A sealing structure for a CNC lathe tool turret cylinder

Abstract

This utility model discloses a sealing structure for a CNC lathe turret cylinder, comprising: an oil reservoir seal and a connecting pipe seal. Limiting sleeves are fixedly connected to the internal cavities of both the oil reservoir seal and the connecting pipe seal. A spring is fixedly connected above the limiting sleeve, and a sealing gasket is fixedly connected above the spring. A miniature oil storage cavity is formed inside the sealing gasket, and multiple sets of oil outlet holes are formed around the inner side of the sealing gasket. An oil filling port is formed above the sealing gasket. In this utility model, the elastic restoring force of the spring pushes the sealing gasket to automatically compensate for the gap, continuously maintaining tight contact between the sealing surfaces. Compared with traditional sealing structures, this greatly delays the sealing failure process caused by wear, effectively reduces hydraulic oil leakage, ensures stable cylinder pressure, and avoids problems such as decreased indexing accuracy and sluggish movement of the turret due to insufficient pressure.

Description

Technical Field

[0001] This utility model relates to the field of CNC lathe technology, specifically a sealing structure for a CNC lathe turret cylinder. Background Technology

[0002] The CNC lathe turret cylinder is a key component of the CNC lathe turret system. It mainly consists of a cylinder barrel, cylinder head, piston, piston rod, sealing device, buffer device, and exhaust device. Its working principle is based on the hydrostatic transmission principle of the hydraulic system. Hydraulic oil acts on the piston, pushing the piston rod to move, thereby realizing the indexing, positioning, and clamping actions of the turret. The function of the turret cylinder is to provide power for the movement of the turret. It has the advantages of simple structure, reliable operation, and smooth movement. It can enable the turret to quickly and accurately switch tools, improving machining efficiency and accuracy.

[0003] Existing CNC lathe tool turret cylinder internal seals are prone to wear under frequent reciprocating motion and long-term high pressure, high temperature and high friction conditions. As the service time increases, the material of the seal body is worn down and the elasticity decreases, which causes the gap between the seal and the sealing surface to increase continuously. This leads to increased hydraulic oil leakage, difficulty in maintaining cylinder pressure, and causes a decrease in turret indexing accuracy, slow movement or even failure. At the same time, frequent replacement of seals increases maintenance costs and downtime, and reduces equipment production efficiency and machining accuracy stability. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing structure for the hydraulic cylinder of a CNC lathe tool turret in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for a CNC lathe turret cylinder, comprising: an oil reservoir seal and a connecting pipe seal, wherein a limiting sleeve is fixedly connected to the internal cavity of both the oil reservoir seal and the connecting pipe seal, a spring is fixedly connected above the limiting sleeve, a sealing gasket is fixedly connected above the spring, a miniature oil storage cavity is formed inside the sealing gasket, multiple sets of oil outlet holes are formed around the inner side of the sealing gasket, and an oil filling port is formed above the sealing gasket.

[0006] As a further embodiment of this utility model: both the oil can mouth seal and the connecting pipe seal are fixedly connected to a retaining ring on their outer sides. One end of the retaining ring is an inclined surface, and the other end of the retaining ring is fixedly connected to a limiting block. Both the oil can mouth seal and the connecting pipe seal are fixedly connected to a retaining plate on their outer sides. The retaining ring and the retaining plate are staggered on the same horizontal line, and a retaining groove is opened on the inner side of the retaining plate.

[0007] As a further improvement of this utility model, both the oil can mouth seal and the connecting pipe seal are fixedly connected to the side of an extension pipe.

[0008] As a further improvement of this utility model: the limiting sleeve, the spring, and the sealing gasket together form a self-compensating sealing structure.

[0009] As a further embodiment of this utility model: the oil outlet extends from the inside of the sealing gasket into the interior of the micro oil storage chamber, and the oil filling port extends from the top of the sealing gasket into the interior of the micro oil storage chamber.

[0010] As a further embodiment of this utility model: the oil can mouth seal and the connecting pipe seal are respectively provided with two sets of the retaining rings, the limiting blocks, the retaining plates and the retaining grooves on the sides, and the retaining rings on the side of the oil can mouth seal are adapted to the retaining grooves on the side of the connecting pipe seal, and the retaining rings on the side of the connecting pipe seal are adapted to the retaining grooves on the side of the oil can mouth seal.

[0011] As a further improvement of this utility model, the specifications, dimensions, and internal components of the oil can mouth seal and the connecting pipe seal are identical.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the elastic restoring force of the spring pushes the sealing gasket to automatically compensate for the gap, continuously maintaining close contact between the sealing surfaces. Compared with traditional sealing structures, this greatly delays the sealing failure process caused by wear, effectively reduces hydraulic oil leakage, ensures stable cylinder pressure, and avoids problems such as decreased indexing accuracy and slow operation of the turret due to insufficient pressure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the sealing structure of the CNC lathe tool turret cylinder described in this utility model;

[0015] Figure 2 This is a schematic diagram of the sealing structure of a CNC lathe turret cylinder described in this utility model, in which the oil reservoir port seal and the connecting pipe seal are separated.

[0016] Figure 3 This is a schematic diagram showing the disassembled structure of the sealing structure of the CNC lathe turret cylinder described in this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the sealing gasket in the sealing structure of the CNC lathe turret cylinder described in this utility model.

[0018] In the diagram: 1. Oil reservoir opening seal; 2. Connecting pipe seal; 3. Limiting sleeve; 4. Spring; 5. Sealing gasket; 6. Miniature oil storage chamber; 7. Oil outlet; 8. Oil filling port; 9. Snap ring; 10. Limiting block; 11. Snap plate; 12. Snap groove; 13. Extension pipe. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0021] Reference Figures 1 to 4 In this embodiment of the utility model, a sealing structure for a CNC lathe turret cylinder includes: an oil reservoir seal 1 and a connecting pipe seal 2, wherein the specifications, dimensions and internal components of the oil reservoir seal 1 and the connecting pipe seal 2 are identical.

[0022] When connecting the oil can mouth seal 1 and the connecting pipe seal 2, both the oil can mouth seal 1 and the connecting pipe seal 2 are fixedly connected to the outer side with retaining rings 9. The retaining ring 9 on the side of the oil can mouth seal 1 is adapted to the retaining groove 12 on the side of the connecting pipe seal 2, and the retaining ring 9 on the side of the connecting pipe seal 2 is adapted to the retaining groove 12 on the side of the oil can mouth seal 1. At the same time, one end of the retaining ring 9 is an inclined surface. During installation, this inclined surface facilitates the smooth insertion of the retaining ring 9 into the retaining groove 12. The limiting block 10 fixed to the other end of the retaining ring 9 can prevent the retaining ring 9 from being over-inserted, ensuring the accuracy and stability of the connection, thereby realizing the rapid connection between the oil can mouth seal 1 and the connecting pipe seal 2.

[0023] Both the oil can mouth seal 1 and the connecting pipe seal 2 have a limiting sleeve 3 fixedly attached inside their cavities. A spring 4 is fixedly attached above the limiting sleeve 3, and a sealing gasket 5 is fixedly attached above the spring 4. The limiting sleeve 3, spring 4, and sealing gasket 5 together form a self-compensating sealing structure. In terms of sealing operation, in the initial state, the spring 4 is in a certain pre-compression state, which makes the two sets of sealing gaskets 5 fit tightly together and play a good sealing role. As the usage time increases, the sealing gaskets 5 wear out, and the gap between the two sets of sealing gaskets 5 tends to increase. At this time, the spring 4 will further extend due to the elastic restoring force, pushing the two sets of sealing gaskets 5 to move relative to each other, automatically compensating for the gap caused by wear, maintaining the tight contact between the two sets of sealing gaskets 5, and ensuring the sealing effect.

[0024] The sealing gasket 5 has a miniature oil reservoir 6 inside, and multiple sets of oil outlet holes 7 are arranged around the inner side of the sealing gasket 5. An oil filling port 8 is provided on the top of the sealing gasket 5. The oil outlet holes 7 penetrate from the inner side of the sealing gasket 5 into the miniature oil reservoir 6, and the oil filling port 8 penetrates from the top of the sealing gasket 5 into the miniature oil reservoir 6. The miniature oil reservoir 6 and related structures inside the sealing gasket 5 can achieve integrated sealing and lubrication. Lubricating oil is injected into the miniature oil reservoir 6 in advance through the oil filling port 8. When the cylinder is working, the frictional heat generated by the movement of the piston or piston rod and the pressure changes will cause the lubricating oil in the miniature oil reservoir 6 to seep out through the multiple sets of oil outlet holes 7 around the inner side of the sealing gasket 5 to the sealing surface and the surface of the moving parts, forming a uniform oil film. This oil film reduces the coefficient of friction between the sealing surface and the moving parts, reducing wear, and also fills the tiny gaps in the sealing surface, helping to improve the sealing performance.

[0025] Both the oil can mouth seal 1 and the connecting pipe seal 2 have extension pipes 13 fixedly connected to their sides. These extension pipes 13 can be used to connect with other components to ensure the normal flow and pressure stability of the hydraulic oil inside the cylinder, and to ensure the normal operation of the entire CNC lathe turret cylinder.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0027] The working principle of this utility model is as follows: During the initial preparation, the oil can mouth seal 1, connecting pipe seal 2, limiting sleeve 3, spring 4, sealing gasket 5, retaining ring 9, retaining plate 11, and other parts should be carefully inspected to check for damage, deformation, dimensional discrepancies, etc., to ensure that the parts are of qualified quality. At the same time, an appropriate amount of lubricating oil is injected into the miniature oil storage chamber 6 through the oil filling port 8 above the sealing gasket 5. During the installation stage, the internal components are installed first. The limiting sleeve 3 is fixed in the internal cavity of the oil can mouth seal 1 and the connecting pipe seal 2 respectively. Install spring 4 on top of spring 3, ensuring it can extend and retract freely. Then, install sealing gasket 5 on top of spring 4 to secure the connection. Next, connect the seals, aligning oil can mouth seal 1 and connecting pipe seal 2. Use the inclined surface of one end of snap ring 9 to guide it smoothly into the matching slot 12. Limit block 10 prevents snap ring 9 from being over-inserted to ensure accurate and stable connection, completing the quick connection between the two. Finally, install the installed sealing structure as a whole onto the corresponding position of the CNC lathe tool turret cylinder and connect extension pipe 13 to other components.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for a CNC lathe turret cylinder, characterized in that, include: The oil reservoir nozzle seal (1) and the connecting pipe seal (2) are provided. A limiting sleeve (3) is fixedly connected inside the cavity of both the oil reservoir nozzle seal (1) and the connecting pipe seal (2). A spring (4) is fixedly connected above the limiting sleeve (3). A sealing gasket (5) is fixedly connected above the spring (4). A miniature oil storage cavity (6) is opened inside the sealing gasket (5). Multiple sets of oil outlet holes (7) are opened around the inner side of the sealing gasket (5). An oil filling port (8) is opened above the sealing gasket (5).

2. The sealing structure of a CNC lathe turret cylinder according to claim 1, characterized in that, Both the oil can opening seal (1) and the connecting pipe seal (2) are fixedly connected to a retaining ring (9) on their outer sides. One end of the retaining ring (9) is an inclined surface, and the other end of the retaining ring (9) is fixedly connected to a limiting block (10). Both the oil can opening seal (1) and the connecting pipe seal (2) are fixedly connected to a retaining plate (11) on their outer sides. The retaining ring (9) and the retaining plate (11) are staggered on the same horizontal line. The retaining plate (11) has a retaining groove (12) on its inner side.

3. The sealing structure of a CNC lathe turret cylinder according to claim 1, characterized in that, Both the oil can opening seal (1) and the connecting pipe seal (2) have extension pipes (13) fixedly connected to their sides.

4. The sealing structure of a CNC lathe turret cylinder according to claim 1, characterized in that, The limiting sleeve (3), the spring (4), and the sealing gasket (5) together form a self-compensating sealing structure.

5. The sealing structure of a CNC lathe turret cylinder according to claim 1, characterized in that, The oil outlet (7) extends from the inside of the sealing gasket (5) into the interior of the micro oil storage chamber (6), and the oil filling port (8) extends from the top of the sealing gasket (5) into the interior of the micro oil storage chamber (6).

6. The sealing structure of a CNC lathe turret cylinder according to claim 2, characterized in that, The oil can opening seal (1) and the connecting pipe seal (2) are respectively provided with two sets of the retaining ring (9), the limiting block (10), the retaining plate (11) and the retaining groove (12) on the side. The retaining ring (9) on the side of the oil can opening seal (1) is adapted to the retaining groove (12) on the side of the connecting pipe seal (2), and the retaining ring (9) on the side of the connecting pipe seal (2) is adapted to the retaining groove (12) on the side of the oil can opening seal (1).

7. The sealing structure of a CNC lathe turret cylinder according to claim 1, characterized in that, The specifications, dimensions, and internal components of the oil can mouth seal (1) and the connecting pipe seal (2) are identical.

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