JPS6119742B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing belt-shaped fabrics such as various safety belts.

Conventionally, methods for producing belt-shaped fabrics such as various safety belts have been the usual so-called warping method, in which a required number of warp yarns are wound around a beam and woven, and the creel method, in which, for example, threads are added in advance and the warp threads are wound around a bobbin. There is the so-called direct creel method, in which the required number of yarns are pulled out from the creel and supplied to the loom for weaving, and the unfinished yarn is wound around a bobbin and placed on a creel, and the required number of unfinished yarns are pulled out from the creel. A direct creel method is known in which the yarn is pulled out and fed as is to a loom for weaving.

However, the following problems arise in the method of weaving using added yarns as warp yarns. In other words, thread twisting is not normally done within the textile manufacturer but is outsourced to an outside tensioning company; However, it was inconvenient that the degree of twist could not be changed during the weaving process.
In addition, the same length of yarn is not always wound around each bobbin, and the yarn is wound unevenly, resulting in wasted yarn. Furthermore, the length of the yarn wound around the bobbin is usually shorter than that of raw yarn;
For this reason, it took time and effort to connect the yarns together during weaving, and the knotted portions became defective and had to be discarded. Furthermore, in addition to requiring a period of time for joining, a rewinding process after joining and a warping process are required when winding the warp yarns around the beam.

On the other hand, in the method of weaving directly from a creel using unfinished yarn as warp yarn, large
Since the yarn from the package is used as it is, there is almost no need to connect the yarn together during weaving, there is no need for rewinding or warping, and there is no need to send the yarn to an outside adding company. Although the manufacturing efficiency is much better than the former method because there is no need to ask for There were some problems with the weaving process, and the threads were prone to breakage and fuzzing during weaving, and when this became severe, the loom had to be stopped to restore normal operation, which was a hassle.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a method for producing a belt-shaped fabric that has good production efficiency and can produce products of good quality.

That is, the present invention provides a method for producing a belt-like fabric in which the unwound yarn (filament yarn) is pulled out from a creel on which a required number of bobbins wound with unwound yarn (filament yarn) are wound and fed to a loom for weaving. The present invention is characterized in that, while the unstretched yarn is drawn out and fed to the loom, it is simultaneously tensioned by a tensioning mechanism attached to each bobbin on the creel.

Examples of the present invention will be described below.

In this example, the required number of bobbins wound with unfinished yarn, for example, about 60 to 80 (in this explanation, 60 to 80
(This example is not limited to this), and while the unfinished yarn is pulled out from each bobbin and fed to the loom as warp yarn,
A twisting mechanism attached to each bobbin on the creel rotates the bobbin to add twist at the same time as weaving. A loom weaves a belt-like fabric using the twisted warp threads. The degree of twist is determined by changing the rotational speed of the bobbin depending on the winding speed of the weaving.

In addition to a mechanism that rotates a bobbin wound with unfinished yarn, the mechanism for adding twist may include, for example, rotating a flyer with a moderate force slightly offset from the rotation of the bobbin to pull out the untwisted yarn from the bobbin. There are also mechanisms that can sometimes add twist and set the pull-out tension at the same time.

As mentioned above, if you use unfinished yarn and add tension to it before it is fed from the creel to the loom, it will be resistant to abrasion and have a strong stiffness.
Not only can the quality be the same or better than that of a belt-like fabric woven using pre-added yarn, but
There is the advantage that the woven product can be checked during weaving and changes can be made on the spot as often as necessary and desired.

Next, an example of an apparatus for carrying out the above method will be explained with reference to FIGS. 1 to 4.

In the figure, reference numeral 1 is a creel, 2 is a bobbin wound with unfinished yarn A (filament yarn), 3 is a loom, and 4 is a winding roller of the loom 3.

The creel 1 is provided with a plurality of horizontal frames 5 (five stages in the drawing), a plurality of bobbins 2 are arranged in parallel on each horizontal frame 5, and unadded yarn A is added from each bobbin 2. The yarns are supplied to the loom 3 as warp yarns. Also,
A drive device 6 and a transmission 7 are arranged on one side of the creel 1 (left side in FIG. 1).

A belt 8 is provided between the drive device 6 and the transmission 7, as shown in FIGS. 2 and 3, so that the rotation of the drive device 6 is transmitted to the transmission 7. A pulley 10 is attached to the output shaft 9 of the transmission 7.
(See Figure 2) is provided, and this pulley 1
0 rotation is belts 11, 12, 13 and creel 1
The power is transmitted to a pulley 18 fixed to a spindle drive shaft 17 provided along each horizontal frame 5 via intermediate pulleys 14, 15, 16 provided at approximately mid-height positions on one side. There is.
This causes each spindle drive shaft 17 to rotate in the same direction (see FIG. 3).

The spindle drive shaft 17 is provided with a bevel gear 20 (see FIG. 2) corresponding to each bobbin 2. As shown in FIG. 4, this bevel gear 20 is located at one end of the spindle 21 ((left side in FIG. 4)).
It meshes with a bevel gear 22 fixed to. The spindle 21 is supported in a substantially horizontal state by a bearing portion 23 fixed to the horizontal frame 5 so as to be perpendicular to the spindle drive shaft 17 . A support cylinder 2 is provided on the other end side of the spindle 21 (on the right side in Fig. 4).
4 is externally fixed and the above-mentioned bobbin 2 is supported by this support cylinder 24, and the bobbin 2 is rotated by the rotational driving force transmitted from the spindle drive shaft 17.
is now being rotated. The rotation direction of the bobbin 2 is set to be opposite to the winding direction of the unwound yarn A, that is, the direction in which the unwound yarn A is unraveled. Further, the rotation speed of the bobbin 2 can be varied by the aforementioned transmission 7, and the faster the rotation speed of the loom 3 relative to the take-up roller 4 (when the rotation speed of the take-up roller 4 is kept constant), the more You can add more, and conversely, if you slow down, less will be added.

A flyer 26 is rotatably inserted between the bearing portion 23 of the spindle 21 and the support tube 24 . A release tension adjusting member 27 is provided between the flyer 26 and the bottom 24a of the support tube 24. The tension adjustment member 27 has a hollow threaded part 28 that has a knob at one end and is screwed onto the flyer 26, and is fitted into the threaded part 28 so as to be movable in the axial direction, and is attached to the bottom part 24a. It is composed of a brake shoe 29 in contact with the brake shoe 29 and a spring 30 provided in the threaded portion 28 and urging the brake shoe 29 toward the bottom portion 24a, so that the flyer 26 rotates in the same direction with a delay of a predetermined interval relative to the bobbin 2. Rotation is transmitted (frictional transmission) from the support tube 24 to the flyer 26 in this manner. Due to this delay of the flyer 26, unraveling tension is applied to the untied yarn A, thereby preventing it from unraveling into pieces.
When the threaded part 28 is screwed in and the spring 30 is strongly compressed, the unloaded thread A is strongly pulled out (unraveling and the tension becomes stronger).On the other hand, when the threaded part 28 is loosened and the spring 30 is weakly compressed, the unloaded thread A is pulled out. Thread A
is pulled out lightly (the tension becomes weaker). The degree of delay and the unwinding tension of the flyer 26 are varied depending on the rotational speed (winding speed) of the winding roller 4 of the loom 3, the thickness of the unwound yarn A, the amount of winding, etc.

A support pipe 32 is provided at one end of the fryer 26 in substantially parallel to the spindle 21. The support pipe 32 has fixed Snell wires 33 at one end position and approximately the middle position in the axial direction, respectively.
34, and a movable Snell wire 35 is movably provided at the other end in the axial direction. This movable Snell wire 35 is biased toward the other end of the support pipe 32 (left side in FIG. 4) by a spring 36 provided within the support pipe 32, and is prevented from unraveling due to variations in the delay of the flyer 26. It is designed to adjust for variations in tension. The unfinished yarn A is pulled out from the bobbin 2,
First, it is hooked onto the movable Snell wire 35 through the fixed Snell wire 34 at the intermediate position, and is folded back by the movable Snell wire 35 and then fixed again on the fixed Snell wire 35.
4 to a fixed Snell wire 33 at one end position, and from the fixed Snell wire 33, it is guided to the loom 3 via a yarn guide on a creel, a warp pulling and aligning roller 40. In FIG. 1, 41 is a heald, and 42 is a lead.

According to the above device, the spindle drive shaft 1
7. A tensioning mechanism is constituted by a spindle 21, a flyer 26, a release tension adjustment member 27, etc., and when the drive device 6 is operated, each spindle is driven via a transmission 7, intermediate pulleys 14, 15, 16, etc. Rotation is transmitted to the shaft 17, and each spindle 21 is rotated by the spindle drive shaft 17. As a result, the unadded yarn A from each bobbin 2
is pulled out, a predetermined unraveling tension is applied by the flyer 26, and the yarn is supplied to the loom 3, and at the same time, the unfinished yarn A is applied. The degree of twist can be adjusted by changing the rotational speed of the bobbin 2 using the transmission 7, and when it is desired to add more twist, the rotational speed of the bobbin 2 is increased. If the spring 36 is too strong, the compression spring may be replaced with an extremely weak extension spring, or it may be omitted. Further, the Snell wires 33, 34, 35 may be made of eyelets made of alumina or titanium porcelain. Furthermore, the fryer tension adjustment devices 27, 24a are not used if too much tension is applied.

As explained above, according to the method of the present invention, an unadded yarn is used, and while the unadded yarn is drawn out from the bobbin and fed to the loom, a adding mechanism attached to each bobbin of the creel is used. Since the twisting is done at the same time, it is possible to easily change the degree of twist during the weaving process, which was previously impossible, and the texture of the product can be improved. Further, unlike when using pre-twisted twisted yarn, there is no need for a rewinding process or a warping process after twisting the yarn, and the yarn can be supplied without splicing, significantly improving manufacturing efficiency.
Furthermore, the yarn twisting direction can be directly changed by the twill without wasting raw yarn, and a product of better quality without causing excessive yarn roughness can be obtained compared to the case where pre-warped twisted yarn is used.

[Brief explanation of the drawing]

1 to 4 show an example of an apparatus for carrying out the method of the present invention, in which FIG. 1 is an overall view, FIG. 2 is a partial front view, FIG. 3 is a side view of one side of the creel, and FIG.
The figure is a partially cutaway side view of the tensioning mechanism. 1... Creel, 2... Bobbin, 3... Loom,
17...Spindle drive shaft, 21...Spindle, 26...Flyer, 27...Tension adjustment member.

Claims (1)

[Claims] 1. A method for producing a band-shaped fabric in which the uncombined yarn is pulled out from a creel on which a required number of bobbins are wound, and the uncombined yarn is fed to a loom for weaving. 1. A method for producing a band-shaped fabric, characterized in that during feeding to a loom, the creel is added at the same time as weaving by a adding mechanism attached to each bobbin.