KR101249308B1 - Yarn winder and yarn winding method - Google Patents

Abstract

The present invention provides a thread winding machine and a thread winding method having a high effect of eliminating the ear height phenomenon even when the standard ridge angle is reduced by higher requirements such as thread type.

During the package formation period P1 of the summation Y, the roller 31 in contact with the package 18 and the traverse speed can be changed to temporarily increase the traverse speed from the reference speed V1 to the target speed V2. Later, the traverse device 21 repeats the traverse speed change to decrease to the reference speed V1 and the free length FL of the summation Y between the roller 31 and the traverse device 21. Free length change means 41 which repeats the free length change which makes it changeable and increases and decreases the free length FL temporarily, The traverse speed change period T2 and the free length change which change traverse speed are made. The winder 11 which matches or overlaps the free change period F2 to be performed is assumed.

Thread winding, rollers, traps, free length change means

Description

Yarn winding machine and yarn winding method {YARN WINDER AND YARN WINDING METHOD}

The present invention relates to a yarn winding machine and a yarn winding method for winding yarns, for example, synthetic fiber yarns in bobbins to form a package.

For example, the traverse apparatus provided with the traverse guide which reciprocates in the axial direction of a bobbin is provided in the winder as a thread winding machine. And it is comprised so that a package may be wound up thickly by rotating a bobbin, making contact with a touch roller or a friction roller, and twisting a thread. However, when the yarn density is concentrated at the turning portions of yarns at both ends of the package, an ear height portion at which both ends of the package become higher than the central portion occurs, resulting in a problem that the package is in the form of a drum. If the ear height is generated, there is a problem that loosening occurs when unwinding thread from the package in a later process.

Conventionally, in order to eliminate this ear height phenomenon, the mechanism (ear disintegration mechanism) which changes the distance of a traverse apparatus and a roller, while maintaining the contact state of the roller and the package which contact | connects a package, has been developed (for example, See, for example, Patent Document 1). This ear decay mechanism performs the operation of returning to the original state after temporarily increasing the free length of the thread between the traverse device and the roller during the package formation period. This operation makes it possible to temporarily narrow the winding width without changing the width at which the traverse guide reciprocates. The ear height phenomenon is eliminated by repeatedly adjusting the winding width.

In addition, there is a phenomenon called bulge winding separately from the ear height phenomenon. The bulge winding is a phenomenon in which the side surface of a package expands in convex shape by the force which tightens the thread which wound up as the package is wound up thickly, and there exists a problem that the package shape deteriorates.

In order to eliminate this bulge winding, the mechanism (bulge suppression mechanism) which gradually changes the angle (ridge angle) rolled up in the first stage and late stage of a package formation period is developed. This bulge suppression mechanism starts winding from a small ridge in the first step of the package formation period and gradually increases to a large ridge, and gradually decreases from a large ridge to a small ridge to reach the end of the winding. The bulge suppression mechanism changes the ridge angle by gradually changing the traverse speed during the package formation period, changing the density of the package from high density to low density in the electrical stage, and from low density to high density in the later stage. In this way, the bulge winding is eliminated by preventing the real layer from being too tight.

In addition, the ridge angle is determined by higher requirements such as the type of thread such that the angle is appropriate for package formation. Since the ridge angle is determined by the relationship between the traverse speed and the thread winding speed, the change of the ridge angle can be performed by changing the traverse speed or the thread winding speed. For example, in the winder, the elevation angle is changed by changing the traverse speed. The ridge angle determined by higher requirements such as the type of thread and the traverse speed corresponding thereto may be constant throughout the package formation period. On the other hand, like the bulge suppression mechanism mentioned above, it may change gradually by the step in a package formation period. Hereinafter, the ridge angle determined by higher requirements such as the type of thread is referred to as the `` reference ridge '', and the traverse speed corresponding to the reference ridge is referred to as the `` reference velocity ''.

Patent Document 1: Japanese Patent Laid-Open No. 2005-225611

By the way, in the said conventional ear decay mechanism, the effect of adjusting a winding width becomes small by the kind of thread, etc., and the ear height phenomenon may not be fully eliminated. This means that when the reference ridge is large, the effect of adjusting the winding width is large and the ear height phenomenon can be sufficiently resolved, whereas when the reference ridge is small, the effect of adjusting the winding width is small and the ear height phenomenon cannot be sufficiently resolved. When the reference ridge is large, for example, the reference ridge is 10 degrees or more, and when the reference ridge is small, for example, the reference ridge is 6 degrees or less. Depending on the higher requirements, such as the type of thread, the reference ridge angle during the package formation period may be forced to be small, and in the conventional ear decay mechanism, the effect of adjusting the winding width is small and the ear height phenomenon cannot be sufficiently solved. There is.

In addition, in order to eliminate both the ear height phenomenon and the bulge winding, it is considered to provide the bulge suppression mechanism in addition to the conventional ear collapse mechanism. However, in the conventional ear disintegration mechanism, the effect of adjusting the winding width may be lost by the bulge suppression mechanism, and thus there is a problem in that both the elimination of the ear height phenomenon and the elimination of the bulge winding cannot be achieved at the same time. This is because the bulge suppression mechanism reduces the reference ridge angle in the vicinity of the start of winding and the end of the winding of the package, whereas the conventional ear decay mechanism has a sufficient effect of adjusting the winding width when the reference ridge is large. If the reference ridge angle is reduced in the vicinity of the winding start and the winding end of the package, the effect of adjusting the winding width by the ear decay mechanism is lost in that period, and the ear height phenomenon cannot be solved.

The present invention has been made in view of the above problems, and a first object is to provide a yarn winding machine and a yarn winding method having a high effect of eliminating the ear height phenomenon even when the reference angle of elevation is reduced by higher requirements such as the type of yarn. will be. Further, a second object is to provide a thread winding machine and a thread winding method having a high effect of eliminating the ear height phenomenon even when the reference ridge angle is reduced by the bulge suppression mechanism in the vicinity of the winding start and the winding end of the package.

The problem to be solved of the present invention is as described above, and means for solving the problem will be described next.

That is, in 1st invention, as a thread winding machine which forms a package,

A roller contacting the package during the package formation period,

The traverse speed change is arranged upstream of the thread moving direction with respect to the roller to change the traverse speed so that the traverse speed is temporarily increased from the reference speed to the target speed during the package formation period and then reduced to the reference speed. A traverse device to repeat, and

 And a pre-length changing means for repeating a pre-length change that enables the change of the free length of the thread between the roller and the traverse device during the package forming period to temporarily increase and decrease the free length,

The traverse speed changing period for changing the traverse speed and the free length changing period for changing the free length may be matched or overlapped.

In the second invention, in the first invention,

The traverse device is a thread winding machine characterized in that the target speed in the traverse speed changing period is adjustable.

In 3rd invention, in 1st or 2nd invention,

The traverse device gradually increases the reference speed in the first stage of the package formation period and gradually decreases the reference speed in the later stage, and temporarily increases the traverse speed from the reference speed to the target speed during the package formation period. It is set as the thread winding machine in any one of Claim 1 or 2 characterized by repeating the traverse speed change which reduces to the said reference speed after making it become the said.

In the fourth invention, in the third invention,

The traverse device makes the target speed constant in the traverse speed changing period, and gradually decreases the amount of change in the traverse speed in the traverse speed changing period in the first step of the package forming period, and in the later stage of the package forming period. It is set as the thread winding machine characterized by gradually increasing the change amount of the traverse speed in a traverse speed change period.

In the fifth invention, as a thread winding method for forming a package,

During the package formation period, the traverse speed change of the traverse device is temporarily increased from the reference speed to the target speed, and then the traverse speed change is decreased to the reference speed,

During the package formation period, the free length change is repeated to temporarily increase and decrease the free length of the thread.

The traverse speed changing period for changing the traverse speed and the free length changing period for changing the free length are set as the thread winding method.

EFFECTS OF THE INVENTION [

As an effect of this invention, the effect as shown below is acquired.

According to the first aspect of the invention, the ridge angle can be temporarily increased while the free length change is made by matching or overlapping the traverse speed change period for changing the traverse speed and the free length change period for changing the free length. Therefore, even if the standard ridge angle is reduced due to higher requirements such as the type of thread, the ridge angle can be temporarily increased while the free-lance change is performed, and the effect of adjusting the winding width is sufficiently obtained, which effectively eliminates the ear height phenomenon. have.

According to the second aspect of the present invention, by adjusting the target speed in the traverse speed changing period, it is possible to make the target speed an effective effect of adjusting the winding width according to the stage during the package formation period. For this reason, the ear height phenomenon can be effectively eliminated.

According to the third invention, the bulge winding can be eliminated by preventing the real layer from being excessively tightened by gradually increasing the reference speed in the first step of the package formation period and gradually decreasing the reference speed in the later step. In addition, in the stage where the reference speed in the vicinity of the winding start and the winding end of the package is small and the reference ridge is small, the traverse speed is temporarily set from the reference speed to the target speed. As a result, the ridge angle can be temporarily increased, and the effect of adjusting the winding width is sufficiently obtained, and the ear height phenomenon can be effectively eliminated. Therefore, both the ear height phenomenon and the bulge cold can be eliminated.

According to the fourth aspect of the invention, in order to make the target speed in the traverse speed change period constant and the traverse speed as the target speed, the amount of change in the traverse speed in the traverse speed change period is gradually changed in accordance with the steps during the package formation period. Accordingly, the ear speed phenomenon and the bulge winding can be effectively eliminated by setting the target speed as the speed at which the ear height phenomenon can be effectively solved.

According to the fifth aspect of the invention, the ridge angle can be temporarily increased while the free length change is made by matching or overlapping the traverse speed change period for changing the traverse speed and the free length change period for changing the free length. Therefore, even if the standard ridge angle is reduced due to higher requirements such as the type of thread, the ridge angle can be temporarily increased while changing the free length, and the effect of adjusting the winding width is sufficiently obtained, which effectively eliminates the ear height phenomenon. Can be.

EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described using drawing.

Example 1

The winder 11 as a thread winding machine by Example 1 of this invention is demonstrated using FIGS. The winder 11 of the present Example 1 winds up the composite fiber (synthetic fiber yarn) Y as thread yarn to the bobbin 17, and forms the package 18. FIG. In addition, although the yarn winding machine which winds up a synthetic fiber (synthetic fiber yarn) is demonstrated below, this invention is not limited to this, It can also be a yarn winding machine which winds up spinning fiber yarns, such as cotton yarn.

As shown in FIG. 1, the winder 11 includes a gas frame 12, which includes a slide box 42 that can be lifted and lowered with respect to the gas frame 12, and a gas frame 12. The turret plate 14 which is rotatable with respect is provided. The turret plate 14 is rotatable about the rotation axis 15 by a rotation drive device (not shown). Two bobbin holders 16 for mounting the bobbin 17 protrude from the turret plate 14 at positions symmetrical with respect to the rotation shaft 15. By inverting the turret plate 14 by the rotation drive device, the positions of the two bobbin holders 16 can be alternated such that one side of the bobbin holder 16 is in the upper winding position and the other is in the lower standby position. .

As shown in FIG. 4, two bobbin holders 16 provided on the turret plate 14 are connected to the bobbin holder drive motor 19 and are rotatable. Each bobbin holder drive motor 19 is electrically connected to the controller 13. The controller 13 is configured as a known microcomputer, and is provided with storage means such as a CPU as a computing device, a ROM, a RAM, an external storage device, and the like. The controller 13 controls the driving of various driving motors based on signals generated by various sensors described later.

As shown in FIG. 1, the winder 11 has a free length for changing the traverse device 21, the contact roller 31, and the free length FL between the traverse device 21 and the contact roller 31. The change means 41 is further provided. The slide box 42 provided to be movable up and down relative to the base frame 12 constitutes a part of the free length changing means 41. The traverse apparatus 21 and the contact roller 31 are provided in the slide box 42.

The traverse apparatus 21 is arrange | positioned with respect to the contact roller 31 in the advancing direction upstream of the summation Y, and the position is fixed with respect to the slide box 42. As shown in FIG. By traversing the traverse range in a state where the traverse guide 22 is engaged with the summ Y supplied from the upper side of FIG. 1, the summation Y sent out in the downstream direction is stiffened. As shown in FIG. 4, the traverse device 21 is provided with a traverse motor 23 for driving the traverse guide 22, and the traverse motor 23 is electrically connected to the controller 13 to control driving. It is becoming. It is possible to change the traverse speed by controlling the rotation speed of the traverse motor 23 with the controller 13. In addition, the traverse apparatus 21 should just be able to change the traverse speed, and may be a rotary traverse apparatus using a rotary blade, or another known traverse apparatus.

As shown in FIG. 2, the contact roller 31 is driven and rotated by the package 18 during the package formation period P1 of the summation Y, and the summation summed up by the traverse device 21 ( Y) is accommodated and the summation (Y) is exchanged on the outer circumference of the package 18. The contact roller 31 is rotatably supported at the side of the first end 33 of the arm 32, and the arm 32 is pivotably provided with respect to the slide box 42. As shown in FIG. An air cylinder 35 is connected to the second end 34 side of the arm 32 with the slide box 42. By swinging the arm 32 in the up and down direction, the contact roller 31 moves in a direction approaching the bobbin 17 at the wound position or in a direction separate from the bobbin 17 and relative to the slide box 42. You can change the location. The air cylinder 35 is a contact pressure adjusting means, so that the contact roller 31 is in contact with the outer circumferential surface of the package 18 at a predetermined contact pressure, and is driven by the rotation of the package 18.

The free length changing means 41 is capable of changing the free length FL of the summation Y between the contact roller 31 and the traverse device 21 during the package formation period P1 as in the conventional ear decay mechanism. It is. In the first embodiment, the free length changing means 41 is composed of a slide box 42, a rail 43, a ball screw mechanism 44, and the like. In the free length FL of the first embodiment, the summation sum until the summation Y coupled to the traverse device 21 is released from the traverse device 21 and comes into contact with the circumferential surface of the contact roller 31 ( It is assumed that the free length of Y). The slide box 42 is guided by the rail 43 provided in the up-down direction of the base frame 12, and is movable in the up-down direction by the ball screw mechanism 44 provided in the base frame 12.

The ball screw mechanism 44 is composed of a screw rod 45, a ball nut 46, a lift drive motor 47, and the like. The screw rod 45 is disposed to face upward and downward to be rotatably supported with respect to the base frame 12. The lift drive motor 47 drives the screw rod 45 to rotate, and is connected to the lower end of the screw rod 45. The lift drive motor 47 is electrically connected to the controller 13 so that driving is controlled (see FIG. 4). The slide box 42 is provided with a ball nut 46 which is screwed to the screw rod 45, and the slide box 42 is raised and lowered by the forward and reverse rotation of the screw rod 45 by the lifting drive motor 47. . The slide box 42 is separated from the package 18 by raising, and is approached with respect to the package 18 by lowering.

As shown in FIG.2 and FIG.4, the slide box 42 is provided with the arm position sensor 36 which detects the inclination movement of the arm 32. As shown in FIG. The arm position sensor 36 is electrically connected to the controller 13, and is turned on when the arm 32 is brought into the normal position with respect to the slide box 42, and the arm 32 is predetermined from the normal position. If it is separated by more than a distance, it turns OFF. The inclined movement of the arm 32 is caused by the contact roller 31 being displaced upward by the package 18 being wound up thickly, or the contact roller 31 being displaced up and down by the rising and lowering of the slide box 42. It is generated. That is, the arm position sensor 36 detects that the contact roller 31 is in the normal position with respect to the slide box 42 in the ON state. Further, it is detected that the contact roller 31 is displaced upward or downward relative to the slide box 42 in the OFF state.

As shown in FIG.2 and FIG.4, the arm 32 is provided with the rotation sensor 37 which detects the rotational speed of the contact roller 31. As shown in FIG. The rotation sensor 37 detects the rotational speed of the contact roller 31 which is driven by the package 18 and rotates, and detects the outer circumferential speed of the package 18. The rotation sensor 37 is electrically connected to the controller 13. And the drive of the bobbin holder drive motor 19 is controlled so that the rotation speed which the rotation sensor 37 detects may become constant. Specifically, when the detected value of the rotation sensor 37 is less than the predetermined value according to the winding speed, the controller 13 increases the rotation speed of the bobbin holder drive motor 19. Conversely, if the detected value exceeds a predetermined value, the controller 13 controls to reduce the rotational speed of the bobbin holder drive motor 19.

Next, a description will be given of the control of repeating the free length change to temporarily increase and decrease the free length FL during the package formation period P1. This control is also performed in the conventional ear decay mechanism, and as shown in Fig. 5, two types of control are repeated: control to change the free length and control to normalize the free length. In other words, the control for changing the free length is performed intermittently and periodically, and the control for normalizing the free length is performed therebetween. The program which performs this control is stored in the ROM of the controller 13, and is read out and executed by the RAM. In addition, the period in which the free length change is performed is called the free length change period F2, and the period in which the free length is normal is called the free length normal period F1.

First, the control to make the free length normal will be described. The control to make the free length normal is control to keep the relative position of the contact roller 31 with respect to the slide box 42 at the top. In order to keep the relative position of the contact roller 31 with respect to the slide box 42 to normal, control which raises the slide box 42 according to the winding thickness of the package 18 in the package formation period P1 is performed. .

Control to raise the slide box 42 according to the winding thickness of the package 18 is performed as follows. As shown in FIG. 2, the package 18 is formed to some extent on the bobbin 17, and the radius of the package 18 at this time is called r. The position of the arm 32 at this time is assumed to be a normal position with respect to the slide box 42. Further, it is assumed that the winding is progressed thickly, and the radius of the package 18 is increased by a small amount of dr to be r + dr. Then, the contact roller 31 in contact with the package 18 is raised relative to the slide box 42 by this thick wound dr. And the position of the arm 32 is inclinedly moved upwards from the normal position with respect to the slide box 42 than the state of FIG.

The arm position sensor 36 which has changed from the ON state to the OFF state and has detected the tilt movement of the arm 32 transmits a signal to the controller 13. The controller 13 which received the signal drives the lift drive motor 47 of the ball screw mechanism 44 to raise the slide box 42 by the thickness dr. The contact roller 31 is lowered with respect to the slide box 42 by raising the slide box 42, and it is controlled to return the position with respect to the slide box 42 of the contact roller 31 to an original normal position.

In this way, the relative position of the contact roller 31 with respect to the slide box 42 is detected by the arm position sensor 36. When the relative rise of the contact roller 31 is detected, the slide box 42 is raised to control to return the relative position of the contact roller 31 with respect to the slide box 42 to its original state. By this control, as the package 18 in the package formation period P1 is wound up, the slide box 42 is gradually raised. Further, the free length FL of the summation Y between the traverse guide 22 of the traverse device 21 and the circumferential surface of the contact roller 31 is kept constant.

In addition, in the control of making the normal length normal, the free length FL is set to the minimum (FL = FL1). By performing the control in which the free length FL is kept to a minimum, the difference (traverse delay) between the axial position where the summation Y is traversed and the axial position where the seal is actually accommodated in the contact roller 31 is kept to a minimum. . Thereby, the winding width of the package 18 can be set as it was set.

Subsequently, the control for changing the length will be described. This control is a control to temporarily increase and decrease the free length FL during the package formation period P1 regardless of the winding of the package 18. In this embodiment, the free length FL is increased and then decreased to return the free length FL to its original state. As shown in FIG. 3, first, the controller 13 drives the lift drive motor 47 to temporarily raise the slide box 42. When the slide box 42 is raised, the contact roller 31 is lowered relative to the slide box 42 by its own weight to maintain the contact with the package 18. On the other hand, since the traverse apparatus 21 is fixed to the slide box 42, the traverse apparatus 21 raises with the slide box 42. As shown in FIG. As a result, the free length FL of the summation Y between the traverse guide 22 of the traverse apparatus 21 and the contact roller 31 increases. The free length FL of the summation Y between the contact roller 31 and the traverse apparatus 21 becomes the maximum (FL = FL2) in the state which raised the slide box 42 highest.

Thereafter, the controller 13 drives the lifting drive motor 47 in the reverse direction to lower the slide box 42 and reduce the free length FL. Then, by returning the slide box 42 to its original position, the free length FL is returned to the original state (FL = FL1), and the control for changing the free length is terminated.

As shown in FIG. 6, this control measures the difference between the axial position (position of the traverse guide 22) in which the summation Y is traversed and the axial position in which the summation Y is accommodated in the contact roller 31. It is an increasing control. In other words, the traverse delay D1 is temporarily increased to the traverse delay D2. That is, if the reference ridge angle A1 is constant a1, the sum sum Y is accommodated in the contact roller 31 at the axial position N1 and the traverse delay is D1 when the free length FL is FL1. In addition, when free length FL = FL2, the sum sum Y is accommodated in the contact roller 31 in the axial position N2, and the traverse delay becomes D2. Even if the traverse guide 22 reaches the end of the traverse range due to the difference D2-D1 of the traverse delay, the summation Y is actually at a position near the center in the axial direction by the difference D2-D1 of the traverse delay. It is wound around the package 18. In other words, by raising the slide box 42 to temporarily increase the free length FL from FL1 to FL2, the winding width in the axial direction when the summation Y is wound on the package 18 is temporarily narrowed.

5, in the package formation period P1, the free length normal period F1 and the free length change period F2 are repeated. As a result, the winding width is narrowed in the winding in the free length change period F2 with respect to the package 18 which has become slightly eared due to the winding in the free length normal period F1, and thus the axial direction center side of the package 18. It will be wound around [volume change (W1)].

However, although the ear height phenomenon may be sufficiently eliminated by the control performed in the conventional ear disintegration mechanism described so far, the effect of adjusting the winding width becomes smaller depending on the type of the summation Y, and the ear height phenomenon. There was a case that could not be solved sufficiently. When the reference ridge angle A1 is large, the effect of adjusting the winding width is large, and the ear height phenomenon can be sufficiently resolved. However, when the reference ridge angle A1 is small, the effect of adjusting the winding width is small, and the ear height phenomenon is sufficiently resolved. It can't be done. In addition, the case where the reference ridge is large is 10 degrees or more, for example, and the case where the reference ridge is small is, for example, the reference ridge is 6 degrees or less.

This phenomenon can be explained as follows. As illustrated in FIG. 5, temporarily increasing the free length FL to FL2 in the free length change period F2 is to temporarily increase the traverse delay D1 to D2 as shown in FIG. 6. . That is, the difference between the axial position (position of the traverse guide 22) where the summation Y is traversed and the axial position where the summation Y is actually accommodated in the contact roller 31 is temporarily increased. As shown in Fig. 7, when the reference ridge angle A1 is large (A1 = a1), the difference D2-D1 of the traverse delay is also sufficiently large. The summation Y is wound around the package 18 at a position near the center in the axial direction by the difference D2-D1 of the traverse delay, so that the winding width is also large. On the other hand, when the reference ridge angle A1 is small (A1 = a2), the difference d2-d1 of the traverse delay becomes small. The combined fiber Y is traversed to the vicinity of the axial outer side and wound around the package 18, so that the effect of adjusting the winding width is small. Therefore, when the reference ridge angle A1 is small, that is, when the traverse delay is small, the effect of narrowing the winding width of the summation Y is small even if the free length FL is temporarily increased, and the ear height phenomenon cannot be sufficiently solved. .

Therefore, in the winder 11 according to the first embodiment of the present invention, in order to solve the above problems in the conventional ear disintegration mechanism, the angle is temporarily raised in accordance with the timing of temporarily increasing the free length FL from FL1 to FL2. Increase That is, as shown in FIG. 8, the traverse apparatus 21 changes the traverse speed and adjusts the ridge angle according to the timing of temporarily increasing the free length FL from FL1 to FL2. This control repeats two types of control: control to change the traverse speed and control to make the traverse speed normal. In other words, the control for changing the traverse speed is performed intermittently and periodically, and the control for normalizing the traverse speed is performed in the meantime. The program for performing this control is stored in the ROM of the controller 13, read into the RAM, and executed. In addition, the period in which the traverse speed is changed is called a traverse speed change period T2, and the period in which the traverse speed is normal is called a traverse speed normal period T1. In the first embodiment, the traverse speed change period T2 and the above-described length change period F2 coincide with each other.

First, the control to make the traverse speed normal in the traverse speed normal period T1 will be described. This control is a control in which the ridge angle is normal by making the traverse speed normal. The ridge angle in this case is the reference ridge angle A1 determined by higher requirements such as the type of the summation Y, and the traverse speed (reference speed V1) corresponding to the reference ridge angle A1 is calculated by calculation. The traverse speed (reference speed V1) corresponding to the reference ridge angle A1 is set in advance in the program of the controller 13. The reference speed V1 in the first embodiment is constant, and the controller 13 controls the drive of the traverse motor 23 to control the traverse speed to maintain the reference speed V1.

Subsequently, the control for changing the traverse speed in the traverse speed changing period T2 will be described. This control is a control that repeats increasing the traverse speed from the reference speed V1 to the target speed V2 and then decreasing the reference speed V1 during the package formation period P1. The target speed V2 is a traverse corresponding to the ridge angle (target ridge angle A2) in which the effect of narrowing the winding width of the summation Y is sufficiently exhibited by the change in the free length FL in the free length change period F2. Speed. The target ridge angle A2 and the target speed V2 are speeds determined based on the change amount FL2-FL1 and the reference ridge angle A1 of the free length FL, and are set in advance in the program of the controller 13. The controller 13 controls the driving of the traverse motor 23 to increase the traverse speed from the reference speed V1 to the target speed V2 temporarily, and then to reduce the traverse speed to the reference speed V1. In addition, since the reference speed V1 in the present embodiment is constant, the reference speed V1 before and after the traverse speed change is constant.

As described above, according to the first embodiment, the traverse speed changing period T2 for changing the traverse speed and the free length changing period F2 for changing the free length are coincident with each other. As a result, the ridge angle can be temporarily increased while performing the free length change. For this reason, even when the reference ridge angle A1 is reduced due to higher requirements such as the type of summation Y, the ridge angle can be temporarily increased during the change of the free length, and the effect of adjusting the winding width is sufficiently obtained. It can effectively eliminate the ear height phenomenon.

[Example 2]

Next, the winder 11 as a thread winding machine which concerns on Example 2 of this invention is demonstrated using FIGS. In the second embodiment, the bulge suppression mechanism is provided in the winder 11 of the first embodiment, which is significantly different from the first embodiment. Detailed description of the same parts as in Example 1 is omitted.

The bulge suppression mechanism is a mechanism known in the art and, in order to eliminate the bulge winding of the package 18, as shown in FIG. 9, the ridge angle in the first step P2 and the later step P3 of the package formation period P1 is shown. It is a mechanism that changes gradually. The ridge angle in this case is the reference ridge angle A1 determined by higher requirements such as the kind of the summation Y. Therefore, in the bulge suppression mechanism, the reference ridge angle A1 is changed. In the bulge suppression mechanism, the winding starts from the small reference ridge angle A1 in the electrical phase P2 of the package formation period P1, and gradually increases the reference ridge angle A1, and gradually decreases the small reference ridge angle (P3) in the later stage P3. Reduction to A1) leads to the end of the winding. The bulge suppression mechanism changes the density of the package 18 from high density to low density in the first stage P2, and changes from low density to high density in the later stage P3 to prevent excessive tightening of the seal layer, thereby eliminating bulge winding. .

When such a bulge suppression mechanism is provided with a conventional ear decay mechanism which merely repeats the control of changing the free length and the control of returning the normal to the normal length, there is a problem that the effect of adjusting the winding width is lost by the bulge suppression mechanism. Therefore, there was a problem that both the elimination of the ear height phenomenon and the elimination of the bulge cold could not be simultaneously achieved. This is because the conventional ear decay mechanism can sufficiently obtain the effect of adjusting the winding width when the reference ridge angle A1 is large. As shown in FIG. 9, the bulge suppression mechanism is near the start of winding of the package 18 and the end of winding. This is because the reference ridge angle A1 in the vicinity is made small. If the reference ridge angle A1 is reduced in the vicinity of the start of winding and the end of the winding of the package 18, the effect of adjusting the winding width by the ear decay mechanism is lost, and the ear height phenomenon cannot be solved.

Thus, in the winder 11 according to the second embodiment, in order to solve the above problem, the ridge angle is temporarily increased in accordance with the timing of temporarily increasing the free length FL, as shown in FIG. And the change amount of a ridge angle is made to increase more in the vicinity of the winding start and the winding end of the package 18 with small reference ridge angle A1.

The control of the traverse speed in the second embodiment will be described in detail. This control repeats two types of control: control for changing the traverse speed and control for making the traverse speed normal. In other words, the control for changing the traverse speed is performed intermittently and periodically, and the control for normalizing the traverse speed is performed in the meantime. And also in the control which makes a traverse speed normal, the reference ridge angle A1 (reference speed V1) gradually increases in the electrical stage P2 of package formation period P1. In addition, in the later stage P3, the reference ridge angle A1 (reference speed V1) gradually decreases. For this reason, the traverse speed is also changed slowly in the control which makes the traverse speed normal. The program which performs this control is stored in the ROM of the controller 13, and is read out and executed by the RAM. In the first embodiment, the traverse speed changing period T2 coincides with the above-described length changing period F2.

The control for making the traverse speed normal is described. This control is a control in which the ridge angle is normal by making the traverse speed normal. The ridge angle in this case is the reference ridge angle A1 determined by higher requirements such as the type of the summation Y and the bulge suppression mechanism, and the reference ridge angle A1 gradually changes during the package formation period P1. And the traverse speed (reference speed V1) corresponding to the reference ridge angle A1 which changes gradually is calculated | required by calculation, and is previously set in the program of the controller 13. The controller 13 controls the driving of the traverse motor 23 to control the traverse speed to maintain the reference speed V1.

Subsequently, the control for changing the traverse speed will be described. This control is a control for temporarily increasing the traverse speed from the reference speed V1 to the target speed V2 and then decreasing the reference speed V1 during the package formation period P1. The target speed V2 is a traverse corresponding to the ridge angle (target ridge angle A2) in which the effect of narrowing the winding width of the summation Y is sufficiently exhibited by the change in the free length FL in the free length change period F2. Speed. The target ridge angle A2 and the target speed V2 are speeds determined based on the change amount FL2-FL1 and the reference ridge angle A1 of the free length FL, and are set in advance in the program of the controller 13. The controller 13 controls the driving of the traverse motor 23 to increase the traverse speed from the reference speed V1 to the target speed V2 temporarily, and thereafter, to reduce the traverse speed to the reference speed V1. In addition, since the reference speed V1 in this embodiment is changing, the reference speed V1 before and after the traverse speed change is also changing.

As described above, according to the second embodiment, the reference speed V1 is gradually increased in the electrical phase P2 of the package formation period P1. Also, in the later stage P3, the reference speed V1 is gradually decreased. Thereby, a bulge winding can be eliminated by preventing a thread layer from being tightened too much. The traverse speed is temporarily set from the reference speed V1 to the target speed V2 even at the stage where the reference ridge angle A1 is small in the vicinity of the start of winding and the end of the winding of the package 18. As a result, the ridge angle is temporarily increased, and the effect of adjusting the winding width is sufficiently obtained, and the ear height phenomenon can be effectively eliminated. Therefore, both the ear height phenomenon and the bulge cold can be eliminated.

In addition, this invention is not limited to each said embodiment, For example, it can change as follows.

In the above embodiment, the traverse speed changing period T2 for changing the traverse speed and the free length changing period F2 for changing the free length are coincident with each other. However, it is not limited to making it match, but it is good to overlap the traverse speed changing period T2 and the free length changing period F2. In other words, the timing for changing the traverse speed and the timing for changing the free length do not have to completely match. If the period in which the length of the FL is increasing and the period in which the traverse speed is increasing are partially overlapped, the effect of adjusting the winding width due to the increase in the length of the FL is increased, thereby increasing the effect of eliminating the ear height phenomenon. Can be.

In addition, although the target speed V2 of the traverse speed was made constant, it is not limited to this, You may make it adjustable. In this case, according to the stage during package formation period P1, the effect of adjusting a winding width can be made into high speed. For this reason, the ear height phenomenon can be effectively eliminated.

Further, the start time, the number of times, the change amount, the end time, etc. of performing the traverse speed change and the free length change can be appropriately adjusted.

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 extends to the whole range of the technical idea which the present invention which is apparent from the matters described in the specification and the drawings truly intends.

1 is a front view showing a winder 11 according to a first embodiment of the present invention.

2 is an enlarged front view illustrating the configuration of the slide box 42.

3 is an enlarged front view showing a shape in which the arm 32 is inclinedly moved according to the winding thickness of the package 18 in the free length normal period F1.

4 is a control system diagram of the winder 11.

5 is a diagram illustrating a relationship between the free length FL, the winding width, and the ridge angle.

6 is a diagram illustrating a relationship between a free length FL and a traverse delay.

FIG. 7 is a diagram illustrating a relationship between a free length FL, a ridge angle, and a traverse delay.

8 is a diagram illustrating a relationship between the free length FL, the winding width, and the ridge angle.

It is a figure which shows the reference ridge angle A1 of a bulge suppression mechanism.

10 is a diagram showing a reference ridge angle A1 and a target ridge angle A2 of the winder 11 according to the second embodiment of the present invention.

Claims (5)

As the thread winding machine forming the package: A roller contacting the package during the package formation period, The traverse speed change is arranged upstream of the thread moving direction with respect to the roller to change the traverse speed so that the traverse speed is temporarily increased from the reference speed to the target speed during the package formation period and then reduced to the reference speed. A traverse device to repeat, and Free length changing means for reconfiguring the free length of the thread between the roller and the traverse device during the package forming period so as to repeat the free length change to temporarily increase and decrease the free length; And a traverse speed changing period for changing the traverse speed and a free length changing period for changing the free length. The method of claim 1, And said traverse apparatus makes it possible to adjust said target speed in said traverse speed change period. 3. The method according to claim 1 or 2, The traverse device gradually increases the reference speed in the first stage of the package formation period and gradually decreases the reference speed in the later stage, and temporarily increases the traverse speed from the reference speed to the target speed during the package formation period. And a traverse speed change which is later reduced to the reference speed. The method of claim 3, wherein The traverse device makes the target speed constant in the traverse speed changing period, and gradually decreases the amount of change in the traverse speed in the traverse speed changing period in the first step of the package forming period, and in the later stage of the package forming period. A thread winding machine characterized in that the amount of change in the traverse speed is gradually increased in the traverse speed changing period. As the yarn winding method of forming a package: During the package formation period, to temporarily increase the traverse speed of the traverse device from the reference speed to the target speed and then to repeat the traverse speed change to decrease to the reference speed; During the package formation period, repeating the free length change which temporarily increases and decreases the free length of the thread; And a traverse speed changing period for changing the traverse speed and a free length changing period for changing the free length.

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