JPH07137940A - Method of locking trailing end of thread fully wound on bobbin - Google Patents

Abstract

PURPOSE:To surely lock the trailing end of a thread fully wound on a bobbin by twisting a slack set up in the vicinity of the trailing end of the thread together with a part of the thread in a final turn so as to entangle the end part and the final turn of the thread together. CONSTITUTION:A thread 1 is led through two thread guide U-like rings 3, 4 which are suitably spaced from each other and which are adjacent to a wind-up bobbin 2 whose rotation is stopped after completion of wind-up of the thread 1, and then the thread 1 is fed out while the bobbin 2 is rotated by one turn together with the rings 3, 4 so as to form a final turn T separated from the barrel of the bobbin. The thread 1 is cut by a cutter 6 so as to grip a thread end E at a position which is off from the U-like ring 4 remote from the barrel of the bobbin 2, to the supply side, and thereafter, the U-like ring 3 is fastened so as to clamp the thread 1 while the gripped end E of the thread is pushed toward the barrel of the bobbin. Accordingly, a slack 7 is formed in the thread between the two U-like rings 3, 4, and the slack 7 and the final turn are twisted together so as to lock the thread.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for locking a winding end of a fully wound bobbin.

[0002]

2. Description of the Related Art Recently, various researches have been made on automatic winding bobbin exchange technology for labor saving of winding bobbin exchange in a twisting machine and the like. A method of locking the ends is needed.

Conventionally, the method shown in FIG. 6 is well known.
This is for fixing the wire end E of the filament body 1 when the filament body 1 is wound around the take-up bobbin 2 and is in a fully wound state to the winding bobbin 2 so as not to be loosened and loose. This is a method of sticking and fixing the end E on the winding layer of the winding bobbin 2 with an appropriate adhesive tape 101.

[0004]

However, in the method of using the adhesive tape shown in FIG. 6, since the separate part called the adhesive tape is used, the cost for purchasing and managing the adhesive tape is high. However, there are drawbacks such as deterioration and loss of efficacy over a long period of time, and the adhesive material of the adhesive tape damaging the coated surface of the filamentous body.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is provided on the body of a winding bobbin which has stopped winding after winding a specified amount of filaments. A step of bringing two wire passing U-rings, which are appropriately separated from each other, close to each other to pass the filamentous body through them, and further rotating the winding bobbin together with the wire passing U-ring once while sending out the filamentous body. A step of forming a turn away from the body portion; a step of cutting the filament body at an appropriate position closer to the supply side than a wire passing U-ring farther from the body portion and gripping a wire end; A step of forming a slack portion between two wire-through U-rings by tightening the wire-through U-ring near the part and pushing the gripped wire end to the body part side while clamping the linear body, and two wires The slack part and the final turn should be A step of twisting plate sandwiched by the device, twisting and twisting the four line portions of the sandwiched,
A method of locking a winding end of a full bobbin including a step of separating the wire passing U ring.

[0006]

[Function] By the two U-rings, two separated points on the final turn of the linear body can be held at a position apart from the body of the winding bobbin, and the linear body between these two points on the final turn can be held. Can be held together in a parallel state with the linear body portion near the end of the line.
By twisting together the slack part formed near the wire end and the linear body part on the final turn, the wire end is securely locked in the final turn, and the winding end end of the full bobbin is securely locked. Done.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Each step of the method of the present invention will be described with reference to FIGS. First, as shown in FIG. 1 (a), when the winding bobbin 2 has wound up a specified amount of the filamentous body 1 and is fully wound, the rotation of the winding bobbin 2 is stopped.

Next, as shown in FIG. 1 (b), two wire-through U-rings 3 and 4, which are appropriately separated from each other by a distance d, are moved to the vicinity of a fully wound body portion to form a linear strip. Body 1 to U
Pass through the letters. The wire passing U-rings 3 and 4 are U-shaped wire passing means made of an appropriate material as shown in the figure, and are attached to the end of the mounting arm 5 and can rotate coaxially with the winding bobbin 2. It has been done. One of the wire passing U-rings 3 will be described later with reference to FIG.
One of the U-shaped turning rods is made to be able to rotate and close. The distance d is about 10 cm
It can be understood as a degree.

Next, as shown in FIG. 2A, the winding bobbin 2 is further rotated once from the stopped state. At this time, the wire passing U-rings 3 and 4 are rotated once together with the winding bobbin 2 to the outside. FIG. 2A shows the state after one rotation in this way, but it can be seen that this one rotation forms the final turn T slightly outside the body of the winding bobbin 2. After this, the line member 1 is cut by a cutter 6 just before the wire passing U-ring 4, and the wire end E is grasped by an appropriate movable member.

Next, as shown in FIG. 2 (b), the wire passing U-ring 3 closer to the body is tightened, and the wire end E is pushed to the right in the drawing, as shown in FIG. 3 (a). A slack portion 7 of the filament is formed between the two wire passing U-rings 3 and 4.

Next, the twisting plate device 8 is sent out from above in the drawing between the U-rings 3 and 4 through a line, and a portion close to the line end E between the two slabs 81 and 82 (described later) of the device 8. The strip body and the slack section 7 are sandwiched together.

As shown in FIG. 5, the twisting plate device 8 is a twisting device in which two siding plates 81 and 82 made of a material such as rubber can be slid in opposite directions to each other. In the step, the linear body of the portion near the line end E sandwiched between the two slabs 81 and 82 and the slack portion 7 are twisted and locked. After the torsional locking, the wire passing U-rings 3 and 4 are disengaged.

The structure of the wire passing U-ring 3 will now be described with reference to FIG. 4. A rotating rod 32 is rotatably connected to a fixed rod 31 at a hinge shaft 34. On the opposite side of the hinge shaft 34 of 32, a wedge portion 33 inclined in a saw-tooth shape is formed. A push ring 9 is axially movably provided on the fixed rod 31, and is driven by, for example, an electromagnetic solenoid (not shown). It will be apparent from the same drawing that the turning rod 32 is tightened by moving the push ring 9 to the left in the drawing.

[0014]

According to the present invention, two separated U-rings on the final turn of the filament can be held at a position apart from the body of the winding bobbin, and the U-ring on the final turn can be held. Since the linear body between these two points can be collectively held in parallel with the linear body portion near the end of the line, it is extremely convenient for the locking work, and then the slack formed near the end of the line and the linear line on the final turn. By twisting the body part together, there is an effect that the wire end and the final turn can be entangled with each other and can be securely locked, and this has the advantage that the winding end end of the full bobbin can be reliably locked. is there.

[Brief description of drawings]

FIG. 1A and FIG. 1B are schematic side views for explaining subsequent steps of the method of the present invention.

2 (a) and 2 (b) are schematic side views for explaining subsequent steps of the method of the present invention.

3 (a) and 3 (b) are schematic side views for explaining subsequent steps of the method of the present invention.

FIG. 4 is a side view showing the structure of an openable U-ring that can be opened and closed.

FIG. 5 is a side view showing the structure of the torsion plate device.

FIG. 6 is a simplified plan view showing a conventional terminal treatment method for a full bobbin.

[Explanation of symbols]

 1 Wire body 2 Winding bobbin 3, 4 Wire passing U-ring 5 Mounting arm 6 Cutter 7 Slack part 8 Torsional plate device 81, 82 Shaft plate E Wire end

Claims (1)

[Claims] 1. Two wire passing U-rings which are appropriately spaced (d) from each other on the body of a take-up bobbin (2) which has stopped winding after winding a specified amount of filaments (1). (3,4)
To make the filaments (1) pass through them, and while the filaments are being sent out, the winding bobbin (2) is further rotated once together with the filament U-rings (3, 4) to make a final turn ( T) is formed away from the body, and the linear body is cut at an appropriate position closer to the supply side than the wire passing U-ring (4) farther from the body and the end (E) is cut. And the wire passing U-ring (3) near the torso portion is tightened to clamp the wire body (1) while pushing the gripped wire end (E) toward the torso side and two wire threading U ring (3
4) a step of forming a slack portion (7) between the slack portion (7) and the final turn (T) together between the two wire passing U-rings (3, 4) together with the twist plate device (8). ), And twisting and twisting the four wire portions sandwiched by each other, and a step of separating the wire passing U-rings (3, 4) from each other.