Clean pneumatic impact cylinder

Abstract

A clean pneumatic impact cylinder relates to the technical field of impact tools, and adopts the technical scheme that the clean pneumatic impact cylinder comprises a cylinder body, a front end cover and a rear end cover, a piston is connected in the cylinder body in a sliding manner, the piston is provided with a piston rod, the piston rod comprises a sliding part and a connecting part which are sequentially connected, the sliding part and the connecting part are tubular, and the front end cover and the rear end cover are arranged in the cylinder body. The connecting part is arranged in the cylinder body, and one end of the connecting part is connected with the piston; the sliding part is slidably connected with the front end cover, and an impact chisel is slidably connected in the sliding part; and an impact hammer is connected in the connecting part in a sliding manner. The air cylinder structure is improved, air pressure is controlled to complete knocking action, internal energy of air is converted into kinetic energy and acts on the surface of materials, labor intensity of workers is reduced, special channels are arranged for air inlet and air outlet, and air is prevented from being polluted by products.

Description

Technical Field

[0001] The utility model relates to the technical field of impact tools, in particular to a clean pneumatic impact cylinder. Background Art

[0002] During the production processes of polysilicon and monocrystalline silicon, the method of knocking and crushing is often adopted, such as knocking polysilicon long bar materials into section bar materials, crushing monocrystalline silicon edge skin materials, etc. At present, knocking and crushing is usually completed manually, with a relatively large labor intensity and not suitable for realizing automated operations. Therefore, it is necessary to design an impact crushing tool that reduces the labor intensity of manpower. Content of the Utility Model

[0003] Aiming at the problem of large labor intensity in manual knocking and crushing in the prior art solution, the utility model provides a clean pneumatic impact cylinder.

[0004] The utility model provides the following technical solution: A clean pneumatic impact cylinder includes a cylinder body, a front end cover and a rear end cover arranged at both ends of the cylinder body. A piston is slidably connected in the cylinder body. The piston is provided with a piston rod slidably connected to the front end cover. The piston divides the interior of the cylinder body into a first air chamber and a second air chamber. The first air chamber is provided with a first air vent, and the second air chamber is provided with a second air vent. The piston rod includes a sliding part and a connecting part connected in sequence. Both the sliding part and the connecting part are tubular. The connecting part is arranged in the cylinder body. One end of the connecting part is connected to the piston, and the other end forms a limiting step with the sliding part.

[0005] The sliding part is slidably connected to the front end cover, and a third air chamber is arranged between the sliding part and the front end cover. The third air chamber is provided with a third air vent. An impact chisel is slidably connected in the sliding part. A fourth air chamber is formed between the impact chisel and the sliding part. The fourth air chamber is provided with a fourth air vent for communicating with the third air chamber. One end of the impact chisel extends into the connecting part and is provided with a limiting flange.

[0006] An impact hammer is slidably connected in the connecting part. The impact hammer divides the interior of the connecting part into a fifth air chamber and a sixth air chamber. The fifth air chamber communicates with the fourth air chamber. The fifth air chamber is provided with a fifth air vent for communicating with the second air chamber. The piston is further provided with a sixth air vent for communicating the sixth air chamber with the first air chamber.

[0007] Preferably, the connecting part is threadedly connected to the piston.

[0008] Preferably, the impact chisel is provided with a connecting head.

[0009] Preferably, a groove is provided on the inner wall of the front end cover to form the third air chamber, and sealing rings are provided on both sides of the front end cover in the third air chamber.

[0010] Preferably, a groove is provided on the inner wall of the sliding part to form the fourth air chamber, a sealing ring is provided on the side of the sliding part away from the limiting flange in the fourth air chamber, and a sealing ring is provided on the side of the limiting flange facing the fourth air chamber; a vent groove for communicating the fourth air chamber with the fifth air chamber is provided on the outer wall of the impact chisel.

[0011] The beneficial effects of the present utility model are as follows: The cylinder structure is improved, the knocking action is completed by controlling the air pressure, the internal energy of the gas is converted into kinetic energy and acts on the surface of the material, reducing the manual labor intensity, and special channels are provided for both air intake and exhaust to avoid gas being contaminated by the product. Description of the Drawings

[0012] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the impact cylinder.

[0013] Figure 2 It is a sectional view of an embodiment of the impact cylinder.

[0014] Figure 3 It is a working schematic diagram of an embodiment of the impact cylinder Figure Ⅰ 。

[0015] Figure 4 It is a working schematic diagram of an embodiment of the impact cylinder Figure Ⅱ 。

[0016] Figure 5 It is a working schematic diagram of an embodiment of the impact cylinder Figure Ⅲ 。

[0017] Reference numerals: 10, cylinder block; 11, first air chamber; 12, first vent port; 13, second air chamber; 14, second vent port; 20, front end cover; 21, third air chamber; 22, third vent port; 30, rear end cover; 40, piston; 41, sixth vent port; 51, sliding part; 511, fourth air chamber; 512, fourth vent port; 52, connecting part; 521, fifth air chamber; 522, fifth vent port; 523, sixth air chamber; 53, limiting step; 60, impact chisel; 61, limiting flange; 62, connecting head; 63, vent groove; 70, impact hammer. Detailed Embodiments

[0018] The following further describes the embodiments of the present utility model in more detail with reference to the drawings and reference numerals, so that those skilled in the art can implement it after studying this specification. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] The present utility model provides a clean pneumatic impact cylinder as shown in Figure 1-2 which includes a cylinder body 10, a front end cover 20 and a rear end cover 30 arranged at both ends of the cylinder body 10. A piston 40 is slidably connected inside the cylinder body 10, and the piston 40 is provided with a piston rod slidably connected to the front end cover 20. A sealing ring is arranged between the piston 40 and the cylinder body 10, so that the piston 40 divides the interior of the cylinder body 10 into a first air chamber 11 and a second air chamber 13. The first air chamber 11 is provided with a first air vent 12, and the second air chamber 13 is provided with a second air vent 14. Both the first and second air vents are used to connect an air delivery pipe to input or discharge gas, thereby adjusting the air pressure in the first air chamber 11 and the second air chamber 13 to push the piston and the piston rod to slide.

[0020] The present utility model further improves the structure of the cylinder. Please refer to Figure 2 wherein the piston rod includes a sliding portion 51 and a connecting portion 52 which are connected in sequence, and both the sliding portion 51 and the connecting portion 52 are hollow tubes.

[0021] The sliding portion 51 is slidably connected to the front end cover 20, and a third air chamber 21 is arranged between the sliding portion 51 and the front end cover 20. Specifically, a groove is formed on the inner wall of the front end cover 20 to form the third air chamber 21, and sealing rings are arranged on both sides of the third air chamber 21 of the front end cover 20 to ensure airtightness.

[0022] An impact chisel 60 is slidably connected inside the sliding portion 51. One end of the impact chisel 60 extends into the connecting portion 52 and is provided with a limiting flange 61 to limit the stroke of the impact chisel, and the other end of the impact chisel 60 is provided with a connecting head 62 for connecting an impact head. A fourth air chamber 511 is formed between the impact chisel 60 and the sliding portion 51. Specifically, a groove is formed on the inner wall of the sliding portion 51 to form the fourth air chamber 511, and a sealing ring is arranged on the side of the sliding portion 51 away from the limiting flange 61 of the fourth air chamber 511, and a sealing ring is arranged on the side of the limiting flange 61 facing the fourth air chamber 511 to ensure airtightness. The fourth air chamber 511 is provided with a fourth air vent 512 for communicating with the third air chamber 21, and the third air chamber 21 is further provided with a third air vent 22, and the third air vent 22 is used to connect to an air delivery pipeline.

[0023] The connecting part 52 is arranged inside the cylinder block 10, one end of which is threadedly connected to the piston 40, and the other end forms a limiting step 53 with the sliding part 51 to limit the stroke of the piston rod. An impact hammer 70 is slidably connected inside the connecting part 52, and the impact hammer 70 divides a part inside the connecting part 52 into a fifth air chamber 521 and a sixth air chamber 523. The fifth air chamber 521 is communicated with the fourth air chamber 511. Specifically, an air vent groove 63 for communicating the fourth air chamber and the fifth air chamber is arranged on the outer wall of the impact chisel 60, and the fifth air chamber 521 is provided with a fifth air vent 522 for communicating with the second air chamber 13. The piston 40 is further provided with a sixth air vent 41 for communicating the sixth air chamber 523 with the first air chamber 11.

[0024] Please refer to Figures 3-5 , the working process of the present utility model is as follows: Figure 3 For the initial state of the impact cylinder, the piston 40 is on the right side of the cylinder block 10, and the impact hammer 70 is on the right side of the connecting part 52. Pure gas is input into the cylinder body through the first air vent 12, and the gas in the second air chamber 13 is discharged through the second air vent 14. The air pressure drives the piston 40 and the piston rod to slide to the left until the limiting step 53 is blocked by the front end cover 20, as Figure 4 shown. At this time, the fourth air vent 512 communicates the fourth air chamber 511 with the third air chamber 21, and part of the gas in the fifth air chamber 521 can be discharged into the third air chamber 21 through the fourth air chamber 511 and then discharged through the third air vent 22; at the same time, part of the gas in the fifth air chamber 521 can be discharged into the second air chamber 13 through the fifth air vent 522. The air pressure drives the impact hammer 70 to slide to the left, and the impact chisel 60 slides to the left under the action of the impact hammer 70, transmitting the impact force to the material until the limiting flange 61 is blocked, completing the knocking action and closing the channel between the fifth air chamber 521 and the fourth air chamber 511; then, gas is input through the second air vent 14 and discharged through the first air vent 12, as Figure 5 shown. The air pressure drives the impact hammer 70, the piston 40 and the piston rod to reset. According to the above process, knocking can be carried out periodically, highly simulating the manual knocking action, and the knocking frequency can be flexibly controlled. Figures 3-5 The gas flow direction in

[0025] The above are one or more embodiments of the present utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A clean pneumatic impact cylinder, comprising a cylinder body and a front end cover and a rear end cover arranged at both ends of the cylinder body. A piston is slidably connected in the cylinder body. The piston is provided with a piston rod slidably connected to the front end cover. The piston divides the interior of the cylinder body into a first air chamber and a second air chamber. The first air chamber is provided with a first air vent, and the second air chamber is provided with a second air vent. It is characterized in that: The piston rod includes a sliding part and a connecting part connected in sequence. Both the sliding part and the connecting part are tubular. The connecting part is arranged in the cylinder body. One end of the connecting part is connected to the piston, and the other end forms a limiting step with the sliding part; The sliding part is slidably connected to the front end cover, and a third air chamber is arranged between the sliding part and the front end cover. The third air chamber is provided with a third air vent; An impact chisel is slidably connected in the sliding part, and a fourth air chamber is formed between the impact chisel and the sliding part. The fourth air chamber is provided with a fourth air vent for communicating with the third air chamber; One end of the impact chisel extends into the connecting part and is provided with a limiting flange; An impact hammer is slidably connected in the connecting part. The impact hammer divides the interior of the connecting part into a fifth air chamber and a sixth air chamber. The fifth air chamber is communicated with the fourth air chamber. The fifth air chamber is provided with a fifth air vent for communicating with the second air chamber. The piston is also provided with a sixth air vent for communicating the sixth air chamber with the first air chamber.

2. The clean pneumatic impact cylinder according to claim 1, characterized in that The connecting part is threadedly connected to the piston.

3. A clean pneumatic impact cylinder according to claim 1, characterized in that, The impact chisel is provided with a connecting head.

4. A clean pneumatic impact cylinder according to claim 1, characterized in that, A groove is formed on the inner wall of the front end cover to form the third air chamber, and sealing rings are arranged on both sides of the third air chamber of the front end cover.

5. A clean pneumatic impact cylinder according to claim 1, characterized in that, A groove is formed on the inner wall of the sliding part to form the fourth air chamber. A sealing ring is arranged on the side of the sliding part away from the limiting flange of the fourth air chamber, and a sealing ring is arranged on the side of the limiting flange facing the fourth air chamber; An air vent groove for communicating the fourth air chamber with the fifth air chamber is arranged on the outer wall of the impact chisel.

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