JPS6397582A - Automatic winder - Google Patents

Abstract

PURPOSE:To prevent the cut of yarn and slaffing by installing a tension sensor for detecting the tension of a traveling system onto a winding unit and controlling the tension of the yarn on the basis of the variation signal of the tension of the yarn. CONSTITUTION:A yarn Y pulled out from a bobbin 1 is taken up onto a package 7 on a traverse drum 6 through a ballon breaker 2, tension device 3, yarn defect detecting head 4, and a tension sensor 5. The pressure due to the tension of the yarn is converted to a voltage in the tension sensor 5, and the increase and decrease of the tension is detected. The variation signal in increase and decrease is sent into a controller 9, and the tension of the yarn is varied by the control of the tension device 3. Therefore, the tension in the taking-up of the yarn onto the package 7 is kept constant, and cut of yarn and sluffing can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic wine gourd equipped with a tension device that senses tension fluctuations in a yarn drawn out from a spinning bobbin and controls the tension of the yarn.

[Conventional technology]

Spinning bobbins produced on spinning machines, especially ring spinning machines,
The yarn is supplied to the wine goo and rewound into a package with a predetermined amount and shape.

That is, the yarn on the spinning bobbin that is supplied to a predetermined position of the winding unit of each wine goo is pulled upward in the axial direction of the bobbin, and the yarn that is separated from the yarn layer runs while ballooning and passes through a tension device etc. It is wound into a package while being traversed by a traverse device.

[Problem that the invention seeks to solve]

Now, as winding by the wine goo progresses and the yarn layer on the spinning bobbin decreases, the reduced yarn layer is wound only around the lower end of the winding tube, and the yarn is pulled out from there. The yarn travels upward while wrapping around the surface of the winding tube, and the separation angle from the yarn layer decreases, and tension is applied to the traveling yarn due to friction between the yarns and contact with the winding tube. There are cases where thread breakage occurs. This phenomenon occurs when the running speed of the thread is 2.
This phenomenon is even more likely to occur in high-speed wineries reaching speeds of 1,000 rfl/min.

Alternatively, the yarn drawn out as the yarn layer decreases runs while contacting the yarn in the lower layer, so the yarn around the bobbin is pulled out all at once, or the yarn is formed in wine goo as the tension fluctuates. This may cause so-called tiered wrapping, annual ring wrapping, chrysanthemum wrapping, etc., to occur in packages that are used for packaging, so-called sluffing, and package collapse.

May cause thread breakage.

Alternatively, the tension is low at the beginning of the thread waste of one spinning bobbin, and the thread to be wound on the package is wound with low tension, and the pressure of the thread layer wound on top of it causes a low tension thread layer. may bulge out on the edge of the package. Since several to ten or more spinning pobbins are normally used to obtain one package, the above-mentioned bulges appear at regular intervals, resulting in a package with a poor shape, so-called annual winding.

The occurrence of such thread breakage and defective packages reduces the operating rate of the wine goo and impedes productivity. This invention is made for the purpose of solving such problems 〇 [A means to solve problems] This invention detects the tension of the driving thread for each windig unit. and a tension device that controls the yarn tension based on the yarn tension fluctuation signal generated by the tension sensor, and by controlling the yarn tension, the fluctuation in yarn tension is solved.

[For production]

A tension device that uses a tension sensor to detect changes in the tension of the yarn drawn out from the spinning pobbin, and when the tension changes from a set level, controls the yarn tension based on the signal emitted from the tension sensor. is operated to control the thread tension to be constant.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a winding unit that constitutes a wine goo.

The yarn Y drawn out from the spinning bobbin 1 is a balloon breaker.
2. A tension device 3, a yarn defect detection head 4 such as a slab catcher, and a tension sensor 5 are passed through and the yarn is wound into a package 7 which is rotated many times by a traversing drum 6.

8 is a yarn splicing device, and 9 is a control device that receives a tension change signal obtained by the tension sensor 5 and issues a command to the tension device 3 to control the tension of the yarn Y.

As the tension sensor 5 used in the present invention, for example, one to which a piezoelectric element as shown in FIGS. 2 and 3 is applied is advantageously used. Reference numeral 10 denotes a voltage element, and a guide 11 for the running yarn Y to come into contact with the voltage element 10.
The piezoelectric element 10 is fixed and positioned on a base 12 fixed on a frame 4a of a yarn defect detection head 4 such as a slab catcher. Further, the yarn contacting portion of the guide 11 is located at the innermost side of the yarn running slit 13 of the yarn defect detection head 4 such as a slab catcher.

Further, it is preferable that the tension sensor 5 is installed at a bending point in the thread running path in a case where the tension can be detected at all times, and in FIG.

Embodiments of the tensioning device 3 are shown in FIGS. 4 to 6.

In the example shown in Fig. 4, pieces PIP2 are arranged radially on the edge of the plate surface.
A pair of discs 14a and 14b each having a large number of discs attached thereto are configured to face each other in an interlocking manner so that the respective pieces are positioned alternately, and the tension of the thread Y running in a zigzag pattern is applied to the shaft 15. The idling roller 16 and the roller 1
6 and a solenoid 17 which is provided to move forward and backward in the axial direction, and the solenoid 17 is placed close to the roller 16 to provide resistance to the rotation of the roller and prevent it from making one rotation.

The tension of the running yarn Y is sequentially controlled by increasing the tension or weakening the tension by separating and releasing the restraint.

FIG. 5 shows a second embodiment. Two disks 18a, one of which is fixed and the other pressed against it.

In the tensor 18 of the type that clamps the yarn Y between the tensioners 18b, the movable desk 18a is swingably supported by the support arm 20, and the swinging rod 19 swings according to the forward and reverse rotation of the motor M; A spring 21 is suspended by locking both ends to the support rod 20 of the disk 18a, and the swinging rod 19 is swung by forward and reverse rotation of the motor M to increase or decrease the biasing force of the spring 21. The tension of the running yarn Y is sequentially controlled by changing the pressing force between the two disks 18a and 18b.

In the example shown in FIG. 6, the side faces have corrugated concave and convex surfaces 22 that engage with each other, and the top of the combined wave is provided with two short rods 23 that protrude perpendicularly to the wave direction. , - plate 24a
, 24b, and a drive mechanism 25 that moves the gate plate 24a back and forth by the rotation of the motor M to increase or decrease the engagement of the waveform uneven surface. The tension of the running yarn Y is sequentially controlled by changing the contact angle with the short rod for the yarn Y that is traveling in a bending manner.

When the tension of the running yarn Y increases, pressure is applied to the piezoelectric element 10 on the tension sensor 5, causing mechanical strain, and this strain causes a change in voltage. That is, as shown in FIG. 2, the tension F1 generated by the running yarn presses the piezoelectric element IO with a force F2, so F2
= The pressure caused by FISinθ is converted into voltage, and an increase in tension can be detected from the difference in voltage between it and a preset standard tension.

Such a change in voltage difference is immediately sent as a signal to the control device 9.
The control device 9 is actuated by a signal emitted from the device, and in the case of a tension device as shown in FIG. 4, the solenoid 17 is moved away from the roller 16 to reduce resistance to the rotation of the roller 16. In the case of a tension device as shown in the figure, the urging force of the spring 21 is weakened to weaken the clamping force of the disks 18a and 18b against the running yarn Y, and in the case of a tension device as shown in FIG. This reduces the tension of the thread by relaxing the zigzag bend in the Y. If the tension of the running yarn Y decreases, the voltage element 10 on the tension sensor 5 can also sense the voltage difference force generated, so it can be detected by the signal generated from the control device 9. The tensioning device 3 operates in the opposite manner to that described above to increase the tension of the thread.

Although the tension device 3 has been described using the above three examples, other types of tension devices may be used as long as they are configured to instantly change the tension of the running yarn based on the signal issued from the control device 9. There is no problem even if it is.

〔Effect of the invention〕

Since the yarn tension control device in the winder of the present invention has the above configuration, it is possible to control the tension of the running yarn by immediately transmitting the yarn tension fluctuation signal generated by the tension sensor to the tension device. As the winder progresses, the yarn layer on the spinning bobbin decreases.

The thread being pulled out travels upward while wrapping around the surface of the winding tube, the separation angle from the thread waste decreases, and tension is applied to the running yarn due to friction between the threads and contact with the winding tube. The system quickly detects this and relieves the tension to prevent yarn breakage and sluffing, and also prevents yarn drifting toward the center of the package due to low tension at the beginning of winding, and step winding and annual ring winding due to tension fluctuations. , chrysanthemum, etc. can be prevented from occurring. And this effect is especially true when the running speed is 200
This is particularly noticeable in high-speed winders such as 0 m/min, and since the tension can be controlled without reducing the running speed of the yarn, it can have a great effect on improving the operating rate of the winder and improving productivity.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a winding unit showing an embodiment of the device of the present invention, Fig. 2 is a side view showing an example of the mounting state of the tension sensor, Fig. 3 is a plan view of the same, and Fig. 4 is the tension device. 5 is a perspective view showing another example of the above device, and FIG. 6 is a perspective view showing still another example of the above device. Y... Thread, M... Motor, 1... Spinning bobbin,
3... Tension device, s... Tension sensor, 6... Traverse drum, 7... Package, 8...
Control device, 10-... Voltage element, 16... Roller,
17... Solenoid, 18 a, 18 b-...
Disk, 19--Swinging rod, 20--Supporting rod, 21
- Spring, 23... Short rod, 24a, 24b.
・Gate board. Figure 4 Figure 6 Figure 6

Claims (1)

[Claims] An automatic winder equipped with a tension sensor that detects the tension of a traveling yarn in each winding unit, and a tension device that controls the yarn tension based on a yarn tension fluctuation signal generated by the tension sensor.