JP2014024655A - Yarn winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winder capable of accurately measuring the fluff amount of a yarn feeding bobbin considering residual yarn amount estimated from an unwinding position of the yarn feeding bobbin.SOLUTION: An automatic winder (a yarn winder) includes: a carrying tray 39; a chase portion detection sensor 74; a yarn quality measuring deice; and a yarn quality inspection portion. In the carrying tray 39, a yarn feeding bobbin 15 is set. The chase portion detection sensor 74 detects an unwinding position of the yarn feeding bobbin 15 set in the carrying tray 39. The yarn quality measuring device measures the yarn quality of the yarn unwound from the yarn feeding bobbin 15. The yarn quality inspection portion manages the yarn quality on the basis of the unwinding position detected by the chase portion detection sensor 74, and the yarn quality measured by the yarn quality measuring device.

Description

  The present invention mainly relates to a yarn winding machine including a yarn quality measuring unit.

  Conventionally, a spinning machine that winds the spun yarn to generate a yarn feeding bobbin, an automatic winder that unwinds the yarn from the yarn feeding bobbin to form a package, and a spinning unit of the spinning machine to a winding unit of the automatic winder. There is known a spinning winder including a bobbin transport mechanism that automatically transports a yarn feeding bobbin. Patent document 1 discloses this kind of fine spinning winder.

  The automatic winder included in the fine spinning winder of Patent Document 1 includes a fluff detection unit that detects the amount of fluff of a yarn for each winding unit. The automatic winder detects the unwinding length indicating how much the yarn has been unwound from the yarn supplying bobbin based on the number of rotations of the winding drum and the like.

  By the way, it is known that the amount of fluff of the yarn unwound from the yarn feeding bobbin tends to increase according to the length of the unwinding yarn (see FIG. 5 described later). In this regard, the automatic winder of Patent Document 1 associates the fluff amount with the unwinding yarn length. Therefore, it is usually possible to specify whether the fluff amount increases due to the long unwinding length or whether the fluff amount increases due to other factors (humidity, damage to members, etc.).

  The automatic winder disclosed in Patent Document 2 includes a unwinding assist device that assists in unwinding the yarn from the yarn supplying bobbin. The unwinding assisting device includes a unwinding member and a sensor that detects a chase portion that is a yarn layer end portion of the yarn supplying bobbin. With this configuration, the unwinding member can be lowered in accordance with the change in the position of the chase portion accompanying the unwinding of the yarn.

JP 2011-20837 A JP 2009-149404 A

  However, the yarn supplying bobbin supplied to the automatic winder is not always sufficiently wound with the yarn. For example, when the automatic winder discharges the yarn feeding bobbin in the middle of unwinding but there is no problem with the quality of the yarn feeding bobbin, a yarn feeding bobbin with an insufficient remaining yarn amount may be supplied.

  In this case, in the configuration of Patent Document 1, it cannot be specified that the remaining yarn amount of the yarn supplying bobbin is not sufficient, and therefore, it is handled in the same manner as when a yarn supplying bobbin sufficiently wound with a yarn is supplied. Therefore, in the configuration of Patent Document 1, even if it is determined that the amount of fluff is large, a situation where the unwinding length is simply long may occur. That is, conventionally, the cause of the increase in the amount of fluff could not be accurately identified.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to perform a yarn winding for accurately inspecting the fluff amount of a yarn feeding bobbin in consideration of the remaining yarn amount estimated from the unwinding position of the yarn feeding bobbin. Is to provide a machine.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine includes a bobbin setting unit, a unwinding position detection unit, a yarn quality measurement unit, and a yarn quality inspection unit. In the bobbin setting unit, a yarn feeding bobbin is set. The unwinding position detection unit detects the unwinding position of the yarn feeding bobbin set in the bobbin setting unit. The yarn quality measuring unit measures the yarn quality of the yarn unwound from the yarn feeding bobbin. The yarn quality inspection unit manages the yarn quality based on the unwinding position detected by the unwinding position detecting unit and the yarn quality measured by the yarn quality measuring unit.

  As a result, even when a yarn feeding bobbin with an insufficient remaining yarn amount is supplied, the unwinding position of the yarn feeding bobbin at the time of measuring the yarn quality can be specified. Therefore, it is possible to appropriately inspect the yarn quality in consideration of the unwinding position. Accordingly, measurement of the yarn quality outside the production line can be omitted.

  In the yarn winding machine, the unwinding position detection unit detects the chase portion by moving following the change in the position of the chase portion that is the yarn layer end portion of the yarn feeding bobbin during the unwinding operation. It is preferable to provide a chase part detection sensor.

  Thereby, since the chase part detection sensor also serves as a part of the unwinding position detection part, it is not necessary to provide a new sensor or the like as the unwinding position detection part. Therefore, the configuration of the yarn winding machine can be simplified and the cost can be reduced.

  The yarn winding machine preferably includes a notification unit that notifies abnormality of the yarn quality based on the inspection result of the yarn quality inspection unit.

  As a result, the operator can grasp the winding unit in which an abnormality has occurred, and therefore can take an action at an early stage according to the cause of the deterioration of the yarn quality.

  The yarn winding machine preferably includes a bobbin replacement instruction unit that instructs replacement of the yarn feeding bobbin based on the inspection result of the yarn quality inspection unit.

  Thereby, it can prevent winding a thread | yarn with bad thread | yarn quality continuing.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a generation tendency calculation unit that determines a generation tendency of the yarn quality based on the inspection results of the plurality of yarn quality inspection units. The yarn quality inspection unit inspects the quality of the yarn based on the occurrence tendency.

  Thereby, it is possible to distinguish whether the yarn quality is deteriorated only in some winding units or whether the yarn quality is deteriorated in all winding units. Therefore, the cause of the deterioration of the yarn quality can be easily identified.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a unwinding assisting device that assists unwinding of the yarn of the yarn supplying bobbin by moving the unwinding member following the change in the position of the chase portion. The unwinding assisting device includes a stepping motor that moves the unwinding member and a stepping motor control unit that controls driving of the stepping motor. The stepping motor control unit includes a count unit that counts the number of pulses transmitted to drive the stepping motor. The unwinding position detection unit further includes the stepping motor control unit and the counting unit.

  As a result, the unwinding position can be detected based on the number of pulses transmitted until the chase portion detection sensor detects the chase portion. In addition, since the unpacking position can be detected simply by counting the number of pulses, the processing can be simplified.

  In the yarn winding machine, it is preferable that a plurality of unwinding position detection units are provided in the unwinding direction and include a remaining yarn amount sensor that detects the unwinding position of the yarn feeding bobbin.

  Thereby, for example, the position of the yarn layer end portion of the yarn supplying bobbin can be estimated based on the number of remaining yarn amount sensors detecting the yarn layer of the yarn supplying bobbin. Accordingly, the unwinding position can be detected even when the unwinding assisting device is configured not to follow the change in the position of the chase portion.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine assists the unwinding of the yarn of the yarn supplying bobbin by moving the unwinding member following the change in the position of the chase portion that is the yarn layer end portion of the yarn supplying bobbin. Equipped with an unwinding assisting device. The remaining yarn amount sensor detects the unwinding position of the yarn supplying bobbin by detecting the position of the unwinding member or a member that moves integrally with the unwinding member.

  Thereby, the unwinding position can be directly detected by detecting the position of the unwinding member or a member that moves integrally with the unwinding member.

  The yarn winding machine preferably has the following configuration. That is, the yarn supplying bobbin is wound with a yarn by a spinning machine including a plurality of spinning units. The bobbin setting unit is movable along a conveyance path in a state where the yarn feeding bobbin is set. The bobbin setting unit includes a storage device that stores information for specifying the spinning unit in which a yarn is wound around the yarn supplying bobbin.

  Thereby, since it can be detected that the yarn quality is deteriorated due to the specific spinning unit, the cause of the deterioration of the yarn quality can be determined more accurately.

The front view which shows the whole structure of the automatic winder provided with the winding unit which concerns on one Embodiment of this invention. The front view which showed schematic structure of the winding unit. The expansion perspective view which shows the structure of a unwinding assistance apparatus. The schematic side view which shows a mode that a raising / lowering member follows and follows the chase part of a yarn feeding bobbin. The graph which shows the relationship between the amount of fluff and the unwinding position. The schematic side view which shows the other structure of an unwinding position detection part.

  Next, an automatic winder according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of an automatic winder 10 of the present embodiment.

  As shown in FIG. 1, an automatic winder (yarn winding machine) 10 includes a plurality of winding units 11 arranged side by side, a machine base control device (occurrence tendency calculation unit) 12, a yarn feeding bobbin supplying device 13, A doffing device 14 is provided as a main component.

  The machine base control device 12 is configured to be able to communicate with each winding unit 11. The operator of the automatic winder 10 can manage the plurality of winding units 11 collectively by appropriately operating the machine base control device 12.

  Each winding unit 11 is configured to unwind the yarn from the yarn supplying bobbin 15 and wind the wound yarn 16 around the winding bobbin 22 while traversing the yarn 16. The winding bobbin in which the yarn 16 is wound is called a package 18.

  A yarn supplying bobbin 15 around which yarn is wound by a spinning unit of a spinning machine (not shown) is supplied to the yarn supplying bobbin supplying device 13.

  Between the yarn supplying bobbin supplying device 13 and each winding unit 11, a yarn supplying bobbin conveying path (conveying path) 35 constituted by a belt conveyor or the like is disposed. The yarn supplying bobbin conveying path 35 can convey a conveying tray (conveying body) 39 on which the yarn supplying bobbin 15 is placed to each winding unit 11.

  The yarn supplying bobbin supplying device 13 is configured to place the yarn supplying bobbins 15 one by one on the conveying tray 39 and send them out to the yarn supplying bobbin conveying path 35. With this configuration, the yarn supplying bobbin 15 can be supplied to each winding unit 11.

  The doffing device 14 travels to the position of the winding unit 11 when the package 18 becomes full in each winding unit 11 (a state in which a predetermined amount of yarn is wound), It is configured to remove and set an empty winding bobbin. The operations of the yarn feeding bobbin supply device 13 and the doffing device 14 are controlled by a machine control device 12.

  Next, the configuration of the winding unit 11 will be described with reference to FIG. FIG. 2 is a front view showing a schematic configuration of the winding unit.

  Each winding unit 11 includes a yarn supplying unit 20 and a winding unit 21.

  The yarn supplying unit 20 is configured to hold the yarn supplying bobbin 15 set on the transport tray (bobbin setting unit) 39 at a predetermined position. Thereby, the yarn 16 can be appropriately unwound from the yarn supplying bobbin 15.

  An RF tag (storage device) 38 in which appropriate information can be written is embedded in the transport tray 39. Information stored in the RF tag 38 includes information for specifying the spinning unit that has generated the yarn feeding bobbin 15 (such as a weight number), and doffing execution time. An RF reader 37 is installed for each winding unit 11 below the yarn feeding bobbin conveyance path 35. The RF reader 37 transmits information acquired from the RF tag 38 to the machine control device 12 via the unit control unit 50 (bobbin replacement instruction unit) (or directly).

  The winding unit 21 includes a cradle 23 and a winding drum 17.

  The cradle 23 has a pair of bearing centers, and the winding bobbin 22 (or the package 18) is rotatably supported by sandwiching the winding bobbin 22 between the bearing centers. The cradle 23 is configured such that the outer periphery of the supporting package 18 can be brought into contact with the outer periphery of the winding drum 17.

  The winding drum 17 is for traversing the yarn 16 on the surface of the package 18 and rotating the package 18. The winding drum 17 is rotationally driven by a package drive motor 19. The package 18 can be driven and rotated by rotationally driving the winding drum 17 in a state where the outer periphery of the package 18 is in contact with the winding drum 17. A spiral traverse groove (not shown) is formed on the outer peripheral surface of the winding drum 17. The yarn 16 unwound from the yarn feeding bobbin 15 is wound around the surface of the package 18 while being traversed (traversed) with a certain width by the traverse groove. Thereby, the package 18 having a constant winding width can be formed.

  Each winding unit 11 includes a notification lamp (notification unit) 51 in front of the winding unit 11. The notification lamp 51 can receive signals from the unit control unit 50 and the machine base control device 12. If the machine control device 12 or the unit control unit 50 determines that the winding unit 11 has an abnormality, the machine control device 12 or the unit control unit 50 causes the notification lamp 51 to shine in a color different from the normal time.

  Each winding unit 11 is arranged in the yarn traveling path between the yarn feeding unit 20 and the winding unit 21 in order from the yarn feeding unit 20 side, the unwinding assisting device 24, the tension applying device 25, and the yarn joining device 26. And a yarn quality measuring device 31 are arranged. In the following description, the upstream side and the downstream side in the traveling direction of the yarn 16 may be simply referred to as “upstream side” and “downstream side”.

  The unwinding assisting device 24 includes a movable member (unwinding member) 72 capable of covering the core tube of the yarn feeding bobbin 15. The movable member 72 is configured in a substantially cylindrical shape, and is disposed so as to contact a balloon formed on the yarn layer upper portion of the yarn feeding bobbin 15. The balloon is a portion where the yarn 16 unwound from the yarn feeding bobbin 15 is swung around by centrifugal force. By bringing the movable member 72 into contact with the balloon, tension is applied to the yarn 16 of the balloon portion, and the yarn 16 is prevented from being swung excessively. Thereby, the yarn 16 can be appropriately unwound from the yarn supplying bobbin 15. The details of the unwinding assisting device 24 will be described later.

  The tension applying device 25 applies a predetermined tension to the traveling yarn 16. In the present embodiment, the tension applying device 25 is configured by a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are biased so that the comb teeth are engaged with each other. By passing the yarn 16 while bending the interdigitated comb teeth, an appropriate tension can be applied to the yarn 16 and the quality of the package 18 can be improved. However, the tension applying device 25 is not limited to the gate type, but may be a disk type, for example.

  When the yarn 16 between the yarn supplying bobbin 15 and the package 18 is in a divided state for some reason, the yarn joining device 26 combines the lower yarn on the yarn supplying bobbin 15 and the upper yarn on the package 18 side. It is intended for splicing. In the present embodiment, the yarn joining device 26 is configured as a splicer device that twists yarn ends together by a swirling air flow generated by compressed air. However, the yarn joining device 26 is not limited to the splicer device, and for example, a mechanical knotter or the like can be adopted.

  The yarn quality measuring device 31 is configured to measure the yarn quality of the yarn 16. Specifically, the yarn quality measuring device 31 includes a measuring unit 32 and a processing unit 33. The measuring unit 32 is composed of one or a plurality of non-contact sensors. The processing unit 33 is configured to be able to measure the yarn quality (the amount of fluff or the degree of yarn unevenness) by processing the signal from the measurement unit 32. The processing unit 33 transmits the detection result to the machine control device 12. Further, for example, when the processing unit 33 detects a yarn defect with a fluff amount of a predetermined amount or more, the processing unit 33 sends an instruction to a cutter (not shown) via the unit control unit 50 to cut the yarn 16.

  When the yarn 16 is cut by the cutter, the yarn 16 is caught by the lower yarn catching member 29 and the upper yarn catching member 30, and the yarn joining device 26 performs the yarn joining.

  Specifically, the upper thread catching member 30 is connected to a negative pressure source and is configured to be rotatable about a shaft 41. Thereby, the yarn end of the yarn 16 on the package 18 side can be acquired, and the yarn 16 can be introduced into the yarn joining device 26. Similarly, the lower thread catching member 29 is connected to a negative pressure source and is configured to be rotatable by the shaft 42. As a result, the yarn (lower yarn) on the yarn feeding bobbin 15 side is captured and guided to the yarn joining device 26.

  By driving the yarn joining device 26 in this state, the upper yarn and the lower yarn are joined, and the yarn 16 is made continuous between the yarn supplying bobbin 15 and the package 18. Thereby, winding of the thread | yarn 16 to the package 18 can be restarted.

  Thus, the package 18 can be formed by winding the yarn 16 around the winding bobbin 22.

  Next, details of the unwinding assisting device 24 will be described. FIG. 3 is an enlarged perspective view showing the configuration of the unwinding assisting device 24. FIG. 4 is a schematic side view showing how the elevating member 73 descends following the chase portion 15a of the yarn feeding bobbin 15.

  As shown in FIG. 3, the unwinding assisting device 24 includes a fixed member 71, a movable member 72, an elevating member 73, and a chase part detection sensor 74.

  The fixing member 71 is fixed to the unit frame 5 via an appropriate member. A throttle part (not shown) for controlling the balloon is formed below the fixing member 71. The movable member 72 is formed in a cylindrical shape and is disposed so as to cover the outside of the fixed member 71. The elevating member 73 is formed integrally with the movable member 72.

  As shown in FIG. 2, the automatic winder 10 includes a stepping motor 79, a stepping motor control unit 83, and a driving force conversion mechanism 85 as a configuration for moving the elevating member 73.

  The stepping motor 79 is electrically connected to the stepping motor control unit 83. The stepping motor control unit 83 controls the stepping motor 79 by transmitting a pulse signal. The stepping motor control unit 83 is connected to the unit control unit 50. Further, the stepping motor control unit 83 includes a counting unit 84. The count unit 84 counts the number of pulses transmitted by the stepping motor control unit 83.

  The drive force conversion mechanism 85 is for converting the rotational force of the stepping motor 79 into a linear force, and includes a mounting member 75 and a screw shaft 77. The screw shaft 77 is arranged in the vertical direction (axial direction of the yarn feeding bobbin 15) and is rotatably supported.

  The attachment member 75 is connected to the elevating member 73. A screw hole is cut in the attachment member 75, and the attachment member 75 is attached to the screw shaft 77 by screwing the screw shaft 77 into the screw hole. A motor shaft of a stepping motor 79 is connected to one end of the screw shaft 77. Further, the attachment member 75 is restricted from moving in the rotational direction by appropriate means so as not to rotate integrally with the screw shaft 77.

  With this configuration, when the stepping motor 79 is driven and the screw shaft 77 rotates, the attachment member 75 and the elevating member 73 move upward or downward along the axial direction of the screw shaft 77.

  Thus, the elevating member 73 is configured to be movable in the vertical direction (the axial direction of the yarn feeding bobbin 15). Since the movable member 72 is formed integrally with the elevating member 73, the movable member 72 and the elevating member 73 move integrally. As shown in FIG. 3, the elevating member 73 includes a chase portion detection sensor 74 for detecting the chase portion 15 a of the yarn feeding bobbin 15. The chase portion 15a is a yarn layer end portion of the yarn feeding bobbin 15 as the winding operation proceeds. The chase portion detection sensor 74 is configured as a transmissive photosensor having a light projecting portion 74a and a light receiving portion 74b. A detection signal detected by the chase detection sensor 74 is input to the unit controller 50.

  The stepping motor control unit 83 can position the movable member 72 at a predetermined distance from the chase portion 15a by operating the elevating member 73 based on the detection signal of the chase portion detection sensor 74 (FIG. 4A). See). Even when the yarn feeding bobbin 15 is unwound and the position of the chase portion 15a is lowered, the stepping motor control unit 83 lowers the lifting member 73 based on the detection signal of the chase portion detection sensor 74. The distance between the chase portion 15a and the movable member 72 can always be constant (see FIGS. 4B and 4C).

  Thereby, when the yarn feeding bobbin 15 is unwound, the balloon generated at the position where the yarn 16 is dissociated from the chase portion 15a can be appropriately regulated, and the tension of the yarn 16 unwound from the yarn feeding bobbin 15 can be regulated. The winding work can be performed while keeping the constant.

  Further, a chase portion detection sensor 74 is attached to the elevating member 73, and the chase portion 15a can be detected by the chase portion detection sensor 74. The origin of the stepping motor 79 is set by an unillustrated origin sensor or the like. The count unit 84 counts the number of pulses transmitted by the stepping motor control unit 83 to move the elevating member 73 from the origin position until the chase unit detection sensor 74 detects the chase unit 15a. That is, the stepping motor control unit 83 can grasp the movement amount of the elevating member 73 based on the number of pulses counted by the counting unit 84. The stepping motor control unit 83 can detect the position (unwinding position) where the yarn feeding bobbin 15 is unwound based on the amount of movement of the elevating member 73 from the origin sensor. Thus, in this embodiment, since the unwinding position is detected by the chase part detection sensor 74, the stepping motor control part 83, and the count part 84, the unwinding position detection part 80 is comprised by these members.

  The stepping motor control unit 83 transmits the detected unwinding position of the yarn feeding bobbin 15 to the yarn quality inspection unit 52. The yarn quality inspection unit 52 manages the yarn quality. For example, the yarn quality inspection unit 52 inspects whether the amount of fluff is large based on the unwinding position and the detection result received from the processing unit 33.

  Hereinafter, a method for inspecting the amount of fluff will be described with reference to FIG. FIG. 5 is a graph showing the relationship between the amount of fluff and the unwinding position.

  As shown in FIG. 5, it is known that the amount of fluff tends to increase as the remaining yarn amount of the yarn feeding bobbin 15 decreases and the unwinding position decreases (as the unwinding yarn length increases). (See FIG. 5). Therefore, when the amount of fluff is inspected, the threshold value is not made constant, but when the remaining yarn amount is large (when the unwinding yarn length is short), the threshold value is set low, and the remaining yarn amount is small and the lifting member When 73 descends (when the unwinding length is long), it is preferable to set the threshold value higher.

  However, as described above, the yarn feeding bobbin 15 with an insufficient remaining yarn amount may be supplied. For example, when the yarn supply bobbin 15 with the unwinding length B shown in FIG. 5 is newly supplied, the conventional automatic winder performs the same control as when the yarn supply bobbin 15 with the unwinding length A is supplied. I do. That is, the determination is performed using the threshold value when the unwinding yarn length is A. As a result, it may be determined that the amount of fluff is large even though the amount of fluff is in the normal range.

  In this regard, in this embodiment, when the yarn feeding bobbin 15 having the unwinding length B is newly supplied, the unwinding assisting device 24 moves the lifting member until the chase portion detection sensor 74 detects the chase portion 15a. 73 is lowered. Then, the stepping motor control unit 83 detects the unwinding position of the yarn feeding bobbin 15 based on the number of pulses transmitted until the chase unit 15a is detected (the number of pulses counted by the counting unit 84). That is, in the configuration of this embodiment, the unwinding position can be accurately detected even when the unwinding bobbin 15 having the unwinding length B is newly supplied.

  Accordingly, the yarn quality inspection unit 52 can determine the fluff amount using the threshold value corresponding to when the unwinding yarn length is B immediately after the yarn feeding bobbin 15 is supplied. Therefore, it is possible to accurately inspect whether or not the amount of fluff is large.

  When the detected fluff amount exceeds the threshold value, the yarn quality inspection unit 52 notifies the unit control unit 50 and the machine base control device 12 to that effect.

  The unit controller 50 changes the lighting color of the notification lamp 51 to notify that an abnormality has occurred. Note that the notification means is arbitrary, the abnormality may be notified by an alarm sound, and the weight number and the like of the corresponding winding unit 11 may be displayed on the display unit of the machine control device 12. As a result, the cause of the abnormality is identified and dealt with by the operator. Further, when notified of an abnormality in the fluff amount from the yarn quality inspection unit 52, the unit control unit 50 instructs to discharge the yarn feeding bobbin 15 instead of or in addition to the notification of the abnormality.

  When the machine control device 12 is notified of the fluff amount abnormality from the yarn quality inspection unit 52, the machine control device 12 identifies the corresponding winding unit 11. Then, the machine control device 12 specifies the spinning unit that has generated the yarn feeding bobbin 15 based on the value of the RF tag 38 of the transport tray 39 on which the winding unit 11 is winding (having performed). Remember.

  The machine control device 12 refers to the stored content, and determines that the spinning unit is abnormal when the yarn feeding bobbin 15 generated by the specific spinning unit frequently has an abnormality in the fluff amount. Then, this is notified to the operator by an appropriate method.

  Further, the yarn quality inspection unit 52 may be configured to transmit the detected fluff amount to the machine control device 12. In this configuration, the machine base control device 12 calculates the overall occurrence tendency of the fluff amount based on the fluff amount received from the plurality of yarn quality inspection units 52. The threshold value may be determined based on this occurrence tendency. In this configuration, since the amount of fluff can be compared between the winding units 11, whether the amount of fluff is increased due to the winding unit 11, or the amount of fluff is due to a common cause (such as humidity) in the entire automatic winder 10. It is possible to identify whether it is increasing.

  As described above, the automatic winder 10 according to the present embodiment includes the transport tray 39, the chase portion detection sensor 74, the yarn quality measuring device 31, and the yarn quality inspection unit 52. The yarn feeding bobbin 15 is set on the transport tray 39. The chase portion detection sensor 74 detects the unwinding position of the yarn feeding bobbin 15 set on the transport tray 39. The yarn quality measuring device 31 measures the yarn quality of the yarn 16 unwound from the yarn supplying bobbin 15. The yarn quality inspection unit 52 manages the yarn quality based on the unwinding position detected by the chase portion detection sensor 74 and the yarn quality measured by the yarn quality measuring device 31.

  Thereby, even when the yarn supplying bobbin 15 having an insufficient remaining yarn amount is supplied, the unwinding position of the yarn supplying bobbin 15 at the time of measuring the yarn quality can be specified. Therefore, it is possible to appropriately inspect the yarn quality in consideration of the unwinding position.

  Further, the automatic winder 10 according to the present embodiment moves the movable member 72 following the change in the position of the chase portion 15a that is the yarn layer end portion of the yarn feeding bobbin 15, thereby unwinding the yarn of the yarn feeding bobbin 15. An unwinding assisting device 24 that assists the scissors is provided. The chase portion detection sensor 74 not only detects the unwinding position, but also functions as a sensor that moves with the movable member 72 during the unwinding operation to detect the chase portion 15a.

  Thereby, since the chase part detection sensor 74 serves as both the unwinding position detection part and the unwinding assist function, the number of sensors can be reduced. Further, the unwinding position can be detected without adding a new device from the existing configuration.

  Further, the automatic winder 10 of the present embodiment includes a machine control device 12 that obtains a tendency of occurrence of yarn quality based on the inspection results of the plurality of yarn quality inspection units 52.

  Thereby, it is possible to distinguish whether the yarn quality is deteriorated only in some winding units 11 or whether the yarn quality is deteriorated in all winding units 11. Therefore, the cause of the deterioration of the yarn quality can be easily identified.

  Next, a modification of the above embodiment will be described. FIG. 6 is a schematic side view showing another configuration of the unwinding position detection unit. In this modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

  The unwinding position detection unit 80 of the above embodiment is configured to detect the unwinding position of the yarn feeding bobbin 15 by the chase unit detection sensor 74, the stepping motor control unit 83, and the counting unit 84. On the other hand, the unwinding position detection unit 80 of the present modification detects the unwinding position of the yarn feeding bobbin 15 by using a plurality of remaining yarn amount sensors 91, 92, 93 which are optical sensors.

  As shown in FIG. 6, the remaining yarn amount sensors 91, 92, 93 are arranged side by side in the vertical direction (the axial direction of the yarn feeding bobbin 15, the unwinding direction). Further, the remaining yarn amount sensors 91, 92, 93 are arranged so as to detect the yarn layer portion instead of the core tube portion of the yarn supplying bobbin 15. Accordingly, the unwinding position of the yarn feeding bobbin 15 can be detected based on the detection signals of the remaining yarn amount sensors 91, 92, 93.

  For example, in the state shown in FIG. 6A, the remaining yarn amount sensors 91, 92, 93 all detect the yarn layer. Thereby, it can be seen that the unwinding position of the yarn feeding bobbin 15 is relatively high. In the state shown in FIG. 6B, the remaining yarn amount sensors 92 and 93 detect the yarn layer. Thereby, it can be seen that the unwinding position of the yarn feeding bobbin 15 is lowered. In the state shown in FIG. 6C, only the remaining yarn amount sensor 93 detects the yarn layer. Thereby, it can be seen that the unwinding position of the yarn feeding bobbin 15 is further lowered.

  In this modification, for example, when all three of the remaining yarn amount sensors 91, 92, 93 detect a single layer, only two detect a yarn layer, and only one detects a yarn. When the layer is detected, the above threshold can be changed. Thereby, even if the yarn supplying bobbin 15 with a small remaining yarn amount is newly supplied, the amount of fluff based on the unwinding position can be determined.

  In this modification, the yarn layer of the yarn feeding bobbin 15 is detected, but the movable member 72 of the unwinding assisting device 24 or a member that moves integrally with the movable member 72 (elevating member 73 and attachment member) is detected by an equivalent sensor. 75) or the like.

  Alternatively, a configuration may be adopted in which only the remaining yarn amount sensor 92 is provided and the amount of fluff is measured based on when the remaining yarn amount sensor 92 no longer detects the yarn layer. Thereby, since the fluff amount can be measured between the yarn feeding bobbins 15 having the same unwinding position, it can be accurately determined whether or not the fluff amount is abnormal.

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

  The configuration for detecting the unwinding position of the yarn feeding bobbin 15 is not limited to the optical sensor as described above. For example, the unwinding position may be detected by photographing the yarn feeding bobbin 15 with a camera or the like and performing image processing.

  In the above embodiment, the processing devices such as the processing unit 33, the yarn quality inspection unit 52, the unit control unit 50, and the machine base control device 12 have been described. However, which processing device performs which processing has been described in the above embodiment. It is not limited to examples. For example, the fluff amount determination may be performed by the machine control device 12 instead of the yarn quality inspection unit 52. The yarn quality inspection unit 52 is not limited to the configuration provided in the unit control unit 50, and may be provided independently.

  In the above embodiment, the unwinding assisting device 24 is moved by the stepping motor 79, the driving force converting mechanism 85, and the like. However, the unwinding assisting device 24 can also be moved using an air cylinder. Even in this case, the yarn layer of the yarn feeding bobbin 15 is detected by a plurality of optical sensors similar to the above, or the movable member 72 or a member that moves integrally with the movable member 72 (configures an air cylinder). The position of unraveling can be detected by detecting (including members).

  In the above-described embodiment, the winding unit 21 is configured to traverse the yarn 16 by the winding drum 17, but may be configured to traverse the yarn 16 using, for example, an arm-type traverse mechanism.

  The configuration for supplying the yarn supplying bobbin 15 to the automatic winder 10 is not limited to the tray type, and a magazine type bobbin supplying device may be provided for each winding unit 11.

  The present invention is not limited to the automatic winder 10 as long as the yarn quality of the yarn wound around the yarn supplying bobbin is measured, and can be applied to other yarn winding machines.

10 Automatic winder (yarn winding machine)
11 Winding unit 12 Machine control device (occurrence tendency calculation unit)
15 Yarn feeding bobbin 24 Unwinding assist device 31 Yarn quality measuring device (yarn quality detection unit)
39 Transport tray (bobbin set section)
50 Unit control unit (bobbin replacement instruction unit)
52 Yarn Quality Inspection Department 72 Movable Member (Unwinding Member)
73 Lifting member 74 Chase part detection sensor 79 Stepping motor 80 Unwinding position detection part 83 Stepping motor control part 84 Count part 91, 92, 93 Remaining yarn amount sensor

Claims (9)

A bobbin setting section in which a yarn feeding bobbin is set;
An unwinding position detecting unit for detecting an unwinding position of a yarn feeding bobbin set in the bobbin setting unit;
A yarn quality measuring unit for measuring the yarn quality of the yarn unwound from the yarn feeding bobbin;
A yarn quality inspection unit that manages yarn quality based on the unwinding position detected by the unwinding position detection unit and the yarn quality measured by the yarn quality measurement unit;
A yarn winding machine comprising: The yarn winding machine according to claim 1,
The unwinding position detection unit includes a chase portion detection sensor that moves following the change in the position of the chase portion that is a yarn layer end portion of the yarn feeding bobbin during the unwinding operation and detects the chase portion. Characteristic yarn winding machine. The yarn winding machine according to claim 1 or 2,
A yarn winding machine comprising: an informing unit for informing a yarn quality abnormality based on an inspection result of the yarn quality inspection unit. A yarn winding machine according to any one of claims 1 to 3,
A yarn winding machine comprising a bobbin replacement instructing unit for instructing replacement of the yarn supplying bobbin based on an inspection result of the yarn quality inspection unit. A yarn winding machine according to any one of claims 1 to 4,
Based on the inspection results of the plurality of yarn quality inspection units, comprising an occurrence tendency calculation unit for determining the occurrence tendency of yarn quality,
The yarn winding machine characterized in that the yarn quality inspection section inspects the quality of the yarn based on the occurrence tendency. A yarn winding machine according to any one of claims 2 to 5,
A unwinding assisting device for assisting unwinding of the yarn of the yarn supplying bobbin by moving the unwinding member following the change in the position of the chase portion;
The unwinding assisting device has a stepping motor that moves the unwinding member, and a stepping motor control unit that controls driving of the stepping motor,
The stepping motor control unit has a counting unit that counts the number of pulses transmitted to drive the stepping motor,
The unwinding position detecting unit further includes the stepping motor control unit and the counting unit. The yarn winding machine according to claim 1,
A yarn winding machine, wherein a plurality of unwinding position detection units are provided in the unwinding direction, and comprise a remaining yarn amount sensor for detecting the unwinding position of the yarn feeding bobbin. The yarn winding machine according to claim 7,
A unwinding assisting device for assisting unwinding of the yarn of the yarn feeding bobbin by moving the unwinding member following the change in the position of the chase portion which is the yarn layer end of the yarn feeding bobbin;
The yarn winding machine, wherein the remaining yarn amount sensor detects the unwinding position of the yarn feeding bobbin by detecting the position of the unwinding member or a member that moves integrally with the unwinding member. . A yarn winding machine according to any one of claims 1 to 8,
The yarn feeding bobbin is wound with a yarn by a spinning machine including a plurality of spinning units,
The bobbin setting unit is movable along a conveyance path in a state where the yarn feeding bobbin is set,
The bobbin setting unit includes a storage device that stores information for specifying the spinning unit in which a yarn is wound around the yarn supplying bobbin.

Images