JPS62136483A - Yarn binding device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for joining yarns that connect the terminal end and the starting end of two multifilament yarns, particularly fine denier and low filament count yarns such as nylon filaments. Regarding equipment.

(Prior Art) As a conventional yarn joining device, there is one described, for example, in Japanese Patent Application No. 149768/1983 filed by the present applicant.

This device includes a pair of clamping means installed at a predetermined distance from each other and capable of clamping the overlapping ends of the two yarns, and a pair of clamping means installed between the clamping means to clamp the overlapping ends of the two yarns. The yarn is provided with an entangling means for intertwining the filaments of each thread by blowing compressed air onto the ends. In this device, first, the terminal ends and starting ends of two multifilament yarns are overlapped each other by a predetermined length, and then the ends of the overlapping yarns are clamped by a pair of clamp means separated from each other. . Next, after stretching the yarn in a range of 0.8 to 1.2 times the predetermined stretching ratio by a pair of clamp means, the yarn is relaxed, and then the overlapping yarn between the clamp means is compressed by an interlacing means. Air is blown to disperse each thread into filaments and to entangle these filaments. As a result, the ends of the threads are joined together.

(Problem to be solved by this invention) However,
In such conventional binding devices, the multifilament is clamped by clamp means and stretched at a predetermined stretching ratio, and then the yarn is relaxed and then intertwined with compressed air. Although it was effective for intertwining filament yarns, for fine denier, low filament count yarns such as nylon multifilament yarns, even if they were stretched and then relaxed, the yarns would return to nearly the length before stretching. Therefore, even if the yarns were entangled with compressed air in this state, a good entangled state could not be obtained. As a result, yarn breakage occurs at the joint portion when passing through the tail during continuous DTY processing, resulting in the problem that continuous DTY processing of nylon multifilament yarns is not possible.

(Means for Solving the Problems) The present invention was made with the purpose of solving the above problems, and it is a method for connecting the terminal ends and starting ends of two multifilament yarns. A coupling device,
a pair of clamping means installed at a predetermined distance from each other and capable of clamping the overlapping ends of the two yarns; and a pair of clamping means installed between the clamping means, applying compressed air to the overlapping ends of the yarn between the clamping means. An interlacing means for intertwining the filaments of each yarn by spraying, an adjusting means for adjusting the interval between the pair of clamping means, a regulating means for regulating the interval, It has been established.

(Function) The function of the present invention having such a configuration is as follows.

First, the terminal ends and starting ends of two nylon multifilament yarns are overlapped by a predetermined length. Next, the distance between the pair of clamp means is set to the maximum length by means of an adjusting means for adjusting the distance between the pair of clamp means and its regulating means. Next, the overlapping ends of the threads are clamped by a pair of clamping means separated from each other. Next, the adjustment means and the restriction means shorten the distance to a predetermined distance and relax the yarn. Next, compressed air is blown onto the yarn by an interlacing means to defibrate the filaments of each yarn and entangle these filaments with each other. In this way, the ends of the nylon filament threads with a high percentage of thread breakage are joined together.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. 1 to 3 are diagrams showing one embodiment of the present invention. Note that this example is an example in which the present invention is applied to a fine denier, low filament count yarn such as nylon filament yarn.

In FIG. 1, 1.2 is a bobbin around which undrawn or semi-drawn nylon multifilament yarns 3.4 are wound, and the terminal ends 5 and starting ends 6 of these yarns 3.4 are overlapped with each other. has been done. 7 is thread 3.
A movable holder 9 is connected to the fixed holder 7 so as to be movable in parallel via an adjusting means 8 for adjusting the spacing, which will be described later. The fixed holder 7 and the movable holder 9 have threads 3 attached to each other.
．． Clamping means 10.1 separated by a predetermined distance in the extending direction of 4.
1 is attached to each. These clamping means 10, 11 move closer to each other and move away from each other as the movable holder 9 moves. The aforementioned fixed holder 7, movable holder 9, and adjustment means 8 collectively constitute an approach/separation means 12. Each of the clamping means 10.11 has a single-acting cylinder 13, in which a piston 1 having a piston rod 14 is inserted, as shown in detail in FIG.
5 is stored. 16 is a boat for supplying fluid formed in the cylinder 13, and 17 is a spring that urges the piston 15 to retract the piston rod 14. A head body 18 is fixed to the tip of the piston rod 14, and a box 20 is swingably connected to the head body 18 via a pin 19. A clamp member 21 made of a non-metallic elastic material such as polyurethane rubber is attached to the box 20. On the other hand, a clamp member 23 similar to the clamp member 21 is attached to a step 22 of the movable holder 9 or the fixed holder 7 that faces the clamp member 21 . In this way, the ramp member 21.23 is connected to the thread 3.
Increase the coefficient of friction with yarn 3.4 when it is pinched. Incidentally, it is also possible to omit the lamp members 21, 23 and to clamp the yarn 3.4 with a metal surface, but in this case, the clamping surface may be mirror-finished. The aforementioned cylinder 13, piston 15, piston rod 14, a
The part 18, the box 20 and the clamping member 21.23 collectively constitute a clamping means 10.11, respectively.

Interlacing means 24 are installed between the clamping means 10, 11 and have an interlacing block 25 as shown in FIG. This interlacing block 25 has an interlacing hole 2 into which the end portion 5.6 of the overlapping yarn 3.4 is inserted.
6 is formed, and one end of an ejection hole 27 for ejecting compressed air is opened in the central wall surface of the entangled hole 26.

This jet hole 27 extends perpendicularly to the interlacing hole 26, and the other end is connected to a source of compressed air (not shown). The axial length l of this interlacing hole 26 is 15 or more and 3
A range of 5 dragons or less is preferable.

Now, returning to FIG. 1 again, each clamping means 10.1
The adjustment means 8 is interposed between the end portions of 1. The adjusting means 8 has a single-acting cylinder 28 in which a piston 3 having a piston rod 29 is provided.
0 is stored. 31 is a fluid supply port formed in the cylinder 28, and 32 is a spring that urges the piston 30 upward in FIG. The cylinder 28 is also connected to the end of the clamping means 10 and is connected to the piston rod 2.
9 is connected to the clamp means 11 via one end of a bracket 33 connected thereto. This bracket 33
The other end is inserted between a pair of stopper members 34, 35, and the amount of movement of the piston rod 29 is regulated by these stopper members 35, 36. Therefore, the spacing between each clamping means 10.11 is set by the adjustment means 8 to be 25.
Adjusted to be greater than a dragon and less than 50mm. Note that the pair of stopper members 34 and 35 constitute a regulating means 36 as a whole. Further, a pair of rods may be provided between the clamping means 10.11 so that the clamping means 10.11 can smoothly approach and separate from each other.

Next, the operation of this invention will be explained.

First, the terminal end 5 of the yarn 3 and the starting end 6 of the yarn 4 are passed through the interlacing hole 26 from opposite sides, and then overlapped by a predetermined length. Next, fluid is supplied from the fluid source into the cylinder 28 through the boat 31, and the piston rod 29 is moved downward in FIG. 1 while compressing the spring 32 to maximize the gap.

Note that positioning at this time is regulated by the stopper member 35. The overlapping threads 3.4 are then positioned between mutually spaced clamping members 2123 of the clamping means 10.11. Next, fluid is supplied from the fluid source through the port 16 into the cylinder 13 of each clamping means 10.11, compressing the spring 17 while compressing the piston rod 14.
make it stand out. As a result, the overlapping threads 3.4 are respectively clamped by the clamping members 21.23 of each clamping means 10.11.

At this time, the thread 3.
4 tries to slip out, but the clamp members 21 and 23
Since the threads 3.4 are made of polyurethane rubber, the threads 3.4 are securely held without slipping.

Next, the fluid in the cylinder 28 is removed and the clamping means 11 is moved upward in FIG. 1 by the reaction force of the spring 32.
Reduce the distance. For example, the shrinkage amount at this time is LX
By setting it to (0.05 to 0.15), the interval will be in the range of 25 or more and 50 or less. The yarn 3.4 is thus relaxed. Next, compressed air supplied from a compressed air source is ejected from one end opening of the ejection hole 27 into the entangled hole 26, and is blown onto the threads 3.4 that overlap each other. 3. Compressed air creates yarn.
4, each filament 3.4 is unraveled and the filaments become intertwined with each other. As a result, the starting end 5 of the thread 3 and the terminal end 6 of the thread 4 are intertwined within a range of 15 to 35 threads, and the threads 3.4 are joined together. Next, port 1
6 to the atmosphere, the piston rod 14 of the clamping means 10.11 is retracted by the spring 17, and the thread 3.4 is released from its grip.

Next, FIG. 4 is a sectional view of a main part showing another embodiment of the present invention.

In this embodiment, two interlacing means 40.41 are provided between each clamping means 10.11.

In the figure, 40A and 41A indicate intertwining blocks, and the yarns 3.4 are entangled with compressed air jetted from jet holes 40B and 41B formed in these intertwining blocks 40A and 41A, respectively. Note that 42 is a ballooning prevention plate provided between the two intertwining blocks 40A and 41A. In this example, the interlacing blocks 4'OA, 4
Since the yarns 1A are stacked in two stages, the degree of entanglement of the yarns 3.4 can be further increased. The other configurations and operations are the same as in the previous embodiment.

(Effects) As explained above, according to the present invention, the ends of fine denier, low filament count yarns such as nylon filament yarns can be extremely easily and reliably joined together.

In addition, since the bonded portion of the bonded yarns is thin, the yarns can be connected in high-speed friction POY-DTY processing without being cut at the bonded portion. Further, the present invention can also be applied to the case where polyester or polyamide-based FDY yarn (drawn yarn) is subjected to bottle-type false twist processing.

[Brief explanation of drawings]

FIGS. 1 to 3 are diagrams showing an embodiment of the present invention,
FIG. 1 is a schematic front view thereof, FIG. 2 is a sectional view taken along the line nn in FIG. 1, FIG. 3 is a sectional view of the entangling means, and FIG. FIG. 3.4... Yarn, 5.6... End of thread, 8... Adjustment means, 10, 11... Clamping means, 24・・・・・・
- Confounding means, 36... Regulating means, L... Interval.

Claims (4)

[Claims] (1) A yarn joining device that connects the terminal ends and starting ends of two multifilament yarns, a pair of which are installed at a predetermined distance from each other and are capable of holding the overlapping ends of the two yarns, respectively. and an entangling means installed between the clamping means and intertwining the filaments of each yarn by blowing compressed air to the ends of the overlapping yarns between the clamping means. What is claimed is: 1. A yarn joining device, characterized in that the device comprises: an adjusting device for adjusting the distance between the pair of clamping devices; and a regulating device for regulating the distance. (2) The distance adjusted by the adjustment means is 25 m.
The yarn binding device according to claim 1, characterized in that the yarn length is greater than or equal to m and less than or equal to 50 mm. (3) Claim 1, characterized in that a plurality of entangling means are provided within the interval between the pair of clamping means.
The yarn binding device described in . (4) The yarn binding device according to claim 3, further comprising a plate for preventing ballooning between the plurality of entangling means.