SU37601A1 - Device for narrowing the width of the tape in the exhaust apparatus - Google Patents

Description

According to the mounting method, the tapering devices used up to now can be divided into two groups: 1) devices whose location is determined directly or indirectly by the rocking rake and 2) dryers mounted on a fixed rod that holds them and allows them to be displaced laterally move roving. The torsionists of these systems occupy, with respect to the movement of the fibers, a position depending on the device on which they are mounted.

According to the invention, the tapering device is mounted perfectly free and is not connected to the guide mechanism in any way. The taper is placed only on the lower exhaust cylinder and the roving itself shifts the taper in the lateral direction. As a result, under the action of friction, the constrictor, along with the roving, tends to the central point, and only the roving acts on it, which gives it direction and causes it to slide, and the constrictor is supported from below by the lower draw roll. In addition, such a narrower is constantly carried forward by the action of the positioning

(321)

in front of it are pairs of exhaust rollers and the action of the roving itself, which runs down the underside of the taper as the exhaust mechanism operates. Thus, the narrower follows the movement of the fibers to the point at which the latter are gripped by the lower pair of draw rollers, and only the completely insignificant number of fibers escape.

If on a spinning machine equipped with a taper, the roving is broken during operation, the tapering lateral movement will stop and as a result, when the roving is reclined again, the position of the stopped taper will not match the position of the roving and the latter will not be taken into the narrower.

This drawback, according to the invention, is eliminated by connecting two tangent arms with a horizontal connecting part. Due to this, when the roving is cut off, the lateral movement of the corresponding tapering rod does not stop and the latter continues to move under the action of another tapering clamp associated with it. After knocking over a torn roving, the narrower will occupy a position corresponding to the position

roving at the moment, and because roving itself will enter the narrower.

In FIG. 1 shows a cross-section of the device; FIG. 2 is the same as in FIG. 1, but with a device for holding the fibers consisting of a pair of small rollers; FIG.

3 and 4 are a perspective view of a pair of open tapering tips; FIG. 5 is a perspective view of a pair of closed narrowers.

FIG. 1 and 2 M - pull out roving, A-feeding rollers, - pull-out device, also consisting of a pair of rollers, - holding parts, feeding the roving directly: firmly to the exhaust rollers Z: and at the same time holding the roving so that the fibers trapped by the exhaust rollers E do not carry along the other fibers of the roving that have not yet been gripped by the exhaust rollers. According to FIG. 1, the holding member consists of a pair of endless belts. In the embodiment shown in FIG. 2, this device consists of a pair of small diameter rollers located in the immediate vicinity of exhaust rollers E.

In both cases, the taper / is mounted in the usual way between the retaining device R and the exhaust rollers E.

One of the exemplary embodiments of a taper, according to the invention, is shown in FIG. 3 and 4. They are attached to both tangents m / along the side of the rod 2. Both the rods 2 are left in a common tube 3, into which they are pushed into the side. The tube 3 is provided with a slit 5 /, from which both ends 21 of the rods bent at a right angle protrude. Due to this, the latter can slide with a known game, so that the distance between the centers of both tangents can vary somewhat. In addition, the size of the notch 31 is large enough so that both knives / can rotate around the geometric axis of the rods 2 and freely relocate according to the position not shown in FIG. 3 and 4 of the front exhaust roller.

In order to raise the upper exhaust roller

could not tilt forward; a fixture consisting of wire 4 bent in the shape of a fork with two branches is used. The ends 43 of this device are at rest on the lower draw roll, and the curved ends 42 are on the lower intermediate roll 5.

Normally, the forward tapering displacement is limited by the upper draw roller and, thus, the tapering bars are not held by the wire 4. If, however, the upper pull roller is raised, then the lower roll movement draws the narrowing bows forward, so that the connecting tube 3 presses down the curved ends 41 device 4, which thus holds the constrictor system /, 2, 3.

FIG. Figure 5 shows closed narrowers 1 intended for large rovings subjected to severe flattening after stretching. To do this, it is necessary that the inner surface of the constrictor be flat. Such constrictors are also supplied with connecting rods 2, sliding in tube 3 provided with two cuts 31. In each of the cuts 31, the bent end 21 of one of the rods 2 slides. The tube 3 is equipped with two cuts here instead of one, since in view of the considerable distance between the centers of the constrictors, with one notch, the rods 2 would be very long.

As in the embodiment of FIG. 4, as in the embodiment of FIG. 5, a system consisting of rods 2 and tube 5 can be placed in a tube of relatively large diameter, not shown in the drawings. This would protect the connecting device and, moreover, would strengthen the tube 5, weakened by slots 31, the Bottom surface 11 of all constrictors has a cylindrical-conical shape and therefore can fit tightly onto the lower exhaust roller which serves as a support for the constrictors (Fig. 1, 2).

The subject of the patent.

1. A device for narrowing the width of the tape in the exhaust apparatus, freely located between the exhaust pairs of rollers, characterized in that the constrictor /, open or closed, is located between

“Both the front rollers along the belt and the rollers are provided with a more concave and cylindrical surfaces to the surface of the rollers //. 2. The form of making the device according to claim 1, characterized in that the constriction 7 in pairs are flexibly connected to each other by means of rods 2 attached to them, which enter a common tube J equipped with one or two notches 31, from which the bent ends of the rods 21 protrude 2

3. When adapting to PP. 1 and 2, in order to prevent the constriction of the tailors from falling when lifting the upper exhaust roller, fork-bent wire 4, the ends 43 of which rest on the lower exhaust roller and the curved end 42 on the lower intermediate roller 5.

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