PL170296B1 - Component assembly for textile combers and fixed comb for such machines - Google Patents

Abstract

In a clothing for textile combing machines, such as combing machines for wool, cotton or similar synthetic or natural fibres, comprising saw-toothed stamped parts with at least two rows of teeth extending transversely relative to the combing direction, in order to achieve a tip offset at a low outlay in terms of production, along with simple clothing, the planes of respective teeth (5) succeeding one another within a stamped part (1) are arranged offset relative to one another. <IMAGE>

Description

The subject of the invention is a fixed comb for a textile combing machine for wool and cotton, comprising a plurality of adjacent needles or cut elements with sawtooths with sharp ends, the ends of the needles or the cut portions protruding freely downwards, characterized by sharp edges the ends in the area of their free projection are bent like a sickle. It has been found that there is a densification inside this curvature which leads to a particularly effective combing effect. The radius of curvature may preferably be from 8 to 35 mm, the curvature may be in the range of an angle of from 18 ° to 100 °.

170 296

The subject of the invention is shown in the embodiment in the drawing, in which fig. 1 shows a partial, perspective view of the fixed comb according to the invention with curved needle points, fig. 2 - side view of the fixed comb of fig. 1, and fig. 3 shows a partial view. on the front of the fixed comb of Fig. 1.

Figures 1 to 3 show a fixed comb according to the invention. The comb 1 comprises a comb carrier 2 permanently attached to the textile machine and a sheet metal cover 3, whereby a large number of needles 4 are arranged between the comb carrier 2 and the cover 3. The sharp ends 5 project freely beyond the lower edge 6 or 7 of the comb carrier 2 or cover 3. In this region, as can be seen clearly from FIG. 2, the needles are sickle-bent around the center point M in the range of angle [alpha], according to a radius of curvature R ranging from 8 to 35 mm. The angle? May be from 18 ° to 100 °.

FIG. 1

FIG. 2 FIG. 3

Publishing Department of the Polish Patent Office. Circulation of 90 copies. Price PLN 2.00

Claims (3)

Patent claims 1. Fixed comb for textile combing machines for wool and cotton, comprising a large number of adjacent needles or cut elements with saw teeth with sharp ends, the sharp ends of the needles or the cut elements protruding freely downwards, characterized in that the sharp ends (5) in the area where they protrude freely, they are crescent-shaped. 2. The fixed comb according to claim 1 The method of claim 1, wherein the radius (R) of curvature is 8 to 35 mm. 3. The fixed comb according to claim 1 The method of claim 1, characterized in that the curvature comprises an angle (α) comprised between 18 ° and 100 °. The invention relates to a fixed comb for textile combing machines, such as wool, cotton or similar artificial or natural fibers. Such elements are made in the form of fixed combs and can be incorporated into various types of textile machines. They are especially used as combs for wool or plastic fiber combs and for cotton. The fixed comb must in this case ensure the cleaning of those parts of the fibers which, looking towards the unwound fiber web, are not caught by the circular comb arranged in front of the fixed comb. As a result, the fixed combs are generally heavily loaded and the impurities present in the wool or cotton, including parts of plants or other organic elements, are deposited thereon. The short fibers or debris then become deposited in the gaps between the flat needles running in the combing direction. This has the consequence that, when determining the distribution of the sharp ends or the density of the needles in the fixed comb, a compromise is required between the desired combing efficiency and the danger of rapid clogging, whereby the optimum density of the sharp ends is usually not usually achieved. A particularly advantageous configuration is that the first row of needles is followed by a second row of needles which is offset from the first row of needles such that the sharp ends of the second row of needles are spaced between the needles of the first row. However, the use of two different types of cut parts is very disadvantageous and costly in terms of manufacturing and mounting the assembly in the machine. A further disadvantage of such a known needle strip is that it is not possible to clean the needles with compressed air, as is known from DEPS 37 22 481, which has proved to be particularly advantageous for fixed combs and it would be of particular importance to carry out such cleaning. for the density of the blades which is formed when the two-row blades are mutually offset from each other. In addition to the fixed comb, such an assembly can also be used in a brushing cylinder, as described e.g. in DEOS 29 44 644. Two different types of saw-tooth cut elements, with the use of a sharp tip offset, are alternately arranged, with their base entering into fastening groove. CH-PS 644902 describes an offset arrangement of blades in cut members with saw teeth used in a cover assembly on a carding machine. In GB-PS 1411 433 a group of needles of a combing roller with offset blades is described.