JP2012025508A - Yarn winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winding device that prevents the winding density further inside from the package end from being increased above the desired winding density when executing creeping control.SOLUTION: The yarn winding device includes: a twill-angle setting part 44; a traverse-width setting part 45; a creeping pattern setting part 46; an average-width calculating part 47; and a creeping-control part. The average-width calculating part 47 calculates an average traverse width of a traverse guide 17 on the basis of a set traverse width set by the traverse-width setting part 45 and a creeping pattern set by the creeping pattern setting part 46. The creeping-control part controls driving of at least either one of a bobbin rotationally-driving part 18 and a traverse driving part 19 such that a cross winding angle of a yarn Y at the average traverse width calculated by the average-width calculating part 47 may serve as a basic twill angle WA1, and the traverse guide 17 follows the creeping pattern set by the creeping pattern setting part 46.

Description

  The present invention relates to a yarn winding device that winds a yarn around a winding bobbin.

  Conventionally, in a yarn winding device that winds a yarn around a winding bobbin while traversing (traversing) the yarn, the traverse width changes pulsatingly as the winding of the yarn proceeds to prevent the height of the package end. Creeping control is performed. For example, Patent Document 1 discloses a yarn winding device that accurately controls the package shape and the density of the yarn layer by controlling the traverse width in accordance with the degree of progress of winding the yarn onto the winding bobbin. Yes.

  On the other hand, a yarn winding device that generates a package while avoiding ribbon winding by step precision control is also known. Step precision control is the following winding method. That is, the number of winds is kept constant while keeping the angle at which the yarn is wound around the winding bobbin within a certain range close to a predetermined angle (basic angle). When the number of winds approaches the number of dangerous winds (the number of winds in which ribbon winding occurs), the winding angle is suddenly changed (traverse jump) from a state where the number of winds is constant so that the number of winds does not become the number of dangerous winds. After that, the wind number is returned to a constant state. Step precision control is a winding method that repeats this series of controls. In the present specification, the “basic traverse angle” means an overall traverse angle in one traverse stroke, not an instantaneous traverse angle.

  A yarn winding device that generates a package by combining step precision control and creeping control is also known. In this yarn winding device, during creeping control, the traverse width is reduced and the traverse angle is reduced, so that the number of winds is kept constant before and after the change of the traverse width. As a result, ribbon winding is avoided while suppressing the ear height of the package end.

  However, when performing step precision control and creeping control simultaneously, for example, the basic traverse angle in step precision control is set to 14 degrees, and this basic traverse angle (14 degrees) is traversed with the maximum traverse width. It is assumed that the yarn winding speed, traverse speed, etc. are set so as to be a traverse angle. If the traverse width is reduced by creeping control under this setting, it is necessary to reduce the traverse angle in order to keep the wind number constant. For this reason, the twill angle during creeping control is smaller than the basic twill angle (for example, 13 degrees). As a result, there is a problem that the winding density inside the package end portion is increased, and the winding density of the package becomes higher than a desired winding density. In particular, when soft winding suitable for dyeing is required (winding density is low and uniform winding), a package having a winding density higher than the desired winding density is a defective package.

  When step precision control and creeping control are performed simultaneously as described above, if the basic traverse angle of step precision control is set to a slightly larger angle (for example, 15 degrees) than the desired traverse angle, When the traverse width is decreased, the twill angle is also slightly increased, and it is possible to prevent the winding density from being increased. However, the operator must perform special basic traverse angle setting work in consideration of creeping control. This setting operation requires an operator's work. Further, due to an operator's setting error, the generated package may not have the desired traverse angle.

JP 2007-230708 A

  The present invention has been made in order to solve the above-described problem, and even when creeping control is performed, a bobbin for preventing the winding density inside the package end from rising higher than a desired winding density. The purpose is to provide a take-off device.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, the first invention includes a traverse guide, a traverse drive unit, a bobbin rotation drive unit, a traverse angle setting unit, a traverse width setting unit, a creeping pattern setting unit, an average width calculation unit, a creeping A control unit. The traverse guide engages with the yarn wound around the winding bobbin and traverses the yarn. The traverse driving unit drives the traverse guide. The bobbin rotation drive unit rotationally drives the winding bobbin. The twill angle setting unit sets a basic twill angle of the yarn wound around the winding bobbin. The traverse width setting unit sets the traverse width of the traverse guide as a set traverse width according to the winding width of the winding bobbin. The creeping pattern setting unit sets a creeping pattern that temporarily decreases the traverse width of the traverse guide with the progress of winding of the yarn with respect to the set traverse width set by the traverse width setting unit. The average width calculation unit calculates an average traverse width of the traverse guide based on the set traverse width set by the traverse width setting unit and the creeping pattern set by the creeping pattern setting unit. In the creeping control unit, the traverse guide is set in the creeping pattern setting unit so that the traverse angle of the yarn becomes the basic traverse angle in the average traverse width calculated in the average width calculation unit. The driving of at least one of the bobbin rotation driving unit and the traverse driving unit is controlled so as to follow the creeping pattern.

  2nd invention is the yarn winding device of 1st invention, Comprising: When the said creeping control part reduces the traverse width of the said traverse guide temporarily according to the said creeping pattern, in the said average traverse width The driving of the traverse driving unit is controlled so that the traverse speed of the traverse guide is smaller than the traverse speed of the traverse guide in the set traverse width.

  3rd invention is the yarn winding device of 1st invention, Comprising: When the said creeping control part reduces the traverse width of the said traverse guide temporarily according to the said creeping pattern, in the said average traverse width The drive of the bobbin rotation drive unit is controlled so that the peripheral speed of the winding bobbin is larger than the peripheral speed of the winding bobbin in the set traverse width.

  4th invention is the yarn winding device of 1st invention, Comprising: When the said creeping control part reduces the traverse width of the said traverse guide temporarily according to the said creeping pattern, the said winding bobbin Driving of the traverse driving unit and the bobbin rotation driving unit is controlled so that the traveling speed of the wound yarn is the same as the traveling speed of the yarn before the traverse width of the traverse guide is reduced.

  A fifth invention is the yarn winding device according to any one of the first to fourth inventions, and controls the drive of at least one of the traverse drive unit and the bobbin rotation drive unit so as to perform step precision control. And a step precision control unit.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the invention, the creeping control unit causes the traverse guide to be the basic traverse angle in the average traverse width calculated by the average width calculation unit, and the traverse guide is the creeping pattern setting unit. The driving of at least one of the bobbin rotation driving unit and the traverse driving unit is controlled so as to follow the set creeping pattern. Thereby, the difference between the traverse angle when traversing in a state where the traverse width is reduced by creeping control and the basic traverse angle set by the traverse angle setting unit is reduced. Since the winding density of the package is not increased while the edge of the package is softened by creeping control, the winding density of the edge of the package and the inner part of the edge is desired regardless of whether creeping control is performed or not. A package having a winding density of can be generated. In addition, when creeping control is performed, a special basic traverse angle setting operation by the operator is not necessary, and setting operation errors and the like can be avoided.

  Further, since the package is sequentially wound by the basic traverse angle set before the start of winding of the package, a sudden traverse angle against the operator's intention does not occur during the winding of the package. When a sudden change in the twill angle is made against the operator's intention during the winding of the package, the change in the twill angle may affect the shape of the package end face. However, in the present invention, since the package is wound by the basic traverse angle set before the start of winding of the package, the shape of the end face of the package is hardly deteriorated due to the variation of the traverse angle. In addition, since the basic traverse angle is set before winding of the package, even in the case of a cone winding package where the winding density changes every moment depending on the traverse position and the package diameter, an increase in the winding density in the center area of the package is suppressed. Can be wound up.

  According to the second aspect of the present invention, when the traverse width of the traverse guide is temporarily reduced according to the creeping pattern, the traverse speed of the traverse guide at the average traverse width is smaller than the traverse speed of the traverse guide at the set traverse width. The driving of the traverse driving unit is controlled. For this reason, even when creeping control is performed, it is not necessary to adjust the peripheral speed of the winding bobbin, and the productivity of the yarn winding device does not decrease. Therefore, it is possible to generate a package having a desired winding density while improving the productivity of the yarn winding device.

  According to the third invention, when the traverse width of the traverse guide is temporarily reduced according to the creeping pattern, the peripheral speed of the winding bobbin at the average traverse width is higher than the peripheral speed of the winding bobbin at the set traverse width. Thus, the drive of the bobbin rotation drive unit is controlled. For this reason, in a situation where the traverse speed of the traverse guide cannot be increased, even if creeping control is performed by increasing the peripheral speed of the take-up bobbin, the yarn take-up device can package a package with a desired take-up density. Can be generated.

  According to the fourth aspect of the present invention, when the traverse width of the traverse guide is temporarily reduced according to the creeping pattern, the traveling speed of the yarn wound around the winding bobbin is the yarn before the traverse width of the traverse guide is reduced. The driving of the traverse drive unit and the bobbin rotation drive unit is controlled so as to be the same as the traveling speed of. Thereby, it is possible to generate a package having a desired winding density while maintaining the productivity of the package of the yarn winding device.

  According to the fifth aspect of the present invention, the yarn winding device further includes a step precision control unit that controls driving of at least one of the traverse driving unit and the bobbin rotation driving unit so as to perform step precision control. For this reason, by combining step precision control and creeping control, it is possible to generate a package having a desired winding density while avoiding ribbon winding.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified front view and block diagram illustrating a yarn winding device 11 according to a first embodiment of the invention. The graph which shows an example of the content of creeping control. 3 is a flowchart of creeping control according to the first embodiment. The graph which shows an example of the content of step precision control. The figure which shows the relationship between the traverse speed which concerns on Example 1, and the circumferential speed of the winding bobbin B. FIG. The figure which shows the relationship between the traverse speed which concerns on Example 2, and the circumferential speed of the winding bobbin B. FIG. The figure which shows the relationship between the traverse speed which concerns on Example 3, and the circumferential speed of the winding bobbin B. FIG.

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

  A yarn winding device 11 according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 5.

  The yarn winding device 11 of the present embodiment generates a package 53 by combining step precision control and creeping control. As shown in FIG. 1, the yarn winding device 11 forms a yarn layer by winding the yarn Y of the yarn supplying bobbin 51 around the winding tube 52 while traversing (traversing) the yarn Y on the traverse device 12, thereby forming a cone-shaped package. 53 is generated. In addition, although there is one yarn winding device 11 shown in FIG. 1, an automatic winder is configured by arranging a plurality of such yarn winding devices 11 in a row.

  In this specification, the winding tube 52 and the package 53 are collectively referred to as a winding bobbin B. That is, the winding bobbin B in which the yarn layer is not formed is the winding tube 52, and the winding bobbin B in which the yarn layer is formed is the package 53. Moreover, although the present Example demonstrates the production | generation of the cone-shaped package 53, the shape of the package 53 is not limited to cone shape, A cheese shape and another shape may be sufficient.

  First, an outline of the yarn winding device 11 will be described. As shown in FIG. 1, the yarn winding device 11 includes a cradle 13 that removably supports the winding bobbin B, and a contact roller 14 that is in contact with the peripheral surface of the winding bobbin B and can be driven to rotate. . The cradle 13 is configured to be swingable about a swing shaft 15 and rotatably supports both ends of the take-up bobbin B. When the yarn Y is wound around the winding bobbin B and the diameter of the winding bobbin B increases, the cradle 13 swings, thereby maintaining an appropriate contact between the peripheral surface of the winding bobbin B and the contact roller 14. Be drunk.

  The cradle 13 is provided with a take-up bobbin drive motor 18 as a bobbin rotation drive unit. The drive shaft of the take-up bobbin drive motor 18 is connected to the take-up bobbin B so as not to rotate relative to the take-up bobbin B when the take-up bobbin B is gripped by the cradle 13 (so-called direct drive system). The winding bobbin B is actively driven to wind the yarn Y.

  Further, the cradle 13 is provided with a winding bobbin rotational speed sensor 32 and a winding bobbin diameter sensor 33. The take-up bobbin rotational speed sensor 32 detects the rotational speed (the number of revolutions) of the take-up bobbin B. The winding bobbin diameter sensor 33 detects the diameter of the winding bobbin B. The winding bobbin diameter sensor 33 is composed of a rotary encoder or the like, and detects the diameter of the winding bobbin B by detecting the swing angle of the cradle 13.

  A traverse device 12 is provided in the vicinity of the contact roller 14. The yarn Y is wound around the winding bobbin B while being traversed by the traverse device 12. The traverse device 12 engages with the yarn Y to traverse the yarn Y, and a traverse guide drive as a traverse drive unit that reciprocates the traverse guide 17 in the winding width direction of the winding bobbin b. And a motor 19. The traverse guide 17 is provided at the tip of an arm member 16 configured to be swingable. The traverse guide 17 is reciprocated by causing the arm member 16 to reciprocate as indicated by the arrow in FIG. In this embodiment, a servo motor is used as the traverse guide drive motor 19, but a voice coil motor, a step motor, or the like may be used.

  The traverse device 12 includes a traverse guide position sensor (not shown). The traverse guide 17 is attached to the rotating shaft (rotor) of the traverse guide drive motor 19 via the arm member 16. Therefore, the rotational position of the rotor and the position of the traverse guide 17 correspond to each other. The traverse guide position sensor indirectly detects the position of the traverse guide 17 by detecting the rotational position of the rotor of the traverse guide drive motor 19.

  In the yarn traveling path between the yarn feeding bobbin 51 and the contact roller 14, a tension applying device 20, a yarn joining device 21, and a yarn clearer 22 are provided in this order from the yarn feeding bobbin 51 side. The tension applying device 20 applies an appropriate tension to the yarn Y. The yarn clearer 22 detects the thickness of the yarn Y passing through the detection portion by a sensor and analyzes the signal from the sensor by the analyzer 23 to detect a yarn defect such as a slab. The yarn clearer 22 is provided with a cutter for cutting the yarn Y immediately when a yarn defect is detected. When the yarn clearer 22 detects a yarn defect and cuts the yarn Y or when the yarn Y from the yarn supplying bobbin 51 is broken, the yarn joining device 21 detects the lower yarn on the yarn supplying bobbin 51 and the yarn on the winding bobbin B side. Join the upper thread.

  On the lower side and upper side of the yarn joining device 21, the lower yarn catching guide portion 24 for sucking and catching the lower yarn on the yarn feeding bobbin 51 and guiding it to the yarn joining device 21, and the upper yarn on the winding bobbin B side are sucked Upper thread catching guide portions 27 for catching and guiding the yarn joining device 21 are provided. The lower thread catching guide portion 24 is configured in a pipe shape, and is provided so as to be rotatable up and down around a shaft 25. A suction port 26 is provided on the front end side of the lower thread catching guide portion 24. The upper thread catching guide portion 27 is also formed in a pipe shape, and is provided so as to be rotatable up and down around a shaft 28. A mouse 29 is provided on the distal end side of the upper thread catching guide portion 27. A negative pressure source is connected to the lower thread catching guide portion 24 and the upper thread catching guide portion 27, and causes the suction port 26 and the mouse 29 to suck.

  Next, a configuration for controlling the operation of the yarn winding device 11 will be described. In the present embodiment, as shown in FIG. 1, the winding bobbin driving motor 18 that drives the winding bobbin B and the traverse guide driving motor 19 that drives the traverse guide 17 are provided separately and independently. The winding bobbin B and the traverse guide 17 are driven independently. When the yarn Y is wound around the winding bobbin B, the winding bobbin B and the traverse guide 17 are controlled separately and a combination of step precision control and creeping control is performed.

  The yarn winding device 11 is provided with a unit controller 41 that individually controls the yarn winding device 11. A winding bobbin drive control unit 31 and a traverse control unit 34 are connected to the unit control unit 41. The take-up bobbin drive control unit 31 controls driving and stopping of the take-up bobbin drive motor 18 based on a control signal from the unit control unit 41. The traverse control unit 34 controls driving and stopping of the traverse guide drive motor 19 based on a control signal from the unit control unit 41. The unit control unit 41 is connected to the machine base control unit 42. The machine base control unit 42 controls the plurality of yarn winding devices 11 constituting the automatic winder in an integrated manner.

  The unit control unit 41, the machine base control unit 42, the winding bobbin drive control unit 31, and the traverse control unit 34 include a CPU as a calculation unit, a ROM, a RAM, and the like as a storage unit. The ROM of the winding bobbin drive control unit 31 and the traverse control unit 34 causes hardware such as a CPU provided in the winding bobbin drive control unit 31 and the traverse control unit 34 to operate as a step precision control unit and a creeping control unit. Each control software is stored.

  The rotation speed signal of the winding bobbin B detected by the winding bobbin rotation speed sensor 32 is transmitted to the unit control unit 41, the winding bobbin drive control unit 31, and the traverse control unit 34. The diameter signal of the winding bobbin B detected by the winding bobbin diameter sensor 33 is transmitted to the unit controller 41 and transferred from the unit controller 41 to the winding bobbin drive controller 31 and the traverse controller 34. A position signal of the traverse guide 17 detected by the traverse guide position sensor is transmitted to the traverse control unit 34. The peripheral speed of the winding bobbin B is calculated by the unit controller 41 from the rotation speed signal and the diameter signal of the winding bobbin B.

  The machine control unit 42 includes a winding speed setting unit 43, a traverse angle setting unit 44, a traverse width setting unit 45, a creeping pattern setting unit 46, and an average width calculation unit 47. The winding speed setting unit 43 sets the winding speed of the yarn Y. The traverse angle setting unit 44 sets a basic traverse angle WA1 of the yarn Y wound around the winding bobbin B. The traverse width setting unit 45 sets the traverse width of the traverse guide 17 according to the winding width of the winding bobbin B. The creeping pattern setting unit 46 temporarily reduces the traverse width of the traverse guide 17 with respect to the traverse width set by the traverse width setting unit 45 (creeping operation). Frequency, creeping width, etc.). The average width calculation unit 47 calculates the average traverse width of the traverse guide 17 based on the traverse width set by the traverse width setting unit 45 and the creeping pattern set by the creeping pattern setting unit 46.

  The machine base control unit 42 transmits the setting information and the calculation result to the unit control unit 41 of the yarn winding device 11. The unit control unit 41 transmits the received setting information and calculation result to the take-up bobbin drive control unit 31 and the traverse control unit 34. The winding bobbin drive control unit 31 that has received the setting information and the calculation result drives and stops the winding bobbin driving motor 18 so as to wind the yarn Y at the winding speed set by the winding speed setting unit 43. To control. The traverse control unit 34 has the average traverse width calculated by the average width calculation unit 47 so that the traverse angle of the yarn Y becomes the basic traverse angle WA1 and follows the creeping pattern set by the creeping pattern setting unit 46. It controls the driving and stopping of the traverse guide drive motor 19.

  Next, a description will be given of a combination of step precision control and creeping control in the yarn winding device 11 of the present embodiment.

  First, creeping control will be described. FIG. 2 is a graph showing an example of the content of creeping control. The horizontal axis represents the position of the traverse guide 17, and the vertical axis represents time. The creeping control is set by setting the traverse width (maximum traverse width) of the traverse guide 17 according to the winding width of the winding bobbin B, the creeping pattern (creeping cycle, creeping width, creeping time) and the like. Is done. The traverse control unit 34 controls the traverse guide drive motor 19 to reciprocate the traverse guide 17 so that the maximum traverse width is obtained. Further, the traverse control unit 34 controls the traverse guide drive motor 19 so as to temporarily reduce the traverse width of the traverse guide 17 every creeping cycle.

  Next, a description will be given according to the flowchart of FIG. The operator sets the winding speed of the yarn Y (for example, 1000 m / min) in the winding speed setting unit 43 of the machine base control unit 42 (step S101), and winds around the winding bobbin B in the twill angle setting unit 44. A basic traverse angle WA1 (for example, 14 degrees) of the yarn Y to be taken is set (step S102).

  In step S103, the operator sets the traverse width (for example, 152 mm) of the traverse guide 17 in the traverse width setting unit 45 according to the winding width of the winding bobbin B. Here, the operator may set the traverse width of the traverse guide 17 by directly inputting it. Alternatively, when the operator inputs the winding width of the winding bobbin B to the traverse width setting unit 45, the traverse width setting unit 45 takes into account the traverse delay (response delay of the traverse guide drive motor 19) and the like. The traverse width of the traverse guide 17 corresponding to the winding width may be calculated, and this traverse width may be set as the set traverse width.

  In step S104, the operator temporarily reduces the traverse width of the traverse guide 17 in the creeping pattern setting unit 46 with the progress of winding the yarn Y with respect to the set traverse width set by the traverse width setting unit 45. Set the creeping pattern to be activated. Specifically, the period of creeping operation, the creeping width (for example, 5 mm inward from the traverse end at the maximum traverse width), the creeping time, and the like are set.

  In step S105, the average width calculation unit 47 calculates the average traverse width of the traverse guide 17 based on the set traverse width set by the traverse width setting unit 45 and the creeping pattern set by the creeping pattern setting unit 46. For example, 148.4 mm) is calculated.

  When the setting and calculation from step S101 to step S105 are completed, the machine base control unit 42 transmits the setting information and the calculation result to the unit control unit 41 of the yarn winding device 11. The unit control unit 41 transmits the received setting information and calculation result to the take-up bobbin drive control unit 31 and the traverse control unit 34. The take-up bobbin drive control unit 31 that has received the setting information and the calculation result controls the drive of the take-up bobbin drive motor 18 so that the yarn Y is taken up at the take-up speed set by the take-up speed setting unit 43. . The traverse control unit 34 has the average traverse width calculated by the average width calculation unit 47 so that the traverse angle of the yarn Y becomes the basic traverse angle WA1 and follows the creeping pattern set by the creeping pattern setting unit 46. The driving of the traverse guide drive motor 19 is controlled to start winding the yarn Y (step S106), and creeping control is performed (step S107).

  Next, step precision control performed in combination with creeping control during winding of the yarn Y will be described. As shown in FIG. 3, step precision control is performed together with creeping control during winding of the yarn Y (step S108). FIG. 4 is a graph showing an example of the contents of step precision control. The horizontal axis represents the diameter of the winding bobbin B, and the vertical axis represents the twill angle. The number of winds indicated by a solid line is the number of dangerous winds in which a large ribbon winding is generated, and the number of winds indicated by an alternate long and short dash line is the number of dangerous winds in which a small ribbon winding is generated, although not a large ribbon winding.

  While the winding of the yarn Y continues, the twill angle around which the yarn Y is wound becomes the basic twill angle WA1, and precisely, the twill angle of the yarn Y is within a certain range including the basic twill angle WA1 while changing the twill angle. The traverse control unit 34 controls the drive of the traverse guide drive motor 19 so that the angle is maintained. In this case, the traverse guide 17 is driven at a traverse speed corresponding to the peripheral speed of the winding bobbin B. Specifically, as shown in FIG. 4, while keeping the traverse angle around which the yarn Y is wound within a predetermined range in the vicinity of the basic traverse angle WA <b> 1, the number of dangerous winds forming a small ribbon winding is avoided. The traverse control unit 34 controls the drive of the traverse guide drive motor 19. In this control, the yarn Y is wound while the number of winds is kept constant, and when the number is near the dangerous wind number, the traverse angle is suddenly changed (traverse jump) to avoid the dangerous wind number, and ribbon winding is generated. Pass the thorns that are afraid. When the occurrence of ribbon winding is avoided, the yarn Y is wound again while keeping the number of winds constant.

  FIG. 5 is a diagram showing the relationship between the traverse speed and the circumferential speed of the winding bobbin B in this embodiment, and shows the control relationship between the winding bobbin drive motor 18 and the traverse guide drive motor 19. In FIG. 5, the horizontal axis 5 is the traverse speed, and the vertical axis is the peripheral speed of the winding bobbin B. The coordinates indicated by the tip of the arrow 1 in FIG. 5 indicate the values of the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven with the set traverse width. The length of the arrow 1 indicates the winding speed of the yarn Y.

  The coordinates indicated by the tip of the arrow 2 in FIG. 5 indicate the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven by creeping control with an average traverse width narrower than the set traverse width. The value is shown. An angle formed by the vertical axis 25 and the arrow 2 is a basic twill angle WA1. The length of the arrow 2 indicates the winding speed of the yarn Y. Even in a state where the average traverse width is smaller than the set traverse width by the creeping control, at least the winding bobbin drive motor 18 and the traverse guide drive motor 19 are maintained in step precision control so that the number of winds is kept constant. One is controlled. In this embodiment, the peripheral speed of the winding bobbin B is not changed, and the number of winds is controlled to be constant even when the traverse width is narrower than the set traverse width by decreasing the traverse speed. .

  As shown in FIG. 3, the control combining the step precision control and the creeping control as described above is performed until the package 53 is fully wound (NO in step S109). The winding of Y is finished (YES in step S109).

  The yarn winding device 11 according to the first embodiment described above has the following effects.

  The winding bobbin drive control unit 31 and the traverse control unit 34 constituting the creeping control unit so that the traverse angle of the yarn Y becomes the basic traverse angle WA1 in the average traverse width calculated by the average width calculation unit 47, and The driving of the winding bobbin driving motor 18 or the traverse guide driving motor 19 is controlled so that the traverse guide 17 follows the creeping pattern set by the creeping pattern setting unit 46. Thereby, the difference between the traverse angle when traversing with the traverse width reduced by creeping control and the basic traverse angle WA1 set by the traverse angle setting unit 44 is reduced. Since the winding density of the package 53 is not increased while the end portion of the package 53 is softened by creeping control, the winding of the end portion of the package 53 and the inner portion of the end portion of the package 53 regardless of whether or not the creeping control is performed. A package 53 having a desired winding density can be generated. Further, when performing creeping control, a special setting operation for the basic traverse angle WA1 by the operator is not required, so that a setting operation error or the like can be avoided.

  The winding bobbin drive motor 18 or the traverse guide drive motor 19 is driven by the winding bobbin drive control unit 31 and the traverse control unit 34 constituting the step precision control unit so as to combine step precision control and creeping control. I have control. Thereby, the yarn winding device 11 can generate a package 53 having a desired winding density while avoiding ribbon winding.

  Further, when the traverse width of the traverse guide 17 is temporarily reduced according to the creeping pattern, the traverse guide 17 so that the traverse speed of the traverse guide 17 in the average traverse width is smaller than the traverse speed of the traverse guide 17 in the set traverse width. The drive of the drive motor 19 is controlled. For this reason, even when creeping control is performed, it is not necessary to adjust the peripheral speed of the winding bobbin B, and the productivity of the yarn winding device 11 does not decrease. Therefore, the package 53 having a desired winding density can be generated while improving the productivity of the yarn winding device 11.

  Further, since the package 53 is sequentially wound by the basic traverse angle WA1 set before the start of winding of the package 53, a sudden change in the traverse angle not intended by the operator during the winding of the package 53 does not occur. . If the abrupt change of the twill angle against the operator's intention is performed during the winding of the package 53, the change of the twill angle may affect the shape of the end face of the package 53. However, in this embodiment, since the package 53 is wound by the basic traverse angle WA1 set before the winding of the package 53, the shape of the end face of the package 53 is unlikely to deteriorate due to the variation of the traverse angle. Further, since the basic traverse angle WA1 is set before starting the winding of the package 53, even in the case of a cone winding package in which the winding density changes every moment depending on the traverse position and the diameter of the package 53, an increase in the winding density in the central region of the package. The package can be wound while suppressing the above.

  A yarn winding device 11 according to a second embodiment of the present invention will be described with reference to FIG. The yarn winding device 11 according to the present embodiment generates a package 53 by combining step precision control and creeping control. However, the yarn winding device 11 of Example 2 drives the winding bobbin so as to temporarily increase the peripheral speed of the winding bobbin B in a state where the traverse width is narrower than the set traverse width by creeping control. The point which controls the drive of the motor 18 is largely different from the first embodiment. Since other configurations and controls are the same as those in the first embodiment, detailed description thereof is omitted.

  FIG. 6 is a diagram showing the relationship between the traverse speed and the circumferential speed of the winding bobbin B in this embodiment, and shows the control relationship between the winding bobbin drive motor 18 and the traverse guide drive motor 19. In FIG. 6, the horizontal axis is the traverse speed, and the vertical axis is the peripheral speed of the winding bobbin B. The coordinates indicated by the tip of the arrow 1 in FIG. 6 indicate the values of the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven with the set traverse width. The length of the arrow 1 indicates the winding speed of the yarn Y.

  The coordinates indicated by the tip of the arrow 3 in FIG. 6 indicate the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven with an average traverse width narrower than the set traverse width by creeping control. The value is shown. An angle formed by the vertical axis 25 and the arrow 3 is a basic twill angle WA1. The length of the arrow 3 indicates the winding speed of the yarn Y. Even in a state where the average traverse width is smaller than the set traverse width by the creeping control, at least the winding bobbin drive motor 18 and the traverse guide drive motor 19 are maintained in step precision control so that the number of winds is kept constant. One is controlled. In this embodiment, by increasing the peripheral speed of the take-up bobbin B so that the traverse speed is not changed, the number of winds is kept constant even when the traverse width is narrower than the set traverse width. Be controlled.

  The yarn winding device 11 according to the second embodiment described above has the following effects.

  When the traverse width of the traverse guide 17 is temporarily reduced according to the creeping pattern, the take-up bobbin so that the peripheral speed of the take-up bobbin B in the average traverse width is larger than the peripheral speed of the take-up bobbin in the set traverse width. The drive of the drive motor 18 is controlled by the winding bobbin drive control unit 31. For this reason, even when creeping control is performed by increasing the peripheral speed of the winding bobbin B in a situation where the traverse speed of the traverse guide 17 cannot be increased, the yarn winding device 11 has a desired winding density. The package can be generated.

  A yarn winding device 11 according to Embodiment 3 of the present invention will be described with reference to FIG. In the yarn winding device 11 according to the present embodiment, the traveling speed of the yarn Y wound around the winding bobbin B is such that the traverse of the traverse guide 17 in a state where the traverse width is narrower than the set traverse width by creeping control. The circumferential speed of the winding bobbin B and the traverse speed of the traverse guide 17 are controlled so as to be the same as the traveling speed of the yarn Y before the width is reduced. Since the other configuration and control of the yarn winding device 11 of the third embodiment are the same as those of the first embodiment, detailed description thereof is omitted.

  FIG. 7 is a diagram showing the relationship between the traverse speed and the peripheral speed of the winding bobbin B in this embodiment, and shows the control relationship between the winding bobbin drive motor 18 and the traverse guide drive motor 19. In FIG. 7, the horizontal axis is the traverse speed, and the vertical axis is the peripheral speed of the winding bobbin B. The coordinates indicated by the tip of the arrow 1 in FIG. 7 indicate the values of the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven with the set traverse width. The length of the arrow 1 indicates the winding speed of the yarn Y.

  The coordinates indicated by the tip of the arrow 4 in FIG. 7 indicate the traverse speed and the peripheral speed of the winding bobbin B when the traverse guide 17 is reciprocatingly driven with an average traverse width smaller than the set traverse width by creeping control. The value is shown. An angle formed by the vertical axis 25 and the arrow 4 is a basic twill angle WA1. Even when the average traverse width is narrower than the set traverse width by creeping control, the traveling speed of the yarn Y wound around the winding bobbin B is reduced before the traverse width of the traverse guide 17 is reduced. The winding bobbin drive motor 18 and the traverse guide drive motor 19 are controlled so as to be equal to the traveling speed of the yarn Y. The length of the arrow 4 indicates the winding speed of the yarn Y. The length of the arrow 1 and the length of the arrow 4 are equal, and the absolute value of the winding speed of the yarn Y is equal.

  The yarn winding device 11 according to the third embodiment described above has the following effects.

  When the traverse width of the traverse guide 17 is temporarily reduced according to the creeping pattern, the travel speed of the yarn Y wound around the winding bobbin B is the travel speed of the yarn Y before the traverse width of the traverse guide 17 is decreased. The driving of the take-up bobbin drive motor 18 and the traverse guide drive motor 19 is controlled so as to be the same. Thereby, the package 53 having a desired winding density can be generated while maintaining the productivity of the package 53 of the yarn winding device 11.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, in the first, second, and third embodiments, control combined with step precision control and creeping control is performed, but precision winding or random winding (with constant winding speed and constant traverse speed, winding bobbin B A winding method other than step precision control, such as a winding method in which the number of winds changes with a change in the diameter, and creeping control may be combined. Alternatively, the yarn winding device 11 may perform only creeping control.

  The configuration for controlling the operation of the yarn winding device 11 is not limited to the embodiment. For example, the winding bobbin drive control unit 31 and the traverse control unit 34 are provided in the unit control unit 41, or the machine base control unit. The average width calculation unit 47 provided in 42 may be provided in the take-up bobbin drive control unit 31 and the traverse control unit 34. Further, the unit control unit 41 may include the winding speed setting unit 43, the twill angle setting unit 44, the traverse width setting unit 45, the creeping pattern setting unit 46, and the average width calculation unit 47 provided in the machine base control unit 42. Good.

  Although the winding bobbin B is driven directly by the winding bobbin driving motor 18, the winding bobbin B may be driven by bringing a driving roller into contact with the surface of the winding bobbin B. The shape of the contact roller 14 is a cone shape having different diameters at both ends, but may be a cylindrical shape having the same diameter at both ends.

  The traverse device 12 is configured such that the longitudinal direction of the arm member 16 is parallel to the installation direction (vertical direction) of the yarn winding device 11, but the longitudinal direction of the arm member 16 is on the installation surface of the yarn winding device 11. It may be configured to be perpendicular to the surface. The traverse device 12 is configured to reciprocate the arm member 16 by the traverse guide drive motor 19, but an endless timing belt 31 is disposed in the vicinity of the contact roller 14, and the traverse guide 17 is attached to the timing belt 31. The timing belt 31 may be reciprocally driven by a pulse motor, for example, while being attached.

  The technical scope of the present invention described above is not limited to the above embodiment, and is not limited to the shape of the above embodiment. The technical scope of the present invention broadly covers the entire scope of technical ideas that the present invention truly intends, as will be apparent from the matters described in the present specification and drawings.

DESCRIPTION OF SYMBOLS 11 Thread winding device 12 Traverse device 13 Cradle 14 Contact roller 15 Oscillating shaft 16 Arm member 17 Traverse guide 18 Winding bobbin drive motor 19 Traverse guide drive motor 20 Tension applying device 21 Yarn splicer 22 Yarn clearer 23 Analyzer 24 Lower thread capture Guide unit 25 shaft 26 suction port 27 upper thread catching guide unit 28 shaft 29 mouse 31 winding bobbin drive control unit 32 winding bobbin rotational speed sensor 33 winding bobbin diameter sensor 34 traverse control unit 35 traverse guide position sensor 41 unit control unit 42 Machine Control Unit 43 Winding Speed Setting Unit 44 Cross Angle Setting Unit 45 Traverse Width Setting Unit 46 Creeping Pattern Setting Unit 47 Average Width Calculation Unit 51 Yarn Supply Bobbin 52 Winding Tube 53 Package B Winding Bobbin Y Yarn

Claims (5)

A traverse guide that traverses the yarn by engaging with the yarn wound on the winding bobbin;
A traverse drive unit for driving the traverse guide;
A bobbin rotation driving unit that rotationally drives the winding bobbin;
A twill angle setting unit for setting a basic twill angle of the yarn wound on the winding bobbin;
A traverse width setting unit that sets the traverse width of the traverse guide as a set traverse width according to the winding width of the winding bobbin;
A creeping pattern setting unit that sets a creeping pattern that temporarily decreases the traverse width of the traverse guide with the progress of winding of the yarn with respect to the set traverse width set by the traverse width setting unit;
An average width calculation unit that calculates an average traverse width of the traverse guide based on the set traverse width set by the traverse width setting unit and the creeping pattern set by the creeping pattern setting unit;
In the average traverse width calculated by the average width calculation unit, the traverse angle of the yarn becomes the basic traverse angle, and the traverse guide follows the creeping pattern set by the creeping pattern setting unit. A creeping control unit that controls driving of at least one of the bobbin rotation driving unit and the traverse driving unit;
A yarn winding device comprising: The yarn winding device according to claim 1,
When the creeping control unit temporarily decreases the traverse width of the traverse guide according to the creeping pattern, the traverse speed of the traverse guide at the average traverse width is the traverse speed of the traverse guide at the set traverse width. The yarn winding device, wherein the driving of the traverse driving unit is controlled so as to decrease more than the above. The yarn winding device according to claim 1,
When the creeping control unit temporarily decreases the traverse width of the traverse guide according to the creeping pattern, the peripheral speed of the winding bobbin at the average traverse width is set to be equal to the winding bobbin at the set traverse width. A yarn winding device that controls the drive of the bobbin rotation drive unit so as to increase more than the peripheral speed. The yarn winding device according to claim 1,
When the creeping control unit temporarily reduces the traverse width of the traverse guide according to the creeping pattern, the traveling speed of the yarn wound around the winding bobbin decreases the traverse width of the traverse guide. A yarn winding device that controls driving of the traverse driving unit and the bobbin rotation driving unit so as to be equal to the traveling speed of the previous yarn.   5. The yarn winding device according to claim 1, wherein step precision control is performed to control driving of at least one of the traverse drive unit and the bobbin rotation drive unit so as to perform step precision control. A yarn winding device further comprising a section.

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