Spinning takeoff device

Abstract

To effectively suppress air resistance on a package when winding a yarn, and to improve a reduction effect of power consumption.SOLUTION: A spinning takeoff device 1 comprises: a spinning device 2 having a mouth piece 12 for spinning out a plurality of yarns Y downward; a yarn winding unit 4 having a bobbin holder 24 mounted with a plurality of bobbins B around which each of the plurality of yarns Y spun out from the mouth piece 12 is wound; a housing 30 that accommodates a plurality of packages P formed of the plurality of yarns Y spun out from the mouth piece 12, traveling towards the yarn winding unit 4, and each of the plurality of yarns Y being wound around the plurality of bobbins B; and a decompression mechanism 40 capable of decompressing an internal part of the housing 30. An openable / closable discharge opening 31 for discharging the plurality of packages P is provided in the housing 30. The plurality of package P can be discharged from the internal part of the housing 30 when the discharge opening 31 is open. When the discharge opening 31 is closed, an internal space 70 of the housing 30 becomes sealed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a spinning and drawing device having a yarn winding machine for winding the yarn spun from a spinning device.

Background Art

[0002] Patent Document 1 discloses a spinning and drawing device (the drawing device of Patent Document 1) having a yarn winding machine for winding the yarn spun from a spinning device. The yarn winding machine includes a bobbin holder extending in the horizontal direction, a plurality of bobbins mounted on the bobbin holder side by side in the axial direction of the bobbin holder, and a contact roller that applies pressure to a plurality of packages formed by winding the yarn around each bobbin. The yarn winding machine winds the yarn around the bobbins mounted on the bobbin holder to form packages by rotating the bobbin holder. In such a yarn winding machine, the packages rotating together with the bobbin holder are subject to air resistance, which increases the rotational load of the bobbin holder and, consequently, increases the power consumption of the yarn winding machine.

[0003] Therefore, in the yarn winding machine of Patent Document 1, a cover portion (the first cover portion of Patent Document 1) is provided along the circumferential direction of the package in order to suppress the air resistance applied to the package. By providing the cover portion, the air flowing along the outer peripheral surface of the package is guided to the inner surface of the cover portion, and the separation of air from the outer peripheral surface of the package is suppressed. Then, a decrease in the air density in the region along the outer peripheral surface of the package is suppressed, and the flow of air from the space around the package into the region along the outer peripheral surface of the package is suppressed. Thereby, the air resistance applied to the package can be suppressed, and the suppression of power consumption can be realized.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, in Patent Document 1, in order to ensure the quality of the package, it is necessary to reliably avoid contact between the outer peripheral surface of the package and the cover portion. In particular, considering that the diameter of the package expands as the winding of the thread progresses, and that the bobbin holder that rotates during thread winding sways, etc., a sufficient gap must be provided between the outer peripheral surface of the package and the cover portion to reliably avoid mutual contact. However, when the gap between the outer peripheral surface of the package and the cover portion is large, the effect of suppressing the air resistance applied to the package is limited.

[0006] In addition, in Patent Document 1, in order to appropriately wind the thread, it is necessary to avoid contact between the cover portion and the contact controller. For this reason, the cover portion cannot be provided in the vicinity of the location where the contact controller and the outer peripheral surface of the package come into contact. In other words, the cover portion partially covers the outer peripheral surface of the package and cannot cover it over the entire circumference. For this reason, with the configuration of Patent Document 1, there is a possibility that the air resistance applied to the package cannot be effectively suppressed.

[0007] An object of the present invention is to effectively suppress the air resistance applied to the package during thread winding and improve the effect of reducing power consumption.

Means for Solving the Problems

[0008] The spinning take-up device of the present invention includes a spinning device having a die for spinning a plurality of yarns downward, a winding machine having a bobbin holder on which a plurality of bobbins around which the plurality of yarns spun from the die are wound are mounted, the plurality of yarns spun from the die and traveling toward the winding machine, and a housing for accommodating the plurality of packages formed by winding each of the plurality of yarns around the plurality of bobbins, and a pressure reducing mechanism capable of reducing the pressure inside the housing. The housing is provided with an openable and closable discharge opening for discharging the plurality of packages. When the discharge opening is open, the plurality of packages can be discharged from the inside of the housing, and when the discharge opening is closed, the internal space of the housing is in a sealed state.

[0009] According to the present invention, when winding the yarn spun from the spinning device around the bobbin to form a package, by closing the discharge opening, the internal space of the housing can be made airtight. By driving the pressure reducing mechanism in this state, the inside of the housing can be depressurized. Then, the air around the package decreases, and the air resistance applied to the package can be effectively suppressed. Therefore, the load when rotating the bobbin holder is greatly reduced, and the effect of reducing the power consumption of the winding machine when winding the yarn can be improved.

[0010] In the spinning take-up device of the present invention, the housing is preferably provided with an openable and closable first opening for accessing the die from the outside of the housing. When the first opening is open, it is possible to access the die from the outside of the housing, and when the first opening is closed, the internal space of the housing is in a sealed state.

[0011] In the present invention, when performing maintenance of the die or the like, an operator can easily access the die through the first opening provided separately from the discharge opening.

[0012] In the spinning take-up device of the present invention, the decompression mechanism includes a pump disposed outside the housing and a connection passage connecting the housing and the pump, and the connection passage is preferably connected to the housing at a position closer to the winding machine than the die.

[0013] According to the present invention, the connection passage is connected to the housing at a position closer to the winding machine than the die. Therefore, most of the air sucked by the pump generally flows from the die toward the winding machine and into the connection passage. As a result, the direction in which most of the air sucked by the pump flows is substantially the same as the direction in which the air flows along the yarn traveling from the die toward the winding machine. Thereby, it is possible to suppress the collision between the air sucked by the pump and the air flowing along the traveling yarn, and the yarn vibration caused by the turbulence of the air flow accompanying the collision of the air is suppressed.

[0014] In the spinning take-up device of the present invention, a godet roller for sending the plurality of yarns spun from the die to the winding machine is disposed upstream of the winding machine in the yarn traveling direction, and the housing is provided with an openable and closable second opening. When the second opening is open, it is possible to access the godet roller from the outside of the housing, and when the second opening is closed, the internal space of the housing is preferably in a sealed state.

[0015] According to the present invention, an operator can easily access the godet roller through a second opening provided separately from the discharge opening, so that it is easy to thread the yarn around the godet roller.

[0016] In the spinning take-up device of the present invention, a heat generating member that generates heat when the winding machine is driven is disposed inside the housing, and it is preferable to provide a heat dissipation mechanism that dissipates the heat generated from the heat generating member to the outside of the housing.

[0017] When the pressure inside the housing is reduced during winding of the yarn onto the bobbin, the amount of air that mediates heat dissipation from the heat generating member decreases, resulting in a reduction in the heat dissipation efficiency of the heat generating member. Then, the temperature inside the housing rises, causing a failure of the yarn winding machine. In the present invention, since the heat generated from the heat generating member is dissipated to the outside of the housing by the heat dissipation mechanism, sufficient heat dissipation efficiency can be ensured even if the pressure inside the housing decreases.

[0018] In the yarn take-off device of the present invention, it is preferable that the heat dissipation mechanism includes a heat dissipation member that is open to the atmosphere outside the housing, a circulation flow path that contacts the heat dissipation member and the heat generating member and in which a fluid circulates inside, and a circulation pump that circulates the fluid in the circulation flow path.

[0019] According to the present invention, heat generated from the heat generating member undergoes heat exchange with the fluid flowing through the circulation flow path. The fluid that has become high temperature due to heat exchange with the heat generating member circulates to the heat dissipation member side and is dissipated by being open to the atmosphere through the heat dissipation member. Then, the dissipated fluid circulates back to the heat generating member side again to perform the above heat exchange. Thus, the heat generated from the heat generating member can be continuously dissipated to the outside of the housing.

[0020] In the yarn take-off device of the present invention, it is preferable that the heat dissipation mechanism is provided inside the housing and includes a cooling member that cools the fluid flowing through the circulation flow path.

[0021] According to the present invention, the fluid flowing through the circulation flow path is further cooled by the cooling member. Therefore, since the fluid sent to the heat generating member side becomes lower in temperature, heat exchange between the heat generating member and the fluid can be performed more efficiently.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0023] (Spinning and drawing device 1) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of a spinning and drawing device 1 according to the present embodiment. In this specification, the left - right direction of the paper surface of FIG. 1 is defined as the front - rear direction, and the direction from the front to the back of the paper surface is defined as the left - right direction (the front is the right side). Also, the direction orthogonal to both the front - rear direction and the left - right direction is defined as the up - down direction in which gravity acts.

[0024] As shown in FIG. 1, the spinning and drawing device 1 includes a spinning device 2, a yarn regulating guide 7, a spinning and stretching device 10, a first godet roller 8 and a second godet roller 9, a yarn winding machine 4, a housing 30, a decompression mechanism 40, and a heat dissipation mechanism 50 (see FIG. 3). The spinning device 2 has a die 12 in which a plurality of nozzles (not shown) for spinning a plurality of yarns Y downward are formed. The spinning device 2 is arranged on the upper floor within the facility where the spinning and drawing device 1 is installed, and the yarn regulating guide 7, the spinning and stretching device 10, the first godet roller 8, the second godet roller 9, the yarn winding machine 4, the decompression mechanism 40, and the heat dissipation mechanism 50 are arranged on the lower floor. The housing 30 is arranged straddling the upper floor and the lower floor. Note that in FIG. 1, the description of the heat dissipation mechanism 50 is omitted.

[0025] The first godet roller 8 and the second godet roller 9 are rollers for taking up a plurality of yarns Y spun from the die 12. As shown in FIG. 1, the first godet roller 8 is a roller whose axial direction is substantially parallel to the left-right direction, and is disposed above the front end portion of the winding machine 4. In other words, the first godet roller 8 is disposed upstream of the winding machine 4 in the yarn traveling direction in which the plurality of yarns Y travel. The first godet roller 8 is rotationally driven by a motor (not shown). The second godet roller 9 is a roller whose axial direction is substantially parallel to the left-right direction, and is disposed above and rearward of the first godet roller 8. The second godet roller 9 is rotationally driven by a motor (not shown). In the present embodiment, when the yarn Y is wound around the first godet roller 8 and the second godet roller 9, the second godet roller 9 moves to a position near the first godet roller 8.

[0026] The yarn regulating guide 7 is disposed above the first godet roller 8. The yarn regulating guide 7 is, for example, a known comb-shaped yarn guide, and is for regulating the interval between adjacent yarns Y to a predetermined value when the plurality of yarns Y are wound.

[0027] The spinning and drawing device 10 is a device for heating and drawing a plurality of yarns Y, and is disposed below the spinning device 2. The spinning and drawing device 10 has a plurality (for example, five) of godet rollers (not shown) accommodated inside a heat-insulating box 11.

[0028] (Winding machine 4) Subsequently, the winding machine 4 will be described with reference to FIGS. 1 and 2. FIG. 2 is a front view of the winding machine 4. The winding machine 4 includes a machine base 20, a plurality of fulcrum guides 21, a plurality of traverse guides 22, a turret 23, two bobbin holders 24, and a contact controller 25.

[0029] As shown in FIG. 1, the machine 20 includes a machine body portion 27 erected at the rear of the bobbin winder 4, and a frame body 28 fixed to the upper part of the machine body portion 27 and extending forward. The machine body portion 27 supports a turret 23 and the like. The frame body 28 supports a contact controller 25 extending along the front-rear direction.

[0030] The plurality of fulcrum guides 21 are provided individually for the plurality of yarns Y and arranged in the front-rear direction. The plurality of fulcrum guides 21 are attached to a guide support member 29 supported by the frame body 28. When the plurality of yarns Y are respectively hung thereon, they serve as fulcrums when the plurality of yarns Y are each twilled.

[0031] The plurality of traverse guides 22 are provided individually for the plurality of yarns Y and arranged in the front-rear direction. The plurality of traverse guides 22 are driven by a traverse motor 81 (see FIG. 3) and reciprocate in the front-rear direction. Thereby, the yarn Y hung on the traverse guide 22 is twilled with the fulcrum guide 21 as a fulcrum. For example, a plurality of traverse motors 81 are arranged corresponding to each of the plurality of traverse guides 22.

[0032] The turret 23 is a disk-shaped member whose axial direction is substantially parallel to the front-rear direction, and is rotatably supported by the machine body portion 27. The turret 23 is rotationally driven by a turret motor 82 (see FIG. 3). The turret 23 cantileveredly supports two bobbin holders 24 and moves the two bobbin holders 24 by rotating about a rotation axis substantially parallel to the front-rear direction. Thereby, in the bobbin winder 4, it is possible to exchange the bobbin holder 24 at the yarn winding position (the upper position in FIGS. 1 and 2) where the yarn Y is wound and the bobbin holder 24 at the standby position (the lower position in FIGS. 1 and 2) where the yarn Y is not wound. And it is possible to exchange the bobbin B for the bobbin holder 24 at the standby position while the yarn Y is being wound around the bobbin B attached to the bobbin holder 24 at the yarn winding position.

[0033] The two bobbin holders 24 are each for mounting a plurality of bobbins B. The two bobbin holders 24 are rotatably supported at the upper and lower ends of a turret 23 respectively supported by the machine base body 27, and extend forward from the turret 23. In other words, the two bobbin holders 24 are cantilevered by the machine base body 27 arranged on the rear side. The axial directions of the two bobbin holders 24 are substantially parallel to the front-rear direction. Note that the tip side (front side) of the bobbin holder 24 is generally the working side where operations such as mounting the bobbin B on the bobbin holder 24 are performed.

[0034] A plurality of bobbins B individually provided for a plurality of yarns Y are mounted side by side in the front-rear direction on each bobbin holder 24. The number of bobbins B mounted on one bobbin holder 24 is, for example, 16. Also, the two bobbin holders 24 are each rotationally driven by an individual take-up motor 83 (see FIG. 3).

[0035] The contact controller 25 is a roller whose axial direction is substantially parallel to the front-rear direction, and is arranged immediately above the upper bobbin holder 24. The contact controller 25 contacts the outer peripheral surfaces of a plurality of packages P formed by winding a plurality of yarns Y around a plurality of bobbins B mounted on the upper bobbin holder 24, thereby applying a contact pressure to the outer peripheral surfaces of the packages P during winding to shape the packages P.

[0036] In the yarn winding machine 4 having the above configuration, when the upper bobbin holder 24 is rotationally driven, the yarn Y oscillated in a twill pattern by the traverse guide 22 is wound around the bobbin B to form a package P.

[0037] (Housing 30) The housing 30 houses a plurality of yarns Y spun from the nozzle 12 and traveling toward the yarn winding machine 4, and a plurality of packages P formed by winding each of the plurality of yarns Y around a plurality of bobbins B. As shown in FIG. 1, in the present embodiment, the housing 30 houses the spinning device 2, the yarn regulating guide 7, the spinning and stretching device 10, the first godet roller 8 and the second godet roller 9, and the yarn winding machine 4.

[0038] As shown in FIG. 1, the housing 30 is provided with a discharge opening 31, a first opening 32, and a second opening 33. The discharge opening 31, the first opening 32, and the second opening 33 are all configured to be openable and closable. The opening and closing method of each opening is not particularly limited, and examples thereof include a sliding door and a hinged door. The discharge opening 31, the first opening 32, and the second opening 33 are provided on the front surface of the housing 30.

[0039] The discharge opening 31 is an opening for discharging a plurality of packages P to the outside of the housing 30. The discharge opening 31 is provided at the lower part of the front surface of the housing 30. More specifically, the discharge opening 31 is provided at a position on the front surface of the housing 30 that is substantially at the same height as the bobbin holder 24 in the standby position. Further, the discharge opening 31 has a size that can discharge the package P attached to the bobbin holder 24 in the standby position. When the discharge opening 31 is open, a plurality of packages P can be discharged from the inside of the housing 30, and when the discharge opening 31 is closed, the internal space 70 of the housing 30 is in a sealed state.

[0040] The first opening 32 is an opening for accessing the base 12 from the outside of the housing 30. The first opening 32 is provided at the upper part of the front surface of the housing 30. More specifically, the first opening 32 is provided at a position on the front surface of the housing 30 that is substantially at the same height as the base 12 or slightly below the base 12. Further, the first opening 32 has a size that allows the hand of an operator or the arm of a work robot to enter. When the first opening 32 is open, access to the base 12 from the outside of the housing 30 is possible, and when the first opening 32 is closed, the internal space 70 of the housing 30 is in a sealed state. Although not shown in this embodiment, generally, below the spinning device 2, a cooling device for cooling a plurality of yarns Y and an oil agent nozzle for applying an oil agent to the plurality of yarns Y are arranged. It is also possible to access such a cooling device and oil agent nozzle from the outside of the housing 30 through the open first opening 32.

[0041] The second opening 33 is an opening for accessing the first godet roller 8 and the second godet roller 9. The second opening 33 is provided above the discharge opening 31 on the front surface of the housing 30. More specifically, the second opening 33 is provided at a position on the front surface of the housing 30 that is approximately at the same height as the first godet roller 8. Further, the second opening 33 is sized such that an operator's hand, an arm of a work robot, etc. can enter. When the second opening 33 is open, it is possible to access the first godet roller 8 and the second godet roller 9 that has moved to the vicinity of the first godet roller 8 from the outside of the housing 30, and when the second opening 33 is closed, the internal space 70 of the housing 30 is in a sealed state. In this embodiment, it is also possible to access the spinning and drawing device 10 from the outside of the housing 30 through the open second opening 33.

[0042] As described above, in this embodiment, when all of the discharge opening 31, the first opening 32, and the second opening 33 are closed, the internal space 70 of the housing 30 is in a sealed state.

[0043] (Vacuum mechanism 40) The vacuum mechanism 40 can evacuate the inside of the housing 30. More specifically, the vacuum mechanism 40 can evacuate the inside of the housing 30 in which the internal space 70 is in a sealed state. As shown in FIG. 1, the vacuum mechanism 40 includes a pump 41 disposed outside the housing 30 and a connection passage 42 connecting the housing 30 and the pump 41. The pump 41 is driven by a pump motor (not shown). When the pump 41 is driven, the air inside the housing 30 is sucked into the pump 41 through the connection passage 42. As shown in FIG. 1, the connection passage 42 is connected to the housing 30 at a position closer to the winding machine 4 than the die 12.

[0044] (Heat dissipation mechanism 50) Next, while referring to FIG. 3, the heat dissipation mechanism 50 will be described. In FIG. 3, the description of the yarn Y is omitted for the sake of explanation. The heat dissipation mechanism 50 is for dissipating the heat generated from the heat generating member 80 disposed inside the housing 30 to the outside of the housing 30. The heat generating member is a member that generates heat when the yarn winding machine 4 is driven. The heat generating member 80 includes, for example, the traverse motor 81, the turret motor 82, the winding motor 83, etc. of the present embodiment. Further, the heat generating member may include a control device for controlling the driving of the above-described motor and the like.

[0045] As shown in FIG. 3, the heat dissipation mechanism 50 includes a heat dissipation member 51, a circulation flow path 52, a circulation pump 53, and cooling plates 54 and 55 (cooling members of the present invention). The heat dissipation member 51 is provided outside the housing 30 and is a member open to the atmosphere. The heat dissipation member 51 is, for example, a radiator. The circulation flow path 52 is in contact with the heat dissipation member 51 and the heat generating member 80, and a fluid circulates inside. The fluid circulating inside is, for example, water or oil. The circulation pump 53 is for circulating the fluid in the circulation flow path 52. When the circulation pump 53 is driven, the fluid in the circulation flow path 52 is sucked by the circulation pump, and the fluid flows in the direction of the solid line arrow in FIG. 3.

[0046] The fluid flowing in the circulation flow path 52 is dissipated by being opened to the atmosphere through the heat dissipation member 51 in the region where the circulation flow path 52 is in contact with the heat dissipation member 51. As a result, in the direction of the fluid flow, the fluid flowing in the region downstream of the heat dissipation member 51 in the circulation flow path 52 becomes low temperature. The low-temperature fluid further flows through the circulation flow path 52 and reaches the region in contact with each heat generating member 80. Then, heat exchange occurs between the fluid flowing through the circulation flow path 52 and the heat generated from the heat generating member 80. The fluid that has become high temperature due to heat exchange with the heat generating member 80 circulates back to the heat dissipation member 51 side and is dissipated by being opened to the atmosphere through the heat dissipation member 51. Thus, the heat dissipation mechanism 50 dissipates the heat generated from the heat generating member 80 to the outside of the housing 30.

[0047] Here, when the distance between the heat dissipation member 51 and the heat generating member 80 is large, the temperature of the fluid may rise before the low-temperature fluid reaches the region in the circulation channel 52 that contacts the heat generating member 80. Then, the efficiency of heat exchange between the fluid and the heat generated from the heat generating member 80 will decrease. For example, in the present embodiment, as shown in FIG. 3, there is a separation between the plurality of traverse motors 81 and the heat dissipation member 51. For this reason, the heat exchange efficiency between the fluid flowing through the circulation channel 52 and the heat generated from each traverse motor 81 is lower than the heat exchange efficiency between the fluid and the heat generated from other heat generating members 80 (such as the turret motor 82 and the winding motor 83).

[0048] Therefore, in the present embodiment, the heat dissipation mechanism 50 includes cooling plates 54 and 55 for cooling the fluid flowing through the circulation channel 52. The cooling plates 54 and 55 are provided inside the housing 30 and are in contact with the circulation channel 52. More specifically, in the direction in which the fluid flows, the cooling plate 54 is in contact with the circulation channel 52 in a region upstream of the region in the circulation channel 52 that contacts the plurality of traverse motors 81. Also, in the direction in which the fluid flows, the cooling plate 55 is in contact with the circulation channel 52 in a region downstream of the region in the circulation channel 52 that contacts the plurality of traverse motors 81. Thereby, regarding the heat generated from each traverse motor 81, heat exchange can be performed with the fluid whose low temperature is maintained by being cooled by the cooling plates 54 and 55. In the present embodiment, the cooling plate 54 is supported by, for example, the machine base main body portion 27. The cooling plate 55 is supported by, for example, the frame body 28.

[0049] (Output when rotationally driving the bobbin holder) Subsequently, with reference to FIGS. 4 and 5, the relationship between the output [kW] required to rotationally drive the bobbin holder 24 when winding a plurality of yarns Y around each bobbin B and the pressure inside the housing 30 will be described below.

[0050] FIG. 4 is a graph showing the output [kW] required to rotationally drive the bobbin holder 24 when the pressure inside the housing 30 is varied by the pressure reducing mechanism 40. Here, the output [kW] required to rotationally drive the bobbin holder 24 increases as the diameter of the package P increases. For this reason, in FIG. 4, the output [kW] required to rotationally drive the bobbin holder 24 is calculated for each diameter of the varying package P. Note that the values of the output [kW] shown in FIG. 4 are simulation values. FIG. 5 is a table showing various conditions during the winding of the yarn Y. The simulation values shown in FIG. 4 are calculated under the conditions shown in FIG. 5.

[0051] As shown in FIG. 5, the number of ends of the winding machine 4 (the number of bobbins B attached to one bobbin holder 24) is 12. The winding width of the yarn Y onto the bobbin B is 122 mm, and the winding density is 0.95 g / cm 3 3. The tension of the yarn Y wound around the bobbin B is 50 g. The diameter of the fully wound package P is 440 mm. The length of the bobbin holder 24 in the front-rear direction (axial direction) is 1.8 m. Although not shown in FIG. 5, the diameter of the package P at the start of winding of the yarn Y is 120 mm. The peripheral speed of the package P during the winding of the yarn Y is generally constant from the start to the end of winding of the yarn Y onto the bobbin B.

[0052] The vertical axis of FIG. 4 indicates the output value [kW]. The horizontal axis of FIG. 4 indicates five patterns of pressures inside the housing 30. The five patterns of pressures are 0.01 atm (a in FIG. 4), 0.5 atm (b in FIG. 4), 0.7 atm (c in FIG. 4), 0.9 atm (d in FIG. 4), and 1.0 atm (e in FIG. 4). Also, the horizontal axis of FIG. 4 shows the diameter of the varying package P divided into ten steps. The sizes of the diameters of the package P shown in FIG. 4 are 124 mm, 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 380 mm, 400 mm, 430 mm, and 440 mm. And on the horizontal axis of FIG. 4, for each of the ten steps of the diameter [mm] of the package P, the five patterns of pressures inside the housing 30 are shown. Summing up the above, in FIG. 4, for the case where the inside of the housing 30 is at the above five patterns of pressures, the values of the output [kW] required to rotate the bobbin holder 24 are shown by bars for each of the varying diameters (ten steps) of the package P.

[0053] The cross - hatched portion of the bar in FIG. 4 indicates the output required due to the tension loss of the yarn Y among the output required to rotate the bobbin holder 24. The tension loss of the yarn Y is the load applied to the bobbin holder 24 resulting from the tensions of the respective yarns Y wound around the plurality of bobbins B. The white portion of the bar in FIG. 4 indicates the output required due to the shaft loss among the output required to rotate the bobbin holder 24. The shaft loss is the load applied to the bobbin holder 24 as it rotates. The hatched portion of the bar in FIG. 4 indicates the output required due to the air resistance loss among the output required to rotate the bobbin holder 24. The air resistance loss is the load applied to the bobbin holder 24 resulting from the air resistance on the package P.

[0054] As shown in FIG. 4, among the output required to rotate the bobbin holder 24, the output required due to the tension loss of the yarn Y (cross - hatched portion) is approximately the same value even when the size of the diameter of the package P varies and even when the pressure inside the housing 30 varies. That is, it is considered that the output required due to the tension loss of the yarn Y is hardly affected by the diameter of the package P and the pressure inside the housing 30.

[0055] As shown in FIG. 4, among the output required to rotate the bobbin holder 24, the output required due to shaft loss (the white portion) is substantially the same value even when the pressure inside the housing 30 fluctuates. That is, it is considered that the output required due to the tension loss of the yarn Y is hardly affected by the pressure inside the housing 30. On the other hand, the output required due to shaft loss (the white portion) decreases as the diameter of the package P increases. This is considered to be due to the following reason. That is, when trying to keep the peripheral speed of the package P constant from the start to the end of winding the yarn Y around the bobbin B, the larger the diameter of the package P, the slower the rotation speed of the bobbin holder 24 needs to be. Shaft loss increases as the rotation speed of the bobbin holder 24 increases. Therefore, as the diameter of the package P increases and the rotation speed of the bobbin holder 24 decreases, the shaft loss becomes smaller and the output required due to shaft loss also decreases. However, as shown in FIG. 4, the proportion of the output required due to shaft loss in the total output required to rotate the bobbin holder 24 is very small. Therefore, it can be said that the fluctuation of the output required due to shaft loss has very little influence on the output required to rotate the bobbin holder 24.

[0056] As shown in FIG. 4, among the output required to rotate the bobbin holder 24, the output required due to windage loss (the hatched portion) decreases as the pressure inside the housing 30 is lower. In addition, as shown in FIG. 4, the proportion of the output required due to windage loss in the total output required to rotate the bobbin holder 24 is large (for example, refer to the bar at pressure e in FIG. 4). Therefore, by reducing the pressure inside the housing 30 by the decompression mechanism 40, the output required due to windage loss is suppressed, and furthermore, it can be said that it also leads to the suppression of the total output required to rotate the bobbin holder 24.

[0057] Also, as shown in FIG. 4, the output required due to windage loss (hatched portion) increases as the diameter of the package P increases. However, as the pressure inside the housing 30 decreases, the degree to which the output required due to windage loss decreases increases as the diameter of the package P increases. That is, it can be said that as the diameter of the package P increases, the effect of suppressing the output due to the decompression inside the housing 30 can be obtained more significantly.

[0058] As described above, by decompressing the inside of the housing 30 by the decompression mechanism 40, the output required to rotationally drive the bobbin holder 24 is effectively suppressed.

[0059] Here, generally, the power consumption of a winding machine (for example, a winding machine without a decompression mechanism 40) includes, in addition to (1) the output required to rotationally drive the bobbin holder 24 (hereinafter also simply referred to as the output of (1)), (2) the output required to reciprocate a plurality of traverse guides 22 (hereinafter also simply referred to as the output of (2)), and (3) the output required when the control device controls the driving of each motor and the like (hereinafter also simply referred to as the output of (3)). On the other hand, the power consumption of the winding machine 4 of the present embodiment includes, in addition to the outputs of (1) to (3) above, (4) the output required to drive the decompression mechanism 40 (hereinafter also simply referred to as the output of (4)), and (5) the output required to drive the heat dissipation mechanism 50 (hereinafter also simply referred to as the output of (5)). However, the outputs of (2) to (5) are very small values compared to the output of (1), and suppressing the output of (1) leads to suppressing the power consumption of the entire winding machine. Hereinafter, with reference to FIG. 6, it will be described below that the winding machine 4 of the present embodiment can reduce the power consumption of the entire winding machine compared to a conventional winding machine.

[0060] (Power Consumption of Winding Machine) FIG. 6 shows the integrated power [kW·h], which is the integrated value of the output of (1) above, of the power consumption of the yarn winder 4 from the start to the end of winding the yarn Y onto the bobbin B when the internal air pressure of the housing 30 is changed. In FIG. 6, the internal air pressure of the housing 30 is set to 1.0 atm, 0.5 atm, 0.3 atm, 0.1 atm, 0.05 atm, 0.01 atm, and 0.005 atm. The case of 1.0 atm is when the inside of the housing 30 is not depressurized, that is, it virtually reproduces a conventional yarn winder without the decompression mechanism 40. Also, in FIG. 6, the suppression power [kW·h] with respect to the integrated power at 1.0 atm is also shown.

[0061] As shown in FIG. 6, compared with the case where the internal air pressure of the housing 30 is 1.0 atm, the integrated power was suppressed in any case where the internal air pressure of the housing 30 was depressurized. In particular, the integrated power could be effectively suppressed when the internal air pressure of the housing 30 was in the range of 0.05 atm to 0.3 atm, and the integrated power could be further effectively suppressed when the internal air pressure of the housing 30 was 0.1 atm.

[0062] From the above, it was found that in the yarn winder 4 of the present embodiment provided with the decompression mechanism 40, the output of (1) could be effectively suppressed compared with a conventional yarn winder without the decompression mechanism 40. In addition, it was shown that the decompression mechanism 40 preferably depressurizes the inside of the housing 30 to 0.05 atm to 0.3 atm, and more preferably to 0.1 atm. Further, it should be noted that when the inside of the housing 30 is depressurized, it is known that the outputs of (2) and (3) above slightly decrease (data not shown). And, as described above, the outputs of (2) to (5) above are very small values compared with the output of (1). Based on the above, it is presumed that not only the output of (1) but also the power consumption of the entire yarn winder can be reduced by depressurizing the inside of the housing 30.

[0063] (Effect) The spinning take-up device 1 of this embodiment includes a spinning device 2 having a die 12 that spins a plurality of yarns Y downward, a winding machine 4 having a bobbin holder 24 to which a plurality of bobbins B around which the respective plurality of yarns Y spun from the die 12 are wound are attached, a plurality of yarns Y that are spun from the die 12 and travel toward the winding machine 4, and a housing 30 that houses a plurality of packages P formed by winding the respective plurality of yarns Y around the plurality of bobbins B, and a pressure reducing mechanism 40 capable of reducing the pressure inside the housing 30. The housing 30 is provided with an openable and closable discharge opening 31 for discharging the plurality of packages P. When the discharge opening 31 is open, the plurality of packages P can be discharged from the inside of the housing 30, and when the discharge opening 31 is closed, the internal space 70 of the housing 30 is in a sealed state.

[0064] According to this embodiment, when winding the yarn Y spun from the spinning device 2 around the bobbin B to form the package P, by closing the discharge opening 31, the internal space 70 of the housing 30 can be made into a sealed state. By driving the pressure reducing mechanism 40 in this state, the inside of the housing 30 can be depressurized. Then, the air around the package P decreases, and the air resistance applied to the package P can be effectively suppressed. Therefore, the load when rotating the bobbin holder 24 is greatly reduced, and the effect of reducing the power consumption of the winding machine 4 when winding the yarn Y can be improved.

[0065] Also, in the spinning take-up device 1 of this embodiment, the housing 30 is provided with an openable and closable first opening 32 for accessing the die 12 from the outside of the housing 30. When the first opening 32 is open, access to the die 12 from the outside of the housing 30 is possible, and when the first opening 32 is closed, the internal space 70 of the housing 30 is in a sealed state. In this embodiment, when performing maintenance on the die 12 or the like, an operator can easily access the die 12 through the first opening 32 provided separately from the discharge opening 31.

[0066] Further, in the spinning take-up device 1 of the present embodiment, the decompression mechanism 40 includes a pump 41 disposed outside the housing 30 and a connection passage 42 connecting the housing 30 and the pump 41. The connection passage 42 is connected to the housing 30 at a position closer to the winding machine 4 than the die 12. According to the present embodiment, most of the air sucked by the pump 41 generally flows from the die 12 toward the winding machine 4 and into the connection passage 42. As a result, the direction in which most of the air sucked by the pump 41 flows is substantially the same as the direction in which the air flowing along the yarn Y traveling from the die 12 toward the winding machine 4 flows. Thereby, it is possible to suppress the collision between the air sucked by the pump 41 and the air flowing along the traveling yarn Y, and the yarn vibration caused by the disturbance of the air flow accompanying the collision of the air is suppressed.

[0067] Furthermore, in the spinning take-up device 1 of the present embodiment, a first godet roller 8 and a second godet roller 9 for sending a plurality of yarns Y spun from the die 12 to the winding machine 4 are disposed upstream of the winding machine 4 in the yarn traveling direction. The housing 30 is provided with a second opening 33 that can be opened and closed. When the second opening 33 is open, it is possible to access the first godet roller 8 and the second godet roller 9 from the outside of the housing 30, and when the second opening 33 is closed, the internal space 70 of the housing 30 is in a sealed state. According to the present embodiment, the operator can easily access the first godet roller 8 and the second godet roller 9 through the second opening 33 provided separately from the discharge opening 31, so that it is easy to thread the yarns around each godet roller.

[0068] Further, in the spinning take-up device 1 of the present embodiment, a heat generating member 80 that generates heat when the bobbin winder 4 is driven is disposed inside the housing 30, and a heat dissipation mechanism 50 that dissipates the heat generated from the heat generating member 80 to the outside of the housing 30 is included. When the pressure inside the housing 30 is reduced during winding of the yarn Y onto the bobbin B, the amount of air that mediates the heat dissipation of the heat generating member 80 decreases, so the heat dissipation efficiency of the heat generating member 80 decreases. Then, the temperature inside the housing 30 rises and causes a failure of the bobbin winder 4. In the present embodiment, since the heat generated from the heat generating member 80 is dissipated to the outside of the housing 30 by the heat dissipation mechanism 50, sufficient heat dissipation efficiency can be ensured even if the pressure inside the housing 30 decreases.

[0069] Further, in the spinning take-up device 1 of the present embodiment, the heat dissipation mechanism 50 includes a heat dissipation member 51 that is open to the atmosphere outside the housing 30, a circulation flow path 52 that contacts the heat dissipation member 51 and the heat generating member 80 and in which a fluid circulates inside, and a circulation pump 53 that circulates the fluid in the circulation flow path 52. According to the present embodiment, heat exchange is performed between the heat generated from the heat generating member 80 and the fluid flowing through the circulation flow path 52. The fluid that has become high temperature due to heat exchange with the heat generating member 80 circulates to the heat dissipation member 51 side and is dissipated by being open to the atmosphere through the heat dissipation member 51. Then, the dissipated fluid circulates to the heat generating member 80 side again and the above heat exchange is performed. As described above, the heat generated from the heat generating member 80 can be continuously dissipated to the outside of the housing 30.

[0070] Further, in the spinning take-up device 1 of the present embodiment, the heat dissipation mechanism 50 is provided inside the housing 30 and has cooling plates 54 and 55 that cool the fluid flowing through the circulation flow path 52. According to the present embodiment, the fluid flowing through the circulation flow path 52 is further cooled by the cooling plates 54 and 55. For this reason, since the fluid sent to the heat generating member 80 side becomes lower in temperature, heat exchange between the heat generating member 80 and the fluid can be performed more efficiently.

[0071] (Modification example) Hereinafter, a modification example in which the above embodiment is modified will be described. Hereinafter, those having the same configuration as the above embodiment will be given the same reference numerals and their description will be omitted as appropriate.

[0072] In the above embodiment, the housing 30 houses the spinning device 2, the yarn regulating guide 7, the spinning and drawing device 10, the first godet roller 8 and the second godet roller 9, and the winding machine 4. However, the housing 30 only needs to house a plurality of yarns Y that are spun from the nozzle 12 and travel toward the winding machine 4, and a plurality of packages P formed by winding each of the plurality of yarns Y around a plurality of bobbins B, and is not limited to the embodiment described above. For example, the housing 30 may house a part of the spinning device 2 including the entire nozzle 12, the yarn regulating guide 7, the spinning and drawing device 10, the first godet roller 8 and the second godet roller 9, and a part of the winding machine 4 including all of the plurality of packages P.

[0073] In the above embodiment, the housing 30 is provided with a discharge opening 31, a first opening 32, and a second opening 33. However, the first opening 32 and the second opening 33 may not be provided. When the first opening 32 is not provided, for example, a robot arm for maintaining the nozzle 12 may be arranged inside the housing 30. When the second opening 33 is not provided, for example, access to each godet roller may be performed through the discharge opening 31. Further, the discharge opening 31 and the second opening 33 may be an integrated large opening.

[0074] In the above embodiment, the connection passage 42 is connected to the housing 30 at a position closer to the winding machine 4 than the nozzle 12. However, the connection passage 42 may be connected to any position of the housing 30.

[0075] In the above embodiment, the decompression mechanism 40 includes a pump 41 and a connection passage 42. However, the decompression mechanism 40 is not limited to such a configuration as long as it can decompress the inside of the housing 30.

[0076] In the above embodiment, the heat dissipation mechanism 50 has two cooling plates 54 and 55. However, only one cooling plate may be arranged, or no cooling plate may be arranged. Further, the heat dissipation mechanism 50 in the above embodiment has a heat dissipation member 51, a circulation flow path 52, and a circulation pump 53, but is not limited to such a mode. Furthermore, the heat dissipation mechanism 50 may not be arranged.

Explanation of Signs

[0077] 1 Spinning take-up device 2 Spinning device 4 Bobbin winder 8 First godet roller 9 Second godet roller 12 Nozzle 24 Bobbin holder 30 Housing 31 Discharge opening 32 First opening 33 Second opening 40 Vacuum mechanism 41 Pump 42 Connection passage 50 Heat dissipation mechanism 51 Heat dissipation member 52 Circulation flow path 53 Circulation pump 54 Cooling plate (cooling member) 55 Cooling plate (cooling member) 70 Internal space 80 Heat generating member B Bobbin P Package Y Thread

Claims

1. A spinning device having a nozzle for spinning a plurality of yarns downward; a yarn winding machine having a bobbin holder on which a plurality of bobbins are attached, onto which the plurality of yarns spun from the nozzle are wound respectively; a housing that accommodates the plurality of yarns spun from the spinneret and traveling toward the yarn winding machine, and a plurality of packages formed by winding the plurality of yarns around the plurality of bobbins, respectively; a pressure reducing mechanism capable of reducing the pressure inside the housing; Equipped with the housing is provided with an openable / closable discharge opening for discharging the plurality of packages; A spinning take-up device characterized in that the multiple packages can be discharged from inside the housing when the discharge opening is open, and the internal space of the housing is sealed when the discharge opening is closed.

2. the housing has a first opening that can be opened and closed to access the base from outside the housing, The spinning take-up device according to claim 1, characterized in that when the first opening is open, the spinneret is accessible from outside the housing, and when the first opening is closed, the internal space of the housing is sealed.

3. the pressure reducing mechanism includes a pump disposed outside the housing and a connection passage connecting the housing and the pump; 3. The yarn take-up device according to claim 1, wherein the connection passage is connected to the housing at a position closer to the yarn winding machine than the nozzle.

4. a godet roller for sending the plurality of yarns spun from the spinneret to the yarn winding machine is disposed upstream of the yarn winding machine in a yarn running direction; The housing is provided with a second opening that can be opened and closed, The spinning take-up device according to any one of claims 1 to 3, characterized in that when the second opening is open, the godet roller is accessible from outside the housing, and when the second opening is closed, the internal space of the housing is sealed.

5. a heat generating member that generates heat when the yarn winding machine is driven is disposed inside the housing, The spinning take-off device according to any one of claims 1 to 4, further comprising a heat dissipation mechanism for dissipating heat generated from the heat generating member to the outside of the housing.

6. The heat dissipation mechanism includes: a heat dissipation member that is open to the atmosphere outside the housing; a circulation flow path in contact with the heat dissipation member and the heat generating member, through which a fluid circulates; a circulation pump that circulates the fluid within a circulation flow path; The spinning take-off device according to claim 5, further comprising:

7. The spinning take-off apparatus according to claim 6, wherein the heat dissipation mechanism includes a cooling member provided inside the housing and configured to cool the fluid flowing through the circulation flow path.

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