JPH0316848Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a yarn storage device for temporarily storing yarn that is continuously or intermittently supplied.

In recent years, the spinning speed has been increased in order to increase the productivity of the jammer, and the amount of yarn stored in the storage device during the splicing operation has increased significantly. Therefore, when the yarn splicing operation is completed and winding is resumed, the winding package is temporarily rotated at high speed to wind up the stored yarn, until there is no yarn in the storage device, and the yarn becomes normal. When the yarn detector installed at the suction port of the storage device is activated, the rotational speed of the winding package is decelerated from high speed to normal rotation speed and winding is started. Know how to continue.

However, in the method described above, in which the presence or absence of stored yarn is detected by a detector installed at the suction port of the storage device and the rotational speed of the winding package is reduced, the amount of winding varies depending on the elapsed winding time. Differences in inertia force occur, resulting in considerable variation in deceleration time. As a result, snarls or thread breakage occur. Therefore, to prevent snarling from occurring, the winding speed of the stored yarn should be increased from 10% of the steady winding speed.
There was a problem that the processing time was long because the range was set to increase by 20%.

The present invention was developed with the aim of solving the above-mentioned problems and providing a yarn storage device that can wind the stored yarn in a short time and does not cause snarls or yarn breakage. This is the result obtained.

(Means for Solving the Problems) That is, the present invention connects one end of a tube having a passageway with a flat cross section to a suction source, sucks the yarn from the other end of the open tube, and injects the yarn into the tube. The present invention provides a yarn storage device in which the tube having the passage with the flat cross section is bent into multiple stages, and yarn detectors are provided at the suction portion and the bending portion of the yarn, respectively. It is something.

(Example) The configuration of the yarn storage device of the present invention will be explained based on the drawings.

Reference numeral 1 designates the main body of the yarn storage device, which is bent at two places and has a passage 2 having a three-tiered structure, and one end of the passage 2 is connected to a blower (not shown) with a hose 3.
A thread suction port 4 is formed at the other end, which is open to the atmosphere. The cross-sectional shape of the passage 2 has two square yarn passages 5A and 5B, and these two yarn passages 5A and 5B are separated by a slit 5C whose width is narrower than this yarn passage and which is large enough to allow the yarn to pass through. It has a connected shape.
Further, folding members 8 and 9 are attached to the folding portions 6 and 7 of the passage 2. 10 is a first detector attached to the yarn entry side of the yarn suction port 4;
1 is a second detector attached to the exit side of the yarn.
12 is a third detector mounted on the yarn entry side of the folded portion 8; and 13 is a fourth detector mounted on the yarn exit side of the folded portion 8. Each of the above-mentioned detectors is activated when the yarn is attracted and comes into contact with the sensor, and becomes inactive when the stored yarn is exhausted and the yarn is no longer in contact with the detector.

An embodiment in which the yarn storage device of the present invention is applied to each splicing section of a spinning machine having a winding device is shown in FIG. 4, and its operation will be explained based on the figure.

The yarn 20 continuously supplied from the feed roller 14 is wound onto a winding bobbin as a package 16 via a winding drive drum 15. When yarn breakage occurs due to some reason, the yarn suction tube 17 of the automatic splicing machine is activated to take out the yarn from the spinning machine, introduce the yarn 20 to the feed roller 14 and the knotter 18, and remove the yarn. Hold the end with suction. On the other hand, the yarn unwound from the package 16 is introduced into the knotter 18 with the yarn end suctioned and captured by the suction nozzle 19. After both yarns are introduced into the knotter 18, the knotter 1
8 operates and ties the threads together in a short time. During the operation period of the knotter 18, the yarn 20 continuously sent out from the sending roller 14 is temporarily sucked into the yarn storage device. The yarn 20 sucked from the suction port 4 has a U-shape and is stored in the passage 2 through the yarn passages 5A, 5B and the slit 5C. At this time, when the amount of storage increases, it is bent through the bending portions 6 and 7 and further suctioned and stored on the negative pressure side. In such a state, each detector 10, 11, 12,
It is activated because the thread 20 comes into contact with the winder 13, and a signal indicating that the thread is present is sent to the drive device (not shown) of the winder.

When the above-described yarn splicing operation is completed and a winding start signal is input, the high-speed rotation circuit is activated, the winding package 16 is rotated at high speed, and the yarn 20 is wound up. As a result of this operation, the yarn 20 stored in the passage 2 is reduced, the third detector 12 and the fourth detector 13 installed at the bending section become inactive, and the signal is transmitted to the drive device. , the high-speed rotation circuit is switched to the medium-speed rotation circuit. Next, the stored yarn runs out and moves to the regular yarn path, and the first yarn installed at the suction port 4 is removed.
As soon as the detector 11 and the second detector 12 become inactive and their signals are sent to the drive device, the rotation circuit is switched to the normal rotation circuit and winding is continued.

In the above-described embodiment, two yarn detectors are provided at each of the yarn suction section and the yarn bending section, but it is sufficient to provide at least one yarn detector at each of the suction section and the yarn bending section. In this case, it is preferable to install it on the yarn entry side.

(Effects of the invention) As described above, the present invention connects one end of the tube having a passageway with a flat cross section to a suction source, suctions the yarn from the other end of the open tube, and stores the yarn within the tube. In such a storage device, the following effects can be achieved by bending the tube having the flat cross-sectional passage into multiple stages and providing yarn detectors at the yarn suction section and the bending section, respectively. can.

(1) By installing yarn detectors in the yarn suction section and the yarn bending section, the rotational speed of the winder can be controlled in three stages: high speed, medium speed, and steady speed, depending on the amount of yarn stored. This makes it possible to reduce the speed almost regardless of the amount of yarn wound. Therefore, with conventional methods, the winding speed at high speeds could only be increased to 10% to 20% of the steady winding speed, but now the winding speed is set to about 5 times the steady winding speed. This makes it possible to significantly shorten the processing time for stored threads.

(2) Since it is possible to detect the snarl generated within the storage device, it is possible to prevent the generated snarl from being drawn into the package.

(3) Since the detector is installed at the bend of the yarn and can detect the yarn without vibration, the presence or absence of the yarn can be reliably detected and malfunctions can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the yarn storage device of the present invention. 2 is a view in the direction of arrow A in FIG. 1, and FIG. 3 is a view in direction of arrow B. FIG. 4 is a schematic diagram of a device equipped with the yarn storage device of the present invention. 1: Main body, 2: Passage, 3: Hose, 4: Yarn suction port, 5A, 5B: Yarn passage, 5C: Slit,
6, 7: folding part, 8, 9: folding member, 1
0: 1st detector, 11: 2nd detector, 12: 3rd
Detector, 13: Fourth detector.

Claims (1)

[Scope of utility model registration request] In a storage device, one end of a tube having a passage with a flat cross section is connected to a suction source, and the yarn is stored in the tube by suctioning the yarn from the other end of the open tube. A yarn storage device characterized in that a tube having a passage is bent into a plurality of stages, and yarn detectors are provided at each of a suction section and a bending section of the yarn.