A spindle waterproof labyrinth structure

Abstract

The utility model discloses a main shaft waterproof labyrinth structure, including the front end cover of fixed in the front end of casing, rotates and installs the main shaft in the casing, and the main shaft projects to the outside along the axial direction with abrasive tool fixed seat fixed connection, install the labyrinth subassembly for waterproof between the front end cover and abrasive tool fixed seat, it includes fixed ring and moving ring, and both rotatable sleeve sets together, fixed ring includes fixed ring fixed ring, and it is fastened with the front end cover, still includes fixed ring outer ring and fixed ring inner ring, and the first end of both is along the radial sealing fixed through sealing washer, and the second end between both forms fixed ring groove of annular, and the second end of fixed ring outer ring is provided with outer ring baffle, and it extends along the radial direction to fixed ring inner ring, and the end surface of outer ring baffle is provided with outer water stop ring along the axial direction, and it extends to the end surface of moving ring, the second end outer wall of fixed ring inner ring is provided with inner water stop ring along the radial direction, the utility model discloses can satisfy the different installation demand of main shaft, and good applicability, and the waterproof performance is higher.

Description

Technical Field

[0001] This utility model relates to the field of spindle waterproofing technology, specifically to a spindle waterproof labyrinth structure. Background Technology

[0002] The spindle is the shaft that drives the workpiece, grinding wheel, or cutting tool to rotate. It typically consists of a spindle, bearings, and transmission components (gears or pulleys), and is mainly used to support transmission parts and transmit motion and torque.

[0003] During the grinding process driven by the spindle, liquid is sprayed to achieve cooling, lubrication, chip removal, and dust reduction, thereby improving processing efficiency, extending equipment life, and ensuring operational safety. Therefore, the spindle needs to be designed to be waterproof to prevent moisture from entering the spindle or motor, thus avoiding equipment malfunctions and safety hazards.

[0004] The utility model with authorization announcement number CN208797761U discloses a motor for manually adjusting the axial feed of the output shaft, which includes a labyrinth inner cover and a labyrinth outer cover for protective purposes. However, its structure is too complex, consisting of two hollow cylinders fitted together, and its waterproof effect is limited. Utility Model Content

[0005] In order to overcome at least one of the technical problems existing in the prior art, this utility model provides a waterproof labyrinth structure for the spindle, which can meet different installation requirements of the spindle, has good applicability, and higher waterproof performance.

[0006] A waterproof labyrinth structure for a spindle includes a front cover fixed to the front end of a housing, and a spindle rotatably mounted inside the housing. The spindle extends axially beyond the front cover and is fixedly connected to a mold mounting base. A waterproof labyrinth assembly is installed between the front cover and the mold mounting base, comprising a fixed ring and a moving ring rotatably fitted together. The fixed ring includes a fixed ring retaining ring fastened to the front cover, and also includes an outer ring and an inner ring. The first ends of the two rings are radially sealed and fixed by a sealing ring, and an annular space is formed between their second ends. The ring groove has an outer ring retaining ring at the second end of the outer ring of the fixed ring, which extends radially toward the inner ring of the fixed ring. An outer water-retaining ring is provided on the end face of the outer ring retaining ring along the axial direction, which extends toward the end face of the moving ring. An inner water-retaining ring is provided on the outer wall of the second end of the inner ring of the fixed ring along the radial direction. The outer water-retaining ring and the inner water-retaining ring do not contact each other. The moving ring includes a moving ring fixing ring, which is sealed and fastened to the mold fixing seat, and a moving ring sleeve ring provided on the first end of the moving ring fixing ring along the axial direction, which is inserted into the fixed ring groove along the axial direction. A moving ring water-retaining ring is provided on the outer wall of the first end of the moving ring sleeve ring along the radial direction.

[0007] In some embodiments, the retaining ring and the outer ring are fixed side by side along the axial direction, and the retaining ring is detachably threaded to the outer wall of the front end cover.

[0008] In some embodiments, the retaining ring and the inner ring are fixed side by side along the axial direction, and the retaining ring is detachably threaded to the inner wall of the front end cover.

[0009] In some embodiments, a retaining ring is radially disposed on the outer wall of the first end of the outer ring of the retaining ring, the end face of the retaining ring is in contact with the end face of the front end cover, and is locked by fasteners.

[0010] Compared with the prior art, the technical solution of this utility model has the following advantages: the waterproof labyrinth structure of this spindle has multiple waterproof structures arranged in the radial and axial directions, which can meet different installation requirements of the spindle, has good applicability, and higher waterproof performance.

[0011] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0013] Figure 1 This is a schematic diagram of the appearance when the present application is installed horizontally;

[0014] Figure 2 This is a schematic diagram of the appearance when the present application is installed vertically;

[0015] Figure 3 This is a cross-sectional structural diagram of this application;

[0016] Figure 4 This is a cross-sectional structural diagram at point A in the first embodiment;

[0017] Figure 5 This is a cross-sectional structural diagram of point A in the second implementation method;

[0018] Figure 6 This is a cross-sectional structural diagram of point A in the third implementation method;

[0019] Figure 7 This is a schematic diagram of the main view of the maze components;

[0020] Figure 8 This is a cross-sectional structural diagram of the maze components;

[0021] Figure 9 This is a front-view 3D structural diagram of the maze components;

[0022] Figure 10 This is a rear-view 3D structural diagram of the maze components.

[0023] Figure label:

[0024] 1. Housing; 2. Front cover; 3. Spindle; 4. Mold holder;

[0025] Fixed in circle 5;

[0026] 50, outer ring, inner ring, and sealing ring.

[0027] 54. Fixed ring groove; 55. Outer ring retaining ring; 56. Outer water retaining ring; 57. Inner water retaining ring;

[0028] Dynamic coil 6;

[0029] Moving ring fixing ring 60, moving ring sleeve ring 61, moving ring water-blocking ring 62;

[0030] Fastener 7. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Reference Figures 1-10 A waterproof labyrinth structure for a main shaft includes a front cover 2 fixed to the front end of the motor housing 1, and a main shaft 3 rotatably installed inside the housing 1. The main shaft 3 extends axially to the outside of the front cover 2 and is fixedly connected to the mold fixing seat 4. A waterproof labyrinth assembly is installed between the front cover 2 and the mold fixing seat 4, which includes a fixed ring 5 and a moving ring 6, which are rotatably fitted together. The fixed ring 5 and the moving ring 6 can be integrally molded from rubber, plastic, etc., or made of metal or other materials. The fixed ring 5 and the moving ring 6 can be 3D printed, or made by metal machining or welding, etc.

[0036] The fixed ring 5 includes a fixed ring fixing ring 50, which is fastened to the front end cover 2, and also includes a fixed ring outer ring 51 and a fixed ring inner ring 52, which are preferably concentrically arranged to ensure accuracy and rotational stability. The first ends of the two are sealed and fixed radially by a sealing ring 53, and an annular fixed ring groove 54 is formed between the second ends of the two. The second end of the fixed ring outer ring 51 is provided with an outer ring retaining ring 55, which extends radially toward the fixed ring inner ring 52, but does not contact it; the end face of the outer ring retaining ring 55 is provided with an outer water baffle ring 56 along the axial direction, which extends toward the end face of the moving ring 6, but does not contact it; the outer wall of the second end of the fixed ring inner ring 52 is provided with an inner water baffle ring 57 along the radial direction, and the outer water baffle ring 56 and the inner water baffle ring 57 do not contact each other.

[0037] The moving ring 6 includes a moving ring fixing ring 60, which is sealed and fastened to the mold fixing seat 4, and also includes a moving ring sleeve ring 61 arranged axially at the first end of the moving ring fixing ring 60, which is inserted axially into the fixed ring groove 54. The outer wall of the first end of the moving ring sleeve ring 61 is provided with a moving ring water baffle ring 62 in the radial direction.

[0038] In use, the fixed ring 5 is sealed and fixedly connected to the front cover 2 through the fixed ring fixing ring 50, and the moving ring 6 is sealed and fixedly connected to the grinding wheel fixing seat 4 through the moving ring fixing ring 60. When the spindle 3 rotates, it drives the grinding wheel fixing seat 4, the grinding wheel installed on the end face of the grinding wheel fixing seat 4, and the moving ring 6 to rotate synchronously. The fixed ring 5 and the moving ring 6 are rotatably fitted together and will not hinder the operation of the grinding wheel.

[0039] Spindle 3 can be installed horizontally during use (e.g., ...). Figure 1 (as shown) or vertically mounted (e.g.) Figure 2(As shown).

[0040] When the spindle 3 is installed horizontally, the outer retaining ring 55, the moving ring water-blocking ring 62, and the inner water-blocking ring 57 will form multiple maze-like barriers to prevent water from flowing inward. When the spindle 3 is not working, the liquid will automatically flow out from the bottom to the ground under its own weight. When the spindle 3 is working, the liquid will be thrown out under centrifugal force.

[0041] When the spindle 3 is installed vertically and the mold mounting base 4 faces the ground, there is no need to worry about waterproofing, because the liquid will automatically flow to the ground and cannot enter the interior.

[0042] When the spindle 3 is installed vertically and the mold mounting base 4 faces the sky, the outer water baffle ring 56, the moving ring sleeve ring 61, the inner water baffle ring 57, etc. will form multiple maze-like barriers to prevent water from flowing inward. In addition, the gap between the moving ring 6 and the fixed ring 5 is very small, making it difficult for liquid to splash in. When the spindle 3 is working, the liquid will be thrown out under centrifugal force.

[0043] This spindle features a waterproof labyrinth structure with multiple waterproof features along the radial and axial directions, meeting various installation requirements of the spindle and offering excellent applicability and superior waterproof performance.

[0044] Refer to Figure 4 In some embodiments, the fixed ring 50 and the outer ring 51 are fixed side by side along the axial direction, and the fixed ring 50 is detachably threaded to the outer wall of the front cover 2, making installation and disassembly convenient.

[0045] Refer to Figure 5 In some embodiments, the fixing ring 50 and the inner ring 52 are fixed side by side along the axial direction, and the fixing ring 50 is detachably threaded to the inner wall of the front cover 2, making installation and disassembly convenient.

[0046] Refer to Figure 6 In some embodiments, the fixed ring 50 is radially disposed on the outer wall of the first end of the outer ring 51. The end face of the fixed ring 50 is in contact with the end face of the front cover 2, and the end face of the moving ring 60 is in contact with the end face of the mold. Both of them are locked together by fasteners 7, which are convenient for installation and disassembly. The fasteners can be screws, bolts, or other fasteners.

[0047] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A waterproof labyrinth structure for a spindle, comprising a front cover fixed to the front end of a housing, and a spindle rotatably mounted inside the housing, the spindle extending axially beyond the front cover and fixedly connected to a mold mounting base, characterized in that: A waterproof labyrinth assembly is installed between the front end cover and the mold mounting base. This assembly includes a fixed ring and a moving ring, which are rotatably fitted together. The fixed ring includes a fixed ring retaining ring, which is fastened to the front end cover, and an outer ring and an inner ring. The first ends of both rings are radially sealed and fixed by a sealing ring. An annular groove is formed between their second ends. An outer ring retaining ring is provided at the second end of the outer ring, extending radially toward the inner ring. An outer water-retaining ring is provided axially on the end face of the outer ring retaining ring, extending toward the end face of the moving ring. An inner water-retaining ring is provided radially on the outer wall of the second end of the inner ring, and the outer and inner water-retaining rings do not contact each other. The moving ring includes a moving ring retaining ring, which is sealed and fastened to the mold mounting base, and a moving ring connecting ring axially positioned at the first end of the moving ring retaining ring, which is inserted axially into the fixed ring groove. A moving ring water-retaining ring is provided radially on the outer wall of the first end of the moving ring connecting ring.

2. The main shaft water-proof labyrinth structure as claimed in claim 1, wherein: The retaining ring and the outer ring are fixed side by side along the axial direction, and the retaining ring is detachably threaded to the outer wall of the front cover.

3. The main shaft water-proof labyrinth structure as claimed in claim 1, wherein: The retaining ring and the inner ring are fixed side by side along the axial direction, and the retaining ring is detachably threaded to the inner wall of the front cover.

4. The main shaft water-proof labyrinth structure as claimed in claim 1, wherein: The fixing ring is radially disposed on the outer wall of the first end of the outer ring of the fixing ring. The end face of the fixing ring is in contact with the end face of the front cover and is locked by fasteners.

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