JP2017002431A - Spinning machine and spinning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning machine and a spinning method which can prevent the excessive feeding of an additive when spinning is restarted, thereby being able to suppress the deterioration of yarn quality.SOLUTION: A spinning machine 1 includes: an air spinning device 7 which produces a yarn Y by spinning operation for twisting a fiber bundle F by using air; a winding device 13 which winds the yarn Y around a bobbing B to form a package P; a feeding device 60 which feeds additive-containing air containing an additive in a fixed amount between a position upstream of an inlet for the fiber bundle F in the air spinning device 7 and an outlet for the yarn Y in the air spinning device 7; and suppressing means 10 which suppresses a change in the proportion of the additive contained in the additive-containing air.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a spinning machine and a spinning method.

  As a conventional spinning machine, for example, the one disclosed in Patent Document 1 is known. The spinning machine described in Patent Document 1 includes an air spinning device that twists a fiber bundle using air, a pneumatic feeding device that pumps air, an air pipe that guides the air pumped by the pneumatic feeding device, and an air pipe. An additive supply device for supplying the additive to the air pipe on the upstream side where the flowing air is branched toward the pneumatic spinning device, and a control device for adjusting the supply amount of the additive by the additive supply device .

JP 2012-97391 A

  In the spinning machine as described above, when the spinning operation of the pneumatic spinning device is stopped due to yarn breakage or the like, the supply of air to the pneumatic spinning device is stopped. At this time, the additive may be agglomerated inside the supply pipe branched from the air pipe and supplying air to the pneumatic spinning device. In this state, when the spinning operation of the pneumatic spinning apparatus is resumed, if the supply of air from the supply pipe is resumed, the additive aggregated in the supply pipe may be supplied to the pneumatic spinning apparatus all at once. If the additive is excessively supplied to the fiber bundle at one time, the twisted state may be changed and the quality of the yarn may be deteriorated.

  An object of the present invention is to provide a spinning machine and a spinning method that can prevent excessive supply of additives at the time of resuming spinning and can suppress deterioration in yarn quality.

  The spinning machine according to the present invention includes an air spinning device that generates yarn by a spinning operation that twists the fiber bundle by air, a winding device that winds the yarn around a bobbin to form a package, and a fiber bundle in the air spinning device. A supply device for supplying additive-containing air containing a predetermined amount of additive between a position upstream from the inlet of the yarn and a yarn outlet in the pneumatic spinning device, and a ratio of the additive contained in the additive-containing air And suppressing means for suppressing the change of.

  Since this spinning machine is provided with a suppressing means for suppressing a change in the ratio of the additive contained in the additive-containing air, for example, when the spinning operation is resumed in the air spinning device, an excessive amount of additive is added. Can be prevented from being supplied. Therefore, in the spinning machine, it is possible to prevent excessive supply of additives at the time of resuming spinning, and to suppress degradation of yarn quality.

  In one embodiment, the supply device has one end connected to the pneumatic spinning device, includes a supply pipe through which the additive-containing air flows, the suppression means is a supply pipe, and the supply pipe is an air spinning device. You may arrange | position so that it may become high in the direction through which additive-containing air distribute | circulates toward an apparatus. According to this configuration, the supply pipe does not have a portion whose height decreases in the direction in which the additive-containing air flows toward the air spinning device. Thereby, for example, when the spinning operation is interrupted, even if the supply of the additive-containing air is stopped and the additive aggregates, the additive flows toward the supply device. Therefore, for example, when the spinning operation is resumed in the pneumatic spinning device, it is possible to prevent an excessive amount of additive from being supplied to the pneumatic spinning device.

  In one embodiment, the supply device has one end connected to the pneumatic spinning device, includes a supply pipe through which the additive-containing air flows, and the suppressing means is a portion that protrudes downward in the middle of the supply pipe The discharge part which is provided in the lowest position and can discharge | emit an additive may be sufficient. According to this configuration, when the spinning operation is interrupted, even if the supply of the additive-containing air is stopped and the additive aggregates, the additive is discharged from the discharge portion. Therefore, for example, when the spinning operation is resumed in the pneumatic spinning device, it is possible to prevent an excessive amount of additive from being supplied to the pneumatic spinning device.

  In one embodiment, the spinning machine includes a plurality of spinning units each having an air spinning device, and the supply device extends along the arrangement direction of the plurality of spinning units and is connected to each pneumatic spinning device. Air pipes through which additive-containing air supplied to each of the pipes passes, and the air pipes are arranged below the air spinning device in the height direction of the spinning unit, and the suppression means includes air pipes. May be included. According to this structure, it can suppress that the aggregated additive is supplied with respect to an air spinning apparatus from air piping.

  In one embodiment, the supply pipe may be disposed below the pneumatic spinning device in the height direction. According to this structure, it can suppress further that the aggregated additive is supplied with respect to an air spinning apparatus from supply piping.

  In one embodiment, the spinning machine may include a control device that controls the operation of the supply device.

  In one embodiment, the suppression means is a control device that controls the operation of the supply device, and the control device temporarily interrupts the spinning operation in an operating state in which the spinning operation should be performed continuously by the pneumatic spinning device. The additive-containing air may be supplied from the supply device during at least a part of the interruption. Thus, it is possible to suppress the aggregation of the additive by supplying the additive-containing air from the supply device during at least a part of the period during which the spinning operation is interrupted. Therefore, for example, when the spinning operation is resumed, it is possible to prevent an excessive amount of additive from being supplied to the fiber bundle.

  In one embodiment, the control device supplies the additive-containing air from the supply device over a period during which the spinning operation is performed by the pneumatic spinning device, during the suspension of the spinning operation, and during the spinning operation after the suspension. May be continued. Thus, it can suppress further that an additive aggregates by continuing supply of additive-containing air.

  In one embodiment, the spinning machine includes a yarn joining device that performs a yarn joining operation to join the yarn from the pneumatic spinning device and the yarn from the winding device when the yarn is cut. The additive-containing air may be supplied from the supply device during at least a part of the yarn joining operation by the joining device. In this spinning machine, it is possible to suppress the aggregation of the additive by supplying the additive-containing air even during at least a part of the period during the yarn splicing operation. Therefore, for example, when the spinning operation is resumed, it is possible to prevent an excessive amount of additive from being supplied to the fiber bundle.

  In one embodiment, the spinning machine includes a draft device that drafts the fiber bundle, and the control device stops the operation of the draft device when the spinning operation is interrupted, and from the supply device during at least a part of the period during the interruption. Additive-containing air may be supplied. Usually, when the operation of the draft device is stopped, the supply of air is stopped with the stop of the spinning operation. In this spinning machine, it is possible to suppress the aggregation of the additive by supplying the additive-containing air even during at least a part of the period when the operation of the draft device is stopped. Therefore, for example, when the spinning operation is resumed, it is possible to prevent an excessive amount of additive from being supplied to the fiber bundle.

  In one embodiment, the supply device supplies the additive-containing air to a portion where the spinning operation is performed in the pneumatic spinning device, and the pneumatic spinning device performs the additive spinning operation that twists the fiber bundle with the additive-containing air. Yarn may be generated. Thereby, an additive can be efficiently provided with respect to a fiber bundle.

  In one embodiment, the pneumatic spinning device includes a spinning chamber in which a fiber bundle is swirled by a swirling flow of additive-containing air, and a nozzle through which additive-containing air injected into the spinning chamber passes to generate swirling flow. , A hollow guide shaft body having a passage for guiding the fiber bundle swirled in the spinning chamber to the outside, a spinning position where the hollow guide shaft body is positioned during the additive spinning operation, and spinning from the spinning position. And a moving unit that moves the hollow guide shaft body to a separated position far from the chamber, and the control device supplies at least a part of the period when the hollow guide shaft body is located at the separated position. The additive-containing air may be supplied from the apparatus to the pneumatic spinning apparatus. Usually, when the hollow guide shaft body is located at the separated position, the spinning operation is not performed, so that the supply of air to the pneumatic spinning device is stopped. In this spinning machine, even when the hollow guide shaft body is located at the separated position, the additive-containing air is supplied during at least a part of the period, whereby aggregation of the additive can be suppressed. Therefore, for example, when the spinning operation is resumed, it is possible to prevent an excessive amount of additive from being supplied to the pneumatic spinning device.

  In one embodiment, the spinning machine includes a stop unit that stops the supply of the additive-containing air from the supply unit, and the control unit receives the stop signal from the stop unit and receives the additive-containing air from the supply unit. May be stopped. According to this configuration, the supply of the additive-containing air can be stopped by operating the stop unit.

  In one embodiment, the supply device supplies air containing no additive to the pneumatic spinning device, and the control device may stop supplying air from the supply device to the pneumatic spinning device when the spinning operation is interrupted. Good. According to this configuration, since the air is not supplied when the spinning operation is not performed, the consumption of air can be suppressed.

  In one embodiment, the spinning machine includes an operation unit that terminates the spinning operation in the pneumatic spinning device, and the control device stops supplying the additive-containing air from the supply device when receiving an end signal from the operation unit. In addition, the air supply may be started and the air supply may be stopped after the air is supplied for a predetermined time. According to this configuration, since the air is supplied for a predetermined time after the supply of the additive-containing air is stopped, the additive can be removed from the pneumatic spinning device even if the additive is attached to the pneumatic spinning device. Therefore, it is possible to suppress the additive from adhering to the fiber bundle when the spinning operation is subsequently performed in the pneumatic spinning device.

  In one embodiment, the control device performs the spinning operation in the pneumatic spinning device at a time other than the case where the spinning operation is resumed from the state in which the spinning operation is interrupted in the operation state in which the spinning operation should be continuously performed by the pneumatic spinning device. Before starting the process, the additive-containing air may be supplied from the supply device for a predetermined time. As a result, the additive-containing air is sufficiently imparted to the fiber bundle, so that the spinning operation can be performed well immediately after the start of the spinning operation.

  The spinning method according to the present invention includes an air spinning device that generates a yarn by a spinning operation that twists the fiber bundle by air, a position upstream from the inlet of the fiber bundle in the air spinning device, and the yarn spinning in the air spinning device. A spinning method implemented in a spinning machine comprising a supply device for supplying additive-containing air containing a predetermined amount of additive to and from an outlet, and the spinning operation should be continuously performed by the pneumatic spinning device When the spinning operation is temporarily interrupted in the operating state, the additive-containing air is supplied from the supply device during at least a part of the suspension.

  In this spinning method, aggregation of the additive can be suppressed, and for example, when the spinning operation is resumed, it is possible to prevent an excessive amount of additive from being supplied to the fiber bundle.

  According to the present invention, it is possible to prevent excessive supply of additives at the time of resuming spinning, and to suppress deterioration in yarn quality.

It is a front view which shows the spinning machine which concerns on one Embodiment. It is a side view of the spinning unit of the spinning machine of FIG. It is sectional drawing of the pneumatic spinning apparatus in a spinning position. It is sectional drawing of the pneumatic spinning apparatus in a separation position. It is a block diagram which shows the structure of a spinning machine. It is a figure which shows the structure of the air distribution apparatus and additive supply apparatus of the spinning machine which concern on 1st Embodiment. It is a figure which shows the structure of the air distribution apparatus and additive supply apparatus of a spinning machine which concern on 2nd Embodiment. It is a figure which shows the 1st distribution pipe which concerns on the modification of 2nd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  As shown in FIG. 1, the spinning machine 1 includes a plurality of spinning units 2, a yarn splicing cart 3, a doffing cart (not shown), a first end frame 4, and a second end frame 5. I have. The plurality of spinning units 2 are arranged in a line. Each spinning unit 2 generates the yarn Y and winds it on the package P. When the yarn Y is cut by a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining cart 3 performs a yarn joining operation with the spinning unit 2. The doffing cart doffs the package P and supplies a new bobbin B to the spinning unit 2 when the package P is full in a spinning unit 2.

  The first end frame 4 accommodates a collection device for collecting fiber waste and yarn waste generated in the spinning unit 2. The second end frame 5 includes an air supply unit (regulator 61a described later) that adjusts the air pressure of the compressed air (air) supplied to the spinning machine 1 and supplies air to each part of the spinning machine 1, and the spinning unit 2. A drive motor and the like for supplying power to each part are accommodated. The second end frame 5 is provided with a machine base control device (control device, suppression means) 100, a display screen 102, and input keys 104. The machine control device 100 centrally manages and controls each part of the spinning machine 1. The display screen 102 can display information related to the setting contents and / or status of the spinning unit 2. When the operator performs an appropriate operation using the input keys 104, the setting operation of the spinning unit 2 can be performed.

  As shown in FIGS. 1 and 2, each spinning unit 2 includes a draft device 6, an air spinning device 7, a yarn monitoring device 8, a tension sensor 9, in order from the upstream side in the traveling direction of the yarn Y. A yarn storage device 11, a waxing device 12, and a winding device 13 are provided. A unit controller (control device, suppression means) 10 is provided for each predetermined number of spinning units 2 and controls the operation of the spinning units 2.

  The draft device 6 drafts a sliver (fiber bundle) S. The draft device 6 includes a back roller pair 14, a third roller pair 15, a middle roller pair 16, and a front roller pair 17 in order from the upstream side in the traveling direction of the sliver S. Each roller pair 14, 15, 16 and 17 has a bottom roller and a top roller. The bottom roller is rotationally driven by a drive motor provided in the second end frame 5 or a drive motor provided in each spinning unit 2. An apron belt 18 a is provided for the bottom roller of the middle roller pair 16. An apron belt 18 b is provided for the top roller of the middle roller pair 16.

  The air spinning device 7 generates a yarn Y by twisting the fiber bundle F drafted by the draft device 6 by a swirling air flow.

  The yarn monitoring device 8 monitors information on the traveling yarn Y between the pneumatic spinning device 7 and the yarn storage device 11, and detects the presence or absence of a yarn defect based on the monitored information. When the yarn monitoring device 8 detects a yarn defect, the yarn monitoring device 8 transmits a yarn defect detection signal to the unit controller 10. The yarn monitoring device 8 detects, for example, an abnormal thickness of the yarn Y and / or a foreign matter contained in the yarn Y as the yarn defect. The yarn monitoring device 8 also detects yarn breakage and the like. The tension sensor 9 measures the tension of the traveling yarn Y between the pneumatic spinning device 7 and the yarn storage device 11, and transmits a tension measurement signal to the unit controller 10. When the unit controller 10 determines that there is an abnormality based on the detection result of the yarn monitoring device 8 and / or the tension sensor 9, the yarn Y is cut in the spinning unit 2. Specifically, the supply of air to the pneumatic spinning device 7 is stopped and the generation of the yarn Y is interrupted, whereby the yarn Y is cut. Alternatively, the yarn Y may be cut by a cutter provided separately.

  The waxing device 12 applies wax to the yarn Y between the yarn storage device 11 and the winding device 13.

  The yarn accumulating device 11 takes the slack of the yarn Y between the pneumatic spinning device 7 and the winding device 13. The yarn storage device 11 has a function of stably pulling out the yarn Y from the pneumatic spinning device 7, and retains the yarn Y sent out from the pneumatic spinning device 7 at the time of yarn joining operation by the yarn joining cart 3, etc. And a function of preventing the fluctuation in the tension of the yarn Y on the downstream side of the yarn accumulating device 11 from being transmitted to the pneumatic spinning device 7.

  The winding device 13 forms the package P by winding the yarn Y around the bobbin B. The winding device 13 includes a cradle arm 21, a winding drum 22, and a traverse guide 23. The cradle arm 21 supports the bobbin B so as to be rotatable. The cradle arm 21 is swingably supported by a support shaft 24 and brings the surface of the bobbin B or the surface of the package P into contact with the surface of the winding drum 22 with an appropriate pressure. A drive motor (not shown) provided on the second end frame 5 drives the winding drums 22 of the plurality of spinning units 2 all at once. Thereby, in each spinning unit 2, the bobbin B or the package P is rotated in the winding direction. The traverse guide 23 of each spinning unit 2 is provided on a shaft 25 shared by a plurality of spinning units 2. When the drive motor of the second end frame 5 reciprocates the shaft 25 in the direction of the rotation axis of the winding drum 22, the traverse guide 23 traverses the yarn Y with a predetermined width with respect to the rotating bobbin B or package P.

  When the yarn Y is cut in a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining cart 3 travels to the spinning unit 2 and performs a yarn joining operation. The yarn joining cart 3 has a yarn joining device 26, a suction pipe 27, and a suction mouth 28. The suction pipe 27 is rotatably supported by the support shaft 31, captures the yarn Y from the pneumatic spinning device 7, and guides it to the yarn joining device 26. The suction mouse 28 is rotatably supported by the support shaft 32, captures the yarn Y from the winding device 13, and guides it to the yarn joining device 26. The yarn joining device 26 performs yarn joining between the guided yarns Y. The yarn joining device 26 is a splicer that uses compressed air or a knotter that mechanically joins the yarn Y.

  When the yarn joining cart 3 performs the yarn joining operation, the package P is rotated (reversely rotated) in the anti-winding direction. At this time, the cradle arm 21 is moved by an air cylinder (not shown) so that the package P is separated from the winding drum 22, and the package P is moved by a reverse rotation roller (not shown) provided on the yarn splicing carriage 3. It is rotated backward.

  The above-described pneumatic spinning device 7 will be described in more detail. As shown in FIGS. 3 and 4, the pneumatic spinning device 7 includes a nozzle block 40 and a hollow guide shaft body 50.

  The nozzle block 40 has a fiber guide part 41 and a swirl flow generating part 42. The fiber guide portion 41 is provided with a guide hole 41 a for guiding the fiber bundle F supplied from the draft device 6. The swirl flow generating unit 42 is provided with a spinning chamber 43 and a plurality of first nozzles 44. In the spinning chamber 43, a tip 45a of the needle 45 held by the fiber guide 41 is located.

  In the spinning chamber 43, the rear ends of the fibers of the fiber bundle F introduced through the guide holes 41a are swirled by a swirling flow of air (mist air or dry air described later). In order to generate a swirl flow in the spinning chamber 43, air is injected from the plurality of first nozzles 44 into the spinning chamber 43. The swirl flow generating portion 42 is provided with an opening 42 a so as to be continuous with the spinning chamber 43.

  An end 50a on the upstream side of the hollow guide shaft body 50 is formed in a truncated cone shape that tapers toward the upstream side, and is disposed in the opening 42a of the swirl flow generating portion 42 with a gap. . A flange-shaped cap 57 is attached to the hollow guide shaft body 50. The hollow guide shaft body 50 is positioned with respect to the spinning chamber 43 by the cap 57 coming into contact with the frame-shaped holder 46 that supports the nozzle block 40. The air injected from the plurality of first nozzles 44 into the spinning chamber 43 passes through a gap formed between the end 50a of the hollow guide shaft body 50 and the opening 42a of the swirl flow generating portion 42, and the holder 46 Flows into the decompression chamber 47 provided to the yarn, and is discharged together with the fibers that have not become the yarn Y.

  The hollow guide shaft body 50 is provided with a passage 51 and a plurality of second nozzles 54. The passage 51 guides the yarn Y (fiber swirled in the spinning chamber 43) to the outside (downstream in the yarn traveling direction). For example, when the yarn Y is newly generated after the spinning operation is interrupted, air is injected from the plurality of second nozzles 54 into the passage 51.

  Air is supplied to each second nozzle 54 via an air supply path 56 and an air flow path 55. The air supply path 56 is connected to the downstream end portion 50 b of the hollow guide shaft body 50. The air channel 55 is provided in the hollow guide shaft body 50 so as to surround the passage 51 when viewed from the center line direction of the hollow guide shaft body 50.

  The pneumatic spinning device 7 can advance and retract the hollow guide shaft body 50 with respect to the spinning chamber 43. As shown in FIG. 5, the pneumatic spinning device 7 moves the hollow guide shaft body 50 to a spinning position where the hollow guide shaft body 50 is located during a spinning operation and to a separated position farther from the spinning chamber 43 than the spinning position. An actuator (moving unit) 58 is provided. The spinning position is the position of the hollow guide shaft body 50 shown in FIG. 3 (the position indicated by the broken line in FIG. 4). The separation position is a position of the hollow guide shaft body 50 shown in FIG. 4 and a position outside the decompression chamber 47. The actuator 58 is, for example, an air cylinder or a stepping motor. The operation of the actuator 58 is controlled by the unit controller 10.

  In the pneumatic spinning device 7, for example, when the yarn Y is cut in the spinning unit 2 and the yarn joining operation is performed on the yarn joining cart 3, the spinning operation is once stopped and then the spinning operation is performed again. The hollow guide shaft 50 is retracted with respect to the spinning chamber 43 by the time when the spinning is started.

  As shown in FIG. 6, the spinning machine 1 further includes an air distribution device (supply device) 60 and an additive supply device (supply device) 70. The air distribution device 60 includes a first air pipe 62, a first distribution pipe 63, a second air pipe 64, and a second distribution pipe 65.

  In the factory where the spinning machine 1 is installed, a pneumatic feeding device 61 is provided. The pneumatic feeder 61 is, for example, an electric compressor that pressurizes and sends out air by driving an electric motor. The pressure of the air pumped by the pneumatic feeder 61 is adjusted by the regulator 61a.

  The first air pipe 62 guides mist air (additive-containing air). The mist air is air in which an additive is mixed into the air that is supplied by the pneumatic feeder 61 and supplied to the spinning machine 1 through the air pipe 67. The first air pipes 62 extend in parallel or substantially in parallel along the arrangement direction of the spinning units 2. The first air pipe 62 is located above the air spinning device 7.

  The first distribution pipe 63 guides the mist air flowing through the first air pipe 62 to each air spinning device 7. One end of the first distribution pipe 63 is connected to the pneumatic spinning device 7. The other end of the first distribution pipe 63 is connected to the middle part of the first air pipe 62. The flow rate of mist air guided to the pneumatic spinning device 7 by the first distribution pipe 63 is adjusted by an opening / closing valve 63 a provided in the first distribution pipe 63. The unit controller 10 controls the operation of the opening / closing valve 63a. In the pneumatic spinning device 7 supplied with mist air, a mist spinning operation (additive spinning operation) using mist air is performed.

  The second air pipe 64 guides dry air (air) that does not contain the additive pumped by the pneumatic feeder 61. The second air pipes 64 extend in parallel or substantially in parallel along the arrangement direction of the spinning units 2. The second air pipe 64 is positioned above the air spinning device 7. The second air pipe 64 may be provided so as to be positioned below the pneumatic spinning device 7 or may be provided at the same height as the pneumatic spinning device 7.

  The second distribution pipe 65 guides the dry air flowing through the second air pipe 64 to each air spinning device 7. One end of the second distribution pipe 65 is connected to the pneumatic spinning device 7. The other end of the second distribution pipe 65 is connected to a midway part of the second air pipe 64. The flow rate of the dry air guided to the pneumatic spinning device 7 by the second distribution pipe 65 is adjusted by an open / close valve 65 a provided in the second distribution pipe 65. The unit controller 10 controls the operation of the opening / closing valve 65a. In the air spinning device 7 supplied with the dry air, a dry spinning operation using the dry air is performed.

  In the spinning machine 1, for example, when an operator operates the input key 104, it can be selected whether to perform a mist spinning operation or a dry spinning operation. Until one spinning unit 2 completes winding of one package P, the yarn Y generated by spinning the fiber bundle F by the selected mist spinning operation or dry spinning operation is wound. When the mist spinning operation is selected, basically, mist air is continuously (continuously) injected from the first nozzle 44 until winding of one package P is completed. However, when a stop unit 106 to be described later is operated, the injection of mist air in the corresponding air spinning device 7 is temporarily interrupted.

  As shown in FIG. 6, the additive supply device 70 includes a branch pipe 71, a pressure adjustment device 72, an additive storage tank 73, and an additive supply pipe 74.

  The branch pipe 71 branches the air flowing through the first air pipe 62 and guides it to the additive storage tank 73. One end of the branch pipe 71 is connected to the additive storage tank 73. The other end of the branch pipe 71 is connected to the middle part of the first air pipe 62.

  The pressure adjusting device 72 pressurizes the air guided to the additive storage tank 73 to adjust the internal pressure of the additive storage tank 73. The pressure adjusting device 72 is, for example, a pressure increasing valve that pressurizes air by driving a sliding piston. Alternatively, the pressure adjusting device 72 may be an electric compressor that pressurizes air by driving an electric motor. The pressure adjusting device 72 is connected to the machine base control device 100 via an electric line. The machine base control device 100 controls the pressure adjusting device 72 by transmitting a control signal to the pressure adjusting device 72.

  The additive storage tank 73 is a container for storing the additive. In the present embodiment, the additive is, for example, a lubricant. The additive is not limited to a lubricant, and various additives (drugs) and / or pneumatic spinning capable of imparting at least one of antibacterial, deodorant, deodorant, and unwinding (wax) functions to the yarn Y. An additive (medicine) that prevents or eliminates the accumulation of oil in the apparatus 7 can be used. The additive storage tank 73 includes a storage amount detection unit 73a that detects the storage amount of the additive.

  The additive supply pipe 74 guides the additive stored in the additive storage tank 73 to the first air pipe 62. One end of the additive supply pipe 74 is connected to the additive storage tank 73. The other end of the additive supply pipe 74 is connected to the upstream side of the location where the air flowing through the first air pipe 62 is branched toward the respective air spinning devices 7.

  The additive supply device 70 sprays the additive stored in the additive storage tank 73 onto the first air pipe 62. The additive supply device 70 adjusts the spray amount of the additive by adjusting the pressure adjusting device 72. The additive supply device 70 is controlled by the machine base control device 100. For example, the machine base control device 100 may control the additive supply device 70 according to the raw material of the sliver S to control the spray amount of the additive.

  The air distributor 60 uses only the first air pipe 62 by opening the valve 66 disposed upstream of the first air pipe 62 and closing the valve 69 disposed upstream of the second air pipe 64. Then, mist air is supplied to the air spinning device 7. The air distributor 60 closes the valve 66 and opens the valve 69 to supply dry air to the air spinning device 7 using only the second air pipe 64. In addition, if it is the structure which can switch supply of each air, the position and / or number which provide each valve | bulb are not limited to embodiment of illustration.

  The sliver S spun in the spinning machine 1 may include at least one of natural fiber, regenerated fiber, semi-synthetic fiber, and synthetic fiber (for example, polyester fiber, polyamide fiber, polyacrylonitrile fiber). Natural fibers are, for example, seed hair fibers or bast fibers, and specifically cotton, flax and the like. The regenerated fiber is, for example, regenerated cellulose, and specifically, rayon, special rayon (polynosic, HWM rayon), cupra and the like. The semi-synthetic fiber is, for example, a cellulosic fiber, specifically, acetate, triacetate, or the like. Specific examples of the synthetic fiber include polyester, nylon, acrylic, and acrylic.

  As shown in FIG. 5, the spinning machine 1 includes a stop unit 106 and an operation unit 108. The stop unit 106 stops the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7. The stop unit 106 is, for example, a button provided for each spinning unit 2. The stop unit 106 may be provided in the second end frame 5 or the like. The stop unit 106 outputs a stop signal to the unit controller 10 when operated by an operator. When the unit controller 10 receives the stop signal output from the stop unit 106, the unit controller 10 stops the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7. Specifically, the unit controller 10 closes the opening / closing valve 63a.

  The operation unit 108 ends the mist spinning operation in the pneumatic spinning device 7. The operation unit 108 is, for example, a button (icon) displayed on the display screen 102 and is executed as a program. When the operation unit 108 is selected by operating the input key 104, the operation unit 108 outputs an end signal to the unit controller 10. When the unit controller 10 receives the end signal from the operation unit 108, the unit controller 10 stops the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7 and starts the supply of dry air from the second air pipe 64. Specifically, the unit controller 10 closes the opening / closing valve 63a and opens the opening / closing valve 65a. The unit controller 10 closes the open / close valve 65a after supplying dry air to the pneumatic spinning device 7 for a predetermined time (for example, 10 minutes). Thereby, the supply of dry air to the air spinning device 7 is stopped.

  Next, a spinning method using the spinning machine 1 will be described. In the following description, a method for generating the yarn Y using mist air will be described as an example.

  First, the type of raw material of the sliver S is input by the operator using the input key 104. The machine base control device 100 controls the amount of the additive mixed in the additive supply device 70 in accordance with the input raw material type of the sliver S.

  When the start of the spinning operation by the spinning unit 2 is input by the input key 104, the air distributor 60 opens the valve 66 and closes the valve 69 on the basis of an instruction from the machine control device 100, whereby the first air pipe Air is supplied to 62. The additive supply device 70 sprays the additive stored in the additive storage tank 73 onto the first air pipe 62. The unit controller 10 opens the opening / closing valve 63 a provided in the first distribution pipe 63. As a result, mist air is supplied to the air spinning device 7.

  The machine control device 100 instructs the unit controller 10 to start a spinning operation when a predetermined time (for example, 10 minutes) has passed since the supply of mist air to the pneumatic spinning device 7 is started. The unit controller 10 starts a mist spinning operation in the spinning unit 2. Specifically, the unit controller 10 starts the operations of the draft device 6, the yarn storage device 11, and the winding device 13.

  When the mist spinning operation is started, the sliver S is drafted by the draft device 6 and sent to the pneumatic spinning device 7. The yarn Y generated by the air spinning device 7 is stored in the yarn storage device 11 and wound on the package P by the winding device 13.

  When the yarn Y is cut in the spinning unit 2, the unit controller 10 interrupts the mist spinning operation in the spinning unit 2. Specifically, the unit controller 10 stops the operations of the draft device 6 and the winding device 13 when the yarn Y is cut in the spinning unit 2. Further, the unit controller 10 operates the actuator 58 of the pneumatic spinning device 7 to move the hollow guide shaft body 50 to the separated position. When the unit controller 10 outputs a signal indicating the cutting of the yarn Y from the unit controller 10, the machine control device 100 causes the yarn joining cart 3 to perform the yarn joining operation. At this time, the unit controller 10 keeps the open / close valve 63a provided in the first distribution pipe 63 open, and continues the supply of mist air from the first distribution pipe 63 to the pneumatic spinning device 7. The unit controller 10 restarts the mist spinning operation in the spinning unit 2 when the yarn joining operation by the yarn joining cart 3 is completed.

  The unit controller 10 closes the open / close valve 63a provided in the first distribution pipe 63 when the stop unit 106 is operated, for example, when the mist spinning operation by the spinning unit 2 is interrupted. As a result, the supply of mist air to the corresponding pneumatic spinning device 7 is temporarily stopped. The operator can perform maintenance work or the like of the pneumatic spinning device 7 in a state where the injection of mist air from the first nozzle 44 is stopped. After the maintenance work by the operator is completed, the operation of the stop unit 106 is released, and the mist spinning operation in the spinning unit 2 is resumed. Since maintenance work by the operator is performed in a short time, even if the supply of mist air is temporarily stopped, the aggregated additive is supplied to the air spinning device 7 when the mist spinning operation is resumed. Absent. The resumption of the dry spinning operation means that the mist spinning operation is restarted after the mist spinning operation is temporarily interrupted in the operating state in which the air spinning device 7 should continuously perform the mist spinning operation. means. Temporary interruption means that the mist spinning operation is stopped for a short time, for example, by a yarn splicing operation or a maintenance operation while the yarn Y is being generated by the pneumatic spinning device 7 based on a predetermined lot. is there.

  In the spinning machine 1, for example, when it is desired to finish the mist spinning operation and remove an additive that may remain in each pneumatic spinning device 7, dry air is supplied to the pneumatic spinning device 7. You may do it. When the operation unit 108 is selected by operating the input key 104, the air distributor 60 closes the valve 66 and opens the valve 69 based on an instruction from the machine base control device 100. The unit controller 10 closes the open / close valve 63a and opens the open / close valve 65a. As a result, the supply of mist air from the first air pipe 62 to the air spinning device 7 is stopped, and the supply of dry air from the second air pipe 64 to the air spinning device 7 is started. The unit controller 10 closes the open / close valve 65a when a predetermined time has elapsed after the supply of dry air to the pneumatic spinning device 7 is started. As a result, the supply of dry air from the second air pipe 64 to the air spinning device 7 is stopped.

  In the spinning machine 1, when the dry spinning operation is performed, when the dry spinning operation is interrupted in the pneumatic spinning device 7, the unit controller 10 closes the opening / closing valve 65 a provided in the first distribution pipe 63. Then, the supply of dry air from the second air pipe 64 to the pneumatic spinning device 7 is stopped. However, the unit controller 10 does not have to stop the supply of dry air as in the case of the mist spinning operation.

  As described above, in the spinning machine 1 according to this embodiment, the unit controller 10 supplies mist air from the first air pipe 62 to the pneumatic spinning device 7 when the mist spinning operation in the pneumatic spinning device 7 is interrupted. Let it continue. In other words, the unit controller 10 transfers the mist spinning operation from the first air pipe 62 to the pneumatic spinning device 7 during the mist spinning operation in the pneumatic spinning device 7, during the suspension of the mist spinning operation, and during the execution of the mist spinning operation after the suspension. Continue supplying mist air. As described above, by continuously supplying the mist air to the air spinning device 7 even when the mist spinning operation is interrupted, the aggregation of the additive in the first distribution pipe 63 can be suppressed. That is, when the dry spinning operation is resumed in the air spinning device 7, the change in the ratio of the additive contained in the mist air supplied to the air spinning device 7 can be suppressed. That is, the amount of additive contained in the mist air supplied to the air spinning device 7 can be maintained within a certain amount or within a predetermined range. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the air spinning device 7 when the mist spinning operation is resumed. Thereby, the quality of the yarn Y generated by the pneumatic spinning device 7 can be stabilized.

  In the present embodiment, the spinning machine 1 includes a yarn joining cart 3 that performs a yarn joining operation to join the yarn Y from the air spinning device 7 and the yarn Y from the winding device 13 when the yarn Y is cut. ing. The unit controller 10 continues the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7 during the yarn joining operation by the yarn joining cart 3. Normally, during the yarn splicing operation, the supply of air to the pneumatic spinning device 7 is stopped with the stop of the spinning operation. In the spinning machine 1, it is possible to suppress the aggregation of the additive by continuing the supply of mist air even during the yarn splicing operation. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the air spinning device 7 when the mist spinning operation is resumed.

  In the present embodiment, the spinning unit 2 of the spinning machine 1 includes a draft device 6 that drafts the sliver S. When the mist spinning operation is interrupted, the unit controller 10 stops the operation of the draft device 6 and continues the supply of mist air from the first air pipe 62 to the air spinning device 7. Normally, when the operation of the draft device 6 is stopped, the supply of air to the pneumatic spinning device 7 is stopped with the stop of the spinning operation. In the spinning machine 1 of the present embodiment, the supply of mist air is continued even when the operation of the draft device 6 is stopped, so that aggregation of the additive can be suppressed. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the air spinning device 7 when the mist spinning operation is resumed.

  In the present embodiment, the pneumatic spinning device 7 has a nozzle block 40, a hollow guide shaft body 50, a spinning position where the hollow guide shaft body 50 is located during spinning operation, and a position farther from the spinning chamber 43 than the spinning position. And an actuator 58 that moves the hollow guide shaft body 50 to a separated position where the hollow guide shaft body 50 is located when the spinning operation is interrupted. The unit controller 10 continues the supply of mist air from the first air pipe 62 to the air spinning device 7 in a state where the hollow guide shaft body 50 is located at the separation position. Usually, when the hollow guide shaft body 50 is in the separated position, the spinning operation is not performed, so the supply of air to the pneumatic spinning device 7 is stopped. In the spinning machine 1, it is possible to suppress the aggregation of the additive by continuing the supply of the mist air even in a state where the hollow guide shaft body 50 is located at the separation position. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the air spinning device 7 when the mist spinning operation is resumed.

  In the present embodiment, the spinning machine 1 includes a stop unit 106 that stops the supply of mist air from the first air pipe 62 to the air spinning device 7. When the unit controller 10 receives a stop signal from the stop unit 106, the unit controller 10 stops the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7. According to this configuration, the supply of mist air can be stopped by operating the stop unit 106.

  In the present embodiment, the second air pipe 64 of the air distribution device 60 supplies dry air to the air spinning device 7. The pneumatic spinning device 7 generates the yarn Y by a dry spinning operation in which the fiber bundle F is twisted by the dry air supplied from the second air pipe 64. The unit controller 10 stops the operation of the draft device 6 when the dry spinning operation is interrupted, and stops the supply of dry air from the second air pipe 64 to the air spinning device 7. According to this configuration, since dry air is not supplied when the dry spinning operation is not performed, consumption of dry air can be suppressed.

  In the present embodiment, the unit controller 10 removes the mist spinning operation from the first air pipe 62 before starting the mist spinning operation in the air spinning device 7 except when the mist spinning operation is resumed from the state where the mist spinning operation is interrupted. Mist air is supplied to the air spinning device 7 for a predetermined time. As a result, the mist air is sufficiently distributed to the air spinning device 7, so that the mist spinning operation can be favorably performed immediately after the start of the mist spinning operation. For example, when the mist spinning operation is resumed from the state where the mist spinning operation is suspended, for example, when the spinning machine 1 is started up and the mist spinning operation is first started, the mist spinning operation is started from the second spinning operation. When the mist spinning operation is started after switching to the operation, or when the mist spinning operation is started after a predetermined period has elapsed since the previous mist spinning operation was stopped by the operation stop of the spinning unit 2. is there.

  In the present embodiment, the spinning machine 1 includes an operation unit 108 that ends the mist spinning operation in the pneumatic spinning device 7. When the unit controller 10 receives the end signal from the operation unit 108, the unit controller 10 stops the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7, starts the supply of dry air, and supplies the dry air for a predetermined time. Then, the supply of dry air is stopped. According to this configuration, since the dry air is supplied for a predetermined time after the supply of mist air is stopped, the additive can be removed from the pneumatic spinning device 7 even if the additive is attached to the pneumatic spinning device 7. . Therefore, it is possible to prevent the additive from adhering to the fiber bundle F when the dry spinning operation is performed in the pneumatic spinning device 7 thereafter.

  In the embodiment described above, an example in which the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7 is continued when the mist spinning operation in the pneumatic spinning device 7 is interrupted is described as an example. However, the supply of the mist air from the first air pipe 62 to the pneumatic spinning device 7 may be at least a part of the period during which the mist spinning operation is interrupted. For example, the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7 may be intermittent.

  Next, the second embodiment will be described. As shown in FIG. 7, the spinning machine 1A according to the second embodiment includes an air distributor 60A and an additive supply device 70. The additive supply device 70 has the same configuration as that of the first embodiment.

  The air distribution device (supply device) 60A includes a first air pipe (suppression means) 62A, a first distribution pipe (supply pipe, suppression means) 63A, a second air pipe 64, and a second distribution pipe 65. Have. The second air pipe 64 and the second distribution pipe 65 have the same configuration as that of the first embodiment.

  The first air pipe 62A guides the air pumped by the pneumatic feeder 61. The first air pipe 62 </ b> A extends in parallel or substantially in parallel along the arrangement direction of the spinning units 2. The first air pipe 62 </ b> A is disposed in the lower part of the spinning machine 1. Specifically, the first air pipe 62 </ b> A is disposed below the air spinning device 7 in the height direction of the spinning unit 2.

  The first distribution pipe 63 </ b> A guides the air flowing through the first air pipe 62 </ b> A to each pneumatic spinning device 7. One end of the first distribution pipe 63 </ b> A is connected to the pneumatic spinning device 7. The other end of the first distribution pipe 63A is connected to the middle part of the first air pipe 62A. The flow rate of the air guided to the pneumatic spinning device 7 by the first distribution pipe 63A is adjusted by an opening / closing valve 63Aa provided in the first distribution pipe 63A.

  The first distribution pipe 63 </ b> A is disposed below the pneumatic spinning device 7 in the height direction of the spinning unit 2. Specifically, the first distribution pipe 63 </ b> A is disposed below the inlet of the first nozzle 44 of the pneumatic spinning device 7. The first distribution pipe 63 </ b> A is arranged to be higher in the direction in which mist air flows from the first air pipe 62 </ b> A toward the air spinning device 7. That is, the first distribution pipe 63 </ b> A does not have a portion whose height decreases in the direction in which mist air flows from the first air pipe 62 </ b> A toward the air spinning device 7. The first distribution pipe 63 </ b> A is arranged so that the connection portion (one end portion) with the pneumatic spinning device 7 is at the highest position. That is, the first distribution pipe 63A is not provided with a bent portion, and each position increases from the other end connected to the first air pipe 62A toward the one end connected to the air spinning device 7. It is provided as follows.

  As described above, in the spinning machine 1A according to the present embodiment, the first distribution pipe 63A is arranged to be higher in the direction in which mist air flows from the first air pipe 62A toward the air spinning device 7. Yes. According to this configuration, when the mist spinning operation is interrupted, the additive flows toward the first air pipe 62A even if the supply of mist air is stopped and the additive aggregates. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the pneumatic spinning device 7 when the mist spinning operation is resumed in the pneumatic spinning device 7.

  In the present embodiment, the first air pipe 62 </ b> A is disposed below the pneumatic spinning device 7 in the height direction of the spinning unit 2. According to this structure, it can suppress that the aggregated additive is supplied with respect to the air spinning apparatus 7 from 62 A of 1st air piping. The position where the first air pipe 62A is provided is not limited to the position shown in FIG. 7, but may be any other position as long as it is a position between the installation surface (floor) of the spinning machine 1 and the air spinning device 7 in the height direction. But you can.

  In the present embodiment, the first distribution pipe 63 </ b> A is disposed below the pneumatic spinning device 7 in the height direction of the spinning unit 2. According to this structure, it can further suppress that the aggregated additive is supplied with respect to the air spinning apparatus 7 from 63 A of 1st distribution pipes.

  In the above embodiment, the first distribution pipe 63A has been described as an example in which each position increases from the other end connected to the first air pipe 62A toward one end connected to the air spinning device 7. However, as shown in FIG. 8A, the first distribution pipe 63B may have a flat portion. Even in this configuration, when the mist spinning operation is interrupted, the additive flows toward the first air pipe 62A even if the supply of mist air is stopped and the additive aggregates.

  As shown in FIG. 8B, a discharge portion 63E that can discharge the additive may be provided at the lowest position of a portion 63D that protrudes downward in the middle of the first distribution pipe 63C. According to this configuration, when the mist spinning operation is interrupted, the additive is discharged from the discharge portion 63E even if the supply of mist air is stopped and the additive is aggregated. Therefore, it is possible to prevent an excessive amount of additive from being supplied to the pneumatic spinning device 7 when the mist spinning operation is resumed in the pneumatic spinning device 7.

  Also in the second embodiment, the supply of mist air to the air spinning device 7 may be continued when the mist spinning operation is interrupted.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  The first distribution pipes 63, 63A, 63B, 63C of the air distributors 60, 60A are positioned upstream of the portion (spinning chamber 43) where the spinning operation is performed in the pneumatic spinning device 7, and the yarn in the pneumatic spinning device 7. Mist air may be supplied to the outlet of Y. For example, the first distribution pipes 63, 63 </ b> A, 63 </ b> B, 63 </ b> C may supply mist air to the fiber bundle F located between the front roller pair 17 of the draft device 6 and the inlet of the air spinning device 7. In this case, the air spinning device 7 performs a dry spinning operation using the dry air supplied from the second distribution pipe 65 on the fiber bundle F to which the additive has been applied.

  The configuration in which the air distributors 60 and 60A and the additive supply device 70 are provided one by one in the spinning machines 1 and 1A has been described as an example. However, the air distribution device and the additive supply device may be provided for each spinning unit 2. Alternatively, the air distribution device and the additive supply device may be provided for each group constituted by a plurality of spinning units 2. In the case of these modifications, each additive supply device may add a different type of additive from the other additive supply devices. Further, in one spinning machine, a spinning unit in which a mist spinning operation is performed and a spinning unit in which a dry spinning operation is performed may be mixed.

  In the first embodiment and / or the second embodiment, the second air pipe 64 may be omitted. In this case, the additive supply device 70 supplies dry air using the first air pipes 62 and 62A.

  In the pneumatic spinning device 7, the hollow guide shaft body 50 may be fixed to the nozzle block 40. That is, the air spinning device 7 may not have the actuator 58. In this case, when the mist spinning operation is interrupted, the mist air is supplied to the pneumatic spinning device 7 in a state where the spinning chamber 43 is not open to the outside.

  The stop unit 106 may not be provided.

  The yarn joining device 26 may be a piecer using a seed yarn.

  The pneumatic spinning device 7 may prevent the twist of the fiber bundle from being transmitted to the upstream side of the pneumatic spinning device by the downstream end portion of the fiber guide portion instead of the needle 45. The pneumatic spinning device may include a pair of air jet nozzles for twisting the fiber bundle in opposite directions instead of the above configuration. The spinning machine may be an open-end spinning machine.

  In the spinning unit 2, the yarn storage device 11 has a function of drawing the yarn Y from the pneumatic spinning device 7. However, the yarn Y may be drawn from the pneumatic spinning device 7 by the delivery roller and the nip roller. When the yarn Y is pulled out from the pneumatic spinning device 7 by the delivery roller and the nip roller, a slack tube or a mechanical compensator that absorbs slackness of the yarn Y by a suction air flow may be provided instead of the yarn accumulating device 11.

  In the spinning machine 1, in the height direction, each device is arranged so that the yarn Y supplied on the upper side is wound on the lower side. However, each device may be arranged so that the yarn supplied on the lower side is wound up on the upper side. In this configuration, it is preferable that the first air pipe and the first distribution pipe are arranged below the air spinning device 7 in the height direction of the spinning unit 2. It is preferable that the first distribution pipe is disposed so that the connection portion with the pneumatic spinning device is at the highest position.

  In the spinning machines 1 and 1A, at least one of the bottom rollers of the draft device 6 and the traverse guide 23 are driven by the power from the second end frame 5 (that is, common to the plurality of spinning units 2). However, each part of the spinning unit 2 (for example, a drafting device, an air spinning device, a winding device, etc.) may be driven independently for each spinning unit 2.

  In the traveling direction of the yarn Y, the tension sensor 9 may be arranged on the upstream side of the yarn monitoring device 8. The unit controller 10 may be provided for each spinning unit 2. In the spinning unit 2, the waxing device 12, the tension sensor 9, and the yarn monitoring device 8 may be omitted.

  In FIG. 1, the spinning machine 1 is illustrated so as to wind up the cheese-shaped package P, but it is also possible to wind up the cone-shaped package. In the case of a cone-shaped package, yarn slack is generated by traverse of the yarn, but the slack can be absorbed by the yarn storage device 11. The material and shape of each component are not limited to the materials and shapes described above, and various materials and shapes can be employed. As long as mist air can be supplied to each spinning unit 2, the configuration of the air distribution device 60, the additive supply device 70, and the like is not limited to the configuration of the above embodiment.

  DESCRIPTION OF SYMBOLS 1,1A ... Spinning machine, 2 ... Spinning unit, 3 ... Yarn splicing cart (yarn splicing device), 6 ... Draft device, 7 ... Pneumatic spinning device, 10 ... Unit controller (control device, suppression means), 13 ... Winding 40 ... Nozzle block, 43 ... Spinning chamber, 44 ... First nozzle (nozzle), 50 ... Hollow guide shaft, 51 ... Passage, 58 ... Actuator (moving part), 60 ... Air distributor (supply device), 62, 62A ... first air pipe (suppression means), 63, 63A, 63B, 63C ... first distribution pipe (supply pipe, suppression means), 63E ... discharge section, 70 ... additive supply apparatus (supply apparatus), 106 A stop part, 108 an operation part, B a bobbin, F a fiber bundle, P a package, S a sliver (fiber bundle).

Claims (17)

An air spinning device that generates yarn by spinning operation that twists the fiber bundle with air; and
A winding device that winds the yarn around a bobbin to form a package;
A supply device for supplying additive-containing air containing a predetermined amount of additive between a position upstream of the inlet of the fiber bundle in the pneumatic spinning device and an outlet of the yarn in the pneumatic spinning device;
A spinning machine comprising: suppression means for suppressing a change in the ratio of the additive contained in the additive-containing air. The supply device has one end connected to the pneumatic spinning device, and includes a supply pipe through which the additive-containing air flows,
The suppression means is the supply pipe,
The spinning machine according to claim 1, wherein the supply pipe is arranged so as to be higher in a direction in which the additive-containing air flows toward the pneumatic spinning device. The supply device has one end connected to the pneumatic spinning device, and includes a supply pipe through which the additive-containing air flows,
2. The spinning machine according to claim 1, wherein the suppression unit is a discharge portion that is provided at a lowest position of a portion that protrudes downward in the middle of the supply pipe and is capable of discharging the additive. A plurality of spinning units each having the pneumatic spinning device;
The supply device includes an air pipe that extends along an arrangement direction of the plurality of spinning units and through which the additive-containing air supplied to each of the supply pipes connected to the air spinning device passes. ,
The air pipe is disposed below the air spinning device in the height direction of the spinning unit,
The spinning machine according to claim 2 or 3, wherein the suppressing means includes the air pipe.   The spinning machine according to any one of claims 2 to 4, wherein the supply pipe is disposed below the pneumatic spinning device in a height direction.   The spinning machine according to any one of claims 1 to 5, further comprising a control device that controls an operation of the supply device. The suppression means is a control device that controls the operation of the supply device;
When the spinning operation is temporarily interrupted in an operating state in which the spinning operation is to be performed continuously by the pneumatic spinning device, the control device is configured to remove from the supply device during at least a part of the suspension. The spinning machine according to claim 1, wherein the additive-containing air is supplied.   The control device is configured to supply the additive-containing air from the supply device during the spinning operation by the pneumatic spinning device, during the suspension of the spinning operation and during the spinning operation after the suspension. The spinning machine according to claim 7, wherein the supply is continued. A yarn joining device that performs a yarn joining operation to join the yarn from the pneumatic spinning device and the yarn from the winding device when the yarn is cut;
The spinning machine according to claim 7 or 8, wherein the control device causes the additive-containing air to be supplied from the supply device during at least a part of the yarn joining operation by the yarn joining device. A draft device for drafting the fiber bundle;
The control device stops the operation of the draft device when the spinning operation is interrupted, and supplies the additive-containing air from the supply device during at least a part of the suspension. The spinning machine according to any one of the above. The supply device supplies the additive-containing air to a portion where the spinning operation is performed in the pneumatic spinning device,
The spinning machine according to any one of claims 7 to 10, wherein the pneumatic spinning device generates the yarn by an additive spinning operation that twists the fiber bundle with the additive-containing air. The pneumatic spinning device is
A spinning block in which the fiber bundle is swirled by the swirling flow of the additive-containing air, and a nozzle block having a nozzle through which the additive-containing air injected into the spinning chamber passes to generate the swirling flow;
A hollow guide shaft body having a passage for guiding the fiber bundle swung in the spinning chamber to the outside;
A spinning position where the hollow guide shaft body is located during the additive spinning operation, and a moving unit that moves the hollow guide shaft body to a separated position farther from the spinning chamber than the spinning position,
The control device allows the additive-containing air to be supplied from the supply device to the pneumatic spinning device during at least a part of the time when the hollow guide shaft is in the separated position. 11. The spinning machine according to 11. A stop unit for stopping the supply of the additive-containing air from the supply device;
The spinning machine according to any one of claims 6 to 12, wherein the control device stops the supply of the additive-containing air from the supply device when receiving a stop signal from the stop unit. The supply device supplies the air not containing the additive to the air spinning device,
The spinning machine according to any one of claims 6 to 13, wherein the control device stops the supply of the air from the supply device to the pneumatic spinning device when the spinning operation is interrupted. An operation unit for ending the spinning operation in the pneumatic spinning device;
When the control device receives an end signal from the operation unit, the control device stops the supply of the additive-containing air from the supply device and starts the supply of the air, and after supplying the air for a predetermined time, The spinning machine according to any one of claims 6 to 14, wherein supply of air is stopped.   The control device is configured to perform the spinning in the pneumatic spinning device at a time other than the case where the spinning operation is resumed from a state where the spinning operation is interrupted in an operation state in which the spinning operation is to be continuously performed by the pneumatic spinning device. The spinning machine according to any one of claims 6 to 15, wherein the additive-containing air is supplied from the supply device for a predetermined time before the operation is started. An air spinning device that generates yarn by spinning operation that twists the fiber bundle with air; and
A supply device for supplying additive-containing air containing a predetermined amount of additive between a position upstream from the inlet of the fiber bundle in the pneumatic spinning device and an outlet of the yarn in the pneumatic spinning device; A spinning method carried out in a spinning machine comprising:
When the spinning operation is temporarily interrupted in an operating state in which the spinning operation is to be performed continuously by the pneumatic spinning device, the additive-containing air is supplied from the supply device during at least a part of the suspension. Supplying spinning method.

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