JPS6052063B2 - Pneumatic splicing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention introduces two gaps into an air injection nozzle, and applies a swirling air flow generated by the air jetted from the air nozzle to both ends, thereby creating a thread using an air nozzle knot that joins both ends together. This article relates to a method for obtaining a good spliced part in a splicing method.

The thickness of the yarn splicing section made by ordinary knotters such as Weavers and Fisherman is about three times the thickness of the yarn, which causes the yarn to get caught in subsequent processes such as knitting. However, in the air nozzle knotter, the thickness of the seam is at most twice the thickness of the yarn, and this problem is greatly improved. The present invention improves the yarn splicing method of this air nozzle knotter to obtain a good yarn splicing area that was not possible with ordinary knotters such as Wivers and Fisherman knotters. The present invention will be explained in detail below with reference to the drawings. 1, 2, and 3 show the method of the present invention, and FIGS. 4, 5, and 6 show the conventional method.

1 is an air nozzle, and the spaces YU and YL are inserted into the thread insertion hole 3 through the V-shaped slit 2.

An air jet pipe 4 is opened in the tangential direction of the thread insertion hole 3, and air jetted from the jet pipe 4 into the hole 3 generates a swirling air flow within the hole 3. The figure shows the third twisting process in which swirling airflow is applied to the Z-twisted yarn.
Figure 6 shows the case where the yarn is spliced with S twist on the upper side and Z twist on the lower side.

In the present invention, as shown in FIGS. 1 to 3, two margins are aligned to form a loop, that is, a ring shape is formed around the nozzle 1, and the swirling air flow of the nozzle 1 is applied to this ring. Figures 4 to 6 where swirling airflow is applied without forming
The advantages of the present invention will be detailed in comparison with the conventional method shown in the figure.

In the conventional method, due to the swirling air flow, the two wings rotate on their own axis and revolve in the same direction.

In this case, the amount of twist is large, but the two yarns are only twisted together while being separated from each other, so they easily come off, the yarn strength is low, and fuzz is likely to occur at the end of the yarn joint. As a result, the yarn itself becomes untwisted, and this is compounded with the increase in yarn tension that accompanies a large amount of twist, making it easy for the yarn to break at the S-twisted part.Also, since the yarn is twisted together as described above, there is little entanglement of the fibers. There are disadvantages such as the inability to shorten the seam length because the thread strength is inferior.
On the other hand, in the present invention, the rotation of the thread is prevented by the formation of the loop, and the thread only revolves within the hole 3 while receiving vibrations from side to side, as shown in FIG. Therefore, in the present invention, the amount of twist in the upper layer does not increase, the yarn tension does not increase, and the amount of untwisting of the yarn itself at the S-twisting part is small, so it does not easily blow off, and the swirling air does not increase. It is possible to strengthen the flow and increase the strength of the yarn, and the twist of the yarn itself is easily moved up and down from the nozzle 1 due to vibration, so the disassembly and entanglement of the fibers between the two yarns are performed well, making it possible to join the yarn. Even in the center of the section, the two threads are easily intertwined into one, and the good intertwining of these threads increases the strength of the thread, making it possible to shorten the length of the spliced part and making the joint strong and relatively stable in length. However, it has many advantages not found in the past, such as the ability to obtain a constant seam. In the case of mechanical operation, the thread gripping members 5 and 6 may be moved in the direction of the arrow as shown in FIG.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the method of the present invention, FIG. 2 is a sectional view of the same,
Figure 3 shows the seam part generated by the same method,
FIG. 4 is a perspective view showing a conventional method, FIG. 5 is a cross-sectional view of the same, and FIG. 6 is a view showing a joint made by the same method. 10III0 nozzle.

Claims (1)

[Claims] 1. A pneumatic yarn splicing method characterized by forming a loop and applying a swirling air flow to two aligned yarn ends.