JPS6410615B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for attaching a heald used as a shedding device of a loom to a heald frame.

In a loom, one heddle that controls the shedding movement of warp yarns is provided for each warp yarn, and each heald that performs the same movement is attached to the same heald frame.

As a conventional structure for attaching a heald to a heald frame, for example, a structure as shown in FIG. 1 is common. That is, the heald frame 1 consists of upper and lower cross beams 2a, 2b and side frames (side stays) 3a, 3b, and both ends of heald bars 4a, 4b arranged at a slight distance from the upper and lower cross beams 2a, 2b are It is fixed to the side frames 3a and 3b by a fixture 5. The heald 6 has a mail hole 7 for inserting the warp threads in the middle part, and also has loop-shaped attachment parts 8a and 8b at both ends, and these attachment parts 8a and 8b are attached to the upper and lower heald bars 4a and 4, respectively.
inserted into b. And heald bars 4a, 4b
is supported at its proper position by middle hooks 9 attached to the cross beams 2a and 2b, thereby preventing its deflection.

However, in such a conventional mounting structure, the heald 6 moves freely due to the vertical movement of the heald frame 1 within the range of play between the fitting parts 8a, 8b and the heald bars 4a, 4b. , metals abutted against each other, and this accounted for a large portion of the noise of the loom.

Therefore, as shown in Japanese Patent Laid-Open No. 53-106863, the attachment portion of the heald to the heald bar is made of plastic to reduce noise.

However, since this machine also used a heald bar, the heald bar added weight, and the heald frame had to be made larger to accommodate the heddle bar, which increased the overall weight. I couldn't deal with it.
In addition, if the heald is attached via a heald bar, the manufacturing error increases accordingly, and the hole diameter of the heald attachment part must be made larger, which increases the play of the heald. There was significant wear and tear, and there were also problems in terms of durability.

Furthermore, in Japanese Patent Application Laid-Open No. 49-101663, a rectangular holding rail is attached to the cross beam of the heald frame, and a two-pronged fork leg formed at the end of the heald is fitted to this. However, in order to reduce the weight and noise of the heald, if the fork legs are made of a cushioning material such as plastic or hard rubber, the heald frame should be made as thick as possible. Since the fork legs are thin, it is difficult to provide sufficient strength to the fork legs, and there is a risk that the fork legs may come off the holding rail.

Therefore, the present inventors devised a mounting structure as shown in FIGS. 2 to 5.

That is, the heald frame 11 has upper and lower cross beams 12a, 12b.
and side frames 13a, 13b, and upper and lower cross beams 1
Fitting portions 14a, 14b having a rectangular cross section are formed in the longitudinal direction of the fittings 2a, 12b. These fitting parts 14a and 14b are connected to the upper and lower cross beams 12a,
Slits 15a, 15 open on the opposite surface of 12b
b, and both sides of the slits 15a, 15b form locking portions 16a, 16a', 16b, 16b'.

Further, near the ends of the cross beams 12a, 12b, there is a notch groove 17 cut out from the opposing surface side, penetrating in the front-rear direction, and crossing the fitting portions 14a, 14b.
a and 17b are formed. 18 is notch groove 17
The fitting portions 14a, 14b near a, 17b
a regulating body inserted into the slit 15;
It has an integral stud bolt 18' projecting from a and 15b, and is fixed with a nut 20 via a washer 19.

The heald 21 has a mail hole 22 for inserting warp threads in the middle part of a plate-shaped metal member made of stainless steel or the like, and rectangular attachment parts 23a and 23b are formed by integrally molding plastic or hard rubber at both ends of the mail hole 22. be.

Therefore, when attaching the heald 21 to the heald frame 11, the heald 21 is attached with the regulating body 18 removed.
Insert the mounting parts 23a, 23b into the notch grooves 17a, 17b of the cross beams 12a, 12b, and then insert the fitting parts 14a,
14b, the cross beams 12a and 12b are shifted in the longitudinal direction and installed. When all the fittings are completed, the regulating body 18 is inserted and fixed with the nut 20 to prevent the heald 21 from falling off.

According to such a mounting structure, the heald bar and middle hook can be eliminated, and the weight can be reduced accordingly, and the heald frame 11 can be made smaller and the weight can be significantly reduced, making it suitable for high-speed looms. Furthermore, since the mounting portions 23a and 23b of the heald 21 are made of a cushioning material such as plastic, the cross beams 12a and 23b are made of cushioning material such as plastic.
When the fitting portions 12b come into contact with the inner surfaces of the fitting portions 14a and 14b, the cushioning effect can suppress the generation of sound, which is effective in reducing noise. Furthermore, in the past, the loop-shaped attachment part of the heald was fitted to the heald bar with a rectangular cross section, so that it was locked in a line contact state, but the attachment parts 23a, 23b and the inner surfaces of the fitting parts 14a, 14b Since the two come into contact and receive force, the support strength also increases.

However, the attachment parts 23a and 23b of the heald 21 have a structure in which plastic or hard rubber is attached to a plate-shaped metal member, and in order to provide strength to withstand warp tension and impact caused by vertical movement, the attachment parts 23a and 23b are considerably thicker than the plate-shaped metal member. It was inevitable that it would get thicker.
Therefore, when the number of heald frames is the same and the warp density is high, the density of the healds must be increased accordingly, but this is sometimes constrained by the thickness of the attachment parts 23a and 23b.

In this way, the present invention provides mounting parts made of cushioning material at both ends of the metal member of the heald, and the mounting parts are
The purpose of the present invention is to increase the density of healds in a heald frame which is fitted and locked into fitting parts formed in the longitudinal direction of the upper and lower cross beams of the heald frame.

For this reason, in the present invention, the wall thickness of the horizontal cross section of the mounting portion of the heald is formed so that one side is thick and the other side is thin, and the thick part and the thin part are made to face each other between the mounting parts of adjacent healds. In addition, by positioning both ends of the metal member of the heald offset to the thick wall side of the mounting portion, it is possible to increase the density of the heald.

An embodiment of the present invention will be described below based on FIGS. 6 to 9. However, the same parts as in FIGS. 2 to 5 are given the same reference numerals, and only the different parts will be explained.

The heald 31 has a mail hole 32 for inserting warp threads in the middle part of a plate-shaped metal member made of stainless steel or the like, and plastic or hard rubber is integrally molded at both ends of the mail hole 32 to fit the fitting parts 14a, 14b of the cross beams 12a, 12b.
Attachment portions 33a and 33b are formed to fit with the.

Here, both ends of the plate-shaped metal member of the heald 31 are bent and cast into the mounting parts 33a, 33b, and the sides of the mounting parts 33a, 33b into which the plate-shaped metal member is cast are in the thick-walled part 34. From this thick part 34, a fitting part 14a,
The wall thickness decreases in the direction across 14b, forming a tapered shape as shown in FIG. 35
is the thin part.

Thus, when mounting the heald 31, that is, when fitting the mounting portions 33a and 33b into the fitting portions 14a and 14b of the cross beams 12a and 12b, the thick portion 34 is inserted between the mounting portions 33a and 33b of adjacent healds 31. and the thin wall portion 35 are attached alternately in opposite directions so that they face each other.

In this way, the thick portions 34 of the mounting portions 33a and 33b into which the plate metal members of the heald 31 are cast are alternately shifted, and the density of the heald 31 can be increased accordingly.

In addition, in this embodiment, the mounting portion 33a of the heald 31,
After the fitting of the fitting 33b, the means for preventing the fitting from coming off from the cutout grooves 17a and 17b is constructed as follows. That is, in the vicinity of the notch grooves 17a and 17b, the cross beam 12
A pin insertion hole 36 is provided that passes through the fitting portions 14a, 14b from the front and rear surfaces of the pins a, 12b, and a regulating pin 37 is inserted into this pin insertion hole 36.
The regulation pin 37 has protrusions 38 and 3 at both ends.
9 is provided, and the holding body 4 is made of a U-shaped elastic body.
The small holes 41 and 42 of 0 are fitted into the projections 38 and 39 to hold the regulating pin 37, and the holding body 40 is attached and detached by elastically bending it. Such a regulation pin 37
It is also possible to prevent the healds 31 from falling off.

FIG. 10 shows another embodiment.

In this embodiment, the plate-shaped metal member of the heald 31 is cast in a straight shape and biased toward the thick wall portions 34 of the mounting portions 33a and 33b. In the case of this embodiment, although the mail holes 32 are alternately shifted, there is no actual damage and it is preferable in terms of density.

As explained above, according to the present invention, since the thick portions of the attachment portions where the ends of the metal members of the heald are located are alternately shifted, the heald density can be increased accordingly.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional general heald mounting structure for a heald frame, Fig. 2 is a front view showing a heald mounting structure for a heald frame which is an object of improvement of the present invention, and Fig. 3 is a 2 is a sectional view of FIG. 2, FIG. 4 is a sectional view of FIG. 3, FIG. 5 is an enlarged sectional view of the V section in FIG. 7 is a sectional view of FIG. 6, FIG. 8 is a sectional view of FIG. 7, FIG. 9 is a sectional view of FIG. 6,
FIG. 10 is a side sectional view showing another embodiment. 11...Heald frame, 12a, 12b...Horizontal beam, 1
4a, 14b... Fitting portion, 31... Heald, 33
a, 33b...Mounting part, 34...Thick wall part, 35...
...thin section.

Claims (1)

[Claims] 1. Fitting parts 14a, 14b extending in the longitudinal direction are formed on the upper and lower cross beams 12a, 12b of the heald frame 11, and the fitting parts 14a, 14b are provided at both ends of the metal member of the heald 31. The mounting portions 33a and 33b made of a cushioning material are fitted and locked, and the horizontal cross section of the mounting portions 33a and 33b is formed so that one side is thick and the other is thin, so that adjacent healds The thick wall portion 34 and the thin wall portion 35 are made to face each other between the mounting portions 33a and 33b of the heald 11, and both ends of the metal member of the heald 11 are offset to the thick wall portion 34 side of the mounting portions 33a and 33b. A structure for attaching heddles to a heald frame, which is characterized in that the healds are positioned in the same position.