JPS602754A - Attachment of weft yarn detector of shuttleless loom - 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 Technical Field The present invention relates to a method for installing a weft detection device in a shuttleless loom. More specifically, the present invention is directed to the installation of a so-called embedded weft detection device, which has a similar shape to a weft insertion fluid guide such as an air guide, and is embedded in a guide block to detect weft insertion errors. is about the method.

Conventional technology In shuttleless looms such as air jet looms, weft inserting fluid guides such as air guides and auxiliary nozzles are attached to guide blocks in block units, and a large number of such guide blocks are fitted into grooves to install the slay. They are lined up in the weft insertion direction on the slay. Since this guide block has a fluid (air) supply section for the auxiliary nozzle formed in the center of the lower surface, a hole for attaching a fluid (air) supply is also formed in the sleigh correspondingly. The conventional fluid (air) supply mounting hole is a round hole corresponding to the fluid (air) supply section, and therefore, the mounting position of the guide plotter is naturally restricted. However, even though the position of the guide block for guiding the weft insertion fluid is restricted in this manner, there is no particular inconvenience.

The embedded type weft detection device has a similar shape to a weft insertion fluid kite such as an air guide, and is embedded in the guide plotter to detect weft insertion errors. It is embedded in a guide block at a position corresponding to the edge of the woven fabric (depending on the type of woven fabric, usually 10 to 25 mm from the edge of the woven fabric), where the guide block is attached to the slay. Therefore, even when the width of the fabric is changed, the mounting position of the auxiliary nozzle fluid (air) supply part and the slay is restricted by the holes in the embedded weft detection device, just like the auxiliary nozzle mentioned above. I was unable to move at all. Therefore, when changing the fabric width or weaving conditions, it is necessary to change the entire guide block, which increases equipment costs due to the production of various kite blocks, and also requires the use of a large number of guide blocks. It took a lot of effort to store and manage it.

OBJECT OF THE INVENTION The present invention solves the problems associated with the above-mentioned conventional technology, such as the rising cost of equipment and the troublesome storage management.
It is an object of the present invention to provide a method that can easily change the weft detection position to an optimal position in accordance with changes in weaving width.

Structure of the Invention The present invention provides a weft detection device for a shuttleless loom which is embedded in a guide block and attached to a slay near the edge of a woven fabric to detect weft breakage, in which the guide block is moved along the slay. The method of mounting a weft detection device on a shuttleless loom, which is fixed movably in the weft insertion direction, achieves the above-mentioned objective.

In the present invention, as shown in the embodiment, it is preferable that the sleigh hole portion corresponding to the auxiliary nozzle fluid supply portion attached to the guide block is formed into an elongated hole, and the entire guide block is moved.

Further, a small guide block may be sandwiched between the guide block in which the weft detecting device is embedded and the guide on the entrance side thereof.

DESCRIPTION OF EMBODIMENTS Below, the present invention will be described in detail based on drawings illustrating embodiments. 1 to 3 show a weft detection device applied to an air jet loom. As is clear from the figure, the weft detection device 1 has a weft passage 1C in the center and a weft outlet 1d that communicates the weft passage 1C with the outside, and has a shape similar to an air guide. Groove 1 on both sides
a11b. A photoelectric detection device consisting of a pair of light emitter 15 and light receiver 16 is placed oppositely across the weft outlet 1d, and lead wires connected to the light emitter 15 and light receiver 16 are embedded in the grooves 1a and 1b (see Fig. 2). ).

As shown in FIG. 4, the weft detecting device 1 having such a structure is embedded in the guide block 3 together with an air guide (not shown since it overlaps with the weft detecting device 1 in the direction perpendicular to the paper) and an auxiliary nozzle 2. .

To attach the guide block 3 to the slay 5, attach it to the groove,
The guide block 3 and the reed 4 are fixed to the sley 5 on the sley sword 8 by fastening the trapezoidal spacer 6 with the poles 1 to 7.

Air supply pipe 1 for supplying compressed air to the auxiliary nozzle 2
2 is screwed into the guide block 3, and the air supply pipe 1
2 passes through a hole 5a formed at the bottom of the slay 5.

Note that 9 is a washer and 10 is a nut, and the nut 10 is screwed into a threaded portion formed on the air supply pipe 12 to press the washer 9 against the bottom surface of the slay 5.

In the conventional mounting method of the weft detection device 1 of a shuttleless loom, the hole 5a formed at the bottom of the sleigh 5 is circular. For this reason, the mounting position of the guide block 3 is naturally restricted, and at the same time, the mounting position of the weft yarn detection device 1 is also restricted.

However, the embedded weft detection device 1 is designed to detect weft insertion errors, and is located at a position corresponding to the edge of the fabric where weft insertion errors are likely to occur (usually at the edge of the fabric depending on the type of fabric). It is desirable to install it within a width of 10 to 25 mm within the fabric, and if the width of the fabric is changed, it is desirable to be able to move it to an appropriate position.

As shown in FIG. 5, the weft detection device of the shuttleless loom of the present invention is installed by inserting an air supply pipe passage hole 5a formed at the bottom of the sleigh 5 in the longitudinal direction of the sleigh (fl insertion direction).
As a result, the air supply pipe 12
Therefore, the guide block 3 to which the air supply pipe 12 is connected is movable in the weft insertion direction along the slay 5, and the weft detection device 1 embedded in the guide block 3 can be moved along the elongated hole. can be positioned at the optimum position very easily. In addition, in FIG. 8, 3a is an air supply hole.

Furthermore, in this embodiment, as shown in FIGS. 6 and 7, small kite blocks 13 having different lengths j (in FIG. 6, there are three air guides, and in FIG. 7, there are six air guides).
(having two air guides) is prepared. By appropriately selecting and sandwiching the small guide block 13 between the guide block 3 and its entrance-side guide, the weft detecting device can be positioned at an optimal position. In addition,
In this case, if the small guide blocks 13 cannot be clamped together, guide blocks 13 of different lengths may be used.
Use. By doing so, the weft detecting device can be positioned at the optimum position without having to embed the weft detecting device and preparing an excessively large variety of guide blocks 3 having different lengths.

In the above description, the weft detection device 1 is located within the width of the fabric, but the present invention provides a weft detection device 1 located between the fabric edge and the selvage, or outside the selvage. It is also applicable to those where

EFFECTS OF THE INVENTION According to the present invention, the weft detection position can be easily changed to the optimum position in response to a change in weaving width, without increasing equipment costs or complicating storage management.

[Brief explanation of the drawing]

1 to 3 show a weft yarn detection device applied to an air jet loom, and FIGS. 1 and 2 are side views, and FIG. 3 is a sectional view taken along the line 1--2 in FIG. 1. FIG. 4 is a side view of a weft detection device for a shuttleless loom installed by the method of the present invention, FIG. 5 is a plan view of the sley, FIGS. 6 and 7 show small blocks, and FIG. ') and 7(a) are front views, 6(b) and 7(a) are front views.
Figure (b) is a plan view. FIG. 8 is a front view of a weft detection device for a shuttleless loom installed by the method of the present invention. 1... Weft detection device, 2... Auxiliary nozzle, 3...
・Guide block, 4... Reed, 5... Slay, 6
...Spacer, 8...Slay sword, 13...Small block Patent applicant Toyota Industries Corporation Patent application agent Eiji Sannaka Patent attorney Kikue Yamamoto

Claims (1)

[Claims] 1. In a weft detection device for a shuttleless loom, which is embedded in a guide block and attached to a slay near the edge of a woven fabric to detect weft breakage, the guide block is moved along the slay. A method for installing a weft thread detection device on a shuttleless F1 machine, characterized in that the device is fixed so as to be movable in the weft insertion direction. 2. The shuttleless shuttle according to claim 1, wherein the sleigh hole portion corresponding to the air supply portion for the auxiliary nozzle attached to the guide block is formed into an elongated hole, and the entire kite block is moved. How to install a weft detection device on a loom. 3. A method for attaching a weft detection device to a shuttleless loom according to claim 2, wherein a small kite block is sandwiched between the guide block and its entrance side guide.