Spinning machine

Abstract

An adding part (90) of a spinning machine (1) is provided with a storage part (93), a nozzle (60), a first guide part (61), a second guide part (62) and a discharge part (55). The storage part (93) stores a liquid additive. The nozzle (60) generates a floating additive, which is a bubble-like or mist-like additive, by supplying compressed air from the injection hole (60c). The floating additive generated by the nozzle (60) flows through the first guide part (61), and is discharged from a first opening (61b) located above the injection hole (60c). A space through which the floating additive discharged from the first opening (61b) flows is formed in the second guide part (62), and the floating additive is discharged from a second opening (62b) located below the first opening (61b). The discharge unit (55) discharges the mist-like additive generated in the storage unit (93) to the outside of the storage unit (93).

Description

Technical Field

[0001] This invention relates primarily to a spinning machine that supplies air containing additives to the spinning unit. Background Technology

[0002] Patent document 1 is Japanese Patent Application Publication No. 2020-143382.

[0003] The spinning machine of Patent Document 1 includes a first spinning pipe, an additive supply device, and a delivery pipe. The first spinning pipe supplies compressed air toward the spinning unit. The additive supply device supplies compressed air to the additive from a nozzle and atomizes the additive by foaming, thereby generating air containing the additive. The delivery pipe supplies the air containing the additive to the first spinning pipe. Summary of the Invention

[0004] Patent Document 1 does not describe the detailed structure of the nozzle or the like used to atomize the additive. Here, when compressed air is supplied to the additive, not only atomized additive but also bubbly additive is produced. For example, when bubbly additive is produced, if the bubble size is too large, it may sometimes hinder the transport of the atomized additive.

[0005] The present invention was made in view of the above circumstances, and its main objective is to provide a spinning machine in which the conveyance of atomized additives is difficult to obstruct.

[0006] The problem to be solved by this invention is as described above. The means used to solve this problem and its effects will be described below.

[0007] According to an aspect of the present invention, a spinning machine with the following structure is provided. That is, the spinning machine includes multiple spinning units, piping, and an additive section. The spinning units generate and wind yarn. Compressed air flows toward the spinning units in the piping. The additive section generates additive air containing an additive and supplies the additive air to the piping. The additive section includes a retention section, a nozzle, a first guide section, a second guide section, and a discharge section. The retention section retains the liquid additive. A jet orifice is formed in the nozzle, and by supplying compressed air to the additive retained in the retention section through the jet orifice, a floating additive, which is a bubble or mist, is generated. The first guide section extends vertically, at least covering the jet orifice, and forms a space for the floating additive generated by the nozzle to flow, discharging the floating additive from a first opening located above the jet orifice. The second guide section forms a space for the floating additive discharged from the first opening to flow, discharging the floating additive from a second opening located below the first opening. The discharge section discharges the additive, which is in the form of a mist generated in the retention section, to the outside of the retention section.

[0008] By using the first and second guide portions to restrict the passage of the floating additive, the discharge of the foam-like additive can be suppressed, and the expansion of the bubble size can be inhibited. As a result, the transport of the mist-like additive is less likely to be obstructed.

[0009] In the aforementioned spinning machine, preferably, the additive section includes a third guide section that forms a space for the floating additive discharged from the second opening to flow, and discharges the floating additive from a third opening located above the second opening.

[0010] Therefore, it is possible to suppress the expansion of bubble size in foamy additives.

[0011] In the aforementioned spinning machine, the following structure is preferred: the feeding section includes an inlet passage and an internal check valve. The inlet passage is movable integrally with the accumulator section, allowing compressed air to flow toward the nozzle. The internal check valve is disposed in the inlet passage, allowing fluid toward the nozzle to pass through and inhibiting the passage of fluid from the nozzle toward the inlet passage.

[0012] This prevents the additive from flowing from the addition section relative to the compressed air supply side. Furthermore, since the inlet passage and internal check valve move integrally with the accumulator, backflow of fluid can be prevented even during maintenance or other operations that temporarily change the position of the accumulator.

[0013] In the aforementioned spinning machine, the following structure is preferred: The injection holes are oriented to inject compressed air upwards. The diameter of the injection holes is 0.5 mm to 1 mm. The number of injection holes is 4 to 12.

[0014] By supplying compressed air upwards, the floating additive readily flows toward the first opening, which is located above the injection orifice. The diameter and number of injection orifices affect the state of the floating additive produced by the nozzle (e.g., the size and amount of bubbles), and by setting them within the aforementioned range, an appropriate state can be achieved.

[0015] In the aforementioned spinning machine, the following structure is preferred: An inflow hole is formed in the first guide portion to allow the additive to flow into the first guide portion. The diameter of the inflow hole is 0.5 mm or more and 3 mm or less. The number of inflow holes is 2 or more and 8 or less.

[0016] The diameter and number of inlet holes affect the amount of additive flowing into the first guide section. By setting them within the range described above, an appropriate amount of additive can be allowed to flow in.

[0017] In the aforementioned spinning machine, the following structure is preferred: The retention section has a first bottom and a second bottom located below the first bottom. When viewed from above, the nozzle and the first guide section overlap with at least a portion of the second bottom. Regarding the second container section formed in the vertical direction between the first bottom and the second bottom, the cross-sectional area of ​​the effective volume portion when cut with a plane perpendicular to the vertical direction is smaller than the cross-sectional area of ​​the first container section formed above the first bottom. The injection hole is located below the first bottom.

[0018] Therefore, when the water level of the additive is lower than the first bottom, only a small amount of additive remains, and the additive section can generate added air.

[0019] In the aforementioned spinning machine, the flow path cross-sectional area of ​​the first guide section is preferably 100 mm². 2 The above 3000mm 2 the following.

[0020] The cross-sectional area of ​​the flow path of the first guide section affects the ease of liquefaction of the floating additive and the bubble size. By setting it to the above range, an appropriate state can be achieved.

[0021] In the aforementioned spinning machine, the following structure is preferred: the retention section includes a float and a detection section. The float moves up and down according to the liquid level of the additive. The detection section detects the vertical position of the float.

[0022] This allows for the detection of the remaining amount of additives.

[0023] In the aforementioned spinning machine, the following structure is preferred: The discharge section includes a discharge passage and an external check valve. The discharge passage is movable integrally with the retention section, allowing the atomized additive to flow from the discharge section toward the piping. The external check valve is disposed in the discharge passage, allowing fluid toward the piping to pass through and inhibiting the passage of fluid from the piping toward the discharge section.

[0024] This prevents the additive from flowing back from the piping towards the addition section. Furthermore, since the discharge passage and external check valve are integrated with the accumulator, they are easy to handle.

[0025] In the aforementioned spinning machine, the flow path cross-sectional area of ​​the external check valve is preferably 40 mm². 2 Above 1000mm 2 the following.

[0026] This makes it difficult for liquefaction to occur due to the collision of the mist-like additives. Attached Figure Description

[0027] Figure 1 This is a front view showing the overall structure of a spinning machine according to one embodiment of the present invention.

[0028] Figure 2 This is a diagram showing the structure of the compressed air supply section and the replenishment section.

[0029] Figure 3 It is a cross-sectional view when the added part is viewed horizontally. Detailed Implementation

[0030] Next, the spinning machine 1 of this embodiment will be described. Figure 1 As shown, the spinning machine 1 includes a blower housing 3, a control box 5, multiple spinning units 7, and a yarn receiving trolley 9. The multiple spinning units 7 are arranged in a specified direction.

[0031] A blower 11, which functions as a negative pressure source, is installed inside the blower housing 3.

[0032] The control box 5 houses a central control unit 13 and a display unit 15. The central control unit 13 centrally manages and controls all parts of the spinning machine 1. The central control unit 13 can communicate with each spinning unit 7 (more specifically, a unit control unit). The display unit 15 displays images and other data based on information received by the central control unit 13 from the spinning units 7.

[0033] Each spinning unit 7 mainly comprises a drafting device 21, an air spinning device 23, a yarn storage device 25, and a winding device 27 arranged sequentially from upstream to downstream. In the description of the spinning unit 7, "upstream" and "downstream" refer to the upstream and downstream directions of the yarn, fiber bundle 34, or the direction of travel of the yarn 30 during winding.

[0034] The drafting device 21 is located near the upper end of the frame 36 of the spinning machine 1. The drafting device 21 has four pairs of drafting rollers. The drafting device 21 clamps and conveys the yarn supplied from the sliver can (not shown) between the rollers of each pair of drafting rollers, thereby stretching it to a predetermined amount of fiber to generate a fiber bundle 34. The fiber bundle 34 generated in the drafting device 21 is supplied to the air spinning device 23 located downstream of the drafting device 21.

[0035] The air spinning device 23 uses a swirling airflow to twist the fiber bundle 34, which has been drawn by the drafting device 21, thereby generating spun yarn 30. In detail, the air spinning device 23 includes a fiber guide section, a spinning chamber, a spinning nozzle (swirling airflow generating nozzle), and a hollow guide shaft (not shown in the diagram). The fiber guide section guides the fiber bundle 34 supplied from the drafting device 21 into the spinning chamber. The spinning nozzle is positioned around the path through which the fiber bundle 34 travels. By injecting compressed air from the spinning nozzle into the interior of the spinning chamber, a swirling airflow is generated within the spinning chamber. Through this swirling airflow, the fiber ends of the multiple fibers constituting the fiber bundle 34 reverse and swirl. The hollow guide shaft guides the generated spun yarn 30 from the spinning chamber to the outside of the air spinning device 23.

[0036] A yarn monitoring device 24 is provided downstream of the air spinning device 23. The spun yarn 30 generated by the air spinning device 23 passes through the yarn monitoring device 24 before being stored by the yarn storage device 25.

[0037] The yarn monitoring device 24 uses a light transmission type sensor to monitor the thickness and other properties of the traveling spinning yarn 30, and detects yarn defects contained in the spinning yarn 30. When a yarn defect is detected in the spinning yarn 30, the yarn monitoring device 24 sends a yarn defect detection signal to the unit control unit.

[0038] If the unit control unit receives a yarn defect detection signal from the yarn monitoring device 24, it cuts the spun yarn 30 by stopping the drive of the air spinning device 23 and / or the drafting device 21. Alternatively, a cutter can be used to cut the spun yarn 30.

[0039] The yarn retention device 25 includes a yarn retention roller 38. The yarn retention roller 38 is driven to rotate by a motor (not shown). The yarn retention roller 38 winds the spun yarn 30 around its outer circumference and temporarily retains it. By rotating at a predetermined speed with the spun yarn 30 wound on its outer circumference, the yarn retention roller 38 draws the spun yarn 30 out from the air spinning device 23 located upstream at a predetermined speed and conveys it downstream.

[0040] In this way, the yarn holding device 25 functions as a buffer for the spinning yarn 30 because it can temporarily hold the spinning yarn 30 on the outer periphery of the yarn holding roller 38. As a result, adverse conditions caused by the inconsistency between the spinning speed in the air spinning device 23 and the winding speed of the spinning yarn 30 for some reason (e.g., slack in the spinning yarn 30).

[0041] The winding device 27 includes a rocker arm 41, a winding drum 43, and a traverse guide 45. The rocker arm 41 is supported in a manner that allows it to swing about a support shaft and supports the yarn tube 47 for winding the yarn 30 in a rotatable manner. The winding drum 43 drives the package 49 to rotate in the winding direction by rotating while in contact with the outer peripheral surface of the yarn tube 47 or the package 49. The winding device 27 drives the winding drum 43 by reciprocating the traverse guide 45 using a drive mechanism (not shown) and by using an electric motor (not shown). Thus, the winding device 27 winds the yarn 30 onto the package 49 while traversing the yarn 30.

[0042] like Figure 1 As shown, a track is arranged on the frame 36 of the spinning machine 1 along the direction in which multiple spinning units 7 are arranged. A yarn-feeding carriage 9 is capable of traveling on the track and moving relative to the multiple spinning units 7. A yarn-feeding device 9a is provided on the yarn-feeding carriage 9. When the yarn-feeding carriage 9 travels to a spinning unit 7 where a yarn breakage has occurred, the yarn-feeding device 9a is used to perform a yarn-feeding operation for that spinning unit 7.

[0043] Next, refer to Figure 2 The structure for supplying compressed air and additives to each spinning unit 7 will be described. In the following description, "upstream" and "downstream" refer to upstream and downstream in the direction of flow of compressed air or additives.

[0044] The spinning machine 1 also includes a compressed air supply unit 70 and an air replenishment unit 90. The compressed air supply unit 70 includes a first inlet pipe 71, a second inlet pipe 72, a branch pipe 75, a first spinning pipe (pipe) 76, a second spinning pipe 77, a first unit pipe 78, and a second unit pipe 79.

[0045] The first inlet pipe 71 is connected to an air supply source 81. The air supply source 81 is a known compressor. Compressed air supplied from the air supply source 81 flows in the first inlet pipe 71. Downstream of the first inlet pipe 71, a second inlet pipe 72 is connected via a first main valve 82 that can be switched on and off. Compressed air from the first inlet pipe 71 flows in the second inlet pipe 72.

[0046] A filter 83 and a regulator 84 are installed in the second inlet pipe 72. The filter 83 purifies the compressed air by separating particulate matter from it. The regulator 84 regulates the pressure of the compressed air. The compressed air purified by the filter 83 and regulated by the regulator 84 is supplied to each spinning unit 7.

[0047] A branch pipe 75 is connected to the downstream end of the second introduction pipe 72. The branch pipe 75 branches into two parts and is respectively connected to the first spinning pipe 76 and the second spinning pipe 77. Thus, the compressed air sent out from the air supply source 81 flows in the first spinning pipe 76 and the second spinning pipe 77 respectively. The first spinning pipe 76 and the second spinning pipe 77 respectively extend along the arrangement direction of the spinning units 7. In the present embodiment, the compressed air supply portion 70 is arranged at the first end in the arrangement direction of the spinning units 7, and the first spinning pipe 76 and the second spinning pipe 77 extend from the branch pipe 75 arranged at the first end toward the second end in the arrangement direction. The compressed air toward the spinning units 7 flows in the first spinning pipe 76 and the second spinning pipe 77.

[0048] In the direction of the compressed air flow, a second main valve 85 capable of switching the opening and closing state is provided at the upstream end of the first spinning pipe 76. The second main valve 85 is located at a position upstream of the connection portion between the first spinning pipe 76 and the first unit pipe 78.

[0049] The first unit pipe 78 is connected to the first spinning pipe 76. One first unit pipe 78 supplies the compressed air from the first spinning pipe 76 to the corresponding one spinning unit 7. A first supply valve 86 capable of switching the opening and closing state is provided in the first unit pipe 78. On the other hand, the second unit pipe 79 is connected to the second spinning pipe 77. One second unit pipe 79 supplies the compressed air from the second spinning pipe 77 to the corresponding one spinning unit 7. A second supply valve 87 capable of switching the opening and closing state is provided in the second unit pipe 79. The unit pipes and the spinning units are not limited to one-to-one, and can also be one-to-many.

[0050] In the first spinning pipe 76, the portion between the second main valve 85 and the first unit pipe 78 on the most upstream side is supplied with a mist-like additive from the addition portion 90. Thus, the mist-like additive is mixed with the compressed air distributed and supplied to each spinning unit 7 via the first spinning pipe 76. On the other hand, the additive is not supplied from the addition portion 90 to the second spinning pipe 77.

[0051] The additive supplied from the addition portion 90 to the first spinning pipe 76 is, for example, a medicine containing a component for preventing the accumulation of oil agents in the air spinning device 23. The additive is a liquid. The medicine can also be a medicine that can impart at least one function such as antibacterial, deodorant, odor prevention, wax, etc. to the spun yarn 30 on the basis of or instead of the component for preventing the accumulation of oil agents.

[0052] The type of the additive can be appropriately determined in consideration of the requirements for the spun yarn 30, etc. The operator inputs an appropriate additive into the storage portion 93 according to the raw material of the sliver used in the spinning machine 1.

[0053] Hereinafter, compressed air containing a mist of additives supplied from the first spinning pipe 76 to each spinning unit 7 via the first unit pipe 78 is sometimes referred to as additive air. In addition, compressed air (compressed air without additives) supplied from the second spinning pipe 77 to each spinning unit 7 via the second unit pipe 79 is sometimes referred to as dry air.

[0054] When the spinning machine 1 is running, the first main valve 82 is in the open state. When using added air to spin the fiber bundle 34, the second main valve 85 and the first supply valve 86 are further in the open state, and the second supply valve 87 is in the closed state. Conversely, when using only dry air to spin the fiber bundle 34, the second main valve 85 and the first supply valve 86 are in the closed state, and the second supply valve 87 is in the open state. Furthermore, the switching of the open / closed states of each valve can be performed by the operator, the central control unit 13, or the unit control unit.

[0055] Next, refer to Figure 2 The addition section 90 is explained in detail.

[0056] The additive unit 90 generates a mist of additive and supplies it to the first spinning pipe 76. The spinning machine 1 has at least one additive unit 90. Alternatively, one additive unit 90 may be provided for each predetermined number of spinning units 7. Figure 2 As shown, the addition unit 90 includes an inflow pipe 91, a pressure regulating unit 92, a storage unit 93, and a connecting pipe 95.

[0057] The upstream end of the inflow pipe 91 is connected to the compressed air supply unit 70. Specifically, the upstream end of the inflow pipe 91 is connected to the second inlet pipe 72 (specifically, the second inlet pipe 72 between the filter 83 and the regulator 84). Compressed air from the second inlet pipe 72 flows in the inflow pipe 91. A pressure regulating unit 92 is disposed in the inflow pipe 91. The pressure regulating unit 92 regulates the pressure of the compressed air. The pressure regulating unit 92 is, for example, a pressure reducing valve.

[0058] The accumulator 93 is a pressure vessel capable of accumulating additives. Compressed air is supplied to the accumulator 93, and a mist of additives is generated using a mechanism described later. A connecting pipe 95 connects the additive unit 90 to the first spinning pipe 76. Furthermore, the pressure regulating unit 92 is set such that the pressure of the additive air flowing in the connecting pipe 95 is greater than the pressure of the compressed air flowing in the first spinning pipe 76. As a result, the connecting pipe 95 delivers (injects) the additive air generated in the additive unit 90 into the interior of the first spinning pipe 76. Consequently, the additive air generated in the additive unit 90 is mixed with the compressed air flowing in the first spinning pipe 76.

[0059] The added air thus generated further flows in the first spinning pipe 76 and is supplied to the spinning unit 7 via the first unit pipe 78. Specifically, it is supplied from the spinning nozzle of the air spinning device 23 in the spinning unit 7 to the fiber bundle 34. However, the added air can also be supplied to sources other than the air spinning device 23, for example, to the fiber bundle 34 being transported between the drafting device 21 and the air spinning device 23.

[0060] Next, refer to Figure 3 The mechanism for generating a mist of additives using compressed air is described.

[0061] like Figure 3 As shown, the storage section 93 includes a first container section 51, a second container section 52, and a cover 53. The first container section 51 and the second container section 52 each have a storage space for storing additives. The second container section 52 is a container-shaped portion formed by extending a portion of the first container section 51 (specifically, the portion where the nozzle 60, etc., is disposed) downwards. In detail, the second container section 52 is connected to the lower part of the first container section 51, allowing the additive to move from the first container section 51 to the second container section 52. Furthermore, the second bottom 52a formed in the second container section 52 is located lower than the first bottom 51a formed in the first container section 51. Additionally, in a cross-section cut with a plane perpendicular to the vertical direction, the cross-sectional area of ​​the effective volume portion of the second container section 52 is smaller than the cross-sectional area of ​​the effective volume portion of the first container section 51.

[0062] A cover 53 is provided on the upper surface of the first container section 51. By installing the cover 53, the first container section 51 and the second container section 52 can be sealed. When replenishing the additive, the operator removes the cover 53 from the storage section 93 and supplies the additive to the storage section 93 through the supply port where the cover 53 was previously installed.

[0063] As part of the intake and exhaust structure, the addition unit 90 includes an inlet unit 54 and an outlet unit 55.

[0064] The inlet section 54 is the part that introduces compressed air into the reservoir 93. Specifically, in this specification, the part of the compressed air supply that moves integrally with the reservoir 93 is referred to as the inlet section 54. That is, when the reservoir 93 is moved for maintenance or other reasons, the inlet section 54 also moves along with the reservoir 93. As a specific structure, in the addition section 90 of this embodiment, the component constituting the inlet section 54 is fixed to the reservoir 93, and a connector or the like is provided to detachably connect the inlet section 54 to the inflow pipe 91. Alternatively, other piping may be provided between the inlet section 54 and the inflow pipe 91.

[0065] The inlet section 54 includes an inlet passage 54a and an internal check valve 54b. The inlet passage 54a is a passage for compressed air supplied via the inlet pipe 91. The internal check valve 54b is disposed in the inlet passage 54a. The internal check valve 54b allows fluid to pass toward the downstream side (the nozzle 60 side described later) and inhibits the passage of fluid toward the upstream side (the inlet pipe 91 side).

[0066] By providing an internal check valve 54b, it is possible to suppress the flow of compressed air from the accumulator 93 toward the air supply source 81 (i.e., backflow). For example, during maintenance, the air supply source 81 may be shut off, causing a pressure drop on the air supply source 81 side; in such cases, the backflow of compressed air can also be suppressed. In particular, in this embodiment, the internal check valve 54b moves integrally with the accumulator 93. Therefore, even when the accumulator 93 is moved while disconnected from the inlet pipe 91, or when the inlet 54 is temporarily connected to other pipes, the backflow of compressed air can still be suppressed.

[0067] The discharge section 55 is the part that discharges the mist-like additive generated in the retention section 93 toward the outside of the retention section 93. The mist-like additive discharged from the discharge section 55 is discharged to the first spinning pipe 76 via the connecting pipe 95. In particular, in this specification, the part of the section for which the mist-like additive flows that moves integrally with the retention section 93 is referred to as the discharge section 55. That is, when the retention section 93 is moved for maintenance or other reasons, the discharge section 55 also moves with the retention section 93. As a specific structure, in the addition section 90 of this embodiment, the component constituting the discharge section 55 is fixed to the retention section 93, and a connector or the like is provided to detachably connect the discharge section 55 to the connecting pipe 95. In addition, other pipes may be provided between the discharge section 55 and the connecting pipe 95.

[0068] The discharge section 55 includes a discharge passage 55a and an external check valve 55b. The discharge passage 55a is a passage for the flow of the mist-like additive generated in the accumulator 93. The external check valve 55b is disposed in the discharge passage 55a. The external check valve 55b allows fluid to pass towards the downstream side (the side of the connecting pipe 95 and the side of the first spinning pipe 76) and inhibits the passage of fluid towards the upstream side (the side of the accumulator 93).

[0069] By providing an external check valve 55b, it is possible to suppress the flow (i.e., backflow) of added air from the connecting pipe 95 or the first spinning pipe 76 toward the storage section 93. For example, at the start of spinning, the pressure on the first spinning pipe 76 side may increase first, and in such cases, the backflow of added air can also be suppressed. In particular, the external check valve 55b of this embodiment can move integrally with the storage section 93, thus allowing for the integral processing of components related to the adding section 90.

[0070] Taking the case where the internal check valve 54b and external check valve 55b are integrated with the accumulator 93 as an example, the internal check valve 54b and external check valve 55b can also be located in piping further away from the accumulator 93. Furthermore, the internal check valve 54b and external check valve 55b are not essential structural elements. For example, these check valves can be omitted by precisely controlling the pressure upstream or downstream of the accumulator 93. Moreover, the structure is not limited to having the inlet passage 54a and internal check valve 54b integrated with the accumulator 93. For example, an external pipe can be connected to the opening of the accumulator 93.

[0071] In this embodiment, the internal check valve 54b and the external check valve 55b are normally open and are closed by applying pressure. Alternatively, the internal check valve 54b and the external check valve 55b may also be normally closed. Alternatively, one of the internal check valve 54b and the external check valve 55b may be normally open, and the other normally closed. Furthermore, in this embodiment, the internal check valve 54b and the external check valve 55b are spring-loaded. Alternatively, the internal check valve 54b and the external check valve 55b may be diaphragm-type or other types of check valves.

[0072] In addition, as a mechanism for generating a mist-like additive, the additive unit 90 includes a nozzle 60, a first guide unit 61, a second guide unit 62, and a third guide unit 63.

[0073] The nozzle 60 injects compressed air into the additive stored in the accumulator 93, producing a bubble-like or mist-like additive (hereinafter referred to as a floating additive). Specifically, the nozzle 60 has an air passage 60a, an air chamber 60b, and an injection hole 60c.

[0074] Air passage 60a extends vertically. "Extends vertically" means that the length of this component (in this case, air passage 60a) is approximately parallel to the vertical direction. An inlet passage 54a is connected to the upper end of air passage 60a. That is, compressed air flows downwards in air passage 60a. In this embodiment, air passage 60a is located at the center of the reservoir 93 when viewed from above, but this is only one example. An air chamber 60b is connected to the lower end of air passage 60a.

[0075] Compared to air passage 60a, air chamber 60b has a larger cross-sectional area when cut in a horizontal plane. Compressed air supplied via air passage 60a is temporarily stored in air chamber 60b and then ejected from injection port 60c. Furthermore, air chamber 60b is not a necessary structural element and can be omitted.

[0076] An injection hole 60c is formed on the upper surface of the air chamber 60b. In other words, the axis of the injection hole 60c is approximately parallel to the vertical direction. Compressed air is injected upward from the injection hole 60c. Here, an additive is present around the nozzle 60. Specifically, the injection hole 60c is located in the second container section 52. In other words, the injection hole 60c is located below the first bottom 51a (further in other words, below the center in the height direction of the accumulator 93). Therefore, the injection hole 60c injects compressed air upward onto the additive present in the second container section 52. As a result, the additive is bubbled or atomized around the outer side of the injection hole 60c to produce a floating additive.

[0077] The nozzle 60 is not limited to a structure that supplies compressed air from the top; it can also supply compressed air from other locations. Therefore, the case where the air passage 60a extends in the vertical direction is also an example. Furthermore, in order to move the floated additive upwards, it is preferable that the injection hole 60c faces upwards, but it can also be oriented in different ways.

[0078] The first guide section 61 moves the floating additive produced by the nozzle 60 while adjusting the state of the floating additive by restricting its path. Specifically, the first guide section 61 has a first guide passage 61a and a first opening 61b.

[0079] The first guide passage 61a extends in the vertical direction. A space is formed in the first guide passage 61a for the flow of the floating additive generated by the nozzle 60. Specifically, a first cylindrical member 56 is disposed on the outer side of the nozzle 60. The first guide passage 61a is formed by the inner circumferential surface of the first cylindrical member 56 and the outer circumferential surface of the air passage 60a. Furthermore, a first inflow hole (inflow orifice) 56a is formed in the first cylindrical member 56 for allowing the additive to flow into the first guide passage 61a. The first inflow hole 56a is positioned below the first bottom 51a and below the injection hole 60c.

[0080] The presence of the first guiding passage 61a limits the bubble size of the foamy additive. Therefore, the generation of excess foamy additive can be suppressed. Furthermore, excess foamy additive can liquefy due to mutual interaction. Here, since the first guiding passage 61a of this embodiment guides the floating additive upwards, the liquefied additive can fall back to the storage section 93. Therefore, no special path is needed to return the liquefied additive from the first guiding passage 61a to the storage section 93.

[0081] The first opening 61b is an opening for discharging the floating additive flowing along the first guide passage 61a. Since the first guide passage 61a is a structure that guides the floating additive upwards, the first opening 61b is located above the air passage 60a. When passing through the first opening 61b, there is a possibility that excessively large, bubble-like additives may not be able to pass through and may liquefy. Based on the above, the first guide portion 61 has the function of suppressing the generation of bubble-like additives.

[0082] Specifically, the hole formed on the upper part and side of the first cylindrical member 56 corresponds to the first opening 61b. In this embodiment, the axial direction of the first opening 61b is aligned with the radial direction. However, the axial direction of the first opening 61b can also be vertical, or it can be inclined relative to the vertical or horizontal direction.

[0083] Furthermore, in this embodiment, the first opening 61b is formed not at the upper end of the first guide passage 61a, but slightly below the upper end. Therefore, foamy additives moving to the upper end of the first opening 61b are less likely to cross it, thus potentially suppressing the formation of foamy additives. Additionally, mist-like additives are easily transported downstream along the flow of compressed air. Alternatively, the first opening 61b may be formed at the upper end of the first guide passage 61a.

[0084] The second guide section 62 moves the floating additive discharged from the first guide section 61 while further adjusting the state of the floating additive by restricting its path. Specifically, the second guide section 62 has a second guide passage 62a and a second opening 62b.

[0085] The second guide passage 62a extends in the vertical direction. However, the case where the second guide passage 62a extends in the vertical direction is only one example; for example, its length in the radial and vertical directions may be the same. A space is formed in the second guide passage 62a for the floating additive discharged from the first guide portion 61 to flow.

[0086] The second opening 62b is for discharging the floating additive flowing along the second guide passage 62a. The second opening 62b is located below the first opening 61b. That is, when moving from the first guide 61 to the second guide 62, the direction of movement of the floating additive changes. Therefore, there is a possibility that large bubble-like additives cannot cope with the change in direction of movement and may become stuck and liquefied.

[0087] The second opening 62b is axially parallel to the vertical direction, discharging the floating additive downwards. Since the liquid surface of the additive exists below the second opening 62b, the liquefied additive can return to the retention section 93. Furthermore, the second opening 62b can also discharge the floating additive in other directions (e.g., radially outwards).

[0088] The third guide section 63 moves the floating additive discharged from the second guide section 62 while further adjusting the state of the floating additive by restricting its path. Furthermore, the first guide section 61 and the second guide section 62 suppress the foamy additive to a certain extent, thus the third guide section 63 can be omitted. The third guide section 63 has a third guide passage 63a and a third opening 63b.

[0089] The third guide passage 63a extends in the vertical direction. Specifically, a second cylindrical member 57 is disposed outside the first cylindrical member 56. The third guide passage 63a is formed by the inner circumferential surface of the second cylindrical member 57 and the outer circumferential surface of the first cylindrical member 56. Furthermore, a second inflow hole 57a for allowing additive to flow is formed at the lower part of the second cylindrical member 57. The second inflow hole 57a is a hole for allowing additive to flow from the first container portion 51 to the second container portion 52. Furthermore, the third guide passage 63a extends in the vertical direction; for example, its length in both the radial and vertical directions may be equal. A space is formed in the third guide passage 63a for the flow of floating additive discharged from the second guide portion 62.

[0090] The third opening 63b is an opening for discharging the floating additive flowing along the third guide passage 63a. The third opening 63b is located above the second opening 62b. That is, as the floating additive moves from the second guide section 62 to the third guide section 63, the direction of movement changes; therefore, there is a possibility that large, bubble-like additives may become stagnant and liquefy due to the change in direction of movement. Furthermore, since the liquid surface of the additive is below the third opening 63b, the liquefied additive can be returned to the retention section 93.

[0091] The axial direction of the third opening 63b is approximately parallel to the vertical direction, allowing the floated additive to be discharged upwards. Additionally, the third opening 63b can also discharge the floated additive in other directions (e.g., radially outwards).

[0092] The floating additive discharged from the third opening 63b fills the space above the liquid surface of the retention section 93. In conventional structures, it is difficult to suppress the size and generation of foamy additives. As a result, there is a possibility that foamy additives fill the space, making it impossible to fully discharge the mist-like additives. In contrast, in this embodiment, since the size and generation of foamy additives are suppressed by the first guide section 61, the second guide section 62, and the third guide section 63, it is difficult for foamy additives to be generated in the space above the liquid surface of the retention section 93. As a result, the mist-like additives can be properly guided to the discharge section 55. Furthermore, the third guide section 63 is not a necessary structural element and can be omitted.

[0093] Next, we will explain matters related to the liquid level of the additive.

[0094] As the additive is supplied to the first spinning pipe 76, it is consumed. Therefore, the operator needs to replenish the additive. Here, when the additive level becomes lower than the first bottom 51a, the additive level is above the nozzle 60, so compressed air is injected into the additive to generate a floating additive. In particular, in this embodiment, the cross-sectional area of ​​the effective volume portion of the second container 52 is smaller than the cross-sectional area of ​​the effective volume portion of the first container 51. Therefore, compared to the case where the cross-sectional area of ​​the effective volume portion is constant throughout (compared to, for example, the case of a cylindrical container with a constant diameter), the addition unit 90 can continue to operate with a small amount of additive.

[0095] Furthermore, if the additive surface is below the injection hole 60c, compressed air will no longer be injected into the additive, thus preventing the supply of additive to the first spinning pipe 76. Moreover, even if the additive surface is the same as or slightly above the injection hole 60c, sufficient floating additive cannot be generated. Therefore, practically, it is preferable to begin notification or preparation for replenishment when the additive surface reaches the first bottom 51a. On the other hand, if the additive surface is above the third opening 63b, floating additive cannot be discharged from the third opening 63b. Therefore, it is preferable that the additive surface is above the first bottom 51a and below the third opening 63b. Hereinafter, the height corresponding to the upper limit of the additive surface will be referred to as the upper limit surface, and the height corresponding to the lower limit of the additive surface will be referred to as the lower limit surface.

[0096] As a structure for detecting the liquid level of additives, the additive section 90 includes a float 66, a limiting member 67, an upper detection section (detection section) 68, and a lower detection section (detection section) 69.

[0097] The float 66 is made of a material with a specific gravity greater than that of the additive. The float 66 is positioned within the area covered by the limiting member 67 used to suppress horizontal movement. The upper detection unit 68 is positioned at a height that contacts the upper end of the float 66 when the additive reaches or is near the upper limit liquid level. The upper detection unit 68 is a contact sensor capable of detecting contact with the float 66. The lower detection unit 69 is positioned at a height that contacts the lower end of the float 66 when the additive reaches or is near the lower limit liquid level. The float 66 moves up and down between the upper detection unit 68 and the lower detection unit 69 in the vertical direction, depending on the liquid level of the additive. The lower detection unit 69 is a contact sensor capable of detecting contact with the float 66. The case where both the upper and lower detection units 68 are contact sensors is one example; at least one of them may be a sensor of other types. Other types of sensors may include, for example, optical distance sensors. Alternatively, a magnet may be positioned at a predetermined location on the float 66, and a reed switch for detecting magnetic force may be provided on the storage section 93 side.

[0098] The detection results from the upper detection unit 68 and the lower detection unit 69 are transmitted to a control board (not shown). If the control board receives a detection result from the upper detection unit 68 or the lower detection unit 69 indicating that contact has been detected, it notifies the operator using sound or light. This allows the operator to be notified of the additive replenishment time and that the amount of additive replenished has become sufficient. Furthermore, the control board can also, in addition to notifying the operator, execute an abnormal stop of the addition unit 90.

[0099] The structure for detecting and reporting the liquid level of the additive is not a necessary structural element and can be omitted. Alternatively, one of the upper detection section 68 and the lower detection section 69 (e.g., the upper detection section 68) can also be omitted. Furthermore, taking the case of using a detection section to detect the upper and lower liquid levels as an example, the detection section can also be placed at other liquid levels, such as those that are just about to be replenished.

[0100] Next, the preferred number and size of the components constituting the adding part 90 will be explained.

[0101] First, the injection orifice 60c will be explained. As the diameter of the injection orifice 60c increases, the bubble size of the foamy additive produced per unit time increases. As the number of injection orifices 60c increases, the amount of foamy additive produced per unit time increases. However, if the diameter of the injection orifice 60c is too small or the number is too small, the amount of floated additive produced per unit time decreases. Therefore, the diameter and number of injection orifices 60c are preferably controlled within an appropriate range. Specifically, the diameter of the injection orifice 60c is preferably 0.5 mm or more and 1 mm or less. Furthermore, the number of injection orifices 60c formed is preferably 4 or more and 12 or less.

[0102] Next, the first inlet hole 56a will be explained. The diameter and number of the first inlet holes 56a affect the amount of additive flowing into the first guide section 61 per unit time. If the amount of additive flowing into the first inlet hole 56a is too small, the generation of floating additive is likely to decrease. If the amount of additive flowing into the first inlet hole 56a is too large, there is a possibility that the generated floating additive will come into contact with the additive in the flowing liquid and be absorbed. Therefore, the diameter and number of the first inlet holes 56a are preferably controlled within an appropriate range. Specifically, the diameter of the first inlet hole 56a is preferably 0.5 mm or more and 3 mm or less. In addition, the number of first inlet holes 56a is preferably 2 or more and 8 or less.

[0103] Next, the first guiding passage 61a will be described. When the cross-sectional area of ​​the first guiding passage 61a is large, the amount of floatable additive that can pass through per unit time increases. On the other hand, the bubble size of the bubbly additive tends to increase, but liquefaction of the additive becomes difficult. Therefore, the cross-sectional area of ​​the first guiding passage 61a is preferably controlled within an appropriate range. Specifically, the cross-sectional area of ​​the first guiding passage 61a is preferably 100 mm. 2 The above 3000mm 2 the following.

[0104] Next, the external check valve 55b will be described. When the cross-sectional area of ​​the flow path of the external check valve 55b is large, the amount of atomized additive that can pass through per unit time increases; on the other hand, it becomes difficult for the additive to liquefy. Therefore, the cross-sectional area of ​​the flow path of the external check valve 55b is preferably controlled within an appropriate range. Specifically, the cross-sectional area of ​​the flow path of the external check valve 55b is preferably 40 mm. 2 Above 1000mm 2 the following.

[0105] As described above, the spinning machine 1 of this embodiment includes multiple spinning units 7, a first spinning pipe 76, and an additive unit 90. The spinning units 7 generate and wind yarn. Compressed air flows toward the spinning units 7 in the first spinning pipe 76. The additive unit 90 generates additive air containing additives and supplies the additive air to the first spinning pipe 76. The additive unit 90 includes a retention section 93, a nozzle 60, a first guide section 61, a second guide section 62, and a discharge section 55. The retention section 93 retains liquid additives. An injection hole 60c is formed in the nozzle 60. By supplying compressed air to the additives retained in the retention section 93 through the injection hole 60c, a floating additive, which is a bubble or mist-like additive, is generated. The first guide section 61 extends vertically, at least covering the injection hole 60c, forming a space for the floating additives generated by the nozzle 60 to flow. The floating additives are discharged from a first opening 61b located above the injection hole 60c. The second guide section 62 is formed with a space for the flow of the floating additive discharged from the first opening 61b, and the floating additive is discharged from the second opening 62b, which is located below the first opening 61b. The discharge section 55 discharges the mist-like additive generated in the retention section 93 to the outside of the retention section 93.

[0106] By using the first guide portion 61 and the second guide portion 62 to restrict the passage of the floating additive, the discharge of the foam-like additive can be suppressed, and the expansion of the bubble size can be inhibited. As a result, the transport of the mist-like additive is less likely to be obstructed.

[0107] In the spinning machine 1 of this embodiment, the additive section 90 includes a third guide section 63, which forms a space for the floating additive discharged from the second opening 62b to flow, and the floating additive is discharged from the third opening 63b, which is located above the second opening 62b.

[0108] This can further suppress the expansion of bubble size in foamy additives.

[0109] In the spinning machine 1 of this embodiment, the feeding unit 90 includes an inlet passage 54a and an internal check valve 54b. The inlet passage 54a is movable integrally with the accumulator 93, allowing compressed air to flow toward the nozzle 60. The internal check valve 54b is disposed in the inlet passage 54a, allowing fluid toward the nozzle 60 to pass through, and inhibiting the passage of fluid from the nozzle 60 toward the inlet passage 54a.

[0110] Therefore, it is possible to suppress the flow of additives from the addition section 90 relative to the compressed air supply side. In addition, since the inlet passage 54a and the internal check valve 54b move integrally with the accumulator 93, backflow of fluid can be suppressed even during maintenance or other operations such as temporarily changing the position of the accumulator 93.

[0111] In the spinning machine 1 of this embodiment, the injection holes 60c are formed in an upward orientation to supply compressed air. The diameter of the injection holes 60c is 0.5 mm or more and 1 mm or less. The number of injection holes 60c is 4 or more and 12 or less.

[0112] By supplying compressed air upwards, the floating additive readily flows toward the first opening 61b, which is located above the injection orifice 60c. The diameter and number of injection orifices 60c affect the state of the floating additive produced by the nozzle 60 (e.g., the size and amount of bubbles), and by setting them within the aforementioned range, an appropriate state can be achieved.

[0113] In the spinning machine 1 of this embodiment, a first inflow hole 56a is formed in the first guide portion 61 to allow the additive to flow into the first guide portion 61. The diameter of the first inflow hole 56a is 0.5 mm or more and 3 mm or less. The number of first inflow holes 56a formed is 2 or more and 8 or less.

[0114] The diameter and number of the first inlet holes 56a affect the amount of additive flowing into the first guide 61. By setting it to the above range, an appropriate amount of additive can flow in.

[0115] In the spinning machine 1 of this embodiment, the storage section 93 includes a first bottom 51a and a second bottom 52a located below the first bottom 51a. Viewed from above, the nozzle 60 and the first guide section 61 overlap with at least a portion of the second bottom 52a. Regarding the second container section 52 formed in the vertical direction between the first bottom 51a and the second bottom 52a, the cross-sectional area of ​​its effective volume portion when cut with a plane perpendicular to the vertical direction is smaller than the cross-sectional area of ​​the first container section 51 formed above the first bottom 51a. The injection hole 60c is located below the first bottom 51a.

[0116] Therefore, when the water level of the additive is lower than the first bottom 51a, only a relatively small amount of additive remains, and the addition section 90 can generate added air.

[0117] In the spinning machine 1 of this embodiment, the flow path cross-sectional area of ​​the first guide section 61 is 100 mm². 2 The above 3000mm 2 the following.

[0118] The flow path cross-sectional area of ​​the first guide section 61 affects the ease of liquefaction of the floating additive and the bubble size, etc. By setting it to the above range, an appropriate state can be achieved.

[0119] In the spinning machine 1 of this embodiment, the retention section 93 includes a float 66 and a detection section (upper detection section 68 and lower detection section 69). The float 66 moves up and down according to the liquid level of the additive. The detection section detects the vertical position of the float 66.

[0120] This allows for the detection of the remaining amount of additives.

[0121] In the spinning machine 1 of this embodiment, the discharge section 55 includes a discharge passage 55a and an external check valve 55b. The discharge passage 55a is movable integrally with the retention section 93, allowing the flow of atomized additive from the discharge section 55 toward the first spinning pipe 76. The external check valve 55b is disposed in the discharge passage 55a to allow fluid toward the first spinning pipe 76 to pass through, and to inhibit the passage of fluid from the first spinning pipe 76 toward the discharge section 55.

[0122] This prevents the additive from flowing back from the first spinning pipe 76 toward the addition section 90. Furthermore, since the discharge passage 55a and the external check valve 55b move integrally with the retention section 93, they are easy to handle.

[0123] In the spinning machine 1 of this embodiment, the flow path cross-sectional area of ​​the external check valve 55b is 40 mm². 2 Above 1000mm 2 the following.

[0124] This makes it difficult for liquefaction to occur due to the collision of the mist-like additives.

[0125] The preferred embodiments of the present invention have been described above, but the above structure can be modified as follows: Modifications can be made individually or in any combination.

[0126] In the above embodiment, the spinning machine 1 includes a first spinning pipe 76 for adding air and a second spinning pipe 77 for drying air. Alternatively, the second spinning pipe 77 can be omitted from the spinning machine 1.

[0127] In the above embodiment, compressed air supplied to the first spinning pipe 76 and used in the additive section 90 are generated by a common air supply source 81. Alternatively, this compressed air can be generated by a separate air supply source 81.

[0128] In the above embodiment, the first guide portion 61, the second guide portion 62, and the third guide portion 63 are respectively constituted by a combination of multiple configured cylindrical components. Alternatively, the first guide portion 61, the second guide portion 62, and the third guide portion 63 may be constituted by individual components.

Claims

1. Spinning machine, characterized in that, Possessing: a plurality of spinning units that generate and wind yarns; a pipe that supplies compressed air that flows toward the spinning units; and an adding section that generates and supplies to the pipe additive air that contains an additive, the adding section possesses: a storage section that stores the additive of a liquid; a nozzle that is formed with a jet hole, and that generates a floating additive that is the additive stored in the storage section in a state of being foamy or misty by supplying compressed air to the additive stored in the storage section from the jet hole; a first guide section that extends in a vertical direction, that covers at least the jet hole, that is formed with a space through which the floating additive generated by the nozzle flows, and that discharges the floating additive from a first opening that is positioned upward compared to the jet hole; a second guide section that is formed with a space through which the floating additive discharged from the first opening flows, and that discharges the floating additive from a second opening that is positioned downward compared to the first opening; and a discharge section that discharges the additive in a misty state generated in the storage section to the outside of the storage section.

2. The spinning machine according to claim 1, characterized in that the adding section possesses a third guide section that is formed with a space through which the floating additive discharged from the second opening flows, and that discharges the floating additive from a third opening that is positioned upward compared to the second opening.

3. The spinning machine according to claim 1 or 2, characterized in that the adding section possesses: an introduction passage that moves integrally with the storage section, through which compressed air toward the nozzle flows; and an internal check valve that is disposed in the introduction passage, that passes fluid toward the nozzle, and that suppresses passage of fluid from the nozzle toward the introduction passage.

4. The spinning machine according to any one of claims 1 to 3, characterized in that the jet hole is formed in a direction in which compressed air is supplied upward, a diameter of the jet hole is 0.5 mm or more and 1 mm or less, a number of the jet holes is 4 or more and 12 or less.

5. The spinning machine according to any one of claims 1 to 4, characterized in that an inflow hole through which the additive flows into the first guide section is formed in the first guide section, a diameter of the inflow hole is 0.5 mm or more and 3 mm or less, a number of the inflow holes is 2 or more and 8 or less.

6. The spinning machine according to any one of claims 1 to 5, characterized in that the storage section possesses a first bottom section and a second bottom section that is positioned downward compared to the first bottom section, in a plan view, the nozzle and the first guide section overlap at least a part of the second bottom section, with respect to an effective volume portion of a cross-sectional area of a second container section that is formed between the first bottom section and the second bottom section in a vertical direction, the cross-sectional area is smaller than a cross-sectional area of a first container section that is formed on an upper side of the first bottom section when the effective volume portion is cut by a plane that is perpendicular to the vertical direction, the jet hole is positioned downward compared to the first bottom section. ​ ​ 7. The spinning machine according to any one of claims 1 to 6, characterized in that The flow path cross-sectional area of the first guide portion is 100 mm 2 The above 3000 mm 2 The following.

8. The spinning machine according to any one of claims 1 to 7, characterized in that the reservoir portion is provided with: a float member that moves up and down according to the liquid level of the additive; and a detection portion that detects the position of the float member in the up and down direction.

9. The spinning machine according to any one of claims 1 to 8, characterized in that the discharge portion is provided with: a discharge passage that moves integrally with the reservoir portion, through which the additive in mist form flows from the discharge portion toward the pipe; and an external check valve that is disposed in the discharge passage, passes fluid toward the pipe, and inhibits passage of fluid from the pipe toward the discharge portion.

10. The spinning machine according to claim 9, characterized in that The flow path cross-sectional area of the external check valve is 40 mm 2 Above 1000 mm 2 Below.

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