Flexible clamping device for metal plate

Abstract

The invention belongs to the technical field of sheet metal clamping devices, and discloses a flexible sheet metal clamping device which comprises a clamping seat, a lower clamping plate is fixedly mounted at the bottom end of the clamping seat, an upper clamping plate is arranged above the lower clamping plate, a moving seat is fixedly connected to one side of the upper clamping plate and slidably mounted in the clamping seat, and a first threaded rod is in threaded connection with the inner wall of the moving seat; a motor is installed at the bottom end of the first threaded rod, pressing rods are evenly installed in the lower clamping plate and the upper clamping plate, a first spring is arranged at one end of each pressing rod, and when a sheet metal part is clamped, the sheet metal part is firstly placed at the top end of the lower clamping plate, then the motor is started, and the upper clamping plate moves downwards to be matched with the lower clamping plate to clamp the sheet metal part; the contact area between a traditional clamp and a special-shaped sheet metal part, especially a sheet metal part with a curved surface, is increased through the multiple pressing rods, and when the pressing rods are subjected to external force, the pressing rods slide into the lower clamping plate or the upper clamping plate to enable the first springs to elastically deform, so that flexible clamping of the sheet metal part is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of sheet metal clamping devices, in particular to a sheet metal flexible clamping device. Background Art

[0002] As the manufacturing industry shifts toward high-variety, small-batch, and customized production, sheet metal processing faces significant challenges. Traditional rigid fixtures are unable to quickly adapt to workpieces of varying sizes and shapes, resulting in long production preparation times, low equipment utilization, and high manufacturing costs. To address these issues, flexible clamping technology has emerged. After searching, such as patent: CN220481662U, a flexible clamp for automobile sheet metal, including a workbench and a movable frame slidably installed on both sides of the top of the workbench, the tops of the two movable frames are each installed with a downward pressing component, and the bottoms of the two movable frames are fixedly installed with a movable plate, the surfaces of the two movable plates are slidably installed with the interior of the workbench, and the automobile sheet metal is placed at the center of the top of the workbench, and the two first electric push rods are started. The movable frame drives the clamping plate to clamp the automobile sheet metal in the horizontal direction, and the clamping plate drives the balance bar to slide in the movable frame, and at the same time the second spring is stretched to flexibly clamp the automobile sheet metal in the horizontal direction; the second electric push rod is started to drive the bottom lower pressure plate to press down, and at the same time the lower pressure plate drives the bottom flexible pressing member to press the automobile sheet metal in the vertical direction, and the bottom of the lower pressure frame contacts the automobile sheet metal to squeeze the first spring to compress, thereby flexibly clamping the automobile sheet metal in the vertical direction; The current sheet metal flexible clamping device clamps the sheet metal parts by installing a spring on one side of the clamping plate. Although this has improved the shortcomings of traditional rigid clamps to a certain extent, since the traditional clamping plate is a whole plate, it can only apply pressure through local point contact when fixing some special-shaped sheet metal parts, especially curved sheet metal parts, which can easily cause stress concentration in the workpiece, resulting in deformation or surface damage. Summary of the Invention

[0003] The object of the present invention is to provide a flexible sheet metal clamping device to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sheet metal flexible clamping device, The clamping base comprises a clamping base, a lower clamping plate is fixedly mounted on the bottom end of the clamping base, an upper clamping plate is provided above the lower clamping plate, a movable base is fixedly connected to one side of the upper clamping plate, the movable base is slidably mounted inside the clamping base, a first threaded rod is threadedly connected to the inner wall of the movable base, and a motor is mounted on the bottom end of the first threaded rod; The interiors of the lower and upper splints are evenly provided with pressure rods, one end of each pressure rod is provided with a first spring, and the interiors of the lower and upper splints are provided with adjustment components.

[0005] As a further technical solution of the present invention, a buffer pad is fixedly installed on one side of the lower clamping plate and the upper clamping plate, and a cleaning component is provided on one side of the buffer pad.

[0006] As a further technical solution of the present invention, the adjustment assembly includes a mounting plate slidably mounted inside the upper clamping plate, the inner wall of the mounting plate is threadedly connected to a second threaded rod, and the second threaded rod is rotatably mounted inside the upper clamping plate.

[0007] As a further technical solution of the present invention, both sides of the mounting plate are fixedly connected with indicator signs, and the indicator signs are slidably mounted on the inner wall of the upper clamping plate.

[0008] As a further technical solution of the present invention, the cleaning assembly includes a first air blowing tube arranged on one side of the buffer pad, the top end of the first air blowing tube is fixedly connected to a first connecting tube, two first connecting tubes are provided, the two first connecting tubes are both embedded in the interior of the clamping seat, the bottom ends of the two first connecting tubes are connected to an air bag, one side of the two air bags is fixedly connected to a second connecting tube, the bottom ends of the two second connecting tubes are fixedly installed with a third connecting tube, the bottom ends of the third connecting tubes are evenly installed with second air blowing tubes, and the second air blowing tubes are arranged above the lower clamping plate; A pressure plate is installed at the top of the airbag, and a reciprocating screw rod is threadedly connected to the inner wall of the pressure plate. A gear is fixedly installed at the top of the reciprocating screw rod, and a tooth block is meshed and connected to one side of the gear. The tooth block is installed inside the rotating wheel, and the rotating wheel is fixedly installed at the top of the first threaded rod.

[0009] As a further technical solution of the present invention, a bellows is installed between the first connecting pipe and the upper clamping plate.

[0010] As a further technical solution of the present invention, a rotating shaft is fixedly mounted on the inner wall of the gear block, and the rotating shaft is rotatably mounted on the inner wall of the rotating wheel.

[0011] As a further technical solution of the present invention, the tooth block is rotatably mounted inside the rotating wheel, and a second spring is provided between the tooth block and the rotating wheel.

[0012] As a further technical solution of the present invention, the bottom end of the airbag is fixedly connected to an air intake pipe, and the air intake pipe is embedded in the interior of the clamping seat.

[0013] As a further technical solution of the present invention, the first connecting pipe, the air intake pipe and the outside of the air intake pipe are all installed with a one-way valve.

[0014] The beneficial effects of the present invention are as follows: The present invention evenly arranges the pressure rods. When clamping the sheet metal, the sheet metal is first placed on the top of the lower clamping plate, and then the motor is started. When the motor is started, the first threaded rod is driven to rotate. The rotation of the first threaded rod drives the movement of the movable seat. The movement of the movable seat drives the movement of the upper clamping plate, so that the upper clamping plate moves downward and cooperates with the lower clamping plate to clamp the sheet metal. Multiple pressure rods are used to increase the contact area between the traditional clamp and special-shaped sheet metal, especially curved sheet metal. When the pressure rod is subjected to external force, it slides into the lower clamping plate or the upper clamping plate to cause the first spring to undergo elastic deformation, thereby adapting to the shape and size changes of the sheet metal, avoiding stress concentration or deformation that may be caused by rigid clamping, and thus achieving flexible clamping of the sheet metal.

[0015] The present invention adjusts the setting of the component. When different sheet metal parts need to be clamped, the second threaded rod is rotated to drive the mounting plate to move inside the lower clamping plate or the upper clamping plate, thereby changing the distance that the first spring moves inside the lower clamping plate or the upper clamping plate, and adjusting the clamping force of the clamp. This not only improves the adaptability of the device, but also during long-term use, when the load changes, the compression rod can always be in a suitable working state by adjusting the telescopic length of the first spring, avoiding fatigue damage to the first spring due to long-term exposure to excessive or insufficient loads, thereby extending the service life of the compression rod.

[0016] The present invention is provided with a cleaning component. When the sheet metal is loosened after work, the first threaded rod is rotated to drive the movable seat to move upward. The rotation of the first threaded rod drives the rotating wheel to rotate. The rotation of the rotating wheel drives the rotation of the gear. The rotation of the gear drives the rotation of the reciprocating screw. When the reciprocating screw rotates, it drives the pressure plate to first move downward and then upward. When the pressure plate moves downward, the airbag is compressed. The gas inside the airbag is discharged from the first connecting pipe and the second connecting pipe respectively. The first connecting pipe is connected to the side of the buffer pad installed at the bottom of the upper splint through the first blowing pipe to blow air. The second connecting pipe is connected to the third connecting pipe and the second blowing pipe through the third connecting pipe and the second blowing pipe. Connect and blow air toward one side of the buffer pad installed on the top of the downward clamping plate to blow away impurities or metal debris attached to one side of the two buffer pads to prevent the sheet metal from generating a large amount of metal debris during processing, such as cutting, stamping, drilling, etc. These debris may adhere to the surface of the buffer pad. If they are not removed, the debris may be pressed into the surface of the sheet metal when the sheet metal is clamped next time, causing surface scratches or affecting the processing accuracy. Blowing away the metal debris by blowing air can remove residual debris and reduce the impact of impurities such as metal debris on precision sheet metal parts, thereby ensuring the appearance quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2A schematic diagram of the structure at center A; Figure 4 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle; Figure 5 This is a schematic cross-sectional view of the structure of the rotating wheel of the present invention; Figure 6 It is a front view of the overall structure of the present invention; Figure 7 It is a schematic cross-sectional view of the structure of the upper splint of the present invention.

[0018] In the figure: 1. Clamping seat; 2. Lower clamping plate; 3. Upper clamping plate; 4. Pressure rod; 5. First spring; 6. Moving seat; 7. First threaded rod; 8. Motor; 9. Buffer pad; 10. Mounting plate; 11. Second threaded rod; 12. Rotating wheel; 13. Gear block; 14. Gear; 15. Reciprocating screw; 16. Pressure plate; 17. Airbag; 18. First connecting pipe; 19. Bellows; 20. First air blowing pipe; 21. Second connecting pipe; 22. Third connecting pipe; 23. Second air blowing pipe; 24. Inlet pipe; 25. One-way valve; 26. Rotating shaft; 27. Second spring; 28. Instruction plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, in the embodiment of the present invention, the sheet metal flexible clamping device includes a clamping base 1, a lower clamping plate 2 is fixedly installed at the bottom end of the clamping base 1, an upper clamping plate 3 is provided above the lower clamping plate 2, a movable base 6 is fixedly connected to one side of the upper clamping plate 3, and the movable base 6 is slidably installed inside the clamping base 1, a first threaded rod 7 is threadedly connected to the inner wall of the movable base 6, and a motor 8 is installed at the bottom end of the first threaded rod 7; Pressure rods 4 are evenly installed inside the lower splint 2 and the upper splint 3. A first spring 5 is provided at one end of each pressure rod 4. Adjustment components are provided inside the lower splint 2 and the upper splint 3.

[0021] When clamping the sheet metal, first place the sheet metal on the top of the lower clamping plate 2, and then start the motor 8. When the motor 8 is started, it drives the first threaded rod 7 to rotate. The rotation of the first threaded rod 7 drives the movement of the movable seat 6. The movement of the movable seat 6 drives the movement of the upper clamping plate 3, so that the upper clamping plate 3 moves down and cooperates with the lower clamping plate 2 to clamp the sheet metal. A plurality of pressure rods 4 are used to increase the contact area between the traditional clamp and the special-shaped sheet metal, especially the curved sheet metal. When the pressure rod 4 is subjected to external force, it slides into the lower clamping plate 2 or the upper clamping plate 3 to cause the first spring 5 to undergo elastic deformation, thereby adapting to the shape and size changes of the sheet metal, avoiding stress concentration or deformation that may be caused by rigid clamping, and thus realizing flexible clamping of the sheet metal.

[0022] like Figures 1 to 7 As shown, a buffer pad 9 is fixedly mounted on one side of the lower clamping plate 2 and the upper clamping plate 3 , and a cleaning component is provided on one side of the buffer pad 9 .

[0023] The buffer pad 9 is flexible and wraps the pressure rod 4 on one side of the lower splint 2 or the upper splint 3; The flexible buffer pad 9 has good softness and buffering performance, can evenly disperse the pressure of the pressure rod 4 on the sheet metal, avoid excessive local pressure, and effectively prevent scratches, indentations and other damages on the surface of the sheet metal, and can ensure the appearance quality of the sheet metal.

[0024] like Figure 3 and Figure 7 As shown, the adjustment assembly includes a mounting plate 10 slidably mounted inside the upper clamping plate 3 , an inner wall of the mounting plate 10 is threadedly connected to a second threaded rod 11 , and the second threaded rod 11 is rotatably mounted inside the upper clamping plate 3 .

[0025] When different sheet metal parts need to be clamped, the second threaded rod 11 is rotated to drive the mounting plate 10 to move inside the lower clamping plate 2 or the upper clamping plate 3, thereby changing the distance that the first spring 5 moves inside the lower clamping plate 2 or the upper clamping plate 3 and adjusting the clamping force. This not only improves the adaptability of the device, but also during long-term use, when the load changes, the compression rod 4 can always be in a suitable working state by adjusting the telescopic length of the first spring 5, thereby avoiding fatigue damage to the first spring 5 due to long-term exposure to excessive or insufficient loads, thereby extending the service life of the compression rod 4.

[0026] like Figure 1 、 Figure 2 and Figure 7 As shown, indicator signs 28 are fixedly connected to both sides of the mounting plate 10 , and the indicator signs 28 are slidably mounted on the inner wall of the upper clamping plate 3 .

[0027] A first chute is provided on both sides of the lower splint 2 and the upper splint 3, and an indicator plate 28 is embedded in the first chute. Scales are provided on both sides of the first chute for staff to check the specific adjustment values ​​for easy adjustment.

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 6 As shown, the cleaning assembly includes a first air blowing tube 20 arranged on one side of the buffer pad 9, the top of the first air blowing tube 20 is fixedly connected to the first connecting tube 18, two first connecting tubes 18 are provided, the two first connecting tubes 18 are both embedded in the interior of the clamping seat 1, the bottom ends of the two first connecting tubes 18 are connected to the airbag 17, one side of the two airbags 17 is fixedly connected to the second connecting tube 21, the bottom ends of the two second connecting tubes 21 are fixedly installed with a third connecting tube 22, the bottom ends of the third connecting tubes 22 are evenly installed with second air blowing tubes 23, and the second air blowing tubes 23 are arranged above the lower clamping plate 2; A pressure plate 16 is installed at the top of the airbag 17, and the inner wall of the pressure plate 16 is threadedly connected to a reciprocating screw rod 15. A gear 14 is fixedly installed on the top of the reciprocating screw rod 15. One side of the gear 14 is meshed with a tooth block 13. The tooth block 13 is installed inside the rotating wheel 12, and the rotating wheel 12 is fixedly installed on the top of the first threaded rod 7.

[0029] When the sheet metal is loosened after work, the movable seat 6 is moved up by rotating the first threaded rod 7 in the same way, the rotation of the first threaded rod 7 drives the rotating wheel 12 to rotate, the rotation of the rotating wheel 12 drives the rotation of the gear 14, the rotation of the gear 14 drives the rotation of the reciprocating screw 15, and the reciprocating screw 15 drives the pressure plate 16 to go down first and then up when the reciprocating screw 15 rotates. When the pressure plate 16 moves down, the airbag 17 is compressed, and the gas inside the airbag 17 is discharged from the first connecting pipe 18 and the second connecting pipe 21 respectively. The first connecting pipe 18 is connected to the side of the buffer pad 9 installed at the bottom of the upper splint 3 through the first blowing pipe 20 to blow air, and the second connecting pipe 21 is connected to the third connecting pipe to blow air. The pipe 22 and the second blowing pipe 23 are connected to the side of the buffer pad 9 installed on the top of the lower clamping plate 2 to blow air to blow away the impurities or metal debris attached to one side of the two buffer pads 9 to prevent the sheet metal from generating a large amount of metal debris during processing, such as cutting, stamping, drilling, etc. These debris may adhere to the surface of the buffer pad 9. If they are not removed, the debris may be pressed into the surface of the sheet metal when the sheet metal is clamped next time, causing surface scratches or affecting the processing accuracy. Blowing away the metal debris by blowing air can remove residual debris and reduce the impact of impurities such as metal debris on precision sheet metal parts, thereby ensuring the appearance quality of the product.

[0030] like Figure 1 and Figure 2 As shown, a bellows 19 is installed between the first connecting pipe 18 and the upper clamping plate 3 .

[0031] The expansion and contraction performance of the bellows 19 ensures the connection between the first connecting pipe 18 and the first blowing pipe 20 during the movement of the upper clamping plate 3 .

[0032] like Figure 3 and Figure 5 As shown, a rotating shaft 26 is fixedly mounted on the inner wall of the gear block 13 , and the rotating shaft 26 is rotatably mounted on the inner wall of the rotating wheel 12 .

[0033] One side of the gear block 13 is set as an inclined surface, and a second sliding groove for the gear block 13 to rotate is opened inside the rotating wheel 12; During operation, when the upper clamping plate 3 moves down to clamp the workpiece, the rotation of the first threaded rod 7 drives the rotation of the rotating wheel 12, and the rotation of the rotating wheel 12 drives the rotation of the tooth block 13. When the tooth block 13 contacts the gear 14, the tooth block 13 is forced to slide into the second sliding groove and the gear 14 does not rotate, so that no air is blown during clamping.

[0034] like Figure 3 and Figure 5 As shown, the tooth block 13 is rotatably mounted inside the rotating wheel 12 , and a second spring 27 is provided between the tooth block 13 and the rotating wheel 12 .

[0035] When the gear block 13 rotates in the second sliding groove, the second spring 27 is deformed to store elastic potential energy, and the elastic potential energy is released by the second spring 27 to rotate and reset the gear block 13.

[0036] like Figure 2 and Figure 4 As shown, the bottom end of the air bag 17 is fixedly connected to an air intake pipe 24 , and the air intake pipe 24 is embedded in the interior of the clamping base 1 .

[0037] The bottom of the pressure plate 16 is fixedly connected to the top of the air bag 17; When the pressure plate 16 moves upward and resets, it drives the airbag 17 to move upward and deploy, so that external air enters the airbag 17 from the air inlet pipe 24, causing the airbag 17 to store air.

[0038] like Figure 2 and Figure 4 As shown, the first connecting pipe 18 , the air intake pipe 24 and the outside of the air intake pipe 24 are all installed with a one-way valve 25 .

[0039] The gas inside the airbag 17 can be discharged only from the first connecting pipe 18 and the second connecting pipe 21 , and external gas enters the airbag 17 from the air inlet pipe 24 .

[0040] Working principle and usage process: When the sheet metal needs to be clamped, the second threaded rod 11 is first rotated to drive the mounting plate 10 to move inside the lower clamping plate 2 or the upper clamping plate 3, thereby changing the distance that the first spring 5 moves inside the lower clamping plate 2 or the upper clamping plate 3 and adjusting the clamping force of the clamp; Then, the sheet metal is placed on the top of the lower clamping plate 2, and the motor 8 is started. When the motor 8 is started, the first threaded rod 7 is driven to rotate. The rotation of the first threaded rod 7 drives the movement of the movable seat 6. The movement of the movable seat 6 drives the movement of the upper clamping plate 3, so that the upper clamping plate 3 moves downward and cooperates with the lower clamping plate 2 to clamp the sheet metal. When the pressure rod 4 is subjected to an external force, it slides into the lower clamping plate 2 or the upper clamping plate 3 to cause the first spring 5 to elastically deform, thereby adapting to the shape and size changes of the sheet metal part and achieving flexible clamping of the sheet metal part; When the sheet metal is clamped and released, the motor 8 is started again to drive the first threaded rod 7 to rotate. The rotation of the first threaded rod 7 drives the rotating wheel 12 to rotate. The rotation of the rotating wheel 12 drives the rotation of the gear 14. The rotation of the gear 14 drives the rotation of the reciprocating screw 15. When the reciprocating screw 15 rotates, it drives the pressure plate 16 to move downward, so that the pressure plate 16 compresses the airbag 17. The gas inside the airbag 17 is discharged from the first connecting tube 18 and the second connecting tube 21 respectively. The first connecting tube 18 is connected to the side of the buffer pad 9 installed at the bottom of the upper splint 3 through the first blowing tube 20 to blow air. The second connecting tube 21 is connected to the side of the buffer pad 9 installed at the top of the lower splint 2 through the third connecting tube 22 and the second blowing tube 23 to blow air, so as to blow away impurities or metal debris on one side of the buffer pad 9 and clean it.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flexible sheet metal clamping device, comprising a clamping seat (1), characterized in that: A lower clamping plate (2) is fixedly mounted on the bottom end of the clamping seat (1), an upper clamping plate (3) is provided above the lower clamping plate (2), a movable seat (6) is fixedly connected to one side of the upper clamping plate (3), the movable seat (6) is slidably mounted inside the clamping seat (1), a first threaded rod (7) is threadedly connected to the inner wall of the movable seat (6), and a motor (8) is mounted on the bottom end of the first threaded rod (7); Pressure rods (4) are evenly installed inside the lower clamping plate (2) and the upper clamping plate (3), and a first spring (5) is provided at one end of each pressure rod (4). Adjustment components are also provided inside the lower clamping plate (2) and the upper clamping plate (3).

2. The sheet metal flexible clamping device according to claim 1, characterized in that: A buffer pad (9) is fixedly mounted on one side of the lower clamping plate (2) and the upper clamping plate (3), and a cleaning component is provided on one side of the buffer pad (9).

3. The sheet metal flexible clamping device according to claim 1, characterized in that: The adjustment assembly comprises a mounting plate (10) slidably mounted inside the upper clamping plate (3); an inner wall of the mounting plate (10) is threadedly connected to a second threaded rod (11); and the second threaded rod (11) is rotatably mounted inside the upper clamping plate (3).

4. The sheet metal flexible clamping device according to claim 3, characterized in that: Both sides of the mounting plate (10) are fixedly connected with indicator signs (28), and the indicator signs (28) are slidably mounted on the inner wall of the upper clamping plate (3).

5. The sheet metal flexible clamping device according to claim 2, characterized in that: The cleaning assembly includes a first air blowing tube (20) arranged on one side of the buffer pad (9), the top end of the first air blowing tube (20) is fixedly connected to the first connecting tube (18), two first connecting tubes (18) are provided, the two first connecting tubes (18) are both embedded in the interior of the clamping seat (1), the bottom ends of the two first connecting tubes (18) are connected to the airbag (17), one side of the two airbags (17) is fixedly connected to the second connecting tube (21), the bottom ends of the two second connecting tubes (21) are fixedly installed with a third connecting tube (22), the bottom ends of the third connecting tubes (22) are evenly installed with second air blowing tubes (23), and the second air blowing tubes (23) are arranged above the lower clamping plate (2); A pressure plate (16) is installed at the top of the airbag (17), and a reciprocating screw (15) is threadedly connected to the inner wall of the pressure plate (16). A gear (14) is fixedly installed at the top of the reciprocating screw (15), and a tooth block (13) is meshedly connected to one side of the gear (14). The tooth block (13) is installed inside the rotating wheel (12), and the rotating wheel (12) is fixedly installed at the top of the first threaded rod (7).

6. The sheet metal flexible clamping device according to claim 5, characterized in that: A bellows (19) is installed between the first connecting pipe (18) and the upper clamping plate (3).

7. The sheet metal flexible clamping device according to claim 5, characterized in that: A rotating shaft (26) is fixedly mounted on the inner wall of the tooth block (13), and the rotating shaft (26) is rotatably mounted on the inner wall of the rotating wheel (12).

8. The sheet metal flexible clamping device according to claim 5, characterized in that: The tooth block (13) is rotatably mounted inside the rotating wheel (12), and a second spring (27) is provided between the tooth block (13) and the rotating wheel (12).

9. The sheet metal flexible clamping device according to claim 5, characterized in that: The bottom end of the air bag (17) is fixedly connected to an air intake pipe (24), and the air intake pipe (24) is embedded in the interior of the clamping seat (1).

10. The sheet metal flexible clamping device according to claim 5, characterized in that: The first connecting pipe (18), the air intake pipe (24), and the outside of the air intake pipe (24) are all installed with a one-way valve (25).

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