Plastic gland structure for sealing machine tool chuck

Abstract

The utility model relates to the technical field of plastic glands, and discloses a plastic gland structure for sealing a machine tool chuck, which comprises a gland body, a mounting hole is arranged in the gland body, a sealing assembly is arranged in the gland body, the sealing assembly comprises a first sealing ring, and a second sealing ring is arranged in the first sealing ring. The outer wall of the first sealing ring is fixedly connected to the inner wall of the gland body, the inner wall of the gland body is fixedly connected with a sliding plate, the outer wall of the sliding plate is slidably connected with a second sealing ring, the outer wall of the sliding plate is fixedly connected with a sliding rod, the outer wall of the sliding rod is sleeved with a spring, and a sliding groove is formed in the second sealing ring. According to the sealing device, the first sealing ring is fixed to the inner wall of the gland body and provides guarantee for preliminary sealing, the second sealing ring is ingeniously matched with the sliding plate, the sliding rod and the spring, self-adaptive sealing is achieved, gaps generated due to vibration and pressure changes are effectively filled, external impurities and liquid are prevented from invading the interior of a machine tool chuck through the mounting hole, and the sealing effect is better.

Description

Technical Field

[0001] This utility model relates to the field of plastic cap technology, and in particular to a plastic cap structure for sealing a machine tool chuck. Background Technology

[0002] Machine tool chucks play a crucial role in the machining field. As an important component for clamping workpieces, their sealing performance and structural strength directly affect machining accuracy and equipment lifespan. Plastic gland structures are commonly used for sealing and protecting machine tool chucks due to their advantages such as low cost and corrosion resistance. As the machining industry develops towards higher precision and efficiency, the performance requirements for machine tool chuck sealing plastic glands are also increasing.

[0003] In existing technologies, common machine tool chuck sealing plastic glands mostly adopt a single sealing ring structure. The sealing ring is directly fixed to the inner wall of the gland, and its elastic deformation allows it to fit tightly against the chuck surface, thus achieving a seal. This structure mainly relies on the elasticity of the sealing ring itself and the pre-tightening force during installation to ensure the sealing effect. During machine tool operation, factors such as vibration and pressure fluctuations can easily cause changes in the sealing contact area and pressure between the sealing ring and the chuck, leading to a decrease in sealing performance.

[0004] However, a single sealing ring structure has significant shortcomings in dealing with the complex and ever-changing operating conditions of machine tools. Because machine tools generate continuous vibrations during machining, and changes in machining load cause fluctuations in the internal pressure of the chuck, a single sealing ring cannot dynamically adjust the sealing state, easily leading to gaps. This allows external impurities such as cutting fluid and metal shavings to enter the chuck, not only accelerating the wear of chuck components but also potentially causing problems such as decreased chuck accuracy and operational malfunctions. This, in turn, increases equipment maintenance costs and affects the stable operation and machining efficiency of the machine tool. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a plastic pressure cap structure for sealing machine tool chucks, which aims to improve the problem that due to the continuous vibration generated by the machine tool during processing and the fluctuation of internal pressure of the chuck caused by changes in processing load, a single sealing ring is difficult to dynamically adjust the sealing state and is prone to gaps.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic pressure cap structure for sealing a machine tool chuck, comprising a pressure cap body, wherein an installation hole is provided inside the pressure cap body, and a sealing component is provided inside the pressure cap body;

[0007] The sealing assembly includes a first sealing ring, the outer wall of which is fixedly connected to the inner wall of the pressure cap body. A sliding plate is fixedly connected to the inner wall of the pressure cap body. A second sealing ring is slidably connected to the outer wall of the sliding plate. A sliding rod is fixedly connected to the outer wall of the sliding plate. A spring is sleeved on the outer wall of the sliding rod. A groove is formed inside the second sealing ring.

[0008] Furthermore, a first reinforcing rib is fixedly connected to the inner wall of the pressure cap body, a second reinforcing rib is fixedly connected to the inner wall of the pressure cap body, a fiber layer is provided inside the pressure cap body, and a composite layer is provided inside the pressure cap body.

[0009] Furthermore, the outer wall of the second sealing ring is slidably connected to the inner wall of the gland body, and the second sealing ring is used to seal the gland body.

[0010] Furthermore, one end of the spring is fixedly connected to the outer wall of the sliding plate, and the other end of the spring is fixedly connected to the inner wall of the sealing ring.

[0011] Furthermore, the outer wall of the sliding rod is slidably connected to the inner wall of the second sealing ring, and the spring is used to guide the movement of the sliding plate.

[0012] Furthermore, the first reinforcing rib and the second reinforcing rib form a triangular shape.

[0013] Furthermore, the fiber layer is composed of glass fiber and is used to cushion the cap body.

[0014] Furthermore, the composite layer is made of stainless steel and is used to reinforce the gland body.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the first sealing ring is fixed to the inner wall of the pressure cover body to provide initial sealing. The second sealing ring, ingeniously combined with the sliding plate, sliding rod, and spring, achieves adaptive sealing. When external pressure or machine tool operation causes vibration, the spring pushes the second sealing ring along the sliding plate to tightly fit the inner wall of the pressure cover body, effectively filling the gaps caused by vibration and pressure changes. This prevents external impurities and liquids from entering the machine tool chuck through the mounting hole, resulting in a better sealing effect. This significantly reduces the risk of machine tool failure due to seal failure, ensures stable machine tool operation, and reduces maintenance costs and downtime.

[0017] 2. In this utility model, the first reinforcing rib and the second reinforcing rib form a triangular structure. Utilizing the stability characteristics of a triangle, the deformation resistance of the gland body is greatly enhanced, making it less prone to deformation when subjected to mechanical stress and external impact during machine tool operation. The fiber layer composed of glass fiber effectively absorbs machine tool vibration due to its excellent flexibility and buffering performance. The composite layer composed of stainless steel provides solid support for the gland body with its high strength and corrosion resistance. The synergistic effect of multiple reinforcement designs gives the gland structure excellent strength and durability, meeting the stringent requirements of high load and long-term operation of machine tools. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a plastic pressure cap structure for sealing a machine tool chuck, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of a portion of the sealing ring structure of a plastic pressure cap for sealing a machine tool chuck, as proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the two-part sealing ring structure of a plastic pressure cap for sealing a machine tool chuck, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the sliding rod portion of a plastic pressure cap structure for sealing a machine tool chuck, as proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of a portion of the reinforcing rib of a plastic pressure cap structure for sealing a machine tool chuck, as proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the cover body structure of a plastic cover structure for sealing a machine tool chuck, as proposed in this utility model.

[0024] Legend:

[0025] 1. Gland body; 2. Mounting hole; 3. Sealing ring one; 4. Sealing ring two; 5. Sliding plate; 6. Spring; 7. Sliding rod; 8. Slide groove; 9. Reinforcing rib one; 10. Fiber layer; 11. Composite layer; 12. Reinforcing rib two. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-3 The present invention provides an embodiment of a plastic pressure cap structure for sealing a machine tool chuck, comprising a pressure cap body 1, an installation hole 2 inside the pressure cap body 1, and a sealing component inside the pressure cap body 1.

[0028] The sealing assembly includes a sealing ring 3, which can block larger particles and some liquid. The outer wall of the sealing ring 3 is fixedly connected to the inner wall of the gland body 1. A sliding plate 5 is fixedly connected to the inner wall of the gland body 1, forming a sliding fit with the sealing ring 4, providing a track for the movement of the sealing ring 4, ensuring that the sealing ring 4 remains stable during sliding, and supporting the sliding rod 7. The outer wall of the sliding plate 5 is slidably connected to the sealing ring 4, which can move along the sliding plate 5 under the action of the spring 6. By tightly fitting the inner wall of the gland body 1, it achieves dynamic sealing of the mounting hole 2, filling the gaps caused by vibration and pressure changes. It is the core execution component of the sealing function. The outer wall of the sliding plate 5 is fixedly connected to the sliding rod 7, which plays a guiding role, ensuring that the sealing ring 4 slides in a fixed direction, ensuring the accuracy and stability of its sealing position. The outer wall of the sliding rod 7 is fitted with the spring 6, and the sealing ring 4 has a sliding groove 8 inside.

[0029] Specifically, the outer wall of sealing ring 3 is fixedly connected to the inner wall of the gland body 1, providing initial sealing to the mounting hole 2 and blocking larger particles and some liquid. The sliding plate 5 is fixed to the inner wall of the gland body 1 by welding or integral molding, and its outer wall forms a sliding fit with sealing ring 4, allowing sealing ring 4 to move up and down along the sliding plate 5. The sliding rod 7 on the outer wall of the sliding plate 5 vertically penetrates the groove 8 inside the sealing ring 4, serving as a guide to ensure stable movement of the sealing ring 4. A spring 6, fitted on the outer wall of the sliding rod 7, is firmly welded at one end to the outer wall of the sliding plate 5, and the other end is fixed to the inner wall of the sealing ring 4 by embedding or bonding. When the machine tool vibrates or external pressure changes, the spring 6 is compressed or stretched, causing elastic deformation. Using its own elastic restoring force, it pushes the sealing ring 4 to slide along the sliding plate 5, making it tightly fit the inner wall of the gland body 1, automatically filling the gaps caused by vibration and pressure changes, achieving dynamic sealing, and effectively preventing external impurities and liquids from passing through the mounting hole 2. Enter the machine tool chuck to ensure stable machine tool operation.

[0030] Reference Figure 4 and Figure 6The inner wall of the gland body 1 is fixedly connected with reinforcing rib 1-9 and reinforcing rib 2-12, which intersect to form a triangular shape on the inner wall of the gland body 1. Utilizing the stable mechanical properties of a triangle, the mechanical stress or external impact acting on the gland body 1 is evenly dispersed, enhancing the deformation resistance of the gland body 1 and improving structural stability. A fiber layer 10 is provided inside the gland body 1, evenly distributed throughout the gland body 1. Internally, thanks to the excellent flexibility and cushioning properties of glass fiber, it absorbs the vibration energy generated during machine tool operation, reduces the impact damage of vibration on the gland body 1, lowers the risk of fatigue failure, and extends the service life of the gland. The gland body 1 is provided with a composite layer 11. The outer wall of the sealing ring 2 4 is slidably connected to the inner wall of the gland body 1. The sealing ring 2 4 is used to seal the gland body 1. One end of the spring 6 is fixedly connected to the outer wall of the sliding plate 5, and the other end of the spring 6 is fixedly connected to the inner wall of the sealing ring 2 4. The outer wall of the sliding rod 7 is slidably connected to the inner wall of the sealing ring 2 4. The spring 6 is used to guide the movement of the sliding plate 5. The reinforcing rib 1 9 and the reinforcing rib 2 12 form a triangular shape. The fiber layer 10 is composed of glass fiber and is used to cushion the gland body 1. The composite layer 11 is composed of stainless steel and is used to reinforce the gland body 1.

[0031] Specifically, the reinforcing ribs 9 and 12 fixed to the inner wall of the gland body 1 intersect to form a triangular shape. Based on the stable mechanical properties of a triangle, when the gland body 1 is subjected to mechanical stress or external impact, the triangular structure can evenly distribute the force, greatly enhancing the deformation resistance of the gland body 1 and making it less prone to deformation when subjected to large external forces. The fiber layer 10, composed of glass fiber, is evenly distributed inside the gland body 1. Glass fiber has good flexibility and buffering performance. When the machine tool vibrates, the fiber layer 10 can effectively absorb the vibration energy, reduce the impact damage of vibration on the gland body 1, and reduce the risk of fatigue failure. The composite layer 11, composed of stainless steel, is tightly attached to the inside of the gland body 1. The high strength of stainless steel provides rigid support for the gland body 1, while its corrosion resistance resists the erosion of corrosive media such as cutting fluid, extending the service life of the gland. The multiple reinforcement designs of the reinforcing ribs, fiber layer 10, and composite layer 11 work together to significantly improve the strength and durability of the gland structure.

[0032] Working principle: The pressure plate body 1 has an installation hole 2 inside. In the sealing assembly inside, the outer wall of the sealing ring 3 is fixedly connected to the inner wall of the pressure plate body 1, which plays a preliminary sealing role. The sliding plate 5 is fixed to the inner wall of the pressure plate body 1, and the sealing ring 4 slidably connected to its outer wall can move along the sliding plate 5. The sliding rod 7 on the outer wall of the sliding plate 5 passes through the sliding groove 8 inside the sealing ring 4, and the outer wall of the sliding rod 7 is fitted with a spring 6. One end of the spring 6 is connected to the sliding plate 5, and the other end is connected to the inner wall of the sealing ring 4. By utilizing the elasticity of the spring 6, the sealing ring 4 is pushed to fit tightly against the inner wall of the pressure plate body 1, realizing dynamic sealing and effectively preventing external impurities and liquids from entering the machine tool chuck through the installation hole 2, ensuring the stable operation of the machine tool.

[0033] In addition, the reinforcing ribs 9 and 12 fixed on the inner wall of the gland body 1 form a triangular shape. With the stability of the triangle, the deformation resistance of the gland body 1 is enhanced. The fiber layer 10, composed of glass fiber, has good flexibility and cushioning performance, which can absorb the vibration generated during machine tool operation and reduce the impact damage of vibration to the gland body 1. The composite layer 11, composed of stainless steel, provides rigid support for the gland body 1 with its high strength and corrosion resistance, and improves the durability of the gland.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic gland structure for sealing a machine tool chuck, comprising a gland body (1), characterized in that: The pressure cap body (1) has an installation hole (2) inside, and a sealing component is provided inside the pressure cap body (1); The sealing assembly includes a sealing ring one (3), the outer wall of the sealing ring one (3) is fixedly connected to the inner wall of the pressure cap body (1), the inner wall of the pressure cap body (1) is fixedly connected to a sliding plate (5), the outer wall of the sliding plate (5) is slidably connected to a sealing ring two (4), the outer wall of the sliding plate (5) is fixedly connected to a sliding rod (7), the outer wall of the sliding rod (7) is sleeved with a spring (6), and the sealing ring two (4) has a groove (8) inside.

2. The plastic pressure cap structure for sealing a machine tool chuck according to claim 1, characterized in that: The inner wall of the pressure cap body (1) is fixedly connected with a reinforcing rib one (9), the inner wall of the pressure cap body (1) is fixedly connected with a reinforcing rib two (12), the inside of the pressure cap body (1) is provided with a fiber layer (10), and the inside of the pressure cap body (1) is provided with a composite layer (11).

3. The plastic pressure cap structure for sealing a machine tool chuck according to claim 1, characterized in that: The outer wall of the sealing ring 2 (4) is slidably connected to the inner wall of the gland body (1), and the sealing ring 2 (4) is used to seal the gland body (1).

4. The plastic pressure cap structure for sealing a machine tool chuck according to claim 1, characterized in that: One end of the spring (6) is fixedly connected to the outer wall of the sliding plate (5), and the other end of the spring (6) is fixedly connected to the inner wall of the sealing ring (4).

5. The plastic pressure cap structure for sealing a machine tool chuck according to claim 1, characterized in that: The outer wall of the sliding rod (7) is slidably connected to the inner wall of the sealing ring (4), and the spring (6) is used to guide the movement of the sliding plate (5).

6. The plastic pressure cap structure for sealing a machine tool chuck according to claim 2, characterized in that: The first reinforcing rib (9) and the second reinforcing rib (12) form a triangular shape.

7. The plastic pressure cap structure for sealing a machine tool chuck according to claim 2, characterized in that: The fiber layer (10) is composed of glass fiber and is used to cushion the cap body (1).

8. The plastic pressure cap structure for sealing a machine tool chuck according to claim 2, characterized in that: The composite layer (11) is made of stainless steel and is used to reinforce the gland body (1).

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