RU2288305C2 - Apparatus for stapling of flax fiber in sliver - Google Patents

Abstract

FIELD: textile industry.

SUBSTANCE: apparatus comprises feeding rolls designated for feeding of fiber into working chamber made in the form of housing, pulling drums equipped with beaters and adapted for synchronic rotation on rolls, air passage clearances of adjustable area, and is additionally provided with two frames located forward of cut provided through housing in close proximity to sliver feeding zone so that air passage clearance within each of said frames may be adjusted for enabling passage of air into chamber. Edges located in close proximity to fiber are movable with respect to one another.

EFFECT: increased efficiency and improved quality of fiber.

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Description

The invention relates to the textile industry, and in particular to devices for producing stapled flax fiber in a ribbon, and can be used in the production of yarn from a mixture of flax and other fibers.

Currently, for the stapling of fibers, the method of cutting the gap and weaving is applied (SU 1602885 A1, 10.30.90; SU 1305204 A1, 04.23.87; JP 58-42289 A, 19.09.83).

The most commonly used cutting method.

However, these methods do not allow to obtain fibers from technological flax fiber with the necessary technological properties. This is due to the fact that the use of the cutting method leads to the formation of blunt ends in elementary linen complexes, and with the method of tearing or combing, the required level of fiber variation in length is not provided.

The closest analogue of the claimed device is a known device for stapling flax fiber in a tape containing feed rollers for feeding fiber into the working chamber in the form of a casing, scraper drums with beats synchronously rotating on the shafts and air suction openings adjustable in area (RF Patent No. 2178022, published Bul. No. 1 of January 10, 2002).

However, this device does not allow to effectively regulate the process of stapling due to changes in the tension forces in the fiber during beating and due to changes in the speed of the air flows entering the processing zone, which provide the necessary location of the fiber with respect to the working edges of the beat.

The objective of the invention is to provide a device for stapling flax fiber in a tape, providing a technical result, consisting in improving the quality of the fiber along its length, unevenness in this property and degree of purity by adjusting the intensity of the impact on the fiber from the bobbin drum.

The technical result in a device for stapling flax fiber in a tape, containing feed rollers for feeding fiber into the working chamber in the form of a casing, scraper drums with beaters synchronously rotating on the shafts, the gaps for air passage are adjustable in area, it has two frames, installed in front of the cutout in the casing in the feed zone of the tape with the possibility of adjusting inside each of them a gap for the passage of air into the chamber, and the edges of the edges located near the fiber can move relative to completely each other.

The use of two frames, inside each of which the clearance is regulated, and the edges of the frames located near the fiber, can move relative to each other, allows you to simultaneously control two of the most important process parameters: the speed of the air flow into the processing zone and the intensity of loading of the fibrous strand when interacting with a beater drum. In particular, changing the size of the clearance within the framework allows you to change the air speed at the entrance to the working area. Moving relative to each other the edges of the frames located in front of the plane of movement of the upper beaters near the fiber, allows you to change the degree of loading of the fiber during scuffing and conditions for stapling. Thus, it becomes possible to adjust the modes of the stapling process based on the required level of quality of the staple fiber and the properties of the original fiber in the tape. This circumstance will contribute to improving the quality of staple fiber.

The invention is illustrated by drawings.

Figure 1 shows a vertical section of the proposed device.

Figure 2 shows a horizontal section of the proposed device,

Figure 3 shows a diagram of the interaction of the beating straps with fiber.

Figure 4 shows a view A (see figure 3).

The device for stapling flax fiber in the tape (Figs. 1 and 2) consists of feed rollers 1 and 2 and drums 3 installed inside the casing 4 (Fig. 3) of the working chamber on parallel shafts 5. The shafts are connected by gears 6 engaged with drive gear 7, which provide consistent rotation of the drums in the same directions. On the drums in the radial direction are alternately in two planes A and B beater bars (beater) 8. In the end surface of the casing 4a there is a cutout 9 for feeding the tape 10. On the side surface of the casing 4b there are outlets 11 for the air-fibrous mixture.

Before the cutout 9, frames 12 and 13 are installed in the feed zone of the tape. The edges 14 and 15 of the frames located near the fiber are located under the rollers, have the ability to move relative to each other by changing the distance C (Fig. 4) due to the presence of grooves 16 and 17 .

Above each of the frames there is a shutter 18 and 19, with which you can change the amount of clearance D for the passage of air into the working chamber. Depending on the clearance D, the air velocity V entering the chamber will change. Fixing frames and dampers is carried out using screws 20 and 21.

The device operates as follows. Prepared in the form of a tape, flax fiber 10 is fed by means of a pair of feed rollers 1 and 2 into the working chamber located inside the casing 4, where it is exposed from the working edges of the beater bars 8. When striking beater bars on the tape (figure 3) in the elements fibers, inertial forces arise, and friction forces arise between the fiber and the surface of the edges of the planks. These forces provide for the stapling of the fiber and its cleaning from impurities. In this case, the beater bar located in plane A deflects the tape in the direction of its movement. The beat bar located in plane B moves towards and deflects the ends of the fibers in the opposite direction, which increases the angle of girth and the friction force between the edges of the bars and the fiber.

After striking the fiber deviates from the vertical position. Therefore, it must be returned to its original vertical position for the following strikes. This return is carried out using air flows entering at a speed V into the lumen D. The lumen D can be adjusted using the dampers 18 and 19. A decrease in the lumen will increase the speed of the incoming air V.

The change in the intensity of the blows to the fiber from the side of the strips can be done by changing the value C (figure 4), characterizing the distance between the edges 14 and 15 of the frames. Having selected the necessary values of the parameters D and C, the frames with shutters are fixed to the casing with 4 screws 20 and 21.

When processing fiber in a tape of other properties, the device is reconfigured by finding rational values of parameters C and D.

Using the proposed device allows stapling of flax fiber with minimal loss of spinning fibers, to preserve the natural pointed shape of the ends of the complexes and at the same time to carry out the necessary adjustment of the stapling process depending on the properties of the original fiber in the tape.

Claims (1)

A device for stapling flax fiber in a tape, containing feed rollers for feeding fiber into the working chamber in the form of a casing, scraper drums with beams synchronously rotating on the shafts, gaps for air passage, adjustable in area, characterized in that it has two frames installed before the cut in the casing in the feed zone of the tape with the possibility of adjusting inside each of them a clearance for the passage of air into the chamber, and the edges of the edges located near the fiber have the ability to move relative to each other.

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