Waterproof electric spindle
By designing a rolling ball in the waterproof electric spindle to drive the sealing ring to move, the sealing and waterproof effect is achieved during use, and the sealing components are reduced when stationary, which solves the problem of high strength and fast wear of the existing waterproof electric spindle, and extends the service life.
Patent Information
- Application Number
- CN202422111679.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-29
AI Technical Summary
The existing waterproof electric spindle cannot accommodate waterproof parts when it is left to stand, resulting in excessive use strength and rapid wear, affecting the stability of long-term use.
A waterproof electric spindle is designed, which drives the upper sealing ring to move through the movement of the rolling ball, so that the upper sealing ring is pressed into contact with the support ring groove, the bottom sealing ring and the bottom limiting groove, so as to achieve the sealing effect between the connecting head and the support shaft. When the device stops rotating, the rolling ball is reset and unsealed, reducing the use time of the sealing component.
It realizes the stable sealing and waterproof effect during use, and reduces the service time of sealing components when stationary, extends the service life and avoids ineffective sealing support.
Smart Images
Figure CN222999678U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of electric spindles, and particularly relates to a waterproof electric spindle. Background Art
[0002] An electric spindle integrates a machine tool spindle and a spindle motor, making the spindle motor and the machine tool spindle "one".
[0003] During the processing of the electric spindle, heat will be generated. Therefore, during its actual use, it is necessary to sprinkle water for cooling to ensure its safety during operation. However, the water splashes generated during sprinkling will enter the device, causing component loss and affecting its service life. The existing waterproof methods generally use continuously and fixedly, and the waterproof components cannot be stored and moved when the device is stationary, resulting in excessive use intensity and rapid wear, affecting the stability during long-term use. Therefore, a waterproof electric spindle is urgently needed. Summary of the Invention
[0004] The utility model aims at the problems in the prior art and proposes the following technical solutions:
[0005] A waterproof electric spindle includes a support shaft, a connector installed at one end of the support shaft. A support ring groove is provided inside the support shaft on one side of the connector. A bottom limiting groove is provided on the inner wall of the support ring groove close to the connector side, and the bottom limiting groove communicates with the support ring groove. A rolling groove is opened on the inner wall of the support ring groove on the same side as the bottom limiting groove, and there are several rolling grooves.
[0006] A middle limiting ring is arranged on the outer side of the connector. The connector is inserted into the middle limiting ring. An upper sealing ring is installed at the upper end of the middle limiting ring. An upper sealing ring is installed on the surface of the upper sealing ring away from the middle limiting ring. An outer sealing ring is installed on the inner wall of the upper sealing ring. A bottom sealing ring is installed on the surface of the other end of the middle limiting ring. Bottom sealing rings are installed on both the inner and outer sides of the middle limiting ring, and the bottom sealing rings are fixedly connected to the bottom sealing ring at the same time.
[0007] Rolling balls are arranged inside the rolling grooves in a rolling manner. The bottom sealing ring is rotatably installed inside the bottom limiting groove. The upper sealing ring is rotatably installed on the inner wall of the support ring groove. A limiting guide rail is provided on the outer side of the lower end of the upper sealing ring, and the rolling balls are simultaneously in rolling connection with the limiting guide rail and the inner wall of the support ring groove.
[0008] The movement of the rolling balls drives the upper sealing ring to move, so that the upper sealing ring is in extrusion contact with the support ring groove, the bottom sealing ring is in extrusion contact with the bottom limiting groove, and under the simultaneous close contact of the outer sealing ring and the bottom sealing ring, the sealing effect between the connector and the support shaft is achieved.
[0009] Preferably, as the above technical solution, the middle limiting ring is rotatably arranged inside the bottom limiting groove, and the middle limiting ring extends into the support ring groove.
[0010] Under the simultaneous limiting support of the support ring groove and the bottom limiting groove, the accuracy of the moving direction of the middle limiting ring is further ensured.
[0011] Preferably, as the above technical solution, there are at least two outer sealing rings, and the two outer sealing rings are located on the same side of the upper sealing ring, and the outer sealing rings are in contact with the outside of the connector.
[0012] Under the support of the two outer sealing rings, the stability of the sealing of the outside of the connector is ensured.
[0013] Preferably, as the above technical solution, the upper sealing ring is in contact with the upper side of the inner wall of the support ring groove, and the two bottom sealing rings are simultaneously in contact with the upper side of the inner wall of the bottom limiting groove.
[0014] Through the simultaneous sealing effect of the upper sealing ring and the bottom sealing ring, the sealing and waterproof effect of the device is improved from multiple angles.
[0015] Preferably, as the above technical solution, there is a height difference at both ends of the inner wall of the rolling groove, and the moving direction of the rolling ball is opposite to the rotating direction of the support shaft.
[0016] Under the support of the rolling groove, it is ensured that the rotation of the device can drive the rolling ball to perform stable height adjustment.
[0017] Preferably, as the above technical solution, a fastening support groove is provided at the upper end of the support shaft, a fastening bolt is arranged inside the fastening support groove, a sealing auxiliary ring is clamped in the fastening support groove, and the sealing auxiliary ring is used for sealing the fastening support groove.
[0018] By clamping and placing the sealing auxiliary ring in the fastening support groove, the sealing stability at the fastening part of the connecting bolt inside the fastening support groove is ensured.
[0019] The beneficial effects of the present utility model are as follows:
[0020] (1) The movement of the rolling ball drives the upper sealing ring to move, so that the upper sealing ring is in extrusion contact with the support ring groove, the bottom sealing ring is in extrusion contact with the bottom limiting groove, and under the simultaneous close contact of the outer sealing ring and the bottom sealing ring, the sealing effect between the connector and the support shaft is achieved;
[0021] (2) By rotating the support shaft, the rolling ball is driven to move from the lower part to the higher part inside the rolling groove, so that the position of the rolling ball gradually rises, thereby driving the upper sealing ring to move upward. At the same time, under the sealing contact between the two outer sealing rings and the outer side of the connector, the upper end sealing ring and the inner wall of the support ring groove, and the bottom sealing ring and the inner wall of the bottom limit groove, the stability of the device during sealing and waterproofing is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 FIG. shows the front view of the whole device;
[0023] Figure 2 FIG. shows the perspective view of the upper half of the device;
[0024] Figure 3 FIG. shows the side view of the sealing structure;
[0025] Figure 4 FIG. shows the side view of the whole device;
[0026] Figure 5 FIG. shows Figure 2 the enlarged view of part A in
[0027] In the figure: 1, support shaft; 2, connector; 3, upper sealing ring; 4, middle limit ring; 5, outer sealing ring; 6, limit guide rail; 7, bottom sealing ring; 8, bottom sealing ring; 9, upper end sealing ring; 10, support ring groove; 11, rolling groove; 12, rolling ball; 13, bottom limit groove; 14, fastening support groove; 15, sealing auxiliary ring. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments.
[0029] Embodiment
[0030] Figures 1 - 4 FIG. shows the overall structural schematic diagram of a specific embodiment of the present utility model. Figures 1 - 4 In, a waterproof electric spindle includes a support shaft 1, a connector 2 installed at one end of the support shaft 1. A support ring groove 10 is opened inside the support shaft 1 on one side of the connector 2. A bottom limit groove 13 is opened on the inner wall of the support ring groove 10 close to the connector 2. The bottom limit groove 13 communicates with the support ring groove 10. A plurality of rolling grooves 11 are opened on the inner wall of the support ring groove 10 on the same side as the bottom limit groove 13.
[0031] A middle limiting ring 4 is arranged outside the connector 2. The connector 2 is inserted into the middle limiting ring 4. An upper sealing ring 3 is installed at the upper end of the middle limiting ring 4. An upper sealing ring 9 is installed on the surface of one end of the upper sealing ring 3 away from the middle limiting ring 4. An outer sealing ring 5 is installed on the inner wall of the upper sealing ring 3. A bottom sealing ring 7 is installed on the surface of the other end of the middle limiting ring 4. Bottom sealing rings 8 are installed on both the inner and outer sides of the middle limiting ring 4. The bottom sealing rings 8 are fixedly connected to the bottom sealing ring 7 at the same time.
[0032] Rolling balls 12 are arranged to roll inside the rolling grooves 11. The bottom sealing ring 7 is rotatably installed inside the bottom limiting groove 13. The upper sealing ring 3 is rotatably installed on the inner wall of the support ring groove 10. A limiting guide rail 6 is opened on the outer side of the lower end of the upper sealing ring 3. The rolling balls 12 are in rolling connection with both the limiting guide rail 6 and the inner wall of the support ring groove 10 at the same time.
[0033] When the device is operating, the rolling balls 12 roll inside the rolling grooves 11. Under the limiting connection of the limiting guide rail 6, the rolling balls 12 drive the upper sealing ring 3 to move upward. When the upper sealing ring 3 moves upward inside the support ring groove 10, it drives the middle limiting ring 4 and the bottom sealing ring 7 to move upward inside the bottom limiting groove 13 at the same time, so that the upper sealing ring 9 is in pressing contact with the support ring groove 10, the bottom sealing rings 8 are in pressing contact with the bottom limiting groove 13, and under the condition that the outer sealing ring 5 and the bottom sealing rings 8 are in close contact at the same time, the sealing effect between the connector 2 and the support shaft 1 is achieved, so that a stable sealing and waterproof effect can be provided for the device during use. And when the device stops rotating, the rolling balls 12 will move back to their original positions, and at the same time, the limiting effect on the upper sealing ring 3 is released, so that the upper sealing ring 9 and the bottom sealing rings 8 are released from the sealed state, thereby reducing the service time of the sealing components, effectively preventing the sealing components from providing ineffective sealing support, and improving their service life.
[0034] Figure 1 and Figure 2 The figure shows a three-dimensional structural schematic diagram of a specific embodiment of the present invention. Figure 1 and Figure 2 In the figure, the middle limiting ring 4 is rotatably arranged inside the bottom limiting groove 13, and the middle limiting ring 4 extends into the support ring groove 10.
[0035] Under the simultaneous limiting support of the support ring groove 10 and the bottom limiting groove 13, the accuracy of the moving direction of the middle limiting ring 4 is further ensured.
[0036] Figures 1 - 3 The figure shows a structural schematic diagram of the sealing method of a specific embodiment of the present invention. Figures 1 - 3 In the figure, there are at least two outer sealing rings 5, and the two outer sealing rings 5 are located on the same side of the upper sealing ring 3. The outer sealing rings 5 are in contact with the outer side of the connector 2.
[0037] The upper sealing ring 9 contacts the upper side of the inner wall of the support ring groove 10, and the two bottom sealing rings 8 simultaneously contact the upper side of the inner wall of the bottom limiting groove 13.
[0038] Both ends of the inner wall of the rolling groove 11 have a height difference, and the moving direction of the rolling ball 12 is opposite to the rotating direction of the support shaft 1.
[0039] Through the rotation of the support shaft 1, the rolling ball 12 is driven to move from the lower part to the upper part inside the rolling groove 11, so that the position of the rolling ball 12 gradually rises, thereby driving the upper sealing ring 3 to move upward. At the same time, under the sealing contact between the two outer sealing rings 5 and the outer side of the connector 2, the upper sealing ring 9 and the inner wall of the support ring groove 10, and the bottom sealing ring 8 and the inner wall of the bottom limiting groove 13, the stability of the device during sealing and waterproofing is further improved. And with the support of the height difference of the rolling groove 11, the accuracy and efficiency of the rolling ball 12 during reset movement are ensured.
[0040] Figure 1 Shown is a schematic structural diagram of the outer sealing method as a specific embodiment of the present utility model. Figure 1 In it, a fastening support groove 14 is provided at the upper end of the support shaft 1. A fastening bolt is arranged inside the fastening support groove 14, and a sealing auxiliary ring 15 is clamped in the fastening support groove 14. The sealing auxiliary ring 15 is used for the sealing of the fastening support groove 14.
[0041] By clamping and placing the sealing auxiliary ring 15 in the fastening support groove 14, and with the assistance of the lower sealing ring of the sealing auxiliary ring 15, the sealing stability of the fastening part of the connecting bolt inside the fastening support groove 14 is ensured, thereby further improving the comprehensiveness of the device sealing.
[0042] Working principle: When the device rotates and operates, the rolling ball 12 rolls inside the rolling groove 11. Under the limiting connection of the limiting guide rail 6, the rolling ball 12 drives the upper sealing ring 3 to move upward. When the upper sealing ring 3 moves upward inside the support ring groove 10, it drives the middle limiting ring 4 and the bottom sealing ring 7 to move upward inside the bottom limiting groove 13 at the same time, so that the two outer sealing rings 5 are in sealing contact with the outer side of the connector 2, the upper sealing ring 9 is in sealing contact with the inner wall of the support ring groove 10, and the bottom sealing ring 8 is in sealing contact with the inner wall of the bottom limiting groove 13. And when the two outer sealing rings 5 and the bottom sealing ring 8 are in close contact at the same time, the sealing effect between the connector 2 and the support shaft 1 is achieved. And when the device stops rotating, under the support of the height difference inside the rolling groove 11, affected by gravity, the rolling ball 12 will perform a reset movement, and at the same time, the limiting effect on the upper sealing ring 3 is released, so that the upper sealing ring 9 and the bottom sealing ring 8 are released from the sealing state, thereby reducing the use time of the sealing components, effectively preventing the sealing components from performing ineffective sealing support, and being able to improve its service life.
[0043] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it.
Claims
1. A waterproof electric spindle, comprising a support shaft (1), a connector (2) mounted on one end of the support shaft (1), characterized in that: The support shaft (1) is provided with a support ring groove (10) on one side of the connecting head (2); a bottom limit groove (13) is provided on the inner wall of the support ring groove (10) close to the connecting head (2); the bottom limit groove (13) is communicated with the support ring groove (10); a rolling groove (11) is provided on the inner wall of the support ring groove (10) on the same side as the bottom limit groove (13); and there are a plurality of rolling grooves (11); A middle limiting ring (4) is arranged on the outer side of the connector (2), the connector (2) is plugged into the middle limiting ring (4), an upper sealing ring (3) is installed on the upper end of the middle limiting ring (4), an upper sealing ring (9) is installed on the surface of one end of the upper sealing ring (3) away from the middle limiting ring (4), an outer sealing ring (5) is installed on the inner wall of the upper sealing ring (3), a bottom sealing ring (7) is installed on the other end surface of the middle limiting ring (4), bottom sealing rings (8) are installed on both the inner and outer sides of the middle limiting ring (4), and the bottom sealing ring (8) is fixedly connected to the bottom sealing ring (7) at the same time; A rolling ball (12) is arranged to roll inside the rolling groove (11); the bottom sealing ring (7) is rotatably mounted inside the bottom limiting groove (13); the upper sealing ring (3) is rotatably mounted on the inner wall of the supporting ring groove (10); a limiting guide rail (6) is provided on the outer side of the lower end of the upper sealing ring (3); and the rolling ball (12) is simultaneously connected to the limiting guide rail (6) and the inner wall of the supporting ring groove (10) by rolling.
2. A waterproof electric spindle according to claim 1, characterized in that: The middle limiting ring (4) is rotatably disposed inside the bottom limiting groove (13), and the middle limiting ring (4) extends to the inside of the supporting ring groove (10).
3. The waterproof electric spindle according to claim 1, characterized in that: There are at least two outer sealing rings (5), and the two outer sealing rings (5) are located on the same side of the upper sealing ring (3), and the outer sealing rings (5) are in contact with the outer side of the connector (2).
4. The waterproof electric spindle according to claim 1, characterized in that: The upper sealing ring (9) contacts the upper side of the inner wall of the supporting ring groove (10), and the two bottom sealing rings (8) contact the upper side of the inner wall of the bottom limiting groove (13) at the same time.
5. The waterproof electric spindle according to claim 1, characterized in that: The two ends of the inner wall of the rolling groove (11) have a height difference, and the moving direction of the rolling ball (12) is opposite to the rotating direction of the support shaft (1).
6. The waterproof electric spindle according to claim 1, characterized in that: The upper end of the support shaft (1) is provided with a fastening support groove (14), a fastening bolt is arranged inside the fastening support groove (14), and a sealing auxiliary ring (15) is clamped in the fastening support groove (14), and the sealing auxiliary ring (15) is used for sealing the fastening support groove (14).