JP2018172817A - Spinning machine and spinning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning machine and a spinning method capable of stably supplying additives.SOLUTION: A spinning machine 1 comprises a plurality of spinning units 2 having an air spinning device 7 for generating a yarn Y and a winding device 13 for winding a yarn Y around a bobbin B to form a package P, a supply device 60 for supplying additives to each of the air spinning devices 7 of the plurality of spinning units 2, and a control device 10 for controlling operations of the supply device 60. The control device 10 controls operations of the plurality of spinning units 2 and the supply device 60 so that the additive is supplied to both of the spinning unit 2 which is generating the yarn Y and the spinning unit 2 which is not generating the yarn Y in a changing period in which the number of spinning units 2 generating the yarn Y increases or decreases.SELECTED DRAWING: Figure 5

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 a plurality of spinning units including an air spinning device that twists a fiber bundle using air, a pneumatic feeding device that pumps air, and an air that guides the air pumped by the pneumatic feeding device. Piping, an additive supply device for supplying additive to the air piping on the upstream side where the air flowing through the air piping is branched toward each air spinning device, and control for adjusting the amount of additive supplied by the additive supply device And a device.

JP 2012-97391 A

  In the spinning machine as described above, when an instruction to start the operation of the spinning unit is input, the operation starts sequentially from the spinning unit for which preparation (yarn joining operation by the yarn joining cart) is completed. Therefore, in the spinning machine, it takes time until the operation is started in all the spinning units scheduled to operate. The additive supply device supplies an amount of additive that is set in accordance with the number of spinning units (pneumatic spinning devices) of the planned operation. Therefore, in the case of a conventional spinning machine, when the number of spinning units that start a spinning operation that generates yarn at the beginning of the operation is small, it is added to the pneumatic spinning device of the spinning unit that started the spinning operation at an early stage. There is a risk of excessive supply of the agent. If the additive is excessively supplied to the fiber bundle, the yarn quality may change due to, for example, a change in the twist state.

  An object of one aspect of the present invention is to provide a spinning machine and a spinning method capable of stably supplying an additive.

  A spinning machine according to one aspect of the present invention includes a plurality of spinning machines including an air spinning device that twists a fiber bundle with air to generate a yarn, and a winding device that winds the yarn around a bobbin to form a package. A spinning device that generates a yarn, and a control device that controls the operation of the spinning units and the feeding device. In a change period in which the number of units increases or decreases, the operations of the plurality of spinning units and the supply devices are performed so that the additive is supplied to both the spinning unit that generates the yarn and the spinning unit that does not generate the yarn. Control.

  In the spinning machine according to one aspect of the present invention, the additive is also supplied to the spinning unit that is not generating the yarn during the change period in which the number of spinning units that are generating (spinning) the yarn is increased or decreased. . That is, since the yarn is not generated, the additive is also supplied to a spinning unit that does not need to supply the additive. In this spinning machine, for example, when yarn is generated in a small number (one or a plurality of) spinning units but yarn is not generated in many other spinning units (for example, yarns are generated in other spinning units). Additives are supplied to all spinning units even before or after production has started. For this reason, during the change period, the supply amount of the additive supplied from the supply device to each spinning unit is suppressed from fluctuating in accordance with the number of spinning units that produce the yarn. Therefore, in this spinning machine, it is suppressed that the additive is excessively supplied to the spinning unit. As a result, the present spinning machine can stably supply the additive. At this time, there is also an advantage that it is not necessary to adjust the amount (supply amount) of the additive coming out of the supply device in accordance with the number of spinning units generating the yarn.

  In one embodiment, the change period is at least one of a period in which the number of spinning units producing yarn gradually increases and a period in which the number of spinning units producing yarn gradually decreases. Also good. During a period in which the number of spinning units gradually increases and a period in which the number of spinning units gradually decreases, the operations of the plurality of spinning units are sequentially started or stopped. During such a period, by supplying the additive to both the spinning unit that produces the yarn and the spinning unit that does not produce the yarn, the supply amount of the additive in each spinning unit can vary. Can be suppressed.

  In one embodiment, the change period is a period in which the number of spinning units producing yarn gradually increases, and may be at least one after the machine stand rise and after the lot change. Since the operation of a plurality of spinning units is started sequentially after the machine stands up or after a lot change, yarns are generated in order to suppress fluctuations in the supply amount of additive in each spinning unit. It is particularly effective to supply additives to both the spinning unit and the spinning unit that is not producing yarn.

  In one embodiment, the change period is a period in which the number of spinning units producing yarn gradually decreases, and may be at least one immediately before the machine base stop and immediately before the lot change. Immediately before the machine stop and immediately before the lot change, the operations of the plurality of spinning units are sequentially stopped. Therefore, in order to suppress fluctuations in the supply amount of the additive in each spinning unit, yarn is generated. It is particularly effective to supply additives to both the spinning unit and the spinning unit that is not producing yarn.

  In one embodiment, the additive may be supplied to the pneumatic spinning device. In this configuration, since the additive is directly supplied to the pneumatic spinning device, depending on the type of additive, it is possible to effectively generate yarn using the additive, or an oil agent applied to the fiber bundle, etc. Can be effectively prevented from being deposited on the pneumatic spinning device.

  In one embodiment, a draft device for drafting the fiber bundle supplied to the pneumatic spinning device is provided, and the additive may be supplied between the draft device and the pneumatic spinning device. In this configuration, an additive can be applied to the fiber bundle.

  In one embodiment, the control device includes a spinning unit that generates a yarn and a spinning unit that does not generate a yarn when the yarn is generated in a predetermined number or less of the plurality of spinning units. The additive may be supplied to both. Thereby, for example, when there are a small number of spinning units that are producing yarn, it is possible to suppress excessive supply of additives to the spinning units that are producing yarn.

  In one embodiment, the supply device may supply the additive as additive-containing air containing the additive to each of the plurality of spinning units. In this configuration, the yarn can be generated by the additive-containing air in each spinning unit.

  In one embodiment, the supply device extends in the arrangement direction of the plurality of spinning units, and includes an air pipe through which the additive-containing air flows, an additive storage tank that stores the additive, and an additive storage tank. An additive supply pipe connected to one end of the additive supply pipe, and the other end of the additive supply pipe is upstream of the point where the additive-containing air flowing through the air pipe is branched toward each of the spinning units. It may be connected to. In this configuration, additive-containing air can be supplied to a plurality of spinning units.

  A spinning method according to one aspect of the present invention includes a plurality of spinning devices including an air spinning device that twists a fiber bundle with air to generate a yarn, and a winding device that winds the yarn around a bobbin to form a package. A spinning method implemented in a spinning machine comprising a unit and a supply device that supplies an additive to each of a plurality of spinning units, wherein the number of spinning units producing yarn is increased or decreased The operations of the plurality of spinning units and the supply device are controlled so that the additive is supplied to both the spinning unit that generates the yarn and the spinning unit that does not generate the yarn.

  In the spinning method according to one aspect of the present invention, the additive-containing air is supplied to the spinning unit that is not generating the yarn in the change period in which the number of spinning units that are generating (spinning) the yarn is increased or decreased. To. That is, since the yarn is not generated, the additive-containing air is also supplied to a spinning unit that originally does not require the supply of the additive-containing air. In this spinning method, for example, when a yarn is generated in a small number (one or a plurality) of spinning units, but a yarn is not generated in many other spinning units (for example, yarns are generated in other spinning units). Even before production is started or after the end), all spinning units are supplied with additive-containing air. For this reason, during the change period, the supply amount of the additive-containing air supplied from the supply device to each spinning unit is suppressed from fluctuating according to the number of spinning units that produce the yarn. Therefore, in the present spinning method, excessive supply of the additive to the spinning unit is suppressed. As a result, the present spinning method can stably supply the additive.

  According to one aspect of the present invention, the additive can be stably supplied.

FIG. 1 is a front view showing a spinning machine according to an embodiment. FIG. 2 is a side view of the spinning unit of the spinning machine of FIG. FIG. 3 is a cross-sectional view of the pneumatic spinning device at the spinning position. FIG. 4 is a cross-sectional view of the pneumatic spinning device in the separated position. FIG. 5 is a diagram showing a configuration of an air distribution device and an additive supply device of a spinning machine.

  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 control device (control device) 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. The unit controller (control device) 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. Alternatively, the yarn Y may be cut by stopping the rotation of any of the roller pairs 14, 15, 16, and 17 (preferably the back roller pair 14) of the draft device 6. Alternatively, the yarn Y may be cut by moving the pneumatic spinning device 7 from a spinning position described later toward a separated position.

  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, after the operation of generating the yarn Y in the pneumatic spinning device 7 (hereinafter referred to as the spinning operation) is interrupted, air is injected from the plurality of second nozzles 54 into the passage 51 when the generation of the yarn Y is resumed. .

  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. The pneumatic spinning device 7 includes an actuator (not shown) that moves the hollow guide shaft body 50 to a spinning position where the hollow guide shaft body 50 is located, and a separated position farther from the spinning chamber 43 than the spinning position. 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 is, for example, an air cylinder or a stepping motor. The operation of the actuator 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. 5, 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 air pipe 62 may be provided below the pneumatic spinning device 7 or may be provided at the same height as the pneumatic 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. In the present embodiment, the mist air is configured to be supplied to the spinning chamber 43 via the first nozzle 44. The fiber bundle F can be twisted by the mist air supplied to the spinning chamber 43 to generate the yarn Y. 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 the mist air, an operation (hereinafter referred to as a mist spinning operation) for generating the yarn Y using the 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. In the present embodiment, the dry air is configured to be supplied to the spinning chamber 43 via the first nozzle 44. Then, the fiber bundle F is twisted by the dry air supplied to the spinning chamber 43 so that the yarn Y can be generated. 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 pneumatic spinning device 7 supplied with the dry air, an operation (hereinafter referred to as a dry spinning operation) for generating the yarn Y 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, mist air is basically ejected from the first nozzle 44 until the winding of one package P is completed.

  As shown in FIG. 5, 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 may be water. 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.

  Next, a spinning method using the spinning machine 1 will be described. First, a method for generating a yarn Y using mist air after the spinning machine 1 is started or a lot is changed, and a method for generating a yarn Y using mist air immediately before the spinning machine 1 is stopped and immediately before a lot is changed. Will be described as an example. That is, a spinning method in a period (change period) in which the number of spinning units 2 producing the yarn Y gradually increases and a period in which the number of spinning units 2 producing the yarn Y gradually decreases (change period). Will be described. Note that the lot means spinning conditions and production conditions, and lot change can also be referred to as change of production yarn type.

[Spinning method in a period in which the number of spinning units 2 producing the yarn Y gradually increases]
First, the operator sets the spinning unit 2 to be operated (to perform the spinning operation) using the input key 104 (the spindle number of the spinning unit 2 is selected or the number is input). Also, the operator inputs the type of raw material of the sliver S as one of the setting items of the lot with the input key 104. Note that the type of raw material of the sliver S may be automatically selected by selecting a preset lot. 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 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 based on an instruction from the machine base control device 100, whereby the first air pipe 62. To supply air. 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. Accordingly, mist air is supplied to all the air spinning devices 7 that perform the spinning operation.

  The machine control device 100 instructs the unit controller 10 to start an operation when a predetermined time (for example, 10 minutes) has passed since the supply of mist air to each pneumatic spinning device 7 is started. The unit controller 10 starts the 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. In the spinning machine 1, when the machine controller 10 instructs the unit controller 10 to start the operation, preparations (such as setting the sliver S to the draft device 6, yarn joining work by the yarn joining cart 3) are completed. The spinning operation is sequentially started from the spinning units 2 that have been made. Therefore, the timing at which the mist spinning operation in the spinning unit 2 is started differs for each spinning unit 2. At this time, mist air is supplied to both the spinning unit 2 that is generating the yarn Y (spinning operation is performed) and the spinning unit 2 that is not generating the yarn Y (not performing the spinning operation). Has been.

  The mist spinning operation is started, and the yarn Y generated by the pneumatic spinning device 7 is stored in the yarn storage device 11 and wound on the package P by the winding device 13.

[Spinning method in a period in which the number of spinning units 2 producing the yarn Y gradually decreases]
The machine control apparatus 100 is input (designated) with the number or total weight of the packages P formed in the lot. Then, when the number or total weight of the formed packages P approaches the specified number or total weight, the machine control device 100 sequentially stops the operation in the spinning unit 2 that formed the package P of the lot. Specifically, in the spinning machine 1, the spinning operation is sequentially stopped from the spinning unit 2 in which the formation of the package P to be formed is completed (the package P is full). In the spinning unit 2, the operations of the draft device 6, the yarn storage device 11, and the winding device 13 are stopped. Therefore, the timing at which the mist spinning operation in the spinning unit 2 ends differs for each spinning unit 2. At this time, mist air is supplied to both the spinning unit 2 that generates the yarn Y and the spinning unit 2 that does not generate the yarn Y.

  When the spinning operation of all the spinning units 2 stops, the machine base control device 100 instructs the air distributor 60 to stop the operation. The air distributor 60 stops the supply of air to the first air pipe 62 by closing the valve 66 based on an instruction from the machine base controller 100. The additive supply device 70 stops spraying the additive stored in the additive storage tank 73 onto the first air pipe 62. The unit controller 10 closes the opening / closing valve 63 a provided in the first distribution pipe 63. Thereby, the supply of mist air to all the air spinning devices 7 that perform the spinning operation is stopped.

  Next, a method for generating the yarn Y using mist air in a steady operation state will be described. That is, a spinning method in a period in which the number of spinning units 2 generating the yarn Y does not increase or decrease (a period in which there is a slight increase or decrease in the middle) will be described.

  When the yarn Y is cut in the spinning unit 2, the unit controller 10 interrupts the 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 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. When the yarn splicing operation by the yarn splicing cart 3 is completed, the unit controller 10 restarts the mist spinning operation in the pneumatic spinning device 7 of the spinning unit 2. That is, the spinning unit 2 instantaneously stops the supply of mist air to the pneumatic spinning device 7 in order to cut the yarn Y, but is waiting for the yarn joining carriage 3 to arrive at its spinning unit 2. During standby and during the yarn splicing operation, supply of mist air to the air spinning device 7 is continued. The supply of mist air may be stopped during the yarn splicing standby when the spinning is interrupted.

  When the package P becomes full in the spinning unit 2, the unit controller 10 interrupts the operation in the spinning unit 2. Specifically, the unit controller 10 stops the operation of the draft device 6 and the winding device 13 when the package P becomes full in the spinning unit 2. When the unit controller 10 outputs a signal indicating the doffing of the package P from the unit controller 10, the machine control device 100 causes the doffing cart to perform a doffing 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 doffing operation by the doffing cart is completed.

  Note that the unit controller 10 opens the open / close valve 63a provided in the first distribution pipe 63 when a key for stopping the supply of mist air is operated on the input key 104 when, for example, the mist spinning operation by the spinning unit 2 is interrupted. close up. As a result, the supply of mist air to the corresponding pneumatic spinning device 7 is temporarily interrupted. 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 mist spinning operation in the spinning unit 2 is resumed. Note that maintenance work by an operator (for example, work for eliminating choke clogging in the air spinning device 7 and work for eliminating fiber wrapping in the draft device 6) is performed in a single spinning unit 2 in a short time. Therefore, even if the supply of mist air is temporarily stopped, the supply amount of mist air supplied to the air spinning device 7 of the other spinning unit 2 does not vary greatly. The restart of the mist spinning operation means that the mist spinning operation is restarted after the mist spinning operation is temporarily interrupted in an operating state in which the air spinning device 7 should continuously perform the mist spinning operation. . Temporary interruption means that the mist spinning operation is performed only for a short time by, for example, yarn joining operation, doffing operation, maintenance work or the like while the yarn Y is being generated by the pneumatic spinning device 7 based on a predetermined lot. Is to stop.

  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 a predetermined key of the input key 104 is operated, the air distribution device 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. Thereby, the supply of mist air from the first air pipe 62 to the pneumatic spinning device 7 is stopped, and the supply of dry air from the second air pipe 64 to the pneumatic 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 the present embodiment, the spinning unit 2 that does not generate the yarn Y is also changed during the change period in which the number of the spinning units 2 that generate (spin) the yarn Y increases or decreases. Allow mist air to be supplied. That is, since the yarn Y is not generated, the mist air is also supplied to the spinning unit 2 that originally does not require the supply of mist air. In the spinning machine 1, for example, when the yarn Y is generated in a small number (one or a plurality) of spinning units 2, but the yarn is not generated in many other spinning units 2 (for example, other spinning units). 2), the mist air is supplied to all the spinning units 2. Therefore, during the change period, the supply amount of the mist air supplied from the air distributor 60 to each pneumatic spinning device 7 is suppressed from fluctuating according to the number of spinning units 2 that generate the yarn Y. . Therefore, in the spinning machine 1, excessive supply of additives to the spinning unit 2 is suppressed. As a result, the spinning machine 1 can stably supply the additive. In addition, it is not necessary to adjust the amount of the additive supply device 70 spraying the additive onto the first air pipe 62 according to the number of spinning units 2 generating the yarn Y.

  In the spinning machine 1 according to the present embodiment, the change period is a period in which the number of the spinning units 2 that generate the yarn Y gradually increases, and the number of the spinning units 2 that generate the yarn Y gradually decreases. At least one of the periods. Specifically, the change period is a period in which the number of spinning units 2 generating the yarn Y gradually increases, and is at least one after the machine stand rise and after the lot change. Alternatively, the change period is a period in which the number of spinning units 2 generating the yarn Y gradually decreases, and is at least one immediately before the machine base stop and immediately before the lot change. Since the operation of the plurality of spinning units 2 is started or stopped sequentially after the machine stand rises or after the lot change, immediately before the machine stand stop and immediately before the lot change, supply of mist air in each spinning unit 2 In order to suppress fluctuations in the amount, it is particularly effective to supply mist air to both the spinning unit 2 that generates the yarn Y and the spinning unit 2 that does not generate the yarn Y.

  In the spinning machine 1 according to the present embodiment, the first distribution pipe 63 and the second distribution pipe 65 are independently connected to the pneumatic spinning device 7. According to such a configuration, since the route through which mist air and dry air circulate is different, when dry spinning is performed, the remainder of the additive during mist spinning is not included in the dry air. Therefore, the influence of the additive during dry spinning can be suppressed. Moreover, it can be set as a simple structure. Furthermore, the first distribution pipe 63 and the second distribution pipe 65 can be easily configured to have a path structure that is optimal for the flow of mist air and dry air. Since the second distribution pipe 65 is connected to the air spinning device 7 via a check valve, the mist air is prevented from flowing into the second distribution pipe 65.

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

  In the embodiment described above, an example in which mist air is injected from the plurality of first nozzles 44 into the spinning chamber 43 has been described as an example. However, the mist air may be injected into the spinning chamber 43 from a nozzle provided in the fiber guide portion 41 that holds the needle 45, for example.

  Further, as a modified example in which the mist air is guided to each pneumatic spinning device 7, the mist air flows into the passage 51 through the air passage 55 and the second nozzle 54, and an additive is applied to the yarn Y passing through the passage 51. May be. As another modification, a new air flow path different from the air flow path 55 and the second nozzle 54 is formed in the hollow guide shaft body 50, and the mist air enters the passage 51 through the new air flow path. An additive may be applied to the yarn Y that flows in and passes through the passage 51. In these modified examples, dry air is supplied to the first nozzle 44 of the pneumatic spinning device 7.

  Moreover, in the said embodiment and modification, the 1st distribution pipe 63 was connected to the pneumatic spinning apparatus 7, and demonstrated the form which supplied mist air directly to the pneumatic spinning apparatus 7 as an example. However, the mist air may be supplied between the draft device 6 and the air spinning device 7. In this configuration, for example, a nozzle that injects mist air (the other end of the branch pipe having one end connected to the first air pipe 62) is disposed at a position between the draft device 6 and the air spinning device 7. . In this modification, dry air is supplied to the first nozzle 44 of the pneumatic spinning device 7.

  In the embodiment described above, an example in which each of the first distribution pipe 63 and the second distribution pipe 65 is independently connected to the pneumatic spinning device 7 has been described. However, the first distribution pipe 63 and the second distribution pipe 65 may be connected to the first nozzle 44 via a common shuttle valve. Specifically, one end of the first distribution pipe 63 and one end of the second distribution pipe 65 are connected to a common shuttle valve (not shown) connected to the first nozzle 44 of the pneumatic spinning device 7.

  In the said embodiment, the form which the pressure regulator 72 is a pressure increase valve or an electric compressor demonstrated to an example. However, the pressure regulator 72 may be an electronic regulator. In this configuration, the pressure adjusting device 72 can adjust the internal pressure of the additive storage tank 73 by pressurizing the air guided to the additive storage tank 73 according to the operating status of the spinning unit 2, for example. Specifically, when the pressure adjusting device 72 receives a signal related to the operating status of the spinning unit 2 output from the machine control device 100, the pressure adjusting device 72 adjusts the internal pressure of the additive storage tank 73 steplessly according to the signal. To do. Thus, mist air corresponding to the operating status of the spinning unit 2 is supplied to the first air pipe 62. Further, the pressure adjusting device 72 may adjust the internal pressure of the additive storage tank 73 according to the type (yarn type) and / or count of the sliver S.

  In addition to the above embodiment, in the spinning machine 1, when a predetermined number or less of the plurality of spinning units 2 generate the yarn Y, the spinning unit 2 that generates the yarn Y and the yarn You may control operation | movement of the several spinning unit 2 and the air distribution apparatus 60 so that mist air may be supplied to both the spinning units 2 which are not producing | generating Y. Specifically, for example, when the spinning machine 1 includes N spinning units 2, more spinning units 2 than the half N / 2 (for example, more than 80%) generate the yarn Y. If the yarn Y is generated only with less than half (for example, 20% or less) of the spinning units 2, the mist is also transferred from the air distributor 60 to the spinning unit 2 that does not generate the yarn Y. Supply air. Thereby, it can suppress that an additive is supplied to the spinning unit 2 which is producing | generating the yarn Y excessively. The spinning machine 1 supplies mist air from the air distributor 60 to the spinning unit 2 based on the ratio between the spinning unit 2 that is generating the yarn Y and the spinning unit 2 that is not generating the yarn Y. You may go.

  In the embodiment described above, an example in which one spinning machine 1 includes one additive storage tank 73 has been described. However, a plurality of additive reservoirs may be provided. In this configuration, one additive storage tank may cover a group composed of a plurality of spinning units. Moreover, in this structure, it is preferable that this invention is applied for every group of the spinning unit which one additive storage tank covers.

  In the above embodiment and the modification, the additive is supplied to the spinning unit as mist air (additive-containing air). However, the additive is supplied to the spinning unit in a liquid state (for example, without misting water). Also good. In this case, for example, in the configuration shown in FIG. 5, the additive supply device 70 is configured as an additive supply device capable of supplying a liquid additive, and the first air pipe 62 is capable of circulating liquid. The first distribution pipe 63 is a first distribution pipe through which a liquid can flow. The regulator 61a supplies air only to the second air pipe 64 out of the liquid circulation pipe and the second air pipe 64, and the liquid additive stored in the additive supply device is supplied to the liquid circulation pipe and the first air pipe. It can be considered that the distribution pipe is circulated and supplied to the spinning unit in a liquid state. As an example, it is conceivable that the liquid additive is supplied in such a manner that it is dropped onto a yarn or fiber bundle in a spinning unit. The additive may be supplied to the spinning unit intermittently or not intermittently (continuously supplied) regardless of whether the additive is in a liquid or mist state. Also good. In the case of intermittent supply, for example, it is conceivable to supply in a predetermined supply cycle such as performing an opening / closing operation of an opening / closing valve provided in the first distribution pipe once or a plurality of times per second.

  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 the spinning machine 1, at least one of the bottom rollers of the draft device 6 and the traverse guide 23 are driven by 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 ... Spinning machine, 7 ... Air spinning apparatus, 10 ... Unit controller (control apparatus), 13 ... Winding apparatus, 60 ... Air distribution apparatus (supply apparatus), 62 ... 1st air piping (air piping), 70 ... Addition Agent supply device (supply device), 73 ... Additive reservoir, 74 ... Additive supply pipe, 100 ... Machine control device (control device), B ... Bobbin, F ... Fiber bundle, P ... Package, S ... Sliver ( Fiber bundle).

Claims (10)

A plurality of spinning units comprising: an air spinning device that twists a fiber bundle with air to generate a yarn; and a winding device that winds the yarn around a bobbin to form a package;
A supply device for supplying an additive to each of the plurality of spinning units;
A plurality of spinning units and a control device for controlling the operation of the supply device,
In the change period in which the number of spinning units generating the yarn increases or decreases, the control device includes both the spinning unit that generates the yarn and the spinning unit that does not generate the yarn. A spinning machine that controls operations of the plurality of spinning units and the feeding device so that an additive is supplied.   The change period is at least one of a period in which the number of spinning units producing the yarn gradually increases and a period in which the number of spinning units producing the yarn gradually decreases. Item 2. The spinning machine according to item 1.   The spinning machine according to claim 2, wherein the change period is a period in which the number of the spinning units generating the yarn gradually increases, and is at least one after the machine standup and after the lot change.   The spinning machine according to claim 2, wherein the change period is a period in which the number of spinning units that are generating yarn gradually decreases, and is at least one of immediately before a machine base stop and immediately before a lot change.   The spinning machine according to any one of claims 1 to 4, wherein the additive is supplied to the pneumatic spinning device. A draft device for drafting the fiber bundle supplied to the pneumatic spinning device;
The spinning machine according to any one of claims 1 to 4, wherein the additive is supplied between the draft device and the pneumatic spinning device.   The control device, when the yarn is generated in a predetermined number or less of the plurality of spinning units, the spinning unit that is generating the yarn and the yarn that is not generated The spinning machine according to any one of claims 1 to 6, wherein the additive is supplied to both of the spinning units.   The spinning machine according to any one of claims 1 to 7, wherein the supply device supplies the additive as additive-containing air containing the additive to each of the plurality of spinning units. The supply device includes:
An air pipe extending along an arrangement direction of the plurality of spinning units, and through which the additive-containing air flows;
An additive storage tank for storing the additive;
An additive supply pipe whose one end is connected to the additive reservoir,
The spinning according to claim 8, wherein the other end portion of the additive supply pipe is connected to an upstream side of a portion where the additive-containing air flowing through the air pipe is branched toward each of the spinning units. Machine. A plurality of spinning units comprising: an air spinning device that twists a fiber bundle with air to generate a yarn; and a winding device that winds the yarn around a bobbin to form a package;
A spinning method implemented in a spinning machine comprising a supply device for supplying an additive to each of the plurality of spinning units,
The additive is supplied to both the spinning unit that is producing the yarn and the spinning unit that is not producing the yarn in a change period in which the number of spinning units producing the yarn increases or decreases. A spinning method for controlling operations of the plurality of spinning units and the supply device.

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