JPH02138076A - Yarn ending device - Google Patents

Abstract

PURPOSE:To obtain a yarn ending device suitable for fat yarns in particular by arranging auxiliary nozzles applied with a compressed fluid at both side portions of a joint on both sides of a yarn ending nozzle. CONSTITUTION:Yarns YP and YB on both sides of a yarn ending nozzle 2 are clamped by yarn clamping devices 11 and 12, a yarn handling lever 10 is operated, yarns are cut while a rod 31 is moved and levers 34 and 35 are rotated clockwise using a support shaft 33 as a fulcrum, yarn ends YP1 and YB1 are untwined by untwining nozzles 5 and 6 to the state suitable for yarn ending, then the yarn handling lever 10 is again operated, the yarn ends YP1 and YB1 are guided and extracted through the untwining nozzles 5 and 6, and untwined yarn ends are overlapped together at preset positions of the yarn ending nozzle 2 and auxiliary nozzles 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yarn splicing device for splicing spun yarn by the action of compressed fluid.

[Conventional technology]

A yarn 1 in which two yarn ends are joined by applying compressed fluid to the overlapping yarn ends! The device is already known from Japanese Patent Publication No. 60-55611.

This yarn splicing device inserts two yarn ends into a yarn splicing nozzle with the yarn ends facing in opposite directions, and then blows compressed air into the yarn splicing nozzle to connect the two yarn ends. The overlapping parts of the parts are subjected to vibration, entanglement, heating, etc.
The thread is spliced at the end of the thread.

[Problem to be solved by the invention]

The above-mentioned yarn splicing device is suitable for ordinary cotton yarns and long fiber yarns, but it is possible to splice large-count yarns made of short fibers, so-called woolen yarns, especially in wool. At both ends of the seam, the end portions of the yarn ends were not wrapped around each other, resulting in long corner-shaped portions that were separated from the parent yarn, resulting in an insufficient seam in terms of appearance and yarn strength.

Such woolen yarns are often used for knitting, and the corner portions get caught in the thread holes of knitting needles, causing yarn breakage.

It is an object of the present invention to provide a yarn splicing device particularly suitable for the above-mentioned woolen yarns or other large-count yarns.

[Means to solve the problem]

In the present invention, auxiliary nozzles are arranged on both sides of the yarn splicing nozzle to apply compressed fluid to both ends of the seam.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 and 2, the yarn splicing device (1) basically has the following features:
Yarn splicing nozzle (2), auxiliary nozzles (3) (4) placed on both sides of the yarn splicing nozzle (2), and untwisting nozzles placed on both sides of the auxiliary nozzles (3) (4). (5)(6
), thread pressing device (7), thread cutting device (8) (9), thread shifting lever (10), and thread clamping device (11) (
12) Consists of:

The yarn splicing device (1) is installed in an automatic wine goo, and the yarn on the bobbin side (YB) and the yarn on the package side (YP) are sucked and held by a relay pipe (13) and a suction mouth (14) and guided. Ru.

The yarn splicing nozzle (2) has a yarn splicing hole (15) and a sleeve (16) into which the yarn end on the bobbin side and the yarn end on the package side are inserted so as to face in opposite directions.
The splicing hole (15) is formed as shown in the figure, and the splicing hole (15) is provided with blow-off holes (17) and (18) for blowing out compressed air. In this embodiment, as shown in Fig. 3, both yarn ends (YB) are positioned at the innermost position relative to the sleeve (16).
(YP) The injection hole (
17) (18) are shown drilled at two different positions in the direction of the central axis of the nozzle hole (15). Of course, various types of nozzles such as a type that produces a swirling flow, a type that has one injection hole, etc. are applicable.

Furthermore, auxiliary nozzles (
3) (4) is installed with a slight gap. That is,
Auxiliary nozzles (3) and (4) are provided at a certain distance (S) from the yarn splicing hole end faces (2a) (2b) of the yarn splicing nozzle (2), and the air flow inside the yarn splicing nozzle (2) is and the airflow inside the auxiliary nozzles (3) and (4) do not directly interfere with each other. The auxiliary nozzles (3) and (4) have almost the same shape and size as the yarn splicing nozzle (2), and have yarn splicing holes (19
) (20), slits (21) (22) extending throughout the hole for inserting the yarn into the yarn joining hole, and compressed air injection holes (23) (2) that open tangentially to the inner peripheral surface of the nozzle.
4) was formed. Above injection hole (23)
The swirling directions of the air streams ejected from (24) are opposite to each other, and promote winding of the tip of the yarn end around the parent yarn.

As shown in the first figure, outside the auxiliary nozzles (3) and (4), tubular untwisting nozzles (5) and (6) are arranged which suction and untwist the yarn ends by the action of compressed air. Untwisting nozzle (5)
Further outside of (6) are guide grooves (25) (26) (27) (2B) into which the threads guided by the relay pipe (131 and suction mouth (14)) are individually inserted.
Guide plates (29) and (30) are arranged.

Inside the guide grooves (25) and (28) into which the thread ends of the thread on the suction mouth side (YP) and the thread ends of the thread on the relay pipe side (YB) are inserted are multi-threads (YP) (Y
B) Cutters (8) and (9) are arranged to cut the yarn, and the yarn ends cut by each cutter (8) and (9) are sucked into the untwisting nozzle (5H6).

In addition, there are guide grooves (2
6) A clamp device (12) <11) for gripping the polyfilament (YB) (YP) is disposed on the outside of (27). On the side of the yarn splicing nozzle (2) is a yarn (Y) guided by a relay pipe (13) and a suction mouth (14).
B) A yarn shifting lever (10) is arranged to pull (YP) onto the yarn splicing device (1) and insert the poly yarn into predetermined positions in the guide grooves (25) to (28).

The yarn splicing operation of the above device will be explained next.

In Fig. 8, the yarn (YP) on both sides of the yarn splicing nozzle (2)
(YB) is clamped by the thread clamp devices (11) and (12), the thread shifting lever (10) is operated, and the rod (31) in Fig. 2 is moved by the arrow (
32), and the thread cutting is performed with the levers (34) and (35) pivoting clockwise around the support shaft (33).

In addition, the thread shifting lever (10) and the thread cutting device (8) (
9), the thread presser device (7) is on standby at the position (7a) shown in two-dot chain line in FIG.

Next, as shown in FIG. 9, the yarn end untwisting nozzles (5) (6)
) When the thread end (YPI) (YBI) is suctioned by
(YBI) is sucked deep into the untwisting nozzle and untwisted into a state suitable for splicing by air injection as described above.

In addition, the suction timing of the above-mentioned untwisting nozzles (5) and (6) is the cutting device! ! [(8) It is desirable to start immediately before the yarn is cut by (9).

That is, when the yarn is cut, tension is applied to the yarn by the suction action of the suction mouth and the relay pipe, so the yarn ends freed by the yarn cutting are scattered, and the yarn ends are scattered through the untwisting nozzle (5) ( This is because the yarn end suction by the untwisting nozzle may not be performed due to the opening position of 6) being away from the stomach.

The supply of compressed air to the untwisting nozzle is performed by switching a valve using a solenoid (not shown).

The yarn end (YPI) is
) When (YBI) is untwisted to a state suitable for splicing, the thread shifting lever (10) operates again as shown in Figure 10, guiding the thread ends (YPI) and (YBI) to each other and untwisting them. The untwisted yarn ends are pulled out from the twisting nozzles (5) and (6) and passed through the splicing nozzle (2) and the auxiliary nozzle (3) (
4) Overlap at a predetermined position within.

At this time, one lever (35) of the thread shifting lever (10)
At the same time, the thread presser (7) rotates to a position where it contacts the stopper (37), and the thread presser (38) (39)
) is activated and rotates to the state shown in Figure 10, and the space between the auxiliary nozzle (3) and the lever (35), and the auxiliary nozzle (4)
and the lever (34).

The yarn end (YPI) (YBI) that was inserted into the nozzle holes of the untwisting nozzles (5) and (6) by the yarn shifting lever (10> and the yarn presser device (7)) is the yarn of the yarn splicing nozzle (2). Joint hole (15) and hole (1) of auxiliary nozzle (3) (4)
9) (20) The threads are drawn inward and touch each other's thread ends (Y
The position is set in the state shown in Fig. 3 with PI) (YBI) in contact with each other.

Next, after setting the yarn ends, the yarn splicing nozzle (
Yarn splicing is performed by the action of compressed air injected from the compressed air injection holes (17) and (18) in 2).

Simultaneously or with a slight delay when twisting is performed with the yarn splicing nozzle (2), compressed air is injected from the compressed air injection holes (23) and (24) shown in Figure 4.5 of the auxiliary nozzles (3) and (4). , the thread splicing is completed.

That is, the auxiliary nozzle (3) and the auxiliary nozzle (4) simultaneously spray compressed air, and the nozzles (3) and (4)
) is about 0 to 0.1 seconds slower than the compressed air injection. In addition,
This delay time setting can be made arbitrarily.

Therefore, due to the fluid action of the mass yarn splicing nozzle (2), a portion of the yarn ends are mixed, combined, and twisted to form a seam, and the yarn ends can also be sufficiently wrapped around the parent yarn.
A clean seam with no corners is formed.

Note that it is preferable that the auxiliary nozzles (3) and (4) spray the compressed air in opposite directions. The jetting direction can be determined in relation to the twisting direction of the yarn, but it is not limited to what is shown in the drawings and can be set arbitrarily.

The seam thus obtained is shown in FIG. In addition,
Figure 6 shows the seam (Jl) of woolen yarn produced by the conventional device, and the corner portion (Xi) (X2) that protrudes long toward the seam surface.
However, at the seam (J2) in Figure 7, the yarn end is the parent yarn (
YP) (YB) The appearance has also been greatly improved. Furthermore, the actual measured values for seam strength are shown below.

[Wool/Rayon Nm5F [Effects of the Invention] As described above, according to the present invention, corners are generated even in large-count spun yarns, especially large-count yarns with relatively short fiber lengths such as woolen yarns. It is possible to obtain a seam with good appearance and strength retention without any problems.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing an embodiment of the device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional plan view showing an example of a yarn splicing nozzle, and Figs. 4 and 5 are auxiliary nozzles. A cross-sectional plan view showing an example, FIG. 6 is an external view of a seam made by the conventional device, FIG. 7 is an external view of a seam made by the device of the present invention, and FIGS. 8 to 10 are the views shown in FIG. 1. It is a schematic diagram explaining the yarn splicing process by the yarn splicing device. (1) Yarn splicing device (2) Yarn splicing nozzle (3) (4) Auxiliary nozzle

Claims (1)

[Scope of Claims] In a yarn splicing device equipped with a yarn splicing nozzle that splices yarn ends together by the action of compressed fluid, an auxiliary nozzle that applies compressed fluid to both sides of the seam on both sides of the yarn splicing nozzle. A thread splicing device characterized in that a thread splicing device is arranged.