Advanced noise reduction air cylinder

Abstract

The utility model relates to the related field of air cylinders, in particular to an advanced noise reduction air cylinder which comprises a cylinder body, a piston, a piston rod, a connecting air port, an air cylinder cover, a convex body, a buffer film, a fixing frame, a groove, a buffer ball, a spring, a sound absorption assembly and the like. By arranging the buffering ball, the buffering rubber piece and the sound absorption assembly, when the piston moves to the tail end of the cylinder body, the buffering ball is matched with the spring to provide buffering for the piston, the piston can decelerate more stably, the buffering rubber piece provides further buffering for the piston, the impact force of the piston on the cylinder body is reduced, and the service life of the piston is prolonged. The noise generated when the piston impacts the cylinder body is reduced, and part of noise energy at the connecting air port is absorbed and consumed through the sound absorption assembly, so that the noise generated when the air cylinder works is reduced, improvement of the working environment is facilitated, physical and psychological health is facilitated, and the practicability of the air cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the field of cylinders, in particular to an advanced noise-reducing cylinder. Background Art

[0002] The cylinder is a device that converts the pressure energy of compressed gas into mechanical energy and is a key actuator in the pneumatic system. Its working principle is based on Newton's third law (action and reaction). When the compressed gas enters the cylinder, it pushes the piston to move, thereby generating linear reciprocating motion or swinging motion, and doing work externally.

[0003] When the piston in the cylinder moves to the end, it is easy to collide with the cylinder body, thereby generating noise. In addition, when the gas flows at the air intake and exhaust of the cylinder, it may generate noise due to air pressure shock or because of the loose seal at the connection between the air pipe and the cylinder. These noises can easily have an adverse effect on people's working environment and physical and mental health, and reduce the practicality of the cylinder. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides an advanced noise reduction cylinder to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an advanced noise reduction cylinder, comprising a cylinder body, a piston slidably mounted in the cylinder body, a piston rod mounted on the piston and movably passing through the cylinder body, a connecting gas port for introducing gas is respectively opened at the front and rear ends of the top of the cylinder body, and a cylinder cover is fixedly mounted at the rear end of the cylinder body, and a convex body is arranged at the end of the piston away from the piston rod;

[0006] A sound absorbing component for assisting in silencing is arranged in the connecting air port, and a buffering rubber sheet is arranged at one end of the cylinder head facing the convex body;

[0007] The convex body movably extends into a fixed frame arranged on the cylinder head. The inner wall of the fixed frame is provided with a groove, in which a slidable buffer ball is built. One end of the buffer ball contacts the side surface of the convex body, and the other end of the buffer ball away from the convex body is connected to the inner side of the groove through a spring.

[0008] Preferably, the protrusion is in the shape of a frustum that tapers from front to back.

[0009] Preferably, a group of grooves, buffer balls and springs are respectively provided at the upper and lower ends of the inner side of the fixing frame.

[0010] Preferably, the sound absorbing component includes a threaded groove opened at the top of the inner side of the connecting air port, a threaded cylinder threadedly matched with the inner wall of the threaded groove, and an inner sleeve fixed to the inner ring of the threaded cylinder, the inner ring of the threaded cylinder is provided with an annular groove completely covered by the outer surface of the inner sleeve, the inner sleeve is provided with a plurality of sound absorbing holes which are connected with the inner side of the annular groove, and the annular groove is filled with sound absorbing cotton.

[0011] Preferably, the outer tops of the threaded barrel and the inner sleeve are provided with threaded holes that penetrate each other, and the threaded holes are staggered with the annular groove.

[0012] Preferably, the inner sleeve is flush with the inner circle of the connecting air port.

[0013] Preferably, the sound absorbing holes on the inner sleeve are distributed in an array with equal spacing.

[0014] Preferably, two sound absorbing components are provided, and the two sound absorbing components correspond one to one to the two connecting air ports.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a buffer ball, a buffer film and a sound absorbing component. When the piston moves to the end of the cylinder body, the buffer ball cooperates with the spring to provide buffering for the piston, which is convenient for the piston to decelerate more smoothly. The buffer film provides further buffering for the piston, reduces the impact force of the piston on the cylinder body, thereby reducing the noise generated by the piston impacting the cylinder body. The sound absorbing component absorbs and consumes part of the noise energy at the connecting air port, thereby reducing the noise generated when the cylinder is working, which is beneficial to improving the working environment, promoting physical and mental health, and improving the practicality of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the piston moving to the end of the utility model;

[0018] Figure 2 It is a schematic diagram of the side cross-sectional structure of the sound absorbing component of the utility model;

[0019] Figure 3 It is a schematic diagram of the distribution structure of the sound absorbing components of the utility model.

[0020] Among them: cylinder body -1, piston -2, piston rod -3, connecting air port -4, cylinder head -5, convex body -6, buffer film -7, fixing frame -8, groove -9, buffer ball -10, spring -11, sound absorbing component -12, threaded groove -1201, threaded tube -1202, inner sleeve -1203, annular groove -1204, sound absorbing cotton -1205, sound absorbing hole -1206. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] like Figure 1 As shown, the utility model provides an advanced noise reduction cylinder, comprising a cylinder body 1, a piston 2 slidably mounted in the cylinder body 1, a piston rod 3 mounted on the piston 2 and movably passing through the cylinder body 1, a connecting gas port 4 for introducing gas is respectively provided at the front and rear ends of the top of the cylinder body 1, and a cylinder cover 5 is fixedly mounted at the rear end of the cylinder body 1;

[0023] When in use, the cylinder is placed in an appropriate position as a whole, and the two connecting ports 4 are respectively connected to the external intake pipe and exhaust pipe. When the intake pipe and the exhaust pipe are connected to the inner side of the connecting port 4, they need to first pass through the inner sleeve 1203. After the intake pipe and the exhaust pipe are installed, the threaded tube 1202 drives the inner sleeve 1203 and the sound-absorbing cotton 1205 to rotate and install them in the threaded groove 1201.

[0024] Then, compressed gas can be input into the air inlet pipe and the exhaust pipe by control, and the compressed gas pushes the piston 2 to move along the inner wall of the cylinder 1, and the piston 2 drives the piston rod 3 to move synchronously, so that the piston rod 3 drives the connected workpiece to move.

[0025] like Figure 1 As shown, in this embodiment, the piston 2 is provided with a protrusion 6 in an integrated structure at one end away from the piston rod 3;

[0026] A sound absorbing component 12 for auxiliary noise reduction is arranged in the connecting air port 4, and a buffer film 7 is pasted on the front end surface of the cylinder head 5;

[0027] The protrusion 6 is movably extended into a fixed frame 8 installed on the front end surface of the cylinder head 5. A groove 9 is vertically opened on the inner wall of the fixed frame 8. A slidable buffer ball 10 is built in the groove 9. One end of the buffer ball 10 is attached to the side surface of the protrusion 6, and the other end of the buffer ball 10 away from the protrusion 6 is connected to the inner side of the groove 9 through a spring 11.

[0028] In this embodiment, the convex body 6 is a truncated cone that gradually shrinks from front to back, so that the convex body 6 can squeeze the buffer ball 10, and the buffer ball 10 squeezes the spring 11 to compress. The buffer ball 10 cooperates with the spring 11 to slow down the return speed of the piston 2, thereby reducing the impact force of the piston 2 on the cylinder 1.

[0029] In this embodiment, a group of grooves 9, buffer balls 10 and springs 11 are respectively provided at the upper and lower ends of the inner side of the fixed frame 8 to provide stable buffering for the piston 2;

[0030] In this embodiment, the buffer ball 10 is made of nylon, which has less friction and produces less friction noise;

[0031] When in use, when the piston 2 moves to the end in the cylinder body 1, it drives the protrusion 6 to enter the fixed frame 8 and contact the buffer ball 10. The protrusion 6 applies pressure to the buffer ball 10, causing the buffer ball 10 to slide along the inner wall of the groove 9 and squeeze the spring 11. The buffer ball 10 applies pressure to the protrusion 6, and the piston 2 is decelerated by the pressure, thereby reducing the impact force of the piston 2 on the cylinder body 1, and further buffering is provided for the piston 2 through the buffer film 7, thereby reducing the noise of the collision between the piston 2 and the cylinder body 1.

[0032] like Figure 2 and Figure 3 As shown, the sound absorbing component 12 in this embodiment includes a threaded groove 1201 vertically opened at the top of the inner side of the connecting air port 4, a threaded cylinder 1202 threadedly matched with the inner wall of the threaded groove 1201, and an inner sleeve 1203 locked and fixed to the inner ring of the threaded cylinder 1202. The inner ring of the threaded cylinder 1202 is provided with an annular groove 1204 completely covered by the outer surface of the inner sleeve 1203, and the inner sleeve 1203 is provided with a plurality of sound absorbing holes 1206 intersecting the inner side of the annular groove 1204. The annular groove 1204 is filled with sound absorbing cotton 1205, and the sound absorbing cotton 1205 can absorb and consume the noise energy at the connecting air port 4.

[0033] In this embodiment, threaded holes are provided on the outer tops of the threaded cylinder 1202 and the inner sleeve 1203, which are interlinked with each other. The threaded holes are staggered with the annular groove 1204, so that bolts of corresponding types can be used to extrude the external air intake pipe and exhaust pipe with the threaded holes, thereby improving the stability of the air intake pipe and exhaust pipe when connected to the connecting port 4 and reducing gas leakage.

[0034] The inner sleeve 1203 is flush with the inner circle of the connecting air port 4, so that the external air intake pipe and the exhaust pipe can pass through the inner sleeve 1203 and connect with the connecting air port 4.

[0035] The sound absorbing holes 1206 on the inner sleeve 1203 are arranged in an array with equal spacing, so that the noise can pass through the sound absorbing holes 1206 and enter the annular groove 1204;

[0036] There are two sound absorbing components 12, and the two sound absorbing components 12 correspond to the two connecting air ports 4 one by one, so as to facilitate the noise reduction process in the two connecting air ports 4;

[0037] During use, when the compressed gas passes through the air intake pipe or the exhaust pipe and enters the connecting air port 4 and generates noise, part of the noise passes through the sound-absorbing hole 1206 and enters the annular groove 1204. The sound-absorbing cotton 1205 in the annular groove 1204 absorbs and consumes part of the noise, thereby reducing the noise pollution when the cylinder is working and improving the practicality of the cylinder. At the same time, it is more advanced than a cylinder without noise reduction treatment.

[0038] The above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An advanced noise reduction cylinder, comprising a cylinder body, a piston slidably mounted in the cylinder body, a piston rod mounted on the piston and movably passing through the cylinder body, a connecting gas port for introducing gas is respectively provided at the front and rear ends of the top of the cylinder body, and a cylinder cover is fixedly mounted at the rear end of the cylinder body; It is characterized in that The piston is provided with a convex body at one end away from the piston rod; A sound absorbing component for assisting in silencing is arranged in the connecting air port, and a buffering rubber sheet is arranged at one end of the cylinder head facing the convex body; The convex body movably extends into a fixed frame arranged on the cylinder head. The inner wall of the fixed frame is provided with a groove, in which a slidable buffer ball is built. One end of the buffer ball contacts the side surface of the convex body, and the other end of the buffer ball away from the convex body is connected to the inner side of the groove through a spring.

2. According to claim 1, an advanced noise reduction cylinder is characterized in that: The convex body is in the shape of a truncated cone which gradually shrinks from front to back.

3. According to claim 1, an advanced noise reduction cylinder is characterized in that: A group of grooves, buffer balls and springs are respectively arranged at the upper and lower ends of the inner side of the fixing frame.

4. The advanced noise reduction cylinder according to claim 1, characterized in that: The sound-absorbing component includes a threaded groove opened at the top of the inner side of the connecting air port, a threaded cylinder threadedly matched with the inner wall of the threaded groove, and an inner sleeve fixed to the inner ring of the threaded cylinder. The inner ring of the threaded cylinder is provided with an annular groove completely covered by the outer surface of the inner sleeve, and the inner sleeve is provided with a plurality of sound-absorbing holes that are connected with the inner side of the annular groove. The annular groove is filled with sound-absorbing cotton.

5. According to claim 4, an advanced noise reduction cylinder is characterized in that: The outer tops of the threaded barrel and the inner sleeve are provided with threaded holes that penetrate each other, and the threaded holes are staggered with the annular groove.

6. The advanced noise reduction cylinder according to claim 4, characterized in that: The inner bushing is flush with the inner circle of the connecting air port.

7. The advanced noise reduction cylinder according to claim 4, characterized in that: The sound-absorbing holes on the inner sleeve are distributed in an array with equal spacing.

8. The advanced noise reduction cylinder according to claim 4, characterized in that: The sound absorbing components are provided with two, and the two sound absorbing components correspond to the two connecting air ports one by one.

Images