JPH033867A - Individual type cut yarn processing device - Google Patents

Abstract

PURPOSE:To improve the production yield and realize an economically advantageous state by installing the yarn cut detectors in the equal number to the number of yarns and a yarn cutter and a suction aspirator on the downstream side of the cooling wind for one cooling chimney. CONSTITUTION:Yarn cutting devices 4 in the equal number to the number of yarns are installed at the position close to an oil feeding device in the vicinity of a cooling chimney 2 or the position close to the first convergence point 5, directly under a spinneret 1. The yarn cutter 4 may be any type permitting the cutting of yarn, and the well-known or an article on the market can be used as it is. Then, one suction aspirator 6 for one unit of the cooling chimney 2 is installed on the downestream side of the cooling wind blown out from the filter 3 of the cooling chimney 2. In this case, the need of a special strong suction force for the suction aspirator 6 for sucking the cut yarn in free fall is obviated. Further, a yarn cut detector 11 is installed between the goddet rollers 9 and 10 and a taking-up machine 12. Then, the cut yarn detector on the market can be used as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an individual type yarn breakage device installed attached to a synthetic fiber melt spinning device.

[Conventional technology]

Conventionally, in the melt spinning of thermoplastic single-draw synthetic polymers such as polyamide and polynisdel, cooling air is blown onto the yarn spun from spinning LJ gold, and after the yarn is cooled and solidified, it is oiled with an oil supply device and wound up. It is being done.

In recent years, in order to improve productivity, a method has been adopted in which a plurality of yarns are processed simultaneously using a cooling chimney or a winder. On the other hand, the frequency of yarn breakage tends to increase due to the speeding up of spinning speed and the production of high value-added 11'U yarn, and maintaining yield and basic unit has become an important issue. ing.

In the case of multi-filament spinning in which multiple threads are spun simultaneously, if a breakage occurs in one of the threads, the breakage will spread to adjacent threads, increasing production loss.

JP-A-50-136413 discloses a thread breakage detector,
A yarn cutting device for multiple yarns that includes a yarn suction device and a yarn cutting device has been proposed.

However, this proposal is a method that draws multiple yarns to one place when yarn breakage occurs, and cuts and sucks all the yarns together, and does not contribute to improving yield or basic unit. .

On the other hand, Japanese Patent Application Laid-open No. 127576/1983 provides a device for each yarn to be equipped with a winding detector, a cutter, a take-up device, and a yarn breakage detector for each yarn. Disclosed. However, in this device, the cutter and take-up device are installed relatively close to each other on the same yarn path, so in high-speed spinning with relatively high spinning tension or spinning equipment with many thread paths, take-up may fail. In the end, all threads were often broken.

In addition, in the conventional technology, since breakage could only be detected in yarn units, the single fibers of the multi-filament yarn were first broken, and the cut single fibers fell near the cooling chimney, causing damage to other fibers. It was also not effective in the case of a phenomenon that hinders the running of the yarn and develops into yarn breakage.

[Problems to be Solved by the Invention] The purpose of the present invention is to solve the problems of the prior art described in 2. By performing suction treatment, other yarns can be spun until the full threading time, and losses due to yarn breakage can be minimized. Furthermore, by treating single fiber breaks before they occur, the number of times the fibers break can be reduced.

[Means for Solving the Problems] Zunawaji, the individual type yarn breakage processing device according to the first invention cools and solidifies a plurality of synthetic fibers in a cooling chamber and a knee, and then cools and solidifies them in a lubricating device. After refueling, in a yarn breakage processing device of a spinning take-up device that takes off the spinning yarn in a take-up device, a yarn breakage detector of the same number as the number of yarns is provided between the take-up machine and the body j-1-, Install the same number of yarn cutting devices as the number of yarns near the first chimney and in contact with the oil supply device or the first convergence point, and install one yarn cutting device on the leeward side of the cooling air for one cooling chimney. It is characterized by the provision of a suction aspirator.

The second invention is characterized in that the single fiber breakage detector according to the invention is disposed at a position close to the suction asevil of the apparatus according to the first invention.

[Example] Hereinafter, embodiments of the individual type yarn breakage processing apparatus of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory side view of an individual type yarn breakage processing device according to the first invention. Point 5
The same number of thread cutters 4 as the number of threads are provided at positions close to the threads.

This thread cutter may be any device capable of cutting yarn, and any known or commercially available device may be used as is.

The installation location is preferably close to the oil supply device or the first convergence point 5, and more preferably directly above the oil supply device or the first convergence point. If the threads are lowered and leak from the oil supply device or the first convergence point, the cut threads between them will catch on the surrounding thread paths and parts, leading to suction failure. In addition, if it is too far in the opposite direction, the diameter of the traveling yarn bundle becomes large and the opening angle of the yarn cutter must be increased, which requires special measures. There is also the disadvantage that it becomes difficult to determine the position of the thread due to the effect of thread searching.

One suction aspirator 6 is provided for each cooling chimney downwind of the cooling air blown out from the filter 3 of the cooling chimney 2. In the present invention, since the cut yarn falls freely and is sucked, a special suction force of the suction aspirator is not required. Therefore, the suction aspirator used may be a known suction aspirator, but Preferably, it is wide [210], and more preferably one in which the suction [1] is modified into a rectangular or elliptical shape parallel to the blowing surface of the cooling chimney, increasing the degree of freedom in the falling position of the cut yarn. 2 suction aspirators for each cooling unit 1 and 2
If more than one suction aspirator is installed, a bridging phenomenon occurs in which the same thread is suctioned by two or more suction aspirators, and suction becomes impossible due to clogging, which is undesirable.

A yarn breakage detector 1] is provided between the godet rolls 9, 10 and the winding machine 2. As this yarn breakage detector, a commercially available yarn breakage detector can be applied as is. FIG. 2, which is particularly preferable because a photoelectric yarn breakage detector is capable of non-contact detection, is an explanatory side view of an individual type yarn breakage processing device according to the second invention. vessel 15
This single fiber breakage detector is installed as shown in Fig. 5 (,
A commercially available phototube-type photoelectric switch is installed at a distance that covers almost the entire width of the cooling chimney, and is installed close to the suction aspirator.

The structure may be such that the occurrence of single fiber breakage is detected by the broken single fibers falling freely and passing through or staying in the sensing area of the photoelectric switch.

The higher the sensitivity of the photoelectric switch, the earlier it will be possible to detect single fiber breakage, but since the occurrence of malfunctions due to surrounding low-molecular substances and thread waste will increase, it is necessary to use a switch or timer to prevent malfunctions. It is preferable to use activation prevention together.

Also, depending on the brand of yarn, cold air conditions, etc., it may come into contact with adjacent traveling yarns during free fall, or the free fall position may move away from the suction aspirator, so if necessary, install the vertical partition plate 16 or guide plate. 14 can also be used.

The guide plate 14 may be a flat plate such as an aluminum plate, and a cutout or the like may be provided depending on the situation around the mounting position. The pick-up angle must be such that the cut yarn or filament will naturally slide down.

It is preferable that one end is in the flow direction rather than the oil supply device, and if it is below, it will be contaminated by oil mist and the cut thread will be difficult to slip.

An example of the vertical partition plate 16 is shown in FIG. This vertical partition plate is installed to prevent the cut yarn from coming into contact with the adjacent running yarn when it falls naturally, but it may be installed depending on the spacing of the spinnerets, spinning conditions, cold air conditions, etc. It can be installed only when necessary. When installing the spinneret, it is necessary to have a function to prevent the yarn from coming into contact with each other, as well as cleaning the spinneret surface and
Is it necessary to consider the workability of &J work, etc.?

[For production]

In carrying out the present invention, as shown in FIG. 2, the thermoplastic synthetic polymer discharged from the spinneret 1 is first cooled and solidified by cold air blown from the cooling chimney 2, and then oiled by the oiling device 5. Goderol after 9.10
After that, it is wound up by a winding machine.

If one of the plurality of threads breaks during winding, the thread breakage is first detected by the thread breakage detector 11.

Almost simultaneously with the detection, the thread cutting device 4 for the corresponding thread and the suction aspirator are activated. At this time, an alarm simultaneously notifies the operator of the occurrence of thread breakage. The yarn cut by the yarn cutting device falls freely while being pushed downwind by the cold air.

The thread that has passed through the guide plate and fallen near the suction aspirator is
The yarn is sucked into the suction aspirator, and other yarns are continuously wound up until a predetermined full threading time.

When a single fiber breakage occurs, the broken small fibers fall near the single fiber breakage detector 15 due to the cold air and free fall. At the same time as the single fiber breakage detector detects the single fiber breakage, the suction aspirator is activated to suck up the falling single fibers, and an alarm alerts the operator to the occurrence of the single fiber breakage. Thereafter, the operator can insert and return the insertion.

[Effects of the Invention] The present invention improves the suction success rate by employing a method of suctioning the broken yarn when it occurs in multi-filament spinning, as it falls by cold air and natural fall. It became possible to significantly increase the

Naturally, if the success rate of suction increases, the production yield will increase by relieving the breakage of other yarns. The effect becomes more pronounced as the number of yarns spun and wound in the same machine increases, and as the number of yarn breakages increases, the brand and conditions increase.

Furthermore, it is sufficient to install one suction aspirator per cooling chimney, and strong suction force is not required, making it possible to reduce the amount of compressed air, which is also economically advantageous.

In the second invention, by disposing a single fiber breakage detector, it becomes possible to suction the single fiber breakage, but in this case as well, as in the first invention, the falling part is detected by cold air and natural falling. This was made possible by using a method called suction.

By performing suction treatment on single fiber breaks, yarn breakage can be prevented. This is because the single fiber being sucked can be directly inserted into the running yarn, and the work of attaching the yarn during yarn breakage can be completely omitted. This has the effect of shortening the equipment downtime and also shortening the work time.

As a result, not only will yield be improved, but product quality will be easier to maintain and manage due to reduced workload, and machine interruptions will be reduced, leading to smoother operation of automated machinery, etc. It has a remarkable effect on production.

[Brief explanation of drawings]

FIG. 1 is an explanatory side view of an individual type yarn breaking processing device showing an embodiment of the first invention, FIG. 2 is an explanatory side view of an individual type thread breaking processing device showing an embodiment of the second invention, Figure 3 is a front view of the vicinity of the cooling chimney in Figure 2, Figure 4 is a vertical partition plate,
FIG. 5 is a perspective view showing an example of a single fiber breakage detector. 1: Spinneret, 2: Cooling chimney, 3: Filter, 4
: Thread cutter, 5. Oil supply device, or number: 1 First convergence point, 6: Suction aspirator, 7: Waste yarn box, 8: Spinning cylinder, 9.10:
Godet roll, 11: Thread breakage detector, 12: Touch roll of winding machine, 13. Vanology during winding, 14: Guide plate,
15:tA fiber breakage detection 2:), 16 vertical partition plate, 1
7: Light emitting part, 18: Light receiving part, 19: Cut single fiber.

Claims (1)

[Scope of Claims] 1. In a yarn breakage processing device of a spinning winding device in which a plurality of synthetic fibers are cooled and solidified in one cooling chimney, oiled in an oil supply device, and then spun and taken up in a take-up device. ,
A number of thread breakage detectors equal to the number of threads are provided between the winding machine and the godet roll, and a number of thread cutters equal to the number of threads are provided near the cooling chimney and close to the oil supply device or the first convergence point. ,1
This is an individual type yarn breakage processing device that has one suction aspirator installed downwind of the cooling air from the base cooling chimney. 2. In a yarn breakage processing device of a spinning winding device, in which a plurality of synthetic fibers are cooled and solidified in one cooling chimney, oiled in an oil supply device, and then spun and taken up in a take-up device,
A number of thread breakage detectors equal to the number of threads are provided between the winding machine and the godet roll, and a number of thread cutters equal to the number of threads are provided near the cooling chimney and close to the oil supply device or the first convergence point. ,1
An individual type yarn breakage processing device comprising one suction aspirator provided on the leeward side of the cooling air with respect to the base cooling chimney, and a single fiber breakage detector disposed in a position close to the suction aspirator.