JPH07125932A - Splicer - Google Patents

Abstract

PURPOSE:To provide a seam having little fibers protruded from a yarn main body and a good outer appearance when yarn made of micro-fibers are pieced by providing an air stream control guide plate at an interval for the proper air stream quantities released from the slit end section openings of piecing nozzles. CONSTITUTION:The piecing nozzle section of a piecing splicer arranged on a winding device is provided with an outer block 14 and an inner block 15 coupled with it, and compressed air is ejected to the inner block 15 from an air passage 14a formed in the outer block 14. The front face of the inner block 15 is recessed into a V-shape, a slit 15a is formed at the depth, and piecing nozzles 1a, 1b are provided at the left upper section and the right lower section of the slit 15a. An air stream control guide plate 16 is fixed to the right upper face of the outer block 14 via a spacer 17 to cover the slit 15a from the side that the piecing nozzle 1b exists, and the air pressure applied to each yarn end is made optimum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splicer for splicing yarn, which is installed in a winding device such as a spinning machine or a winder.

[0002]

2. Description of the Related Art When a slab catcher detects a thread breakage or detects a thread defect during winding of a thread in a spinning machine or winder, the upper thread end and the lower thread end are attracted and clamped respectively. A splicer (special feature) that guides the yarns to separate untwisting nozzles and returns the twists to a state suitable for yarn splicing by the compressed fluid, draws the yarn ends into the yarn splicing nozzles and superimposes them, and performs splicing by the action of compressed fluid. Japanese Laid-Open Patent Publication No. 64-26742) is already known.

[0003]

SUMMARY OF THE INVENTION The splicer described above has guide plates at both ends of the slit of the yarn splicing nozzle for the purpose of suppressing the air flow from the slit to the openings at both ends and strengthening the swirling air flow in the slit to enhance the seam strength. However, when splicing a yarn made of extremely fine microfibers having a fineness of constituent fibers of 1 denier or less, the spouted fibers from the yarn body are conspicuous and the seam is inferior in appearance.

The present invention is intended to obtain a seam having a good appearance with less fibers flying out of the yarn body when the yarn made of microfiber is spliced.

[0005]

In order to achieve the above object, the splicer according to the present invention has an appropriate air flow rate that escapes from the slit end opening at a position that covers a part of the slit end opening of the yarn splicing nozzle. An air flow control guide plate is provided with a gap therebetween.

[0006]

In the splicer constructed as described above, when a yarn made of microfibers is spliced, the air flow rate from the slit of the splicing nozzle to the openings at both ends becomes an appropriate amount, and less fibers fly out from the yarn body. It is the best one to get a seam.

[0007]

EXAMPLE First, referring to FIGS. 3 to 5 which are cross-sectional views at the upper and lower untwisting nozzle positions, a yarn splicing operation will be described instead of a schematic description of the structure of the splicer.

The yarn shifting lever 10 turns to insert the upper yarn Y ₁ and the lower yarn Y ₂ into the yarn joining nozzle 1, and then the turning lever 4 operates to move the upper yarn Y ₁ to the clamp plate 5. Similarly, the lower thread Y ₂ is gripped between the clamp guide 6 and the clamp plate 7 (FIG. 3). And
The thread end of the lower thread Y ₂ is cut by the thread end cutter 8 at a position separated from the gripping position by a predetermined distance, and similarly, the upper thread Y ₁
The yarn end is cut by the yarn end cutter 9 (FIG. 3). At this time, the thread pressing lever 12 is pivoted to the non-acting position.

[0009] Then, jetted compressed air from the untwisting nozzles 2,3, tandem yarn handling lever 10 of the lower yarn Y ₂ to pivot in the direction of the arrow in FIG. 4 yarn end is untwisting nozzle 2 The yarn end of the upper yarn Y ₁ is sucked into the inside of the untwisting nozzle 3 and untwisted into a state suitable for yarn splicing (FIG. 4).

As shown in FIG. 5, the yarn pulling lever 10 is actuated again to guide each yarn end before and after the completion of the unraveling of each yarn end, and one of them becomes a stopper 13 different from the stopper 11. The yarn ends are swung to the abutting position, and the yarn ends are pulled out from the untwisting nozzles 2 and 3. After that, the yarn pressing lever 12 is further operated to swivel while guiding each yarn end, grasping each yarn end, and at the same time, compressed air is jetted from the yarn splicing nozzle 1 to entangle each yarn end and twist each other. It is added and the splicing is completed.

When the splicing is completed, the thread shifting lever 10 and the thread pressing lever 12 are separated from the upper thread Y ₁ and the lower thread Y ₂ .
The yarn that has been spliced out goes out of the splicing nozzle 1, and normal operation is resumed.

Next, the yarn splicing nozzle portion of the splicer of the present invention will be described with reference to FIGS. 1 and 2.

This yarn splicing nozzle is provided in the outer block 14
The inner block 15 fitted to the outer block 14 and the guide plates 16 fixed to the upper and lower surfaces of the outer block 14.

The outer block 14 is fixed to the central front portion of the splicer in the vertical direction. Inside it, the air passage 1
4a is formed, and compressed air is supplied toward the inner block 15 in the direction indicated by the arrow in FIG.

A front side of the inner block 15 is inserted into a V-shape, and a slit 15a is formed in the inner side thereof. A yarn splicing nozzle 1a for ejecting air counterclockwise is provided on the upper left side of the slit 15a.
A yarn splicing nozzle 1b for ejecting air clockwise is provided on the lower right side of a. Further, a space 15b is formed in the inner block 15 between the inner block 15 and the outer block 14 that is a fitting destination, and the air passage 14a of the outer block 14 communicates with the space 15b. Furthermore, in the inner block 15,
Air supply passages 15c and 15d for ejecting compressed air tangentially from the space 15b to the yarn splicing nozzles 1a and 1b are formed.

The guide plate 16 is provided with a spacer 17 on the right upper surface of the outer block 14 so as to cover the slit 15a from the side where the yarn splicing nozzle 1b is present below the inner block 15.
It is fixed by a set screw 18 via. The edge of the guide plate 16 on the upper yarn splicing nozzle 1a side is rounded so as not to damage the yarn to be guided. A guide plate 16 is also provided on the lower surface on the left side through a spacer 17.
Is installed.

The spacers 17 having different thicknesses can be selected and attached as required. If the spacer 17 is thickened, the distance between the inner block 15 and the guide plate 16 becomes large, and the air pressure inside the yarn splicing nozzle 1 becomes low. On the contrary, when the spacer 17 becomes thin, the inner block 1
5, the distance between the guide plate 16 and the guide plate 16 becomes small, and the yarn splicing nozzle 1
The air pressure inside a increases. When splicing yarns made of microfibers, the gap between the inner block 15 and the guide plate 16 is preferably about 1.6 mm.

Thus, the slit 1 of the yarn splicing nozzle 1
When a guide plate 16 is provided at a vertical position to cover a part of the end opening of the 5a and the distance between the guide block 16 and the inner block 15 is about twice as large as that in the conventional case, and the yarn made of microfibers is spliced, it acts on each yarn end in the splicing nozzle 1. The air pressure applied is optimal for obtaining a seam with less fibers protruding from the yarn body. That is, the yarn strength is high, and the yarn end is wound around the yarn body without protruding from the yarn body.

[0019]

Since the present invention is configured as described above, it has the following effects.

That is, when a yarn made of microfiber is spliced, it is possible to obtain a seam having a good appearance with less fibers flying out from the yarn body.

[Brief description of drawings]

FIG. 1 is a view of a yarn splicing nozzle portion of a splicer of the present invention, (1) is a plan view and (2) is a front view.

FIG. 2 is a diagram of an inner block of a yarn splicing nozzle portion of a splicer of the present invention, (1) is a plan view and (2) is a left side view.

FIG. 3 is an explanatory diagram of the operation of the splicer at the time of thread introduction and thread end cutting.

FIG. 4 is an operation explanatory view of the splicer during untwisting.

FIG. 5 is an operation explanatory view of the splicer at the time of yarn joining.

[Explanation of symbols]

 1 yarn splicing nozzle 1a lower yarn splicing nozzle 1b upper yarn splicing nozzle 14 outer block 15 inner block 15a slit 16 guide plate 17 spacer

Claims (1)

[Claims] 1. A splicer provided with an air flow control guide plate at a position that covers a part of the slit end opening of the yarn splicing nozzle with a gap so that the amount of air flowing out from the slit end opening is appropriate.