JPS5966544A - Weft guide of 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] The present invention relates to a weft guide used in a loom.

Conventionally, weft guides that guide the weft threads of looms are usually
A large number of weft guide pieces each having a weft guide hole are arranged in parallel, and each guide hole forms a weft guide path,
The bases of the weft guide pieces are positioned in engagement grooves formed in the support block, and are integrally connected by an adhesive filled in the engagement grooves. The above adhesive is filled between each weft guide piece and between each weft guide piece and the engagement groove to connect them together. Even if the positional deviation of the weft guide piece in the central part of the engagement groove is not recognized, the position of the weft guide piece at both ends of the engagement groove may be slightly displaced toward the center, and the distance between the weft guide pieces may be reduced. It is confirmed that this will change.

Also, when bonding the above-mentioned weft guide piece and support block with adhesive, set them on a jig and use this jig to position them in highly accurate relative positions before bonding them with adhesive. Therefore, the above-mentioned jig is naturally required to have high precision and is expensive. Mass production of weft guides requires a large number of expensive jigs, but if we can shorten the time required to use the jigs to manufacture one weft guide, we can increase the efficiency of using the jigs. This means that only a small number of jigs are required.

In view of the above-mentioned circumstances, the present invention manufactures the base of each weft guide piece with the required dimensions and brings them into contact with each other,
By fixing each of the weft guide pieces to the support block in this state, a weft guide that does not change over time is provided.

Furthermore, when using the above-mentioned high-precision jig, the present invention enables quick removal from the jig by gluing each of the above-mentioned bases with a cyanoacrylate adhesive called an instant adhesive. This also makes it possible to increase the efficiency of using the jig.

The present invention will be explained below with reference to the illustrated embodiment. FIG. 1 shows a predetermined number of weft guide pieces (
1) are aligned in a line at the required relative positions, each weft guide piece (1) has a guide hole (Ia) that guides the weft thread, and a base part (1a) that is integrally connected to each other. Ib).

The above-mentioned jig may be of any structure as long as it can align a predetermined number of weft guide pieces in a line, and the jig may have comb-shaped irregularities with precisely set dimensions on the main body of the jig. so that the weft guide piece (1) is lightly press-fitted into each gate, and the guide hole (Ia) is inserted into the guide hole (Ia) of each weft guide piece (1).
If the configuration is such that a guide rod is inserted through the guide rod and connected to the main body, each of the weft guide pieces (
1) can be arranged in a line.

Therefore, the base (1b) of each weft guide piece (1)
The thickness in the alignment direction is such that when the weft guide pieces (1) are set in the jig, the bases (1b) of adjacent weft guide pieces (1) come into contact with each other. Manufactured with high precision. Therefore, when the weft guide piece (1) is set in the above-mentioned jig, the base parts (1b) will be in contact with each other.Next, cyanoacrylate adhesive is injected between the contact surfaces and each weft guide piece (1) is set in the jig. Each base (1b) of the foot guide piece (1) is integrally connected to each other. Wait about 15 minutes until the adhesive has sufficiently hardened, and then attach the weft guide piece (
If 1) is removed from the jig, that jig can be used to set the next new weft guide piece, and on the other hand,
The removed weft guide piece (1) is attached to its base (1
b) are interconnected to maintain a highly accurate relative position.

Next, as shown in Fig. 2, the base (1b) of the weft guide piece (1) is inserted into the engagement groove (2) of the support block (2).
3) and inject an epoxy or acrylic adhesive (4) into the groove (3) to connect them together to complete the weft guide (5). The jig used in this case can be manufactured at low cost since at least the most costly comb-shaped uneven portion can be omitted from the jig described above. In addition, in the weft guide (5) manufactured in this way, the bases (1b) of each weft guide piece (1) are connected to each other, so the adhesive (
4) Even if they contract due to changes over time, their mutual positions will not change.

3 and 4 show other embodiments of the present invention,
In this embodiment, the base (2) of the weft guide piece (20)
1) is formed into a rectangular parallelepiped shape, and its thickness is set with high precision as in the above embodiment, and at the same time, the bottom surface (21a) and one side surface (21b) are used as reference surfaces and manufactured with high precision. On the other hand, the bottom surface (23a) and one side surface (23b) of the engagement groove (23) of the support block (22) are connected to the reference surfaces (21a) and (2) of the weft guide piece (20), respectively.
It is set as a reference plane corresponding to 1b).

In such a configuration, one weft guide piece (20) is positioned at a desired position in the engagement groove (23) of the support block (22) with a simple jig, and the weft guide piece (20) is positioned in the longitudinal direction of the groove. By bringing the reference surfaces (20a) and (20b) of the foot guide piece (20) into pressure contact with the reference surfaces of the engagement groove (23), the other foot guide piece (1
) can be sequentially positioned based on the positioned weight guide piece (1), and the expensive jig described above is not required. Then, align each weft guide piece (1) and attach each weft guide piece (1) and support block (22) using cyanoacrylate adhesive.
After bonding them together, or holding the weft guide piece (1) together with an appropriate simple jig without using adhesive, fill it with an adhesive (24) such as epoxy. It is cured to complete the weft guide (25). Note that when a cyanoacrylate adhesive is used, the adhesive (24) may be omitted. In addition, the weft guide piece (30
), (40), positioning protrusions (32), (42) are formed on one side of each base (31), (41), and the protrusions (32), (42) are formed on the other side. (2) A matching recess (not shown) may be formed. When such protrusions (32) and (42) are formed, the reference plane (21a) formed on the base (21) is adjusted according to the shape of each protrusion.
), (21b) or both may be omitted.

Furthermore, the embodiment shown in FIG. 7 allows the weft guide piece (20), (30) or (40) shown in the above embodiment to be integrated into the support block (52) without using adhesive. This is what I did. This support block (5
2) consists of an inverted L-shaped fixing member (54) fixed to the operating member (53) of the loom, and an inverted L-shaped fixing member (54) attached to the operating member (53) with screws (55) facing this fixing member (54). It is composed of a letter-shaped holding member (56), and the surface of the operating member (53) and the inner surface of the fixing member (54) are used as reference planes. And a pair of fixing members (54), (
A positioning member (56), not shown, is fixed to the actuating member (53) at one end in the longitudinal direction, and a positioning member (56) movable along the longitudinal direction by a screw (57) is attached to the other end.
8). Further, a hard elastic member (59) is provided on the inner surface of the pressing member (56).

In this example, each weft guide piece (20)
, (30) or (40) as a pair of positioning members (58)
If they are held between the pair of fixing members (54) and (56), they can be aligned and positioned within the support block (52). In such a configuration, in the unlikely event that one of the weft guide pieces is damaged,
It is economical because only the weft guide piece can be replaced.

As described above, since the bases of the weft guide pieces of the present invention are brought into contact with each other, it is possible to manufacture a weft guide that does not change over time, and it is also possible to manufacture the weft guide easily by using an adhesive or the like. It becomes like this.

[Brief explanation of drawings]

Fig. 1 is a perspective view for explaining the manufacturing process of the weft guide shown in Fig. 2, Fig. 2 is a sectional view showing one embodiment of the weft guide according to the present invention, and Fig. 3 is another embodiment of the present invention. FIG. 4 is a sectional view of a weft guide using the weft guide piece shown in FIG. A perspective view of the guide piece, and FIG. 7 is a perspective view showing still another embodiment. (1), (20), (30), (40)...Weft guide piece (1a)...Guide hole (1b), (21), (31), (41)...Base (2)
), (22), (52)... Support block Fig. 1 Ib 1 Fig. 2 Fig. 3 Fig. 4

Claims (1)

[Claims] A weft guide for a loom, comprising weft guide pieces arranged side by side at a required interval with their bases in contact with each other, and a support block that fixedly supports the bases of the weft guide pieces.