JPS6335733B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of operating a suction cleaning device (neumatic clearer) attached to a ring spinning machine, and in particular, in a state where no thread breakage occurs, the operation is stopped or the operation is slightly reduced. The suction action of
It is designed to automatically continue normal operation when thread breakage occurs.

Pneumatic clearers are used not only in ring spinning machines, but also in spinning machines other than ring spinning machines. These pneumatic clearers remove fluff and dust that accumulates on the spinning machine by suction, but in particular, pneumatic clearers that have a suction port in the drafting section are When the spun yarn is cut in the middle, it is used as a suction device to suck out the yarn that is continuously fed out.Especially in ring spinning machines, these pneumatic clearers are used for splicing work. It is used as a holding device for the purpose of transportation, and has become an essential accessory.

By the way, such a pneumatic clearer operates at the same time as the spinning machine is started, and is designed to constantly create a suction airflow at the suction port. Furthermore, in order to create such an air flow structure, a high-output induction fan has recently been used to ensure more reliable operation, which has increased operating costs. In addition, the rise in the price of electricity has further increased these costs, and if there is no thread breakage, the pneumatic clearer must be stopped completely or the pneumatic clearer must be operated with very little suction power. It is conceivable that the operating costs of the clearer can be reduced. However, there was no practical thread breakage detection device, or even if a thread breakage was detected, the signal was only a display and it was not possible to grasp the number of thread breaks in the entire machine. These responses take time,
Within a short period of time, it was impossible to determine whether the thread was broken and to switch the pneumatic clearer.

On the other hand, the present applicants have been paying attention to thread breakage detection devices for some time, and have developed new methods and means and applied for patents. These detection devices detect the presence or absence of thread breakage by electrically scanning a thread breakage detection member fixedly provided on each weight of each machine. Therefore, it is possible to instantaneously measure the number of yarn breakages for all spindles of the machine in an extremely short amount of time, and also to confirm the number of yarn breakages in each weight and the location of the spindle where the yarn breakage has occurred. Therefore, the present applicant has proposed that with such a thread breakage detection means, it is possible to easily start and stop the above-mentioned new automatic clearer or switch to reduced force operation, and furthermore, it is possible to easily start and stop the new automatic clearer or switch to reduced force operation. Focusing on the fact that it is possible to choose the application of Machitsuku Clearer,
This has led to the present invention. That is, in the present invention, the operation of the pneumatic clearer is controlled by a thread breakage detection device provided in the spinning section of each spindle.
When one or a certain number of thread breakages are detected, normal operation is continued, and when no thread breakages are detected or the number of thread breaks is less than a certain number, the machine is stopped or operates with a small amount of electric power.

The present invention will be explained below based on the drawings, but the drawings show one example of a specific implementation of the present invention, and the present invention is not limited to the illustrated example. The same implementation is possible even if parts are changed or a part of the design is changed. 1st
The figure is a schematic plan view showing a ring spinning machine 1 and a pneumatic clearer device attached thereto.
2 is a machine frame, 3 is a gear end, and 4 is an out-end frame. End catch (suction box) of pneumatic clearer device
5 is generally provided on the out-end side, and a suction fan and a suction fiber waste separation device are housed within the suction box 5. Suction ducts 6, 6 extend from the suction box 5 to the left and right sides (upper and lower sides in the figure) of the frame 2, respectively, toward the gear end, and each of the suction ducts 6, 6 has a large number of branch suction ports. 7 is provided, to which a suction tube 10 (FIG. 2) is continuous. FIG. 2 is a schematic diagram showing a part of the front side of the ring spinning frame 1, in which the suction pipe 10 is provided for each staff, and a connecting part 9 is formed in the center of the suction pipe 10, and a branch suction port 7 of the suction duct 6 is provided. connected to. Further, the suction pipe 10 forms a cylindrical portion along the lower part of the front bottom roller 8,
An orifice (intake port) 10a is formed in the cylindrical portion. The intake port 10a is provided so as to correspond to the air drawn out from the front bottom roller 8, and a suction airflow is formed at the intake port 10a. Therefore, the thread drawn out by the front bottom roller 8 and the top roller 8a placed under pressure thereon is twisted by a twisting and winding device as shown in a part of FIG. It is spun into yarn Y and wound up. When the thread breaks during winding, the thread is sucked into the suction port 10a and becomes waste fibers, as shown by Ya.
are accumulated in

On the other hand, the thread breakage detection device developed by the present applicant et al.
As shown in FIG. 3, the snail wire 11 of the rappet 12 is configured to detect the presence of yarn, and the detection signal is sent to the yarn breakage measurement and calculation device by a conductive member 15 provided along the rappet bar 13. It will be introduced in 2020. The measurement and calculation device 20 displays the number of thread breakages at every moment, the number of thread breakages per unit time, and the location of the thread breakage weight, and if necessary, displays the weight with a specific number of thread breakage, etc. You can too. In addition, a signal can be generated by means of display devices such as those shown at 23, 23 when thread breakage occurs on the left and right sides of the machine base and when a predetermined number of thread breaks occur. 22 is a printing device that can print out the data.

In the present invention, the measuring device 20 that can detect yarn breakage in this way and concentrate the detection signals to identify the suction fan motor of the suction box 5 is connected to detect yarn breakage as described above. If no thread breakage is detected at all, the suction fan motor is stopped or operated with a small suction force, and normal operation is resumed after detecting the occurrence of a specific number of yarn breakages, for example, 1 to 5 yarns. If necessary, the suction amount may be increased primarily when a specific number of yarn breaks occur, and normal operation may be performed as the number of yarn breaks increases. That is, as shown in FIG. 5, a thread breakage measuring device 20 and a suction box 5
are connected by the operation cord 24 and switched as described above. In order to carry out the present invention using a conventional suction box suction fan motor, the suction fan motor M may be operated using a wiring configuration as shown in FIG. In this wiring diagram, the fan motor M is controlled on and off, and switches N and N are set to detect thread breakage.
If more than one yarn breakage occurs, the fan motor M is rotated normally. Further, although the suction box 5 has one suction fan and one motor, separate suction fan motors may be provided for each of the left and right sides and the suction ducts 6, 6.
It is also possible to configure so that when yarn breakage occurs on each of the left and right sides, only the suction fan motor on that side is operated. In addition, the suction fan motor can be configured as a variable speed motor to increase the suction amount as the number of yarn breaks increases, or it can be configured with multiple suction fan motors to increase the number of suction fan motors in operation depending on the number of yarn breaks. You can freely change the design. The gist of the present invention is that the thread breakage detection means is capable of quickly transmitting a thread breakage signal in order to eliminate wasteful operation of a suction fan that continues normal suction operation even though there is no thread breakage. If so, you can use anything. Furthermore, some ring spinning machines are equipped with an upper blowing fan that moves back and forth. The pneumatic clearer also cooperates with these blowing fans to clean the vicinity of the drafting section. Therefore, by applying the present invention, it is recommended to increase the reciprocating speed of the blowing fan, since the pneumatic clearer will stop or provide weak suction if there is no thread breakage. In order to perform these operations, it is recommended that the thread breakage measuring device 20 be configured to be operated directly.

As described above, the present invention makes it possible to rationalize the operation of a pneumatic clearer and reduce operating power costs.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an example of the arrangement of a pneumatic clearer in a ring spinning machine, Fig. 2 is a partial front schematic view showing the front of the ring spinning machine, and Fig. 3 is an example of a thread breakage detection device and measuring means. FIG. 4 is a wiring diagram showing an example of the drive wiring for the suction fan motor, which is shown connected to the suction box of the pneumatic clearer. 1...Ring spinning machine, 2...Machine frame, 3
... Gear end frame, 4 ... Out end frame, 5 ... Suction box, 6 ... Suction duct, 7 ... Suction port, 8 ... Front bottom roller, 9 ... Connection section, 10 ... Suction tube, 10a
... Suction port, 11 ... Snail wire, 12 ...
Rappet, 15... Conductive member, 20... Thread breakage measuring device, 22... Printing device, 23... Display device, 24... Operation cord.

Claims (1)

[Claims] 1. A method of operating a suction cleaning device which is individually installed in a ring spinning machine and is used to suction and remove yarn breakage and dust near the drafting section, wherein the cleaning device is installed in the spinning section of each spindle. The thread breakage detection device continues normal operation when a certain number of thread breaks are detected.
A method for operating a suction cleaning device installed in a ring spinning machine, characterized in that when thread breakage is not detected or the number of thread breakages is less than a certain number, the device is stopped or operated with a small amount of electric power.