JPH0364537A - Method for cleaning slug tube - Google Patents

Abstract

PURPOSE:To catch fly waste in a dust directly into a filter just before blower by providing an opening part equipped with a shutter at the end of upstream side of sucking duct to which a slug tube is coupled and periodically opening the shutter for a short time to pour air into the duct. CONSTITUTION:A slug tube 1 opening the tip toward a yarn running pathway is connected at the basal part to a sucking duct 2, which is coupled on the downstream side to a blower at the upper end 3 and a circular opening part 4 equipped with a shutter 7 consisting of a disc 6 opening and shutting with an air cylinder 8. When the shutter 7 is opened, a large quantity of air is poured from the opening 4 into the duct 2 and fly waste accumulated in the duct 2 is blown out on the downstream side and caught with the filter directly just before the blower to simply carry out cleaning in the duct 2 without requiring man power and interrupting spinning and ending.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION 1 The present invention relates to a method for cleaning the inside of a slack tube duct in a spinning machine.

K PRIOR TECHNOLOGY I As shown in FIG. 2, the slack tube in a spinning machine is a tube 11 with a vertically elongated cross section that is installed directly below all the spinning units 10, and each opening 12 is connected to the yarn Y. The other end is connected to a suction tact 13 common to all slack tubes 11.

Each shift tube 11 swings its tip opening 12! It is supported by the suction nook 1-13 so that the suction can be stopped, and when the suction is to be stopped, the tip thereof is swung to shift the position of the suction port 15 provided on the front panel 14 and the opening 12. This makes it possible to stop the suction. The tact 13 is connected at one end to a suction blower (not shown) and is closed at the other end. The blower is constantly operated to suck the air inside the dows 1 to 13 and maintain the inside of the duct 13 at a reduced pressure. When 11 is swung, a strong air current is generated in the short tube 11 through the opening 12 and into the dow 1-13. As a result, the yarn Y that is no longer wound up by the winding device is sucked into the thread tube 11 and stored until the yarn splicing is completed.

The duct 13 and the blower are designed so that sufficient suction airflow can be generated even when the multiple-weight valve valve tube 11 is simultaneously activated as described above, but in order to reduce pressure loss, Since the cross-sectional area of the dow 1-13 is large, the air flow rate inside the duck 1-13 is not high even though the degree of pressure reduction is high. In particular, when all the stick tubes 11 are closed and there is no incoming airflow, or near it, the airflow within the dow 1-13 is extremely slow. Therefore, most of the fluff that leaves the yarn Y sucked into the shuttle tube 11 and enters the dows 1 to 13 with the air current flows through the duct 13 because there is not enough wind speed to transport them. It adheres to and accumulates on the inner walls of buildings.

This tendency becomes more pronounced as the wind volume and wind speed decrease toward the upstream side of the duct.

The fluff deposited in the duct must be cleaned from time to time, as the more particles there are, the greater the loss of pressure in the airflow within the duct, reducing suction performance and interfering with the normal operation of the slack tube.

However, cleaning a long duct manually is not only time-consuming, but also requires interruption of spinning or splicing.

K Problems to be Solved by the Invention In view of the above points, the present invention provides a method for easily cleaning the inside of a slack tube duct without requiring manual labor or interrupting spinning or splicing. This is what we are trying to provide.

Means for Solving Problem 1 An opening with a shutter is provided at the upstream end of the suction duct to which the slack tube is connected, and the shutter of the opening is periodically opened for a short period of time.

1) When the shutter at the upstream end opening of the duct is opened for a short time,
From there, a large amount of air flows into the duct, and the lint and fluff that had been traveling 44 meters inside the duct are carried toward the blower by the airflow. The carried lint is collected by a filter installed in front of the blower. If the shutter is opened and closed automatically by an air cylinder or the like that operates periodically, the inside of the duct can be cleaned without any human intervention.

When implementing this method (also, increase the blower capacity as necessary so that the pressure inside the tact chamber is maintained at the level of vacuum required for normal operation of the slack tube even when the shutter is opened).

K Embodiment 1 An example of an apparatus for carrying out the method of the present invention will be described below with reference to FIG.

A sludge tube 1 whose tip end is open toward the thread running path of each of the plurality of units has its base connected to a duct 2. One end of the duct 2 is connected to a blower (not shown), and a circular opening 4 is provided at the upstream end 3 on the opposite side from the blower connection part (not shown) on the left side of the M1 diagram. ,
A shutter 7 consisting of a disc 6 rotatably supported by a support shaft 5 is attached. A rond tip of an air cylinder 8 is connected to the disc 6, and by operating the air cylinder 8, the disc 6 can be rotated around the support shaft 4 and the shutter 7 can be opened. The operation time and operation interval of the air cylinder 8 are set by a timer (not shown) so that the air cylinder 8 can be operated automatically or can be operated manually.

The shutter 7 is normally closed. During yarn splicing, the airflow flowing from the sludge tube 1 reduces its flow velocity within the duct 2, and some fluff accumulates within the duct 2 as described above. The speed at which fluff accumulates varies depending on the frequency of splicing, the wind speed inside the dow, etc., but in any case, after a certain period of time, the accumulated fluff will reach a state where it is necessary to remove it. Become. The critical operating time T is experimentally confirmed, and when the time T arrives, the air cylinder 8 is operated and the shutter 6 is activated for a short time. As a result, a large amount of air flows into the duct 2 through the opening 4. Even in a state where all the slack tubes are closed and there is no airflow in the duct due to air flowing in from the slack tubes, the air flowing in from the opening 4 can blow away the fluff accumulated in the duct 2.
By increasing the opening area of the opening 4, almost all of the fluff in the duct 2 is removed and collected by the filter just before the blower. The removal of accumulated fluff carried out in this way is almost I! Since this is carried out every 11 hours, the shutter 7 only needs to be opened for a very short period of time, about several seconds. Also,
While the air is flowing in from the opening 4, the degree of decompression inside the dows 1 and 2 decreases, but the blower capacity must have enough margin to maintain the necessary degree of decompression even in the reduced state J'3. As a result, normal suction of the slack tube 1 is possible.
Yes, there is no need to stop thread splicing during that time.

Effects of the Invention 1 As described above, the present invention provides a sludge cove suction tank 1-
By providing an opening with a shutter at the upstream end of () and periodically opening the shutter for a short period of time,
A strong wind is periodically generated inside the duct from the upstream end,
Since this blows away the fluff in the duct and cleans it, it is possible to automatically clean +i4 in the tact without requiring any manual labor or stopping the thread splicing. .

[Brief explanation of drawings]

Fig. 1 is a perspective view of a duct used in carrying out the present invention;
The figure is an explanatory diagram of slack tubes and ducts mounted on a spinning machine. 1...Slack tube. 3...Upstream end. 7...Shutter

Claims (1)

[Claims] 1. A slack tube duct for a spinning machine characterized in that an opening with a shutter is provided at the upstream end of the suction duct to which the slack tube is connected, and the shutter of the opening is periodically opened for a short time. Cleaning method.