High-frequency cut-off knife

Abstract

The high-frequency cut-off knife comprises a knife cylinder and a guide sleeve arranged in the knife cylinder, an upper cover is arranged at one end of the knife cylinder, an air inlet pipe communicated with the interior of the knife cylinder is arranged on the upper cover, the air inlet pipe is communicated with an air inlet block arranged in the guide sleeve, the air inlet block is provided with a first air inlet hole channel, and an air valve block is arranged on one side of the air inlet block. An air channel is formed in the air valve block, a valve element is arranged in the air valve block in a sliding fit mode and used for switching the flow direction of airflow in the air channel in the air valve block, a sealing block is arranged on one side of the air valve block, an air cylinder barrel is arranged on one side of the sealing block, and a piston connecting rod is arranged in the air cylinder barrel in a sliding fit mode. The first air inlet hole channel communicates with the air valve block and the air cylinder barrel and is matched with the valve element to be used for controlling the piston connecting rod to reciprocate, and the piston connecting rod is connected with a tool holder which is connected with a blade. By means of the mode, materials can be cut stably at a high speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cutting knife technical field, especially a kind of high-frequency cutting knife. BACKGROUND

[0002] Cutting knife is cut using blade up and down high-frequency vibration, front and back left and right numerical control control movement, cutting speed is fast, with strong environmental protection, it is suitable for carbon fiber, glass fiber, fiber cotton, pre-impregnated cloth, aramid, ceramic fiber, cloth, silk circle, leather, felt, carpet, sound-absorbing cotton, sponge, silica gel, rubber, kt board and other non-metallic flexible materials, the finished product that vibrates knife cuts out is neat and tidy, edge is smooth, and the size of cutting piece is accurate, odorless, more environmental protection, vibration knife softness, hard material can be well cut.

[0003] Like the patent number CN214724416U of China, a kind of pneumatic sponge cutting knife is disclosed, piston connecting rod is driven by cylinder, piston connecting rod drives cutting blade reciprocating vibration, but the vibration frequency of this conventional pneumatic vibration knife is not high enough, in order to better cut material, the vibration frequency of vibration knife up and down needs to be further improved. UTILITY MODEL CONTENT

[0004] The utility model mainly solves the technical problem to provide a kind of high-frequency cutting knife, material can be cut at high speed stably.

[0005] To solve the above technical problems, one technical scheme of the utility model is: provide a kind of high-frequency cutting knife, including: cutter barrel and the guide sleeve being set in cutter barrel, one end of cutter barrel is provided with upper cover, upper cover is provided with the air inlet pipe being connected with the inside of cutter barrel, the air inlet block being set in guide sleeve is communicated with air inlet pipe, the first air inlet channel is opened in air inlet block, the air valve block is set on one side of air inlet block, the air path is opened in air valve block, the valve core is slidably fitted in air valve block, the valve core is used to switch the flow direction of airflow in air path in air valve block, the sealing block is set on one side of air valve block, the cylinder barrel is set on one side of sealing block, the piston connecting rod is slidably fitted in cylinder barrel, the first air inlet channel is communicated with air valve block and cylinder barrel and is matched with valve core to control the reciprocating motion of piston connecting rod, the cutter clamp is connected with piston connecting rod, the blade is connected with cutter clamp.

[0006] Preferably, the valve core includes a guide portion, an air passing portion, and a plugging portion, the air valve block is provided with a valve cavity matched with the valve core, the valve cavity includes a guide hole and an air exchange cavity,

[0007] The guide portion is slidably fitted with the guide hole, and the plugging portion is slidably fitted with the air exchange cavity to change the flow direction of the airflow, the air path includes a second air inlet hole and a third air inlet groove opened in the air valve block, the second air inlet hole is communicated with the air exchange cavity, and the third air inlet groove is opened on the side surface of the air valve block and communicated with the air passing portion;

[0008] The sealing block is provided with a fourth air inlet groove and a sealing air hole, the fourth air inlet groove is arranged on the side surface of the sealing block and communicates with the third air inlet groove, and the sealing air hole is arranged below the blocking part and cooperates with the blocking part to switch the on-off of the air inlet hole,

[0009] The cylinder barrel is provided with a fifth air inlet groove and a pressure relief hole, the fifth air inlet groove is arranged on the side surface of the cylinder barrel and communicates with the fourth air inlet groove, the fifth air inlet groove is provided with a sixth air outlet hole, the sixth air outlet hole is arranged below the piston part of the piston connecting rod and is used for pushing the piston connecting rod, and the pressure relief hole is arranged on the side surface of the cylinder barrel.

[0010] Preferably, a round corner part is arranged on the periphery of the upper side surface of the blocking part, so that the gas flow passes through the round corner part and generates a downward pressure on the blocking part.

[0011] Preferably, a stepped displacement groove is arranged on the periphery of the lower side surface of the blocking part, so that the bottom surface of the blocking part is formed with a blocking protruding part, the blocking protruding part cooperates with the sealing air hole of the blocking block to control the on-off of the sealing air hole.

[0012] Preferably, a gas collecting cavity is arranged on the lower side surface of the blocking part, when the piston connecting rod moves towards the valve core, the gas between the piston connecting rod and the valve core is compressed and enters the gas collecting cavity to provide an upward force for the valve core.

[0013] Preferably, the bottom part of the air inlet block is provided with an air inlet cavity, the first air inlet hole communicates with the air inlet cavity, and the air inlet cavity communicates with the second air inlet hole.

[0014] Preferably, the first air inlet hole is vertically arranged.

[0015] Preferably, at least two positioning pins are arranged on the cylinder barrel, and the positioning pins pass through the sealing block and the air valve block.

[0016] Preferably, a first damping spring is arranged between the air inlet block and the upper cover, and a second damping spring is arranged between the guide sleeve and the cutter barrel.

[0017] Preferably, a semicircular limiting block is arranged at the end of the piston connecting rod, the cutter holder is provided with a semicircular mounting hole matched with the semicircular limiting block and a cutter slot communicating with the semicircular mounting hole, the cutter blade is inserted into the cutter slot, a threaded hole communicating with the cutter slot is arranged on the cutter holder, and a mounting screw for abutting the cutter blade against the semicircular limiting block is connected in the threaded hole.

[0018] The utility model discloses the beneficial effect is: through the cooperation of the structure of valve core and the air path in air valve block changes the path of gas flow in air valve, thereby making piston connecting rod moves up and down and drives cutter blade to move up and down and cuts material. Through the design of round corner part and stepped displacement groove, so that the gas flow can generate suitable downward pressure and upward force on the valve core, and further guarantee the stability of the valve core moving up and down to switch the gas flow path. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure schematic view of the utility model;

[0020] Figure 2 is the internal structure schematic view of the utility model removing the cutter barrel;

[0021] Figure 3 is the sectional view of the utility model;

[0022] Figure 4 is the structure schematic view of the valve core of the utility model;

[0023] Figure 5 is the exploded schematic view of the utility model;

[0024] Figure 6 is the exploded structure schematic view of the utility model from another perspective;

[0025] Figure 7 is the structure schematic view of the upper cover in another embodiment of the utility model.

[0026] The marks of various components in the drawings are as follows:

[0027] 1, cutter barrel; 11, guide sleeve; 12, first damping spring; 13, second damping spring; 14, sealing gasket;

[0028] 2, upper cover; 21, air inlet pipe; 22, silencer; 23, mounting ring groove; 24, sound insulation cotton; 25, top cover;

[0029] 3, air inlet block; 31, first air inlet channel; 32, air inlet cavity;

[0030] 4, air valve block; 41, guide hole; 42, air exchange cavity; 43, second air inlet hole; 44, third air inlet groove;

[0031] 5, valve core; 51, guide part; 52, air passing part; 53, plugging part; 531, round corner part; 532, stepped displacement slot; 533, plugging protruding part; 534, gas collecting cavity;

[0032] 6, sealing block; 61, fourth air inlet groove; 62, sealing air hole;

[0033] 7, cylinder barrel; 71, fifth air inlet groove; 711, sixth air outlet hole; 72, pressure relief hole; 73, positioning pin;

[0034] 8, piston connecting rod; 81, semicircular limiting block;

[0035] 9, cutter clamp; 91, semicircular mounting hole; 93, threaded hole; 94, cutter sleeve. DETAILED DESCRIPTION

[0036] In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the scope of the present application. It is understood that the present application is not limited in scope to the particular embodiments disclosed herein. It is also understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, as the scope of the present application will be limited only by the appended claims.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0039] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0041] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0042] In the formula, the physical quantity, such as the basic unit of the International System of Units, should be understood as the basic quantity of the basic unit, or the derived quantity derived from the basic quantity by multiplication, division, differentiation or integration. Mathematical operation.

[0043] Embodiment:

[0044] Reference Figures 1-7 A high-frequency cutter comprises a cutter barrel 1 and a guide sleeve 11 floating in the cutter barrel 1, one end of the cutter barrel 1 is threadedly connected with an upper cover 2, the upper cover 2 is provided with an air inlet pipe 21 communicated to the inside of the cutter barrel 1, the air inlet pipe 21 is communicated with an air inlet block 3 installed in the guide sleeve 11, the air inlet block 3 is provided with a first air inlet channel 31, one side of the air inlet block 3 is provided with an air valve block 4, the air valve block 4 is provided with an air channel, the air valve block 4 is slidably connected with a valve core 5, the valve core 5 is used for switching the flow direction of the air flow in the air channel of the air valve block 4, the air valve block 4 is provided with a sealing block 6 away from the air inlet block 3, the sealing block 6 is provided with a cylinder barrel 7 away from the air valve block 4, the cylinder barrel 7 is slidably connected with a piston connecting rod 8, the first air inlet channel 31 is communicated with the air valve block 4 and the cylinder barrel 7 and cooperates with the valve core 5 to control the reciprocating motion of the piston connecting rod 8, the piston connecting rod 8 is connected with a cutter clamp 9, and the cutter clamp 9 is connected with a cutter blade. Thus, the compressed gas enters the first air inlet channel 31 of the air inlet block 3 from the air inlet pipe 21, enters the air valve block 4 and the cylinder barrel 7, and acts on the piston connecting rod 8, and then the piston connecting rod 8 is realized by the dynamic cooperation between the valve core 5 and the piston connecting rod 8. The reciprocating motion of the piston connecting rod 8 is realized.

[0045] Reference Figures 3-6, the valve core 5 includes a guide part 51, a gas passing part 52, and a blocking part 53, the gas valve block 4 is provided with a valve cavity cooperating with the valve core 5, the valve cavity includes a guide hole 41 and a gas changing cavity 42, the guide part 51 is in sliding cooperation with the guide hole 41, thereby guiding the valve core 5 to stably move up and down, the blocking part 53 is in sliding cooperation with the gas changing cavity 42, thereby changing the flow direction of the gas flow, the gas path includes a second air inlet hole 43 and a third air inlet groove 44 provided in the gas valve block 4, one end of the second air inlet hole 43 is in communication with the first air inlet channel 31, and the other end is in communication with the gas changing cavity 42, the third air inlet groove 44 is provided on the side surface of the gas valve block 4 and is in communication with the gas passing part 52;

[0046] The sealing block 6 is provided with a fourth air inlet groove 61 and a sealing gas hole 62, the fourth air inlet groove 61 is provided on the side surface of the sealing block 6 and is in communication with the third air inlet groove 44, and the sealing gas hole 62 is provided below the blocking part 53 and cooperates with the blocking part 53 to switch the on-off of the air inlet hole. The fifth air inlet groove 71 and the pressure relief hole 72 are provided on the cylinder barrel 7, the fifth air inlet groove 71 is provided on the side surface of the cylinder barrel 7 and is in communication with the fourth air inlet groove 61, the sixth air outlet hole 711 is provided in the fifth air inlet groove 71, the sixth air outlet hole 711 is arranged below the piston part of the piston connecting rod 8, so that the gas flow blown out from the sixth air outlet hole 711 can push the piston connecting rod 8 to move towards the valve core 5, and the pressure relief hole 72 is provided on the side surface of the cylinder barrel 7, when the lower side of the piston part of the piston connecting rod 8 is higher than the pressure relief hole 72 in the process of upward movement, the gas flow is discharged through the pressure relief hole 72 and the piston connecting rod 8 falls down.

[0047] Reference Figures 3-6 When the valve core 5 approaches the sealing block 6 under the action of the compressed gas flow, the blocking part 53 is attached to the upper side of the sealing block 6 to make the compressed gas impact the lower side of the piston part of the piston connecting rod 8 through the first air inlet channel 31, the second air inlet hole 43, the gas changing cavity 42, the gas passing part 52, the third air inlet groove 44, the fourth air inlet groove 61, the fifth air inlet groove 71, and the sixth air outlet hole 711, so that the piston connecting rod 8 rises. When the piston connecting rod 8 rises, the piston compresses the gas in the cylinder barrel 7 and forces the valve core 5 to rise, and after the valve core 5 rises, the blocking part 53 thereof is attached to the upper side of the gas changing cavity 42, so that the gas flow cannot enter the third air inlet groove 44 any more, and the piston connecting rod 8 loses the upward pushing force, when the lower side of the piston part of the piston connecting rod 8 is higher than the pressure relief hole 72 in the process of upward movement, the gas flow is discharged through the pressure relief hole 72 and the piston connecting rod 8 falls down under the condition of losing the upward pushing force. Such a cycle continues, so that the piston connecting rod 8 drives the blade to quickly move up and down to cut the material.

[0048] Reference Figure 3 and Figure 4, in order to ensure that the valve core 5 in the process of rapid up and down reciprocating each time can be timely dropped, the upper side of the blocking part 53 is provided with a round corner part 531, so that when the gas flow enters from the second air inlet hole 43, the gas flow is more smooth through the round corner part 531 to the upper side of the blocking part 53, and a downward pressure is generated on the blocking part 53, so that the valve core 5 can timely drop and block the sealing gas hole 62.

[0049] Reference Figure 3 And Figure 4 , in order to ensure that the valve core 5 in the process of rapid up and down reciprocating each time can be timely dropped, the upper side of the blocking part 53 is provided with a round corner part 531, so that when the gas flow enters from the second air inlet hole 43, the gas flow is more smooth through the round corner part 531 to the upper side of the blocking part 53, and a downward pressure is generated on the blocking part 53, so that the valve core 5 can timely drop and block the sealing gas hole 62.

[0050] Reference Figure 3 And Figure 4 , in order to further ensure that the valve core 5 can be subjected to sufficient upward thrust, the lower side of the blocking part 53 is provided with a gas collecting cavity 534, when the piston connecting rod 8 moves towards the valve core 5, the gas between the piston connecting rod 8 and the valve core 5 is compressed and enters the gas collecting cavity 534 to provide upward thrust for the valve core 5. The gas collecting cavity 534 can be a semicircular cavity, which can accommodate more gas.

[0051] Reference Figure 3 And Figure 6 , the bottom of the air inlet block 3 is provided with an air inlet cavity 32, and the first air inlet hole 31 communicates with the air inlet cavity 32, so that the gas flow directly enters the air inlet cavity 32 from the first air inlet hole 31. The air inlet cavity 32 communicates with the second air inlet hole 43, and the first air inlet hole 31 is vertically arranged. By providing the air inlet cavity 32 at the bottom of the air inlet block 3, the first air inlet hole 31 can be directly vertically arranged without precise butt joint with one end of the second air inlet hole 43, thereby reducing the processing difficulty. And compared with the obliquely arranged first air inlet hole, the vertically arranged first air inlet hole 31 can intake air faster.

[0052] Reference Figure 5In order to ensure the accuracy of the relative positions among the air valve block 4, the sealing block 6 and the cylinder barrel 7, at least two positioning pins 73 are arranged on the cylinder barrel 7, the positioning pins 73 pass through the sealing block 6 and the air valve block 4, and the relative positions among the air valve block 4, the sealing block 6 and the cylinder barrel 7 are ensured.

[0053] With reference to Figures 2-6 The first damping spring 12 is arranged between the air inlet block 3 and the upper cover 2, and the second damping spring 13 is arranged between the guide sleeve 11 and the cutter barrel 1, so that the vibration during high-speed reciprocating motion is reduced, and the cutting precision is improved.

[0054] With reference to Figure 1 、 Figure 2 and Figure 5 The piston connecting rod 8 is extended with a semicircular limiting block 81 at the end, the cutter clamp 9 is provided with a semicircular mounting hole 91 matched with the semicircular limiting block 81 and a cutter groove communicated with the semicircular mounting hole 91, the cutter blade is inserted into the cutter groove, the cutter clamp 9 is provided with a threaded hole 93 communicated with the cutter groove, and a mounting screw for abutting the cutter blade against the semicircular limiting block 81 is connected in the threaded hole 93, so that the semicircular limiting block 81 limits the rotation of the cutter clamp 9, and the cutter clamp 9 is fixed on the end of the piston connecting rod 8 by abutting the cutter blade against the semicircular limiting block 81. The cutter sleeve 94 is connected with the end of the cutter barrel 1, and the cutter clamp 9 is mounted on the cutter sleeve 94.

[0055] With reference to Figure 2 In order to reduce the noise generated by airflow during work, a plurality of silencers 22 are arranged on the upper cover 2.

[0056] With reference to Figure 7 As another scheme for reducing the noise of airflow, the mounting ring groove 23 is arranged on the upper cover 2, the sound insulation cotton 24 is filled in the mounting ring groove 23, and the top cover 25 is arranged on the upper cover 2, and the sound insulation cotton 24 is fixed in the upper cover 2 through the top rod, so that the noise of airflow is reduced.

[0057] With reference to Figures 1-6 In order to better improve the reciprocating speed and fluency of the piston connecting rod 8, a wear-resistant lubricating coating can be coated on the piston of the piston connecting rod 8.

[0058] With reference to Figure 5 and Figure 6 In order to increase the sealing performance of the connection between the sealing block 6 and the cylinder barrel 7, the sealing gasket 14 is arranged between the sealing block 6 and the cylinder barrel 7.

[0059] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A high-frequency cutting blade, characterized in that, include: The tool barrel (1) and the guide sleeve (11) are arranged inside the tool barrel (1). One end of the tool barrel (1) is provided with a top cover (2). The top cover (2) is provided with an air inlet pipe (21) that communicates with the inside of the tool barrel (1). The air inlet pipe (21) is connected to an air inlet block (3) arranged in the guide sleeve (11). The air inlet block (3) has a first air inlet channel (31). A valve block (4) is provided on one side of the air inlet block (3). An air passage is provided inside the valve block (4). A valve core is slidably fitted inside the valve block (4). 5) The valve core (5) is used to switch the flow direction of the airflow in the air passage within the valve block (4). A sealing block (6) is provided on one side of the valve block (4), and a cylinder (7) is provided on one side of the sealing block (6). A piston connecting rod (8) is slidably fitted inside the cylinder (7). The first air inlet (31) is connected to the valve block (4) and the cylinder (7) and cooperates with the valve core (5) to control the reciprocating motion of the piston connecting rod (8). A blade clip (9) is connected to the piston connecting rod (8), and a blade is connected to the blade clip (9).

2. The high-frequency cutting blade according to claim 1, characterized in that: The valve core (5) includes a guide portion (51), an air passage portion (52), and a sealing portion (53). The air valve block (4) has a valve cavity that cooperates with the valve core (5). The valve cavity includes a guide hole (41) and an air exchange chamber (42). The guide part (51) is slidably engaged with the guide hole (41), and the sealing part (53) is slidably engaged with the air exchange chamber (42) to change the direction of airflow. The air passage includes a second air inlet (43) and a third air inlet groove (44) opened in the air valve block (4). The second air inlet (43) is connected to the air exchange chamber (42), and the third air inlet groove (44) is opened on the side of the air valve block (4) and is connected to the air passage part (52). The sealing block (6) is provided with a fourth air inlet groove (61) and a sealing air hole (62). The fourth air inlet groove (61) is located on the side of the sealing block (6) and communicates with the third air inlet groove (44). The sealing air hole (62) is located below the blocking part (53) and cooperates with the blocking part (53) to switch the opening and closing of the air inlet. The cylinder barrel (7) is provided with a fifth air inlet groove (71) and a pressure relief hole (72). The fifth air inlet groove (71) is located on the side of the cylinder barrel (7) and communicates with the fourth air inlet groove (61). The fifth air inlet groove (71) is provided with a sixth air outlet hole (711). The sixth air outlet hole (711) is located below the piston part of the piston connecting rod (8) and is used to push the piston connecting rod (8). The pressure relief hole (72) is located on the side of the cylinder barrel (7).

3. A high-frequency cutting blade according to claim 2, characterized in that: The upper side of the sealing part (53) is provided with a rounded corner (531) so that the airflow passes through the rounded corner (531) and generates downward pressure on the sealing part (53).

4. A high-frequency cutting blade according to claim 2 or 3, characterized in that: A stepped clearance groove (532) is provided on the periphery of the lower side of the sealing part (53) so that a sealing protrusion (533) is formed on the bottom surface of the sealing part (53). The sealing protrusion (533) cooperates with the sealing vent (62) of the sealing block to control the opening and closing of the sealing vent (62).

5. A high-frequency cutting blade according to claim 2 or 3, characterized in that: The lower side of the sealing part (53) is provided with a gas collecting chamber (534). When the piston rod (8) moves toward the valve core (5), the gas between the piston rod (8) and the valve core (5) is compressed and enters the gas collecting chamber (534) to provide an upward force for the valve core (5).

6. A high-frequency cutting blade according to claim 2, characterized in that: The bottom of the air intake block (3) is provided with an air intake cavity (32), the first air intake channel (31) is connected to the air intake cavity (32), and the air intake cavity (32) is connected to the second air intake hole (43).

7. A high-frequency cutting blade according to claim 2, characterized in that: The first air intake channel (31) is vertically arranged.

8. A high-frequency cutting blade according to claim 1, characterized in that: At least two positioning pins (73) are provided on the cylinder barrel (7), and the positioning pins (73) pass through the sealing block (6) and the valve block (4).

9. A high-frequency cutting blade according to claim 1, characterized in that: A first damping spring (12) abuts between the air intake block (3) and the upper cover (2), and a second damping spring (13) abuts between the guide sleeve (11) and the knife barrel (1).

10. A high-frequency cutting blade according to claim 1, characterized in that: The piston connecting rod (8) extends to a semi-circular limiting block (81) at its end. The blade holder (9) has a semi-circular mounting hole (91) that mates with the semi-circular limiting block (81) and a blade groove that communicates with the semi-circular mounting hole (91). The blade is inserted into the blade groove. The blade holder (9) has a threaded hole (93) that communicates with the blade groove. The threaded hole (93) is connected to a mounting screw for pressing the blade against the semi-circular limiting block (81).

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