Mute type pneumatic vibration cutter

Abstract

The utility model belongs to the technical field of vibration cutters, and particularly relates to a mute type pneumatic vibration cutter which comprises a cutter cylinder, an upper cover is fixed at the left end of the cutter cylinder, an air inlet shaft is transversely fixed in the upper cover, the left end of the air inlet shaft extends to the left end of the upper cover and is fixedly provided with an air pipe connector, and an air valve cylinder is fixed in the cutter cylinder. The damping springs are arranged at the left end and the right end of the air valve barrel correspondingly, resonance caused by airflow impact of the air valve barrel is reduced, air is exhausted from the upper portion of the air valve barrel instead of from the lower portion of the air valve barrel, the air valve barrel is suspended through the wear-resisting belt, and collision noise of the air valve barrel and the inner wall of the cutter barrel during working vibration is reduced; air flow is silenced at an air outlet of the air valve cylinder, a secondary silencing sleeve is additionally arranged at the top of the pneumatic vibration cutter, and the air flow is secondarily silenced by wool felt, so that the problem of noise pollution caused by too large noise and vibration of the pneumatic vibration cutter is solved, and hearing loss caused by long-term use of a worker is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of vibrating knives, in particular to a silent pneumatic vibrating knife. Background Art

[0002] Pneumatic vibrating knives are mainly used for cutting thick, flexible, and highly elastic materials, such as sponges and foam boards. Pneumatic vibrating knives use compressed air to drive the blade up and down to vibrate at a high frequency, with an amplitude of up to about 10mm, achieving rapid cutting of materials.

[0003] However, the existing pneumatic vibration knife still has the following technical problems when used:

[0004] The pneumatic vibrating knives currently on the market make too much noise and vibration, causing noise pollution to workers when cutting. Long hours of work can lead to hearing loss among workers, endangering human health.

[0005] For this reason, a silent pneumatic vibration knife is now proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the present invention is to provide a silent pneumatic vibrating knife to solve the problems raised in the above background technology.

[0007] The cam is secured to the left side of the air intake pipe and is provided with a camshaft, the camshaft being secured to the left side of the air intake pipe and the camshaft being secured to the air intake pipe.

[0008] Symmetrical air outlet holes are provided on the lower side of the air valve cylinder, a silencer sleeve is fixed to the left end of the outer wall of the upper cover, a silencer is fixed inside the silencer sleeve on the left side of the upper cover, and wool felt is fixed inside the silencer sleeve.

[0009] Preferably, a sealing ring is fixed between the left end of the knife cylinder and the upper cover.

[0010] Preferably, the trachea joint is L-shaped.

[0011] Preferably, a limit mounting groove is provided at the right end of the outer wall of the knife cylinder, a telescopic spring is provided inside the limit mounting groove, a protective sleeve is slidably provided at the right end of the outer wall of the knife cylinder, the left end of the telescopic spring is fixedly connected to the inner wall of the limit mounting groove, and the right end of the telescopic spring is fixedly connected to the left side of the protective sleeve.

[0012] Preferably, symmetrical exhaust holes are provided on the lower side of the silencer sleeve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The present application is provided with a shock-absorbing spring at the left and right ends of the air valve cylinder to reduce the resonance of the air valve cylinder caused by the impact of the air flow, and changes the air source from the upper part of the air valve cylinder to the lower part of the air valve cylinder. The air valve cylinder is suspended in the air with a wear-resistant belt to reduce the collision noise between the air valve cylinder and the inner wall of the knife cylinder during operation vibration. A silencer is used to silence the airflow at the air outlet of the air valve cylinder, and a secondary silencer sleeve is installed on the top of the pneumatic vibrating knife. Wool felt is used to perform secondary silence on the airflow, which solves the problem of noise pollution caused by excessive noise and vibration of the pneumatic vibrating knife and prevents workers from hearing loss due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure;

[0017] Figure 3 It is a structural diagram of the air valve cylinder.

[0018] In the figure: 1 silencer sleeve, 2 knife barrel, 3 air pipe joint, 4 intake shaft, 5 wool felt, 6 muffler, 7 upper cover, 8 valve barrel, 9 diverter block, 10 small piston, 11 shock-absorbing spring, 12 cylinder body, 13 piston, 14 knife shaft, 15 knife clamp, 16 blade, 17 cylinder head, 18 telescopic spring, 19 protective sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0021] Example:

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] Silent pneumatic vibration knife, including a knife barrel 2, the left end of the knife barrel 2 is fixed with an upper cover 7, the interior of the upper cover 7 is transversely fixed with an air intake shaft 4, the left end of the air intake shaft 4 extends to the left end of the upper cover 7 and is fixed with an air pipe joint 3, the interior of the knife barrel 2 is fixed with an air valve barrel 8, the outside of the air valve barrel 8 is wrapped with a rubber wear-resistant belt to ensure that the outer wall of the air valve barrel 8 and the inner wall of the knife barrel 2 do not contact and rub against each other to generate noise, the left and right ends of the air valve barrel 8 are fixed with shock-absorbing springs 11 to reduce the resonance of the air valve barrel 8 caused by the impact of the air flow, the interior of the air valve barrel 8 is fixed with a diverter block 9, the right end of the air intake shaft 4 It is fixedly connected to the left side of the diverter block 9, and a small piston 10 is fixed inside the diverter block 9. The diverter block 9 uses the small piston 10 to reverse the airflow, thereby realizing the reciprocating movement of the piston 13 inside the cylinder body 12. The inside of the air valve cylinder 8 is located at the right end of the diverter block 9 and the cylinder body 12 is fixed. A cylinder cover 17 is fixed to the left side of the cylinder body 12. An air inlet hole is opened on the side wall of the cylinder cover 17 and is directly opposite to the small piston 10. A piston 13 is slidably provided inside the cylinder body 12. A knife shaft 14 is fixed to the right side of the piston 13. A knife clamp 15 is fixed to the right side of the knife shaft 14, and a blade 16 is fixed inside the knife clamp 15.

[0024] Symmetrical air outlet holes are provided on the lower side of the air valve cylinder 8. A silencer sleeve 1 is fixed to the left end of the outer wall of the upper cover 7, and the first silencer is achieved through the silencer sleeve 1. A silencer 6 is fixed to the left side of the upper cover 7 inside the silencer sleeve 1, and a wool felt 5 is fixed inside the silencer sleeve 1, and the second silencer is achieved through the wool felt 5.

[0025] A sealing ring is fixed between the left end of the knife cylinder 2 and the upper cover 7 to ensure the sealing of the connection between the knife cylinder 2 and the upper cover 7 and avoid air leakage.

[0026] The air pipe connector 3 is L-shaped, which facilitates connection between the air pipe connector 3 and the air supply equipment.

[0027] A limit mounting groove is provided at the right end of the outer wall of the knife cylinder 2, and a telescopic spring 18 is provided inside the limit mounting groove. A protective sleeve 19 is slidingly provided at the right end of the outer wall of the knife cylinder 2. The left end of the telescopic spring 18 is fixedly connected to the inner wall of the limit mounting groove, and the right end of the telescopic spring 18 is fixedly connected to the left side of the protective sleeve 19. When the blade 16 is not in use, the protective sleeve 19 can be driven to move to the right end by the telescopic spring 18, so that the protective sleeve 19 is sleeved on the outside of the blade 16 to effectively protect the blade 16.

[0028] Symmetrical exhaust holes are provided on the lower side of the silencer sleeve 1, and the silenced airflow is finally discharged through the exhaust holes.

[0029] Working principle:

[0030] This pneumatic vibrating knife sends compressed air into the air inlet shaft 4 through the air pipe joint 3, and then uses the small piston 10 to reverse the airflow through the diverter block 9. The compressed air pushes the piston 13 through the cylinder head 17 to move back and forth in the cylinder body 12. A knife shaft 14 is installed on the piston, and a knife clamp 15 and a blade 16 are installed on the knife shaft 14. When the piston 13 moves up and down, the knife shaft 14 drives the blade 16 to move up and down. This realizes the reciprocating up and down cutting movement of flexible materials. Two air outlets are provided at the lower part of the air valve cylinder 8. The compressed air through the air outlet holes passes through the four sides of the air valve cylinder 8 and the inner wall of the knife cylinder 2 to the upper cover 7. The upper cover is equipped with a silencer 6. After the compressed air is silenced for the first time by the silencer 6, it enters the silencer sleeve 1. The silencer sleeve 1 is equipped with wool felt 5. The compressed air is silenced again by the wool felt 5, thereby achieving noise reduction and silencing of the pneumatic vibrating knife.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A silent pneumatic vibrating knife, comprising a knife barrel (2), characterized in that: The left end of the knife cylinder (2) is fixed with an upper cover (7), the interior of the upper cover (7) is transversely fixed with an air intake shaft (4), the left end of the air intake shaft (4) extends to the left end of the upper cover (7) and is fixed with an air pipe joint (3), the interior of the knife cylinder (2) is fixed with an air valve cylinder (8), the exterior of the air valve cylinder (8) is wrapped with a rubber wear-resistant belt, the left and right ends of the air valve cylinder (8) are fixed with shock-absorbing springs (11), the interior of the air valve cylinder (8) is fixed with a diverter block (9), the right end of the air intake shaft (4) is fixedly connected to the left side of the diverter block (9), and the left end of the air valve cylinder (8) is fixed with a damping spring (11). Then, a small piston (10) is fixed inside the diverter block (9), a cylinder body (12) is fixed inside the air valve cylinder (8) at the right end of the diverter block (9), a cylinder cover (17) is fixed on the left side of the cylinder body (12), a side wall of the cylinder cover (17) is provided with an air inlet hole and is directly opposite to the small piston (10), a piston (13) is slidably arranged inside the cylinder body (12), a knife shaft (14) is fixed on the right side of the piston (13), a knife clamp (15) is fixed on the right side of the knife shaft (14), and a blade (16) is fixed inside the knife clamp (15); Symmetrical air outlet holes are provided on the lower side of the air valve cylinder (8); a silencer sleeve (1) is fixed to the left end of the outer wall of the upper cover (7); a silencer (6) is fixed inside the silencer sleeve (1) on the left side of the upper cover (7); and a wool felt (5) is fixed inside the silencer sleeve (1).

2. The silent pneumatic vibrating knife according to claim 1, characterized in that: A sealing ring is fixed between the left end of the knife cylinder (2) and the upper cover (7).

3. The silent pneumatic vibrating knife according to claim 1, characterized in that: The trachea joint (3) is L-shaped.

4. The silent pneumatic vibrating knife according to claim 1, characterized in that: A limit installation groove is provided at the right end of the outer wall of the knife cylinder (2), a telescopic spring (18) is provided inside the limit installation groove, a protective sleeve (19) is slidably provided at the right end of the outer wall of the knife cylinder (2), the left end of the telescopic spring (18) is fixedly connected to the inner wall of the limit installation groove, and the right end of the telescopic spring (18) is fixedly connected to the left side of the protective sleeve (19).

5. The silent pneumatic vibrating knife according to claim 1, characterized in that: Symmetrical exhaust holes are provided on the lower side of the silencer sleeve (1).

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