JPH0620367U - Winder winding tension control device - Google Patents

Abstract

(57) [Summary] [Purpose] Even when the remaining yarn amount of the yarn supplying package becomes small, it is possible to suppress the increase in winding tension. [Structure] A cylindrical balloon controller 1 having a narrowed upper part that gradually descends from a position surrounding the upper part of a bobbin B according to the amount of remaining yarn of a yarn supply package, a tenser for applying tension to the yarn being wound, and a residual yarn. It is composed of a sensor 3 for detecting that the amount is about 30%, and an actuator for receiving the detection signal and gradually reducing the pressure of the tensor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a winding tension control device for a winder that rewinds a spun yarn on a winding package.

[0002]

[Prior art]

 The winding tension of the yarn by the winder is considerably large due to the occurrence of large ballooning when the spun tube yarn is unwound. By the way, the cylindrical balloon controller is gradually lowered from the position surrounding the upper part of the bobbin as the winding progresses, so that the size of the ballooning during the winding is constantly maintained below a certain value, and as a result, the winding tension is reduced. This has already been proposed by the applicant.

[0003]

[Problems to be solved by the device]

 Although the tension control by the above-mentioned balloon controller has produced favorable results, the winding tension rises when the remaining amount of spun tube yarn becomes low, which causes yarn breakage during winding. This is a cause of winding streaks in the winding package. In particular, the winding tension increases in proportion to the square of the winding speed, which is one of the obstacles to speeding up the winder.

An object of the present invention is to provide a winding tension control device for a winder, which can suppress an increase in winding tension even when the amount of remaining yarn in a yarn supplying package decreases.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the winding tension control device for a winder according to the present invention is a cylindrical balloon controller with a narrowed upper part that gradually descends from the position surrounding the upper part of the bobbin according to the remaining yarn amount of the yarn supplying package. , Consisting of a tensioner that applies tension to the yarn being wound, a sensor that detects when the remaining yarn amount is about 30%, and an actuator that receives the detection signal and gradually reduces the pressure of the tensor. Is.

[0006]

[Work]

 In the winder winding tension controller configured as described above, the balloon controller is gradually lowered to keep the balloon ballooning small until the remaining yarn amount in the yarn supplying package reaches about 30%, and the winding balloon is kept small. The take-up tension is maintained at an almost constant value. When the winding progresses and the remaining yarn amount of the yarn supplying package reaches about 30%, the sensor operates to output a detection signal, and the pressure of the tensor is gradually reduced.

[0007]

【Example】

 A winding tension control device for a winder according to the present invention will be described with reference to FIGS.

The winding tension control device of this winder comprises a balloon controller 1 arranged at a position surrounding the head of the bobbin B of the spun tube yarn, and a tensor for applying tension to the yarn Y unwound from the bobbin B. 2, a sensor 3 for detecting the progress of unwinding of the yarn Y, and an actuator 4 of the tensor 2 in response to a command from the sensor 3 to send a control voltage shown by a solid line in FIG.

As shown in FIG. 1, the balloon controller 1 has a substantially cylindrical shape, the inner diameter of the lower opening facing the head of the bobbin B is slightly larger than the outer diameter of the bobbin B, and the inner diameter of the upper opening is lower. It is smaller than the opening and is small, and is fixed to the tip of an operating rod 5a of an actuator 5 such as an air cylinder via a mounting rod 6. When the upper opening is narrowed in this way, even if a small ballooning occurs in the balloon controller 1, almost no ballooning occurs after leaving the upper opening.

As shown in FIG. 2, the tensor 2 includes a fixed portion 2a in which a plurality of protruding walls are provided upright at equal intervals, and a swinging portion 2b having a plurality of finger portions that mesh with the protruding walls. Tension is applied by bending the thread passing through the zigzag. Further, the yarn tension applied to the yarn Y can be changed by changing the degree of proximity of the swinging portion 2b to the fixed portion 2a, that is, the bending degree of the yarn path. A base portion of the swinging portion 2b is swingably supported by the support shaft 7, and a rod 8 extending toward the actuator 4 is swingably attached to a portion extending to the opposite side of the support shaft 7. Other tensors include rotating discs facing each other, but the form is not limited as long as the yarn tension can be adjusted.

The sensor 3 is composed of a phototransistor or the like that detects reflected light of the light emitted toward the head of the spun tube yarn, and is attached to the balloon controller 1. In this case, when the yarn Y is unwound and the peripheral surface of the bobbin B is renewed and exposed, the amount of light received by the sensor 3 changes, and each time the sensor 3 outputs a signal to the actuator 5, the operating rod 5a is moved to a predetermined position. The balloon controller 1 and the sensor 3 are lengthened, and the balloon controller 1 and the sensor 3 are sequentially lowered as shown by the alternate long and short dash line in FIG. This operation is repeated until the remaining amount of the spun tube yarn reaches 30%, but thereafter, even if the balloon controller 1 is lowered, the tension control is not connected, so the actuator 5 does not operate and the sensor 3 outputs it. The signal is sent to the actuator 4. In addition to this, a sensor may be provided on the operation rod 5a of the actuator 5, and the detected object may be placed at a position corresponding to 30% of the remaining amount of spun yarn.

The actuator 4 is composed of a rotary solenoid or the like, and a rod mounting plate 9 is fixed to a rotation shaft 4 a thereof, and the rod 8 is rotatably mounted on the rod mounting plate 9. A voltage as shown in FIG. 3 is applied to the actuator 4 during winding of the yarn. The higher the voltage, the larger the rotation angle of the rotary shaft 4a, and the larger the tension of the yarn Y applied by the tensor 2. Become.

FIG. 3 will be described. The vertical axis represents the voltage applied to the actuator 4, and the horizontal axis represents the winding time when winding the spun tube yarn wound on one bobbin B into the winding package. The high voltage (24V) at the beginning is for compensating for the low tension during low speed operation at the beginning of winding. The next flat portion is the reference voltage B (20 V), and is set to continue until time t ₃₀ when the remaining amount of the spun yarn is 30%. As described above, a signal is sent from the sensor 3 to the actuator 4 at this point. When this signal is sent, the voltage applied to the actuator 4 gradually decreases to a predetermined value (3 V) for a predetermined time (several tens of seconds) as preset, as shown in C.

FIG. 4 is a graph showing the relationship between the winding tension and the winding time in the winder equipped with the balloon controller 1. The solid line indicates the tension control of the present invention in which the voltage applied to the actuator 4 is gradually decreased to a predetermined value for a predetermined time at the time t ₃₀ when the remaining amount of the spun yarn is 30%, and the winding tension is gradually decreased by the sensor 3. It depends on the device. The case without such tension control is shown by the one-dot chain line, and this difference is significant. That is, when the winding speed of the yarn is 1500 m / min, the maximum winding tension is greatly reduced from the conventional 30 g to 25 g of the present invention, and this difference is increased as the winding speed of the yarn is increased. growing.

[0015]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

That is, even when the remaining amount of the spun tube yarn is small, the increase of the winding tension can be suppressed to the minimum, the yarn breakage occurs during winding, and the winding streaks are formed in the winding package. It is less likely to come in. These effects are more remarkable as the winding speed increases.

[Submission date] May 20, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005]

[Means for Solving the Problems]

In order to achieve the above object, a cylindrical balloon controller that gradually descends from the position surrounding the upper part of the bobbin according to the remaining yarn amount of the yarn supplying package, and a tension is applied to the yarn being wound that can control the additional tension. And a sensor for detecting that the remaining yarn amount has decreased to a predetermined amount, and a control device for gradually reducing the additional tension of the tensor in response to the detection signal.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a winding tension control device for a winder according to the present invention.

FIG. 2 is a perspective view of a tensor.

FIG. 3 is a graph showing the relationship between the voltage of the tensor actuator and the winding time.

FIG. 4 is a graph showing the relationship between winding tension and winding time.

[Explanation of symbols]

 1 Balloon Controller 2 Tensor 3 Sensor 4 Actuator B Bobbin

[Procedure amendment]

[Submission date] May 20, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Scope of utility model registration request

[Correction method] Change

[Correction content]

[Scope of utility model registration request]

Claims (1)

[Scope of utility model registration request] 1. A cylindrical balloon controller having a narrowed upper portion that gradually descends from a position surrounding the upper portion of a bobbin according to the remaining yarn amount of a yarn supplying package, a tenser for applying tension to the yarn being wound, and a residual yarn. A winder winding tension control device including a sensor that detects that the amount has reached about 30% and an actuator that receives the detection signal and gradually reduces the pressure of the tensor.