JPS593564B2 - Oyobi Souchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for uniformly applying an oil to yarn spun from a spinneret.

A technique has been adopted in which synthetic fibers such as polyester and polyamide are spun out from a spinneret and taken off at high speed to bring the yarn into a semi-stretched state and then wound.

In such a spinning method, it is extremely difficult to control the spinning tension and apply the oil uniformly because the yarn is spun at high speed, so when the yarn comes into contact with the downstream yarn guide, fuzz, fuzz, etc. Frequent thread breakage becomes a problem.

The present invention has been made in order to solve this problem, and when the yarns spun from the spinneret are bundled by a yarn guide that applies an oil while gathering the yarns, the yarns are formed. The single yarn path is determined by the guide (where θ is the angle between the perpendicular line from the spinneret and the single yarn path flowing down through the yarn guide, De is the single yarn denier, and ■ is the yarn speed m 7 mm). The first invention provides a method of bending the yarn at an angle θ as shown in FIG. The yarn guide and the yarn path regulation guide are arranged below the spinneret in this order, and the yarn guide and the yarn path regulation guide are provided so as to be freely advanced in opposite directions to each other and to a position beyond the perpendicular line, and the yarn guide and yarn guide regulation guide A second invention is a device that operates in conjunction with a thread guide.

This will be explained below based on the drawings.

1 and 2 are a sectional view and a perspective view for explaining the mechanism of the device according to the present invention.

In the figure, 1 is a spinneret, which is attached to the lower part of the melting device and has a number of orifices for spinning yarn.

2 is a spinning tube that cools and shapes the yarn spun from the spinneret 1.

3 is a cooling air blowing chamber provided in the spinning tube 2, and 4 is a filter or an air regulating device.

Reference numeral 5 denotes a yarn guide, which has an oil supply hole 5a that communicates with a fixed amount oil supply device 6 such as a gear pump through a pipe I, and has a guide groove 5 at its tip that collects the spun yarn.
b is provided, and the application hole 5a is opened in the yarn contacting surface to apply oil to the yarn, and also to apply oil to the shaft of the spinning tube 2 via a bearing 5c attached to the spinning tube 2. It is supported slidably in orthogonal directions.

Reference numeral 8 denotes a fluid pressure cylinder that advances the yarn guide 5 in a direction perpendicular to the axis of the spinning tube 2, and is fixed to a bracket 9 attached to the spinning tube 2.

A yarn path regulating guide 10 is provided below the yarn guide 5 and on the side facing the yarn guide 5, and is slidable in a direction perpendicular to the axis of the spinning tube 2 by a bearing 10a fixed to the spinning tube 2. Supported.

Reference numeral 12 denotes a lever that connects the yarn guide 5 and the yarn guide regulation guide 10, and is slidably supported around a pin 11 attached to the side of the spinning tube 2, and has elongated holes at both ends. 1
A pin 5d protruding horizontally from the thread guide 5 is connected to the elongated hole 12a, and a pin 10b protruding from the thread path regulation guide 10 parallel to the pin 5d is connected to the elongated hole 12b. has been done.

Note that 10c is a bifurcated thread path regulating portion formed at the tip of the guide 10, but the present invention is not limited to this.

Therefore, when the yarn guide 5 is advanced by the fluid pressure cylinder 8, the yarn path regulating guide is also advanced in conjunction with this.

Here, the yarn guide 5 and the yarn path regulating guide are capable of moving in opposite directions to a perpendicular line 13 extending from the center of the spinneret 1, sandwiching the perpendicular line 13 therebetween, and to a position beyond the perpendicular line.

Further, each single yarn F spun from the spinneret 1 by the yarn guide 5 is bent at an angle θ expressed by the following equation.

Here, θ is the angle between the perpendicular line drawn from the spinneret and the single yarn path flowing down through the yarn guide, De is the single yarn denier ■ is the take-up yarn speed m/im. In order to reduce the generation of fuzz due to ironing by the thread guide, θ needs to be 10 degrees or less.

The yarn spun from the spinneret 1 by the apparatus of the present invention having the above configuration is bundled by the yarn guide 5 while bending each single yarn by at least the above θ and applying an oil agent, and then by the yarn path regulating guide 10 Regulate and control roads.

According to the present invention, in order to bend the yarn spun from the spinneret by the angle θ and bundle it by the yarn guide, the tension between the spinneret and the yarn guide increases, and the yarn downstream of the yarn guide Combined with the fact that the effect of accompanying airflow can be greatly reduced due to convergence, it is possible to eliminate minute vibrations of the single yarn on the yarn guide, so-called pins and needles.

By eliminating the pinch, the yarn guide applies the lubricant uniformly to each single yarn, and as a result, even if the yarn comes into contact with the yarn path regulating guide after the yarn guide, no fuzz or yarn breakage will occur.

Moreover, according to the apparatus of the present invention, the yarn guide and the yarn path regulation guide can move forward in conjunction with each other, so that when starting spinning from the spinneret, both guides can be moved back without any hindrance to the spinning start operation. Moreover, by advancing both guides, the yarn can be bent at a predetermined angle by the yarn guide.

As a result, it becomes easy to apply the oil agent uniformly and also to regulate the spinning tension.

In addition, the thread guide and the thread path regulation guide can be connected by a mechanical mechanism such as a cam, in addition to the lever as in the embodiment, or by providing cylinders for both guides and interlocking them with each other using an electrical or pneumatic circuit. be.

Alternatively, there may be a slight time difference in the operation of both guides, so that the yarn guide is advanced first to converge the yarn, and then the yarn path regulation guide is advanced. The relationship between the bending angle θ and the yarn breakage rate when the yarn was taken off at /mi was as follows.

In this case, Example 2 of polyester yarn 75 De/fil was taken at a speed of 2.
The relationship between the bending angle θ at the yarn guide and the yarn breakage rate when the angle was changed from 500 m/mm to 3800 m/mm was as follows.

[Brief explanation of the drawing]

1 and 2 are a sectional view and a perspective view for explaining the mechanism of the device according to the present invention, in which 1 is a spinneret, 5 is a yarn guide, 10 is a yarn path regulation guide, 6 is an oil supply device, 13 is a perpendicular line drawn from the center of the spinneret.

Claims (1)

[Scope of Claims] 1. When the yarns spun from the spinneret are bundled by a yarn guide configured to bundle the yarns and apply an oil agent, the path of the single yarns constituting the yarns is determined as described above. A method for applying a spinning oil agent, which is characterized by bending a guide at an angle θ expressed by the following formula. Here, θ is the angle Dc between the perpendicular line drawn from the spinneret and the single yarn path flowing down through the yarn guide, is the single yarn denier, and ■ is the take-up yarn speed m/R2. A yarn guide having a lubricant application hole communicating with the lubricant supply device in the converging portion and a yarn guide regulation guide are arranged in this order below the spinneret, and the yarn guide and the yarn guide regulation guide are removed from the spinneret. A spinning lubricant application device characterized in that it is provided so as to be able to advance freely in opposite directions to a position beyond the perpendicular line by sandwiching the lowered perpendicular line, and a yarn guide regulating guide is operated in conjunction with the yarn guide.