JP2023089779A - Yarn winder - Google Patents

Abstract

To provide a yarn winder capable of widening a set width of a production speed by allowing a yarn winding speed to be more flexibly changed.SOLUTION: In a yarn winder, a winder unit 10 unwinds a yarn 20 from a yarn supply package 21 and winds the yarn into a package 30. The winder unit 10 comprises: an optical sensor 45 which is arranged on a side of the yarn supply package 21 and detects a yarn layer of the yarn supply package 21; and a sensor moving device 60 which has a drive motor 61 for moving the optical sensor 45 in a predetermined moving direction D2.SELECTED DRAWING: Figure 2

Description

The present invention relates to a yarn winder.

Conventionally, in a yarn unwinding device for a package, there is known a technique of monitoring the winding diameter of the package by a plurality of optical sensors arranged facing the large-diameter side end surface of the package (see Patent Document 1). A plurality of optical sensors are arranged in parallel in the radial direction of the large-diameter side end surface of the package, and detect the position of the outer peripheral edge of the yarn layer. Thereby, the winding diameter of the package is measured. In this device, the balloon length that reduces the unwinding tension is calculated based on the winding diameter of the package, and the balloon length is adjusted.

JP-A-4-85266

When a plurality of optical sensors are arranged in a radial direction as in the conventional device described above, the position of each optical sensor is fixed, so the package diameter can be detected only in a plurality of stages corresponding to the number of sensors. is. For example, in a configuration in which one inner layer sensor and one outer layer sensor are provided, it is possible to detect the package diameter only in three stages: the outer layer, the middle layer, and the inner layer. Therefore, when changing the unwinding speed (winding speed) based on the package diameter, the speed can be changed (adjusted) in three steps.

With a limited number of speed changes (adjustments), there is a limit to increasing the production speed. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a yarn winding machine capable of widening the setting range of the production speed by changing the speed more flexibly.

The present invention is a yarn winding machine that unwinds a yarn from a yarn supply package and winds it onto a winding package, comprising: an optical sensor arranged on the side of the yarn supply package for detecting a yarn layer of the yarn supply package; and a sensor moving device having a drive source for moving the optical sensor in a predetermined movement direction.

According to this yarn winding machine, the optical sensor is moved in the moving direction by the driving source of the sensor moving device. The optical sensor can be moved in response to changes in the diameter of the yarn feed package. Therefore, the yarn winding speed can be changed more flexibly according to the diameter of the yarn supply package. As a result, the setting range of the production speed can be widened.

The yarn winding machine may further include a sensor drive control section that controls the drive source of the sensor moving device based on the detection information of the yarn layer by the optical sensor. In this case, the optical sensor can be moved more accurately and appropriately in response to changes in the diameter of the yarn supply package.

The yarn winding machine includes a package diameter acquisition unit that acquires the diameter of the yarn package based on the yarn layer detection information by the optical sensor; A storage unit that stores the relationship with the index related to winding may be further provided. In this case, it is possible to provide or notify the user of the relationship between the diameter of the yarn supply package and the index relating to winding of the yarn, thereby enhancing the convenience in production of the yarn winding machine.

The yarn winding machine further includes an instruction voltage acquisition unit that acquires an instruction voltage as an index in the tension applying device that applies tension to the yarn, and the storage unit stores the diameter of the yarn supply package acquired by the package diameter acquisition unit and the instruction voltage. The relationship with the instructed voltage in the tensioning device acquired by the voltage acquisition unit may be stored. In this case, the tension applied to the yarn by the tension applying device can be grasped according to the diameter of the yarn supply package. For example, reference data is provided for the user to determine the tension setting value.

The yarn winding machine further includes a factor estimating unit for estimating a yarn breakage factor as an index, and the storage unit stores the diameter of the yarn supply package acquired by the package diameter acquiring unit and the yarn length estimated by the factor estimating unit. The relationship with the yarn breakage factor may be stored. The relationship between the diameter of the yarn supply package and the cause of yarn breakage is provided to the user, enabling all control settings (eg, lot setting, etc.) in yarn winding.

The yarn winding machine includes a package diameter acquisition unit that acquires the diameter of the yarn package based on the yarn layer detection information by the optical sensor, and winds the yarn based on the diameter of the yarn package acquired by the package diameter acquisition unit. A winding speed control section for controlling the speed may further be provided. In this case, the unwinding speed (winding speed) can be flexibly changed based on the diameter of the yarn supplying package, and the production speed can be improved.

The sensor moving device may move the optical sensor in a moving direction perpendicular to the running direction of the yarn. The diameter of the yarn supply package varies in the direction perpendicular to the running direction of the yarn. Therefore, by moving the optical sensor by the sensor moving device, the optical sensor can easily follow changes in the diameter of the yarn feeding package.

The drive source may be a stepping motor. According to this configuration, it is possible to reliably control the position of the optical sensor with a simpler configuration.

According to the present invention, the setting range of the production speed can be widened by changing the yarn winding speed more flexibly.

1 is a front view of an automatic winder having a winder unit according to one embodiment of the present invention; FIG. FIG. 2 is a schematic diagram and a block diagram showing a schematic configuration of a winder unit in FIG. 1; FIG. FIG. 4 is a diagram showing a configuration example of an optical sensor and a sensor moving device installed on the side of a yarn supply package; FIG. 10 is a diagram for explaining movement of an optical sensor in accordance with a change in diameter of a yarn feeding package; FIG. 4 is a diagram showing speed control in a unit control section in comparison with conventional speed control; It is a figure which shows an example of the relationship between the package diameter and the instruction|indication voltage which are displayed on the display part of a machine control apparatus. It is a figure which shows an example of the thread|yarn breakage occurrence tendency with respect to the package diameter displayed on the display part of a machine control apparatus.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

An overall configuration of an automatic winder 1 including a winder unit (yarn winder) 10 of the present embodiment will be described with reference to FIG. In this specification, the terms "upstream" and "downstream" mean upstream and downstream in the running direction of the yarn during winding.

As shown in FIG. 1, the automatic winder 1 includes a plurality of winder units 10 arranged side by side, an automatic doffing device 80, and a machine control device 90 as main components. Each winder unit 10 winds the yarn 20 unwound from the yarn supply package 21 onto a winding bobbin 22 (see FIG. 2) while traversing the yarn to form a package (winding package) 30 . Traverse means giving a reciprocating motion to the wound yarn. Package 30 is a twill package. The automatic winder 1 is, for example, a rewinding machine that forms a cone-shaped package 30 from a cone-shaped yarn supply package 21 .

When the packages 30 are full (full) in each winder unit 10, the automatic doffing device 80 travels to the position of the winder unit 10 and discharges the full package 30 from the winder unit 10. At the same time, an empty bobbin is supplied to the winder unit 10 concerned.

The machine control device 90 includes a setting section 91 , a data storage section 92 , a display section 93 and a speaker 94 . The setting unit 91 can set each winder unit 10 by inputting a predetermined setting value or selecting an appropriate control method by the operator. The predetermined set value that the operator inputs to the setting unit 91 includes bobbin information for specifying the type (shape) of the winding bobbin 22 on which the yarn 20 is wound. The bobbin information is not limited to being specified by the operator directly inputting the type of the winding bobbin 22 to be used. For example, if the type of yarn 20 to be wound determines the type of winding bobbin 22 to be used, the bobbin information may be identified from the type of yarn 20 entered by the operator.

The setting unit 91 also receives settings for various control modes, which will be described later. These various control modes are entered by the operator. The setting section 91 sets the control mode input by the operator for each winder unit 10 . As shown in FIG. 2, control is performed by the unit control section 50 so that each winder unit 10 operates according to the set control mode. The data storage unit 92 stores, for example, data indicating the relationship between the diameter of the yarn supply package 21 and an index relating to winding of the yarn in the winder unit 10 . The data stored in the data storage unit 92 is notified to the user using the display unit 93, the speaker 94, or the like. The display section 93 is configured to be able to display the winding status of the yarn 20 of each winder unit 10, the content of the trouble that has occurred, and the like. The display unit 93 displays information related to the data stored in the data storage unit 92 , such as information on the frequency of yarn breakage corresponding to the diameter of the yarn supply package 21 and information on the indicated voltage of the tensioning device 13 . Note that the display unit 93 may be configured by a touch panel, and the setting unit 91 may be included in the display unit 93 . The speaker 94 notifies information related to the data displayed on the display unit 93, for example, information on the frequency of yarn breakage corresponding to the diameter of the yarn supply package 21 and information on the indicated voltage of the tension applying device 13 by voice.

The display unit 93 displays, for example, the relationship between the diameter of the yarn supply package 21 and an index relating to winding of the yarn in the winder unit 10 . This display example will be described later with reference to FIGS. The speaker 94 may notify the user of, for example, the diameter of the yarn supply package 21 at which yarn breakage is likely to occur.

Next, the configuration of the winder unit 10 will be specifically described with reference to FIG. Each winder unit 10, as shown in FIG. 2, includes a winding unit main body 17 and a unit control section 50 as main components.

The unit control section 50 includes, for example, a CPU, a RAM, a ROM, an I/O port, and a communication port. A program for controlling each component of the winding unit main body 17 is recorded in the ROM. The I/O port and the communication port are connected to each part (details of which will be described later) of the winding unit main body 17 and the machine base control device 90 so as to be able to communicate control information and the like. Thereby, the unit control section 50 can control the operation of each section provided in the winding unit main body 17 .

The winding unit main body 17 includes, in the yarn traveling path between the yarn supplying package 21 and the touch roller 29, the yarn unwinding auxiliary device 12, the tension applying device 13, and the yarn joining device in this order from the yarn supplying package 21 side. 14 , a photoelectric type fixed length device (yarn speed detector) 15 , and a yarn monitoring device 16 . A yarn feeding section 11 is provided at the lower portion of the winding unit main body 17 .

The yarn supplying section 11 is configured so as to be able to hold, at a predetermined position, the yarn supplying package 21 conveyed by an operator or by a bobbin conveying system (not shown). A core member (not shown) is erected on the mounting plate 19a of the mounting table 19 located at the lower end of the winder unit 10, for example, toward the direction of the center axis L slightly inclined with respect to the horizontal plane. . By inserting the core member into the center hole of the yarn supplying package 21, the yarn supplying package 21 maintains a predetermined posture (see FIGS. 2 and 3). The yarn is unwound by the winder unit 10 while the yarn supply package 21 maintains this posture.

The yarn unwinding auxiliary device 12 has a regulating member 40 provided above the core tube of the yarn supplying package 21, and by varying the unwinding tension of the yarn 20 from the yarn supplying package 21, the yarn supplying package 21 is moved. Assists in unwinding the yarn 20 from the The regulating member 40 contacts the balloon of the yarn 20 formed on the upper part of the yarn supplying package 21 by the rotation and centrifugal force of the yarn 20 unwound from the yarn supplying package 21, and controls the balloon of the yarn 20 to an appropriate size. By doing so, the unwinding of the yarn 20 is assisted. The restricting member 40 is also called a balloon guide. A kink preventer for preventing twisting of the thread 20 and a bobbin thread sensor for detecting the bobbin thread are provided near the regulating member 40 .

The tension applying device 13 applies a predetermined tension to the running yarn 20 . As the tension applying device 13, for example, a gate-type device in which movable comb teeth are arranged with respect to fixed comb teeth can be used. The movable comb tines are rotated by a rotary solenoid so as to be engaged or disengaged with respect to the fixed comb tines. In addition to the gate-type device, for example, a disk-type device can be adopted as the tension applying device 13 . The unit control section 50 determines the command voltage to be transmitted to the tension applying device 13 in consideration of the actual tension value measured by the tension measuring device 18 . The command voltage transmitted to the tension applying device 13 is also transmitted to the command voltage acquisition section 56 of the unit control section 50 .

When the yarn monitoring device 16 detects a yarn defect and cuts the yarn, or when the yarn being unwound from the yarn supplying package 21 is broken, the yarn joining device 14 removes the yarn from the yarn supplying package 21. The lower thread and the upper thread from the package 30 are spliced. A mechanical knotter, a splicer using a fluid such as compressed air, or the like can be used as a splicing device that splices the needle thread and the bobbin thread. Alternatively, the splicing device 14 may not be provided, and an operator may manually splice the needle thread and the bobbin thread.

The photoelectric lengthening device 15 is a non-contact photoelectric lengthening device that detects the yarn speed, which is the running speed of the yarn 20 , without touching the yarn 20 . Specifically, the photoelectric type fixing device 15 projects the yarn 20 onto the light-receiving element, and processes changes in the photoelectric current that occur when the projected yarn 20 runs, using a so-called spatial filter principle. , the yarn speed of the yarn 20 wound on the winding bobbin (bobbin) 22 or the package 30 is detected.

The yarn monitoring device 16 includes a head 49 having a sensor (not shown) for detecting the thickness of the yarn 20, and an analyzer 54 for processing the yarn thickness signal from this sensor. The analyzer 54 is provided within the unit control section 50 . The yarn monitoring device 16 detects yarn defects such as slabs by monitoring the yarn thickness signal from the sensor. A cutter 39 is provided near the head 49 to cut the yarn 20 immediately when the yarn monitoring device 16 detects a yarn defect.

Below the yarn joining device 14, a bobbin thread catching member 25 that catches the yarn end of the bobbin thread and guides it to the yarn joining device 14 is provided. An upper thread catching member 26 for catching the thread end of the needle thread and guiding it to the thread joining device 14 is provided above the thread joining device 14 . The bobbin thread catching member 25 includes a bobbin thread pipe arm 33 and a bobbin thread suction port 32 formed at the tip of the bobbin thread pipe arm 33 . The needle thread catching member 26 includes a needle thread pipe arm 36 and a needle thread suction port 35 formed at the tip of the needle thread pipe arm 36 .

The lower thread pipe arm 33 and the upper thread pipe arm 36 are configured to be rotatable around shafts 34 and 37, respectively. Appropriate negative pressure sources are connected to the lower thread pipe arm 33 and the upper thread pipe arm 36, respectively. The bobbin thread pipe arm 33 is configured to generate a suction flow in the bobbin thread suction port 32 to suck and catch the thread end of the bobbin thread. The needle thread pipe arm 36 is configured to generate a suction flow in the needle thread suction port 35 to suck and catch the thread end of the needle thread. Each of the lower thread pipe arm 33 and the upper thread pipe arm 36 is provided with a shutter (not shown) on its base end side. Each shutter is opened and closed according to a signal from the unit control section 50 . As a result, the stop and generation of the suction flow from the lower thread suction port 32 and the upper thread suction port 35 are controlled.

The winding unit main body 17 includes a cradle 23 that detachably and rotatably supports the winding bobbin 22, and a touch roller 29 that is rotatable in contact with the outer peripheral surface of the winding bobbin 22 or the outer peripheral surface of the package 30. more ready. The winding bobbin 22 has a cone shape (conical shape) with different diameters at both ends. The winding unit main body 17 is provided with an arm-type traverse device 70 for traversing the yarn 20 near the cradle 23 . Rewind to 30. A guide plate 28 is provided slightly upstream of the traverse location. A guide plate 28 guides the yarn 20 on the upstream side to the traverse point. Further upstream of the guide plate 28, a ceramic traverse fulcrum 27 is provided. The traverse device 70 traverses the yarn 20 in the direction indicated by the arrow in FIG.

The winding unit main body 17 forms the cone-shaped package 30 by causing the cone-shaped winding bobbin 22 to wind the yarn 20 while traversing the yarn 20 by the traverse device 70 .

The traverse device 70 has a traverse drive motor 76 that reciprocates a traverse arm (not shown). The traverse drive motor 76 is composed of, for example, a servomotor or the like. The operation of the traverse drive motor 76 is controlled by the unit control section 50 . Traverse drive motor 76 may be a stepper motor or other motor such as a voice coil motor. A hook-shaped yarn guide portion 73 is formed at the tip of the traverse arm. The traverse device 70 can traverse the yarn 20 wound on the package 30 by causing the traverse arm to reciprocate (moving the yarn guide portion 73) while the yarn guide portion 73 guides the yarn 20. .

The touch roller 29 abuts on the outer peripheral surface of the winding bobbin 22 or the package 30 and is driven to rotate as the winding bobbin 22 or the package 30 rotates. The touch roller 29 has a cylindrical shape with both ends having the same diameter. The outer peripheral surface of the package 30 is pressed against the touch roller 29 . The touch roller 29 has a function of shaping the package 30 . Further, the touch roller 29 has a function of winding the traversed yarn 20 onto the package 30 while holding it at the traversed position. The touch roller 29 is provided with a rotation speed sensor 31 that detects the rotation speed of the touch roller 29 . The rotation speed sensor 31 transmits a rotation detection signal corresponding to the rotation speed of the touch roller 29 to the unit control section 50 . As the rotation speed sensor 31, various sensors such as a sensor that measures changes in magnetism of a magnet attached to the touch roller 29 can be used.

The cradle 23 has a pair of a first cradle arm 23a and a second cradle arm 23b, and a connecting portion 23c connecting the proximal end portion of the first cradle arm 23a and the proximal end portion of the second cradle arm 23b. ing. The cradle 23 is configured to be rotatable around a rotating shaft 48 provided in the connecting portion 23c. The cradle 23 rotates to absorb an increase in the diameter of the package 30 due to the winding of the yarn 20 onto the winding bobbin 22 .

A first bobbin holding portion B1 for holding one end of the winding bobbin 22 is provided at the tip of the first cradle arm 23a. A second bobbin holding portion B2 for holding the other end of the winding bobbin 22 is provided at the tip of the second cradle arm 23b. A package drive motor 41 composed of a servomotor is attached to the tip of the first cradle arm 23a. The package driving motor 41 rotates the winding bobbin 22 held by the first bobbin holding portion B1 and the second bobbin holding portion B2 in order to wind the yarn 20 onto the winding bobbin 22 . The package driving motor 41 rotates the package 30 (winding bobbin 22) in a forward direction to rotate the package 30 (winding bobbin 22) in the winding direction, and reversely rotates the package 30 in a reverse winding direction opposite to the winding direction. can be driven to rotate. A motor shaft (rotating shaft) of the package drive motor 41 is coupled to the first bobbin holding portion B1 that holds the winding bobbin 22 so as not to rotate relative to it. The package drive motor 41 rotates the winding bobbin 22 by rotating the first bobbin holding portion B1 (so-called direct drive method).

The operation of the package drive motor 41 is controlled by the package drive control section 52 of the unit control section 50 . The package drive motor 41 is not limited to a servomotor, and various motors such as a step motor and an induction motor can be used. The package drive motor 41 is provided with a rotation speed sensor 24 that detects the rotation speed of the motor shaft of the package drive motor 41 . The rotation speed sensor 24 transmits a rotation detection signal corresponding to the rotation speed of the motor shaft to the winding speed acquisition section 51 of the unit control section 50 .

Each winder unit 10 holds one optical sensor 45 arranged to the side of the yarn supplying package 21 to detect the yarn layer of the yarn supplying package 21, the optical sensor 45, and moves the optical sensor 45 in the moving direction D2. and a sensor moving device 60 that allows the sensor to move. FIG. 3 is a diagram showing a configuration example of the optical sensor 45 and the sensor moving device 60 installed on the side of the yarn supplying package 21. As shown in FIG. As shown in FIG. 3, the optical sensor 45 has a light emitting/receiving portion 45a directed parallel to the central axis L of the yarn supplying package 21 and facing the outer peripheral surface of the yarn supplying package 21. As shown in FIG. The optical sensor 45 detects the absence of the yarn layer of the yarn supply package 21 by detecting reflected light from the yarn supply package 21 with the light emitting/receiving section 45a. The optical sensor 45 detects the existence of the yarn layer of the yarn package 21 on the optical path of the light emitting/receiving portion 45a by not detecting the reflected light from the yarn supplying package 21 by the light emitting/receiving portion 45a.

The sensor moving device 60 is configured to move the optical sensor 45 in a moving direction D2 perpendicular to the running direction D1 of the yarn 20 . The running direction D1 of the yarn 20 may be parallel to the central axis L of the yarn supply package 21, for example. A moving direction D<b>2 of the optical sensor 45 by the sensor moving device 60 is parallel to the radial direction of the yarn feeding package 21 attached to the mounting table 19 . That is, the moving direction D2 of the optical sensor 45 and the radial direction of the yarn supplying package 21 are the same.

The sensor moving device 60 is configured to move the optical sensor 45 by, for example, a ball screw structure. As an example, the sensor moving device 60 includes a housing 62 fixed to the mounting plate 19a and/or the side plate 19b of the mounting table 19, and a screw shaft 63 fixed within the housing 62 and extending in the moving direction D2. , and a moving portion 64 that includes a nut portion 64a that meshes with the screw shaft 63 and is movable in the moving direction D2 by rotation of the screw shaft 63. As shown in FIG. For example, the optical sensor 45 is fixed on the moving part 64 . A moving portion 64 is arranged downstream (above) the optical sensor 45 in the running direction D1 of the yarn 20, and a slide plate portion 67 is arranged upstream (below) the optical sensor 45 in the running direction D1 of the yarn 20. ing. In other words, the optical sensor 45 is provided between the moving portion 64 and the slide plate portion 67 . The slide plate portion 67 is, for example, an L-shaped plate-like member, and is slidable along corners of a rectangular guide portion 65 extending in the moving direction D2. A guide bar insertion portion 68 is fixed to the slide plate portion 67 , and a guide bar 66 is inserted through the guide bar insertion portion 68 . The screw shaft 63 and the guide bar 66 extend in parallel (in the movement direction D2), and the linear movement area of the optical sensor 45 is positioned between them. The moving portion 64 , the slide plate portion 67 and the guide bar insertion portion 68 are guided by the screw shaft 63 , the guide portion 65 and the guide bar 66 and move in the moving direction D<b>2 while holding the optical sensor 45 .

The sensor moving device 60 has a drive motor 61 connected to one end of a screw shaft 63 . The drive motor 61 is, for example, a stepping motor. The drive motor 61 is fixed to the housing 62 and is controlled by the sensor drive control section 59 of the unit control section 50 to rotate the screw shaft 63 . The drive motor 61 is a drive source that moves the optical sensor 45 in the movement direction D2. The drive motor 61 may be a stepping motor, a servo motor, or the like.

Returning to FIG. 2, in addition to the analyzer 54 described above, the unit control section 50 includes a winding speed acquisition section 51, a package drive control section 52, a package diameter acquisition section 53, a factor estimation section 55, an instruction voltage acquisition section 56, a storage section, and a 57 , a data transmission unit 58 and a sensor drive control unit 59 .

The winding speed acquisition unit 51 acquires the winding speed of the yarn 20 by acquiring a signal transmitted from the rotation speed sensor 24 of the package drive motor 41 . In the winder unit 10 , the winding speed of the yarn 20 is equal to the unwinding speed of the yarn 20 from the yarn supply package 21 .

A package drive control unit (winding speed control unit) 52 controls the winding speed of the yarn 20 by controlling the package drive motor 41 based on the diameter of the yarn supply package 21 acquired by the package diameter acquisition unit 53. do. The package drive control section 52 controls the package drive motor 41 so that the winding speed of the yarn 20 is adjusted to the speed shown in the predetermined control mode according to the diameter of the yarn supply package 21 . Alternatively, the package drive control section 52 may store in advance an appropriate winding speed based on the diameter of the yarn supplying package 21 or the unwinding tension estimated based on the diameter of the yarn supplying package 21 . The package drive control section 52 may control the package drive motor 41 so that the winding speed of the yarn 20 is adjusted to an appropriate winding speed.

The package diameter acquiring section 53 acquires the diameter of the yarn supplying package 21 based on the detection information of the yarn layer of the yarn supplying package 21 by the optical sensor 45 . The optical sensor 45 is controlled by, for example, the sensor drive control unit 59 so as to repeat stoppage and slight movement, and when the optical sensor 45 detects the absence of the yarn layer, the diameter of the yarn supply package 21 is obtained. You may

For example, based on the signal output from the yarn monitoring device 16, the factor estimator 55 determines whether the cause of the yarn breakage is caused by a yarn defect (weak yarn, uneven yarn, etc.) or not. It is estimated whether it is caused by a defective shaft (sluffing, etc.). The factor estimation unit 55 estimates and stores the yarn breakage factor in association with the diameter of the yarn supply package 21 acquired by the package diameter acquisition unit 53 .

The command voltage acquisition unit 56 acquires the command voltage in the tension applying device 13 . The instructed voltage for the tension applying device 13 is stored in association with the diameter of the yarn supplying package 21 acquired by the package diameter acquiring section 53 .

The storage unit 57 generates and stores data indicating the relationship between the diameter of the yarn supply package 21 and the index for winding the yarn in the winder unit 10 according to the control mode described above. The data transmission section 58 transmits the data stored in the storage section 57 to the machine base control device 90 and causes the data storage section 92 to store the data.

The sensor drive control section 59 controls the drive motor 61 of the sensor moving device 60 based on the information detected by the optical sensor 45 . The sensor drive control unit 59 controls the drive motor 61 and controls the movement of the optical sensor 45 so that the optical sensor 45 repeats slight movement and stop. More specifically, the sensor drive control section 59 may control the optical sensor 45 to move slightly when the optical sensor 45 detects the absence of the yarn layer. The sensor drive control section 59 may gradually move the optical sensor 45 when the yarn layer of the yarn supply package 21 is no longer detected. As shown in FIG. 4, the optical sensor 45 is positioned at a position corresponding to the outermost yarn layer position Pa in the yarn supply package 21A for the large diameter yarn supply package 21A at the initial stage of unwinding. As it progresses, the yarn supply package 21 becomes thinner. Since the yarn supplying package 21 is a twill wound package, its diameter is reduced while maintaining the cone shape. When the optical sensor 45 no longer detects the yarn layer position Pa, the optical sensor 45 is controlled so as to approach the center axis line L when viewed from the side. The optical sensor 45 is moved to a position corresponding to the yarn layer position Pb of the outermost layer in the small-diameter yarn supply package 21B.

According to the winder unit 10 of this embodiment, the driving motor 61 of the sensor moving device 60 moves the optical sensor 45 in the moving direction D2. The optical sensor 45 can be moved according to the change in diameter of the yarn supply package 21 . Therefore, the winding speed of the yarn 20 can be changed more flexibly according to the diameter of the yarn supply package 21 . As a result, the setting range of the production speed can be widened.

The winder unit 10 includes a package diameter acquiring section 53 that acquires the diameter of the yarn supplying package 21 based on the yarn layer detection information by the optical sensor 45, and the diameter of the yarn supplying package 21 acquired by the package diameter acquiring section 53. A package drive control unit 52 for controlling the winding speed of the warp yarn 20 is further provided. Therefore, the unwinding speed (winding speed) can be flexibly changed based on the diameter of the yarn supplying package 21, and the production speed can be improved. As a result, it is possible to widen the setting range of the production speed.

A specific example of the winding speed will be described with reference to FIG. In FIG. 5, the speed control in the conventional unit control section is indicated by a thick dashed line, and the speed control in the unit control section 50 of the present embodiment is indicated by a thick solid line. Conventionally, for example, when using two optical sensors fixed at two positions in the radial direction, the timing (time T ₁ in the figure) at which the outer layer sensor switches from ON to OFF and the timing at which the inner layer sensor switches from ON to OFF Control for switching the winding speed was performed at two points at the timing of switching to (time T ₂ in the figure). Note that unwinding is performed at a low speed _V0 until time _T0 . That is, from time _T0 to time _T1 , unwinding is performed at a relatively low outer layer speed _V1 , and from time _T1 to time _T2 , unwinding is performed at a high intermediate layer speed _V2 . , unwinding was carried out at a relatively low velocity _V1 as the outer layer velocity from time _T2 until the end of unwinding was approached. On the other hand, in this embodiment, as indicated by the solid line in the figure, the speed can be changed more flexibly than the three-step speed control. More specifically, at the timings of conventional switching control (time T ₀ , T ₁ , and T ₂ ), unwinding is performed at the same winding speed as before, but during the time zone between these timings, Unwinding is performed at a higher winding speed than before. As a result, the production speed is improved.

The winder unit 10 further includes a sensor drive control section 59 that controls the drive motor 61 of the sensor moving device 60 based on the yarn layer detection information from the optical sensor 45 . As a result, the optical sensor 45 can be moved more accurately and appropriately in response to changes in the diameter of the yarn feeding package 21 .

The winder unit 10 further includes a storage section 57 that stores the relationship between the diameter of the yarn supply package 21 acquired by the package diameter acquisition section 53 and the index relating to the winding of the yarn 20 in the winder unit 10 . Thereby, the relationship between the diameter of the yarn supply package 21 and the index relating to the winding of the yarn 20 can be provided or notified to the user, and the convenience in production of the winder unit 10 can be enhanced.

More specifically, the winder unit 10 further includes an instruction voltage acquisition section 56 that acquires an instruction voltage as an index for the tensioning device 13, and the storage section 57 stores the diameter of the yarn supplying package 21 and the tensioning device 13 and the relationship with the indicated voltage at . The winder unit 10 further includes a factor estimating section 55 for estimating the yarn breakage factor as an index, and the storage section 57 stores the relationship between the diameter of the yarn supply package 21 and the yarn breakage factor.

These data are utilized, for example, in "optimal speed control setting" and "package density priority setting" as control modes. In the “optimum speed control setting”, the winding speed of the yarn 20 is automatically adjusted by the package drive control section 52 . The storage unit 57 stores diameter data of the yarn supply package 21 when yarn breakage occurs, and the data is stored in the data storage unit 92 of the machine control device 90 . Based on the data collected in the data storage unit 92, for example, if yarn breakage occurs frequently at a position of 130 mm in diameter, the unwinding speed is automatically reduced at a position of 130 mm±3 mm to control the winding of the yarn 20. is done. In contrast to this, for example, at a location (diameter) where yarn breakage does not occur but the command voltage of the tensioning device 13 is high, the unwinding speed is automatically set high and the command voltage of the tensioning device 13 is increased. By lowering it, the yarn can be wound at high speed without changing the tension of the yarn. As a result, the unwinding speed (winding speed) can be increased without causing fluctuations in the unwinding tension. According to this "optimal speed control", yarn breakage is reduced and productivity is improved.

Further, in the "package density priority setting", for example, it is possible to set the optimal setting for the user who uses the winder unit 10 for dye winding. By making it possible to grasp the indicated voltage of the tensioning device 13 for each package diameter, the unwinding speed can be adjusted to be slowed down at locations (diameters) with high unwinding tension values that cannot be lowered by adjusting the tensioning device 13. can be made As a result, the reel can be wound with substantially the same tension from the beginning to the end of the unwinding operation. For example, depending on the user, in dyeing winding, the density needs to be low so that the package 30 can be easily dyed, and the yarn 20 needs to be wound with the same tension. Such a tension equalization control mode brings advantages to the user.

The display unit 93 of the machine control device 90 may display the indicated voltage of the tensioning device 13 or the tendency of yarn breakage to correspond to the diameter of the yarn feeding package 21 . In the example shown in FIG. 6, changes in the indicated voltage of the tension applying device 13 are displayed in correspondence with the diameter of the yarn supply package 21. In the example shown in FIG. According to such a display (notification), the load applied to the yarn 20 by the tensioning device 13 can be visually grasped, and the user can use it as a reference when determining the setting value of the tensioning device 13. be able to.

In the example shown in FIG. 7, the locations (diameters) where yarn breakage is likely to occur are shown corresponding to the diameters of the yarn supply package 21 . In this example, the tendency for thread breakage, etc., to occur frequently at a position of 180 mm in diameter is displayed, and the tendency for thread breakage, etc., to occur at a position of 140 mm in diameter is shown. As shown in FIG. 7, the numerical values of locations (diameters) where yarn breakage can occur are shown together with the size of circles indicating the frequency of occurrence. Also, a bar graph may be shown in addition to the circle graph. Both the pie chart and bar chart may be displayed together or as separate charts.

By the above control, collected data is stored in the machine control device 90, and it is possible to check changes in the package diameter and indicated voltage and yarn breakage trends at any point (diameter) for each weight or platform. The tension applied to the yarn by the tension applying device 13 can be grasped according to the diameter of the yarn supply package 21 . For example, reference data is provided for the user to determine the tension setting value. In addition, the relationship between the diameter of the yarn supply package 21 and the cause of yarn breakage is provided to the user, and all kinds of control settings (for example, lot setting, etc.) in yarn winding are possible. A plurality of types of settings such as "optimal speed control settings" and "package density priority settings" can be prepared as lot settings.

The sensor moving device 60 moves the optical sensor 45 in a moving direction D2 perpendicular to the running direction D1 of the yarn 20 . The diameter of the yarn supply package 21 changes in the direction perpendicular to the running direction D1 of the yarn 20 . Therefore, by moving the optical sensor 45 by the sensor moving device 60 , the optical sensor 45 can easily follow changes in the diameter of the yarn feeding package 21 .

The drive motor 61 is a stepping motor. Therefore, the position of the optical sensor 45 can be reliably controlled with a simpler configuration.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, the optical sensor 45 is not limited to being arranged so as to face the outer peripheral surface of the yarn supplying package 21, and may be arranged so as to face the end surface on the large diameter side or the end surface on the small diameter side of the yarn supplying package 21. good too.

The sensor moving device is not limited to the aspect (ball screw structure) illustrated in FIG. For example, an electric cylinder mechanism, an air cylinder mechanism, or a solenoid mechanism may be used as the sensor moving device. In these cases, an optical sensor 45 is attached to the tip of the electric cylinder, air cylinder, or solenoid. Alternatively, a crank-slider mechanism that converts the rotary motion of the crank into reciprocating linear motion of the slider may be employed, and the optical sensor 45 may be attached to the tip of the slider. Alternatively, a traverse mechanism using a belt (belt traverse mechanism) may be employed, or a roller conveyor mechanism using a motor roller may be employed. Alternatively, the optical sensor 45 may be mounted on the linear guide and moved by spraying fluid such as compressed air or water. A vibrating mechanism such as a parts feeder may be provided to move the optical sensor 45 using vibration.

The storage unit is not limited to storing the relationship between the diameter of the yarn supply package acquired by the package diameter acquiring unit, the indicated voltage in the tension applying device, and the yarn breakage operator. The storage unit may store the relationship between the diameter of the yarn supply package acquired by the package diameter acquiring unit and another index relating to winding of the yarn in the yarn winding machine. For example, other indicators include ribbon diameter or unwinding speed.

In the unit control section 50, the sensor drive control section 59 may be omitted. In sensor movement device 60, optical sensor 45 may move according to a predetermined movement schedule. In this case, the movement schedule is, for example, the radial position of the optical sensor according to the elapsed time after the start of winding. Alternatively, the moving speed in the radial direction of the optical sensor 45 may be set constant or variable according to the elapsed time after the start of winding.

Various modes may be employed in addition to the control modes described above. For example, a mode of manually setting the speed may be employed. Assuming that there are many yarn breakages at the position of 130 mm, if the position of the package diameter at which the unwinding speed is to be reduced is manually input to the machine controller 90, for example, 130 mm, the unwinding speed of the yarn layer of about 130±several mm can be adjusted. It may be set so that it can be dropped.

Further, the "contact pressure setting mode" may be configured so that the package contact pressure can be set according to the unwound yarn length (the current diameter of the yarn supply package 21). As a result, the optimum contact pressure can be ensured without actually measuring the diameter of the yarn supplying package 21 .

The present invention may be applied to a type of yarn winding machine different from the above embodiment. For example, it is not limited to the case where the yarn supply package is manually installed at the lower end of the device, but the yarn supply package to be unwound is installed at one end of the swing arm having a horizontal axis of rotation, and the other end of the swing arm is installed next. The present invention may be applied to a type of yarn winding machine in which a yarn supply package to be unwound is installed. By rotating the swing arm, the next yarn supply package is set at a predetermined unwinding position. Also, the present invention may be applied to a simple yarn winding machine in which a splicer is omitted.

REFERENCE SIGNS LIST 1 Automatic winder 10 Winder unit (yarn winding machine) 13 Tensioning device 20 Yarn 21 Yarn supply package 30 Package (winding package) 52 Package drive control unit (winding speed Control unit), 53 Package diameter acquisition unit 55 Factor estimation unit 57 Storage unit 59 Sensor drive control unit 60 Sensor movement device 61 Drive motor (drive source) D1 Travel direction D2 …Direction of movement.

Claims (8)

A yarn winding machine that unwinds a yarn from a yarn supply package and winds it on a winding package,
an optical sensor arranged to the side of the yarn supplying package for detecting the yarn layer of the yarn supplying package;
and a sensor moving device having a drive source for moving the optical sensor in a predetermined moving direction. The yarn winding machine according to claim 1, further comprising a sensor drive control section that controls the drive source of the sensor moving device based on the detection information of the yarn layer by the optical sensor. a package diameter acquisition unit that acquires the diameter of the yarn supply package based on the detection information of the yarn layer by the optical sensor;
3. The storage unit according to claim 1, further comprising a storage unit that stores a relationship between the diameter of the yarn supply package acquired by the package diameter acquiring unit and an index relating to winding of the yarn in the yarn winding machine. yarn winding machine. further comprising an instruction voltage acquisition unit that acquires an instruction voltage as the index in the tension applying device that applies tension to the yarn,
4. The storage unit according to claim 3, wherein the storage unit stores the relationship between the diameter of the yarn feeding package acquired by the package diameter acquisition unit and the instruction voltage in the tension applying device acquired by the instruction voltage acquisition unit. Yarn winding machine described. further comprising a factor estimating unit for estimating a thread breakage factor of the thread as the index,
5. The storage unit according to claim 3, wherein the storage unit stores the relationship between the diameter of the yarn supply package acquired by the package diameter acquisition unit and the yarn breakage factor of the yarn estimated by the factor estimation unit. Yarn winding machine described. a package diameter acquisition unit that acquires the diameter of the yarn supply package based on the detection information of the yarn layer by the optical sensor;
The winding speed control unit that controls the winding speed of the yarn based on the diameter of the yarn package obtained by the package diameter obtaining unit, according to any one of claims 1 to 5. yarn winding machine. The yarn winding machine according to any one of claims 1 to 6, wherein the sensor moving device moves the optical sensor in the movement direction perpendicular to the running direction of the yarn. The yarn winding machine according to any one of claims 1 to 7, wherein the drive source is a stepping motor.

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