DE2125619A1 - Draw rollers - on bearing bushes housing both roller and ball bearings - Google Patents

Abstract

The bearing bushes at each end of the mounting shaft, to take the upper roller pairs, contain an outer ball bearing and inner roller bearing assembly, separated from each other by a distance ring which also acts as the bush's axial mounting. The purpose is to provide a flexible bearing system to accommodate all the pressure loadings required according to the wide variety of fibre types which can be passed through after spinning.

Description

Top roller twin The invention relates to a top roller twin for drafting systems on spinning machines, whose casing sleeves are on a common Axle mounted with two rows of rolling elements arranged at a distance from one another are that roll directly on the axis and in the bore of the jacket sleeves.

Known top roll twins are used for low or high top roll loading pressures manufactured and under the technical terms "light series" or heavy series " guided The upper roller twins of the light series are single-row or double-row Ball bearings, while double row roller bearings are used for the heavy series will. In both cases, the rolling bearings can be either full complement or

be fully spherical or the rolling elements of the rolling bearings can be caged. The rolling bearings without a cage contain a larger number Rolling elements and therefore have a higher load capacity and better economy on.

Modern drafting systems have to use different fiber materials perfectly to process. This requires the use of very different top roller loads! For example, the top roll loading pressures are when processing long staple Synthetic material is much higher than when processing short-staple cotton The requirement to be able to process all fiber materials requires that too the bearings of the top rollers must be designed so that with low and high Upper roll load pressures can be worked, The invention The underlying task is to create a top roller bearing suitable for this purpose and it is proposed according to the invention that the outer rows of rolling elements each full complement and the respective inner rows of rolling elements are full complement.

The inventive design of the top roller bearing the requirements in terms of load-bearing capacity and ease of manufacture considered.

The dimeric rolling element series that are subjected to the highest stress are, are designed with full complement and therefore have a high load-bearing capacity, while the outer rows of rolling elements are provided with balls that are easier to manufacture, whose load-bearing capacity is sufficient at this point.

The twin top rollers according to the invention are advantageously designed in such a way that that the facing end faces of the rollers of the two inner rows of rolling elements run up against the shoulders of the axle and the balls of the two outer rows of rolling elements between inner grooves on the axle and the smooth cylindrical bore of the Unroll the jacket sleeves. In order to fix the jacket sleeves axially, the invention proposes before that between the two rows of rolling elements of a jacket sleeve each have a spacer ring is arranged, which is axially fixed in the jacket sleeve.

The axial fixation of the spacer ring in the jacket sleeve can be achieved by a snap ring made in opposing annular grooves in the circumferential surface of the spacer ring and engages in the bore of the jacket sleeve.

However, it is also possible that the spacer ring in the bore of the Jacket sleeve is glued in place.

The spacer ring can advantageously be made of plastic or another consist of non-metallic material.

The Ausfünrungsbeispiel shown in the drawing shows a partial longitudinal section through an upper roller twin according to the invention. On the Axis 1, the two jacket sleeves 2 and 3 are mounted with two rows of rolling elements, whose rolling elements roll directly on the axle and in the bore of the casing sleeves.

The outer row of rolling elements 4 is fully spherical and the inner row of rolling elements 5 executed with full complement. The rollers of the inner row of rolling elements 5 run at the front on a shoulder 6 of the axle. The balls of the outer row of rolling elements 4 run in an inner raceway on the axle, while the smooth-cylindrical one is used as the outer raceway Bore of the jacket sleeve is used. In such an embodiment, the Sheath sleeves not axially fixed via the rolling elements.

A spacer ring 7 is therefore used as an axial fixation, with a snap ring 8 is axially fixed in the jacket sleeve. However, it is also possible glue the spacer ring into the jacket sleeve.

Claims (5)

Expectations 1. Upper roller twin for drafting systems on spinning machines, its Jacket sleeves on a common axis with two spaced apart arranged Wälzkorperreihen are stored, characterized in that the each outer rows of rolling elements full complement and the respective inner rows of rolling elements full complement are executed. 2. Upper roller twin according to claim 1, characterized in that the facing end faces of the rollers of the two inner rows of rolling elements run up against the shoulders of the axle and the balls of the two outer rows of rolling elements between inner grooves on the axle and the smooth cylindrical bore of the Unroll jacket sleeves, with a jacket sleeve between the two rows of rolling elements in each case a spacer ring is arranged which is axially fixed in the jacket sleeve. 3. Upper roller twin according to claim 2, characterized in that the axial fixation of the spacer ring in the jacket sleeve by a snap ring takes place in opposing annular grooves in the circumferential surface of the spacer ring and engages in the bore of the jacket sleeve. 4. upper roller twin according to claim 2, characterized in that the spacer ring is glued into the bore of the jacket sleeve. 5. upper roller twin according to claim 2, characterized in that the spacer ring is made of plastic or another non-metallic material.