A rotary cylinder with tail-end air injection function

Abstract

This utility model relates to the field of cylinder technology and discloses a rotary cylinder with tail-end air injection function. It includes a cylinder body, a piston inside the cylinder body, a cylinder cover attached to the side of the piston, a core inside the cylinder body, a valve body on the outer wall of the core, a valve cover on the side of the valve body, a first deep groove ball bearing, a second deep groove ball bearing inside the cylinder body, and an air intake assembly inside the cylinder body. The air intake assembly includes an air inlet located inside the cylinder body, and an air duct is formed inside the air inlet. This utility model, by integrating the tail-end air injection function, achieves real-time cleaning and airtightness detection of tooling fixtures, effectively preventing the accumulation of machining debris from affecting accuracy, and enabling continuous airflow to detect the sealing status of the fixture, significantly improving the stability of the equipment during use.

Description

Technical Field

[0001] This utility model relates to the field of cylinder technology, and in particular to a rotary cylinder with tail-end air injection function. Background Technology

[0002] A rotary cylinder is a special type of pneumatic actuator that can not only achieve linear reciprocating motion, but also drive the output shaft to rotate (usually 90°, 180° or continuous rotation). Its core function is to convert the energy of compressed air into rotational torque, and it is suitable for automation scenarios that require swinging or rotating motion.

[0003] A search revealed Chinese Patent Publication No. CN210240168U, which discloses a hollow rotary cylinder. The cylinder includes a rotating bushing with a turntable extending radially from its right end. An end cap is sealed on the right end face of the turntable, forming a piston chamber between the end cap and the turntable. A hollow rod is slidably connected within the rotating bushing, and a sealing shaft hole for inserting the right end of the hollow rod is located at the center of the end cap. A piston plate is radially arranged on the circumferential side of the hollow rod, dividing the piston chamber into a left piston chamber and a right piston chamber within the piston chamber. A pneumatic mechanism is rotatably connected to the rotating bushing on the left side of the turntable, driving the hollow rod to reciprocate left and right within the rotating bushing. This hollow rotary cylinder not only has a reasonable structure but also allows for easy clamping of long shaft-type workpieces using a fixture when used on a machine tool.

[0004] The existing rotary cylinder is a single cylinder and does not have a tail-end air injection function, which makes it impossible to perform airtightness testing and cleaning on the tooling fixture connected to the cylinder output end, further reducing the working efficiency and reliability of the equipment. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a rotary cylinder with tail-end air injection function, aiming to improve the problem that the existing rotary cylinder is only a single cylinder and does not have tail-end air injection function, which leads to reduced working efficiency and reliability of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary cylinder with tail-end air injection function, comprising a cylinder body, a piston disposed inside the cylinder body, a cylinder cover attached to the side of the piston, a core disposed inside the cylinder body, a valve body disposed on the outer wall of the core, a valve cover disposed on the side of the valve body, a first deep groove ball bearing disposed inside the cylinder body, a second deep groove ball bearing disposed inside the cylinder body, and an air intake assembly disposed inside the cylinder body.

[0007] Through the above technical solution: when the rotary cylinder is working, external compressed air enters the cylinder through the air intake assembly, and is further transported to the tooling fixture connected to the output end through the airflow channel. The continuous and stable airflow can effectively blow away impurities such as iron filings and dust accumulated on the surface of the fixture during the processing, keeping the processing area clean. Furthermore, by monitoring changes in airflow pressure, the sealing performance of the fixture can be evaluated in real time, and potential leakage problems can be detected in a timely manner. The integrated design not only ensures the cleanliness of the processing environment, but also realizes real-time monitoring of the fixture status, thereby improving the operational reliability and processing efficiency of the equipment. At the same time, the sealing structure of the entire airflow system has been optimized to ensure that the normal rotation function of the cylinder is not affected during the testing process.

[0008] As a further description of the above technical solution: The air intake assembly includes an air intake port, which is located inside the cylinder block, and an air duct is provided inside the air intake port.

[0009] The above technical solution involves the air intake and air duct working together to deliver external air into the cylinder.

[0010] As a further description of the above technical solution: The cylinder head has multiple bolt holes inside, and multiple bolts are installed inside the cylinder head, with the bolts located inside the bolt holes.

[0011] The above technical solution allows for the tight fixing of the cylinder head with bolts, while also facilitating the disassembly of the cylinder head by maintenance personnel in the future.

[0012] As a further description of the above technical solution: The core has multiple bolt holes, and multiple bolts are installed inside the core, with the bolts located inside the bolt holes.

[0013] Through the above technical solution, the cylinder core achieves rapid positioning and reliable fixation through multiple standardized bolt holes and matching high-strength bolts. By adopting a symmetrical bolt layout, it is ensured that the cylinder core receives uniform tightening force inside the cylinder body, avoiding misalignment during installation. The precise fit between the bolts and bolt holes ensures alignment accuracy during assembly and facilitates disassembly operations during later maintenance. When it is necessary to inspect or replace internal components, the cylinder core can be removed individually simply by loosening the corresponding bolts, without disassembling the entire cylinder structure, simplifying the maintenance process. While ensuring structural strength, it also takes into account assembly efficiency and maintenance convenience.

[0014] As a further description of the above technical solution: The cylinder head and the core are circular in shape.

[0015] The above technical solution employs a circular symmetrical structure design for the cylinder head and cylinder plug. This geometry eliminates the need for specific angle alignment during installation, allowing operators to quickly assemble the two components. The circular mating surfaces achieve circumferential force balance through evenly distributed connectors, ensuring structural stability after assembly. In actual installation, the circular contour eliminates directional limitations, simplifying alignment and adjustment steps. Even at different installation angles, it ensures complete contact of the sealing surfaces. This design reduces assembly difficulty, enabling maintenance personnel to efficiently disassemble and assemble the cylinder head and cylinder plug while maintaining the sealing performance of the connection. The standardized design of the circular interface also facilitates the standardization and interchangeability of parts.

[0016] As a further description of the above technical solution: The end of the cylinder block furthest from the air inlet is used to install tooling fixtures.

[0017] The above technical solution guides external air through the air inlet to blow air onto the tooling fixture, preventing impurities such as iron filings from adhering to the surface of the tooling fixture.

[0018] As a further description of the above technical solution: The valve body is located inside the cylinder.

[0019] The above technical solution allows the cylinder to be used to fix and support the valve body.

[0020] As a further description of the above technical solution: The piston and cylinder head are connected by bolts, and the cylinder head and piston core are connected by bolts.

[0021] The above technical solution improves the efficiency of quick installation, fixing, or disassembly of the cylinder head and cylinder block through bolt design.

[0022] This utility model has the following beneficial effects: 1. In this utility model, by integrating the tail-end air injection function, while maintaining the original rotary drive capability, real-time cleaning and airtightness detection of the tooling fixture are achieved. The internal air intake channel and sealing structure work together to effectively prevent the accumulation of processing debris from affecting accuracy, and can also detect the sealing status of the fixture through continuous airflow, which greatly improves the stability of the equipment during use.

[0023] 2. In this utility model, the circular butt joint design and standardized bolt fixing structure are adopted, which enables the quick disassembly and assembly of core components such as cylinder head and core plug, greatly reducing the maintenance difficulty, reducing the downtime when performing maintenance on rotary cylinder, and improving the working efficiency of rotary cylinder. Attached Figure Description

[0024] Figure 1This is a three-dimensional structural diagram of a rotary cylinder with tail-end air injection function proposed in this utility model. Figure 2 This is a partial structural diagram of the core of a rotary cylinder with tail-end air injection function proposed in this utility model. Figure 3 This is a partial structural diagram of the cylinder head of a rotary cylinder with tail-end air injection function proposed in this utility model. Figure 4 This is a partial structural diagram of the air inlet of a rotary cylinder with tail-end air injection function proposed in this utility model.

[0025] Legend: 1. Cylinder block; 2. Piston; 3. Cylinder head; 4. Core insert; 5. Valve body; 6. Valve cover; 7. Intake assembly; 71. Intake port; 72. Air duct; 8. Bolt hole one; 9. Bolt hole two; 10. Deep groove ball bearing one; 11. Deep groove ball bearing two. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a rotary cylinder with tail-end air injection function, including a cylinder body 1, a piston 2 is provided inside the cylinder body 1, a cylinder cover 3 is attached to the side of the piston 2, a core 4 is provided inside the cylinder body 1, a valve body 5 is provided on the outer wall of the core 4, a valve cover 6 is provided on the side of the valve body 5, a deep groove ball bearing 10 is provided inside the cylinder body 1, a deep groove ball bearing 11 is provided inside the cylinder body 1, and an air intake assembly 7 is provided inside the cylinder body 1. Specifically, after the tooling fixture is installed at the output end of the cylinder 1, when the cylinder 1 is started, the piston 2 reciprocates inside the cylinder 1, thereby driving the tooling fixture to complete the machining action. At the same time, the air intake assembly 7 delivers compressed air to the tooling fixture through the air intake port 71 and the air duct 72, forming a continuous airflow. This airflow can remove the debris generated during machining in a timely manner, keeping the fixture clean; on the other hand, by monitoring the air pressure change, the sealing performance of the tooling fixture can be detected. The plug 4 cooperates with the valve body 5 and the valve cover 6 to ensure airtightness, and the deep groove ball bearing 10 and the deep groove ball bearing 11 ensure smooth movement. This integrated design enables the cylinder 1 to have cleaning and detection functions in addition to the driving function, improving the machining reliability. The cylinder cover 3 is fixed by bolt hole 8, and the plug 4 is fixed by bolt hole 9, which facilitates maintenance and repair.

[0028] Reference Figure 1 The intake assembly 7 includes an intake port 71, which is located inside the cylinder block 1, and an air duct 72 is provided inside the intake port 71. Specifically, the air inlet 71 and the air duct 72 form a through airflow channel. When external compressed air enters through the air inlet 71, it is directionally transported through the air duct 72 to the tooling fixture connected to the output end of the cylinder 1. During the air tightness test, the continuous and stable airflow pressure acts on the sealing surface of the tooling fixture. By monitoring the changes in the air pressure sensor data, the sealing performance of the fixture can be accurately determined.

[0029] Reference Figure 1 , Figure 3 and Figure 4 The cylinder head 3 has multiple bolt holes 8 inside, and multiple bolts are installed inside the cylinder head 3. The bolts are installed inside the bolt holes 8. The core 4 has multiple bolt holes 9 inside, and multiple bolts are installed inside the core 4. The cylinder head 3 and the core 4 are circular in shape. The end of the cylinder body 1 away from the air intake 71 is used to install tooling fixtures. The valve body 5 is installed inside the cylinder body 1. The piston 2 and the cylinder head 3 are connected by bolts, and the cylinder head 3 and the core 4 are connected by bolts. Specifically, the bolt holes 1-8 inside the cylinder head 3 and 2-9 inside the core block 4 adopt a standardized size design. High-strength bolts are used to achieve precise positioning and reliable fixation of the two. This modular connection method allows the cylinder head 3 and core block 4 to be disassembled independently. During maintenance, it is not necessary to disassemble the cylinder block 1 as a whole. When it is necessary to maintain the intake assembly 7 or replace the deep groove ball bearing 10 or deep groove ball bearing 11, the cylinder head 3 or core block 4 can be quickly separated by loosening the corresponding bolts, which greatly shortens the maintenance time. The symmetrical layout of bolt holes 1-8 and 2-9 ensures uniform force distribution. At the same time, the circular design of the cylinder head 3 and core block 4 facilitates the centering adjustment during installation. This structural design not only ensures the assembly accuracy but also improves the convenience of equipment maintenance.

[0030] Working principle: When the rotary cylinder is working, external gas enters through the air inlet 71 of the air intake component 7 and is transported to the inside of the cylinder body 1 through the air duct 72. The piston 2 reciprocates under the action of air pressure, thereby driving the tooling fixture installed at the output end to complete the processing action. At the same time, the airflow of the air intake component 7 can clean the tooling fixture by blowing air to prevent impurities such as iron filings from adhering. The air tightness test is achieved by continuous air supply. The core 4, valve body 5, and valve cover 6 cooperate to form a sealing structure to ensure that the gas does not leak. Deep groove ball bearing 10 and deep groove ball bearing 2 support the moving parts inside the cylinder body 1 to ensure rotational stability. Thus, the effect of simultaneously controlling the fixture work and completing the air tightness test can also improve production efficiency and equipment reliability. The cylinder head 3 is fixed to the bolts via bolt hole 8, and the cylinder core 4 is fixed to the bolts via bolt hole 9. The circular design facilitates alignment and installation by the operator. The piston 2 is connected to the cylinder head 3, and the cylinder head 3 is connected to the cylinder core 4 via bolts, forming a modular structure. This allows for quick disassembly and assembly of the cylinder components, facilitating maintenance or replacement of damaged parts.

[0031] 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 rotary air cylinder with tail-end air injection function, comprising a cylinder body (1), characterized in that: The cylinder body (1) is equipped with a piston (2), and a cylinder head (3) is attached to the side of the piston (2). The cylinder body (1) is equipped with a core (4), and a valve body (5) is provided on the outer wall of the core (4). A valve cover (6) is provided on the side of the valve body (5). The cylinder body (1) is equipped with a first deep groove ball bearing (10), and a second deep groove ball bearing (11). The cylinder body (1) is equipped with an intake assembly (7). The air intake assembly (7) includes an air intake (71), which is located inside the cylinder block (1), and an air duct (72) is provided inside the air intake (71).

2. The swiveling air cylinder with a tail-end air injection function according to claim 1, characterized in that: The cylinder head (3) has multiple bolt holes (8) inside, and multiple bolts are provided inside the cylinder head (3). The bolts are located inside the bolt holes (8).

3. The swiveling air cylinder with a tail-end air injection function according to claim 1, characterized in that: The core (4) has multiple bolt holes (9) inside, and multiple bolts are installed inside the core (4). The bolts are installed inside the bolt holes (9).

4. The swash plate cylinder with a tail end gas injection function according to claim 1, characterized in that: The cylinder head (3) and the core (4) are circular in shape.

5. The swiveling air cylinder with a tail-end air injection function according to claim 1, characterized in that: The end of the cylinder (1) away from the air inlet (71) is used to install tooling fixtures.

6. The swash plate cylinder with a tail end gas injection function according to claim 1, characterized in that: The valve body (5) is located inside the cylinder body (1).

7. The swiveling air cylinder with a tail-end air injection function according to claim 2, characterized in that: The piston (2) and cylinder head (3) are connected by bolts, and the cylinder head (3) and piston core (4) are connected by bolts.

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