Pneumatic actuator with positioning mechanism

Abstract

The utility model relates to automatic execution technical field discloses pneumatic actuator with positioning mechanism, including pneumatic subassembly, the pneumatic subassembly includes pneumatic actuator body, the output fixedly connected with push rod of pneumatic actuator body, the outer surface fixedly connected with the push plate of push rod, the inside of push plate is established and has embedded groove. The utility model discloses the mounting seat is with the preset interval screw thread connection in the mounting screw hole of mounting frame, and the linkage is formed to the second spring damper in the locking seat and the moving seat of combination rotating plate drive, fixed seat, realizes the conversion of rotation movement to linear displacement, and the structure makes the locking seat when embedding moving seat, through the slope extrusion forces the second spring damper compression, and after reset utilizes the inverted hook engagement and realizes self -locking, thereby accurate restriction push plate's initial position, ensures that pneumatic actuator does not work when push plate stable stop in the fixed gear defined by the array of screw hole, and the position reliability under the equipment shutdown state is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of automated execution technology, and in particular to a pneumatic actuator with a positioning mechanism. Background Technology

[0002] With the rapid development of industrial automation and intelligent manufacturing technologies, in the process of fluid control in process industries, it is necessary to perform high-precision switching or continuous adjustment of the flow rate, pressure and direction of gas or liquid, which requires the use of pneumatic actuators. In practical use, pneumatic actuators with similar structures still have many defects. For example, traditional pneumatic actuators rely on electronic sensor feedback to achieve position control, and are prone to signal distortion in harsh environments such as high temperature and high humidity. At the same time, traditional pneumatic actuators mostly use single-layer rubber shock absorption, which is difficult to cope with high-frequency micro-amplitude vibration. Therefore, it is necessary to design pneumatic actuators with positioning mechanisms. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a pneumatic actuator with a positioning mechanism.

[0004] This utility model is achieved using the following technical solution: a pneumatic actuator with a positioning mechanism, comprising a pneumatic assembly, the pneumatic assembly including a pneumatic actuator body, a push rod fixedly connected to the output end of the pneumatic actuator body, a push plate fixedly connected to the outer surface of the push rod, and an embedded groove provided inside the push plate, further comprising: The positioning assembly includes a mounting bracket fixedly connected to the outer surface of the pneumatic actuator body, a buffer plate slidably mounted inside the mounting bracket via a limiting rod, and an embedded block movably mounted at the front end of the buffer plate via a first spring damper. A locking assembly includes a mounting base threaded to the outer surface of a mounting bracket, and a locking seat rotatably connected to the interior of the mounting base, the locking seat being embedded inside the movable base.

[0005] As a further improvement to the above solution, a limiting rod is fixedly connected inside the mounting bracket, and a mounting threaded hole is provided on the outer surface of the mounting bracket.

[0006] Through the above technical solution, the array-type threaded hole design provides a standardized interface for the synchronous locking of multiple sets of mounting seats, ensuring the consistency of the action of each locking seat and eliminating the risk of push plate misalignment caused by assembly errors from the source.

[0007] As a further improvement to the above solution, a movable seat is slidably mounted on the outer surface of the limiting rod, a buffer plate is fixedly connected to the outer surface of the movable seat, and a first spring damper is fixedly connected to the outer surface of the buffer plate.

[0008] The above technical solution can convert linear motion into controlled axial displacement, while the buffer plate absorbs the reverse impact energy, effectively suppressing the impact of high-frequency vibration on positioning accuracy.

[0009] As a further improvement to the above solution, an embedded block is fixedly connected to the front end of the first spring damper, and the embedded block matches the embedded groove.

[0010] Through the above technical solution, the pre-pressure provided by the first spring damper ensures that the embedded block remains in a protruding state under normal conditions, and only retracts to give way under a specific thrust threshold. This design decomposes the motion of the push plate into multiple discrete gears, which significantly improves the repeatability of the opening control.

[0011] As a further improvement to the above solution, the outer surface of the limiting rod is threadedly connected to a mounting base, and the mounting base is rotatably connected to a rotating plate.

[0012] Through the above technical solution, the structure allows operators to achieve axial displacement of the locking seat by means of tools or manual rotation, which greatly reduces the maintenance difficulty under complex working conditions.

[0013] As a further improvement to the above solution, a locking seat is fixedly connected to the outer surface of the rotating plate, a second spring damper is fixedly connected to the inside of the movable seat, and a fixing seat is fixedly connected to the outer surface of the second spring damper.

[0014] With the above technical solution, when the locking seat is inserted, its inclined surface forces the fixed seat to compress the spring. After it is fully embedded, the elastic force generated by the spring reset will firmly press the two together, forming a stable structure in which the greater the overtravel, the stronger the locking force.

[0015] As a further improvement to the above solution, the fixed seat is slidably installed inside the movable seat, and the fixed seat and the locking seat are matched.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention achieves the conversion of rotational motion into linear displacement by connecting the mounting base to the mounting threaded holes of the mounting frame at a preset interval, and by linking the rotating plate with the locking base, the second spring damper in the moving base, and the fixed base. When the locking base is embedded in the moving base, the second spring damper is compressed by the inclined surface, and after resetting, it is self-locked by the hook engagement, thereby precisely limiting the initial position of the push plate and ensuring that the push plate is stably stopped at the fixed position defined by the threaded hole array when the pneumatic actuator is not working, which significantly improves the position reliability of the equipment in the shutdown state.

[0017] When the pneumatic actuator body drives the push rod to push the push plate, the embedded groove and the embedded block controlled by the first spring damper on the surface of the buffer plate interact. In the initial stage, the embedded block protrudes and embeds into the groove, dividing the push plate stroke into multiple fixed positions. When the thrust exceeds the resistance of the first spring damper, the embedded block retracts, allowing the push plate to move in steps. During this process, the sliding guide of the limit rod to the moving seat and the absorption of vibration energy by the buffer plate jointly ensure the stability of the positioning mechanism under dynamic load, avoid displacement deviation caused by high-frequency vibration, and realize precise segmented control of the push plate movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the positioning component of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the positioning component structure of this utility model.

[0019] Explanation of key symbols: 1. Pneumatic assembly; 101. Pneumatic actuator body; 102. Push rod; 103. Push plate; 104. Embedded groove; 2. Positioning assembly; 201. Mounting bracket; 202. Limiting rod; 203. Mounting threaded hole; 204. Moving seat; 205. Buffer plate; 206. First spring damper; 207. Embedded block; 3. Locking assembly; 301. Mounting seat; 302. Rotating plate; 303. Locking seat; 304. Second spring damper; 305. Fixed seat. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Example: Please combine Figure 1-5 The pneumatic actuator with a positioning mechanism in this embodiment includes a pneumatic assembly 1, which includes a pneumatic actuator body 101. A push rod 102 is fixedly connected to the output end of the pneumatic actuator body 101. A push plate 103 is fixedly connected to the outer surface of the push rod 102. An embedding groove 104 is provided inside the push plate 103. The actuator also includes: Positioning component 2 includes a mounting bracket 201 fixedly connected to the outer surface of the pneumatic actuator body 101. A buffer plate 205 is slidably mounted inside the mounting bracket 201 via a limiting rod 202. An embedded block 207 is movably mounted at the front end of the buffer plate 205 via a first spring damper 206. Locking component 3 includes a mounting base 301 threadedly connected to the outer surface of mounting bracket 201, and a locking seat 303 rotatably connected inside the mounting base 301, the locking seat 303 being embedded inside the movable base 204.

[0022] The mounting bracket 201 has an internal fixed connection of a limiting rod 202, and the outer surface of the mounting bracket 201 has a mounting threaded hole 203.

[0023] A movable seat 204 is slidably mounted on the outer surface of the limiting rod 202. A buffer plate 205 is fixedly connected to the outer surface of the movable seat 204. A first spring damper 206 is fixedly connected to the outer surface of the buffer plate 205.

[0024] The front end of the first spring damper 206 is fixedly connected to an embedded block 207, which is matched with the embedded groove 104.

[0025] The outer surface of the limit rod 202 is threadedly connected to the mounting base 301, and the mounting base 301 is rotatably connected to the rotating plate 302.

[0026] When the pneumatic actuator body 101 drives the push rod 102 to push the push plate 103, the embedding groove 104 approaches the embedding block 207 axially. In the initial stage, the first spring damper 206 keeps the embedding block 207 protruding from the surface of the buffer plate 205, so that it is accurately embedded in the embedding groove 104 of the push plate 103, thereby dividing the stroke of the push plate 103 into multiple fixed positions determined by the spacing of the mounting threaded holes 203.

[0027] A locking seat 303 is fixedly connected to the outer surface of the rotating plate 302, a second spring damper 304 is fixedly connected to the inside of the moving seat 204, and a fixing seat 305 is fixedly connected to the outer surface of the second spring damper 304.

[0028] The fixed seat 305 is slidably installed inside the movable seat 204, and the fixed seat 305 is matched with the locking seat 303.

[0029] When the rotating plate 302 rotates around the internal axis of the mounting base 301, the locking seat 303 fixed on its outer surface deflects synchronously and inserts into the moving base 204. At this time, the inclined surface at the front end of the locking seat 303 presses against the fixed base 305, forcing the second spring damper 304 to compress and deform. When the locking seat 303 is fully embedded in the moving base 204, the second spring damper 304 releases its elastic potential energy to push the fixed base 305 to reset, so that its barb structure engages with the end of the locking seat 303, forming a self-locking state.

[0030] The implementation principle of the pneumatic actuator with positioning mechanism in this embodiment is as follows: By threading the mounting base 301 to the mounting threaded hole 203 on the outer surface of the mounting frame 201, the precise positioning of multiple mounting bases 301 is achieved by using an array of threaded holes with a preset spacing. When the rotating plate 302 rotates around the internal axis of the mounting base 301, the locking base 303 fixed on its outer surface deflects synchronously and inserts into the moving base 204. At this time, the inclined surface at the front end of the locking base 303 presses against the fixed base 305, forcing the second spring damper 304 to compress and deform. When the locking base 303 is fully embedded in the moving base 204, the second spring damper 304 releases elastic potential energy to push the fixed base 305 to reset, so that its barb structure engages with the end of the locking base 303, forming a self-locking state. This process converts the rotational motion into linear displacement through mechanical linkage, ensuring that when the pneumatic actuator body 101 is not working, the push plate 103 is restricted to the initial position determined by the spacing of the mounting threaded holes 203. When the pneumatic actuator body 101 drives the push rod 102 to push the push plate 103, the embedding groove 104 moves axially closer to the embedding block 207. In the initial stage, the first spring damper 206 keeps the embedding block 207 protruding from the surface of the buffer plate 205, so that it is accurately embedded in the embedding groove 104 of the push plate 103, thereby dividing the stroke of the push plate 103 into multiple fixed positions determined by the spacing of the mounting threaded holes 203. When the thrust continues to increase to exceed the preset resistance of the first spring damper 206, the embedding block 207 is compressed and retracted, allowing the push plate 103 to move past the current position. During this process, the sliding guiding effect of the limit rod 202 on the moving seat 204 and the absorption of vibration energy by the buffer plate 205 jointly ensure the dynamic stability of the positioning mechanism.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A pneumatic actuator with a positioning mechanism, comprising a pneumatic assembly (1), the pneumatic assembly (1) comprising a pneumatic actuator body (101), a push rod (102) fixedly connected to the output end of the pneumatic actuator body (101), a push plate (103) fixedly connected to the outer surface of the push rod (102), and an embedding groove (104) provided inside the push plate (103), characterized in that, Also includes: The positioning component (2) includes a mounting bracket (201) fixedly connected to the outer surface of the pneumatic actuator body (101). A buffer plate (205) is slidably mounted inside the mounting bracket (201) via a limiting rod (202). An embedded block (207) is movably mounted at the front end of the buffer plate (205) via a first spring damper (206). The locking assembly (3) includes a mounting base (301) threaded to the outer surface of the mounting bracket (201), and a locking seat (303) rotatably connected inside the mounting base (301), the locking seat (303) being embedded inside the movable base (204).

2. The pneumatic actuator with a positioning mechanism as described in claim 1, characterized in that: The mounting bracket (201) is internally fixedly connected to a limiting rod (202), and the outer surface of the mounting bracket (201) is provided with a mounting thread hole (203).

3. The pneumatic actuator with a positioning mechanism as described in claim 2, characterized in that: A movable seat (204) is slidably mounted on the outer surface of the limiting rod (202), a buffer plate (205) is fixedly connected to the outer surface of the movable seat (204), and a first spring damper (206) is fixedly connected to the outer surface of the buffer plate (205).

4. The pneumatic actuator with a positioning mechanism as described in claim 3, characterized in that: The front end of the first spring damper (206) is fixedly connected to an insert block (207), which is matched with the insert groove (104).

5. The pneumatic actuator with a positioning mechanism as described in claim 2, characterized in that: The outer surface of the limiting rod (202) is threadedly connected to the mounting base (301), and the interior of the mounting base (301) is rotatably connected to the rotating plate (302).

6. The pneumatic actuator with a positioning mechanism as described in claim 5, characterized in that: A locking seat (303) is fixedly connected to the outer surface of the rotating plate (302), a second spring damper (304) is fixedly connected to the inside of the moving seat (204), and a fixing seat (305) is fixedly connected to the outer surface of the second spring damper (304).

7. The pneumatic actuator with a positioning mechanism as described in claim 6, characterized in that: The fixed seat (305) is slidably installed inside the movable seat (204), and the fixed seat (305) is matched with the locking seat (303).

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