JP2013249189A - Device of winding thread, method of winding thread, and system of winding thread - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity by setting a suitable winding speed for each of the positions for unfolding a thread on a thread feeding bobbin.SOLUTION: A winding unit 2 of an automatic winder includes a thread feeding member 11 holding a thread feeding bobbin 8, and a winding member 13 winding a thread Y unfolded from the thread feeding bobbin 8 to form a package P. A winding area of the thread feeding bobbin 8 whereon a thread Y is wound is divided into seven individual set areas, and a speed of winding a package is set for each of the seven individual set areas.

Description

  The present invention relates to a yarn winding device that winds a yarn to form a package, a yarn winding method, and a yarn winding system.

  Patent Document 1 discloses an automatic winder including a plurality of winding units. One winding unit forms a package by winding a yarn unwound from a yarn supplying bobbin onto a winding tube supported by a cradle while traversing the yarn by a winding drum having a traverse groove.

  By the way, as the remaining amount of yarn on the yarn supplying bobbin decreases, the unwound yarn and the yarn supplying bobbin easily rub against each other and the unwinding resistance increases, so that the yarn tension increases, resulting in yarn breakage and sluffing. There is a problem in that unraveling abnormalities such as (circle missing) are likely to occur. Therefore, in the automatic winder disclosed in Patent Document 1, when the remaining amount of the yarn becomes a predetermined amount or less, the tension applied to the yarn by the tensor is lowered. Further, when the remaining amount of yarn is lowered and cannot be dealt with only by the tension reduction by the tensor, the rotational speed of the traverse drum is lowered to reduce the winding speed. In Patent Document 1, the set value of the winding speed is constant in a state where the remaining amount of yarn on the yarn supplying bobbin is large (until the predetermined amount or less).

Japanese Patent No. 3564817 (FIG. 3)

  By the way, the yarn behavior (hereinafter referred to as yarn unwinding characteristics) is often different depending on the yarn feeding bobbin even when unwinding under the same conditions of unwinding speed and the like. For example, when there is a part where the yarn is softly wound on the yarn feeding bobbin, if the yarn is unwound at high speed with an automatic winder, the thread will be pulled out as a ring-shaped lump in the soft winding part. Is likely to occur. In addition, when a large number of yarn feeding bobbins are manufactured at the same time by a spinning device, when the winding method is common among a plurality of yarn feeding bobbins, the yarn is unwound from the plurality of yarn feeding bobbins. Is likely to cause abnormalities such as sluffing at substantially the same yarn unwinding position. Thus, unwinding abnormality may easily occur at the same yarn unwinding position between yarn feeding bobbins that meet certain specific conditions.

  In this regard, in the conventional automatic winder as described in Patent Document 1, the winding speed in a state where the remaining amount of yarn on the yarn supplying bobbin is large is constant. Therefore, when using a yarn feeding bobbin that may cause sluffing or the like at a specific yarn unwinding position, sufficiently lower the winding speed so that no abnormality occurs at that specific yarn unwinding position, The entire yarn feeding bobbin is unwound. That is, when the yarn is unwound at a position other than the specific yarn unwinding position, normally, no abnormality occurs even if the yarn is wound at a higher winding speed. The yarn is to be unwound at a low speed corresponding to the specific yarn unwinding position, resulting in low productivity.

  An object of the present invention is to improve productivity by setting an appropriate winding speed according to the yarn unwinding characteristic of the yarn feeding bobbin.

Means for Solving the Problems and Effects of the Invention

A yarn winding device according to a first aspect of the present invention includes a yarn supplying portion that holds a yarn supplying bobbin, a winding portion that winds a yarn unwound from the yarn supplying bobbin in one of its axial directions, and the winding portion. A speed setting unit capable of setting the winding speed, a winding control unit for controlling the winding unit based on the winding speed set by the speed setting unit, and the yarn unwinding of the yarn feeding bobbin. An unwinding position detection unit for detecting the wrinkle position,
The speed setting unit divides a winding range around the yarn in the yarn supplying bobbin into a plurality of individual setting ranges, and sets the winding speed of the winding unit for each of the plurality of individual setting ranges. Set,
The winding control unit determines whether the yarn unwinding position is in accordance with which range of the plurality of individual setting ranges the yarn unwinding position detected by the unwinding position detecting unit is. The winding unit is controlled so that the yarn is wound at the winding speed set with respect to the position within the range.

  The yarn is unwound from the yarn supplying bobbin in one of the axial directions, and this yarn is wound up by the winding unit. Here, in the present invention, the winding range around which the yarn of the yarn supplying bobbin is wound is divided into a plurality of individual setting ranges, and the winding speed of the winding unit is set for each of the plurality of individual setting ranges. Therefore, for example, unwinding abnormality such as sluffing does not occur in a portion where the yarn is wound with a specified strength and unwinds at a high winding speed, and a portion where the yarn is wound loosely than the specified strength. Thus, the winding speed can be set according to the yarn unwinding characteristics, such as unwinding at a low winding speed. In other words, when unwinding abnormality is likely to occur at a specific yarn unwinding position within the winding range of the yarn feeding bobbin, when unwinding at that specific yarn unwinding position, the winding speed is reduced, In the position, the winding speed can be set fast. As a result, the yarn can be wound as fast as possible within the range where no unwinding abnormality occurs, and the productivity is improved.

The yarn winding device according to a second aspect of the present invention is the yarn winding sensor according to the first aspect, wherein the yarn detection sensor detects an end of the yarn layer wound around the yarn feeding bobbin on the yarn unwinding side, and the yarn unwinding progress. The unwinding assisting device having a cylinder that assists the unwinding of the yarn while moving in the axial direction of the yarn supplying bobbin, and the cylinder according to the detection of the yarn by the yarn detection sensor, A stepping motor that moves the yarn feeding bobbin along the axial direction of the yarn feeding bobbin, and a counting unit that counts the number of pulses transmitted to the stepping motor to drive the stepping motor. Prepared,
The unwinding position detecting unit detects the current unwinding position from the number of pulses counted by the counting unit when the cylindrical body is moved.

  As the yarn is unwound from the yarn supplying bobbin, the position of the end of the yarn layer on the yarn unwinding side is lowered. Therefore, as the yarn unwinds from the yarn supplying bobbin, the tube of the unwinding assisting device is moved in the axial direction of the yarn supplying bobbin so that the yarn Y during unwinding (balloon) To stabilize the unwinding tension. More specifically, in response to the yarn detection by the yarn detection sensor, the stepping motor moves the cylindrical body to the side opposite to the yarn unwinding side along the axial direction of the yarn feeding bobbin. At this time, where the current yarn unwinding position is, that is, where the end of the yarn unwinding side of the yarn layer is in the axial direction of the yarn supplying bobbin can be detected from the amount of movement of the cylinder. The amount of movement of the cylinder can be grasped by counting the number of pulses transmitted to the stepping motor when the cylinder is moved. Therefore, the yarn unwinding position of the yarn feeding bobbin can be detected.

  In the yarn winding device according to a third aspect of the present invention, in the first or second aspect, the speed setting unit is an input for inputting the set value of the winding speed for each of the plurality of individual setting ranges. It has the part.

  According to the present invention, the winding speed can be set for each of the plurality of individual setting ranges of the yarn feeding bobbin when the operator inputs from the input unit.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, information relating to the frequency of unwinding abnormality that occurs when the yarn is unwound in each of the plurality of individual setting ranges is stored. An abnormality information storage unit, and the speed setting unit refers to the information regarding the frequency of the unraveling abnormality stored in the abnormality information storage unit for each of the plurality of individual setting ranges, and determines the winding speed. It is characterized by setting.

  According to the present invention, for each of the plurality of individual setting ranges, the winding speed for each of the plurality of individual setting ranges is set from the information regarding the frequency of unwinding abnormality at the time of winding the yarn in the past. Therefore, the winding speed can be set appropriately in accordance with the tendency of occurrence of the unwinding abnormality such as at which yarn unwinding position the unwinding abnormality is likely to occur.

  The yarn winding device according to a fifth aspect of the present invention is the yarn winding apparatus according to any one of the first to fourth aspects, further comprising a package forming unit that forms a package by winding the yarn unwound from the yarn supplying bobbin onto a winding tube. The winding unit is a yarn storage device that is disposed between the yarn supplying unit and the package forming unit, winds the yarn unwound from the yarn supplying bobbin, and temporarily stores the yarn. The package forming unit is characterized by winding the yarn unwound from the yarn accumulating device onto the winding tube.

  The yarn storage device is arranged between the yarn supplying unit and the package forming unit and temporarily stores the yarn unwound from the yarn supplying bobbin.When the yarn supplying bobbin is replaced or when a yarn breakage occurs, Even in a situation where the yarn is not supplied from the yarn supplying bobbin, the yarn stored in the yarn storage device can be supplied to the package forming unit. Thereby, the interruption of the winding operation of the package forming unit is suppressed as much as possible, and the productivity of the package is improved. In the present invention, in the yarn winding device including the above-described yarn storage device, the winding speed of the yarn storage device is controlled according to the yarn unwinding position of the yarn feeding bobbin. That is, the winding speed of the package forming unit is controlled by controlling the winding speed of the yarn from the yarn feeding bobbin by controlling the winding speed of the yarn storage device located between the yarn supplying unit and the package forming unit. Compared with the case where the control is performed, the deterioration of the package quality is suppressed.

  A yarn winding method according to a sixth aspect of the present invention is a yarn winding method for winding a yarn unwound from a yarn supplying bobbin, wherein the winding range in which the yarn is wound in the yarn supplying bobbin is divided into a plurality of individually set ranges. For each of the plurality of individual setting ranges, setting a winding speed according to the yarn unwinding characteristic, and winding the yarn unwound from the yarn feeding bobbin at the set winding speed It is characterized by.

  In the present invention, the winding speed is set for each of a plurality of individual setting ranges of the winding range of the yarn feeding bobbin according to the yarn unwinding characteristics of the individual ranges. As a result, the yarn can be wound as fast as possible within the range where no unwinding abnormality occurs, and the productivity is improved.

  According to a seventh aspect of the present invention, there is provided a yarn winding device that holds a yarn supplying bobbin, a winding unit that winds the yarn unwound in one of the axial directions from the yarn supplying bobbin, and the winding unit. A winding control unit that controls the unwinding position, a unwinding position detection unit that detects the yarn unwinding position of the yarn feeding bobbin, and the yarn unwinding position when a yarn unwinding abnormality occurs An abnormality information storage unit that stores information relating to, and the winding control unit, based on the abnormality information stored in the abnormality information storage unit, is a defect of a spinning device that has spun a yarn feeding bobbin in which an unwinding abnormality occurs It is characterized by specifying.

  In the present invention, since the spinning device that spun the yarn feeding bobbin in which the unwinding abnormality occurs in the yarn winding device can be specified, it is possible to quickly take countermeasures against the problem.

  The yarn winding device according to an eighth aspect of the present invention includes a notifying unit for notifying a specific result when the winding control unit specifies a malfunction of a spinning device that has spun a yarn feeding bobbin in which an unwinding abnormality occurs. It is characterized by.

  In the present invention, since the notification unit notifies the result of the malfunction of the spinning device, the operator can immediately know the malfunction of the spinning device.

According to a ninth aspect of the present invention, there is provided a yarn winding system according to the seventh or eighth aspect, a spinning device including a plurality of spinning units for spinning the yarn feeding bobbin, the yarn winding device, and the spinning device. A tray conveying device for conveying the yarn feeding bobbin between,
The tray transport device includes a transport tray that mounts and transports the yarn feeding bobbin, and a storage unit provided in the transport tray, and the storage unit is mounted on the transport tray. Information relating to the spinning unit that spun the yarn feeding bobbin is stored, and the winding control unit generates the unwinding abnormality from the information stored in the storage unit and the abnormality information stored in the abnormality information storage unit. A spinning unit that spins a yarn feeding bobbin and a spinning process in which a spinning abnormality has occurred in the spinning unit are specified.

  In the present invention, it is possible to specify the spinning unit that spun the yarn feeding bobbin in which the unwinding abnormality occurs and the spinning process in which the unwinding abnormality has occurred in the spinning unit. It is possible to know and maintainability is improved.

It is a perspective view of the automatic winder concerning this embodiment. It is a front view of one winding unit of an automatic winder. It is a block diagram which shows roughly the electrical structure of an automatic winder. It is a front view of a yarn feeding bobbin. It is a graph which shows an example of the winding speed control of the storage device according to the yarn unwinding position. It is explanatory drawing about determination of the weighting coefficient of seven separate setting ranges in a change form. It is a front view of one winding unit of the automatic winder of another modification.

  Next, an embodiment of the present invention will be described. This embodiment is an example in which the present invention is applied to an automatic winder having a plurality of winding units that winds a yarn unwound from a yarn supplying bobbin around a winding tube to form a package. FIG. 1 is a front view of an automatic winder according to the present embodiment, and FIG. 2 is a front view of one winding unit of the automatic winder.

  As shown in FIG. 1, the automatic winder 1 (yarn winding device) includes a plurality of winding units 2 arranged in the left-right direction in FIG. 1, and the arrangement direction of these winding units 2 along the plurality of winding units 2. A doffing device 3 provided so as to be able to travel freely, and a machine control device 4 for controlling the entire automatic winder 1. The machine base control device 4 is disposed on one end side of the winding units 2 in the row direction.

  The automatic winder 1 sends commands to the plurality of winding units 2 from the machine control device 4 and winds the yarn Y unwound from the yarn feeding bobbin 8 in each winding unit 2. 17 (see FIG. 2) is configured to form a package P. When a full package P is formed in a certain winding unit 2, the doffing device 3 moves over the winding unit 2 and replaces the full package P with an empty winding tube 17. It has become. In addition, the machine base control device 4 controls the operation of each winding unit 2 and monitors the operation state, stores and sets operation parameters, and the like. Further, the machine base control device 4 includes a display operation unit 50. The display operation unit includes a display unit that indicates an operation state of each winding unit 2 or the doffing device 3, and buttons and switches for setting operation parameters of each winding unit 2.

  Next, the detailed configuration of each winding unit 2 will be described. The winding unit 2 shown in FIG. 2 forms a package P having a predetermined shape by winding the spun yarn Y unwound from the yarn feeding bobbin 8 around the winding tube 17 while traversing.

  The winding unit 2 performs various processes on the unit machine base 10, the yarn supplying unit 11 that unwinds and supplies the yarn Y of the yarn supplying bobbin 8, and the yarn Y supplied from the yarn supplying unit 11. A yarn processing execution unit 12 and a winding unit 13 that winds the yarn Y processed by the yarn processing execution unit 12 around a winding tube 17 to form a package P are provided. The unit base 10 includes an operation panel 25 having a display unit, operation buttons, and the like, and a unit control unit 26 (see FIG. 3). The yarn feeding unit 11, the yarn processing execution unit 12, and the winding unit 13 are arranged in this order from bottom to top.

  The yarn supplying section 11 includes a peg 15 that holds the yarn supplying bobbin 8 in an exchangeable manner, and a unwinding assisting device 16 that assists in unwinding the yarn Y from the yarn supplying bobbin 8. The peg 15 is in the vertical state shown in FIG. 2 when the yarn Y is unwound (at the time of winding the yarn). On the other hand, the peg 15 is driven by the peg driving unit 28 (see FIG. 3) and tilts back and forth (perpendicular to the plane of FIG. 2), thereby discharging the empty yarn feeding bobbin 8 and the magazine ( A new yarn supplying bobbin 8 is received from the (not shown).

  The unwinding assisting device 16 regulates the bulging (balloon) of the yarn Y being unwound by lowering the cylindrical body 30 that covers the yarn supplying bobbin 8 from above as the unwinding of the yarn Y proceeds. Stabilize the unwinding tension. More specifically, the unwinding assisting device 16 includes a cylindrical body 30, a holding member 35 that holds the cylindrical body 30, and an optical sensor 36 that is attached to the holding member 35. The holding member 35 is moved up and down by a cylinder drive motor 37 formed of a stepping motor, and thereby the cylinder 30 and the optical sensor 36 also move up and down together with the holding member 35. The optical sensor 36 has a light emitting element 36a and a light receiving element 36b arranged on both sides of the yarn supplying bobbin 8, and this optical sensor 36 is a chess portion 8a of the yarn supplying bobbin 8 (the yarn layer of the yarn supplying bobbin 8). Of these, the taper end on the yarn unwinding side (see FIG. 4) is detected.

  When the position of the chess portion 8a (yarn unwinding position) is lowered as the unwinding of the yarn Y progresses, the chess portion 8a is not detected by the optical sensor 36. Then, the unit controller 26 sends a signal for driving the cylinder drive motor 37 to the motor driver 38 to lower the cylinder 30. Upon receiving the signal, the motor driver 38 sends a pulse signal to the cylinder drive motor 37, and moves the holding member 35 to the side opposite to the yarn unwinding side (downward) until the optical sensor 36 detects the chess portion 8a. Let At this time, the count unit included in the motor driver 38 counts the number of pulse signals transmitted to the cylinder drive motor 37 in order to lower the cylinder 30. Thereby, the cylinder 30 descends following the change in the yarn unwinding position, and the positional relationship between the cylinder 30 and the chess portion 8a is kept constant. When the yarn Y of the yarn supplying bobbin 8 becomes considerably small, the balloon of the yarn Y that has been unwound becomes smaller and it is not necessary to regulate it by the cylindrical body 30, so that the cylindrical body 30 reaches a predetermined lower limit position. It is configured not to descend further.

  The winding unit 13 includes a cradle (not shown) that rotatably holds the winding tube 17 and a traverse drum 18 that is rotationally driven by a drum driving unit 27 (see FIG. 3). A spiral traverse groove 18a is formed on the circumferential surface of the traverse drum 18, and the yarn Y is traversed by the traverse groove 18a. The traverse drum 18 is rotationally driven in contact with the package P formed on the winding tube 17 while traversing the yarn Y by the traverse groove 18a, whereby contact friction with the traverse drum 18 is achieved. As a result, the package P is rotated, and the yarn Y unwound from the yarn supplying bobbin 8 is wound around the winding tube 17.

  The yarn processing execution unit 12 includes a yarn feeler 19, a tension applying device 20, a yarn joining device 21, and a yarn clearer 22.

  The yarn feeler 19 detects the presence or absence of the yarn Y between the unwinding assisting device 16 and the tension applying device 20. The tension applying device 20 applies a predetermined tension to the traveling yarn Y. In FIG. 2, as an example, a gate type having fixed comb teeth 20 a and movable comb teeth 20 b driven by a tension applying device driving unit 30 (see FIG. 3) is shown.

  The yarn joining device 21 is arranged on the yarn feeding bobbin 8 side when the yarn defect is detected by the yarn clearer 22 described later, when the yarn is cut by the cutter 22a, when the yarn is broken during winding, or when the yarn feeding bobbin 8 is replaced. The lower thread Y1 and the upper thread Y2 on the package P side are spliced together. An example of the yarn splicing device 21 is an air splicer that generates an air flow and entangles the fibers of the lower yarn Y1 and the upper yarn Y2 to perform yarn splicing.

  On the lower side and the upper side of the yarn joining device 21, a lower yarn catching guide member 23 that catches the lower yarn Y1 on the yarn feeding bobbin 8 side and guides it to the yarn joining device 21, and an upper yarn Y2 on the package P side is caught. The upper yarn catching guide member 24 for guiding the yarn to the yarn joining device 21 is provided. One end of each of the lower thread catching guide member 23 and the upper thread catching guide member 24 is rotatably attached to the unit machine base 10. Further, the lower thread catching guide member 23 and the upper thread catching guide member 24 can be turned up and down by being driven by a lower thread guide member driving part 31 and an upper thread guiding member driving part 32 (both see FIG. 3). It is.

  The suction port 23a of the lower thread catching guide member 23 sucks and catches the yarn end of the lower thread Y1, and turns from below to above to guide the lower thread Y1 to the yarn joining device 21. At the same time, the upper yarn catching guide member 24 has its suction mouth 24a turned to the yarn end catching position near the contact point between the package P and the traverse drum 18, and the yarn end of the upper yarn Y2 from the package P at this yarn end catching position. After sucking and catching the yarn, it is turned downward again to guide the upper yarn Y2 to the yarn joining device 21. The yarn joining device 21 connects the yarn end of the lower yarn Y1 guided by the lower yarn catching guide member 23 and the yarn end of the upper yarn Y2 guided by the upper yarn catching guide member 24 to connect one yarn. Thread Y Thereby, the winding of the yarn Y by the winding unit 13 can be resumed.

  The yarn clearer 22 always acquires information on the thickness of the traveling yarn Y. In other words, the yarn clearer 22 corresponds to the yarn thickness detecting unit in the present invention. Furthermore, the yarn clearer 22 detects an abnormal portion present in the yarn Y, which is thicker than a certain value or thin, as a yarn defect, based on the yarn thickness information. The yarn clearer 22 is provided with a cutter 22a. When a yarn defect is detected by the yarn clearer 22, the cutter 22a immediately cuts the yarn Y.

  When the yarn Y is cut after the yarn clearer 22 detects the yarn defect, the yarn defect remains in the upper yarn Y2. However, the yarn joining device 21 removes the yarn defect from the upper yarn Y2. Thus, the yarn joining of the lower yarn Y1 and the upper yarn Y2 is performed.

  Next, the electrical configuration of the automatic winder 1 will be described. As shown in FIG. 3, the machine base control device 4 of the automatic winder 1 is communicably connected to the unit control unit 26 of the plurality of winding units 2 and the control unit 52 of the doffing device 3. . The machine control device 4 monitors the operation state of each winding unit 2 and the operation state of the doffing device 3. The machine base control device 4 also includes a display operation unit 50 and a winding condition storage unit 51 that stores the winding conditions of each winding unit 2 set from the display operation unit 50.

  The unit control unit 26 of each winding unit 2 includes a CPU (Central Processing Unit) which is an arithmetic processing device, a ROM (Read-Only Memory) in which a program executed by the CPU and data used for the program are stored, It is composed of a RAM (Random Access Memory) for temporarily storing data during program execution, an input / output interface for inputting / outputting data to / from the outside, and the like. And the unit control part 26 controls operation | movement of each apparatus of the winding unit 2 mentioned above based on the winding conditions sent from the stand control apparatus 4. FIG. Further, the unit control unit 26 can communicate with the control unit 52 of the doffing device 3 and outputs a signal for causing the doffing device 3 to doff when the full package P is rolled up. .

  The display operation unit 50 includes a display 50a for displaying various information and an operation button group 50b (corresponding to the “input unit” of the present invention) for the operator to perform various settings. The operator can set and change various winding conditions for each winding unit 2 by operating and inputting the operation button group 50 b of the display operation unit 50 of the machine base control device 4. The winding condition set (changed) by the display operation unit 50 is stored in the winding condition storage unit 51. In particular, in this embodiment, as the winding condition setting by the display operation unit 50, the package winding speed of the winding unit 13 (that is, the yarn from the yarn feeding bobbin 8) according to the yarn unwinding characteristic of the yarn feeding bobbin 8. Y unwinding speed) setting is included. In the present embodiment, the display operation unit 50 of the machine base control device 4 corresponds to the “speed setting unit” of the present invention.

  The unit control unit 26 (winding control unit) that controls the winding operation of the winding unit 13 refers to the set value of the winding speed stored in the winding condition storage unit 51, and the yarn of the yarn feeding bobbin 8 The rotational speed of the traverse drum 18 is controlled according to the unwinding position (the position of the chess portion 8a).

  The setting of the package winding speed according to the yarn unwinding characteristic of the yarn feeding bobbin 8 will be described in detail below. FIG. 4 is a front view of the yarn feeding bobbin 8. The core tube 8b of the yarn supplying bobbin 8 has a tapered cylindrical shape in which one end in the axial direction (upper end in the figure) has a smaller diameter than the other end (lower end in the figure). Further, a range excluding both ends of the core tube 8b is a winding range in which the yarn Y is wound. If the yarn Y is wound around the entire winding range shown in FIG. 4, the yarn feeding bobbin 8 is fully wound. However, what is used in the automatic winder 1 is not limited to the fully-fed yarn feeding bobbin 8, and a yarn feeding bobbin 8 wound only halfway from the lower end of the winding range may be used. .

  As shown in FIG. 4, the winding range of the yarn supplying bobbin 8 is divided into a first range A1 and a second range A2. The first range A1 is a range located on the yarn unwinding side (upper side) of the winding range. When the chess portion 8a is located within the first range A1, the chess portion is detected by the optical sensor 36 (see FIG. 2) of the unwinding assisting device 15 that moves up and down (in the axial direction of the yarn feeding bobbin 8) together with the cylindrical body 30. 8a is detected. On the other hand, the second range A2 is a range located on the side opposite to the yarn unwinding side in the winding range, and is detected by the optical sensor 36 when the cylindrical body 30 of the unwinding assisting device 15 is at the lower limit position. It is located further below the position. That is, when the chess portion 8a can be detected by the optical sensor 36, the chess portion 8a is in the first range, and when the chess portion 8a cannot be detected by the optical sensor 36, the chess portion 8a is in the second range. Become.

  When the yarn Y is unwound from the yarn supplying bobbin 8, the yarn Y wound around the first range A1 is first unwound, and after all the yarn Y in the first range A1 is unwound, the second yarn Y is unwound. The yarn Y in the range A2 is unwound. That is, in a state where the yarn Y is unwound from the first range A1, the yarn Y of the yarn supplying bobbin 8 is still sufficiently left, and the yarn Y is unwound from the second range A2. Then, there is not much yarn Y left.

  When the yarn Y is unwound from the first range A1 located on the yarn unwinding side, the unwinded yarn Y forms a large balloon and does not rub against the yarn feeding bobbin 8 during unwinding.舒 Resistance is small. For this reason, even if the unwinding speed of the yarn Y (winding speed of the winding portion 13) is increased, abnormalities such as yarn breakage and sluffing hardly occur. On the other hand, when the yarn Y is unwound from the second range A2 on the side opposite to the yarn unwinding side, since the balloon is small, the unwinded yarn Y is easily rubbed against the yarn supplying bobbin 8, and the unwinding is performed. Resistance increases. For this reason, when the unwinding speed of the yarn Y is high, yarn breakage or sluffing is likely to occur. Therefore, the winding operation speed of the winding unit 13 when the yarn unwinding position (chess portion 8a) is in the second range A2 is set to a lower value than the first range A1 by the display operation unit 50.

  Furthermore, as shown in FIG. 4, the first range A1 is further divided into seven individual setting ranges A1a to A1g in the axial direction of the core tube 8b in order from the top. The display operation unit 50 individually sets the winding speed of the winding unit 13 for each of the seven ranges A1a to A1g. As a result, when the yarn Y is unwound at a position where the yarn feeding bobbin 8 is unwound, the unit control unit 26 performs the yarn at a predetermined winding speed corresponding to the individual setting range where the yarn unwinding position is located. The winding unit 13 is controlled so as to wind up.

  In addition, it can be detected as follows which of the seven ranges A1a to A1g of the first range A1 is the current yarn unwinding position (the position of the chess portion 8a). The optical sensor 36 for detecting the chess portion 8a is attached to the holding member 35 (see FIG. 2), and when the chess portion 8a is detected by the optical sensor 36, the ascending / descending amount from the origin position of the holding member 35 is It can be acquired from the number of pulses transmitted from the motor driver 38 to the cylinder drive motor 37 formed of a stepping motor. The number of transmitted pulses is stored in the count unit of the motor driver 38. Therefore, the unit control unit 26 obtains the descending amount from the origin position of the holding member 35 (the optical sensor 36) from the number of pulses transmitted from the motor driver 38 to the cylinder drive motor 37, and thereby the chess unit 8a. The height position (the axial position of the yarn feeding bobbin 8), that is, the yarn unwinding position is detected. In the present embodiment, the optical sensor 36 that detects the chess portion 8a of the yarn supplying bobbin 8 corresponds to the “thread detecting sensor” of the present invention. In addition, the unit controller 26 that detects the position of the chess portion 8a from the number of pulses transmitted to the cylinder drive motor 37 detects the position (yarn unwinding position) of the chess portion 8a of the yarn feeding bobbin 8. Corresponds to the “unrolling position detector”.

  The winding speeds of the seven ranges A1a to A1g of the first range A1 indicate that at which position of the yarn feeding bobbin 8 when the yarn Y is unwound, an abnormality such as yarn breakage or sluffing is likely to occur. It is set from the display operation unit 50 based on the information related to the yarn unwinding characteristic. More specifically, the shape of the yarn supplying bobbin 8 (the shape of the core tube 8b and the shape of the yarn layer), the type of yarn, or the method of winding the yarn in the spinning device when manufacturing the yarn supplying bobbin 8 (winding) If the conditions such as tighter or looser are different, the position of the yarn feeding bobbin 8 at which the yarn Y is unwinded changes easily. Therefore, the winding speeds of the seven ranges A1a to A1g of the first range A1 are set based on the various conditions that affect the yarn unwinding characteristics as described above. Alternatively, when the above-described various conditions are input from the display operation unit 50 by the operator, the machine control device 51 automatically sets the winding speeds for the seven ranges A1a to A1g based on these conditions. It may be configured to.

  FIG. 5 shows a setting example of winding speed control according to the yarn unwinding position. This is an example in the case of using the yarn feeding bobbin 8 in which the abnormality is most likely to occur in the range A1f and the range A1g, and then abnormal in the range A1a and the range A1b. In this case, as shown in FIG. 5, the winding speed VA in the range A1f and the range A1g is the lowest, and then the winding speed VB in the range A1a and the range A1b is small, and the winding in the other ranges A1c to A1e. The taking speed VC is set to be the largest. Note that the winding speed in the second range A2 is set to V2, which is lower than the minimum speed VA in the first range A1.

  In the present embodiment described above, the winding speed of the winding unit 13 can be set and changed by the display operation unit 50 in accordance with the yarn unwinding characteristic of the yarn feeding bobbin 8. As a result, the yarn can be wound as fast as possible within the range where no unwinding abnormality occurs, and the productivity is improved.

  More specifically, the winding range (first range A1) around which the yarn of the yarn supplying bobbin 8 is wound is divided into seven individual setting ranges A1a to A1g, and each of these seven individual setting ranges A1a to A1g. The winding speed of the winding unit is set. Thereby, even when the unwinding abnormality is likely to occur at a specific yarn unwinding position within the first range A1 of the yarn supplying bobbin 8, when unwinding at the yarn unwinding position, the winding speed is slowed down, The winding speed can be increased at other yarn unwinding positions. As a result, the yarn can be wound as fast as possible within a range where no unwinding abnormality occurs, and the productivity of the package P is improved.

  Next, modified embodiments in which various modifications are made to the embodiment will be described. However, components having the same configuration as in the above embodiment are given the same reference numerals and description thereof is omitted as appropriate.

1] Set the winding speed for each of the seven ranges A1a to A1g based on the data of the yarn unwinding position and the winding speed when the abnormality actually occurred, collected during the past use of the bobbin. May be. The setting of the winding speed based on the past abnormality information will be described below with an example.

The winding speed V1x of the winding unit 13 with respect to the range A1x (x is any one of a to g) of the first range A1, the reference speed is V0, the weighting factor is wx, and the increase speed is ΔV.
V1x = V0 + wx × ΔV
Calculate with the following formula. In addition, information on the frequency of occurrence of abnormality when the yarn Y is unwound from the range A1x, obtained from the data at the time of winding the past yarn, is directly input by the operator from the display operation unit 50, etc. It is stored in the winding condition storage unit 51 of the table control device 4. Then, the machine control device 4 determines the weighting coefficient wx based on the information on the frequency of occurrence of abnormality. In this embodiment, the winding condition storage unit 51 of the machine base control device 4 stores information relating to the frequency of unwinding abnormality for each of the individual setting ranges A1a to A1g. It corresponds to. Further, in this embodiment, the machine control device 4 that determines the weighting coefficient wx corresponds to the “speed setting unit” of the present invention in which the winding speed is set with reference to information on the frequency of unwinding abnormality. Note that the unit control unit 26 of each winding unit 2 may determine the weighting coefficient wx with reference to information regarding the frequency of unwinding abnormality stored in the winding condition storage unit 51.

  The setting method of the weighting factor wx is not particularly limited, but can be set as follows, for example. FIG. 6 is an explanatory diagram for determining the weighting factors of the seven individual setting ranges. First, all initial values of all weighting factors wx are set to 0. That is, the initial value of the winding speed in each range = reference speed V0.

  When winding of the package P is started at the above initial value and each yarn feeding bobbin 8 is used up, whether or not there is an unwinding abnormality in the yarn supplying bobbin 8, and what happens when the unwinding abnormality occurs? Get information about whether the error occurred in the range. Then, among the seven individual setting ranges A1a to A1g, the weighting coefficient wx is increased by 1 in the range where the unraveling abnormality has occurred, and the weighting coefficient wx is decreased by 1 in the range where the unraveling abnormality has occurred. In the example of FIG. 6, during the use of five lines, one abnormality occurs in the ranges A1a and A1b, and two abnormalities occur in the ranges A1f and A1g. By repeating this, it is possible to acquire the limit speed at which the unraveling abnormality does not occur for each of the seven ranges A1a to A1g.

  In this embodiment, when winding of the package P is started and one yarn feeding bobbin 8 is used up, the occurrence of unwinding abnormality in the yarn feeding bobbin 8 and the case where the unwinding abnormality occurs Shows an embodiment in which the setting speed of the individual setting range is modified by acquiring information on which range has occurred and changing the weighting factor in the range where the unraveling abnormality has occurred. I can't. Information on whether or not the unwinding abnormality has occurred in the yarn feeding bobbin 8 detected as described above and in what range the unwinding abnormality has occurred is acquired, and spinning is performed using this information. The apparatus may be maintained. In the process of spinning one yarn feeding bobbin 8 in the spinning device, the yarn feeding bobbin 8 in which the yarn breaking abnormality occurs is obtained by acquiring information on the range in which the unwinding abnormality has occurred. It is possible to estimate or identify the cause of spinning. The cause of spinning of the yarn feeding bobbin 8 in which the unwinding abnormality occurs may be due to the spinning device being stopped due to a power failure, the life of the consumables, and the like.

  Further, when the yarn feeding bobbin 8 is conveyed from the spinning device to the winding unit 2 by the conveyance tray, a storage unit is attached to the conveyance tray, and the spinning unit information for spinning the yarn feeding bobbin is recorded in the storage unit. Thus, the spinning unit that spun the yarn feeding bobbin 8 in which the unwinding abnormality has occurred can be specified. Further, since the range of one yarn feeding bobbin 8 in which the unwinding abnormality has occurred is acquired as information on the unwinding abnormality, the spinning unit that spun the yarn feeding bobbin 8 in which the unwinding abnormality has occurred Spinning process in which one yarn feeding bobbin 8 is spun with a yarn that causes unwinding abnormality (spinning length from the start of spinning the yarn feeding bobbin to the place where the yarn of the unwinding abnormality portion is spun) ) Can be specified. Further, the unit control unit 26 includes a notifying unit for notifying the spinning unit that has spun the yarn feeding bobbin 8 in which the unwinding abnormality has occurred and the process in which the malfunction has occurred are specified. .

2] In the above-described embodiment, the winding range is set for each of the plurality of individual setting ranges after the first range A1 of the winding range is divided into a plurality (seven) of individual setting ranges. That is, a plurality of discrete winding speeds are set for the first range A1. On the other hand, a continuous function equation between the yarn unwinding position of the yarn feeding bobbin 8 and the winding speed of the winding unit 13 is obtained, and the winding is performed from the detected yarn unwinding position according to this function equation. The taking speed may be calculated continuously.

3] In the above embodiment, the chess portion 8a cannot be detected by the optical sensor 36 in the second range A2. However, the remaining amount of yarn can be detected in the second range A2. For example, also in the second range A2, the winding speed can be controlled in accordance with the yarn unwinding position as in the first range A1. In order to detect the yarn unwinding position within the second range A2, for example, image analysis using a camera may be used.

  Alternatively, a configuration may be employed in which a plurality of optical sensors 36 are fixedly installed side by side on the side of the yarn feeding bobbin 8 and the position of the chess portion 8 a is detected by the plurality of optical sensors 36. In this modification, if a plurality of optical sensors 36 are arranged above and below the entire winding range including the first range A1, the winding range including not only the second range A2 but also the first range A1. It is also possible to detect the chess portion 8a as a whole.

4] The yarn unwinding position of the yarn feeding bobbin 8 can be detected without using the sensors such as the optical sensor 36 described above. For example, the yarn unwinding position of the yarn feeding bobbin 8 may be detected (estimated) from the winding time of the package P by the winding unit 13. Further, the yarn unwinding position of the yarn supplying bobbin 8 may be detected (estimated) from the length of the yarn wound around the package P. The length of the yarn wound around the package P can be detected from, for example, the rotational speed of the traverse drum 18. Or you may detect directly by the yarn length detection sensor provided in the yarn travel path.

5] As shown in FIG. 7, a yarn storage roller 60 for winding and temporarily storing the yarn unwound from the yarn supplying bobbin between the yarn supplying portion 11 and the winding portion 13 (package forming portion). A (yarn storage device) may be arranged. The winding unit 13 forms the package P by winding the yarn Y unwound from the yarn accumulating roller 60 around the winding tube 17. In this configuration, even when the yarn Y is not supplied from the yarn supply bobbin 8 such as when the yarn supply bobbin 8 is replaced or when a yarn breakage occurs, the yarn stored by the yarn storage roller 60 is supplied to the winding unit 13. be able to. Thereby, the interruption of the winding operation of the winding unit 13 is suppressed as much as possible, and the productivity of the package P is improved.

  When the present invention is applied to the winding unit 2 having such a yarn accumulating roller 60, the winding speed of the yarn accumulating roller 60 is set according to the yarn unwinding position of the yarn supplying bobbin 8. That is, the unwinding speed of the yarn Y from the yarn supplying bobbin 8 is controlled by controlling the winding speed of the yarn accumulating roller 60 positioned between the yarn supplying section 11 and the winding section 13. In this case, compared with the case where the winding speed of the winding unit 13 forming the package P is controlled, the quality deterioration of the package P can be suppressed.

6] In the above-described embodiment, the problem is that the yarn unwinding position where the unwinding abnormality easily occurs between the yarn supplying bobbins 8 is problematic. The winding speed of the take-up unit 13 is set. However, the winding speed may be set depending on other differences in yarn unwinding characteristics. For example, in a spinning device, a yarn feeding bobbin 8 loosely wound with a low tension generally has unwinding abnormality such as yarn breakage or sluffing as compared with a yarn feeding bobbin 8 wound with a specified tension. Cheap. Therefore, when the yarn of the yarn supplying bobbin 8 is loosely wound, the winding speed may be kept low as a whole.

DESCRIPTION OF SYMBOLS 1 Automatic winder 4 Machine control device 8 Yarn feeding bobbin 8a Chess part 11 Yarn feeding part 13 Winding part 16 Unwinding assisting device 18 Traverse drum 26 Unit control part 30 Cylinder 36 Optical sensor 37 Cylinder drive motor 50 Display operation 50a Operation button group 51 Winding condition storage unit P Package

Claims (9)

A yarn feeding section for holding a yarn feeding bobbin;
A winding unit for winding the yarn unwound in one of the axial directions from the yarn feeding bobbin;
A speed setting unit capable of setting a winding speed of the winding unit;
A winding control unit that controls the winding unit based on the winding speed set by the speed setting unit;
An unwinding position detection unit for detecting the unwinding position of the yarn feeding bobbin,
The speed setting unit
In the yarn supplying bobbin, the winding range around which the yarn is wound is divided into a plurality of individual setting ranges, and the winding speed of the winding unit is set for each of the plurality of individual setting ranges,
The winding control unit
Depending on which range of the plurality of individual setting ranges the yarn unwinding position detected by the unwinding position detection unit is set for the range in which the yarn unwinding position is located The yarn winding device, wherein the winding unit is controlled to wind the yarn at the wound winding speed. A yarn detection sensor for detecting an end of the yarn layer wound around the yarn feeding bobbin on the yarn unwinding side;
A unwinding assisting device having a cylindrical body that assists in unwinding the yarn while moving in the axial direction of the yarn feeding bobbin as the unwinding of the yarn proceeds.
A stepping motor that moves the cylindrical body to the opposite side of the yarn unwinding side along the axial direction of the yarn feeding bobbin in response to detection of the yarn by the yarn detection sensor;
A count unit that counts the number of pulses transmitted to the stepping motor in order to drive the stepping motor;
The unraveling position detector is
The yarn winding device according to claim 1, wherein when the cylinder is moved, the current yarn unwinding position is detected from the number of pulses counted by the counting unit.   3. The yarn winding according to claim 1, wherein the speed setting unit includes an input unit for inputting a setting value of the winding speed for each of the plurality of individual setting ranges. apparatus. An abnormality information storage unit that stores information on the frequency of unwinding abnormality that occurs when the yarn is unwound in each of the plurality of individual setting ranges;
The speed setting unit
The winding speed is set for each of the plurality of individual setting ranges with reference to information on the frequency of the unraveling abnormality stored in the abnormality information storage unit. Yarn winding device. A package forming unit for winding a yarn unwound from the yarn supplying bobbin around a winding tube to form a package;
The winding unit is a yarn storage device that is arranged between the yarn supplying unit and the package forming unit, and winds and temporarily stores the yarn unwound from the yarn supplying bobbin,
The yarn winding device according to any one of claims 1 to 4, wherein the package forming unit winds the yarn unwound from the yarn accumulating device onto the winding tube. A yarn winding method for winding a yarn unwound from a yarn supplying bobbin,
In the yarn supplying bobbin, the winding range around which the yarn is wound is divided into a plurality of individual setting ranges, and for each of the plurality of individual setting ranges, a winding speed is set according to the yarn unwinding characteristics,
A yarn winding method comprising winding a yarn unwound from the yarn feeding bobbin at the set winding speed. A yarn feeding section for holding a yarn feeding bobbin;
A winding unit for winding the yarn unwound in one of the axial directions from the yarn feeding bobbin;
A winding control unit for controlling the winding unit;
An unwinding position detector for detecting the unwinding position of the yarn feeding bobbin;
An abnormality information storage unit that stores information on the unwinding abnormality, including the yarn unwinding position when the unwinding abnormality of the yarn has occurred, and
The winding control unit
A yarn winding device characterized by identifying a malfunction of a spinning device that spun a yarn feeding bobbin in which an unwinding abnormality occurs from abnormality information stored in the abnormality information storage unit.   The said winding control part was provided with the alerting | reporting part which alert | reports the specific result, when the malfunction of the spinning apparatus which spun the yarn feeding bobbin in which unwinding abnormality generate | occur | produces is specified. Yarn winding device. A yarn winding device according to claim 7 or 8,
A spinning device comprising a plurality of spinning units for spinning the yarn feeding bobbin;
A tray conveying device for conveying the yarn feeding bobbin between the yarn winding device and the spinning device,
The tray transport device has a transport tray for placing and transporting the yarn feeding bobbin, and a storage unit provided in the transport tray,
The storage unit stores information about a spinning unit that spun a yarn feeding bobbin placed on the transport tray,
The winding control unit includes a spinning unit that spins a yarn feeding bobbin in which unwinding abnormality occurs from information stored in the storage unit and abnormality information stored in the abnormality information storage unit, and a spinning unit thereof. A yarn winding system characterized by identifying a spinning process in which an unwinding abnormality has occurred.

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