Novel rotary table sealing structure

Abstract

The utility model discloses a novel rotary table sealing structure, which relates to the technical field of motors, and comprises a box body serving as a whole machine supporting piece, a sealing seat is mounted on one side of the box body, a protective cover is mounted on one side of the sealing seat, the protective cover is fixedly connected with a shaft core, a rotary sealing piece is arranged between the sealing seat and the shaft core, and the rotary sealing piece is mounted on the sealing seat. A groove inner hole used for installing the protecting cover is formed in one side of the sealing seat, after the protecting cover is installed in the groove inner hole, the unilateral gap between the outer circle of the protecting cover and the groove inner hole is smaller than or equal to 0.05 mm, and a groove and a drainage groove are further formed in the sealing seat. A common rotary seal and an innovatively-designed mechanical labyrinth are designed in an integrated mode, product reliability is greatly improved, the phenomena that small impurities and corrosive fluid are accumulated in local gaps of rotary sealing pieces, the sealing pieces are corroded, and the service life is shortened are avoided, and the problem that due to the fact that damping of the rotary sealing pieces is too large, the sealing pieces are damaged is solved. And the power loss is relatively large.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a novel turntable sealing structure. Background Art

[0002] Rotary seals typically use a rotary seal mounted on a non-rotating component to seal axially or radially. This approach tests the reliability of the rotary seal and can easily accumulate small impurities in the local gaps of the rotary seal. Long-term exposure to corrosive fluids, such as cutting fluids, can corrode the seal, reducing its service life. Furthermore, when the structure is large, the damping of the rotary seal is excessive, resulting in significant power loss. Therefore, a new rotary table seal structure is proposed. Utility Model Content

[0003] Technical problems solved

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a novel turntable sealing structure.

[0005] Technical Solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel turntable sealing structure, comprising a box body as a supporting member of the whole machine, a sealing seat installed on one side of the box body, a protective cover installed on one side of the sealing seat, the protective cover is fixedly connected to the shaft core, a rotating seal is provided between the sealing seat and the shaft core, the rotating seal is installed on the sealing seat, a groove inner hole for installing the protective cover is provided on one side of the sealing seat, after the protective cover is installed in the groove inner hole, the single-side gap between the outer circle of the protective cover and the groove inner hole is ≤0.05mm, and the sealing seat is further provided with a groove and a drainage groove. The gap between the groove inner hole in the sealing seat and the outer circle of the protective cover of the utility model is guaranteed to be within 0.05mm on a single side, which can Prevent the entry of cutting objects, such as various metal or non-metal cutting objects, etc. Even if some cutting fluid enters through the gap, it will flow down in the groove and flow down and be discharged along the drainage groove designed on the sealing seat. When there is still a small amount of cutting fluid or extremely small particles breaking through the aforementioned mechanical labyrinth seal, there is still a rotating seal to protect and ensure sufficiently high sealing performance. This application integrates ordinary rotary seals with innovatively designed mechanical labyrinths, greatly improving product reliability, avoiding the accumulation of fine impurities and corrosive fluids in the local gap position of the rotating seal, which will cause corrosion to the seal and reduce its service life, and can also solve the problem of large power loss caused by excessive damping of the rotating seal.

[0007] Preferably, a motor stator is fixedly installed inside the box, and a rotatable motor rotor is provided inside the motor stator.

[0008] Preferably, a shaft core is fixedly installed inside the motor rotor, and the shaft core is fixed to the housing through a bearing outer ring.

[0009] Preferably, the bearing inner ring is integrally connected to the shaft core.

[0010] Preferably, an adapter plate is installed on one side of the shaft core.

[0011] Preferably, a precision encoder is provided on one side of the adapter plate.

[0012] Beneficial effects:

[0013] Compared with the existing technology, the new turntable sealing structure has the following beneficial effects:

[0014] The gap between the inner hole of the groove in the sealing seat of the utility model and the outer circle of the protective cover is guaranteed to be within 0.05mm on one side, which can prevent the entry of cutting objects, such as various metal or non-metallic cutting objects. Even if some cutting fluid enters through the gap, it will flow down in the groove and flow down and be discharged along the drainage groove designed on the sealing seat. When there is still a small amount of cutting fluid or extremely small particles breaking through the aforementioned mechanical labyrinth seal, there is still a rotating seal to protect and ensure sufficiently high sealing performance. This application integrates the ordinary rotary seal with the innovatively designed mechanical labyrinth, which greatly improves the product reliability and avoids the accumulation of fine impurities and corrosive fluids in the local gap position of the rotating seal, which will cause corrosion to the seal and reduce the service life. It can also solve the problem of large power loss caused by excessive damping of the rotating seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a schematic cross-sectional view of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at center A;

[0018] Figure 3 This is a side structural diagram of the sealing seat of the utility model.

[0019] In the picture:

[0020] 1. Adapter plate; 2. Motor stator; 3. Motor rotor; 4. Housing; 5. Seal seat; 6. Protective cover; 7. Rotating seal; 8. Bearing; 9. Shaft core; 10. Precision encoder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 3 As shown, the utility model provides a technical solution: a new turntable sealing structure, including a box body 4 as a support member of the whole machine, a sealing seat 5 is installed on one side of the box body 4, a protective cover 6 is installed on one side of the sealing seat 5, the protective cover 6 is fixedly connected to the shaft core 9, a rotating seal 7 is provided between the sealing seat 5 and the shaft core 9, the rotating seal 7 is installed on the sealing seat 5, a groove inner hole 501 for installing the protective cover 6 is opened on one side of the sealing seat 5, after the protective cover 6 is installed in the groove inner hole 501, the unilateral gap between the outer circle of the protective cover 6 and the groove inner hole 501 is ≤0.05mm, and a groove 502 and a drainage groove 5021 are further provided on the sealing seat 5. The gap between the groove inner hole 501 in the sealing seat 5 of the utility model and the outer circle of the protective cover 6 is guaranteed to be 0.05mm on a single side. Within, it can prevent the entry of cutting objects, such as various metal or non-metal cutting objects, etc. Even if some cutting fluid enters through the gap, it will flow down in the groove 502, flow down and be discharged along the drainage groove 5021 designed on the sealing seat 5. When there is still a small amount of cutting fluid or extremely small particles breaking through the aforementioned mechanical labyrinth seal, there is still a rotating seal to protect and ensure sufficiently high sealing performance. This application integrates ordinary rotary seals with innovatively designed mechanical labyrinths, greatly improving product reliability, avoiding the accumulation of fine impurities and corrosive fluids in the local gap position of the rotating seal, which will cause corrosion to the seal and reduce the service life, and can also solve the problem of large power loss caused by excessive damping of the rotating seal.

[0023] Please pay attention to Figure 1 The motor stator 2 is fixedly installed inside the box body 4, and a rotatable motor rotor 3 is arranged inside the motor stator 2. The shaft core 9 is fixedly installed inside the motor rotor 3. The shaft core 9 is fixed to the box body 4 through the outer ring of the bearing 8. The inner ring of the bearing 8 is connected to the shaft core 9 as a whole. An adapter plate 1 is installed on one side of the shaft core 9, and a precision encoder 10 is arranged on one side of the adapter plate 1.

[0024] Working principle: The gap between the inner hole 501 in the groove of the sealing seat 5 of the utility model and the outer circle of the protective cover 6 is guaranteed to be within 0.05mm on one side, which can prevent the entry of cutting objects, such as various metal or non-metal cutting objects. Even if some cutting fluid enters through the gap, it will flow down in the groove 502 and flow down and be discharged along the drainage groove 5021 designed on the sealing seat 5. When a small amount of cutting fluid or extremely small particles break through the aforementioned mechanical labyrinth seal, there is still a rotating seal to protect it, ensuring sufficiently high sealing performance.

[0025] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new turntable sealing structure, characterized by: The invention comprises a box body (4) serving as a supporting member of the whole machine, a sealing seat (5) being installed on one side of the box body (4), a protective cover (6) being installed on one side of the sealing seat (5), the protective cover (6) being fixedly connected to a shaft core (9), a rotating seal (7) being provided between the sealing seat (5) and the shaft core (9), and the rotating seal (7) being installed on the sealing seat (5); A groove inner hole (501) for mounting a protective cover (6) is provided on one side of the sealing seat (5); after the protective cover (6) is mounted in the groove inner hole (501), a single-side gap between the outer circle of the protective cover (6) and the groove inner hole (501) is ≤0.05 mm, and a groove (502) and a drainage groove (5021) are also provided on the sealing seat (5).

2. A novel turntable sealing structure according to claim 1, characterized in that: A motor stator (2) is fixedly mounted inside the box (4), and a rotatable motor rotor (3) is provided inside the motor stator (2).

3. A novel turntable sealing structure according to claim 2, characterized in that: A shaft core (9) is fixedly installed inside the motor rotor (3), and the shaft core (9) is fixed to the box body (4) through the outer ring of the bearing (8).

4. A novel turntable sealing structure according to claim 3, characterized in that: The inner ring of the bearing (8) is integrally connected to the shaft core (9).

5. The novel turntable sealing structure according to claim 1 is characterized in that: An adapter plate (1) is installed on one side of the shaft core (9).

6. The novel turntable sealing structure according to claim 1 is characterized in that: A precision encoder (10) is provided on one side of the adapter plate (1).

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