JPH0768659B2 - Reed device for weaving fabrics with varying width - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weaving method and a structure of a reed device for weaving a fabric whose width varies in the longitudinal direction.

The fabric having a variable width is, for example, as shown in FIG. 6 (a), a fabric in which a warp yarn a and a weft yarn b are woven. d and d are alternately formed, and a tapered portion e having a gradually changing width is formed between the wide width portion c and the narrow width portion d. Thus, this kind of fabric is a tape or belt-shaped fabric, for example, a shoulder belt of a camera or radio, a hand strap of a small camera or ski stock, a wristwatch band, a tie, an automobile seat belt, various FRPs. It has a wide range of uses as a reinforcing material for molded products.

2. Description of the Related Art Conventionally, as a technique for manufacturing a woven fabric of this kind having a variable width, for example, JP-A-53-6145 and JP-A-55-80538 are known.
The one described in Japanese Patent Publication is known. This one is
Using a fan-shaped reed device in which the wings are arranged radially,
By moving the reed device up and down, the spacing between the reeds at the weaving position is changed to change the width of the fabric.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in this one, since the reed wing is provided obliquely with respect to the woven surface on both sides of the reed, the warp yarn is It is rubbed strongly and is easily worn to cause fuzz.

Further, since the reed originally has a function of guiding the opening of the warp thread, its height needs to be at least not less than the opening amount at the reed position. However, in the reed device, in addition to that, it is necessary to move up and down in order to change the width of the fabric, and it is necessary to have a height that is equal to the warp yarn opening amount in the range of the up and down movement, which is very large. Will be things.

Further, in the above-mentioned reed, the reeds are arranged radially, and as described above, in order to induce the opening movement of the warp, the reeds are extended further below the narrow portion of the fabric. Since it is necessary, the width of the reed at the bottom is smaller than the width of the narrow part of the fabric,
The spacing between the combs is extremely small. Therefore, warp threads may be caught between these small tails and the opening movement of the warp threads may be hindered.If the spacing between the tails is increased to prevent this, the tail density is sufficiently wide in the wide part of the fabric. It cannot be made very large, and tendencies tend to occur in the fabric.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a reed device that can smoothly weave a woven fabric with a variable width and good appearance.

Means for Solving the Problems In the reed device of the present invention, a pair of rotating members are rotatably attached to a frame that is fixedly supported with respect to the loom while maintaining parallel to each other. It is characterized in that a plurality of combs are spread in parallel to each other between the rotating members.

FIG. 1 shows a reed device according to the present invention, in which the reed wings are kept parallel to each other while the distance therebetween is changed. Reference numeral 1 denotes a frame, which is composed of upper and lower girders 2 and 3 and left and right side girders 4 and 4, and a window 5 is formed in the center thereof.

Reference numeral 6 denotes a support member, which is provided so as to be vertically movable with respect to the loom by a driving means (not shown) provided above. One ends of link arms 7 and 7 are rotatably coupled to both ends of the support member 6, and one ends of connecting members 8 and 8 are rotatably connected to the other ends of the link arms 7 and 7, respectively. Installed on.

Rotating members are provided on the upper and lower parts of the connecting members 8 and 8, respectively.
One end of each of 9,9,10,10 is rotatably supported, and the other end of the rotating member 9,9,10,10 is provided with a pin 11,9 at the center of the upper beam 2 or the lower beam 3. It is rotatably supported by 12. By operating the support member 6 to move the connecting members 8 and 8 up and down, the upper rotating members 9 and 9 and the lower rotating member 1
While being parallel to 0 and 10, they rotate with respect to the frame 1. Then, between the rotating members 9, 9 and the rotating members 10, 10, a plurality of comb blades 13 are stretched in parallel with each other.

When weaving a woven fabric using this reed device,
The warp yarn a of the fabric is fed from the creel, passes through the heald mail, passes through the window 5 of the frame 1 and further between the combs 13, and reaches the weave of the fabric. Then, by moving the heald up and down, an opening is formed in front of the reed device, the weft thread b is inserted there, and is struck by the reed device into the weft to weave the fabric.

Thus, in the reed device of the present invention, when the support member 6 is moved upward as shown by the solid line in FIG.
The connecting members 8 and 8 are moved upward via the rotating members 9 and 9 and the rotating members 10 and 10 are kept parallel to each other, and both ends rotate upward with the pins 11 and 12 as fulcrums. It becomes almost horizontal.
In this state, the spacing between the tails 13 is large, and when the fabric is woven using the reed device in this state, the spacing between the warp threads a is large and the wide portion c of the fabric is woven.

Next, when the supporting member 6 is gradually moved downward while weaving the woven fabric, the connecting members 8 and 8 are moved downward via the link arms 7 and 7,
The rotating members 9 and 9 and the rotating members 10 and 10 rotate so that both ends of the rotating members 9 and 9 move downward with the pins 11 and 12 as fulcrums while keeping parallel to each other. As a result, the spacing between the combs 13 is gradually reduced, the width of the fabric is gradually narrowed, and the taper portion e of the fabric is woven.

When the supporting member 6 is further moved downward, the connecting members 8 and 8 are moved downward via the link arms 7 and 7 as shown by the chain line in FIG. 1, and the rotating members 9 and 9 and the rotating member 10 and 10 is inclined at a large angle, and the spacing between the tails 13 is reduced. Therefore, in the woven fabric woven in this state, the intervals between the warp threads a are small, the width of the woven fabric is small, and the narrow width portion d is woven.

Next, when the support member 6 is moved upward again, the link arm
7,7, the rotating member 9,9 and the rotating member 10, via the connecting member 8,8,
10 rotates upward, the interval between the tails 13 gradually increases, the width of the fabric gradually increases, and the tapered portion e
Is formed.

Thus, by vertically moving the support member 6 in this manner, the spacing between the tails 13 is expanded or reduced while maintaining the parallel relationship with each other, and the spacing between the warp threads a is changed to change the width of the fabric. It is possible.

Embodiments The bait device of the present invention is not limited to the one shown in FIG. 1 and can be modified as appropriate. FIG. 2 shows an embodiment thereof, in which the rotating members 9 and 10 are each a single member,
At the center thereof, the pins 11 and 12 are pivotally supported on the frame 1 so as to be rotatable. Also in this example, by rotating the rotating members 9 and 10, the interval between the tail blades 13 is changed to change the width of the fabric, and the fabric having the form as shown in FIG. 6 (a) is woven. can do.

FIG. 3 shows another embodiment, and like the example of FIG. 2, the rotating members 9 and 10 are made of a single member and are pivotally supported so as to rotate about one end thereof. As shown in FIG. 6 (b), a woven fabric is formed in which one edge of the woven fabric extends linearly and only the other edge has irregularities.

FIG. 4 shows still another embodiment, one end of which is a rotating member 9, 9 which is rotatably supported by pins 11 and 12 in the center of the upper girder 2 and the lower girder 3 of the frame 1. Extension members 14, 14, 15, 15 which are vertically movable while maintaining a horizontal state are rotatably coupled to the free ends of the rotation members 10, 10, respectively. Member 10,10 to extension member 14,14,15,1
The feather wings 13 are attached over the length of 5. According to this example, as shown in FIG. 6 (c), the warp yarn density at both ends of the fabric is constant, and the warp yarn density changes only in the central portion, so that a fabric having a varied width can be obtained.

FIG. 5 shows still another embodiment, in which rotating members 9 and 9 and rotating members 10 and 10 are respectively connected to both ends of fixing members 16 and 17 fixedly attached to the frame 1. It is mounted so that it can move freely from the fixing members 16, 17 to the rotating members 9, 9, 10, 10.
The tail 13 is attached to the bottom. According to this example, as shown in FIG. 6 (d), the warp yarn density at the central portion of the fabric is constant, and the width is changed by changing the warp yarn density only at both edges, thereby obtaining a fabric.

Further, by appropriately combining these mechanisms, it is possible to weave a woven fabric with more variety.

Further, the method of the present invention is not limited to a method of rotating the rotating members 9, 9, 10, 10 as a means for changing the interval of the tail feathers 13, but it can be changed by another appropriate method. May be.

EFFECTS OF THE INVENTION According to the present invention, the tails 13 are always kept parallel to each other, and the intervals thereof are changed. Therefore, the tails 13 are always kept parallel regardless of the size of the interval. The warp threads a open along the parallel feathers 13. Therefore, the warp thread a is not strongly rubbed by the tail 13 and worn or fluffed during the opening movement.

Further, since the reeds 13 are always parallel to each other even if the intervals thereof change, there is no locally narrowed portion, and the warp thread a has the reeds a.
It does not interfere with the opening movement by slipping into 13,
Further, since the number of the combs 13 can be sufficiently increased, the woven fabric is less likely to have the streaks.

Further, the reed device of the present invention has a simple structure, the reeds 13 can be freely changed while keeping the reeds 13 in parallel, and the reed device 13 does not become larger than necessary.

[Brief description of drawings]

FIG. 1 is a front view of the reed device of the present invention. 2 to 5 are schematic front views showing an embodiment of the reed device of the present invention. FIG. 6 is a plan view showing various structures of a woven fabric having a variable width woven according to the present invention. 1 ... Frame, 9,10 ... Rotating member, 13 ... Osawa

Claims (1)

[Claims] 1. A rotating member (9, 10) forming a pair is rotatably attached to a frame (1) fixedly supported with respect to a loom while maintaining parallel to each other. Saw device for weaving woven fabrics of varying width, characterized in that a plurality of comb wings (13) are spread in parallel with each other.