JPH0262615B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing a patterned double pile fabric mainly used for upholstery, carpets, etc. This invention relates to a weaving technique for pile fabrics that forms cut piles by cutting them open.

(Prior art) Conventionally, in order to weave patterned double pile fabrics, the running position (height) of the shuttle remains unchanged as shown in Figure 2, and the upper fabric,
There was an opening for the lower cloth.

For example, when weaving the double pile fabric shown in FIG. 3, it was common to weave in the order of 1, 2, 3, and 4 in FIG.

1, 2, 3, and 4 attached to the bottom of FIG. 3 correspond to 1, 2, 3, and 4 in FIG.

In addition, as a second conventional method, two pile yarns 29 and 30 are crossed as shown in FIG. A method is known in which two weft threads 21 and 22 for lower fabric are driven in at the same time.

(Problems to be Solved by the Invention) However, the above conventional method had the following drawbacks. That is, a uniform pile can be obtained by inserting a spacing regulating plate to limit the spacing between the upper and lower fabrics, but in the first conventional method, the spacing regulating plate collides with the shuttle, making it impossible to weave. (1) As shown in Fig. 2 1 to 4, the ground thread 1,
The balance between the numbers of the upper and lower threads of threads 2, 3, and 4 is 3:1 or 1:3, and the position of the opening is pulled toward the side with the larger number of ground threads, so each time the number balance changes, the sheds 8, 8' , 9, 9' move up and down.

For example, in 1 of FIG. 2, there is one ground thread with the top end, ground thread 3, and there are three ground threads, ground threads 1, 2, and 4, with the bottom end. On the other hand, in Fig. 2, there are three ground threads that point upward, ground threads 1, 3, and 4, and there is one ground thread that points downward, ground thread 2.

Therefore, the distance d between the upper fabric and the lower fabric is difficult to be uniform, and the pile length becomes uneven.

In particular, when shedding pile yarns with a jacquard, passive feeding is used, making it difficult to control the yarn tension compared to beam feeding, and this drawback is more likely to occur.

(2) As mentioned above, because the sheds 8, 8', 9, and 9' move up and down due to fluctuations in the tension of the ground thread, the
It was necessary to increase the angles of 8', 9, and 9'.

In addition, the second conventional method involves weaving a double pile fabric in which one weft is driven to form one pile, and the piles are arranged in one warp and warp row, as shown in Figure 3. I can't.

Furthermore, since two weft yarns are driven and reeded at the same time, it is difficult to weave with a high density of weft yarns.

In addition, in the second conventional method, although the collision between the spacing regulating plate and the shuttle can be avoided, twice the number of pile threads is required as in the first conventional method, which makes it difficult to sort the warp threads. This had the disadvantage that the thickness of the pile yarn that could be used was limited because the yarns rubbed against each other in the reed.

In addition, to weave the pattern double pile, Jiaquard is used, but the number of pile yarns is twice as much as that of the first conventional method, and the number of Jacquards to be controlled is also doubled, requiring a large investment in equipment.

(Means for Solving the Problems) As a result of intensive research to solve the above-mentioned drawbacks, we have come up with the following invention.

That is, the first invention is a method for weaving a double pile fabric, characterized in that a shed for the upper fabric and a shed for the lower fabric are opened in a vertical relationship with each other, and the weft is inserted. Weft insertion and weft insertion for lower fabric are
They are performed at different times with different opening conditions.

In the present invention, "a weaving method in which a shed for the upper fabric and a shed for the lower fabric are opened in a vertical positional relationship with each other and the weft is inserted" means that the sheds for the upper fabric and the lower fabric when opened are It suffices if the positions are above and below each other.
Therefore, the openings in the upper cloth and the openings in the lower cloth do not necessarily have to be formed at the same time.

The second invention is to repeat the following steps (1) to (4) in sequence with a gap regulating plate inserted between the upper fabric and the lower fabric to make the interval between the upper fabric and the lower fabric constant. This is a method of weaving a double pile fabric according to the first invention.

(1) Perform weft insertion for upper fabric at a position above the interval regulating plate.

(2) Change the opening state of the warp threads.

(3) Perform weft insertion for the lower fabric at a position below the interval regulating plate.

(4) Change the opening state of the warp threads.

A third invention is the method of weaving a double pile fabric according to the first invention or the second invention, in which the shuttle box is moved up and down in synchronization with the rotation of a loom to insert the weft.

A fourth invention is the first invention or the second invention, in which the weft inserter for the upper fabric and the weft inserter for the lower fabric are carried out by arranging shuttles in two stages, upper and lower, and selectively driving either the upper or lower shuttle. This is a method for weaving a double pile fabric according to the second invention.

And, in the fifth invention, at the time of opening, the falling ground thread for the upper fabric 6 and the rising ground thread for the lower fabric 5 are substantially parallel to each other and substantially on an extension line of the woven fabric,
In the method of weaving a double pile fabric according to the first to fourth inventions, the ground thread for the upper fabric and the ground thread for the lower fabric are in a substantially symmetrical positional relationship with the extension line as an axis of symmetry, and Preferably, the pile yarn is opened by a jacquard machine to weave a patterned double pile fabric.

The present invention differs in purpose, structure, and effect from the method of simultaneously driving the weft yarns of the upper fabric and lower fabric of double pile fabric. That is, in a high-density patterned double pile fabric, the method of driving the weft yarns of the upper fabric and the lower fabric one by one is more suitable than the method of driving two weft yarns at the same time because it allows for a greater number of weft yarns to be implanted. Also, when weaving a normal patterned double pile fabric in which one weft is inserted to form one pile as shown in Fig. 3,
It is impossible to drive the weft threads of the upper and lower fabrics at the same time.

(Function) The weaving method of the present invention will be explained in detail in FIGS. 1 to 4 by taking as an example the case of weaving the double pile fabric shown in FIG. The ground yarn 3 for the fabric is located above the extension line of the woven fabric, and the ground yarn 4 for the upper fabric and the ground yarn 1 for the lower fabric are
They are almost parallel to each other and are on an extension of the fabric.
The lower cloth ground yarns 2 are located below the extension line of the upper fabric and are symmetrical to the upper fabric base yarn 3 with the extension line of the upper fabric as an axis of symmetry.

Therefore, the ground yarns 1, 2, 3, and 4 are balanced by 3 having upward tension, 2 having downward tension, and 1 and 4 being neutral. The shuttle runs through the upper fabric weft insertion position 12 between (upper fabric ground yarn 3 and pile yarn P) and (upper fabric ground yarn 4).

Next, as a second step, the state shown in FIG. 1 and 2 is achieved.
That is, the upper cloth ground yarn 4 is located above the extension line of the woven fabric, and the upper fabric ground yarn 3 and the lower fabric ground yarn 1 are parallel to each other and are substantially on the extension of the woven fabric. and,
The lower cloth ground yarns 2 are located below the extension line of the upper fabric, and are symmetrical to the upper fabric base yarns 4 with the extension line of the upper fabric as an axis of symmetry. The pile yarn P is located below the weft insertion position 13 for the lower fabric.

In this case, as in the first step, the upward and downward tensions of the ground yarn are balanced. Then, the shuttle runs through the lower cloth weft insertion position 13 between (lower cloth ground yarn 1) and (lower cloth ground yarn 2 and pile yarn P).

Thereafter, a double pile fabric as shown in FIG. 3 can be woven by similarly maintaining the vertical balance of the ground yarn in the order of FIG. 1, 3 and 4.

In addition, in order to provide the above-mentioned weft insertion positions in the upper and lower tiers, there is a method of moving the shuttle box up and down in synchronization with the loom, or a method of arranging shuttles in the upper and lower tiers and driving either the upper or lower shuttle selectively. Any method may be used to do this, such as inserting the weft on either the top or bottom of a shuttleless loom.

After weaving in this manner, it is cut open at the cut position 15 to form two pile fabrics.

Of course, the above-mentioned cutting may be taken off the loom and performed using another cutting machine.

(Effect) With the above method, the effects seen in the first conventional method,
The loom of the first conventional method does not collide with the spacing regulating plate and can weave without requiring twice the number of pile threads compared to the second conventional method, which uses two shuttles at the same time. At the same time, the handling of the pile yarn is improved, and the cross pile in the reed feathers29,30
Thick pile threads can now be used without any friction.

In addition, it has become possible to weave a double pile fabric in which one weft is driven to form one pile as shown in Figure 3, which was impossible with the simultaneous two-pile method. It became possible to weave high-density pile fabrics. In addition, the unbalance of the thread tension between the top and bottom of the base yarn at the time of shedding is constant at any time of shedding, and the spacing between the upper and lower fabrics is constant, so the pile length is uniform, and the horizontal step due to the difference in height of the pile The occurrence of such problems has been reduced, and even if the pile length is set low, the product's standard pile length can be met, resulting in cost reductions.

In particular, when pile yarn is opened using a jacquard, tension control is difficult due to passive feeding compared to active beam feeding, and the present invention is particularly effective. In addition, since the thread sheds 8, 8', 9, and 9' are difficult to move up and down, the angle of the sheds can be made small.
In addition, the shed is less affected by the tension of each thread,
Easy to set up the shed.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an example of the weaving method of the present invention, which is repeated in the order of 1, 2, 3, and 4. FIG. 2 is a schematic side view of a conventional double pile fabric weaving method, which is repeated in the order of 1, 2, 3, and 4. Figure 3 shows an example of the structure of a double pile fabric, and the positions 1, 2, 3, and 4 in the figure correspond to 1, 2, 3, and 4 in Figures 1 and 2. There is. FIG. 4 is a schematic side view showing a conventional method of weaving a double pile fabric in which upper and lower fabrics are simultaneously put together. 1, 2... Ground thread for lower fabric, 3, 4... Ground thread for upper fabric, 7... Pile, 10, 10'... Ground thread shed for upper fabric, 11, 11'... Ground thread shed for lower fabric. , 12...
...Weft inserting position for upper fabric, 13... Weft inserting position for lower fabric, 14... Weft inserting position, 16... Cloth surface, 21...
...Weft inserting position for upper fabric, 22... Weft inserting position for lower fabric, 23... Shed for upper fabric, 24... Shall for lower fabric,
25, 26...Top fabric thread, 27,28...Bottom fabric thread, 29,30...Pile thread.

Claims (1)

[Claims] 1. In a weaving method in which a shed for the upper fabric and a shed for the lower fabric are opened in a vertical positional relationship with each other and weft insertion is performed, the weft insertion for the upper fabric and the weft insertion for the lower fabric are performed. A double pile fabric weaving method characterized in that the weaving is performed at different times with different opening conditions. 2 With the spacing regulating plate inserted between the upper and lower fabrics to keep the distance between the upper and lower fabrics constant, perform the following (1).
A method for weaving a double pile fabric according to claim 1, characterized in that steps (4) to (4) are repeated in sequence. (1) Perform weft insertion for upper fabric at a position above the interval regulating plate. (2) Change the opening state of the warp threads. (3) Perform weft insertion for the lower fabric at a position below the interval regulating plate. (4) Change the opening state of the warp threads. 3. A method for weaving a double pile fabric according to claim 1 or 2, characterized in that weft insertion is carried out by moving a shuttle box up and down in synchronization with the rotation of a loom. 4 Move the shuttle up and down 2 for the weft inserter for the upper fabric and the weft inserter for the lower fabric.
A method for weaving a double pile fabric according to claim 1 or 2, which is carried out by arranging the fabric in stages and selectively driving either the upper or lower shuttle. 5. At the time of opening, the ground yarn for the upper fabric and the up fabric thread for the lower fabric are almost parallel to each other, and are almost on the extension line of the woven fabric, and the ground yarn for the upper fabric and the ground yarn for the lower fabric are in a substantially symmetrical positional relationship with respect to the extension line as an axis of symmetry, and the weft insertion for the upper fabric and the weft insertion for the lower fabric are performed at different times in different opening states. A method for weaving a double pile fabric according to items 1 to 4.