CZ16577U1 - Combing roller, particularly for separating mechanism of spinning machine - Google Patents

Abstract

The utility model relates in particular to a release roll for the separators of a spinning machine. The release roll is used for separating fiber strips fed into the spinning machine. The utility model comprises a base body with a cylindrical surface and a ring-shaped sleeve collar on one edge; the cylindrical surface is provided with saw-tooth knitting cloth; an axial cavity is arranged in the interior of the base body for connecting a drive shaft, wherein, at least one surface of the base body (31) of the release roll (3) is constituted by flexible and deformable flanges (32, 33).

Description

A combing roller especially for the opening device of the spinning machine

Technical field

The invention relates to a combing roller, in particular, for the opening device of a spinning machine for filament joining of a fiber sliver comprising a cylindrical body with peripheral collars at the edges, provided with a saw coating on the cylindrical surface and an axial cavity.

BACKGROUND OF THE INVENTION

The spinning unit of the spinning machines comprises an opening device into which a fiber strand is fed from the spinning can. A driven combing roller is rotatably mounted in the opener body, the surface of which is provided with a saw coating over its entire width. The rotary comb roller saw blade captures the filament feed which is held in access by the comb roller in the nip forming line between the edge of the feed table and the surface of the fiber feed roller to the opener and combines individual filaments from the fiber feed into the spinning yarn. rotor.

The saw coating is formed as a set of saw rings or as a resilient saw spiral wound on the body of the support tube mounted on the comb roller or directly on the surface of the cylindrical body. The comb roller saw blade is a highly exposed component in terms of wear and needs to be replaced relatively frequently. The combing roller is mounted on the drive shaft, but its design allows the saw blade to be changed. The combing roller is provided with flanges on the ends, the outer diameter of which is usually greater than the outer diameter of the saw coat, the flanges being involved in guiding the combed fibers.

The combing roller is usually fixed by one part to the drive shaft and possibly additionally secured against mutual axial movement by a central screw screwed into the thread at the front of the drive shaft. For example, according to DE 10260507, the two base parts are connected by a plurality of screws placed on a pitch circle in the face of the combing roller or, for example, according to EP 450266, screwed by a large external central thread formed on one base and a corresponding internal thread formed in the other base. According to DE 10132867, the base parts are connected by a clip connection. Given the necessary alignment of the two parts in terms of dynamic balancing of the complete combing roller, the known methods of joining the parts thereof are expensive to produce.

The loose fiber particles and dust produced by the opening of the fiber strand adhere to the components of the opener device. In order to prevent these impurities from sticking to the combing roller faces, it is necessary that the surface of the combing rollers is as small as possible. This requires the fronts of both parts to be as full and smooth as possible. This increases the volume of material of the base parts and at the same time the weight of the combing roller.

The object of the invention is to eliminate or at least minimize the drawbacks of the prior art.

The essence of the technical solution

The object of the invention is achieved by a combing roller, in particular for the opener of the spinning machine for unifying fibers from a filament feed, comprising a cylindrical body with peripheral collars at the edges provided with a saw coating on the surface. formed by a resiliently deformable flange.

A significant advantage is that the outer diameter of the resiliently deformable flanges is larger than the outside diameter of the saw-coating and that the face of the resiliently deformable flange connected to the body face away from the drive shaft has a continuous surface. This greatly reduces the possibility of settling non-purity on the ends of the combing roller during operation of the opener, while providing the guiding of the combed fibers on the saw coating.

Preferably, the resiliently deformable flanges are formed from elastic technical plastic. The advantage is low weight of flanges, low production costs.

It is also advantageous that the flanges and the body comprise connecting means for their releasable connection to each other, and it is further preferred that the connecting means are designed as a resilient peripheral shape lock. The advantage is the easy connection of the flanges to the body.

According to a preferred solution, the combing roller body is made of a light metal alloy, the advantage being the low weight of the body and the optimum technology of its production by precise forming or by intermediate casting.

BRIEF DESCRIPTION OF THE DRAWINGS

1 shows a longitudinal section of a combing roller mounted on a drive shaft, FIG. 2 shows a longitudinal section of a combing roller in another alternative, FIG. 3 shows a detail 'A' of FIGS. 1 and 4; detail "B" of Fig. 1.

Examples of technical solution

The opening device of the spinning unit of the spinning machine comprises a body 1, a drive shaft 2 and a combing roller 3. In the body 1 of the opening device, the drive shaft 2 of the combing roller 3 is rotatably supported by rolling elements in a bearing body 4 firmly mounted in the body. In the embodiment according to FIG. 1, a combing roller 3 is pressed onto the drive shaft 2, the body 31 of which is provided with a saw coating 31 on the cylindrical surface. In an alternative embodiment not shown, the body 31 is provided with a central hole for known securing the axial position of the body 31 and the drive shaft 2. by means of a central screw and a thread at the front of the drive shaft 2.

The combing roller body 31 is preferably formed as a precision forging or precision cast from a light metal alloy containing, for example, aluminum.

According to FIG. 1, the combing roller body 31 has a central hub coupled to a circumferential cylindrical support portion which either directly serves to secure the saw coat 311 by any of the known technologies, for example by winding a continuous saw spiral into a shaped slot. connected to the cylindrical part of the combing roller body 31, or to the cylindrical part of the body 31, a tubular member (not shown) on which the above-described saw coating 38 is formed can be fixedly mounted.

The faces of the combing roller body 31 in the embodiment shown in FIG. 1 are covered by flanges 32 and 33. The flanges 32, 33 are preferably made of technical plastic, the resilience of which allows assembly and securing in the assembled state by means of a lock 312, 321.

In the exemplary embodiment of Figs. 3 and 4, the shape lock is formed by a circumferential groove 312 near the edge of the outer cylindrical surface of the combing roller body 31 and a corresponding collar 321 on the inner cylindrical surface of the flange 32. The groove 312 and collar 321 may have different shapes, e.g. 3, semicircular, according to FIG. 4 trapezoidal. The groove 312 and collar 321 may also have another shape that satisfies the requirement of a rigid connection in operation of the nocturnal device.

The flange 33 at the opposite end of the combing roller 3 forms an annulus, the size of its inner diameter being selected with a view to achieving a minimum radial clearance between this diameter and the outer diameter of the bearing body 4 necessary for contactless operation and prevention of impurities arising during operation of the opener. The connection of the flange 33 to the body 31 of the combing roller 3 is preferably provided with a lock which is identical to the described connection of the flange 32 and the body 31.

-2EN 16577 Ul

The closure of the shaped space of the combing roller body 31 is important in order to prevent the build-up of dust and fiber parts resulting from the unifying process. The solution by means of flexible plastic flanges 32, 33 is inexpensive to manufacture, makes it possible to achieve a very good sealing of said space, while impurities do not adhere to the smooth outer surface of the flanges.

FIG. 2 shows the combing roller body 31, which is flat on the side opposite the drive shaft 2, thus forming an integral face with the body 31 and, unlike the embodiment of FIG. 1, is provided with a plastic flange 33 only from the bearing body 4 side. In order to meet the requirements of the cleanliness of the flat face, it is important that it is as rugged as possible, for example, a countersunk head of a central locking screw (not shown), etc., which is not used, etc., is required.

The assembly of the combing roller 3 comprising the saw coat 311, the flange 33 and the flange 32, when assembled, is dynamically balanced with the drive shaft 2. In this way it is possible to prevent vibrations of the entire opener device at its high operating speed, in particular with regard to the length and weight of the combing roller 3.

Claims (6)

15 PROTECTION REQUIREMENTS A combing roller, in particular for an opening device of a spinning machine for unifying fibers from a filament of filaments comprising a body with a cylindrical surface and peripheral collars at the edges, provided with a sawtooth surface and an axial cavity for connecting it to the drive shaft, one face of the body (31) of the suction roller (3) is formed by a resiliently deformable flange (32, 33). A combing roller according to claim 1, characterized in that the outer diameter of the resiliently deformable flanges (32, 33) is larger than the outer diameter of the saw-coating (311). A combing roller according to claim 1 or 2, characterized in that the face of the resiliently deformable flange (32) connected to the face of the body (31) facing away from the drive shaft (2) has 25 continuous surface. A combing roller according to any one of the preceding claims, characterized in that the resiliently removable flanges (32, 33) are made of elastic technical plastic. A combing roller according to any one of the preceding claims, characterized in that the flanges (32, 33) and the body (31) comprise connecting means for their releasable connection to each other. 6. The combing roller according to claim 5, characterized in that the connecting means is in the form of a circumferential form lock (312, 321). 35 2 drawings List of reference marks: 1 - body of opener device 2 - drive shaft 3 - combing roller 40 31 - combing roller body 311 - saw cover 312 - circumferential groove (on combing roller body) 32 - flange 321 - flange circumferential collar 45 33 - flange 4 - bearing housing.