Improved air cylinder for pneumatic nailing machine

Abstract

The utility model discloses an improved air cylinder for a pneumatic nailing machine, which relates to the technical field of air cylinders and comprises an air cylinder body, a rod side end cover is arranged on the outer surface of the front end of the air cylinder body, a rodless side end cover is arranged on the outer surface of the rear end of the air cylinder body, and four bolts are arranged on the outer surface of the front end of the rod side end cover. The outer surfaces of the rear ends of the four bolts are all provided with nuts, the outer surface of the rear end of the connecting rod is provided with a connecting ring, and a dustproof ring is arranged in the connecting ring. According to the improved air cylinder for the pneumatic nailing machine, due to the fact that the piston, the O-shaped sealing ring and the annular groove are arranged, the situation that the sealing effect is reduced and permanent compression deformation occurs due to the fact that the O-shaped sealing ring is compressed for a long time can be avoided, and the service life of the O-shaped sealing ring is prolonged; and the air cylinder can be more conveniently disassembled when the air cylinder is overhauled.

Description

Technical Field

[0001] This utility model relates to the field of cylinder technology, and in particular to an improved cylinder for a pneumatic nailing machine. Background Technology

[0002] Most products on the market fall into several categories: Currently, the cylinders used in the market all have straight cylindrical inner bores. The rubber O-rings that provide the sealing function are constantly under compression from the moment the machine is assembled. Under long-term compression, the elastomer is prone to permanent compression deformation, which greatly shortens the service life of the rubber O-rings. Deformed rubber O-rings can lead to reduced machine power, and in severe cases, the machine may not function properly. Furthermore, most existing cylinders are installed using hex bolts, requiring an hex wrench for maintenance. Hex wrenches are relatively uncommon in daily life, which creates certain inconveniences for users. To address the shortcomings of existing technology, we propose an improved cylinder for pneumatic nail machines. Utility Model Content

[0003] The main objective of this invention is to provide an improved cylinder for a pneumatic nailing machine, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An improved pneumatic nailing machine cylinder includes a cylinder body. A rod-side end cap is provided on the front outer surface of the cylinder body, and a rodless side end cap is provided on the rear outer surface of the cylinder body. Four bolts are provided on the front outer surface of the rod-side end cap, and a connecting rod is provided on the rear outer surface of each of the four bolts. A nut is provided on the rear outer surface of each connecting rod. A connecting ring is provided on the front outer surface of the rod-side end cap, and a dustproof ring is provided inside the connecting ring.

[0006] Preferably, a piston rod is provided inside the cylinder body, a piston is provided on the outer surface of the piston rod, two O-rings are provided on the outer surface of the piston, a wear-resistant ring is provided between the two O-rings, a first buffer sleeve is provided at the front end of the piston, a second buffer sleeve is provided at the rear end of the piston, and two annular grooves are formed on the inner surface of the cylinder body.

[0007] Preferably, the outer surfaces of the rear ends of the four bolts are fixedly connected to the connecting rod, the nuts are threadedly connected to the connecting rod, and the end caps on the rod-side and the end caps on the rodless side are detachably connected to the nuts via bolts and connecting rods.

[0008] Preferably, the connecting ring is fixedly connected to the outer surface of the front end cap on the rod side, and the dustproof ring is fixedly snapped inside the connecting ring.

[0009] Preferably, the outer surface of the piston rod is in close contact with and slidably connected to the inner surface of the dustproof ring, the piston is fixedly connected to the outer surface of the piston rod, and the first buffer sleeve and the second buffer sleeve are respectively fixedly connected to the front and rear ends of the piston.

[0010] Preferably, the outer surface of the piston has two annular grooves, and the two O-rings are respectively fitted onto the two annular grooves, with the outer diameter of the two O-rings being the same as that of the annular grooves.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the piston, O-ring, and annular groove are designed to prevent the O-ring from being compressed for a long time, which would reduce the sealing effect and cause permanent compression deformation. This extends the service life of the O-ring. When the cylinder is not working, the two O-rings on the outer surface of the piston can be moved into the two annular grooves. At this time, the two O-rings will not be compressed by the inner wall of the cylinder body, and the two O-rings can be in a relaxed state. This prevents the O-ring from being compressed for a long time, which would reduce the sealing effect and cause permanent compression deformation. This extends the service life of the O-ring and makes the operation convenient and quick.

[0014] 2. In this utility model, the bolts, connecting rods, and nuts facilitate cylinder disassembly during maintenance. When internal cylinder maintenance is required, the four nuts are removed, the four bolts are pulled to remove the four connecting rods, and the rod-side end cap and rodless end cap are removed to access the cylinder interior. After maintenance, the rod-side end cap and rodless end cap are reinstalled in their original positions, the bolts and connecting rods are reinserted, and the four nuts are tightened. This design makes cylinder disassembly more convenient and quick during maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the piston within the cylinder body of this utility model.

[0017] Figure 3 This is a schematic diagram of the inner wall structure of the cylinder body of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the piston rod and the piston of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall back structure of this utility model.

[0020] In the diagram: 1. Cylinder body; 2. Rod-side end cap; 3. Rodless side end cap; 4. Bolt; 5. Connecting rod; 6. Nut; 7. Connecting ring; 8. Dust seal; 9. Piston rod; 10. Piston; 11. O-ring seal; 12. Wear ring; 13. Buffer sleeve No. 1; 14. Buffer sleeve No. 2; 15. Annular groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-4 As shown, an improved pneumatic nail machine cylinder includes a cylinder body 1, a piston rod 9 inside the cylinder body 1, a piston 10 on the outer surface of the piston rod 9, two O-rings 11 on the outer surface of the piston 10, a wear-resistant ring 12 between the two O-rings 11, a first buffer sleeve 13 at the front end of the piston 10, and a second buffer sleeve 14 at the rear end of the piston 10. Two annular grooves 15 are formed on the inner surface of the cylinder body 1. The outer surface of the piston rod 9 is in close contact with and slidably connected to the inner surface of the dustproof ring 8. The piston 10 is fixedly connected to the outer surface of the piston rod 9. The first buffer sleeve 13 and the second buffer sleeve 14 are respectively fixedly connected... Connected to the front and rear ends of the piston 10, two annular grooves are formed on the outer surface of the piston 10. Two O-rings 11 are respectively fitted onto the two annular grooves. The outer diameter of the two O-rings 11 is the same as that of the annular grooves 15. When the cylinder is not working, the two O-rings 11 on the outer surface of the piston 10 can be moved into the two annular grooves 15. At this time, the two O-rings 11 will not be compressed by the inner wall of the cylinder body 1, and the two O-rings 11 can be in a relaxed state. This can avoid the O-rings 11 being compressed for a long time, which would reduce the sealing effect and cause permanent compression deformation, thus extending the service life of the O-rings 11.

[0023] like Figure 1 , 5As shown, a rod-side end cap 2 is provided on the front outer surface of the cylinder body 1, and a rodless side end cap 3 is provided on the rear outer surface of the cylinder body 1. Four bolts 4 are provided on the front outer surface of the rod-side end cap 2, and a connecting rod 5 is provided on the rear outer surface of each of the four bolts 4. A nut 6 is provided on the rear outer surface of the connecting rod 5. The rear outer surfaces of the four bolts 4 are fixedly connected to the connecting rod 5, and the nut 6 is threadedly connected to the connecting rod 5. The rod-side end cap 2 and the rodless side end cap 3 are detachably connected by the bolts 4, connecting rod 5, and nut 6. When it is necessary to inspect the inside of the cylinder, the four nuts 6 are removed, and then the four bolts 4 are pulled out to pull out the four connecting rods 5 together. Then the rod-side end cap 2 and the rodless side end cap 3 can be removed to inspect the inside of the cylinder. After the inspection is completed, the rod-side end cap 2 and the rodless side end cap 3 are installed back in their original positions, the bolts 4 and connecting rod 5 are reinserted, and then the four nuts 6 are tightened. This makes it easier to disassemble the cylinder when inspecting it.

[0024] It should be noted that this utility model is an improved pneumatic nail machine cylinder. During use, the piston 10, O-rings 11, and annular grooves 15 prevent the O-rings 11 from being compressed for extended periods, thus avoiding reduced sealing performance and permanent deformation, and extending the service life of the O-rings 11. When the cylinder is not in operation, the two O-rings 11 on the outer surface of the piston 10 can be moved into the two annular grooves 15. At this time, the two O-rings 11 are not compressed by the inner wall of the cylinder body 1, and they can be in a relaxed state, preventing reduced sealing performance and permanent deformation caused by prolonged compression. The deformation situation extends the service life of the O-ring 11, and the operation is convenient and quick. The bolts 4, connecting rods 5 and nuts 6 make it easier to disassemble the cylinder during maintenance. When it is necessary to inspect the inside of the cylinder, remove the four nuts 6, then pull out the four bolts 4 to pull out the four connecting rods 5 together, and then remove the end cap 2 on the rod side and the end cap 3 on the rodless side to inspect the inside of the cylinder. After the inspection is completed, install the end cap 2 on the rod side and the end cap 3 on the rodless side back to their original positions, reinsert the bolts 4 and connecting rods 5, and then tighten the four nuts 6. This makes it easier to disassemble the cylinder during maintenance, and the operation is convenient and quick.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An improved pneumatic nailing machine cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) has a rod-side end cap (2) on its front outer surface and a rodless side end cap (3) on its rear outer surface. The rod-side end cap (2) has four bolts (4) on its front outer surface. The four bolts (4) have connecting rods (5) on their rear outer surfaces. The connecting rods (5) have nuts (6) on their rear outer surfaces. The rod-side end cap (2) has a connecting ring (7) on its front outer surface. The connecting ring (7) has a dustproof ring (8) inside it.

2. The improved pneumatic nail machine cylinder according to claim 1, characterized in that: A piston rod (9) is provided inside the cylinder body (1). A piston (10) is provided on the outer surface of the piston rod (9). Two O-rings (11) are provided on the outer surface of the piston (10). A wear-resistant ring (12) is provided between the two O-rings (11). A first buffer sleeve (13) is provided at the front end of the piston (10). A second buffer sleeve (14) is provided at the rear end of the piston (10). Two annular grooves (15) are opened on the inner surface of the cylinder body (1).

3. An improved pneumatic nail machine cylinder according to claim 1, characterized in that: The rear outer surfaces of the four bolts (4) are fixedly connected to the connecting rod (5), the nut (6) is threadedly connected to the connecting rod (5), and the rod-side end cap (2) and the rodless end cap (3) are detachably connected to the connecting rod (5) and the nut (6) through the bolts (4).

4. An improved pneumatic nail machine cylinder according to claim 1, characterized in that: The connecting ring (7) is fixedly connected to the outer surface of the front end cap (2) on the rod side, and the dustproof ring (8) is fixedly installed inside the connecting ring (7).

5. An improved pneumatic nail machine cylinder according to claim 2, characterized in that: The outer surface of the piston rod (9) is in close contact with and slidably connected to the inner surface of the dustproof ring (8). The piston (10) is fixedly connected to the outer surface of the piston rod (9). The first buffer sleeve (13) and the second buffer sleeve (14) are respectively fixedly connected to the front and rear ends of the piston (10).

6. An improved pneumatic nail machine cylinder according to claim 2, characterized in that: The piston (10) has two annular grooves on its outer surface. Two O-rings (11) are respectively fitted on the two annular grooves. The outer diameter of the two O-rings (11) is the same as that of the annular grooves (15).

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