JP2016089302A - Spinning machine and working carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning machine and a working carriage capable of further effectively removing foreign matter.SOLUTION: A spinning machine 1 comprises a spinning device 7 for generating yarn Y by providing a fiber bundle F with a twist, a yarn monitoring apparatus 8 for monitoring the state of yarn on the basis of information detected by detection units 81 and 82 detecting the state of running yarn, and a cleaning unit 33 which moves in a direction of yarn running and cleaning the yarn monitoring apparatus on the way in the running direction.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a spinning machine and a work carriage.

  2. Description of the Related Art A spinning machine including a yarn monitoring device that monitors a yarn defect generated by an air spinning device is known. In such a spinning machine, for example, when foreign matter such as lint, fluff and dust adheres to and / or floats in the vicinity of the detection unit that detects the state of the yarn in the yarn monitoring device, the yarn monitoring device There is a risk that the status cannot be monitored accurately.

  Patent Document 1 discloses a yarn monitoring device (yarn clearer) that injects air into a yarn passage and blows away foreign matter adhering to the vicinity of a detection unit. Further, in Patent Document 2, a branch pipe is formed so as to branch from the suction pipe of the yarn splicing device, and is attached to the vicinity of the yarn monitoring device (slab catcher) when the suction pipe rotates (when the yarn is captured). A spinning machine that sucks and removes floating foreign matters is disclosed. Patent Document 3 discloses a spinning machine that is attached to a suction pipe of a yarn splicing device and that blows away and removes foreign matter adhering to and / or floating near the yarn monitoring device (yarn clearer) when the suction pipe rotates. Has been.

JP 2013-230908 A JP-A-4-21577 JP 2000-327226 A

  However, in the yarn monitoring device of Patent Document 1, since air is injected to a predetermined portion of the yarn passage, the range in which foreign matter can be removed is narrow. In the spinning machines of Patent Documents 2 and 3, since suction or air injection is performed only at a position where the suction pipe captures the yarn, the range in which foreign matter can be removed is narrow as in Patent Document 1, depending on the position. Foreign matter may not be removed.

  Then, an object of this invention is to provide the spinning machine and work trolley | bogie which can remove a foreign material more effectively.

  The spinning machine of the present invention includes a spinning device that twists a fiber bundle to generate a yarn, a yarn monitoring device that monitors the state of the yarn based on information detected by a detection unit that detects the state of the traveling yarn, and A cleaning unit that moves along the traveling direction in which the yarn travels, and that cleans the yarn monitoring device in the middle of the movement along the traveling direction.

  Here, “moving along the traveling direction” is not limited to moving in a direction parallel to the traveling direction, but includes a movement in a direction slightly deviated from the direction parallel to the traveling direction. In the spinning machine having this configuration, the yarn monitoring device is cleaned while the cleaning unit moves along the traveling direction, so that the yarn monitoring device can be cleaned in a wider range. As a result, foreign matters can be removed more effectively.

  In the spinning machine of the present invention, the yarn monitoring device has a yarn passage forming portion that forms a yarn passage for allowing the traveling yarn to pass therethrough, and the detection unit detects the yarn traveling in the yarn passage. Also good.

  In the spinning machine configured as described above, the cleaning section can be cleaned while moving in the traveling direction with respect to the yarn path extending in the traveling direction, so that the entire yarn path can be cleaned.

  In the spinning machine of the present invention, provided separately from the cleaning unit, an injection unit that injects gas into the yarn passage, a control unit that operates the cleaning unit and the injection unit when the yarn generation operation in the spinning device is stopped, May be further provided.

  In the spinning machine configured as described above, foreign matter adhering to and / or floating in the yarn passage can be removed by the injection unit, and foreign matter adhering to and / or floating in the vicinity of the yarn passage or the yarn passage can be removed by the cleaning unit. As a result, foreign matters can be removed more effectively.

  In the spinning machine of the present invention, the cleaning unit cleans the yarn monitoring device by injecting gas into the yarn passage, and the injecting unit injects gas in a direction different from the direction in which the cleaning unit injects gas. Good.

  In the spinning machine having this configuration, since the gas is injected to the yarn monitoring device from different directions by the cleaning unit and the injection unit, foreign matter can be removed in a wider range. As a result, foreign matters can be removed more effectively.

  In the spinning machine of the present invention, the control unit may operate the cleaning unit after operating the injection unit.

  In the spinning machine having this configuration, the foreign matter adhering to and / or floating in the yarn passage can be first removed from the yarn passage, and then the foreign matter in the vicinity of the yarn passage can be removed. Thereby, for example, it is possible to perform effective cleaning, such as preventing foreign matter from entering the back of the yarn path by the action of the cleaning unit.

  In the spinning machine of the present invention, the yarn end catching portion that catches the yarn end of the yarn generated in the spinning device, and the yarn end catching portion between the standby position and the catching position that catches the yarn end along the traveling direction. A moving member to be moved, and the cleaning unit may be disposed on the moving member.

  In order to clean the yarn monitoring device while moving, a moving member for moving the cleaning unit is required. In the spinning machine having this configuration, since the cleaning unit is disposed on the moving member that moves the yarn end capturing unit, it is not necessary to provide two moving members.

  In the spinning machine of the present invention, the spinning device, the yarn monitoring device, and a winding unit that winds the yarn supplied from the spinning device as a package, each of which includes a plurality of spinning units, and at least one of the plurality of spinning units. A work carriage that is movably provided with respect to the spinning unit, and the work carriage may include a moving member and a gas supply source that supplies gas to the cleaning unit.

  In the spinning machine with this configuration, it is possible to inject gas from a dedicated gas supply source provided in the work carriage. For this reason, compared with injecting using the gas from the gas supply source with which a some spinning unit is provided in common, gas can be injected more strongly. As a result, foreign matters can be removed more effectively.

  The spinning machine of the present invention may further include a yarn drawing device that pulls out the yarn generated in the spinning device, and the yarn monitoring device may be disposed between the spinning device and the yarn drawing device.

  In the spinning machine having this configuration, foreign matters such as fiber waste generated in the spinning device are likely to adhere and / or float in and around the yarn path of the yarn monitoring device. In the spinning machine having such a configuration, foreign matters can be effectively removed by cleaning the yarn monitoring unit while the cleaning unit moves along the traveling direction.

  The work carriage of the present invention is a work carriage used in a spinning machine including a yarn monitoring device that monitors a state of a yarn generated in the spinning device, a yarn end catching unit that catches a yarn end of the yarn, and a standby position. And a moving member that moves the yarn end catching portion along the running direction in which the yarn runs between the catching position for catching the yarn end, and a yarn monitor that is disposed on the moving member and is being moved along the running direction. And a cleaning unit for cleaning the device.

  In the work trolley having this configuration, the yarn monitoring device is cleaned while the cleaning unit moves along the traveling direction, so that the yarn monitoring device can be cleaned in a wider range. As a result, foreign matters can be removed more effectively.

  According to the present invention, foreign matters such as lint, fluff and dust can be more effectively removed.

It is a front view of the spinning machine of one embodiment. It is a side view of the spinning unit of the spinning machine of FIG. It is sectional drawing which looked at the yarn monitoring apparatus of FIG. 1 from the yarn path direction. It is the side view which expanded and showed the suction part vicinity when the suction pipe of FIG. 2 is located in a capture position. It is the front view which expanded and showed the suction part vicinity when the suction pipe of FIG. 2 is located in a capture position. It is a functional block diagram of the spinning machine of FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted. The dimensional ratios in the drawings do not necessarily match those described.

  As shown in FIG. 1, the spinning machine 1 includes a plurality of spinning units 2, a yarn splicing carriage (working carriage) 3, a doffing carriage 4, a first end frame 5A, a second end frame 5B, It has. The plurality of spinning units 2 are arranged in a line. In the following description, in the path along which the yarn Y travels (that is, the yarn path R1), the side on which the yarn Y is generated is referred to as the upstream side, and the side on which the yarn Y is wound is referred to as the downstream side.

  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 on the spinning unit 2. The doffing cart 4 doffs the package P and supplies a new bobbin B to the spinning unit 2 when the package P is fully wound in a spinning unit 2.

  The first end frame 5A accommodates an air supply source for generating a swirling air flow or the like in each part of the spinning unit 2 and / or a suction source for generating a suction flow in each part of the spinning unit 2. .

  The second end frame 5B accommodates a drive motor for supplying power to each part of the spinning unit 2. The second end frame 5B is provided with a machine control device E, a display unit D, and an input key K.

  The machine control device E centrally manages and controls each part of the spinning machine 1. For example, the machine base control device (control unit) E of the present embodiment performs control processing in the air injection unit (cleaning unit) 33 of the yarn joining cart 3 and the air injection unit (injection unit) 18 of each spinning unit 2. . These control processes will be described in detail later. The display unit D can display information related to the setting contents and / or state of the spinning unit 2. When the operator performs an appropriate operation using the input key K, 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, and an air injection device 18 in order from the upstream side in the traveling direction of the yarn Y. , A tension sensor 9, a yarn accumulating device (yarn drawing device) 11, a waxing device 12, and a winding device 13. These devices are directly or indirectly supported by the machine frame so that the upstream side is the upper side in the machine height direction (that is, the downstream side is the lower side in the machine height direction). ing.

  The unit controller 70 is provided for each predetermined number of spinning units 2 and controls the operation of the spinning units 2. The unit controller 70 controls the operation of the spinning unit 2 based on information (signal) output from the machine base control device E.

  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 5B or a drive motor provided in each spinning unit 2. An apron belt 16 </ b> A is provided for the top roller of the middle roller pair 16. An apron belt 16B is provided for the bottom 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. More specifically (however, illustration is omitted), the pneumatic spinning device 7 includes a spinning chamber, a fiber guide portion, a swirling air flow generation nozzle, and a hollow guide shaft body. The fiber guide unit guides the fiber bundle F supplied from the upstream draft device 6 into the spinning chamber. The swirling air flow generating nozzle is disposed around the path along which the fiber bundle F travels, and generates a swirling air flow in the spinning chamber. By this swirling air flow, the fiber ends of the plurality of fibers constituting the fiber bundle F are reversed and swirled. The hollow guide shaft body guides the yarn Y from the spinning chamber to the outside of the pneumatic spinning device 7.

  The yarn monitoring device 8 is disposed between the pneumatic spinning device 7 and the yarn storage device 11. The yarn monitoring device 8 is an optical yarn monitoring device that detects the state of the yarn Y by irradiating the traveling yarn Y with light. The yarn monitoring device 8 monitors the state of the traveling yarn Y and detects the presence or absence of a yarn defect. 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 70. 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 yarn monitoring device 8 will be described in more detail with reference to FIG. The yarn monitoring device 8 includes a holder (yarn passage forming unit) 8A, and a light emitting element 81 and a light receiving element 82 as detection units.

  The holder 8A is a plastic member, and a light emitting element 81 and a light receiving element 82 for detecting the state of the yarn Y are incorporated therein. The holder 8A is formed with a yarn passage 8C through which the yarn Y passes. The yarn passage 8C is formed in a groove shape along the traveling path (yarn path R1) of the yarn Y. In the yarn passage 8C, the shape of the inner wall surface 8B when cut along a plane orthogonal to the yarn path R1 is formed in a substantially U shape. The shape of the yarn passage 8C may be other shapes.

  The light emitting element 81 can employ an appropriate light source such as an LED. The light receiving element 82 is a photodiode, which converts the intensity of the received light into an electric signal and outputs it.

  The light receiving surface of the light receiving element 82 constitutes a part of the wall surface 8B of the yarn passage 8C. A resin transparent plate 81 </ b> A is provided on a part of the wall surface 8 </ b> B facing the light receiving element 82. The light emitting element 81 is disposed on the opposite side of the yarn passage 8C (inside the holder 8A) with the transparent plate 81A interposed therebetween. The light emitting element 81 and the light receiving element 82 are arranged so as to face each other across the yarn path R1.

  As shown in FIGS. 2 and 4, the air injection device 18 is arranged on the upstream side of the yarn monitoring device 8. The air injection device 18 injects compressed air (gas) to the yarn passage 8C of the yarn monitoring device 8 to remove foreign matters such as yarn waste, fluff and dust that adhere to and / or float on the yarn passage 8C. The air injection device 18 is connected to the second air supply source 18C via the air supply hose 18B. The second air supply source 18 </ b> C is disposed, for example, in the second end frame 5 </ b> B, and supplies compressed air to the air injection device 18 disposed in each spinning unit 2.

  As shown in FIG. 5, the injection port 18 </ b> A of the air injection device 18 is disposed so as to overlap the yarn path R <b> 1 when viewed from the front, and toward the yarn passage 8 </ b> C as shown in FIG. 4. It is arranged obliquely downward. Thereby, the air injection device 18 can inject the compressed air along the yarn passage 8C.

  Returning to FIGS. 1 and 2, 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 70. 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 accumulating 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 the yarn joining operation by the yarn joining cart 3, so that the yarn Y is loosened. 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 5B 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 5B 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. As shown in FIG. 2, the yarn joining cart 3 includes a suction pipe 31, an air injection unit 33, a suction mouth 38, a yarn joining device 37, a first air supply source 39, and a yarn joining cart control unit 3A. And have.

  The suction pipe 31 captures the yarn Y from the pneumatic spinning device 7 and guides it to the yarn joining device 37. The suction pipe 31 includes a moving member 31B that is rotatably supported by the support shaft 31A, and a yarn end capturing portion 32 that sucks and holds the end portion of the yarn Y by a suction air flow.

  The moving member 31B moves the yarn end catching portion 32 between the standby position P1 and the catching position P2 for catching the yarn end along the traveling direction V (see FIG. 1) in which the yarn travels. The traveling direction V refers to the traveling direction of the yarn Y between the pneumatic spinning device 7 and the winding device 13 when the spinning machine 1 is viewed from the front.

  The yarn end catching portion 32 is fixed to the tip of the moving member 31B (the end opposite to the support shaft 31A). As shown in FIGS. 4 and 5, the yarn end catching portion 32 is arranged so that the suction port 32 </ b> A is located at the outlet of the air spinning device 7 when the moving member 31 </ b> B rotates to the catching position P <b> 2. . The yarn end catcher 32 is connected to a suction source provided in the first end frame 5A via a suction hose 32B.

  The air injection unit 33 moves along the traveling direction V, and injects compressed air (gas) to the yarn passage 8C in the middle of the movement along the traveling direction V, and adheres and / or floats on the yarn passage 8C and the vicinity thereof. Clean the foreign material More specifically, the air injection unit 33 is moved along the movement path P0 as shown in FIG. 2, and injects compressed air into the yarn passage 8C while moving in the section L as shown in FIG. To do. The section L is a position where the air injection unit 33 can inject compressed air into the yarn passage 8C.

  The injection direction of the compressed air at the injection port 33A when passing through the section L is shifted by an angle α from the extending direction of the yarn passage 8C (the yarn path R1 direction), as shown in FIG. Thereby, the whole width direction (left-right direction in FIG. 3) in the yarn passage 8C can be effectively cleaned. The moving member 31B may be moved continuously in the section L, or may be moved intermittently. Similarly, the air injection unit 33 may continuously inject compressed air in the section L, or intermittently inject compressed air.

  The air injection unit 33 is fixed to the side closer to the support shaft 31A than the tip of the moving member 31B. The air injection unit 33 is arranged so that the injection port 33A is positioned in front of the yarn passage 8C in the yarn monitoring device 8 when the moving member 31B rotates to the capture position P2. The direction D1 in which the air injection unit 33 injects compressed air into the yarn passage 8C is different from the direction D2 in which the air injection device 18 injects compressed air into the yarn passage 8C.

  As shown in FIG. 2, the suction mouth 38 is rotatably supported by the support shaft 38 </ b> A, and captures the yarn Y from the winding device 13 and guides it to the yarn joining device 37. The yarn joining device 37 performs yarn joining between the guided yarns Y. The yarn joining device 37 is a splicer that uses compressed air, a piecer that uses seed yarn, or a knotter that mechanically joins the yarn Y.

  The 1st air supply source 39 supplies compressed air to the air injection part 33 via the air supply hose 33B (refer FIG. 4). The yarn joining cart control unit 3A executes various control processes in the yarn joining cart 3.

  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 take-up drum 22, and the package P is reversely rotated by the reverse rotation roller 36 provided in the yarn splicing carriage 3. It is done.

  The machine base control device E performs control processing in the air injection unit 33 and the air injection device 18. For example, when the generation operation of the yarn Y in the pneumatic spinning device 7 is stopped, that is, when the unit controller 70 determines that there is an abnormality based on the detection result of the yarn monitoring device 8 and / or the tension sensor 9, or for some reason the yarn Y is When it is cut, the air injection unit 33 and the air injection device 18 are operated. Specifically, the machine base control device E operates the air injection unit 33 after operating the air injection device 18.

  The doffing cart 4 performs a bobbin setting operation in which the bobbin B is supplied to the cradle arm 21 to prepare for winding the yarn Y, and a doffing operation in which the fully packaged package P is removed from the cradle arm 21. . The doffing cart 4 mainly includes a bobbin supply mechanism 41, a suction pipe 43, a package transport mechanism 47, and a doffing cart control unit 4A.

  The bobbin supply mechanism 41 receives the bobbin B from the bobbin accommodating portion, and rotates the bobbin B while holding the bobbin B, thereby supplying the bobbin B to the cradle arm 21. The package transport mechanism 47 receives the package P from the cradle arm 21 and transports the received package P to the discharge unit. The suction pipe 43 captures the yarn Y of the yarn Y generated in the pneumatic spinning device 7 by suction and guides the captured yarn Y to the winding device 13. The doffing cart control unit 4 </ b> A executes various control processes in the doffing cart 4.

  Next, a cleaning operation of the yarn passage 8C of the yarn monitoring device 8 by the air injection device 18 and the air injection unit 33, which is a characteristic part of the present embodiment, will be described with reference to FIG. When the unit controller 70 determines that there is an abnormality based on the detection result of the yarn monitoring device 8 and / or the tension sensor 9, the spinning unit 2 cuts the yarn Y. Specifically, the unit controller 70 stops supplying air to the pneumatic spinning device 7 and interrupts the generation of the yarn Y.

  Next, the unit controller 70 sends a yarn defect detection signal to the machine control device E. Receiving the yarn defect detection signal, the machine base control device E sends a control signal to the yarn splicing cart control unit 3A, and causes the yarn splicing cart 3 to travel to the target spinning unit 2. The machine base control device E controls the second air supply source 18C simultaneously with the traveling control of the yarn joining cart 3, and starts the injection of compressed air into the yarn passage 8C in the air injection device 18.

  Next, when the yarn splicing carriage 3 reaches the target spinning unit 2, the machine base control device E controls the second air supply source 18 </ b> C to end the injection of the compressed air by the air injection device 18. Next, the machine base control device E causes the yarn joining cart 3 to start the yarn joining operation via the yarn joining cart control unit 3A. That is, the machine base control device E rotates the suction pipe 31 to the capture position P2 (see FIG. 4) via the yarn splicing cart control unit 3A. At this time, the machine base control device E controls the first air supply source 39 such that the air injection unit 33 injects compressed air into the yarn passage 8C while moving along the traveling direction V. Specifically, as shown in FIG. 4, the machine base control device E controls the first air supply source 39 so as to inject compressed air into the yarn passage 8 </ b> C while moving in the section L. That is, the machine base control device E starts the injection of compressed air at the same time that the air injection unit 33 enters the section L, and ends the injection of the compressed air at the same time as it exits from the section L.

  When the yarn splicing operation in the yarn splicing carriage 3 is completed, the unit controller 70 operates the pneumatic spinning device 7 and the like again to resume the winding of the package P in the spinning unit 2.

  The effect of the spinning machine 1 of the said embodiment is demonstrated. In the spinning machine 1 of the above embodiment, the air injection unit 33 cleans the yarn monitoring device 8 while moving along the traveling direction V as shown in FIG. can do. As a result, foreign matters can be removed more effectively. In the spinning machine 1 of the above embodiment, the air injection unit 33 cleans the yarn passage 8C extending in the direction of the yarn path R1 while moving in the traveling direction V. As a result, the entire yarn passage 8C can be cleaned.

  In the spinning machine 1 of the above-described embodiment, the foreign matter adhering to and / or floating on the yarn path 8C can be removed by the air injection device 18 provided separately from the air injection unit 33. Since the compressed air is injected from different directions by the air injection unit 33 and the air injection device 18, foreign substances can be removed in a wider range. In the spinning machine 1 of the above-described embodiment, the foreign matter adhering to and / or floating in the yarn passage 8C is first removed from the yarn passage 8C, and then the foreign matter is removed from the vicinity of the yarn passage 8C. Accordingly, it is possible to effectively perform cleaning, for example, it is possible to prevent foreign matter and the like from entering the back of the yarn passage 8C by the action of the air injection unit 33.

  In the spinning machine 1 of the above embodiment, since the air injection unit 33 is disposed on the moving member 31B that moves the yarn end capturing unit 32, it is not necessary to provide a dedicated moving member for moving the air injection unit 33. Further, in the spinning machine 1 of the above embodiment, the movement path P0 for moving the yarn end catching portion 32 from the standby position P1 to the catching position P2 is set so as to pass near the yarn monitoring device 8. For this reason, the air injection part 33 can be accurately moved to the front of the yarn monitoring device 8 to be cleaned.

  In the spinning machine 1 of the present embodiment, the air injection unit 33 uses the compressed air from the dedicated first air supply source 39 provided in the yarn splicing carriage 3 to inject. For this reason, compared with injecting using the compressed air from the gas supply source with which the some spinning unit 2 is provided in common, compressed air can be injected more strongly.

  In the spinning machine 1 of the present embodiment, the yarn monitoring device 8 is arranged between the pneumatic spinning device 7 and the yarn storage device 11. For this reason, foreign matters such as fiber scraps (oil agent and dye powder depending on the fiber bundle) generated in the air spinning device 7 are likely to adhere and / or float in and around the yarn passage 8C of the yarn monitoring device 8. In the spinning machine 1 having such a configuration, the air injection unit 33 moves along the traveling direction, and the foreign matter can be effectively removed by cleaning the yarn monitoring device 8 during the movement along the traveling direction. .

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

<Modification 1>
In the spinning machine 1 of the above-described embodiment, the air injection device 18 that injects the compressed air into the yarn passage 8C of the yarn monitoring device 8 has been described as an example provided separately from the air injection unit 33. It is not limited. Even if the air injection device 18 is not provided, the yarn monitoring device 8 can be cleaned in a wider range by cleaning the yarn monitoring device 8 while the air injection unit 33 moves along the yarn path R1. Moreover, the structure which is not provided with the air injection apparatus 18 in the spinning unit 2, and the injection part which injects compressed air into the yarn channel | path 8C in the yarn monitoring apparatus 8 may be provided.

<Modification 2>
In the spinning machine 1 of the above-described embodiment, the example in which the air injection unit 33 that injects compressed air in the yarn passage 8C and the vicinity thereof is provided in the yarn joining cart 3 has been described, but the present invention is not limited thereto. For example, the air injection unit that injects compressed air to the yarn passage 8C and the vicinity thereof may be provided for each spinning unit 2 instead of the yarn joining cart 3. In other words, the spinning unit 2 may be provided with a moving member that moves the air injection unit along the yarn path R1 between a first position and a second position different from the first position. Further, a suction pipe (moving member) in which a yarn joining device, a yarn end catching portion that catches the yarn end, and a cleaning portion that cleans the yarn monitoring device are arranged for each spinning unit 2 without providing the yarn joining cart 3. ) And may be provided. In this case, an air supply source that supplies compressed air to the air injection unit may be provided for each spinning unit 2 or may be provided in common to the plurality of spinning units 2.

<Modification 3>
In the spinning machine 1 of the above-described embodiment, the example in which the doffing carriage 4 is provided has been described. However, the present invention is not limited thereto, and a spinning machine without the doffing carriage 4 may be used. Further, an air injection unit that injects compressed air into the yarn passage 8C and the vicinity thereof may be provided in the doffing carriage (work carriage) 4. That is, compressed air (gas) is injected into the yarn passage 8C while moving along the yarn path R1 to the suction pipe (moving member and yarn end catching portion) provided in the doffing carriage 4, and the yarn passage 8C and the vicinity thereof. You may provide the cleaning part which cleans the foreign material adhering to and / or floating. The air injection unit may be provided on both the yarn joining cart 3 and the doffing cart 4.

<Modification 4>
In the spinning machine 1 of the above embodiment, an example in which an air injection unit 33 that injects compressed air is provided as a cleaning unit that cleans the yarn path 8C and its vicinity while moving along the yarn path R1 along which the yarn Y travels. Although described above, the present invention is not limited to this. For example, as a cleaning unit that cleans the yarn passage 8C and the vicinity thereof, a suction portion that sucks foreign matter may be provided, or a wiping portion that wipes off the foreign matter attached to the yarn passage 8C and the vicinity thereof may be provided.

<Modification 5>
In the spinning machine 1 of the above embodiment, the machine base control device E has been described by taking the example in which the air injection unit 33 is operated after the air injection device 18 is operated, but the present invention is not limited to this. For example, the machine base control device E may operate the air injection unit 33 after operating the air injection device 18. Moreover, the time slot | zone which each of the air injection apparatus 18 and the air injection part 33 is act | operating may overlap at least partially. Specifically, the air injection device 18 and the air injection unit 33 may be operated simultaneously for the same length of time. In addition, after one of the air injection device 18 and the air injection unit 33 starts injection of compressed air, the other may start injection of compressed air, and then stop the injection of one compressed air first.

<Modification 6>
In the spinning machine 1 of the above embodiment, the yarn monitoring device 8 has been described with reference to an example in which the yarn monitoring device 8 is disposed between the pneumatic spinning device 7 and the yarn storage device (yarn drawing device) 11. However, the present invention is not limited thereto. It is not limited. For example, the present invention may be applied to a spinning machine having a configuration in which the yarn monitoring device 8 is disposed downstream of the yarn storage device 11.
<Other variations>

  The yarn monitoring device is not limited to the configuration of the yarn monitoring device 8 in the above-described embodiment. In the above embodiment, when one light emitting element 81 and one light receiving element 82 are set as one set, an example in which one set (one step) is provided in the traveling direction of the yarn Y has been described. Two sets (two steps) may be provided in the traveling direction. In the above embodiment, an example in which one light emitting element 81 and one light receiving element 82 are provided as one set has been described. However, the number of light emitting elements and light receiving elements may be changed. Good. Moreover, although the said embodiment demonstrated and demonstrated the example of the optical detection part, the thread | yarn monitoring apparatus 8 may be provided with the detection parts of other systems, such as an electrostatic capacitance type detection part, for example.

  In the spinning machine 1 of the above-described embodiment, the example in which each device is arranged so that the yarn Y supplied on the upper side is wound on the lower side in the machine height direction has been described. However, each device may be arranged so that the yarn supplied on the lower side is wound up on the upper side. In this case, for example, an air injection unit that injects compressed air to the yarn passage 8C and the vicinity thereof can be provided in the yarn joining cart that travels in the upper part of the machine base.

  The pneumatic spinning device may further include a needle that is held by the fiber guide and arranged to protrude into the spinning chamber in order to prevent the twist of the fiber bundle from being transmitted to the upstream side of the pneumatic spinning device. . Further, the pneumatic spinning device may be configured to 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 such a needle. Furthermore, the pneumatic spinning device may include a pair of air jet nozzles that twist in opposite directions to each other instead of the above configuration.

  In addition to the function of sucking and capturing the yarn end, the suction pipe 31 may have a twisting member that twists the captured yarn end with an air flow. In this case, three hoses are externally attached to the suction pipe.

  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 may be drawn from the pneumatic spinning device 7 by a delivery roller and a nip roller. In this case, the yarn accumulating device 11 may be provided downstream of 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 flow may be provided instead of the yarn accumulating device 11. The yarn monitoring device 8 may be disposed at a position on the upstream side or the downstream side with respect to the delivery, the roller, and the nip roller as long as the yarn monitoring device 8 is located on the downstream side of the pneumatic spinning device 7.

  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 5B (that is, common to the plurality of spinning units 2). However, each part of the spinning unit 2 (for example, a draft device, a 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. One unit controller 70 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.

  DESCRIPTION OF SYMBOLS 1 ... Spinning machine, 2 ... Spinning unit, 3 ... Yarn splicing cart (working cart), 4 ... Doffing cart, 6 ... Draft device, 7 ... Pneumatic spinning device, 8 ... Yarn monitoring device, 8C ... Yarn passage, 11 ... Yarn accumulating device (yarn drawing device), 18 ... Air injection device, 31 ... Suction pipe, 31B ... Moving member, 32 ... Yarn end catching portion, 33 ... Air injection portion (cleaning portion), 39 ... First air supply source ( (Gas supply source), 70 ... unit controller, E ... machine base control device, P1 ... standby position, P2 ... capture position, R1 ... yarn path, Y ... yarn, V ... traveling direction.

Claims (9)

A spinning device that twists the fiber bundle to produce a yarn;
A yarn monitoring device that monitors the state of the yarn based on information detected by a detection unit that detects the state of the traveling yarn;
A cleaning unit that moves along the traveling direction in which the yarn travels, and that cleans the yarn monitoring device in the middle of the movement along the traveling direction;
Spinning machine equipped with.   The yarn monitoring device includes a yarn passage forming unit that forms a yarn passage for allowing the traveling yarn to pass therethrough, and the detection unit detects the yarn traveling in the yarn passage. The spinning machine according to 1. An injection unit that is provided separately from the cleaning unit and injects gas into the yarn passage;
The spinning machine according to claim 2, further comprising a control unit that operates the cleaning unit and the injection unit when the yarn generating operation of the spinning device is stopped.   The said cleaning part cleans the said thread | yarn monitoring apparatus by injecting gas to the said thread | yarn path, and the said injection part injects gas in the direction different from the direction in which the said cleaning part injects gas. The spinning machine described.   The spinning machine according to claim 3 or 4, wherein the control unit operates the cleaning unit after operating the injection unit. A yarn end catching portion for catching a yarn end of the yarn generated in the spinning device;
A moving member for moving the yarn end catching portion between the standby position and the catching position for catching the yarn end along the traveling direction;
The spinning machine according to any one of claims 1 to 5, wherein the cleaning unit is disposed on the moving member. A plurality of spinning units each including the spinning device, the yarn monitoring device, and a winding unit that winds the yarn supplied from the spinning device as a package;
A working carriage provided movably with respect to at least a part of the spinning units of the plurality of spinning units;
Further comprising
The spinning machine according to claim 6, wherein the work carriage includes the moving member and a gas supply source that supplies gas to the cleaning unit. A yarn drawing device for drawing out the yarn generated in the spinning device;
The spinning machine according to any one of claims 1 to 7, wherein the yarn monitoring device is disposed between the spinning device and the yarn drawing device. A working carriage used in a spinning machine including a yarn monitoring device that monitors a state of a yarn generated in the spinning device,
A yarn end catching portion for catching the yarn end of the yarn;
A moving member that moves the yarn end catching portion along a traveling direction in which the yarn travels between a standby position and a catching position for catching the yarn end;
A cleaning unit that is disposed on the moving member, and that cleans the yarn monitoring device in the middle of movement along the traveling direction;
A work cart comprising:

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