Cutting bed

Abstract

The utility model relates to a cutting bed which comprises a machine frame, and the machine frame is provided with a feeding conveying belt, a discharging conveying belt, a film covering frame, a cutting knife, a pressure maintaining structure and an adsorption system for vacuumizing materials located on the feeding conveying belt. The adsorption system comprises an exhaust fan, an air inlet structure connected to the inlet end of the exhaust fan and an exhaust manifold connected to the outlet end of the exhaust fan, and the air inlet structure comprises an air inlet main chamber with the upper end closed through the feeding end conveying belt and an air inlet pipe communicated with the air inlet main chamber and the inlet end of the exhaust fan; the pressure maintaining structure comprises a front sealing plate and a rear sealing plate, wherein the front sealing plate is used for sealing the part, located in front of the cutting knife, of the materials on the feeding conveying belt, and the rear sealing plate is used for sealing the part, located behind the cutting knife, of the materials on the feeding conveying belt. The utility model provides the cutting bed which is high in precision when the fluffy fabric is cut, and the problem that the precision is low when the fluffy fabric is cut by an existing cutting bed is solved.

Description

Technical Field

[0001] This utility model relates to the field of fabric cutting technology, and in particular to a cutting bed. Background Technology

[0002] In production and daily life, it is necessary to cut fluffy fabrics. However, due to the fluffiness of the fabrics, the cutting accuracy is poor. In addition, the existing equipment has the drive motor and operating table located on both sides of the frame, which does not allow operation on either side as needed. Utility Model Content

[0003] This invention provides a cutting bed with high precision when cutting fluffy fabrics, solving the problem of low precision when cutting fluffy fabrics with existing cutting beds.

[0004] The above technical problems are solved by the following technical solution: a cutting bed, including a frame, the frame having a feeding conveyor belt, a discharging conveyor belt connected to the discharging end of the feeding conveyor belt, a film-coating frame set at the feeding end of the feeding conveyor belt, a cutting blade for cutting the film-coated material on the feeding conveyor belt, a pressure-holding structure for holding pressure on the portion of the material located on both sides of the cutting blade along the material conveying direction, and an adsorption system for vacuuming the material located on the feeding conveyor belt, the adsorption system including an exhaust fan, an air intake structure connected to the inlet end of the exhaust fan, and an exhaust manifold connected to the outlet end of the exhaust fan, the air intake structure including an air intake chamber closed at the upper end by the feeding end conveyor belt and an air intake pipe connecting the air intake chamber and the inlet end of the exhaust fan, the pressure-holding structure including a front sealing plate for sealing the portion of the material on the feeding conveyor belt located in front of the cutting blade and a rear sealing plate for sealing the portion of the material on the feeding conveyor belt located behind the cutting blade. In use, the membrane roll is supported on the laminating frame. The material to be cut (such as sponge or other fluffy fabric) is fed from the feeding conveyor belt to the unloading conveyor belt. As the material moves from the feeding conveyor belt to the unloading conveyor belt, the membrane on the roll unfolds and covers the material to be cut, forming a laminated material. The laminated material reaches the cutting blade and is cut into pre-sized blocks. These blocks are then output via the unloading conveyor belt. As the material passes the cutting blade, it is vacuumed and flattened by the hollow compression mechanism, resulting in clean cuts. The maintenance structure prevents large air leakage areas after cutting, which could lead to poor vacuum compression.

[0005] Preferably, the front sealing plate includes a front left connecting frame, a front right connecting frame, front horizontal pressing shafts with their ends connected to the front left and front right connecting frames respectively, and a front annular flexible sealing sleeve simultaneously fitted on both front horizontal pressing shafts. The front annular flexible sealing sleeve is pressed against the material on the feeding conveyor belt by the front horizontal pressing shafts to seal the material. The front left and front right connecting frames are connected to the cutting blade. The rear sealing plate includes a rear left connecting frame, a rear right connecting frame, rear horizontal pressing shafts with their ends connected to the rear left and rear right connecting frames respectively, and a rear annular flexible sealing sleeve simultaneously fitted on both rear horizontal pressing shafts. The rear annular flexible sealing sleeve is pressed against the material on the feeding conveyor belt by the rear horizontal pressing shafts to seal the material. The rear left and rear right connecting frames are connected to the cutting blade. In use, the front and rear annular winding sealing sleeves are pressed against the material to be cut to prevent air leakage and maintain pressure. Pressure maintenance is convenient.

[0006] Preferably, the front horizontal pressing shaft tensions the front annular flexible sealing sleeve, and the rear horizontal pressing shaft tensions the rear annular flexible sealing sleeve. This results in a good sealing effect during sealing.

[0007] Preferably, both the rear annular flexible sealing sleeve and the front annular flexible sealing sleeve are membrane structures. They offer good flexibility and are lightweight.

[0008] Preferably, the membrane is a plastic membrane, which has good strength.

[0009] Preferably, the rear left connecting frame and the front left connecting frame are connected to the cutting blade via a left lifting mechanism, and the rear right connecting frame and the front right connecting frame are connected to the cutting blade via a right lifting mechanism. In use, the height of the pressing plate is adjusted according to the thickness of the material to be cut, ensuring reliable sealing and pressure retention.

[0010] Preferably, the two ends of the front horizontal pressing shaft are rotatably connected to the front left connecting frame and the front right connecting frame, and the two ends of the rear horizontal pressing shaft are rotatably connected to the rear left connecting frame and the rear right connecting frame. This can further reduce the resistance of the pressure-holding mechanism to the material's forward movement.

[0011] Preferably, the front pressing shaft includes a front roller and two front axle heads rotatably connected to both ends of the front roller, with each of the two front axle heads fixed to the front left connecting frame and the front right connecting frame in a one-to-one correspondence; the rear pressing shaft includes a rear roller and two rear axle heads rotatably connected to both ends of the rear roller, with each of the two rear axle heads fixed to the rear left connecting frame and the rear right connecting frame in a one-to-one correspondence. This provides a technical solution for rotatably connecting the horizontal pressing shaft to the connecting frames.

[0012] Preferably, the system also includes a control console. Both sides of the frame have control console interfaces for connection to the control console. The control console is detachably connected to one of these interfaces. The exhaust manifold includes an inlet section and an outlet section. The outlet section extends from one end of the frame across its width to the other. The inlet section is connected to the middle of the outlet section. Both ends of the outlet section can be detachably connected to an outlet pipe cover or an exhaust pipe. The outlet pipe cover and the exhaust pipe are each connected to one end of the outlet section. The motors driving the loading conveyor belt, the unloading conveyor belt, and the exhaust fan are all located below the frame. This allows both sides of the frame to be selectively used as operating sides. Existing systems only allow one side, and using both sides causes interference between the motors and the control panel.

[0013] Preferably, the air outlet section includes an air outlet section end ring, an outer air outlet section tube, and an inner air outlet section tube passing through the outer air outlet section tube. An air outlet section filling channel is formed between the outer and inner air outlet section tubes. The air outlet section filling channel is filled with air outlet section suction cotton. The inner air outlet section tube has several mesh holes. There are two air outlet section end rings, each correspondingly sealing one end of the air outlet section filling channel. An air inlet hole is provided in the middle of the inner air outlet section tube. The air inlet section passes through the outer air outlet section tube and connects to the air inlet hole. This design reduces noise generated during vacuum exhaust and allows the exhaust pipe to be connected to one end of the air outlet section while the other end is closed, enabling the cutting bed with this invention to better adapt to different spaces without the exhaust pipe interfering with installation.

[0014] Preferably, the outer circumferential surface of the inner pipe of the air outlet section is provided with a plurality of air outlet section inner pipe reflective rings distributed along the extension direction of the inner pipe of the air outlet section. The air outlet section inner pipe reflective rings extend circumferentially along the inner pipe of the air outlet section, and the air outlet section inner pipe reflective rings are provided with a plurality of air outlet section inner pipe sound transmission holes, which penetrate the air outlet section inner pipe reflective rings. This can increase the noise rebound area and improve the noise reduction effect.

[0015] Preferably, both end faces of the reflector ring in the inner tube of the air outlet section are conical surfaces, with one end larger than the other facing the air inlet. This results in better noise reduction.

[0016] Preferably, both the inner and outer pipes of the air outlet section are circular pipes, and the sound transmission holes on the reflective rings of adjacent inner pipes are staggered radially. When the peaks and troughs of the sound wave are circumferentially oriented towards the inner pipe, they can be disrupted by the pipe wall; when the peaks and troughs are radially oriented towards the inner pipe, they are disrupted by the sound transmission holes, thereby improving the noise reduction effect.

[0017] Preferably, the main air intake chamber is equipped with an isolation plate, which isolates an air intake cavity within the main air intake chamber. The isolation plate has filter holes in its isolation plate portion. The inlet end of the air intake pipe is located within the air intake cavity. A filter cover connected to the inlet end of the air intake pipe is installed within the air intake cavity. The filter cover has filter holes in its filter cover portion, the diameter of which is smaller than the diameter of the filter holes in the isolation plate portion. The filter cover has a tubular structure, with an end cap at one end and the other end connected to the inlet end of the air intake pipe. In use, the material conveyed at the feeding end is compressed by vacuuming. The vacuumed airflow flows sequentially through the main air intake chamber, the air intake cavity, and the filter cover before reaching the air intake pipe. During vacuuming, the chips generated during cutting by the cutting bed are filtered and blocked sequentially by the filter holes in the isolation plate portion and the filter holes in the filter cover portion, thereby preventing them from entering the exhaust fan and damaging the equipment or polluting the air.

[0018] Preferably, the air intake chamber wall is provided with a filter cover removal hole, and the end cap is detachably connected to the filter cover removal hole to close it. When the filter cover needs cleaning, the end cap is detached from the filter cover removal hole, and then the filter cover is removed. This facilitates filter cover maintenance.

[0019] Preferably, the air inlet cavity is provided with a tubular section, one end of which forms the filter cover disassembly hole, and the filter cover is inserted inside the tubular section. This allows airflow to converge and enter the air inlet duct.

[0020] This invention has the following advantages: it can be sealed and pressurized after the fabric is cut to maintain the adsorption and flattening effect, thereby avoiding bursting and improving the accuracy of subsequent cutting; it can be operated from both sides. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention from one perspective;

[0022] Figure 2 for Figure 1 A magnified view of a portion of point A;

[0023] Figure 3 for Figure 2 A magnified view of a portion of point B;

[0024] Figure 4 This is a three-dimensional structural diagram of the present invention with the bottom facing upwards.

[0025] Figure 5 This is a schematic diagram of the exhaust manifold;

[0026] Figure 6 This is a schematic diagram of the inner pipe of the air outlet section;

[0027] Figure 7 for Figure 6 A magnified view of a portion at point D;

[0028] Figure 8 This is a schematic diagram of the filter cover;

[0029] Figure 9 This is a schematic diagram showing the air intake chamber when part of the wall of the air intake chamber is removed, thus opening the air intake chamber.

[0030] Figure 10 for Figure 9 A magnified view of a portion of point E.

[0031] In the diagram: 1. Frame; 2. Feeding conveyor belt; 3. Cutting blade; 4. Front sealing plate; 5. Rear sealing plate; 6. Front right connecting frame; 7. Front horizontal pressing shaft; 8. Front annular flexible sealing sleeve; 9. Front axle head; 10. Rear left connecting frame; 11. Rear right connecting frame; 12. Rear horizontal pressing shaft; 13. Rear annular flexible sealing sleeve; 14. Rear roller; 15. Rear axle head; 16. Left lifting mechanism; 17. Right lifting mechanism; 18. Film covering frame; 19. Control console; 20. Exhaust pipe; 31. Unloading conveyor belt; 32. Drawer. Fan 33, exhaust manifold 34, air inlet chamber 35, air inlet pipe 36, air inlet section 37, air outlet section 38, outer pipe of air outlet section 39, inner pipe of air outlet section 40, filling channel of air outlet section 41, mesh of inner pipe of air outlet section 52, air inlet hole 42, reflective ring of inner pipe of air outlet section 43, sound transmission hole of inner pipe of air outlet section 44, isolation plate 45, air inlet cavity 46, filter hole of isolation plate section 47, filter cover 48, filter hole of filter cover section 49, end cap 50, tubular section 51. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] See Figures 1 to 10 A cutting bed includes a frame 1. The frame is provided with a feeding conveyor belt 2, a discharging conveyor belt 32 connected to the discharging end of the feeding conveyor belt, a film-coating frame 19 disposed at the feeding end of the feeding conveyor belt, a cutting blade 3 for cutting the film-coated material on the feeding conveyor belt, a pressure-holding structure for holding pressure on the portions of the material located on both sides of the cutting blade along the material conveying direction, and an adsorption system for vacuuming the material located on the feeding conveyor belt.

[0034] The pressure-holding structure includes a front sealing plate 4 for sealing the portion of the material on the feeding conveyor belt in front of the cutting blade and a rear sealing plate 5 for sealing the portion of the material on the feeding conveyor belt behind the cutting blade. In use, the material to be cut is vacuumed and flattened by the hollow compression mechanism as it passes the cutting blade, resulting in a clean cut. The pressure-holding structure helps address the issue of large leakage areas after cutting, which can lead to poor vacuum compression.

[0035] The front sealing plate includes a front left connecting frame, a front right connecting frame 6, two front horizontal pressing shafts 7 distributed along the front-rear direction and connected at both ends to the front left and front right connecting frames respectively, and a front annular flexible sealing sleeve 8 simultaneously fitted on the two front horizontal pressing shafts. The front annular flexible sealing sleeve is pressed against the material on the feeding conveyor belt by the front horizontal pressing shafts to seal the material. The front left and front right connecting frames are connected to the cutting blade. The two front horizontal pressing shafts tension the front annular flexible sealing sleeve. The front annular flexible sealing sleeve is a membrane structure, specifically a plastic membrane. The front pressing shaft includes a front roller 9 and two front shaft heads 10 rotatably connected to both ends of the front roller. The two front shaft heads are fixed to the front left and front right connecting frames one-to-one, so that the two ends of the front horizontal pressing shaft are rotatably connected to the front left and front right connecting frames. The rear sealing plate includes a rear left connecting frame 11, a rear right connecting frame 12, two rear horizontal pressing shafts 13 distributed along the front-rear direction and connected at both ends to the rear left and rear right connecting frames respectively, and a rear annular flexible sealing sleeve 14 simultaneously fitted onto the two rear horizontal pressing shafts. The rear annular flexible sealing sleeve is pressed against the material on the feeding conveyor belt by the two rear horizontal pressing shafts to seal the material. The rear left and rear right connecting frames are connected together with the cutting blade. The two rear horizontal pressing shafts tension the rear annular flexible sealing sleeve. Both the rear annular flexible sealing sleeve and the front annular flexible sealing sleeve are membrane structures, specifically plastic films. The rear pressing shaft includes a rear roller 15 and two rear shaft heads 16 rotatably connected to both ends of the rear roller. The two rear shaft heads are fixed to the rear left and rear right connecting frames one-to-one, thereby realizing the rotatable connection of both ends of the rear horizontal pressing shaft to the rear left and rear right connecting frames. The rear left connecting frame and the front left connecting frame are connected to the cutting blade via the left lifting mechanism 17 (specifically a cylinder), and the rear right connecting frame and the front right connecting frame are connected to the cutting blade via the right lifting mechanism 18 (specifically a cylinder).

[0036] During use, the front and rear annular winding sealing sleeves are pressed onto the material to be cut to prevent air leakage and maintain pressure.

[0037] The adsorption system includes an exhaust fan 33, an air intake structure connected to the inlet of the exhaust fan, and an exhaust manifold 34 connected to the outlet of the exhaust fan. The exhaust fan is located below the frame. The air intake structure includes an air intake chamber 35 enclosed at the top by a conveyor belt at the feeding end, and an air intake pipe 36 connecting the air intake chamber and the inlet of the exhaust fan. The exhaust manifold includes an air intake section 37 and an air outlet section 38, with the air outlet section extending from one end of the frame's width direction to the other. The air intake section is connected to the middle of the air outlet section, connecting the outlet of the exhaust fan and the air outlet section. Both ends of the air outlet section can be detachably connected to an air outlet pipe cover or an exhaust pipe 31, with the air outlet pipe cover and exhaust pipe each connected to one end of the air outlet section, thus allowing the exhaust pipe to be selectively connected to one side of the frame's width direction. It can vacuum-adsorb and flatten materials, resulting in clean cuts during cutting. The exhaust pipe can be connected to either side of the frame depending on the installation site, avoiding interference.

[0038] The air outlet section includes an air outlet section end ring, an outer air outlet section pipe 39, and an inner air outlet section pipe 40 passing through the outer air outlet section pipe. An air outlet section filling channel 41 is formed between the outer and inner air outlet section pipes. The air outlet section filling channel is filled with air outlet section suction cotton. The inner air outlet section pipe has several air outlet section mesh holes 52. There are two air outlet section end rings, which are correspondingly sealed at both ends of the air outlet section filling channel. An air inlet hole 42 is provided in the middle of the inner air outlet section pipe, and the air inlet section passes through the outer air outlet section pipe and connects with the air inlet hole. The outer circumferential surface of the inner pipe of the exhaust section is provided with several exhaust section inner pipe reflective rings 43 distributed along the extension direction of the exhaust section inner pipe. The exhaust section inner pipe reflective rings extend circumferentially along the exhaust section inner pipe, and are provided with several exhaust section inner pipe sound transmission holes 44, which penetrate the exhaust section inner pipe reflective rings. Both end faces of the exhaust section inner pipe reflective rings are conical surfaces, with one end larger than the other facing the air inlet. Both the exhaust section inner pipe and the exhaust section outer pipe are circular pipes, and the exhaust section inner pipe sound transmission holes on adjacent exhaust section inner pipe reflective rings are staggered radially along the exhaust section inner pipe.

[0039] An isolation plate 45 is provided in the main air intake chamber, which isolates an air intake cavity 46 within the main air intake chamber. The isolation plate has filter holes 47. The inlet end of the air intake pipe is located within the air intake cavity. A filter cover 48, connected to the inlet end of the air intake pipe, is located within the air intake cavity. The filter cover has filter holes 49, the diameter of which is smaller than the diameter of the filter holes in the isolation plate. The filter cover is a tubular structure, with an end cap 50 at one end and the other end connected to the inlet end of the air intake pipe. During use, the material fed at the feeding end is vacuumed and compressed. The vacuumed airflow flows sequentially through the main air intake chamber, the air intake cavity, and the filter cover before reaching the air intake pipe. During vacuuming, the chips generated during cutting by the cutting bed are filtered and blocked sequentially by the filter holes in the isolation plate and the filter holes in the filter cover, thus preventing them from entering the exhaust fan and damaging the equipment or polluting the air.

[0040] The air inlet chamber has a filter cover removal hole on its wall, and an end cap is detachably connected to the filter cover removal hole to close it. The air inlet chamber has a tubular section 51, one end of which forms the filter cover removal hole, and the filter cover passes through the tubular section. It also includes a control console 20, with control console interfaces on both sides of the frame for connection to the control console. The control console is detachably connected to one of these interfaces. An exhaust pipe cover and an exhaust pipe are each connected to one end of the exhaust section. The motors driving the feeding conveyor belt, the discharging conveyor belt, and the exhaust fan are all located below the frame.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting table comprising a frame, characterized in that, The rack is provided with a feeding conveying belt, a discharging conveying belt butted at the discharging end of the feeding conveying belt, a film covering frame arranged at the feeding end of the feeding conveying belt, a cutting knife for cutting the material covered with film on the feeding conveying belt, a pressure maintaining structure for maintaining the pressure of the material on both sides of the cutting knife along the material conveying direction, and a suction system for vacuumizing the material on the feeding conveying belt, the suction system comprising an air extractor, an air inlet structure connected at the inlet end of the air extractor, and an air outlet main pipe connected at the outlet end of the air extractor, the air inlet structure comprising an air inlet main chamber with its upper end closed by the feeding end conveying belt and an air inlet pipe communicating with the air inlet main chamber and the inlet end of the air extractor, and the pressure maintaining structure comprising a front sealing plate for sealing the part of the material on the feeding conveying belt in front of the cutting knife and a rear sealing plate for sealing the part of the material on the feeding conveying belt behind the cutting knife.

2. A cutting bed according to claim 1, characterised in that The front sealing plate comprises a front left connecting frame, a front right connecting frame, two front horizontal pressing shafts distributed along the front-rear direction and connected at their two ends to the front left connecting frame and the front right connecting frame, and a front annular flexible sealing sleeve sleeved on the two front horizontal pressing shafts, the front annular flexible sealing sleeve being pressed by the front horizontal pressing shafts on the material on the feeding conveying belt to seal the material, the front left connecting frame and the front right connecting frame being connected together with the cutting knife; the rear sealing plate comprises a rear left connecting frame, a rear right connecting frame, two rear horizontal pressing shafts distributed along the front-rear direction and connected at their two ends to the rear left connecting frame and the rear right connecting frame, and a rear annular flexible sealing sleeve sleeved on the two rear horizontal pressing shafts, the rear annular flexible sealing sleeve being pressed by the rear horizontal pressing shafts on the material on the feeding conveying belt to seal the material, the rear left connecting frame and the rear right connecting frame being connected together with the cutting knife, the front horizontal pressing shafts tensioning the front annular flexible sealing sleeve, and the rear horizontal pressing shafts tensioning the rear annular flexible sealing sleeve.

3. A cutting bed according to claim 2, wherein, The rear left connecting frame and the front left connecting frame are connected together with the cutting knife through a left lifting mechanism, and the rear right connecting frame and the front right connecting frame are connected together with the cutting knife through a right lifting mechanism.

4. A cutting bed according to claim 1, wherein The rack is provided with a feeding conveying belt, a discharging conveying belt butted at the discharging end of the feeding conveying belt, a film covering frame arranged at the feeding end of the feeding conveying belt, a cutting knife for cutting the material covered with film on the feeding conveying belt, a pressure maintaining structure for maintaining the pressure of the material on both sides of the cutting knife along the material conveying direction, and a suction system for vacuumizing the material on the feeding conveying belt, the suction system comprising an air extractor, an air inlet structure connected at the inlet end of the air extractor, and an air outlet main pipe connected at the outlet end of the air extractor, the air inlet structure comprising an air inlet main chamber with its upper end closed by the feeding end conveying belt and an air inlet pipe communicating with the air inlet main chamber and the inlet end of the air extractor, and the pressure maintaining structure comprising a front sealing plate for sealing the part of the material on the feeding conveying belt in front of the cutting knife and a rear sealing plate for sealing the part of the material on the feeding conveying belt behind the cutting knife. The rack is provided with a feeding conveying belt, a discharging conveying belt butted at the discharging end of the feeding conveying belt, a film covering frame arranged at the feeding end of the feeding conveying belt, a cutting knife for cutting the material covered with film on the feeding conveying belt, a pressure maintaining structure for maintaining the pressure of the material on both sides of the cutting knife along the material conveying direction, and a suction system for vacuumizing the material on the feeding conveying belt, the suction system comprising an air extractor, an air inlet structure connected at the inlet end of the air extractor, and an air outlet main pipe connected at the outlet end of the air extractor, the air inlet structure comprising an air inlet main chamber with its upper end closed by the feeding end conveying belt and an air inlet pipe communicating with the air inlet main chamber and the inlet end of the air extractor, and the pressure maintaining structure comprising a front sealing plate for sealing the part of the material on the feeding conveying belt in front of the cutting knife and a rear sealing plate for sealing the part of the material on the feeding conveying belt behind the cutting knife.

5. A cutting bed according to claim 4, wherein, The air outlet section comprises air outlet section end rings, an air outlet section outer tube and an air outlet section inner tube arranged in the air outlet section outer tube, a filling channel is formed between the air outlet section outer tube and the air outlet section inner tube, the filling channel is filled with air outlet section suction cotton, the air outlet section inner tube is provided with a plurality of air outlet section inner tube mesh holes, the air outlet section end rings are two, the two air outlet section end rings are correspondingly closed at both ends of the filling channel, the middle part of the air outlet section inner tube is provided with an air inlet hole, and the air inlet section is connected with the air inlet hole after passing through the air outlet section inner tube outer tube.

6. A cutting bed according to claim 5, wherein, The outer circumferential surface of the air outlet section inner tube is provided with a plurality of air outlet section inner tube reflection rings distributed along the extension direction of the air outlet section inner tube, the air outlet section inner tube reflection rings extend along the circumference of the air outlet section inner tube, the air outlet section inner tube reflection rings are provided with a plurality of air outlet section inner tube sound transmission holes, and the air outlet section inner tube sound transmission holes penetrate the air outlet section inner tube reflection rings.

7. A cutting bed according to claim 6, wherein The two end faces of the air outlet section inner tube reflection ring are both tapered surfaces, one end of which faces the air inlet hole and the other end of which is small.

8. A cutting bed according to claim 4 or 5 or 6 or 7, characterised in that, The air inlet chamber is provided with a partition plate, the partition plate separates the air inlet chamber into an air inlet cavity, the partition plate is provided with a partition plate filter hole, the inlet end of the air inlet pipe is located in the air inlet cavity, the air inlet cavity is provided with a filter cover connected with the inlet end of the air inlet pipe, the filter cover is provided with a filter cover filter hole, the diameter of the filter cover filter hole is smaller than that of the partition plate filter hole, the filter cover is a tubular structure, one end of the filter cover is provided with an end cover, and the other end of the filter cover is connected with the inlet end of the air inlet pipe.

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