JP2014105415A - Cleaning device of draft machine, draft machine, and spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device of a draft machine capable of sucking and removing a fiber waste and the like attached to a cleaning surface of a cleaner belt at a small suction flow rate.SOLUTION: The cleaning device of a draft machine includes: a cleaner belt 70 for cleaning a to-be-cleaned object being a peripheral surface of draft rollers RB1 and RT1 of a draft machine D and/or an outer peripheral surface of an apron belt E of the draft machine D by bringing a cleaning surface 70A into contact with the to-be-cleaned object; a cover 62 installed adjacent to the cleaning surface 70A of the cleaner belt 70 and having an opposite surface to be opposed to the cleaning surface; a first suction port 63 formed on the opposite surface of the cover 62 and having an opening width smaller than a width of the cleaner belt 70; and a suction source for applying a suction force to the first suction port 63.

Description

  The present invention relates to a technique for cleaning a draft device, a draft device, and a spinning machine.

  2. Description of the Related Art Conventionally, a spinning unit or a spinning machine that produces a spun yarn by drafting a fiber bundle with a draft device and twisting the drafted fiber bundle is known. The draft device includes a plurality of draft rollers, and drafts the fiber bundle by rotating the draft rollers at different speeds.

  In the draft device, fiber scraps (fluff) and the like are generated from the fiber bundle. For example, when the raw material of the fiber bundle is cotton, cotton sugar adheres to the peripheral surface of the draft roller, and when the raw material of the fiber bundle is chemical fiber, the oil agent adheres to the peripheral surface of the draft roller. Further, the fiber waste is wound up by the accompanying flow generated with the rotation of the draft roller. If foreign matter such as cotton sugar or oil agent adheres to the peripheral surface of the draft roller and fiber waste is wound around, it may cause fine yarn unevenness and / or yarn breakage. Therefore, a cleaning device having a cleaner belt has been conventionally known in order to clean foreign matter and / or fiber waste adhering to the peripheral surface of the draft roller.

  In the cleaning device provided with the cleaner belt, the removed fiber waste adheres to the cleaner belt, and therefore it is necessary to remove the fiber waste attached to the cleaner belt. In a conventional cleaning device, fiber waste or the like attached to the cleaner belt is removed by bringing a roller provided with a raised brush into contact with the cleaner belt. However, since the removed fiber waste and the like are accumulated in the raised brush without being removed, a maintenance operation is required in which the operator periodically removes the fiber waste and the like accumulated in the raised brush. This maintenance work has to be performed frequently depending on the type of fiber bundle and the like, which has been a burden on the operator. Moreover, if this maintenance work is not performed, fiber wastes and the like of the draft roller will not be removed, and fiber wastes and the like will accumulate in the vicinity of the draft device, leading to deterioration in operability.

  On the other hand, as a cleaning method of the cleaner belt, a method of removing fiber waste and the like attached to the cleaner belt by suction is known. For example, Patent Document 1 discloses a cleaning device that sucks fiber waste or the like attached to a cleaner belt with a suction nozzle. However, in the cleaning device described in Patent Document 1, a belt knitted from nylon is used as a cleaner belt. Since fiber scraps and the like are firmly attached to such a cleaner belt, the suction nozzle needs to be provided so that the entire width of the cleaner belt can be directly sucked. For this reason, the suction nozzle of patent document 1 has the suction port which can attract | suck the width direction whole region of a cleaner belt. Further, since the suction port is large, a strong suction source is required to secure the suction force.

  Further, for example, Patent Document 2 discloses a cleaning device in which the suction port of the suction pipe is disposed in the vicinity of the cleaner belt. Patent Document 2 does not disclose a specific shape or the like of the suction port.

U.S. Pat. No. 4,317,261 JP 2009-13548 A

  The present invention has been made to solve the above problems. An object of the present invention is to provide a cleaning device for a draft device, a draft device, and a spinning machine capable of sucking and removing fiber dust and the like adhering to the cleaning surface of the cleaner belt with a small suction flow rate.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

That is, the cleaning device for the draft device of the first invention is:
A cleaner belt, a cover, a first suction port, and a suction source are provided.
The cleaner belt cleans the cleaning target by bringing the cleaning surface into contact with the cleaning target that is the peripheral surface of the draft roller of the draft device and / or the outer peripheral surface of the apron belt.
The cover is disposed in the vicinity of the cleaning surface of the cleaner belt and has a facing surface that faces the cleaning surface.
The first suction port is formed on the facing surface of the cover and has an opening width smaller than the width of the cleaner belt.
The suction source applies a suction force to the first suction port.

The cleaning device for the draft device of the second invention is the cleaning device for the draft device of the first invention,
The shape of the first suction port is circular, and the diameter is 5 mm or more and 6 mm or less.

The cleaning device for the draft device of the third invention is the cleaning device for the draft device of the first or second invention,
The facing surface of the cover is arranged away from the cleaning surface of the cleaner belt within a range of 1 mm or more and 2 mm or less.

A cleaning device for a draft device according to a fourth invention is the cleaning device for a draft device according to the first to third inventions,
An adjustment unit is provided for adjusting the position of the first suction port with respect to the cleaning surface of the cleaner belt.

The cleaning device for the draft device of the fifth invention is the cleaning device for the draft device of the first to fourth inventions,
The cleaner belt is made of rubber, and the cleaning surface is formed smoothly.

The cleaning device for the draft device of the sixth invention is the cleaning device for the draft device of the first to fifth inventions,
A suction conveyance tube for connecting the first suction port and the suction source is provided.
At least a part of the suction conveyance tube is formed of a transparent or translucent material.

  According to a seventh aspect of the present invention, a draft device includes the draft device cleaning device according to the first to sixth aspects.

The draft device of the eighth invention is the draft device of the seventh invention,
A plurality of roller pairs including a top roller and a bottom roller are provided along the traveling direction of the fiber bundle.
The cleaning surface of the cleaner belt is disposed so as to contact the top roller of the roller pair excluding the roller pair on the most downstream side in the traveling direction of the fiber bundle.

The draft device of the ninth invention is the draft device of the eighth invention,
A second suction port corresponding to the top roller of the most downstream roller pair in the traveling direction of the fiber bundle is provided.
A suction force is applied to the second suction port by a suction source.

  A spinning machine according to a tenth aspect of the present invention includes seventh to ninth draft devices, an air spinning device, and a winding device.

  According to the cleaning device, draft device, and spinning machine of the draft device of the present invention, it is possible to suck and remove the fiber waste adhering to the cleaning surface of the cleaner belt with a small suction flow rate. Can be prevented from being wound.

1 is a front view of a spinning machine M according to Embodiment 1 of the present invention. The side view of the spinning unit U is simplified. FIG. 2 is a side view of the draft device D according to the first embodiment of the present invention in a state where the draft device D is in the draft position. 1 is a perspective view of a cleaning device 60 according to Embodiment 1 of the present invention. (A) The figure of the state which the draft apparatus D exists in a draft position seen from the arrow A direction of FIG. 3 Similarly, the figure of the state which the draft apparatus D exists in a non-draft position. The side view of the draft apparatus D of another example.

  Next, embodiments of the invention will be described with reference to the drawings.

  A cleaning device 60 for a draft device according to a first embodiment of the present invention, and a draft device D and a spinning machine M including the same will be described with reference to FIGS.

  First, an outline of the spinning machine M will be described. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling direction of the fiber bundle F and the spun yarn Y.

  As shown in FIGS. 1 and 2, the spinning machine M includes a plurality of spinning units U, a yarn splicing cart 3, a blower box 4, and a prime mover box 5. Each spinning unit U mainly includes a draft device D, an air spinning device 11, a yarn clearer 12, a yarn slack eliminating device 13, and a winding device 21.

  As shown in FIG. 2, the draft device D drafts the fiber bundle F supplied via a trumpet T from a can (not shown) disposed at the rear of the spinning unit U. The draft device D according to the present embodiment includes a plurality of roller pairs R whose feed speed is gradually increased from the upstream side to the downstream side of the fiber bundle F. The roller pair R includes top rollers RB1, RT1, RM1, and RF1 and bottom rollers RB2, RT2, RM2, and RF2 (see FIG. 3). The draft device D will be described in detail later.

  The air spinning device 11 twists the fiber bundle F by using the swirling airflow to generate the spun yarn Y. The pneumatic spinning device 11 includes a fiber guide portion, a swirl flow generating nozzle, and a hollow guide shaft body, although detailed description and illustration are omitted. The fiber guide unit guides the fiber bundle F sent from the draft device D to a spinning chamber formed inside the pneumatic spinning device 11. The swirl flow generating nozzle is disposed around the path of the fiber bundle F and generates a swirl flow in the spinning chamber. By this swirl flow, the fiber ends of the fiber bundles F in the spinning chamber are reversed and swirled. The hollow guide shaft body guides the spun yarn Y spun from the spinning chamber to the outside of the pneumatic spinning device 11. The driving and stopping of the pneumatic spinning device 11 are controlled by a unit controller (not shown). The air spinning device 11 is an air spinning device that does not have a needle-like member and realizes the function of the needle-like member by the downstream end of the fiber guide portion, or a pair of air jet nozzles that twist in opposite directions. The air spinning device may be used.

  The yarn clearer 12 monitors the thickness of the spun yarn Y sent out from the pneumatic spinning device 11. When the yarn clearer 12 detects a yarn defect of the spun yarn Y, it transmits a yarn defect detection signal to a unit controller (not shown).

  The yarn slack eliminating device 13 pulls the spun yarn Y from the pneumatic spinning device 11 by applying a predetermined tension to the spun yarn Y. Further, the yarn slack eliminating device 13 adjusts the tension of the spun yarn Y so that the fluctuation of the tension on the winding device 21 side is not transmitted to the pneumatic spinning device 11 side. When working with the yarn splicing carriage 3, the yarn slack eliminating device 13 retains the spun yarn Y sent from the pneumatic spinning device 11 and prevents the spun yarn Y from slackening.

  The winding device 21 winds the spun yarn Y sent from the pneumatic spinning device 11 and forms a package P. The winding device 21 includes a cradle arm 22, a winding drum 23, and a traverse device 24. The cradle arm 22 rotatably supports the package P (bobbin). The winding drum 23 contacts the outer peripheral surface of the package P (bobbin) and rotates the package P (bobbin). The traverse device 24 traverses the spun yarn Y. The winding device 21 rotates the winding drum 23 while traversing the spun yarn Y by the traverse device 24, thereby rotating the package P (bobbin) and winding the spun yarn Y.

  When the unit controller receives the yarn defect detection signal from the yarn clearer 12, the unit controller immediately cuts the spun yarn Y with the cutter 14, and further stops the draft device D, the air spinning device 11, and the like. The unit controller sends a control signal to the yarn splicing carriage 3 and travels to the front of the spinning unit U. Thereafter, the unit controller drives the pneumatic spinning device 11 and the like again, causes the yarn joining cart 3 to perform yarn joining, and causes the winding device 21 to resume winding. The spinning unit U may not include the cutter 14 and may stop the generation of the spun yarn Y and stop the spun yarn Y by stopping the supply of air to the pneumatic spinning device 11.

  As illustrated in FIGS. 1 and 2, the yarn splicing cart 3 includes a cart unit 25, a splicer 26 loaded on the cart unit 25, a suction pipe 27, and a suction mouth 28. The yarn splicing carriage 3 travels to the spinning unit U when the yarn breakage or the yarn cutting occurs in a spinning unit U. The suction pipe 27 sucks and captures the yarn end fed from the pneumatic spinning device 11 and guides it to the splicer 26. The suction mouse 28 sucks and picks up the yarn end from the package P and guides it to the splicer 26. The splicer 26 performs yarn splicing between the guided yarn ends.

  The blower box 4 has a blower (suction source) disposed therein. The blower box 4 is connected to a main pipe 91 (see FIG. 3) which is a suction conveyance pipe common to the spinning units U. The main pipe 91 is arranged at the rear part (upstream side in the draft direction) of each spinning unit U. The blower box 4 sucks, conveys, and collects fiber waste generated in each spinning unit U through the main pipe 91.

  In the prime mover box 5, a motor that is a prime mover of the spinning machine M, a speed reducer for transmitting power to each part of the spinning machine M, and the like are disposed inside.

  Next, the draft device D will be described in detail. As shown in FIGS. 3 to 5, the draft device D includes a plurality of roller pairs R, a cradle 31, a device frame 32, a cleaning device 60, and a suction unit 41.

  As shown in FIG. 3, as the plurality of roller pairs R, in this embodiment, a back roller pair RB, a third roller pair RT, a middle roller pair RM, and a front roller pair RF are provided. The middle roller pair RM has an apron belt E. These roller pairs RB, RT, RM, and RF are arranged at a predetermined interval from upstream to downstream in the traveling direction of the fiber bundle F. Each roller pair RB, RT, RM, and RF is composed of an upper top roller RB1, RT1, RM1, RF1 and a lower bottom roller RB2, RT2, RM2, RF2. The bottom rollers RB2, RT2, RM2, and RF2 are drive rollers. The top rollers RB1, RT1, RM1, and RF1 are driven rollers that rotate in contact with the bottom rollers RB2, RT2, RM2, and RF2. The rotational speed of each roller pair RB, RT, RM, and RF increases gradually from the upstream side toward the downstream side. An air spinning device 11 is disposed on the downstream side of the front roller pair RF.

  The back top roller RB1, the third top roller RT1, the middle top roller RM1, and the front top roller RF1 are integrally and rotatably mounted on the cradle 31. The top rollers RB1, RT1, RM1, and RF1 of two adjacent spinning units U are mounted on the cradle 31 (see FIG. 1). The back bottom roller RB2, the third bottom roller RT2, the middle bottom roller RM2, and the front bottom roller RF2 are mounted on the apparatus frame 32 corresponding to the top rollers RB1, RT1, RM1, and RF1 of the cradle 31, respectively. .

  The cradle 31 is rotatable with respect to the apparatus frame 32 around a rotation shaft 33 provided on the upstream side. Therefore, by rotating the cradle 31, the top rollers RB1, RT1, RM1, and RF1 come in contact with and separate from the bottom rollers RB2, RT2, RM2, and RF2. A position where the cradle 31 is closed and the top rollers RB1, RT1, RM1, and RF1 are in contact with the bottom rollers RB2, RT2, RM2, and RF2, respectively, is a draft position. For maintenance or the like, the cradle 31 is opened, and the positions where the top rollers RB1, RT1, RM1, and RF1 are separated from the bottom rollers RB2, RT2, RM2, and RF2, respectively, are set as non-draft positions. Therefore, the cradle 31 can switch the top rollers RB1, RT1, RM1, and RF1 and the bottom rollers RB2, RT2, RM2, and RF2 between the draft position and the non-draft position.

  The turning operation of the cradle 31 is performed by the operator operating the handle 34. When the cradle 31 is closed and the roller pair R is in the draft position, the hook portion 35 at the lower end of the handle 34 is engaged with the fixed roller 36 on the apparatus frame 32 side, and the top rollers RB1, RT1, RM1, And the pressure contact state of RF1 and each of the bottom rollers RB2, RT2, RM2, and RF2 is maintained.

  Since the distance between each roller pair RB, RT, RM, RF is determined by the fiber length of the fiber bundle F to be drafted, it is reviewed each time the type of the fiber bundle F as the raw material is changed. Therefore, among the bottom rollers RB2, RT2, RM2, and RF2, the middle bottom roller RM2 and the front bottom roller RF2 are fixed to the apparatus frame 32, but the back bottom roller RB2 and the third bottom roller RT2 are respectively The position can be changed upstream and downstream with respect to the frame 32.

  The cleaning device 60 is a device that cleans the peripheral surface of the draft roller. In the present embodiment, the cleaning device 60 is configured to clean the peripheral surface of the apron belt E wound around the back top roller RB1, the third top roller RT1, and the middle top roller RM1. The cleaning device 60 mainly includes a frame 61, a cleaner belt 70, a cover 62, a first suction port 63, and an adjustment unit 64.

  The frame 61 forms a base of the cleaning device 60. The frame 61 is fixed to the side surface of the cradle 20. A first roller 71 and a second roller 72 are rotatably supported on the frame 61. The first roller 71 is provided close to the middle top roller RM1. The second roller 72 is provided on the upstream side of the back top roller RB1. An urging lever 74 is rotatably attached to the frame 61. A tension roller 73 is rotatably supported at the tip of the urging lever 74.

  The cleaner belt 70 has the cleaning surface 70A brought into contact with the cleaning target, which is the outer peripheral surface of the back top roller RB1, the third top roller RT1, and the apron belt E, and the back top roller RB1, the third top roller RT1, and the apron belt E. It is a member that cleans the surface (object to be cleaned). The cleaner belt 70 is an endless belt-like member. The cleaner belt 70 is wound around the first roller 71, the second roller 72, and the tension roller 73. An urging spring (not shown) is attached to the urging lever 74 and urges the urging lever 74 in a direction in which tension is applied to the cleaner belt 70.

  The cleaner belt 70 is made of rubber. A cleaning surface 70 </ b> A that is an outer peripheral surface of the cleaner belt 70 is formed smoothly. For this reason, fiber scraps and the like adhering to the surfaces of the back top roller RB1, the third top roller RT1, and the apron belt E are removed by the cleaning surface 70A of the cleaner belt 70, but the fiber scraps and the like are cleaned by the cleaning surface 70A of the cleaner belt 70. Does not adhere firmly. This is because fiber scraps and the like are removed by friction of the rubber material of the cleaner belt 70, and the fiber scraps and the like are not entangled. For this reason, the fiber waste etc. which adhered by sucking the cleaning surface 70A of the cleaner belt 70 by the 1st suction port 63 mentioned later can be removed easily.

  A gear member 75 having a plurality of gear teeth is fixed to the first roller 71. A boss portion 76 is provided in the axial direction of the middle top roller RM1. A rotating protrusion 77 protrudes from the boss portion 76 in the radial direction. The rotation protrusion 77 is configured such that the tip can engage with the teeth of the gear member 75.

  The rotation protrusion 77 rotates together with the middle top roller RM1, and engages with the gear member 75 fixed to the first roller 71 every rotation, thereby rotating the gear member 75 by one tooth. As a result, the first roller 71 is rotated, and the cleaner belt 70 is fed by a predetermined length. As a result, every time the middle top roller RM1 rotates, a new cleaning surface 70A of the cleaner belt 70 comes into contact with the back top roller RB1, the third top roller RT1, and the apron belt E.

  With the above configuration, the back top roller RB1, the third top roller RT1, and the apron belt E rotate with their surfaces in contact with the cleaner belt 70. As a result, fiber scraps and the like attached to the surfaces of the back top roller RB1, the third top roller RT1, and the apron belt E can be removed by the cleaner belt 70.

  Next, a configuration for sucking and removing fiber dust and the like attached to the cleaning surface 70A of the cleaner belt 70 will be described.

  The cover 62 is a member installed close to the cleaning surface 70 </ b> A of the cleaner belt 70. In this embodiment, the cover 62 is a metal plate having a substantially circular cross section in a direction parallel to the cleaning surface 70 </ b> A, and the diameter is slightly narrower than the width of the cleaner belt 70. The cover 62 has a facing surface (the lower surface in the drawing) facing the cleaning surface 70A of the cleaner belt 70. A first suction port 63 is provided on the facing surface of the cover 62. The first suction port 63 is an opening having an opening width smaller than the width of the cleaner belt 70. A connection portion 82 that communicates with the first suction port 63 is formed on the opposite side (the upper surface side in the drawing) of the cover 62. A first suction transfer pipe 81 is inserted into the connection portion 82, and the first suction transfer pipe 81 is connected to the first suction port 63. The first suction transfer pipe 81 uses a transparent resin pipe that allows the inside to be visually observed. The first suction transfer pipe 81 is connected to a blower (suction source) via a third suction transfer pipe 44 and a main pipe 91 which are common to a second suction port 42 described later. The blower (suction source) applies a suction force to the first suction port 63. The main pipe 91 is piped behind the spinning unit U and is a suction conveyance pipe common to the spinning units U. The main pipe 91 is connected to the blower (suction source) of the blower box 4.

  Since the first suction port 63 is provided on the cover 62 installed in the vicinity of the cleaning surface 70A of the cleaner belt 70, the suction force of the first suction port 63 is the cleaning surface 70A of the cleaner belt 70. This extends not only to the range facing the first suction port 63 but also to the range facing the cover 62. This is because the air flow generated by the suction force of the first suction port 63 is generated between the cleaning surface 70 </ b> A of the cleaner belt 70 and the cover 62, and the fiber dust or the like adhering to this region is removed from the first suction port 63. It is because it is thought that is sucked.

  Here, it is preferable that the cover 62 be disposed so that the facing surface is within a range of 1 mm or more and 2 mm or less from the cleaning surface 70 </ b> A of the cleaner belt 70. This is because when the cover 62 is brought into contact with the cleaning surface 70A of the cleaner belt 70, the cleaning surface 70A of the cleaner belt 70 is worn. In addition, if the cover 62 is separated from the cleaning surface 70A of the cleaner belt 70 by 3 mm, it becomes difficult to suck and remove the fiber waste adhering to the cleaning surface 70A of the cleaner belt 70.

  Although the 1st suction port 63 was formed in the approximate center position of the cover 62, it is not limited to this position. Most of the fiber scraps and the like adhering to the cleaning surface 70A of the cleaner belt 70 are attached not to the entire area in the width direction of the cleaning surface 70A but to a region having a predetermined width. This corresponds to the passage route of the fiber bundle F passing through the back top roller RB1, the third top roller RT1, and the apron belt E. For this reason, it is preferable that the 1st suction port 63 is set as the position corresponding to the area | region where fiber waste etc. tend to adhere among 70 A of cleaning surfaces of the cleaner belt 70. FIG. In addition, although the shape of the cover 62 was circular, it is not limited to this. For example, the shape of the cover 62 may be substantially circular or elliptical.

  The shape of the first suction port 63 is circular. The diameter of the first suction port 63 is preferably 5 mm or more and 6 mm or less. This is because fiber scraps clog the first suction port 63 when the diameter of the first suction port 63 is, for example, 4 mm or less. If the diameter of the first suction port 63 is, for example, 7 mm or more, it is necessary to make the blower (suction source) strong in order to secure the suction force.

  The adjustment unit 64 is a member that adjusts the position of the first suction port 63 with respect to the cleaning surface 70 </ b> A of the cleaner belt 70. In the present embodiment, the adjustment unit 64 can adjust the distance of the first suction port 63 with respect to the cleaning surface 70 </ b> A of the cleaner belt 70. The adjustment unit 64 includes a fixed lever 65 and a support unit 66. One end of the fixing lever 65 is fixed to the frame 61. The other end portion of the fixing lever 65 is bent in a substantially L shape, and two through holes for fixing the support portion 66 are formed at the end portion. The long hole 67 that is one through hole is formed on a virtual arc centered on the other through hole. Instead of adjusting the position of the first suction port 63 by moving the support unit 66 in an arc, the adjustment unit 64 slides the support unit 66 in a straight line to adjust the position of the first suction port 63. Good.

  The support portion 66 is an L-shaped member for fixing the cover 62 to the fixing lever 65. A through hole is formed in the support portion 66 at a position corresponding to the two through holes formed in the fixed lever 65. The support portion 66 is fixed to the fixing lever 65 by bolts 68 and 69. By adjusting the position of the bolt 69 with respect to the long hole 67, the position of the cover 62 with respect to the cleaning surface 70A of the cleaner belt 70 can be adjusted.

  The draft device D of this embodiment includes a suction part 41 and a spraying part 49. The suction part 41 sucks fiber scraps wound up by the top roller. In the present embodiment, the suction portion 41 is configured to suck the fiber waste that is wound up by the front top roller RF1. Moreover, the spraying part 49 is comprised so that the fiber waste deposited on the air spinning apparatus 11 may be removed with compressed air. Detailed description of the spraying part 49 is omitted.

  As shown in FIGS. 3 to 5, the suction unit 41 includes a second suction port 42, a second suction transfer tube 43, and a third suction transfer tube 44. The second suction port 42 is a part that sucks fiber waste on the downstream side of the front top roller RF1. The second suction port 42 is an opening of the suction mouse member 45. As described above, since the top rollers RB1, RT1, RM1, and RF1 of the two adjacent spinning units U are mounted on the cradle 31, the suction mouse member 45 corresponds to each front top roller RF1. One by one. The position where the suction mouse member 45 is disposed is downstream of the front top roller RF1 and slightly above the contact (nip) position between the front top roller RF1 and the front bottom roller RF2 in the machine height direction. . This position is a position where fiber waste is wound up by an accompanying flow caused by rotation of the front top roller RF1, and the suction unit 41 can efficiently suction fiber waste.

  The second suction conveyance tube 43 communicates with the second suction port 42 to exert a suction force on the second suction port 42 and conveys the fiber waste sucked by the second suction port 42. The second suction conveyance tube 43 is supported on the cradle 31 side. Each branched end of the second suction conveyance tube 43 is connected to the suction mouse member 45. A first connection portion 47 is provided at the other end of the second suction conveyance tube 43.

  The third suction conveyance tube 44 communicates with the second suction conveyance tube 43 to exert a suction force on the second suction port 42 and conveys the fiber waste sucked by the second suction port 42. The third suction conveyance tube 44 is disposed on the apparatus frame 32 side. The other end of the third suction conveyance pipe 44 is connected to the main pipe 91.

  At one end portion of the third suction conveyance tube 44, a second connection portion 48 for connecting or disconnecting the first connection portion 47 of the second suction conveyance tube 43 is provided. For this reason, as shown in FIG. 5A, in the draft position where the cradle 31 is closed, the first and second suction conveyance tubes 43 and 44 are brought into contact with each other by the first connection portion 47 and the second connection portion 48 contacting each other. Connected. Further, as shown in FIG. 5B, in the non-draft position where the cradle 31 is opened, the second suction conveyance pipe 43 and the third suction conveyance pipe 44 are separated by separating the first connection portion 47 and the second connection portion 48. Disconnected state.

  According to the drafting device cleaning device 60 and the drafting device D and spinning machine M provided with the cleaning device 60 according to the present embodiment described above, the following effects are obtained.

  Since the first suction port 63 of the cleaning device 60 is provided in the cover 62 installed in the vicinity of the cleaning surface 70 </ b> A of the cleaner belt 70, the width of the first suction port 63 is smaller than the width of the cleaner belt 70. In both cases, the suction force can be exerted on a wide range of the cleaner belt 70 in the width direction. For this reason, it is possible to suck and remove the fiber waste adhering to the cleaning surface 70A of the cleaner belt 70 with a small suction flow rate, and the fiber waste or the like is wound around the back top roller RB1, the third top roller RT1, and the apron belt E. It can prevent sticking. In addition, the amount of maintenance work for the operator to clean the cleaner belt 70 is reduced, the burden on the operator is reduced, and the accumulation of fiber debris near the draft device D can be prevented, so that the operability is stabilized.

The shape of the first suction port 63 of the cleaning device 60 was circular, and the diameter was 5 mm or more and 6 mm or less. For this reason, compared with the case where the diameter of the 1st suction port 63 is made smaller than this, fiber waste etc. become difficult to clog. In addition, a decrease in suction force can be suppressed as compared to the case where the diameter of the first suction port 63 is made larger than this.

  The cover 62 of the cleaning device 60 is disposed so that the facing surface is separated from the cleaning surface 70A of the cleaner belt 70 within a range of 1 mm or more and 2 mm or less. For this reason, wear of the cleaning surface 70A of the cleaner belt 70 when the cover 62 is brought into contact with the cleaning surface 70A of the cleaner belt 70 can be prevented. Further, since the cover 62 and the cleaning surface 70A of the cleaner belt 70 are close to each other, the suction force can be exerted on a wide range in the width direction of the cleaner belt 70, and the fiber waste and the like adhering to the cleaner belt 70 is removed by suction. be able to.

  The cleaning device 60 includes an adjustment unit 64 that adjusts the position of the first suction port 63 with respect to the cleaning surface 70 </ b> A of the cleaner belt 70. For this reason, the first suction port 63 is appropriately disposed on the cleaning surface 70A of the cleaner belt 70 in response to the variation in the dimensions of the cleaner belt 70 and / or the elongation of the cleaner belt 70 due to the change of the cleaner belt 70 over time. Can be placed in position.

  The cleaner belt 70 of the cleaning device 60 is made of rubber, and the cleaning surface 70A that is the outer peripheral surface of the cleaner belt 70 is formed smoothly. For this reason, fiber scraps and the like adhering to the cleaning surface 70A of the cleaner belt 70 do not get entangled with the cleaning surface 70A and can be sucked and removed from the first suction port.

  The first suction conveyance tube 81 of the cleaning device 60 is made of a transparent or translucent material. For this reason, the operator can visually confirm when fiber waste or the like is clogged inside the first suction conveyance pipe 81.

  A suction force is applied to the first suction port 63 of the cleaning device 60 and the second suction port 42 of the suction unit 41 by a common blower (suction source). For this reason, it is not necessary to provide a dedicated suction source corresponding to the first suction port 63 and the second suction port 42.

  Since the spinning machine M includes the cleaning device 60, the operation efficiency can be improved and the package P can be wound up efficiently.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said Example, A various change is possible. For example, in the present embodiment, the spinning machine M has been described. However, the spinning machine is not limited to the spinning machine, and any spinning machine or drafting machine may be used as long as it includes the draft device D.

  In the embodiment, the second suction transport pipe 43 and the third suction transport pipe 44 connected to the second suction port 42 of the suction section 41 can be separated, and the third suction transport pipe 44 is disposed on the apparatus frame 32 side. Although arranged, it is not limited to this. For example, as shown in FIG. 6, a first suction conveyance tube 81 connected to the first suction port 63 of the cleaning device 60 and a second suction conveyance tube 43 connected to the second suction port 42 of the suction unit 41 May be connected to the blower (suction source) of the blower box 4 through the main pipe 91 via the cradle 31 side.

  The draft roller to be cleaned by the cleaner belt 70 of the cleaning device 60 can be arbitrarily changed. For example, the front top roller RF1 may be cleaned by the cleaner belt 70.

  The spinning unit U is configured to draw the spun yarn Y from the pneumatic spinning device 11 by the yarn slack eliminating device 13, but is not limited to this configuration. A delivery roller and a nip roller may be provided between the air spinning device 11 and the yarn slack eliminating device 13, and the spun yarn Y may be pulled out by these rollers.

M Spinning machine U Spinning unit 4 Blower box D Draft device 11 Spinning device 21 Winding device 31 Cradle 32 Device frame 60 Cleaning device 61 Frame 62 Cover 63 First suction port 64 Adjustment unit 65 Fixing lever 66 Support unit 70 Cleaner belt 70A Cleaning Surface 71 First roller 72 Second roller 73 Tension roller 74 Energizing lever 81 First suction conveyance pipe 91 Main pipe F Fiber bundle Y Spinned yarn P Package

Claims (10)

A cleaner belt for cleaning the cleaning target by bringing the cleaning surface into contact with the cleaning target which is the peripheral surface of the draft roller of the draft device and / or the outer peripheral surface of the apron belt;
A cover installed near the cleaning surface of the cleaner belt and having a facing surface facing the cleaning surface;
A first suction port formed on the facing surface of the cover and having an opening width smaller than a width of the cleaner belt;
A suction source for applying a suction force to the first suction port;
A cleaning device for a draft device. A cleaning device for a draft device according to claim 1,
A cleaning device for a draft device, wherein the first suction port has a circular shape and a diameter of 5 mm to 6 mm. A cleaning device for a draft device according to claim 1 or 2,
The cleaning device for a draft device, wherein the facing surface of the cover is disposed within a range of 1 mm or more and 2 mm or less from the cleaning surface of the cleaner belt. A cleaning device for a draft device according to any one of claims 1 to 3,
A cleaning device for a draft device, comprising: an adjustment unit that adjusts a position of the first suction port with respect to the cleaning surface of the cleaner belt. A cleaning device for a draft device according to any one of claims 1 to 4,
The cleaning device for a draft device, wherein the cleaner belt is made of rubber, and the cleaning surface is formed smoothly. A cleaning device for a draft device according to any one of claims 1 to 5,
A suction transfer pipe connecting the first suction port and the suction source;
A cleaning device for a draft device, wherein at least a part of the suction conveyance tube is made of a transparent or translucent material.   A draft device comprising the draft device cleaning device according to any one of claims 1 to 6. The draft device according to claim 7, wherein
A plurality of roller pairs consisting of a top roller and a bottom roller along the traveling direction of the fiber bundle,
The drafting device, wherein the cleaning surface of the cleaner belt is disposed so as to contact a top roller of a roller pair excluding a roller pair on the most downstream side in the traveling direction of the fiber bundle. The draft device according to claim 8, wherein
A second suction port corresponding to the top roller of the most downstream roller pair in the traveling direction of the fiber bundle,
A draft device, wherein a suction force is applied to the second suction port by the suction source.   A spinning machine comprising the draft device according to any one of claims 7 to 9, an air spinning device, and a winding device.

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