Electric spindle sealing structure
By designing an electric spindle sealing structure using an inner shell, an outer shell and a multi-layer sealing ring, the electric spindle is easily susceptible to intrusion of dust and water vapor and excessive temperature in complex environments, and the sealing and heat dissipation effect are improved.
Patent Information
- Application Number
- CN202422328885.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-24
AI Technical Summary
Electric spindles are susceptible to dust and water vapor in complex environments, and are inconvenient to repair and replace, resulting in reduced processing performance and excessive temperature.
An electric spindle sealing structure is designed, adopting a combined structure of the inner shell and the outer shell. Through the cooperation of the first sealing ring, the second sealing ring and the third sealing ring, the magnetic suction ring and the heat dissipation fins are used to achieve sealing and heat dissipation.
Effectively prevent dust and water vapor from entering, ensure the sealing and processing performance of the electric spindle, and at the same time, it achieves rapid heat dissipation through thermal conductivity rings and heat dissipation fins to avoid excessive temperatures.
Smart Images
Figure CN223019396U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric spindle seals, and specifically relates to an electric spindle seal structure. Background Technique
[0002] The electric spindle is the latest processing equipment in the field of numerical control machine tools. The electric spindle replaces the traditional processing method of separating the motor and the spindle. It combines the spindle and the motor into one, and directly drives the spindle to rotate through the rotation of the motor. This method eliminates the intermediate transmission link and makes the processing efficiency of the electric spindle higher.
[0003] However, due to the complex environment in which the electric spindle is located during processing, and only a relatively simple installation and connection of the electric spindle, there is a lot of dust and water vapor in the surrounding environment, and the electric spindle is not effectively sealed, so it will enter the spindle through the gaps of the spindle. At the same time, it is not convenient to disassemble when the spindle needs to be repaired or replaced. Therefore, the long-term harsh working environment will affect the processing performance of the spindle and cause inconvenience to the users; moreover, it is not possible to dissipate heat and cool down the spindle during use, so the temperature will be too high after the spindle is used for a long time. For this reason, we propose an electric spindle seal structure. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] In view of the deficiencies of the prior art, the utility model provides an electric spindle seal structure to solve the above problems.
[0006] (2) Technical Solutions
[0007] To achieve the above object, the utility model provides the following technical solution: An electric spindle seal structure includes an inner shell. Installation grooves are provided around the inner wall of the inner shell. A first sealing ring is arranged in the middle of the inner cavity of the inner shell. A connecting ring is arranged in the inner cavity of the inner shell. Installation blocks are fixedly installed around the outer circumference of the connecting ring. A spindle is rotatably installed in the inner cavity of the connecting ring through a bearing. An outer shell is arranged outside the inner shell. Slots are provided at the top and bottom of the outer shell. A heat conduction ring is arranged outside the outer shell. Plug blocks are fixedly installed at the top and bottom of the inner cavity of the heat conduction ring. Two first threaded grooves are equidistantly arranged on the left side of the outer shell. Second threaded grooves are provided on the left side of each plug block. One first threaded groove and one second threaded groove form a group, and a total of two groups are provided. A plurality of heat dissipation fins are equidistantly arranged outside the heat conduction ring.
[0008] Preferably, first magnetic attraction rings are fixedly installed around the left side of the first sealing ring. The connecting ring is slidably installed in the inner cavity of the inner shell through the installation blocks in the installation grooves.
[0009] Preferably, a second sealing ring is arranged in the middle of the outer ring of the connecting ring. Circular grooves are formed around the right side of the second sealing ring, and second magnetic attraction rings are arranged in the inner cavities of the circular grooves.
[0010] Preferably, the inner shell and the outer shell are both made of steel.
[0011] Preferably, a third sealing ring is sleeved on the left side of the connecting ring, and the connecting ring is made of rubber.
[0012] Preferably, the heat conducting ring is slidably installed on the outer ring of the outer shell through insertion blocks in the slots, and positioning screws are threadedly connected in the inner cavities of each group of first threaded grooves and second threaded grooves.
[0013] Preferably, the heat conducting ring is made of copper, and a plurality of heat dissipation grooves are equidistantly formed on the front surface of the heat dissipation fins.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides an electric spindle sealing structure, which has the following beneficial effects:
[0016] 1. For this electric spindle sealing structure, the connecting ring slides inward to the first sealing ring in the inner cavity of the inner shell through the mounting block, so that the four first magnetic attraction rings enter the four circular grooves. After entering, the four first magnetic attraction rings are magnetically attracted and fixed to the four second magnetic attraction rings in the inner cavities of the four circular grooves. After being fixed, the first magnetic attraction ring is closely attached to the second sealing ring, and the central shaft is sealed by being attached to the inner shell through the connecting ring. At the same time, the third sealing ring can also seal the connection between the connecting ring and the inner shell, thereby preventing dust and water vapor from entering through the large gaps between the central shafts, causing unnecessary damage and inconvenience to the processing performance. At the same time, by operating in the opposite way, the central shaft can be disassembled and taken out for convenient replacement and maintenance.
[0017] 2. For this electric spindle sealing structure, since the heat conducting ring is made of copper, it can quickly conduct the heat generated when the central shaft is in use. After being conducted out, it is dissipated by a plurality of heat dissipation fins. During the heat dissipation, the plurality of heat dissipation grooves can further dissipate the heat of the heat dissipation fins in contact with the air. Moreover, by rotating the two positioning screws counterclockwise in the two groups of corresponding first threaded grooves and second threaded grooves to take them out, the fixing of the insertion blocks in the slots can be released, and then the heat conducting ring can be slid outwards through the insertion blocks in the slots and disassembled from the outer ring of the outer shell. Thus, it can not only dissipate heat from the central shaft to prevent damage caused by excessive temperature, but also facilitate the user to disassemble and replace the heat conducting ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the inner shell structure of the present utility model;
[0020] Figure 3 This is a schematic diagram of the connecting ring structure of the present utility model;
[0021] Figure 4 This is a schematic diagram of the outer shell structure of the present utility model;
[0022] Figure 5 This is a schematic diagram of the heat conduction ring structure of the present utility model.
[0023] In the figure: 1, inner shell; 2, installation groove; 3, first sealing ring; 4, first magnetic attraction ring; 5, connecting ring; 6, installation block; 7, second sealing ring; 8, circular groove; 9, second magnetic attraction ring; 10, main shaft; 11, third sealing ring; 12, outer shell; 13, slot; 14, heat conduction ring; 15, insertion block; 16, first thread groove; 17, second thread groove; 18, positioning screw; 19, heat dissipation fin; 20, heat dissipation groove. Specific embodiments
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Please refer to Figures 1-5 , an electric spindle sealing structure, including an inner shell 1. Installation grooves 2 are provided on the peripheries of the inner wall of the inner shell 1. A first sealing ring 3 is arranged in the middle of the inner cavity of the inner shell 1. A connecting ring 5 is arranged in the inner cavity of the inner shell 1. Installation blocks 6 are fixedly installed on the peripheries of the outer ring of the connecting ring 5. The main shaft 10 is rotatably installed in the inner cavity of the connecting ring 5 through a bearing. The outer ring of the inner shell 1 is provided with an outer shell 12. Slots 13 are provided at the top and bottom of the outer shell 12. A heat conduction ring 14 is arranged on the outer ring of the outer shell 12. Insertion blocks 15 are fixedly installed at the top and bottom of the inner cavity of the heat conduction ring 14. Two first thread grooves 16 are equidistantly provided on the left side of the outer shell 12. Second thread grooves 17 are provided on the left sides of the insertion blocks 15. One first thread groove 16 and one second thread groove 17 form a group and a total of two groups are provided. A plurality of heat dissipation fins 19 are equidistantly arranged on the outer ring of the heat conduction ring 14.
[0026] Furthermore, first magnetic attraction rings 4 are fixedly installed on the peripheries of the left side of the first sealing ring 3. The connecting ring 5 is slidably installed in the inner cavity of the inner shell 1 through the installation blocks 6 in the installation grooves 2.
[0027] Furthermore, a second sealing ring 7 is provided in the middle of the outer ring of the connecting ring 5 , and circular grooves 8 are provided around the right side of the second sealing ring 7 , and a second magnetic ring 9 is provided in the inner cavity of the circular groove 8 .
[0028] Furthermore, a third sealing ring 11 is sleeved on the left side of the connecting ring 5. The connecting ring 5 is made of rubber material. Advantages: by sliding the connecting ring 5 through the mounting block 6 in the mounting groove 2 toward the first sealing ring 3 in the inner cavity of the inner shell 1, the four first magnetic rings 4 enter the four circular grooves 8. After entering, the four first magnetic rings 4 are magnetically fixed to each other with the four second magnetic rings 9 in the inner cavity of the four circular grooves 8. After fixing, the first magnetic ring 4 and the second sealing ring 7 are tightly fitted, and the center shaft 10 is sealed by fitting with the inner shell 1 through the connecting ring 5. At the same time, the third sealing ring 11 can also seal the connection between the connecting ring 5 and the inner shell 1, thereby preventing the gap between the center shaft 10 from being too large, causing dust and water vapor to enter, causing unnecessary damage and inconvenience in processing performance, and at the same time, the center shaft 10 can be disassembled and removed by the reverse operation for easy replacement and maintenance.
[0029] Furthermore, the inner shell 1 and the outer shell 12 are both made of steel, which has the advantage that steel has the advantage of being relatively hard, so setting the inner shell 1 and the outer shell 12 to steel can prevent breakage due to long-term use, thereby protecting the central axis 10.
[0030] Furthermore, the heat-conducting ring 14 is slidably installed on the outer ring of the housing 12 in the slot 13 through the insert block 15 , and the inner cavity of each set of the first thread groove 16 and the second thread groove 17 is threadedly connected with a positioning screw 18 .
[0031] Furthermore, the heat conducting ring 14 is made of copper, and a plurality of heat dissipation grooves 20 are evenly spaced on the front of the heat dissipation fins 19, which has the advantages that the heat conducting ring 14 is made of copper, so that the heat generated by the central shaft 10 during use can be quickly discharged, and the heat is dissipated through the plurality of heat dissipation fins 19 after discharge, and the plurality of heat dissipation grooves 20 can again contact the heat dissipation fins 19 with the air for heat dissipation during heat dissipation, and the two positioning screws 18 are rotated counterclockwise in the two sets of corresponding first thread grooves 16 and second thread grooves 17 to be removed, so that the fixation of the plug block 15 in the slot 13 can be released, and then the heat conducting ring 14 is disassembled from the outer ring of the shell 12 by the synchronous sliding of the plug block 15 outward in the slot 13, thereby not only dissipating the heat and cooling down the central shaft 10 to prevent damage caused by excessive temperature, but also facilitating the user to disassemble and replace the heat conducting ring 14.
[0032] Working principle: When in use, first slide the connecting ring 5 through the mounting block 6 into the inner cavity of the inner shell 1 towards the first sealing ring 3 in the mounting groove 2, so that the four first magnetic attraction rings 4 enter into the four circular grooves 8. After entering, make the four first magnetic attraction rings 4 magnetically attract and fix with the four second magnetic attraction rings 9 in the inner cavities of the four circular grooves 8. After fixing, closely fit the first magnetic attraction ring 4 with the second sealing ring 7, and fit the central shaft 10 with the inner shell 1 through the connecting ring 5 for sealing. At the same time, the third sealing ring 11 can also seal the connection between the connecting ring 5 and the inner shell 1, so as to prevent dust and water vapor from entering through the excessive gap between the central shafts 10, causing unnecessary damage and inconvenience to the processing performance. At the same time, by performing the opposite operation, the central shaft 10 can be disassembled and taken out for convenient replacement and repair. At the same time, when the central shaft 10 is in use, the heat conduction ring 14 is made of copper material, which can quickly conduct the heat generated when the central shaft 10 is in use. After conduction, it is dissipated by a plurality of heat dissipation fins 19. During the heat dissipation, a plurality of heat dissipation grooves 20 can dissipate heat from the heat dissipation fins 19 in contact with the air again. And, by rotating the two positioning screws 18 counterclockwise in the two groups of corresponding first thread grooves 16 and second thread grooves 17 and taking them out, the fixation of the insertion block 15 in the insertion slot 13 can be released. Subsequently, the heat conduction ring 14 is slid outwards through the insertion block 15 in the insertion slot 13 and disassembled from the outer ring of the outer shell 12, so that while being able to dissipate heat and cool the central shaft 10 to prevent damage caused by excessive temperature, it can also facilitate the operator to disassemble and replace the heat conduction ring 14.
[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An electric spindle sealing structure, comprising an inner shell (1), characterized in that: The inner wall of the inner shell (1) is provided with mounting grooves (2) all around, a first sealing ring (3) is provided in the middle of the inner cavity of the inner shell (1), a connecting ring (5) is provided in the inner cavity of the inner shell (1), mounting blocks (6) are fixedly installed around the outer ring of the connecting ring (5), a main shaft (10) is rotatably installed in the inner cavity of the connecting ring (5) through a bearing, an outer shell (12) is provided on the outer ring of the inner shell (1), slots (13) are provided on the top and bottom of the outer shell (12), and the inner shell (12) is provided with a plurality of mounting holes (13) on the inner cavity of the inner shell (1). The outer ring of the shell (12) is provided with a heat-conducting ring (14), and the top and bottom of the inner cavity of the heat-conducting ring (14) are fixedly installed with plug blocks (15). Two first thread grooves (16) are equidistantly provided on the left side of the shell (12), and a second thread groove (17) is provided on the left side of the plug blocks (15). One first thread groove (16) and one second thread groove (17) form a group, and two groups are provided in total. The outer ring of the heat-conducting ring (14) is provided with a plurality of heat-dissipating fins (19) equidistantly provided.
2. The electric spindle sealing structure according to claim 1, characterized in that: First magnetic rings (4) are fixedly mounted around the left side of the first sealing ring (3), and the connecting ring (5) is slidably mounted in the inner cavity of the inner shell (1) through a mounting block (6) in the mounting groove (2).
3. The electric spindle sealing structure according to claim 1, characterized in that: A second sealing ring (7) is arranged in the middle of the outer ring of the connecting ring (5), circular grooves (8) are arranged around the right side of the second sealing ring (7), and a second magnetic attraction ring (9) is arranged in the inner cavity of the circular groove (8).
4. The electric spindle sealing structure according to claim 1, characterized in that: The inner shell (1) and the outer shell (12) are both made of steel.
5. The electric spindle sealing structure according to claim 1, characterized in that: A third sealing ring (11) is sleeved on the left side of the connecting ring (5), and the connecting ring (5) is made of rubber material.
6. The electric spindle sealing structure according to claim 1, characterized in that: The heat-conducting ring (14) is slidably mounted on the outer ring of the housing (12) in the slot (13) via an insert block (15), and the inner cavity of each set of the first thread groove (16) and the second thread groove (17) is threadedly connected with a positioning screw (18).
7. The electric spindle sealing structure according to claim 1, characterized in that: The heat-conducting ring (14) is made of copper, and a plurality of heat-dissipating grooves (20) are evenly spaced on the front of the heat-dissipating fins (19).