Pneumatic rod assembly

Abstract

The utility model discloses a pneumatic rod assembly, including the cylinder body, the inside sliding of cylinder body is provided with the piston, the bottom of cylinder body sliding is provided with the rod body, and the piston fixedly connected is in the rod body, the bottom fixedly connected with the bottom plate of rod body, the outer wall of cylinder body is fixedly connected with the fixed frame, the fixed frame between bottom plate and fixedly connected with telescopic bellows, the side of telescopic bellows is provided with the guide rod, the guide rod fixedly connected on the bottom plate, the fixed frame is opened and is provided with the guide hole of guide rod sliding, the telescopic bellows is provided with the air outlet subassembly, the air outlet subassembly includes the gas box, the air hole, the first gas pipe and the first check valve. This pneumatic rod assembly, through setting up bottom plate, telescopic bellows, guide rod and guide hole etc. structure, utilize the rod body movement, gas is inclined and is blown to the rod body downward, blows the granular impurity outside the rod body, guarantees the stability of the rod body telescopic simultaneously, improves the use efficiency of pneumatic rod assembly.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic rod technology, and in particular to a pneumatic rod assembly. Background Technology

[0002] A pneumatic rod is an elastic element that uses gas as its working medium. The sealing of the cylinder of a pneumatic rod with a piston assembly is particularly important. Poor sealing will affect the quality of the pneumatic rod.

[0003] In existing pneumatic rod assemblies, the piston rod surface is easily contaminated with particulate impurities during extension and retraction. These impurities can easily enter the cylinder as the piston rod moves and rub against the sealing ring, causing wear on the sealing ring and affecting the cylinder's sealing performance.

[0004] Therefore, it is necessary to propose a pneumatic rod assembly to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a pneumatic rod assembly to solve the problem that in existing pneumatic rod assemblies, the surface of the piston rod is easily contaminated with particulate impurities during extension and retraction, and these particulate impurities can easily enter the cylinder body with the movement of the piston rod and cause friction with the sealing ring, resulting in wear of the sealing ring and affecting the sealing performance of the cylinder body.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic rod assembly, including a cylinder body, a piston slidably disposed inside the cylinder body, a rod body slidably disposed at the bottom end of the cylinder body, and the piston being fixedly connected to the rod body; A base plate is fixedly connected to the bottom end of the rod body, a fixing frame is fixedly connected to the outer wall of the cylinder body, a telescopic corrugated cylinder is fixedly connected between the base plate and the fixing frame, a guide rod is provided on the side of the telescopic corrugated cylinder, the guide rod is fixedly connected to the base plate, and a guide hole for the guide rod to slide is provided on the fixing frame. When the rod extends, the base plate stretches the telescopic corrugated cylinder, and the filtered gas enters the inside of the telescopic corrugated cylinder. When the rod retracts, the base plate compresses the telescopic corrugated cylinder, and the gas is blown towards the rod.

[0007] Preferably, an air outlet assembly is provided at the telescopic corrugated cylinder. The air outlet assembly includes an air box, an air hole, a first air pipe, and a first one-way valve. One end of the first air pipe is connected to the top of the telescopic corrugated cylinder, and the other end of the first air pipe is connected to the air box. The first one-way valve is installed on the first air pipe, and the first air pipe is fixed to the outer wall of the cylinder body. The air box is located on the side of the guide rod, and the air hole is opened on the inner ring wall of the air box, with the air hole tilted downward.

[0008] Preferably, an air replenishment component is provided at the telescopic corrugated cylinder. The air replenishment component includes a second air pipe and a second one-way valve. The second air pipe is connected to the top end of the telescopic corrugated cylinder, and the second one-way valve is installed on the second air pipe.

[0009] Preferably, two telescopic corrugated cylinders are provided, with the two telescopic corrugated cylinders located on both sides of the rod body.

[0010] Preferably, a cotton sleeve is installed at the bottom end of the cylinder body, and the cotton sleeve is wrapped around and fitted to the outside of the rod body.

[0011] Preferably, the top of the cylinder is connected to a connecting pipe for conveying gas.

[0012] Preferably, a docking ring is fixedly connected to the base plate.

[0013] The technical advantages of this utility model are as follows: by setting up a base plate, a telescopic corrugated cylinder, a guide rod, and a guide hole, the gas is blown downwards at an angle by the movement of the rod, removing particulate impurities from the outside of the rod, while ensuring the stability of the rod's extension and retraction, thus improving the efficiency of the pneumatic rod assembly; the guide rod and guide hole reinforce the rod, and the guide rod is set on the side of the telescopic corrugated cylinder to guide its extension and retraction, ensuring the stability of the telescopic corrugated cylinder in use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pneumatic rod assembly of this utility model.

[0015] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0016] Figure 3 This is a cross-sectional structural schematic diagram of the pneumatic rod assembly of this utility model.

[0017] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0018] In the diagram: 1. Cylinder; 2. Piston; 3. Rod; 4. Fixing bracket; 5. Base plate; 6. Telescopic corrugated cylinder; 7. Air box; 8. Air port; 9. First air pipe; 10. First one-way valve; 11. Second air pipe; 12. Second one-way valve; 13. Guide rod; 14. Guide hole; 15. Cotton sleeve; 16. Connecting ring; 17. Connecting pipe. Detailed Implementation

[0019] like Figures 1-4As shown, this utility model provides a pneumatic rod assembly, including a cylinder body 1, a piston 2 slidably disposed inside the cylinder body 1, a rod body 3 slidably disposed at the bottom end of the cylinder body 1, and the piston 2 fixedly connected to the rod body 3. A connecting pipe 17 for conveying gas is connected to the top end of the cylinder body 1. The connecting pipe 17 is connected to an external pneumatic control system (including an air pump, etc.). When gas is conveyed into the cylinder body 1 through the connecting pipe 17, it pushes the piston 2 and the cylinder body 1 to move downwards (see reference). Figure 1 , Figure 3 When the connecting pipe 17 draws suction into the cylinder 1, the piston 2 and the cylinder 1 move upward to reset.

[0020] The piston 2 can be fitted with a rubber sealing ring or other structure to ensure sealing and reduce wear.

[0021] The cylinder body 1 is connected to the equipment's fixed base, frame, and other static structures by means of bolt fastening, welding, or snap-fitting; the bottom end of the rod body 3 is fixedly connected to a base plate 5, and a docking ring 16 is fixedly connected to the base plate 5, which is used to dock with external load components.

[0022] Considering that the surface of the rod 3 is easily contaminated with particulate impurities during extension and retraction (such as in a mechanical assembly workshop where grinding and cutting are required), and that these particulate impurities can easily enter the cylinder 1 as the rod 3 moves, causing friction with the piston 2 and resulting in wear of the piston 2, a fixed frame 4 is fixedly connected to the outer wall of the cylinder 1 to ensure the stable use of the pneumatic rod assembly. Two telescopic corrugated cylinders 6 are fixedly connected between the base plate 5 and the fixed frame 4. The two telescopic corrugated cylinders 6 are located on opposite sides of the rod 3. An air outlet assembly is provided at the telescopic bellows cylinder 6. The air outlet assembly includes an air box 7, an air hole 8, a first air pipe 9, and a first one-way valve 10. One end of the first air pipe 9 is connected to the top of the telescopic bellows cylinder 6, and the other end of the first air pipe 9 is connected to the air box 7. The first one-way valve 10 is installed on the first air pipe 9, which is fixed to the outer wall of the cylinder body 1. The air box 7 is located on the side of the guide rod 13. The air hole 8 is opened on the inner ring wall of the air box 7 and is inclined downward. The first one-way valve 10 allows the gas in the telescopic bellows cylinder 6 to enter the interior of the air box 7 through the first air pipe 9 without reverse flow.

[0023] Multiple air holes 8 are provided, and the air box 7 is semi-circular. Two air boxes 7 are distributed in a ring shape to ensure the coverage area.

[0024] The telescopic corrugated cylinder 6 can be made of, but is not limited to, nitrile rubber.

[0025] An air supply assembly is provided at the telescopic corrugated cylinder 6. The air supply assembly includes a second air pipe 11 and a second one-way valve 12. The second air pipe 11 is connected to the top of the telescopic corrugated cylinder 6, and the second one-way valve 12 is installed on the second air pipe 11. The second one-way valve 12 is provided so that external air can enter the interior of the telescopic corrugated cylinder 6 through the second air pipe 11 without flowing in the opposite direction.

[0026] Furthermore, a filter screen (not shown in the figure) is installed on the second air pipe 11 to prevent impurities from entering the interior of the telescopic corrugated cylinder 6, and it is cleaned manually on a regular basis.

[0027] The rod 3 moves, and when the rod 3 extends, the rod 3 stretches the telescopic corrugated cylinder 6 through the base plate 5, and the filtered gas enters the inside of the telescopic corrugated cylinder 6; when the rod 3 retracts, the rod 3 compresses the telescopic corrugated cylinder 6 through the base plate 5, and the gas enters the inside of the gas box 7 and is blown downwards at an angle towards the rod 3 to blow away particulate impurities outside the rod 3.

[0028] The telescopic corrugated cylinder 6 is of suitable size to ensure sufficient gas storage, while the inner diameter of the first air pipe 9 is small, so the gas will accelerate when passing through the first air pipe 9.

[0029] A guide rod 13 is provided on the side of the telescopic corrugated cylinder 6. The guide rod 13 is fixedly connected to the base plate 5. A guide hole 14 is provided on the fixing frame 4 for the guide rod 13 to slide. When the rod body 3 extends or retracts, the guide rod 13 slides inside the guide hole 14. The guide rod 13 and the guide hole 14 are provided to reinforce the rod body 3 and ensure the stability of the rod body 3 during extension and retraction. At the same time, the guide rod 13 is provided on the side of the telescopic corrugated cylinder 6 to guide the extension and retraction of the telescopic corrugated cylinder 6 and ensure the stability of the telescopic corrugated cylinder 6 during use.

[0030] In actual use, multiple sets of guide rods 13 and guide holes 14 can be installed on the side of the telescopic corrugated cylinder 6 to ensure its stable telescopic movement.

[0031] A cotton sleeve 15 is installed at the bottom of the cylinder body 1, and the cotton sleeve 15 is attached to the outside of the rod body 3. After blowing, the cotton sleeve 15 is used to wipe again to ensure cleaning efficiency. The cotton sleeve 15 can be installed at the bottom of the cylinder body 1 in the form of two semi-circular parts and is replaced regularly by the operator.

Claims

1. A pneumatic rod assembly, characterized in that: It includes a cylinder (1), a piston (2) is slidably disposed inside the cylinder (1), a rod (3) is slidably disposed at the bottom end of the cylinder (1), and the piston (2) is fixedly connected to the rod (3); a base plate (5) is fixedly connected to the bottom end of the rod (3), a fixing frame (4) is fixedly connected to the outer wall of the cylinder (1), a telescopic corrugated cylinder (6) is fixedly connected between the base plate (5) and the fixing frame (4), a guide rod (13) is disposed on the side of the telescopic corrugated cylinder (6), the guide rod (13) is fixedly connected to the base plate (5), and a guide hole (14) is provided on the fixing frame (4) for the guide rod (13) to slide; when the rod (3) extends, the telescopic corrugated cylinder (6) is stretched through the base plate (5), and the filtered gas enters the interior of the telescopic corrugated cylinder (6); when the rod (3) retracts, the telescopic corrugated cylinder (6) is compressed through the base plate (5), and the gas is blown toward the rod (3).

2. The pneumatic rod assembly according to claim 1, characterized in that: An air outlet assembly is provided at the telescopic corrugated cylinder (6). The air outlet assembly includes an air box (7), an air hole (8), a first air pipe (9), and a first one-way valve (10). One end of the first air pipe (9) is connected to the top of the telescopic corrugated cylinder (6), and the other end of the first air pipe (9) is connected to the air box (7). The first one-way valve (10) is installed on the first air pipe (9). The first air pipe (9) is fixed on the outer wall of the cylinder body (1). The air box (7) is located on the side of the guide rod (13). The air hole (8) is opened on the inner ring wall of the air box (7), and the air hole (8) is inclined downward.

3. The pneumatic rod assembly according to claim 1, characterized in that: An air supply component is provided at the telescopic corrugated cylinder (6). The air supply component includes a second air pipe (11) and a second one-way valve (12). The second air pipe (11) is connected to the top of the telescopic corrugated cylinder (6), and the second one-way valve (12) is installed on the second air pipe (11).

4. The pneumatic rod assembly according to claim 1, characterized in that: Two telescopic corrugated cylinders (6) are provided, and the two telescopic corrugated cylinders (6) are located on both sides of the rod (3).

5. The pneumatic rod assembly according to claim 1, characterized in that: The bottom end of the cylinder (1) is fitted with a cotton sleeve (15), and the cotton sleeve (15) surrounds and fits the outside of the rod (3).

6. The pneumatic rod assembly according to claim 1, characterized in that: The top of the cylinder (1) is connected to a connecting pipe (17) for conveying gas.

7. The pneumatic rod assembly according to claim 1, characterized in that: A docking ring (16) is fixedly connected to the base plate (5).

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