SK38395A3 - Leading body of separated fibers - Google Patents

Description

Separate fiber guide

Technical field

The present invention relates to a discrete fiber guide body positioned between a disengaging roller disengaging mechanism and an open side of a spinning rotor comprising a sensing wall to which a guided channel of sensed discrete fibers adjoins, the inlet opening of which comprises a separating edge opposed to the disintegrating feed direction.

BACKGROUND OF THE INVENTION

The known guide bodies of the mechanisms for detecting and guiding the discrete fibers, in particular from the combing roller of the unit of an open-end spinning machine, are formed as a body positioned between the separating mechanism with the combing roller and the open side of the spinning rotor. the linking guide channel of the sensed or separated fibers, or they are formed as a body wrapping up to the zone of the fiber sliver feeding mechanism a combing roller, provided on the sensing wall with a separating edge with an inlet orifice formed therein.

Such guiding bodies of the mechanisms for detecting and guiding separate fibers are produced by the die casting method of zinc alloy, because in view of the required function of the guiding body it is necessary that the material from which the bodies are made leaks perfectly to form a precise and sufficiently smooth surface. in a portion of the body that includes a guide channel of sensed discrete fibers. At present, the above requirements are met by die casting of the zinc alloy into a steel mold equipped with a tractor for the shape of the inclined passageway.

During operation of the unit of the open-end spinning machine, i. j. by detaching and triaxing the fibers from the incoming fiber strand by the disengagement mechanism and detecting and discharging them into the guide channel, the detached and drawn-off disengaged roller surfaces severely strain the upper side of the guide channel at its inlet orifice.

The low abrasion resistance of the used zinc alloy is currently solved by reinforcing the separating edge at the sensing wall with a steel pin. However, this solution is labor-intensive and unreliable in operation since, despite several years of technology effort, it has not been possible to create a manufacturing process that would guarantee a flawless pin-to-edge connection at the sensor wall without any slots. by entering the guide channel. By collecting fibers of diameters in hundredths of a millimeter, clusters of fibers are formed which tear off over time and, upon entering the spinning rotor, cause the yarn to break or at least deteriorate.

A number of solutions have been developed to reduce the unfavorable effect of the separate fibers on the separation edge and the sensing wall by special treatment of these edges and walls, for example, according to GS patent no. 274,306, wherein the sensing wall is formed on the cylindrical peripheral wall of the cylindrical cavity in its circumferential direction at least in part lateral from its separating edge of the guide channel and its lower edge adjoining the peripheral cylindrical wall is guided in an arc from the second front wall of the cylindrical cavity to or beyond the parallel level of the separating edge, wherein the rectangular sensing wall extends away from the plane of the peripheral cylindrical wall in the direction of the guiding sensing wall and / or the upper wall of the guide channel to extend the sensing inlet and guide the fibers into the guide channel from .

The detached discrete fibers in the second half of the combing roller width should thus have more space and time to be removed from the combing roller coating and to be guided non-violently into the guide channel and to the separating edge. There is no intense blasting of the deflector sensing wall by separate fibers in which the guide channel and the sensing zone are formed.

Despite the above measures, due to the ever-increasing working power of the units of the spindle-free spinning machines and the increasing flow of fiber material through the guiding channel per time unit, the abrasion edge stress at the sensing wall also increases. The consequence of this is an operationally unbearable reduction in the service life of the separating edge and hence of the entire removable body of the detaching and guiding mechanism of the separate fibers.

Another effort to solve this problem is CS patent no. 278 432, wherein the guide body comprises an insert made of a different material from the other part of the guide body. In this case, at least part of the sensing wall of the separate fibers and the separating edge are formed in the insert.

However, the insert is difficult to manufacture because it has a complex geometric shape and would have to contain the entire guide channel and the sensing wall in order to be actually used. The price of the insert then exceeds its predicted utility.

SUMMARY OF THE INVENTION

The aforementioned disadvantages of the prior art are reduced or totally eliminated by the discrete fiber guide according to the invention, wherein the body portion comprising at least a portion of the sensing wall with a separating edge and a part of the discrete fiber guide channel is provided with an AlgO plasma coating. A particle size of from 5 µm to 40 µm.

The effects of the solution are manifested in increasing the service life of the exposed part of the body for sensing and guiding the separated fibers. The solution reduces production costs and eliminates complaints that make it difficult to position customers.

Overview of the figures in the drawing

Further advantages and effects of the solution result from the following description of an exemplary embodiment of the body for detecting and guiding the separate fibers and from the attached drawing, where FIG. 1 is an oblique view of the guide body of the detaching and guiding mechanism of the separate fibers; FIG. 2 shows a front view of the guide body and FIG. 3 shows a section through the guide body.

DETAILED DESCRIPTION OF THE INVENTION

The discrete fiber guiding body 1, which is fed from a known disintegrating roller of the disintegrating mechanism of an open-end spinning machine spinning unit, is disposed in the disintegrating unit of an open-end spinning machine between the disintegrating disintegrating machine and the disintegrating side. The guide body 1 comprises a sensing wall 2 to which the guide channel 4 of the sensed single fibers connects.

The intersection of the guiding channel sensing wall forms the inlet opening of the guiding channel 4, the portion of which faces upstream

- 5 the administration of separate fibers is called the separating edge J.

In another case, but not shown, can it be? a guide body formed as a body which embraces the combing roller in addition to the area of the fiber sliver feeding mechanism and is provided with a sensing wall to which a guide channel of sensed discrete fibers connects, the inlet opening of which is terminated with a separating edge.

Part of the body 1 comprising at least a portion of the sensing wall 2 with a separating edge J and a separate fiber guiding channel 6 is provided with an AlgOy plasma coating The grain size of the coating is at least 5 µm and at most 40 µm and has a Wickers hardness of 1700 to 2000 . After application, the AlgO4 plasma coating may be polished.

Claims (1)

PATENT An autonomous fiber guide positioned between the disintegrating roller separating mechanism and the open side of the spinning rotor, comprising a sensing wall to which a guided channel of sensed discrete fibers adjoins, the inlet of which comprises a separating edge disposed opposite the feed direction of the discrete fibers. The guide body (1) comprising at least a portion of the sensing wall (2) with a separating edge (3) and a part of the separate fiber guide channel (5) upstream of the separate fiber feeding direction is provided with a plasma coating having a grain size of 5µm to 40µm. lv 3 α-ρτ