JPS6261697B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a weft guide for a loom and a method for manufacturing the same, and provides a weft guide that can maintain high accuracy over a long period of time, as well as providing necessary materials for manufacturing the weft guide. The present invention provides a manufacturing method that can shorten the usage time of highly accurate and expensive jigs and increase their usage efficiency.

Conventionally, weft guides for guiding weft threads in looms usually have a large number of weft guide pieces each having a weft guide hole arranged side by side, each guide hole forming a weft guide path, and the bases of these weft guide pieces The support block is positioned within an engagement groove formed in the support block, and is integrally connected by an adhesive filled in the engagement groove. The above adhesive is filled between the weft guide pieces and between each weft guide piece and the engagement groove to connect them together, but due to curing shrinkage and changes over time of the adhesive, the engagement grooves may Even if the positional deviation of the weft guide pieces in the center part is not recognized, the positions of the weft guide pieces at both ends of the engagement groove are slightly shifted toward the center, and the distance between the weft guide pieces changes. It has been confirmed that

In order to solve such problems, it is conceivable to connect the bases of each weft guide piece together with connecting parts such as spacers and screws, but in order to position each weft guide piece with high precision using the above spacers, it is necessary to connect the bases of each weft guide piece together. The spacer must be manufactured with high precision, which not only increases the cost but also increases the weight of the weft guide, which impedes the speeding up of the loom.

Also, when bonding the above-mentioned weight 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 has been developed by inserting the bases of the weft guide pieces arranged in parallel at required intervals into the engagement grooves of a support block removably attached to the loom, and applying an adhesive into the engagement grooves. In the weft guide for a loom, in which the bases of each of the weft guide pieces are connected and fixed to a support block by filling the weft guide, the bases of the weft guide pieces are integrally connected to each other with a first adhesive containing a hard substance, Furthermore, the bases of the weft guide pieces connected together with the first adhesive are placed in the engagement grooves, and the first adhesive and the bases of each weft guide pieces are applied to the support block with a second adhesive. It is designed to be glued together.

According to such a configuration, even if the second adhesive changes over time or changes in temperature, the first adhesive containing the above-mentioned hard material can keep the weight guide pieces together. Since they are integrally connected, displacement of each weft guide piece can be effectively prevented and high accuracy can be maintained over a long period of time.

In addition, the first adhesive containing the hard material can be manufactured at a lower cost and lighter weight than when connecting parts such as spacers and screws are used, and therefore can be manufactured over a long period of time. It is possible to maintain high accuracy and at the same time does not hinder the speeding up of the loom.

Further, in the manufacturing method of the present invention, after attaching a plurality of weft guide pieces to a jig and arranging the weft guide pieces in parallel at required relative positions, the plurality of weft guide pieces supported and fixed by the jig are After each base is integrally connected to each other with the first adhesive containing a hard material, the weft guide pieces are removed from the jig, and then the weft guide pieces that are integrally connected with the first adhesive are removed. The base is fitted into the engagement groove of a support block that is removably attached to the loom, and a second adhesive is filled in the engagement groove, and the second adhesive is used to connect the base of the weft guide piece to the support block. The blocks are glued together.

According to such a manufacturing method, at the stage where the bases of the weft guide pieces are integrally connected to each other with the first adhesive, the weft guide pieces are removed from the jig for positioning the weft guide pieces relative to each other with high precision. You can now remove things, and the first
Since the time required to connect the weft guide pieces with adhesive can be relatively short, the efficiency of using the above-mentioned highly accurate and expensive jig can be increased.

The present invention will be described below with reference to the illustrated embodiments.
Fig. 1 shows a state in which a predetermined number of weft guide pieces 1 are aligned in a line at required relative positions using a jig (not shown), and each weft guide piece 1 has a guide hole for guiding the weft. 1a and a base portion 1b integrally connected to each other. The above-mentioned jig may have any structure as long as it can align a predetermined number of weft guide pieces in a line, and the jig may have comb-like irregularities with strictly set dimensions on the main body of the jig. so that the above-mentioned weft guide piece 1 is lightly press-fitted into each recess,
In addition, by inserting a guide rod into the guide hole 1a of each weft guide piece 1 and connecting the guide rod to the main body, each weft guide piece 1 can be arranged in a line. can be aligned.

After each of the weft guide pieces 1 is aligned in a line, the temporary block 2 is then set at a predetermined position on the jig (not shown), as shown in FIG. Along its longitudinal direction, this temporary block 2
It has an engagement groove 3 that is shallower and narrower than the original support block to which the weft guide piece 1 is attached, and in its set state, the base 1b of each weft guide piece 1 is positioned within the engagement groove 3. I'm starting to do that.

The inner surface of the engagement groove 3 is coated with a mold release agent in advance and then filled with a powdery or granular hard material 4 such as alumina or silica, and when the temporary block 2 is set in the jig, each guide piece 1 base 1b
is inserted into the hard material 4 by an optimum amount. Next, when a cyanoacrylate adhesive is injected into the hard material 4, the powdered or granular hard material 4 and each weft guide piece 1 are bonded together by the cyanoacrylate adhesive, which is called an instant adhesive. They are joined together in a short time by the agent. Note that the hard material 4 cannot be omitted because the cyanoacrylate adhesive requires that the objects to be adhered are substantially in contact with each other. Furthermore, when using the original support block having an engagement groove of sufficient depth, the depth of the hard object becomes deeper, and the weight guide piece 1 may not be inserted to a predetermined depth, or the adhesive may not be sufficiently applied to the bottom of the block. No inflow,
There is a risk of poor adhesion.

After waiting for about 15 minutes until the adhesive has sufficiently hardened, the weft guide piece 1, which is integrally connected by the connecting member 5 formed by the hard material 4 and the adhesive, is removed from the jig. Also, the connecting member 5 is removed from the engagement groove 3 of the temporary block 2.
As a result, the jig can be used to set the next new weft guide piece, and on the other hand, the removed weft guide piece 1 is maintained in a highly accurate relative position with respect to each other by the connecting member 5. be done.

Next, as shown in FIG. 3, the base of the weft guide piece 1 and the connecting member 5 are inserted into the engagement groove 7 of the support block 6, and an epoxy or acrylic material is inserted into the groove 7. The weft guide 9 is completed by injecting adhesive 8 to connect them together. At this time, the adhesive 8 may contain a hard material such as alumina or silica. The jig used in this case is inexpensive because at least the most costly comb-shaped uneven portion can be omitted from the jig described above. Alternatively, an engaging part for positioning is formed when the connecting member 5 is hardened and formed, and this is engaged with an engaging part provided in the engaging groove 7 of the support block 6 to perform positioning. By doing so, the use of jigs can be omitted.

The weft guide 9 manufactured in this way is
Since each weft guide piece 1 is connected by a hard connecting member 5 that does not change over time, even if the adhesive 8 changes over time, the connecting member 5 resists the change and the weft guide piece 1 The mutual relative positions will be maintained in a highly accurate state for a long period of time.

As described above, in the present invention, the bases of the weft guide pieces are integrally connected to each other with a first adhesive containing a hard material, and the first adhesive and the bases of each weft guide piece are connected together. Since they are integrally bonded to the support block with the second adhesive, even if the second adhesive changes over time, the first adhesive containing the above-mentioned hard material will maintain the relative positions of the weight guide pieces. High accuracy can be maintained. The first adhesive containing the hard material can be manufactured at a lower cost than when connecting parts such as spacers are used, and it can also be manufactured to be lightweight, so it does not hinder the speeding up of the loom. The effect is that there is no

Furthermore, in the manufacturing method of the present invention, the bases of the weft guide pieces attached to the jig are connected together with the first adhesive containing a hard substance, and then removed from the jig. This has the effect of increasing the efficiency of using highly accurate and expensive jigs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the manufacturing process of the method of the present invention;
FIG. 2 is a sectional view showing a manufacturing process subsequent to the manufacturing process shown in FIG. 1, and FIG. 3 is a sectional view of the completed weft guide. 1...Weft guide piece, 1b...Base,
2... Temporary block, 3, 7... Engaging groove, 4... Hard material, 5... Connecting member, 6... Support block, 8
……glue.

Claims (1)

[Claims] 1. Inserting the bases of the weft guide pieces arranged in parallel at required intervals into the engagement grooves of a support block removably attached to the loom, and filling the engagement grooves with adhesive. In the weft guide for a loom, in which the base portions of the weft guide pieces are connected and fixed to a support block, the base portions of the weft guide pieces are integrally connected to each other with a first adhesive containing a hard substance, and The base of each weft guide piece connected together with a first adhesive is placed in the engagement groove, and the first adhesive and the base of each weft guide piece are connected together with a support block using a second adhesive. A loom weft guide characterized by being glued. 2. After attaching a plurality of weft guide pieces to a jig and arranging the weft guide pieces in the required relational positions, each base of the plurality of weft guide pieces supported and fixed by the jig is 1st
Once the weft guide pieces have been integrally connected to each other with adhesive, they are removed from the jig, and then the bases of the weft guide pieces that have been integrally connected with the first adhesive are attached to a support that is removably attached to the loom. It is characterized by fitting into the engagement groove of the block, filling the engagement groove with a second adhesive, and bonding the base of the weight guide piece and the support block together with the second adhesive. A method for manufacturing a weft guide for a loom.