JPS61138746A - Disc spray weft yarn storage apparatus for fluid jet type shuttleless loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a weft storage device for a fluid jet type shuttleless loom.

[Prior art and its problems to be solved] An air jet/water jet fluid jet type shuttleless loom is equipped with a storage device that measures and stores a required length of weft yarn for each cycle of the loom. Various types have been proposed and implemented. Among these, a system has been proposed in which a nine-rotating disk is used as a yarn carrier and the weft yarn supplied from a yarn feeder is measured and stored on the disk via a supply nozzle (US Pat. No. 3,902). No. 644) Since the rotation of one disc is controlled by an electric motor, there is a drawback that the length measurement storage amount cannot be adjusted infinitely finely. Further, this type of storage device has problems such as fly fluff adhering to the disk, which may impede the weft ejection from the main nozzle.

It is an object of the present invention to solve the problems inherent in a storage device of the type that uses a nine-rotation disk as a yarn carrier to measure and store yarn at once by changing the disk rotation drive type.

[Means for achieving the purpose of the invention]

The present invention focuses on the fact that compressed air is usually used as a weft supply source from a yarn supplying body in a fluid injection type shuttleless loom, and utilizes such compressed air pressure to produce yarn as a yarn carrier. In order to control the rotation of the disk, an airflow generation nozzle is provided near one disk, and by adjusting the compressed air pressure from the airflow generation nozzle, the length of the weft yarn is stored steplessly, and at the same time, the fluff that tends to adhere and accumulate on the first disk is removed. The purpose is to eliminate the cause of the weft ejection hindrance.

The present invention will be explained in detail below based on a specific example applicable to an air jet type loom.

FIG. 1 is a perspective view showing an embodiment of the storage device according to the present invention, in which the weft Y from the yarn feeder 1 is sent between the feed roller 3 and the medium feed drum 4 via the loop guide 2, and its length is measured. A weft yarn Y of a required length is stored in a meandering manner on a rotating disk 10 which is a yarn carrier by means of compressed air from a supply nozzle 6 which is swung by a movable lever 7 via a yarn guide 5.
In synchronization with the opening of the clamp device 8, the compressed air is injected from the main nozzle 9 toward Hiro.

As shown in FIG. 2, the rotating disk 10 has a plurality of packet blades 11, 11, etc. arranged on its outer periphery, and is oriented in the direction of the packet blades 11. An airflow generating nozzle 20 is arranged. The compressed air ejected from the airflow generating nozzle 20 receives a measurement signal s1 from a tachogenerator 21 that measures the rotational speed of the rotary disk 10, and a setting signal S from a setting device 22 that sets the rotational speed according to the required weft length.
o by a comparator 23, and an electropneumatic proportional valve 25 controlled via a controller 24 controls the ejection air pressure.

A friction surface 10a is provided on the upper surface of the nine-rotation disk 10 so that the weft Y can be easily stored therein, and a weft presser plate 12 is also attached. Also, when the loom is stopped, the rotation circle is stopped by a signal from the loom stop device 26.

The brake 13 is actuated to stop the panel 10, and the electropneumatic proportional valve 25 is closed via the controller 24.

In the storage device having the above configuration, compressed air at a required pressure is injected from the airflow generating nozzle 20 via the electropneumatic proportional valve 25 in response to the setting signal So from the setting device 22, and the wind receiver is used as shown in FIG. The bucket blades 11 and 11- are made to collide with each other to give the required number of rotations to the disc 10, and the required length of weft Y is measured and stored on the disc 10 for each cycle of the loom, and the weft Y is intermittently sent from the main nozzle 9. eject and fly. In addition, the rotational speed of one disc 10 is constantly measured by a tachometer generator 21, and when the measured rotational speed deviates from the set value, a comparison signal St/So is sent to the controller 24 via the comparator 23, and it corresponds to the set value. The electro-pneumatic proportional valve 25 is feedback-controlled so as to do so.

[Effects of the present invention]

According to one aspect of the present invention, as is clear from the above description.

Since the rotation speed of the disc, which is a yarn carrier, is set by the jet pressure of compressed air, the rotation adjustment of the two discs can be controlled steplessly, and it is extremely excellent as a weft storage device in that it is easy to change the weft storage length. (At the same time, the compressed air can remove the fluff that tends to adhere to and accumulate on the disc, so it has excellent operational stability and can solve the problems inherent to the single-rotation disc storage system at once. Since the compressed air source that is always available in the fluid jet type shuttleless loom can be used as the driving source, it is very economical.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment in which the present invention is applied to an air jet type loom, Fig. 2 is a sectional view showing a specific example of a rotating disk, and Fig. 3 is for explaining the rotational operating state of the rotating disk. FIG. 10.- Disk, 11.- Wind receiver is a blade. 20.--airflow discharge nozzle, 21.--tachogenerator. 22-setting device, 23-comparator, 24-controller. 25-Electropneumatic proportional valve. Utility model registration applicant Tsudakoma Kogyo Co., Ltd.

Claims (1)

[Scope of Claims] A weft storage device for a fluid jet type shuttleless loom in which a rotating disk 10 is used as a yarn carrier and the weft Y supplied from a yarn supplying body 1 is stored on the disk 10 via a supply nozzle 6, comprising: An airflow generation nozzle 20 is provided near the airflow generation nozzle 20, and while a rotational force is applied to the disk 10 by the airflow ejected from the airflow generation nozzle 20, the rotational speed of the disk 10 is adjusted by controlling this airflow pressure, and further, A disc-blown weft storage device characterized in that fly fluff adhering to a disc 10 is removed.