Improved mechanical cylinder sealing ring
By designing placement grooves and sliding grooves in the improved mechanical cylinder seal ring, and combining them with a limiting assembly consisting of a sliding rod, a limiting ring, and a spring, the problem of tool-less installation of the seal ring was solved, enabling a fast and convenient installation process and improving on-site operation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINYUE MOLD (KUNSHAN) CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-17
Smart Images

Figure CN224134899U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing technology, and in particular to an improved mechanical cylinder sealing ring. Background Technology
[0002] Improved mechanical cylinders, as pneumatic actuators with optimized structure, materials, and manufacturing processes based on traditional designs, are widely used in industries such as industrial automation, packaging, printing and textiles, and medical devices. They offer numerous advantages, including improved work efficiency, enhanced reliability, increased precision, reduced energy consumption, and adaptability to harsh environments. In improved mechanical cylinders, sealing rings form effective seals between the piston and cylinder wall, and between the cylinder head and cylinder body, preventing gas leakage. This ensures sufficient pressure within the cylinder for normal operation, guarantees piston movement accuracy, prevents impurities from entering, and buffers component friction, ultimately playing a crucial role in extending cylinder lifespan and improving the stability of the entire pneumatic system.
[0003] Improved mechanical cylinder seals are generally composed of a sealing body, a reinforcing skeleton, and auxiliary sealing components. They rely on the elastic deformation of the elastic material during installation to fill gaps and prevent gas leakage. They adapt to pressure differences and achieve pressure balance and compensation through their own elasticity and structural characteristics. They use the lip structure and elasticity of the dustproof ring to intercept impurities, and the low friction and wear-resistant properties of the guide ring to precisely guide the piston movement, thus ensuring the sealing, protection, and stable operation of the cylinder in all aspects.
[0004] Some existing improved mechanical cylinder seals cannot be installed without tools, which causes frequent problems in actual operation. In on-site maintenance or installation scenarios, if suitable tools cannot be obtained in time, the installation work will be stalled, equipment downtime will be forced to be extended, and production efficiency will be greatly reduced. This places high demands on operators, requiring them to have the skills and experience to use professional tools, which not only increases personnel training costs but also increases the difficulty of operation. Slight carelessness may damage the seal or other components. Therefore, an improved mechanical cylinder seal is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an improved mechanical cylinder sealing ring, which aims to improve the problem that the existing technology cannot achieve the installation of the sealing ring without tools.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An improved mechanical cylinder sealing ring includes a sealing ring, the inside of which is provided with a placement groove, the inside of which is provided with a second sliding groove, a limiting component is slidably connected inside the sealing ring, the inside of which is provided with a first sliding groove, and a second extrusion plate is slidably connected inside the first sliding groove.
[0008] As a further description of the above technical solution:
[0009] The limiting component includes multiple sliding rods, the outer sides of which are slidably connected to the inside of the sealing ring. A limiting ring is fixedly connected to the outer side of each sliding rod, and a compression plate is fixedly connected to the end of each sliding rod away from the limiting ring.
[0010] As a further description of the above technical solution:
[0011] A spring is fixedly connected to the rear side of the extrusion plate one, and the other end of the spring is fixedly connected to the inside of the sliding groove two.
[0012] As a further description of the above technical solution:
[0013] The outer side of the extrusion plate is slidably connected to the inside of the sliding groove, and the inner side of the limiting ring is slidably connected to the outer side of the sealing ring.
[0014] This utility model has the following beneficial effects:
[0015] In this invention, a sliding rod works in conjunction with a spring, which in turn works with two extrusion plates, enabling the installation of the sealing ring without tools. No additional installation tools are required, allowing workers to perform the installation directly, saving time spent searching for and using tools and improving installation efficiency. This is especially suitable for emergency repairs or rapid on-site installations. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the improved mechanical cylinder sealing ring proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the limiting ring of the improved mechanical cylinder sealing ring proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the extrusion plate of the improved mechanical cylinder sealing ring proposed in this utility model.
[0019] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0020] Legend:
[0021] 1. Sealing ring; 2. Placement groove; 3. Sliding rod; 4. Spring; 5. Restricting ring; 6. Extrusion plate one; 7. Extrusion plate two; 8. Sliding groove one; 9. Sliding groove two. Detailed Implementation
[0022] 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.
[0023] Reference Figures 1 to 3 This utility model provides an embodiment of an improved mechanical cylinder sealing ring, including a sealing ring 1. The sealing ring 1 is manufactured using a special process and has good flexibility and resilience, enabling it to tightly fit the cylinder surface for efficient sealing. The sealing ring 1 has an internal placement groove 2, the size of which is precisely designed to fit the outer diameter of the cylinder, facilitating the smooth installation of the sealing ring 1 onto the cylinder. The internal placement groove 2 has a sliding groove 9, which provides a stable track for the sliding of the extrusion plate 6, ensuring that the extrusion plate 6 can move smoothly in a specific direction when subjected to external force and the action of the spring 4.
[0024] The sealing ring 1 has an internal sliding connection with a limiting component. The presence of the limiting component effectively prevents the extrusion plate 6 from shifting during movement, ensuring the accuracy and stability of the installation. The placement groove 2 has a sliding groove 8 inside. The sliding groove 8 is also precision machined, and its inner wall is smooth, which greatly reduces the friction when the extrusion plate 7 slides, making its movement smoother. The extrusion plate 7 is slidably connected inside the sliding groove 8. The extrusion plate 7 can slide flexibly in the sliding groove 8. When installing the sealing ring 1, it can effectively cooperate with the extrusion plate 6 to achieve a tight fit with the cylinder wall.
[0025] Reference Figure 1 , Figure 3 and Figure 4The limiting component includes multiple sliding rods 3, which are evenly distributed inside the sealing ring 1. These sliding rods 3 provide stable support and guidance for the limiting ring 5 and the extrusion plate 6, keeping their movement on a predetermined trajectory. The outer sides of the multiple sliding rods 3 are slidably connected to the inside of the sealing ring 1. During installation, they can slide flexibly within the sealing ring 1 as the extrusion plate 6 moves, adapting to different installation states. The outer sides of the sliding rods 3 are fixedly connected to the limiting ring 5, which effectively constrains the range of motion of the sliding rods 3, preventing excessive sliding and enhancing the structural stability of the entire limiting component. The inner side of the limiting ring 5 is slidably connected to the outer side of the sealing ring 1, ensuring its own flexible sliding while working in conjunction with the sealing ring 1 to improve overall performance.
[0026] A pressing plate 6 is fixedly connected to the end of the sliding rod 3 away from the limiting ring 5. Under the drive of the sliding rod 3, the pressing plate 6 can move precisely within the sliding groove 9, providing a key force for the tight installation of the sealing ring 1 and the cylinder. The outer side of the pressing plate 6 is slidably connected to the inside of the sliding groove 9, which provides a good limiting effect for the pressing plate 6, ensuring that its movement direction remains consistent and guaranteeing the installation effect. A spring 4 is fixedly connected to the rear side of the pressing plate 6. The spring 4 has strong elastic potential energy and can automatically adjust the force according to the external force on the pressing plate 6 during the installation process, always providing a forward thrust to the pressing plate 6. The other end of the spring 4 is fixedly connected to the inside of the sliding groove 9. The stable connection method allows the spring 4 to fully function during operation, ensuring that the pressing plate 6 continuously applies appropriate pressure to the cylinder wall, completing the tight installation of the sealing ring 1.
[0027] Working principle: When the operator needs to install the sealing ring 1 on the cylinder, the placement groove 2 inside the sealing ring 1 is aligned with the outside of the cylinder, and the sealing ring 1 is slid down. At this time, the pressing plates 6 and 7 inside the sliding groove 8 and sliding groove 9 inside the placement groove 2 will be pressed in different directions. Then, the spring 4 can push the pressing plate 6 or the pressing plate 7 forward, so that the pressing plate 6 and the pressing plate 7 are tightly attached to the outside of the cylinder, thereby completing the installation of the sealing ring 1.
[0028] 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. Improved mechanical cylinder seal ring comprising a seal ring (1), characterized in that: The sealing ring (1) has a placement groove (2) inside, the placement groove (2) has a sliding groove two (9) inside, the sealing ring (1) has a limiting component slidably connected inside, the placement groove (2) has a sliding groove one (8) inside, and the sliding groove one (8) has a pressing plate two (7) slidably connected inside.
2. The improved mechanical cylinder seal ring of claim 1, wherein: The limiting component includes a plurality of sliding rods (3), the outer sides of the plurality of sliding rods (3) are slidably connected to the inside of the sealing ring (1), a limiting ring (5) is fixedly connected to the outer side of the sliding rods (3), and a compression plate (6) is fixedly connected to the end of the sliding rods (3) away from the limiting ring (5).
3. The improved mechanical cylinder seal ring of claim 2, wherein: A spring (4) is fixedly connected to the rear side of the extrusion plate (6), and the other end of the spring (4) is fixedly connected to the inside of the sliding groove (9).
4. The improved mechanical cylinder seal ring of claim 3, wherein: The outer side of the extrusion plate (6) is slidably connected to the inside of the sliding groove (9), and the inner side of the limiting ring (5) is slidably connected to the outer side of the sealing ring (1).