WO2020075382A1 - 糸巻取機 - Google Patents

糸巻取機 Download PDF

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Publication number
WO2020075382A1
WO2020075382A1 PCT/JP2019/031766 JP2019031766W WO2020075382A1 WO 2020075382 A1 WO2020075382 A1 WO 2020075382A1 JP 2019031766 W JP2019031766 W JP 2019031766W WO 2020075382 A1 WO2020075382 A1 WO 2020075382A1
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WO
WIPO (PCT)
Prior art keywords
yarn
unit
clamp cutter
movement
package
Prior art date
Application number
PCT/JP2019/031766
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
竹弘 岡田
志郎 播戸
欣三 橋本
Original Assignee
Ｔｍｔマシナリー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｔｍｔマシナリー株式会社 filed Critical Ｔｍｔマシナリー株式会社
Priority to CN201980059124.8A priority Critical patent/CN112672965B/zh
Priority to JP2020550000A priority patent/JP7035211B2/ja
Priority to EP19870352.2A priority patent/EP3865441B1/de
Publication of WO2020075382A1 publication Critical patent/WO2020075382A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/18—Driven rotary elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a yarn winding machine capable of automatically replacing a completed package with a new bobbin.
  • the yarn winding machine described in Patent Document 1 is configured to wind a yarn supplied from a yarn supplying section onto a bobbin to form a package.
  • this yarn winding machine a series of operations from replacing the completed package with a new bobbin and starting winding the yarn on the new bobbin is automated. Specifically, when the package is completed, the yarn between the yarn supplying unit and the package is cut by a cutter, and the yarn on the yarn supplying unit side is sucked and caught by the yarn catching pipe.
  • the clamp cutter moves in a direction approaching the bobbin holder.
  • the clamp cutter which cuts the yarn and grips the yarn on the yarn supplying portion side, retracts in a direction away from the bobbin holder in order to avoid interference with a newly set bobbin.
  • the yarn grasped by the clamp cutter is pulled, and the yarn is pulled out from the yarn supplying section.
  • the clamp cutter moves again toward the bobbin holder. At this time, the yarn pulled out from the yarn supplying portion may be loosened, and the yarn may not be properly guided to the yarn gripping portion.
  • an object of the present invention is to enable a clamp cutter to appropriately guide a thread to a thread gripping portion when a completed package is replaced with a new bobbin.
  • a yarn winding machine has a winding unit that winds a yarn supplied from a yarn supplying unit onto a bobbin to form a package, and is capable of automatically replacing the completed package with a new bobbin.
  • a bobbin holder that rotatably supports the bobbin and a thread between the yarn supplying section and the package when the package is replaced with a new bobbin and a thread on the yarn supplying section side.
  • a clamp cutter that guides the thread that is being gripped to the bobbin holder or the thread gripping portion that is formed on the bobbin, and a tensioning operation that removes the slack of the thread that is gripped by the clamp cutter and the thread.
  • the clamp cutter includes a yarn slack adjusting unit capable of loosening operation and a control unit controlling at least the operation of the yarn slack adjusting unit, and the clamp cutter includes the yarn supplying unit and the pad.
  • the clamp cutter when exchanging a completed package for a new bobbin, cuts and grips the thread, and then performs at least the first movement and the second movement to guide the thread to the thread gripping portion.
  • the clamp cutter moves in a direction having a movement component to one side in the orthogonal direction, and the yarn is pulled out from the yarn supplying section. Therefore, when the clamp cutter moves in the second movement in the direction having the movement component to the other side in the orthogonal direction, the yarn loosens. Therefore, in the present invention, the slack of the yarn is removed by causing the yarn slack adjusting unit to perform a tensioning operation after the clamp cutter starts the second movement and before the yarn is gripped by the yarn gripping portion. . Therefore, it is possible to solve the problem that the yarn cannot be properly guided to the yarn gripping portion because the yarn is slackened, and the yarn can be appropriately guided to the yarn gripping portion by the clamp cutter.
  • control section causes the thread slack adjusting section to perform the tensioning operation while the clamp cutter is performing the second movement.
  • the timing at which the thread slack adjusting section performs the tensioning operation after the completion of the second movement of the clamp cutter.
  • the loosened yarn may be caught by another member during the second movement of the clamp cutter, and thus the guide of the yarn to the yarn gripping portion may fail.
  • the clamp cutter since the slack of the yarn can be removed during the second movement of the clamp cutter, the clamp cutter can reliably guide the yarn to the yarn gripping portion.
  • the clamp cutter is configured to cut and grasp a yarn between the yarn supplying unit and the package after the package moves in a direction of drawing the yarn from the yarn supplying unit
  • the control unit may cause the yarn slack adjusting unit to perform the loosening operation until the yarn is cut by the clamp cutter after the package moves in the direction of drawing the yarn from the yarn supplying unit.
  • the tension of the yarn between the yarn feeder and the package becomes excessive and the yarn is cut by the clamp cutter. There is a risk of running away.
  • the tension of the yarn can be reduced before the yarn is cut by the clamp cutter, so that the clamp cutter can reliably grasp the yarn.
  • control section causes the thread slack adjusting section to perform the loosening operation while the clamp cutter is performing the first movement.
  • the tension of the yarn becomes excessive and the yarn may come off from the clamp cutter.
  • the tension of the yarn during the first movement of the clamp cutter can be reduced, so that the yarn can be prevented from coming off the clamp cutter during the first movement.
  • the clamp cutter removes the yarn from the yarn supplying unit along the axial direction after cutting and gripping the yarn between the yarn supplying unit and the package and before the second movement.
  • the control unit is configured to further perform a third movement of moving in the pulling-out direction, and the control unit causes the yarn slack adjusting unit to perform the loosening operation while the clamp cutter is performing the third movement. Good.
  • a tension detecting unit that detects the tension of the yarn is arranged between the yarn supplying unit and the winding unit in the yarn traveling direction, and the control unit controls the second movement of the clamp cutter.
  • the operation of the yarn slack adjusting unit is controlled so that the tension detected by the tension detecting unit is maintained at a predetermined first threshold value or more until the yarn is grasped by the yarn grasping unit after the start of Good to do.
  • the first threshold value is appropriately set, it is possible to maintain a state in which the yarn is not loosened during the second movement of the clamp cutter. Therefore, the yarn can be reliably guided to the yarn gripping portion by the clamp cutter.
  • control unit is configured such that the tension detected by the tension detecting unit is the first threshold value until the yarn is gripped by the yarn gripping unit after the clamp cutter starts the second movement.
  • the operation of the yarn slack adjusting unit may be controlled so as to be maintained at a predetermined second threshold value that is larger than the predetermined second threshold value.
  • the yarn slack adjusting unit is only controlled so that the yarn tension is maintained at the first threshold value or more, the yarn tension becomes excessive and the yarn may come off from the clamp cutter. .
  • the second threshold value by appropriately setting the upper limit of the tension of the yarn during the second movement of the clamp cutter, that is, the second threshold value, it is possible to prevent the yarn from coming off the clamp cutter during the second movement. It can be prevented.
  • the clamp cutter is configured to cut and grasp a yarn between the yarn supplying unit and the package after the package moves in a direction of drawing the yarn from the yarn supplying unit
  • the control unit controls the tension detected by the tension detection unit to be equal to or less than a predetermined third threshold value until the yarn is cut by the clamp cutter after the package moves in the direction of pulling the yarn from the yarn supplying unit.
  • the yarn slack adjusting section may be caused to perform the slackening operation so that
  • the tension of the yarn between the yarn feeder and the package becomes excessive and the yarn is cut by the clamp cutter. There is a risk of running away.
  • the tension of the yarn can be reduced before the yarn is cut by the clamp cutter, so that the clamp cutter can reliably grasp the yarn.
  • control unit controls the yarn slack adjusting unit so that the tension detected by the tension detecting unit is maintained at a predetermined fourth threshold value or less while the clamp cutter is performing the first movement. You should control the operation of.
  • the tension of the yarn during the first movement of the clamp cutter can be reduced by appropriately setting the fourth threshold, and thus the yarn can be prevented from coming off from the clamp cutter during the first movement.
  • the clamp cutter removes the yarn from the yarn supplying unit along the axial direction after cutting and gripping the yarn between the yarn supplying unit and the package and before the second movement. It is configured to further perform a third movement of moving in the pulling-out direction, and the control unit controls the tension detected by the tension detection unit while the clamp cutter is performing the third movement.
  • the operation of the yarn slack adjusting unit may be controlled so as to be maintained below the threshold value.
  • a feed roller capable of rotating in the forward and reverse directions is arranged between the yarn supplying section and the winding section in the yarn traveling direction, and the feed roller may function as the yarn slack adjusting section.
  • the thread gripping portion includes a support portion that supports the end portion of the bobbin in the axial direction, a contact position that abuts the support portion, and a separated position that is separated from the support portion in the axial direction.
  • a movable part movable between the movable part and the movable part, and the movable part is arranged in the gap between the movable part and the support part in a state where the movable part is located at the separated position.
  • the yarn may be gripped by moving to the contact position.
  • the present invention that can remove the looseness of the yarn is particularly effective.
  • FIG. 1 is a schematic diagram of the rewinder 1 according to the present embodiment as viewed from the front.
  • FIG. 2 is a diagram showing an electrical configuration of the rewinder 1 according to this embodiment.
  • the vertical direction and the horizontal direction shown in FIG. 1 are the vertical direction and the horizontal direction of the rewinder 1, respectively.
  • the direction orthogonal to both the up-down direction and the left-right direction is the front-back direction.
  • the traveling direction of the yarn Y is referred to as a yarn traveling direction.
  • the rewinder 1 has a machine stand 10, a yarn supplying section 11, a winding section 12, a bobbin supplying device 13, a control section 14, and the like.
  • the rewinder 1 unwinds the yarn Y from the yarn supplying package Ps provided in the yarn supplying section 11, and winds the unwound yarn Y around the bobbin B in the winding section 12 to form the package P.
  • the rewinder 1 is used to cleanly rewind the yarn Y wound around the yarn supplying package Ps or form a package P having a desired density.
  • the yarn supplying section 11 is provided in the lower portion of the vertically long machine base 10 and supplies the yarn Y to the winding section 12.
  • the yarn supplying section 11 supports the yarn supplying package Ps in a state where the yarn Y can be unwound from the yarn supplying package Ps.
  • a yarn guide 15, a feed roller 16, a yarn guide 17, a tension applying device 18, and a tension detection sensor 19 are arranged in this order from the upstream side between the yarn supplying section 11 and the winding section 12 in the yarn traveling direction. ing.
  • the yarn Y unwound from the yarn supply package Ps is supplied to the winding unit 12 via the yarn guide 15, the feed roller 16, the yarn guide 17, the tension applying device 18, and the tension detection sensor 19.
  • the yarn guides 15 and 17 are guides that define the yarn path, and are arranged, for example, on an extension of the central axis of the yarn supply package Ps.
  • the feed roller 16 (yarn slack adjusting unit of the present invention) is configured to be normally and reversely rotatable by a roller driving motor 41 (see FIG. 2) that is a stepping motor that is normally and reversely rotatable.
  • the roller drive motor 41 is controlled by the control unit 14.
  • the tension applying device 18 is a device for applying a tension to the yarn Y.
  • the tension applying device 18 is configured to apply tension to the yarn Y by sandwiching the traveling yarn Y.
  • the tension detection sensor 19 detects the tension of the yarn Y between the yarn supplying unit 11 and the winding unit 12 in the yarn traveling direction. The tension of the yarn Y detected by the tension detection sensor 19 is sent to the control unit 14.
  • the tension detection sensor 19 functions as a traverse fulcrum when the yarn Y is traversed by the traverse device 23 described later.
  • the winding unit 12 is provided on the upper part of the machine base 10 and winds the yarn Y supplied from the yarn supplying unit 11 onto the bobbin B to form the package P.
  • the winding unit 12 includes a pair of left and right cradle arms 21, a pair of left and right bobbin holders 22, a traverse device 23, contact rollers 24, and the like.
  • FIG. 3 is (a) a front view and (b) a side view showing the support structure of the package P.
  • the cradle arm 21 is an arm-shaped member that is arranged in two in the left-right direction, and rotatably supports the package P (bobbin B) by the pair of left and right cradle arms 21.
  • a bobbin holder 22 is provided at the tip of each cradle arm 21, and the pair of left and right bobbin holders 22 rotatably support the package P (bobbin B).
  • the cradle arm 21 is configured to be swingable by a cradle drive motor 42 (see FIG. 2) about a swing shaft 21a extending in the left-right direction.
  • the cradle drive motor 42 is controlled by the control unit 14.
  • the package P (bobbin B) supported by the cradle arm 21 swings to a winding position (see a solid line in FIG. 3B) substantially below the swing shaft 21a. It is movable between a doffing position (see the alternate long and short dash line in FIG. 3B) substantially behind the moving shaft 21a.
  • the package P (bobbin B) is located at the winding position, the yarn Y is wound around the package P (bobbin B).
  • the package P is removed from the cradle arm 21, and the package P is doffed in the storage section 29 provided at the rear of the machine base 10.
  • the bobbin holder 22 has a shaft portion 25 extending in the axial direction (left-right direction) and a disc-shaped support portion 26 attached to a tip end portion (end portion on the inner side in the axial direction) of the shaft portion 25.
  • the shaft portion 25 has a base end portion (end portion on the outer side in the axial direction) attached to the cradle arm 21 via a bearing (not shown), and is configured to be rotatable around the axis by the winding motor 43 (see FIG. 2). Has been done.
  • the winding motor 43 is controlled by the control unit 14.
  • the shaft portion 25 of the bobbin holder 22 is configured to be extendable / contractible in the axial direction by an extension / contraction drive unit 44 (see FIG. 2) including, for example, a cylinder.
  • the expansion / contraction drive unit 44 is controlled by the control unit 14.
  • the left and right shaft portions 25 extend, the left and right support portions 26 approach each other, and the bobbin holder 22 can support both end portions of the bobbin B in the axial direction.
  • the left and right shaft portions 25 contract, the left and right support portions 26 move away from each other, and the package P can be removed from the bobbin holder 22.
  • the bobbin holder 22 on the right side further has a ring-shaped movable portion 27 fitted on the shaft portion 25 on the right side (axial outer side) of the support portion 26, and the thread gripping portion is supported by the support portion 26 and the movable portion 27. 28 are configured.
  • the movable portion 27 is configured to be movable in the axial direction by a yarn gripping drive portion 45 (see FIG. 2) including, for example, a cylinder.
  • the movable portion 27 is in contact with the support portion 26 (see FIG. 1) and the support portion. It moves to and from a separated position (see FIG. 3A) separated from 26.
  • the yarn gripping drive unit 45 is controlled by the control unit 14.
  • the yarn Y When starting the winding of the yarn Y on the new bobbin B, first, the yarn Y is arranged in the gap between the support portion 26 and the movable portion 27 with the movable portion 27 positioned at the separated position, and then the movable portion 27 is moved. By moving the portion 27 to the contact position and sandwiching the yarn Y between the support portion 26 and the movable portion 27, the yarn Y can be held by the yarn holding portion 28.
  • the traverse device 23 is a device for traversing the yarn Y in the left-right direction.
  • the traverse device 23 has a structure in which a traverse guide 35 is attached to an endless belt 34 wound around a plurality of pulleys 31 to 33.
  • the pulley 31 is configured as a drive pulley and is controlled by the control unit 14.
  • the traverse guide 35 is attached to a portion of the endless belt 34 that extends in the left-right direction.
  • the endless belt 34 is reciprocally driven by the drive pulley 31, whereby the traverse guide 35 reciprocates in the left-right direction.
  • the yarn Y engaged with the traverse guide 35 can be traversed in the left-right direction using the tension detection sensor 19 as a traverse fulcrum.
  • the contact roller 24 is arranged so as to come into contact with the package P that is winding the yarn Y, and is driven to rotate as the package P rotates. This makes it possible to apply a contact pressure to the surface of the package P and arrange the shape of the package P.
  • the rewinder 1 is further provided with a bobbin supplying device 13.
  • the bobbin supply device 13 is attached to the uppermost part of the machine base 10 and supplies a new bobbin B when the completed package P is replaced with a new bobbin B.
  • the bobbin supplying device 13 is controlled by the control unit 14. It should be noted that the bobbin supplying device 13 is not shown except for FIG.
  • the rewinder 1 is configured so that the completed package P can be automatically replaced with a new bobbin B. For that purpose, it is necessary to cut the yarn Y between the package P and the yarn supplying portion 11 (yarn supplying package Ps) and cause the yarn holding portion 28 of the bobbin holder 22 to hold the yarn Y on the yarn supplying portion 11 side. .
  • the rewinder 1 is provided with a clamp cutter 50 for cutting and gripping the yarn Y and guiding it to the yarn gripping portion 28.
  • FIG. 4 is a top view of the front end portion of the thread hooking arm 51 having the clamp cutter 50.
  • FIG. 5 is a sectional view of the clamp cutter 50.
  • the clamp cutter 50 is attached to the front end of a thread hooking arm 51 extending in the front-rear direction.
  • the thread hooking arm 51 is configured to be movable in the front-rear direction and the left-right direction by an arm driving unit 52 (see FIG. 2) including, for example, a cylinder.
  • the arm drive unit 52 is controlled by the control unit 14.
  • a guide groove 51 a for guiding the yarn Y to the clamp cutter 50 is formed at the front end of the yarn hooking arm 51.
  • the front end of the guide groove 51a is open to the right, and the yarn Y can be introduced into the guide groove 51a from here and guided to the clamp cutter 50.
  • the clamp cutter 50 is configured to have a fixed blade 53, a movable blade 54, and a grip member 55.
  • the fixed blade 53 is fixed to the thread hooking arm 51.
  • the movable blade 54 is arranged below the fixed blade 53, and is configured to rotate in a horizontal plane by a cutter driving unit 56 (see FIG. 2).
  • the cutter driving unit 56 is controlled by the control unit 14.
  • the grip member 55 is a plate-like member that is fixed to the thread hooking arm 51 below the movable blade 54.
  • the rewinder 1 of this embodiment is configured such that the completed package P can be automatically replaced with a new bobbin B.
  • a series of bobbin exchange operations from the completion of the package P to the start of winding the yarn Y on the new bobbin B will be described.
  • 6 and 7 are flowcharts showing the bobbin exchange operation.
  • 8 to 11 are schematic diagrams showing the bobbin exchange operation, in which the left side view of each figure is a front view and the right side view is a side view.
  • the control unit 14 stops the winding motor 43 to stop winding the yarn Y and also stops the rotation of the feed roller 16 (step S10, FIG. 8A).
  • the traverse guide 35 is stopped at a position slightly to the right of the center of the package P in the left-right direction.
  • the clamp cutter 50 thread hooking arm 51
  • the stop position of the traverse guide 35 and the standby position of the clamp cutter 50 are not limited to the above positions.
  • the control unit 14 raises the package P by swinging the cradle arm 21 forward (step S11, FIG. 8B).
  • the reason why the package P is raised is that the clamp cutter 50 attached to the yarn hooking arm 51, which can move only forward, backward, leftward and rightward, can move below the package P. As a result, the clamp cutter 50 can cut and grip the yarn Y between the package P and the yarn supplying section 11.
  • the yarn path between the tension detection sensor 19 that functions as a traverse fulcrum and the package P becomes longer. Therefore, when the package P is raised, the yarn Y may be pulled out from the yarn supplying package Ps while being pulled, and the tension of the yarn Y may become excessive. When the yarn Y having excessive tension is cut by the clamp cutter 50, the yarn Y easily escapes from the clamp cutter 50 at the moment of cutting, and the yarn Y tends to fail to be gripped.
  • T1 third threshold value of the present invention
  • step S12 When the tension of the yarn Y becomes equal to or less than T1 (YES in step S12), the control unit 14 moves the yarn hooking arm 51 forward and rightward to move the clamp cutter 50 to the cutting position below the package P and on the yarn path. To (step S14). Then, the yarn Y between the package P and the yarn supplying unit 11 is cut by the clamp cutter 50, and the clamp cutter 50 holds the yarn Y on the yarn supplying unit 11 side (step S15, FIG. 9A). It should be noted that steps S12 and S13 may be executed at appropriate timing after execution of step S11 and before execution of step S15. That is, steps S12 and S13 can be executed during execution of step S14 or after execution of step S14.
  • a new bobbin B is mounted following the doffing of the package P (step S16). Specifically, first, the control unit 14 swings the cradle arm 21 rearward to position the package P above the storage unit 29 (FIG. 9B). In this state, the bobbin holder 22 is driven to remove the package P from the cradle arm 21, so that the package P can be doffed in the storage part 29 (FIG. 10A). When the doffing is completed, the control unit 14 returns the cradle arm 21 slightly forward and mounts a new bobbin B supplied from the bobbin supplying device 13 on the cradle arm 21 (bobbin holder 22) (FIG. 10 (b)). . When the new bobbin B is attached, the control unit 14 sets the thread gripping unit 28 of the right bobbin holder 22 to the open state (the movable unit 27 is separated from the support unit 26).
  • the control unit 14 moves the clamp cutter 50 rearward from the cutting position while doffing the package P and mounting a new bobbin B (first movement of the present invention, FIG. 9B ⁇ 10 (a)), it is moved to the right along the axial direction (the third movement of the present invention, FIG. 10 (a) ⁇ FIG. 10 (b)) (step S17).
  • FIGS. 6 and 7 are flowcharts in which steps S17 to S20 are executed after step S16, it is assumed that steps S17 to S20 are actually executed during execution of step S16. However, steps S17 to S20 may be executed at appropriate timing after execution of step S15 and before execution of step S22.
  • the reason why the clamp cutter 50 is moved backward in step S17 is to prevent the clamp cutter 50 from interfering with the bobbin B when the bobbin B is moved to the winding position in step S22 described later.
  • the position in the left-right direction after moving the clap cutter 50 to the right is approximately the same position as the gap between the support portion 26 and the movable portion 27 of the bobbin holder 22.
  • the traverse guide 35 is also moved to the right.
  • the clamp cutter 50 may be moved to the right and then to the rear, or may be moved diagonally to the right and to the rear.
  • the yarn path between the tension detection sensor 19 and the clamp cutter 50 becomes longer. Therefore, when the clamp cutter 50 is moved, the yarn Y may be pulled out from the yarn supplying package Ps while being pulled, and the tension of the yarn Y may become excessive. As a result, the yarn Y may come off the clamp cutter 50.
  • the tension of the yarn Y detected by the tension detection sensor 19 during the backward and rightward movement of the clamp cutter 50 is equal to or less than a preset T2 (fourth threshold value of the present invention). It is determined whether or not (step S18). As a result, when the tension of the yarn Y exceeds T2 (NO in step S18), the feed roller 16 is rotated forward (step S19) to feed the yarn Y to the clamp cutter 50 side, Reduce tension. By continuing to monitor the tension of the yarn Y during the movement of the clamp cutter 50 (NO in step S20 ⁇ step S18), the tension of the yarn Y during the movement of the clamp cutter 50 can be maintained at T2 or less. T2 is appropriately set according to the type of the yarn Y, but may be about 2 grams in the case of false twisted yarn, for example.
  • step S20 When the movement of the clamp cutter 50 to the rear and to the right is completed (YES in step S20), the controller 14 swings the cradle arm 21 forward and downward to move the new bobbin B to the winding position. (Step S21, FIG. 11A). Subsequently, the control unit 14 moves the clamp cutter 50 forward (second movement of the present invention, FIG. 11A ⁇ FIG. 11B) (step S22). As a result, the yarn Y grasped by the clamp cutter 50 can be guided to the yarn grasping portion 28, more specifically, the gap between the support portion 26 and the movable portion 27.
  • the yarn path between the tension detection sensor 19 and the clamp cutter 50 becomes shorter. Therefore, the yarn Y pulled out from the yarn supplying package Ps when the clamp cutter 50 is moved rearward and rightward becomes slack when the clamp cutter 50 moves forward.
  • the yarn Y gripped by the clamp cutter 50 is loosened, the yarn Y cannot be guided by the clamp cutter 50 into the minute gap between the support portion 26 and the movable portion 27, and the yarn hooking on the bobbin holder 22 fails. It will be easier.
  • step S23 it is determined whether the tension of the yarn Y detected by the tension detection sensor 19 during the forward movement of the clamp cutter 50 is equal to or more than a preset T3 (first threshold value of the present invention). A judgment is made (step S23). As a result, when the tension of the yarn Y is less than T3 (NO in step S23), the feed roller 16 is reversed (step S24) to feed the yarn Y to the yarn supplying section 11 side and loosen the yarn Y. To remove. As a result, the yarn Y can be appropriately guided to the yarn gripping portion 28 (a gap between the support portion 26 and the movable portion 27).
  • step S25 it is determined whether the tension of the yarn Y detected by the tension detection sensor 19 is equal to or lower than a preset T4 (second threshold value of the present invention) (step S25).
  • T4 second threshold value of the present invention
  • T3 and T4 are appropriately set according to the type of the yarn Y. For example, in the case of a false twist textured yarn, T3 may be about 2 grams and T4 may be about 5 grams.
  • step S27 When the forward movement of the clamp cutter 50 is completed (YES in step S27), the yarn Y gripped by the clamp cutter 50 is placed in the gap between the support portion 26 and the movable portion 27.
  • the control unit 14 holds the yarn Y by the yarn gripping unit 28 by bringing the movable unit 27 into contact with the support unit 26, and releases the gripping of the yarn Y by the clamp cutter 50 (step S28, FIG. 12 (a)).
  • the control unit 14 moves the clamp cutter 50 to the standby position (FIG. 12 (b)). Further, the control unit 14 restarts the winding of the yarn Y on the new bobbin B by rotating the bobbin holder 22, rotating the feed roller 16 in the forward direction, and further reciprocally driving the traverse guide 35 (step S29). ).
  • the backward movement of the clamp cutter 50 from the cutting position corresponds to the “first movement” of the present invention
  • the rightward movement subsequent to the first movement corresponds to the “third movement” of the present invention
  • the forward movement subsequent to the third movement corresponds to the “second movement” of the present invention.
  • the operation of removing the slack of the yarn Y by the reverse rotation of the feed roller 16 corresponds to the "tension operation” of the present invention
  • the operation of loosening the yarn Y by the normal rotation of the feed roller 16 of the present invention corresponds to "relaxation motion".
  • the control unit 14 is detected by the tension detecting sensor 19 (tension detecting unit) after the clamp cutter 50 starts the second movement until the yarn Y is grasped by the yarn grasping unit 28.
  • the operation of the feed roller 16 (yarn slack adjusting unit) is controlled so that the tension is maintained at T3 (first threshold value) or more.
  • T3 first threshold value
  • the controller 14 determines that the tension detected by the tension detecting sensor 19 is higher than T3 until the yarn Y is gripped by the yarn grip 28.
  • the operation of the feed roller 16 is controlled so as to be maintained below a large T4 (second threshold value). If the feed roller 16 is only controlled so that the tension of the yarn Y is maintained at T1 or more during the second movement of the clamp cutter 50, the tension of the yarn Y becomes excessive and the yarn Y may come off from the clamp cutter 50. There is. In this respect, as described above, by appropriately setting the upper limit of the tension of the yarn Y during the second movement of the clamp cutter 50, that is, T4, the yarn Y is disengaged from the clamp cutter 50 during the second movement. Can be prevented.
  • the control unit 14 detects by the tension detection sensor 19 until the yarn Y is cut by the clamp cutter 50 after the package P moves in the direction (upward) of pulling out the yarn Y from the yarn supplying unit 11.
  • the feed roller 16 is caused to perform a loosening operation so that the applied tension becomes equal to or lower than T1 (third threshold value).
  • T1 third threshold value
  • the control unit 14 controls the feed roller 16 so that the tension detected by the tension detection sensor 19 is maintained at T2 (fourth threshold value) or less while the clamp cutter 50 is performing the first movement. Control movements.
  • T2 fourth threshold value
  • the tension of the yarn Y becomes excessive and the yarn Y may come off from the clamp cutter 50.
  • the tension of the yarn Y during the first movement of the clamp cutter 50 can be reduced by appropriately setting T2, so that the yarn Y is prevented from coming off from the clamp cutter 50 during the first movement. It can be prevented.
  • the control unit 14 controls the feed roller 16 so that the tension detected by the tension detection sensor 19 is maintained at T2 (fourth threshold value) or less while the clamp cutter 50 is performing the third movement. Control movements.
  • T2 fourth threshold value
  • the tension of the yarn Y becomes excessive and the yarn Y may come off from the clamp cutter 50.
  • the tension of the yarn Y during the third movement of the clamp cutter 50 can be reduced by appropriately setting T2, so that the yarn Y may be detached from the clamp cutter 50 during the first movement. Can be prevented
  • the feed roller 16 which is arranged between the yarn supplying section 11 and the winding section 12 in the yarn traveling direction and which can rotate in the forward and reverse directions is used.
  • the feed roller 16 is originally provided in the rewinder 1. Therefore, by using the feed roller 16 as the yarn slack adjusting unit, it is not necessary to add a new device, and the cost can be reduced.
  • the thread gripping portion 28 includes a support portion 26 that supports the axial end portion of the bobbin B, a contact position that abuts the support portion 26, and a separation position that is axially separated from the support portion 26.
  • the movable portion 27 is The yarn Y is grasped by moving to the contact position. As described above, when guiding the yarn Y grasped by the clamp cutter 50 to the narrow gap, the present invention capable of removing the slack of the yarn Y is particularly effective.
  • the operation of the feed roller 16 is controlled based on the tension of the yarn Y detected by the tension detection sensor 19, but it is not essential to control the feed roller 16 based on the tension of the yarn Y. Absent.
  • the rotation amount for rotating the feed roller 16 in the forward direction or the reverse direction may be determined in advance based on the slack amount and the tension of the yarn Y predicted in advance. In this case, it suffices to rotate the feed roller 16 forward or backward by a predetermined amount at an appropriate timing, which facilitates the control of the feed roller 16 in the bobbin exchange operation.
  • the movement of the clamp cutter 50 from the cutting position to the rear corresponds to the “first movement” of the present invention.
  • the moving direction of the clamp cutter 50 in the first movement may be diagonally rearward in which the rearward moving component is combined with the leftward and rightward moving component.
  • the forward movement of the clamp cutter 50 toward the thread gripping portion 28 corresponds to the “second movement” of the present invention.
  • the moving direction of the clamp cutter 50 in the second movement may be diagonally forward, in which the forward moving component is combined with the left-right moving component.
  • the thread hooking arm 51 provided with the clamp cutter 50 is configured to be movable in the front-rear direction and the left-right direction.
  • the configuration of the thread hooking arm 51 is not limited to this as long as the clamp cutter 50 can be moved appropriately.
  • the thread hooking arm 51 may be configured to be movable in the vertical direction or may be configured to be swingable.
  • the feed roller 16 functions as the “thread slack adjusting unit” of the present invention.
  • the yarn slack adjusting unit may have another configuration.
  • the thread pressing mechanism 60 shown in FIG. 13 may be used as the thread slack adjusting section.
  • This thread holding mechanism 60 is arranged between suitable thread guides 68 and 69.
  • the yarn pressing mechanism 60 includes an arm 61, a swing shaft 62 provided at the base end of the arm 61, and a roller 63 provided at the tip of the arm 61. By swinging the arm 61 around the swing shaft 62, the degree to which the yarn Y is pressed by the roller 63 can be adjusted.
  • the slack of the yarn Y can be removed by swinging the arm 61 to the left side of the figure, and the yarn Y can be loosened by swinging the arm 61 to the right side of the figure.
  • the tension applying device 18 (see FIG. 1) sandwiching the yarn Y is vertically movable, the tension applying device 18 can be used as a yarn slack adjusting unit.
  • the thread grip portion 28 is configured to include the support portion 26 provided on the bobbin holder 22 and the movable portion 27.
  • the specific configuration of the thread grip portion is not limited to this.
  • a slit may be formed on the peripheral surface of the bobbin B, and the yarn Y may be guided to the slit by the clamp cutter 50 and hooked.
  • the slit formed on the bobbin B corresponds to the thread grip portion of the present invention.
  • the yarn winding machine according to the present invention is applied to the rewinder 1.
  • the present invention can be applied to other yarn winding machines.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Winding Filamentary Materials (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
PCT/JP2019/031766 2018-10-09 2019-08-09 糸巻取機 WO2020075382A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201980059124.8A CN112672965B (zh) 2018-10-09 2019-08-09 纱线卷取机
JP2020550000A JP7035211B2 (ja) 2018-10-09 2019-08-09 糸巻取機
EP19870352.2A EP3865441B1 (de) 2018-10-09 2019-08-09 Garnwicklungsmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018190594 2018-10-09
JP2018-190594 2018-10-09

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WO2020075382A1 true WO2020075382A1 (ja) 2020-04-16

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EP (1) EP3865441B1 (de)
JP (1) JP7035211B2 (de)
CN (1) CN112672965B (de)
TW (1) TWI766186B (de)
WO (1) WO2020075382A1 (de)

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IT202200015183A1 (it) * 2022-07-20 2024-01-20 Savio Macch Tessili Spa Unità di roccatura munita di un dispositivo tendifilo di un filato, e relativo metodo di controllo
CN117049267B (zh) * 2023-10-12 2024-01-26 江苏高倍智能装备有限公司 一种自动化碳纤维打纱机
CN117125546B (zh) * 2023-10-20 2024-02-09 宿迁万诚纺织有限公司 一种纺棉纱线卷绕装置

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Publication number Publication date
CN112672965A (zh) 2021-04-16
JPWO2020075382A1 (ja) 2021-09-02
CN112672965B (zh) 2022-08-16
TWI766186B (zh) 2022-06-01
EP3865441A1 (de) 2021-08-18
EP3865441A4 (de) 2022-09-07
TW202014367A (zh) 2020-04-16
EP3865441B1 (de) 2023-07-12
JP7035211B2 (ja) 2022-03-14

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