Two-stage supercharged sealed cylinder drive mechanism

Abstract

The utility model discloses two -stage pressurization sealing air cylinder drive mechanism relates to air cylinder technical field, including the casing, the inside of casing is provided with two -stage pressurization mechanism for realizing pressure multiplication, and two -stage pressurization mechanism includes: the pressurization execution unit is arranged in the inside of casing, and including first piston and second piston, and first piston and second piston constitute by coaxial series connection layout, and first piston and second piston form the pressurization chamber, and realize pressure multiplication through the area difference, the sealing adjustment unit is arranged in the inside of pressurization execution unit, and is used for realizing the needle body length fine adjustment, and the pressurization chamber is formed through the first piston and second piston of coaxial series connection layout, realizes pressure multiplication using the cross -sectional area difference of two pistons, solves the problem of traditional air cylinder drive mechanism pressure output deficiency.

Description

Technical Field

[0001] This utility model relates to the field of cylinder technology, specifically a two-stage pressurized sealed cylinder drive mechanism. Background Technology

[0002] The cylinder is the core actuator in the pneumatic transmission system. Its essence is to convert the pressure energy of compressed air into mechanical energy to drive the load to achieve linear reciprocating motion, oscillating motion or rotational motion.

[0003] According to the patent titled "A Cylinder Drive Mechanism" (Patent Publication No.: CN214197152U, Patent Publication Date: 2021-09-14), it includes a cylinder, a mounting plate, a lateral movement mechanism, and a conversion mechanism. The cylinder is mounted on the mounting plate. The lateral movement mechanism includes a rotating guide shaft and a slide mounted thereon. The rotating guide shaft is mounted on the mounting plate, and the cylinder is connected to the slide, driving the slide to move linearly on the rotating guide shaft. The conversion mechanism includes a cam follower, a rotating guide groove, and a rotating seat. One end of the cam follower is fixed to the slide, and the other end passes through the strip groove of the rotating guide groove, allowing it to rotate. The rotating guide groove is connected to the rotating seat mounted on the mounting plate, enabling it to rotate. This mechanism converts the linear motion of the cylinder into rotational motion smoothly through the sliding of the cam follower in the guide groove. It has a simple structure, low cost, and only requires controlling the on / off state of a solenoid valve to achieve control, overcoming the disadvantages of using a servo motor or a rotary cylinder to drive a turntable to rotate 90 degrees via gears.

[0004] Based on the above-mentioned existing technology, the existing cylinder drive mechanism still has the following problems: the existing cylinder drive mechanism usually uses a single-stage cylinder, but the single-stage cylinder will have the problem of insufficient pressure output. Therefore, this utility model provides a two-stage pressurized sealed cylinder drive mechanism. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a two-stage pressurized sealing cylinder drive mechanism, which solves the following problems that existing two-stage pressurized sealing cylinder drive mechanisms still have: existing cylinder drive mechanisms usually use single-stage cylinders, but single-stage cylinders will have the problem of insufficient pressure output.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a two-stage pressurized sealed cylinder drive mechanism, including a housing, wherein a two-stage pressurization mechanism is provided inside the housing to achieve pressure multiplication, and the two-stage pressurization mechanism includes:

[0007] The pressure boosting unit is located inside the housing and includes a first piston and a second piston. The first piston and the second piston are arranged in a coaxial series configuration and form a pressure boosting chamber. Pressure is multiplied by the difference in area.

[0008] The sealing adjustment unit is located inside the pressure boosting unit and is used to fine-tune the needle length.

[0009] Preferably, the booster actuator further includes a cylinder head that is bolted to the inside of the housing, a cylinder liner that is fixedly installed at the bottom of the cylinder head, and a first piston and a second piston that are disposed inside the cylinder liner.

[0010] Preferably, the first piston and the second piston are connected by a threaded rotatable connection to achieve coaxial fixation between the first piston and the second piston.

[0011] Preferably, a support ring is fixedly installed inside the cylinder liner, and the support ring is located at the axial end of the second piston to limit the piston stroke.

[0012] Preferably, a first sealing ring is fixedly installed on the outer side of the first piston, a second sealing ring is fixedly installed on the outer side of the second piston, and a third sealing ring is fixedly installed on the inner side of the cylinder liner.

[0013] Preferably, the sealing adjustment unit includes a valve needle installed in the inner cavity of a first piston, an adjustment shim installed below the valve needle, and a piston screw rotatably installed on the internal thread of the first piston for fixing the position of the valve needle and the adjustment shim.

[0014] This utility model provides a two-stage pressurized sealed cylinder drive mechanism. Compared with the prior art, it has the following advantages:

[0015] 1. This dual-stage pressurized sealed cylinder drive mechanism forms a pressurization chamber through a first piston and a second piston arranged in a coaxial series. The pressure is multiplied by utilizing the difference in cross-sectional area between the two pistons, which solves the problem of insufficient pressure output in traditional cylinder drive mechanisms.

[0016] 2. This dual-stage pressurized sealed cylinder drive mechanism features a sealing adjustment unit nested within the pressurization execution unit. Through the cooperation of the valve needle and adjusting shims, combined with the threaded fixation of the piston screw, the valve needle length can be precisely adjusted to adapt to different operating conditions. The first sealing ring 217, the second sealing ring 218, and the third sealing ring 219 respectively cover the outer sides of the first and second pistons and the inner side of the cylinder liner, forming a multi-stage dynamic sealing barrier. This effectively prevents high-pressure gas leakage and improves the sealing durability of the mechanism during long-term, high-frequency operation. Attached Figure Description

[0017] Figure 1 This is a right-side perspective view of the structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3This is a partially disassembled three-dimensional structural diagram of the present invention;

[0020] Figure 4 This is a partial cross-sectional perspective view of the present invention.

[0021] In the diagram: 1-Housing, 2-Two-stage supercharging mechanism, 21-Supercharging actuator, 211-Cylinder head, 212-Cylinder liner, 213-First piston, 214-Second piston, 215-Support ring, 216-Supercharging chamber, 217-First sealing ring, 218-Second sealing ring, 219-Third sealing ring, 22-Sealing adjustment unit, 221-Valve needle, 222-Adjusting shim, 223-Piston screw, 3-Bolt. 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] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A two-stage pressurized sealed cylinder drive mechanism includes a housing 1, inside which a two-stage pressurization mechanism 2 is provided for achieving pressure multiplication. The two-stage pressurization mechanism 2 includes:

[0025] The pressurization execution unit 21 is located inside the housing 1 and includes a first piston 213 and a second piston 214. The first piston 213 and the second piston 214 are arranged in a coaxial series configuration and form a pressurization chamber 216, which achieves pressure multiplication through the area difference.

[0026] The sealing adjustment unit 22 is located inside the pressure boosting execution unit 21 and is used to achieve fine adjustment of the needle length.

[0027] In this embodiment, the boosting execution unit 21 also includes a cylinder head 211 fixedly installed inside the housing 1 by bolts 3. A cylinder liner 212 is fixedly installed at the bottom of the cylinder head 211, and the first piston 213 and the second piston 214 are disposed inside the cylinder liner 212.

[0028] In this embodiment, the first piston 213 and the second piston 214 are connected by a threaded rotation, so as to achieve coaxial fixation between the first piston 213 and the second piston 214.

[0029] Threaded connections eliminate assembly clearance between pistons, preventing leakage or wear caused by misalignment during pressurization.

[0030] In this embodiment, a support ring 215 is fixedly installed inside the cylinder liner 212, and the support ring 215 is located at the axial end of the second piston 214 to limit the piston stroke.

[0031] A support ring 215 is installed inside the cylinder liner 212 and located at the axial end of the second piston 214 to limit the piston stroke.

[0032] In this embodiment, a first sealing ring 217 is fixedly installed on the outer side of the first piston 213, a second sealing ring 218 is fixedly installed on the outer side of the second piston 214, and a third sealing ring 219 is fixedly installed on the inner side of the cylinder liner 212.

[0033] A first sealing ring 217 is provided on the outside of the first piston 213, a second sealing ring 218 is provided on the outside of the second piston 214, and a third sealing ring 219 is provided on the inside of the cylinder liner 212. The triple ring seal forms a gradient barrier to block gas leakage along the gap between the first piston 213, the second piston 214 and the cylinder liner 212.

[0034] In this embodiment, the sealing adjustment unit 22 includes a valve needle 221 installed in the inner cavity of the first piston 213, and an adjustment shim 222 installed below the valve needle 221. The piston screw 223 is rotatably installed on the internal thread of the first piston 213 to fix the position of the valve needle 221 and the adjustment shim 222.

[0035] An adjusting shim 222 is added to the bottom of the valve needle 221 and its position is fixed by the piston screw 223. By replacing the shim with different thicknesses, the valve needle length can be finely adjusted between 1-3mm to adapt to various working conditions.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] During operation, the first piston 213 and the second piston 214 are bolted together and installed inside the cylinder liner 212. The first sealing ring 217, the second sealing ring 218 and the third sealing ring 219 are respectively installed on the outside of the first piston 213 and the second piston 214 and on the inside of the cylinder liner 212. The valve needle 221 is inserted into the inside of the first piston 213 and the second piston 214, and an adjusting shim 222 is installed at the bottom of the valve seat of the valve needle 221. The cylinder head 211 is installed inside the housing 1 by bolts 3. The pressure is multiplied by the pressure chamber 216 formed by the first piston 213 and the second piston 214 located inside the cylinder liner 212 due to the area difference.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-stage pressurized sealed cylinder drive mechanism, comprising a housing (1), characterized in that: The housing (1) is equipped with a two-stage pressurization mechanism (2) to achieve pressure multiplication. The two-stage pressurization mechanism (2) includes: The pressure boosting unit (21) is located inside the housing (1) and includes a first piston (213) and a second piston (214). The first piston (213) and the second piston (214) are arranged in a coaxial series configuration. The first piston (213) and the second piston (214) form a pressure boosting chamber (216), which achieves pressure multiplication through the area difference. The sealing adjustment unit (22) is located inside the pressure boosting unit (21) and is used to achieve fine adjustment of the needle length.

2. The dual-stage pressurized sealing cylinder drive mechanism according to claim 1, characterized in that: The boosting actuator (21) also includes a cylinder head (211) fixedly installed inside the housing (1) by bolts (3). A cylinder liner (212) is fixedly installed at the bottom of the cylinder head (211), and the first piston (213) and the second piston (214) are located inside the cylinder liner (212).

3. The dual-stage pressurized sealing cylinder drive mechanism according to claim 1, characterized in that: The first piston (213) and the second piston (214) are connected by a threaded rotation, so as to achieve coaxial fixation between the first piston (213) and the second piston (214).

4. The dual-stage pressurized sealing cylinder drive mechanism according to claim 2, characterized in that: A support ring (215) is fixedly installed inside the cylinder liner (212), and the support ring (215) is located at the axial end of the second piston (214) to limit the piston stroke.

5. The dual-stage pressurized sealing cylinder drive mechanism according to claim 2, characterized in that: A first sealing ring (217) is fixedly installed on the outer side of the first piston (213), a second sealing ring (218) is fixedly installed on the outer side of the second piston (214), and a third sealing ring (219) is fixedly installed on the inner side of the cylinder liner (212).

6. The dual-stage pressurized sealing cylinder drive mechanism according to claim 1, characterized in that: The sealing adjustment unit (22) includes a valve needle (221) installed in the inner cavity of the first piston (213), and an adjustment shim (222) installed below the valve needle (221). A piston screw (223) is rotatably installed on the internal thread of the first piston (213) to fix the position of the valve needle (221) and the adjustment shim (222).

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