JPS6399351A - Warp yarn feeding method - Google Patents

Abstract

(57) [Abstract] 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 warp supply method for weaving by supplying warps directly from a twist bobbin without winding them directly onto a beam.

Conventionally, the method of directly weaving from a twisted yarn bobbin was applied to weaving with a small number of threads, such as 3/5 an, for tire cord blinds, etc.; For example, 30 pieces 15c) I! For some cases, the beam winding method is the mainstream because of uneven feeding of the warp threads.

In order to streamline the weaving process, the present inventors proposed a method in which the warp is directly supplied and weaved without winding the yarn from a bobbin to a beam in a weaving process that requires a large number of weaving operations. Focusing on the fact that loss can be reduced and the amount of winding can be increased, the method of the present invention, which is an alternative to the beam method, has been developed.

An example of implementing the method of the present invention will be described below based on the drawings.

FIG. 1 is a schematic diagram of the entire device. 1 is a twisted yarn bobbin installed on a creel stand (not shown), and the warp threads 11 of the twisted yarn bobbin 1 pass through the mail guide 2, pass through the Lee plot 3.4.551, and pass between the guide rollers 6.8. The warp tension is corrected by the first dancer roller 7 provided. The warp threads 11 whose tension has been corrected are transferred to a feed-off roller 9 and an attached kettle nip roller 10 .
The second dancer roller 12 is nipped and reached by 11.
will be introduced in At this time, 13 is a torque motor for driving the feed roller 9, 14.15.16.16', 1
7.18 is a tail and belt for transmitting the motor.

The second dancer roller 12 is located between the nip roller 11 and the guide roller 19 in front of the nip roller 11, and is located between the nip roller 11 and the guide roller 19 in front of it.
The tension is controlled by the control means as follows.

20.21 is a vertical limit switch provided at a certain distance to correspond to the vertical movement of the second dancer roller 12, and the distance B1 between the limit switches 20.21 and the contact length B of the dancer roller 5 are The relationship is f = t, o ~
2. The torque motor 13 is adjusted by using the slider 22 for the delivery roller 9 as shown in o, a, and a.

The above-mentioned method can prevent periodic unevenness caused by the progress of the warp threads l', but it is also possible to apply an appropriate load to the second dancer roller 12 depending on changes in the total number of warp threads, tenir, etc. Numerous hooks P's in the length direction, P2
, Ps, Pa... is pivotally supported to the frame side of the device via a pin 24, and each hook P1, P2 of the weight lever 23 Ps.
Weights W Wt , W2 , Ws... applied to oo
25.26.27.2 The load on the second dancer roller 12 can be changed appropriately by the couple of .
8.29 is a cheno and a cheno wheel interposed between the two for couple transmission.

30.31id loom side notension roller, 32.3
3 is the same heddle, in which the warp threads 1' are woven in the armpit area, pass through a winding sheath roller 84, 85 and a press roller 86, pass through a guide roller 37, and are wound as a product 40 by a winding sheath roller 38, 39 of the wine goo. It will be taken.

FIG. 2 is an enlarged detailed view of the upper and lower limit switch portion in FIG. The upper and lower limit switches 20, 21, which are opposed to each other with this in between, are moved horizontally 20', 20', 211, .
211... so that it moves appropriately,
This determines the distance between the up and down mitt switches and the distance between the dancer and the dancer.
The ratio of the contact portion with the roller 12 is adjusted to within 1.0 to 2.0.

By the way, in order to obtain a particularly high-quality fabric, one coat B1-1 is required.
1 = 1.0 to 1.15 is most preferable, and within this range, the feed roller 9 is in an interlocking state. FIG. 3 is a graph diagram showing a comparison of the tension distribution state of the warp yarns in the present invention and the conventional method, and the horizontal axis represents the width interval of the running warp yarns.
The vertical axis shows the warp tension (me) at each width position of the pigeonhole. In the drawing, the solid line A is for the method of the present invention, while the dotted line B is for the conventional beam method. The conventional method has the disadvantage that if the warping conditions are not carefully considered, the selvage will be woven in a ragged state and the warp threads at the selvage will be easily cut, but the method of the present invention has the disadvantage that There are no problems at all.

The present invention is carried out as described above, and according to experiments by the present inventors, products woven by the method of the present invention have very good weavability compared to products woven by the conventional beam method. The quality is also excellent. Moreover, the method of the present invention can completely eliminate the man-hours required for winding during warping and the man-hours for setting up the machine each time the beam is replaced, resulting in a reduction in man-hours of about 35% compared to the conventional beam method. It became something that was planned. In addition, it is possible to completely eliminate the loss of yarn waste that occurs each time the beam is replaced, and is therefore very effective in reducing yarn loss.

As for the amount of winding, since the winding device is located at a different location and the warp threads wound around the twisting bobbin are long, it is possible to wind the thread as needed. Together with this, it will bring about a revolution in the textile field.

[Brief explanation of the drawing]

FIG. 15 is a schematic diagram schematically showing an example of a device for implementing the method of the present invention, FIG. 2 is an enlarged detailed view of the upper and lower limit switch portions in FIG. 1, and FIG. FIG. 3 is a graph diagram showing a comparison of tension distribution states of warp yarns in a conventional method. 1... Twisting bobbin 1'... Warp 2... Mail guide 7... Pa. 1st dancer roller 9
...Send! ! l) Output L roller 10, 11'...
・Nip roller 12...Second dancer roller
13... Torque motor 19... Guide roller 20.21... Limit switch 2
2...Slidac 23...Weight lever 30.31...Tension roller 32.
33...-Heald 34.35...Take-up sheet roller 38.39...Take-up sheet roller Figure 2->A Figure 3 Warp thread →

Claims (1)

[Claims] (1) A method of weaving by supplying the warp directly from the twisting bobbin without winding it around the beam, in which a feed roller equipped with a torque motor is used to supply the warp in front of the loom, followed by a vertical limit switch that moves up and down over a fixed distance. The distance B^1 between the upper and lower limit switches and the diameter B_ of the contact part of the dancer roller are arranged as required.
The ratio B'/B_1_ to _n is 1.0 to 2.
A warp supply method characterized in that the torque motor of the delivery roller is adjusted via a slider so that the torque is within the range of 0.