JPH038676Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a threading device for a thread winding device. More specifically, by arranging a thread separating device in which a thread threading guide located at the back of the yarn winding device is movable, on the upstream and downstream sides of the traversing device in the winding device, thread threading can be easily carried out. It is an object of the present invention to provide a threading device for a winding device that can improve workability and threading success rate.

In recent years, yarn winding devices have tended to have multiple threads and become extremely long, and there has been a problem in that it is extremely difficult to thread yarns that are closer to the back of the winding device. .

Therefore, an attempt has been proposed to improve work efficiency by using a thread separating device that allows the thread threading guide located at the back of the winding device to be moved during thread threading (Japanese Patent Application Laid-Open No. 1989-1992-1). Publication No. 155236). However, this device does not include a single thread separating device downstream of the traversing device. Therefore, when passing the thread through the threading guide while suctioning the thread with the suction device, or when moving the threading guide to the back side after passing the thread through the threading guide, the thread is Since the friction roller of the thread winding device comes into contact diagonally with respect to the circumferential direction of the surface, the thread tends to sway, and furthermore, the suction speed in the circumferential direction of the friction roller decreases, causing the thread to become frictionless. The yarn gets wrapped around the roller, reducing the success rate of threading. This tendency becomes remarkable when the winding speed increases to 3500 m/min or more, when the thread-like denier becomes small, or when the length of the bobbin holder increases to 800 mm or more.

In a thread separating device in which three or more threading guides are arranged in parallel, the threading guide at least on the back side of the winding device is moved to the front side to thread the thread, and the threading guide is moved to the front side of the winding device. This was done with the focus on the fact that by providing thread separating devices on the upstream and downstream sides of the swinging device, these drawbacks can be overcome, and the threading workability and threading success rate can be significantly improved.

Another object of the present invention is to provide a thread threading device that is capable of reliably moving and holding a thread threading guide in a fixed position with a simple mechanism and is suitable for mechanization and automation.

That is, the present invention provides a threading device in which three or more threading guides are arranged in parallel, and at least the threading guide located on the back side of the yarn winding device can be moved to the front side. This is a yarn threading device for a yarn winding device, characterized in that it is disposed at an upstream side and a downstream side of a traversing device in the yarn winding device.

The thread separating device used in the present invention has three or more threading guides arranged in parallel on a guide holder. In particular, when the present invention is applied to a guide holder provided with four or more threading guides, the effect is significantly greater. On the other hand, 2
If the threading guide is provided with individual threading guides, threading work is rarely difficult, and there is little need to apply the present invention.

In the thread separating device according to the present invention, among the three or more thread threading guides provided in the guide holder, the thread threading guide located on the back side of the winding device is made movable toward the front side. Therefore, the threading guide closest to the user may or may not be movable as required. The threading guide located between the threading guide closest to you and the threading guide located farthest away (hereinafter referred to as the "intermediate threading guide") cannot be moved even if it is made movable if necessary. Although it does not have to be possible, if you want to make part of the threading guide at the intermediate position movable to the front side,
It is desirable that among the threading guides at intermediate positions, the one closer to the back side is movable, and the one closer to the front side is not movable.

The multiple threading guides on the guide holder are
Since they are usually arranged in a straight line, the limit to which the threading guide can be pulled toward the front is the closest possible position to the threading guide adjacent to the front of the threading guide. Therefore, if you want the furthest threading guide to be as close as possible to the furthest threading guide, you can move all intermediate threading guides toward you, but if necessary, The threading guide closest to the user may be moved to the nearest position.

Furthermore, in the present invention, it is necessary to provide thread separating devices both upstream and downstream of the traversing device in the winding device. If the thread separating device is installed only on either the upstream side or the downstream side of the traversing device, when passing the yarn through the threading guide while suctioning the yarn with the suction device, Or, after passing the yarn through the threading guide, when moving the threading guide to the back side of the winding device, the thread may come into contact with the surface circumferential direction of the friction roller of the yarn winding device diagonally. Therefore, the yarn tends to sway easily, and furthermore, the suction speed in the circumferential direction of the friction roller decreases, resulting in the yarn wrapping around the friction roller and reducing the threading success rate, which is unsuitable. .

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an external view of an example of a winding device employing an embodiment of the present invention. In the figure, A is a thread separating device disposed on the upstream side of the traversing device, and B is a thread separating device disposed on the downstream side of the traversing device. In both A and B, the threading guide 1 closest to you and the threading guide 2 second from the front are not movable, but the threading guide 3 third from the front and the threading guide 4 closest to the back are not movable.
move to the 3' and 4' positions respectively during threading, and threads 5, 6, and 4 are respectively placed on the four threading guides.
After threading threads 7 and 8 are finished, return the two thread threading guides closer to the back to their original positions 3 and 4, respectively. In this case, the thread threading guides of the thread separating devices A and B are respectively corresponding, that is, the thread threading guide 3 of the thread separating device A, the thread threading guide 3 of the thread separating device B, the thread threading guide 4 of the thread separating device A and the thread Threading guide 4 of separating device B
return them to their original positions at the same time. At B, the lever 9 is then swung in the direction of C to cause the thread catching section provided on the bobbin 10 to grip the thread.
A pigtail is formed using a pigtail forming device (not shown). 11 is a traverse device, 12
1 is a friction roller, and 13 is a frame of a winding machine.

2 and 3 are sectional views of the thread separating device shown in FIG. 1, with FIG. 2 showing the state when the thread is being separated, and FIG. 3 showing the state when threading. A piston 20 is movably attached to the inside of the fluid cylinder 18. Thread guides 1 and 2 are attached to thread guide supports 14 and 15, respectively, and the supports 1
4 and 15 are fixed to the outer diameter portion (ie, guide holder) of the fluid cylinder 18. The threading guides 3, 4 are respectively attached to supports 16, 17, which are movably attached to the inner diameter of the extension 18' of the cylinder tube. A piston rod 19 also serves as a positioning rod for the support 17, and penetrates through the support 16 and is fixed to the support 17 and the piston 20. 21 is a positioning rod, one end of which is fixed to the support 16;
The other end penetrates into the cylinder 18. 23,
24 is a fluid supply port. The threading guides 1, 2, 3, and 4 must be provided at exactly equal intervals when separating the threads, but the spacing between the threading guides 2 and 3 and the threading guides 3 and 4 is determined by It is precisely determined by the installation length of the piston rod 19.

The supports 16 and 17 are fitted into the cylinder tube extension 18' as described above, but as shown in FIG. They fit together and move, and rotation of the supports 16 and 17 around their axes is prevented.

Now, in such a device, when dividing the thread, the second
As shown in the figure, compressed air is introduced from the fluid supply port 24 to move the piston 20 to the right side, push the left side of the positioning rod 21, and thread the threading guide 1.
2, 3, and 4 are arranged at predetermined intervals.

When threading, as shown in Fig. 3, when compressed air is introduced from the fluid supply port 23 and the piston 20 is moved to the left, the left surface of the support 17 pushes the right end of the positioning rod 21, and the threading guide 3,
Move 4 to the left.

FIG. 4 is a sectional view showing another embodiment of the thread separating device of the present invention during thread separation. The device shown in FIG. 2 is the same except for the structural arrangement of the positioning rods. In this example, the positioning rod 22 is a hollow shaft, through which the piston rod 19 is slidably inserted. However, the method of operation is similar to that shown in FIGS. 2-3.

In the thread separating device shown in Figs. 2 to 4, the fluid cylinder is used as a guide holder for the threading guide, and the supports of the fixed threading guides 1 and 2 are directly attached to the cylinder outer cylinder, and the movable threading guide 3, Since the support 4 is guided in the cylinder tube extension, the thread separating device becomes compact and is a particularly suitable embodiment for winding devices, where space is usually limited. Further, in the above example, the threading guide is detachably attached to the support, but depending on the case, the threading guide and its support may be integrally constructed. Although a cylinder tube was used to guide the movement of the support, any other means such as a slide rail system may also be used to guide the movement of the support. Furthermore, there are 4 threading guides.
Although we have described a case in which two threading guides are installed side by side and two of them are moved, the number of threading guides is not limited to four, and all threading guides may be moved to the front side. Needless to say.

In addition, when the number of threading guides is three, for example, the member related to the third threading guide 3 may be excluded to make the intervals between the threading guides equal.

As described above, in the present invention, thread separating devices with movable thread threading guides are disposed on the upstream and downstream sides of the traversing device in the winding device to perform thread threading. This makes threading work extremely easy when winding a large number of threads, and
After passing the yarn through the threading guides of the upstream and downstream yarn separating devices, move the threading guide to the back side, and the yarn will almost move toward the surface of the friction roller of the yarn winding device. Since the yarn runs in parallel (perpendicular to the axial direction of the friction roller), the yarn does not wrap around the friction roller, and the threading success rate is significantly improved. For example, JP-A-52-
As described in Publication No. 155236, when only one thread separating device is provided downstream of the traversing device, the success rate of threading is only 60 to 70%, but according to the present invention, , the threading success rate improves to over 98%.

In addition, in the case of a device that moves multiple threading guides at the same time using a fluid cylinder, it is compact and can move the threading guides easily and reliably with a single drive source, so it is suitable for automation and mechanization. It is.

[Brief explanation of the drawing]

FIG. 1 is an external view of an embodiment of a thread hooking device for a thread winding device according to the present invention. FIG. 2 is a sectional view showing the state of the thread separating device shown in FIG. 1 during thread separation. FIG. 3 is a sectional view showing the device shown in FIG. 2 in a threading state. FIG. 4 is a sectional view showing another embodiment of the thread separating device of the present invention during thread separation. FIG. 5 is a view taken along the - arrow in FIG. 1, 2, 3, 4 are threading guides, 1
Reference numerals 4, 15, 16 and 17 are supports for threading guides, 18 is a fluid cylinder, 19 is a piston rod, 20 is a piston, and 21, 22 are positioning rods.

Claims (1)

[Scope of claims for utility model registration] (1) Three or more threading guides are installed in parallel,
In addition, yarn separating devices that are capable of moving at least a yarn threading guide located on the back side of the yarn winding device toward the front side are arranged on the upstream side and the downstream side of the traversing device in the yarn winding device. A thread threading device for a thread winding device. (2) The thread dividing device attaches a first threading guide support to the tip of the piston rod of the fluid cylinder, and includes another threading guide support between the first threading guide support and the fluid cylinder so that the piston rod passes through the thread separating device. A threading guide support is provided, and a positioning rod that penetrates into the fluid cylinder and is pushed out by the piston is connected to the other threading guide support, and the threading guide is supported according to the reciprocating movement of the piston of the fluid cylinder. A thread threading device for a yarn winding device according to claim 1, which is a device in which a thread threading guide attached to a body is movable. (3) A thread threading device for a thread winding device according to claim 2, wherein the positioning rod is a hollow shaft, and the piston rod passes through the hollow shaft. (4) A fluid cylinder is formed at one end of the cylindrical guide holder, a cylinder tube is extended at the other end of the guide holder, and the threading guide support moves through the cylinder tube in the axial direction. A thread winding device for a thread winding device as set forth in claim 2 or 3 of the utility model registration claim.