Spinning traction device

Abstract

The invention provides a silk thread drawing device which can effectively suppress air resistance applied to a package and improve the reduction effect of power consumption when a silk thread is wound. The spinning drawing device (1) comprises a spinning device (2) which is provided with a spinning nozzle (12) for spinning a plurality of yarns (Y) downwards; a yarn winding machine (4) having a bobbin holder (24) to which a plurality of bobbins (B) for winding a plurality of yarns (Y) spun from the spinneret (12) are attached; a housing (30) for accommodating a plurality of threads (Y) spun from the spinneret (12) and traveling toward the thread winding machine (4), and a plurality of packages (P) formed by winding the plurality of threads (Y) on each of the plurality of bobbins (B); and a decompression mechanism (40) capable of decompressing the inside of the housing (30). The housing (30) is provided with an openable and closable discharge opening (31) for discharging a plurality of packages (P). When the discharge opening (31) is opened, 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.

Description

Technical Field

[0001] The present invention relates to a spinning drawing device having a thread winding machine for winding up a thread spun from a spinning device. Background Art

[0002] Patent document 1 discloses a spinning traction device (traction device of patent document 1) having a thread winding machine for winding up a thread spun from a spinning device. The thread winding machine has a bobbin holder extending in a horizontal direction, a plurality of bobbins mounted on the bobbin holder in an axial direction of the bobbin holder, and a contact roller for applying contact pressure to a plurality of packages formed by winding the thread on each bobbin. The thread winding machine forms a package by rotating the bobbin holder and winding the thread on the bobbin mounted on the bobbin holder. In such a thread winding machine, the package rotating together with the bobbin holder is subject to air resistance, thereby increasing the rotation load of the bobbin holder, and further increasing the power consumption of the thread winding machine.

[0003] Therefore, in the wire winding machine of Patent Document 1, a cover portion (the first cover portion of Patent Document 1) is provided along the circumference 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 air is suppressed from peeling off from the outer peripheral surface of the package. Thus, the decrease in the density of the air in the area along the outer peripheral surface of the package can be suppressed, and the air is suppressed from flowing from the space around the package into the area along the outer peripheral surface of the package. In this way, the air resistance applied to the package can be suppressed, and the power consumption can be suppressed.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2021-123458 Summary of the invention

[0007] Problems to be solved by the invention

[0008] Here, in Patent Document 1, in order to ensure the quality of the package, it is necessary to reliably avoid the contact between the outer peripheral surface of the package and the cover. In particular, if the diameter of the package increases as the yarn is wound, and the bobbin holder that rotates during the yarn winding shakes, etc., it is required to provide a gap between the outer peripheral surface of the package and the cover that is sufficient to reliably avoid contact with each other. However, if the gap between the outer peripheral surface of the package and the cover is large, the effect of suppressing the air resistance applied to the package is limited.

[0009] Furthermore, in Patent Document 1, in order to properly wind the yarn, it is necessary to avoid contact between the cover and the contact roller. Therefore, it is not possible to provide the cover near the portion where the contact roller contacts the outer peripheral surface of the package. In other words, the cover partially covers the outer peripheral surface of the package and cannot cover the entire circumference. Therefore, in the configuration of Patent Document 1, it may not be possible to effectively suppress the air resistance applied to the package.

[0010] An object of the present invention is to effectively suppress air resistance applied to a package when winding a yarn and to enhance the effect of reducing power consumption.

[0011] Means for solving problems

[0012] The spinning and drawing device of the present invention is characterized in that it comprises: a spinning device, which has a spinneret that spins a plurality of silk threads downward; a silk thread winding machine, which has a bobbin holder for mounting a plurality of bobbins that respectively wind up the plurality of silk threads spun from the above-mentioned spinneret; a shell, which accommodates the plurality of silk threads spun from the above-mentioned spinneret and advancing toward the above-mentioned silk thread winding machine, and a plurality of packages formed by respectively winding the plurality of silk threads on the above-mentioned plurality of bobbins; and a decompression mechanism, which can decompress the interior of the above-mentioned shell, and the above-mentioned shell is provided with a discharge opening portion that can be opened and closed for discharging the plurality of packages. When the above-mentioned discharge opening portion is opened, the plurality of packages can be discharged from the interior of the above-mentioned shell, and when the above-mentioned discharge opening portion is closed, the internal space of the above-mentioned shell becomes a sealed state.

[0013] According to the present invention, when the yarn spun from the spinning device is wound onto the bobbin to form a package, the internal space of the housing can be made into a sealed state by closing the discharge opening. By driving the decompression mechanism in this state, the interior of the housing can be decompressed. As a result, the air around the package is reduced, and the air resistance applied to the package can be effectively suppressed. Therefore, the load when the bobbin holder rotates is greatly reduced, and the effect of reducing the power consumption of the yarn winding machine when winding the yarn can be improved.

[0014] In the spinning and drawing device of the present invention, it is preferred that a first opening portion that can be opened and closed is provided in the shell for approaching the spinneret from the outside of the shell, and when the first opening portion is opened, the spinneret can be approached from the outside of the shell, and when the first opening portion is closed, the internal space of the shell becomes a sealed state.

[0015] In the present invention, when performing maintenance of the spinneret, the operator can easily access the spinneret through the first opening provided separately from the discharge opening.

[0016] In the spinning and drawing device of the present invention, preferably, the above-mentioned pressure reducing mechanism has a pump arranged outside the above-mentioned shell, and a connecting passage connecting the above-mentioned shell and the above-mentioned pump, and the above-mentioned connecting passage is connected to the above-mentioned shell at a position closer to the above-mentioned yarn winding machine than the above-mentioned spinneret.

[0017] According to the present invention, the connecting passage is connected to the housing at a position closer to the yarn winder than the spinneret. Therefore, most of the air sucked by the pump flows into the connecting passage roughly from the spinneret toward the yarn winder. As a result, the direction in which most of the air sucked by the pump flows is roughly the same as the direction in which the air flows along the yarn flowing from the spinneret toward the yarn winder. Thus, it is possible to suppress the collision between the air sucked by the pump and the air flowing along the traveling yarn, and to suppress the yarn swinging caused by the airflow turbulence caused by the collision between the accompanying air.

[0018] In the spinning and drawing device of the present invention, preferably, a guide roller is arranged on the upstream side of the above-mentioned yarn winder in the direction of yarn travel, and the guide roller is used to transport the multiple yarns spun from the above-mentioned spinneret to the above-mentioned yarn winder, and a second opening portion that can be opened and closed is provided in the above-mentioned shell, and when the above-mentioned second opening portion is opened, the above-mentioned guide roller can be approached from the outside of the above-mentioned shell, and when the above-mentioned second opening portion is closed, the internal space of the above-mentioned shell becomes a closed state.

[0019] According to the present invention, since the operator can easily access the godet roller via the second opening provided separately from the discharge opening, it is easy to hang the yarn on the godet roller.

[0020] In the spinning draw-off device of the present invention, preferably, a heat generating component that generates heat when the yarn winder is driven is arranged inside the housing, and the spinning draw-off device includes a heat dissipation mechanism that dissipates heat generated by the heat generating component to the outside of the housing.

[0021] If the pressure in the housing is reduced when the yarn is wound onto the bobbin, the amount of air that is the medium for heat dissipation of the heat generating component decreases, and thus the heat dissipation efficiency of the heat generating component decreases. As a result, the temperature inside the housing increases, which causes a malfunction of the yarn winding machine. In the present invention, the heat generated by the heat generating component is dissipated to the outside of the housing by the heat dissipation mechanism, so even if the pressure in the housing is reduced, the heat dissipation efficiency can be fully ensured.

[0022] In the spinning and pulling device of the present invention, preferably, the heat dissipation mechanism comprises: a heat dissipation component open to the atmosphere outside the shell; a circulation flow path in contact with the heat dissipation component and the heat generation component, and a fluid circulates inside; and a circulation pump to circulate the fluid in the circulation flow path.

[0023] According to the present invention, heat generated from the heat generating component is heat exchanged with the fluid flowing in the circulation flow path. The fluid that has become high temperature through heat exchange with the heat generating component is circulated to the heat dissipation component side, and is dissipated by opening to the atmosphere through the heat dissipation component. Then, the fluid after heat dissipation is circulated to the heat generating component side again to perform the above-mentioned heat exchange. Through the above, the heat generated from the heat generating component can be continuously dissipated to the outside of the housing.

[0024] In the spinning and pulling device of the present invention, it is preferable that the heat dissipation mechanism includes a cooling member that is provided inside the housing and cools the fluid flowing in the circulation flow path.

[0025] According to the present invention, the fluid flowing in the circulation flow path is further cooled by the cooling member. Therefore, the fluid sent to the heat generating member becomes lower temperature, so that heat exchange between the heat generating member and the fluid can be performed more effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic side view of the spinning draw-off device according to the present embodiment.

[0027] Figure 2 This is the front view of the wire winding machine.

[0028] Figure 3 This is a schematic side view of the yarn winder and the heat dissipation mechanism.

[0029] Figure 4 This is a graph showing the output required to rotationally drive the bobbin holder when the pressure inside the housing is changed.

[0030] Figure 5 This is a table showing various conditions when winding the yarn.

[0031] Figure 6 This is a table showing the power consumption of the yarn winder at each air pressure inside the housing.

[0032] Description of reference numerals:

[0033] 1: spinning traction device; 2: spinning device; 4: yarn winder; 8: first yarn guide roller; 9: second yarn guide roller; 12: spinneret; 24: bobbin holder; 30: shell; 31: discharge opening; 32: first opening; 33: second opening; 40: pressure reducing mechanism; 41: pump; 42: connecting passage; 50: heat dissipation mechanism; 51: heat dissipation component; 52: circulation flow path; 53: circulation pump; 54: cooling plate (cooling component); 55: cooling plate (cooling component); 70: internal space; 80: heating component; B: bobbin; P: package; Y: yarn. DETAILED DESCRIPTION

[0034] (Spinning traction device 1)

[0035] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. Figure 1 1 is a schematic side view of the spinning and drawing device 1 of this embodiment. Figure 1 The left and right directions of the paper are defined as the front-back directions, and the direction from the front side of the paper toward the back side is defined as the left-right directions (the front side is the right side). In addition, the direction perpendicular to the front-back directions and the left-right directions is defined as the up-down direction of the gravity.

[0036] like Figure 1 As shown, the spinning and drawing device 1 includes a spinning device 2, a yarn limiting yarn guide 7, a spinning and drawing device 10, a first yarn guide roller 8 and a second yarn guide roller 9, a yarn winding machine 4, a housing 30, a pressure reducing mechanism 40 and a heat dissipation mechanism 50 (see Figure 3 The spinning device 2 has a spinneret 12 formed with a plurality of nozzles (not shown) for spinning a plurality of yarns Y downward. The spinning device 2 is arranged on the upper layer of the facility in which the spinning traction device 1 is provided, and the yarn limiting guide 7, the spinning stretching device 10, the first yarn guide roller 8, the second yarn guide roller 9, the yarn winder 4, the pressure reducing mechanism 40 and the heat dissipation mechanism 50 are arranged on the lower layer. The housing 30 is arranged across the upper layer and the lower layer. In addition, it should be noted that in Figure 1 In the figure, the description of the heat dissipation mechanism 50 is omitted.

[0037] The first godet roller 8 and the second godet roller 9 are rollers for pulling the plurality of yarns Y spun from the spinneret 12. Figure 1 As shown, the first wire guide roller 8 is a roller whose axial direction is roughly parallel to the left-right direction, and is arranged above the front end of the wire winding machine 4. In other words, the first wire guide roller 8 is arranged on the upstream side of the wire winding machine 4 in the wire travel direction of the multiple wires Y. The first wire guide roller 8 is driven to rotate by a motor not shown in the figure. The second wire guide roller 9 is a roller whose axial direction is roughly parallel to the left-right direction, and is arranged above and behind the first wire guide roller 8. The second wire guide roller 9 is driven to rotate by a motor not shown in the figure. In the present embodiment, when the wire Y is hooked on the first wire guide roller 8 and the second wire guide roller 9, the second wire guide roller 9 moves to a position near the first wire guide roller 8.

[0038] The yarn regulating guide 7 is disposed above the first yarn godet roller 8. The yarn regulating guide 7 is, for example, a known comb-teeth-shaped yarn guide, and regulates the interval between adjacent yarns Y to a predetermined value when a plurality of yarns Y are hooked.

[0039] The spinning and drawing device 10 is a device for heating and drawing a plurality of yarns Y, and is arranged below the spinning device 2. The spinning and drawing device 10 includes a plurality of (eg, five) godet rollers (not shown) housed in a heat-insulating box 11.

[0040] (Wire winding machine 4)

[0041] Next, use Figure 1 as well as Figure 2 The yarn winding machine 4 will be described. Figure 2 1 is a front view of the yarn winding machine 4. The yarn winding machine 4 includes a machine body 20, a plurality of fulcrum yarn guides 21, a plurality of traverse yarn guides 22, a turntable 23, two bobbin holders 24, and a contact roller 25.

[0042] like Figure 1 As shown, the machine body 20 includes: a machine body main body 27, which is arranged upright at the rear of the wire winding machine 4; and a frame 28, which is fixed to the upper part of the machine body main body 27 and extends forward. The turntable 23 and the like are supported on the machine body main body 27. The contact roller 25 extending in the front-rear direction is supported on the frame 28.

[0043] The plurality of fulcrum yarn guides 21 are provided separately for the plurality of yarns Y and arranged in the front-rear direction. The plurality of fulcrum yarn guides 21 are attached to a yarn guide support member 29 supported by a frame 28, and hook the plurality of yarns Y respectively to serve as fulcrums when the plurality of yarns Y move laterally.

[0044] The plurality of traverse guides 22 are provided separately 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 Figure 3 ) is driven to reciprocate in the front-rear direction. As a result, the yarn Y hooked on the traverse yarn guide 22 moves laterally with the fulcrum yarn guide 21 as a fulcrum. For example, a plurality of traverse motors 81 are configured corresponding to the plurality of traverse yarn guides 22, respectively.

[0045] The turntable 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 27. The turntable 23 is driven by a turntable motor 82 (see Figure 3 ) is driven to rotate. The turntable 23 cantilever supports the two bobbin holders 24 and rotates around a rotation axis that is substantially parallel to the front-rear direction, thereby moving the two bobbin holders 24. Thus, in the wire winding machine 4, the wire winding position ( Figure 1 as well as Figure 2 The bobbin holder 24 is in the upper position of the winding machine and the yarn Y is not wound in the standby position ( Figure 1 as well as Figure 2Furthermore, while the bobbin B mounted on the bobbin holder 24 located at the yarn winding position is winding the yarn Y, the bobbin B can be replaced with the bobbin holder 24 located at the standby position.

[0046] The two bobbin holders 24 are used to install a plurality of bobbins B, respectively. The two bobbin holders 24 are rotatably supported on the upper end and the lower end of the turntable 23 supported by the machine body 27, respectively, and extend forward from the turntable 23. In other words, the two bobbin holders 24 are cantilever-supported by the machine body 27 disposed on the rear side. The axial directions of the two bobbin holders 24 are substantially parallel to the front-rear direction. In addition, the front end side (front side) of the bobbin holder 24 is generally the working side where the operation of installing the bobbin B, etc., on the bobbin holder 24 is performed.

[0047] On each bobbin holder 24, a plurality of bobbins B individually provided for a plurality of yarns Y are arranged in the front-to-back direction. The number of bobbins B installed in one bobbin holder 24 is, for example, 16. In addition, the two bobbin holders 24 are each driven by a separate winding motor 83 (see Figure 3 )Rotation drive.

[0048] The contact roller 25 is a roller whose axial direction is substantially parallel to the front-rear direction, and is arranged just above the upper bobbin holder 24. The contact roller 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, applies contact pressure to the outer peripheral surfaces of the packages P being wound, and adjusts the shape of the packages P.

[0049] In the yarn winding machine 4 having the above-described configuration, when the upper bobbin holder 24 is rotationally driven, the yarn Y laterally moved by the traverse guide 22 is wound around the bobbin B to form a package P.

[0050] (Housing 30)

[0051] The housing 30 accommodates a plurality of yarns Y spun out from the spinneret 12 and traveling toward the yarn winding machine 4, and a plurality of packages P formed by winding the plurality of yarns Y around a plurality of bobbins B, respectively. Figure 1 As shown, in this embodiment, the housing 30 accommodates the spinning device 2, the yarn limiting guide 7, the spinning and drawing device 10, the first godet roller 8 and the second godet roller 9, and the yarn winder 4.

[0052] like Figure 1As shown, 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 for example, a sliding door, a flat door, etc. can be cited. The discharge opening 31, the first opening 32, and the second opening 33 are provided on the front surface of the housing 30.

[0053] 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 portion 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 at substantially the same height as the bobbin holder 24 located at the standby position. Furthermore, the discharge opening 31 is sized to discharge the package P mounted on the bobbin holder 24 located at the standby position. When the discharge opening 31 is opened, 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 becomes sealed.

[0054] The first opening 32 is an opening for approaching the spinneret 12 from the outside of the housing 30. The first opening 32 is provided at the upper portion 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 at a height substantially the same as the spinneret 12 or at a position slightly below the spinneret 12. Furthermore, the first opening 32 is of a size that can be entered by the hand of an operator, the arm of an operating robot, etc. When the first opening 32 is opened, the spinneret 12 can be approached from the outside of the housing 30, and when the first opening 32 is closed, the internal space 70 of the housing 30 becomes a sealed state. In addition, although not shown in the figure in this embodiment, a cooling device for cooling the plurality of yarns Y, an oiling agent nozzle for applying an oiling agent to the plurality of yarns Y, etc. are generally arranged below the spinning device 2. Such a cooling device and an oiling agent nozzle can also be approached from the outside of the housing 30 via the first opening 32 in an open state.

[0055] 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 disposed at a position above the discharge opening 31 on the front surface of the housing 30. More specifically, the second opening 33 is disposed on the front surface of the housing 30 at a position substantially at the same height as the first godet roller 8. Furthermore, the second opening 33 is of a size that can be entered by the hand of an operator, the arm of an operating robot, and the like. When the second opening 33 is opened, the first godet roller 8 and the second godet roller 9 moved to the vicinity of the first godet roller 8 can be accessed from the outside of the housing 30, and when the second opening 33 is closed, the internal space 70 of the housing 30 becomes a sealed state. In addition, in the present embodiment, the spinning and stretching device 10 can also be accessed from the outside of the housing 30 via the second opening 33 in an open state.

[0056] As described above, in the present embodiment, when the discharge opening 31 , the first opening 32 , and the second opening 33 are all closed, the internal space 70 of the housing 30 is in a sealed state.

[0057] (Pressure Reducing Mechanism 40)

[0058] The decompression mechanism 40 can decompress the interior of the housing 30. More specifically, the decompression mechanism 40 can decompress the interior of the housing 30 in which the internal space 70 is sealed. Figure 1 As shown, the decompression mechanism 40 includes a pump 41 disposed outside the housing 30 and a connecting 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 connecting passage 42. Figure 1 As shown, the connection passage 42 is connected to the housing 30 at a position closer to the yarn winder 4 than the spinneret 12 .

[0059] (Heat dissipation mechanism 50)

[0060] Secondly, refer to Figure 3 The heat dissipation mechanism 50 will be described. Figure 3 In the figure, the description of the wire Y is omitted for the sake of explanation. The heat dissipation mechanism 50 is used to dissipate the heat generated by the heat generating component 80 arranged inside the housing 30 to the outside of the housing 30. The heat generating component is a component that generates heat when the wire winding machine 4 is driven. The heat generating component 80 includes, for example, the traverse motor 81, the turntable motor 82, and the winding motor 83 of the present embodiment. In addition, a control device for controlling the drive of the above-mentioned motors, etc. may also be included in the heat generating component.

[0061] like Figure 3As shown, the heat dissipation mechanism 50 has a heat dissipation component 51, a circulation flow path 52, a circulation pump 53, and cooling plates 54 and 55 (cooling components of the present invention). The heat dissipation component 51 is arranged outside the housing 30 and is a component open to the atmosphere. The heat dissipation component 51 is, for example, a radiator. The circulation flow path 52 is in contact with the heat dissipation component 51 and the heat generating component 80, and a fluid circulates inside. The fluid circulating inside is, for example, water, oil, etc. The circulation pump 53 is used to circulate the fluid in the circulation flow path 52. By driving the circulation pump 53, the fluid in the circulation flow path 52 is sucked by the circulation pump, and the fluid moves to the Figure 3 Flows in the direction of the solid arrow.

[0062] The fluid flowing in the circulation channel 52 is cooled by opening to the atmosphere through the heat dissipation component 51 in the area of ​​the circulation channel 52 that contacts the heat dissipation component 51. As a result, in the direction of fluid flow, the fluid flowing in the area of ​​the circulation channel 52 that is downstream of the heat dissipation component 51 becomes low temperature. The low-temperature fluid further flows in the circulation channel 52 and reaches the area in contact with each heat generating component 80. Thus, the fluid flowing in the circulation channel 52 exchanges heat with the heat generated from the heat generating component 80. The fluid that has become high temperature through the heat exchange with the heat generating component 80 circulates to the heat dissipation component 51 side again and is cooled by opening to the atmosphere through the heat dissipation component 51. As described above, the heat dissipation mechanism 50 dissipates the heat generated by the heat generating component 80 to the outside of the housing 30.

[0063] Here, when the distance between the heat dissipating component 51 and the heat generating component 80 is far, the temperature of the fluid may rise until the low-temperature flow reaches the area in contact with the heat generating component 80 in the body circulation flow path 52. As a result, the efficiency of heat exchange between the fluid and the heat generated by the heat generating component 80 decreases. For example, in this embodiment, Figure 3 As shown, the plurality of traverse motors 81 are separated from the heat dissipation component 51. Therefore, the heat exchange efficiency between the fluid flowing in the circulation flow path 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 components 80 (turntable motor 82, winding motor 83, etc.).

[0064] Therefore, in the present embodiment, the heat dissipation mechanism 50 has cooling plates 54 and 55 for cooling the fluid flowing in the circulation flow path 52. The cooling plates 54 and 55 are provided inside the housing 30 and are in contact with the circulation flow path 52. Specifically, in the direction of fluid flow, the cooling plate 54 is in contact with the circulation flow path 52 in a region on the upstream side of the region in contact with the plurality of traverse motors 81 in the circulation flow path 52. In addition, in the direction of fluid flow, the cooling plate 55 is in contact with the circulation flow path 52 in a region on the downstream side of the region in contact with the plurality of traverse motors 81 in the circulation flow path 52. Thus, heat generated from each traverse motor 81 can also be heat-exchanged with the fluid maintained at a low temperature by being cooled by the cooling plates 54 and 55. In addition, in the present embodiment, the cooling plate 54 is supported by, for example, the machine body 27. The cooling plate 55 is supported by, for example, the frame 28.

[0065] (Output when rotating the bobbin holder)

[0066] Next, refer to Figure 4 as well as Figure 5 The relationship between the output [kW] required to rotationally drive the bobbin holder 24 when winding the plurality of yarns Y onto the bobbins B and the internal pressure of the housing 30 will be described.

[0067] Figure 4 : is a graph showing the power [kW] required to drive the bobbin holder 24 to rotate when the internal pressure of the housing 30 is changed by the pressure reducing mechanism 40. Here, the power [kW] required to drive the bobbin holder 24 to rotate increases as the diameter of the package P increases. Figure 4 In the calculation, the output [kW] required to drive the bobbin holder 24 to rotate is calculated for each diameter of the package P that changes. Figure 4 The values ​​shown for output [kW] are simulated values. Figure 5 This is a table showing various conditions when the yarn Y is wound. Figure 4 The simulated values ​​shown are based on Figure 5 The conditions shown are calculated.

[0068] like Figure 5 As shown, the number of ends of the wire winding machine 4 (the number of bobbins B installed on one bobbin holder 24) is 12. The winding width of the wire Y-direction bobbin B is 122 mm, and the winding density is 0.95 g / cm 3 The tension of the yarn Y wound on 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-to-back direction (axial direction) is 1.8 m. Figure 5Although not described in the specification, the diameter of the package P at the start of winding the yarn Y is 120 mm. The peripheral speed of the package P during winding of the yarn Y is substantially constant from the start of winding the yarn Y onto the bobbin B to the end of winding.

[0069] Figure 4 The vertical axis represents the output value [kW]. Figure 4 The horizontal axis of represents the pressure of the five modes inside the housing 30. The pressure of the five modes is 0.01 atmospheric pressure ( Figure 4 a), 0.5 atmosphere ( Figure 4 b) and 0.7 atmospheres ( Figure 4 c), 0.9 atmosphere ( Figure 4 d) and 1.0 atmospheric pressure ( Figure 4 In addition, Figure 4 The horizontal axis is divided into 10 levels to represent the diameter of the package P that varies. Figure 4 The diameters of the packages P shown are 124 mm, 150 mm, 200 mm, 250 mm, 300 mm, 350 mm, 380 mm, 400 mm, 430 mm, and 440 mm. Figure 4 The horizontal axis of shows five modes of pressure inside the housing 30 for each diameter [mm] of the package P divided into 10 levels. Figure 4 In FIG. 1 , for each of the diameters of the package P that varies (10 levels), the values ​​of the output [kW] required to rotate the bobbin holder 24 when the inside of the housing 30 is in the above-mentioned five pressure patterns are indicated by bars.

[0070] Figure 4 The cross-hatched portion of the bar in represents the output required for rotating the bobbin holder 24, which is the output required due to the tension loss of the yarn Y. The tension loss of the yarn Y is the load applied to the bobbin holder 24 due to the tension of each yarn Y hooked on the plurality of bobbins B. Figure 4 The blank portion of the bar in represents the output required due to shaft loss, among the outputs required to rotate the bobbin holder 24. The shaft loss refers to the load applied to the bobbin holder 24 as the bobbin holder 24 rotates. Figure 4 The shaded portion of the bar in represents the output required due to wind loss, among the outputs required to rotate the bobbin holder 24. The wind loss refers to the load applied to the bobbin holder 24 due to the air resistance applied to the package P.

[0071] like Figure 4As shown, among the outputs required to rotate the bobbin holder 24, the output required due to the tension loss of the yarn Y (cross-hatched portion) is substantially the same value even if the diameter of the package P changes, and is substantially the same value even if the pressure inside the housing 30 changes. In other words, 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 internal pressure of the housing 30.

[0072] like Figure 4 As shown, the output required due to shaft loss (blank portion) of the output required to rotate the bobbin holder 24 is approximately the same value even if the pressure inside the housing 30 is changed. That is, it is considered that the output required due to shaft loss is hardly affected by the internal pressure of the housing 30. On the other hand, the output required due to shaft loss (blank portion) decreases as the diameter of the package P increases. This is considered to be due to the following reasons. That is, in the case where the circumferential speed of the package P is desired to be constant from the beginning to the end of winding the yarn Y onto the bobbin B, the larger the diameter of the package P, the slower the rotation speed of the bobbin holder 24 needs to be. The faster the rotation speed of the bobbin holder 24, the greater the shaft loss. Therefore, when the rotation speed of the bobbin holder 24 slows down as the diameter of the package P increases, the shaft loss decreases and the output required due to shaft loss also decreases. However, as Figure 4 As shown, the ratio of the output required due to shaft loss to the total output required to rotate the bobbin holder 24 is very small. Therefore, it can be said that the change in the output required due to shaft loss has very little influence on the output required to rotate the bobbin holder 24.

[0073] like Figure 4 As shown in FIG. 1 , the lower the internal pressure of the housing 30 is, the less the output (shaded portion) required for the wind loss in the output required to rotate the bobbin holder 24 is. Figure 4 As shown, the output required for rotating the bobbin holder 24 accounts for a large proportion of the total output required for wind loss (for example, see Figure 4 Thus, it can be said that the pressure inside the housing 30 is reduced by the pressure reducing mechanism 40, thereby suppressing the output required due to wind loss, and further suppressing the entire output required to rotate the bobbin holder 24.

[0074] In addition, if Figure 4 As shown in FIG. 1 , the output required due to wind loss (hatched portion) increases as the diameter of the package P increases. However, as the pressure inside the housing 30 decreases, the degree of reduction in the output required due to wind loss increases as the diameter of the package P increases. In other words, it can be said that the larger the diameter of the package P, the greater the effect of output suppression due to the pressure reduction inside the housing 30 can be obtained.

[0075] As described above, by reducing the pressure inside the housing 30 by the decompression mechanism 40 , the output required to rotationally drive the bobbin holder 24 can be effectively suppressed.

[0076] Here, generally, in the power consumption of a wire winding machine (for example, a wire winding machine without a decompression mechanism 40), in addition to (1) the output required to rotate and drive the bobbin holder 24 (hereinafter, also referred to as the output of (1)), it also includes (2) the output required to reciprocate the multiple traverse guides 22 (hereinafter, also referred to as the output of (2)), and (3) the output required when the control device controls the drive of each motor, etc. (hereinafter, also referred to as the output of (3)). In contrast, in the power consumption of the wire winding machine 4 of the present embodiment, in addition to the outputs (1) to (3) above, it also includes (4) the output required to drive the decompression mechanism 40 (hereinafter, also referred to as the output of (4)), and (5) the output required to drive the heat dissipation mechanism 50 (hereinafter, also referred to as the output of (5)). However, the outputs of (2) to (5) above are very small values ​​compared to the output of (1), and suppressing the output of (1) helps to suppress the overall power consumption of the wire winding machine. hereinafter, refer to Figure 6 The following describes how the wire winding machine 4 of the present embodiment can reduce the power consumption of the entire wire winding machine compared to a conventional wire winding machine.

[0077] (Power consumption of the wire winding machine)

[0078] Figure 6 The integrated value of the output of (1) above, i.e., the integrated power [kW·h], is shown in 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 air pressure inside the housing 30 is changed. Figure 6 In the embodiment, the air pressure inside the housing 30 is 1.0 air pressure, 0.5 air pressure, 0.3 air pressure, 0.1 air pressure, 0.05 air pressure, 0.01 air pressure, and 0.005 air pressure. When the air pressure is 1.0, the pressure inside the housing 30 is not reduced, that is, the conventional wire winding machine without the pressure reducing mechanism 40 is virtually reproduced. Figure 6 In FIG. 1 , the suppressed power [kW·h] relative to the integrated power at the time of 1.0 gas pressure is also shown.

[0079] like Figure 6 As shown, the accumulated power is suppressed in any case where the air pressure inside the housing 30 is reduced, compared to the case where the air pressure inside the housing 30 is 1.0 atmosphere. In particular, when the air pressure inside the housing 30 is 0.05 atmosphere to 0.3 atmosphere, the accumulated power can be effectively suppressed, and when the air pressure inside the housing 30 is 0.1 atmosphere, the accumulated power can be suppressed more effectively.

[0080] From the above, it can be seen that in the wire winding machine 4 of the present embodiment equipped with the decompression mechanism 40, the output of (1) can be effectively suppressed compared with the conventional wire winding machine without the decompression mechanism 40. Moreover, the decompression mechanism 40 preferably decompresses the interior of the housing 30 to 0.05 atmospheric pressure to 0.3 atmospheric pressure, and more preferably decompresses to 0.1 atmospheric pressure. In addition, it can be seen that when the interior of the housing 30 is decompressed, the outputs of the above (2) and (3) are slightly reduced (data not shown). And, as mentioned above, the outputs of the above (2) to (5) are originally very small values ​​compared to the output of the above (1). Based on the above, it is speculated that by decompressing the interior of the housing 30, not only the output of (1) can be reduced, but also the power consumption of the wire winding machine as a whole can be reduced.

[0081] (Effect)

[0082] The spinning and drawing device 1 of the present embodiment includes: a spinning device 2 having a spinneret 12 for spinning a plurality of yarns Y downward; a yarn winding machine 4 having a bobbin holder 24 on which a plurality of bobbins B for winding the plurality of yarns Y spun from the spinneret 12 are mounted; a housing 30 for accommodating a plurality of yarns Y spun from the spinneret 12 and advancing toward the yarn winding machine 4, and a plurality of packages P formed by winding the plurality of yarns Y on the plurality of bobbins B; and a decompression mechanism 40 for decompressing the interior of the housing 30. The housing 30 is provided with a discharge opening 31 for discharging the plurality of packages P and which can be opened and closed. When the discharge opening 31 is opened, the plurality of packages P can be discharged from the interior of the housing 30, and when the discharge opening 31 is closed, the internal space 70 of the housing 30 becomes a sealed state.

[0083] According to the present embodiment, when the yarn Y spun from the spinning device 2 is wound around the bobbin B to form a package P, the discharge opening 31 is closed, so that the internal space 70 of the housing 30 can be sealed. By driving the decompression mechanism 40 in this state, the interior of the housing 30 can be decompressed. As a result, the air around the package P is reduced, and the air resistance applied to the package P can be effectively suppressed. Therefore, the load when the bobbin holder 24 rotates is greatly reduced, and the effect of reducing the power consumption of the yarn winding machine 4 when winding the yarn Y can be improved.

[0084] In addition, in the spinning and drawing device 1 of the present embodiment, the housing 30 is provided with a first opening 32 that can be opened and closed for accessing the spinneret 12 from the outside of the housing 30. When the first opening 32 is opened, the spinneret 12 can be accessed from the outside of the housing 30, and when the first opening 32 is closed, the internal space 70 of the housing 30 becomes a sealed state. In the present embodiment, when the operator performs maintenance on the spinneret 12, the operator can easily access the spinneret 12 through the first opening 32 that is provided separately from the discharge opening 31.

[0085] In addition, in the spinning and drawing device 1 of the present embodiment, the decompression mechanism 40 has a pump 41 disposed outside the housing 30, and a connecting passage 42 connecting the housing 30, the pump 41. The connecting passage 42 is connected to the housing 30 at a position closer to the yarn winder 4 than the spinneret 12. According to the present embodiment, most of the air sucked by the pump 41 flows into the connecting passage 42 from the spinneret 12 toward the yarn winder 4. 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 flows along the yarn Y traveling from the spinneret 12 toward the yarn winder 4. Thus, the collision between the air sucked by the pump 41 and the air flowing along the traveling yarn Y can be suppressed, and the yarn swing caused by the turbulence of the air flow accompanying the collision between the air can be suppressed.

[0086] Furthermore, in the spinning and drawing device 1 of the present embodiment, in the yarn traveling direction, the first godet roller 8 and the second godet roller 9 for conveying the plurality of yarns Y spun from the spinneret 12 to the yarn winder 4 are arranged on the upstream side of the yarn winder 4. The housing 30 is provided with a second opening 33 that can be opened and closed. When the second opening 33 is opened, the first godet roller 8 and the second godet roller 9 can be approached from the outside of the housing 30, and when the second opening 33 is closed, the internal space 70 of the housing 30 becomes a sealed state. According to the present embodiment, the operator can easily approach the first godet roller 8 and the second godet roller 9 through the second opening 33 that is provided separately from the discharge opening 31, so it is easy to hang the yarn on each godet roller.

[0087] Furthermore, in the spinning and drawing device 1 of the present embodiment, a heat generating component 80 that generates heat when the yarn winding machine 4 is driven is arranged inside the housing 30, and a heat dissipation mechanism 50 that dissipates the heat generated by the heat generating component 80 to the outside of the housing 30 is included. If the pressure inside the housing 30 is reduced when the yarn Y is wound onto the bobbin B, the amount of air that serves as a medium for heat dissipation of the heat generating component 80 decreases, and thus the heat dissipation efficiency of the heat generating component 80 decreases. As a result, the temperature inside the housing 30 increases, which causes a malfunction of the yarn winding machine 4. In the present embodiment, the heat generated from the heat generating component 80 is dissipated to the outside of the housing 30 by the heat dissipation mechanism 50, and therefore, even if the pressure inside the housing 30 is reduced, the heat dissipation efficiency can be fully ensured.

[0088] In addition, in the spinning and drawing device 1 of the present embodiment, the heat dissipation mechanism 50 includes: a heat dissipation component 51, which is open to the atmosphere outside the housing 30; a circulation flow path 52, which is in contact with the heat dissipation component 51 and the heat generating component 80, and the fluid circulates inside; and a circulation pump 53, which 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 component 80 and the fluid flowing in the circulation flow path 52. The fluid that has become high temperature through the heat exchange with the heat generating component 80 circulates to the heat dissipation component 51 side, and is dissipated by being opened to the atmosphere through the heat dissipation component 51. Then, the fluid after the heat dissipation is circulated to the heat generating component 80 side again to perform the above-mentioned heat exchange. Through the above, the heat generated from the heat generating component 80 can be continuously dissipated to the outside of the housing 30.

[0089] Furthermore, in the spinning and drawing device 1 of the present embodiment, the heat dissipation mechanism 50 includes cooling plates 54 and 55, which are provided inside the housing 30 and cool the fluid flowing in the circulation flow path 52. According to the present embodiment, the fluid flowing in the circulation flow path 52 is further cooled by the cooling plates 54 and 55. Therefore, the fluid transported to the heat generating component 80 side becomes lower temperature, so that heat exchange between the heat generating component 80 and the fluid can be performed more effectively.

[0090] (Variation Example)

[0091] Hereinafter, a modified example in which the above-mentioned embodiment is modified will be described. Hereinafter, the same reference numerals are given to components having the same configuration as the above-mentioned embodiment, and the description thereof will be appropriately omitted.

[0092] In the above embodiment, the housing 30 accommodates the spinning device 2, the yarn limiting guide 7, the spinning stretching device 10, the first godet roller 8 and the second godet roller 9, and the yarn winder 4. However, the housing 30 is not limited to the above embodiment as long as it accommodates the plurality of yarns Y spun out from the spinneret 12 and advancing toward the yarn winder 4, and the plurality of packages P formed by winding the plurality of yarns Y on the plurality of bobbins B. For example, the housing 30 may also accommodate a portion of the spinning device 2 including the entire spinneret 12, the yarn limiting guide 7, the spinning stretching device 10, the first godet roller 8 and the second godet roller 9, and a portion of the yarn winder 4 including the plurality of packages P.

[0093] In the above embodiment, the housing 30 is provided with the discharge opening 31, the first opening 32, and the second opening 33. However, the first opening 32 and the second opening 33 may not be provided. In the case where the first opening 32 is not provided, for example, a robot arm for maintaining the spinneret 12 may be arranged inside the housing 30. In the case where the second opening 33 is not provided, for example, each godet roller may be approached through the discharge opening 31. In addition, the discharge opening 31 and the second opening 33 may be large openings that are integrated.

[0094] In the above embodiment, the connection passage 42 is connected to the housing 30 at a position closer to the yarn winder 4 than the spinneret 12. However, the connection passage 42 may be connected to any position of the housing 30.

[0095] In the above-described embodiment, the decompression mechanism 40 includes the pump 41 and the connection passage 42. However, the decompression mechanism 40 is not limited to such a configuration as long as it can decompress the interior of the housing 30.

[0096] In the above embodiment, the heat dissipation mechanism 50 has two cooling plates 54 and 55. However, only one cooling plate may be configured, or no cooling plate may be configured. In addition, the heat dissipation mechanism 50 of the above embodiment has a heat dissipation component 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 configured.

Claims

1. A spinning traction device, characterized in that: have: A spinning device having a spinneret that spins a plurality of threads downward; A yarn winding machine having a bobbin holder for mounting a plurality of bobbins for respectively winding the plurality of yarns spun from the spinneret; a casing for accommodating the plurality of yarns spun from the spinneret and advancing toward the yarn winding machine, and a plurality of packages formed by winding the plurality of yarns around the plurality of bobbins, respectively; and A decompression mechanism is capable of decompressing the interior of the housing. The housing is provided with an opening for discharging the plurality of packages, which can be opened and closed. When the discharge opening is opened, the plurality of packages can be discharged from the interior of the housing, and when the discharge opening is closed, the interior space of the housing is sealed.

2. The spinning and drawing device according to claim 1, characterized in that: The housing is provided with a first opening that is openable and closable and is used to access the spinneret from outside the housing. When the first opening is opened, the spinneret can be approached from the outside of the housing, and when the first opening is closed, the internal space of the housing is in a sealed state.

3. The spinning and drawing device according to claim 1 or 2, characterized in that: The decompression mechanism includes a pump disposed outside the housing and a connection passage connecting the housing and the pump. The connection passage is connected to the housing at a position closer to the yarn winder than the spinneret.

4. The spinning and drawing device according to any one of claims 1 to 3, characterized in that: A guide roller is arranged on the upstream side of the yarn winding machine in the yarn running direction, and the guide roller is used to convey the plurality of yarns spun from the spinneret to the yarn winding machine. The housing is provided with a second opening that can be opened and closed. When the second opening is opened, the godet roller is accessible from the outside of the housing, and when the second opening is closed, the internal space of the housing is in a sealed state.

5. The spinning and drawing device according to any one of claims 1 to 4, characterized in that: A heat generating component that generates heat when the wire winding machine is driven is arranged inside the housing. The spinning and drawing device includes a heat dissipation mechanism that dissipates heat generated by the heat generating component to the outside of the housing.

6. The spinning and drawing device according to claim 5, characterized in that: The heat dissipation mechanism has: A heat dissipation component is open to the atmosphere outside the housing; A circulation flow path, in contact with the heat dissipation component and the heat generation component, wherein the fluid circulates inside; as well as The circulation pump circulates the above fluid in the circulation flow path.

7. The spinning and drawing device according to claim 6, characterized in that: The heat dissipation mechanism includes a cooling member that is provided inside the housing and cools the fluid flowing in the circulation flow path.

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