JP2009227414A - Yarn winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn winder capable of efficiently forming a high quality package. <P>SOLUTION: An automatic winder rotationally drives a winding bobbin 22 around which a yarn 20 is wrapped by a package drive motor 41, and forms a package 30 by traversing the yarn 20 by a traverse guide 11. The traverse guide 11 is driven by a traverse guide drive motor 45 so as to reciprocate. A control origin used as a reference for the reciprocating driving is determined by an origin calculation part 61 and stored in an origin storage part 62. A motor control part 66 controls the traverse guide drive motor 45 by continuously applying the control origin determined by the origin calculation part 61 and stored in the origin storage part 62 before the yarn is wrapped around the package 30 from the start to the end of the winding of the package 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a yarn winding machine that winds a yarn around a winding bobbin while traversing the yarn with a traverse yarn guide.

This type of yarn winding machine is disclosed in Patent Document 1, for example. The winding device disclosed in Patent Document 1 includes a traverse device, and the traverse device is configured to calculate the origin coordinates of the traverse range. Specifically, the traverse guide is brought into contact with a movement restricting member provided at a position outside both ends of the traverse range, and the both movement restricting members are detected from an encoder value for detecting the position of the traverse guide at the time of contact. The origin is calculated by calculating the center position between them.
JP 2004-189359 A

  Ideally, the origin calculated in Patent Document 1 is always at the same position, but in reality, the origin position calculated based on the hardness and shape of the movement restricting member, the force with which the traverse guide hits the movement restricting member, and the like. May be different. Therefore, if the origin is calculated while the yarn is being wound around the package (for example, during the yarn joining operation by the yarn joining device) and the winding is resumed based on the new origin, a step difference is formed on the end surface of the package due to the deviation of the winding position. There is a risk that winding will not be able to be continued due to the formation of crushing or the cause of traversing. As a result, defective packages are generated and productivity is reduced. Further, if the origin calculation operation is performed while winding the yarn on the package, the time for which the winding has to be interrupted becomes longer, and in this sense, the productivity is lowered.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a yarn winding machine that can efficiently form a higher quality package.

Means and effects for solving the problems

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

  According to a first aspect of the present invention, a yarn winding machine having the following configuration is provided. That is, the yarn winding machine includes a winding bobbin driving device, a traversing yarn guide, a traversing yarn guide driving device, a reference position determining unit, a reference position storage unit, and a control unit. The winding bobbin driving device rotationally drives a winding bobbin in which a yarn is wound to form a package. The traverse yarn guide engages with the yarn and traverses the yarn. The traverse yarn guide driving device reciprocates the traverse yarn guide. The reference position determining unit determines a reference position serving as a reference for driving the traverse yarn guide. The reference position storage unit stores the reference position determined by the reference position determination unit. The control unit continuously applies the reference position determined by the reference position determination unit and stored in the reference position storage unit before starting to wind the yarn around the package from the beginning to the end of winding of the package. The traverse yarn guide driving device is controlled.

  With this configuration, the reference position of the traverse yarn guide can be prevented from being changed during winding of one package. Therefore, since the control position of the traverse yarn guide is constant, it is possible to prevent the quality of the package from deteriorating, such as stepping. Further, since the winding interruption time can be shortened by reducing the number of operations necessary for determining the reference position, it is possible to effectively suppress the decrease in the productivity of the package.

  In the yarn winding machine, the control unit is determined by the reference position determination unit and stored in the reference position storage unit before starting to wind the yarn around the first package until formation of a plurality of packages is completed. Preferably, the reference position is continuously applied to control the traverse yarn guide driving device.

  With this configuration, the number of operations required to determine the reference position can be further reduced, and the package production efficiency can be further improved.

  In the yarn winding machine, the control unit determines the reference position determined by the reference position determination unit and stored in the reference position storage unit before starting to wind the yarn around the first package after the power is turned on. It is preferable to control the traverse yarn guide driving device by applying continuously until the formation of a plurality of packages is completed.

  With this configuration, the work of determining the reference position needs to be performed only once immediately after the power is turned on, so that the production efficiency of the package is further improved.

  The yarn winding machine preferably has the following configuration. That is, the yarn winding machine includes a redetermination instruction unit that is operated to cause the reference position determination unit to redetermine the reference position. When the re-determination instruction unit is operated, the reference position determination unit re-determines a reference position, and the reference position storage unit re-stores a new reference position. Thereafter, the controller controls the traverse yarn guide driving device by continuously applying a new reference position until formation of a plurality of packages is completed.

  With this configuration, when resetting of the reference position is particularly necessary, it is possible to perform resetting by operating the redetermining instruction unit, and to drive the traversing yarn guide based on the new reference position. Accordingly, the control origin can be determined flexibly, and both high quality of the package and improvement of productivity can be achieved.

  Next, embodiments of the invention will be described with reference to the drawings. FIG. 1 is a schematic diagram and a block diagram showing a schematic configuration of a winder unit 10 included in the automatic winder according to the present embodiment. FIG. 2 is a perspective view showing how the yarn is traversed in the traverse device 27. FIG. 3 is a front view showing the position of the traverse guide 11 used for the origin finding operation in the traverse device 27.

  A winder unit (yarn winding unit) 10 shown in FIG. 1 winds a yarn 20 unwound from a yarn supplying bobbin 21 around a winding bobbin 22 while traversing it to form a package 30 having a predetermined length and a predetermined shape. .

  The automatic winder (yarn winding machine) of this embodiment includes a machine base and a plurality of winder units 10 arranged side by side on the machine base. The automatic winder includes an unillustrated machine base control device disposed at one end in the direction in which the winder units 10 are arranged in the machine base. A machine power switch 81 is provided at an appropriate position of the machine, so that the power of the machine can be turned on and off.

  Each winder unit 10 includes a winding unit main body 16 and a unit control unit 50.

  The winding unit main body 16 includes a balloon controller 12, a tension applying device 13, and a splicer device (yarn splicing device) in order from the yarn feeding bobbin 21 side in the yarn traveling path between the yarn feeding unit 24 and the contact roller 29. Device) 14 and a clearer 15 are arranged.

  A yarn supplying section 24 for supplying yarn to the winding bobbin 22 side is provided at the lower portion of the winding unit main body 16. The yarn supplying section 24 is configured to hold the yarn supplying bobbin 21 conveyed by a bobbin conveying system (not shown) at a predetermined position. Instead of the configuration in which the yarn feeding bobbin 21 is supplied by the bobbin conveying system, the yarn feeding bobbin 21 may be supplied from a magazine type supply system provided in the winding unit main body 16.

  The balloon controller 12 includes a restricting member 40 that can move up and down. The restricting member 40 is configured to be able to cover the core tube of the yarn supplying bobbin 21 set in the yarn supplying unit 24. The balloon controller 12 assists the unwinding of the yarn from the yarn supplying bobbin 21 by lowering the regulating member 40 in conjunction with the unwinding of the yarn from the yarn supplying bobbin 21. The regulating member 40 contacts a balloon formed on the upper portion of the yarn feeding bobbin 21 by rotation and centrifugal force of the yarn unwound from the yarn feeding bobbin 21, and applies an appropriate tension to the balloon to thereby reduce the yarn. Assist with unraveling. An unillustrated sensor for detecting the chase portion of the yarn feeding bobbin 21 is provided in the vicinity of the restricting member 40. When this sensor detects the descent of the chase portion, the restricting member 40 is followed accordingly. For example, it can be lowered by an air cylinder (not shown).

  The tension applying device 13 applies a predetermined tension to the traveling yarn 20. As the tension applying device 13, for example, a gate-type device in which movable comb teeth 37 are arranged with respect to fixed comb teeth 36 can be used. The movable comb teeth 37 can be rotated by, for example, a solenoid 38 configured in a rotary manner so that the comb teeth are in a meshed state or a released state. The tension applying device 13 can apply a certain tension to the wound yarn 20 to improve the quality of the package 30. In addition to the gate type, for example, a disk type can be adopted as the tension applying device 13.

  The splicer device 14 detects the lower thread on the yarn feeding bobbin 21 and the package 30 side when the clearer 15 detects a yarn defect and performs yarn cutting or when the yarn breakage occurs during unwinding from the yarn feeding bobbin 21. The upper thread is spliced. As a yarn joining device for joining such an upper yarn and a lower yarn, a mechanical device, a device using a fluid such as compressed air, or the like can be used.

  The clearer 15 includes a clearer head 49 in which a sensor (not shown) for detecting the thickness of the yarn 20 is disposed, and an analyzer 52 that processes a yarn thickness signal from the sensor. The clearer 15 is configured to detect a yarn defect such as a slab by monitoring a yarn thickness signal from the sensor. In the vicinity of the clearer head 49, a cutter 39 for cutting the yarn 20 immediately when the clearer 15 detects a yarn defect is provided.

  On the lower side and the upper side of the splicer device 14, the lower yarn guide pipe 25 that catches the lower yarn on the yarn feeding bobbin 21 and guides it to the splicer device 14, and the upper yarn on the package 30 side is caught. And an upper thread guide pipe 26 for guiding the upper thread. Further, the lower thread guide pipe 25 and the upper thread guide pipe 26 are configured to be rotatable about shafts 33 and 35, respectively. A suction port 32 is formed at the tip of the lower thread guide pipe 25, and a suction mouth 34 is provided at the tip of the upper thread guide pipe 26. A blower box as a negative pressure source (not shown) is connected to the lower thread guide pipe 25 and the upper thread guide pipe 26 through appropriate piping. As a result, a suction flow is generated in the suction port 32 and the suction mouth 34 so that the yarn ends of the upper thread and the lower thread can be sucked and captured.

  The winding unit main body 16 includes a cradle 23 that removably supports a winding bobbin (paper tube, core tube) 22, an arm-type traverse device 27 for traversing the yarn 20, and a periphery of the winding bobbin 22. And a contact roller 29 that can be driven and rotated in contact with the surface or the peripheral surface of the package 30.

  The cradle 23 is configured to be rotatable about a rotation shaft 48, and the increase in the yarn layer diameter associated with the winding of the yarn 20 around the winding bobbin 22 can be absorbed by the rotation of the cradle 23. It is configured as follows.

  A package drive motor 41 is attached to a portion of the cradle 23 where the take-up bobbin 22 is mounted. The package drive motor 41 rotates the take-up bobbin 22 to take up the yarn 20. Yes. When the winding bobbin 22 is supported by the cradle 23, the motor shaft of the package driving motor 41 is connected to the winding bobbin 22 so as not to be relatively rotatable (so-called direct drive system). The operation of the package drive motor 41 is controlled by a package drive control unit 42, and the package drive control unit 42 is configured to control operation and stop of the package drive motor 41 in response to an operation signal from the unit control unit 50. is doing.

  A package rotation sensor 43 is attached to the cradle 23. The package rotation sensor 43 rotates the take-up bobbin 22 attached to the cradle 23 (the rotation of the yarn layer 31 formed on the take-up bobbin 22). ) Is detected. The rotation detection signal of the winding bobbin 22 is transmitted from the package rotation sensor 43 to the package drive control unit 42 and the unit control unit 50. Further, the rotation detection signal is input to a traverse control unit 46 described later.

  An angle sensor 44 for detecting the angle (rotation angle) of the cradle 23 is attached to the rotation shaft 48. The angle sensor 44 is composed of, for example, a rotary encoder, and is configured to transmit an angle signal corresponding to the angle of the cradle 23 to the unit controller 50. Since the angle of the cradle 23 changes as the package 30 gets thicker, the diameter of the yarn layer of the package 30 can be detected by detecting the rotation angle of the cradle 23 by the angle sensor 44. The unit controller 50 calculates the diameter of the yarn layer of the package 30 based on the angle signal received from the angle sensor 44. The package yarn layer diameter calculated by the unit controller 50 is transmitted to the package drive controller 42 and the traverse controller 46. The traverse controller 46 can appropriately traverse the yarn by controlling the traverse device 27 according to the calculated package yarn layer diameter.

  The traverse device 27 includes an elongated arm member 28 configured to be rotatable around a support shaft, a hook-shaped traverse guide (traverse yarn guide) 11 formed at the tip of the arm member 28, and an arm member. A traverse guide drive motor (twisted yarn guide drive unit) 45 for driving 28. The traverse guide drive motor 45 is constituted by a servo motor, and is configured to traverse the yarn 20 by causing the arm member 28 to reciprocate as shown by arrows in FIG.

  In this embodiment, as shown in FIG. 1, the package drive motor 41 and the traverse guide drive motor 45 are provided separately, and the winding bobbin 22 and the traverse guide 11 are driven (controlled) separately and independently. It is comprised so that. Thereby, the yarn 20 can be wound around the winding bobbin 22 while flexibly changing and controlling the traversing of the yarn 20.

  Next, a detailed configuration of the traverse device 27 will be described with reference to FIG. The traverse device 27 includes a housing 54, and a housing of a traverse guide drive motor 45 is fixed inside the housing 54. An output shaft 55 of the traverse guide drive motor 45 protrudes outside the housing 54, and a base end portion of the arm member 28 is fixed to a distal end portion of the output shaft 55.

  The casing 54 is attached to an appropriate portion of the winding unit main body 16 through fixing means (not shown). Further, a support arm 56 is attached to the housing 54, and the contact roller 29 is rotatably supported by the support arm 56.

  The traverse device 27 includes stoppers 65 disposed in the vicinity of both ends of the reciprocating rotation stroke of the arm member 28. The two stoppers 65 are formed in a cylindrical shape with an elastic body such as rubber, and are respectively fixed to the casing 54. The stoppers 65 are arranged on both sides of the rotation range of the arm member 28 and are provided so as to be able to contact the side portion of the arm member 28.

  The operation of the traverse guide drive motor 45 is controlled by a traverse control unit 46 shown in FIG. 1, and the traverse control unit 46 controls the operation and stop of the traverse guide drive motor 45 in response to a signal from the unit control unit 50. It is configured as follows.

  The traverse device 27 is provided with a traverse guide position sensor 47 composed of a rotary encoder, detects the turning position of the arm member 28 (and consequently the position of the traverse guide 11), and sends a position signal to the traverse control unit 46. It is configured to be able to send.

  With this configuration, when the arm member 28 tries to rotate beyond the normal stroke range for some reason, such as when the traverse guide drive motor 45 fails, the stopper 65 comes into contact with the arm member 28 and stops it. It is configured to prevent it.

  The stopper 65 serves as a reference member for determining the position (reference position) of the reference point where the traverse guide 11 traverses the yarn 20. That is, in this embodiment, as shown in FIG. 3, the position 11a of the traverse guide when the arm member 28 contacts the stopper 65 on one side and the position 11b of the traverse guide when it contacts the stopper 65 on the other side. Is obtained by the traverse guide position sensor 47, and an intermediate point between the two positions is determined as a traverse reference point 11o.

  In the present embodiment, the traverse guide 11 is driven so as to realize a predetermined traverse stroke TS around the reference point 11o, and the current position of the traverse guide 11 and the like are set using the reference point 11o as a control origin. Various control information is exchanged. Therefore, the determination of the reference point 11o also serves to determine the position of the control origin. In this sense, the determination operation of the reference point 11o may be referred to as “origin search” in the following description.

  The traverse control unit 46 shown in FIG. 1 is configured as a microcomputer and includes a CPU, a ROM, a RAM, and the like. In the traverse control unit 46, an origin calculation unit (reference position determination unit) 61, an origin storage unit (reference position storage unit) 62, and motor control are performed by the control program stored in the hardware and the ROM. Part (control part) 66 is comprised.

  The origin calculation unit 61 determines the control origin (reference point, reference position) of the traverse guide 11 from the detection value of the traverse guide position sensor 47 in a state where the arm member 28 is in contact with each of the two stoppers 65 in the origin finding operation. ). The origin storage unit 62 stores the control origin calculated by the origin calculation unit 61 in an appropriate memory. The motor control unit 66 calculates the target position of the traverse guide 11 based on predetermined parameters and various control information, and transmits the target position to the traverse guide drive motor 45, thereby driving the traverse guide 11 back and forth. In the calculation of the target position of the traverse guide 11 in the motor control unit 66, the position of the control origin stored in the origin storage unit 62 is referred to.

  Next, the unit controller 50 will be described. The unit control unit 50 shown in FIG. 1 is configured as a microcomputer, and includes a CPU, a RAM, a ROM, and an I / O port. A program for controlling each component of the winding unit main body 16 is recorded in the ROM.

  Each component included in the winding unit main body 16 is connected to the I / O port so that control information can be communicated with each other. The machine control device provided in the automatic winder is provided with an origin reset switch (re-decision instruction unit) 75, and when the operator operates the origin reset switch 75, the control origin of the traverse device 27 is controlled. It is configured so that it can be instructed to reset.

  The origin reset switch 75 is electrically connected to the unit controller 50 and configured to transmit an origin reset signal to the unit controller 50. This origin resetting signal is transferred from the unit controller 50 to the traverse controller 46.

  Next, control of the traverse guide 11 in the present embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing the control when the automatic winder of this embodiment is turned on and the yarn 20 is wound up.

  Referring to the flow of FIG. 4, first, the machine base power switch 81 is operated by the operator, and the machine base is powered on (S101). Then, the machine base control device installed in the machine base starts its operation, and this machine base control device controls the power supply to each winder unit 10 from the machine base. As a result, the unit control unit 50, the package drive control unit 42, the traverse control unit 46, etc. start operation.

  As soon as the traverse control unit 46 starts operating, the above-described origin finding operation is performed (S102). Specifically, the traverse control unit 46 drives the traverse guide drive motor 45 to rotate the arm member 28 to one side, and the arm member 28 contacts the stopper 65 and cannot be rotated any more. The position of the traverse guide 11 (position 11a shown in FIG. 3) is acquired by the traverse guide position sensor 47. Next, the traverse control unit 46 rotates the arm member 28 to the other side, and the position (position 11b) of the traverse guide 11 in a state where the arm member 28 is in contact with the stopper 65 on the opposite side is determined as a traverse guide position sensor 47. Get by. The origin calculation unit 61 calculates the position of the point that is the center of the two acquired positions 11a and 11b by the origin calculation unit 61, and determines the position of the obtained point as the control origin (reference point 11o). . The control origin determined in this way is stored in the origin storage unit 62.

  Next, the motor control unit 66 of the traverse control unit 46 drives the traverse guide drive motor 45 to move the traverse guide 11 to the standby position (S103). This standby position is set at a position slightly outside the traverse stroke when the traverse guide 11 traverses the yarn 20 during normal winding.

  In this state, the unit controller 50 waits until it becomes a state where the yarn splicing operation as a previous stage of the winding operation can be started (S104). Here, the state in which the yarn splicing operation can be started means that the yarn feeding bobbin 21 is properly set in the yarn feeding section 24, and there is an abnormality in various devices such as the package drive motor 41 and the traverse guide drive motor 45. Is not occurring.

  If it is determined in S104 that the yarn joining is possible, the unit controller 50 causes the splicer device 14 to perform the yarn joining operation (S105) and waits until the yarn joining operation is completed (S106).

  In this yarn splicing operation, the yarn 20 (upper yarn) on the package 30 side is sucked and captured by the upper yarn guide pipe 26 rotated upward and guided to the splicer device 14. At this time, since the traverse guide 11 has moved to the standby position, when the upper thread is guided to the splicer device 14, the traverse guide 11 is unlikely to get in the way, and a smooth yarn splicing operation is realized. In parallel with the guide of the upper yarn, the yarn 20 (lower yarn) on the yarn supplying bobbin 21 side is captured by the lower yarn guide pipe 25, drawn upward, and guided to the splicer device 14. Then, the splicer device 14 joins the upper thread and the lower thread.

  After the yarn splicing operation is completed as described above, the traverse control unit 46 controls the traverse guide drive motor 45 by the motor control unit 66, and immediately moves the traverse guide 11 to the origin position (S107). Then, the unit controller 50 rotates the package drive motor 41 by the package drive controller 42 and reciprocates the traverse guide drive motor 45 by the traverse controller 46. Thus, the winding operation for winding the yarn 20 around the package 30 while traversing the yarn 20 is performed (S108). In this winding operation, the position of the control origin stored in the origin storage unit 62 is referred to by the motor control unit 66, and the traverse guide drive motor 45 is controlled based on this.

  The unit controller 50 monitors the clearer 15 for yarn breakage during the winding operation (S109). Here, the term “thread break” includes a case where the vicinity of the yarn defect is cut by the cutter 39 as a result of detecting the yarn defect of the yarn 20 by the clearer 15. If it is determined that the yarn breakage has occurred, the unit controller 50 sends a signal to the package drive controller 42 to stop winding the yarn 20 (S110), and the process returns to S103.

  If it is determined in S109 that no yarn breakage has occurred, the unit controller 50 checks whether the package 30 is full (S111). In this process, it is checked whether or not the winding length from the beginning of winding the yarn around the empty winding bobbin 22 has reached a predetermined length. If it is not full, the process returns to S108 to continue the winding operation.

  If it is determined in S111 that the package 30 is full, the unit control unit 50 performs control so that a doffing operation is performed by a known automatic doffing device (not shown) (S112). By this doffing operation, the full package 30 is removed from the cradle 23, and a new empty winding bobbin 22 is mounted on the cradle 23.

  After completion of the doffing operation, the unit controller 50 checks whether the origin reset switch 75 is operated (S113). If the origin reset switch 75 has been operated, the process returns to S102, and the traverse control unit 46 performs the above-described origin setting operation based on the signal from the unit control unit 50. As a result, a new control origin is calculated by the origin calculation unit 61 and re-stored by the origin storage unit 62. If the origin reset switch 75 has not been operated, the origin return operation is not performed. Thereafter, in either case, the processing proceeds to S103 and the subsequent steps, and the splicing operation by the splicer device 14 is performed, and the winding of the yarn 20 onto the new winding bobbin 22 is started.

  With the above flow, the yarn defect is removed by the clearer 15 and the splicer device 14 is spliced to wind the yarn 20 around the empty take-up bobbin 22 to form the package 30. Control to wind the yarn around the new winding bobbin 22 is achieved. As a result, packages 30 having a predetermined length can be formed one after another.

  In the control of the present embodiment, the yarn breakage occurs while winding the yarn on the winding bobbin 22, and after the winding is stopped in the processing of S110, the yarn is simply wound up and wound. It is only restarted (S103 to S108), and the origin finding operation as described in S102 is not performed again. That is, from the start of winding the yarn 20 onto the empty winding bobbin 22 until the formation of the package 30 is completed until the winding 30 is completed, the origin finding operation performed before starting the winding (S102). The obtained reference point 11o is continuously applied without being changed, and the traverse guide 11 is controlled. By this control, it is possible to avoid a shift in the control position of the traverse guide 11 and obtain a package 30 having a good shape. In addition, since the number of times of performing the origin finding operation is reduced, the winding interruption time can be shortened accordingly, and the production efficiency can be improved.

  Further, in the present embodiment, when the package 30 is full and the doffing operation is performed, the origin returning operation is not performed except when the origin reset switch 75 is operated. That is, the position of the reference point 11o determined in the origin finding operation performed only after the power is turned on is applied consistently throughout the winding operation of the plurality of packages 30, and the traverse guide 11 is controlled. Thereby, the number of times of performing the origin finding operation can be further reduced, and the production efficiency can be further improved.

  However, there may be a case where it is particularly preferable to perform the origin finding operation, for example, when the origin finding has not been performed for a considerably long period of time. In this case, the operator operates the origin reset switch 75 to instruct the resetting of the origin. Then, at the time of doffing operation, the traverse control unit 46 performs control so that the origin is set, and from the next package 30, the traverse guide 11 is controlled based on the newly obtained control origin. As described above, even when the origin reset switch 75 is operated, the origin setting is performed during the doffing operation, not in the middle of winding the yarn 20, so that a step on the end face of the package 30 is prevented and the package 30 having a good shape is formed. Can be obtained.

  As described above, the automatic winder according to this embodiment includes the package drive motor 41, the traverse guide 11, the traverse guide drive motor 45, the origin calculation unit 61, the origin storage unit 62, and the motor control unit 66. . The package drive motor 41 rotates the winding bobbin 22 on which the yarn 20 is wound to form the package 30. The traverse guide 11 engages with the yarn 20 and traverses the yarn 20. The traverse guide drive motor 45 reciprocates the traverse guide 11. The origin calculation unit 61 determines a control origin as a reference for driving the traverse guide 11. The origin storage unit 62 stores the control origin determined by the origin calculation unit 61. The motor control unit 66 continuously sets the control origin determined by the origin calculation unit 61 and stored in the origin storage unit 62 before starting to wind the yarn around the package 30 from the beginning to the end of winding of the package 30. The traverse guide drive motor 45 is controlled by application.

  As a result, it is possible to prevent the origin of origination work from being performed during winding of one package 30 and the control origin of the traverse guide 11 to change, and the control position of the traverse guide 11 to deviate to form a corrugated package. be able to. In addition, since the winding interruption time can be shortened by reducing the number of times of the origin finding operation, a reduction in the productivity of the package 30 can be effectively suppressed.

  In the automatic winder of the present embodiment, the motor control unit 66 is determined by the origin calculation unit 61 before starting to wind the yarn around the first package 30 until the formation of the plurality of packages 30 is completed, and the origin The traverse guide drive motor 45 is controlled by continuously applying the control origin stored in the storage unit 62.

  As a result, the number of times of the origin finding operation can be further reduced, so that the production efficiency of the package 30 can be further improved.

  In the automatic winder of the present embodiment, the motor control unit 66 is determined by the origin calculation unit 61 and stored in the origin storage unit 62 before starting to wind the yarn around the first package 30 after the power is turned on. The traverse guide drive motor 45 is controlled by continuously applying the controlled origin until the formation of the plurality of packages 30 is completed.

  As a result, the origin finding operation needs to be performed only once (in principle) immediately after the power is turned on, so that the production efficiency of the package 30 is further improved.

  Further, the automatic winder of this embodiment includes an origin reset switch 75 that is operated to cause the origin calculator 61 to redetermine the control origin. When the origin reset switch 75 is operated, the origin calculation unit 61 re-determines the control origin and the origin storage unit 62 stores the new control origin again. Thereafter, the motor control unit 66 controls the traverse guide drive motor 45 by continuously applying a new control origin until the formation of the plurality of packages 30 is completed.

  As a result, when it is necessary to re-determine the control origin, the origin can be reset by operating the origin reset switch 75 and the traverse guide 11 can be driven based on the new control origin. Therefore, the control origin can be determined flexibly, and both high quality and improved productivity of the package 30 can be achieved.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

  The traverse device 27 may be configured to be able to control the reciprocating drive of the traverse guide 11 independently of the rotation of the winding bobbin 22. For example, the traverse device 27 may be a traverse device configured to reciprocate the traverse guide by driving a belt with a motor. Can be changed.

  Instead of the configuration in which the winding bobbin 22 is directly driven by the package drive motor 41, the contact roller 29 may be driven by the motor and the package 30 side may be driven to rotate.

  The traverse guide drive motor 45 may be a voice coil motor or a step motor, for example, instead of a servo motor.

  The traverse guide position sensor 47 may be configured to detect the position of the traverse guide 11, the arm member 28, the output shaft of the traverse guide drive motor 45, or the rotor. For example, instead of the rotary encoder employed in the above embodiment, it can be changed to a resolver, for example.

  In the above embodiment, the standby position of the traverse guide 11 is set slightly outside the traverse stroke. However, instead of this, the standby position can be changed to be set at one end of the traverse stroke. Further, the standby position can be set at a position where the arm member 28 contacts the stopper 65 on one side.

  The origin returning operation can be performed at an arbitrary timing as long as it is before starting to wind the yarn 20 around the empty winding bobbin 22. For example, as shown in FIG. 4, it can be performed after the end of the yarn splicing operation, for example, instead of performing the home position operation immediately before the traverse guide 11 is moved to the standby position.

  It is possible to change the origin finding operation so that it is always performed every time the doffing operation of one package 30 is performed. In this case, the origin reset switch 75 can be omitted.

  In the above embodiment, the control origin (reference point) of the traverse guide 11 is set as the center point of the traverse stroke. However, instead of this, for example, a point corresponding to one end of the traverse stroke can be changed to be obtained as the control origin (reference point).

  The origin calculation unit 61, the origin storage unit 62, and the motor control unit 66 can be changed to be provided on the unit control unit 50 side instead of being provided in the traverse control unit 46.

  In the above-described embodiment, the arm member 28 is driven and controlled so that the arm member 28 is first brought into contact with the left stopper 65 of the traverse device 27 in FIG. As the order of contacting the stopper 65 with the stopper 65, the stopper 65 on the right side in FIG.

  The configurations of the traverse device 27 and the traverse control unit 46 are not limited to the automatic winder, and can be applied to, for example, a spinning machine as a yarn winding machine.

The schematic diagram and block diagram which showed the schematic structure of the winder unit with which the automatic winder which concerns on one Embodiment of this invention is provided. The perspective view which shows a mode that a thread | yarn is traversed in a traverse apparatus. The front view which shows the position of the traverse guide used for an origin search operation | work in a traverse apparatus. The flowchart which shows the control in case a power supply is turned on to an automatic winder and winding of a yarn is performed.

Explanation of symbols

11 Traverse guide (Twill yarn guide)
22 Winding bobbin 30 Package 41 Package drive motor (winding bobbin driving device)
45 Traverse guide drive motor (traverse yarn guide drive)
61 Origin calculation part (reference position determination part)
62 Origin storage unit (reference position storage unit)
66 Motor control unit (control unit)

Claims (4)

A winding bobbin driving device for rotationally driving a winding bobbin in which a yarn is wound to form a package;
A traverse yarn guide for traversing the yarn by engaging with the yarn,
A traverse yarn guide driving device for reciprocating the traverse yarn guide;
A reference position determining unit for determining a reference position serving as a reference for driving the traverse yarn guide;
A reference position storage unit that stores the reference position determined by the reference position determination unit;
From the beginning to the end of winding of a package, the traverse yarn guide is continuously applied with the reference position determined by the reference position determination unit and stored in the reference position storage unit before starting to wind the yarn around the package. A control unit for controlling the driving device;
A yarn winding machine comprising: The yarn winding machine according to claim 1,
The control unit continuously applies the reference position determined by the reference position determination unit and stored in the reference position storage unit before starting to wind the yarn around the first package until formation of a plurality of packages is completed. And controlling the traverse yarn guide driving device. A yarn winding machine according to claim 2,
The control unit completes the formation of a plurality of packages based on the reference positions determined by the reference position determining unit and stored in the reference position storage unit before starting to wind the yarn around the first package after the power is turned on. The yarn winding machine is characterized in that the yarn winding machine is applied continuously until controlled to control the traverse yarn guide driving device. A yarn winding machine according to claim 2 or 3,
A re-decision indicating unit operated to re-determine a reference position by the reference position determining unit;
When the re-determination instruction unit is operated, the reference position determination unit re-determines a reference position and the reference position storage unit re-stores a new reference position;
Thereafter, the control unit controls the traverse yarn guide driving device by continuously applying a new reference position until formation of a plurality of packages is completed.

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