JPH02231372A - Tension adjusting method and device thereof and doubler - Google Patents

Abstract

PURPOSE:To arbitrarily further automatically adjust tension by detecting a fed thread for its tension compared with a preset value and controlling a speed of a motor rotating a disk of a tension adjuster device giving the tension to the fed thread. CONSTITUTION:A fed thread Y, drawn out from a fed thread package, is nipped in the running by a disk tensioner 5 adjusting nip force and rewound by applying tension, but the tension, applied to the thread, can be adjusted by suitably rotating a disk 17. Then the thread tension is detected for its change by a thread tension detecting device 12 provided in a position near the thread feed package from the position setting up the tensioner 5, and by a value of the change suitably rotating a disk rotating motor 15 normally and reversely, the desired thread tension is obtained by adding tension to or subtracting it from the fed thread Y. While in case of using a device for a doubler, each doubled fed thread Y uniformly obtains its tension, further arbitrary tension can be set in accordance with a thread kind or the like.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method and device for adjusting thread tension during thread winding, and a thread doubling machine. κ Conventional technology]

In this type of conventional technology, as shown in FIG. 4, each yarn Y pulled out from yarn supply packages 61 and 62 is guided by guides 63 and 84, and then passed through a tensor 65 that adjusts the tension of the traveling yarn. ．． At 66, a predetermined tension is applied. Thereafter, this yarn Y is passed through the yarn breakage detection feeler 67.
After passing through 68, the yarn is doubled by a convergence guide 69, and is traversed by a traversing device to be evenly wound onto a winding package 71 which rotates in pressure contact with a winding drum 70. Although FIG. 4 shows an example of a yarn doubling machine, almost the same technique was used in the case of single yarn as a means for applying tension to the yarn to be wound.

[Problem to be solved by the invention]

In the conventional technology described above, the tension of the running yarn must always be maintained appropriately for each type of yarn, and a constant tension must always be applied regardless of tension fluctuations during unwinding. However, the tension adjustment effect has not always been sufficient. In addition, in the conventional yarn doubling machine as described above, it is necessary for the two yarns to be doubled with the same tension and wound up, but when the yarn feeding packages have different diameters, Since the unwinding tensions are different, the tensions of each yarn supply are different, and this tension adjustment effect is insufficient. As a result, the strength of the combined yarns decreases, and even after the yarns are twisted, q-twist and wisteria-twist occur, resulting in a decrease in strength. In order to solve the above-mentioned drawbacks, this invention arbitrarily and automatically adjusts the tension.

[Means to solve the problem]

In order to eliminate the drawbacks of the above-mentioned conventional technology, Masaaki Moto's first technology uses a tension detector to detect the yarn feeding tension and compare it with a set value to control the motor rotation speed. , a method is used in which a disc of a tension adjustment device is rotated by the motor to apply arbitrary tension to the yarn feed, and in the second invention, a tension detector for detecting the tension of the yarn feed, and a disk are used. The device includes a tensioner that applies tension to the yarn feed between the disks, and a motor that is mounted on the disk and whose rotation is controlled by a control device that outputs a comparison value between the output of the tension detector and the output of the setting device. In a third invention, the tension device of the second invention is used in a doubling machine. κ effect] The yarn pulled out from the yarn supply package is nipped by a disc tensioner with an adjusted nipper while it is running, applying tension and being wound up. By appropriately rotating the disc, the tension applied to the yarn is increased. can. Therefore, a yarn tension detection device installed at a position closer to the yarn supply package than the position where the tensor is installed detects fluctuations in yarn tension, and the disk rotation motor is rotated in the forward or reverse direction depending on the fluctuation value, thereby applying tension to the yarn. Add or subtract to obtain the desired thread tension. Further, when used in a yarn doubling machine, the tension of each fed yarn to be doubled becomes equal, and any tension can be set depending on the yarn ladder and the like. κ Embodiment An embodiment of the present invention will be explained based on an example of a thread dowel as shown in FIGS. 1 to 3. In FIG. 1, each yarn feed from yarn feed packages 1 and 2 is guided by a guide 3.4 and then by a tension sensing device 12.4.
13 and then a predetermined tension is applied by tensors 5 and 6. After passing through feelers 7 and 8 for detecting yarn breakage, the fed yarn Y is combined by a convergence guide 9, and is traversed by a traversing device against a package 11 that rotates in pressure contact with a winding drum 10 to be evenly wound. taken. The means for applying a predetermined tension consisting of the tension detecting device 12 and the tensor 5 on the left side of the figure and the means for applying a predetermined tension consisting of the tension detecting device 13 and the tensor 6 on the right side of the figure have the same configuration. Therefore, FIG. 2 shows only the main part of the device on the left side, and this device will be described below. The thread Y from the guide 3 passes through the guide roller 22 on the fixed bin.
．． The roller 2 of the tension detection device 12 provided between 23
Can be multiplied by 4. The roller 24 is constantly applied a force to the left in the figure by the spring 25, and when the tension of the thread Y is large, it moves to the right in the figure against the force of the spring 25, and when the tension is small, it moves to the left in the figure. Move to. This displacement becomes a displacement of the movable core 27 in the coil 26, and an output based on the displacement of the movable core 27 is obtained from the coil 26 according to the well-known principle of a tension detector. A tensor 5 is provided on the travel trajectory of the yarn Y that has passed through the tension detection device 12. The tensor 5 includes a first disk 17 and a second disk 18 that nip the yarn between pressure-contacting opposing surfaces.
A predetermined tension is applied to the thread by appropriately selecting the needle. A shaft 30 of a reversible motor 15 is fixed to the back surface of the first disk 17. A flange 32 of a rubber holder 31 is fixed to the back surface of the second disk 18, and a circle m of the holder 31 is fixed to the back surface of the second disk 18.
A pusher 34 is fitted inside al533 and can slide freely on the shaft 35. 36 is a screw to prevent it from coming off. The shaft 35 is fixed to a mounting flange 37 and a spring 38
The second disk 18 is constantly pressed in the right direction in the figure via the pusher 34 and the holder 31. The thread Y is held between the first disk 17 and the second disk 18 by the pressing force. The motor 15 inputs the output from the coil 26 of the tension detection device 12 to the control device ffi39, and
The rotational direction and rotational speed of the motor 15 are controlled by the output of IilJl8 and 39. In this control device W139, as shown in FIG. 3, left and right tension detection devices 12. The voltage corresponding to the tension in the coil 26 of 13 is applied to the amplifier 40. Amplify with 41. This voltage and current is connected to each inverter 42. 43, and the inverter controls the left and right induction motors 15 based on the input value.
, 1θ to change the frequency (F) of the power output. Inverter 42. 43 corresponds to a predetermined tension (V/
The value of F) is input, and the frequency of the power from the power sources 45 and 46 is changed so that the value is equal to the value from the coil 26. The induction motors 15, 1θ rotate at a rotation speed based on this frequency; when the frequency increases, the rotation speed increases, and when the frequency decreases, the rotation speed decreases. It is also possible to include a known circuit that lowers the rotational speed and rotates the motor in reverse when a predetermined tension is still not obtained even in a stopped state.

【Effect of the invention】

The present invention has the above-mentioned structure, and the tension of yarn feeding can be adjusted to an arbitrary value, and that value can be automatically maintained. In addition, in a white thread machine equipped with this tension adjustment @ position, the tension of each fed yarn to be doubled is equalized, the strength of the combined yarns is equalized, and the tension after twisting can be increased. can. Furthermore, by adjusting the setting device, it is possible to easily set an arbitrary tension depending on the yarn type and count.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention, FIG. 1 is an overall schematic diagram when the present invention is used in a doubling machine, and FIG. 2 is a side view showing a partial cross section of the tension adjustment device. , FIG. 3 is a block diagram for controlling the motor, and FIG. 4 is an overall schematic diagram showing a conventional doubling stitch. 2nd Figures 1, 2...Cheese, 3, 4...Balloon guide,
5, 6... Tencer 7, 8... Feeler, 9.
...Focusing guide, 10... Winding drum, 11.
... Package, 12.13... Tension detection device, 14... Yarn supply, 15. 16...
Motor, 17...first disk, 18...second disk, 27...tension detector, 29...holding body, 37...control device Patent applicant Murata Machine Co., Ltd. agent Patent attorney Katsutoshi Ohno Agent Patent Attorney Reiko Ohno

Claims (1)

[Claims] 1. The tension of the yarn feeding is detected by a tension detector, the rotation speed of the motor is controlled by comparing it with a set value, and the disk of the tension adjustment device is rotated by the motor, thereby feeding the yarn. A tension adjustment method characterized by applying arbitrary tension to a thread. 2. Consisting of a tension detector that detects the tension of the yarn feed and a tensioner that applies tension to the yarn feed between discs, the rotation is controlled by a control device that outputs a comparison value between the output of the tension detector and the output of the setting device. A tension adjusting device characterized in that the disc is equipped with a motor that adjusts the tension. 3. A yarn doubling machine comprising the tension adjusting device according to claim 2 installed in each yarn path.