JP2019031381A - Yarn draw-out device and yarn winder - Google Patents

Abstract

To provide a yarn draw-out device with high probability of successfully drawing a yarn out of a package.SOLUTION: A yarn draw-out device 28 comprises a first injection part 50 and a second injection part 60. The first injection part 50 has a first slit 50a formed therein, and air is jetted from the first slit 50a to generate a first airstream 91. The second injection part 60 has a second slit 60a formed therein, and air is jetted from the second slit 60a to generate a second airstream 92 which flows in the direction different from the flow direction of the first airstream 91.SELECTED DRAWING: Figure 3

Description

  The present invention mainly relates to a yarn drawing device for drawing a yarn from a package.

  2. Description of the Related Art Conventionally, there has been known a yarn pulling device that is arranged in the vicinity of a package and pulls out the yarn of the package to perform, for example, yarn splicing. Patent documents 1 to 3 disclose this type of yarn drawing device.

  Patent Document 1 discloses a yarn drawing device in which one slit for injecting compressed air is formed. The air flow generated by the compressed air jetted from the slit flows along the outer wall surface of the yarn drawing device. Since the outer wall surface is disposed in the vicinity of the package, the air flow draws the yarn from the package.

  Patent Documents 2 and 3 disclose a yarn end outlet device having a configuration in which two nozzle tubes are arranged in the axial direction of a package. A plurality of nozzle holes are formed in each of the two nozzle tubes. By jetting air from these nozzle holes, the yarn entangled on the surface of the package can be peeled off.

JP 2014-125348 A Japanese Utility Model Publication No. 5-5769 German Patent Application Publication No. 2426724

  However, since only one slit is provided in the yarn pulling device of Patent Document 1, the range in which the air flow acts on the package may not be sufficient. As a result, it may not be possible to pull the yarn out of the package. Moreover, in patent documents 2 and 3, since air is injected from a nozzle hole, the intensity | strength of an air flow may become non-uniform | heterogenous in the axial direction of a package. As a result, it may not be possible to pull the yarn out of the package.

  A main object of the present invention is to provide a yarn drawing device that is highly likely to be successfully drawn from a package.

Means and effects for solving the problems

  According to a first aspect of the present invention, a yarn drawing device having the following configuration is provided. That is, the yarn drawing device includes a first injection unit and a second injection unit. A first slit is formed in the first ejection part, and a first air flow is generated by ejecting air from the first slit. A second slit is formed in the second injection part, and air is injected from the second slit to generate a second air flow that flows in a direction different from the flow direction of the first air flow. Let

  Accordingly, air flows having different flow directions are respectively generated from the two slits, so that the air flow is easily applied to the package in a wide range. As a result, it is possible to increase the probability of successfully pulling out the yarn from the package.

  According to a second aspect of the present invention, a yarn drawing device having the following configuration is provided. That is, the yarn pulling device includes a main body portion, a first injection portion, and a second injection portion. The first injection part includes a first spacer part and a first cover part, and the first spacer part is disposed between the first cover part and the main body part to thereby provide a first. A slit is formed, and a first air flow is generated by ejecting air from the first slit. The second injection part has a second spacer part and a second cover part, and the second spacer part is disposed between the second cover part and the first cover part. A second slit is formed, and a second air flow is generated by ejecting air from the second slit.

  Thereby, since an air flow is generated from two slits formed at different positions, air flows having different flow directions easily act on the package. As a result, it is possible to increase the probability of successfully pulling out the yarn from the package.

  In the yarn drawing device, it is preferable that a thickness of at least one of the first spacer portion and the second spacer portion is 0.01 mm or more and 5 mm or less.

  Thereby, it is possible to sufficiently increase the success rate of drawing the yarn from the package while suppressing the amount of air supplied to the yarn drawing device.

  In the yarn pulling device, the first inclined surface that is inclined to be connected to the base end of the flow of the first air flow and is connected to the first slit, and the base end of the flow of the second air flow. It is preferable that at least one of a second inclined surface that is inclined so as to be connected and connected to the second slit is provided.

  Thereby, since the air around the first slit and / or the second slit can be drawn into the first air flow and / or the second air flow, the package reduces the amount of air supplied to the yarn drawing device. The thread from can be pulled out.

  In the above-described yarn drawing device, the length of the surface that guides the air before being ejected from the second slit becomes longer in the short direction of the second slit as it approaches the second slit. It is preferable to have an injection direction correction surface that is inclined in the direction.

  As a result, the second air flow flows away from the outer surface of the yarn pulling device, so that the second air flow easily hits the package.

  In the yarn pulling device, a guide portion that is provided on the downstream side in the flow direction of the first air flow and guides the yarn drawn from the package to the center side in the longitudinal direction of the first slit. It is preferable to provide.

  As a result, the position of the yarn pulled out from the package by the yarn drawing device is determined, so that the next step can be easily performed.

  The above-described yarn drawing device preferably has the following configuration. That is, the yarn drawing device has a first outer surface and a second outer surface. The first outer surface is provided with the first slit and the second slit. The second outer surface is provided on the downstream side in the flow direction of the first air flow with respect to the first outer surface. The guide portion is provided on the second outer surface.

  Accordingly, the surface for drawing the yarn from the package (first outer surface) and the surface for guiding the drawn yarn (second outer surface) can be separated, so that the size of the yarn drawing device can be reduced. it can.

  The above-described yarn drawing device preferably has the following configuration. That is, the guide portion is formed with a first guide surface and a second guide surface that protrude from the second outer surface and are arranged to face each other. The distance between the first guide surface and the second guide surface becomes wider as the first outer surface is approached.

  Thereby, the yarn pulled out from the package is easily guided by the guide portion. In addition, since the yarn is guided to a narrow range by the guide portion, the next step can be easily performed.

  According to a third aspect of the present invention, the following yarn winding machine is provided. That is, the yarn winding machine includes the above-described yarn drawing device and a winding unit. The winding unit winds the yarn to form the package by rotating the winding tube in the winding direction. The flow direction of the first air flow is set so as to guide the yarn drawn from the package to the first target position, and the flow direction of the second air flow is set so as to go to the package. Yes.

  Thereby, since the functions of the first air flow and the second air flow can be made different, the yarn can be pulled out from the package and guided to the first target position.

  The yarn winding machine preferably has the following configuration. That is, the winding unit is configured to be able to rotate the package in a reverse rotation direction that is opposite to the winding direction. The second slit is formed downstream of the first slit in the reverse rotation direction of the package.

  Thus, the yarn can be peeled off from the package by the second air flow or the yarn can be peeled off, and the peeled yarn can be sent downstream by the first air flow.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a first catching member that catches the yarn drawn by the yarn drawing device. The first target position is a capture position of the first capture member.

  Thereby, the success rate of capture by the first capture member can be increased.

  The yarn winding machine preferably has the following configuration. That is, the first catching member is configured to catch the yarn by sucking the yarn and guide the yarn to the second target position. The suction force of the first catching member is set so that the suction force when catching the yarn is larger than the suction force when guiding the yarn to the second target position.

  As a result, the probability of failing to catch the yarn at the time of catching the yarn can be reduced, and the probability of yarn breakage at the time of guiding the yarn can be reduced.

  The yarn winding machine preferably includes a second catching member that receives the yarn caught by the first catching member from the yarn pulling device and guides the yarn to a third target position.

  Thereby, the yarn can be guided to the target position while reducing the size or the movable range of each capturing member.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a plurality of winding units and a work carriage. Each of the winding units includes at least the winding unit. The work carriage is provided to be movable with respect to the plurality of winding units. The yarn drawing device is provided on the work carriage.

  Thereby, the cost of a yarn winding machine can be suppressed by providing one yarn drawing device for a plurality of winding units.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a plurality of winding units each including at least the winding unit. The yarn drawing device is provided in each of the plurality of winding units.

  As a result, when the winding unit needs to pull out the yarn from the package, the yarn can be pulled out from the package immediately, so that the production efficiency of the package can be improved.

The front view of the automatic winder which concerns on one Embodiment of this invention. The side view which shows schematic structure of a winding unit. The external appearance perspective view of a thread | yarn withdrawal apparatus. The disassembled perspective view of a thread drawing device. The side view of a thread | yarn withdrawal apparatus and a package. Side surface sectional drawing of the vicinity of a 1st slit and a 2nd slit.

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

  As shown in FIG. 1, the automatic winder (yarn winding machine) 1 includes a plurality of winding units 10 arranged side by side, a doffing device 5, and a machine base control device 100.

  Each winding unit 10 traverses the yarn 20 unwound from the yarn feeding bobbin 21 and winds it around a winding tube 22 supported by a cradle (winding tube support portion) 23 to form a package 30. .

  The doffing device 5 travels to the position of the winding unit 10 when the package 30 becomes full in each winding unit 10 and discharges the full package 30 from the winding unit 10 (doffing operation). And the winding tube 22 around which the yarn 20 is not wound is supplied to the winding unit 10.

  The machine base control device 100 includes a machine base setting unit 101 and a machine base display unit 102. The machine base setting unit 101 can perform setting for each winding unit 10 by an operator inputting a predetermined setting value or selecting an appropriate control method. The machine base display unit 102 can display the winding status of the yarn 20 of each winding unit 10 and the content of the trouble that has occurred.

  Next, the configuration of the winding unit 10 will be specifically described with reference to FIG.

  The winding unit 10 includes a yarn unwinding assisting device 12, a tension applying device 13, a yarn splicing device in order from the yarn feeding bobbin 21 side in the yarn traveling path between the yarn feeding bobbin 21 and the winding tube 22. The apparatus 14, the clearer 15, and the winding part 18 are arrange | positioned.

  The yarn unwinding assisting device 12 includes a regulating member 25 that covers the core tube of the yarn feeding bobbin 21. The yarn unwinding assisting device 12 assists the unwinding of the yarn 20 from the yarn supplying bobbin 21 by lowering the regulating member 25 in conjunction with the unwinding of the yarn 20 from the yarn supplying bobbin 21. The regulating member 25 comes into contact with the balloon formed on the upper portion of the yarn feeding bobbin 21 by the rotation and centrifugal force of the yarn 20 unwound from the yarn feeding bobbin 21, and the yarn is controlled by controlling the balloon to an appropriate size. Assists 20 unraveling. A sensor (not shown) for detecting the chase portion (upper end portion of the yarn layer) of the yarn feeding bobbin 21 is provided in the vicinity of the regulating member 25. When this sensor detects the descent of the chase portion, the regulating member 25 is lowered by, for example, an air cylinder (not shown).

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. As the tension applying device 13, for example, a gate type in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The movable comb teeth can be rotated by a rotary solenoid so that the comb teeth are engaged or released. In addition to the gate type, for example, a disk type can be adopted as the tension applying device 13.

  The yarn joining device 14 is connected to the yarn 20 (lower yarn) on the yarn supplying bobbin 21 side at the time of yarn cutting performed by the clearer 15 by detecting a yarn defect, or when the yarn breaker is being unwound from the yarn supplying bobbin 21. The yarn 20 (upper yarn) on the package 30 side is spliced. As the yarn joining device 14, a mechanical configuration or a configuration using a fluid such as compressed air can be adopted.

  The clearer 15 includes an unillustrated sensor for detecting the thickness of the thread 20 and / or the presence or absence of foreign matter contained in the thread 20. The clearer 15 detects a yarn defect such as a slab by monitoring a yarn thickness signal from the sensor. In the vicinity of the clearer 15, a cutter 39 for cutting the yarn 20 immediately when the clearer 15 detects a yarn defect is provided.

  On the lower side and the upper side of the yarn joining device 14, a lower yarn catching member 33 that catches the lower yarn on the yarn feeding bobbin 21 side and guides it to the yarn joining device 14, and an upper yarn on the package 30 side is caught. An upper thread catching member (first catching member) 36 that guides the apparatus 14 is provided.

  The lower thread catching member 33 is rotatable about the shaft 34. The upper thread catching member 36 is rotatable about the shaft 37. An appropriate negative pressure source (not shown) is connected to the lower thread catching member 33 and the upper thread catching member 36, respectively. As a result, a suction flow is generated at the opening at the tip of the lower thread catching member 33, and the lower thread can be sucked and captured by the lower thread catching member 33. A suction flow is also generated at the opening at the tip of the upper thread catching member 36, and the upper thread can be sucked and captured by the upper thread catching member 36. At least one of the lower thread catching member 33 and the upper thread catching member 36 is not limited to the configuration in which the suction flow is generated and the yarn 20 is captured, and the yarn 20 is captured using a member that clamps the yarn 20. Also good.

  The winding unit 18 includes a cradle 23 that removably supports the winding tube 22, and a contact roller 29 that can rotate in contact with the outer peripheral surface of the winding tube 22 or the outer peripheral surface of the package 30.

  The cradle 23 is supported so as to be able to rotate in a direction toward and away from the contact roller 29. The increase in the yarn layer diameter accompanying the winding of the yarn 20 around the winding tube 22 can be absorbed by the rotation of the cradle 23.

  The contact roller 29 is disposed so as to face the winding tube 22 and to contact the winding tube 22 or the package 30. Therefore, the winding tube 22 or the package 30 can be driven to rotate by rotating the contact roller 29. An unillustrated traverse groove is formed on the outer peripheral surface of the contact roller 29, and the traverse groove can traverse the yarn 20 with a predetermined width. Accordingly, the winding unit 10 can form the package 30 by winding the yarn 20 around the winding tube 22 while traversing the yarn 20.

  The traverse method of the yarn 20 is not limited to the traverse groove, and may be a traverse mechanism (rod-type traverse device, arm-type traverse device, or belt-type traverse device) provided independently of the contact roller 29. In this case, instead of the configuration in which the winding tube 22 or the package 30 is driven and rotated, the winding roller 22 or the package 30 may be rotated and the contact roller 29 may be driven and rotated.

  In the vicinity of the contact roller 29 and the package 30, a yarn drawing device 28 is disposed. The yarn drawing device 28 is a device that pulls out the yarn 20 from the package 30. When the yarn 20 between the yarn supplying bobbin 21 and the package 30 is in a divided state, the yarn drawing device 28 draws the yarn 20 from the package 30 by injecting air to generate an air flow. The case where the yarn 20 is in a divided state is, for example, a case where the clearer 15 detects a yarn breakage, or a case where the clearer 15 detects a yarn defect and cuts the yarn 20 with the cutter 39.

  The timing at which the yarn drawing device 28 starts jetting air may be when the package 30 is rotating in the reverse rotation direction (unwinding direction) opposite to the winding direction, or the package 30 is moving in the winding direction. The rotation may be stopped and the rotation in the reverse rotation direction may be started. The yarn pulling device 28 may prevent the yarn 20 from adhering to the package 30 by injecting air while the package 30 is decelerating from the state where the package 30 is rotating in the winding direction. Thereby, the yarn drawing device 28 can pull out the yarn 20 of the package 30 more reliably. When the yarn 20 is pulled out from the package 30, the winding unit 18 rotates the package 30 in the reverse direction. If the drawing of the yarn 20 from the package 30 fails, the reverse rotation of the package 30 is stopped and the package 30 is rotated several times in the winding direction. At this time, an air flow may be ejected from the yarn drawing device 28. Accordingly, when the yarn 20 is pulled out from the package 30 for the second time, the probability that the yarn 20 can be pulled out from the package 30 is improved. The yarn 20 (upper yarn) pulled out from the package 30 in this way is caught by the upper yarn catching member 36 and guided to the yarn joining device 14 (second target position). The upper yarn guided by the yarn joining device 14 is joined by the yarn joining device 14 with the lower yarn caught and guided by the lower yarn catching member 33.

  The upper yarn catching member 36 is set so that the suction force when sucking and catching the yarn 20 from the yarn pulling device 28 is larger than the suction force when guiding the sucked yarn 20 to the yarn joining device 14. ing. As a result, it is possible to reduce the probability of failure in catching the yarn 20 and to reduce the probability of yarn breakage during the guide of the yarn 20. However, the suction force of the upper thread catching member 36 may be a constant suction force from the time of catching to the time of guiding.

  Hereinafter, the configuration of the yarn drawing device 28 will be described in detail with reference to FIGS. 3 to 6.

  As shown in FIG. 3, the yarn drawing device 28 has a substantially rectangular parallelepiped shape, and has a first outer surface 28a and a second outer surface 28b. As shown in FIG. 5, the yarn drawing device 28 is arranged so that the first outer surface 28 a and the second outer surface 28 b are close to the package 30. The first outer surface 28a is disposed at an angle along the surface of the package 30 (an angle close to the tangential direction of the package 30). The yarn pulling device 28 peels off the yarn 20 from the package 30 by an air flow (specifically, a first air flow 91 and a second air flow 92, which will be described later) generated on the first outer surface 28a. The yarn 20 is pulled out from the package 30 by sending it toward 28b. The second outer surface 28 b is disposed at an angle along the radial direction of the package 30. The second outer surface 28b is located downstream of the first outer surface 28a in the air flow direction. The yarn pulling device 28 guides the yarn 20 peeled from the package 30 along the second outer surface 28b to the opening (capture position, first target position) of the upper yarn capture member 36.

  As shown in FIG. 3, the yarn drawing device 28 includes a main body 40, a first injection unit 50, and a second injection unit 60. In the following description, as shown in FIGS. 3 and 4, the axial direction of the package 30 (winding tube 22) is referred to as “package axial direction”. A direction along the first outer surface 28a when viewed in the package axial direction (that is, in a side view of FIG. 5 or the like) (strictly, a direction along a portion where no inclined surface is formed) is referred to as a “first direction”. . A direction perpendicular to the first direction when viewed in the package axial direction is referred to as a “second direction”.

  The main body portion 40 is attached in the vicinity of the winding portion 18 by an unillustrated attachment mechanism. The main body 40 may be movable between a position near the package 30 and a position spaced from the package 30. An air supply pipe 81 for supplying compressed air is attached to the main body 40. The main body part 40 is provided with a first air supply path 41, a second air supply path 42, a curved surface 43, and a guide part 45.

  The first air supply path 41 and the second air supply path 42 are spaces formed inside the main body 40 and are paths through which the compressed air supplied through the air supply pipe 81 flows. The compressed air flows in the first air supply path 41 and the second air supply path 42 along the second direction (specifically, toward the side where the first injection unit 50 and the second injection unit 60 are disposed). The first air supply path 41 is formed on one side in the first direction (specifically, on the side closer to the second outer surface 28b) than the second air supply path 42. The compressed air supplied via the first air supply path 41 is injected from the first injection unit 50, whereby the first air flow 91 is generated. The compressed air supplied via the second air supply path 42 is injected from the second injection unit 60, whereby the second air flow 92 is generated. The 1st air supply path 41 and the 2nd air supply path 42 are not divided by the partition etc., but are connected. Accordingly, the first air flow 91 and the second air flow 92 have a common air supply path.

  The curved surface 43 is a surface exposed to the outside of the yarn drawing device 28, and is a surface curved so as to smoothly connect the first outer surface 28a and the second outer surface 28b and bulge outward. It is.

  The guide portion 45 is provided on the second outer surface 28b. The guide unit 45 guides the yarn 20 drawn from the package 30 by the yarn drawing device 28 toward the first target position described above. The guide portion 45 includes two members that protrude in the first direction from both ends of the second outer surface 28b in the package axial direction (package width direction). One of the two members is provided with a first guide surface 45a, and the other member is provided with a second guide surface 45b.

  The first guide surface 45a and the second guide surface 45b are arranged to face each other so as to face the center side in the package axial direction. The first guide surface 45a and the second guide surface 45b are surfaces that are substantially perpendicular to the second outer surface 28b. The distance between the first guide surface 45a and the second guide surface 45b becomes wider as the first outer surface 28a is approached (as the curved surface 43 is approached). In other words, the distance between the first guide surface 45a and the second guide surface 45b becomes narrower as it approaches the downstream side in the guide direction of the yarn 20. The first guide surface 45a and the second guide surface 45b are inclined so as to approach the center side in the package axial direction as they approach the downstream side in the guide direction of the yarn 20, respectively.

  As shown in FIG. 3, in the present embodiment, the first target position is not the center in the package axial direction, but is closer to the first guide surface 45a side (L1 <L2 in FIG. 3). Therefore, the first guide surface 45a and the second guide surface 45b of the present embodiment have different inclination angles. Specifically, when approaching the downstream side in the guide direction of the yarn 20 by a predetermined length, the second guide surface 45b is closer to the center side in the package axial direction than the first guide surface 45a. In the case where the first target position is the center in the package axial direction, the first guide surface 45a and the second guide surface 45b may have the same inclination angle. The guide portion 45 may be a separate member attached to the main body portion 40, or may be configured integrally with the main body portion 40.

  The first injection unit 50 includes a first spacer unit 51 and a first cover unit 52. The first spacer portion 51 and the first cover portion 52 are plate-like members that constitute a part of the first outer surface 28a and have the same orientation (specifically, the thickness direction (height direction) is the second). It is attached to the main body 40 (in the same direction).

  The first spacer portion 51 is formed with a notch 51a, an air passage hole 51b, and a mounting hole 51c. The cutout 51a is a portion in which an end portion in the first direction (specifically, an end portion on the second outer surface 28b side) is cut out in a rectangular shape. The notch 51a is formed at a position overlapping the first air supply path 41 when viewed in the second direction (compressed air flow direction). Thereby, the compressed air supplied via the 1st air supply path 41 passes the notch 51a.

  The air passage hole 51b is a through hole formed on the other side in the first direction than the notch 51a (specifically, on the opposite side of the second outer surface 28b, the upstream side in the flow direction of the second air flow 92). is there. A plurality of air passage holes 51b are formed side by side in the package axial direction. The air passage hole 51b is formed at a position overlapping the second air supply path 42 when viewed in the second direction. Thereby, the compressed air supplied through the second air supply path 42 passes through the air passage hole 51b.

  The attachment hole 51 c is a through hole for attaching the first spacer part 51 to the main body part 40. A fixing tool such as a bolt is inserted into the mounting hole 51c in a state where the position is aligned with the mounting hole formed in the first cover part 52 and the second injection part 60. Thereby, the 1st spacer part 51 is attached to the main-body part 40 with the 1st cover part 52, the 2nd injection part 60 grade | etc.,.

  The first cover part 52 is attached to the main body part 40 through the first spacer part 51 and so as to cover the first spacer part 51. Since the notch 51 a is formed in the first spacer portion 51, the first cover portion 52 is attached to the main body portion 40 with an interval. As a result, a gap is generated inside the first cover portion 52, and this gap is the first slit 50a. Therefore, the longitudinal direction of the first slit 50a is the same as the package axial direction. The width (height, length in the short direction) of the first slit 50 a is related to the thickness of the first spacer portion 51. The thickness of the first spacer portion 51 is preferably 0.01 mm or more and 5 mm or less, more preferably 0.03 mm or more and 2 mm or less, or more preferably 0.03 mm or more and 0.2 mm or less. The compressed air supplied through the first air supply path 41 passes through the notch 51a and is guided to the first cover portion 52 (specifically, the surface facing the main body portion 40 side, the inner surface), and the first slit 50a. Is injected from. As a result, a first air flow 91 is generated. The first air flow 91 mainly flows along the curved surface 43 and then flows along the second outer surface 28b. The first airflow 91 peels off the yarn 20 from the package 30 and guides the yarn 20 peeled off from the package 30.

  The first cover portion 52 is formed with a first inclined surface 52a, an air passage hole 52b, and an attachment hole 52c. The first inclined surface 52 a is formed on a surface (outer surface) facing the side opposite to the main body 40. The first inclined surface 52a is formed from the first slit 50a to the other side in the first direction. The first inclined surface 52a is inclined so as to approach the first spacer portion 51 (inside the main body portion 40) as it approaches one side in the first direction. In other words, the first inclined surface 52 a is inclined so as to be connected to the proximal end of the flow of the first air flow 91. With this configuration, since the first auxiliary air flow 93 (FIG. 5) is likely to be generated around the first slit 50 a, the surrounding air can be effectively drawn into the first air flow 91. Thereby, the thread | yarn 20 of the package 30 can be pulled out more reliably, suppressing the flow volume of the airflow injected from the 1st slit 50a.

  The air passage hole 52b is a plurality of through holes formed side by side in the package axial direction. The air passage hole 52b is formed at a position overlapping the second air supply path 42 and the air passage hole 51b when viewed in the second direction. Thereby, the compressed air supplied through the second air supply path 42 passes through the air passage hole 51b and the air passage hole 52b. The attachment hole 52c is a through hole used for attachment to the main body 40 together with the attachment hole 51c.

  The second injection unit 60 includes a second spacer unit 61 and a second cover unit 62. The 2nd spacer part 61 and the 2nd cover part 62 are plate-shaped members, and comprise a part of 1st outer surface 28a. The second spacer portion 61 and the second cover portion 62 have the same orientation (specifically, the thickness direction (height direction) is the same as the second direction), and the main body via the first injection portion 50. It is attached to the part 40.

  The second spacer portion 61 is formed with a notch 61a and a mounting hole 61b. The notch 61a is a portion in which an end in the first direction (specifically, an end on the second outer surface 28b side and an end on the first slit 50a side) is cut out in a rectangular shape. The notch 61a is formed at a position overlapping the second air supply path 42 when viewed in the second direction. Thereby, the compressed air supplied via the 2nd air supply path 42, the air passage hole 51b, and the air passage hole 52b passes the notch 61a. The attachment hole 61b is a through hole used for attachment to the main body 40 together with the attachment hole 51c and the attachment hole 52c described above. The thickness (height) of the second spacer portion 61 is preferably 0.01 mm or more and 5 mm or less, more preferably 0.03 mm or more and 2 mm or less, or more preferably 0.03 mm or more and 0.2 mm or less.

  The second cover part 62 is attached to the main body part 40 through the second spacer part 61 and so as to cover the second spacer part 61. Since the notch 61 a is formed in the second spacer portion 61, the second cover portion 62 is attached to the first cover portion 52 with an interval. As a result, a gap is generated inside the second cover portion 62, and this gap is the second slit 60a. The compressed air supplied via the second air supply path 42 and the like passes through the notch 61a, and is guided to the second cover part 62 (specifically, the surface facing the main body part 40 side, the inner surface). Injected from 60a. As a result, a second air flow 92 is generated.

  The second cover portion 62 is formed with a second inclined surface 62a, an ejection direction correction surface 62b, and a mounting hole 62c. The second inclined surface 62 a is formed on a surface (outer surface) facing the side opposite to the main body portion 40. The second inclined surface 62a is formed from the second slit 60a to the other side in the first direction. The second inclined surface 62a is inclined so as to approach the second spacer portion 61 (inside the main body portion 40) as it approaches one side in the first direction. In other words, the second inclined surface 62 a is inclined so as to be connected to the proximal end of the flow of the second air flow 92. With this configuration, the second auxiliary air flow 94 is easily generated, and the surrounding air can be effectively drawn into the second air flow 92.

  The ejection direction correction surface 62b is an inner surface of the second cover portion 62, and particularly an inclined surface formed in the vicinity of the second slit 60a. As shown in FIG. 6, the ejection direction correction surface 62b moves away from the main body 40, the second spacer 61, and the like as the second slit 60a is approached (the length in the short direction of the second slit 60a is It is a sloped surface (to be longer). In other words, on the premise that the outer surface (second inclined surface 62a) is flat, the ejection direction correction surface 62b is an inclined surface formed such that the plate thickness becomes thinner as it approaches the second slit 60a. . The attachment hole 62c is a through hole used for attachment to the main body 40 together with the attachment hole 51c, the attachment hole 52c, and the attachment hole 61b described above.

  The second air flow 92 generated by the compressed air ejected from the second slit 60a is guided mainly by the ejection direction correction surface 62b and flows away from the first cover portion 52 toward the package 30. In particular, in the present embodiment, the second slit 60 a is provided not on the first inclined surface 52 a but on the upstream side of the first inclined surface 52 a in the first cover portion 52. Therefore, it is difficult for the second air flow 92 to flow along the first inclined surface 52 a toward the second outer surface 28 b, so that the second air flow 92 easily flows toward the package 30. Since the second air flow 92 is an air flow that flows toward the package 30, the second air flow 92 easily hits the package 30, and thus the yarn 20 is easily peeled from the package 30. Since the second air flow 92 flows in a direction different from that of the first air flow 91, even if the yarn 20 cannot be peeled off by the first air flow 91, the yarn 20 can be peeled off by the second air flow 92. There is sex. Therefore, compared with the case where only the first air flow 91 is generated, the probability that the yarn 20 is successfully pulled out can be increased.

  In order for the first air flow 91 and the second air flow 92 to effectively act on the package 30, the yarn drawing device 28 needs to be disposed near the package 30. In the present embodiment, since the curved surface 43 is formed, the yarn drawing device 28 is less likely to interfere with the package 30 as compared with a configuration in which the curved surface 43 is a right angle. For this reason, it is possible to arrange the thread drawing device 28 near the package 30. Similarly, forming the first inclined surface 52a and the second inclined surface 62a makes it difficult for the yarn drawing device 28 to interfere with the package 30, so that the yarn drawing device 28 can be disposed near the package 30. is there. Since the diameter of the package 30 increases as the yarn 20 is wound, it is preferable to provide a movable member for moving the yarn drawing device 28 to a position corresponding to the diameter of the package 30.

  By disposing the first slit 50a and the second slit 60a, in particular, near the package 30 in the yarn drawing device 28, the first air flow 91 and the second air flow 92 can be more effectively acted on. In the present embodiment, the second slit 60a is located upstream of the first slit 50a in the flow direction of the second air flow 92 in the first direction. The second slit 60a is located on the side farther from the main body 40 than the first slit 50a (the side closer to the package 30) in the second direction. That is, the distance from the package 30 is increased by going from the first slit 50a to the upstream side in the flow direction of the second air flow 92 along the first direction, but the second slit is made up to compensate for this positional relationship. 60a is provided at a position protruding toward the package 30 in the second direction. In other words, the first slit 50 a and the second slit 60 a are provided in a layout along the surface of the package 30. Therefore, both the first slit 50 a and the second slit 60 a can be disposed near the package 30.

  As described above, the yarn drawing device 28 of the present embodiment includes the first injection unit 50 and the second injection unit 60. A first slit 50a is formed in the first injection unit 50, and a first air flow 91 is generated by injecting air from the first slit 50a. A second slit 60 a is formed in the second injection unit 60, and the second air flow that flows in a direction different from the flow direction of the first air flow 91 when air is injected from the second slit 60 a. 92 is generated.

  As a result, air flows having different flow directions are respectively generated from the two slits, so that the air flow is easily applied to the package 30 in a wide range. As a result, the probability that the yarn 20 is successfully pulled out from the package 30 can be increased.

  The yarn drawing device 28 according to the present embodiment includes a main body 40, a first injection unit 50, and a second injection unit 60. The first injection unit 50 includes a first spacer unit 51 and a first cover unit 52, and the first spacer unit 51 is disposed between the first cover unit 52 and the main body unit 40. The 1st slit 50a is formed by this, and the 1st airflow 91 is generated by injecting air from the said 1st slit 50a. The second injection unit 60 includes a second spacer unit 61 and a second cover unit 62, and the second spacer unit 61 is disposed between the second cover unit 62 and the first cover unit 52. Thus, the second slit 60a is formed, and air is jetted from the second slit 60a to generate the second air flow 92.

  Thereby, since an air flow is generated from two slits formed at different positions, air flows having different flow directions easily act on the package 30. As a result, the probability that the yarn 20 is successfully pulled out from the package 30 can be increased.

  In the yarn drawing device 28 of the present embodiment, the thickness of at least one of the first spacer portion 51 and the second spacer portion 61 (more specifically, both) is 0.01 mm or more and 5 mm or less.

  As a result, the success rate of drawing the yarn 20 from the package 30 can be sufficiently increased while suppressing the amount of air supplied to the yarn drawing device 28.

  In the yarn pulling device 28 of the present embodiment, a first inclined surface 52a that is inclined so as to be connected to a proximal end of the flow of the first air flow 91 and connected to the first slit 50a, and a flow of the second air flow 92 At least one (in detail, both) of the second inclined surface 62a that is inclined and connected to the second slit 60a is provided.

  Thereby, since the air around the first slit 50a and / or the second slit 60a can be drawn into the first air flow 91 and / or the second air flow 92, the air flow supplied to the yarn drawing device 28 can be reduced. The yarn 20 from the package 30 can be pulled out while reducing the flow rate.

  In the yarn pulling device 28 according to the present embodiment, the surface that guides the air before being jetted from the second slit 60a has a length in the short direction of the second slit 60a as it approaches the second slit 60a. It has the injection direction correction surface 62b which inclines so that it may become long.

  Thereby, since the 2nd air flow 92 flows away from the outer surface (1st outer surface 28a) of the thread | yarn extraction apparatus 28, the 2nd air flow 92 becomes easy to hit the package 30. FIG.

  The yarn drawing device 28 of the present embodiment is provided on the downstream side in the flow direction of the first air flow 91, and guides the yarn 20 drawn from the package 30 to the center side in the longitudinal direction of the first slit 50a. The unit 45 is provided.

  Thereby, since the position of the thread | yarn 20 with which the thread | yarn extraction apparatus 28 pulled out from the package 30 is decided, the next process can be performed easily.

  The yarn drawing device 28 of the present embodiment has a first outer surface 28a and a second outer surface 28b. The first outer surface 28a is provided with a first slit 50a and a second slit 60a. The second outer surface 28b is provided on the downstream side in the flow direction of the first air flow 91 with respect to the first outer surface 28a. A guide portion 45 is provided on the second outer surface 28b.

  Thereby, the surface (first outer surface 28a) for drawing the yarn 20 from the package 30 and the surface (second outer surface 28b) for guiding the drawn yarn 20 can be separated, so that the size of the yarn drawing device 28 can be increased. The thickness can be reduced.

  In the yarn drawing device 28 of the present embodiment, the guide portion 45 is formed with a first guide surface 45a and a second guide surface 45b that protrude from the second outer surface 28b and are disposed so as to face each other. . The distance between the first guide surface 45a and the second guide surface 45b increases as the distance from the first outer surface 28a approaches.

  Thereby, the yarn 20 drawn out from the package 30 is easily guided by the guide portion 45. Moreover, since the thread | yarn 20 is guided to the narrow range by the guide part 45, the next process can be performed easily.

  The automatic winder 1 according to this embodiment includes a yarn drawing device 28 and a winding unit 18. The winding unit 18 forms the package 30 by winding the yarn 20 by rotating the winding tube 22 in the winding direction. The flow direction of the first air flow 91 is set so as to guide the yarn 20 drawn from the package 30 to the first target position, and the flow direction of the second air flow 92 is set so as to be directed toward the package 30. ing.

  Thereby, since the functions of the first air flow 91 and the second air flow 92 can be made different, the yarn 20 is pulled out from the package 30 and the pulled yarn 20 is guided to the first target position (capture position). Can do.

  In the automatic winder 1 of the present embodiment, the second slit 60a is formed on the downstream side in the reverse rotation direction of the package 30 from the first slit 50a.

  As a result, the yarn 20 can be peeled off from the package 30 by the second air flow 92 or the yarn 20 can be peeled off, and the peeled yarn 20 can be sent downstream by the first air flow 91.

  The automatic winder 1 according to the present embodiment includes an upper yarn catching member 36 that catches the yarn 20 drawn by the yarn drawing device 28. The first target position is the catch position of the upper thread catch member 36.

  Thereby, the success rate of catching by the upper thread catching member 36 can be increased.

  In the automatic winder 1 of the present embodiment, the upper yarn catching member 36 sucks the yarn 20 by sucking the yarn 20 and guides it to the second target position (yarn splicing device 14). The suction force of the upper yarn catching member 36 is set so that the suction force when catching the yarn 20 is larger than the suction force when guiding the sucked yarn 20 to the second target position.

  Accordingly, it is possible to reduce the probability of failing to catch the yarn 20 when catching the yarn 20, and to reduce the probability of yarn breakage when guiding the yarn 20.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  In the above-described embodiment, the yarn joining device 14 is provided for each winding unit 10. However, a work cart that can move in the direction in which the winding units 10 are arranged is added, and the working cart may include the yarn joining device 14. . In this case, the yarn drawing device 28 may be provided on the work carriage. The upper thread catching member 36 and the lower thread catching member 33 may also be provided on the work carriage. Alternatively, the yarn drawing device 28 may be provided in the doffing device 5 (work cart). In this case, the doffing device 5 may draw the yarn 20 from the package 30 by the yarn drawing device 28 when the doffing operation is not performed. However, the yarn 20 may be pulled out from the package 30 of another winding unit 10 by the yarn drawing device 28 while the doffing operation is performed on a certain winding unit 10. When the yarn drawing device 28 is provided in the doffing device 5, the yarn joining device 14 is preferably provided in each winding unit 10. The upper thread catching member 36 may be provided in either the doffing device 5 or each winding unit 10.

  The cutout 51a, the air passage hole 51b, the air passage hole 52b, and the cutout 61a may have shapes other than those shown in the above embodiment as long as compressed air can pass through. For example, the notch 51a and the notch 61a may be formed in an uneven shape (comb shape). The air passage hole 51b and the air passage hole 52b may be one long hole that is long in the package axial direction.

  In the said embodiment, the 1st injection part 50 and the 2nd injection part 60 are integrally comprised by being attached to the same main-body part 40. FIG. It may replace with this and the 1st injection part 50 and the 2nd injection part 60 may be constituted separately.

  In the above embodiment, the yarn 20 drawn from the package 30 by the yarn drawing device 28 is guided to the yarn joining device 14 via the upper yarn catching member 36. Instead of this, a configuration in which the upper yarn catching member 36 is guided to the yarn joining device 14 via another catching member (second catching member) may be employed. The second catching member is, for example, a tubular member capable of sucking the yarn 20, and includes a position for catching the yarn 20 from the upper yarn catching member 36 and a position for guiding the captured yarn 20 to the yarn joining device 14. It is a member that can move between them. In this configuration, the capture position of the second capture member corresponds to the second target position, and the yarn joining device 14 corresponds to the third target position. In this case, the yarn drawing device 28 and the upper yarn catching member 36 may be provided in the work carriage, and the second catching member, the yarn joining device 14 and the lower yarn catching member 33 may be provided in each winding unit 10. The final guide destination of the yarn 20 may not be the yarn joining device 14 but may be a different position.

  The yarn drawing device 28 of the present invention is not limited to an automatic winder but can be applied to other yarn winding machines such as a winding machine and a spinning machine (for example, an air spinning machine and an open-end spinning machine). The yarn drawing device 28 can also be applied to a spinning machine having a configuration in which a yarn joining device is provided for each winding unit as described above. Alternatively, the yarn drawing device 28 can also be applied to a spinning machine having a configuration in which one yarn joining device is provided for each predetermined number of winding units. The pneumatic spinning machine forms a package by drafting a fiber bundle with a plurality of draft roller pairs, a spinning apparatus that produces a yarn by spinning the fiber bundle with a swirling air flow, and winding the yarn. A winding device. In such an air spinning machine, the winding device may be provided above in the machine height direction, or the draft device may be provided above. The yarn splicing device of the spinning machine is not limited to the mechanical configuration described above (for example, a knotter) or a configuration using a fluid such as compressed air (splicer), and may be a piecer. When the yarn joining device is a piecer, the yarn 20 drawn from the package 30 by the yarn drawing device 28 is sent back to the spinning device.

1 Automatic winder (yarn winding machine)
DESCRIPTION OF SYMBOLS 10 Winding unit 28 Thread drawing apparatus 30 Package 40 Main body part 36 Upper thread | yarn catch member (1st catch member)
50 1st injection part 50a 1st slit 51 1st spacer part 52 1st cover part 60 2nd injection part 60a 2nd slit 61 2nd spacer part 62 2nd cover part 91 1st airflow 92 2nd airflow

Claims (15)

In a thread drawing device that pulls out a thread from a package,
A first injection part which is formed with a first slit and generates a first air flow by injecting air from the first slit;
A second injecting section that has a second slit and generates a second air flow that flows in a direction different from the flow direction of the first air flow by injecting air from the second slit;
A yarn drawing device comprising: In a thread drawing device that pulls out a thread from a package,
The main body,
A first spacer portion, and a first cover portion, and a first slit is formed by disposing the first spacer portion between the first cover portion and the main body portion; A first injection unit that generates a first air flow by injecting air from the first slit;
A second spacer portion and a second cover portion are provided, and a second slit is formed by disposing the second spacer portion between the second cover portion and the first cover portion. A second injection unit that generates a second air flow by injecting air from the second slit;
A yarn drawing device comprising: The yarn drawing device according to claim 2,
The yarn drawing device, wherein a thickness of at least one of the first spacer portion and the second spacer portion is 0.01 mm or more and 5 mm or less. A yarn pulling device according to any one of claims 1 to 3,
A first inclined surface inclined to be connected to the proximal end of the flow of the first air flow and connected to the first slit;
A second inclined surface inclined to be connected to the proximal end of the flow of the second air flow and connected to the second slit;
At least one of them is provided. The yarn pulling device according to any one of claims 1 to 4,
The jet direction correction is such that the surface that guides the air before being jetted from the second slit is inclined such that the length in the short direction of the second slit becomes longer as it approaches the second slit. A thread drawing device having a surface. The yarn pulling device according to any one of claims 1 to 5,
A yarn pull-out provided on the downstream side in the flow direction of the first air flow, and having a guide portion for guiding the yarn drawn out from the package to the center side in the longitudinal direction of the first slit. apparatus. The yarn drawing device according to claim 6,
A first outer surface provided with the first slit and the second slit;
A second outer surface provided on the downstream side in the flow direction of the first air flow with respect to the first outer surface;
Have
The yarn drawing device, wherein the guide portion is provided on the second outer surface. The yarn drawing device according to claim 7,
The guide portion is formed with a first guide surface and a second guide surface that protrude from the second outer surface and are arranged to face each other.
The yarn drawing device according to claim 1, wherein a distance between the first guide surface and the second guide surface is increased as the distance from the first outer surface is approached. A yarn drawing device according to any one of claims 1 to 8,
A winding unit for winding the yarn to form the package by rotating the winding tube in the winding direction;
With
The flow direction of the first air flow is set so as to guide the yarn pulled out from the package to a first target position,
The yarn winding machine, wherein the flow direction of the second air flow is set so as to face the package. A yarn winding machine according to claim 9,
The winding unit is configured to be able to rotate the package in a reverse rotation direction that is opposite to the winding direction.
The yarn winding machine, wherein the second slit is formed downstream of the first slit in the reverse rotation direction of the package. The yarn winding machine according to claim 9 or 10,
A first catching member for catching the yarn drawn by the yarn drawing device;
The yarn winding machine, wherein the first target position is a capture position of the first capture member. The yarn winding machine according to claim 11,
The first catch member is configured to catch the yarn by sucking the yarn and guide the yarn to a second target position;
The suction force of the first catching member is set so that the suction force when catching the yarn is larger than the suction force when guiding the yarn to the second target position. Yarn winding machine. The yarn winding machine according to claim 11 or 12,
A yarn winding machine comprising: a second catching member that receives the yarn caught by the first catching member from the yarn drawing device and guides the yarn to a third target position. A yarn winding machine according to any one of claims 9 to 13,
A plurality of winding units each including at least the winding unit;
A work carriage provided movably with respect to the plurality of winding units;
With
The yarn winding machine, wherein the yarn drawing device is provided in the work carriage. A yarn winding machine according to any one of claims 9 to 13,
A plurality of winding units each including at least the winding unit;
The yarn winding machine, wherein the yarn drawing device is provided in each of the plurality of winding units.

Images