Hydraulic indexing chuck oil separator
By incorporating support components and sealing structures into the hydraulic indexing chuck distributor, the problem of internal leakage caused by seal retraction is solved, enhancing sealing performance and interface stability, and achieving the effect of preventing internal leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINNING INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-07
AI Technical Summary
Existing hydraulic indexing chuck distributors are prone to internal leakage due to the seals retracting and deforming under high pressure, lacking internal support to prevent retraction.
A hydraulic indexing chuck distributor designed to prevent internal leakage enhances the sealing performance of the sealing ring by setting a support component inside the sealing ring, including a side groove, a first abutment ring, a second abutment ring, and a support spring. An O-ring and an annular positioning rubber ring are also set at the interface to increase the stability and sealing performance of the flange connection.
It achieves enhanced sealing under high pressure, prevents internal leakage, and improves the sealing performance and stability of interfaces and flange connections.
Smart Images
Figure CN224463736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil distributor technology, specifically a hydraulic indexing chuck oil distributor that prevents internal leakage. Background Technology
[0002] Hydraulic indexing chucks are a common machine tool accessory, suitable for processing typical irregularly shaped parts in industries such as valves and auto parts. They have both clamping and indexing functions. Since hydraulic indexing chucks need to rotate at high speed during operation, they are usually equipped with rotary oil distributors.
[0003] Most hydraulic indexing chuck distributors on the market today are similar in overall structure, typically rotary distributors, consisting of an inner core and an outer cylinder. The inner core has four sets of oil passages for oil inlet and outlet. Hydraulic oil is injected into the inner cylinder from the outside and enters the oil passages through the oil inlets. The outlet oil returns via the opposite path. In actual use, there are some functional deficiencies and room for improvement. For example, the annular oil passages are usually isolated by seals or gaskets. Under high oil pressure, the seals are easily compressed and deformed, allowing oil to flow out and causing internal leakage. They do not have an internal support function to prevent retraction.
[0004] Now, a novel hydraulic indexing chuck distributor that prevents internal leakage is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a hydraulic indexing chuck distributor that prevents internal leakage, thereby solving the problem mentioned in the background art of not having an internal support anti-retraction function.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic indexing chuck oil distributor for preventing internal leakage, comprising an outer shell, the inner side of which is provided with four sets of annular oil grooves, and annular sealing grooves on both sides of the annular oil grooves. The bottom end of the outer shell is provided with two sets of oil outlet ports, and the top end of the outer shell is provided with two sets of oil inlet ports. A rotating shaft is laterally movably connected inside the outer shell. Five sets of sealing rings are fixedly connected to the outside of the rotating shaft. A first annular sealing ring covers the outside of each sealing ring. The rotating shaft has four sets of oil passages inside. Oil outlets are respectively provided at the upper and lower ends of the right side of the rotating shaft, and oil return ports are respectively provided at the front and rear ends of the right side of the rotating shaft. A docking flange is fixedly connected to the right side of the outside of the rotating shaft. A support assembly for reinforcing sealing and preventing internal leakage is provided inside the sealing rings.
[0007] The support assembly includes two sets of side grooves, which are respectively opened on the left and right sides of the sealing ring. The sealing ring has six sets of spring through grooves inside. A first abutment ring is provided on the left side of the side groove, and a second abutment ring is provided on the right side of the sealing ring. A support spring is provided between the first abutment ring and the second abutment ring.
[0008] As a further technical solution of this utility model, the external shape and size of the first abutment ring and the second abutment ring are adapted to the internal shape and size of the side groove, and the shape and size of the first abutment ring and the second abutment ring are the same.
[0009] As a further technical solution of this utility model, the outer diameter of the support spring is the same as the inner diameter of the spring through groove, and the two sides of the support spring are respectively welded to the first abutment ring and the second abutment ring.
[0010] As a further technical solution of this utility model, the outer surfaces of the first abutment ring and the second abutment ring are respectively attached to the inner wall of the first annular sealing ring, and the first annular sealing ring, the first abutment ring, and the second abutment ring are not connected.
[0011] As a further technical solution of this utility model, O-rings are glued to the inside of the oil outlet and oil inlet ports, and two sets of fixing rings are fixedly connected to the upper and lower ends of the outer shell, with interface sealing rings glued to the inner wall of the fixing rings.
[0012] As a further technical solution of this utility model, the fixing ring is aligned with the vertical center line of the oil outlet and oil inlet at the corresponding positions, and the interface sealing ring is elastic.
[0013] As a further technical solution of this utility model, an annular pre-grooved groove is provided on the right side of the mating flange, an annular positioning rubber ring is glued inside the annular pre-grooved groove, a second annular sealing ring is glued to the right side of the annular positioning rubber ring, and multiple sets of pre-grooved screw holes are provided inside the annular positioning rubber ring and the second annular sealing ring.
[0014] As a further technical solution of this utility model, the outer diameters of the docking flange and the second annular sealing ring are the same, the left side of the second annular sealing ring and the right side of the docking flange are bonded together, and the positions of the pre-drilled screw holes and the screw holes on the docking flange correspond one-to-one.
[0015] Compared with the prior art, the beneficial effects of this utility model are: the hydraulic indexing chuck oil distributor that prevents internal leakage not only realizes the function of internal support and anti-retraction, but also realizes the function of strengthening the sealing at the interface and the function of strengthening the sealing at the flange.
[0016] (1) By setting a side groove, a first abutment ring, a spring through groove, a support spring and a second abutment ring, when in use, hydraulic oil is injected from the oil inlet port, the oil spreads along the corresponding annular oil groove and enters the internal oil circuit through the oil port, and is discharged from the oil outlet port. The return oil enters from the return oil port, flows back to the annular oil groove through the oil port, and is discharged from the oil outlet port. The annular oil groove is sealed by a sealing structure consisting of an annular sealing groove, a sealing ring and a first annular sealing ring. The outer wall of the first annular sealing ring is attached to the inner wall of the annular sealing groove. The first abutment ring and the second abutment ring in the side groove are pushed outward by the support spring between them. The first abutment ring and the second abutment ring expand the middle position of the first annular sealing ring outward, so that it is tightly attached to the inner wall of the annular sealing groove, increasing the sealing performance and realizing the function of internal support and anti-retraction.
[0017] (2) By setting an O-ring, a retaining ring and an interface sealing ring, when the interface is connected to the oil outlet and oil inlet, the O-ring can fit the end of the interface, and the interface sealing ring at the retaining ring hugs the outer wall of the interface, which increases the sealing performance and prevents the interface from loosening by rotation, thus realizing the function of strengthening the sealing at the interface.
[0018] (3) By setting an annular pre-groove, an annular positioning rubber ring, a second annular sealing ring and a pre-drilled screw hole, when the flange is connected to the machine tool, the sealing ring assembly composed of the annular positioning rubber ring and the second annular sealing ring increases the sealing performance of the flange connection position, the annular pre-groove increases the stability of the sealing ring installation, and the pre-drilled screw hole facilitates the bolt to pass through, thus realizing the function of strengthening the sealing at the flange. Attached Figure Description
[0019] Figure 1 This is a front view structural diagram of the present utility model;
[0020] Figure 2 This is a partial enlarged cross-sectional view of the sealing ring of this utility model.
[0021] Figure 3 For the present utility model Figure 1 Enlarged cross-sectional view of a portion of point A in the middle section;
[0022] Figure 4 This is a partial sectional view of the side of the mating flange of this utility model.
[0023] In the diagram: 1. Outer shell; 2. Annular oil groove; 3. Annular sealing groove; 4. Oil outlet; 5. Rotary shaft; 6. Sealing ring; 7. First annular sealing ring; 8. Side groove; 9. First abutment ring; 10. Spring through groove; 11. Support spring; 12. Second abutment ring; 13. Oil inlet; 14. Oil inlet; 15. O-ring seal; 16. Fixing ring; 17. Interface sealing ring; 18. Connecting flange; 19. Oil outlet; 20. Oil return port; 21. Annular pre-grooved groove; 22. Annular positioning rubber ring; 23. Second annular sealing ring; 24. Pre-grooved screw hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example: Please refer to Figure 1-4 A hydraulic indexing chuck oil distributor for preventing internal leakage includes an outer shell 1. The outer shell 1 has four sets of annular oil grooves 2 inside. The annular oil grooves 2 are provided on both sides of the annular oil grooves 3. The bottom end of the outer shell 1 is provided with two sets of oil outlet ports 4. The top end of the outer shell 1 is provided with two sets of oil inlet ports 14. The outer shell 1 is laterally movably connected to a rotary shaft 5. The rotary shaft 5 is fixedly connected to five sets of sealing rings 6. The sealing rings 6 are covered with a first annular sealing ring 7. The rotary shaft 5 has four sets of oil passage ports 13 inside. The upper and lower ends of the right side of the rotary shaft 5 are respectively provided with oil outlet ports 19. The front and rear ends of the right side of the rotary shaft 5 are respectively provided with oil return ports 20. The right side of the rotary shaft 5 is fixedly connected to a docking flange 18. The sealing rings 6 are provided with a support component to strengthen the sealing and prevent internal leakage.
[0026] Please see Figure 1-4 A hydraulic indexing chuck distributor for preventing internal leakage also includes a support assembly. The support assembly includes two sets of side grooves 8, which are respectively opened on the left and right sides of the sealing ring 6. The sealing ring 6 has six sets of spring through grooves 10 inside. A first abutment ring 9 is provided on the left side of the side groove 8, and a second abutment ring 12 is provided on the right side of the sealing ring 6. A support spring 11 is provided between the first abutment ring 9 and the second abutment ring 12.
[0027] The external shape and size of the first abutment ring 9 and the second abutment ring 12 are compatible with the internal shape and size of the side groove 8. The first abutment ring 9 and the second abutment ring 12 have the same shape and size. The outer diameter of the support spring 11 is the same as the inner diameter of the spring through groove 10. The two sides of the support spring 11 are welded to the first abutment ring 9 and the second abutment ring 12 respectively. The outer surfaces of the first abutment ring 9 and the second abutment ring 12 are respectively attached to the inner wall of the first annular sealing ring 7. The first annular sealing ring 7, the first abutment ring 9, and the second abutment ring 12 are not connected. The support sealing ring increases the sealing performance.
[0028] Specifically, such as Figure 1 and Figure 2 As shown, the annular oil grooves 2 are sealed by a sealing structure consisting of an annular sealing groove 3, a sealing ring 6, and a first annular sealing ring 7. The outer wall of the first annular sealing ring 7 is attached to the inner wall of the annular sealing groove 3. The first abutment ring 9 and the second abutment ring 12 in the side groove 8 are pushed outward by the supporting spring 11 between them. The first abutment ring 9 and the second abutment ring 12 expand the middle position of the first annular sealing ring 7 outward, so that it is tightly attached to the inner wall of the annular sealing groove 3, thereby increasing the sealing performance.
[0029] O-rings 15 are glued to the inside of the oil outlet port 4 and the oil inlet port 14 respectively. Two sets of fixing rings 16 are fixedly connected to the upper and lower ends of the outer shell 1 respectively. Interface sealing rings 17 are glued to the inner wall of the fixing rings 16. The fixing rings 16 coincide with the vertical center lines of the corresponding oil outlet port 4 and oil inlet port 14. The interface sealing rings 17 are elastic, which increases the sealing performance at the interface.
[0030] Specifically, such as Figure 1 and Figure 3 As shown, the O-ring 15 can fit against the end of the interface, and the interface sealing ring 17 at the fixing ring 16 hugs the outer wall of the interface, increasing the sealing performance while preventing it from loosening due to rotation.
[0031] An annular pre-grooved groove 21 is provided on the right side of the mating flange 18. An annular positioning rubber ring 22 is bonded inside the annular pre-grooved groove 21. A second annular sealing ring 23 is bonded to the right side of the annular positioning rubber ring 22. Multiple sets of pre-opened screw holes 24 are provided inside the annular positioning rubber ring 22 and the second annular sealing ring 23. The outer diameters of the mating flange 18 and the second annular sealing ring 23 are the same. The left side of the second annular sealing ring 23 is bonded to the right side of the mating flange 18. The positions of the pre-opened screw holes 24 and the screw holes on the mating flange 18 correspond one-to-one, which increases the sealing performance at the flange mating.
[0032] Specifically, such as Figure 1 and Figure 4 As shown, the sealing ring assembly consisting of the annular positioning rubber ring 22 and the second annular sealing ring 23 increases the sealing performance of the connection position of the mating flange 18, the annular pre-grooved groove 21 increases the stability of the sealing ring installation, and the pre-drilled screw hole 24 facilitates the passage of bolts.
[0033] Working Principle: In use, hydraulic oil is first injected through the inlet port 14. The oil spreads along the corresponding annular oil groove 2 and enters the internal oil passage through the oil port 13, exiting through the outlet port 19. Return oil enters through the return port 20, flows back through the oil port 13 to the annular oil groove 2, and exits through the outlet port 4. The annular oil grooves 2 are sealed by a sealing structure consisting of an annular sealing groove 3, a sealing ring 6, and a first annular sealing ring 7. The outer wall of the first annular sealing ring 7 fits against the inner wall of the annular sealing groove 3. The first abutment ring 9 and the second abutment ring 12 in the side groove 8 are pushed outward by the supporting springs 11 between them. The first abutment ring 9 and the second abutment ring 12 expand the middle position of the first annular sealing ring 7 outward, making it fit tightly against the inner wall of the annular sealing groove 3, increasing the sealing performance. As the interface is connected to the outlet port 4 and the inlet port 14, the O-ring seal 15 can fit against the end of the interface, and the interface sealing ring 17 at the fixing ring 16 hugs the outer wall of the interface, increasing the sealing performance and preventing loosening due to rotation. The mating flange 18 is mated with the machine tool. The sealing ring assembly consisting of the annular positioning rubber ring 22 and the second annular sealing ring 23 increases the sealing performance of the connection position of the mating flange 18. The annular pre-grooved groove 21 increases the stability of the sealing ring installation, and the pre-drilled screw hole 24 facilitates the passage of bolts.
[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A hydraulic indexing chuck distributor for preventing internal leakage, comprising an outer shell (1), characterized in that: The outer shell (1) has four sets of annular oil grooves (2) inside. The annular oil grooves (2) are provided with annular sealing grooves (3) on both sides. The bottom of the outer shell (1) is provided with two sets of oil outlet ports (4). The top of the outer shell (1) is provided with two sets of oil inlet ports (14). The outer shell (1) is laterally connected to a rotating shaft (5). The rotating shaft (5) is fixedly connected to five sets of sealing rings (6). The sealing rings (6) are covered with a first annular sealing ring (7). The rotating shaft (5) has four sets of oil passages (13) inside. The upper and lower ends of the right side of the rotating shaft (5) are respectively provided with oil outlets (19). The front and rear ends of the right side of the rotating shaft (5) are respectively provided with oil return ports (20). The right side of the outside of the rotating shaft (5) is fixedly connected with a docking flange (18). The sealing rings (6) are provided with a support component to strengthen the sealing and prevent internal leakage. The support assembly includes two sets of side grooves (8), which are respectively opened on the left and right sides of the sealing ring (6). The sealing ring (6) has six sets of spring through grooves (10) inside. A first abutment ring (9) is provided on the left side of the side groove (8), and a second abutment ring (12) is provided on the right side of the sealing ring (6). A support spring (11) is provided between the first abutment ring (9) and the second abutment ring (12).
2. The hydraulic indexing chuck distributor for preventing internal leakage according to claim 1, characterized in that: The external shape and size of the first abutment ring (9) and the second abutment ring (12) are compatible with the internal shape and size of the side groove (8), and the shape and size of the first abutment ring (9) and the second abutment ring (12) are the same.
3. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 1, characterized in that: The outer diameter of the support spring (11) is the same as the inner diameter of the spring through groove (10), and the two sides of the support spring (11) are welded to the first abutment ring (9) and the second abutment ring (12) respectively.
4. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 1, characterized in that: The outer surfaces of the first abutment ring (9) and the second abutment ring (12) are respectively attached to the inner wall of the first annular sealing ring (7), and the first annular sealing ring (7), the first abutment ring (9), and the second abutment ring (12) are not connected.
5. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 1, characterized in that: The oil outlet (4) and oil inlet (14) are respectively bonded with O-ring seals (15), and the upper and lower ends of the outer shell (1) are respectively fixedly connected with two sets of fixing rings (16), and the inner wall of the fixing rings (16) is bonded with an interface sealing ring (17).
6. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 5, characterized in that: The fixing ring (16) is aligned with the vertical center line of the oil outlet (4) and oil inlet (14) at the corresponding positions, and the interface sealing ring (17) is elastic.
7. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 1, characterized in that: The right side of the docking flange (18) is provided with an annular pre-grooved groove (21), and an annular positioning rubber ring (22) is glued inside the annular pre-grooved groove (21). A second annular sealing ring (23) is glued to the right side of the annular positioning rubber ring (22). Multiple sets of pre-grooved screw holes (24) are provided inside the annular positioning rubber ring (22) and the second annular sealing ring (23).
8. A hydraulic indexing chuck distributor for preventing internal leakage according to claim 7, characterized in that: The outer diameters of the docking flange (18) and the second annular sealing ring (23) are the same. The left side of the second annular sealing ring (23) and the right side of the docking flange (18) are bonded together. The pre-drilled screw hole (24) and the screw hole on the docking flange (18) are in one-to-one correspondence.