and drawing device (yarn winding machine) described in patent document 1 includes a crosser that crossovers a yarn having a plurality of filaments by a fluid. The yarn winding device includes a yarn winding unit in which a yarn running space extending in a predetermined direction and an injection hole for injecting a fluid into the yarn running space are formed. Further, the 1 st regulating part (regulating part) is disposed on both sides of the interlace part in the predetermined direction. The restricting portion is configured such that the yarn is disposed in a central portion of the yarn running space when viewed from the predetermined direction. In such a crosswinding device, when the fluid is injected into the yarn running space through the injection hole, the yarn is opened and swirled by the action of the fluid. Thereby, regions where the filaments are entangled with each other (entanglement points) are formed at substantially regular intervals.

Patent document 1: japanese patent laid-open publication No. 2016-160550

It is generally known that the distance between the nodes is difficult to control completely, and a certain degree of deviation occurs. When a portion having a long distance between the points of intersection (i.e., a portion where filaments are easily separated from each other) exists in the yarn, the following problem may occur. For example, in a package formed by winding a yarn around a bobbin, the yarn on the outer layer is likely to be caught by the yarn on the inner layer. This may prevent the yarn from being unwound properly from the package. In order to suppress such a problem, crossovers need to be more efficiently applied to the yarns. However, if the pressure or flow rate of the fluid is simply increased, the force applied to the yarn becomes too strong, and there is a possibility that the yarn comes into contact with the inner wall surface of the yarn running space, which causes problems such as a decrease in the quality of the yarn and an increase in running cost.

Disclosure of Invention

The purpose of the present invention is to improve the efficiency of applying crossovers to yarns without increasing the pressure or flow rate of a fluid.

A crosswinding device according to claim 1 is a crosswinding device for applying crosswinding to a running yarn having a plurality of filaments, the crosswinding device including: a cross-winding unit having a yarn running space for running the yarn in a predetermined 1 st direction and an injection hole for injecting a fluid into the yarn running space in a 2 nd direction intersecting the 1 st direction, the cross-winding unit being configured to cross-wind the yarn with the fluid injected into the yarn running space from the injection hole; a restricting unit that is disposed at a position separated from the crossing unit in the 1 st direction and restricts movement of the yarn in a 3 rd direction intersecting the 2 nd direction when viewed from the 1 st direction; and a widening section that is disposed between the crossing section and the limiting section in the 1 st direction and widens the yarn running in the yarn running space in the 3 rd direction.

In the present invention, the center position of the yarn in the 3 rd direction can be defined by the regulating section. And, the thread running in the thread running space is widened in the 3 rd direction by the widening portion. This enables the fluid injected in the 2 nd direction through the injection hole to efficiently contact the filament. Therefore, even if the pressure or flow rate of the fluid is not increased, the fluid can be effectively applied to the yarn, and the yarn can be efficiently opened and twisted. Thus, the efficiency of applying crossovers to the yarn can be improved without increasing the pressure or flow rate of the fluid.

In the interlacing device according to claim 2, in the 1 st aspect, the widening portion is configured such that a width of at least a portion of the yarn running in the yarn running space is larger than a width of a portion of the yarn limited by the limiting portion in the 3 rd direction.

In the present invention, the width of the thread widened by the widening portion in the 3 rd direction is larger than the width of the thread conventionally defined by the restricting portion. This enables the fluid injected through the injection hole to efficiently contact the filament.

The interlacing device according to claim 3 is characterized in that, in the 1 st or 2 nd aspect, the widening portion widens the yarn so that a difference between a width of the yarn in the 3 rd direction and a size of the ejection hole in the 3 rd direction is small.

In the present invention, the fluid ejected through the ejection hole can be efficiently brought into contact with the filament to the maximum extent.

The spooling device of the 4 th aspect of the invention is the spooling device of any one of the 1 st to 3 rd aspects of the invention, wherein the widening section has a bar-shaped widening guide extending along the 3 rd direction.

In the present invention, the thread can be widened in the 3 rd direction by applying resistance to the thread running in the 1 st direction by the bar-shaped widening guide. This makes it possible to widen the yarn with a simple structure.

A crosswinding apparatus according to claim 5 is the crosswinding apparatus according to any one of claims 1 to 4, wherein the widened portion is at least a portion of a contact portion with the yarn, and is disposed at a position overlapping with the yarn running space when viewed from the 1 st direction.

The contact portion of the widened portion with the yarn may not necessarily be disposed at a position overlapping the yarn running space when viewed from the 1 st direction. However, in such a case, in order to appropriately guide the yarn into the yarn running space, it is necessary to dispose another yarn guide between the crossing portion and the widening portion in the 1 st direction. In the present invention, the widened portion can also function as a thread guide for appropriately guiding the thread into the thread running space. This can simplify the structure of the crosser.

The crosswinding apparatus according to claim 6 is characterized in that, in any one of the inventions 1 to 5, the widened portion is curved at a contact portion with the yarn.

In the present invention, the widened portion can be suppressed from damaging the running yarn, as compared with the case where the contact portion has an angle. This can suppress yarn breakage.

The crosswinding apparatus according to claim 7 is characterized in that, in any one of the inventions 1 to 6, the widening portion does not rotate.

In the configuration in which the widening portion rotates in accordance with the travel of the yarn, the efficiency of applying resistance to the yarn decreases, and the yarn becomes difficult to widen. In the present invention, the widened portion does not rotate, and therefore, resistance can be applied to the yarn efficiently. This enables the yarn to be efficiently widened.

The yarn winding machine according to claim 8 is characterized by comprising: the crosser according to any one of the above 1 to 7; and a winding section for winding the yarn wound by the winding device to form a package.

In the present invention, a package can be formed using a yarn to which crossovers are stably applied. Therefore, the occurrence of unwinding failure of the yarn due to the yarn wound around the outer layer being caught by the yarn wound around the inner layer can be suppressed.

Drawings

Fig. 1 is a side view of a spinning and drawing machine including a crosswinding device according to the present embodiment.

Fig. 2 is a side sectional view of the crosswinding apparatus.

Fig. 3 is a sectional view taken along line III-III of fig. 2.

Fig. 4 is a sectional view taken along line IV-IV of fig. 2.

Fig. 5 (a) is an explanatory view showing the intersection point of the filament, and (b) is an explanatory view showing the cross section of the filament.

Fig. 6 is a cross-sectional view of the interlacing device of comparative example 1.

Fig. 7 is a cross-sectional view of the crosswinding apparatus of comparative example 2.

Fig. 8 (a) is an explanatory view showing a cross-sectional shape of the filament of the example, and (b) and (c) are explanatory views showing a cross-sectional shape of the filament of the comparative example.

Fig. 9 is a table showing evaluation results of the distance between intersection points.

Fig. 10 is a cross-sectional view of the interlacing device according to a modification orthogonal to the 1 st direction.

Fig. 11 is a cross-sectional view of a cross device according to a modification orthogonal to the left-right direction.

Fig. 12 is a sectional view taken along line XII-XII of fig. 11.

Description of the symbols

1 spinning traction machine (Silk thread winding machine)

30 air crossing device

32 parts of crossroad

33 restriction guide wire device (restriction part)

41 st crosswind sheet

41b injection hole

43 thread running space

50 widening yarn guide (widening part)

51a contact part

52a contact part

f filament

P package

Y silk thread

Detailed Description

Next, embodiments of the present invention will be explained. For convenience of explanation, the directions shown in fig. 1 are the up-down direction and the front-rear direction. The vertical direction is a vertical direction on which gravity acts. The front-rear direction is orthogonal to the vertical direction, and is a direction in which a plurality of bobbins B (described later) are arranged. A direction orthogonal to both the vertical direction and the front-rear direction is defined as a horizontal direction. The direction in which the yarn Y (described later) travels is referred to as a yarn traveling direction.

(spinning traction machine)

A spinning draft machine 1 (a yarn winding machine of the present invention) according to the present embodiment will be described in brief with reference to fig. 1. Fig. 1 is a side view of a spinning and drawing machine 1 including a crosswinding device 30 (described later) according to the present embodiment. The spinning traction machine 1 is configured to draw a plurality of yarns Y spun from the spinning device 2, wind the yarns Y around a plurality of bobbins B, and form a plurality of packages P. Each yarn Y is a multifilament yarn having a plurality of filaments f (see fig. 5 (a) and (b)). The filaments f are, for example, synthetic fibers made of polyester fibers.

The spinning draft machine 1 includes a draft section 3 and a winding section 4. The drawing unit 3 is configured to draw the plurality of yarns Y spun from the spinning device 2. The drawing unit 3 includes, for example, a drawing device 10, a 1 st godet roller 11, a 2 nd godet roller 12, and a winding unit 13. The drawing device 10 is disposed below the spinning device 2. The drawing device 10 is configured to draw the yarn Y by including a plurality of drawing rolls, not shown. The 1 st godet roller 11 is a roller whose rotation axis direction is substantially parallel to the left-right direction. The 1 st godet 11 is disposed below the drawing unit 10. The 1 st godet roller 11 is driven to rotate by a motor not shown. The plurality of yarns Y spun from the spinning device 2 are fed to the 2 nd godet roller 12 in a state of being wound around the 1 st godet roller 11 in a row in the left-right direction. The 2 nd godet roller 12 is a roller whose rotation axis direction is substantially parallel to the left-right direction. The 2 nd godet roller 12 is disposed above and behind the 1 st godet roller 11. The 2 nd godet roller 12 is rotationally driven by a motor not shown. The plurality of yarns Y are fed from the 1 st godet 11 to the 2 nd godet 12, and further fed to the winding section 4. The yarn passage through which the yarn Y traveling from the 1 st godet 11 to the 2 nd godet 12 passes extends diagonally upward and rearward. The yarn passage has both vertical and longitudinal components and is substantially orthogonal to the horizontal direction. The interlacing unit 13 is disposed between the drawing device 10 and the 1 st godet roller 11 in the yarn running direction, for example. Alternatively, the interlacing unit 13 may be disposed between the 1 st godet roller 11 and the 2 nd godet roller in the yarn running direction. The interlacing unit 13 is configured to apply interlacing to each of the plurality of yarns Y (details will be described later).

The winding section 4 is configured to wind a plurality of yarns Y around a plurality of bobbins B to form a package P. The winding unit 4 is disposed below the drawing unit 3. The winding section 4 includes a plurality of fulcrum guides 21, a plurality of traverse guides 22, a turn table 23, two bobbin holders 24, and a contact roller 25.

The plurality of fulcrum yarn guides 21 are yarn guides serving as fulcrums when the yarn Y is traversed by the respective traverse yarn guides 22. The plurality of fulcrum guides 21 are provided corresponding to the plurality of yarns Y, respectively. The plurality of fulcrum guides 21 are arranged in the front-rear direction. Similarly to the plurality of fulcrum guides 21, the plurality of traverse guides 22 are provided corresponding to the plurality of yarns Y, respectively. The plurality of traverse guides 22 are arranged in the front-rear direction. The traverse guide 22 is configured to traverse the yarn Y in the front-rear direction by being driven by, for example, a traverse motor not shown. The turntable 23 is a disc-shaped member having a rotation axis direction substantially parallel to the front-rear direction. The turntable 23 is rotationally driven by a turntable motor not shown. The two bobbin holders 24 have their rotation axes substantially parallel to the front-rear direction and are rotatably supported by the upper end portion and the lower end portion of the turn table 23. A plurality of bobbins B corresponding to the plurality of yarns Y are mounted on each bobbin holder 24 in a front-rear direction in a row. The plurality of bobbins B are rotatably supported by the bobbin holder 24. The two bobbin holders 24 are each independently rotationally driven by a winding motor, not shown. The contact roller 25 is a roller whose rotation axis direction is substantially parallel to the front-rear direction, and is disposed immediately above the upper bobbin holder 24. The contact roller 25 is in contact with the surface of the plurality of packages P supported by the upper bobbin holder 24, thereby applying a contact pressure to the surface of the package P being wound, and adjusting the shape of the package P.

In the winding section 4 having the above configuration, when the upper bobbin holder 24 is rotationally driven, the yarn Y traversed by the traverse guide 22 is wound around the bobbin B to form the package P. When the package P is full, the vertical positions of the two bobbin holders 24 are changed by rotating the turn table 23. As a result, the bobbin holder 24 positioned on the lower side moves to the upper side, and the yarn Y can be wound around the bobbin B mounted on the bobbin holder 24 to form the package P. The bobbin holder 24 to which the full package P is mounted moves to the lower side. The package P that has become full is collected by, for example, a package collecting device not shown.

(Trace unit)

Next, the structure and function of the crossbar unit 13 will be described with reference to fig. 2 to 5. Fig. 2 is a cross-sectional view of a crosswinding device 30 described later, which is orthogonal to the left-right direction. Fig. 3 is a sectional view taken along line III-III of fig. 2. Fig. 4 is a sectional view taken along line IV-IV of fig. 2. Fig. 5 (a) is an explanatory diagram showing a crossing point Pi (described later) of the yarn Y. Fig. 5 (b) is an explanatory view illustrating a cross section of the filament Y. In fig. 2 and below, it is desirable to note that both outer end portions of the yarn Y are indicated by a two-dot chain line (details will be described later) taking into consideration the thickness of the entire yarn Y.

The interlacing unit 13 is configured to apply interlacing to each of the plurality of yarns Y by, for example, compressed air (fluid of the present invention). The entanglement is generally a process of entanglement of a plurality of filaments f constituting each yarn Y in order to prevent the plurality of filaments f (see broken lines in fig. 5 (a) and (b)) from being excessively separated from each other.

In the present embodiment, for convenience of explanation, it is assumed that the interlace unit 13 has a plurality of interlace devices 30. In the present embodiment, the plurality of interlacing devices 30 apply interlacing to 1 yarn Y, respectively. In the following, only one of the plurality of spooling devices 30 will be described. Hereinafter, a direction in which the later-described interlace portion 32 extends long is referred to as a 1 st direction. The right side of the drawing sheet of fig. 2 is one side in the 1 st direction, and the left side of the drawing sheet of fig. 2 is the other side in the 1 st direction. In the spinning and drawing machine 1, the 1 st direction is substantially parallel to a yarn passage of the yarn Y traveling from the drawing device 10 to the 1 st godet roller 11 (see fig. 1). A direction orthogonal to both the 1 st direction and the left-right direction is a height direction of the crosser 30 (hereinafter, simply referred to as a height direction). The upper side of the drawing sheet of fig. 2 is one side in the height direction, and the lower side of the drawing sheet of fig. 2 is the other side in the height direction. The nozzle extending direction intersecting the 1 st direction and in which the injection holes 41b described later extend is defined as the 2 nd direction. In the present embodiment, the left-right direction is also referred to as the 3 rd direction. The 3 rd direction is orthogonal (intersects) the 2 nd direction when viewed from the 1 st direction (see fig. 4).

As shown in fig. 2, the entanglement device 30 includes a base member 31, an entanglement unit 32, and two restricting wire guides 33 (restricting wire guides 34, 35. restricting unit of the present invention). The base member 31 is, for example, a plate-like member extending in the 1 st direction and the left-right direction (3 rd direction). A crosswinding portion 32 and restricting guides 34 and 35 are fixed to one surface of the base member 31 in the height direction. A flow path 31a through which compressed air flows is formed in the base member 31. The flow path 31a is connected to a compressed air source not shown.

As shown in fig. 2, the crossroad portion 32 extends in the 1 st direction. The interlace unit 32 includes, for example, a 1 st interlace sheet 41 and a 2 nd interlace sheet 42 (see fig. 2 and 4). The 1 st interlace sheet 41 is a substantially rectangular parallelepiped member. The 1 st crossweb 41 extends in the 1 st direction. The 1 st crossweb 41 is fixed to the base member 31. A recess 41a (see fig. 4) having a substantially U-shape when viewed from the 1 st direction is formed in a height direction side portion of the 1 st cross piece 41 (i.e., a portion farther from the base member 31 in the height direction). The recess 41a extends over the entire 1 st direction area of the 1 st interlace sheet 41. The 2 nd interlacing member 42 is a substantially rectangular parallelepiped member. The 2 nd crossweb 42 extends in the 1 st direction. The 2 nd crosswinding piece 42 is fixed to a surface on one side in the height direction of the 1 st crosswinding piece 41 (i.e., a surface on the side farther from the base member 31 in the height direction). A recess 42a (see fig. 4) having a substantially inverted U-shape when viewed from the 1 st direction is formed in the other side portion in the height direction of the 2 nd member (i.e., the portion closer to the base member 31 in the height direction). The recessed portion 42a extends over the entire 1 st direction area of the 2 nd interlace sheet 42. The recessed portion 41a of the 1 st interlacing member 41 and the recessed portion 42a of the 2 nd interlacing member 42 form a yarn running space 43 in which the yarn Y can run in the 1 st direction. Further, the 1 st crosswind piece 41 and the 2 nd crosswind piece 42 form a slit 44 along the 1 st direction. When the yarn Y is hooked to the crosswinding device 30 (i.e., when the yarn is hooked), the yarn Y is put into the yarn advancing space 43 from the external space through the slit 44.

As shown in fig. 2, for example, the ejection hole 41b penetrating at least in the height direction is formed in the 1 st cross member 41 at the 1 st direction center portion and the other side portion in the height direction (i.e., the portion closer to the base member 31 in the height direction). The nozzle extending direction (2 nd direction) in which the ejection holes 41b extend has, for example, a component in the height direction and a component in the 1 st direction. The injection hole 41b is connected to both the flow path 31a and the yarn running space 43.

The two restricting guides 33 (restricting guides 34 and 35) are configured to restrict movement of the yarn Y in the 3 rd direction. Each of the restricting guides 33 is, for example, a flat plate-like member extending in the height direction. Each of the restricting guides 33 is fixed to one surface of the base member 31 in the height direction. Each of the restricting yarn guides 33 is disposed at a position separated from the crossing portion 32 in the 1 st direction. The yarn guide 34 is disposed on one side of the crosswinding section 32 in the 1 st direction (upstream side in the yarn running direction). The yarn guide 35 is disposed on the other side of the crosswinding section 32 in the 1 st direction (downstream side in the yarn running direction). Each of the restricting guides 33 has, for example, a substantially U-shaped groove 33a when viewed from the 1 st direction. Side surfaces 33b are formed on both sides of the groove 33a in the left-right direction (see fig. 3). The width of the groove 33a in the 3 rd direction (the distance between the two side surfaces 33b in the 3 rd direction) is, for example, W1 (see fig. 3). The movement of the yarn Y in both sides in the 3 rd direction is restricted by the groove 33 a. Thereby, the center position of the yarn Y running in the yarn running space 43 in the 3 rd direction is defined.

In the interlacing device 30 having the above configuration, when the compressed air supplied from the compressed air source is injected into the yarn running space 43 through the flow path 31a and the injection hole 41b, the injection flow comes into contact with the yarn Y (a plurality of filaments f) running in the yarn running space 43. The plurality of filaments f are spread (opened) and swirled in the thread running space 43 by the jet flow. As a result, a region where the plurality of filaments f are entangled with each other is formed (the entanglement point Pi. is referred to fig. 5). The entanglement point Pi moves downstream in the yarn running direction as the yarn Y runs. The filaments f are again opened and rotated with the intersection point Pi as a convergence point, and are again entangled at a position different from the intersection point Pi. By repeating this operation, a plurality of intersections Pi are formed at substantially constant intervals on the yarn Y.

Here, it is generally known that the distance between the intersection points Pi is difficult to be completely controlled, and varies to some extent. If there is a portion where the distance between the intersection points Pi is long (i.e., a portion where the filaments f are easily separated from each other), the following problem may occur. For example, in the package P formed by winding the yarn Y around the bobbin B, the yarn Y on the outer layer (the layer on the radially outer side of the package P) is likely to be caught by the yarn Y on the inner layer (the layer on the radially inner side of the package P). As a result, the yarn Y may not be normally unwound from the package P in the subsequent step. In order to suppress such a problem, it is necessary to more efficiently apply crossovers to the yarn Y. However, if the pressure or flow rate of the compressed air is simply increased, the force applied to the yarn Y becomes too strong, and there are problems such as a decrease in yarn quality and an increase in running cost due to the yarn Y coming into contact with the inner wall surface of the yarn running space 43. Therefore, in the present embodiment, since the efficiency of applying the entanglement to the yarn Y can be improved without increasing the pressure or the flow rate of the compressed air, the entanglement device 30 further has the following configuration.

(widening thread guide)

As shown in fig. 2 and 3, the crosswinding apparatus 30 includes two widening guides 50 (widening guides 51 and 52, a widening section of the present invention). The widening guides 51 and 52 are, for example, round bar-shaped (rod-shaped) members extending in the 3 rd direction. The widening guides 51 and 52 are non-rotatably attached to the base member 31. The widening yarn guide 51 is disposed on the other side (downstream side in the yarn running direction) in the 1 st direction of the restricting yarn guide 34 and on the one side (upstream side in the yarn running direction) in the 1 st direction of the crosswinding portion 32. In other words, the widening guide 51 is disposed between the restricting guide 34 and the crossing portion 32 in the 1 st direction. The widening yarn guide 52 is disposed on the other side (downstream side in the yarn running direction) in the 1 st direction of the crosswinding section 32 and on the one side (upstream side in the yarn running direction) in the 1 st direction of the restricting yarn guide 35. In other words, the widening wire guide 52 is disposed between the crossing portion 32 and the restricting wire guide 35 in the 1 st direction. The widening guides 51, 52 are configured such that a part thereof overlaps the thread running space 43 when viewed from the 1 st direction. Thereby, the widening guides 51, 52 come into contact with the running thread Y. The widening guides 51 and 52 are disposed such that the end on one side in the height direction (i.e., the end on the side farther from the base member 31 in the height direction) is in contact with the yarn Y. The yarn Y is bent by the widening guides 51, 52. As shown in fig. 2, the cross-sections of the widening guides 51 and 52 perpendicular to the 3 rd direction are, for example, substantially circular. In other words, the contact portion 51a of the widening wire guide 51 and the contact portion 52a of the widening wire guide 52 that contact the yarn Y are curved in a convex shape. The widening guide 51 is disposed at a position where at least a part of the contact portion 51a overlaps the thread running space 43 when viewed from the 1 st direction. Similarly, the widening guide 52 is disposed at a position where at least a part of the contact portion 52a overlaps the thread running space 43 when viewed from the 1 st direction. Accordingly, the widening guides 51 and 52 can also function as guides for appropriately introducing the yarn Y into the yarn running space 43.

The running yarn Y contacts the widening yarn guide 51 disposed on the upstream side of the yarn running direction of the crosswinding section 32, and resistance is applied to the yarn Y by the widening yarn guide 51. Thereby, the yarn Y is widened in the 3 rd direction. More specifically, a portion of the yarn Y that runs downstream of the widening yarn guide 51 in the yarn running direction and upstream of the widening yarn guide 52 in the yarn running direction is widened in the 3 rd direction (see fig. 2 to 4). As a specific shape of the yarn Y in the yarn running space 43, the yarn Y having the plurality of filaments f has a flat shape having a large cross section in the 3 rd direction and a small cross section in the 2 nd direction as a whole (see fig. 4). The widening guide 50 preferably has a width in the 3 rd direction of the yarn Y running in the yarn running space 43 larger than a width in the 3 rd direction of a portion of the yarn Y restricted by the restricting guide 33 (for example, the above-mentioned W1). When the size of the injection hole 41b in the 3 rd direction is set to be W2 (see fig. 4) larger than W1, the yarn Y is preferably widened such that the width of the yarn Y in the 3 rd direction in the yarn running space 43 substantially coincides with W2 (close to W2).

By widening the yarn Y in this manner, the area of the portion of the yarn Y traveling in the yarn traveling space 43 facing the injection hole 41b in the 2 nd direction becomes large. This enables the compressed air to be efficiently injected into the yarn Y. Therefore, even if the pressure or flow rate of the compressed air is not increased, the jet flow of the compressed air can be effectively applied to the yarn Y. Accordingly, the present inventors considered that the yarn Y can be efficiently opened and twisted as compared with the conventional yarn, and the efficiency of interlacing the yarn Y can be improved.

(evaluation of efficiency of applying crossovers)

In order to confirm that the efficiency of interlacing the yarn Y by the interlacing device 30 is actually improved, the present inventors performed the following evaluation. As a summary, the present inventors prepared two types of crosser apparatuses as examples (examples 1 and 2, details of which will be described later), and prepared two types of crosser apparatuses as comparative examples (comparative examples 1 and 2, details of which will be described later). The present inventors produced 4 kinds of yarns Y using the total of 4 kinds of crosser apparatuses in a spinning draw machine having the same configuration as the spinning draw machine 1. The present inventors counted the number of crossovers Pi formed per predetermined length of the yarn Y, and evaluated the application efficiency of crossovers.

The details of the evaluation will be described below with reference to fig. 6 to 9. Fig. 6 is a cross-sectional view of the entanglement device 100 of comparative example 1. Fig. 7 is a cross-sectional view of the interlacing device 100 of comparative example 2. Fig. 8 (a) is an explanatory view showing a cross-sectional shape of the yarn Y in examples 1 and 2. Fig. 8 (b) is an explanatory view showing the cross-sectional shape of the yarn Y in comparative example 1. Fig. 8 (c) is an explanatory view showing the cross-sectional shape of the yarn Y in comparative example 2. Fig. 9 is a table showing the evaluation results of the efficiency of applying crossovers to the yarn Y.

First, details of the interlacing devices of examples and comparative examples will be described. The entanglement devices of both embodiments 1 and 2 have the same configuration as the entanglement device 30. In both of examples 1 and 2, the yarn Y in the yarn running space 43 is widened in the 3 rd direction (see fig. 8 (a)). For convenience of description, such a cross-sectional shape of the yarn Y is referred to as "flat" (see fig. 9). The differences between example 1 and example 2 are as follows. In example 1, the width of the groove 33a of the guide wire 33 in the 3 rd direction (i.e., W1) was limited to 0.5mm (see fig. 9). In example 2, W1 was 1.0mm (see FIG. 9) and was larger than W1 in example 1.

The interlacing device of comparative example 1 has no widening yarn guide 50. The construction of this interlacing device is the same as the interlacing device 100 shown in fig. 6. The interlacing device 100 is substantially the same as the interlacing device 30 from which the widening guide 50 is removed. In comparative example 1, the yarn Y was not widened (see fig. 6 and fig. 8 (b)). In comparative example 1, W1 was 0.5mm as in example 1. The entanglement device of comparative example 2 has the same configuration as the entanglement device 100 shown in fig. 7. In comparative example 2, as shown in fig. 7, the entire interlacing device 100 is inclined in the left-right direction with respect to the yarn passage from the 1 st godet roller 11 toward the 2 nd godet roller 12. In other words, the 1 st direction is inclined in the left-right direction. That is, the 1 st direction is not orthogonal to the left-right direction. The angle of inclination is approximately 7 degrees. Thus, in comparative example 2, the yarn Y is pressed against the side surface 33b of the restriction yarn guide 33. Therefore, the resistance is applied to the yarn Y by the side surface 33 b. Thus, in comparative example 2, the yarn Y was widened in the direction perpendicular to the 3 rd direction (see fig. 8 (c)). For comparison with examples 1 and 2, the cross-sectional shape of the yarn Y is referred to as "longitudinal flattening". In comparative example 2, W1 was 0.5mm as in example 1.

The production conditions of the yarn Y were the same in examples 1 and 2 and comparative examples 1 and 2, except for the difference in the interlacing devices. The common conditions will be described below. The type of the yarn Y is polyester fiber. The thickness of the yarn Y was 83 dtex. The number of filaments contained in the yarn Y was 36. The pressure of the compressed air supplied to each crosser was 0.35 MPa. These common conditions are only conditions appropriately determined to actually compare the application efficiency of crossovers. Namely, it is desired to pay attention to: even when these common conditions are changed, it is expected that the same comparison result can be obtained.

Next, a method of evaluating the efficiency of applying crossovers to the yarn Y will be described. The present inventors counted the number of the crossing points Pi over a predetermined length (1000m) in each of the 4 kinds of yarns Y, and measured the pitch between the crossing points Pi. The counting of the number and the measurement of the pitch are specifically performed as follows. That is, the crossovers Pi included in the yarn Y unwound and running from the formed package P are detected by an crossovers detector, ITEMAT + (trademark) manufactured by Textechno corporation. In addition, information on the number of intersection points Pi and information on the pitch between the intersection points Pi are stored in a computer device, not shown. The application efficiency of the crossovers was evaluated using this information.

Fig. 9 shows the number of intersections Pi per unit length (1m) (hereinafter referred to as the average number of intersections) in examples 1 and 2 and comparative examples 1 and 2. As the average number of crossovers increases, the average distance between the crossovers Pi decreases, and it can be evaluated that crossovers are more efficiently applied to the yarn Y. The average number of crossovers in example 1 was 18.5/m. The average number of crossovers in example 2 was 19.2/m. The average number of crossovers in comparative example 1 was 18.3 pieces/m. The average number of crossovers in comparative example 2 was 17.2/m.

From the above results, at least two conclusions can be derived. As the 1 st conclusion, when example 1, which is the same as W1, is compared with comparative examples 1 and 2, the wider the width of the yarn Y in the 3 rd direction, the larger the average number of crossovers. The reason for this is considered to be that, as described above, since the filament Y is widened in the 3 rd direction, the jet flow can efficiently contact with the filament Y. As the 2 nd conclusion, when comparing example 1 and example 2 in which W1 is different from each other, the average number of crossovers is larger in example 2 in which W1 is wider. The reason for this is considered to be that, in the case where the width in the 3 rd direction before the yarn Y is widened is wide to some extent, the yarn Y is easily widened further by the widening yarn guide 50.

As described above, the center position of the yarn Y in the 3 rd direction can be specified by the regulating guide 33. The yarn Y can travel in the yarn travel space 43 while being widened in the 3 rd direction by the widening yarn guide 50. This enables the compressed air injected in the 2 nd direction through the injection hole 41b to efficiently contact the yarn Y. Therefore, even if the pressure or flow rate of the compressed air is not increased, the compressed air can be effectively applied to the yarn Y, and the yarn Y can be efficiently opened and swirled. This can improve the efficiency of applying entanglement to the yarn Y without increasing the pressure or flow rate of the compressed air.

In the 3 rd direction, the width of the yarn Y widened by the widening yarn guide 50 is larger than the width of the yarn Y defined by the restricting yarn guide 33 in the related art. This enables the compressed air injected through the injection holes 41b to efficiently contact the yarn Y.

Further, the widening guide 50 widens the filament Y such that the width of the filament Y in the 3 rd direction substantially coincides with the size (W2) of the ejection orifice 41b in the 3 rd direction (close to W2, that is, the difference between the width of the filament Y in the 3 rd direction and W2 is reduced). This allows the compressed air injected through the injection holes 41b to contact the yarn Y as efficiently as possible.

Further, the thread Y running in the 1 st direction can be widened in the 3 rd direction by applying resistance to the thread Y by the bar-shaped widening guide 50. This allows the yarn Y to be widened with a simple structure.

Further, the contact portion 51a of the widening guide 51 and the contact portion 52a of the widening guide 52 are disposed at positions overlapping the yarn running space when viewed from the 1 st direction. Accordingly, the widening guides 51 and 52 can also function as guides for appropriately introducing the yarn Y into the yarn running space 43. This can simplify the structure of the crosser 30.

Further, the contact portion 51a of the widening guide 51 contacting the yarn Y and the contact portion 52a of the widening guide 52 contacting the yarn Y are bent. Therefore, as compared with the case where the contact portions 51a, 52a have corners, it is possible to suppress the damage to the running yarn Y due to widening of the yarn guide 50. This can suppress yarn breakage.

In addition, the widening guide 50 cannot rotate. Therefore, as compared with the configuration in which the widening guide 50 rotates in accordance with the travel of the yarn Y, resistance can be applied to the yarn Y efficiently. This enables the yarn Y to be widened efficiently.

Further, the spinning and drawing machine 1 including the crosswinding device 30 can form the package P using the yarn Y to which crosswinding is stably applied. Therefore, unwinding failure of the yarn Y due to the yarn Y wound around the outer layer P being caught by the yarn Y wound around the inner layer P can be suppressed.

Next, a modification of the above embodiment will be described. Here, the same reference numerals are given to portions having the same configuration as in the above embodiment, and the description thereof will be appropriately omitted.

(1) In the above embodiment, the end portions of both the widening guides 51 and 52 on one side in the height direction (i.e., the end portions on the side farther from the base member 31 in the height direction) are arranged to contact the yarn Y, but the arrangement is not limited thereto. In one or both of the widening guides 51 and 52, the end portion on the other side in the height direction (that is, the end portion on the side closer to the base member 31 in the height direction) may be arranged to contact the yarn Y. In such a configuration, the yarn Y can be widened in the 3 rd direction by applying resistance to the yarn Y.

(2) In the embodiments described above, the widening guide 50 is not rotatable, but is not limited thereto. For example, the widening yarn guide 50 may be a roller configured to be driven and rotatable with the 3 rd direction as the rotation axis direction. In such a configuration, when the widening guide 50 can rotate at the same peripheral speed as the running speed of the yarn Y, it is difficult to apply resistance to the yarn Y, and therefore the yarn Y is difficult to widen. Accordingly, a resistance applying portion (not shown) that applies resistance to the rotation of the widening guide 50 is preferably provided. This makes it possible to widen the yarn Y in the 3 rd direction while suppressing abrasion of the widening yarn guide 50 due to rubbing of the yarn Y.

(3) In the embodiments described above, the contact portion 51a of the widening guide 51 that contacts the yarn Y and the contact portion 52a of the widening guide 52 that contacts the yarn Y are curved, but the present invention is not limited thereto. The contact portions 51a, 52a may have angles to the extent that damage to the filament Y becomes extremely small, for example.

(4) In the embodiments described above, at least a part of the contact portion 51a of the widening guide 51 is disposed at a position overlapping the thread running space 43 when viewed from the 1 st direction. However, the present invention is not limited thereto. The contact portion 51a may not necessarily be disposed at a position overlapping the thread running space 43 when viewed from the 1 st direction. The same applies to the configuration of the contact portion 52a of the widening wire guide 52. In this case, a guide member (not shown) for appropriately introducing the yarn Y into the yarn running space 43 needs to be disposed between the crosswinding portion 32 and the widening yarn guide 51 (or the widening yarn guide 52) in the 1 st direction.

(5) In the embodiments described above, the widening guide 50 widens the yarn Y such that the width of the yarn Y in the 3 rd direction substantially coincides with the size (W2) of the squirt hole 41b in the 3 rd direction (i.e., the width of the yarn Y in the 3 rd direction is smaller than the difference W2), but the invention is not limited thereto. The width of the thread Y widened by the widening thread guide 50 in the 3 rd direction may be smaller than W2.

(6) In the embodiments described above, the widening guides 50 are disposed on both sides of the crosswinding portion 32 in the 1 st direction (both sides in the yarn running direction), but the invention is not limited thereto. For example, the widening guide 50 may be disposed only on the upstream side of the crosswinding portion 32 in the yarn running direction (that is, only the widening guide 51 may be provided as the widening portion of the present invention). In such a configuration, the yarn Y running in the yarn running space 43 can be widened to some extent. Alternatively, the widening yarn guide 50 (i.e., the widening yarn guide 52) may be disposed only on the downstream side of the crosswinding section 32 in the yarn running direction.

(7) In the embodiments described above, the crossbar unit 13 has a plurality of crossbar devices 30, and one crossbar device 30 of the crossbar devices 30 has been described. However, the present invention is not limited thereto. For example, the interlacing unit 13 may include one interlacing device 60 (see fig. 10 to 12) for applying interlacing to all of the plurality of yarns Y. Fig. 10 is a cross-sectional view of the crosser 60 perpendicular to the 1 st direction. Fig. 11 is a cross-sectional view of the crosser 60 perpendicular to the left-right direction. Fig. 12 is a sectional view taken along line XII-XII of fig. 11. The 1 st direction, the left-right direction, and the height direction are defined as in the above-described embodiments. The left-right direction is an arrangement direction in which the yarns Y are arranged (see fig. 10). The left side of the drawing sheet of fig. 10 is one side in the arrangement direction, and the right side of the drawing sheet of fig. 10 is the other side in the arrangement direction. Fig. 10 and 12 show only a part of the crosser 60 in the arrangement direction (described later). As will be described later, the definition of the nozzle extending direction (2 nd direction) and the 3 rd direction in the interlacing device 60 is different from that in the interlacing device 30.

The structure of the interlacing device 60 will be specifically described. As shown in fig. 10 and 11, the interlacing device 60 includes a base member 61, a plurality of interlacing members 62 (interlacing portions according to the present invention), two restricting guides 63 (see the restricting portions according to the present invention in fig. 11), and two widening guides 64 (see the widening portions according to the present invention in fig. 11). The base member 61 is provided with a flow path 61a and a plurality of supply ports 61 b. The flow path 61a extends in the arrangement direction and is connected to a compressed air source, not shown. The plurality of supply ports 61b are formed at one side end portion in the height direction of the base member 61. The plurality of supply ports 61b are arranged in the arrangement direction. The plurality of supply ports 61b are connected to the flow path 61 a. The supply ports 61b are connected to supply paths 73 described later. The plurality of crossovers 62 extend in the 1 st direction and the height direction, respectively. The plurality of entanglement sheets 62 are fixed to one surface of the base member 61 in the height direction. The plurality of interlace pieces 62 are arranged in the arrangement direction. As shown in fig. 10, a yarn running space 71, a slit 72, a supply passage 73, and a jet hole 74 are formed in each of the plurality of crosswebs 62. The yarn running space 71 penetrates the crossweb 62 in the 1 st direction. The slit 72 is formed at one end of the crosswind sheet 62 in the arrangement direction, and extends in the 1 st direction. The slit 72 is connected to the thread running space 71. The center position of the slit 72 in the height direction is substantially the same as the center position of the thread running space 71 in the height direction. The supply path 73 is disposed on the other side of the yarn running space 71 in the arrangement direction (i.e., on the opposite side of the yarn running space 71 from the slit 72 in the arrangement direction). The supply path 73 extends from the other end of the cross piece 62 to one side in the height direction (i.e., from the end of the cross piece 62 close to the base member 61 to the end distant from the base member 61 in the height direction). The supply passage 73 is connected to the supply port 61b of the base member 61. The ejection holes 74 are formed at the end of the other side of the crossweb 62 in the arrangement direction (i.e., the side opposite to the yarn running space 71 in the arrangement direction via the supply path 73). The injection hole 74 is connected to the supply passage 73. The injection holes 74 are formed at substantially the same positions as the slits 72 in the height direction. In other words, the center position of the ejection hole 74 in the height direction is substantially the same as the center position of the filament travel space 71 in the height direction. The ejection hole 74 is formed in the 1 st direction center portion of the interlace sheet 62 (see fig. 11). The injection holes 74 extend substantially parallel to the arrangement direction. That is, the nozzle extending direction (2 nd direction) in which the ejection holes 74 extend is different from the direction in which the ejection holes 41b (see fig. 2 and the like) extend. In this modification, a direction substantially parallel to the height direction when viewed from the 1 st direction is the 3 rd direction (see fig. 10). That is, the 3 rd direction is substantially orthogonal (intersecting) with the arrangement direction. The injection hole 74 formed in one of the interlace sheet 62 (e.g., the interlace sheet 62A) is adjacent to the slit 72 of the other interlace sheet 62 (e.g., the interlace sheet 62B) in the arrangement direction, and the other interlace sheet 62 is arranged adjacent to the other side of the interlace sheet 62A in the arrangement direction (i.e., the side opposite to the supply path 73 with the slit 72 therebetween in the arrangement direction). That is, the compressed air injected from the injection holes 74 formed in the interlacing bar 62A is injected into the yarn running space 71 formed in the interlacing bar 62B. In this way, the interlace sheet 62 (interlace sheet 62B) forming a certain yarn running space 71 and the interlace sheet 62 (interlace sheet 62A) forming the jet hole 74 connected to the yarn running space 71 may be different from each other. A slit 75 extending in the 1 st direction is formed between the end surface on the other side in the arrangement direction of the crosswind piece 62A and the end surface on one side in the arrangement direction of the crosswind piece 62B (that is, between the two end surfaces facing each other in the arrangement direction). The slit 75 is connected to the slit 72 and extends in the height direction. When the yarn Y is hooked to the interlacing device 60, the yarn Y is put into the yarn running space 71 from the external space through the slit 75 and the slit 72.

The two regulating yarn guides 63 (regulating yarn guides 81 and 82, see fig. 11 and 12) are configured to regulate the movement of the yarn Y in the 3 rd direction. The restricting yarn guide 81 is disposed on one side (upstream side in the yarn running direction) in the 1 st direction of the crosswinding sheet 62. The restricting yarn guide 82 is disposed on the other side (downstream side in the yarn running direction) in the 1 st direction of the crosswinding sheet 62. Each of the restricting wire guides 63 has, for example, the same shape as the restricting wire guide 33. The restricting wire guide 63 may have a groove 63a similar to the groove 33a of the restricting wire guide 33. The restricting guide 63 may have a side 63b similar to the side 33b of the restricting guide 33. The restricting guide 63 (and the restricting guide 33) may be configured to restrict the movement of the yarn Y in at least one side of the 3 rd direction. For example, in this modification, the movement of the yarn Y to the other side in the height direction (i.e., the side closer to the base member 61 in the height direction) is restricted by the groove 63 a. However, the restricting guide 63 (and the restricting guide 33) is preferably configured not to widen the yarn Y in a direction different from the 3 rd direction. For example, in this modification, the side surfaces 63b restrict the movement of the yarn Y in both sides in the arrangement direction. This suppresses widening of the yarn Y in the 2 nd direction. The shape of the restriction wire guide 63 is not limited to this. Instead of the restricting guide 63, for example, a cylindrical restricting guide (not shown) extending in the array direction may be provided. That is, the restricting wire guide may have a shape similar to the widening wire guide 50 (see fig. 2 and the like). By such a restricting guide, the movement of the yarn Y in the 3 rd direction can be restricted. In this case, a restricting groove (not shown) for suppressing the widening of the yarn Y in the 2 nd direction may be formed in the outer peripheral portion of the restricting guide.

The two widening guides 64 (widening guides 91 and 92, see fig. 11 and 12) are configured to widen the yarn Y in the 3 rd direction (in this modification, the height direction). The widening guide 91 is disposed between the restricting guide 81 and the crosswinding piece 62 in the 1 st direction. The widening yarn guide 92 is disposed between the crosswinding sheet 62 and the restricting yarn guide 82 in the 1 st direction. The widening wire guide 64 may be a round bar-shaped member extending in the height direction, for example. That is, the widening wire guide 64 may have the same shape as the widening wire guide 50. This allows resistance to the thread Y to be applied by widening the contact portions (contact portions 91a and 92a) of the thread guide 64 that contact the thread Y. This makes it possible to widen the width of the yarn Y in the height direction (direction 3) (see fig. 11 and 12).

The more detailed positional relationship of the limiting wire guide 63, the widening wire guide 64, and the wire running space 71 is as described below. That is, as shown in fig. 12, the center position between the side surface 63b of the yarn guide 81 and the contact portion 91a of the widening yarn guide 91 in the 2 nd direction is substantially the same as the center position of the yarn running space 71 in the 2 nd direction. Further, in the 2 nd direction, the center position between the side surface 63b of the regulating wire guide 82 and the contact portion 92a of the widening wire guide 92 is also substantially the same as the center position of the wire running space 71 in the 2 nd direction. Thereby, the thread Y widened (flattened) by the widening thread guide 64 passes through substantially the center of the thread running space 71 in the 2 nd direction.

The widening yarn guide 64 (and the widening yarn guide 50) may have any shape as long as it is configured to widen the yarn Y in the 3 rd direction. For example, a flat plate-like U-shaped wire guide (not shown) similar to the shape of the restricting wire guide 63 may be provided as the widening wire guide 64. In such a case, it is necessary to appropriately set the position and/or size of the groove so that the movement of the yarn Y in the 3 rd direction is not restricted by the groove (not shown) formed in the U-shaped yarn guide. The widening yarn guide 64 may be provided only on the upstream side or the downstream side of the crosswinding sheet 62 in the yarn running direction, as in the modification (6) described above.

(8) The crosser devices 30 and 60 may be applied to a textile machine that processes the running yarn Y, other than the spinning traction machine 1.

Claims (8)

1. An interlacing device for applying interlacing to a running yarn having a plurality of filaments, comprising:

a cross-winding unit having a yarn running space for running the yarn in a predetermined 1 st direction and an injection hole for injecting a fluid into the yarn running space in a 2 nd direction intersecting the 1 st direction, the cross-winding unit being configured to cross-wind the yarn with the fluid injected into the yarn running space from the injection hole;

a restricting section which is disposed at a position separated from the crossing section in the 1 st direction and restricts movement of the yarn in a 3 rd direction intersecting the 2 nd direction when viewed from the 1 st direction; and

and a widening section that is disposed between the crossing section and the restricting section in the 1 st direction and widens the yarn running in the yarn running space in the 3 rd direction.

2. The crossroad apparatus according to claim 1,

the widening section is configured to make a width of at least a portion of the yarn running in the yarn running space larger than a width of a portion of the yarn limited by the limiting section in the 3 rd direction.

3. Interlacing device according to claim 1 or 2,

the widening portion widens the thread so that a difference between a width of the thread in the 3 rd direction and a size of the injection hole in the 3 rd direction is reduced.

4. The crosstalking apparatus according to any one of claims 1 to 3, wherein,

the widened portion has a bar-shaped widened wire guide extending in the 3 rd direction.

5. The crosstalking apparatus according to any one of claims 1 to 4, wherein,

the widened portion is at least a part of a contact portion with the yarn, and is disposed at a position overlapping with the yarn running space when viewed from the 1 st direction.

6. The crosstalking apparatus according to any one of claims 1 to 5, wherein,

the widened portion is formed by bending a contact portion with the yarn.

7. The crosstalking apparatus according to any one of claims 1 to 6, wherein,

the widened portion does not rotate.

8. A yarn winding machine is characterized by comprising:

the crosser apparatus according to any one of claims 1 to 7; and

and a winding section that winds the yarn that has been wound by the winding device to form a package.

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