JP2002173268A - Yarn winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winder capable of maintaining a slip between a package and a contact roller at winding in a suitable value and forming the package exhibiting uniform thread quality and excellent release property by accurately detecting a diameter of the package on a bobbin attached to a bobbin holder. SOLUTION: The package P and the contact roller 5 are disposed to be apart and close to each other freely. At least one of the package P and the controller 5 moves to be apart from the other in accordance with the increase of the diameter of the package in this yarn winder 1. A sensor 14 for measuring the package diameter of which detecting object is a fixed part is installed on one of a package support member or a controller support member 6, which moves in accordance with the increase of the package diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding machine for winding a yarn around a package while contacting a contact roller, and more particularly, to a yarn winding machine capable of accurately detecting a package diameter during winding. It is related to the machine.

[0002]

2. Description of the Related Art As a conventional yarn winding machine, a bobbin holder (spindle) is rotated by a motor, and the running yarn is wound on a bobbin (winding tube) mounted on the bobbin holder while being traversed and wound. Are known.

[0003] In this yarn winding machine, a contact roller is provided so as to be able to freely contact and separate from the package so that the package on the bobbin holder and the contact roller abut with substantially equal contact pressure during winding. With the increase of
At least one of the package and the contact roller moves so as to be separated from the other. Then, during the contact between the package and the contact roller, the rotation of the bobbin holder is feedback-controlled so that the contact roller rotates at a constant speed.

In the feedback control of the rotation of the bobbin holder, the rotation speed of the bobbin holder is PI-controlled so that the rotation speed (production speed) of the contact roller is constant.
The winding speed (peripheral speed) of the package is kept constant. In addition, by winding the package at a constant peripheral speed, the package diameter can be indirectly obtained by calculation based on the detected rotational speed of the bobbin holder. Ribbon break control such as traverse jump can be performed near the diameter of occurrence.

However, this control condition is satisfied under the condition that the slip between the contact roller and the package is zero, and the package diameter is indirectly obtained from the detected rotational speed of the bobbin holder and the production speed. Therefore, it is difficult to say that an accurate package diameter is always required.

Therefore, Japanese Patent Application Laid-Open No. 8-59078 discloses
There is disclosed a spinning winder provided with a detecting means for directly detecting a package diameter, and controlling a rotation driving means of a bobbin holder in accordance with the detected diameter of the package.

Japanese Patent Laid-Open Publication No. 2000-185871 discloses that a sensor is arranged at a distance from a winding spindle, a bobbin interval (a distance to a package surface) between the bobbin surface and the sensor, and a winding spindle is provided. There is disclosed a winder that measures a spindle interval (distance to a spindle surface) between a spindle and a sensor to calculate a package diameter.

JP-A-6-166465 discloses a winder in which a movable sensor comprising a light emitter and a light receiver is provided near a package, and the sensor is relatively moved with respect to a bobbin holder as the package becomes thicker. Is disclosed. In this winding machine, upon detecting the interruption of the optical axis between the projector and the light receiver by the package, the package diameter is calculated from the number of steps based on the amount of movement of the sensor.

[0009]

However, the spinning winder disclosed in JP-A-8-59078 and JP-A-2000-59078
In the winder disclosed in Japanese Patent Application No. 185871, it is necessary to measure the distance to the package surface, and it is difficult to accurately detect the distance to the package surface having irregularities on the surface. Also, if scattered lint or the like enters the detection area, erroneous detection may occur. In order to prevent this, a special device such as an air curtain is required.

The winding machine disclosed in JP-A-6-166465 is for the case where the contact roller or the like cannot contact the yarn, and there is no contact roller that contacts the package being wound. In addition, since the sensor has irregularities on the surface and the optical axis is interrupted by the vibrating package surface, it is difficult to obtain an accurate package diameter, and it is necessary to provide a special device for moving the sensor. is there.

Accordingly, an object of the present invention is to accurately detect a package diameter on a bobbin mounted on a bobbin holder (spindle) so that slippage between a package and a contact roller during winding can be optimized. Maintain,
An object of the present invention is to provide a yarn winding machine capable of forming a package having a uniform yarn quality and a good unwinding property.

[0012]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and the invention of claim 1 is characterized in that a package and a contact roller are provided so as to be able to freely contact and separate from each other. A yarn winding machine in which at least one of a package and a contact roller moves away from the other with an increase, wherein the yarn winding machine moves out of the package support member or the contact roller support member with an increase in the package diameter. This is a yarn winding machine in which a package diameter measuring sensor whose fixed portion is to be detected is mounted.

According to the above configuration, erroneous detection when the surface of the package is to be detected can be prevented, and the package diameter can be accurately detected without specially providing a sensor moving device. By accurately detecting the package diameter on the bobbin mounted on the bobbin holder, the slip between the package and the contact roller during winding is maintained at an optimal amount, and the yarn quality is uniform and the package is easily unwound. Can be formed.

According to a second aspect of the present invention, there is provided a yarn winding machine in which a package and a contact roller are provided so as to be freely contactable and detachable, and the contact roller moves so as to separate from the package as the package diameter increases. There is a contact roller support member that moves with an increase in the package diameter,
This is a yarn winding machine equipped with a package diameter measurement sensor whose fixed portion is to be detected.

According to this configuration, erroneous detection when the surface of the package is to be detected can be prevented, and the package diameter can be accurately detected without specially providing a sensor moving device. That is, since the sensor moves together with the contact roller support member, the actual package diameter can be accurately detected.

According to a third aspect of the present invention, in the yarn winding machine according to the second aspect, the moving direction of the contact roller supporting member is linear, and a linear scale extending linearly in the moving direction is a detection target of the sensor. It is. According to this configuration, the distance between the sensor and the linear scale can always be kept constant, and the package diameter can be detected with higher accuracy.

[0017]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the overall configuration will be described with reference to FIGS.

FIG. 1 is a side view of a yarn winding machine according to a preferred embodiment of the present invention, and FIG.
FIG. 1B shows a state at the start of winding, and FIG. 1B shows a state during winding. FIG. 2 is a front view of the yarn winding machine.

As shown in FIGS. 1 and 2, the yarn winding machine 1 of the present invention winds a spun yarn Y (a multifilament yarn of synthetic fibers) into a package P.

The yarn winding machine 1 is provided with a turret plate 4 on which two bobbin holders 3a and 3b are mounted on a main body 2, and the turret plate 4 rotates by 180 ° to wind up the bobbin holders 3a and 3b. The main body 2 is provided with a slide box (contact roller support member) 6 having a contact roller 5 on the bobbin holders 3a and 3b so as to be able to move up and down.

The yarn winding machine 1 converts a plurality of yarns (synthetic multifilament yarns) Y which are spun and continuously supplied into a plurality of yarns mounted on a bobbin holder 3a at a winding position. Are wound around bobbins (winding tubes) 7a, 7b... While the contact rollers 5 are in contact with each other.
7b are rotated, and the yarns Y are wound while being traversed by traverse devices 8 provided in the slide box 6 and provided for the respective bobbins 7a, 7b. .

The yarn Y is supplied into the slide box 6 from above through a yarn guide member 9, is traversed by the traverse device 8, and is introduced between the contact roller 5 and the package P in a contact state. It is wound up. In FIG.
The bobbin holder 3a is rotating counterclockwise (counterclockwise).

The bobbin holders 3a and 3b are provided on a turret plate 4 rotatably provided on the main body 2 so as to project 180 ° in parallel from the center thereof and to project in parallel therewith. The position is alternately changed by 180 ° between the upper winding position and the lower standby position that are in contact with each other, the winding is performed at the winding position, and the doffing of the package P that is fully wound at the standby position and the new bobbin 7a, 7b... Are mounted. The bobbin holder 3
The switching of the positions a and 3b is not limited to the rotation of the turret plate 4.

The contact roller 5 is rotatably provided on a slide box 6, and the slide box 6
It is guided by a slide shaft 10 provided on the main body 2 and is provided so as to be movable up and down. The slide box 6 is pressed by the package yarn layer and moves upward as the package diameter increases due to the winding of the yarn Y. The moving direction of the slide box 6 is a direction orthogonal to the axial direction of the bobbin holders 3a and 3b.

The slide box 6 has a cylinder chamber 11
A fluid pressure cylinder (support driving means) 13 constituted by fitting a piston 12 provided on the main body 2 into the cylinder chamber 11 is connected to the cylinder chamber 11, and the fluid pressure from a pressure adjusting means (not shown) is applied to the cylinder. By supplying to room 11,
The contact pressure of the contact roller 5 against the package P is kept at a predetermined value.

In the yarn winding machine 1 of the present invention, a package diameter measuring sensor 14 is attached to the side surface of the slide box 6 to detect a fixed portion which does not move even if the package P is wound up. The head of the sensor 14 is oriented so as to be in the axial direction of the bobbin holders 3a and 3b. In addition, as will be described later with reference to FIG. 3, the main body 2 is provided with a control device that calculates a package diameter based on a detection signal of the package diameter measuring sensor 14.

The package diameter measuring sensor 14 includes:
For example, a reflection-type photoelectric sensor including a light emitter and a light receiver is used. The sensor 14 outputs two phase (phase A and phase B) detection signals (pulse signals) having different phases.
As a fixed portion to be detected by the sensor 14, for example, a linear scale 16 attached to a side surface 15 of the main body is used. The linear scale 16 is formed in a rectangular shape as a whole, and, for example, scales are formed at intervals of 0.1 mm in the longitudinal direction. The measurement direction (longitudinal direction) of the linear scale 16 is parallel to the moving (elevating) direction of the slide box 6, and is fixed so that the scale of the linear scale 16 intersects the extension of the head of the sensor 14. . That is, the moving direction of the slide box 6 is linear, and the linear scale 16 extending linearly in the moving direction is a detection target of the sensor 14.

As described above, the present invention is characterized in that the package diameter measuring sensor 14 is used not to detect the surface of the package but to detect a fixed portion which does not move even if the package P is wound. . The package diameter measuring sensor 14 can accurately detect the actual package diameter even in a package having irregularities on the surface or a vibrating package. Further, since the sensor 14 is provided on the slide box 6 which is moved by being pressed by the yarn layer of the package P, a special device for moving the sensor 14 by increasing the package diameter is not required.

Next, the control device 30 for calculating the package diameter based on the detection signal of the sensor 14 will be described.

FIG. 3 is a block diagram showing the connection between the control device according to the present invention and each device.

As shown in FIG. 3, a detection signal (pulse signal) a from the package diameter measuring sensor 14 is input to the control device 30. More specifically, the sensor 14
Are input to the two-phase input type counter provided in the control device 30. In this counter, for example, when the A phase rises, if the B phase is ON (High), the counter is incremented, and when the A phase rises, the B phase is decremented if the B phase is OFF (Low).

The control device 30 determines the package diameter based on the detection signal from the sensor 14 in a state where the bobbin 7 on which the yarn Y is not wound and the contact roller 5 are in contact (immediately before the start of winding). calculate. That is, the control device 30 calculates the package diameter from the count value of the counter from the start of winding (at the start of contact between the contact roller 5 and the bobbin 7).

For example, the control device 30 can recognize the contact between the bobbin 7 and the contact roller 5 by the drive signal b for the hydraulic cylinder 13 that supports (lifts) the slide box 6. That is, the fluid pressure cylinder 13
When the lifting pressure supplied to the bobbin 7 is reduced, the slide box 6 descends and the bobbin 7 comes into contact with the contact roller 5, so that the control device 30 makes a contact between the bobbin 7 and the contact roller 5 based on the drive signal b at that time. It is possible to determine the start of contact and to measure the subsequent package diameter based on this.

The control device 30 outputs a rotational speed command signal c to the bobbin holder drive motor based on the detected package diameter, and outputs a bobbin holder (spindle) 3.
a can be controlled. Thereby, optimal rotation control of the bobbin holder 3a according to the package diameter can be performed.

Further, the control device 30 can output a speed command signal d to the traverse drive motor in the traverse device 8 based on the detected package diameter to control the traverse speed. That is, when executing control to perform a traverse jump (multi-jump) every time the package diameter reaches a predetermined value, the sensor 14
Since the correct package diameter detected by the method can be used, the jump timing can be accurately determined, and the ribbon winding in which a thread layer having a predetermined width is formed in a band shape on the surface of the package can be reliably prevented.

(Wind number) = (bobbin holder speed) /
(Traverse speed), an accurate package diameter is not required for ribbon avoidance. However, in the multi-jump control, when winding to a predetermined package diameter, it is necessary to jump to the next ribbon avoidance wind number. A package diameter is required. In other words, there is an advantage that when the accurate package diameter can be detected, the jump timing can be accurately determined.

Further, the control device 30 can output an alarm signal A as an overwinding alarm when the package diameter exceeds the limit based on the detected package diameter, and stop the winding of the yarn Y. . If the winding amount of the package P is managed by time, for example, if the time setting is incorrect or other causes, the diameter of the package P may be larger than expected,
According to the present invention, it is possible to reliably detect that the diameter of the package P has become larger than expected.

Further, the control device 30 controls the contact roller 5 (slide box 6) based on the addition / subtraction of the counter.
Means for determining the moving direction of the camera. For example, when the counter is added, it can be determined that the counter has increased, and when the counter has been subtracted, it can be determined that the counter has dropped. Utilizing this, the control device 30
For example, a vibration abnormality is detected from the fact that the contact roller 5 has been lowered by a predetermined width or more during winding, or that the contact roller 5 has repeatedly moved up and down (repeatedly changed the moving direction) during winding. can do.

The operation of the present invention will be described.

The state where the slide box 6 is lowered and is in close contact with the bobbin 7 is set as a reference point. At this time, control device 30 outputs a sensor signal (pulse signal) input from sensor 14.
a is stored as a zero point. When the package P is wound thick, the sensor 14 moves up together with the slide box 6. Each time the sensor 14 passes one scale of the linear scale 16, one pulse signal is input to the control device 30. The control device 30 integrates the pulse signal a and measures the winding layer height (the height change width due to the winding of the package) ΔH. The control device 30 first calculates the current package diameter Dn from the winding layer height ΔH. Specifically, bobbin 7
Assuming that the outer diameter is D ₀ , the following expression is obtained: Dn = D ₀ + ΔH × 2.

Thus, the rotational speed B of the bobbin holder 3a
rpm is YS for the set yarn speed (production speed) and π for the pi
Then, the following equation is obtained: Brpm = YS / π · Dn.

The control device 30 outputs the rotation speed Brpm of the bobbin holder 3a calculated by this equation to the inverter of the bobbin holder drive motor as the next rotation speed command signal c, and feeds back the rotation speed of the bobbin holder 3a for winding. Perform control.

As described above, the yarn winding machine 1 of the present invention measures the actual package diameter using the sensor 14 and controls the rotation speed of the bobbin holder 3 based on the measured diameter. The peripheral speed can be accurately matched with the production speed YS. Since the sensor 14 moves up and down together with the slide box 6 provided with the contact roller 5, it is possible to prevent erroneous detection when the surface of the package has irregularities and vibrates as a detection target, and without specially providing a sensor moving device. , The package diameter can be accurately detected.

Further, the distance between the sensor 14 and the linear scale 16 can always be kept constant, and the package diameter can be detected with higher accuracy.

Since the yarn winding machine 1 of the present invention can accurately detect the actual package diameter, as described above, overwind detection and traverse jump (multi-jump) are performed based on the actual package diameter. ), But can also be used for the innermost layer twill angle sudden change processing.

The abrupt change processing of the innermost layer twill angle means that the yarn Y of the innermost layer until the set diameter is reached (the yarn Y wound on the bobbin 7 while not much time elapses from the winding start time). For example, the angle is suddenly changed from the normal 4 ° to 7 °. This means that the bobbin (paper tube) 7 is slippery,
This is done in consideration of, for example, the inner layer being pressed by the outer layer and shifting as the yarn Y is wound. In order to prevent the yarn from being caught at the time of unwinding, the yarns of different layers are overlapped on the bobbin 7 to prevent This is a process for preventing an arrangement at an angle.

Further, since the control device 30 can determine the moving direction of the slide box 6 based on the detection signal of the package diameter measuring sensor 14, the package P and the package P due to a mechanical failure can be determined based on the change in the moving direction. And / or the occurrence of abnormal vibration of the contact roller 5 can be detected. The alarm signal A is output based on the detection of the abnormal vibration by the control device 30, and the winding of the yarn Y can be stopped.

Next, another embodiment of the present invention will be described.

FIG. 4 is a side view of a yarn winding machine according to another embodiment of the present invention.

As shown in FIG. 4, the yarn winder 40 detects the distance from the side surface of the slide box 6 to the bobbin end (fixed portion), which is the region of the bobbin 7a where the yarn is not wound. This is provided with a photoelectric sensor 41. The head of the sensor 41 is directed in the radial direction of the bobbin holder 3a. Other configurations of the yarn winder 40 are the same as those of the yarn winder 1 shown in FIG. This yarn winding machine 4
0, the control device 30 calculates the package diameter using the detection signal from the sensor 41 in a state where the bobbin 7a on which the yarn Y is not wound and the contact roller 5 is in contact at the start of winding, as a reference value. What should I do?

That is, the detection signal of the sensor 41, which is a distance sensor, is constantly taken into the control device 30 during winding, and the control device 3
At 0, the current package diameter can be calculated from the number of pulses from the reference position to the current position.
In the example of FIG. 4, as in the example of FIG.
Since the fixed portion (bobbin end portion) which does not move even if it is wound thick is detected, the surface of the package P is not detected, and no special device for moving the sensor 41 is required. Accurate measurement of package diameter can be performed.

In the yarn winding machine of the above embodiment, the slide box (contact roller support member) 6 is movable up and down. However, in the present invention, the contact roller support member 6 is fixed. The present invention can also be applied to a yarn winding machine in which the package supporting member moves when the yarn layer of the package P presses the contact roller 5 as the package diameter increases. In this case, a sensor may be provided on the package supporting member on the moving side, and the detection target (the linear scale 16 or the contact roller supporting member 6 provided on the main body 2) at the fixed location may be detected to measure the package diameter.

For example, in FIG. 2, the contact roller supporting member 6 is fixed, and an arm 20 as a package supporting member is provided on the arm supporting member 21 by a fluid pressure cylinder or the like so as to be movable up and down in accordance with the thickness of the package P. It shall be a yarn winding machine. Sensor 14 on arm 20
By attaching the linear scale 16 to the arm support member 21, the same effect as the yarn winding machine 1 can be obtained.

[0055]

As is apparent from the above description,
According to the present invention, the following excellent effects are exhibited.

(1) It is possible to prevent erroneous detection when the package surface is to be detected, and to accurately detect the package diameter without specially providing a sensor moving device. In addition, by accurately detecting the package diameter on the bobbin mounted on the bobbin holder, slippage between the package and the contact roller during winding is maintained at an optimal amount, and yarn quality is uniform and unwinding Can form a good package.

(2) The distance between the sensor and the linear scale can always be kept constant, and the package diameter can be detected with higher accuracy.

[Brief description of the drawings]

FIG. 1 is a side view showing a preferred embodiment of the present invention.

FIG. 2 is a front view of the yarn winding machine shown in FIG.

FIG. 3 is a block diagram showing a connection between a control device according to the present invention and each device.

FIG. 4 is a side view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Yarn winding machine 5 Contact roller 6 Slide box (contact roller support member) 14 Sensor for measuring package diameter 16 Linear scale P package

Claims (3)

[Claims] A yarn winding machine in which a package and a contact roller are provided so as to be able to freely contact and separate from each other, and at least one of the package and the contact roller moves so as to separate from the other as the package diameter increases. A yarn winding machine, wherein a package diameter measuring sensor for detecting a fixed portion is attached to one of a package supporting member or a contact roller supporting member that moves with an increase in the package diameter. . 2. A yarn winding machine in which a package and a contact roller are provided so as to be able to freely contact and separate, and the contact roller moves so as to separate from the package as the package diameter increases. A yarn winding machine characterized in that a sensor for measuring the diameter of a package for detecting a fixed portion is attached to a contact roller supporting member that moves with an increase in the number. 3. The yarn winding machine according to claim 2, wherein the moving direction of the contact roller supporting member is linear, and a linear scale extending linearly in the moving direction is a detection target of the sensor.