CN219233973U

CN219233973U - Labyrinth waterproof structure for direct-drive electric spindle

Info

Publication number: CN219233973U
Application number: CN202222936663.7U
Authority: CN
Inventors: 郑金胜; 刘丕; 林甲木; 王继学; 黄启业
Original assignee: Simuwe Precision Technology Zhejiang Co ltd
Current assignee: Simuwe Precision Technology Zhejiang Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-06-23
Anticipated expiration: 2032-11-04

Abstract

The utility model discloses a labyrinth waterproof structure for a direct-drive electric spindle, which comprises a spindle core and a shaft sleeve, wherein a bearing is arranged between the spindle core and the shaft sleeve, the waterproof structure is arranged at the ends of the spindle core and the shaft sleeve, the waterproof structure comprises a sealing ring, a front sealing cover and a front end cover, the sealing ring is sleeved at the front end part of the spindle core, the rear end surface of the sealing ring abuts against the front end surface of the bearing, the front sealing cover is sleeved on the sealing ring and forms a labyrinth structure with the sealing ring, the rear end of the front sealing cover abuts against the front end surface of the bearing and the front end surface of the shaft sleeve, the front end cover is sleeved at the front end part of the spindle core, and the rear end of the front end cover abuts against the front end of the front sealing cover. The waterproof structure adopts a split structure of the sealing ring, the front sealing cover and the front end cover, the sealing ring and the front sealing cover are combined to form the labyrinth structure, the disassembly, the installation and the maintenance are convenient, meanwhile, the disassembly and the installation time is saved, and the waterproof and anti-fouling effects can be improved by adopting the labyrinth structure.

Description

Labyrinth waterproof structure for direct-drive electric spindle

Technical Field

The utility model belongs to the technical field of electric spindle waterproofing, and particularly relates to a labyrinth waterproofing structure for a direct-drive electric spindle.

Background

The waterproof cover for main shaft is one kind of protector installed onto the direct driven electric main shaft to protect the inside parts of the main shaft from being corroded and damaged by water, dust, etc. If the dustproof and waterproof structure is not arranged, cutting fluid, scrap iron and the like can easily enter the main shaft to damage bearings and other parts under the severe use environment of the machine tool. Most of the existing industry uses an integral waterproof cover, so that the waterproof effect is poor, the maintenance is that the integral waterproof cover needs to be detached, and the cleaning is inconvenient.

Disclosure of Invention

The utility model aims to provide a labyrinth waterproof structure for a direct-drive electric spindle.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a labyrinth waterproof construction for directly driving formula motorized spindle, direct driving formula motorized spindle include axle core and axle sleeve, axle core and axle sleeve between be equipped with the bearing, waterproof construction locate the tip of axle core and axle sleeve, waterproof construction include sealing ring, preceding closing cap and front end housing, the front end at the axle core is established to the sealing ring cover, the preceding terminal surface of sealing ring rear end face offsets with the preceding terminal surface of bearing inner race, preceding closing cap cover establish at the sealing ring and with the sealing ring constitution labyrinth structure, the rear end of preceding closing cap offsets with the preceding terminal surface of bearing outer lane and the preceding terminal surface of axle sleeve, the front end cover establish the front end at the axle core, the rear end of front end housing offsets with the front end of preceding closing cap.

Preferably, the sealing ring comprises an inner ring piece, an outer ring piece and a connecting piece, wherein the inner ring piece and the outer ring piece are connected through the connecting piece and form a first groove.

Preferably, the width of the inner ring sheet is larger than the width of the outer ring sheet.

Preferably, the front side of the front sealing cover is provided with a second groove, the inner side and the outer side of the second groove are respectively provided with an inner sealing cover and an outer sealing cover, the inner sealing cover is inserted into the first groove, the rear end of the outer sealing cover abuts against the shaft sleeve, and the outer ring piece is inserted into the second groove.

Preferably, the front cover is provided with a first water drain hole, and the first water drain hole is communicated with the second groove.

Preferably, a plurality of third grooves are formed in the joint of the front end of the shaft core and the front end cover, second water draining holes are formed in the front end cover, and the second water draining holes are communicated with the third grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the waterproof structure adopts the split type structure of the sealing ring, the front sealing cover and the front end cover, the sealing ring and the front sealing cover are combined to form the labyrinth structure, the sealing ring, the front sealing cover and the front end cover can be directly detached and installed by adopting the split type structure, the maintenance is convenient, meanwhile, the time for detachment and installation is saved, and the waterproof and anti-fouling effects can be improved by adopting the labyrinth structure.

2. In the utility model, the two-stage water draining groove is arranged, and in the rotating process of the main shaft, foreign matters such as water, oil dust and the like can be thrown out by the shaft core end, and when a small part of the foreign matters possibly enter a gap of the front end cover, the foreign matters can flow out from the second water draining groove, so that the first water draining groove at the front end cover can drain water and dust secondarily for safety. So that foreign matters such as water, dust and the like cannot enter the bearing, and the bearing has a good protection effect.

Drawings

FIG. 1 is a cross-sectional block diagram of the present utility model;

FIG. 2 is a perspective view of the structure of the present utility model;

FIG. 3 is a schematic view of the structure of the center shaft of the present utility model;

FIG. 4 is a schematic view of the seal ring of the present utility model;

FIG. 5 is a schematic view of the front cover of the present utility model;

in the figure: 1. a shaft core; 2. a shaft sleeve; 3. a bearing; 4. a seal ring; 5. a front cover; 6. a front end cover; 11. a third groove; 41. an inner ring piece; 42. an outer ring piece; 43. a connecting sheet; 44. a first groove; 51. a second groove; 52. an inner cover; 53. an outer cover; 54. a first drain hole; 61. and a second water discharge hole.

Detailed Description

The technical solutions of the present embodiments will be clearly and completely described below with reference to the drawings in the present embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, based on the embodiments herein, which would be within the purview of one of ordinary skill in the art without the creative effort, are contemplated as falling within the scope of the present utility model.

Referring to fig. 1 to 5, the present embodiment relates to a labyrinth waterproof structure for a direct-drive electric spindle, the direct-drive electric spindle includes a spindle core 1 and a shaft sleeve 2, a bearing 3 is disposed between the spindle core 1 and the shaft sleeve 2, the waterproof structure is disposed at the ends of the spindle core 1 and the shaft sleeve 2, the waterproof structure includes a sealing ring 4, a front cover 5 and a front cover 6, the sealing ring 4 is sleeved at the front end of the spindle core 1, the rear end surface of the sealing ring 4 abuts against the front end surface of the inner ring of the bearing 3, the front cover 5 is sleeved at the sealing ring 4 and abuts against the front end surface of the outer ring of the bearing 3 and the front end surface of the shaft sleeve 2, the front cover 6 is sleeved at the front end of the spindle core 1, the rear end of the front cover 6 abuts against the front end of the front cover 6, the front cover 5 is fixedly connected with the shaft sleeve 2 through a bolt, the front cover 6 is connected with the front cover 5 through the bolt, and the front cover 2, the rear end of the front cover 5 abuts against the outer circumference of the shaft sleeve 6.

In the embodiment of the present application, the sealing ring 4 includes an inner ring 41, an outer ring 42 and a connecting piece 43, where the inner ring 41 and the outer ring 42 are connected by the connecting piece 43 and form a first groove 44. The width of the inner ring 41 is greater than the width of the outer ring 42. The front side of the front sealing cover 5 is provided with a second groove 51, the inner sealing cover 52 and the outer sealing cover 53 are respectively arranged on the inner side and the outer side of the second groove 51, the inner sealing cover 52 is inserted into the first groove 44, the rear end of the outer sealing cover 53 is abutted against the shaft sleeve 2, and the outer ring piece 42 is inserted into the second groove 51. The front cover 5 is provided with a first water drain hole 54, and the first water drain hole 54 is communicated with the second groove 51. The junction of the front end of the axle core 1 and the front end cover 6 is provided with a plurality of third grooves 11, the front end cover 6 is provided with a second water drain hole 61, and the second water drain hole 61 is communicated with the third grooves 11.

The principle of the utility model is as follows:

under the abominable operational environment of lathe, cutting fluid, iron fillings etc. can enter into electric main shaft very easily, and when the high-speed rotation of axle core 1, cutting fluid, foreign matter such as iron fillings can be thrown away by the axle core 1 end in the first place, and when few part probably got into the clearance of front end cover 6, can flow from the second water outlet 61 of below, and less part foreign matter enters into the clearance of front end cover 5, flows through the first water outlet 54 of below, owing to adopt labyrinth structure's waterproof antifouling mode, the foreign matter can't enter into in the sealing ring 4 to protect electric main shaft.

It will be evident to those skilled in the art that the present utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or scope of the utility model. Accordingly, the present embodiments are exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The labyrinth waterproof structure for the direct-drive electric spindle comprises a spindle core (1) and a shaft sleeve (2), wherein a bearing (3) is arranged between the spindle core (1) and the shaft sleeve (2), and the waterproof structure is arranged at the end parts of the spindle core (1) and the shaft sleeve (2), and is characterized in that the waterproof structure comprises a sealing ring (4), a front sealing cover (5) and a front sealing cover (6), the sealing ring (4) is sleeved at the front end part of the spindle core (1), the rear end surface of the sealing ring (4) is propped against the front end surface of the inner ring of the bearing (3), the front sealing cover (5) is sleeved on the sealing ring (4) and forms a labyrinth structure with the sealing ring (4), the rear end of the front sealing cover (5) is propped against the front end surface of the outer ring of the bearing (3) and the front end surface of the shaft sleeve (2), and the front sealing cover (6) is sleeved at the front end part of the spindle core (1), and the rear end of the front sealing cover (6) is propped against the front end of the front sealing cover (5). The front side of the front sealing cover (5) is provided with a second groove (51), the front sealing cover (5) is provided with a first water discharge hole (54), and the first water discharge hole (54) is communicated with the second groove (51); a plurality of third grooves (11) are formed in the joint of the front end of the shaft core (1) and the front end cover (6), second water discharge holes (61) are formed in the front end cover (6), and the second water discharge holes (61) are communicated with the third grooves (11).

2. Labyrinth waterproof structure for direct-drive motorized spindle according to claim 1, characterized in that the sealing ring (4) comprises an inner ring piece (41), an outer ring piece (42) and a connecting piece (43), wherein the inner ring piece (41) and the outer ring piece (42) are connected through the connecting piece (43) and form a first groove (44).

3. Labyrinth waterproof structure for direct drive motorized spindle as claimed in claim 2, characterized in that the width of the inner ring sheet (41) is greater than the width of the outer ring sheet (42).

4. The labyrinth waterproof structure for the direct-drive motorized spindle according to claim 2, wherein the inner side and the outer side of the second groove (51) are respectively provided with an inner sealing cover (52) and an outer sealing cover (53), the inner sealing cover (52) is inserted into the first groove (44), the rear end of the outer sealing cover (53) abuts against the shaft sleeve (2), and the outer ring piece (42) is inserted into the second groove (51).