Mute type pneumatic vibration cutter

Abstract

The invention 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 to the left end of the cutter cylinder, an air inlet shaft is transversely fixed to the interior of 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 to the interior of 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 invention relates to the technical field of vibrating knives, in particular to a silent pneumatic vibrating knife. Background Art

[0002] Pneumatic vibration knife is mainly used for cutting thick, flexible and elastic flexible materials, such as sponge, foam board, etc. Pneumatic vibration knife drives the blade up and down with high frequency vibration through compressed air, and the amplitude can reach up to about 10mm, so as to achieve 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. Summary of the invention

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

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a silent pneumatic vibrating knife comprises a knife barrel, an upper cover is fixed on the left end of the knife barrel, an air intake shaft is transversely fixed inside the upper cover, the left end of the air intake shaft extends to the left end of the upper cover and is fixed with an air pipe joint, an air valve barrel is fixed inside the knife barrel, a rubber wear-resistant belt is wrapped on the outside of the air valve barrel, a shock-absorbing spring is fixed on the left and right ends of the air valve barrel, a shunt block is fixed inside the air valve barrel, the right end of the air intake shaft is fixedly connected to the left side of the shunt block, a small piston is fixed inside the shunt block, a cylinder body is fixed inside the air valve barrel at the right end of the shunt block, a cylinder head is fixed on the left side of the cylinder body, an air intake hole is opened on the side wall of the cylinder head and is directly opposite to the small piston, a piston is slidably arranged inside the cylinder body, a knife shaft is fixed on the right side of the piston, a knife clamp is fixed on the right side of the knife shaft, and a blade is fixed inside the knife clamp;

[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 barrel, 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 barrel, 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 present invention has the following beneficial effects:

[0014] The present application has shock-absorbing springs installed 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 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 working 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 silencer 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 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 for Figure 1 A cross-sectional view of

[0017] Figure 3 It is a schematic diagram of the structure 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 silencer, 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Example:

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

[0023] A silent pneumatic vibration knife comprises a knife barrel 2, an upper cover 7 is fixed to the left end of the knife barrel 2, an air intake shaft 4 is transversely fixed inside the upper cover 7, 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, an air valve barrel 8 is fixed inside the knife barrel 2, and a rubber wear-resistant belt is provided on the outside of the air valve barrel 8 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, shock-absorbing springs 11 are fixed to the left and right ends of the air valve barrel 8 to reduce the resonance of the air valve barrel 8 caused by the impact of air flow, a diverter block 9 is fixed inside the air valve barrel 8, and the right end of the air intake shaft 4 It is fixedly connected to the left side of the diverter block 9, a small piston 10 is fixed inside the diverter block 9, and the diverter block 9 uses the small piston 10 to reverse the airflow, so as to realize the reciprocating movement of the piston 13 inside the cylinder body 12. The cylinder body 12 is fixed inside the air valve cylinder 8 at the right end of the diverter block 9, a cylinder head 17 is fixed on the left side of the cylinder body 12, an air inlet hole is opened on the side wall of the cylinder head 17 and faces 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;

[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 to avoid air leakage.

[0026] The air pipe connector 3 is L-shaped, which facilitates the 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 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 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] The pneumatic vibration knife delivers 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 to reciprocate up and down in the cylinder body 12 through the cylinder head 17. 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 blade 16 is driven up and down by the knife shaft 14. Thus, the reciprocating up and down cutting movement of the flexible material is realized. Two air outlets are provided at the lower part of the air valve cylinder 8. The compressed air through the air outlet passes through the surrounding 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. The compressed air enters the silencer sleeve 1 after the first silencer treatment through the silencer 6. 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 vibration 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 attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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), an air intake shaft (4) is transversely fixed inside the upper cover (7), 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), an air valve cylinder (8) is fixed inside the knife cylinder (2), the outside of the air valve cylinder (8) is wrapped with a rubber wear-resistant belt, shock-absorbing springs (11) are fixed at the left and right ends of the air valve cylinder (8), a diverter block (9) is fixed inside the air valve cylinder (8), and the right end of the air intake shaft (4) is fixedly connected to the left side of the diverter block (9). 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 faces 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 sleeved 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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