JP7549999B2 - Oil recovery device, yarn processing mechanism and yarn take-up device - Google Patents

Description

The present invention relates to an oil recovery device that recovers oil mist scattered from a yarn processing device that performs a predetermined treatment on a yarn by spraying a fluid into a yarn running space through which the yarn, to which an oil has been applied, runs, and to a yarn processing mechanism and a yarn take-up device that are equipped with the oil recovery device.

Conventionally, oil has been applied to yarns for the purpose of reducing friction, suppressing static electricity, improving package shape, and improving the uniformity of yarn heating. In a yarn processing device that performs a predetermined process on a yarn by injecting a fluid into a yarn traveling space through which the oil-applied yarn travels, part of the oil adhering to the yarn is blown away by the fluid injection and becomes an oil mist. When such oil mist is scattered from the yarn processing device, it may adhere to plastic parts and deteriorate the plastic parts, or the oil droplets may adhere to the yarn or package and reduce the yarn quality, or the surrounding area may become white and misty, which may worsen the on-site environment. For example, an intertwining device and a migration nozzle are known as the above-mentioned yarn processing device. The intertwining device is a device that intertwines the yarn by injecting a fluid. The migration nozzle is a device that homogenizes the oil applied to the yarn.

To solve the above problems, for example, Patent Document 1 discloses a technology in which a jet of water ejected from the yarn running space of the interlacing device is guided to a duct body, and the oil mist is converted into oil droplets and collected by a filter installed inside the duct body. In addition, Patent Document 2 discloses a technology for sucking in floating components such as the oil mist generated by the interlacing device.

JP 2017-218706 A JP 2017-509810 A

However, simply locating a duct body near the interlacing device as in Patent Document 1 means that much of the oil mist does not flow into the duct body, making it difficult to efficiently collect the oil mist. Furthermore, when collecting the oil mist by suction as in Patent Document 2, the amount of oil mist that can be collected depends heavily on the capacity of the suction device. However, suction devices that are installed in factories and the like are often used as is, and there is a limit to how much capacity can be increased. Furthermore, there is an issue that attempting to increase the capacity of the suction device is very costly.

In view of the above problems, the present invention aims to effectively collect the oil mist scattered from a yarn processing device at low cost.

The oil recovery device according to the present invention is an oil recovery device that recovers an oil mist scattered from a yarn processing device that performs a predetermined treatment on a yarn by injecting a fluid into a yarn running space through which the yarn, to which an oil has been applied, runs, and is characterized by comprising a housing that houses the yarn processing device and has a suction port formed therein, and a guide member that is disposed inside the housing and that guides a jet of the fluid from the yarn running space, which is generated by the injection of the fluid, to the suction port.

In the present invention, a suction port is formed in the housing that houses the yarn processing device, and the oil mist scattered from the yarn processing device is collected through the suction port. However, if a housing is simply provided, the oil mist will remain inside the housing if the suction power of the suction device is insufficient. The oil mist that remains around the yarn will be carried away by the accompanying flow and leak out of the housing. On the other hand, increasing the capacity of the suction device to suppress the leakage of the oil mist can lead to a significant increase in costs. Therefore, in the present invention, a guide member is provided that guides the jet from the yarn running space to the suction port. In this way, the momentum of the jet discharged from the yarn running space can be used to guide the oil mist to the suction port, and the oil mist can be effectively collected at low cost.

In the present invention, the guide member may be a duct member having an inlet for taking in the jet and an outlet for discharging the jet toward the suction port.

With this configuration, the jet can be reliably guided to the suction port by the duct member, so the oil mist can be collected more effectively. In addition, the fluid sprayed from the outlet of the duct member can be used to assist suction at the suction port of the housing.

In the present invention, it is preferable that the flow path area of a portion of the duct member that includes the exhaust port and is on the exhaust port side gradually decreases toward the exhaust port side.

With this configuration, the pressure of the fluid heading toward the outlet is increased, so the fluid can be discharged from the outlet while maintaining a certain degree of momentum when it was ejected from the yarn running space. This improves the suction assist effect of the fluid being ejected from the duct member, and ultimately allows the oil mist to be collected more effectively.

In the present invention, the duct member has a guide surface arranged in a direction intersecting the extension direction of the yarn traveling space, and the end of the guide surface on the inlet side is preferably located outside the yarn traveling space in the extension direction.

This configuration makes it easier to capture the jets of water ejected from both ends of the yarn running space into the duct member.

In the present invention, it is preferable that a portion of the guide surface on the inlet side, including the end portion on the inlet side, extends outside the yarn running space in the extension direction as it approaches the outlet side.

With this configuration, the jet from the yarn running space is more easily guided by the guide surface toward the discharge outlet, and disruption of the flow caused by collision with the guide surface can be reduced.

In the present invention, the guide surface may be curved from the end on the inlet side to the end on the outlet side.

If the guide surface has corners, the flow of the fluid is likely to become disrupted at those corners. In this regard, by making the guide surface a curved surface, the flow of the fluid can be made smoother.

In the present invention, the guide surfaces are provided in pairs on both sides of the yarn running space in the extension direction, and the pair of guide surfaces are preferably plane-symmetrical with respect to the center of the yarn running space in the extension direction.

With this configuration, the flow of fluid inside the duct member tends to be symmetrical, making the flow less likely to become turbulent.

In the present invention, a suction flow passage that communicates with the suction port may be formed between the inner surface of the housing and the outer surface of the duct member.

With this configuration, any oil mist that is not taken in by the duct member is sucked through the suction passage and out of the suction port, allowing the oil mist to be collected more effectively.

In the present invention, the duct member may be movable between a distant position away from the yarn processing device and a close position closer to the yarn processing device than the distant position.

The closer the duct member is placed to the yarn processing device, the more oil mist can be collected. However, this means that the duct member gets in the way when threading the yarn on the yarn processing device. Therefore, as described above, by making the duct member movable, it is possible to achieve both efficient collection of the oil mist and ease of threading.

In the present invention, the housing may be formed with an opening through which the thread passes, and an opening/closing member may be provided that can change the opening area of the opening.

The smaller the opening formed in the housing, the less oil mist can leak out of the housing. However, this makes it difficult to pass the yarn through the opening when threading the yarn on the yarn processing device. Therefore, as described above, by providing an opening/closing member at the opening, it is possible to reduce leakage of oil mist while also improving the ease of threading.

The yarn treatment mechanism according to the present invention is characterized by comprising a yarn treatment device that performs a predetermined treatment on the yarn by injecting a fluid into a yarn running space through which the yarn, to which an oil agent has been applied, runs, and any of the oil agent recovery devices described above.

As already explained, such a yarn processing mechanism can effectively collect the oil mist that scatters from the yarn processing device at low cost.

In the present invention, the yarn processing device has a yarn processing section in which the yarn running space is formed, a support member that supports the yarn processing section, and a jet guide member that is arranged outside the yarn processing section in the extension direction of the yarn running space, and the jet guide member preferably rises from the support member toward the guide member.

With this configuration, the jet from the yarn running space can be guided to the guide member by the jet guide member, and the oil mist can be collected more effectively.

In the present invention, the jet guide member preferably rises from the support member at an angle toward the outside of the yarn running space in the extension direction.

With this configuration, the jet from the yarn running space is more easily guided to the guide member by the jet guide member, and disturbance of the flow caused by collision with the jet guide member can be reduced.

In the present invention, it is preferable that the jet guide member has a guide groove into which the thread is inserted.

With this configuration, the jet guide member can also be used as a yarn guide member, which helps prevent an increase in the number of parts.

The spinning take-up device according to the present invention is characterized by comprising an oiling device that applies oil to the yarn, and any one of the yarn processing mechanisms described above that is arranged downstream of the oiling device in the yarn running direction.

As already explained, this type of spinning take-up device can effectively collect the oil mist that scatters from the yarn processing device at low cost.

FIG. 2 is a schematic diagram of a spun yarn take-up device including an intertwining mechanism according to the present embodiment. FIG. FIG. 2 is a cross-sectional view of an intertwining mechanism equipped with an oil agent recovery device. FIG. 2 is a cross-sectional view of an intertwining mechanism equipped with an oil agent recovery device. FIG. FIG. 13 is a diagram showing an air flow in the intertwining mechanism.

(Yarn take-up device)
An embodiment of the present invention will be described. Fig. 1 is a schematic diagram of a spinning take-up device equipped with an intertwining mechanism according to this embodiment. The top, bottom, front and rear directions shown in Fig. 1 are defined as the top, bottom, front and rear directions of the spinning take-up device 1, respectively.

The spinning take-up device 1 takes up multiple synthetic fiber yarns Y spun from the spinning device 100 and winds them onto multiple bobbins B to form multiple packages P. The spinning take-up device 1 has an oil guide 2 (corresponding to the oil application device of the present invention), a stretching device 3, a first take-up roller 4, an intertwining mechanism 5 (corresponding to the yarn processing mechanism of the present invention), a second take-up roller 6, and a winding device 7. In the spinning device 100, a polymer supplied from a polymer supply device (not shown) consisting of a gear pump or the like is extruded downward through a spinneret (not shown).

The multiple yarns Y spun from the spinning device 100 run along a yarn path along the oil guide 2, the drawing device 3, the first take-up roller 4, the intertwining mechanism 5, and the second take-up roller 6, aligned in a direction perpendicular to the plane of the paper in FIG. 1. Furthermore, the multiple yarns Y are distributed in the front-rear direction from the second take-up roller 6, and are wound onto multiple bobbins B by the winding device 7.

The multiple yarns Y spun from the spinning device 100 are oiled by the oil guide 2 and then sent to the drawing device 3. In this embodiment, the oil guide 2 is disposed between the spinning device 100 and the drawing device 3 in the yarn running direction, but the oil guide 2 can be disposed at any position upstream of the interlacing device 20 described below in the yarn running direction. The drawing device 3 is configured with multiple heating rollers (not shown) housed in a thermal insulation box. The drawing device 3 heats and draws the multiple yarns Y spun from the spinning device 100 using the multiple heating rollers.

The multiple yarns Y drawn by the drawing device 3 are sent to the winding device 7 by the first take-up roller 4 and the second take-up roller 6. Between the first take-up roller 4 and the second take-up roller 6, an entanglement mechanism 5 is arranged, which has an entanglement device 20 (corresponding to the yarn processing device of the present invention) that entangles the multiple filaments that make up the yarn Y. The entanglement mechanism 5 can be arranged at any position downstream of the oil agent guide 2 in the yarn running direction. For example, as shown by the dashed line in Figure 1, the entanglement mechanism 5 may be arranged between the drawing device 3 and the first take-up roller 4. The entanglement device 20 and the entanglement mechanism 5 will be described in detail later.

The winding device 7 has a machine base 11, a turret 12, two bobbin holders 13, a support frame 14, a contact roller 15, and a traverse device 16. The winding device 7 rotates the bobbin holder 13 to simultaneously wind multiple yarns Y sent from the second take-up roller 6 onto multiple bobbins B to form multiple packages P.

A disk-shaped turret 12 is attached to the machine base 11. The turret 12 is rotated by a motor (not shown). Two cylindrical bobbin holders 13 are cantilevered on the turret 12 and extend in the front-to-rear direction. A number of bobbins B are mounted on each bobbin holder 13 and aligned in the axial direction (front-to-rear direction). As the turret 12 rotates, the two bobbin holders 13 can move between an upper winding position and a lower retracted position.

The support frame 14 is a member that extends in the front-rear direction, and its rear end is fixed to the machine base 11. A roller support member 17 that extends in the front-rear direction is attached to the lower part of the support frame 14 so that it can move up and down relative to the support frame 14. A contact roller 15 that extends in the front-rear direction is supported on the roller support member 17 so that it can rotate freely. A predetermined contact pressure is applied to the package P by the contact roller 15, thereby adjusting the shape of the package P.

A traverse device 16 is disposed on the roller support member 17. The traverse device 16 has multiple traverse guides 16a arranged in the front-rear direction. The multiple traverse guides 16a are driven by a motor (not shown) and move back and forth in the front-rear direction. As the traverse guides 16a move back and forth with the yarn Y hooked on them, the yarn Y is swung back and forth around the fulcrum guide 18 and wound onto the corresponding bobbin B.

(Intertwining device)
FIG. 2 is a perspective view of the interlacing device 20. The extension direction in FIG. 2 refers to the direction in which the yarn running space 24a described below is extended. The arrangement direction refers to the direction in which multiple yarns Y are arranged, and is a direction perpendicular to the extension direction. The height direction refers to a direction perpendicular to both the extension direction and the arrangement direction. In this specification, for convenience, one side in the height direction (the upper side in FIG. 2) is called the upper side, and the other side (the lower side in FIG. 2) is called the lower side. However, the upper side and the lower side in the height direction do not necessarily have to coincide with the upper side and the lower side in the vertical direction (the upper side and the lower side shown in FIG. 1).

The intertwining device 20 entangles the yarn Y using compressed air (an example of a fluid in the present invention). The intertwining device 20 has a support member 21, an intertwining section 22 (corresponding to the yarn processing section of the present invention), and two yarn guide members 23 (corresponding to the jet guide members of the present invention). The support member 21 supports the intertwining section 22 and the two yarn guide members 23. The multiple intertwining pieces 24 and the two yarn guide members 23 that make up the intertwining section 22 rise from the support member 21 on the same side (upper side) in the height direction.

The intertwining section 22 has a configuration in which a plurality of intertwining pieces 24 are arranged in the arrangement direction. A yarn running space 24a penetrates each intertwining piece 24 in the extension direction, and the yarn Y runs through this yarn running space 24a. A yarn insertion path 24b for inserting the yarn Y into the yarn running space 24a is formed at the top between adjacent intertwining pieces 24. An injection port (not shown) for injecting compressed air toward the yarn running space 24a is formed at the center of the intertwining piece 24 in the extension direction. The yarn Y running through the yarn running space 24a is entangled by the action of the compressed air injected from the injection port. The injected compressed air is ejected as a jet from both ends of the yarn running space 24a.

The two yarn guide members 23 are arranged on both sides of the intertwining portion 22 in the extension direction with a gap between them. The yarn guide members 23 rise from the support member 21 and have a wall-like shape extending in the arrangement direction. The yarn guide members 23 rise from the support member 21 not directly upwards, but incline toward the outside of the intertwining portion 22 in the extension direction from the support member 21. The yarn guide members 23 are formed with multiple guide grooves 23a at equal intervals in the arrangement direction. The guide grooves 23a are slit-shaped and open upwards. The yarn paths of the multiple yarns Y in the intertwining device 20 are defined by inserting the multiple yarns Y into the corresponding guide grooves 23a.

Although not shown in FIG. 2, the interlacing device 20 is provided with a threading auxiliary member 25 (see FIGS. 3 and 4) that is used during threading. The threading auxiliary member 25 is a round bar-shaped member extending in the arrangement direction. One end of the threading auxiliary member 25 is fixed to an arm 26, and the threading auxiliary member 25 is attached to the support member 21 via the arm 26. In this embodiment, the threading auxiliary member 25 is supported at one end, but it may be supported at both ends. The arm 26 can swing around a fulcrum 27. This allows the threading auxiliary member 25 to move between a lower position shown in FIG. 3 and an upper position shown in FIG. 4.

(Oil recovery device)
In the intertwining device 20 configured as described above, a part of the oil adhering to the yarn Y is blown off and becomes an oil mist by the injection of compressed air. If such oil mist is scattered from the intertwining device 20 together with the jet from the yarn traveling space 24a, it may adhere to a resin part and deteriorate the resin part, or adhere to the yarn Y or the package P and degrade the yarn quality. Therefore, the intertwining mechanism 5 is provided with an oil recovery device 30 for recovering the oil mist scattered from the intertwining device 20.

Figures 3 and 4 are cross-sectional views of the intertwining mechanism 5 equipped with an oil recovery device 30, specifically, cross-sectional views in a cross section perpendicular to the arrangement direction. Figure 3 shows a state in which a duct member 32, which will be described later, is in a close position close to the intertwining device 20, and Figure 4 shows a state in which the duct member 32 is in a remote position away from the intertwining device 20. Figure 5 is a perspective view of the duct member 32.

3 and 4, the oil recovery device 30 has a housing 31 and a duct member 32 (corresponding to the guide member of the present invention). The housing 31 is a box-shaped member that houses the intertwining device 20 and the duct member 32. The upper end of the housing 31 is formed with a suction port 31a connected to the suction device 101. The suction port 31a is a nozzle extending in the height direction, and generates an upward suction force. The intertwining device 20 is disposed at the bottom of the housing 31, and the duct member 32 is disposed above the intertwining device 20. The intertwining device 20 is fixed, but the duct member 32 is movable in the height direction as described later. A suction flow path 49 communicating with the suction port 31a is formed between the inner surface of the housing 31 and the outer surface of the duct member 32. The oil recovery device 30 recovers the oil mist scattered from the intertwining device 20 by sucking it through the suction port 31a via the duct member 32 or the suction flow path 49.

The housing 31 is formed with an opening 31b for introducing multiple threads Y into the housing 31 and an opening 31c for leading multiple threads Y out of the housing 31. The openings 31b and 31c are provided with opening/closing members 33 and 34 that can change the opening area of the openings 31b and 31c.

The duct member 32 has the role of guiding the jet from the yarn running space 24a of the intertwining device 20 to the suction port 31a, and is arranged to cover the intertwining device 20. As shown in FIG. 5, the duct member 32 is a hollow member consisting of four sides 35-38, and extends in the height direction. An inlet 32a for taking in the jet is formed at the lower end of the duct member 32, and an outlet 32b for discharging the jet toward the suction port 31a is formed at the upper end. The inlet 32a completely includes the intertwining device 20 when viewed in the height direction. The outlet 32b is formed at a position opposite the suction port 31a, and its opening area is smaller than that of the inlet 32a.

A pair of side surfaces 35, 36 facing each other in the extension direction correspond to the guide surfaces of the present invention. Hereinafter, they are referred to as the guide surfaces 35, 36. The guide surfaces 35, 36 are arranged in a direction intersecting the extension direction of the yarn running space 24a. A pair of side surfaces 37, 38 facing each other in the arrangement direction are planes parallel to a plane perpendicular to the arrangement direction. As shown in FIG. 5, a slider 39 is fixed to the side surface 38. A rail member 40 extending in the height direction is fixed to the inner surface of the housing 31, and the slider 39 is slidably engaged with the rail member 40. As a result, the duct member 32 is movable in the height direction between the close position (position shown in FIG. 3) and the separated position (position shown in FIG. 4). The movement of the duct member 32 may be performed manually by an operator, or a drive device for moving the duct member 32 may be provided.

It is preferable to provide a positioning means for positioning the duct member 32 at the close position and the separate position. For example, positioning at the close position may be performed by abutting the lower end of the duct member 32 with a stopper (not shown) provided on the interlacing device 20. Positioning at the separate position may be performed by engaging the housing 31 with the duct member 32 using an engaging means such as a latch. Of course, other configurations of the positioning means may also be adopted.

The pair of guide surfaces 35, 36 are curved surfaces when viewed from the arrangement direction, and are plane symmetrical with respect to the center of the interlacing device 20 (yarn running space 24a) in the extension direction. When viewed from the extension direction, the lower ends of the guide surfaces 35, 36 partially overlap with the yarn guide member 23. In detail, in the height direction, the lower ends of the guide surfaces 35, 36 are located below the upper end of the yarn guide member 23 and above the lower end of the guide groove 23a. The lower ends of the guide surfaces 35, 36 are located outside the yarn running space 24a in the extension direction, and further outside the upper end of the yarn guide member 23. This makes it easy to take the jet from the yarn running space 24a into the inside of the duct member 32.

A part of the lower side (inlet 32a side) of the guide surfaces 35, 36 including the lower end is a first curved portion 35a, 36a that spreads outward from the intertwining portion 22 in the extension direction as it approaches the upper side (exhaust port 32b side). The first curved portions 35a, 36a are curved so as to bulge outward in the extension direction. A part of the upper side of the guide surfaces 35, 36 including the upper end is a second curved portion 35b, 36b that approaches each other as it approaches the upper side. The second curved portions 35b, 36b are curved so as to be concave inward in the extension direction. The first curved portion 35a and the second curved portion 35b are continuous, and the first curved portion 36a and the second curved portion 36b are continuous.

Duct member 32 has a flow passage area (area inside duct member 32 in a cross section perpendicular to the height direction) that gradually increases toward the upper side until the middle due to first curved portions 35a, 36a. In addition, duct member 32 has a flow passage area that gradually decreases toward the upper side from the middle due to second curved portions 35b, 36b. The tangent direction at the lower end of first curved portions 35a, 36a is approximately the same as the inclination of thread guide member 23.

(Threading work)
The procedure for threading the intertwining device 20 housed in the housing 31 will be described with reference to Figures 3 and 4. The front surface of the housing 31 in Figures 3 and 4 is an openable and closable door (not shown), and threading the intertwining device 20 can be performed by opening the door.

When starting the threading operation, as shown in FIG. 4, the duct member 32 is moved to a separate position away from the interlacing device 20. Then, the opening/closing members 33 and 34 are opened, and the threading assistant member 25 is moved to the upper position. When the opening/closing members 33 and 34 are opened, the opening area of the openings 31b and 31c is maximized, making it easy to pass multiple threads Y through the openings 31b and 31c during the threading operation.

Next, using a suction gun (not shown), multiple threads Y are wound around the first take-up roller 4 (see FIG. 1) and then introduced into the housing 31 through the opening 31b. The multiple threads Y are then hung on the threading auxiliary member 25, led out of the housing 31 through the opening 31c, and wound around the second take-up roller 6. In this state, when the threading auxiliary member 25 is lowered to the lower position, the multiple threads Y are inserted into the guide grooves 23a of the thread guide member 23, as shown in FIG. 3.

Next, the duct member 32 is lowered to a position close to the intertwining device 20, and the duct member 32 covers the intertwining device 20. Finally, the opening and closing members 33 and 34 are closed to complete the threading operation on the intertwining device 20. When the opening and closing members 33 and 34 are closed, the opening area of the openings 31b and 31c becomes the minimum area required for multiple yarns Y to pass through, and leakage of the oil mist can be suppressed.

(Air flow)
6 is a diagram showing the air flow in the intertwining mechanism 5, with the main air flow indicated by arrows. The jets of air ejected from both ends of the yarn traveling space 24a of the intertwining device 20 flow directly along the extension direction and collide with the yarn guide member 23. The jets of air that collide with the yarn guide member 23 cannot flow downward due to the presence of the support member 21, and most of the jets of air flow upward and into the duct member 32 through the inlet 32a. At this time, since the yarn guide member 23 is inclined diagonally upward and outward, the jets of air that collide with the yarn guide member 23 are easily guided upward, and disturbance of the flow caused by collision with the yarn guide member 23 can be suppressed.

The jet of air that flows into the inside of the duct member 32 mainly flows along the guide surfaces 35 and 36. Since the first curved portions 35a and 36a are widened outward, the flow that is moving diagonally upward and outward along the yarn guide member 23 can be smoothly directed upward. Since the distance between the second curved portions 35b and 36b gradually narrows toward the discharge port 32b, the flow passage area inside the duct member 32 gradually decreases. As a result, the pressure of the air toward the discharge port 32b is increased, so that the momentum at the time of the jet from the yarn running space 24a can be maintained to a certain extent, and the air is discharged from the discharge port 32b toward the suction port 31a with force. Since the air blown out from the discharge port 32b of the duct member 32 can be used to assist the suction at the suction port 31a of the housing 31, the oil mist can be efficiently collected.

Meanwhile, some of the oil mist scattered from the interlacing device 20 leaks out of the duct member 32 through the gap between the yarn guide member 23 and the duct member 32, or through the guide groove 23a of the yarn guide member 23. However, since a suction passage 49 is formed between the housing 31 and the duct member 32, the oil mist that is not taken in by the duct member 32 is also guided to the suction port 31a together with the air flow in the suction passage 49 and collected. At this time, the air is forcefully discharged from the exhaust port 32b as described above, so that the air in the suction passage 49 can be sucked in by negative pressure, and the oil mist floating in the suction passage 49 can be collected well.

(effect)
In this embodiment, the suction port 31a is formed in the housing 31 that houses the intertwining device 20, and the oil mist scattered from the intertwining device 20 is collected through the suction port 31a. However, if the housing 31 is simply provided, the oil mist will remain in the housing 31 if the suction force of the suction device 101 is insufficient. The oil mist that remains around the yarn Y will leak out of the housing 31 along with the accompanying flow. Increasing the capacity of the suction device 101 to suppress the leakage of the oil mist may lead to a significant increase in costs. Therefore, in this embodiment, a guide member (duct member 32) that guides the jet from the yarn traveling space 24a to the suction port 31a is provided. In this way, the oil mist can be guided to the suction port 31a by utilizing the momentum of the jet discharged from the yarn traveling space 24a, and the oil mist can be effectively collected at low cost.

In this embodiment, the guide member is a duct member 32 having an inlet 32a for taking in the jet and an outlet 32b for discharging the jet toward the suction port 31a. With this configuration, the jet can be reliably guided to the suction port 31a by the duct member 32, so the oil mist can be collected more effectively. In addition, the air blown out from the outlet 32b of the duct member 32 can be used to assist suction at the suction port 31a of the housing 31.

In this embodiment, the flow path area of the part of the duct member 32 on the side of the exhaust port 32b, including the exhaust port 32b, gradually decreases toward the exhaust port 32b. With this configuration, the pressure of the air toward the exhaust port 32b is increased, so that the air can be discharged from the exhaust port 32b while maintaining to some extent the momentum at the time of ejection from the yarn traveling space 24a. Therefore, the suction assist effect by the air being blown out from the duct member 32 can be improved, and the oil mist can be collected more effectively.

In this embodiment, the duct member 32 has guide surfaces 35, 36 arranged in a direction intersecting the extension direction of the yarn traveling space 24a, and the ends of the guide surfaces 35, 36 on the inlet 32a side are located outside the yarn traveling space 24a in the extension direction. With this configuration, it becomes easier to take the jets ejected from both ends of the yarn traveling space 24a into the inside of the duct member 32.

In this embodiment, a portion of the guide surfaces 35, 36 on the inlet 32a side, including the end portion on the inlet 32a side, extends outside the yarn traveling space 24a in the extension direction toward the outlet 32b side. With this configuration, the jet from the yarn traveling space 24a is easily guided toward the outlet 32b side by the guide surfaces 35, 36, and disturbance of the flow due to collision with the guide surfaces 35, 36 can be suppressed.

In this embodiment, the guide surfaces 35, 36 are curved from the end on the inlet 32a side to the end on the outlet 32b side. If the guide surfaces 35, 36 have corners, the air flow is likely to be disturbed at those corners. In this regard, by making the guide surfaces 35, 36 curved, the air flow can be made smoother.

In this embodiment, the pair of guide surfaces 35, 36 are plane-symmetrical with respect to the center of the yarn running space 24a in the extension direction. With this configuration, the air flow inside the duct member 32 is also more likely to be symmetrical, making the flow less likely to be disturbed.

In this embodiment, a suction flow passage 49 that communicates with the suction port 31a is formed between the inner surface of the housing 31 and the outer surface of the duct member 32. With this configuration, the oil mist that is not taken in by the duct member 32 is also sucked through the suction flow passage 49 and from the suction port 31a, so the oil mist can be collected more effectively.

In this embodiment, the duct member 32 is movable between a distant position away from the intertwining device 20 and a proximate position closer to the intertwining device 20 than the distant position. The closer the duct member 32 is positioned to the intertwining device 20, the more oil mist can be collected. However, doing so causes the duct member 32 to get in the way when threading the intertwining device 20. Therefore, as described above, by configuring the duct member 32 to be movable, it is possible to achieve both the efficiency of collecting the oil mist and the ease of threading.

In this embodiment, the housing 31 is formed with openings 31b, 31c through which the yarn Y passes, and is provided with opening/closing members 33, 34 that can change the opening area of the openings 31b, 31c. The smaller the openings 31b, 31c formed in the housing 31, the more the amount of oil mist leaking out of the housing 31 can be reduced. However, this makes it difficult to pass the yarn Y through the openings 31b, 31c when threading the yarn into the interlacing device 20. Therefore, by providing the openings 31b, 31c with the openings 33, 34 as described above, it is possible to achieve both reduced leakage of the oil mist and improved workability in threading the yarn.

In this embodiment, the intertwining device 20 has an intertwining section 22 in which a yarn running space 24a is formed, a support member 21 that supports the intertwining section 22, and a jet guide member (yarn guide member 23) that is arranged outside the intertwining section 22 in the extension direction of the yarn running space 24a, and the yarn guide member 23 rises from the support member 21 toward the guide member (duct member 32). With this configuration, the jet from the yarn running space 24a can be guided to the guide member (duct member 32) by the jet guide member (yarn guide member 23), and the oil mist can be collected more effectively.

In this embodiment, the jet guide member (yarn guide member 23) rises from the support member 21 at an incline toward the outside of the yarn running space 24a in the extension direction. With this configuration, the jet from the yarn running space 24a is more easily guided by the jet guide member (yarn guide member 23) to the guide member (duct member 32), and disturbance of the flow caused by collision with the jet guide member (yarn guide member 23) can be suppressed.

In this embodiment, the jet guide member (yarn guide member 23) is formed with a guide groove 23a into which the yarn Y is inserted. With this configuration, the jet guide member can also be used as the yarn guide member, which helps prevent an increase in the number of parts.

Other Embodiments
A description will now be given of modifications of the above embodiment, in which various changes have been made.

The specific configuration of the housing 31 in the above embodiment can be modified as appropriate. For example, the suction port 31a may be formed at a location other than the upper end of the housing 31. Also, multiple suction ports 31a may be formed. Also, it is not essential to provide the opening/closing members 33, 34 at the openings 31b, 31c.

The specific configuration of the duct member 32 in the above embodiment can be changed as appropriate. For example, it is not essential that the guide surfaces 35, 36 of the duct member 32 are curved, and they may be flat or curved surfaces. In addition, the side surfaces 37, 38 of the duct member 32 may be curved surfaces. Furthermore, the duct member 32 may be a straight cylinder or a square tube, a truncated cone or a square truncated member with a hollow interior, or a pipe-like shape that is bent halfway. The direction in which the duct member 32 extends can also be changed as appropriate. In addition, the arrangement of the exhaust port 32b in the duct member 32 can be changed as appropriate, but it is preferable that the exhaust port 32b is arranged opposite the suction port 31a of the housing 31.

In the above embodiment, the duct member 32 is movable, but as long as the yarn threading operation to the interlacing device 20 is possible, the duct member 32 does not necessarily have to be movable. In addition, the duct member 32 may be divided into multiple pieces, or a part of the inlet 32a side or the outlet 32b side may branch into multiple paths.

In the above embodiment, the guide member of the present invention is the duct member 32, but the guide member may take other forms. For example, the guide member may be formed of one or more guide plates (such as guide surfaces 35, 36).

In the above embodiment, the yarn guide member 23 of the interlacing device 20 stands at an angle, but it may stand straight in the height direction from the support member 21. In addition, the yarn guide member 23 is not limited to a plate-shaped member, and may have various protruding shapes that stand up from the support member 21.

In the above embodiment, the spinning take-up device 1 is equipped with a drawing device 3. However, the present invention can also be applied to a spinning take-up device that does not have a drawing device 3.

In the above embodiment, the yarn processing device of the present invention is described as an intertwining device 20. However, the oil recovery device of the present invention may be applied to other yarn processing devices. Examples of other yarn processing devices include a migration nozzle that uniformly distributes the oil applied to the yarn. In addition, although the above embodiment describes an example in which fluid is sprayed from both ends of the yarn traveling space 24a, the yarn processing device of the present invention may be one in which fluid is sprayed from one end of the yarn traveling space 24a. In that case, the guide surface and jet guide member of the present invention may be provided only on the side from which fluid is sprayed from the yarn traveling space 24a.

1: Spinning take-up device 2: Oil guide (oil application device)
5: Intertwining mechanism (yarn processing mechanism)
20: Interlacing device (yarn processing device)
21: Support member 22: Intertwining portion (yarn processing portion)
23: Yarn guide member (jet guide member)
23a: Guide groove 24a: Yarn running space 30: Oil recovery device 31: Housing 31a: Suction port 31b, 31c: Openings 33, 34: Opening/closing members 32: Duct member (guide member)
32a: inlet 32b: outlet 35, 36: guide surface 49: suction flow path Y: thread

Claims (15)

An oil recovery device that recovers an oil mist scattered from a yarn treatment device that performs a predetermined treatment on a yarn by injecting a fluid into a yarn traveling space through which the yarn, to which an oil has been applied, is traveling, the device comprising:
a housing that houses the yarn processing device and has a suction port and an opening through which the yarn passes ;
a guide member disposed inside the housing away from the opening , and guiding a jet of the fluid from the yarn traveling space to the suction port;
An oil recovery device comprising: The oil recovery device according to claim 1, characterized in that the guide member is a duct member having an inlet for taking in the jet and an outlet for discharging the jet toward the suction port. The oil recovery device according to claim 2, characterized in that the flow path area of the part of the duct member on the discharge port side, including the discharge port, gradually decreases toward the discharge port side. The duct member has a guide surface arranged in a direction intersecting an extension direction of the yarn traveling space,
The oil recovery device according to claim 2 or 3, wherein an end portion of the guide surface on the side of the inlet is positioned outside the yarn traveling space in the extending direction. The oil recovery device according to claim 4, characterized in that a portion of the guide surface on the inlet side, including the end portion on the inlet side, extends outward from the yarn running space in the extension direction toward the outlet side. The oil recovery device according to claim 4 or 5, characterized in that the guide surface is curved from the end on the inlet side to the end on the outlet side. The oil recovery device according to any one of claims 4 to 6, characterized in that a pair of guide surfaces are provided on both sides of the yarn running space in the extension direction, and the pair of guide surfaces are plane symmetrical with respect to the center of the yarn running space in the extension direction. The oil recovery device according to any one of claims 2 to 7, characterized in that a suction passage communicating with the suction port is formed between the inner surface of the housing and the outer surface of the duct member. The oil recovery device according to any one of claims 2 to 8, characterized in that the duct member is movable between a distant position away from the yarn processing device and a close position closer to the yarn processing device than the distant position. The oil agent recovery device according to any one of claims 1 to 9, further comprising an opening/closing member capable of changing an opening area of the opening. a yarn processing device that performs a predetermined treatment on the yarn by spraying a fluid into a yarn traveling space through which the yarn, to which an oil has been applied, travels;
An oil agent recovery device according to any one of claims 1 to 10,
A yarn processing mechanism comprising: The yarn processing device includes:
a yarn processing section in which the yarn traveling space is formed;
A support member for supporting the yarn processing section;
a jet guide member arranged outside the yarn processing section in an extension direction of the yarn traveling space;
It has
12. The yarn processing mechanism according to claim 11, wherein the jet guide member rises from the support member towards the guide member. The yarn processing mechanism according to claim 12, characterized in that the jet guide member rises from the support member at an angle toward the outside of the yarn running space in the extension direction. The yarn processing mechanism according to claim 12 or 13, characterized in that the jet guide member is formed with a guide groove into which the yarn is inserted. An oil applying device for applying an oil to the yarn;
The yarn treating mechanism according to any one of claims 11 to 14, which is disposed downstream of the oil application device in the yarn running direction;
A spinning take-up device comprising:

Images