Special bearing for spindle

Abstract

The utility model relates to the technical field of textile machinery, in particular to a bearing special for a spindle. A spindle in a two-for-one twister is a key component, the requirement for the spindle during high-speed operation is high, the requirement for a bearing in the spindle is high, and in the prior art, the bearing is short in service life, poor in sealing performance, prone to volatilization of lubricating oil, short in replacement period and high in cost. According to the bearing special for the spindle, a retainer is flush with one end of an outer ring, and a sealing cover is located on the other side of the retainer; the sealing cover comprises a framework and a sealing ring, the sealing ring is composed of three parts, namely a first sealing ring and a second sealing ring which are of lip-shaped structures, and the first sealing ring and the second sealing ring are connected to form a concave cavity used for storing overflowing grease. The retainer is flush with one end of the outer ring, the retainer is effectively supported and prevented from moving downwards, the bearing force of a spindle is high, double sealing of the first seal and the second seal is adopted, the sealing performance is good, volatilization of lubricating grease is reduced, the service life of the bearing is greatly prolonged, the replacement period of the bearing is prolonged, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of textile machinery, and more specifically to a special bearing for spindles. Background Art

[0002] The two-for-one twister is a twisting device with a high speed of at least 10,000 rpm. It can achieve two twists per turn, and the twisting efficiency is doubled compared with traditional twisting equipment. The package capacity is increased, 10,000 meters without joints, the twisting quality is greatly improved, and the lower layer height is particularly suitable for operation. The two-for-one twister can twist and bond two or more single yarns into strands, and enhance the performance of the original yarn to meet customer needs.

[0003] The spindle in the two-for-one twisting machine is a key component. Due to the high-speed operation, the requirements for the spindle are high, and the requirements for the bearings in the spindles are correspondingly high. The spindles need to support the high-speed operation. However, the bearings in the prior art have a short life, poor sealing, easy volatile lubricating oil, a short bearing replacement cycle, and a relatively high cost. Utility Model Content

[0004] The utility model aims to provide a special spindle bearing with reasonable structure and good sealing performance in view of the shortcomings of the prior art.

[0005] A special bearing for spindles, including an outer ring, a cage, a roller and a sealing cover, wherein the cage is flush with one end of the outer ring, and the sealing cover is located on the other side of the cage; the sealing cover includes a frame and a sealing ring, and the sealing ring is composed of three parts, a first sealing ring and a second sealing ring of a lip-shaped structure, and the first sealing ring and the second sealing ring are connected to form a concave cavity for storing overflowing grease. The cage is flush with one end of the outer ring, which can effectively support the cage and prevent the cage from moving downward, that is, the spindle has a strong supporting force, and the double sealing of the first sealing ring and the second sealing is adopted, the sealing performance is good, the volatilization of lubricating grease is reduced, the service life of the bearing is greatly improved, the bearing replacement cycle is extended, the cost is reduced, and the economic benefits are improved.

[0006] As a further improvement and supplement to the above solution, the utility model also includes the following additional technical features:

[0007] The outer ring is provided with a first groove for assembling the sealing cover, a second groove for accommodating the roller, and protrusions are provided at both ends of the second groove for axially fixing the roller. The structure is reasonable, positioning is effectively performed, and assembly and disassembly are convenient.

[0008] The cage is a tubular structure, and a plurality of cavities are arranged on the wall of the cage, and the height and width of the cavities are larger than those of the rollers. The structure is reasonable, and the normal operation of the rollers is ensured.

[0009] The rollers are cylindrical and the number is 3 or more. The structure is reasonable and the processing and assembly are convenient.

[0010] The sealing ring is made of rubber and the frame is made of metal, so the structure is reasonable and the sealing performance is good.

[0011] The following beneficial effects can be achieved by using the utility model: the utility model has a reasonable structure, the cage and one end of the outer ring are flush, the cage can be effectively supported to prevent the cage from moving downward, that is, the supporting force of the spindle is strong, and the double seal of the first sealing ring and the second sealing is adopted, the sealing performance is good, the volatilization of lubricating grease is reduced, the service life of the bearing is greatly improved, the bearing replacement cycle is extended, the cost is reduced, and the economic benefit is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is the front view of the utility model.

[0014] Figure 3 It is a top view of the utility model.

[0015] Figure 4 This utility model Figure 2 A partial enlarged view is shown.

[0016] Figure 5 It is a structural schematic diagram of the outer ring 1 in the utility model.

[0017] Figure 6 It is a structural schematic diagram of the retaining frame 2 in the utility model. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-6 As shown, the utility model is a special bearing for spindles.

[0020] The spindle-specific bearing described in this embodiment includes an outer ring 1, a retainer 2, a roller 3 and a sealing cover 4. Both ends of the outer ring 1 are arranged in arcs, a retainer 2 is arranged inside the outer ring 1, and a roller 3 is arranged on the retainer 2. The retainer 2 and one end of the outer ring 1 are flush, and the sealing cover 4 is located on the other side of the retainer 2, and the sealing cover 4 is arranged below the end surface of the outer ring 1. The sealing cover 4 includes a frame 41 and a sealing ring 42, and the sealing ring 42 is sleeved on the frame 41. The sealing ring 42 is composed of three parts, a first sealing ring 421 and a second sealing ring 423 of a lip-shaped structure, the first sealing ring 421 and the second sealing ring 423 are arranged in an oblique inward structure, and the two are double-sealed. The first sealing ring 421 and the second sealing ring 423 are connected to form an annular concave cavity 422 for storing overflowed grease.

[0021] Furthermore, the outer ring 1 is provided with a first groove 11 for assembling the sealing cover 4; a second groove 12 is provided for accommodating the roller 3; protrusions 13 are provided at both ends of the second groove 12 for axially fixing the roller 3, and the protrusions 13 are arc-shaped structures.

[0022] Furthermore, the cage 2 is a tubular structure, and a plurality of cavities are arranged on the circumferential surface of the tube wall, and the height and width of the cavities are larger than the rollers 3. The height and width of the cavities and the gap between the rollers 3 are at least 0.1 mm.

[0023] Furthermore, the rollers 3 are cylindrical, and the number thereof is 3 or more.

[0024] Furthermore, the sealing ring 42 is made of rubber, and the frame 41 is made of metal.

[0025] The above are preferred implementations of the present invention, which do not limit the protection scope of the present invention. Any modifications and improvements made by those skilled in the art based on the design ideas of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A special bearing for spindles, comprising an outer ring (1), a cage (2), rollers (3) and a sealing cover (4), characterized in that: The retaining frame (2) and the outer ring (1) are flush at one end, and the sealing cover (4) is located at the other side of the retaining frame (2); the sealing cover (4) comprises a frame (41) and a sealing ring (42); the sealing ring (42) comprises three parts, a first sealing ring (421) and a second sealing ring (423) of a lip-shaped structure; the first sealing ring (421) and the second sealing ring (423) are connected to form a concave cavity (422) for storing overflowed grease.

2. The spindle-specific bearing according to claim 1, characterized in that: The outer ring (1) is provided with a first groove (11) for assembling the sealing cover (4); a second groove (12) is provided for accommodating the roller (3); and protrusions (13) are provided at both ends of the second groove (12) for axially fixing the roller (3).

3. The spindle-specific bearing according to claim 1, characterized in that: The retaining frame (2) is a tubular structure, and a plurality of cavities are arranged on its tube wall. The height and width of the cavities are larger than those of the rollers (3).

4. The spindle-specific bearing according to claim 1, characterized in that: The rollers (3) are cylindrical and the number thereof is 3 or more.

5. The spindle-specific bearing according to any one of claims 1 to 4, characterized in that: The material of the sealing ring (42) is rubber, and the material of the frame (41) is metal.

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