Motion control cylinder
By setting a stepped buffer assembly at both ends of the cylinder block, the problem of fatigue and wear of the seal caused by frequent impact forces of the piston is solved, and the impact force reduction during piston buffering and the seal life is achieved.
Patent Information
- Application Number
- CN202421349852.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-14
AI Technical Summary
During the reciprocating movement of the piston rod, the piston seal is fatigued and worn due to frequent impact forces, which leads to air leakage and unstable piston rod movement.
A first buffer assembly and a second buffer assembly are provided at both ends of the cylinder block to form a stepped buffer to reduce the impact force during piston buffering. The specific implementation includes providing a buffer plate, a limiting rod and an elastic member at the end of the cylinder, and achieving multi-stage buffering through these components.
Through multi-stage cushioning technology, the impact force during piston cushioning is significantly reduced, the service life of the piston seal is extended, and the problems of air leakage and unstable piston rod movement are avoided.
Smart Images
Figure CN222577035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cylinders, and more specifically, to a motion control cylinder. Background Art
[0002] The cylinder is a cylindrical metal part that guides the piston to perform linear reciprocating motion in the cylinder. The air in the engine cylinder converts heat energy into mechanical energy by expansion; the gas in the compressor cylinder is compressed by the piston to increase the pressure. The cylinder performs reciprocating linear motion.
[0003] Existing cylinders are used in automotive parts, medical equipment, etc., but the cylinders change with environmental requirements, and the movement rate of the piston rod in the cylinder is also different. When the piston rod moves back and forth, the impact force generated by the piston and the buffer assembly on the piston rod will cause the piston to deform. Frequent impacts cause fatigue and wear of some seals of the piston, which in turn causes air leakage and unstable extension of the piston rod.
[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a motion control cylinder, by arranging a first buffer assembly and a second buffer assembly at both ends of the cylinder body, the first buffer assembly and the second buffer assembly form a stepped buffer for the piston, thereby reducing the impact force when buffering the piston.
[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a motion control cylinder, including a cylinder body and a piston rod slidably inserted into the inner side from the front end surface of the cylinder body, a piston is arranged on the piston rod, and the piston is set in the cylinder body. Symmetrical buffer parts are arranged at both ends of the cylinder body, and the buffer parts group includes a first buffer component for buffering the piston, and the buffer part group also includes a second buffer component for buffering the first buffer component.
[0007] The utility model is further configured as follows: a first limiting hole is opened at the end of the cylinder body, the first buffer assembly includes a first buffer plate, a first limiting rod corresponding to the first limiting hole is arranged on one side of the first buffer plate, and a first elastic member is arranged at the end of the cylinder body, and the first elastic member has elastic potential energy to push the first buffer plate close to the piston.
[0008] The utility model is further configured as follows: the second buffer assembly includes a second buffer plate, a second limiting rod is arranged on the second buffer plate, a second limiting hole corresponding to the second limiting rod is also opened at the end of the cylinder body, a second elastic member is arranged in the second limiting hole, and the second elastic member has elastic potential energy for pushing the second buffer plate to slide toward the first buffer plate.
[0009] The utility model is further configured as follows: a through hole corresponding to the first limiting rod is opened on the second buffer plate, a limiting block is arranged on the first limiting rod, the limiting block is arranged on a side of the second buffer plate away from the first buffer plate, and the first elastic member corresponds to the limiting block.
[0010] In summary, the utility model has the following beneficial effects:
[0011] When the cylinder is working, the piston rod slides back and forth, so that the piston contacts the first buffer plate in advance, so that the first elastic member pushes the limit block, and the piston is buffered at the first level. When the first buffer plate moves to the second buffer plate, the first buffer plate and the second buffer plate contact, and then the second elastic member and the second elastic member are used to buffer the piston at the second level, thereby achieving a multi-level buffering effect, thereby reducing the impact force when buffering the piston. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 It is an exploded view of the utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the buffer assembly of the utility model;
[0015] Figure 4 It is an exploded view of the buffer assembly of the utility model.
[0016] In the figure: 1. cylinder body; 2. piston rod; 3. piston; 4. first buffer assembly; 5. second buffer assembly; 6. first limiting hole; 7. first buffer plate; 8. first limiting rod; 9. first elastic member; 10. second buffer plate; 11. second limiting rod; 12. second limiting hole; 13. second elastic member; 14. through hole; 15. limiting block. DETAILED DESCRIPTION
[0017] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] A motion control cylinder, such as Figures 1 to 4 As shown, a motion control cylinder includes a cylinder body 1 and a piston rod 2 which is slidably inserted into the inner side from the front end surface of the cylinder body 1, a piston 3 is arranged on the piston rod 2, and the piston 3 is set in the cylinder body 1. Symmetrical buffer groups are arranged at both ends of the cylinder body 1, and the buffer group includes a first buffer component 4 for buffering the piston 3, and the buffer group also includes a second buffer component 5 for buffering the first buffer component 4.
[0019] refer to Figure 2 , Figure 3and Figure 4 As shown: a limiting hole is opened at the end of the cylinder body 1, the first buffer assembly 4 includes a first buffer plate 7, a first limiting rod 8 corresponding to the first limiting hole 6 is arranged on one side of the first buffer plate 7, and a first elastic member 9 is arranged at the end of the cylinder body 1, and the first elastic member 9 has elastic potential energy to push the first buffer plate 7 close to the piston 3.
[0020] In the above embodiment, the first elastic member 9 is a spring, and the first elastic member 9 is sleeved on the first limit rod 8. When the piston rod 2 slides back and forth, the first buffer plate 7 contacts the piston 3 in advance, and then the first elastic member 9 decelerates the piston 3, thereby achieving the effect of buffering the piston 3.
[0021] refer to Figure 2 , Figure 3 and Figure 4 As shown: the second buffer assembly 5 includes a second buffer plate 10, a second limiting rod 11 is arranged on the second buffer plate 10, and a second limiting hole 12 corresponding to the second limiting rod 11 is also opened at the end of the cylinder body 1, and a second elastic member 13 is arranged in the second limiting hole 12, and the second elastic member 13 has elastic potential energy for pushing the second buffer plate 10 to slide toward the first buffer plate 7.
[0022] In the above embodiment, the second elastic member 13 is a spring, and the second elastic member 13 is sleeved on the second limiting rod 11. After the first buffer plate 7 buffers the piston 3, the second buffer plate 10 buffers the first buffer plate 7, thereby achieving a secondary buffering effect on the piston 3.
[0023] refer to Figure 4 As shown: a through hole 14 corresponding to the first limiting rod 8 is opened on the second buffer plate 10, a limiting block 15 is integrally formed on the first limiting rod 8, the limiting block 15 is set on the side of the second buffer plate 10 away from the first buffer plate 7, and the first elastic member 9 corresponds to the limiting block 15.
[0024] In the above embodiment, the setting of the limit block 15 enables the first buffer component 4 to perform primary buffering on the piston 3. After the first buffer component 4 buffers the piston 3, the second buffer component 5 then buffers the first buffer component 4, thereby achieving a secondary buffering effect.
[0025] Working principle:
[0026] When the cylinder is working, the piston rod 2 slides back and forth, so that the piston 3 contacts the first buffer plate 7 in advance, so that the first elastic member 9 pushes the limit block 15, and the piston 3 is buffered at the first level. When the first buffer plate 7 moves to the second buffer plate 10, the first buffer plate 7 and the second buffer plate 10 contact, and then the second elastic member 13 and the second elastic member 13 are used to buffer the piston 3 at the second level, thereby achieving a multi-level buffering effect, thereby reducing the impact force when buffering the piston 3.
[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A motion control cylinder, comprising a cylinder body (1) and a piston rod (2) slidably inserted into the inner side of the cylinder body (1) from the front end surface, the piston rod (2) being provided with a piston (3), the piston (3) being set in the cylinder body (1), characterized in that: Symmetrical buffer groups are provided at both ends of the cylinder body (1), the buffer group comprising a first buffer assembly (4) for buffering the piston (3), and the buffer assembly further comprising a second buffer assembly (5) for buffering the first buffer assembly (4).
2. The motion control cylinder according to claim 1, characterized in that: A first limiting hole (6) is formed at the end of the cylinder body (1); the first buffer assembly (4) comprises a first buffer plate (7); a first limiting rod (8) corresponding to the first limiting hole (6) is provided on one side of the first buffer plate (7); a first elastic member (9) is provided at the end of the cylinder body (1); the first elastic member (9) has elastic potential energy for pushing the first buffer plate (7) close to the piston (3).
3. The motion control cylinder according to claim 2, characterized in that: The second buffer assembly (5) comprises a second buffer plate (10), a second limiting rod (11) is arranged on the second buffer plate (10), a second limiting hole (12) corresponding to the second limiting rod (11) is also opened at the end of the cylinder body (1), a second elastic member (13) is arranged in the second limiting hole (12), and the second elastic member (13) has elastic potential energy for pushing the second buffer plate (10) to slide towards the first buffer plate (7).
4. The motion control cylinder according to claim 3, characterized in that: The second buffer plate (10) is provided with a through hole (14) corresponding to the first limit rod (8), the first limit rod (8) is provided with a limit block (15), the limit block (15) is arranged on a side of the second buffer plate (10) away from the first buffer plate (7), and the first elastic member (9) corresponds to the limit block (15).