Thrust angular contact ball bearing for spindle of textile machine

Abstract

The utility model discloses a thrust angular contact ball bearing for a textile machine spindle, which comprises an inner ring, an outer ring, a retainer and a plurality of steel balls, the plurality of steel balls are arranged between the inner ring and the outer ring, the retainer is sleeved on the plurality of steel balls, the inner ring is in the shape of a solid cylinder, the upper end of the inner ring protrudes upwards out of the end face of the outer ring, and the outer ring is sleeved on the retainer. The abutting end abuts against the spindle needle head. According to the thrust angular contact ball bearing for the spindle of the textile machine, the inner ring can effectively serve as a rotor to be in contact with the head of the spindle needle in a solid mode, then the inner ring and the outer ring are isolated from each other through the outer ring, the retainer and the steel balls, and therefore friction between the spindle needle and the rotor is reduced.

Description

Technical Field

[0001] The utility model relates to an angular contact ball bearing, and more specifically to a thrust angular contact ball bearing for a spindle of a textile machine. Background Art

[0002] The spindle of a textile machine is a main component in a textile machine. At present, a rotating piece is used in the spindle of the existing textile machine. The rotating piece contacts the head of the spindle needle. When the spindle needle rotates, it can reach 20,000 r / min. Therefore, the friction between the head of the spindle needle and the rotating piece is serious, which greatly reduces the service life of the spindle of the textile machine. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the purpose of the present utility model is to provide a thrust angular contact ball bearing that can effectively increase the service life of the spindle of a textile machine.

[0004] To achieve the above purpose, the present utility model provides the following technical solution: A thrust angular contact ball bearing for a spindle of a textile machine, including an inner ring, an outer ring, a cage and a plurality of steel balls. The plurality of steel balls are arranged between the inner ring and the outer ring. The cage is sleeved on the plurality of steel balls. The inner ring is in a solid cylindrical shape. The upper end of the inner ring protrudes upward from the upper end surface of the outer ring and serves as a contact end to abut against the head of the spindle needle. The lower end of the inner ring retracts upward into the lower end surface of the outer ring.

[0005] As a further improvement of the present utility model, an inner ring groove with an arc-shaped cross-section is provided on the outer side wall of the inner ring, and an outer ring groove with an arc-shaped cross-section is provided on the inner ring wall of the outer ring. The inner ring groove and the outer ring groove are combined to form a raceway structure for the steel balls to roll.

[0006] As a further improvement of the present utility model, a retaining edge is provided at the lower end of the outer ring. The retaining edge and the inner ring wall of the outer ring are in arc transition, and this arc transition serves as a part of the outer ring groove. The side edge of the retaining edge serves as the lower groove edge of the outer ring groove.

[0007] As a further improvement of the present utility model, the upper groove edge of the outer ring groove extends to the upper end surface of the outer ring. A circular clamping edge extending along the outer ring groove is provided at a position of the outer ring groove close to the upper edge of the outer ring. The circular clamping edge and the lower side edge of the outer ring groove are combined to limit the up and down movement of the steel balls.

[0008] The beneficial effect of the utility model is that, through the arrangement of the inner ring, the outer ring, the retaining frame and the steel ball, an angular contact ball bearing structure can be effectively formed, so that the rotation between the inner ring and the outer ring is isolated from each other, and by arranging a contact end on the inner ring, the inner ring can be used to replace the rotor in the prior art to abut against the spindle needle, and then the inner ring and the outer ring can rotate without affecting each other, so that the inner ring can follow the spindle needle to rotate, and the movement mode is changed to bearing rotation + friction rotation, which greatly reduces the friction between the spindle needle and the rotor and increases the service life of the spindle of the textile machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the installation of a bearing into a textile machine spindle;

[0010] Figure 2 The utility model is a schematic structural diagram of a thrust angular contact ball bearing for a textile machine spindle. DETAILED DESCRIPTION

[0011] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0012] Reference Figures 1 to 2 As shown, a thrust angular contact ball bearing for a textile machine spindle of the present embodiment comprises an inner ring 1, an outer ring 2, a retaining frame 4 and a plurality of steel balls 3, wherein the plurality of steel balls 3 are arranged between the inner ring 1 and the outer ring 2, and the retaining frame 4 is sleeved on the plurality of steel balls 3, and is characterized in that: the inner ring 1 is in the shape of a solid cylinder, the upper end of the inner ring 1 protrudes upward from the upper end surface of the outer ring 2, and serves as an abutting end against the spindle needle head, and the lower end of the inner ring 1 is retracted upward into the lower end surface of the outer ring 2. In the process of using the thrust angular contact ball bearing in the present embodiment, it is only necessary to install the bearing into the spindle of the textile machine so that the spindle head abuts against the upper end of the inner ring 1. In this way, during the rotation of the spindle, the inner ring 1 will rotate along with it, so that the movement mode becomes the bearing rotation + friction rotation, which greatly reduces the friction between the inner ring and the spindle head, and greatly increases the service life of the inner ring and the spindle head.

[0013] As an improved specific implementation, the outer wall of the inner ring 1 is provided with an inner ring groove 11 with an arc-shaped cross-section, and the inner ring wall of the outer ring 2 is provided with an outer ring groove 21 with an arc-shaped cross-section. The inner ring groove 11 and the outer ring groove 21 are combined to form a rolling track structure for the steel ball 3. Through the arrangement of the above structure, the rolling track structure for the steel ball 3 can be effectively formed through the inner ring groove 11 and the outer ring groove 21.

[0014] As an improved specific implementation, the lower end of the outer ring 2 is provided with an abutment 22, and an arc transition is formed between the abutment 22 and the inner ring wall of the outer ring 2. The arc transition serves as a part of the outer ring groove 21, and the side of the abutment 22 serves as the lower groove edge of the outer ring groove 21. By setting the abutment 22, the bearing capacity of the lower side of the outer ring 2 for the steel ball 3 can be effectively increased. Figure 1 As shown, the abutment edge 22 can be used to achieve a stronger load-bearing capacity than the existing angular contact ball bearings without affecting the rotation of the steel ball 3.

[0015] As an improved specific implementation method, the upper groove edge of the outer ring groove 21 extends to the upper end surface of the outer ring 2, and the outer ring groove 21 is provided with an annular clamping edge 23 extending along the outer ring groove 21 at a position close to the upper end edge of the outer ring 2. The annular clamping edge 23 is combined with the lower side edge of the outer ring groove 21 to limit the up and down movement of the steel ball 3. Through the setting of the annular clamping edge 23, the up and down movement of the steel ball 3 can be effectively restricted. By extending the upper groove edge of the outer ring groove 21 to the upper end surface of the outer ring 2, the outer ring groove 21 can be made into a bowl-shaped structure, the lower end has better bearing capacity, and the upper end has fewer restrictions on the ball 3, which can be well suitable for high-speed rotation occasions.

[0016] In summary, the thrust angular contact ball bearing for the textile machine spindle of the present embodiment is provided with a solid inner ring 1, and the upper end of the inner ring 1 is used as an abutment end to provide abutment to the spindle needle head, so that the inner ring 1 rotates at high speed with the spindle head, which greatly reduces the friction between the spindle head and the inner ring 1 and effectively increases the service life of the spindle.

[0017] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A thrust angular contact ball bearing for a spindle of a textile machine, comprising an inner ring (1), an outer ring (2), a cage (4) and a plurality of steel balls (3), the plurality of steel balls (3) being arranged between the inner ring (1) and the outer ring (2), the cage (4) being sleeved on the plurality of steel balls (3), characterized in that: The inner ring (1) is in the shape of a solid cylinder. The upper end of the inner ring (1) protrudes upward from the upper end face of the outer ring (2) and serves as a contact end to abut against the spindle nose. The lower end of the inner ring (1) is retracted upward into the lower end face of the outer ring (2).

2. The thrust angular contact ball bearing for a spindle of a textile machine according to claim 1, characterized in that: An inner ring groove (11) with an arc-shaped cross-section is formed on the outer side wall of the inner ring (1). An outer ring groove (21) with an arc-shaped cross-section is formed on the inner ring wall of the outer ring (2). The inner ring groove (11) and the outer ring groove (21) together form a raceway structure for the steel balls (3) to roll.

3. The thrust angular contact ball bearing for a spindle of a textile machine according to claim 2, characterized in that: A retaining edge (22) is provided at the lower end of the outer ring (2). The retaining edge (22) has a circular arc transition with the inner ring wall of the outer ring (2). This circular arc transition is part of the outer ring groove (21), and the side edge of the retaining edge (22) serves as the lower groove edge of the outer ring groove (21).

4. The thrust angular contact ball bearing for a spindle of a textile machine according to claim 3, characterized in that: The upper groove edge of the outer ring groove (21) extends to the upper end face of the outer ring (2). A circular retaining edge (23) extending along the outer ring groove (21) is provided at a position near the upper edge of the outer ring (2). The circular retaining edge (23) and the lower side edge of the outer ring groove (21) cooperate to limit the up-and-down movement of the steel balls (3).

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