JPH0248462Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is directed to a weft storage device that attaches the weft ejected from a storage nozzle and is provided with a weft adhesion storage surface that moves relative to the storage nozzle. The present invention relates to a weft storage device that is capable of adjusting the draw-out angle of weft yarns.

(Prior art) In a fluid jet loom, it is necessary to measure and store a predetermined length of weft supplied from a weft supply source each time weft is inserted, and conventionally, such a storage device has been equipped with a length measuring roller. Commonly used storage devices include an air pool type storage device in which the length of the weft yarn is continuously measured by a mechanism and is ejected into a storage pipe for storage, and a drum pool type storage device in which the length of the weft yarn is wound around a drum to measure and store it. has been adopted. However, in all of these weft yarn storage devices, the weft pulling resistance is large, so it is necessary to increase the injection pressure of the main nozzle for weft insertion to increase the weft propulsion force, resulting in increased consumption of compressed air and even more There is a problem in that a weak weft yarn may cause jetting failure in the main weft insertion nozzle.

An example of a weft storage device that attempts to solve this problem is disclosed in Japanese Patent Laid-Open No. 57-95349. In this conventional device, the weft yarn is blown from a storage nozzle onto the outer surface of an endless belt stretched between a driving roller and a driven roller, and is deposited in a coil shape. In such a storage form, the pull-out resistance of the weft yarn is small, and the problems of increased consumption of compressed air and yarn breakage, which were problems in the air pool method or drum pool method, are eliminated.

(Problem to be solved by the invention) However, the relative position of such a weft attachment storage surface and the yarn guide that guides the weft pulled out from the storage surface is set unchanged, and the direction in which the stored weft is pulled out is fixed. Since it is always constant, the pull-out resistance changes depending on the type of weft or yarn count, for example, and there is a problem that the pull-out resistance, which affects the weft insertion state, cannot be set appropriately depending on the yarn type or yarn count. .

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a weft adhesion storage surface that attaches the weft ejected from the storage nozzle and moves relative to the storage nozzle. ,
a yarn guide that guides the weft yarn pulled out from the storage surface, and the storage surface and the At least one of the thread guides is configured to be adjustable in relative position setting.

(Function) That is, by appropriately adjusting the relative position of the weft attachment storage surface and the yarn guide that guides the weft pulled out from the storage surface according to the yarn type or yarn count, the weft withdrawal direction and the weft attachment storage surface can be adjusted. The optimal weft pull-out angle is set according to the yarn type or yarn count. As a result, optimal pulling resistance is always applied to the weft threads being pulled out from the weft attachment and storage surface, and the weft threads are drawn out from the weft attachment and storage surface in an orderly manner.

(Example) Hereinafter, examples 1 to 3 that embody the present invention will be described.
This will be explained based on the diagram.

A substantially U-shaped holder 2 is rotatably supported around a shaft 3 on the upper side surface of a support frame 1 that is fixed to a fixed part such as a side frame of a loom, and a support member 2 is supported on the upper part of the support frame 1. A bracket 4 is erected and fixed. A motor 5 is disposed on the back side of the support bracket 4, and a motor 5 is disposed on the front side of the support bracket 4.
A feed roller 6 is provided which is rotationally driven by. Above the feed roller 6, a guide bar 7 projects forward from the support bracket 4, and below the feed roller 6, a storage nozzle 8 is also secured to the support bracket 4. A weft Y supplied from a weft supply source (not shown) is wound around a feed roller 6 via a guide bar 7 and introduced into a storage nozzle 8.

A support bracket 9 is connected and suspended from the lower piece of the holder 2 via a bent upper piece 28 so as to be perpendicular to the support frame 1, and a pair of rollers 10 and 11 are supported on both left and right sides of the bracket 9. axis 10
a, 11a are attached. One shaft 10a integrally supports the roller 10. other axis 1
1a rotatably supports a roller 11, and a threaded portion of the shaft 11a is inserted into an arcuate hole 9a formed in the support bracket 9 around the shaft 10a, and is tightened and fixed with a nut 12 so that the position can be adjusted. There is. That is, as shown in FIG. 3, the rotational position of the roller 11 can be adjusted around the shaft 10a. An endless belt 13 is stretched between the rollers 10 and 11, and a moquette is laid on the outer surface of the belt 13 to form a weft adhesion storage surface 14. A rope or belt 27 is hung between the drive shaft 15a and shaft 10a of the drive motor 15 fixed to the front surface of the support bracket 9 below the roller 10, and the roller 10 is moved in the direction of the arrow shown in FIG. It is now being rotated. That is, the weft Y ejected from the storage nozzle 8 is sprayed onto the weft adhesion storage surface 14 running in the direction of the arrow, and the weft Y is adhered and stored on the storage surface 14 in the form of a coil.

A substantially L-shaped auxiliary piece 16 is fixed to the bent lower piece 29 of the support bracket 9 below the holder 2, and the circular arc hole 1a formed in the lower part of the support frame 1 with the shaft 3 as the center is fixed. The auxiliary piece 16 is tightened and fixed by a bolt 17 and a nut 18 that are inserted and screwed onto the auxiliary piece 16 so that the rotational position thereof can be adjusted. That is, as shown in FIG. 2, the rotation position of the belt 13 can be adjusted back and forth around the shaft 3.

A yarn guide 19, a gripper 20 that opens and closes in synchronization with the weft insertion timing, and a weft insertion main nozzle 21 that also operates in synchronization with the weft insertion timing are arranged in front of the weft storage device having such a configuration. The weft yarn Y is ejected from the storage nozzle 8.
is introduced into the main nozzle 21 for weft insertion via the yarn guide 19 and gripper 20, and into the weft guide path S formed by a large number of weft guide members 22 arranged in parallel on a slay (not shown) for weft insertion. The weft is inserted from the main nozzle 21.

Now, the weft Y ejected from the storage nozzle 8 at a predetermined speed is blown onto the weft adhesion storage surface 14,
As the belt 13 runs, the weft yarn is deposited and stored on the weft adhesion storage surface 14. When the gripper 20 is opened in synchronization with the weft insertion timing and the main nozzle 21 is operated, the weft Y adhered and stored on the weft adhesion storage surface 14 is pulled out. If the drawing direction is in the direction of the weft attachment storage surface 14 as shown by the solid line in FIG.
The contact ratio between the moquette forming the weft and the drawn weft increases, and the drawing resistance increases. If the auxiliary piece 16 is rotated counterclockwise around the shaft 3 to adjust its position, the contact resistance due to the moquette will be further increased, and it is possible to apply an appropriate pull-out resistance to the weft with less fuzz.

On the other hand, if a weft with a lot of fuzz is used, the second
As shown by the chain line in the figure, by rotating the auxiliary piece 16 clockwise and adjusting its position, the angle formed between the weft attachment storage surface 14 and the weft withdrawal direction can be increased, and thereby the moquette and the weft Y The contact ratio is reduced, and an appropriate pull-out resistance is provided.

Similarly, if the weft pull-out angle from the weft attachment and storage surface 14 is appropriately set according to the difference in yarn count to provide pull-out resistance, the weft can be pulled out from the weft attachment and storage surface 14 in an orderly manner.

Further, in this embodiment, the rotational position of the weft attachment storage surface 14 can be adjusted around the shaft 10a,
As shown in FIG. 3, if the driven roller 11 side is moved downward as shown by the chain line to lower the weft attachment storage surface 14 on the roller 11 side, the pull-out resistance can be reduced by the driven roller 1.
The size gradually increases from the 1st side toward the drive roller 10 side. Therefore, the sudden drop in weft insertion speed that occurs when transitioning from weft insertion when pulling out the stored weft to weft insertion that is constrained by the ejection speed at the storage nozzle is alleviated, and the weft insertion speed due to the reaction of the sudden drop in weft insertion speed is alleviated. Disturbance of the leading end or the phenomenon of the weft leading end jumping out from inside the weft guide path S is prevented.

In this way, by appropriately adjusting the weft pull-out angle from the weft attachment storage surface 14 according to the yarn type or yarn count, the pull-out resistance of the stored weft yarn pulled out from the weft attachment storage surface 14 is always appropriately set, and the weft Stable weft insertion can be ensured by orderly unloading.

It should be noted that the present invention is not limited to the above-mentioned embodiment. For example, as shown in FIG.
It is also possible to embody the present invention in a weft storage device in which the weft attachment storage surface 14 is formed on the disk 23 which is rotationally driven by the weft 5. In this embodiment as well, the auxiliary piece 16 fixed to the lower surface of the support bracket 9 that supports the disc 23 can be rotated and adjusted along the arcuate hole 1a of the support frame 1, similar to the previous embodiment. By adjusting the relative position between the yarn guide 19 and the weft attachment and storage surface 14, the weft withdrawal angle from the weft attachment and storage surface 14 can be appropriately set depending on the type of weft or the yarn count.

Furthermore, in the embodiment shown in FIG.
4 supports the rollers 10 and 11, and a thread guide arm 25 is attached to a screw 26 on a separate frame outside the tip of an arm 24a bent on the support frame 24.
It is tightened and fixed so that its rotational position can be adjusted in the weft drawing direction. Further, the support frame 24 is rotatably adjustable or vertically adjustable as in the previous embodiment. Therefore, by adjusting the relative position between the yarn guide arm 25 and the weft attachment and storage surface 14, the weft withdrawal angle from the weft attachment and storage surface 14 can be set as appropriate.

Effects of the invention As detailed above, the present invention makes it possible to change the contact state between the storage surface and the weft yarn at the withdrawal position on the storage surface by changing the withdrawal angle, and always maintains a stable weft insertion condition depending on the yarn type and count. It has the excellent effect of being able to secure.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment embodying the present invention; Figure 1 is a perspective view, Figure 2 is a side view, and Figure 3 is a tilted state of the weft attachment storage surface in the running direction of the belt. FIG. 4 is a side view showing another example of the present invention, and FIG. 5 is a perspective view showing still another example. Weft attachment storage surface 14, yarn guides 19, 25, weft Y.

Claims (1)

[Scope of utility model registration request] A weft adhering storage surface that attaches the weft ejected from the storage nozzle and moves relative to the storage nozzle, and a yarn guide that guides the weft pulled out from the storage surface, the storage surface and the same storage surface. A weft storage device for a shuttleless loom, wherein the relative position setting of at least one of the storage surface and the yarn guide is configured to be adjustable so that the state of contact with the weft at an upper withdrawal position can be changed by the withdrawal angle of the weft.