JP2936917B2 - Automatic winder tension control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension control device for an automatic winder, which rewinds a yarn from a spinning bobbin to form a package.

[0002]

2. Description of the Related Art In an automatic winder, after spinning out a spinning bobbin supplied from a spinning machine, the bobbin is supplied to each winding unit and wrapped around a paper tube or a package rotating on a drum to form a full package. It is.

In this automatic winder, the spinning operation of the spinning bobbin, the yarn splicing operation of the lower yarn on the bobbin side and the upper yarn on the package side when the yarn breaks during winding, and the spinning bobbin become empty. The cup change operation at the time, the doffing operation when the package is full, etc. are all automated, and the operation conditions can be set in the control device that manages each weight so that the operation conditions can be set Has become.

[0004]

By the way, the tension of the yarn wound from the bobbin to the package is detected by a tension sensor and adjusted to a predetermined tension by a tension device such as a tensor. . However, at the beginning of the winding of the package, only the paper tube is used, and the friction roller of the cradle supporting the package is in contact with the drum and is turned. In this case, it is preferable to wind the package with a tension higher than the set tension. There is a problem that the tension cannot be changed.

Accordingly, an object of the present invention is to solve the above problems and to provide a tension control device for an automatic winder capable of automatically controlling the tension in accordance with the state of unwinding of a bobbin.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a winding unit which is provided on a winding unit from a spinning bobbin.
Apply tension to the running yarn in the middle of the yarn running path to the cage.
The tension unit is installed in the winding unit.
Unit that controls the winding unit and the winding unit.
A controller for setting winding conditions is connected to the unit controller.
The additional tension adjusted by the tension
In addition to memorizing so that the applied tension is constant,
At the start of take-up after threading or re-starting take-up at the time of splicing.
High additional tension so that tension is higher than normal additional tension
To reduce the residual yarn of the spinning bobbin and reduce the unwinding resistance.
When the tension increases, the tension becomes weaker than the normal additional tension.
So that the applied tension is weak,
The above-mentioned control device is stored according to the unwinding state of the spinning bobbin.
With these tension control maps, the tension device
The tension applied to the yarn is controlled .

[0007]

According to the above configuration, the tension adjusted by the tension device is stored in the control device, and the unit controller
However, after the cup change,
When rewinding is resumed after a break, the control unit
To the unit controller.
Output to improve the shape of the yarn layer at the beginning of winding the package.
And then return to normal applied tension to take up the winding
Good take-up is possible, and the spinning bobbin
When the remaining yarn runs low, the control
From the applied tension, the stored weak additional tension is
By outputting to the roller, the tension device
Increase the tension of the running yarn so that the additional tension is weaker than the applied tension.
Adjustment to prevent thread breakage when remaining thread is low
Can be stopped.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows the details of the winding unit 11 of the automatic winder 10.

The yarn Y of the spinning bobbin 12 is wound on a package P rotating on a drum 17 via a balloon controller 13, an optical filler 14, which detects the presence or absence of the yarn, a tension device 15, a clearer 16, and the like. Can be In this package P, the paper core 18 is the cradle 1
9 rotatably supported. On the large diameter side of the cradle 19, there is provided a friction roller 20 having a diameter slightly larger than the diameter of the paper tube 18 on the large diameter side.
Is to be wound up.

The yarn signal of the clearer 16 is input to the unit controller 21. Unit controller 21
The slab, thick thread, when a thin yarn such as yarn defect, in clear <br/> error 16, the yarn was removed by cutting, thereby subsequently rotating the suction mouth 22 to the package side, at the same time the drum 17 is rotated in the reverse direction to capture the upper thread, and then the suction mouth 22 is rotated downward to guide the upper thread to the yarn joining device 23,
In addition, the bobbin-side yarn is captured by the relay pipe 24, guided to the yarn joining device 23, and after the upper and lower yarns are joined by the yarn joining device 23, the drum 17 is rotated to restart winding. ing.

The rotation of the drum 17 is detected by a drum rotation sensor (not shown), and the controller 21 counts and accumulates drum pulses from the sensor. This integrated value is compared with the set value of the control device 25 for controlling each unit 13, and when the set value is reached, the package is assumed to be full and the drum 17 is stopped, the green lamp 26 is turned on and the ball is turned on. Put the machine in a waiting state.

The balloon controller 13 includes a fixed cylinder 26
A movable cylinder 27 fitted to the fixed cylinder 26; an elevating device 28 supporting the movable cylinder 27 so as to be vertically movable; and an elevating device 28 provided for the upper shoulder of the yarn layer of the spinning bobbin 12. It comprises a residual yarn sensor 29 for detecting.

[0014] Detection signals of the residual yarn sensor 29 is inputted to the unit controller 21 for controlling the winding unit 11, the controller 21, the residual yarn sensor 29 constantly detects the upper shoulder of the thread layer of the spinning bobbin 12 Lifting device 28
Is operated to control the position of the movable barrel 27 to control the balloon of the yarn unwound from the bobbin 12, thereby preventing the ball from being broken.

Although not shown in detail, the tension device 15 controls the tension of the yarn Y by a voltage supplied to the electromagnetic solenoid 30.

The control device 25 stores a tension control map according to the winding state of the package P and the unwinding state of the spinning bobbin 12 for controlling the tension adjusted by the tension device 15. And the tension applied to the yarn Y by the tension device 15 is controlled. That is, the control device 25 includes the tension device 1
The additional tension adjusted in step 5 is different from the normal additional tension during winding.
Normal additional tension at the start of winding and at the time of splicing.
It is memorized to have higher applied tension, and
Controller 21 reduces the number of remaining yarns on the spinning bobbin 12.
The control of the balloon controller 13 is started and the balloon is released.
When the resistance increases, the tension is weaker than the normal additional tension.
It is stored so that the applied tension is weak.

This will be described with reference to FIGS.

FIG. 2 is a map of the solenoid voltage control (tension control) stored in the control device 25 when the spinning bobbin 12 is changed into a cup, supplied to the winding position, and unwound until the yarn layer disappears. It is shown.

First, when all the yarns of the spinning bobbin 12 are unwound, the filler 14 detects the absence of the yarn and inputs this to the unit controller 21. At the same time, the clearer 16 also notifies the unit controller 21 that there is no yarn signal. input. The unit controller 21 changes the cup to change the bobbin, discharges the empty bobbin, and supplies a new spinning bobbin 12 to the winding position. The bobbin 12 whose cup has been changed is wound after the yarn is spliced (notched). When the winding is started, the unit controller 21 uses the electromagnetic solenoid 30 based on the map of FIG. A high voltage V1 is supplied to wind the yarn with a high tension, for example, for about 2 minutes (or a yarn layer thickness of 3 mm).
Control so that the take-up speed is constant
To prevent excessive spinning of the spinning bobbin 12
Winding the package P while maintaining the tension of the traveling yarn
After that, the voltage is lowered to the normal voltage V2 and winding is performed with the normal additional tension. If there is a yarn defect or breakage during winding, yarn knotting is performed.
At the time of resuming the winding, the same high voltage V1 is used for winding.
By taking the same, the running yarn tension is maintained in the same manner, and thereafter, the running yarn is lowered to the normal voltage V2 and wound up with the normal additional tension.

Next, when the yarn layer of the bobbin 12 is reduced and the control of the balloon controller 13 is started, the tension of the running yarn increases for a while, and the voltage is gradually increased from the normal voltage V2 to the voltage V3 until the remaining yarn disappears. Control to lower to By controlling in this manner, breakage of the traveling yarn can be reliably prevented.

FIG. 3 shows a map of the solenoid voltage control (tension control) stored in the control device 25 from the start of winding the package to the full package.

At the beginning of winding the package, the paper tube 18 is slightly separated from the drum 17 and the friction roller 20 is in contact with the drum 17 and is rotating, as described above. A high voltage V1 is supplied to the electromagnetic solenoid 30 from the stored map of FIG. 3 to control the yarn winding with a high tension, for example, for about 2 minutes, and then the winding is lowered to the normal voltage V2. When a yarn defect or breakage occurs during winding, yarn knitting (knotting) is performed. When the winding is restarted, the voltage is increased to the high voltage V1, then lowered to the normal voltage V2 and wound. .

A large number of bobbins 12 are supplied until the package becomes full. At this time, control is performed using the map shown in FIG.

Further, when the winding speed is set to a high speed, if the winding is attempted at a high speed from the beginning of the winding of the package, the yarn layer may be broken, and a high tension may be added to the beginning of the winding of the package. This is effective in preventing the yarn layer from collapsing. However, if the additional tension is set too high, yarn breakage may occur frequently due to an increase in release tension at the end of winding of the yarn supplying bobbin. On the other hand, at the beginning of winding the package,
By setting the additional tension value higher and setting the winding speed lower than when the package is of a normal size, it is possible to wind the yarn layer without collapsing. FIG. 4 shows the control of the winding speed and the tension.

In the above-described embodiment, the tension stored in the controller 25 controls the voltage value of the electromagnetic solenoid in the winding state of the package and the unwinding state of the bobbin. V2 and V3 may store various maps according to the winding speed of the package. For example, the tension may be changed according to the winding speed, and the voltage values may be set to various values. In addition, the rising and falling gradients may be set arbitrarily.

[0026]

In summary, according to the present invention, the control device stores the tension adjusted by the tension device, and
Controller rolls the package after the cup change
Controls when starting take-up or resuming take-up after piecing.
The unit applies an additional tension higher than the additional tension during winding.
Output to the controller and
By improving the shape and then returning to the normal additional tension,
Good take-up according to the take-up situation becomes possible.
When the remaining yarn of the spinning bobbin is low, the control device
From the normal additional tension during winding, the stored weak additional tension is
By outputting to the unit controller, the tension
The setting is such that the additional tension is weaker than the normal additional tension.
Adjusting the tension of the running yarn reduces the amount of remaining yarn.
This can prevent breakage of the yarn.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a tension map relating to a spinning bobbin stored in a control device according to the present invention.

FIG. 3 is a diagram showing a tension map relating to a package stored in a control device in the present invention.

FIG. 4 is a diagram showing a tension map relating to a winding speed during winding and an additional force stored in a control device in the present invention.

[Explanation of symbols]

 Reference Signs List 11 take-up unit 12 spinning bobbin 15 tension device 21 unit controller 25 control device

Claims (1)

(57) [Claims] 1. A winding unit, comprising: a spinning bobbin;
Apply tension to the running yarn in the middle of the yarn running path leading to the package
A tensioning device is provided to the winding unit.
Unit that controls the operation device and the winding unit
A controller for setting winding conditions is connected to the unit controller .
During the winding, the additional tension adjusted by the tension device
Remember the normal additional tension, and
At the start of take-up after a change or at the start of take-up at the time of splicing
Higher tension so that the tension is stronger than normal
Remembers force, reduces residual yarn of spinning bobbin and reduces unwinding resistance
Is larger than the above-mentioned normal additional tension.
The winding state is stored so that the applied tension is weak.
And stored in the above controller according to the unwinding situation of the spinning bobbin.
These tension control maps are used to determine the tension device
A tension device for an automatic winder, wherein the tension applied to the yarn is controlled . "