JPS6126377Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for refeeding return cotton in a take-in roller section.

As a form of the take-in cover that covers the top of the take-in roller, the take-in cover is arranged as high as possible above the take-in roller in order to create a large space above the take-in roller and reduce pressure. It is. This form of cover is
When the cotton is transferred from the take-in roller to the cylinder, a very small portion of the cotton that was not delivered to the cylinder (hereinafter referred to as return cotton) is smoothly guided to the feed side and re-supplied to the feed roller and take-in roller. As shown in FIG. Because they were connected to rotating cage rollers, undesirable phenomena tended to occur. That is, the conventional taker-in cover device described above guides the return cotton guided by the taker-in cover 1' to the feed roller 2 directly or via a cage roller, and resupplies it by rotation of the feed roller 2. Therefore, winding of the return cotton around the feed roller 2 and blowing out of the duct air due to the air current generated along with the rotation of the take-in roller are likely to occur. The amount of return cotton is the amount of supplied cotton.
Therefore, the thickness of the return cotton that is re-supplied directly to the feed roller 2 or attached to the cage roller and then re-supplied to the feed roller 2 is extremely thin.
Since it comes into close contact with the feed roller 2, which has a large exposed surface relative to the space inside the cover 1', it is easy to wrap around the feed roller 2. The fact that the return cotton is pressurized together with the supply cotton F between the feed roller 2 and the dish plate 4 promotes the occurrence of the wrapping. Note that the wrapping phenomenon is more likely to occur in the case of long fiber spinning.

When the winding phenomenon occurs around the feed roller 2, the gripping force of the cotton between the date plate 4 becomes unstable, and when the cotton is subjected to the action of the take-in roller 5, the fibers are cut or stripped, and the spun product is quality. Further, the work of removing the wrapped cotton is also complicated. Furthermore, the above-mentioned dust air blowing out pollutes the indoor environment.
When the weather is strong, the returned cotton is scattered all over the room, resulting in losses. In addition, especially in the case of cotton fiber spinning, the returned cotton is resupplied with a mixture of ducts, fine fibers, and impurities, which has the disadvantage of impairing the quality of the spun product.

On the other hand, the take-in undercasing 6 is usually
The take-in cover 1' has holes, so that the pressure in the space between the casing 6 and the lower circumferential surface of the take-in roller 5 is low, and the take-in cover 1' communicates with the space through the joint between the take-in roller 5 and the cylinder 7. Although the effect of reducing the pressure inside the under casing 6 can be enhanced, the drawback is that the holes in the under casing 6 are easily clogged. When the phenomenon of hole clogging becomes significant, the amount of cotton falling at the inlet of the take-in undercasing 6 changes, so it has been essential to periodically perform complicated cleaning work.

The device of the present invention was developed in order to eliminate the various drawbacks of conventional devices, such as the return cotton wrapping around the feed roller 2, the blowing out of strong dust air, the resupply of dust, etc., and the frequent cleaning of the take-in undercasing. The basic idea is to connect the large space inside the take-in cover where the return cotton is guided to the vicinity of the joint between the feed roller 2 and take-in roller 5, and re-supply the return cotton to the take-in roller 5. In addition, the blowing of dust air toward the feed roller 2 side is minimized, and the blowing air is suctioned by a suction means.Furthermore, the large space inside the take-in cover and the suction action allow the dust air to be blown out to the feed roller 2 side. This allows the take-in under casing to be made non-porous by reducing the pressure inside the take-in roller. The feed-side end of the take-in cover is extended and hung down to the vicinity of the joint between the take-in roller and the feed roller, a small gap is formed between the end and the feed roller, and the feed roller is communicated with the small gap. An air suction means is disposed in the.

To explain the embodiment shown in the drawings, under the regulation of the date plate 4 and the feed roller 2, the supplied cotton F is supplied to the take-in roller 5, and after being subjected to fiber opening and dust removal action, it is made into a non-porous material. Under the guidance of the take-in under casing 6, it is transferred below the take-in roller 5 and delivered to the cylinder 7. At this time, since there is a narrow space between the cylinder 7 and the take-in roller 5 and an accompanying airflow is generated due to the rotation of the take-in roller 5, a small amount of cotton is scattered above the take-in roller 5. . Of course takein roller 5
Some cotton returns to the feed section while being caught by the teeth. The above-mentioned scattered cotton is called return cotton, but in order to re-supply this return cotton to the feed section without any trouble, a large space is created above the take-in roller 5 to reduce the pressure. It is necessary to form and arrange the return cotton in such a way as to weaken it and to reliably guide the return cotton to the resupply section. Therefore, also in the device of the present invention, the take-in cover 1 is placed as far as possible above the take-in roller 5, thereby reducing the pressure in the space inside the cover 1, and blowing out the air at the feed side end 1a of the cover 1. It tries to weaken the air flow velocity. Tekine under casing 6 made non-porous due to the above pressure reduction
Since the pressure inside the casing 6 can also be reduced, the inconvenience of even good fibers falling at the inlet of the casing 6 can be eliminated.

By the way, if the return cotton discharged together with the above-mentioned blown air is re-supplied together with the supply cotton F from the circumferential surface of the feed roller 2, it will cause the inconvenience of winding around the feed roller 2 as described above. The feed side end 1a of the take-in cover 1 is made to extend and hang down to the vicinity of the joint between the feed roller 2 and the take-in roller 5. With this configuration, the exposed surface 2a of the feed roller 2 that communicates with the inner space of the taker-in cover 1 is connected to the taker-in roller 5.
The area of the exposed surface 2a can be made extremely small. Therefore, the return cotton is discharged to the joint portion along with a weak airflow, and is attached to the take-in roller 5, which generates an accompanying airflow in the same direction as the airflow, and is re-supplied. Since the exposed surface 2a of the feed roller 2 is close to the take-in roller 5 and is small, there is little possibility that the return cotton will adhere to it and circulate around it, and be re-supplied together with the supply cotton.

In this way, the return cotton is re-supplied to the take-in roller 5 side.
Since there is a risk that dust particles, fine fibers, impurities, etc. may be mixed in with the dust, the device of the present invention forms a small gap G between the end 1a of the cover 1 and the feed roller 2, from which a weak blowout of dust air is caused. In addition, an air suction means is provided to communicate with this small gap G. Specifically, a piece 8 is attached to the end portion 1a of the cover 1, a small gap G is formed between this piece 8 and the feed roller 2, and the suction means includes a suction port 9 connected to a suction source and covers 10 and 11 that cover it. I try to make it consist of: The lower end of the cover 10 is a flexible plate member 12.
The lower end of the cover 11 forms an opening 13 with the feed roller 2 through the feed roller 2 . Said piece 8 has its lower end flush with the cover end 1a, substantially increasing the thickness of the cover end 1a, and the return cotton is flush with the cover end 1a.
a This helps prevent the inconvenience of straddling the lower end and staying there.

One of the roles of the suction means is to suction dust etc. through the small gap G, and therefore it is possible to prevent air from blowing out from the side at the joint between the feed roller 2 and the take-in roller 5, and also to prevent the suction action from being blown out. Since the pressure reduction inside the take-in cover 1 is promoted through the small gap G, the pressure inside the non-porous take-in undercasing 6 is reduced and even good fibers can be prevented from falling.

With this configuration, the fiber group is smoothly transferred through the depressurized space in the undercasing 6, and the return cotton guided to the depressurized space inside the take-in cover 1 is returned to the take-in roller 5 facing the feed roller 2. While being supplied, the dust and the like mixed therein are easily affected by the blowing airflow acting in the small gap G and the suction airflow by the suction means, so they flow out from there and are suctioned.

The suction means can also be used to clean the area around the take-in cover 1 through the opening 13, or to clean the area around the feed roller by removing the flexible plate member 12.

Further, the take-in cover 1 does not need to extend from the vicinity of the joint between the cylinder and the take-in roller to the feed side as shown in the illustrated example; in short, it is necessary to form a large space between the take-in cover 1 and the upper peripheral surface of the take-in roller. It can be of any shape as long as it is.

As described above, according to the device of the present invention, the return cotton that is guided through the reduced pressure space in the take-in cover and discharged from the end of the cover is directly re-supplied to the joint between the feed roller and the take-in roller. Dust etc. are removed by encouraging weak air blowing and suction towards the feed roller side, which not only prevents return cotton from adhering to the feed roller, but also prevents deterioration in the quality of spun products. Disadvantages such as reduced spinning quality and work loss due to return cotton wrapping around the feed roller, which tend to occur in the past, contamination of the indoor environment due to dust air blowing out, and decreased raw material yield due to return cotton blowing out. Furthermore, since the take-in undercasing is made non-porous, it is possible to prevent an increase in the falling of quality cotton under the take-in due to hole clogging in the perforated take-in undercasing, and to reduce the frequency of cleaning the holes. It is possible. Moreover, since it is possible to reliably prevent the return cotton from being entwined when spinning long fibers, it is possible to spin fibers with a wide range of fiber lengths using a single device.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional device, and FIG. 2 is a side sectional view showing an embodiment of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Take-in cover, 2... Feed roller, 5... Take-in roller, 6... Take-in under casing, 8... Piece, 9... Suction port, suction means, 10, 11... Cover, suction means , G...Small gap. 〓〓〓〓〓

Claims (1)

[Scope of utility model registration request] The take-in under casing below the take-in roller is made non-porous, and the take-in cover is placed as high as possible to form a large space between it and the upper peripheral surface of the take-in roller, and the feed side end of the cover is extends and hangs down to the vicinity of the joint between the take-in roller and the feed roller, a small gap is formed between the end and the feed roller, and an air suction means to be communicated with the small gap is provided. Features a return cotton re-feeding device in a carding machine.