JPH0348129Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a yarn take-up device for aligning a large number of yarns, such as undrawn yarn subtows, and storing them in a can.

[Prior art] Conventionally, in the production of raw cotton for staples, undrawn yarns spun from a large number of spinnerets are aligned, then stored in cans using a pulling device such as a gear nip to form subtows, and subsequently used in the next process. A widely used method is to bundle a large number of sub-tows together, then stretch and cut them.

FIG. 2 is a schematic view of a conventionally used undrawn yarn sub-tow take-off device, and FIG. 3 is an enlarged side view of the main part thereof. In FIG. 2, an undrawn yarn 2 spun from a spinneret 1 is applied with an appropriate oil agent by an oil agent roll 3, passes through a godet roll 4, and is sequentially drawn together with another undrawn yarn spun in the same manner. After that, in order to further improve the cohesiveness of the single yarn, the oil agent is showered by a shower device 5, and is taken up at a predetermined take-up speed by a capstan roll 6 composed of two or more rolls. It is nipped by the wheel 8 and stored in the tow can 10. The tow can 10 is installed on a traversing device 11 so that it can be traversed at an appropriate speed. However, with such conventional equipment, when the bundled undrawn yarn sub-tow has a large denier, it is difficult to store it in a can, and when a large number of stored sub-tows are bundled and drawn, there are relatively few sub-tow entanglements that occur at the creel part. However, if the denier D of the undrawn yarn sub-tow is as thin as 25,000 D or less, not only will it be difficult to store the sub-tow in the tow can, but the entanglement of the sub-tow at the drawn creel will increase, resulting in poor operability. There was a problem that the condition became extremely bad and even production became impossible.

For this reason, in the conventional apparatus shown in FIG. 2, an attempt was made to provide an ejector capable of high-speed fluid treatment below the gear wheel 8. However, although this method does not have many storage problems, the fluid treatment causes the single yarns of the sub-tow 9 that were bundled at the gear wheel 8 to come apart, and it is difficult to reduce the entanglement at the drawing creel. It turns out that it doesn't contribute.

In addition, measures such as squeezing the sub-tow in front of the capstan roll 6 and increasing the amount of oil applied by the shower 5 have been tried to improve the focusing performance, but in this case, although they were effective in improving the focusing performance, When the working environment deteriorated due to the scattering of oil, and the denier of the sub-tow was as thin as 25,000 D or less, there was no significant effect on evenly storing the sub-tow in the tow can.

While investigating the above-mentioned problems in the conventional gear take-off device as shown in Fig. 2, the inventors of the present invention found that the above-mentioned tow defects tend to occur as the denier of the undrawn yarn sub-tow becomes thinner, such as 25,000 D or less. It has been found that the phenomenon of uniform storage is derived from uneven airflow caused by the gears of the gear wheel rotating at high speed.

That is, in the conventional gear take-off device as shown in FIG. 2, the gear wheel 8 is driven in a cantilever manner. Therefore, a gap 20 is formed between the machine panel 19 provided on the drive shaft side and the take-up gear wheel 8 as shown in FIG. An accompanying airflow (arrow A) is generated. Therefore, the airflow generated by the gear of the gear wheel 8, that is, the particularly problematic downward airflow (arrow B), is accelerated along with the airflow in the gap 20 indicated by the arrow A. As a result, it leans toward the machine panel 19 side. Also airflow (arrows A, B)
As described above, this creates a faster and stronger flow than the airflow flowing through the open area on the opposite side of the machine panel indicated by arrow C in FIG. For this purpose, the fine denier tow that is sent out from the gear wheel 8 and shaken down into the tow can that is being traversed in the front and back direction (left and right direction in Fig. 3) is descending on the machine panel side causing a rapid flow. Under the influence of air currents (arrows A and B), more of it is blown down towards the machine panel. As described above, conventional collection devices have only been able to store items unevenly and unevenly.

[Problems to be solved by the invention] The present invention solves the above-mentioned problems in a yarn take-up device that arranges a large number of yarns and stores them in a can, and provides a yarn take-up device with good operability. The purpose is to

[Means for Solving the Problems] The yarn take-up device of the present invention that achieves the above-mentioned object has the following configuration.

That is, the yarn take-up device of the present invention is a device in which a large number of yarns are pulled together and then stored in a can by a take-up gear wheel. This yarn take-up device is characterized in that it is provided with a focusing oil tank for converging a large number of aligned yarns, and is also provided with an airflow control cylinder in the shape of a lower constriction directly below the take-up gear wheel.

[Function] Hereinafter, the yarn take-up device of the present invention will be described in detail with reference to the drawings, but it goes without saying that the present invention is not limited to the following embodiments.

FIG. 1 is a schematic diagram of a yarn take-off device according to the present invention.

In FIG. 1, the sub tow 7 taken up by the capstan roll 6 shown in FIG.
After applying the oil agent in step 2, the gear wheel 8
The tow can 1 is taken over by the airflow control tube 13
It is stored in 0.

On the other hand, the oil applied to the sub-tow is supplied from an adjustment tank (not shown), and excess oil is controlled by a commonly used return system such as overflow. In addition, in case the lubricant scatters badly when applying the lubricant, in the device of the present invention shown in Fig. 1, a box-shaped lubricant scattering prevention cover 14 is provided to seal around the gear wheel. . However, at this time, the cover 14 may be opened at least in part of the vertically opening/closing lid provided on the opposite side of the machine panel in order to prevent turbulence from occurring in response to the airflow generated by the rotation of the gear wheel. It is preferable that the cover 1 is provided with a hole, and also has a function of collecting the scattered oil and returning it to the adjustment tank.
It may be added to 4. It should be noted that the cover 14 may be provided as appropriate in cases where there is a large amount of oil/water adhering and the oil agent is frequently scattered, such as when high-speed take-up is performed.

In the yarn take-off device of the present invention constructed as described above, the aligned sub-tows are placed at a position closer to the tow can, that is, just before the gear wheel 8, than in the conventional device shown in FIG. Since the oil agent is applied by the oil agent application tank 12 located therein, it is possible to accurately apply the target oil/water content of about 50 to 70% as desired. This first
In the apparatus according to the embodiment of the present invention shown in the figure, the oil agent application tank 12 is an example of the shower and overflow type, but it is not necessarily limited to this type, and the present invention can also be used with only the overflow type or only the shower type. The above-mentioned target oil/water content can be fully achieved. In addition, in the case of a combination type in which the oil bath is showered from the top and is run through an overflow type oil bath as in this example, it is necessary to run closer to the liquid level of the oil bath than in the case where only the overflow type is used. Since the above-mentioned target oil-moisture content can be achieved, the amount of excess oil carried out by the traveling sub-toe is small, and therefore the environment is not degraded due to the scattering of excess oil carried out more than necessary. Less is more preferred. With the above configuration of the present invention, it is possible to apply the targeted oil moisture of about 50 to 70%, and therefore, the apparent density, which is a guideline for the storage condition of sub-tow cans, is about 0.46 to 0.6. (The conventional one is 0.41 to 0.45), and the convergence of the sub-tow is sufficient to contribute to reducing sub-tow entanglement.

Note that the above-mentioned configuration, that is, the configuration in which the oil supply tank is provided immediately before the gear wheel, may not be sufficient to fully achieve all the objects of the present invention. That is, as mentioned above, uniform storage in tow cans is also an important issue, but it is generally difficult to achieve this point. Therefore, in the present invention, as shown in FIG. 1, in addition to the oil supply tank 12, a fine denier (2.5
An airflow control cylinder 13 with a lower constriction shape is provided to create a straight downward airflow without being substantially influenced by the airflow that flows toward the machine panel side, which is an obstacle, when taking yarn (less than 10,000D). With this configuration, the sub-tow that has been given sufficient convergence is uniformly shaken off and stored in the tow can while maintaining its convergence. It is. Therefore, the subtow entanglement at the creel part of the subtow taken by the device of the present invention is 3 to 5.4 times/hr/can,
This value is significantly reduced compared to 1/5 to 1/2 of the conventional method.

In the device of the present invention shown in FIG. 1, the lubricant application tank 12 is configured to be held by a slidable arm (not shown), so that the position can be freely adjusted along the yarn path. However, it is best to place it as close to the gear wheel 8 side as possible, and the distance from the nip point of gear wheel 8 is
Preferably, it is within 1500mm.

In addition, the airflow control tube 1 installed at the bottom of the gear wheel
3 is placed as close to the gear wheel as possible without touching the gear wheel 8, so that it is less affected by the aforementioned uneven airflow on the machine panel side, and the distance is from the nip point of the gear wheel to the entrance of the airflow control tube 13. It is desirable that the distance between the two ends is 10 to 100 mm, and it is also desirable to provide the above-mentioned gap at a position away from the gap. Positioning can be freely adjusted by sliding the bracket to which the airflow control tube 13 is attached.

4a and 4b are a plan view and a side view, respectively, of the airflow control tube 13 shown in FIG. 1. FIG.
As shown in Fig. 4b, the airflow control cylinder 13 is located at a lower part (tow can side) than at an upper part (gear wheel side) 15.
By narrowing 16, the airflow can be controlled favorably and the falling speed of the sub-tow is reduced, so there is no phenomenon of the sub-tow hitting the sub-tow that has already been stored, and there is almost no tow bending when shaking off, so the amount of oil applied can be adjusted, for example. , even when it is increased to about 60%, it has good storability, almost no subtow entanglement occurs in the creel, and stable operating conditions can be obtained.

In the state shown in FIG. 1, the area ratio between the upper and lower portions of the airflow control cylinder 13 is preferably 5:1 to 3:1 in terms of tow storage. In addition, the notch 17 for threading is
It is sufficient that the length is 5 to 20 mm, which does not interfere with threading.In addition, as shown in FIG. A groove or stepped portion 18 may be provided to prevent unnecessary oil from flowing into the tow can. Furthermore, in Fig. 1, a cylindrical airflow control tube is shown as an example, but it may also be one with a rectangular cut surface in the horizontal direction, as long as airflow controllability and ease of attachment to the bracket are taken into consideration. For example, a shape that is symmetrical front to back and left and right is preferably adopted.

[Effects of the invention] According to the invention as described above, in a device for aligning spun multi-filament yarns such as undrawn yarns and then storing them in a can, a collecting oil application tank is installed immediately before the take-up gear wheel. In addition, the unique structure of installing a lower constriction-shaped airflow control tube directly under the gear wheel makes it easier to take even relatively thin yarn, store it in a can, and reduce the amount of yarn in the creel. A yarn take-up device is provided that exhibits excellent effects in terms of yarn standability.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a yarn take-off device according to the present invention, Fig. 2 is a schematic diagram of a conventionally used yarn take-off device, and Fig. 3 is an enlarged view of the main parts of the conventional device shown in Fig. 2. The side views, FIGS. 4a and 4b, are a plan view and a side view of an airflow control cylinder having a lower constriction shape used in the device of the present invention. 2: Undrawn yarn, 4: Godet roll, 6: Capstan roll, 8: Gear wheel, 10: Tow can, 12: Oil supply tank, 13: Air flow control cylinder, 1
7: Notch for threading.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a device for pulling together a large number of threads and then storing the large number of threads in a can using a take-up gear wheel, the pulling gear is placed immediately before the take-up gear wheel. A yarn take-up device characterized in that a collection oil tank is provided for converging a large number of aligned yarns, and an airflow control tube in the shape of a lower constriction is provided directly below the take-up gear wheel. (2) The yarn take-up device according to claim (1) of the utility model registration, characterized in that the focusing oil tank is of a shower and overflow type. (3) The yarn take-up device according to claim (1) of the utility model registration, characterized in that a notch for threading is provided in a part of the airflow control tube.